diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-23 09:02:42 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-23 09:02:42 -0700 |
| commit | 6f73b3629f774c6cba589b15fd095112b25ca923 (patch) | |
| tree | 50a60feae71cb5f40078f552b9b08468bc7b29c9 | |
| parent | 3a8580f82024e30b31c662aa49346adf7a3bcdb5 (diff) | |
| parent | 2074b1d9d53ae696dd3f49482bad43254f40f01d (diff) | |
| download | linux-6f73b3629f774c6cba589b15fd095112b25ca923.tar.gz linux-6f73b3629f774c6cba589b15fd095112b25ca923.tar.xz linux-6f73b3629f774c6cba589b15fd095112b25ca923.zip | |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Benjamin Herrenschmidt:
"Here are the powerpc goodies for 3.5. Main highlights are:
- Support for the NX crypto engine in Power7+
- A bunch of Anton goodness, including some micro optimization of our
syscall entry on Power7
- I converted a pile of our thermal control drivers to the new i2c
APIs (essentially turning the old therm_pm72 into a proper set of
windfarm drivers). That's one more step toward removing the
deprecated i2c APIs, there's still a few drivers to fix, but we are
getting close
- kexec/kdump support for 47x embedded cores
The big missing thing here is no updates from Freescale. Not sure
what's up here, but with Kumar not working for them anymore things are
a bit in a state of flux in that area."
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (71 commits)
powerpc: Fix irq distribution
Revert "powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags"
powerpc: Fixing a cputhread code documentation
powerpc/crypto: Enable the PFO-based encryption device
powerpc/crypto: Build files for the nx device driver
powerpc/crypto: debugfs routines and docs for the nx device driver
powerpc/crypto: SHA512 hash routines for nx encryption
powerpc/crypto: SHA256 hash routines for nx encryption
powerpc/crypto: AES-XCBC mode routines for nx encryption
powerpc/crypto: AES-GCM mode routines for nx encryption
powerpc/crypto: AES-ECB mode routines for nx encryption
powerpc/crypto: AES-CTR mode routines for nx encryption
powerpc/crypto: AES-CCM mode routines for nx encryption
powerpc/crypto: AES-CBC mode routines for nx encryption
powerpc/crypto: nx driver code supporting nx encryption
powerpc/pseries: Enable the PFO-based RNG accelerator
powerpc/pseries/hwrng: PFO-based hwrng driver
powerpc/pseries: Add PFO support to the VIO bus
powerpc/pseries: Add pseries update notifier for OFDT prop changes
powerpc/pseries: Add new hvcall constants to support PFO
...
85 files changed, 7827 insertions, 1080 deletions
diff --git a/Documentation/ABI/testing/debugfs-pfo-nx-crypto b/Documentation/ABI/testing/debugfs-pfo-nx-crypto new file mode 100644 index 000000000000..685d5a448423 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-pfo-nx-crypto @@ -0,0 +1,45 @@ +What: /sys/kernel/debug/nx-crypto/* +Date: March 2012 +KernelVersion: 3.4 +Contact: Kent Yoder <key@linux.vnet.ibm.com> +Description: + + These debugfs interfaces are built by the nx-crypto driver, built in +arch/powerpc/crypto/nx. + +Error Detection +=============== + +errors: +- A u32 providing a total count of errors since the driver was loaded. The +only errors counted here are those returned from the hcall, H_COP_OP. + +last_error: +- The most recent non-zero return code from the H_COP_OP hcall. -EBUSY is not +recorded here (the hcall will retry until -EBUSY goes away). + +last_error_pid: +- The process ID of the process who received the most recent error from the +hcall. + +Device Use +========== + +aes_bytes: +- The total number of bytes encrypted using AES in any of the driver's +supported modes. + +aes_ops: +- The total number of AES operations submitted to the hardware. + +sha256_bytes: +- The total number of bytes hashed by the hardware using SHA-256. + +sha256_ops: +- The total number of SHA-256 operations submitted to the hardware. + +sha512_bytes: +- The total number of bytes hashed by the hardware using SHA-512. + +sha512_ops: +- The total number of SHA-512 operations submitted to the hardware. diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 8a01098eaaca..0a947bd9c076 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -350,7 +350,7 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE config KEXEC bool "kexec system call (EXPERIMENTAL)" - depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL + depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot @@ -367,7 +367,7 @@ config KEXEC config CRASH_DUMP bool "Build a kdump crash kernel" - depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP && !PPC_47x) + depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) select RELOCATABLE if PPC64 || 44x select DYNAMIC_MEMSTART if FSL_BOOKE help diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 6524c6e21896..950d1f7a5a39 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -69,6 +69,16 @@ LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=no -mcall-aixdesc CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple + +CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) +CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) +CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) +CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) +CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) +CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) + +CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell) + KBUILD_CPPFLAGS += -Iarch/$(ARCH) KBUILD_AFLAGS += -Iarch/$(ARCH) KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) @@ -76,32 +86,11 @@ CPP = $(CC) -E $(KBUILD_CFLAGS) CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ -ifeq ($(CONFIG_PPC64),y) -GCC_BROKEN_VEC := $(call cc-ifversion, -lt, 0400, y) - -ifeq ($(CONFIG_POWER4_ONLY),y) -ifeq ($(CONFIG_ALTIVEC),y) -ifeq ($(GCC_BROKEN_VEC),y) - KBUILD_CFLAGS += $(call cc-option,-mcpu=970) -else - KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) -endif -else - KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) -endif -else - KBUILD_CFLAGS += $(call cc-option,-mtune=power4) -endif -endif - KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o -ifeq ($(CONFIG_TUNE_CELL),y) - KBUILD_CFLAGS += $(call cc-option,-mtune=cell) -endif - -# No AltiVec instruction when building kernel +# No AltiVec or VSX instructions when building kernel KBUILD_CFLAGS += $(call cc-option,-mno-altivec) +KBUILD_CFLAGS += $(call cc-option,-mno-vsx) # No SPE instruction when building kernel # (We use all available options to help semi-broken compilers) @@ -160,6 +149,7 @@ core-$(CONFIG_KVM) += arch/powerpc/kvm/ core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ +drivers-$(CONFIG_CRYPTO_DEV_NX) += drivers/crypto/nx/ # Default to zImage, override when needed all: zImage @@ -234,10 +224,11 @@ archprepare: checkbin # Use the file '.tmp_gas_check' for binutils tests, as gas won't output # to stdout and these checks are run even on install targets. TOUT := .tmp_gas_check -# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec -# instructions. -# gcc-3.4 and binutils-2.14 are a fatal combination. +# Check gcc and binutils versions: +# - gcc-3.4 and binutils-2.14 are a fatal combination +# - Require gcc 4.0 or above on 64-bit +# - gcc-4.2.0 has issues compiling modules on 64-bit checkbin: @if test "$(call cc-version)" = "0304" ; then \ if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ @@ -247,6 +238,12 @@ checkbin: false; \ fi ; \ fi + @if test "$(call cc-version)" -lt "0400" \ + && test "x${CONFIG_PPC64}" = "xy" ; then \ + echo -n "Sorry, GCC v4.0 or above is required to build " ; \ + echo "the 64-bit powerpc kernel." ; \ + false ; \ + fi @if test "$(call cc-fullversion)" = "040200" \ && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ diff --git a/arch/powerpc/boot/dts/bluestone.dts b/arch/powerpc/boot/dts/bluestone.dts index 7bda373f10ef..9d4917aebe6b 100644 --- a/arch/powerpc/boot/dts/bluestone.dts +++ b/arch/powerpc/boot/dts/bluestone.dts @@ -373,5 +373,30 @@ 0x0 0x0 0x0 0x3 &UIC3 0xe 0x4 /* swizzled int C */ 0x0 0x0 0x0 0x4 &UIC3 0xf 0x4 /* swizzled int D */>; }; + + MSI: ppc4xx-msi@C10000000 { + compatible = "amcc,ppc4xx-msi", "ppc4xx-msi"; + reg = < 0xC 0x10000000 0x100 + 0xC 0x10000000 0x100>; + sdr-base = <0x36C>; + msi-data = <0x00004440>; + msi-mask = <0x0000ffe0>; + interrupts =<0 1 2 3 4 5 6 7>; + interrupt-parent = <&MSI>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + msi-available-ranges = <0x0 0x100>; + interrupt-map = < + 0 &UIC3 0x18 1 + 1 &UIC3 0x19 1 + 2 &UIC3 0x1A 1 + 3 &UIC3 0x1B 1 + 4 &UIC3 0x1C 1 + 5 &UIC3 0x1D 1 + 6 &UIC3 0x1E 1 + 7 &UIC3 0x1F 1 + >; + }; }; }; diff --git a/arch/powerpc/configs/g5_defconfig b/arch/powerpc/configs/g5_defconfig index 1196c34163b7..07b7f2af2dca 100644 --- a/arch/powerpc/configs/g5_defconfig +++ b/arch/powerpc/configs/g5_defconfig @@ -1,5 +1,4 @@ CONFIG_PPC64=y -CONFIG_POWER4_ONLY=y CONFIG_ALTIVEC=y CONFIG_SMP=y CONFIG_NR_CPUS=4 diff --git a/arch/powerpc/configs/maple_defconfig b/arch/powerpc/configs/maple_defconfig index 2244d370f24d..02ac96b679b8 100644 --- a/arch/powerpc/configs/maple_defconfig +++ b/arch/powerpc/configs/maple_defconfig @@ -1,5 +1,4 @@ CONFIG_PPC64=y -CONFIG_POWER4_ONLY=y CONFIG_SMP=y CONFIG_NR_CPUS=4 CONFIG_EXPERIMENTAL=y diff --git a/arch/powerpc/configs/pasemi_defconfig b/arch/powerpc/configs/pasemi_defconfig index f4deb0b78cf0..840a2c2d0430 100644 --- a/arch/powerpc/configs/pasemi_defconfig +++ b/arch/powerpc/configs/pasemi_defconfig @@ -1,5 +1,4 @@ CONFIG_PPC64=y -CONFIG_POWER4_ONLY=y CONFIG_ALTIVEC=y # CONFIG_VIRT_CPU_ACCOUNTING is not set CONFIG_SMP=y diff --git a/arch/powerpc/configs/ps3_defconfig b/arch/powerpc/configs/ps3_defconfig index ded867871e97..c2f4b4a86ece 100644 --- a/arch/powerpc/configs/ps3_defconfig +++ b/arch/powerpc/configs/ps3_defconfig @@ -6,7 +6,6 @@ CONFIG_NR_CPUS=2 CONFIG_EXPERIMENTAL=y CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y -CONFIG_SPARSE_IRQ=y CONFIG_BLK_DEV_INITRD=y CONFIG_CC_OPTIMIZE_FOR_SIZE=y CONFIG_EMBEDDED=y @@ -25,7 +24,6 @@ CONFIG_PS3_DISK=y CONFIG_PS3_ROM=y CONFIG_PS3_FLASH=y CONFIG_PS3_VRAM=m -CONFIG_PS3_LPM=m # CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set CONFIG_HIGH_RES_TIMERS=y # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set @@ -53,8 +51,6 @@ CONFIG_IP_PNP_DHCP=y # CONFIG_INET_DIAG is not set CONFIG_IPV6=y CONFIG_BT=m -CONFIG_BT_L2CAP=y -CONFIG_BT_SCO=y CONFIG_BT_RFCOMM=m CONFIG_BT_RFCOMM_TTY=y CONFIG_BT_BNEP=m @@ -63,7 +59,6 @@ CONFIG_BT_BNEP_PROTO_FILTER=y CONFIG_BT_HIDP=m CONFIG_BT_HCIBTUSB=m CONFIG_CFG80211=m -# CONFIG_WIRELESS_EXT_SYSFS is not set CONFIG_MAC80211=m CONFIG_MAC80211_RC_PID=y # CONFIG_MAC80211_RC_MINSTREL is not set @@ -181,7 +176,6 @@ CONFIG_DEBUG_INFO=y CONFIG_DEBUG_WRITECOUNT=y CONFIG_DEBUG_MEMORY_INIT=y CONFIG_DEBUG_LIST=y -CONFIG_SYSCTL_SYSCALL_CHECK=y # CONFIG_FTRACE is not set CONFIG_DEBUG_STACKOVERFLOW=y CONFIG_CRYPTO_CCM=m diff --git a/arch/powerpc/include/asm/asm-compat.h b/arch/powerpc/include/asm/asm-compat.h index decad950f11a..5d7fbe1950f9 100644 --- a/arch/powerpc/include/asm/asm-compat.h +++ b/arch/powerpc/include/asm/asm-compat.h @@ -29,18 +29,9 @@ #define PPC_LLARX(t, a, b, eh) PPC_LDARX(t, a, b, eh) #define PPC_STLCX stringify_in_c(stdcx.) #define PPC_CNTLZL stringify_in_c(cntlzd) +#define PPC_MTOCRF(FXM, RS) MTOCRF((FXM), (RS)) #define PPC_LR_STKOFF 16 #define PPC_MIN_STKFRM 112 - -/* Move to CR, single-entry optimized version. Only available - * on POWER4 and later. - */ -#ifdef CONFIG_POWER4_ONLY -#define PPC_MTOCRF stringify_in_c(mtocrf) -#else -#define PPC_MTOCRF stringify_in_c(mtcrf) -#endif - #else /* 32-bit */ /* operations for longs and pointers */ diff --git a/arch/powerpc/include/asm/cputhreads.h b/arch/powerpc/include/asm/cputhreads.h index ce516e5eb0d3..ac3eedb9b74a 100644 --- a/arch/powerpc/include/asm/cputhreads.h +++ b/arch/powerpc/include/asm/cputhreads.h @@ -9,7 +9,7 @@ * Note: This implementation is limited to a power of 2 number of * threads per core and the same number for each core in the system * (though it would work if some processors had less threads as long - * as the CPU numbers are still allocated, just not brought offline). + * as the CPU numbers are still allocated, just not brought online). * * However, the API allows for a different implementation in the future * if needed, as long as you only use the functions and not the variables diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index 1c324ff55ea8..612252388190 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -77,8 +77,27 @@ #define H_MR_CONDITION -43 #define H_NOT_ENOUGH_RESOURCES -44 #define H_R_STATE -45 -#define H_RESCINDEND -46 -#define H_MULTI_THREADS_ACTIVE -9005 +#define H_RESCINDED -46 +#define H_P2 -55 +#define H_P3 -56 +#define H_P4 -57 +#define H_P5 -58 +#define H_P6 -59 +#define H_P7 -60 +#define H_P8 -61 +#define H_P9 -62 +#define H_TOO_BIG -64 +#define H_OVERLAP -68 +#define H_INTERRUPT -69 +#define H_BAD_DATA -70 +#define H_NOT_ACTIVE -71 +#define H_SG_LIST -72 +#define H_OP_MODE -73 +#define H_COP_HW -74 +#define H_UNSUPPORTED_FLAG_START -256 +#define H_UNSUPPORTED_FLAG_END -511 +#define H_MULTI_THREADS_ACTIVE -9005 +#define H_OUTSTANDING_COP_OPS -9006 /* Long Busy is a condition that can be returned by the firmware @@ -240,6 +259,8 @@ #define H_GET_MPP 0x2D4 #define H_HOME_NODE_ASSOCIATIVITY 0x2EC #define H_BEST_ENERGY 0x2F4 +#define H_RANDOM 0x300 +#define H_COP 0x304 #define H_GET_MPP_X 0x314 #define MAX_HCALL_OPCODE H_GET_MPP_X diff --git a/arch/powerpc/include/asm/lppaca.h b/arch/powerpc/include/asm/lppaca.h index a76254af0aaa..531fe0c3108f 100644 --- a/arch/powerpc/include/asm/lppaca.h +++ b/arch/powerpc/include/asm/lppaca.h @@ -20,18 +20,16 @@ #define _ASM_POWERPC_LPPACA_H #ifdef __KERNEL__ -/* These definitions relate to hypervisors that only exist when using +/* + * These definitions relate to hypervisors that only exist when using * a server type processor */ #ifdef CONFIG_PPC_BOOK3S -//============================================================================= -// -// This control block contains the data that is shared between the -// hypervisor (PLIC) and the OS. -// -// -//---------------------------------------------------------------------------- +/* + * This control block contains the data that is shared between the + * hypervisor and the OS. + */ #include <linux/cache.h> #include <linux/threads.h> #include <asm/types.h> @@ -43,123 +41,65 @@ */ #define NR_LPPACAS 1 - -/* The Hypervisor barfs if the lppaca crosses a page boundary. A 1k - * alignment is sufficient to prevent this */ +/* + * The Hypervisor barfs if the lppaca crosses a page boundary. A 1k + * alignment is sufficient to prevent this + */ struct lppaca { -//============================================================================= -// CACHE_LINE_1 0x0000 - 0x007F Contains read-only data -// NOTE: The xDynXyz fields are fields that will be dynamically changed by -// PLIC when preparing to bring a processor online or when dispatching a -// virtual processor! -//============================================================================= - u32 desc; // Eye catcher 0xD397D781 x00-x03 - u16 size; // Size of this struct x04-x05 - u16 reserved1; // Reserved x06-x07 - u16 reserved2:14; // Reserved x08-x09 - u8 shared_proc:1; // Shared processor indicator ... - u8 secondary_thread:1; // Secondary thread indicator ... - volatile u8 dyn_proc_status:8; // Dynamic Status of this proc x0A-x0A - u8 secondary_thread_count; // Secondary thread count x0B-x0B - volatile u16 dyn_hv_phys_proc_index;// Dynamic HV Physical Proc Index0C-x0D - volatile u16 dyn_hv_log_proc_index;// Dynamic HV Logical Proc Indexx0E-x0F - u32 decr_val; // Value for Decr programming x10-x13 - u32 pmc_val; // Value for PMC regs x14-x17 - volatile u32 dyn_hw_node_id; // Dynamic Hardware Node id x18-x1B - volatile u32 dyn_hw_proc_id; // Dynamic Hardware Proc Id x1C-x1F - volatile u32 dyn_pir; // Dynamic ProcIdReg value x20-x23 - u32 dsei_data; // DSEI data x24-x27 - u64 sprg3; // SPRG3 value x28-x2F - u8 reserved3[40]; // Reserved x30-x57 - volatile u8 vphn_assoc_counts[8]; // Virtual processor home node - // associativity change counters x58-x5F - u8 reserved4[32]; // Reserved x60-x7F - -//============================================================================= -// CACHE_LINE_2 0x0080 - 0x00FF Contains local read-write data -//============================================================================= - // This Dword contains a byte for each type of interrupt that can occur. - // The IPI is a count while the others are just a binary 1 or 0. - union { - u64 any_int; - struct { - u16 reserved; // Reserved - cleared by #mpasmbl - u8 xirr_int; // Indicates xXirrValue is valid or Immed IO - u8 ipi_cnt; // IPI Count - u8 decr_int; // DECR interrupt occurred - u8 pdc_int; // PDC interrupt occurred - u8 quantum_int; // Interrupt quantum reached - u8 old_plic_deferred_ext_int; // Old PLIC has a deferred XIRR pending - } fields; - } int_dword; - - // Whenever any fields in this Dword are set then PLIC will defer the - // processing of external interrupts. Note that PLIC will store the - // XIRR directly into the xXirrValue field so that another XIRR will - // not be presented until this one clears. The layout of the low - // 4-bytes of this Dword is up to SLIC - PLIC just checks whether the - // entire Dword is zero or not. A non-zero value in the low order - // 2-bytes will result in SLIC being granted the highest thread - // priority upon return. A 0 will return to SLIC as medium priority. - u64 plic_defer_ints_area; // Entire Dword - - // Used to pass the real SRR0/1 from PLIC to SLIC as well as to - // pass the target SRR0/1 from SLIC to PLIC on a SetAsrAndRfid. - u64 saved_srr0; // Saved SRR0 x10-x17 - u64 saved_srr1; // Saved SRR1 x18-x1F - - // Used to pass parms from the OS to PLIC for SetAsrAndRfid - u64 saved_gpr3; // Saved GPR3 x20-x27 - u64 saved_gpr4; // Saved GPR4 x28-x2F - union { - u64 saved_gpr5; /* Saved GPR5 x30-x37 */ - struct { - u8 cede_latency_hint; /* x30 */ - u8 reserved[7]; /* x31-x36 */ - } fields; - } gpr5_dword; - - - u8 dtl_enable_mask; // Dispatch Trace Log mask x38-x38 - u8 donate_dedicated_cpu; // Donate dedicated CPU cycles x39-x39 - u8 fpregs_in_use; // FP regs in use x3A-x3A - u8 pmcregs_in_use; // PMC regs in use x3B-x3B - volatile u32 saved_decr; // Saved Decr Value x3C-x3F - volatile u64 emulated_time_base;// Emulated TB for this thread x40-x47 - volatile u64 cur_plic_latency; // Unaccounted PLIC latency x48-x4F - u64 tot_plic_latency; // Accumulated PLIC latency x50-x57 - u64 wait_state_cycles; // Wait cycles for this proc x58-x5F - u64 end_of_quantum; // TB at end of quantum x60-x67 - u64 pdc_saved_sprg1; // Saved SPRG1 for PMC int x68-x6F - u64 pdc_saved_srr0; // Saved SRR0 for PMC int x70-x77 - volatile u32 virtual_decr; // Virtual DECR for shared procsx78-x7B - u16 slb_count; // # of SLBs to maintain x7C-x7D - u8 idle; // Indicate OS is idle x7E - u8 vmxregs_in_use; // VMX registers in use x7F - - -//============================================================================= -// CACHE_LINE_3 0x0100 - 0x017F: This line is shared with other processors -//============================================================================= - // This is the yield_count. An "odd" value (low bit on) means that - // the processor is yielded (either because of an OS yield or a PLIC - // preempt). An even value implies that the processor is currently - // executing. - // NOTE: This value will ALWAYS be zero for dedicated processors and - // will NEVER be zero for shared processors (ie, initialized to a 1). - volatile u32 yield_count; // PLIC increments each dispatchx00-x03 - volatile u32 dispersion_count; // dispatch changed phys cpu x04-x07 - volatile u64 cmo_faults; // CMO page fault count x08-x0F - volatile u64 cmo_fault_time; // CMO page fault time x10-x17 - u8 reserved7[104]; // Reserved x18-x7F - -//============================================================================= -// CACHE_LINE_4-5 0x0180 - 0x027F Contains PMC interrupt data -//============================================================================= - u32 page_ins; // CMO Hint - # page ins by OS x00-x03 - u8 reserved8[148]; // Reserved x04-x97 - volatile u64 dtl_idx; // Dispatch Trace Log head idx x98-x9F - u8 reserved9[96]; // Reserved xA0-xFF + /* cacheline 1 contains read-only data */ + + u32 desc; /* Eye catcher 0xD397D781 */ + u16 size; /* Size of this struct */ + u16 reserved1; + u16 reserved2:14; + u8 shared_proc:1; /* Shared processor indicator */ + u8 secondary_thread:1; /* Secondary thread indicator */ + u8 reserved3[14]; + volatile u32 dyn_hw_node_id; /* Dynamic hardware node id */ + volatile u32 dyn_hw_proc_id; /* Dynamic hardware proc id */ + u8 reserved4[56]; + volatile u8 vphn_assoc_counts[8]; /* Virtual processor home node */ + /* associativity change counters */ + u8 reserved5[32]; + + /* cacheline 2 contains local read-write data */ + + u8 reserved6[48]; + u8 cede_latency_hint; + u8 reserved7[7]; + u8 dtl_enable_mask; /* Dispatch Trace Log mask */ + u8 donate_dedicated_cpu; /* Donate dedicated CPU cycles */ + u8 fpregs_in_use; + u8 pmcregs_in_use; + u8 reserved8[28]; + u64 wait_state_cycles; /* Wait cycles for this proc */ + u8 reserved9[28]; + u16 slb_count; /* # of SLBs to maintain */ + u8 idle; /* Indicate OS is idle */ + u8 vmxregs_in_use; + + /* cacheline 3 is shared with other processors */ + + /* + * This is the yield_count. An "odd" value (low bit on) means that + * the processor is yielded (either because of an OS yield or a + * hypervisor preempt). An even value implies that the processor is + * currently executing. + * NOTE: This value will ALWAYS be zero for dedicated processors and + * will NEVER be zero for shared processors (ie, initialized to a 1). + */ + volatile u32 yield_count; + volatile u32 dispersion_count; /* dispatch changed physical cpu */ + volatile u64 cmo_faults; /* CMO page fault count */ + volatile u64 cmo_fault_time; /* CMO page fault time */ + u8 reserved10[104]; + + /* cacheline 4-5 */ + + u32 page_ins; /* CMO Hint - # page ins by OS */ + u8 reserved11[148]; + volatile u64 dtl_idx; /* Dispatch Trace Log head index */ + u8 reserved12[96]; } __attribute__((__aligned__(0x400))); extern struct lppaca lppaca[]; @@ -172,13 +112,13 @@ extern struct lppaca lppaca[]; * ESID is stored in the lower 64bits, then the VSID. */ struct slb_shadow { - u32 persistent; // Number of persistent SLBs x00-x03 - u32 buffer_length; // Total shadow buffer length x04-x07 - u64 reserved; // Alignment x08-x0f + u32 persistent; /* Number of persistent SLBs */ + u32 buffer_length; /* Total shadow buffer length */ + u64 reserved; struct { u64 esid; u64 vsid; - } save_area[SLB_NUM_BOLTED]; // x10-x40 + } save_area[SLB_NUM_BOLTED]; } ____cacheline_aligned; extern struct slb_shadow slb_shadow[]; diff --git a/arch/powerpc/include/asm/lv1call.h b/arch/powerpc/include/asm/lv1call.h index 233f9ecae761..f5117674bf92 100644 --- a/arch/powerpc/include/asm/lv1call.h +++ b/arch/powerpc/include/asm/lv1call.h @@ -265,8 +265,8 @@ LV1_CALL(get_spe_irq_outlet, 2, 1, 78 ) LV1_CALL(set_spe_privilege_state_area_1_register, 3, 0, 79 ) LV1_CALL(create_repository_node, 6, 0, 90 ) LV1_CALL(read_repository_node, 5, 2, 91 ) -LV1_CALL(modify_repository_node_value, 6, 0, 92 ) -LV1_CALL(remove_repository_node, 4, 0, 93 ) +LV1_CALL(write_repository_node, 6, 0, 92 ) +LV1_CALL(delete_repository_node, 4, 0, 93 ) LV1_CALL(read_htab_entries, 2, 5, 95 ) LV1_CALL(set_dabr, 2, 0, 96 ) LV1_CALL(get_total_execution_time, 2, 1, 103 ) diff --git a/arch/powerpc/include/asm/pSeries_reconfig.h b/arch/powerpc/include/asm/pSeries_reconfig.h index 23cd6cc30bcf..c07edfe98b98 100644 --- a/arch/powerpc/include/asm/pSeries_reconfig.h +++ b/arch/powerpc/include/asm/pSeries_reconfig.h @@ -13,6 +13,18 @@ #define PSERIES_RECONFIG_REMOVE 0x0002 #define PSERIES_DRCONF_MEM_ADD 0x0003 #define PSERIES_DRCONF_MEM_REMOVE 0x0004 +#define PSERIES_UPDATE_PROPERTY 0x0005 + +/** + * pSeries_reconfig_notify - Notifier value structure for OFDT property updates + * + * @node: Device tree node which owns the property being updated + * @property: Updated property + */ +struct pSeries_reconfig_prop_update { + struct device_node *node; + struct property *property; +}; #ifdef CONFIG_PPC_PSERIES extern int pSeries_reconfig_notifier_register(struct notifier_block *); diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index 50f73aa2ba21..15444204a3a1 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -369,7 +369,15 @@ BEGIN_FTR_SECTION \ END_FTR_SECTION_IFCLR(CPU_FTR_601) #endif - +#ifdef CONFIG_PPC64 +#define MTOCRF(FXM, RS) \ + BEGIN_FTR_SECTION_NESTED(848); \ + mtcrf (FXM), (RS); \ + FTR_SECTION_ELSE_NESTED(848); \ + mtocrf (FXM), (RS); \ + ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_NOEXECUTE, 848) +#endif + /* * This instruction is not implemented on the PPC 603 or 601; however, on * the 403GCX and 405GP tlbia IS defined and tlbie is not. diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h index 84cc7840cd18..9c21ed42aba6 100644 --- a/arch/powerpc/include/asm/ptrace.h +++ b/arch/powerpc/include/asm/ptrace.h @@ -354,12 +354,6 @@ static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, #define PTRACE_GETREGS64 22 #define PTRACE_SETREGS64 23 -/* (old) PTRACE requests with inverted arguments */ -#define PPC_PTRACE_GETREGS 0x99 /* Get GPRs 0 - 31 */ -#define PPC_PTRACE_SETREGS 0x98 /* Set GPRs 0 - 31 */ -#define PPC_PTRACE_GETFPREGS 0x97 /* Get FPRs 0 - 31 */ -#define PPC_PTRACE_SETFPREGS 0x96 /* Set FPRs 0 - 31 */ - /* Calls to trace a 64bit program from a 32bit program */ #define PPC_PTRACE_PEEKTEXT_3264 0x95 #define PPC_PTRACE_PEEKDATA_3264 0x94 diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h index caf82d0a00de..1a6320290d26 100644 --- a/arch/powerpc/include/asm/switch_to.h +++ b/arch/powerpc/include/asm/switch_to.h @@ -21,7 +21,6 @@ extern void disable_kernel_fp(void); extern void enable_kernel_fp(void); extern void flush_fp_to_thread(struct task_struct *); extern void enable_kernel_altivec(void); -extern void giveup_altivec(struct task_struct *); extern void load_up_altivec(struct task_struct *); extern int emulate_altivec(struct pt_regs *); extern void __giveup_vsx(struct task_struct *); @@ -40,10 +39,15 @@ static inline void discard_lazy_cpu_state(void) #ifdef CONFIG_ALTIVEC extern void flush_altivec_to_thread(struct task_struct *); +extern void giveup_altivec(struct task_struct *); +extern void giveup_altivec_notask(void); #else static inline void flush_altivec_to_thread(struct task_struct *t) { } +static inline void giveup_altivec(struct task_struct *t) +{ +} #endif #ifdef CONFIG_VSX diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index 1a1bb00f061a..a556ccc16b58 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -113,7 +113,6 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_NOERROR (1<<TIF_NOERROR) #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) -#define _TIF_RUNLATCH (1<<TIF_RUNLATCH) #define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT) diff --git a/arch/powerpc/include/asm/vio.h b/arch/powerpc/include/asm/vio.h index 6bfd5ffe1d4f..b19adf751dd9 100644 --- a/arch/powerpc/include/asm/vio.h +++ b/arch/powerpc/include/asm/vio.h @@ -46,6 +46,48 @@ struct iommu_table; +/* + * Platform Facilities Option (PFO)-specific data + */ + +/* Starting unit address for PFO devices on the VIO BUS */ +#define VIO_BASE_PFO_UA 0x50000000 + +/** + * vio_pfo_op - PFO operation parameters + * + * @flags: h_call subfunctions and modifiers + * @in: Input data block logical real address + * @inlen: If non-negative, the length of the input data block. If negative, + * the length of the input data descriptor list in bytes. + * @out: Output data block logical real address + * @outlen: If non-negative, the length of the input data block. If negative, + * the length of the input data descriptor list in bytes. + * @csbcpb: Logical real address of the 4k naturally-aligned storage block + * containing the CSB & optional FC field specific CPB + * @timeout: # of milliseconds to retry h_call, 0 for no timeout. + * @hcall_err: pointer to return the h_call return value, else NULL + */ +struct vio_pfo_op { + u64 flags; + s64 in; + s64 inlen; + s64 out; + s64 outlen; + u64 csbcpb; + void *done; + unsigned long handle; + unsigned int timeout; + long hcall_err; +}; + +/* End PFO specific data */ + +enum vio_dev_family { + VDEVICE, /* The OF node is a child of /vdevice */ + PFO, /* The OF node is a child of /ibm,platform-facilities */ +}; + /** * vio_dev - This structure is used to describe virtual I/O devices. * @@ -58,6 +100,7 @@ struct vio_dev { const char *name; const char *type; uint32_t unit_address; + uint32_t resource_id; unsigned int irq; struct { size_t desired; @@ -65,6 +108,7 @@ struct vio_dev { size_t allocated; atomic_t allocs_failed; } cmo; + enum vio_dev_family family; struct device dev; }; @@ -95,6 +139,8 @@ extern void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired); extern void __devinit vio_unregister_device(struct vio_dev *dev); +extern int vio_h_cop_sync(struct vio_dev *vdev, struct vio_pfo_op *op); + struct device_node; extern struct vio_dev *vio_register_device_node( diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 34b8afe94a50..4554dc2fe857 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -188,10 +188,6 @@ int main(void) DEFINE(SLBSHADOW_STACKESID, offsetof(struct slb_shadow, save_area[SLB_NUM_BOLTED - 1].esid)); DEFINE(SLBSHADOW_SAVEAREA, offsetof(struct slb_shadow, save_area)); - DEFINE(LPPACASRR0, offsetof(struct lppaca, saved_srr0)); - DEFINE(LPPACASRR1, offsetof(struct lppaca, saved_srr1)); - DEFINE(LPPACAANYINT, offsetof(struct lppaca, int_dword.any_int)); - DEFINE(LPPACADECRINT, offsetof(struct lppaca, int_dword.fields.decr_int)); DEFINE(LPPACA_PMCINUSE, offsetof(struct lppaca, pmcregs_in_use)); DEFINE(LPPACA_DTLIDX, offsetof(struct lppaca, dtl_idx)); DEFINE(LPPACA_YIELDCOUNT, offsetof(struct lppaca, yield_count)); diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index ef2074c3e906..ed1718feb9d9 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -63,15 +63,9 @@ system_call_common: std r0,GPR0(r1) std r10,GPR1(r1) ACCOUNT_CPU_USER_ENTRY(r10, r11) - /* - * This "crclr so" clears CR0.SO, which is the error indication on - * return from this system call. There must be no cmp instruction - * between it and the "mfcr r9" below, otherwise if XER.SO is set, - * CR0.SO will get set, causing all system calls to appear to fail. - */ - crclr so std r2,GPR2(r1) std r3,GPR3(r1) + mfcr r2 std r4,GPR4(r1) std r5,GPR5(r1) std r6,GPR6(r1) @@ -82,18 +76,20 @@ system_call_common: std r11,GPR10(r1) std r11,GPR11(r1) std r11,GPR12(r1) + std r11,_XER(r1) + std r11,_CTR(r1) std r9,GPR13(r1) - mfcr r9 mflr r10 + /* + * This clears CR0.SO (bit 28), which is the error indication on + * return from this system call. + */ + rldimi r2,r11,28,(63-28) li r11,0xc01 - std r9,_CCR(r1) std r10,_LINK(r1) std r11,_TRAP(r1) - mfxer r9 - mfctr r10 - std r9,_XER(r1) - std r10,_CTR(r1) std r3,ORIG_GPR3(r1) + std r2,_CCR(r1) ld r2,PACATOC(r13) addi r9,r1,STACK_FRAME_OVERHEAD ld r11,exception_marker@toc(r2) @@ -154,7 +150,7 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR) ld r10,TI_FLAGS(r11) andi. r11,r10,_TIF_SYSCALL_T_OR_A bne- syscall_dotrace -syscall_dotrace_cont: +.Lsyscall_dotrace_cont: cmpldi 0,r0,NR_syscalls bge- syscall_enosys @@ -211,7 +207,7 @@ syscall_exit: cmpld r3,r11 ld r5,_CCR(r1) bge- syscall_error -syscall_error_cont: +.Lsyscall_error_cont: ld r7,_NIP(r1) BEGIN_FTR_SECTION stdcx. r0,0,r1 /* to clear the reservation */ @@ -246,7 +242,7 @@ syscall_error: oris r5,r5,0x1000 /* Set SO bit in CR */ neg r3,r3 std r5,_CCR(r1) - b syscall_error_cont + b .Lsyscall_error_cont /* Traced system call support */ syscall_dotrace: @@ -268,7 +264,7 @@ syscall_dotrace: addi r9,r1,STACK_FRAME_OVERHEAD clrrdi r10,r1,THREAD_SHIFT ld r10,TI_FLAGS(r10) - b syscall_dotrace_cont + b .Lsyscall_dotrace_cont syscall_enosys: li r3,-ENOSYS diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 8f880bc77c56..f7bed44ee165 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -94,12 +94,10 @@ machine_check_pSeries_1: data_access_pSeries: HMT_MEDIUM SET_SCRATCH0(r13) -#ifndef CONFIG_POWER4_ONLY BEGIN_FTR_SECTION b data_access_check_stab data_access_not_stab: END_MMU_FTR_SECTION_IFCLR(MMU_FTR_SLB) -#endif EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, data_access_common, EXC_STD, KVMTEST, 0x300) @@ -301,7 +299,6 @@ machine_check_fwnmi: EXC_STD, KVMTEST, 0x200) KVM_HANDLER_SKIP(PACA_EXMC, EXC_STD, 0x200) -#ifndef CONFIG_POWER4_ONLY /* moved from 0x300 */ data_access_check_stab: GET_PACA(r13) @@ -328,7 +325,6 @@ do_stab_bolted_pSeries: GET_SCRATCH0(r10) std r10,PACA_EXSLB+EX_R13(r13) EXCEPTION_PROLOG_PSERIES_1(.do_stab_bolted, EXC_STD) -#endif /* CONFIG_POWER4_ONLY */ KVM_HANDLER_SKIP(PACA_EXGEN, EXC_STD, 0x300) KVM_HANDLER_SKIP(PACA_EXSLB, EXC_STD, 0x380) diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S index 7dd2981bcc50..22d608e8bb7d 100644 --- a/arch/powerpc/kernel/head_44x.S +++ b/arch/powerpc/kernel/head_44x.S @@ -778,14 +778,6 @@ _GLOBAL(__fixup_440A_mcheck) blr /* - * extern void giveup_altivec(struct task_struct *prev) - * - * The 44x core does not have an AltiVec unit. - */ -_GLOBAL(giveup_altivec) - blr - -/* * extern void giveup_fpu(struct task_struct *prev) * * The 44x core does not have an FPU. diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 28e62598d0e8..de80e0f9a2bd 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -874,14 +874,6 @@ _GLOBAL(__setup_e500mc_ivors) sync blr -/* - * extern void giveup_altivec(struct task_struct *prev) - * - * The e500 core does not have an AltiVec unit. - */ -_GLOBAL(giveup_altivec) - blr - #ifdef CONFIG_SPE /* * extern void giveup_spe(struct task_struct *prev) diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 641da9e868ce..7835a5e1ea5f 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -587,7 +587,7 @@ int irq_choose_cpu(const struct cpumask *mask) { int cpuid; - if (cpumask_equal(mask, cpu_all_mask)) { + if (cpumask_equal(mask, cpu_online_mask)) { static int irq_rover; static DEFINE_RAW_SPINLOCK(irq_rover_lock); unsigned long flags; diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 7cd07b42ca1a..386d57f66f28 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -738,8 +738,23 @@ relocate_new_kernel: mr r5, r31 li r0, 0 -#elif defined(CONFIG_44x) && !defined(CONFIG_PPC_47x) +#elif defined(CONFIG_44x) + /* Save our parameters */ + mr r29, r3 + mr r30, r4 + mr r31, r5 + +#ifdef CONFIG_PPC_47x + /* Check for 47x cores */ + mfspr r3,SPRN_PVR + srwi r3,r3,16 + cmplwi cr0,r3,PVR_476@h + beq setup_map_47x + cmplwi cr0,r3,PVR_476_ISS@h + beq setup_map_47x +#endif /* CONFIG_PPC_47x */ + /* * Code for setting up 1:1 mapping for PPC440x for KEXEC * @@ -753,16 +768,15 @@ relocate_new_kernel: * 5) Invalidate the tmp mapping. * * - Based on the kexec support code for FSL BookE - * - Doesn't support 47x yet. * */ - /* Save our parameters */ - mr r29, r3 - mr r30, r4 - mr r31, r5 - /* Load our MSR_IS and TID to MMUCR for TLB search */ - mfspr r3,SPRN_PID + /* + * Load the PID with kernel PID (0). + * Also load our MSR_IS and TID to MMUCR for TLB search. + */ + li r3, 0 + mtspr SPRN_PID, r3 mfmsr r4 andi. r4,r4,MSR_IS@l beq wmmucr @@ -900,6 +914,179 @@ next_tlb: li r3, 0 tlbwe r3, r24, PPC44x_TLB_PAGEID sync + b ppc44x_map_done + +#ifdef CONFIG_PPC_47x + + /* 1:1 mapping for 47x */ + +setup_map_47x: + + /* + * Load the kernel pid (0) to PID and also to MMUCR[TID]. + * Also set the MSR IS->MMUCR STS + */ + li r3, 0 + mtspr SPRN_PID, r3 /* Set PID */ + mfmsr r4 /* Get MSR */ + andi. r4, r4, MSR_IS@l /* TS=1? */ + beq 1f /* If not, leave STS=0 */ + oris r3, r3, PPC47x_MMUCR_STS@h /* Set STS=1 */ +1: mtspr SPRN_MMUCR, r3 /* Put MMUCR */ + sync + + /* Find the entry we are running from */ + bl 2f +2: mflr r23 + tlbsx r23, 0, r23 + tlbre r24, r23, 0 /* TLB Word 0 */ + tlbre r25, r23, 1 /* TLB Word 1 */ + tlbre r26, r23, 2 /* TLB Word 2 */ + + + /* + * Invalidates all the tlb entries by writing to 256 RPNs(r4) + * of 4k page size in all 4 ways (0-3 in r3). + * This would invalidate the entire UTLB including the one we are + * running from. However the shadow TLB entries would help us + * to continue the execution, until we flush them (rfi/isync). + */ + addis r3, 0, 0x8000 /* specify the way */ + addi r4, 0, 0 /* TLB Word0 = (EPN=0, VALID = 0) */ + addi r5, 0, 0 + b clear_utlb_entry + + /* Align the loop to speed things up. from head_44x.S */ + .align 6 + +clear_utlb_entry: + + tlbwe r4, r3, 0 + tlbwe r5, r3, 1 + tlbwe r5, r3, 2 + addis r3, r3, 0x2000 /* Increment the way */ + cmpwi r3, 0 + bne clear_utlb_entry + addis r3, 0, 0x8000 + addis r4, r4, 0x100 /* Increment the EPN */ + cmpwi r4, 0 + bne clear_utlb_entry + + /* Create the entries in the other address space */ + mfmsr r5 + rlwinm r7, r5, 27, 31, 31 /* Get the TS (Bit 26) from MSR */ + xori r7, r7, 1 /* r7 = !TS */ + + insrwi r24, r7, 1, 21 /* Change the TS in the saved TLB word 0 */ + + /* + * write out the TLB entries for the tmp mapping + * Use way '0' so that we could easily invalidate it later. + */ + lis r3, 0x8000 /* Way '0' */ + + tlbwe r24, r3, 0 + tlbwe r25, r3, 1 + tlbwe r26, r3, 2 + + /* Update the msr to the new TS */ + insrwi r5, r7, 1, 26 + + bl 1f +1: mflr r6 + addi r6, r6, (2f-1b) + + mtspr SPRN_SRR0, r6 + mtspr SPRN_SRR1, r5 + rfi + + /* + * Now we are in the tmp address space. + * Create a 1:1 mapping for 0-2GiB in the original TS. + */ +2: + li r3, 0 + li r4, 0 /* TLB Word 0 */ + li r5, 0 /* TLB Word 1 */ + li r6, 0 + ori r6, r6, PPC47x_TLB2_S_RWX /* TLB word 2 */ + + li r8, 0 /* PageIndex */ + + xori r7, r7, 1 /* revert back to original TS */ + +write_utlb: + rotlwi r5, r8, 28 /* RPN = PageIndex * 256M */ + /* ERPN = 0 as we don't use memory above 2G */ + + mr r4, r5 /* EPN = RPN */ + ori r4, r4, (PPC47x_TLB0_VALID | PPC47x_TLB0_256M) + insrwi r4, r7, 1, 21 /* Insert the TS to Word 0 */ + + tlbwe r4, r3, 0 /* Write out the entries */ + tlbwe r5, r3, 1 + tlbwe r6, r3, 2 + addi r8, r8, 1 + cmpwi r8, 8 /* Have we completed ? */ + bne write_utlb + + /* make sure we complete the TLB write up */ + isync + + /* + * Prepare to jump to the 1:1 mapping. + * 1) Extract page size of the tmp mapping + * DSIZ = TLB_Word0[22:27] + * 2) Calculate the physical address of the address + * to jump to. + */ + rlwinm r10, r24, 0, 22, 27 + + cmpwi r10, PPC47x_TLB0_4K + bne 0f + li r10, 0x1000 /* r10 = 4k */ + bl 1f + +0: + /* Defaults to 256M */ + lis r10, 0x1000 + + bl 1f +1: mflr r4 + addi r4, r4, (2f-1b) /* virtual address of 2f */ + + subi r11, r10, 1 /* offsetmask = Pagesize - 1 */ + not r10, r11 /* Pagemask = ~(offsetmask) */ + + and r5, r25, r10 /* Physical page */ + and r6, r4, r11 /* offset within the current page */ + + or r5, r5, r6 /* Physical address for 2f */ + + /* Switch the TS in MSR to the original one */ + mfmsr r8 + insrwi r8, r7, 1, 26 + + mtspr SPRN_SRR1, r8 + mtspr SPRN_SRR0, r5 + rfi + +2: + /* Invalidate the tmp mapping */ + lis r3, 0x8000 /* Way '0' */ + + clrrwi r24, r24, 12 /* Clear the valid bit */ + tlbwe r24, r3, 0 + tlbwe r25, r3, 1 + tlbwe r26, r3, 2 + + /* Make sure we complete the TLB write and flush the shadow TLB */ + isync + +#endif + +ppc44x_map_done: + /* Restore the parameters */ mr r3, r29 diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index 0bb1f98613ba..fbe1a12dc7f1 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -36,10 +36,7 @@ struct lppaca lppaca[] = { [0 ... (NR_LPPACAS-1)] = { .desc = 0xd397d781, /* "LpPa" */ .size = sizeof(struct lppaca), - .dyn_proc_status = 2, - .decr_val = 0x00ff0000, .fpregs_in_use = 1, - .end_of_quantum = 0xfffffffffffffffful, .slb_count = 64, .vmxregs_in_use = 0, .page_ins = 0, diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index aa05935b6947..7f8ec1de0ace 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -124,7 +124,7 @@ void enable_kernel_altivec(void) if (current->thread.regs && (current->thread.regs->msr & MSR_VEC)) giveup_altivec(current); else - giveup_altivec(NULL); /* just enable AltiVec for kernel - force */ + giveup_altivec_notask(); #else giveup_altivec(last_task_used_altivec); #endif /* CONFIG_SMP */ diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 99860273211b..1b488e5305c5 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -680,6 +680,9 @@ static void __init early_cmdline_parse(void) #define OV3_VMX 0x40 /* VMX/Altivec */ #define OV3_DFP 0x20 /* decimal FP */ +/* Option vector 4: IBM PAPR implementation */ +#define OV4_MIN_ENT_CAP 0x01 /* minimum VP entitled capacity */ + /* Option vector 5: PAPR/OF options supported */ #define OV5_LPAR 0x80 /* logical partitioning supported */ #define OV5_SPLPAR 0x40 /* shared-processor LPAR supported */ @@ -701,6 +704,8 @@ static void __init early_cmdline_parse(void) #define OV5_XCMO 0x00 #endif #define OV5_TYPE1_AFFINITY 0x80 /* Type 1 NUMA affinity */ +#define OV5_PFO_HW_RNG 0x80 /* PFO Random Number Generator */ +#define OV5_PFO_HW_ENCR 0x20 /* PFO Encryption Accelerator */ /* Option Vector 6: IBM PAPR hints */ #define OV6_LINUX 0x02 /* Linux is our OS */ @@ -744,11 +749,12 @@ static unsigned char ibm_architecture_vec[] = { OV3_FP | OV3_VMX | OV3_DFP, /* option vector 4: IBM PAPR implementation */ - 2 - 2, /* length */ + 3 - 2, /* length */ 0, /* don't halt */ + OV4_MIN_ENT_CAP, /* minimum VP entitled capacity */ /* option vector 5: PAPR/OF options */ - 13 - 2, /* length */ + 18 - 2, /* length */ 0, /* don't ignore, don't halt */ OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY | OV5_DONATE_DEDICATE_CPU | OV5_MSI, @@ -762,8 +768,13 @@ static unsigned char ibm_architecture_vec[] = { * must match by the macro below. Update the definition if * the structure layout changes. */ -#define IBM_ARCH_VEC_NRCORES_OFFSET 100 +#define IBM_ARCH_VEC_NRCORES_OFFSET 101 W(NR_CPUS), /* number of cores supported */ + 0, + 0, + 0, + 0, + OV5_PFO_HW_RNG | OV5_PFO_HW_ENCR, /* option vector 6: IBM PAPR hints */ 4 - 2, /* length */ diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index dd5e214cdf21..c10fc28b9092 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -1432,40 +1432,6 @@ static long ppc_del_hwdebug(struct task_struct *child, long addr, long data) #endif } -/* - * Here are the old "legacy" powerpc specific getregs/setregs ptrace calls, - * we mark them as obsolete now, they will be removed in a future version - */ -static long arch_ptrace_old(struct task_struct *child, long request, - unsigned long addr, unsigned long data) -{ - void __user *datavp = (void __user *) data; - - switch (request) { - case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */ - return copy_regset_to_user(child, &user_ppc_native_view, - REGSET_GPR, 0, 32 * sizeof(long), - datavp); - - case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */ - return copy_regset_from_user(child, &user_ppc_native_view, - REGSET_GPR, 0, 32 * sizeof(long), - datavp); - - case PPC_PTRACE_GETFPREGS: /* Get FPRs 0 - 31. */ - return copy_regset_to_user(child, &user_ppc_native_view, - REGSET_FPR, 0, 32 * sizeof(double), - datavp); - - case PPC_PTRACE_SETFPREGS: /* Set FPRs 0 - 31. */ - return copy_regset_from_user(child, &user_ppc_native_view, - REGSET_FPR, 0, 32 * sizeof(double), - datavp); - } - - return -EPERM; -} - long arch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data) { @@ -1687,14 +1653,6 @@ long arch_ptrace(struct task_struct *child, long request, datavp); #endif - /* Old reverse args ptrace callss */ - case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */ - case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */ - case PPC_PTRACE_GETFPREGS: /* Get FPRs 0 - 31. */ - case PPC_PTRACE_SETFPREGS: /* Get FPRs 0 - 31. */ - ret = arch_ptrace_old(child, request, addr, data); - break; - default: ret = ptrace_request(child, request, addr, data); break; diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c index 469349d14a97..8c21658719d9 100644 --- a/arch/powerpc/kernel/ptrace32.c +++ b/arch/powerpc/kernel/ptrace32.c @@ -39,30 +39,6 @@ * in exit.c or in signal.c. */ -/* - * Here are the old "legacy" powerpc specific getregs/setregs ptrace calls, - * we mark them as obsolete now, they will be removed in a future version - */ -static long compat_ptrace_old(struct task_struct *child, long request, - long addr, long data) -{ - switch (request) { - case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */ - return copy_regset_to_user(child, - task_user_regset_view(current), 0, - 0, 32 * sizeof(compat_long_t), - compat_ptr(data)); - - case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */ - return copy_regset_from_user(child, - task_user_regset_view(current), 0, - 0, 32 * sizeof(compat_long_t), - compat_ptr(data)); - } - - return -EPERM; -} - /* Macros to workout the correct index for the FPR in the thread struct */ #define FPRNUMBER(i) (((i) - PT_FPR0) >> 1) #define FPRHALF(i) (((i) - PT_FPR0) & 1) @@ -308,8 +284,6 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, case PTRACE_SETVSRREGS: case PTRACE_GETREGS64: case PTRACE_SETREGS64: - case PPC_PTRACE_GETFPREGS: - case PPC_PTRACE_SETFPREGS: case PTRACE_KILL: case PTRACE_SINGLESTEP: case PTRACE_DETACH: @@ -322,12 +296,6 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, ret = arch_ptrace(child, request, addr, data); break; - /* Old reverse args ptrace callss */ - case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */ - case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */ - ret = compat_ptrace_old(child, request, addr, data); - break; - default: ret = compat_ptrace_request(child, request, addr, data); break; diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S index 4d5a3edff49e..e830289d2e48 100644 --- a/arch/powerpc/kernel/vector.S +++ b/arch/powerpc/kernel/vector.S @@ -89,6 +89,16 @@ _GLOBAL(load_up_altivec) /* restore registers and return */ blr +_GLOBAL(giveup_altivec_notask) + mfmsr r3 + andis. r4,r3,MSR_VEC@h + bnelr /* Already enabled? */ + oris r3,r3,MSR_VEC@h + SYNC + MTMSRD(r3) /* enable use of VMX now */ + isync + blr + /* * giveup_altivec(tsk) * Disable VMX for the task given as the argument, diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index a3a99901c8ec..cb87301ccd55 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -14,7 +14,9 @@ * 2 of the License, or (at your option) any later version. */ +#include <linux/cpu.h> #include <linux/types.h> +#include <linux/delay.h> #include <linux/stat.h> #include <linux/device.h> #include <linux/init.h> @@ -709,13 +711,26 @@ static int vio_cmo_bus_probe(struct vio_dev *viodev) struct vio_driver *viodrv = to_vio_driver(dev->driver); unsigned long flags; size_t size; + bool dma_capable = false; + + /* A device requires entitlement if it has a DMA window property */ + switch (viodev->family) { + case VDEVICE: + if (of_get_property(viodev->dev.of_node, + "ibm,my-dma-window", NULL)) + dma_capable = true; + break; + case PFO: + dma_capable = false; + break; + default: + dev_warn(dev, "unknown device family: %d\n", viodev->family); + BUG(); + break; + } - /* - * Check to see that device has a DMA window and configure - * entitlement for the device. - */ - if (of_get_property(viodev->dev.of_node, - "ibm,my-dma-window", NULL)) { + /* Configure entitlement for the device. */ + if (dma_capable) { /* Check that the driver is CMO enabled and get desired DMA */ if (!viodrv->get_desired_dma) { dev_err(dev, "%s: device driver does not support CMO\n", @@ -1050,6 +1065,94 @@ static void vio_cmo_sysfs_init(void) { } EXPORT_SYMBOL(vio_cmo_entitlement_update); EXPORT_SYMBOL(vio_cmo_set_dev_desired); + +/* + * Platform Facilities Option (PFO) support + */ + +/** + * vio_h_cop_sync - Perform a synchronous PFO co-processor operation + * + * @vdev - Pointer to a struct vio_dev for device + * @op - Pointer to a struct vio_pfo_op for the operation parameters + * + * Calls the hypervisor to synchronously perform the PFO operation + * described in @op. In the case of a busy response from the hypervisor, + * the operation will be re-submitted indefinitely unless a non-zero timeout + * is specified or an error occurs. The timeout places a limit on when to + * stop re-submitting a operation, the total time can be exceeded if an + * operation is in progress. + * + * If op->hcall_ret is not NULL, this will be set to the return from the + * last h_cop_op call or it will be 0 if an error not involving the h_call + * was encountered. + * + * Returns: + * 0 on success, + * -EINVAL if the h_call fails due to an invalid parameter, + * -E2BIG if the h_call can not be performed synchronously, + * -EBUSY if a timeout is specified and has elapsed, + * -EACCES if the memory area for data/status has been rescinded, or + * -EPERM if a hardware fault has been indicated + */ +int vio_h_cop_sync(struct vio_dev *vdev, struct vio_pfo_op *op) +{ + struct device *dev = &vdev->dev; + unsigned long deadline = 0; + long hret = 0; + int ret = 0; + + if (op->timeout) + deadline = jiffies + msecs_to_jiffies(op->timeout); + + while (true) { + hret = plpar_hcall_norets(H_COP, op->flags, + vdev->resource_id, + op->in, op->inlen, op->out, + op->outlen, op->csbcpb); + + if (hret == H_SUCCESS || + (hret != H_NOT_ENOUGH_RESOURCES && + hret != H_BUSY && hret != H_RESOURCE) || + (op->timeout && time_after(deadline, jiffies))) + break; + + dev_dbg(dev, "%s: hcall ret(%ld), retrying.\n", __func__, hret); + } + + switch (hret) { + case H_SUCCESS: + ret = 0; + break; + case H_OP_MODE: + case H_TOO_BIG: + ret = -E2BIG; + break; + case H_RESCINDED: + ret = -EACCES; + break; + case H_HARDWARE: + ret = -EPERM; + break; + case H_NOT_ENOUGH_RESOURCES: + case H_RESOURCE: + case H_BUSY: + ret = -EBUSY; + break; + default: + ret = -EINVAL; + break; + } + + if (ret) + dev_dbg(dev, "%s: Sync h_cop_op failure (ret:%d) (hret:%ld)\n", + __func__, ret, hret); + + op->hcall_err = hret; + return ret; +} +EXPORT_SYMBOL(vio_h_cop_sync); + static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev) { const unsigned char *dma_window; @@ -1211,35 +1314,87 @@ static void __devinit vio_dev_release(struct device *dev) struct vio_dev *vio_register_device_node(struct device_node *of_node) { struct vio_dev *viodev; + struct device_node *parent_node; const unsigned int *unit_address; + const unsigned int *pfo_resid = NULL; + enum vio_dev_family family; + const char *of_node_name = of_node->name ? of_node->name : "<unknown>"; - /* we need the 'device_type' property, in order to match with drivers */ - if (of_node->type == NULL) { - printk(KERN_WARNING "%s: node %s missing 'device_type'\n", - __func__, - of_node->name ? of_node->name : "<unknown>"); + /* + * Determine if this node is a under the /vdevice node or under the + * /ibm,platform-facilities node. This decides the device's family. + */ + parent_node = of_get_parent(of_node); + if (parent_node) { + if (!strcmp(parent_node->full_name, "/ibm,platform-facilities")) + family = PFO; + else if (!strcmp(parent_node->full_name, "/vdevice")) + family = VDEVICE; + else { + pr_warn("%s: parent(%s) of %s not recognized.\n", + __func__, + parent_node->full_name, + of_node_name); + of_node_put(parent_node); + return NULL; + } + of_node_put(parent_node); + } else { + pr_warn("%s: could not determine the parent of node %s.\n", + __func__, of_node_name); return NULL; } - unit_address = of_get_property(of_node, "reg", NULL); - if (unit_address == NULL) { - printk(KERN_WARNING "%s: node %s missing 'reg'\n", - __func__, - of_node->name ? of_node->name : "<unknown>"); - return NULL; + if (family == PFO) { + if (of_get_property(of_node, "interrupt-controller", NULL)) { + pr_debug("%s: Skipping the interrupt controller %s.\n", + __func__, of_node_name); + return NULL; + } } /* allocate a vio_dev for this node */ viodev = kzalloc(sizeof(struct vio_dev), GFP_KERNEL); - if (viodev == NULL) + if (viodev == NULL) { + pr_warn("%s: allocation failure for VIO device.\n", __func__); return NULL; + } - viodev->irq = irq_of_parse_and_map(of_node, 0); + /* we need the 'device_type' property, in order to match with drivers */ + viodev->family = family; + if (viodev->family == VDEVICE) { + if (of_node->type != NULL) + viodev->type = of_node->type; + else { + pr_warn("%s: node %s is missing the 'device_type' " + "property.\n", __func__, of_node_name); + goto out; + } + + unit_address = of_get_property(of_node, "reg", NULL); + if (unit_address == NULL) { + pr_warn("%s: node %s missing 'reg'\n", + __func__, of_node_name); + goto out; + } + dev_set_name(&viodev->dev, "%x", *unit_address); + viodev->irq = irq_of_parse_and_map(of_node, 0); + viodev->unit_address = *unit_address; + } else { + /* PFO devices need their resource_id for submitting COP_OPs + * This is an optional field for devices, but is required when + * performing synchronous ops */ + pfo_resid = of_get_property(of_node, "ibm,resource-id", NULL); + if (pfo_resid != NULL) + viodev->resource_id = *pfo_resid; + + unit_address = NULL; + dev_set_name(&viodev->dev, "%s", of_node_name); + viodev->type = of_node_name; + viodev->irq = 0; + } - dev_set_name(&viodev->dev, "%x", *unit_address); viodev->name = of_node->name; - viodev->type = of_node->type; - viodev->unit_address = *unit_address; viodev->dev.of_node = of_node_get(of_node); if (firmware_has_feature(FW_FEATURE_CMO)) @@ -1267,16 +1422,51 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node) } return viodev; + +out: /* Use this exit point for any return prior to device_register */ + kfree(viodev); + + return NULL; } EXPORT_SYMBOL(vio_register_device_node); +/* + * vio_bus_scan_for_devices - Scan OF and register each child device + * @root_name - OF node name for the root of the subtree to search. + * This must be non-NULL + * + * Starting from the root node provide, register the device node for + * each child beneath the root. + */ +static void vio_bus_scan_register_devices(char *root_name) +{ + struct device_node *node_root, *node_child; + + if (!root_name) + return; + + node_root = of_find_node_by_name(NULL, root_name); + if (node_root) { + + /* + * Create struct vio_devices for each virtual device in + * the device tree. Drivers will associate with them later. + */ + node_child = of_get_next_child(node_root, NULL); + while (node_child) { + vio_register_device_node(node_child); + node_child = of_get_next_child(node_root, node_child); + } + of_node_put(node_root); + } +} + /** * vio_bus_init: - Initialize the virtual IO bus */ static int __init vio_bus_init(void) { int err; - struct device_node *node_vroot; if (firmware_has_feature(FW_FEATURE_CMO)) vio_cmo_sysfs_init(); @@ -1301,19 +1491,8 @@ static int __init vio_bus_init(void) if (firmware_has_feature(FW_FEATURE_CMO)) vio_cmo_bus_init(); - node_vroot = of_find_node_by_name(NULL, "vdevice"); - if (node_vroot) { - struct device_node *of_node; - - /* - * Create struct vio_devices for each virtual device in - * the device tree. Drivers will associate with them later. - */ - for (of_node = node_vroot->child; of_node != NULL; - of_node = of_node->sibling) - vio_register_device_node(of_node); - of_node_put(node_vroot); - } + vio_bus_scan_register_devices("vdevice"); + vio_bus_scan_register_devices("ibm,platform-facilities"); return 0; } @@ -1436,12 +1615,28 @@ struct vio_dev *vio_find_node(struct device_node *vnode) { const uint32_t *unit_address; char kobj_name[20]; + struct device_node *vnode_parent; + const char *dev_type; + + vnode_parent = of_get_parent(vnode); + if (!vnode_parent) + return NULL; + + dev_type = of_get_property(vnode_parent, "device_type", NULL); + of_node_put(vnode_parent); + if (!dev_type) + return NULL; /* construct the kobject name from the device node */ - unit_address = of_get_property(vnode, "reg", NULL); - if (!unit_address) + if (!strcmp(dev_type, "vdevice")) { + unit_address = of_get_property(vnode, "reg", NULL); + if (!unit_address) + return NULL; + snprintf(kobj_name, sizeof(kobj_name), "%x", *unit_address); + } else if (!strcmp(dev_type, "ibm,platform-facilities")) + snprintf(kobj_name, sizeof(kobj_name), "%s", vnode->name); + else return NULL; - snprintf(kobj_name, sizeof(kobj_name), "%x", *unit_address); return vio_find_name(kobj_name); } diff --git a/arch/powerpc/lib/copyuser_64.S b/arch/powerpc/lib/copyuser_64.S index 773d38f90aaa..d73a59014900 100644 --- a/arch/powerpc/lib/copyuser_64.S +++ b/arch/powerpc/lib/copyuser_64.S @@ -30,7 +30,7 @@ _GLOBAL(__copy_tofrom_user_base) dcbt 0,r4 beq .Lcopy_page_4K andi. r6,r6,7 - PPC_MTOCRF 0x01,r5 + PPC_MTOCRF(0x01,r5) blt cr1,.Lshort_copy /* Below we want to nop out the bne if we're on a CPU that has the * CPU_FTR_UNALIGNED_LD_STD bit set and the CPU_FTR_CP_USE_DCBTZ bit @@ -186,7 +186,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) blr .Ldst_unaligned: - PPC_MTOCRF 0x01,r6 /* put #bytes to 8B bdry into cr7 */ + PPC_MTOCRF(0x01,r6) /* put #bytes to 8B bdry into cr7 */ subf r5,r6,r5 li r7,0 cmpldi cr1,r5,16 @@ -201,7 +201,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) 2: bf cr7*4+1,3f 37: lwzx r0,r7,r4 83: stwx r0,r7,r3 -3: PPC_MTOCRF 0x01,r5 +3: PPC_MTOCRF(0x01,r5) add r4,r6,r4 add r3,r6,r3 b .Ldst_aligned diff --git a/arch/powerpc/lib/mem_64.S b/arch/powerpc/lib/mem_64.S index 11ce045e21fd..f4fcb0bc6563 100644 --- a/arch/powerpc/lib/mem_64.S +++ b/arch/powerpc/lib/mem_64.S @@ -19,7 +19,7 @@ _GLOBAL(memset) rlwimi r4,r4,16,0,15 cmplw cr1,r5,r0 /* do we get that far? */ rldimi r4,r4,32,0 - PPC_MTOCRF 1,r0 + PPC_MTOCRF(1,r0) mr r6,r3 blt cr1,8f beq+ 3f /* if already 8-byte aligned */ @@ -49,7 +49,7 @@ _GLOBAL(memset) bdnz 4b 5: srwi. r0,r5,3 clrlwi r5,r5,29 - PPC_MTOCRF 1,r0 + PPC_MTOCRF(1,r0) beq 8f bf 29,6f std r4,0(r6) @@ -65,7 +65,7 @@ _GLOBAL(memset) std r4,0(r6) addi r6,r6,8 8: cmpwi r5,0 - PPC_MTOCRF 1,r5 + PPC_MTOCRF(1,r5) beqlr+ bf 29,9f stw r4,0(r6) diff --git a/arch/powerpc/lib/memcpy_64.S b/arch/powerpc/lib/memcpy_64.S index e178922b2c21..82fea3963e15 100644 --- a/arch/powerpc/lib/memcpy_64.S +++ b/arch/powerpc/lib/memcpy_64.S @@ -12,7 +12,7 @@ .align 7 _GLOBAL(memcpy) std r3,48(r1) /* save destination pointer for return value */ - PPC_MTOCRF 0x01,r5 + PPC_MTOCRF(0x01,r5) cmpldi cr1,r5,16 neg r6,r3 # LS 3 bits = # bytes to 8-byte dest bdry andi. r6,r6,7 @@ -154,7 +154,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) blr .Ldst_unaligned: - PPC_MTOCRF 0x01,r6 # put #bytes to 8B bdry into cr7 + PPC_MTOCRF(0x01,r6) # put #bytes to 8B bdry into cr7 subf r5,r6,r5 li r7,0 cmpldi cr1,r5,16 @@ -169,7 +169,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) 2: bf cr7*4+1,3f lwzx r0,r7,r4 stwx r0,r7,r3 -3: PPC_MTOCRF 0x01,r5 +3: PPC_MTOCRF(0x01,r5) add r4,r6,r4 add r3,r6,r3 b .Ldst_aligned diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig index 2e4e64abfab4..8abf6fb8f410 100644 --- a/arch/powerpc/platforms/44x/Kconfig +++ b/arch/powerpc/platforms/44x/Kconfig @@ -23,6 +23,8 @@ config BLUESTONE default n select PPC44x_SIMPLE select APM821xx + select PCI_MSI + select PPC4xx_MSI select PPC4xx_PCI_EXPRESS select IBM_EMAC_RGMII help diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 9c80fc07384a..61c9550819a2 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -78,6 +78,36 @@ config PPC_BOOK3E_64 endchoice +choice + prompt "CPU selection" + depends on PPC64 + default GENERIC_CPU + help + This will create a kernel which is optimised for a particular CPU. + The resulting kernel may not run on other CPUs, so use this with care. + + If unsure, select Generic. + +config GENERIC_CPU + bool "Generic" + +config CELL_CPU + bool "Cell Broadband Engine" + +config POWER4_CPU + bool "POWER4" + +config POWER5_CPU + bool "POWER5" + +config POWER6_CPU + bool "POWER6" + +config POWER7_CPU + bool "POWER7" + +endchoice + config PPC_BOOK3S def_bool y depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 @@ -86,15 +116,6 @@ config PPC_BOOK3E def_bool y depends on PPC_BOOK3E_64 -config POWER4_ONLY - bool "Optimize for POWER4" - depends on PPC64 && PPC_BOOK3S - default n - ---help--- - Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. - The resulting binary will not work on POWER3 or RS64 processors - when compiled with binutils 2.15 or later. - config 6xx def_bool y depends on PPC32 && PPC_BOOK3S diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c index 03685a329d7d..fc536f2971c0 100644 --- a/arch/powerpc/platforms/powermac/low_i2c.c +++ b/arch/powerpc/platforms/powermac/low_i2c.c @@ -1503,6 +1503,7 @@ static int __init pmac_i2c_create_platform_devices(void) if (bus->platform_dev == NULL) return -ENOMEM; bus->platform_dev->dev.platform_data = bus; + bus->platform_dev->dev.of_node = bus->busnode; platform_device_add(bus->platform_dev); } diff --git a/arch/powerpc/platforms/ps3/Kconfig b/arch/powerpc/platforms/ps3/Kconfig index 476d9d9b2405..46b7f0232523 100644 --- a/arch/powerpc/platforms/ps3/Kconfig +++ b/arch/powerpc/platforms/ps3/Kconfig @@ -7,7 +7,6 @@ config PPC_PS3 select USB_OHCI_BIG_ENDIAN_MMIO select USB_ARCH_HAS_EHCI select USB_EHCI_BIG_ENDIAN_MMIO - select MEMORY_HOTPLUG select PPC_PCI_CHOICE help This option enables support for the Sony PS3 game console @@ -74,7 +73,7 @@ config PS3_PS3AV help Include support for the PS3 AV Settings driver. - This support is required for graphics and sound. In + This support is required for PS3 graphics and sound. In general, all users will say Y or M. config PS3_SYS_MANAGER @@ -85,9 +84,22 @@ config PS3_SYS_MANAGER help Include support for the PS3 System Manager. - This support is required for system control. In + This support is required for PS3 system control. In general, all users will say Y or M. +config PS3_REPOSITORY_WRITE + bool "PS3 Repository write support" if PS3_ADVANCED + depends on PPC_PS3 + default n + help + Enables support for writing to the PS3 System Repository. + + This support is intended for bootloaders that need to store data + in the repository for later boot stages. + + If in doubt, say N here and reduce the size of the kernel by a + small amount. + config PS3_STORAGE depends on PPC_PS3 tristate @@ -122,7 +134,7 @@ config PS3_FLASH This support is required to access the PS3 FLASH ROM, which contains the boot loader and some boot options. - In general, all users will say Y or M. + In general, PS3 OtherOS users will say Y or M. As this driver needs a fixed buffer of 256 KiB of memory, it can be disabled on the kernel command line using "ps3flash=off", to @@ -156,7 +168,7 @@ config PS3GELIC_UDBG via the Ethernet port (UDP port number 18194). This driver uses a trivial implementation and is independent - from the main network driver. + from the main PS3 gelic network driver. If in doubt, say N here. diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c index de2aea421707..0c9f643d9e2a 100644 --- a/arch/powerpc/platforms/ps3/mm.c +++ b/arch/powerpc/platforms/ps3/mm.c @@ -20,7 +20,6 @@ #include <linux/kernel.h> #include <linux/export.h> -#include <linux/memory_hotplug.h> #include <linux/memblock.h> #include <linux/slab.h> @@ -79,12 +78,14 @@ enum { * @base: base address * @size: size in bytes * @offset: difference between base and rm.size + * @destroy: flag if region should be destroyed upon shutdown */ struct mem_region { u64 base; u64 size; unsigned long offset; + int destroy; }; /** @@ -96,7 +97,7 @@ struct mem_region { * The HV virtual address space (vas) allows for hotplug memory regions. * Memory regions can be created and destroyed in the vas at runtime. * @rm: real mode (bootmem) region - * @r1: hotplug memory region(s) + * @r1: highmem region(s) * * ps3 addresses * virt_addr: a cpu 'translated' effective address @@ -222,10 +223,6 @@ void ps3_mm_vas_destroy(void) } } -/*============================================================================*/ -/* memory hotplug routines */ -/*============================================================================*/ - /** * ps3_mm_region_create - create a memory region in the vas * @r: pointer to a struct mem_region to accept initialized values @@ -262,6 +259,7 @@ static int ps3_mm_region_create(struct mem_region *r, unsigned long size) goto zero_region; } + r->destroy = 1; r->offset = r->base - map.rm.size; return result; @@ -279,7 +277,14 @@ static void ps3_mm_region_destroy(struct mem_region *r) { int result; + if (!r->destroy) { + pr_info("%s:%d: Not destroying high region: %llxh %llxh\n", + __func__, __LINE__, r->base, r->size); + return; + } + DBG("%s:%d: r->base = %llxh\n", __func__, __LINE__, r->base); + if (r->base) { result = lv1_release_memory(r->base); BUG_ON(result); @@ -288,50 +293,36 @@ static void ps3_mm_region_destroy(struct mem_region *r) } } -/** - * ps3_mm_add_memory - hot add memory - */ - -static int __init ps3_mm_add_memory(void) +static int ps3_mm_get_repository_highmem(struct mem_region *r) { int result; - unsigned long start_addr; - unsigned long start_pfn; - unsigned long nr_pages; - - if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) - return -ENODEV; - BUG_ON(!mem_init_done); + /* Assume a single highmem region. */ - start_addr = map.rm.size; - start_pfn = start_addr >> PAGE_SHIFT; - nr_pages = (map.r1.size + PAGE_SIZE - 1) >> PAGE_SHIFT; + result = ps3_repository_read_highmem_info(0, &r->base, &r->size); - DBG("%s:%d: start_addr %lxh, start_pfn %lxh, nr_pages %lxh\n", - __func__, __LINE__, start_addr, start_pfn, nr_pages); - - result = add_memory(0, start_addr, map.r1.size); + if (result) + goto zero_region; - if (result) { - pr_err("%s:%d: add_memory failed: (%d)\n", - __func__, __LINE__, result); - return result; + if (!r->base || !r->size) { + result = -1; + goto zero_region; } - memblock_add(start_addr, map.r1.size); + r->offset = r->base - map.rm.size; - result = online_pages(start_pfn, nr_pages); + DBG("%s:%d: Found high region in repository: %llxh %llxh\n", + __func__, __LINE__, r->base, r->size); - if (result) - pr_err("%s:%d: online_pages failed: (%d)\n", - __func__, __LINE__, result); + return 0; +zero_region: + DBG("%s:%d: No high region in repository.\n", __func__, __LINE__); + + r->size = r->base = r->offset = 0; return result; } -device_initcall(ps3_mm_add_memory); - /*============================================================================*/ /* dma routines */ /*============================================================================*/ @@ -1217,13 +1208,23 @@ void __init ps3_mm_init(void) BUG_ON(map.rm.base); BUG_ON(!map.rm.size); + /* Check if we got the highmem region from an earlier boot step */ - /* arrange to do this in ps3_mm_add_memory */ - ps3_mm_region_create(&map.r1, map.total - map.rm.size); + if (ps3_mm_get_repository_highmem(&map.r1)) + ps3_mm_region_create(&map.r1, map.total - map.rm.size); /* correct map.total for the real total amount of memory we use */ map.total = map.rm.size + map.r1.size; + if (!map.r1.size) { + DBG("%s:%d: No highmem region found\n", __func__, __LINE__); + } else { + DBG("%s:%d: Adding highmem region: %llxh %llxh\n", + __func__, __LINE__, map.rm.size, + map.total - map.rm.size); + memblock_add(map.rm.size, map.total - map.rm.size); + } + DBG(" <- %s:%d\n", __func__, __LINE__); } diff --git a/arch/powerpc/platforms/ps3/platform.h b/arch/powerpc/platforms/ps3/platform.h index 1a633ed0fe98..d71329a8e325 100644 --- a/arch/powerpc/platforms/ps3/platform.h +++ b/arch/powerpc/platforms/ps3/platform.h @@ -188,6 +188,22 @@ int ps3_repository_read_rm_size(unsigned int ppe_id, u64 *rm_size); int ps3_repository_read_region_total(u64 *region_total); int ps3_repository_read_mm_info(u64 *rm_base, u64 *rm_size, u64 *region_total); +int ps3_repository_read_highmem_region_count(unsigned int *region_count); +int ps3_repository_read_highmem_base(unsigned int region_index, + u64 *highmem_base); +int ps3_repository_read_highmem_size(unsigned int region_index, + u64 *highmem_size); +int ps3_repository_read_highmem_info(unsigned int region_index, + u64 *highmem_base, u64 *highmem_size); + +int ps3_repository_write_highmem_region_count(unsigned int region_count); +int ps3_repository_write_highmem_base(unsigned int region_index, + u64 highmem_base); +int ps3_repository_write_highmem_size(unsigned int region_index, + u64 highmem_size); +int ps3_repository_write_highmem_info(unsigned int region_index, + u64 highmem_base, u64 highmem_size); +int ps3_repository_delete_highmem_info(unsigned int region_index); /* repository pme info */ diff --git a/arch/powerpc/platforms/ps3/repository.c b/arch/powerpc/platforms/ps3/repository.c index 7bdfea336f5e..9b47ba7a5de7 100644 --- a/arch/powerpc/platforms/ps3/repository.c +++ b/arch/powerpc/platforms/ps3/repository.c @@ -779,6 +779,72 @@ int ps3_repository_read_mm_info(u64 *rm_base, u64 *rm_size, u64 *region_total) } /** + * ps3_repository_read_highmem_region_count - Read the number of highmem regions + * + * Bootloaders must arrange the repository nodes such that regions are indexed + * with a region_index from 0 to region_count-1. + */ + +int ps3_repository_read_highmem_region_count(unsigned int *region_count) +{ + int result; + u64 v1 = 0; + + result = read_node(PS3_LPAR_ID_CURRENT, + make_first_field("highmem", 0), + make_field("region", 0), + make_field("count", 0), + 0, + &v1, NULL); + *region_count = v1; + return result; +} + + +int ps3_repository_read_highmem_base(unsigned int region_index, + u64 *highmem_base) +{ + return read_node(PS3_LPAR_ID_CURRENT, + make_first_field("highmem", 0), + make_field("region", region_index), + make_field("base", 0), + 0, + highmem_base, NULL); +} + +int ps3_repository_read_highmem_size(unsigned int region_index, + u64 *highmem_size) +{ + return read_node(PS3_LPAR_ID_CURRENT, + make_first_field("highmem", 0), + make_field("region", region_index), + make_field("size", 0), + 0, + highmem_size, NULL); +} + +/** + * ps3_repository_read_highmem_info - Read high memory region info + * @region_index: Region index, {0,..,region_count-1}. + * @highmem_base: High memory base address. + * @highmem_size: High memory size. + * + * Bootloaders that preallocate highmem regions must place the + * region info into the repository at these well known nodes. + */ + +int ps3_repository_read_highmem_info(unsigned int region_index, + u64 *highmem_base, u64 *highmem_size) +{ + int result; + + *highmem_base = 0; + result = ps3_repository_read_highmem_base(region_index, highmem_base); + return result ? result + : ps3_repository_read_highmem_size(region_index, highmem_size); +} + +/** * ps3_repository_read_num_spu_reserved - Number of physical spus reserved. * @num_spu: Number of physical spus. */ @@ -1002,6 +1068,138 @@ int ps3_repository_read_lpm_privileges(unsigned int be_index, u64 *lpar, lpar, rights); } +#if defined(CONFIG_PS3_REPOSITORY_WRITE) + +static int create_node(u64 n1, u64 n2, u64 n3, u64 n4, u64 v1, u64 v2) +{ + int result; + + dump_node(0, n1, n2, n3, n4, v1, v2); + + result = lv1_create_repository_node(n1, n2, n3, n4, v1, v2); + + if (result) { + pr_devel("%s:%d: lv1_create_repository_node failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return -ENOENT; + } + + return 0; +} + +static int delete_node(u64 n1, u64 n2, u64 n3, u64 n4) +{ + int result; + + dump_node(0, n1, n2, n3, n4, 0, 0); + + result = lv1_delete_repository_node(n1, n2, n3, n4); + + if (result) { + pr_devel("%s:%d: lv1_delete_repository_node failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return -ENOENT; + } + + return 0; +} + +static int write_node(u64 n1, u64 n2, u64 n3, u64 n4, u64 v1, u64 v2) +{ + int result; + + result = create_node(n1, n2, n3, n4, v1, v2); + + if (!result) + return 0; + + result = lv1_write_repository_node(n1, n2, n3, n4, v1, v2); + + if (result) { + pr_devel("%s:%d: lv1_write_repository_node failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return -ENOENT; + } + + return 0; +} + +int ps3_repository_write_highmem_region_count(unsigned int region_count) +{ + int result; + u64 v1 = (u64)region_count; + + result = write_node( + make_first_field("highmem", 0), + make_field("region", 0), + make_field("count", 0), + 0, + v1, 0); + return result; +} + +int ps3_repository_write_highmem_base(unsigned int region_index, + u64 highmem_base) +{ + return write_node( + make_first_field("highmem", 0), + make_field("region", region_index), + make_field("base", 0), + 0, + highmem_base, 0); +} + +int ps3_repository_write_highmem_size(unsigned int region_index, + u64 highmem_size) +{ + return write_node( + make_first_field("highmem", 0), + make_field("region", region_index), + make_field("size", 0), + 0, + highmem_size, 0); +} + +int ps3_repository_write_highmem_info(unsigned int region_index, + u64 highmem_base, u64 highmem_size) +{ + int result; + + result = ps3_repository_write_highmem_base(region_index, highmem_base); + return result ? result + : ps3_repository_write_highmem_size(region_index, highmem_size); +} + +static int ps3_repository_delete_highmem_base(unsigned int region_index) +{ + return delete_node( + make_first_field("highmem", 0), + make_field("region", region_index), + make_field("base", 0), + 0); +} + +static int ps3_repository_delete_highmem_size(unsigned int region_index) +{ + return delete_node( + make_first_field("highmem", 0), + make_field("region", region_index), + make_field("size", 0), + 0); +} + +int ps3_repository_delete_highmem_info(unsigned int region_index) +{ + int result; + + result = ps3_repository_delete_highmem_base(region_index); + result += ps3_repository_delete_highmem_size(region_index); + + return result ? -1 : 0; +} + +#endif /* defined(CONFIG_PS3_WRITE_REPOSITORY) */ + #if defined(DEBUG) int ps3_repository_dump_resource_info(const struct ps3_repository_device *repo) diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index a75e37dc41aa..ecd394cf34e6 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -489,7 +489,7 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev) * a stack trace will help the device-driver authors figure * out what happened. So print that out. */ - dump_stack(); + WARN(1, "EEH: failure detected\n"); return 1; dn_unlock: diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h index 342797fc0f9c..13e8cc43adf7 100644 --- a/arch/powerpc/platforms/pseries/plpar_wrappers.h +++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h @@ -22,12 +22,12 @@ static inline long poll_pending(void) static inline u8 get_cede_latency_hint(void) { - return get_lppaca()->gpr5_dword.fields.cede_latency_hint; + return get_lppaca()->cede_latency_hint; } static inline void set_cede_latency_hint(u8 latency_hint) { - get_lppaca()->gpr5_dword.fields.cede_latency_hint = latency_hint; + get_lppaca()->cede_latency_hint = latency_hint; } static inline long cede_processor(void) diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c index 168651acdd83..7b3bf76ef834 100644 --- a/arch/powerpc/platforms/pseries/reconfig.c +++ b/arch/powerpc/platforms/pseries/reconfig.c @@ -103,11 +103,13 @@ int pSeries_reconfig_notifier_register(struct notifier_block *nb) { return blocking_notifier_chain_register(&pSeries_reconfig_chain, nb); } +EXPORT_SYMBOL_GPL(pSeries_reconfig_notifier_register); void pSeries_reconfig_notifier_unregister(struct notifier_block *nb) { blocking_notifier_chain_unregister(&pSeries_reconfig_chain, nb); } +EXPORT_SYMBOL_GPL(pSeries_reconfig_notifier_unregister); int pSeries_reconfig_notify(unsigned long action, void *p) { @@ -426,6 +428,7 @@ static int do_remove_property(char *buf, size_t bufsize) static int do_update_property(char *buf, size_t bufsize) { struct device_node *np; + struct pSeries_reconfig_prop_update upd_value; unsigned char *value; char *name, *end, *next_prop; int rc, length; @@ -454,6 +457,10 @@ static int do_update_property(char *buf, size_t bufsize) return -ENODEV; } + upd_value.node = np; + upd_value.property = newprop; + pSeries_reconfig_notify(PSERIES_UPDATE_PROPERTY, &upd_value); + rc = prom_update_property(np, newprop, oldprop); if (rc) return rc; diff --git a/arch/powerpc/sysdev/ppc4xx_msi.c b/arch/powerpc/sysdev/ppc4xx_msi.c index 1c2d7af17bbe..82c6702dcbab 100644 --- a/arch/powerpc/sysdev/ppc4xx_msi.c +++ b/arch/powerpc/sysdev/ppc4xx_msi.c @@ -28,10 +28,11 @@ #include <linux/of_platform.h> #include <linux/interrupt.h> #include <linux/export.h> +#include <linux/kernel.h> #include <asm/prom.h> #include <asm/hw_irq.h> #include <asm/ppc-pci.h> -#include <boot/dcr.h> +#include <asm/dcr.h> #include <asm/dcr-regs.h> #include <asm/msi_bitmap.h> @@ -43,13 +44,14 @@ #define PEIH_FLUSH0 0x30 #define PEIH_FLUSH1 0x38 #define PEIH_CNTRST 0x48 -#define NR_MSI_IRQS 4 + +static int msi_irqs; struct ppc4xx_msi { u32 msi_addr_lo; u32 msi_addr_hi; void __iomem *msi_regs; - int msi_virqs[NR_MSI_IRQS]; + int *msi_virqs; struct msi_bitmap bitmap; struct device_node *msi_dev; }; @@ -61,7 +63,7 @@ static int ppc4xx_msi_init_allocator(struct platform_device *dev, { int err; - err = msi_bitmap_alloc(&msi_data->bitmap, NR_MSI_IRQS, + err = msi_bitmap_alloc(&msi_data->bitmap, msi_irqs, dev->dev.of_node); if (err) return err; @@ -83,6 +85,11 @@ static int ppc4xx_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) struct msi_desc *entry; struct ppc4xx_msi *msi_data = &ppc4xx_msi; + msi_data->msi_virqs = kmalloc((msi_irqs) * sizeof(int), + GFP_KERNEL); + if (!msi_data->msi_virqs) + return -ENOMEM; + list_for_each_entry(entry, &dev->msi_list, list) { int_no = msi_bitmap_alloc_hwirqs(&msi_data->bitmap, 1); if (int_no >= 0) @@ -150,12 +157,11 @@ static int ppc4xx_setup_pcieh_hw(struct platform_device *dev, if (!sdr_addr) return -1; - SDR0_WRITE(sdr_addr, (u64)res.start >> 32); /*HIGH addr */ - SDR0_WRITE(sdr_addr + 1, res.start & 0xFFFFFFFF); /* Low addr */ - + mtdcri(SDR0, *sdr_addr, upper_32_bits(res.start)); /*HIGH addr */ + mtdcri(SDR0, *sdr_addr + 1, lower_32_bits(res.start)); /* Low addr */ msi->msi_dev = of_find_node_by_name(NULL, "ppc4xx-msi"); - if (msi->msi_dev) + if (!msi->msi_dev) return -ENODEV; msi->msi_regs = of_iomap(msi->msi_dev, 0); @@ -167,9 +173,12 @@ static int ppc4xx_setup_pcieh_hw(struct platform_device *dev, (u32) (msi->msi_regs + PEIH_TERMADH), (u32) (msi->msi_regs)); msi_virt = dma_alloc_coherent(&dev->dev, 64, &msi_phys, GFP_KERNEL); - msi->msi_addr_hi = 0x0; - msi->msi_addr_lo = (u32) msi_phys; - dev_dbg(&dev->dev, "PCIE-MSI: msi address 0x%x\n", msi->msi_addr_lo); + if (!msi_virt) + return -ENOMEM; + msi->msi_addr_hi = upper_32_bits(msi_phys); + msi->msi_addr_lo = lower_32_bits(msi_phys & 0xffffffff); + dev_dbg(&dev->dev, "PCIE-MSI: msi address high 0x%x, low 0x%x\n", + msi->msi_addr_hi, msi->msi_addr_lo); /* Progam the Interrupt handler Termination addr registers */ out_be32(msi->msi_regs + PEIH_TERMADH, msi->msi_addr_hi); @@ -185,6 +194,8 @@ static int ppc4xx_setup_pcieh_hw(struct platform_device *dev, out_be32(msi->msi_regs + PEIH_MSIED, *msi_data); out_be32(msi->msi_regs + PEIH_MSIMK, *msi_mask); + dma_free_coherent(&dev->dev, 64, msi_virt, msi_phys); + return 0; } @@ -194,7 +205,7 @@ static int ppc4xx_of_msi_remove(struct platform_device *dev) int i; int virq; - for (i = 0; i < NR_MSI_IRQS; i++) { + for (i = 0; i < msi_irqs; i++) { virq = msi->msi_virqs[i]; if (virq != NO_IRQ) irq_dispose_mapping(virq); @@ -215,8 +226,6 @@ static int __devinit ppc4xx_msi_probe(struct platform_device *dev) struct resource res; int err = 0; - msi = &ppc4xx_msi;/*keep the msi data for further use*/ - dev_dbg(&dev->dev, "PCIE-MSI: Setting up MSI support...\n"); msi = kzalloc(sizeof(struct ppc4xx_msi), GFP_KERNEL); @@ -234,6 +243,10 @@ static int __devinit ppc4xx_msi_probe(struct platform_device *dev) goto error_out; } + msi_irqs = of_irq_count(dev->dev.of_node); + if (!msi_irqs) + return -ENODEV; + if (ppc4xx_setup_pcieh_hw(dev, res, msi)) goto error_out; @@ -242,6 +255,7 @@ static int __devinit ppc4xx_msi_probe(struct platform_device *dev) dev_err(&dev->dev, "Error allocating MSI bitmap\n"); goto error_out; } + ppc4xx_msi = *msi; ppc_md.setup_msi_irqs = ppc4xx_setup_msi_irqs; ppc_md.teardown_msi_irqs = ppc4xx_teardown_msi_irqs; diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index b2402eb076c7..c225314468ee 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -250,3 +250,16 @@ config UML_RANDOM (check your distro, or download from http://sourceforge.net/projects/gkernel/). rngd periodically reads /dev/hwrng and injects the entropy into /dev/random. + +config HW_RANDOM_PSERIES + tristate "pSeries HW Random Number Generator support" + depends on HW_RANDOM && PPC64 && IBMVIO + default HW_RANDOM + ---help--- + This driver provides kernel-side support for the Random Number + Generator hardware found on POWER7+ machines and above + + To compile this driver as a module, choose M here: the + module will be called pseries-rng. + + If unsure, say Y. diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile index b2ff5265a996..d901dfa30321 100644 --- a/drivers/char/hw_random/Makefile +++ b/drivers/char/hw_random/Makefile @@ -22,3 +22,4 @@ obj-$(CONFIG_HW_RANDOM_OCTEON) += octeon-rng.o obj-$(CONFIG_HW_RANDOM_NOMADIK) += nomadik-rng.o obj-$(CONFIG_HW_RANDOM_PICOXCELL) += picoxcell-rng.o obj-$(CONFIG_HW_RANDOM_PPC4XX) += ppc4xx-rng.o +obj-$(CONFIG_HW_RANDOM_PSERIES) += pseries-rng.o diff --git a/drivers/char/hw_random/pseries-rng.c b/drivers/char/hw_random/pseries-rng.c new file mode 100644 index 000000000000..5f1197929f0c --- /dev/null +++ b/drivers/char/hw_random/pseries-rng.c @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2010 Michael Neuling IBM Corporation + * + * Driver for the pseries hardware RNG for POWER7+ and above + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/module.h> +#include <linux/hw_random.h> +#include <asm/vio.h> + +#define MODULE_NAME "pseries-rng" + +static int pseries_rng_data_read(struct hwrng *rng, u32 *data) +{ + if (plpar_hcall(H_RANDOM, (unsigned long *)data) != H_SUCCESS) { + printk(KERN_ERR "pseries rng hcall error\n"); + return 0; + } + return 8; +} + +/** + * pseries_rng_get_desired_dma - Return desired DMA allocate for CMO operations + * + * This is a required function for a driver to operate in a CMO environment + * but this device does not make use of DMA allocations, return 0. + * + * Return value: + * Number of bytes of IO data the driver will need to perform well -> 0 + */ +static unsigned long pseries_rng_get_desired_dma(struct vio_dev *vdev) +{ + return 0; +}; + +static struct hwrng pseries_rng = { + .name = MODULE_NAME, + .data_read = pseries_rng_data_read, +}; + +static int __init pseries_rng_probe(struct vio_dev *dev, + const struct vio_device_id *id) +{ + return hwrng_register(&pseries_rng); +} + +static int __exit pseries_rng_remove(struct vio_dev *dev) +{ + hwrng_unregister(&pseries_rng); + return 0; +} + +static struct vio_device_id pseries_rng_driver_ids[] = { + { "ibm,random-v1", "ibm,random"}, + { "", "" } +}; +MODULE_DEVICE_TABLE(vio, pseries_rng_driver_ids); + +static struct vio_driver pseries_rng_driver = { + .name = MODULE_NAME, + .probe = pseries_rng_probe, + .remove = pseries_rng_remove, + .get_desired_dma = pseries_rng_get_desired_dma, + .id_table = pseries_rng_driver_ids +}; + +static int __init rng_init(void) +{ + printk(KERN_INFO "Registering IBM pSeries RNG driver\n"); + return vio_register_driver(&pseries_rng_driver); +} + +module_init(rng_init); + +static void __exit rng_exit(void) +{ + vio_unregister_driver(&pseries_rng_driver); +} +module_exit(rng_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Michael Neuling <mikey@neuling.org>"); +MODULE_DESCRIPTION("H/W RNG driver for IBM pSeries processors"); diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index 371f13cc38eb..6373fa0ddb65 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -297,4 +297,21 @@ config CRYPTO_DEV_TEGRA_AES To compile this driver as a module, choose M here: the module will be called tegra-aes. +config CRYPTO_DEV_NX + tristate "Support for Power7+ in-Nest cryptographic accleration" + depends on PPC64 && IBMVIO + select CRYPTO_AES + select CRYPTO_CBC + select CRYPTO_ECB + select CRYPTO_CCM + select CRYPTO_GCM + select CRYPTO_AUTHENC + select CRYPTO_XCBC + select CRYPTO_SHA256 + select CRYPTO_SHA512 + help + Support for Power7+ in-Nest cryptographic acceleration. This + module supports acceleration for AES and SHA2 algorithms. If you + choose 'M' here, this module will be called nx_crypto. + endif # CRYPTO_HW diff --git a/drivers/crypto/nx/Makefile b/drivers/crypto/nx/Makefile new file mode 100644 index 000000000000..411ce59c80d1 --- /dev/null +++ b/drivers/crypto/nx/Makefile @@ -0,0 +1,11 @@ +obj-$(CONFIG_CRYPTO_DEV_NX) += nx-crypto.o +nx-crypto-objs := nx.o \ + nx_debugfs.o \ + nx-aes-cbc.o \ + nx-aes-ecb.o \ + nx-aes-gcm.o \ + nx-aes-ccm.o \ + nx-aes-ctr.o \ + nx-aes-xcbc.o \ + nx-sha256.o \ + nx-sha512.o diff --git a/drivers/crypto/nx/nx-aes-cbc.c b/drivers/crypto/nx/nx-aes-cbc.c new file mode 100644 index 000000000000..69ed796ee327 --- /dev/null +++ b/drivers/crypto/nx/nx-aes-cbc.c @@ -0,0 +1,141 @@ +/** + * AES CBC routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2011-2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <crypto/aes.h> +#include <crypto/algapi.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/crypto.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + + +static int cbc_aes_nx_set_key(struct crypto_tfm *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + + nx_ctx_init(nx_ctx, HCOP_FC_AES); + + switch (key_len) { + case AES_KEYSIZE_128: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_128]; + break; + case AES_KEYSIZE_192: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_192); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_192]; + break; + case AES_KEYSIZE_256: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_256); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_256]; + break; + default: + return -EINVAL; + } + + csbcpb->cpb.hdr.mode = NX_MODE_AES_CBC; + memcpy(csbcpb->cpb.aes_cbc.key, in_key, key_len); + + return 0; +} + +static int cbc_aes_nx_crypt(struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, + unsigned int nbytes, + int enc) +{ + struct nx_crypto_ctx *nx_ctx = crypto_blkcipher_ctx(desc->tfm); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + int rc; + + if (nbytes > nx_ctx->ap->databytelen) + return -EINVAL; + + if (enc) + NX_CPB_FDM(csbcpb) |= NX_FDM_ENDE_ENCRYPT; + else + NX_CPB_FDM(csbcpb) &= ~NX_FDM_ENDE_ENCRYPT; + + rc = nx_build_sg_lists(nx_ctx, desc, dst, src, nbytes, + csbcpb->cpb.aes_cbc.iv); + if (rc) + goto out; + + if (!nx_ctx->op.inlen || !nx_ctx->op.outlen) { + rc = -EINVAL; + goto out; + } + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(csbcpb->csb.processed_byte_count, + &(nx_ctx->stats->aes_bytes)); +out: + return rc; +} + +static int cbc_aes_nx_encrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, + unsigned int nbytes) +{ + return cbc_aes_nx_crypt(desc, dst, src, nbytes, 1); +} + +static int cbc_aes_nx_decrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, + unsigned int nbytes) +{ + return cbc_aes_nx_crypt(desc, dst, src, nbytes, 0); +} + +struct crypto_alg nx_cbc_aes_alg = { + .cra_name = "cbc(aes)", + .cra_driver_name = "cbc-aes-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(nx_cbc_aes_alg.cra_list), + .cra_init = nx_crypto_ctx_aes_cbc_init, + .cra_exit = nx_crypto_ctx_exit, + .cra_blkcipher = { + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + .setkey = cbc_aes_nx_set_key, + .encrypt = cbc_aes_nx_encrypt, + .decrypt = cbc_aes_nx_decrypt, + } +}; diff --git a/drivers/crypto/nx/nx-aes-ccm.c b/drivers/crypto/nx/nx-aes-ccm.c new file mode 100644 index 000000000000..7aeac678b9c0 --- /dev/null +++ b/drivers/crypto/nx/nx-aes-ccm.c @@ -0,0 +1,468 @@ +/** + * AES CCM routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <crypto/internal/aead.h> +#include <crypto/aes.h> +#include <crypto/algapi.h> +#include <crypto/scatterwalk.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/crypto.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + + +static int ccm_aes_nx_set_key(struct crypto_aead *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&tfm->base); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + struct nx_csbcpb *csbcpb_aead = nx_ctx->csbcpb_aead; + + nx_ctx_init(nx_ctx, HCOP_FC_AES); + + switch (key_len) { + case AES_KEYSIZE_128: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128); + NX_CPB_SET_KEY_SIZE(csbcpb_aead, NX_KS_AES_128); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_128]; + break; + default: + return -EINVAL; + } + + csbcpb->cpb.hdr.mode = NX_MODE_AES_CCM; + memcpy(csbcpb->cpb.aes_ccm.key, in_key, key_len); + + csbcpb_aead->cpb.hdr.mode = NX_MODE_AES_CCA; + memcpy(csbcpb_aead->cpb.aes_cca.key, in_key, key_len); + + return 0; + +} + +static int ccm4309_aes_nx_set_key(struct crypto_aead *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&tfm->base); + + if (key_len < 3) + return -EINVAL; + + key_len -= 3; + + memcpy(nx_ctx->priv.ccm.nonce, in_key + key_len, 3); + + return ccm_aes_nx_set_key(tfm, in_key, key_len); +} + +static int ccm_aes_nx_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + switch (authsize) { + case 4: + case 6: + case 8: + case 10: + case 12: + case 14: + case 16: + break; + default: + return -EINVAL; + } + + crypto_aead_crt(tfm)->authsize = authsize; + + return 0; +} + +static int ccm4309_aes_nx_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + switch (authsize) { + case 8: + case 12: + case 16: + break; + default: + return -EINVAL; + } + + crypto_aead_crt(tfm)->authsize = authsize; + + return 0; +} + +/* taken from crypto/ccm.c */ +static int set_msg_len(u8 *block, unsigned int msglen, int csize) +{ + __be32 data; + + memset(block, 0, csize); + block += csize; + + if (csize >= 4) + csize = 4; + else if (msglen > (unsigned int)(1 << (8 * csize))) + return -EOVERFLOW; + + data = cpu_to_be32(msglen); + memcpy(block - csize, (u8 *)&data + 4 - csize, csize); + + return 0; +} + +/* taken from crypto/ccm.c */ +static inline int crypto_ccm_check_iv(const u8 *iv) +{ + /* 2 <= L <= 8, so 1 <= L' <= 7. */ + if (1 > iv[0] || iv[0] > 7) + return -EINVAL; + + return 0; +} + +/* based on code from crypto/ccm.c */ +static int generate_b0(u8 *iv, unsigned int assoclen, unsigned int authsize, + unsigned int cryptlen, u8 *b0) +{ + unsigned int l, lp, m = authsize; + int rc; + + memcpy(b0, iv, 16); + + lp = b0[0]; + l = lp + 1; + + /* set m, bits 3-5 */ + *b0 |= (8 * ((m - 2) / 2)); + + /* set adata, bit 6, if associated data is used */ + if (assoclen) + *b0 |= 64; + + rc = set_msg_len(b0 + 16 - l, cryptlen, l); + + return rc; +} + +static int generate_pat(u8 *iv, + struct aead_request *req, + struct nx_crypto_ctx *nx_ctx, + unsigned int authsize, + unsigned int nbytes, + u8 *out) +{ + struct nx_sg *nx_insg = nx_ctx->in_sg; + struct nx_sg *nx_outsg = nx_ctx->out_sg; + unsigned int iauth_len = 0; + struct vio_pfo_op *op = NULL; + u8 tmp[16], *b1 = NULL, *b0 = NULL, *result = NULL; + int rc; + + /* zero the ctr value */ + memset(iv + 15 - iv[0], 0, iv[0] + 1); + + if (!req->assoclen) { + b0 = nx_ctx->csbcpb->cpb.aes_ccm.in_pat_or_b0; + } else if (req->assoclen <= 14) { + /* if associated data is 14 bytes or less, we do 1 GCM + * operation on 2 AES blocks, B0 (stored in the csbcpb) and B1, + * which is fed in through the source buffers here */ + b0 = nx_ctx->csbcpb->cpb.aes_ccm.in_pat_or_b0; + b1 = nx_ctx->priv.ccm.iauth_tag; + iauth_len = req->assoclen; + + nx_insg = nx_build_sg_list(nx_insg, b1, 16, nx_ctx->ap->sglen); + nx_outsg = nx_build_sg_list(nx_outsg, tmp, 16, + nx_ctx->ap->sglen); + + /* inlen should be negative, indicating to phyp that its a + * pointer to an sg list */ + nx_ctx->op.inlen = (nx_ctx->in_sg - nx_insg) * + sizeof(struct nx_sg); + nx_ctx->op.outlen = (nx_ctx->out_sg - nx_outsg) * + sizeof(struct nx_sg); + + NX_CPB_FDM(nx_ctx->csbcpb) |= NX_FDM_ENDE_ENCRYPT; + NX_CPB_FDM(nx_ctx->csbcpb) |= NX_FDM_INTERMEDIATE; + + op = &nx_ctx->op; + result = nx_ctx->csbcpb->cpb.aes_ccm.out_pat_or_mac; + } else if (req->assoclen <= 65280) { + /* if associated data is less than (2^16 - 2^8), we construct + * B1 differently and feed in the associated data to a CCA + * operation */ + b0 = nx_ctx->csbcpb_aead->cpb.aes_cca.b0; + b1 = nx_ctx->csbcpb_aead->cpb.aes_cca.b1; + iauth_len = 14; + + /* remaining assoc data must have scatterlist built for it */ + nx_insg = nx_walk_and_build(nx_insg, nx_ctx->ap->sglen, + req->assoc, iauth_len, + req->assoclen - iauth_len); + nx_ctx->op_aead.inlen = (nx_ctx->in_sg - nx_insg) * + sizeof(struct nx_sg); + + op = &nx_ctx->op_aead; + result = nx_ctx->csbcpb_aead->cpb.aes_cca.out_pat_or_b0; + } else { + /* if associated data is less than (2^32), we construct B1 + * differently yet again and feed in the associated data to a + * CCA operation */ + pr_err("associated data len is %u bytes (returning -EINVAL)\n", + req->assoclen); + rc = -EINVAL; + } + + rc = generate_b0(iv, req->assoclen, authsize, nbytes, b0); + if (rc) + goto done; + + if (b1) { + memset(b1, 0, 16); + *(u16 *)b1 = (u16)req->assoclen; + + scatterwalk_map_and_copy(b1 + 2, req->assoc, 0, + iauth_len, SCATTERWALK_FROM_SG); + + rc = nx_hcall_sync(nx_ctx, op, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto done; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(req->assoclen, &(nx_ctx->stats->aes_bytes)); + + memcpy(out, result, AES_BLOCK_SIZE); + } +done: + return rc; +} + +static int ccm_nx_decrypt(struct aead_request *req, + struct blkcipher_desc *desc) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + unsigned int nbytes = req->cryptlen; + unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req)); + struct nx_ccm_priv *priv = &nx_ctx->priv.ccm; + int rc = -1; + + if (nbytes > nx_ctx->ap->databytelen) + return -EINVAL; + + nbytes -= authsize; + + /* copy out the auth tag to compare with later */ + scatterwalk_map_and_copy(priv->oauth_tag, + req->src, nbytes, authsize, + SCATTERWALK_FROM_SG); + + rc = generate_pat(desc->info, req, nx_ctx, authsize, nbytes, + csbcpb->cpb.aes_ccm.in_pat_or_b0); + if (rc) + goto out; + + rc = nx_build_sg_lists(nx_ctx, desc, req->dst, req->src, nbytes, + csbcpb->cpb.aes_ccm.iv_or_ctr); + if (rc) + goto out; + + NX_CPB_FDM(nx_ctx->csbcpb) &= ~NX_FDM_ENDE_ENCRYPT; + NX_CPB_FDM(nx_ctx->csbcpb) &= ~NX_FDM_INTERMEDIATE; + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(csbcpb->csb.processed_byte_count, + &(nx_ctx->stats->aes_bytes)); + + rc = memcmp(csbcpb->cpb.aes_ccm.out_pat_or_mac, priv->oauth_tag, + authsize) ? -EBADMSG : 0; +out: + return rc; +} + +static int ccm_nx_encrypt(struct aead_request *req, + struct blkcipher_desc *desc) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + unsigned int nbytes = req->cryptlen; + unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req)); + int rc = -1; + + if (nbytes > nx_ctx->ap->databytelen) + return -EINVAL; + + rc = generate_pat(desc->info, req, nx_ctx, authsize, nbytes, + csbcpb->cpb.aes_ccm.in_pat_or_b0); + if (rc) + goto out; + + rc = nx_build_sg_lists(nx_ctx, desc, req->dst, req->src, nbytes, + csbcpb->cpb.aes_ccm.iv_or_ctr); + if (rc) + goto out; + + NX_CPB_FDM(csbcpb) |= NX_FDM_ENDE_ENCRYPT; + NX_CPB_FDM(csbcpb) &= ~NX_FDM_INTERMEDIATE; + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(csbcpb->csb.processed_byte_count, + &(nx_ctx->stats->aes_bytes)); + + /* copy out the auth tag */ + scatterwalk_map_and_copy(csbcpb->cpb.aes_ccm.out_pat_or_mac, + req->dst, nbytes, authsize, + SCATTERWALK_TO_SG); +out: + return rc; +} + +static int ccm4309_aes_nx_encrypt(struct aead_request *req) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); + struct blkcipher_desc desc; + u8 *iv = nx_ctx->priv.ccm.iv; + + iv[0] = 3; + memcpy(iv + 1, nx_ctx->priv.ccm.nonce, 3); + memcpy(iv + 4, req->iv, 8); + + desc.info = iv; + desc.tfm = (struct crypto_blkcipher *)req->base.tfm; + + return ccm_nx_encrypt(req, &desc); +} + +static int ccm_aes_nx_encrypt(struct aead_request *req) +{ + struct blkcipher_desc desc; + int rc; + + desc.info = req->iv; + desc.tfm = (struct crypto_blkcipher *)req->base.tfm; + + rc = crypto_ccm_check_iv(desc.info); + if (rc) + return rc; + + return ccm_nx_encrypt(req, &desc); +} + +static int ccm4309_aes_nx_decrypt(struct aead_request *req) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); + struct blkcipher_desc desc; + u8 *iv = nx_ctx->priv.ccm.iv; + + iv[0] = 3; + memcpy(iv + 1, nx_ctx->priv.ccm.nonce, 3); + memcpy(iv + 4, req->iv, 8); + + desc.info = iv; + desc.tfm = (struct crypto_blkcipher *)req->base.tfm; + + return ccm_nx_decrypt(req, &desc); +} + +static int ccm_aes_nx_decrypt(struct aead_request *req) +{ + struct blkcipher_desc desc; + int rc; + + desc.info = req->iv; + desc.tfm = (struct crypto_blkcipher *)req->base.tfm; + + rc = crypto_ccm_check_iv(desc.info); + if (rc) + return rc; + + return ccm_nx_decrypt(req, &desc); +} + +/* tell the block cipher walk routines that this is a stream cipher by + * setting cra_blocksize to 1. Even using blkcipher_walk_virt_block + * during encrypt/decrypt doesn't solve this problem, because it calls + * blkcipher_walk_done under the covers, which doesn't use walk->blocksize, + * but instead uses this tfm->blocksize. */ +struct crypto_alg nx_ccm_aes_alg = { + .cra_name = "ccm(aes)", + .cra_driver_name = "ccm-aes-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_AEAD | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_type = &crypto_aead_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(nx_ccm_aes_alg.cra_list), + .cra_init = nx_crypto_ctx_aes_ccm_init, + .cra_exit = nx_crypto_ctx_exit, + .cra_aead = { + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = AES_BLOCK_SIZE, + .setkey = ccm_aes_nx_set_key, + .setauthsize = ccm_aes_nx_setauthsize, + .encrypt = ccm_aes_nx_encrypt, + .decrypt = ccm_aes_nx_decrypt, + } +}; + +struct crypto_alg nx_ccm4309_aes_alg = { + .cra_name = "rfc4309(ccm(aes))", + .cra_driver_name = "rfc4309-ccm-aes-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_AEAD | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_type = &crypto_nivaead_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(nx_ccm4309_aes_alg.cra_list), + .cra_init = nx_crypto_ctx_aes_ccm_init, + .cra_exit = nx_crypto_ctx_exit, + .cra_aead = { + .ivsize = 8, + .maxauthsize = AES_BLOCK_SIZE, + .setkey = ccm4309_aes_nx_set_key, + .setauthsize = ccm4309_aes_nx_setauthsize, + .encrypt = ccm4309_aes_nx_encrypt, + .decrypt = ccm4309_aes_nx_decrypt, + .geniv = "seqiv", + } +}; diff --git a/drivers/crypto/nx/nx-aes-ctr.c b/drivers/crypto/nx/nx-aes-ctr.c new file mode 100644 index 000000000000..52d4eb05e8f7 --- /dev/null +++ b/drivers/crypto/nx/nx-aes-ctr.c @@ -0,0 +1,178 @@ +/** + * AES CTR routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2011-2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <crypto/aes.h> +#include <crypto/ctr.h> +#include <crypto/algapi.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/crypto.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + + +static int ctr_aes_nx_set_key(struct crypto_tfm *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + + nx_ctx_init(nx_ctx, HCOP_FC_AES); + + switch (key_len) { + case AES_KEYSIZE_128: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_128]; + break; + case AES_KEYSIZE_192: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_192); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_192]; + break; + case AES_KEYSIZE_256: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_256); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_256]; + break; + default: + return -EINVAL; + } + + csbcpb->cpb.hdr.mode = NX_MODE_AES_CTR; + memcpy(csbcpb->cpb.aes_ctr.key, in_key, key_len); + + return 0; +} + +static int ctr3686_aes_nx_set_key(struct crypto_tfm *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm); + + if (key_len < CTR_RFC3686_NONCE_SIZE) + return -EINVAL; + + memcpy(nx_ctx->priv.ctr.iv, + in_key + key_len - CTR_RFC3686_NONCE_SIZE, + CTR_RFC3686_NONCE_SIZE); + + key_len -= CTR_RFC3686_NONCE_SIZE; + + return ctr_aes_nx_set_key(tfm, in_key, key_len); +} + +static int ctr_aes_nx_crypt(struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, + unsigned int nbytes) +{ + struct nx_crypto_ctx *nx_ctx = crypto_blkcipher_ctx(desc->tfm); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + int rc; + + if (nbytes > nx_ctx->ap->databytelen) + return -EINVAL; + + rc = nx_build_sg_lists(nx_ctx, desc, dst, src, nbytes, + csbcpb->cpb.aes_ctr.iv); + if (rc) + goto out; + + if (!nx_ctx->op.inlen || !nx_ctx->op.outlen) { + rc = -EINVAL; + goto out; + } + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(csbcpb->csb.processed_byte_count, + &(nx_ctx->stats->aes_bytes)); +out: + return rc; +} + +static int ctr3686_aes_nx_crypt(struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, + unsigned int nbytes) +{ + struct nx_crypto_ctx *nx_ctx = crypto_blkcipher_ctx(desc->tfm); + u8 *iv = nx_ctx->priv.ctr.iv; + + memcpy(iv + CTR_RFC3686_NONCE_SIZE, + desc->info, CTR_RFC3686_IV_SIZE); + iv[15] = 1; + + desc->info = nx_ctx->priv.ctr.iv; + + return ctr_aes_nx_crypt(desc, dst, src, nbytes); +} + +struct crypto_alg nx_ctr_aes_alg = { + .cra_name = "ctr(aes)", + .cra_driver_name = "ctr-aes-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(nx_ctr_aes_alg.cra_list), + .cra_init = nx_crypto_ctx_aes_ctr_init, + .cra_exit = nx_crypto_ctx_exit, + .cra_blkcipher = { + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + .setkey = ctr_aes_nx_set_key, + .encrypt = ctr_aes_nx_crypt, + .decrypt = ctr_aes_nx_crypt, + } +}; + +struct crypto_alg nx_ctr3686_aes_alg = { + .cra_name = "rfc3686(ctr(aes))", + .cra_driver_name = "rfc3686-ctr-aes-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(nx_ctr3686_aes_alg.cra_list), + .cra_init = nx_crypto_ctx_aes_ctr_init, + .cra_exit = nx_crypto_ctx_exit, + .cra_blkcipher = { + .min_keysize = AES_MIN_KEY_SIZE + CTR_RFC3686_NONCE_SIZE, + .max_keysize = AES_MAX_KEY_SIZE + CTR_RFC3686_NONCE_SIZE, + .ivsize = CTR_RFC3686_IV_SIZE, + .geniv = "seqiv", + .setkey = ctr3686_aes_nx_set_key, + .encrypt = ctr3686_aes_nx_crypt, + .decrypt = ctr3686_aes_nx_crypt, + } +}; diff --git a/drivers/crypto/nx/nx-aes-ecb.c b/drivers/crypto/nx/nx-aes-ecb.c new file mode 100644 index 000000000000..7b77bc2d1df4 --- /dev/null +++ b/drivers/crypto/nx/nx-aes-ecb.c @@ -0,0 +1,139 @@ +/** + * AES ECB routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2011-2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <crypto/aes.h> +#include <crypto/algapi.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/crypto.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + + +static int ecb_aes_nx_set_key(struct crypto_tfm *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm); + struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; + + nx_ctx_init(nx_ctx, HCOP_FC_AES); + + switch (key_len) { + case AES_KEYSIZE_128: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_128]; + break; + case AES_KEYSIZE_192: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_192); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_192]; + break; + case AES_KEYSIZE_256: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_256); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_256]; + break; + default: + return -EINVAL; + } + + csbcpb->cpb.hdr.mode = NX_MODE_AES_ECB; + memcpy(csbcpb->cpb.aes_ecb.key, in_key, key_len); + + return 0; +} + +static int ecb_aes_nx_crypt(struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, + unsigned int nbytes, + int enc) +{ + struct nx_crypto_ctx *nx_ctx = crypto_blkcipher_ctx(desc->tfm); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + int rc; + + if (nbytes > nx_ctx->ap->databytelen) + return -EINVAL; + + if (enc) + NX_CPB_FDM(csbcpb) |= NX_FDM_ENDE_ENCRYPT; + else + NX_CPB_FDM(csbcpb) &= ~NX_FDM_ENDE_ENCRYPT; + + rc = nx_build_sg_lists(nx_ctx, desc, dst, src, nbytes, NULL); + if (rc) + goto out; + + if (!nx_ctx->op.inlen || !nx_ctx->op.outlen) { + rc = -EINVAL; + goto out; + } + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(csbcpb->csb.processed_byte_count, + &(nx_ctx->stats->aes_bytes)); +out: + return rc; +} + +static int ecb_aes_nx_encrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, + unsigned int nbytes) +{ + return ecb_aes_nx_crypt(desc, dst, src, nbytes, 1); +} + +static int ecb_aes_nx_decrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, + unsigned int nbytes) +{ + return ecb_aes_nx_crypt(desc, dst, src, nbytes, 0); +} + +struct crypto_alg nx_ecb_aes_alg = { + .cra_name = "ecb(aes)", + .cra_driver_name = "ecb-aes-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(nx_ecb_aes_alg.cra_list), + .cra_init = nx_crypto_ctx_aes_ecb_init, + .cra_exit = nx_crypto_ctx_exit, + .cra_blkcipher = { + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .setkey = ecb_aes_nx_set_key, + .encrypt = ecb_aes_nx_encrypt, + .decrypt = ecb_aes_nx_decrypt, + } +}; diff --git a/drivers/crypto/nx/nx-aes-gcm.c b/drivers/crypto/nx/nx-aes-gcm.c new file mode 100644 index 000000000000..9ab1c7341dac --- /dev/null +++ b/drivers/crypto/nx/nx-aes-gcm.c @@ -0,0 +1,353 @@ +/** + * AES GCM routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <crypto/internal/aead.h> +#include <crypto/aes.h> +#include <crypto/algapi.h> +#include <crypto/scatterwalk.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/crypto.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + + +static int gcm_aes_nx_set_key(struct crypto_aead *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&tfm->base); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + struct nx_csbcpb *csbcpb_aead = nx_ctx->csbcpb_aead; + + nx_ctx_init(nx_ctx, HCOP_FC_AES); + + switch (key_len) { + case AES_KEYSIZE_128: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128); + NX_CPB_SET_KEY_SIZE(csbcpb_aead, NX_KS_AES_128); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_128]; + break; + case AES_KEYSIZE_192: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_192); + NX_CPB_SET_KEY_SIZE(csbcpb_aead, NX_KS_AES_192); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_192]; + break; + case AES_KEYSIZE_256: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_256); + NX_CPB_SET_KEY_SIZE(csbcpb_aead, NX_KS_AES_256); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_256]; + break; + default: + return -EINVAL; + } + + csbcpb->cpb.hdr.mode = NX_MODE_AES_GCM; + memcpy(csbcpb->cpb.aes_gcm.key, in_key, key_len); + + csbcpb_aead->cpb.hdr.mode = NX_MODE_AES_GCA; + memcpy(csbcpb_aead->cpb.aes_gca.key, in_key, key_len); + + return 0; +} + +static int gcm4106_aes_nx_set_key(struct crypto_aead *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&tfm->base); + char *nonce = nx_ctx->priv.gcm.nonce; + int rc; + + if (key_len < 4) + return -EINVAL; + + key_len -= 4; + + rc = gcm_aes_nx_set_key(tfm, in_key, key_len); + if (rc) + goto out; + + memcpy(nonce, in_key + key_len, 4); +out: + return rc; +} + +static int gcm_aes_nx_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + if (authsize > crypto_aead_alg(tfm)->maxauthsize) + return -EINVAL; + + crypto_aead_crt(tfm)->authsize = authsize; + + return 0; +} + +static int gcm4106_aes_nx_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + switch (authsize) { + case 8: + case 12: + case 16: + break; + default: + return -EINVAL; + } + + crypto_aead_crt(tfm)->authsize = authsize; + + return 0; +} + +static int nx_gca(struct nx_crypto_ctx *nx_ctx, + struct aead_request *req, + u8 *out) +{ + struct nx_csbcpb *csbcpb_aead = nx_ctx->csbcpb_aead; + int rc = -EINVAL; + struct scatter_walk walk; + struct nx_sg *nx_sg = nx_ctx->in_sg; + + if (req->assoclen > nx_ctx->ap->databytelen) + goto out; + + if (req->assoclen <= AES_BLOCK_SIZE) { + scatterwalk_start(&walk, req->assoc); + scatterwalk_copychunks(out, &walk, req->assoclen, + SCATTERWALK_FROM_SG); + scatterwalk_done(&walk, SCATTERWALK_FROM_SG, 0); + + rc = 0; + goto out; + } + + nx_sg = nx_walk_and_build(nx_sg, nx_ctx->ap->sglen, req->assoc, 0, + req->assoclen); + nx_ctx->op_aead.inlen = (nx_ctx->in_sg - nx_sg) * sizeof(struct nx_sg); + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op_aead, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(req->assoclen, &(nx_ctx->stats->aes_bytes)); + + memcpy(out, csbcpb_aead->cpb.aes_gca.out_pat, AES_BLOCK_SIZE); +out: + return rc; +} + +static int gcm_aes_nx_crypt(struct aead_request *req, int enc) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + struct blkcipher_desc desc; + unsigned int nbytes = req->cryptlen; + int rc = -EINVAL; + + if (nbytes > nx_ctx->ap->databytelen) + goto out; + + desc.info = nx_ctx->priv.gcm.iv; + /* initialize the counter */ + *(u32 *)(desc.info + NX_GCM_CTR_OFFSET) = 1; + + /* For scenarios where the input message is zero length, AES CTR mode + * may be used. Set the source data to be a single block (16B) of all + * zeros, and set the input IV value to be the same as the GMAC IV + * value. - nx_wb 4.8.1.3 */ + if (nbytes == 0) { + char src[AES_BLOCK_SIZE] = {}; + struct scatterlist sg; + + desc.tfm = crypto_alloc_blkcipher("ctr(aes)", 0, 0); + if (IS_ERR(desc.tfm)) { + rc = -ENOMEM; + goto out; + } + + crypto_blkcipher_setkey(desc.tfm, csbcpb->cpb.aes_gcm.key, + NX_CPB_KEY_SIZE(csbcpb) == NX_KS_AES_128 ? 16 : + NX_CPB_KEY_SIZE(csbcpb) == NX_KS_AES_192 ? 24 : 32); + + sg_init_one(&sg, src, AES_BLOCK_SIZE); + if (enc) + crypto_blkcipher_encrypt_iv(&desc, req->dst, &sg, + AES_BLOCK_SIZE); + else + crypto_blkcipher_decrypt_iv(&desc, req->dst, &sg, + AES_BLOCK_SIZE); + crypto_free_blkcipher(desc.tfm); + + rc = 0; + goto out; + } + + desc.tfm = (struct crypto_blkcipher *)req->base.tfm; + + csbcpb->cpb.aes_gcm.bit_length_aad = req->assoclen * 8; + + if (req->assoclen) { + rc = nx_gca(nx_ctx, req, csbcpb->cpb.aes_gcm.in_pat_or_aad); + if (rc) + goto out; + } + + if (enc) + NX_CPB_FDM(csbcpb) |= NX_FDM_ENDE_ENCRYPT; + else + nbytes -= AES_BLOCK_SIZE; + + csbcpb->cpb.aes_gcm.bit_length_data = nbytes * 8; + + rc = nx_build_sg_lists(nx_ctx, &desc, req->dst, req->src, nbytes, + csbcpb->cpb.aes_gcm.iv_or_cnt); + if (rc) + goto out; + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(csbcpb->csb.processed_byte_count, + &(nx_ctx->stats->aes_bytes)); + + if (enc) { + /* copy out the auth tag */ + scatterwalk_map_and_copy(csbcpb->cpb.aes_gcm.out_pat_or_mac, + req->dst, nbytes, + crypto_aead_authsize(crypto_aead_reqtfm(req)), + SCATTERWALK_TO_SG); + } else if (req->assoclen) { + u8 *itag = nx_ctx->priv.gcm.iauth_tag; + u8 *otag = csbcpb->cpb.aes_gcm.out_pat_or_mac; + + scatterwalk_map_and_copy(itag, req->dst, nbytes, + crypto_aead_authsize(crypto_aead_reqtfm(req)), + SCATTERWALK_FROM_SG); + rc = memcmp(itag, otag, + crypto_aead_authsize(crypto_aead_reqtfm(req))) ? + -EBADMSG : 0; + } +out: + return rc; +} + +static int gcm_aes_nx_encrypt(struct aead_request *req) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); + char *iv = nx_ctx->priv.gcm.iv; + + memcpy(iv, req->iv, 12); + + return gcm_aes_nx_crypt(req, 1); +} + +static int gcm_aes_nx_decrypt(struct aead_request *req) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); + char *iv = nx_ctx->priv.gcm.iv; + + memcpy(iv, req->iv, 12); + + return gcm_aes_nx_crypt(req, 0); +} + +static int gcm4106_aes_nx_encrypt(struct aead_request *req) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); + char *iv = nx_ctx->priv.gcm.iv; + char *nonce = nx_ctx->priv.gcm.nonce; + + memcpy(iv, nonce, NX_GCM4106_NONCE_LEN); + memcpy(iv + NX_GCM4106_NONCE_LEN, req->iv, 8); + + return gcm_aes_nx_crypt(req, 1); +} + +static int gcm4106_aes_nx_decrypt(struct aead_request *req) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); + char *iv = nx_ctx->priv.gcm.iv; + char *nonce = nx_ctx->priv.gcm.nonce; + + memcpy(iv, nonce, NX_GCM4106_NONCE_LEN); + memcpy(iv + NX_GCM4106_NONCE_LEN, req->iv, 8); + + return gcm_aes_nx_crypt(req, 0); +} + +/* tell the block cipher walk routines that this is a stream cipher by + * setting cra_blocksize to 1. Even using blkcipher_walk_virt_block + * during encrypt/decrypt doesn't solve this problem, because it calls + * blkcipher_walk_done under the covers, which doesn't use walk->blocksize, + * but instead uses this tfm->blocksize. */ +struct crypto_alg nx_gcm_aes_alg = { + .cra_name = "gcm(aes)", + .cra_driver_name = "gcm-aes-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_AEAD, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_type = &crypto_aead_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(nx_gcm_aes_alg.cra_list), + .cra_init = nx_crypto_ctx_aes_gcm_init, + .cra_exit = nx_crypto_ctx_exit, + .cra_aead = { + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = AES_BLOCK_SIZE, + .setkey = gcm_aes_nx_set_key, + .setauthsize = gcm_aes_nx_setauthsize, + .encrypt = gcm_aes_nx_encrypt, + .decrypt = gcm_aes_nx_decrypt, + } +}; + +struct crypto_alg nx_gcm4106_aes_alg = { + .cra_name = "rfc4106(gcm(aes))", + .cra_driver_name = "rfc4106-gcm-aes-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_AEAD, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_type = &crypto_nivaead_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(nx_gcm4106_aes_alg.cra_list), + .cra_init = nx_crypto_ctx_aes_gcm_init, + .cra_exit = nx_crypto_ctx_exit, + .cra_aead = { + .ivsize = 8, + .maxauthsize = AES_BLOCK_SIZE, + .geniv = "seqiv", + .setkey = gcm4106_aes_nx_set_key, + .setauthsize = gcm4106_aes_nx_setauthsize, + .encrypt = gcm4106_aes_nx_encrypt, + .decrypt = gcm4106_aes_nx_decrypt, + } +}; diff --git a/drivers/crypto/nx/nx-aes-xcbc.c b/drivers/crypto/nx/nx-aes-xcbc.c new file mode 100644 index 000000000000..93923e4628c0 --- /dev/null +++ b/drivers/crypto/nx/nx-aes-xcbc.c @@ -0,0 +1,236 @@ +/** + * AES XCBC routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2011-2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <crypto/internal/hash.h> +#include <crypto/aes.h> +#include <crypto/algapi.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/crypto.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + + +struct xcbc_state { + u8 state[AES_BLOCK_SIZE]; + unsigned int count; + u8 buffer[AES_BLOCK_SIZE]; +}; + +static int nx_xcbc_set_key(struct crypto_shash *desc, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_shash_ctx(desc); + + switch (key_len) { + case AES_KEYSIZE_128: + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_128]; + break; + default: + return -EINVAL; + } + + memcpy(nx_ctx->priv.xcbc.key, in_key, key_len); + + return 0; +} + +static int nx_xcbc_init(struct shash_desc *desc) +{ + struct xcbc_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + struct nx_sg *out_sg; + + nx_ctx_init(nx_ctx, HCOP_FC_AES); + + memset(sctx, 0, sizeof *sctx); + + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128); + csbcpb->cpb.hdr.mode = NX_MODE_AES_XCBC_MAC; + + memcpy(csbcpb->cpb.aes_xcbc.key, nx_ctx->priv.xcbc.key, AES_BLOCK_SIZE); + memset(nx_ctx->priv.xcbc.key, 0, sizeof *nx_ctx->priv.xcbc.key); + + out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state, + AES_BLOCK_SIZE, nx_ctx->ap->sglen); + nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg); + + return 0; +} + +static int nx_xcbc_update(struct shash_desc *desc, + const u8 *data, + unsigned int len) +{ + struct xcbc_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + struct nx_sg *in_sg; + u32 to_process, leftover; + int rc = 0; + + if (NX_CPB_FDM(csbcpb) & NX_FDM_CONTINUATION) { + /* we've hit the nx chip previously and we're updating again, + * so copy over the partial digest */ + memcpy(csbcpb->cpb.aes_xcbc.cv, + csbcpb->cpb.aes_xcbc.out_cv_mac, AES_BLOCK_SIZE); + } + + /* 2 cases for total data len: + * 1: <= AES_BLOCK_SIZE: copy into state, return 0 + * 2: > AES_BLOCK_SIZE: process X blocks, copy in leftover + */ + if (len + sctx->count <= AES_BLOCK_SIZE) { + memcpy(sctx->buffer + sctx->count, data, len); + sctx->count += len; + goto out; + } + + /* to_process: the AES_BLOCK_SIZE data chunk to process in this + * update */ + to_process = (sctx->count + len) & ~(AES_BLOCK_SIZE - 1); + leftover = (sctx->count + len) & (AES_BLOCK_SIZE - 1); + + /* the hardware will not accept a 0 byte operation for this algorithm + * and the operation MUST be finalized to be correct. So if we happen + * to get an update that falls on a block sized boundary, we must + * save off the last block to finalize with later. */ + if (!leftover) { + to_process -= AES_BLOCK_SIZE; + leftover = AES_BLOCK_SIZE; + } + + if (sctx->count) { + in_sg = nx_build_sg_list(nx_ctx->in_sg, sctx->buffer, + sctx->count, nx_ctx->ap->sglen); + in_sg = nx_build_sg_list(in_sg, (u8 *)data, + to_process - sctx->count, + nx_ctx->ap->sglen); + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * + sizeof(struct nx_sg); + } else { + in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)data, to_process, + nx_ctx->ap->sglen); + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * + sizeof(struct nx_sg); + } + + NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE; + + if (!nx_ctx->op.inlen || !nx_ctx->op.outlen) { + rc = -EINVAL; + goto out; + } + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + + /* copy the leftover back into the state struct */ + memcpy(sctx->buffer, data + len - leftover, leftover); + sctx->count = leftover; + + /* everything after the first update is continuation */ + NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION; +out: + return rc; +} + +static int nx_xcbc_final(struct shash_desc *desc, u8 *out) +{ + struct xcbc_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + struct nx_sg *in_sg, *out_sg; + int rc = 0; + + if (NX_CPB_FDM(csbcpb) & NX_FDM_CONTINUATION) { + /* we've hit the nx chip previously, now we're finalizing, + * so copy over the partial digest */ + memcpy(csbcpb->cpb.aes_xcbc.cv, + csbcpb->cpb.aes_xcbc.out_cv_mac, AES_BLOCK_SIZE); + } else if (sctx->count == 0) { + /* we've never seen an update, so this is a 0 byte op. The + * hardware cannot handle a 0 byte op, so just copy out the + * known 0 byte result. This is cheaper than allocating a + * software context to do a 0 byte op */ + u8 data[] = { 0x75, 0xf0, 0x25, 0x1d, 0x52, 0x8a, 0xc0, 0x1c, + 0x45, 0x73, 0xdf, 0xd5, 0x84, 0xd7, 0x9f, 0x29 }; + memcpy(out, data, sizeof(data)); + goto out; + } + + /* final is represented by continuing the operation and indicating that + * this is not an intermediate operation */ + NX_CPB_FDM(csbcpb) &= ~NX_FDM_INTERMEDIATE; + + in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)sctx->buffer, + sctx->count, nx_ctx->ap->sglen); + out_sg = nx_build_sg_list(nx_ctx->out_sg, out, AES_BLOCK_SIZE, + nx_ctx->ap->sglen); + + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg); + nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg); + + if (!nx_ctx->op.outlen) { + rc = -EINVAL; + goto out; + } + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + + memcpy(out, csbcpb->cpb.aes_xcbc.out_cv_mac, AES_BLOCK_SIZE); +out: + return rc; +} + +struct shash_alg nx_shash_aes_xcbc_alg = { + .digestsize = AES_BLOCK_SIZE, + .init = nx_xcbc_init, + .update = nx_xcbc_update, + .final = nx_xcbc_final, + .setkey = nx_xcbc_set_key, + .descsize = sizeof(struct xcbc_state), + .statesize = sizeof(struct xcbc_state), + .base = { + .cra_name = "xcbc(aes)", + .cra_driver_name = "xcbc-aes-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_module = THIS_MODULE, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_init = nx_crypto_ctx_aes_xcbc_init, + .cra_exit = nx_crypto_ctx_exit, + } +}; diff --git a/drivers/crypto/nx/nx-sha256.c b/drivers/crypto/nx/nx-sha256.c new file mode 100644 index 000000000000..9767315f8c0b --- /dev/null +++ b/drivers/crypto/nx/nx-sha256.c @@ -0,0 +1,246 @@ +/** + * SHA-256 routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2011-2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <crypto/internal/hash.h> +#include <crypto/sha.h> +#include <linux/module.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + + +static int nx_sha256_init(struct shash_desc *desc) +{ + struct sha256_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_sg *out_sg; + + nx_ctx_init(nx_ctx, HCOP_FC_SHA); + + memset(sctx, 0, sizeof *sctx); + + nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA256]; + + NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA256); + out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state, + SHA256_DIGEST_SIZE, nx_ctx->ap->sglen); + nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg); + + return 0; +} + +static int nx_sha256_update(struct shash_desc *desc, const u8 *data, + unsigned int len) +{ + struct sha256_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; + struct nx_sg *in_sg; + u64 to_process, leftover; + int rc = 0; + + if (NX_CPB_FDM(csbcpb) & NX_FDM_CONTINUATION) { + /* we've hit the nx chip previously and we're updating again, + * so copy over the partial digest */ + memcpy(csbcpb->cpb.sha256.input_partial_digest, + csbcpb->cpb.sha256.message_digest, SHA256_DIGEST_SIZE); + } + + /* 2 cases for total data len: + * 1: <= SHA256_BLOCK_SIZE: copy into state, return 0 + * 2: > SHA256_BLOCK_SIZE: process X blocks, copy in leftover + */ + if (len + sctx->count <= SHA256_BLOCK_SIZE) { + memcpy(sctx->buf + sctx->count, data, len); + sctx->count += len; + goto out; + } + + /* to_process: the SHA256_BLOCK_SIZE data chunk to process in this + * update */ + to_process = (sctx->count + len) & ~(SHA256_BLOCK_SIZE - 1); + leftover = (sctx->count + len) & (SHA256_BLOCK_SIZE - 1); + + if (sctx->count) { + in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)sctx->buf, + sctx->count, nx_ctx->ap->sglen); + in_sg = nx_build_sg_list(in_sg, (u8 *)data, + to_process - sctx->count, + nx_ctx->ap->sglen); + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * + sizeof(struct nx_sg); + } else { + in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)data, + to_process, nx_ctx->ap->sglen); + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * + sizeof(struct nx_sg); + } + + NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE; + + if (!nx_ctx->op.inlen || !nx_ctx->op.outlen) { + rc = -EINVAL; + goto out; + } + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->sha256_ops)); + + /* copy the leftover back into the state struct */ + memcpy(sctx->buf, data + len - leftover, leftover); + sctx->count = leftover; + + csbcpb->cpb.sha256.message_bit_length += (u64) + (csbcpb->cpb.sha256.spbc * 8); + + /* everything after the first update is continuation */ + NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION; +out: + return rc; +} + +static int nx_sha256_final(struct shash_desc *desc, u8 *out) +{ + struct sha256_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; + struct nx_sg *in_sg, *out_sg; + int rc; + + if (NX_CPB_FDM(csbcpb) & NX_FDM_CONTINUATION) { + /* we've hit the nx chip previously, now we're finalizing, + * so copy over the partial digest */ + memcpy(csbcpb->cpb.sha256.input_partial_digest, + csbcpb->cpb.sha256.message_digest, SHA256_DIGEST_SIZE); + } + + /* final is represented by continuing the operation and indicating that + * this is not an intermediate operation */ + NX_CPB_FDM(csbcpb) &= ~NX_FDM_INTERMEDIATE; + + csbcpb->cpb.sha256.message_bit_length += (u64)(sctx->count * 8); + + in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)sctx->buf, + sctx->count, nx_ctx->ap->sglen); + out_sg = nx_build_sg_list(nx_ctx->out_sg, out, SHA256_DIGEST_SIZE, + nx_ctx->ap->sglen); + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg); + nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg); + + if (!nx_ctx->op.outlen) { + rc = -EINVAL; + goto out; + } + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->sha256_ops)); + + atomic64_add(csbcpb->cpb.sha256.message_bit_length, + &(nx_ctx->stats->sha256_bytes)); + memcpy(out, csbcpb->cpb.sha256.message_digest, SHA256_DIGEST_SIZE); +out: + return rc; +} + +static int nx_sha256_export(struct shash_desc *desc, void *out) +{ + struct sha256_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; + struct sha256_state *octx = out; + + octx->count = sctx->count + + (csbcpb->cpb.sha256.message_bit_length / 8); + memcpy(octx->buf, sctx->buf, sizeof(octx->buf)); + + /* if no data has been processed yet, we need to export SHA256's + * initial data, in case this context gets imported into a software + * context */ + if (csbcpb->cpb.sha256.message_bit_length) + memcpy(octx->state, csbcpb->cpb.sha256.message_digest, + SHA256_DIGEST_SIZE); + else { + octx->state[0] = SHA256_H0; + octx->state[1] = SHA256_H1; + octx->state[2] = SHA256_H2; + octx->state[3] = SHA256_H3; + octx->state[4] = SHA256_H4; + octx->state[5] = SHA256_H5; + octx->state[6] = SHA256_H6; + octx->state[7] = SHA256_H7; + } + + return 0; +} + +static int nx_sha256_import(struct shash_desc *desc, const void *in) +{ + struct sha256_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; + const struct sha256_state *ictx = in; + + memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf)); + + sctx->count = ictx->count & 0x3f; + csbcpb->cpb.sha256.message_bit_length = (ictx->count & ~0x3f) * 8; + + if (csbcpb->cpb.sha256.message_bit_length) { + memcpy(csbcpb->cpb.sha256.message_digest, ictx->state, + SHA256_DIGEST_SIZE); + + NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION; + NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE; + } + + return 0; +} + +struct shash_alg nx_shash_sha256_alg = { + .digestsize = SHA256_DIGEST_SIZE, + .init = nx_sha256_init, + .update = nx_sha256_update, + .final = nx_sha256_final, + .export = nx_sha256_export, + .import = nx_sha256_import, + .descsize = sizeof(struct sha256_state), + .statesize = sizeof(struct sha256_state), + .base = { + .cra_name = "sha256", + .cra_driver_name = "sha256-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = SHA256_BLOCK_SIZE, + .cra_module = THIS_MODULE, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_init = nx_crypto_ctx_sha_init, + .cra_exit = nx_crypto_ctx_exit, + } +}; diff --git a/drivers/crypto/nx/nx-sha512.c b/drivers/crypto/nx/nx-sha512.c new file mode 100644 index 000000000000..3177b8c3d5f1 --- /dev/null +++ b/drivers/crypto/nx/nx-sha512.c @@ -0,0 +1,265 @@ +/** + * SHA-512 routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2011-2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <crypto/internal/hash.h> +#include <crypto/sha.h> +#include <linux/module.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + + +static int nx_sha512_init(struct shash_desc *desc) +{ + struct sha512_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_sg *out_sg; + + nx_ctx_init(nx_ctx, HCOP_FC_SHA); + + memset(sctx, 0, sizeof *sctx); + + nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA512]; + + NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA512); + out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state, + SHA512_DIGEST_SIZE, nx_ctx->ap->sglen); + nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg); + + return 0; +} + +static int nx_sha512_update(struct shash_desc *desc, const u8 *data, + unsigned int len) +{ + struct sha512_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; + struct nx_sg *in_sg; + u64 to_process, leftover, spbc_bits; + int rc = 0; + + if (NX_CPB_FDM(csbcpb) & NX_FDM_CONTINUATION) { + /* we've hit the nx chip previously and we're updating again, + * so copy over the partial digest */ + memcpy(csbcpb->cpb.sha512.input_partial_digest, + csbcpb->cpb.sha512.message_digest, SHA512_DIGEST_SIZE); + } + + /* 2 cases for total data len: + * 1: <= SHA512_BLOCK_SIZE: copy into state, return 0 + * 2: > SHA512_BLOCK_SIZE: process X blocks, copy in leftover + */ + if ((u64)len + sctx->count[0] <= SHA512_BLOCK_SIZE) { + memcpy(sctx->buf + sctx->count[0], data, len); + sctx->count[0] += len; + goto out; + } + + /* to_process: the SHA512_BLOCK_SIZE data chunk to process in this + * update */ + to_process = (sctx->count[0] + len) & ~(SHA512_BLOCK_SIZE - 1); + leftover = (sctx->count[0] + len) & (SHA512_BLOCK_SIZE - 1); + + if (sctx->count[0]) { + in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)sctx->buf, + sctx->count[0], nx_ctx->ap->sglen); + in_sg = nx_build_sg_list(in_sg, (u8 *)data, + to_process - sctx->count[0], + nx_ctx->ap->sglen); + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * + sizeof(struct nx_sg); + } else { + in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)data, + to_process, nx_ctx->ap->sglen); + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * + sizeof(struct nx_sg); + } + + NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE; + + if (!nx_ctx->op.inlen || !nx_ctx->op.outlen) { + rc = -EINVAL; + goto out; + } + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->sha512_ops)); + + /* copy the leftover back into the state struct */ + memcpy(sctx->buf, data + len - leftover, leftover); + sctx->count[0] = leftover; + + spbc_bits = csbcpb->cpb.sha512.spbc * 8; + csbcpb->cpb.sha512.message_bit_length_lo += spbc_bits; + if (csbcpb->cpb.sha512.message_bit_length_lo < spbc_bits) + csbcpb->cpb.sha512.message_bit_length_hi++; + + /* everything after the first update is continuation */ + NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION; +out: + return rc; +} + +static int nx_sha512_final(struct shash_desc *desc, u8 *out) +{ + struct sha512_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; + struct nx_sg *in_sg, *out_sg; + u64 count0; + int rc; + + if (NX_CPB_FDM(csbcpb) & NX_FDM_CONTINUATION) { + /* we've hit the nx chip previously, now we're finalizing, + * so copy over the partial digest */ + memcpy(csbcpb->cpb.sha512.input_partial_digest, + csbcpb->cpb.sha512.message_digest, SHA512_DIGEST_SIZE); + } + + /* final is represented by continuing the operation and indicating that + * this is not an intermediate operation */ + NX_CPB_FDM(csbcpb) &= ~NX_FDM_INTERMEDIATE; + + count0 = sctx->count[0] * 8; + + csbcpb->cpb.sha512.message_bit_length_lo += count0; + if (csbcpb->cpb.sha512.message_bit_length_lo < count0) + csbcpb->cpb.sha512.message_bit_length_hi++; + + in_sg = nx_build_sg_list(nx_ctx->in_sg, sctx->buf, sctx->count[0], + nx_ctx->ap->sglen); + out_sg = nx_build_sg_list(nx_ctx->out_sg, out, SHA512_DIGEST_SIZE, + nx_ctx->ap->sglen); + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg); + nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg); + + if (!nx_ctx->op.outlen) { + rc = -EINVAL; + goto out; + } + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + atomic_inc(&(nx_ctx->stats->sha512_ops)); + atomic64_add(csbcpb->cpb.sha512.message_bit_length_lo, + &(nx_ctx->stats->sha512_bytes)); + + memcpy(out, csbcpb->cpb.sha512.message_digest, SHA512_DIGEST_SIZE); +out: + return rc; +} + +static int nx_sha512_export(struct shash_desc *desc, void *out) +{ + struct sha512_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; + struct sha512_state *octx = out; + + /* move message_bit_length (128 bits) into count and convert its value + * to bytes */ + octx->count[0] = csbcpb->cpb.sha512.message_bit_length_lo >> 3 | + ((csbcpb->cpb.sha512.message_bit_length_hi & 7) << 61); + octx->count[1] = csbcpb->cpb.sha512.message_bit_length_hi >> 3; + + octx->count[0] += sctx->count[0]; + if (octx->count[0] < sctx->count[0]) + octx->count[1]++; + + memcpy(octx->buf, sctx->buf, sizeof(octx->buf)); + + /* if no data has been processed yet, we need to export SHA512's + * initial data, in case this context gets imported into a software + * context */ + if (csbcpb->cpb.sha512.message_bit_length_hi || + csbcpb->cpb.sha512.message_bit_length_lo) + memcpy(octx->state, csbcpb->cpb.sha512.message_digest, + SHA512_DIGEST_SIZE); + else { + octx->state[0] = SHA512_H0; + octx->state[1] = SHA512_H1; + octx->state[2] = SHA512_H2; + octx->state[3] = SHA512_H3; + octx->state[4] = SHA512_H4; + octx->state[5] = SHA512_H5; + octx->state[6] = SHA512_H6; + octx->state[7] = SHA512_H7; + } + + return 0; +} + +static int nx_sha512_import(struct shash_desc *desc, const void *in) +{ + struct sha512_state *sctx = shash_desc_ctx(desc); + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); + struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; + const struct sha512_state *ictx = in; + + memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf)); + sctx->count[0] = ictx->count[0] & 0x3f; + csbcpb->cpb.sha512.message_bit_length_lo = (ictx->count[0] & ~0x3f) + << 3; + csbcpb->cpb.sha512.message_bit_length_hi = ictx->count[1] << 3 | + ictx->count[0] >> 61; + + if (csbcpb->cpb.sha512.message_bit_length_hi || + csbcpb->cpb.sha512.message_bit_length_lo) { + memcpy(csbcpb->cpb.sha512.message_digest, ictx->state, + SHA512_DIGEST_SIZE); + + NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION; + NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE; + } + + return 0; +} + +struct shash_alg nx_shash_sha512_alg = { + .digestsize = SHA512_DIGEST_SIZE, + .init = nx_sha512_init, + .update = nx_sha512_update, + .final = nx_sha512_final, + .export = nx_sha512_export, + .import = nx_sha512_import, + .descsize = sizeof(struct sha512_state), + .statesize = sizeof(struct sha512_state), + .base = { + .cra_name = "sha512", + .cra_driver_name = "sha512-nx", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = SHA512_BLOCK_SIZE, + .cra_module = THIS_MODULE, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_init = nx_crypto_ctx_sha_init, + .cra_exit = nx_crypto_ctx_exit, + } +}; diff --git a/drivers/crypto/nx/nx.c b/drivers/crypto/nx/nx.c new file mode 100644 index 000000000000..d7f179cc2e98 --- /dev/null +++ b/drivers/crypto/nx/nx.c @@ -0,0 +1,716 @@ +/** + * Routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2011-2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <crypto/internal/hash.h> +#include <crypto/hash.h> +#include <crypto/aes.h> +#include <crypto/sha.h> +#include <crypto/algapi.h> +#include <crypto/scatterwalk.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/types.h> +#include <linux/mm.h> +#include <linux/crypto.h> +#include <linux/scatterlist.h> +#include <linux/device.h> +#include <linux/of.h> +#include <asm/pSeries_reconfig.h> +#include <asm/abs_addr.h> +#include <asm/hvcall.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + + +/** + * nx_hcall_sync - make an H_COP_OP hcall for the passed in op structure + * + * @nx_ctx: the crypto context handle + * @op: PFO operation struct to pass in + * @may_sleep: flag indicating the request can sleep + * + * Make the hcall, retrying while the hardware is busy. If we cannot yield + * the thread, limit the number of retries to 10 here. + */ +int nx_hcall_sync(struct nx_crypto_ctx *nx_ctx, + struct vio_pfo_op *op, + u32 may_sleep) +{ + int rc, retries = 10; + struct vio_dev *viodev = nx_driver.viodev; + + atomic_inc(&(nx_ctx->stats->sync_ops)); + + do { + rc = vio_h_cop_sync(viodev, op); + } while ((rc == -EBUSY && !may_sleep && retries--) || + (rc == -EBUSY && may_sleep && cond_resched())); + + if (rc) { + dev_dbg(&viodev->dev, "vio_h_cop_sync failed: rc: %d " + "hcall rc: %ld\n", rc, op->hcall_err); + atomic_inc(&(nx_ctx->stats->errors)); + atomic_set(&(nx_ctx->stats->last_error), op->hcall_err); + atomic_set(&(nx_ctx->stats->last_error_pid), current->pid); + } + + return rc; +} + +/** + * nx_build_sg_list - build an NX scatter list describing a single buffer + * + * @sg_head: pointer to the first scatter list element to build + * @start_addr: pointer to the linear buffer + * @len: length of the data at @start_addr + * @sgmax: the largest number of scatter list elements we're allowed to create + * + * This function will start writing nx_sg elements at @sg_head and keep + * writing them until all of the data from @start_addr is described or + * until sgmax elements have been written. Scatter list elements will be + * created such that none of the elements describes a buffer that crosses a 4K + * boundary. + */ +struct nx_sg *nx_build_sg_list(struct nx_sg *sg_head, + u8 *start_addr, + unsigned int len, + u32 sgmax) +{ + unsigned int sg_len = 0; + struct nx_sg *sg; + u64 sg_addr = (u64)start_addr; + u64 end_addr; + + /* determine the start and end for this address range - slightly + * different if this is in VMALLOC_REGION */ + if (is_vmalloc_addr(start_addr)) + sg_addr = phys_to_abs(page_to_phys(vmalloc_to_page(start_addr))) + + offset_in_page(sg_addr); + else + sg_addr = virt_to_abs(sg_addr); + + end_addr = sg_addr + len; + + /* each iteration will write one struct nx_sg element and add the + * length of data described by that element to sg_len. Once @len bytes + * have been described (or @sgmax elements have been written), the + * loop ends. min_t is used to ensure @end_addr falls on the same page + * as sg_addr, if not, we need to create another nx_sg element for the + * data on the next page */ + for (sg = sg_head; sg_len < len; sg++) { + sg->addr = sg_addr; + sg_addr = min_t(u64, NX_PAGE_NUM(sg_addr + NX_PAGE_SIZE), end_addr); + sg->len = sg_addr - sg->addr; + sg_len += sg->len; + + if ((sg - sg_head) == sgmax) { + pr_err("nx: scatter/gather list overflow, pid: %d\n", + current->pid); + return NULL; + } + } + + /* return the moved sg_head pointer */ + return sg; +} + +/** + * nx_walk_and_build - walk a linux scatterlist and build an nx scatterlist + * + * @nx_dst: pointer to the first nx_sg element to write + * @sglen: max number of nx_sg entries we're allowed to write + * @sg_src: pointer to the source linux scatterlist to walk + * @start: number of bytes to fast-forward past at the beginning of @sg_src + * @src_len: number of bytes to walk in @sg_src + */ +struct nx_sg *nx_walk_and_build(struct nx_sg *nx_dst, + unsigned int sglen, + struct scatterlist *sg_src, + unsigned int start, + unsigned int src_len) +{ + struct scatter_walk walk; + struct nx_sg *nx_sg = nx_dst; + unsigned int n, offset = 0, len = src_len; + char *dst; + + /* we need to fast forward through @start bytes first */ + for (;;) { + scatterwalk_start(&walk, sg_src); + + if (start < offset + sg_src->length) + break; + + offset += sg_src->length; + sg_src = scatterwalk_sg_next(sg_src); + } + + /* start - offset is the number of bytes to advance in the scatterlist + * element we're currently looking at */ + scatterwalk_advance(&walk, start - offset); + + while (len && nx_sg) { + n = scatterwalk_clamp(&walk, len); + if (!n) { + scatterwalk_start(&walk, sg_next(walk.sg)); + n = scatterwalk_clamp(&walk, len); + } + dst = scatterwalk_map(&walk); + + nx_sg = nx_build_sg_list(nx_sg, dst, n, sglen); + len -= n; + + scatterwalk_unmap(dst); + scatterwalk_advance(&walk, n); + scatterwalk_done(&walk, SCATTERWALK_FROM_SG, len); + } + + /* return the moved destination pointer */ + return nx_sg; +} + +/** + * nx_build_sg_lists - walk the input scatterlists and build arrays of NX + * scatterlists based on them. + * + * @nx_ctx: NX crypto context for the lists we're building + * @desc: the block cipher descriptor for the operation + * @dst: destination scatterlist + * @src: source scatterlist + * @nbytes: length of data described in the scatterlists + * @iv: destination for the iv data, if the algorithm requires it + * + * This is common code shared by all the AES algorithms. It uses the block + * cipher walk routines to traverse input and output scatterlists, building + * corresponding NX scatterlists + */ +int nx_build_sg_lists(struct nx_crypto_ctx *nx_ctx, + struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, + unsigned int nbytes, + u8 *iv) +{ + struct nx_sg *nx_insg = nx_ctx->in_sg; + struct nx_sg *nx_outsg = nx_ctx->out_sg; + struct blkcipher_walk walk; + int rc; + + blkcipher_walk_init(&walk, dst, src, nbytes); + rc = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE); + if (rc) + goto out; + + if (iv) + memcpy(iv, walk.iv, AES_BLOCK_SIZE); + + while (walk.nbytes) { + nx_insg = nx_build_sg_list(nx_insg, walk.src.virt.addr, + walk.nbytes, nx_ctx->ap->sglen); + nx_outsg = nx_build_sg_list(nx_outsg, walk.dst.virt.addr, + walk.nbytes, nx_ctx->ap->sglen); + + rc = blkcipher_walk_done(desc, &walk, 0); + if (rc) + break; + } + + if (walk.nbytes) { + nx_insg = nx_build_sg_list(nx_insg, walk.src.virt.addr, + walk.nbytes, nx_ctx->ap->sglen); + nx_outsg = nx_build_sg_list(nx_outsg, walk.dst.virt.addr, + walk.nbytes, nx_ctx->ap->sglen); + + rc = 0; + } + + /* these lengths should be negative, which will indicate to phyp that + * the input and output parameters are scatterlists, not linear + * buffers */ + nx_ctx->op.inlen = (nx_ctx->in_sg - nx_insg) * sizeof(struct nx_sg); + nx_ctx->op.outlen = (nx_ctx->out_sg - nx_outsg) * sizeof(struct nx_sg); +out: + return rc; +} + +/** + * nx_ctx_init - initialize an nx_ctx's vio_pfo_op struct + * + * @nx_ctx: the nx context to initialize + * @function: the function code for the op + */ +void nx_ctx_init(struct nx_crypto_ctx *nx_ctx, unsigned int function) +{ + memset(nx_ctx->kmem, 0, nx_ctx->kmem_len); + nx_ctx->csbcpb->csb.valid |= NX_CSB_VALID_BIT; + + nx_ctx->op.flags = function; + nx_ctx->op.csbcpb = virt_to_abs(nx_ctx->csbcpb); + nx_ctx->op.in = virt_to_abs(nx_ctx->in_sg); + nx_ctx->op.out = virt_to_abs(nx_ctx->out_sg); + + if (nx_ctx->csbcpb_aead) { + nx_ctx->csbcpb_aead->csb.valid |= NX_CSB_VALID_BIT; + + nx_ctx->op_aead.flags = function; + nx_ctx->op_aead.csbcpb = virt_to_abs(nx_ctx->csbcpb_aead); + nx_ctx->op_aead.in = virt_to_abs(nx_ctx->in_sg); + nx_ctx->op_aead.out = virt_to_abs(nx_ctx->out_sg); + } +} + +static void nx_of_update_status(struct device *dev, + struct property *p, + struct nx_of *props) +{ + if (!strncmp(p->value, "okay", p->length)) { + props->status = NX_WAITING; + props->flags |= NX_OF_FLAG_STATUS_SET; + } else { + dev_info(dev, "%s: status '%s' is not 'okay'\n", __func__, + (char *)p->value); + } +} + +static void nx_of_update_sglen(struct device *dev, + struct property *p, + struct nx_of *props) +{ + if (p->length != sizeof(props->max_sg_len)) { + dev_err(dev, "%s: unexpected format for " + "ibm,max-sg-len property\n", __func__); + dev_dbg(dev, "%s: ibm,max-sg-len is %d bytes " + "long, expected %zd bytes\n", __func__, + p->length, sizeof(props->max_sg_len)); + return; + } + + props->max_sg_len = *(u32 *)p->value; + props->flags |= NX_OF_FLAG_MAXSGLEN_SET; +} + +static void nx_of_update_msc(struct device *dev, + struct property *p, + struct nx_of *props) +{ + struct msc_triplet *trip; + struct max_sync_cop *msc; + unsigned int bytes_so_far, i, lenp; + + msc = (struct max_sync_cop *)p->value; + lenp = p->length; + + /* You can't tell if the data read in for this property is sane by its + * size alone. This is because there are sizes embedded in the data + * structure. The best we can do is check lengths as we parse and bail + * as soon as a length error is detected. */ + bytes_so_far = 0; + + while ((bytes_so_far + sizeof(struct max_sync_cop)) <= lenp) { + bytes_so_far += sizeof(struct max_sync_cop); + + trip = msc->trip; + + for (i = 0; + ((bytes_so_far + sizeof(struct msc_triplet)) <= lenp) && + i < msc->triplets; + i++) { + if (msc->fc > NX_MAX_FC || msc->mode > NX_MAX_MODE) { + dev_err(dev, "unknown function code/mode " + "combo: %d/%d (ignored)\n", msc->fc, + msc->mode); + goto next_loop; + } + + switch (trip->keybitlen) { + case 128: + case 160: + props->ap[msc->fc][msc->mode][0].databytelen = + trip->databytelen; + props->ap[msc->fc][msc->mode][0].sglen = + trip->sglen; + break; + case 192: + props->ap[msc->fc][msc->mode][1].databytelen = + trip->databytelen; + props->ap[msc->fc][msc->mode][1].sglen = + trip->sglen; + break; + case 256: + if (msc->fc == NX_FC_AES) { + props->ap[msc->fc][msc->mode][2]. + databytelen = trip->databytelen; + props->ap[msc->fc][msc->mode][2].sglen = + trip->sglen; + } else if (msc->fc == NX_FC_AES_HMAC || + msc->fc == NX_FC_SHA) { + props->ap[msc->fc][msc->mode][1]. + databytelen = trip->databytelen; + props->ap[msc->fc][msc->mode][1].sglen = + trip->sglen; + } else { + dev_warn(dev, "unknown function " + "code/key bit len combo" + ": (%u/256)\n", msc->fc); + } + break; + case 512: + props->ap[msc->fc][msc->mode][2].databytelen = + trip->databytelen; + props->ap[msc->fc][msc->mode][2].sglen = + trip->sglen; + break; + default: + dev_warn(dev, "unknown function code/key bit " + "len combo: (%u/%u)\n", msc->fc, + trip->keybitlen); + break; + } +next_loop: + bytes_so_far += sizeof(struct msc_triplet); + trip++; + } + + msc = (struct max_sync_cop *)trip; + } + + props->flags |= NX_OF_FLAG_MAXSYNCCOP_SET; +} + +/** + * nx_of_init - read openFirmware values from the device tree + * + * @dev: device handle + * @props: pointer to struct to hold the properties values + * + * Called once at driver probe time, this function will read out the + * openFirmware properties we use at runtime. If all the OF properties are + * acceptable, when we exit this function props->flags will indicate that + * we're ready to register our crypto algorithms. + */ +static void nx_of_init(struct device *dev, struct nx_of *props) +{ + struct device_node *base_node = dev->of_node; + struct property *p; + + p = of_find_property(base_node, "status", NULL); + if (!p) + dev_info(dev, "%s: property 'status' not found\n", __func__); + else + nx_of_update_status(dev, p, props); + + p = of_find_property(base_node, "ibm,max-sg-len", NULL); + if (!p) + dev_info(dev, "%s: property 'ibm,max-sg-len' not found\n", + __func__); + else + nx_of_update_sglen(dev, p, props); + + p = of_find_property(base_node, "ibm,max-sync-cop", NULL); + if (!p) + dev_info(dev, "%s: property 'ibm,max-sync-cop' not found\n", + __func__); + else + nx_of_update_msc(dev, p, props); +} + +/** + * nx_register_algs - register algorithms with the crypto API + * + * Called from nx_probe() + * + * If all OF properties are in an acceptable state, the driver flags will + * indicate that we're ready and we'll create our debugfs files and register + * out crypto algorithms. + */ +static int nx_register_algs(void) +{ + int rc = -1; + + if (nx_driver.of.flags != NX_OF_FLAG_MASK_READY) + goto out; + + memset(&nx_driver.stats, 0, sizeof(struct nx_stats)); + + rc = NX_DEBUGFS_INIT(&nx_driver); + if (rc) + goto out; + + rc = crypto_register_alg(&nx_ecb_aes_alg); + if (rc) + goto out; + + rc = crypto_register_alg(&nx_cbc_aes_alg); + if (rc) + goto out_unreg_ecb; + + rc = crypto_register_alg(&nx_ctr_aes_alg); + if (rc) + goto out_unreg_cbc; + + rc = crypto_register_alg(&nx_ctr3686_aes_alg); + if (rc) + goto out_unreg_ctr; + + rc = crypto_register_alg(&nx_gcm_aes_alg); + if (rc) + goto out_unreg_ctr3686; + + rc = crypto_register_alg(&nx_gcm4106_aes_alg); + if (rc) + goto out_unreg_gcm; + + rc = crypto_register_alg(&nx_ccm_aes_alg); + if (rc) + goto out_unreg_gcm4106; + + rc = crypto_register_alg(&nx_ccm4309_aes_alg); + if (rc) + goto out_unreg_ccm; + + rc = crypto_register_shash(&nx_shash_sha256_alg); + if (rc) + goto out_unreg_ccm4309; + + rc = crypto_register_shash(&nx_shash_sha512_alg); + if (rc) + goto out_unreg_s256; + + rc = crypto_register_shash(&nx_shash_aes_xcbc_alg); + if (rc) + goto out_unreg_s512; + + nx_driver.of.status = NX_OKAY; + + goto out; + +out_unreg_s512: + crypto_unregister_shash(&nx_shash_sha512_alg); +out_unreg_s256: + crypto_unregister_shash(&nx_shash_sha256_alg); +out_unreg_ccm4309: + crypto_unregister_alg(&nx_ccm4309_aes_alg); +out_unreg_ccm: + crypto_unregister_alg(&nx_ccm_aes_alg); +out_unreg_gcm4106: + crypto_unregister_alg(&nx_gcm4106_aes_alg); +out_unreg_gcm: + crypto_unregister_alg(&nx_gcm_aes_alg); +out_unreg_ctr3686: + crypto_unregister_alg(&nx_ctr3686_aes_alg); +out_unreg_ctr: + crypto_unregister_alg(&nx_ctr_aes_alg); +out_unreg_cbc: + crypto_unregister_alg(&nx_cbc_aes_alg); +out_unreg_ecb: + crypto_unregister_alg(&nx_ecb_aes_alg); +out: + return rc; +} + +/** + * nx_crypto_ctx_init - create and initialize a crypto api context + * + * @nx_ctx: the crypto api context + * @fc: function code for the context + * @mode: the function code specific mode for this context + */ +static int nx_crypto_ctx_init(struct nx_crypto_ctx *nx_ctx, u32 fc, u32 mode) +{ + if (nx_driver.of.status != NX_OKAY) { + pr_err("Attempt to initialize NX crypto context while device " + "is not available!\n"); + return -ENODEV; + } + + /* we need an extra page for csbcpb_aead for these modes */ + if (mode == NX_MODE_AES_GCM || mode == NX_MODE_AES_CCM) + nx_ctx->kmem_len = (4 * NX_PAGE_SIZE) + + sizeof(struct nx_csbcpb); + else + nx_ctx->kmem_len = (3 * NX_PAGE_SIZE) + + sizeof(struct nx_csbcpb); + + nx_ctx->kmem = kmalloc(nx_ctx->kmem_len, GFP_KERNEL); + if (!nx_ctx->kmem) + return -ENOMEM; + + /* the csbcpb and scatterlists must be 4K aligned pages */ + nx_ctx->csbcpb = (struct nx_csbcpb *)(round_up((u64)nx_ctx->kmem, + (u64)NX_PAGE_SIZE)); + nx_ctx->in_sg = (struct nx_sg *)((u8 *)nx_ctx->csbcpb + NX_PAGE_SIZE); + nx_ctx->out_sg = (struct nx_sg *)((u8 *)nx_ctx->in_sg + NX_PAGE_SIZE); + + if (mode == NX_MODE_AES_GCM || mode == NX_MODE_AES_CCM) + nx_ctx->csbcpb_aead = + (struct nx_csbcpb *)((u8 *)nx_ctx->out_sg + + NX_PAGE_SIZE); + + /* give each context a pointer to global stats and their OF + * properties */ + nx_ctx->stats = &nx_driver.stats; + memcpy(nx_ctx->props, nx_driver.of.ap[fc][mode], + sizeof(struct alg_props) * 3); + + return 0; +} + +/* entry points from the crypto tfm initializers */ +int nx_crypto_ctx_aes_ccm_init(struct crypto_tfm *tfm) +{ + return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES, + NX_MODE_AES_CCM); +} + +int nx_crypto_ctx_aes_gcm_init(struct crypto_tfm *tfm) +{ + return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES, + NX_MODE_AES_GCM); +} + +int nx_crypto_ctx_aes_ctr_init(struct crypto_tfm *tfm) +{ + return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES, + NX_MODE_AES_CTR); +} + +int nx_crypto_ctx_aes_cbc_init(struct crypto_tfm *tfm) +{ + return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES, + NX_MODE_AES_CBC); +} + +int nx_crypto_ctx_aes_ecb_init(struct crypto_tfm *tfm) +{ + return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES, + NX_MODE_AES_ECB); +} + +int nx_crypto_ctx_sha_init(struct crypto_tfm *tfm) +{ + return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_SHA, NX_MODE_SHA); +} + +int nx_crypto_ctx_aes_xcbc_init(struct crypto_tfm *tfm) +{ + return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES, + NX_MODE_AES_XCBC_MAC); +} + +/** + * nx_crypto_ctx_exit - destroy a crypto api context + * + * @tfm: the crypto transform pointer for the context + * + * As crypto API contexts are destroyed, this exit hook is called to free the + * memory associated with it. + */ +void nx_crypto_ctx_exit(struct crypto_tfm *tfm) +{ + struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm); + + kzfree(nx_ctx->kmem); + nx_ctx->csbcpb = NULL; + nx_ctx->csbcpb_aead = NULL; + nx_ctx->in_sg = NULL; + nx_ctx->out_sg = NULL; +} + +static int __devinit nx_probe(struct vio_dev *viodev, + const struct vio_device_id *id) +{ + dev_dbg(&viodev->dev, "driver probed: %s resource id: 0x%x\n", + viodev->name, viodev->resource_id); + + if (nx_driver.viodev) { + dev_err(&viodev->dev, "%s: Attempt to register more than one " + "instance of the hardware\n", __func__); + return -EINVAL; + } + + nx_driver.viodev = viodev; + + nx_of_init(&viodev->dev, &nx_driver.of); + + return nx_register_algs(); +} + +static int __devexit nx_remove(struct vio_dev *viodev) +{ + dev_dbg(&viodev->dev, "entering nx_remove for UA 0x%x\n", + viodev->unit_address); + + if (nx_driver.of.status == NX_OKAY) { + NX_DEBUGFS_FINI(&nx_driver); + + crypto_unregister_alg(&nx_ccm_aes_alg); + crypto_unregister_alg(&nx_ccm4309_aes_alg); + crypto_unregister_alg(&nx_gcm_aes_alg); + crypto_unregister_alg(&nx_gcm4106_aes_alg); + crypto_unregister_alg(&nx_ctr_aes_alg); + crypto_unregister_alg(&nx_ctr3686_aes_alg); + crypto_unregister_alg(&nx_cbc_aes_alg); + crypto_unregister_alg(&nx_ecb_aes_alg); + crypto_unregister_shash(&nx_shash_sha256_alg); + crypto_unregister_shash(&nx_shash_sha512_alg); + crypto_unregister_shash(&nx_shash_aes_xcbc_alg); + } + + return 0; +} + + +/* module wide initialization/cleanup */ +static int __init nx_init(void) +{ + return vio_register_driver(&nx_driver.viodriver); +} + +static void __exit nx_fini(void) +{ + vio_unregister_driver(&nx_driver.viodriver); +} + +static struct vio_device_id nx_crypto_driver_ids[] __devinitdata = { + { "ibm,sym-encryption-v1", "ibm,sym-encryption" }, + { "", "" } +}; +MODULE_DEVICE_TABLE(vio, nx_crypto_driver_ids); + +/* driver state structure */ +struct nx_crypto_driver nx_driver = { + .viodriver = { + .id_table = nx_crypto_driver_ids, + .probe = nx_probe, + .remove = nx_remove, + .name = NX_NAME, + }, +}; + +module_init(nx_init); +module_exit(nx_fini); + +MODULE_AUTHOR("Kent Yoder <yoder1@us.ibm.com>"); +MODULE_DESCRIPTION(NX_STRING); +MODULE_LICENSE("GPL"); +MODULE_VERSION(NX_VERSION); diff --git a/drivers/crypto/nx/nx.h b/drivers/crypto/nx/nx.h new file mode 100644 index 000000000000..3232b182dd28 --- /dev/null +++ b/drivers/crypto/nx/nx.h @@ -0,0 +1,193 @@ + +#ifndef __NX_H__ +#define __NX_H__ + +#define NX_NAME "nx-crypto" +#define NX_STRING "IBM Power7+ Nest Accelerator Crypto Driver" +#define NX_VERSION "1.0" + +static const char nx_driver_string[] = NX_STRING; +static const char nx_driver_version[] = NX_VERSION; + +/* a scatterlist in the format PHYP is expecting */ +struct nx_sg { + u64 addr; + u32 rsvd; + u32 len; +} __attribute((packed)); + +#define NX_PAGE_SIZE (4096) +#define NX_MAX_SG_ENTRIES (NX_PAGE_SIZE/(sizeof(struct nx_sg))) + +enum nx_status { + NX_DISABLED, + NX_WAITING, + NX_OKAY +}; + +/* msc_triplet and max_sync_cop are used only to assist in parsing the + * openFirmware property */ +struct msc_triplet { + u32 keybitlen; + u32 databytelen; + u32 sglen; +} __packed; + +struct max_sync_cop { + u32 fc; + u32 mode; + u32 triplets; + struct msc_triplet trip[0]; +} __packed; + +struct alg_props { + u32 databytelen; + u32 sglen; +}; + +#define NX_OF_FLAG_MAXSGLEN_SET (1) +#define NX_OF_FLAG_STATUS_SET (2) +#define NX_OF_FLAG_MAXSYNCCOP_SET (4) +#define NX_OF_FLAG_MASK_READY (NX_OF_FLAG_MAXSGLEN_SET | \ + NX_OF_FLAG_STATUS_SET | \ + NX_OF_FLAG_MAXSYNCCOP_SET) +struct nx_of { + u32 flags; + u32 max_sg_len; + enum nx_status status; + struct alg_props ap[NX_MAX_FC][NX_MAX_MODE][3]; +}; + +struct nx_stats { + atomic_t aes_ops; + atomic64_t aes_bytes; + atomic_t sha256_ops; + atomic64_t sha256_bytes; + atomic_t sha512_ops; + atomic64_t sha512_bytes; + + atomic_t sync_ops; + + atomic_t errors; + atomic_t last_error; + atomic_t last_error_pid; +}; + +struct nx_debugfs { + struct dentry *dfs_root; + struct dentry *dfs_aes_ops, *dfs_aes_bytes; + struct dentry *dfs_sha256_ops, *dfs_sha256_bytes; + struct dentry *dfs_sha512_ops, *dfs_sha512_bytes; + struct dentry *dfs_errors, *dfs_last_error, *dfs_last_error_pid; +}; + +struct nx_crypto_driver { + struct nx_stats stats; + struct nx_of of; + struct vio_dev *viodev; + struct vio_driver viodriver; + struct nx_debugfs dfs; +}; + +#define NX_GCM4106_NONCE_LEN (4) +#define NX_GCM_CTR_OFFSET (12) +struct nx_gcm_priv { + u8 iv[16]; + u8 iauth_tag[16]; + u8 nonce[NX_GCM4106_NONCE_LEN]; +}; + +#define NX_CCM_AES_KEY_LEN (16) +#define NX_CCM4309_AES_KEY_LEN (19) +#define NX_CCM4309_NONCE_LEN (3) +struct nx_ccm_priv { + u8 iv[16]; + u8 b0[16]; + u8 iauth_tag[16]; + u8 oauth_tag[16]; + u8 nonce[NX_CCM4309_NONCE_LEN]; +}; + +struct nx_xcbc_priv { + u8 key[16]; +}; + +struct nx_ctr_priv { + u8 iv[16]; +}; + +struct nx_crypto_ctx { + void *kmem; /* unaligned, kmalloc'd buffer */ + size_t kmem_len; /* length of kmem */ + struct nx_csbcpb *csbcpb; /* aligned page given to phyp @ hcall time */ + struct vio_pfo_op op; /* operation struct with hcall parameters */ + struct nx_csbcpb *csbcpb_aead; /* secondary csbcpb used by AEAD algs */ + struct vio_pfo_op op_aead;/* operation struct for csbcpb_aead */ + + struct nx_sg *in_sg; /* aligned pointer into kmem to an sg list */ + struct nx_sg *out_sg; /* aligned pointer into kmem to an sg list */ + + struct alg_props *ap; /* pointer into props based on our key size */ + struct alg_props props[3];/* openFirmware properties for requests */ + struct nx_stats *stats; /* pointer into an nx_crypto_driver for stats + reporting */ + + union { + struct nx_gcm_priv gcm; + struct nx_ccm_priv ccm; + struct nx_xcbc_priv xcbc; + struct nx_ctr_priv ctr; + } priv; +}; + +/* prototypes */ +int nx_crypto_ctx_aes_ccm_init(struct crypto_tfm *tfm); +int nx_crypto_ctx_aes_gcm_init(struct crypto_tfm *tfm); +int nx_crypto_ctx_aes_xcbc_init(struct crypto_tfm *tfm); +int nx_crypto_ctx_aes_ctr_init(struct crypto_tfm *tfm); +int nx_crypto_ctx_aes_cbc_init(struct crypto_tfm *tfm); +int nx_crypto_ctx_aes_ecb_init(struct crypto_tfm *tfm); +int nx_crypto_ctx_sha_init(struct crypto_tfm *tfm); +void nx_crypto_ctx_exit(struct crypto_tfm *tfm); +void nx_ctx_init(struct nx_crypto_ctx *nx_ctx, unsigned int function); +int nx_hcall_sync(struct nx_crypto_ctx *ctx, struct vio_pfo_op *op, + u32 may_sleep); +struct nx_sg *nx_build_sg_list(struct nx_sg *, u8 *, unsigned int, u32); +int nx_build_sg_lists(struct nx_crypto_ctx *, struct blkcipher_desc *, + struct scatterlist *, struct scatterlist *, unsigned int, + u8 *); +struct nx_sg *nx_walk_and_build(struct nx_sg *, unsigned int, + struct scatterlist *, unsigned int, + unsigned int); + +#ifdef CONFIG_DEBUG_FS +#define NX_DEBUGFS_INIT(drv) nx_debugfs_init(drv) +#define NX_DEBUGFS_FINI(drv) nx_debugfs_fini(drv) + +int nx_debugfs_init(struct nx_crypto_driver *); +void nx_debugfs_fini(struct nx_crypto_driver *); +#else +#define NX_DEBUGFS_INIT(drv) (0) +#define NX_DEBUGFS_FINI(drv) (0) +#endif + +#define NX_PAGE_NUM(x) ((u64)(x) & 0xfffffffffffff000ULL) + +extern struct crypto_alg nx_cbc_aes_alg; +extern struct crypto_alg nx_ecb_aes_alg; +extern struct crypto_alg nx_gcm_aes_alg; +extern struct crypto_alg nx_gcm4106_aes_alg; +extern struct crypto_alg nx_ctr_aes_alg; +extern struct crypto_alg nx_ctr3686_aes_alg; +extern struct crypto_alg nx_ccm_aes_alg; +extern struct crypto_alg nx_ccm4309_aes_alg; +extern struct shash_alg nx_shash_aes_xcbc_alg; +extern struct shash_alg nx_shash_sha512_alg; +extern struct shash_alg nx_shash_sha256_alg; + +extern struct nx_crypto_driver nx_driver; + +#define SCATTERWALK_TO_SG 1 +#define SCATTERWALK_FROM_SG 0 + +#endif diff --git a/drivers/crypto/nx/nx_csbcpb.h b/drivers/crypto/nx/nx_csbcpb.h new file mode 100644 index 000000000000..a304f956d6f8 --- /dev/null +++ b/drivers/crypto/nx/nx_csbcpb.h @@ -0,0 +1,205 @@ + +#ifndef __NX_CSBCPB_H__ +#define __NX_CSBCPB_H__ + +struct cop_symcpb_aes_ecb { + u8 key[32]; + u8 __rsvd[80]; +} __packed; + +struct cop_symcpb_aes_cbc { + u8 iv[16]; + u8 key[32]; + u8 cv[16]; + u32 spbc; + u8 __rsvd[44]; +} __packed; + +struct cop_symcpb_aes_gca { + u8 in_pat[16]; + u8 key[32]; + u8 out_pat[16]; + u32 spbc; + u8 __rsvd[44]; +} __packed; + +struct cop_symcpb_aes_gcm { + u8 in_pat_or_aad[16]; + u8 iv_or_cnt[16]; + u64 bit_length_aad; + u64 bit_length_data; + u8 in_s0[16]; + u8 key[32]; + u8 __rsvd1[16]; + u8 out_pat_or_mac[16]; + u8 out_s0[16]; + u8 out_cnt[16]; + u32 spbc; + u8 __rsvd2[12]; +} __packed; + +struct cop_symcpb_aes_ctr { + u8 iv[16]; + u8 key[32]; + u8 cv[16]; + u32 spbc; + u8 __rsvd2[44]; +} __packed; + +struct cop_symcpb_aes_cca { + u8 b0[16]; + u8 b1[16]; + u8 key[16]; + u8 out_pat_or_b0[16]; + u32 spbc; + u8 __rsvd[44]; +} __packed; + +struct cop_symcpb_aes_ccm { + u8 in_pat_or_b0[16]; + u8 iv_or_ctr[16]; + u8 in_s0[16]; + u8 key[16]; + u8 __rsvd1[48]; + u8 out_pat_or_mac[16]; + u8 out_s0[16]; + u8 out_ctr[16]; + u32 spbc; + u8 __rsvd2[12]; +} __packed; + +struct cop_symcpb_aes_xcbc { + u8 cv[16]; + u8 key[16]; + u8 __rsvd1[16]; + u8 out_cv_mac[16]; + u32 spbc; + u8 __rsvd2[44]; +} __packed; + +struct cop_symcpb_sha256 { + u64 message_bit_length; + u64 __rsvd1; + u8 input_partial_digest[32]; + u8 message_digest[32]; + u32 spbc; + u8 __rsvd2[44]; +} __packed; + +struct cop_symcpb_sha512 { + u64 message_bit_length_hi; + u64 message_bit_length_lo; + u8 input_partial_digest[64]; + u8 __rsvd1[32]; + u8 message_digest[64]; + u32 spbc; + u8 __rsvd2[76]; +} __packed; + +#define NX_FDM_INTERMEDIATE 0x01 +#define NX_FDM_CONTINUATION 0x02 +#define NX_FDM_ENDE_ENCRYPT 0x80 + +#define NX_CPB_FDM(c) ((c)->cpb.hdr.fdm) +#define NX_CPB_KS_DS(c) ((c)->cpb.hdr.ks_ds) + +#define NX_CPB_KEY_SIZE(c) (NX_CPB_KS_DS(c) >> 4) +#define NX_CPB_SET_KEY_SIZE(c, x) NX_CPB_KS_DS(c) |= ((x) << 4) +#define NX_CPB_SET_DIGEST_SIZE(c, x) NX_CPB_KS_DS(c) |= (x) + +struct cop_symcpb_header { + u8 mode; + u8 fdm; + u8 ks_ds; + u8 pad_byte; + u8 __rsvd[12]; +} __packed; + +struct cop_parameter_block { + struct cop_symcpb_header hdr; + union { + struct cop_symcpb_aes_ecb aes_ecb; + struct cop_symcpb_aes_cbc aes_cbc; + struct cop_symcpb_aes_gca aes_gca; + struct cop_symcpb_aes_gcm aes_gcm; + struct cop_symcpb_aes_cca aes_cca; + struct cop_symcpb_aes_ccm aes_ccm; + struct cop_symcpb_aes_ctr aes_ctr; + struct cop_symcpb_aes_xcbc aes_xcbc; + struct cop_symcpb_sha256 sha256; + struct cop_symcpb_sha512 sha512; + }; +} __packed; + +#define NX_CSB_VALID_BIT 0x80 + +/* co-processor status block */ +struct cop_status_block { + u8 valid; + u8 crb_seq_number; + u8 completion_code; + u8 completion_extension; + u32 processed_byte_count; + u64 address; +} __packed; + +/* Nest accelerator workbook section 4.4 */ +struct nx_csbcpb { + unsigned char __rsvd[112]; + struct cop_status_block csb; + struct cop_parameter_block cpb; +} __packed; + +/* nx_csbcpb related definitions */ +#define NX_MODE_AES_ECB 0 +#define NX_MODE_AES_CBC 1 +#define NX_MODE_AES_GMAC 2 +#define NX_MODE_AES_GCA 3 +#define NX_MODE_AES_GCM 4 +#define NX_MODE_AES_CCA 5 +#define NX_MODE_AES_CCM 6 +#define NX_MODE_AES_CTR 7 +#define NX_MODE_AES_XCBC_MAC 20 +#define NX_MODE_SHA 0 +#define NX_MODE_SHA_HMAC 1 +#define NX_MODE_AES_CBC_HMAC_ETA 8 +#define NX_MODE_AES_CBC_HMAC_ATE 9 +#define NX_MODE_AES_CBC_HMAC_EAA 10 +#define NX_MODE_AES_CTR_HMAC_ETA 12 +#define NX_MODE_AES_CTR_HMAC_ATE 13 +#define NX_MODE_AES_CTR_HMAC_EAA 14 + +#define NX_FDM_CI_FULL 0 +#define NX_FDM_CI_FIRST 1 +#define NX_FDM_CI_LAST 2 +#define NX_FDM_CI_MIDDLE 3 + +#define NX_FDM_PR_NONE 0 +#define NX_FDM_PR_PAD 1 + +#define NX_KS_AES_128 1 +#define NX_KS_AES_192 2 +#define NX_KS_AES_256 3 + +#define NX_DS_SHA256 2 +#define NX_DS_SHA512 3 + +#define NX_FC_AES 0 +#define NX_FC_SHA 2 +#define NX_FC_AES_HMAC 6 + +#define NX_MAX_FC (NX_FC_AES_HMAC + 1) +#define NX_MAX_MODE (NX_MODE_AES_XCBC_MAC + 1) + +#define HCOP_FC_AES NX_FC_AES +#define HCOP_FC_SHA NX_FC_SHA +#define HCOP_FC_AES_HMAC NX_FC_AES_HMAC + +/* indices into the array of algorithm properties */ +#define NX_PROPS_AES_128 0 +#define NX_PROPS_AES_192 1 +#define NX_PROPS_AES_256 2 +#define NX_PROPS_SHA256 1 +#define NX_PROPS_SHA512 2 + +#endif diff --git a/drivers/crypto/nx/nx_debugfs.c b/drivers/crypto/nx/nx_debugfs.c new file mode 100644 index 000000000000..7ab2e8dcd9b4 --- /dev/null +++ b/drivers/crypto/nx/nx_debugfs.c @@ -0,0 +1,103 @@ +/** + * debugfs routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2011-2012 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Kent Yoder <yoder1@us.ibm.com> + */ + +#include <linux/device.h> +#include <linux/kobject.h> +#include <linux/string.h> +#include <linux/debugfs.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/crypto.h> +#include <crypto/hash.h> +#include <asm/vio.h> + +#include "nx_csbcpb.h" +#include "nx.h" + +#ifdef CONFIG_DEBUG_FS + +/* + * debugfs + * + * For documentation on these attributes, please see: + * + * Documentation/ABI/testing/debugfs-pfo-nx-crypto + */ + +int nx_debugfs_init(struct nx_crypto_driver *drv) +{ + struct nx_debugfs *dfs = &drv->dfs; + + dfs->dfs_root = debugfs_create_dir(NX_NAME, NULL); + + dfs->dfs_aes_ops = + debugfs_create_u32("aes_ops", + S_IRUSR | S_IRGRP | S_IROTH, + dfs->dfs_root, (u32 *)&drv->stats.aes_ops); + dfs->dfs_sha256_ops = + debugfs_create_u32("sha256_ops", + S_IRUSR | S_IRGRP | S_IROTH, + dfs->dfs_root, + (u32 *)&drv->stats.sha256_ops); + dfs->dfs_sha512_ops = + debugfs_create_u32("sha512_ops", + S_IRUSR | S_IRGRP | S_IROTH, + dfs->dfs_root, + (u32 *)&drv->stats.sha512_ops); + dfs->dfs_aes_bytes = + debugfs_create_u64("aes_bytes", + S_IRUSR | S_IRGRP | S_IROTH, + dfs->dfs_root, + (u64 *)&drv->stats.aes_bytes); + dfs->dfs_sha256_bytes = + debugfs_create_u64("sha256_bytes", + S_IRUSR | S_IRGRP | S_IROTH, + dfs->dfs_root, + (u64 *)&drv->stats.sha256_bytes); + dfs->dfs_sha512_bytes = + debugfs_create_u64("sha512_bytes", + S_IRUSR | S_IRGRP | S_IROTH, + dfs->dfs_root, + (u64 *)&drv->stats.sha512_bytes); + dfs->dfs_errors = + debugfs_create_u32("errors", + S_IRUSR | S_IRGRP | S_IROTH, + dfs->dfs_root, (u32 *)&drv->stats.errors); + dfs->dfs_last_error = + debugfs_create_u32("last_error", + S_IRUSR | S_IRGRP | S_IROTH, + dfs->dfs_root, + (u32 *)&drv->stats.last_error); + dfs->dfs_last_error_pid = + debugfs_create_u32("last_error_pid", + S_IRUSR | S_IRGRP | S_IROTH, + dfs->dfs_root, + (u32 *)&drv->stats.last_error_pid); + return 0; +} + +void +nx_debugfs_fini(struct nx_crypto_driver *drv) +{ + debugfs_remove_recursive(drv->dfs.dfs_root); +} + +#endif diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c index 7b397c6f607e..31c47e18d83c 100644 --- a/drivers/i2c/busses/i2c-powermac.c +++ b/drivers/i2c/busses/i2c-powermac.c @@ -227,6 +227,72 @@ static int __devexit i2c_powermac_remove(struct platform_device *dev) return 0; } +static void __devinit i2c_powermac_register_devices(struct i2c_adapter *adap, + struct pmac_i2c_bus *bus) +{ + struct i2c_client *newdev; + struct device_node *node; + + for_each_child_of_node(adap->dev.of_node, node) { + struct i2c_board_info info = {}; + struct dev_archdata dev_ad = {}; + const __be32 *reg; + char tmp[16]; + u32 addr; + int len; + + /* Get address & channel */ + reg = of_get_property(node, "reg", &len); + if (!reg || (len < sizeof(int))) { + dev_err(&adap->dev, "i2c-powermac: invalid reg on %s\n", + node->full_name); + continue; + } + addr = be32_to_cpup(reg); + + /* Multibus setup, check channel */ + if (!pmac_i2c_match_adapter(node, adap)) + continue; + + dev_dbg(&adap->dev, "i2c-powermac: register %s\n", + node->full_name); + + /* Make up a modalias. Note: we to _NOT_ want the standard + * i2c drivers to match with any of our powermac stuff + * unless they have been specifically modified to handle + * it on a case by case basis. For example, for thermal + * control, things like lm75 etc... shall match with their + * corresponding windfarm drivers, _NOT_ the generic ones, + * so we force a prefix of AAPL, onto the modalias to + * make that happen + */ + if (of_modalias_node(node, tmp, sizeof(tmp)) < 0) { + dev_err(&adap->dev, "i2c-powermac: modalias failure" + " on %s\n", node->full_name); + continue; + } + snprintf(info.type, sizeof(info.type), "MAC,%s", tmp); + + /* Fill out the rest of the info structure */ + info.addr = (addr & 0xff) >> 1; + info.irq = irq_of_parse_and_map(node, 0); + info.of_node = of_node_get(node); + info.archdata = &dev_ad; + + newdev = i2c_new_device(adap, &info); + if (!newdev) { + dev_err(&adap->dev, "i2c-powermac: Failure to register" + " %s\n", node->full_name); + of_node_put(node); + /* We do not dispose of the interrupt mapping on + * purpose. It's not necessary (interrupt cannot be + * re-used) and somebody else might have grabbed it + * via direct DT lookup so let's not bother + */ + continue; + } + } +} static int __devinit i2c_powermac_probe(struct platform_device *dev) { @@ -272,6 +338,7 @@ static int __devinit i2c_powermac_probe(struct platform_device *dev) adapter->algo = &i2c_powermac_algorithm; i2c_set_adapdata(adapter, bus); adapter->dev.parent = &dev->dev; + adapter->dev.of_node = dev->dev.of_node; rc = i2c_add_adapter(adapter); if (rc) { printk(KERN_ERR "i2c-powermac: Adapter %s registration " @@ -281,33 +348,10 @@ static int __devinit i2c_powermac_probe(struct platform_device *dev) printk(KERN_INFO "PowerMac i2c bus %s registered\n", adapter->name); - if (!strncmp(basename, "uni-n", 5)) { - struct device_node *np; - const u32 *prop; - struct i2c_board_info info; - - /* Instantiate I2C motion sensor if present */ - np = of_find_node_by_name(NULL, "accelerometer"); - if (np && of_device_is_compatible(np, "AAPL,accelerometer_1") && - (prop = of_get_property(np, "reg", NULL))) { - int i2c_bus; - const char *tmp_bus; - - /* look for bus either using "reg" or by path */ - tmp_bus = strstr(np->full_name, "/i2c-bus@"); - if (tmp_bus) - i2c_bus = *(tmp_bus + 9) - '0'; - else - i2c_bus = ((*prop) >> 8) & 0x0f; - - if (pmac_i2c_get_channel(bus) == i2c_bus) { - memset(&info, 0, sizeof(struct i2c_board_info)); - info.addr = ((*prop) & 0xff) >> 1; - strlcpy(info.type, "ams", I2C_NAME_SIZE); - i2c_new_device(adapter, &info); - } - } - } + /* Cannot use of_i2c_register_devices() due to Apple device-tree + * funkyness + */ + i2c_powermac_register_devices(adapter, bus); return rc; } diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig index fa51af11c6f1..a555da64224e 100644 --- a/drivers/macintosh/Kconfig +++ b/drivers/macintosh/Kconfig @@ -204,11 +204,14 @@ config THERM_ADT746X better fan behaviour by default, and some manual control. config THERM_PM72 - tristate "Support for thermal management on PowerMac G5" + tristate "Support for thermal management on PowerMac G5 (AGP)" depends on I2C && I2C_POWERMAC && PPC_PMAC64 + default n help This driver provides thermostat and fan control for the desktop - G5 machines. + G5 machines. + + This is deprecated, use windfarm instead. config WINDFARM tristate "New PowerMac thermal control infrastructure" @@ -221,6 +224,22 @@ config WINDFARM_PM81 help This driver provides thermal control for the iMacG5 +config WINDFARM_PM72 + tristate "Support for thermal management on PowerMac G5 (AGP)" + depends on WINDFARM && I2C && CPU_FREQ_PMAC64 && ADB_PMU + select I2C_POWERMAC + help + This driver provides thermal control for the PowerMac G5 + "AGP" variants (PowerMac 7,2 and 7,3) + +config WINDFARM_RM31 + tristate "Support for thermal management on Xserve G5" + depends on WINDFARM && I2C && CPU_FREQ_PMAC64 && ADB_PMU + select I2C_POWERMAC + help + This driver provides thermal control for the Xserve G5 + (RackMac3,1) + config WINDFARM_PM91 tristate "Support for thermal management on PowerMac9,1" depends on WINDFARM && I2C && CPU_FREQ_PMAC64 && PMAC_SMU diff --git a/drivers/macintosh/Makefile b/drivers/macintosh/Makefile index 6652a6ebb6fa..6753b65f8ede 100644 --- a/drivers/macintosh/Makefile +++ b/drivers/macintosh/Makefile @@ -29,6 +29,20 @@ obj-$(CONFIG_THERM_PM72) += therm_pm72.o obj-$(CONFIG_THERM_WINDTUNNEL) += therm_windtunnel.o obj-$(CONFIG_THERM_ADT746X) += therm_adt746x.o obj-$(CONFIG_WINDFARM) += windfarm_core.o +obj-$(CONFIG_WINDFARM_PM72) += windfarm_fcu_controls.o \ + windfarm_ad7417_sensor.o \ + windfarm_lm75_sensor.o \ + windfarm_max6690_sensor.o \ + windfarm_pid.o \ + windfarm_cpufreq_clamp.o \ + windfarm_pm72.o +obj-$(CONFIG_WINDFARM_RM31) += windfarm_fcu_controls.o \ + windfarm_ad7417_sensor.o \ + windfarm_lm75_sensor.o \ + windfarm_lm87_sensor.o \ + windfarm_pid.o \ + windfarm_cpufreq_clamp.o \ + windfarm_rm31.o obj-$(CONFIG_WINDFARM_PM81) += windfarm_smu_controls.o \ windfarm_smu_sensors.o \ windfarm_lm75_sensor.o windfarm_pid.o \ diff --git a/drivers/macintosh/ams/ams-i2c.c b/drivers/macintosh/ams/ams-i2c.c index abeecd27b484..978eda8d6678 100644 --- a/drivers/macintosh/ams/ams-i2c.c +++ b/drivers/macintosh/ams/ams-i2c.c @@ -65,7 +65,7 @@ static int ams_i2c_probe(struct i2c_client *client, static int ams_i2c_remove(struct i2c_client *client); static const struct i2c_device_id ams_id[] = { - { "ams", 0 }, + { "MAC,accelerometer_1", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, ams_id); diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c index fc71723cbc48..f433521a6f9d 100644 --- a/drivers/macintosh/therm_adt746x.c +++ b/drivers/macintosh/therm_adt746x.c @@ -47,7 +47,7 @@ static u8 FAN_SPD_SET[2] = {0x30, 0x31}; static u8 default_limits_local[3] = {70, 50, 70}; /* local, sensor1, sensor2 */ static u8 default_limits_chip[3] = {80, 65, 80}; /* local, sensor1, sensor2 */ -static const char *sensor_location[3]; +static const char *sensor_location[3] = { "?", "?", "?" }; static int limit_adjust; static int fan_speed = -1; @@ -79,18 +79,16 @@ struct thermostat { int last_speed[2]; int last_var[2]; int pwm_inv[2]; + struct task_struct *thread; + struct platform_device *pdev; + enum { + ADT7460, + ADT7467 + } type; }; -static enum {ADT7460, ADT7467} therm_type; -static int therm_bus, therm_address; -static struct platform_device * of_dev; -static struct thermostat* thermostat; -static struct task_struct *thread_therm = NULL; - static void write_both_fan_speed(struct thermostat *th, int speed); static void write_fan_speed(struct thermostat *th, int speed, int fan); -static void thermostat_create_files(void); -static void thermostat_remove_files(void); static int write_reg(struct thermostat* th, int reg, u8 data) @@ -126,66 +124,6 @@ read_reg(struct thermostat* th, int reg) return data; } -static struct i2c_driver thermostat_driver; - -static int -attach_thermostat(struct i2c_adapter *adapter) -{ - unsigned long bus_no; - struct i2c_board_info info; - struct i2c_client *client; - - if (strncmp(adapter->name, "uni-n", 5)) - return -ENODEV; - bus_no = simple_strtoul(adapter->name + 6, NULL, 10); - if (bus_no != therm_bus) - return -ENODEV; - - memset(&info, 0, sizeof(struct i2c_board_info)); - strlcpy(info.type, "therm_adt746x", I2C_NAME_SIZE); - info.addr = therm_address; - client = i2c_new_device(adapter, &info); - if (!client) - return -ENODEV; - - /* - * Let i2c-core delete that device on driver removal. - * This is safe because i2c-core holds the core_lock mutex for us. - */ - list_add_tail(&client->detected, &thermostat_driver.clients); - return 0; -} - -static int -remove_thermostat(struct i2c_client *client) -{ - struct thermostat *th = i2c_get_clientdata(client); - int i; - - thermostat_remove_files(); - - if (thread_therm != NULL) { - kthread_stop(thread_therm); - } - - printk(KERN_INFO "adt746x: Putting max temperatures back from " - "%d, %d, %d to %d, %d, %d\n", - th->limits[0], th->limits[1], th->limits[2], - th->initial_limits[0], th->initial_limits[1], - th->initial_limits[2]); - - for (i = 0; i < 3; i++) - write_reg(th, LIMIT_REG[i], th->initial_limits[i]); - - write_both_fan_speed(th, -1); - - thermostat = NULL; - - kfree(th); - - return 0; -} - static int read_fan_speed(struct thermostat *th, u8 addr) { u8 tmp[2]; @@ -203,7 +141,7 @@ static int read_fan_speed(struct thermostat *th, u8 addr) static void write_both_fan_speed(struct thermostat *th, int speed) { write_fan_speed(th, speed, 0); - if (therm_type == ADT7460) + if (th->type == ADT7460) write_fan_speed(th, speed, 1); } @@ -216,7 +154,7 @@ static void write_fan_speed(struct thermostat *th, int speed, int fan) else if (speed < -1) speed = 0; - if (therm_type == ADT7467 && fan == 1) + if (th->type == ADT7467 && fan == 1) return; if (th->last_speed[fan] != speed) { @@ -239,7 +177,7 @@ static void write_fan_speed(struct thermostat *th, int speed, int fan) write_reg(th, FAN_SPD_SET[fan], speed); } else { /* back to automatic */ - if(therm_type == ADT7460) { + if(th->type == ADT7460) { manual = read_reg(th, MANUAL_MODE[fan]) & (~MANUAL_MASK); manual &= ~INVERT_MASK; @@ -293,7 +231,7 @@ static void update_fans_speed (struct thermostat *th) /* we don't care about local sensor, so we start at sensor 1 */ for (i = 1; i < 3; i++) { int started = 0; - int fan_number = (therm_type == ADT7460 && i == 2); + int fan_number = (th->type == ADT7460 && i == 2); int var = th->temps[i] - th->limits[i]; if (var > -1) { @@ -370,116 +308,22 @@ static int monitor_task(void *arg) static void set_limit(struct thermostat *th, int i) { - /* Set sensor1 limit higher to avoid powerdowns */ - th->limits[i] = default_limits_chip[i] + limit_adjust; - write_reg(th, LIMIT_REG[i], th->limits[i]); + /* Set sensor1 limit higher to avoid powerdowns */ + th->limits[i] = default_limits_chip[i] + limit_adjust; + write_reg(th, LIMIT_REG[i], th->limits[i]); - /* set our limits to normal */ - th->limits[i] = default_limits_local[i] + limit_adjust; + /* set our limits to normal */ + th->limits[i] = default_limits_local[i] + limit_adjust; } -static int probe_thermostat(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct thermostat* th; - int rc; - int i; - - if (thermostat) - return 0; - - th = kzalloc(sizeof(struct thermostat), GFP_KERNEL); - if (!th) - return -ENOMEM; - - i2c_set_clientdata(client, th); - th->clt = client; - - rc = read_reg(th, CONFIG_REG); - if (rc < 0) { - dev_err(&client->dev, "Thermostat failed to read config!\n"); - kfree(th); - return -ENODEV; - } - - /* force manual control to start the fan quieter */ - if (fan_speed == -1) - fan_speed = 64; - - if(therm_type == ADT7460) { - printk(KERN_INFO "adt746x: ADT7460 initializing\n"); - /* The 7460 needs to be started explicitly */ - write_reg(th, CONFIG_REG, 1); - } else - printk(KERN_INFO "adt746x: ADT7467 initializing\n"); - - for (i = 0; i < 3; i++) { - th->initial_limits[i] = read_reg(th, LIMIT_REG[i]); - set_limit(th, i); - } - - printk(KERN_INFO "adt746x: Lowering max temperatures from %d, %d, %d" - " to %d, %d, %d\n", - th->initial_limits[0], th->initial_limits[1], - th->initial_limits[2], th->limits[0], th->limits[1], - th->limits[2]); - - thermostat = th; - - /* record invert bit status because fw can corrupt it after suspend */ - th->pwm_inv[0] = read_reg(th, MANUAL_MODE[0]) & INVERT_MASK; - th->pwm_inv[1] = read_reg(th, MANUAL_MODE[1]) & INVERT_MASK; - - /* be sure to really write fan speed the first time */ - th->last_speed[0] = -2; - th->last_speed[1] = -2; - th->last_var[0] = -80; - th->last_var[1] = -80; - - if (fan_speed != -1) { - /* manual mode, stop fans */ - write_both_fan_speed(th, 0); - } else { - /* automatic mode */ - write_both_fan_speed(th, -1); - } - - thread_therm = kthread_run(monitor_task, th, "kfand"); - - if (thread_therm == ERR_PTR(-ENOMEM)) { - printk(KERN_INFO "adt746x: Kthread creation failed\n"); - thread_therm = NULL; - return -ENOMEM; - } - - thermostat_create_files(); - - return 0; +#define BUILD_SHOW_FUNC_INT(name, data) \ +static ssize_t show_##name(struct device *dev, struct device_attribute *attr, char *buf) \ +{ \ + struct thermostat *th = dev_get_drvdata(dev); \ + return sprintf(buf, "%d\n", data); \ } -static const struct i2c_device_id therm_adt746x_id[] = { - { "therm_adt746x", 0 }, - { } -}; - -static struct i2c_driver thermostat_driver = { - .driver = { - .name = "therm_adt746x", - }, - .attach_adapter = attach_thermostat, - .probe = probe_thermostat, - .remove = remove_thermostat, - .id_table = therm_adt746x_id, -}; - -/* - * Now, unfortunately, sysfs doesn't give us a nice void * we could - * pass around to the attribute functions, so we don't really have - * choice but implement a bunch of them... - * - * FIXME, it does now... - */ -#define BUILD_SHOW_FUNC_INT(name, data) \ +#define BUILD_SHOW_FUNC_INT_LITE(name, data) \ static ssize_t show_##name(struct device *dev, struct device_attribute *attr, char *buf) \ { \ return sprintf(buf, "%d\n", data); \ @@ -494,22 +338,24 @@ static ssize_t show_##name(struct device *dev, struct device_attribute *attr, ch #define BUILD_SHOW_FUNC_FAN(name, data) \ static ssize_t show_##name(struct device *dev, struct device_attribute *attr, char *buf) \ { \ + struct thermostat *th = dev_get_drvdata(dev); \ return sprintf(buf, "%d (%d rpm)\n", \ - thermostat->last_speed[data], \ - read_fan_speed(thermostat, FAN_SPEED[data]) \ + th->last_speed[data], \ + read_fan_speed(th, FAN_SPEED[data]) \ ); \ } #define BUILD_STORE_FUNC_DEG(name, data) \ static ssize_t store_##name(struct device *dev, struct device_attribute *attr, const char *buf, size_t n) \ { \ + struct thermostat *th = dev_get_drvdata(dev); \ int val; \ int i; \ val = simple_strtol(buf, NULL, 10); \ printk(KERN_INFO "Adjusting limits by %d degrees\n", val); \ limit_adjust = val; \ for (i=0; i < 3; i++) \ - set_limit(thermostat, i); \ + set_limit(th, i); \ return n; \ } @@ -525,20 +371,21 @@ static ssize_t store_##name(struct device *dev, struct device_attribute *attr, c return n; \ } -BUILD_SHOW_FUNC_INT(sensor1_temperature, (read_reg(thermostat, TEMP_REG[1]))) -BUILD_SHOW_FUNC_INT(sensor2_temperature, (read_reg(thermostat, TEMP_REG[2]))) -BUILD_SHOW_FUNC_INT(sensor1_limit, thermostat->limits[1]) -BUILD_SHOW_FUNC_INT(sensor2_limit, thermostat->limits[2]) +BUILD_SHOW_FUNC_INT(sensor1_temperature, (read_reg(th, TEMP_REG[1]))) +BUILD_SHOW_FUNC_INT(sensor2_temperature, (read_reg(th, TEMP_REG[2]))) +BUILD_SHOW_FUNC_INT(sensor1_limit, th->limits[1]) +BUILD_SHOW_FUNC_INT(sensor2_limit, th->limits[2]) BUILD_SHOW_FUNC_STR(sensor1_location, sensor_location[1]) BUILD_SHOW_FUNC_STR(sensor2_location, sensor_location[2]) -BUILD_SHOW_FUNC_INT(specified_fan_speed, fan_speed) +BUILD_SHOW_FUNC_INT_LITE(specified_fan_speed, fan_speed) +BUILD_STORE_FUNC_INT(specified_fan_speed,fan_speed) + BUILD_SHOW_FUNC_FAN(sensor1_fan_speed, 0) BUILD_SHOW_FUNC_FAN(sensor2_fan_speed, 1) -BUILD_STORE_FUNC_INT(specified_fan_speed,fan_speed) -BUILD_SHOW_FUNC_INT(limit_adjust, limit_adjust) -BUILD_STORE_FUNC_DEG(limit_adjust, thermostat) +BUILD_SHOW_FUNC_INT_LITE(limit_adjust, limit_adjust) +BUILD_STORE_FUNC_DEG(limit_adjust, th) static DEVICE_ATTR(sensor1_temperature, S_IRUGO, show_sensor1_temperature,NULL); @@ -564,53 +411,77 @@ static DEVICE_ATTR(sensor2_fan_speed, S_IRUGO, static DEVICE_ATTR(limit_adjust, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH, show_limit_adjust, store_limit_adjust); - -static int __init -thermostat_init(void) +static void thermostat_create_files(struct thermostat *th) { - struct device_node* np; - const u32 *prop; - int i = 0, offset = 0; + struct device_node *np = th->clt->dev.of_node; + struct device *dev; + int err; - np = of_find_node_by_name(NULL, "fan"); - if (!np) - return -ENODEV; - if (of_device_is_compatible(np, "adt7460")) - therm_type = ADT7460; - else if (of_device_is_compatible(np, "adt7467")) - therm_type = ADT7467; - else { - of_node_put(np); - return -ENODEV; - } + /* To maintain ABI compatibility with userspace, create + * the old style platform driver and attach the attributes + * to it here + */ + th->pdev = of_platform_device_create(np, "temperatures", NULL); + if (!th->pdev) + return; + dev = &th->pdev->dev; + dev_set_drvdata(dev, th); + err = device_create_file(dev, &dev_attr_sensor1_temperature); + err |= device_create_file(dev, &dev_attr_sensor2_temperature); + err |= device_create_file(dev, &dev_attr_sensor1_limit); + err |= device_create_file(dev, &dev_attr_sensor2_limit); + err |= device_create_file(dev, &dev_attr_sensor1_location); + err |= device_create_file(dev, &dev_attr_sensor2_location); + err |= device_create_file(dev, &dev_attr_limit_adjust); + err |= device_create_file(dev, &dev_attr_specified_fan_speed); + err |= device_create_file(dev, &dev_attr_sensor1_fan_speed); + if(th->type == ADT7460) + err |= device_create_file(dev, &dev_attr_sensor2_fan_speed); + if (err) + printk(KERN_WARNING + "Failed to create temperature attribute file(s).\n"); +} - prop = of_get_property(np, "hwsensor-params-version", NULL); - printk(KERN_INFO "adt746x: version %d (%ssupported)\n", *prop, - (*prop == 1)?"":"un"); - if (*prop != 1) { - of_node_put(np); - return -ENODEV; - } +static void thermostat_remove_files(struct thermostat *th) +{ + struct device *dev; - prop = of_get_property(np, "reg", NULL); - if (!prop) { - of_node_put(np); - return -ENODEV; - } + if (!th->pdev) + return; + dev = &th->pdev->dev; + device_remove_file(dev, &dev_attr_sensor1_temperature); + device_remove_file(dev, &dev_attr_sensor2_temperature); + device_remove_file(dev, &dev_attr_sensor1_limit); + device_remove_file(dev, &dev_attr_sensor2_limit); + device_remove_file(dev, &dev_attr_sensor1_location); + device_remove_file(dev, &dev_attr_sensor2_location); + device_remove_file(dev, &dev_attr_limit_adjust); + device_remove_file(dev, &dev_attr_specified_fan_speed); + device_remove_file(dev, &dev_attr_sensor1_fan_speed); + if (th->type == ADT7460) + device_remove_file(dev, &dev_attr_sensor2_fan_speed); + of_device_unregister(th->pdev); - /* look for bus either by path or using "reg" */ - if (strstr(np->full_name, "/i2c-bus@") != NULL) { - const char *tmp_bus = (strstr(np->full_name, "/i2c-bus@") + 9); - therm_bus = tmp_bus[0]-'0'; - } else { - therm_bus = ((*prop) >> 8) & 0x0f; - } +} - therm_address = ((*prop) & 0xff) >> 1; +static int probe_thermostat(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device_node *np = client->dev.of_node; + struct thermostat* th; + const __be32 *prop; + int i, rc, vers, offset = 0; - printk(KERN_INFO "adt746x: Thermostat bus: %d, address: 0x%02x, " - "limit_adjust: %d, fan_speed: %d\n", - therm_bus, therm_address, limit_adjust, fan_speed); + if (!np) + return -ENXIO; + prop = of_get_property(np, "hwsensor-params-version", NULL); + if (!prop) + return -ENXIO; + vers = be32_to_cpup(prop); + printk(KERN_INFO "adt746x: version %d (%ssupported)\n", + vers, vers == 1 ? "" : "un"); + if (vers != 1) + return -ENXIO; if (of_get_property(np, "hwsensor-location", NULL)) { for (i = 0; i < 3; i++) { @@ -623,72 +494,129 @@ thermostat_init(void) printk(KERN_INFO "sensor %d: %s\n", i, sensor_location[i]); offset += strlen(sensor_location[i]) + 1; } - } else { - sensor_location[0] = "?"; - sensor_location[1] = "?"; - sensor_location[2] = "?"; } - of_dev = of_platform_device_create(np, "temperatures", NULL); - of_node_put(np); + th = kzalloc(sizeof(struct thermostat), GFP_KERNEL); + if (!th) + return -ENOMEM; + + i2c_set_clientdata(client, th); + th->clt = client; + th->type = id->driver_data; - if (of_dev == NULL) { - printk(KERN_ERR "Can't register temperatures device !\n"); + rc = read_reg(th, CONFIG_REG); + if (rc < 0) { + dev_err(&client->dev, "Thermostat failed to read config!\n"); + kfree(th); return -ENODEV; } -#ifndef CONFIG_I2C_POWERMAC - request_module("i2c-powermac"); -#endif + /* force manual control to start the fan quieter */ + if (fan_speed == -1) + fan_speed = 64; + + if (th->type == ADT7460) { + printk(KERN_INFO "adt746x: ADT7460 initializing\n"); + /* The 7460 needs to be started explicitly */ + write_reg(th, CONFIG_REG, 1); + } else + printk(KERN_INFO "adt746x: ADT7467 initializing\n"); - return i2c_add_driver(&thermostat_driver); + for (i = 0; i < 3; i++) { + th->initial_limits[i] = read_reg(th, LIMIT_REG[i]); + set_limit(th, i); + } + + printk(KERN_INFO "adt746x: Lowering max temperatures from %d, %d, %d" + " to %d, %d, %d\n", + th->initial_limits[0], th->initial_limits[1], + th->initial_limits[2], th->limits[0], th->limits[1], + th->limits[2]); + + /* record invert bit status because fw can corrupt it after suspend */ + th->pwm_inv[0] = read_reg(th, MANUAL_MODE[0]) & INVERT_MASK; + th->pwm_inv[1] = read_reg(th, MANUAL_MODE[1]) & INVERT_MASK; + + /* be sure to really write fan speed the first time */ + th->last_speed[0] = -2; + th->last_speed[1] = -2; + th->last_var[0] = -80; + th->last_var[1] = -80; + + if (fan_speed != -1) { + /* manual mode, stop fans */ + write_both_fan_speed(th, 0); + } else { + /* automatic mode */ + write_both_fan_speed(th, -1); + } + + th->thread = kthread_run(monitor_task, th, "kfand"); + if (th->thread == ERR_PTR(-ENOMEM)) { + printk(KERN_INFO "adt746x: Kthread creation failed\n"); + th->thread = NULL; + return -ENOMEM; + } + + thermostat_create_files(th); + + return 0; } -static void thermostat_create_files(void) +static int remove_thermostat(struct i2c_client *client) { - int err; + struct thermostat *th = i2c_get_clientdata(client); + int i; + + thermostat_remove_files(th); - err = device_create_file(&of_dev->dev, &dev_attr_sensor1_temperature); - err |= device_create_file(&of_dev->dev, &dev_attr_sensor2_temperature); - err |= device_create_file(&of_dev->dev, &dev_attr_sensor1_limit); - err |= device_create_file(&of_dev->dev, &dev_attr_sensor2_limit); - err |= device_create_file(&of_dev->dev, &dev_attr_sensor1_location); - err |= device_create_file(&of_dev->dev, &dev_attr_sensor2_location); - err |= device_create_file(&of_dev->dev, &dev_attr_limit_adjust); - err |= device_create_file(&of_dev->dev, &dev_attr_specified_fan_speed); - err |= device_create_file(&of_dev->dev, &dev_attr_sensor1_fan_speed); - if(therm_type == ADT7460) - err |= device_create_file(&of_dev->dev, &dev_attr_sensor2_fan_speed); - if (err) - printk(KERN_WARNING - "Failed to create temperature attribute file(s).\n"); + if (th->thread != NULL) + kthread_stop(th->thread); + + printk(KERN_INFO "adt746x: Putting max temperatures back from " + "%d, %d, %d to %d, %d, %d\n", + th->limits[0], th->limits[1], th->limits[2], + th->initial_limits[0], th->initial_limits[1], + th->initial_limits[2]); + + for (i = 0; i < 3; i++) + write_reg(th, LIMIT_REG[i], th->initial_limits[i]); + + write_both_fan_speed(th, -1); + + kfree(th); + + return 0; } -static void thermostat_remove_files(void) +static const struct i2c_device_id therm_adt746x_id[] = { + { "MAC,adt7460", ADT7460 }, + { "MAC,adt7467", ADT7467 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, therm_adt746x_id); + +static struct i2c_driver thermostat_driver = { + .driver = { + .name = "therm_adt746x", + }, + .probe = probe_thermostat, + .remove = remove_thermostat, + .id_table = therm_adt746x_id, +}; + +static int __init thermostat_init(void) { - if (of_dev) { - device_remove_file(&of_dev->dev, &dev_attr_sensor1_temperature); - device_remove_file(&of_dev->dev, &dev_attr_sensor2_temperature); - device_remove_file(&of_dev->dev, &dev_attr_sensor1_limit); - device_remove_file(&of_dev->dev, &dev_attr_sensor2_limit); - device_remove_file(&of_dev->dev, &dev_attr_sensor1_location); - device_remove_file(&of_dev->dev, &dev_attr_sensor2_location); - device_remove_file(&of_dev->dev, &dev_attr_limit_adjust); - device_remove_file(&of_dev->dev, &dev_attr_specified_fan_speed); - device_remove_file(&of_dev->dev, &dev_attr_sensor1_fan_speed); - - if(therm_type == ADT7460) - device_remove_file(&of_dev->dev, - &dev_attr_sensor2_fan_speed); +#ifndef CONFIG_I2C_POWERMAC + request_module("i2c-powermac"); +#endif - } + return i2c_add_driver(&thermostat_driver); } -static void __exit -thermostat_exit(void) +static void __exit thermostat_exit(void) { i2c_del_driver(&thermostat_driver); - of_device_unregister(of_dev); } module_init(thermostat_init); diff --git a/drivers/macintosh/windfarm.h b/drivers/macintosh/windfarm.h index 7a2482cc26a7..028cdac2d33d 100644 --- a/drivers/macintosh/windfarm.h +++ b/drivers/macintosh/windfarm.h @@ -17,7 +17,7 @@ #include <linux/device.h> /* Display a 16.16 fixed point value */ -#define FIX32TOPRINT(f) ((f) >> 16),((((f) & 0xffff) * 1000) >> 16) +#define FIX32TOPRINT(f) (((s32)(f)) >> 16),(((((s32)(f)) & 0xffff) * 1000) >> 16) /* * Control objects @@ -35,12 +35,13 @@ struct wf_control_ops { }; struct wf_control { - struct list_head link; - struct wf_control_ops *ops; - char *name; - int type; - struct kref ref; - struct device_attribute attr; + struct list_head link; + const struct wf_control_ops *ops; + const char *name; + int type; + struct kref ref; + struct device_attribute attr; + void *priv; }; #define WF_CONTROL_TYPE_GENERIC 0 @@ -72,6 +73,26 @@ static inline int wf_control_set_min(struct wf_control *ct) return ct->ops->set_value(ct, vmin); } +static inline int wf_control_set(struct wf_control *ct, s32 val) +{ + return ct->ops->set_value(ct, val); +} + +static inline int wf_control_get(struct wf_control *ct, s32 *val) +{ + return ct->ops->get_value(ct, val); +} + +static inline s32 wf_control_get_min(struct wf_control *ct) +{ + return ct->ops->get_min(ct); +} + +static inline s32 wf_control_get_max(struct wf_control *ct) +{ + return ct->ops->get_max(ct); +} + /* * Sensor objects */ @@ -85,11 +106,12 @@ struct wf_sensor_ops { }; struct wf_sensor { - struct list_head link; - struct wf_sensor_ops *ops; - char *name; - struct kref ref; - struct device_attribute attr; + struct list_head link; + const struct wf_sensor_ops *ops; + const char *name; + struct kref ref; + struct device_attribute attr; + void *priv; }; /* Same lifetime rules as controls */ @@ -99,6 +121,11 @@ extern struct wf_sensor * wf_find_sensor(const char *name); extern int wf_get_sensor(struct wf_sensor *sr); extern void wf_put_sensor(struct wf_sensor *sr); +static inline int wf_sensor_get(struct wf_sensor *sr, s32 *val) +{ + return sr->ops->get_value(sr, val); +} + /* For use by clients. Note that we are a bit racy here since * notifier_block doesn't have a module owner field. I may fix * it one day ... diff --git a/drivers/macintosh/windfarm_ad7417_sensor.c b/drivers/macintosh/windfarm_ad7417_sensor.c new file mode 100644 index 000000000000..ac3f243b9c5a --- /dev/null +++ b/drivers/macintosh/windfarm_ad7417_sensor.c @@ -0,0 +1,347 @@ +/* + * Windfarm PowerMac thermal control. AD7417 sensors + * + * Copyright 2012 Benjamin Herrenschmidt, IBM Corp. + * + * Released under the term of the GNU GPL v2. + */ + +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/wait.h> +#include <linux/i2c.h> +#include <asm/prom.h> +#include <asm/machdep.h> +#include <asm/io.h> +#include <asm/sections.h> + +#include "windfarm.h" +#include "windfarm_mpu.h" + +#define VERSION "1.0" + +struct wf_ad7417_priv { + struct kref ref; + struct i2c_client *i2c; + u8 config; + u8 cpu; + const struct mpu_data *mpu; + struct wf_sensor sensors[5]; + struct mutex lock; +}; + +static int wf_ad7417_temp_get(struct wf_sensor *sr, s32 *value) +{ + struct wf_ad7417_priv *pv = sr->priv; + u8 buf[2]; + s16 raw; + int rc; + + *value = 0; + mutex_lock(&pv->lock); + + /* Read temp register */ + buf[0] = 0; + rc = i2c_master_send(pv->i2c, buf, 1); + if (rc < 0) + goto error; + rc = i2c_master_recv(pv->i2c, buf, 2); + if (rc < 0) + goto error; + + /* Read a a 16-bit signed value */ + raw = be16_to_cpup((__le16 *)buf); + + /* Convert 8.8-bit to 16.16 fixed point */ + *value = ((s32)raw) << 8; + + mutex_unlock(&pv->lock); + return 0; + +error: + mutex_unlock(&pv->lock); + return -1; +} + +/* + * Scaling factors for the AD7417 ADC converters (except + * for the CPU diode which is obtained from the EEPROM). + * Those values are obtained from the property list of + * the darwin driver + */ +#define ADC_12V_CURRENT_SCALE 0x0320 /* _AD2 */ +#define ADC_CPU_VOLTAGE_SCALE 0x00a0 /* _AD3 */ +#define ADC_CPU_CURRENT_SCALE 0x1f40 /* _AD4 */ + +static void wf_ad7417_adc_convert(struct wf_ad7417_priv *pv, + int chan, s32 raw, s32 *value) +{ + switch(chan) { + case 1: /* Diode */ + *value = (raw * (s32)pv->mpu->mdiode + + ((s32)pv->mpu->bdiode << 12)) >> 2; + break; + case 2: /* 12v current */ + *value = raw * ADC_12V_CURRENT_SCALE; + break; + case 3: /* core voltage */ + *value = raw * ADC_CPU_VOLTAGE_SCALE; + break; + case 4: /* core current */ + *value = raw * ADC_CPU_CURRENT_SCALE; + break; + } +} + +static int wf_ad7417_adc_get(struct wf_sensor *sr, s32 *value) +{ + struct wf_ad7417_priv *pv = sr->priv; + int chan = sr - pv->sensors; + int i, rc; + u8 buf[2]; + u16 raw; + + *value = 0; + mutex_lock(&pv->lock); + for (i = 0; i < 10; i++) { + /* Set channel */ + buf[0] = 1; + buf[1] = (pv->config & 0x1f) | (chan << 5); + rc = i2c_master_send(pv->i2c, buf, 2); + if (rc < 0) + goto error; + + /* Wait for conversion */ + msleep(1); + + /* Switch to data register */ + buf[0] = 4; + rc = i2c_master_send(pv->i2c, buf, 1); + if (rc < 0) + goto error; + + /* Read result */ + rc = i2c_master_recv(pv->i2c, buf, 2); + if (rc < 0) + goto error; + + /* Read a a 16-bit signed value */ + raw = be16_to_cpup((__le16 *)buf) >> 6; + wf_ad7417_adc_convert(pv, chan, raw, value); + + dev_vdbg(&pv->i2c->dev, "ADC chan %d [%s]" + " raw value: 0x%x, conv to: 0x%08x\n", + chan, sr->name, raw, *value); + + mutex_unlock(&pv->lock); + return 0; + + error: + dev_dbg(&pv->i2c->dev, + "Error reading ADC, try %d...\n", i); + if (i < 9) + msleep(10); + } + mutex_unlock(&pv->lock); + return -1; +} + +static void wf_ad7417_release(struct kref *ref) +{ + struct wf_ad7417_priv *pv = container_of(ref, + struct wf_ad7417_priv, ref); + kfree(pv); +} + +static void wf_ad7417_sensor_release(struct wf_sensor *sr) +{ + struct wf_ad7417_priv *pv = sr->priv; + + kfree(sr->name); + kref_put(&pv->ref, wf_ad7417_release); +} + +static const struct wf_sensor_ops wf_ad7417_temp_ops = { + .get_value = wf_ad7417_temp_get, + .release = wf_ad7417_sensor_release, + .owner = THIS_MODULE, +}; + +static const struct wf_sensor_ops wf_ad7417_adc_ops = { + .get_value = wf_ad7417_adc_get, + .release = wf_ad7417_sensor_release, + .owner = THIS_MODULE, +}; + +static void __devinit wf_ad7417_add_sensor(struct wf_ad7417_priv *pv, + int index, const char *name, + const struct wf_sensor_ops *ops) +{ + pv->sensors[index].name = kasprintf(GFP_KERNEL, "%s-%d", name, pv->cpu); + pv->sensors[index].priv = pv; + pv->sensors[index].ops = ops; + if (!wf_register_sensor(&pv->sensors[index])) + kref_get(&pv->ref); +} + +static void __devinit wf_ad7417_init_chip(struct wf_ad7417_priv *pv) +{ + int rc; + u8 buf[2]; + u8 config = 0; + + /* + * Read ADC the configuration register and cache it. We + * also make sure Config2 contains proper values, I've seen + * cases where we got stale grabage in there, thus preventing + * proper reading of conv. values + */ + + /* Clear Config2 */ + buf[0] = 5; + buf[1] = 0; + i2c_master_send(pv->i2c, buf, 2); + + /* Read & cache Config1 */ + buf[0] = 1; + rc = i2c_master_send(pv->i2c, buf, 1); + if (rc > 0) { + rc = i2c_master_recv(pv->i2c, buf, 1); + if (rc > 0) { + config = buf[0]; + + dev_dbg(&pv->i2c->dev, "ADC config reg: %02x\n", + config); + + /* Disable shutdown mode */ + config &= 0xfe; + buf[0] = 1; + buf[1] = config; + rc = i2c_master_send(pv->i2c, buf, 2); + } + } + if (rc <= 0) + dev_err(&pv->i2c->dev, "Error reading ADC config\n"); + + pv->config = config; +} + +static int __devinit wf_ad7417_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct wf_ad7417_priv *pv; + const struct mpu_data *mpu; + const char *loc; + int cpu_nr; + + loc = of_get_property(client->dev.of_node, "hwsensor-location", NULL); + if (!loc) { + dev_warn(&client->dev, "Missing hwsensor-location property!\n"); + return -ENXIO; + } + + /* + * Identify which CPU we belong to by looking at the first entry + * in the hwsensor-location list + */ + if (!strncmp(loc, "CPU A", 5)) + cpu_nr = 0; + else if (!strncmp(loc, "CPU B", 5)) + cpu_nr = 1; + else { + pr_err("wf_ad7417: Can't identify location %s\n", loc); + return -ENXIO; + } + mpu = wf_get_mpu(cpu_nr); + if (!mpu) { + dev_err(&client->dev, "Failed to retrieve MPU data\n"); + return -ENXIO; + } + + pv = kzalloc(sizeof(struct wf_ad7417_priv), GFP_KERNEL); + if (pv == NULL) + return -ENODEV; + + kref_init(&pv->ref); + mutex_init(&pv->lock); + pv->i2c = client; + pv->cpu = cpu_nr; + pv->mpu = mpu; + dev_set_drvdata(&client->dev, pv); + + /* Initialize the chip */ + wf_ad7417_init_chip(pv); + + /* + * We cannot rely on Apple device-tree giving us child + * node with the names of the individual sensors so we + * just hard code what we know about them + */ + wf_ad7417_add_sensor(pv, 0, "cpu-amb-temp", &wf_ad7417_temp_ops); + wf_ad7417_add_sensor(pv, 1, "cpu-diode-temp", &wf_ad7417_adc_ops); + wf_ad7417_add_sensor(pv, 2, "cpu-12v-current", &wf_ad7417_adc_ops); + wf_ad7417_add_sensor(pv, 3, "cpu-voltage", &wf_ad7417_adc_ops); + wf_ad7417_add_sensor(pv, 4, "cpu-current", &wf_ad7417_adc_ops); + + return 0; +} + +static int __devexit wf_ad7417_remove(struct i2c_client *client) +{ + struct wf_ad7417_priv *pv = dev_get_drvdata(&client->dev); + int i; + + /* Mark client detached */ + pv->i2c = NULL; + + /* Release sensor */ + for (i = 0; i < 5; i++) + wf_unregister_sensor(&pv->sensors[i]); + + kref_put(&pv->ref, wf_ad7417_release); + + return 0; +} + +static const struct i2c_device_id wf_ad7417_id[] = { + { "MAC,ad7417", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, wf_ad7417_id); + +static struct i2c_driver wf_ad7417_driver = { + .driver = { + .name = "wf_ad7417", + }, + .probe = wf_ad7417_probe, + .remove = wf_ad7417_remove, + .id_table = wf_ad7417_id, +}; + +static int __devinit wf_ad7417_init(void) +{ + /* This is only supported on these machines */ + if (!of_machine_is_compatible("PowerMac7,2") && + !of_machine_is_compatible("PowerMac7,3") && + !of_machine_is_compatible("RackMac3,1")) + return -ENODEV; + + return i2c_add_driver(&wf_ad7417_driver); +} + +static void __devexit wf_ad7417_exit(void) +{ + i2c_del_driver(&wf_ad7417_driver); +} + +module_init(wf_ad7417_init); +module_exit(wf_ad7417_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>"); +MODULE_DESCRIPTION("ad7417 sensor driver for PowerMacs"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/macintosh/windfarm_core.c b/drivers/macintosh/windfarm_core.c index ce8897933a84..3ee198b65843 100644 --- a/drivers/macintosh/windfarm_core.c +++ b/drivers/macintosh/windfarm_core.c @@ -164,13 +164,27 @@ static ssize_t wf_show_control(struct device *dev, struct device_attribute *attr, char *buf) { struct wf_control *ctrl = container_of(attr, struct wf_control, attr); + const char *typestr; s32 val = 0; int err; err = ctrl->ops->get_value(ctrl, &val); - if (err < 0) + if (err < 0) { + if (err == -EFAULT) + return sprintf(buf, "<HW FAULT>\n"); return err; - return sprintf(buf, "%d\n", val); + } + switch(ctrl->type) { + case WF_CONTROL_RPM_FAN: + typestr = " RPM"; + break; + case WF_CONTROL_PWM_FAN: + typestr = " %"; + break; + default: + typestr = ""; + } + return sprintf(buf, "%d%s\n", val, typestr); } /* This is really only for debugging... */ @@ -470,11 +484,6 @@ static int __init windfarm_core_init(void) { DBG("wf: core loaded\n"); - /* Don't register on old machines that use therm_pm72 for now */ - if (of_machine_is_compatible("PowerMac7,2") || - of_machine_is_compatible("PowerMac7,3") || - of_machine_is_compatible("RackMac3,1")) - return -ENODEV; platform_device_register(&wf_platform_device); return 0; } diff --git a/drivers/macintosh/windfarm_cpufreq_clamp.c b/drivers/macintosh/windfarm_cpufreq_clamp.c index 1a77a7c97d0e..72d1fdfe02a5 100644 --- a/drivers/macintosh/windfarm_cpufreq_clamp.c +++ b/drivers/macintosh/windfarm_cpufreq_clamp.c @@ -75,12 +75,6 @@ static int __init wf_cpufreq_clamp_init(void) { struct wf_control *clamp; - /* Don't register on old machines that use therm_pm72 for now */ - if (of_machine_is_compatible("PowerMac7,2") || - of_machine_is_compatible("PowerMac7,3") || - of_machine_is_compatible("RackMac3,1")) - return -ENODEV; - clamp = kmalloc(sizeof(struct wf_control), GFP_KERNEL); if (clamp == NULL) return -ENOMEM; diff --git a/drivers/macintosh/windfarm_fcu_controls.c b/drivers/macintosh/windfarm_fcu_controls.c new file mode 100644 index 000000000000..b3411edb324b --- /dev/null +++ b/drivers/macintosh/windfarm_fcu_controls.c @@ -0,0 +1,613 @@ +/* + * Windfarm PowerMac thermal control. FCU fan control + * + * Copyright 2012 Benjamin Herrenschmidt, IBM Corp. + * + * Released under the term of the GNU GPL v2. + */ +#undef DEBUG + +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/wait.h> +#include <linux/i2c.h> +#include <asm/prom.h> +#include <asm/machdep.h> +#include <asm/io.h> +#include <asm/sections.h> + +#include "windfarm.h" +#include "windfarm_mpu.h" + +#define VERSION "1.0" + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +/* + * This option is "weird" :) Basically, if you define this to 1 + * the control loop for the RPMs fans (not PWMs) will apply the + * correction factor obtained from the PID to the actual RPM + * speed read from the FCU. + * + * If you define the below constant to 0, then it will be + * applied to the setpoint RPM speed, that is basically the + * speed we proviously "asked" for. + * + * I'm using 0 for now which is what therm_pm72 used to do and + * what Darwin -apparently- does based on observed behaviour. + */ +#define RPM_PID_USE_ACTUAL_SPEED 0 + +/* Default min/max for pumps */ +#define CPU_PUMP_OUTPUT_MAX 3200 +#define CPU_PUMP_OUTPUT_MIN 1250 + +#define FCU_FAN_RPM 0 +#define FCU_FAN_PWM 1 + +struct wf_fcu_priv { + struct kref ref; + struct i2c_client *i2c; + struct mutex lock; + struct list_head fan_list; + int rpm_shift; +}; + +struct wf_fcu_fan { + struct list_head link; + int id; + s32 min, max, target; + struct wf_fcu_priv *fcu_priv; + struct wf_control ctrl; +}; + +static void wf_fcu_release(struct kref *ref) +{ + struct wf_fcu_priv *pv = container_of(ref, struct wf_fcu_priv, ref); + + kfree(pv); +} + +static void wf_fcu_fan_release(struct wf_control *ct) +{ + struct wf_fcu_fan *fan = ct->priv; + + kref_put(&fan->fcu_priv->ref, wf_fcu_release); + kfree(fan); +} + +static int wf_fcu_read_reg(struct wf_fcu_priv *pv, int reg, + unsigned char *buf, int nb) +{ + int tries, nr, nw; + + mutex_lock(&pv->lock); + + buf[0] = reg; + tries = 0; + for (;;) { + nw = i2c_master_send(pv->i2c, buf, 1); + if (nw > 0 || (nw < 0 && nw != -EIO) || tries >= 100) + break; + msleep(10); + ++tries; + } + if (nw <= 0) { + pr_err("Failure writing address to FCU: %d", nw); + nr = nw; + goto bail; + } + tries = 0; + for (;;) { + nr = i2c_master_recv(pv->i2c, buf, nb); + if (nr > 0 || (nr < 0 && nr != -ENODEV) || tries >= 100) + break; + msleep(10); + ++tries; + } + if (nr <= 0) + pr_err("wf_fcu: Failure reading data from FCU: %d", nw); + bail: + mutex_unlock(&pv->lock); + return nr; +} + +static int wf_fcu_write_reg(struct wf_fcu_priv *pv, int reg, + const unsigned char *ptr, int nb) +{ + int tries, nw; + unsigned char buf[16]; + + buf[0] = reg; + memcpy(buf+1, ptr, nb); + ++nb; + tries = 0; + for (;;) { + nw = i2c_master_send(pv->i2c, buf, nb); + if (nw > 0 || (nw < 0 && nw != -EIO) || tries >= 100) + break; + msleep(10); + ++tries; + } + if (nw < 0) + pr_err("wf_fcu: Failure writing to FCU: %d", nw); + return nw; +} + +static int wf_fcu_fan_set_rpm(struct wf_control *ct, s32 value) +{ + struct wf_fcu_fan *fan = ct->priv; + struct wf_fcu_priv *pv = fan->fcu_priv; + int rc, shift = pv->rpm_shift; + unsigned char buf[2]; + + if (value < fan->min) + value = fan->min; + if (value > fan->max) + value = fan->max; + + fan->target = value; + + buf[0] = value >> (8 - shift); + buf[1] = value << shift; + rc = wf_fcu_write_reg(pv, 0x10 + (fan->id * 2), buf, 2); + if (rc < 0) + return -EIO; + return 0; +} + +static int wf_fcu_fan_get_rpm(struct wf_control *ct, s32 *value) +{ + struct wf_fcu_fan *fan = ct->priv; + struct wf_fcu_priv *pv = fan->fcu_priv; + int rc, reg_base, shift = pv->rpm_shift; + unsigned char failure; + unsigned char active; + unsigned char buf[2]; + + rc = wf_fcu_read_reg(pv, 0xb, &failure, 1); + if (rc != 1) + return -EIO; + if ((failure & (1 << fan->id)) != 0) + return -EFAULT; + rc = wf_fcu_read_reg(pv, 0xd, &active, 1); + if (rc != 1) + return -EIO; + if ((active & (1 << fan->id)) == 0) + return -ENXIO; + + /* Programmed value or real current speed */ +#if RPM_PID_USE_ACTUAL_SPEED + reg_base = 0x11; +#else + reg_base = 0x10; +#endif + rc = wf_fcu_read_reg(pv, reg_base + (fan->id * 2), buf, 2); + if (rc != 2) + return -EIO; + + *value = (buf[0] << (8 - shift)) | buf[1] >> shift; + + return 0; +} + +static int wf_fcu_fan_set_pwm(struct wf_control *ct, s32 value) +{ + struct wf_fcu_fan *fan = ct->priv; + struct wf_fcu_priv *pv = fan->fcu_priv; + unsigned char buf[2]; + int rc; + + if (value < fan->min) + value = fan->min; + if (value > fan->max) + value = fan->max; + + fan->target = value; + + value = (value * 2559) / 1000; + buf[0] = value; + rc = wf_fcu_write_reg(pv, 0x30 + (fan->id * 2), buf, 1); + if (rc < 0) + return -EIO; + return 0; +} + +static int wf_fcu_fan_get_pwm(struct wf_control *ct, s32 *value) +{ + struct wf_fcu_fan *fan = ct->priv; + struct wf_fcu_priv *pv = fan->fcu_priv; + unsigned char failure; + unsigned char active; + unsigned char buf[2]; + int rc; + + rc = wf_fcu_read_reg(pv, 0x2b, &failure, 1); + if (rc != 1) + return -EIO; + if ((failure & (1 << fan->id)) != 0) + return -EFAULT; + rc = wf_fcu_read_reg(pv, 0x2d, &active, 1); + if (rc != 1) + return -EIO; + if ((active & (1 << fan->id)) == 0) + return -ENXIO; + + rc = wf_fcu_read_reg(pv, 0x30 + (fan->id * 2), buf, 1); + if (rc != 1) + return -EIO; + + *value = (((s32)buf[0]) * 1000) / 2559; + + return 0; +} + +static s32 wf_fcu_fan_min(struct wf_control *ct) +{ + struct wf_fcu_fan *fan = ct->priv; + + return fan->min; +} + +static s32 wf_fcu_fan_max(struct wf_control *ct) +{ + struct wf_fcu_fan *fan = ct->priv; + + return fan->max; +} + +static const struct wf_control_ops wf_fcu_fan_rpm_ops = { + .set_value = wf_fcu_fan_set_rpm, + .get_value = wf_fcu_fan_get_rpm, + .get_min = wf_fcu_fan_min, + .get_max = wf_fcu_fan_max, + .release = wf_fcu_fan_release, + .owner = THIS_MODULE, +}; + +static const struct wf_control_ops wf_fcu_fan_pwm_ops = { + .set_value = wf_fcu_fan_set_pwm, + .get_value = wf_fcu_fan_get_pwm, + .get_min = wf_fcu_fan_min, + .get_max = wf_fcu_fan_max, + .release = wf_fcu_fan_release, + .owner = THIS_MODULE, +}; + +static void __devinit wf_fcu_get_pump_minmax(struct wf_fcu_fan *fan) +{ + const struct mpu_data *mpu = wf_get_mpu(0); + u16 pump_min = 0, pump_max = 0xffff; + u16 tmp[4]; + + /* Try to fetch pumps min/max infos from eeprom */ + if (mpu) { + memcpy(&tmp, mpu->processor_part_num, 8); + if (tmp[0] != 0xffff && tmp[1] != 0xffff) { + pump_min = max(pump_min, tmp[0]); + pump_max = min(pump_max, tmp[1]); + } + if (tmp[2] != 0xffff && tmp[3] != 0xffff) { + pump_min = max(pump_min, tmp[2]); + pump_max = min(pump_max, tmp[3]); + } + } + + /* Double check the values, this _IS_ needed as the EEPROM on + * some dual 2.5Ghz G5s seem, at least, to have both min & max + * same to the same value ... (grrrr) + */ + if (pump_min == pump_max || pump_min == 0 || pump_max == 0xffff) { + pump_min = CPU_PUMP_OUTPUT_MIN; + pump_max = CPU_PUMP_OUTPUT_MAX; + } + + fan->min = pump_min; + fan->max = pump_max; + + DBG("wf_fcu: pump min/max for %s set to: [%d..%d] RPM\n", + fan->ctrl.name, pump_min, pump_max); +} + +static void __devinit wf_fcu_get_rpmfan_minmax(struct wf_fcu_fan *fan) +{ + struct wf_fcu_priv *pv = fan->fcu_priv; + const struct mpu_data *mpu0 = wf_get_mpu(0); + const struct mpu_data *mpu1 = wf_get_mpu(1); + + /* Default */ + fan->min = 2400 >> pv->rpm_shift; + fan->max = 56000 >> pv->rpm_shift; + + /* CPU fans have min/max in MPU */ + if (mpu0 && !strcmp(fan->ctrl.name, "cpu-front-fan-0")) { + fan->min = max(fan->min, (s32)mpu0->rminn_intake_fan); + fan->max = min(fan->max, (s32)mpu0->rmaxn_intake_fan); + goto bail; + } + if (mpu1 && !strcmp(fan->ctrl.name, "cpu-front-fan-1")) { + fan->min = max(fan->min, (s32)mpu1->rminn_intake_fan); + fan->max = min(fan->max, (s32)mpu1->rmaxn_intake_fan); + goto bail; + } + if (mpu0 && !strcmp(fan->ctrl.name, "cpu-rear-fan-0")) { + fan->min = max(fan->min, (s32)mpu0->rminn_exhaust_fan); + fan->max = min(fan->max, (s32)mpu0->rmaxn_exhaust_fan); + goto bail; + } + if (mpu1 && !strcmp(fan->ctrl.name, "cpu-rear-fan-1")) { + fan->min = max(fan->min, (s32)mpu1->rminn_exhaust_fan); + fan->max = min(fan->max, (s32)mpu1->rmaxn_exhaust_fan); + goto bail; + } + /* Rackmac variants, we just use mpu0 intake */ + if (!strncmp(fan->ctrl.name, "cpu-fan", 7)) { + fan->min = max(fan->min, (s32)mpu0->rminn_intake_fan); + fan->max = min(fan->max, (s32)mpu0->rmaxn_intake_fan); + goto bail; + } + bail: + DBG("wf_fcu: fan min/max for %s set to: [%d..%d] RPM\n", + fan->ctrl.name, fan->min, fan->max); +} + +static void __devinit wf_fcu_add_fan(struct wf_fcu_priv *pv, + const char *name, + int type, int id) +{ + struct wf_fcu_fan *fan; + + fan = kzalloc(sizeof(*fan), GFP_KERNEL); + if (!fan) + return; + fan->fcu_priv = pv; + fan->id = id; + fan->ctrl.name = name; + fan->ctrl.priv = fan; + + /* min/max is oddball but the code comes from + * therm_pm72 which seems to work so ... + */ + if (type == FCU_FAN_RPM) { + if (!strncmp(name, "cpu-pump", strlen("cpu-pump"))) + wf_fcu_get_pump_minmax(fan); + else + wf_fcu_get_rpmfan_minmax(fan); + fan->ctrl.type = WF_CONTROL_RPM_FAN; + fan->ctrl.ops = &wf_fcu_fan_rpm_ops; + } else { + fan->min = 10; + fan->max = 100; + fan->ctrl.type = WF_CONTROL_PWM_FAN; + fan->ctrl.ops = &wf_fcu_fan_pwm_ops; + } + + if (wf_register_control(&fan->ctrl)) { + pr_err("wf_fcu: Failed to register fan %s\n", name); + kfree(fan); + return; + } + list_add(&fan->link, &pv->fan_list); + kref_get(&pv->ref); +} + +static void __devinit wf_fcu_lookup_fans(struct wf_fcu_priv *pv) +{ + /* Translation of device-tree location properties to + * windfarm fan names + */ + static const struct { + const char *dt_name; /* Device-tree name */ + const char *ct_name; /* Control name */ + } loc_trans[] = { + { "BACKSIDE", "backside-fan", }, + { "SYS CTRLR FAN", "backside-fan", }, + { "DRIVE BAY", "drive-bay-fan", }, + { "SLOT", "slots-fan", }, + { "PCI FAN", "slots-fan", }, + { "CPU A INTAKE", "cpu-front-fan-0", }, + { "CPU A EXHAUST", "cpu-rear-fan-0", }, + { "CPU B INTAKE", "cpu-front-fan-1", }, + { "CPU B EXHAUST", "cpu-rear-fan-1", }, + { "CPU A PUMP", "cpu-pump-0", }, + { "CPU B PUMP", "cpu-pump-1", }, + { "CPU A 1", "cpu-fan-a-0", }, + { "CPU A 2", "cpu-fan-b-0", }, + { "CPU A 3", "cpu-fan-c-0", }, + { "CPU B 1", "cpu-fan-a-1", }, + { "CPU B 2", "cpu-fan-b-1", }, + { "CPU B 3", "cpu-fan-c-1", }, + }; + struct device_node *np = NULL, *fcu = pv->i2c->dev.of_node; + int i; + + DBG("Looking up FCU controls in device-tree...\n"); + + while ((np = of_get_next_child(fcu, np)) != NULL) { + int id, type = -1; + const char *loc; + const char *name; + const u32 *reg; + + DBG(" control: %s, type: %s\n", np->name, np->type); + + /* Detect control type */ + if (!strcmp(np->type, "fan-rpm-control") || + !strcmp(np->type, "fan-rpm")) + type = FCU_FAN_RPM; + if (!strcmp(np->type, "fan-pwm-control") || + !strcmp(np->type, "fan-pwm")) + type = FCU_FAN_PWM; + /* Only care about fans for now */ + if (type == -1) + continue; + + /* Lookup for a matching location */ + loc = of_get_property(np, "location", NULL); + reg = of_get_property(np, "reg", NULL); + if (loc == NULL || reg == NULL) + continue; + DBG(" matching location: %s, reg: 0x%08x\n", loc, *reg); + + for (i = 0; i < ARRAY_SIZE(loc_trans); i++) { + if (strncmp(loc, loc_trans[i].dt_name, + strlen(loc_trans[i].dt_name))) + continue; + name = loc_trans[i].ct_name; + + DBG(" location match, name: %s\n", name); + + if (type == FCU_FAN_RPM) + id = ((*reg) - 0x10) / 2; + else + id = ((*reg) - 0x30) / 2; + if (id > 7) { + pr_warning("wf_fcu: Can't parse " + "fan ID in device-tree for %s\n", + np->full_name); + break; + } + wf_fcu_add_fan(pv, name, type, id); + break; + } + } +} + +static void __devinit wf_fcu_default_fans(struct wf_fcu_priv *pv) +{ + /* We only support the default fans for PowerMac7,2 */ + if (!of_machine_is_compatible("PowerMac7,2")) + return; + + wf_fcu_add_fan(pv, "backside-fan", FCU_FAN_PWM, 1); + wf_fcu_add_fan(pv, "drive-bay-fan", FCU_FAN_RPM, 2); + wf_fcu_add_fan(pv, "slots-fan", FCU_FAN_PWM, 2); + wf_fcu_add_fan(pv, "cpu-front-fan-0", FCU_FAN_RPM, 3); + wf_fcu_add_fan(pv, "cpu-rear-fan-0", FCU_FAN_RPM, 4); + wf_fcu_add_fan(pv, "cpu-front-fan-1", FCU_FAN_RPM, 5); + wf_fcu_add_fan(pv, "cpu-rear-fan-1", FCU_FAN_RPM, 6); +} + +static int __devinit wf_fcu_init_chip(struct wf_fcu_priv *pv) +{ + unsigned char buf = 0xff; + int rc; + + rc = wf_fcu_write_reg(pv, 0xe, &buf, 1); + if (rc < 0) + return -EIO; + rc = wf_fcu_write_reg(pv, 0x2e, &buf, 1); + if (rc < 0) + return -EIO; + rc = wf_fcu_read_reg(pv, 0, &buf, 1); + if (rc < 0) + return -EIO; + pv->rpm_shift = (buf == 1) ? 2 : 3; + + pr_debug("wf_fcu: FCU Initialized, RPM fan shift is %d\n", + pv->rpm_shift); + + return 0; +} + +static int __devinit wf_fcu_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct wf_fcu_priv *pv; + + pv = kzalloc(sizeof(*pv), GFP_KERNEL); + if (!pv) + return -ENOMEM; + + kref_init(&pv->ref); + mutex_init(&pv->lock); + INIT_LIST_HEAD(&pv->fan_list); + pv->i2c = client; + + /* + * First we must start the FCU which will query the + * shift value to apply to RPMs + */ + if (wf_fcu_init_chip(pv)) { + pr_err("wf_fcu: Initialization failed !\n"); + kfree(pv); + return -ENXIO; + } + + /* First lookup fans in the device-tree */ + wf_fcu_lookup_fans(pv); + + /* + * Older machines don't have the device-tree entries + * we are looking for, just hard code the list + */ + if (list_empty(&pv->fan_list)) + wf_fcu_default_fans(pv); + + /* Still no fans ? FAIL */ + if (list_empty(&pv->fan_list)) { + pr_err("wf_fcu: Failed to find fans for your machine\n"); + kfree(pv); + return -ENODEV; + } + + dev_set_drvdata(&client->dev, pv); + + return 0; +} + +static int __devexit wf_fcu_remove(struct i2c_client *client) +{ + struct wf_fcu_priv *pv = dev_get_drvdata(&client->dev); + struct wf_fcu_fan *fan; + + while (!list_empty(&pv->fan_list)) { + fan = list_first_entry(&pv->fan_list, struct wf_fcu_fan, link); + list_del(&fan->link); + wf_unregister_control(&fan->ctrl); + } + kref_put(&pv->ref, wf_fcu_release); + return 0; +} + +static const struct i2c_device_id wf_fcu_id[] = { + { "MAC,fcu", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, wf_fcu_id); + +static struct i2c_driver wf_fcu_driver = { + .driver = { + .name = "wf_fcu", + }, + .probe = wf_fcu_probe, + .remove = wf_fcu_remove, + .id_table = wf_fcu_id, +}; + +static int __init wf_fcu_init(void) +{ + return i2c_add_driver(&wf_fcu_driver); +} + +static void __exit wf_fcu_exit(void) +{ + i2c_del_driver(&wf_fcu_driver); +} + + +module_init(wf_fcu_init); +module_exit(wf_fcu_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>"); +MODULE_DESCRIPTION("FCU control objects for PowerMacs thermal control"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/macintosh/windfarm_lm75_sensor.c b/drivers/macintosh/windfarm_lm75_sensor.c index 4d6a90a1372b..b0c2d3695b34 100644 --- a/drivers/macintosh/windfarm_lm75_sensor.c +++ b/drivers/macintosh/windfarm_lm75_sensor.c @@ -23,7 +23,7 @@ #include "windfarm.h" -#define VERSION "0.2" +#define VERSION "1.0" #undef DEBUG @@ -36,8 +36,8 @@ struct wf_lm75_sensor { int ds1775 : 1; int inited : 1; - struct i2c_client *i2c; - struct wf_sensor sens; + struct i2c_client *i2c; + struct wf_sensor sens; }; #define wf_to_lm75(c) container_of(c, struct wf_lm75_sensor, sens) @@ -90,40 +90,19 @@ static struct wf_sensor_ops wf_lm75_ops = { static int wf_lm75_probe(struct i2c_client *client, const struct i2c_device_id *id) -{ +{ struct wf_lm75_sensor *lm; - int rc; - - lm = kzalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL); - if (lm == NULL) - return -ENODEV; - - lm->inited = 0; - lm->ds1775 = id->driver_data; - lm->i2c = client; - lm->sens.name = client->dev.platform_data; - lm->sens.ops = &wf_lm75_ops; - i2c_set_clientdata(client, lm); - - rc = wf_register_sensor(&lm->sens); - if (rc) - kfree(lm); - - return rc; -} - -static struct i2c_driver wf_lm75_driver; - -static struct i2c_client *wf_lm75_create(struct i2c_adapter *adapter, - u8 addr, int ds1775, - const char *loc) -{ - struct i2c_board_info info; - struct i2c_client *client; - char *name; + int rc, ds1775 = id->driver_data; + const char *name, *loc; DBG("wf_lm75: creating %s device at address 0x%02x\n", - ds1775 ? "ds1775" : "lm75", addr); + ds1775 ? "ds1775" : "lm75", client->addr); + + loc = of_get_property(client->dev.of_node, "hwsensor-location", NULL); + if (!loc) { + dev_warn(&client->dev, "Missing hwsensor-location property!\n"); + return -ENXIO; + } /* Usual rant about sensor names not beeing very consistent in * the device-tree, oh well ... @@ -137,68 +116,31 @@ static struct i2c_client *wf_lm75_create(struct i2c_adapter *adapter, name = "optical-drive-temp"; else if (!strcmp(loc, "HD Temp")) name = "hard-drive-temp"; + else if (!strcmp(loc, "PCI SLOTS")) + name = "slots-temp"; + else if (!strcmp(loc, "CPU A INLET")) + name = "cpu-inlet-temp-0"; + else if (!strcmp(loc, "CPU B INLET")) + name = "cpu-inlet-temp-1"; else - goto fail; - - memset(&info, 0, sizeof(struct i2c_board_info)); - info.addr = (addr >> 1) & 0x7f; - info.platform_data = name; - strlcpy(info.type, ds1775 ? "wf_ds1775" : "wf_lm75", I2C_NAME_SIZE); - - client = i2c_new_device(adapter, &info); - if (client == NULL) { - printk(KERN_ERR "windfarm: failed to attach %s %s to i2c\n", - ds1775 ? "ds1775" : "lm75", name); - goto fail; - } - - /* - * Let i2c-core delete that device on driver removal. - * This is safe because i2c-core holds the core_lock mutex for us. - */ - list_add_tail(&client->detected, &wf_lm75_driver.clients); - return client; - fail: - return NULL; -} - -static int wf_lm75_attach(struct i2c_adapter *adapter) -{ - struct device_node *busnode, *dev; - struct pmac_i2c_bus *bus; + return -ENXIO; + - DBG("wf_lm75: adapter %s detected\n", adapter->name); - - bus = pmac_i2c_adapter_to_bus(adapter); - if (bus == NULL) + lm = kzalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL); + if (lm == NULL) return -ENODEV; - busnode = pmac_i2c_get_bus_node(bus); - DBG("wf_lm75: bus found, looking for device...\n"); - - /* Now look for lm75(s) in there */ - for (dev = NULL; - (dev = of_get_next_child(busnode, dev)) != NULL;) { - const char *loc = - of_get_property(dev, "hwsensor-location", NULL); - u8 addr; + lm->inited = 0; + lm->ds1775 = ds1775; + lm->i2c = client; + lm->sens.name = (char *)name; /* XXX fix constness in structure */ + lm->sens.ops = &wf_lm75_ops; + i2c_set_clientdata(client, lm); - /* We must re-match the adapter in order to properly check - * the channel on multibus setups - */ - if (!pmac_i2c_match_adapter(dev, adapter)) - continue; - addr = pmac_i2c_get_dev_addr(dev); - if (loc == NULL || addr == 0) - continue; - /* real lm75 */ - if (of_device_is_compatible(dev, "lm75")) - wf_lm75_create(adapter, addr, 0, loc); - /* ds1775 (compatible, better resolution */ - else if (of_device_is_compatible(dev, "ds1775")) - wf_lm75_create(adapter, addr, 1, loc); - } - return 0; + rc = wf_register_sensor(&lm->sens); + if (rc) + kfree(lm); + return rc; } static int wf_lm75_remove(struct i2c_client *client) @@ -217,16 +159,16 @@ static int wf_lm75_remove(struct i2c_client *client) } static const struct i2c_device_id wf_lm75_id[] = { - { "wf_lm75", 0 }, - { "wf_ds1775", 1 }, + { "MAC,lm75", 0 }, + { "MAC,ds1775", 1 }, { } }; +MODULE_DEVICE_TABLE(i2c, wf_lm75_id); static struct i2c_driver wf_lm75_driver = { .driver = { .name = "wf_lm75", }, - .attach_adapter = wf_lm75_attach, .probe = wf_lm75_probe, .remove = wf_lm75_remove, .id_table = wf_lm75_id, @@ -234,11 +176,6 @@ static struct i2c_driver wf_lm75_driver = { static int __init wf_lm75_sensor_init(void) { - /* Don't register on old machines that use therm_pm72 for now */ - if (of_machine_is_compatible("PowerMac7,2") || - of_machine_is_compatible("PowerMac7,3") || - of_machine_is_compatible("RackMac3,1")) - return -ENODEV; return i2c_add_driver(&wf_lm75_driver); } diff --git a/drivers/macintosh/windfarm_lm87_sensor.c b/drivers/macintosh/windfarm_lm87_sensor.c new file mode 100644 index 000000000000..c071aab79dd1 --- /dev/null +++ b/drivers/macintosh/windfarm_lm87_sensor.c @@ -0,0 +1,201 @@ +/* + * Windfarm PowerMac thermal control. LM87 sensor + * + * Copyright 2012 Benjamin Herrenschmidt, IBM Corp. + * + * Released under the term of the GNU GPL v2. + * + */ + +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/wait.h> +#include <linux/i2c.h> +#include <asm/prom.h> +#include <asm/machdep.h> +#include <asm/io.h> +#include <asm/sections.h> +#include <asm/pmac_low_i2c.h> + +#include "windfarm.h" + +#define VERSION "1.0" + +#undef DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +struct wf_lm87_sensor { + struct i2c_client *i2c; + struct wf_sensor sens; +}; +#define wf_to_lm87(c) container_of(c, struct wf_lm87_sensor, sens) + + +static int wf_lm87_read_reg(struct i2c_client *chip, int reg) +{ + int rc, tries = 0; + u8 buf; + + for (;;) { + /* Set address */ + buf = (u8)reg; + rc = i2c_master_send(chip, &buf, 1); + if (rc <= 0) + goto error; + rc = i2c_master_recv(chip, &buf, 1); + if (rc <= 0) + goto error; + return (int)buf; + error: + DBG("wf_lm87: Error reading LM87, retrying...\n"); + if (++tries > 10) { + printk(KERN_ERR "wf_lm87: Error reading LM87 !\n"); + return -EIO; + } + msleep(10); + } +} + +static int wf_lm87_get(struct wf_sensor *sr, s32 *value) +{ + struct wf_lm87_sensor *lm = sr->priv; + s32 temp; + + if (lm->i2c == NULL) + return -ENODEV; + +#define LM87_INT_TEMP 0x27 + + /* Read temperature register */ + temp = wf_lm87_read_reg(lm->i2c, LM87_INT_TEMP); + if (temp < 0) + return temp; + *value = temp << 16; + + return 0; +} + +static void wf_lm87_release(struct wf_sensor *sr) +{ + struct wf_lm87_sensor *lm = wf_to_lm87(sr); + + kfree(lm); +} + +static struct wf_sensor_ops wf_lm87_ops = { + .get_value = wf_lm87_get, + .release = wf_lm87_release, + .owner = THIS_MODULE, +}; + +static int wf_lm87_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct wf_lm87_sensor *lm; + const char *name = NULL, *loc; + struct device_node *np = NULL; + int rc; + + /* + * The lm87 contains a whole pile of sensors, additionally, + * the Xserve G5 has several lm87's. However, for now we only + * care about the internal temperature sensor + */ + while ((np = of_get_next_child(client->dev.of_node, np)) != NULL) { + if (strcmp(np->name, "int-temp")) + continue; + loc = of_get_property(np, "location", NULL); + if (!loc) + continue; + if (strstr(loc, "DIMM")) + name = "dimms-temp"; + else if (strstr(loc, "Processors")) + name = "between-cpus-temp"; + if (name) { + of_node_put(np); + break; + } + } + if (!name) { + pr_warning("wf_lm87: Unsupported sensor %s\n", + client->dev.of_node->full_name); + return -ENODEV; + } + + lm = kzalloc(sizeof(struct wf_lm87_sensor), GFP_KERNEL); + if (lm == NULL) + return -ENODEV; + + lm->i2c = client; + lm->sens.name = name; + lm->sens.ops = &wf_lm87_ops; + lm->sens.priv = lm; + i2c_set_clientdata(client, lm); + + rc = wf_register_sensor(&lm->sens); + if (rc) + kfree(lm); + return rc; +} + +static int wf_lm87_remove(struct i2c_client *client) +{ + struct wf_lm87_sensor *lm = i2c_get_clientdata(client); + + DBG("wf_lm87: i2c detatch called for %s\n", lm->sens.name); + + /* Mark client detached */ + lm->i2c = NULL; + + /* release sensor */ + wf_unregister_sensor(&lm->sens); + + return 0; +} + +static const struct i2c_device_id wf_lm87_id[] = { + { "MAC,lm87cimt", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, wf_lm87_id); + +static struct i2c_driver wf_lm87_driver = { + .driver = { + .name = "wf_lm87", + }, + .probe = wf_lm87_probe, + .remove = wf_lm87_remove, + .id_table = wf_lm87_id, +}; + +static int __init wf_lm87_sensor_init(void) +{ + /* We only support this on the Xserve */ + if (!of_machine_is_compatible("RackMac3,1")) + return -ENODEV; + + return i2c_add_driver(&wf_lm87_driver); +} + +static void __exit wf_lm87_sensor_exit(void) +{ + i2c_del_driver(&wf_lm87_driver); +} + + +module_init(wf_lm87_sensor_init); +module_exit(wf_lm87_sensor_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>"); +MODULE_DESCRIPTION("LM87 sensor objects for PowerMacs thermal control"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/macintosh/windfarm_max6690_sensor.c b/drivers/macintosh/windfarm_max6690_sensor.c index 8204113268f4..371b058d2f7d 100644 --- a/drivers/macintosh/windfarm_max6690_sensor.c +++ b/drivers/macintosh/windfarm_max6690_sensor.c @@ -16,7 +16,7 @@ #include "windfarm.h" -#define VERSION "0.2" +#define VERSION "1.0" /* This currently only exports the external temperature sensor, since that's all the control loops need. */ @@ -64,9 +64,29 @@ static struct wf_sensor_ops wf_max6690_ops = { static int wf_max6690_probe(struct i2c_client *client, const struct i2c_device_id *id) { + const char *name, *loc; struct wf_6690_sensor *max; int rc; + loc = of_get_property(client->dev.of_node, "hwsensor-location", NULL); + if (!loc) { + dev_warn(&client->dev, "Missing hwsensor-location property!\n"); + return -ENXIO; + } + + /* + * We only expose the external temperature register for + * now as this is all we need for our control loops + */ + if (!strcmp(loc, "BACKSIDE") || !strcmp(loc, "SYS CTRLR AMBIENT")) + name = "backside-temp"; + else if (!strcmp(loc, "NB Ambient")) + name = "north-bridge-temp"; + else if (!strcmp(loc, "GPU Ambient")) + name = "gpu-temp"; + else + return -ENXIO; + max = kzalloc(sizeof(struct wf_6690_sensor), GFP_KERNEL); if (max == NULL) { printk(KERN_ERR "windfarm: Couldn't create MAX6690 sensor: " @@ -75,90 +95,16 @@ static int wf_max6690_probe(struct i2c_client *client, } max->i2c = client; - max->sens.name = client->dev.platform_data; + max->sens.name = (char *)name; /* XXX fix constness in structure */ max->sens.ops = &wf_max6690_ops; i2c_set_clientdata(client, max); rc = wf_register_sensor(&max->sens); - if (rc) { + if (rc) kfree(max); - } - return rc; } -static struct i2c_driver wf_max6690_driver; - -static struct i2c_client *wf_max6690_create(struct i2c_adapter *adapter, - u8 addr, const char *loc) -{ - struct i2c_board_info info; - struct i2c_client *client; - char *name; - - if (!strcmp(loc, "BACKSIDE")) - name = "backside-temp"; - else if (!strcmp(loc, "NB Ambient")) - name = "north-bridge-temp"; - else if (!strcmp(loc, "GPU Ambient")) - name = "gpu-temp"; - else - goto fail; - - memset(&info, 0, sizeof(struct i2c_board_info)); - info.addr = addr >> 1; - info.platform_data = name; - strlcpy(info.type, "wf_max6690", I2C_NAME_SIZE); - - client = i2c_new_device(adapter, &info); - if (client == NULL) { - printk(KERN_ERR "windfarm: failed to attach MAX6690 sensor\n"); - goto fail; - } - - /* - * Let i2c-core delete that device on driver removal. - * This is safe because i2c-core holds the core_lock mutex for us. - */ - list_add_tail(&client->detected, &wf_max6690_driver.clients); - return client; - - fail: - return NULL; -} - -static int wf_max6690_attach(struct i2c_adapter *adapter) -{ - struct device_node *busnode, *dev = NULL; - struct pmac_i2c_bus *bus; - const char *loc; - - bus = pmac_i2c_adapter_to_bus(adapter); - if (bus == NULL) - return -ENODEV; - busnode = pmac_i2c_get_bus_node(bus); - - while ((dev = of_get_next_child(busnode, dev)) != NULL) { - u8 addr; - - /* We must re-match the adapter in order to properly check - * the channel on multibus setups - */ - if (!pmac_i2c_match_adapter(dev, adapter)) - continue; - if (!of_device_is_compatible(dev, "max6690")) - continue; - addr = pmac_i2c_get_dev_addr(dev); - loc = of_get_property(dev, "hwsensor-location", NULL); - if (loc == NULL || addr == 0) - continue; - printk("found max6690, loc=%s addr=0x%02x\n", loc, addr); - wf_max6690_create(adapter, addr, loc); - } - - return 0; -} - static int wf_max6690_remove(struct i2c_client *client) { struct wf_6690_sensor *max = i2c_get_clientdata(client); @@ -170,15 +116,15 @@ static int wf_max6690_remove(struct i2c_client *client) } static const struct i2c_device_id wf_max6690_id[] = { - { "wf_max6690", 0 }, + { "MAC,max6690", 0 }, { } }; +MODULE_DEVICE_TABLE(i2c, wf_max6690_id); static struct i2c_driver wf_max6690_driver = { .driver = { .name = "wf_max6690", }, - .attach_adapter = wf_max6690_attach, .probe = wf_max6690_probe, .remove = wf_max6690_remove, .id_table = wf_max6690_id, @@ -186,11 +132,6 @@ static struct i2c_driver wf_max6690_driver = { static int __init wf_max6690_sensor_init(void) { - /* Don't register on old machines that use therm_pm72 for now */ - if (of_machine_is_compatible("PowerMac7,2") || - of_machine_is_compatible("PowerMac7,3") || - of_machine_is_compatible("RackMac3,1")) - return -ENODEV; return i2c_add_driver(&wf_max6690_driver); } diff --git a/drivers/macintosh/windfarm_mpu.h b/drivers/macintosh/windfarm_mpu.h new file mode 100644 index 000000000000..046edc8c2ec5 --- /dev/null +++ b/drivers/macintosh/windfarm_mpu.h @@ -0,0 +1,105 @@ +/* + * Windfarm PowerMac thermal control + * + * Copyright 2012 Benjamin Herrenschmidt, IBM Corp. + * + * Released under the term of the GNU GPL v2. + */ + +#ifndef __WINDFARM_MPU_H +#define __WINDFARM_MPU_H + +typedef unsigned short fu16; +typedef int fs32; +typedef short fs16; + +/* Definition of the MPU data structure which contains per CPU + * calibration information (among others) for the G5 machines + */ +struct mpu_data +{ + u8 signature; /* 0x00 - EEPROM sig. */ + u8 bytes_used; /* 0x01 - Bytes used in eeprom (160 ?) */ + u8 size; /* 0x02 - EEPROM size (256 ?) */ + u8 version; /* 0x03 - EEPROM version */ + u32 data_revision; /* 0x04 - Dataset revision */ + u8 processor_bin_code[3]; /* 0x08 - Processor BIN code */ + u8 bin_code_expansion; /* 0x0b - ??? (padding ?) */ + u8 processor_num; /* 0x0c - Number of CPUs on this MPU */ + u8 input_mul_bus_div; /* 0x0d - Clock input multiplier/bus divider */ + u8 reserved1[2]; /* 0x0e - */ + u32 input_clk_freq_high; /* 0x10 - Input clock frequency high */ + u8 cpu_nb_target_cycles; /* 0x14 - ??? */ + u8 cpu_statlat; /* 0x15 - ??? */ + u8 cpu_snooplat; /* 0x16 - ??? */ + u8 cpu_snoopacc; /* 0x17 - ??? */ + u8 nb_paamwin; /* 0x18 - ??? */ + u8 nb_statlat; /* 0x19 - ??? */ + u8 nb_snooplat; /* 0x1a - ??? */ + u8 nb_snoopwin; /* 0x1b - ??? */ + u8 api_bus_mode; /* 0x1c - ??? */ + u8 reserved2[3]; /* 0x1d - */ + u32 input_clk_freq_low; /* 0x20 - Input clock frequency low */ + u8 processor_card_slot; /* 0x24 - Processor card slot number */ + u8 reserved3[2]; /* 0x25 - */ + u8 padjmax; /* 0x27 - Max power adjustment (Not in OF!) */ + u8 ttarget; /* 0x28 - Target temperature */ + u8 tmax; /* 0x29 - Max temperature */ + u8 pmaxh; /* 0x2a - Max power */ + u8 tguardband; /* 0x2b - Guardband temp ??? Hist. len in OSX */ + fs32 pid_gp; /* 0x2c - PID proportional gain */ + fs32 pid_gr; /* 0x30 - PID reset gain */ + fs32 pid_gd; /* 0x34 - PID derivative gain */ + fu16 voph; /* 0x38 - Vop High */ + fu16 vopl; /* 0x3a - Vop Low */ + fs16 nactual_die; /* 0x3c - nActual Die */ + fs16 nactual_heatsink; /* 0x3e - nActual Heatsink */ + fs16 nactual_system; /* 0x40 - nActual System */ + u16 calibration_flags; /* 0x42 - Calibration flags */ + fu16 mdiode; /* 0x44 - Diode M value (scaling factor) */ + fs16 bdiode; /* 0x46 - Diode B value (offset) */ + fs32 theta_heat_sink; /* 0x48 - Theta heat sink */ + u16 rminn_intake_fan; /* 0x4c - Intake fan min RPM */ + u16 rmaxn_intake_fan; /* 0x4e - Intake fan max RPM */ + u16 rminn_exhaust_fan; /* 0x50 - Exhaust fan min RPM */ + u16 rmaxn_exhaust_fan; /* 0x52 - Exhaust fan max RPM */ + u8 processor_part_num[8]; /* 0x54 - Processor part number XX pumps min/max */ + u32 processor_lot_num; /* 0x5c - Processor lot number */ + u8 orig_card_sernum[0x10]; /* 0x60 - Card original serial number */ + u8 curr_card_sernum[0x10]; /* 0x70 - Card current serial number */ + u8 mlb_sernum[0x18]; /* 0x80 - MLB serial number */ + u32 checksum1; /* 0x98 - */ + u32 checksum2; /* 0x9c - */ +}; /* Total size = 0xa0 */ + +static inline const struct mpu_data *wf_get_mpu(int cpu) +{ + struct device_node *np; + char nodename[64]; + const void *data; + int len; + + /* + * prom.c routine for finding a node by path is a bit brain dead + * and requires exact @xxx unit numbers. This is a bit ugly but + * will work for these machines + */ + sprintf(nodename, "/u3@0,f8000000/i2c@f8001000/cpuid@a%d", cpu ? 2 : 0); + np = of_find_node_by_path(nodename); + if (!np) + return NULL; + data = of_get_property(np, "cpuid", &len); + of_node_put(np); + if (!data) + return NULL; + + /* + * We are naughty, we have dropped the reference to the device + * node and still return a pointer to the content. We know we + * can do that though as this is only ever called on PowerMac + * which cannot remove those nodes + */ + return data; +} + +#endif /* __WINDFARM_MPU_H */ diff --git a/drivers/macintosh/windfarm_pm72.c b/drivers/macintosh/windfarm_pm72.c new file mode 100644 index 000000000000..84ac913d7e3a --- /dev/null +++ b/drivers/macintosh/windfarm_pm72.c @@ -0,0 +1,847 @@ +/* + * Windfarm PowerMac thermal control. + * Control loops for PowerMac7,2 and 7,3 + * + * Copyright (C) 2012 Benjamin Herrenschmidt, IBM Corp. + * + * Use and redistribute under the terms of the GNU GPL v2. + */ +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/reboot.h> +#include <asm/prom.h> +#include <asm/smu.h> + +#include "windfarm.h" +#include "windfarm_pid.h" +#include "windfarm_mpu.h" + +#define VERSION "1.0" + +#undef DEBUG +#undef LOTSA_DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +#ifdef LOTSA_DEBUG +#define DBG_LOTS(args...) printk(args) +#else +#define DBG_LOTS(args...) do { } while(0) +#endif + +/* define this to force CPU overtemp to 60 degree, useful for testing + * the overtemp code + */ +#undef HACKED_OVERTEMP + +/* We currently only handle 2 chips */ +#define NR_CHIPS 2 +#define NR_CPU_FANS 3 * NR_CHIPS + +/* Controls and sensors */ +static struct wf_sensor *sens_cpu_temp[NR_CHIPS]; +static struct wf_sensor *sens_cpu_volts[NR_CHIPS]; +static struct wf_sensor *sens_cpu_amps[NR_CHIPS]; +static struct wf_sensor *backside_temp; +static struct wf_sensor *drives_temp; + +static struct wf_control *cpu_front_fans[NR_CHIPS]; +static struct wf_control *cpu_rear_fans[NR_CHIPS]; +static struct wf_control *cpu_pumps[NR_CHIPS]; +static struct wf_control *backside_fan; +static struct wf_control *drives_fan; +static struct wf_control *slots_fan; +static struct wf_control *cpufreq_clamp; + +/* We keep a temperature history for average calculation of 180s */ +#define CPU_TEMP_HIST_SIZE 180 + +/* Fixed speed for slot fan */ +#define SLOTS_FAN_DEFAULT_PWM 40 + +/* Scale value for CPU intake fans */ +#define CPU_INTAKE_SCALE 0x0000f852 + +/* PID loop state */ +static const struct mpu_data *cpu_mpu_data[NR_CHIPS]; +static struct wf_cpu_pid_state cpu_pid[NR_CHIPS]; +static bool cpu_pid_combined; +static u32 cpu_thist[CPU_TEMP_HIST_SIZE]; +static int cpu_thist_pt; +static s64 cpu_thist_total; +static s32 cpu_all_tmax = 100 << 16; +static struct wf_pid_state backside_pid; +static int backside_tick; +static struct wf_pid_state drives_pid; +static int drives_tick; + +static int nr_chips; +static bool have_all_controls; +static bool have_all_sensors; +static bool started; + +static int failure_state; +#define FAILURE_SENSOR 1 +#define FAILURE_FAN 2 +#define FAILURE_PERM 4 +#define FAILURE_LOW_OVERTEMP 8 +#define FAILURE_HIGH_OVERTEMP 16 + +/* Overtemp values */ +#define LOW_OVER_AVERAGE 0 +#define LOW_OVER_IMMEDIATE (10 << 16) +#define LOW_OVER_CLEAR ((-10) << 16) +#define HIGH_OVER_IMMEDIATE (14 << 16) +#define HIGH_OVER_AVERAGE (10 << 16) +#define HIGH_OVER_IMMEDIATE (14 << 16) + + +static void cpu_max_all_fans(void) +{ + int i; + + /* We max all CPU fans in case of a sensor error. We also do the + * cpufreq clamping now, even if it's supposedly done later by the + * generic code anyway, we do it earlier here to react faster + */ + if (cpufreq_clamp) + wf_control_set_max(cpufreq_clamp); + for (i = 0; i < nr_chips; i++) { + if (cpu_front_fans[i]) + wf_control_set_max(cpu_front_fans[i]); + if (cpu_rear_fans[i]) + wf_control_set_max(cpu_rear_fans[i]); + if (cpu_pumps[i]) + wf_control_set_max(cpu_pumps[i]); + } +} + +static int cpu_check_overtemp(s32 temp) +{ + int new_state = 0; + s32 t_avg, t_old; + static bool first = true; + + /* First check for immediate overtemps */ + if (temp >= (cpu_all_tmax + LOW_OVER_IMMEDIATE)) { + new_state |= FAILURE_LOW_OVERTEMP; + if ((failure_state & FAILURE_LOW_OVERTEMP) == 0) + printk(KERN_ERR "windfarm: Overtemp due to immediate CPU" + " temperature !\n"); + } + if (temp >= (cpu_all_tmax + HIGH_OVER_IMMEDIATE)) { + new_state |= FAILURE_HIGH_OVERTEMP; + if ((failure_state & FAILURE_HIGH_OVERTEMP) == 0) + printk(KERN_ERR "windfarm: Critical overtemp due to" + " immediate CPU temperature !\n"); + } + + /* + * The first time around, initialize the array with the first + * temperature reading + */ + if (first) { + int i; + + cpu_thist_total = 0; + for (i = 0; i < CPU_TEMP_HIST_SIZE; i++) { + cpu_thist[i] = temp; + cpu_thist_total += temp; + } + first = false; + } + + /* + * We calculate a history of max temperatures and use that for the + * overtemp management + */ + t_old = cpu_thist[cpu_thist_pt]; + cpu_thist[cpu_thist_pt] = temp; + cpu_thist_pt = (cpu_thist_pt + 1) % CPU_TEMP_HIST_SIZE; + cpu_thist_total -= t_old; + cpu_thist_total += temp; + t_avg = cpu_thist_total / CPU_TEMP_HIST_SIZE; + + DBG_LOTS(" t_avg = %d.%03d (out: %d.%03d, in: %d.%03d)\n", + FIX32TOPRINT(t_avg), FIX32TOPRINT(t_old), FIX32TOPRINT(temp)); + + /* Now check for average overtemps */ + if (t_avg >= (cpu_all_tmax + LOW_OVER_AVERAGE)) { + new_state |= FAILURE_LOW_OVERTEMP; + if ((failure_state & FAILURE_LOW_OVERTEMP) == 0) + printk(KERN_ERR "windfarm: Overtemp due to average CPU" + " temperature !\n"); + } + if (t_avg >= (cpu_all_tmax + HIGH_OVER_AVERAGE)) { + new_state |= FAILURE_HIGH_OVERTEMP; + if ((failure_state & FAILURE_HIGH_OVERTEMP) == 0) + printk(KERN_ERR "windfarm: Critical overtemp due to" + " average CPU temperature !\n"); + } + + /* Now handle overtemp conditions. We don't currently use the windfarm + * overtemp handling core as it's not fully suited to the needs of those + * new machine. This will be fixed later. + */ + if (new_state) { + /* High overtemp -> immediate shutdown */ + if (new_state & FAILURE_HIGH_OVERTEMP) + machine_power_off(); + if ((failure_state & new_state) != new_state) + cpu_max_all_fans(); + failure_state |= new_state; + } else if ((failure_state & FAILURE_LOW_OVERTEMP) && + (temp < (cpu_all_tmax + LOW_OVER_CLEAR))) { + printk(KERN_ERR "windfarm: Overtemp condition cleared !\n"); + failure_state &= ~FAILURE_LOW_OVERTEMP; + } + + return failure_state & (FAILURE_LOW_OVERTEMP | FAILURE_HIGH_OVERTEMP); +} + +static int read_one_cpu_vals(int cpu, s32 *temp, s32 *power) +{ + s32 dtemp, volts, amps; + int rc; + + /* Get diode temperature */ + rc = wf_sensor_get(sens_cpu_temp[cpu], &dtemp); + if (rc) { + DBG(" CPU%d: temp reading error !\n", cpu); + return -EIO; + } + DBG_LOTS(" CPU%d: temp = %d.%03d\n", cpu, FIX32TOPRINT((dtemp))); + *temp = dtemp; + + /* Get voltage */ + rc = wf_sensor_get(sens_cpu_volts[cpu], &volts); + if (rc) { + DBG(" CPU%d, volts reading error !\n", cpu); + return -EIO; + } + DBG_LOTS(" CPU%d: volts = %d.%03d\n", cpu, FIX32TOPRINT((volts))); + + /* Get current */ + rc = wf_sensor_get(sens_cpu_amps[cpu], &s); + if (rc) { + DBG(" CPU%d, current reading error !\n", cpu); + return -EIO; + } + DBG_LOTS(" CPU%d: amps = %d.%03d\n", cpu, FIX32TOPRINT((amps))); + + /* Calculate power */ + + /* Scale voltage and current raw sensor values according to fixed scales + * obtained in Darwin and calculate power from I and V + */ + *power = (((u64)volts) * ((u64)amps)) >> 16; + + DBG_LOTS(" CPU%d: power = %d.%03d\n", cpu, FIX32TOPRINT((*power))); + + return 0; + +} + +static void cpu_fans_tick_split(void) +{ + int err, cpu; + s32 intake, temp, power, t_max = 0; + + DBG_LOTS("* cpu fans_tick_split()\n"); + + for (cpu = 0; cpu < nr_chips; ++cpu) { + struct wf_cpu_pid_state *sp = &cpu_pid[cpu]; + + /* Read current speed */ + wf_control_get(cpu_rear_fans[cpu], &sp->target); + + DBG_LOTS(" CPU%d: cur_target = %d RPM\n", cpu, sp->target); + + err = read_one_cpu_vals(cpu, &temp, &power); + if (err) { + failure_state |= FAILURE_SENSOR; + cpu_max_all_fans(); + return; + } + + /* Keep track of highest temp */ + t_max = max(t_max, temp); + + /* Handle possible overtemps */ + if (cpu_check_overtemp(t_max)) + return; + + /* Run PID */ + wf_cpu_pid_run(sp, power, temp); + + DBG_LOTS(" CPU%d: target = %d RPM\n", cpu, sp->target); + + /* Apply result directly to exhaust fan */ + err = wf_control_set(cpu_rear_fans[cpu], sp->target); + if (err) { + pr_warning("wf_pm72: Fan %s reports error %d\n", + cpu_rear_fans[cpu]->name, err); + failure_state |= FAILURE_FAN; + break; + } + + /* Scale result for intake fan */ + intake = (sp->target * CPU_INTAKE_SCALE) >> 16; + DBG_LOTS(" CPU%d: intake = %d RPM\n", cpu, intake); + err = wf_control_set(cpu_front_fans[cpu], intake); + if (err) { + pr_warning("wf_pm72: Fan %s reports error %d\n", + cpu_front_fans[cpu]->name, err); + failure_state |= FAILURE_FAN; + break; + } + } +} + +static void cpu_fans_tick_combined(void) +{ + s32 temp0, power0, temp1, power1, t_max = 0; + s32 temp, power, intake, pump; + struct wf_control *pump0, *pump1; + struct wf_cpu_pid_state *sp = &cpu_pid[0]; + int err, cpu; + + DBG_LOTS("* cpu fans_tick_combined()\n"); + + /* Read current speed from cpu 0 */ + wf_control_get(cpu_rear_fans[0], &sp->target); + + DBG_LOTS(" CPUs: cur_target = %d RPM\n", sp->target); + + /* Read values for both CPUs */ + err = read_one_cpu_vals(0, &temp0, &power0); + if (err) { + failure_state |= FAILURE_SENSOR; + cpu_max_all_fans(); + return; + } + err = read_one_cpu_vals(1, &temp1, &power1); + if (err) { + failure_state |= FAILURE_SENSOR; + cpu_max_all_fans(); + return; + } + + /* Keep track of highest temp */ + t_max = max(t_max, max(temp0, temp1)); + + /* Handle possible overtemps */ + if (cpu_check_overtemp(t_max)) + return; + + /* Use the max temp & power of both */ + temp = max(temp0, temp1); + power = max(power0, power1); + + /* Run PID */ + wf_cpu_pid_run(sp, power, temp); + + /* Scale result for intake fan */ + intake = (sp->target * CPU_INTAKE_SCALE) >> 16; + + /* Same deal with pump speed */ + pump0 = cpu_pumps[0]; + pump1 = cpu_pumps[1]; + if (!pump0) { + pump0 = pump1; + pump1 = NULL; + } + pump = (sp->target * wf_control_get_max(pump0)) / + cpu_mpu_data[0]->rmaxn_exhaust_fan; + + DBG_LOTS(" CPUs: target = %d RPM\n", sp->target); + DBG_LOTS(" CPUs: intake = %d RPM\n", intake); + DBG_LOTS(" CPUs: pump = %d RPM\n", pump); + + for (cpu = 0; cpu < nr_chips; cpu++) { + err = wf_control_set(cpu_rear_fans[cpu], sp->target); + if (err) { + pr_warning("wf_pm72: Fan %s reports error %d\n", + cpu_rear_fans[cpu]->name, err); + failure_state |= FAILURE_FAN; + } + err = wf_control_set(cpu_front_fans[cpu], intake); + if (err) { + pr_warning("wf_pm72: Fan %s reports error %d\n", + cpu_front_fans[cpu]->name, err); + failure_state |= FAILURE_FAN; + } + err = 0; + if (cpu_pumps[cpu]) + err = wf_control_set(cpu_pumps[cpu], pump); + if (err) { + pr_warning("wf_pm72: Pump %s reports error %d\n", + cpu_pumps[cpu]->name, err); + failure_state |= FAILURE_FAN; + } + } +} + +/* Implementation... */ +static int cpu_setup_pid(int cpu) +{ + struct wf_cpu_pid_param pid; + const struct mpu_data *mpu = cpu_mpu_data[cpu]; + s32 tmax, ttarget, ptarget; + int fmin, fmax, hsize; + + /* Get PID params from the appropriate MPU EEPROM */ + tmax = mpu->tmax << 16; + ttarget = mpu->ttarget << 16; + ptarget = ((s32)(mpu->pmaxh - mpu->padjmax)) << 16; + + DBG("wf_72: CPU%d ttarget = %d.%03d, tmax = %d.%03d\n", + cpu, FIX32TOPRINT(ttarget), FIX32TOPRINT(tmax)); + + /* We keep a global tmax for overtemp calculations */ + if (tmax < cpu_all_tmax) + cpu_all_tmax = tmax; + + /* Set PID min/max by using the rear fan min/max */ + fmin = wf_control_get_min(cpu_rear_fans[cpu]); + fmax = wf_control_get_max(cpu_rear_fans[cpu]); + DBG("wf_72: CPU%d max RPM range = [%d..%d]\n", cpu, fmin, fmax); + + /* History size */ + hsize = min_t(int, mpu->tguardband, WF_PID_MAX_HISTORY); + DBG("wf_72: CPU%d history size = %d\n", cpu, hsize); + + /* Initialize PID loop */ + pid.interval = 1; /* seconds */ + pid.history_len = hsize; + pid.gd = mpu->pid_gd; + pid.gp = mpu->pid_gp; + pid.gr = mpu->pid_gr; + pid.tmax = tmax; + pid.ttarget = ttarget; + pid.pmaxadj = ptarget; + pid.min = fmin; + pid.max = fmax; + + wf_cpu_pid_init(&cpu_pid[cpu], &pid); + cpu_pid[cpu].target = 1000; + + return 0; +} + +/* Backside/U3 fan */ +static struct wf_pid_param backside_u3_param = { + .interval = 5, + .history_len = 2, + .gd = 40 << 20, + .gp = 5 << 20, + .gr = 0, + .itarget = 65 << 16, + .additive = 1, + .min = 20, + .max = 100, +}; + +static struct wf_pid_param backside_u3h_param = { + .interval = 5, + .history_len = 2, + .gd = 20 << 20, + .gp = 5 << 20, + .gr = 0, + .itarget = 75 << 16, + .additive = 1, + .min = 20, + .max = 100, +}; + +static void backside_fan_tick(void) +{ + s32 temp; + int speed; + int err; + + if (!backside_fan || !backside_temp || !backside_tick) + return; + if (--backside_tick > 0) + return; + backside_tick = backside_pid.param.interval; + + DBG_LOTS("* backside fans tick\n"); + + /* Update fan speed from actual fans */ + err = wf_control_get(backside_fan, &speed); + if (!err) + backside_pid.target = speed; + + err = wf_sensor_get(backside_temp, &temp); + if (err) { + printk(KERN_WARNING "windfarm: U4 temp sensor error %d\n", + err); + failure_state |= FAILURE_SENSOR; + wf_control_set_max(backside_fan); + return; + } + speed = wf_pid_run(&backside_pid, temp); + + DBG_LOTS("backside PID temp=%d.%.3d speed=%d\n", + FIX32TOPRINT(temp), speed); + + err = wf_control_set(backside_fan, speed); + if (err) { + printk(KERN_WARNING "windfarm: backside fan error %d\n", err); + failure_state |= FAILURE_FAN; + } +} + +static void backside_setup_pid(void) +{ + /* first time initialize things */ + s32 fmin = wf_control_get_min(backside_fan); + s32 fmax = wf_control_get_max(backside_fan); + struct wf_pid_param param; + struct device_node *u3; + int u3h = 1; /* conservative by default */ + + u3 = of_find_node_by_path("/u3@0,f8000000"); + if (u3 != NULL) { + const u32 *vers = of_get_property(u3, "device-rev", NULL); + if (vers) + if (((*vers) & 0x3f) < 0x34) + u3h = 0; + of_node_put(u3); + } + + param = u3h ? backside_u3h_param : backside_u3_param; + + param.min = max(param.min, fmin); + param.max = min(param.max, fmax); + wf_pid_init(&backside_pid, ¶m); + backside_tick = 1; + + pr_info("wf_pm72: Backside control loop started.\n"); +} + +/* Drive bay fan */ +static const struct wf_pid_param drives_param = { + .interval = 5, + .history_len = 2, + .gd = 30 << 20, + .gp = 5 << 20, + .gr = 0, + .itarget = 40 << 16, + .additive = 1, + .min = 300, + .max = 4000, +}; + +static void drives_fan_tick(void) +{ + s32 temp; + int speed; + int err; + + if (!drives_fan || !drives_temp || !drives_tick) + return; + if (--drives_tick > 0) + return; + drives_tick = drives_pid.param.interval; + + DBG_LOTS("* drives fans tick\n"); + + /* Update fan speed from actual fans */ + err = wf_control_get(drives_fan, &speed); + if (!err) + drives_pid.target = speed; + + err = wf_sensor_get(drives_temp, &temp); + if (err) { + pr_warning("wf_pm72: drive bay temp sensor error %d\n", err); + failure_state |= FAILURE_SENSOR; + wf_control_set_max(drives_fan); + return; + } + speed = wf_pid_run(&drives_pid, temp); + + DBG_LOTS("drives PID temp=%d.%.3d speed=%d\n", + FIX32TOPRINT(temp), speed); + + err = wf_control_set(drives_fan, speed); + if (err) { + printk(KERN_WARNING "windfarm: drive bay fan error %d\n", err); + failure_state |= FAILURE_FAN; + } +} + +static void drives_setup_pid(void) +{ + /* first time initialize things */ + s32 fmin = wf_control_get_min(drives_fan); + s32 fmax = wf_control_get_max(drives_fan); + struct wf_pid_param param = drives_param; + + param.min = max(param.min, fmin); + param.max = min(param.max, fmax); + wf_pid_init(&drives_pid, ¶m); + drives_tick = 1; + + pr_info("wf_pm72: Drive bay control loop started.\n"); +} + +static void set_fail_state(void) +{ + cpu_max_all_fans(); + + if (backside_fan) + wf_control_set_max(backside_fan); + if (slots_fan) + wf_control_set_max(slots_fan); + if (drives_fan) + wf_control_set_max(drives_fan); +} + +static void pm72_tick(void) +{ + int i, last_failure; + + if (!started) { + started = 1; + printk(KERN_INFO "windfarm: CPUs control loops started.\n"); + for (i = 0; i < nr_chips; ++i) { + if (cpu_setup_pid(i) < 0) { + failure_state = FAILURE_PERM; + set_fail_state(); + break; + } + } + DBG_LOTS("cpu_all_tmax=%d.%03d\n", FIX32TOPRINT(cpu_all_tmax)); + + backside_setup_pid(); + drives_setup_pid(); + + /* + * We don't have the right stuff to drive the PCI fan + * so we fix it to a default value + */ + wf_control_set(slots_fan, SLOTS_FAN_DEFAULT_PWM); + +#ifdef HACKED_OVERTEMP + cpu_all_tmax = 60 << 16; +#endif + } + + /* Permanent failure, bail out */ + if (failure_state & FAILURE_PERM) + return; + + /* + * Clear all failure bits except low overtemp which will be eventually + * cleared by the control loop itself + */ + last_failure = failure_state; + failure_state &= FAILURE_LOW_OVERTEMP; + if (cpu_pid_combined) + cpu_fans_tick_combined(); + else + cpu_fans_tick_split(); + backside_fan_tick(); + drives_fan_tick(); + + DBG_LOTS(" last_failure: 0x%x, failure_state: %x\n", + last_failure, failure_state); + + /* Check for failures. Any failure causes cpufreq clamping */ + if (failure_state && last_failure == 0 && cpufreq_clamp) + wf_control_set_max(cpufreq_clamp); + if (failure_state == 0 && last_failure && cpufreq_clamp) + wf_control_set_min(cpufreq_clamp); + + /* That's it for now, we might want to deal with other failures + * differently in the future though + */ +} + +static void pm72_new_control(struct wf_control *ct) +{ + bool all_controls; + bool had_pump = cpu_pumps[0] || cpu_pumps[1]; + + if (!strcmp(ct->name, "cpu-front-fan-0")) + cpu_front_fans[0] = ct; + else if (!strcmp(ct->name, "cpu-front-fan-1")) + cpu_front_fans[1] = ct; + else if (!strcmp(ct->name, "cpu-rear-fan-0")) + cpu_rear_fans[0] = ct; + else if (!strcmp(ct->name, "cpu-rear-fan-1")) + cpu_rear_fans[1] = ct; + else if (!strcmp(ct->name, "cpu-pump-0")) + cpu_pumps[0] = ct; + else if (!strcmp(ct->name, "cpu-pump-1")) + cpu_pumps[1] = ct; + else if (!strcmp(ct->name, "backside-fan")) + backside_fan = ct; + else if (!strcmp(ct->name, "slots-fan")) + slots_fan = ct; + else if (!strcmp(ct->name, "drive-bay-fan")) + drives_fan = ct; + else if (!strcmp(ct->name, "cpufreq-clamp")) + cpufreq_clamp = ct; + + all_controls = + cpu_front_fans[0] && + cpu_rear_fans[0] && + backside_fan && + slots_fan && + drives_fan; + if (nr_chips > 1) + all_controls &= + cpu_front_fans[1] && + cpu_rear_fans[1]; + have_all_controls = all_controls; + + if ((cpu_pumps[0] || cpu_pumps[1]) && !had_pump) { + pr_info("wf_pm72: Liquid cooling pump(s) detected," + " using new algorithm !\n"); + cpu_pid_combined = true; + } +} + + +static void pm72_new_sensor(struct wf_sensor *sr) +{ + bool all_sensors; + + if (!strcmp(sr->name, "cpu-diode-temp-0")) + sens_cpu_temp[0] = sr; + else if (!strcmp(sr->name, "cpu-diode-temp-1")) + sens_cpu_temp[1] = sr; + else if (!strcmp(sr->name, "cpu-voltage-0")) + sens_cpu_volts[0] = sr; + else if (!strcmp(sr->name, "cpu-voltage-1")) + sens_cpu_volts[1] = sr; + else if (!strcmp(sr->name, "cpu-current-0")) + sens_cpu_amps[0] = sr; + else if (!strcmp(sr->name, "cpu-current-1")) + sens_cpu_amps[1] = sr; + else if (!strcmp(sr->name, "backside-temp")) + backside_temp = sr; + else if (!strcmp(sr->name, "hd-temp")) + drives_temp = sr; + + all_sensors = + sens_cpu_temp[0] && + sens_cpu_volts[0] && + sens_cpu_amps[0] && + backside_temp && + drives_temp; + if (nr_chips > 1) + all_sensors &= + sens_cpu_temp[1] && + sens_cpu_volts[1] && + sens_cpu_amps[1]; + + have_all_sensors = all_sensors; +} + +static int pm72_wf_notify(struct notifier_block *self, + unsigned long event, void *data) +{ + switch (event) { + case WF_EVENT_NEW_SENSOR: + pm72_new_sensor(data); + break; + case WF_EVENT_NEW_CONTROL: + pm72_new_control(data); + break; + case WF_EVENT_TICK: + if (have_all_controls && have_all_sensors) + pm72_tick(); + } + return 0; +} + +static struct notifier_block pm72_events = { + .notifier_call = pm72_wf_notify, +}; + +static int wf_pm72_probe(struct platform_device *dev) +{ + wf_register_client(&pm72_events); + return 0; +} + +static int __devexit wf_pm72_remove(struct platform_device *dev) +{ + wf_unregister_client(&pm72_events); + + /* should release all sensors and controls */ + return 0; +} + +static struct platform_driver wf_pm72_driver = { + .probe = wf_pm72_probe, + .remove = wf_pm72_remove, + .driver = { + .name = "windfarm", + .owner = THIS_MODULE, + }, +}; + +static int __init wf_pm72_init(void) +{ + struct device_node *cpu; + int i; + + if (!of_machine_is_compatible("PowerMac7,2") && + !of_machine_is_compatible("PowerMac7,3")) + return -ENODEV; + + /* Count the number of CPU cores */ + nr_chips = 0; + for (cpu = NULL; (cpu = of_find_node_by_type(cpu, "cpu")) != NULL; ) + ++nr_chips; + if (nr_chips > NR_CHIPS) + nr_chips = NR_CHIPS; + + pr_info("windfarm: Initializing for desktop G5 with %d chips\n", + nr_chips); + + /* Get MPU data for each CPU */ + for (i = 0; i < nr_chips; i++) { + cpu_mpu_data[i] = wf_get_mpu(i); + if (!cpu_mpu_data[i]) { + pr_err("wf_pm72: Failed to find MPU data for CPU %d\n", i); + return -ENXIO; + } + } + +#ifdef MODULE + request_module("windfarm_fcu_controls"); + request_module("windfarm_lm75_sensor"); + request_module("windfarm_ad7417_sensor"); + request_module("windfarm_max6690_sensor"); + request_module("windfarm_cpufreq_clamp"); +#endif /* MODULE */ + + platform_driver_register(&wf_pm72_driver); + return 0; +} + +static void __exit wf_pm72_exit(void) +{ + platform_driver_unregister(&wf_pm72_driver); +} + +module_init(wf_pm72_init); +module_exit(wf_pm72_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>"); +MODULE_DESCRIPTION("Thermal control for AGP PowerMac G5s"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:windfarm"); diff --git a/drivers/macintosh/windfarm_pm81.c b/drivers/macintosh/windfarm_pm81.c index fc13d0f2663b..990c87606be9 100644 --- a/drivers/macintosh/windfarm_pm81.c +++ b/drivers/macintosh/windfarm_pm81.c @@ -302,13 +302,13 @@ static void wf_smu_create_sys_fans(void) pid_param.interval = WF_SMU_SYS_FANS_INTERVAL; pid_param.history_len = WF_SMU_SYS_FANS_HISTORY_SIZE; pid_param.itarget = param->itarget; - pid_param.min = fan_system->ops->get_min(fan_system); - pid_param.max = fan_system->ops->get_max(fan_system); + pid_param.min = wf_control_get_min(fan_system); + pid_param.max = wf_control_get_max(fan_system); if (fan_hd) { pid_param.min = - max(pid_param.min,fan_hd->ops->get_min(fan_hd)); + max(pid_param.min, wf_control_get_min(fan_hd)); pid_param.max = - min(pid_param.max,fan_hd->ops->get_max(fan_hd)); + min(pid_param.max, wf_control_get_max(fan_hd)); } wf_pid_init(&wf_smu_sys_fans->pid, &pid_param); @@ -337,7 +337,7 @@ static void wf_smu_sys_fans_tick(struct wf_smu_sys_fans_state *st) } st->ticks = WF_SMU_SYS_FANS_INTERVAL; - rc = sensor_hd_temp->ops->get_value(sensor_hd_temp, &temp); + rc = wf_sensor_get(sensor_hd_temp, &temp); if (rc) { printk(KERN_WARNING "windfarm: HD temp sensor error %d\n", rc); @@ -373,7 +373,7 @@ static void wf_smu_sys_fans_tick(struct wf_smu_sys_fans_state *st) st->hd_setpoint = new_setpoint; readjust: if (fan_system && wf_smu_failure_state == 0) { - rc = fan_system->ops->set_value(fan_system, st->sys_setpoint); + rc = wf_control_set(fan_system, st->sys_setpoint); if (rc) { printk(KERN_WARNING "windfarm: Sys fan error %d\n", rc); @@ -381,7 +381,7 @@ static void wf_smu_sys_fans_tick(struct wf_smu_sys_fans_state *st) } } if (fan_hd && wf_smu_failure_state == 0) { - rc = fan_hd->ops->set_value(fan_hd, st->hd_setpoint); + rc = wf_control_set(fan_hd, st->hd_setpoint); if (rc) { printk(KERN_WARNING "windfarm: HD fan error %d\n", rc); @@ -447,8 +447,8 @@ static void wf_smu_create_cpu_fans(void) pid_param.ttarget = tmax - tdelta; pid_param.pmaxadj = maxpow - powadj; - pid_param.min = fan_cpu_main->ops->get_min(fan_cpu_main); - pid_param.max = fan_cpu_main->ops->get_max(fan_cpu_main); + pid_param.min = wf_control_get_min(fan_cpu_main); + pid_param.max = wf_control_get_max(fan_cpu_main); wf_cpu_pid_init(&wf_smu_cpu_fans->pid, &pid_param); @@ -481,7 +481,7 @@ static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) } st->ticks = WF_SMU_CPU_FANS_INTERVAL; - rc = sensor_cpu_temp->ops->get_value(sensor_cpu_temp, &temp); + rc = wf_sensor_get(sensor_cpu_temp, &temp); if (rc) { printk(KERN_WARNING "windfarm: CPU temp sensor error %d\n", rc); @@ -489,7 +489,7 @@ static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) return; } - rc = sensor_cpu_power->ops->get_value(sensor_cpu_power, &power); + rc = wf_sensor_get(sensor_cpu_power, &power); if (rc) { printk(KERN_WARNING "windfarm: CPU power sensor error %d\n", rc); @@ -525,8 +525,7 @@ static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) st->cpu_setpoint = new_setpoint; readjust: if (fan_cpu_main && wf_smu_failure_state == 0) { - rc = fan_cpu_main->ops->set_value(fan_cpu_main, - st->cpu_setpoint); + rc = wf_control_set(fan_cpu_main, st->cpu_setpoint); if (rc) { printk(KERN_WARNING "windfarm: CPU main fan" " error %d\n", rc); diff --git a/drivers/macintosh/windfarm_pm91.c b/drivers/macintosh/windfarm_pm91.c index a9430ed4f36c..7653603cb00e 100644 --- a/drivers/macintosh/windfarm_pm91.c +++ b/drivers/macintosh/windfarm_pm91.c @@ -192,8 +192,8 @@ static void wf_smu_create_cpu_fans(void) pid_param.ttarget = tmax - tdelta; pid_param.pmaxadj = maxpow - powadj; - pid_param.min = fan_cpu_main->ops->get_min(fan_cpu_main); - pid_param.max = fan_cpu_main->ops->get_max(fan_cpu_main); + pid_param.min = wf_control_get_min(fan_cpu_main); + pid_param.max = wf_control_get_max(fan_cpu_main); wf_cpu_pid_init(&wf_smu_cpu_fans->pid, &pid_param); @@ -226,7 +226,7 @@ static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) } st->ticks = WF_SMU_CPU_FANS_INTERVAL; - rc = sensor_cpu_temp->ops->get_value(sensor_cpu_temp, &temp); + rc = wf_sensor_get(sensor_cpu_temp, &temp); if (rc) { printk(KERN_WARNING "windfarm: CPU temp sensor error %d\n", rc); @@ -234,7 +234,7 @@ static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) return; } - rc = sensor_cpu_power->ops->get_value(sensor_cpu_power, &power); + rc = wf_sensor_get(sensor_cpu_power, &power); if (rc) { printk(KERN_WARNING "windfarm: CPU power sensor error %d\n", rc); @@ -261,8 +261,7 @@ static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) st->cpu_setpoint = new_setpoint; readjust: if (fan_cpu_main && wf_smu_failure_state == 0) { - rc = fan_cpu_main->ops->set_value(fan_cpu_main, - st->cpu_setpoint); + rc = wf_control_set(fan_cpu_main, st->cpu_setpoint); if (rc) { printk(KERN_WARNING "windfarm: CPU main fan" " error %d\n", rc); @@ -270,8 +269,7 @@ static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) } } if (fan_cpu_second && wf_smu_failure_state == 0) { - rc = fan_cpu_second->ops->set_value(fan_cpu_second, - st->cpu_setpoint); + rc = wf_control_set(fan_cpu_second, st->cpu_setpoint); if (rc) { printk(KERN_WARNING "windfarm: CPU second fan" " error %d\n", rc); @@ -279,8 +277,7 @@ static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) } } if (fan_cpu_third && wf_smu_failure_state == 0) { - rc = fan_cpu_main->ops->set_value(fan_cpu_third, - st->cpu_setpoint); + rc = wf_control_set(fan_cpu_third, st->cpu_setpoint); if (rc) { printk(KERN_WARNING "windfarm: CPU third fan" " error %d\n", rc); @@ -312,8 +309,8 @@ static void wf_smu_create_drive_fans(void) /* Fill PID params */ param.additive = (fan_hd->type == WF_CONTROL_RPM_FAN); - param.min = fan_hd->ops->get_min(fan_hd); - param.max = fan_hd->ops->get_max(fan_hd); + param.min = wf_control_get_min(fan_hd); + param.max = wf_control_get_max(fan_hd); wf_pid_init(&wf_smu_drive_fans->pid, ¶m); DBG("wf: Drive Fan control initialized.\n"); @@ -338,7 +335,7 @@ static void wf_smu_drive_fans_tick(struct wf_smu_drive_fans_state *st) } st->ticks = st->pid.param.interval; - rc = sensor_hd_temp->ops->get_value(sensor_hd_temp, &temp); + rc = wf_sensor_get(sensor_hd_temp, &temp); if (rc) { printk(KERN_WARNING "windfarm: HD temp sensor error %d\n", rc); @@ -361,7 +358,7 @@ static void wf_smu_drive_fans_tick(struct wf_smu_drive_fans_state *st) st->setpoint = new_setpoint; readjust: if (fan_hd && wf_smu_failure_state == 0) { - rc = fan_hd->ops->set_value(fan_hd, st->setpoint); + rc = wf_control_set(fan_hd, st->setpoint); if (rc) { printk(KERN_WARNING "windfarm: HD fan error %d\n", rc); @@ -393,8 +390,8 @@ static void wf_smu_create_slots_fans(void) /* Fill PID params */ param.additive = (fan_slots->type == WF_CONTROL_RPM_FAN); - param.min = fan_slots->ops->get_min(fan_slots); - param.max = fan_slots->ops->get_max(fan_slots); + param.min = wf_control_get_min(fan_slots); + param.max = wf_control_get_max(fan_slots); wf_pid_init(&wf_smu_slots_fans->pid, ¶m); DBG("wf: Slots Fan control initialized.\n"); @@ -419,7 +416,7 @@ static void wf_smu_slots_fans_tick(struct wf_smu_slots_fans_state *st) } st->ticks = st->pid.param.interval; - rc = sensor_slots_power->ops->get_value(sensor_slots_power, &power); + rc = wf_sensor_get(sensor_slots_power, &power); if (rc) { printk(KERN_WARNING "windfarm: Slots power sensor error %d\n", rc); @@ -444,7 +441,7 @@ static void wf_smu_slots_fans_tick(struct wf_smu_slots_fans_state *st) st->setpoint = new_setpoint; readjust: if (fan_slots && wf_smu_failure_state == 0) { - rc = fan_slots->ops->set_value(fan_slots, st->setpoint); + rc = wf_control_set(fan_slots, st->setpoint); if (rc) { printk(KERN_WARNING "windfarm: Slots fan error %d\n", rc); diff --git a/drivers/macintosh/windfarm_rm31.c b/drivers/macintosh/windfarm_rm31.c new file mode 100644 index 000000000000..3eca6d4b52fc --- /dev/null +++ b/drivers/macintosh/windfarm_rm31.c @@ -0,0 +1,740 @@ +/* + * Windfarm PowerMac thermal control. + * Control loops for RackMack3,1 (Xserve G5) + * + * Copyright (C) 2012 Benjamin Herrenschmidt, IBM Corp. + * + * Use and redistribute under the terms of the GNU GPL v2. + */ +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/reboot.h> +#include <asm/prom.h> +#include <asm/smu.h> + +#include "windfarm.h" +#include "windfarm_pid.h" +#include "windfarm_mpu.h" + +#define VERSION "1.0" + +#undef DEBUG +#undef LOTSA_DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +#ifdef LOTSA_DEBUG +#define DBG_LOTS(args...) printk(args) +#else +#define DBG_LOTS(args...) do { } while(0) +#endif + +/* define this to force CPU overtemp to 60 degree, useful for testing + * the overtemp code + */ +#undef HACKED_OVERTEMP + +/* We currently only handle 2 chips */ +#define NR_CHIPS 2 +#define NR_CPU_FANS 3 * NR_CHIPS + +/* Controls and sensors */ +static struct wf_sensor *sens_cpu_temp[NR_CHIPS]; +static struct wf_sensor *sens_cpu_volts[NR_CHIPS]; +static struct wf_sensor *sens_cpu_amps[NR_CHIPS]; +static struct wf_sensor *backside_temp; +static struct wf_sensor *slots_temp; +static struct wf_sensor *dimms_temp; + +static struct wf_control *cpu_fans[NR_CHIPS][3]; +static struct wf_control *backside_fan; +static struct wf_control *slots_fan; +static struct wf_control *cpufreq_clamp; + +/* We keep a temperature history for average calculation of 180s */ +#define CPU_TEMP_HIST_SIZE 180 + +/* PID loop state */ +static const struct mpu_data *cpu_mpu_data[NR_CHIPS]; +static struct wf_cpu_pid_state cpu_pid[NR_CHIPS]; +static u32 cpu_thist[CPU_TEMP_HIST_SIZE]; +static int cpu_thist_pt; +static s64 cpu_thist_total; +static s32 cpu_all_tmax = 100 << 16; +static struct wf_pid_state backside_pid; +static int backside_tick; +static struct wf_pid_state slots_pid; +static int slots_tick; +static int slots_speed; +static struct wf_pid_state dimms_pid; +static int dimms_output_clamp; + +static int nr_chips; +static bool have_all_controls; +static bool have_all_sensors; +static bool started; + +static int failure_state; +#define FAILURE_SENSOR 1 +#define FAILURE_FAN 2 +#define FAILURE_PERM 4 +#define FAILURE_LOW_OVERTEMP 8 +#define FAILURE_HIGH_OVERTEMP 16 + +/* Overtemp values */ +#define LOW_OVER_AVERAGE 0 +#define LOW_OVER_IMMEDIATE (10 << 16) +#define LOW_OVER_CLEAR ((-10) << 16) +#define HIGH_OVER_IMMEDIATE (14 << 16) +#define HIGH_OVER_AVERAGE (10 << 16) +#define HIGH_OVER_IMMEDIATE (14 << 16) + + +static void cpu_max_all_fans(void) +{ + int i; + + /* We max all CPU fans in case of a sensor error. We also do the + * cpufreq clamping now, even if it's supposedly done later by the + * generic code anyway, we do it earlier here to react faster + */ + if (cpufreq_clamp) + wf_control_set_max(cpufreq_clamp); + for (i = 0; i < nr_chips; i++) { + if (cpu_fans[i][0]) + wf_control_set_max(cpu_fans[i][0]); + if (cpu_fans[i][1]) + wf_control_set_max(cpu_fans[i][1]); + if (cpu_fans[i][2]) + wf_control_set_max(cpu_fans[i][2]); + } +} + +static int cpu_check_overtemp(s32 temp) +{ + int new_state = 0; + s32 t_avg, t_old; + static bool first = true; + + /* First check for immediate overtemps */ + if (temp >= (cpu_all_tmax + LOW_OVER_IMMEDIATE)) { + new_state |= FAILURE_LOW_OVERTEMP; + if ((failure_state & FAILURE_LOW_OVERTEMP) == 0) + printk(KERN_ERR "windfarm: Overtemp due to immediate CPU" + " temperature !\n"); + } + if (temp >= (cpu_all_tmax + HIGH_OVER_IMMEDIATE)) { + new_state |= FAILURE_HIGH_OVERTEMP; + if ((failure_state & FAILURE_HIGH_OVERTEMP) == 0) + printk(KERN_ERR "windfarm: Critical overtemp due to" + " immediate CPU temperature !\n"); + } + + /* + * The first time around, initialize the array with the first + * temperature reading + */ + if (first) { + int i; + + cpu_thist_total = 0; + for (i = 0; i < CPU_TEMP_HIST_SIZE; i++) { + cpu_thist[i] = temp; + cpu_thist_total += temp; + } + first = false; + } + + /* + * We calculate a history of max temperatures and use that for the + * overtemp management + */ + t_old = cpu_thist[cpu_thist_pt]; + cpu_thist[cpu_thist_pt] = temp; + cpu_thist_pt = (cpu_thist_pt + 1) % CPU_TEMP_HIST_SIZE; + cpu_thist_total -= t_old; + cpu_thist_total += temp; + t_avg = cpu_thist_total / CPU_TEMP_HIST_SIZE; + + DBG_LOTS(" t_avg = %d.%03d (out: %d.%03d, in: %d.%03d)\n", + FIX32TOPRINT(t_avg), FIX32TOPRINT(t_old), FIX32TOPRINT(temp)); + + /* Now check for average overtemps */ + if (t_avg >= (cpu_all_tmax + LOW_OVER_AVERAGE)) { + new_state |= FAILURE_LOW_OVERTEMP; + if ((failure_state & FAILURE_LOW_OVERTEMP) == 0) + printk(KERN_ERR "windfarm: Overtemp due to average CPU" + " temperature !\n"); + } + if (t_avg >= (cpu_all_tmax + HIGH_OVER_AVERAGE)) { + new_state |= FAILURE_HIGH_OVERTEMP; + if ((failure_state & FAILURE_HIGH_OVERTEMP) == 0) + printk(KERN_ERR "windfarm: Critical overtemp due to" + " average CPU temperature !\n"); + } + + /* Now handle overtemp conditions. We don't currently use the windfarm + * overtemp handling core as it's not fully suited to the needs of those + * new machine. This will be fixed later. + */ + if (new_state) { + /* High overtemp -> immediate shutdown */ + if (new_state & FAILURE_HIGH_OVERTEMP) + machine_power_off(); + if ((failure_state & new_state) != new_state) + cpu_max_all_fans(); + failure_state |= new_state; + } else if ((failure_state & FAILURE_LOW_OVERTEMP) && + (temp < (cpu_all_tmax + LOW_OVER_CLEAR))) { + printk(KERN_ERR "windfarm: Overtemp condition cleared !\n"); + failure_state &= ~FAILURE_LOW_OVERTEMP; + } + + return failure_state & (FAILURE_LOW_OVERTEMP | FAILURE_HIGH_OVERTEMP); +} + +static int read_one_cpu_vals(int cpu, s32 *temp, s32 *power) +{ + s32 dtemp, volts, amps; + int rc; + + /* Get diode temperature */ + rc = wf_sensor_get(sens_cpu_temp[cpu], &dtemp); + if (rc) { + DBG(" CPU%d: temp reading error !\n", cpu); + return -EIO; + } + DBG_LOTS(" CPU%d: temp = %d.%03d\n", cpu, FIX32TOPRINT((dtemp))); + *temp = dtemp; + + /* Get voltage */ + rc = wf_sensor_get(sens_cpu_volts[cpu], &volts); + if (rc) { + DBG(" CPU%d, volts reading error !\n", cpu); + return -EIO; + } + DBG_LOTS(" CPU%d: volts = %d.%03d\n", cpu, FIX32TOPRINT((volts))); + + /* Get current */ + rc = wf_sensor_get(sens_cpu_amps[cpu], &s); + if (rc) { + DBG(" CPU%d, current reading error !\n", cpu); + return -EIO; + } + DBG_LOTS(" CPU%d: amps = %d.%03d\n", cpu, FIX32TOPRINT((amps))); + + /* Calculate power */ + + /* Scale voltage and current raw sensor values according to fixed scales + * obtained in Darwin and calculate power from I and V + */ + *power = (((u64)volts) * ((u64)amps)) >> 16; + + DBG_LOTS(" CPU%d: power = %d.%03d\n", cpu, FIX32TOPRINT((*power))); + + return 0; + +} + +static void cpu_fans_tick(void) +{ + int err, cpu, i; + s32 speed, temp, power, t_max = 0; + + DBG_LOTS("* cpu fans_tick_split()\n"); + + for (cpu = 0; cpu < nr_chips; ++cpu) { + struct wf_cpu_pid_state *sp = &cpu_pid[cpu]; + + /* Read current speed */ + wf_control_get(cpu_fans[cpu][0], &sp->target); + + err = read_one_cpu_vals(cpu, &temp, &power); + if (err) { + failure_state |= FAILURE_SENSOR; + cpu_max_all_fans(); + return; + } + + /* Keep track of highest temp */ + t_max = max(t_max, temp); + + /* Handle possible overtemps */ + if (cpu_check_overtemp(t_max)) + return; + + /* Run PID */ + wf_cpu_pid_run(sp, power, temp); + + DBG_LOTS(" CPU%d: target = %d RPM\n", cpu, sp->target); + + /* Apply DIMMs clamp */ + speed = max(sp->target, dimms_output_clamp); + + /* Apply result to all cpu fans */ + for (i = 0; i < 3; i++) { + err = wf_control_set(cpu_fans[cpu][i], speed); + if (err) { + pr_warning("wf_rm31: Fan %s reports error %d\n", + cpu_fans[cpu][i]->name, err); + failure_state |= FAILURE_FAN; + } + } + } +} + +/* Implementation... */ +static int cpu_setup_pid(int cpu) +{ + struct wf_cpu_pid_param pid; + const struct mpu_data *mpu = cpu_mpu_data[cpu]; + s32 tmax, ttarget, ptarget; + int fmin, fmax, hsize; + + /* Get PID params from the appropriate MPU EEPROM */ + tmax = mpu->tmax << 16; + ttarget = mpu->ttarget << 16; + ptarget = ((s32)(mpu->pmaxh - mpu->padjmax)) << 16; + + DBG("wf_72: CPU%d ttarget = %d.%03d, tmax = %d.%03d\n", + cpu, FIX32TOPRINT(ttarget), FIX32TOPRINT(tmax)); + + /* We keep a global tmax for overtemp calculations */ + if (tmax < cpu_all_tmax) + cpu_all_tmax = tmax; + + /* Set PID min/max by using the rear fan min/max */ + fmin = wf_control_get_min(cpu_fans[cpu][0]); + fmax = wf_control_get_max(cpu_fans[cpu][0]); + DBG("wf_72: CPU%d max RPM range = [%d..%d]\n", cpu, fmin, fmax); + + /* History size */ + hsize = min_t(int, mpu->tguardband, WF_PID_MAX_HISTORY); + DBG("wf_72: CPU%d history size = %d\n", cpu, hsize); + + /* Initialize PID loop */ + pid.interval = 1; /* seconds */ + pid.history_len = hsize; + pid.gd = mpu->pid_gd; + pid.gp = mpu->pid_gp; + pid.gr = mpu->pid_gr; + pid.tmax = tmax; + pid.ttarget = ttarget; + pid.pmaxadj = ptarget; + pid.min = fmin; + pid.max = fmax; + + wf_cpu_pid_init(&cpu_pid[cpu], &pid); + cpu_pid[cpu].target = 4000; + + return 0; +} + +/* Backside/U3 fan */ +static struct wf_pid_param backside_param = { + .interval = 1, + .history_len = 2, + .gd = 0x00500000, + .gp = 0x0004cccc, + .gr = 0, + .itarget = 70 << 16, + .additive = 0, + .min = 20, + .max = 100, +}; + +/* DIMMs temperature (clamp the backside fan) */ +static struct wf_pid_param dimms_param = { + .interval = 1, + .history_len = 20, + .gd = 0, + .gp = 0, + .gr = 0x06553600, + .itarget = 50 << 16, + .additive = 0, + .min = 4000, + .max = 14000, +}; + +static void backside_fan_tick(void) +{ + s32 temp, dtemp; + int speed, dspeed, fan_min; + int err; + + if (!backside_fan || !backside_temp || !dimms_temp || !backside_tick) + return; + if (--backside_tick > 0) + return; + backside_tick = backside_pid.param.interval; + + DBG_LOTS("* backside fans tick\n"); + + /* Update fan speed from actual fans */ + err = wf_control_get(backside_fan, &speed); + if (!err) + backside_pid.target = speed; + + err = wf_sensor_get(backside_temp, &temp); + if (err) { + printk(KERN_WARNING "windfarm: U3 temp sensor error %d\n", + err); + failure_state |= FAILURE_SENSOR; + wf_control_set_max(backside_fan); + return; + } + speed = wf_pid_run(&backside_pid, temp); + + DBG_LOTS("backside PID temp=%d.%.3d speed=%d\n", + FIX32TOPRINT(temp), speed); + + err = wf_sensor_get(dimms_temp, &dtemp); + if (err) { + printk(KERN_WARNING "windfarm: DIMMs temp sensor error %d\n", + err); + failure_state |= FAILURE_SENSOR; + wf_control_set_max(backside_fan); + return; + } + dspeed = wf_pid_run(&dimms_pid, dtemp); + dimms_output_clamp = dspeed; + + fan_min = (dspeed * 100) / 14000; + fan_min = max(fan_min, backside_param.min); + speed = max(speed, fan_min); + + err = wf_control_set(backside_fan, speed); + if (err) { + printk(KERN_WARNING "windfarm: backside fan error %d\n", err); + failure_state |= FAILURE_FAN; + } +} + +static void backside_setup_pid(void) +{ + /* first time initialize things */ + s32 fmin = wf_control_get_min(backside_fan); + s32 fmax = wf_control_get_max(backside_fan); + struct wf_pid_param param; + + param = backside_param; + param.min = max(param.min, fmin); + param.max = min(param.max, fmax); + wf_pid_init(&backside_pid, ¶m); + + param = dimms_param; + wf_pid_init(&dimms_pid, ¶m); + + backside_tick = 1; + + pr_info("wf_rm31: Backside control loop started.\n"); +} + +/* Slots fan */ +static const struct wf_pid_param slots_param = { + .interval = 5, + .history_len = 2, + .gd = 30 << 20, + .gp = 5 << 20, + .gr = 0, + .itarget = 40 << 16, + .additive = 1, + .min = 300, + .max = 4000, +}; + +static void slots_fan_tick(void) +{ + s32 temp; + int speed; + int err; + + if (!slots_fan || !slots_temp || !slots_tick) + return; + if (--slots_tick > 0) + return; + slots_tick = slots_pid.param.interval; + + DBG_LOTS("* slots fans tick\n"); + + err = wf_sensor_get(slots_temp, &temp); + if (err) { + pr_warning("wf_rm31: slots temp sensor error %d\n", err); + failure_state |= FAILURE_SENSOR; + wf_control_set_max(slots_fan); + return; + } + speed = wf_pid_run(&slots_pid, temp); + + DBG_LOTS("slots PID temp=%d.%.3d speed=%d\n", + FIX32TOPRINT(temp), speed); + + slots_speed = speed; + err = wf_control_set(slots_fan, speed); + if (err) { + printk(KERN_WARNING "windfarm: slots bay fan error %d\n", err); + failure_state |= FAILURE_FAN; + } +} + +static void slots_setup_pid(void) +{ + /* first time initialize things */ + s32 fmin = wf_control_get_min(slots_fan); + s32 fmax = wf_control_get_max(slots_fan); + struct wf_pid_param param = slots_param; + + param.min = max(param.min, fmin); + param.max = min(param.max, fmax); + wf_pid_init(&slots_pid, ¶m); + slots_tick = 1; + + pr_info("wf_rm31: Slots control loop started.\n"); +} + +static void set_fail_state(void) +{ + cpu_max_all_fans(); + + if (backside_fan) + wf_control_set_max(backside_fan); + if (slots_fan) + wf_control_set_max(slots_fan); +} + +static void rm31_tick(void) +{ + int i, last_failure; + + if (!started) { + started = 1; + printk(KERN_INFO "windfarm: CPUs control loops started.\n"); + for (i = 0; i < nr_chips; ++i) { + if (cpu_setup_pid(i) < 0) { + failure_state = FAILURE_PERM; + set_fail_state(); + break; + } + } + DBG_LOTS("cpu_all_tmax=%d.%03d\n", FIX32TOPRINT(cpu_all_tmax)); + + backside_setup_pid(); + slots_setup_pid(); + +#ifdef HACKED_OVERTEMP + cpu_all_tmax = 60 << 16; +#endif + } + + /* Permanent failure, bail out */ + if (failure_state & FAILURE_PERM) + return; + + /* + * Clear all failure bits except low overtemp which will be eventually + * cleared by the control loop itself + */ + last_failure = failure_state; + failure_state &= FAILURE_LOW_OVERTEMP; + backside_fan_tick(); + slots_fan_tick(); + + /* We do CPUs last because they can be clamped high by + * DIMM temperature + */ + cpu_fans_tick(); + + DBG_LOTS(" last_failure: 0x%x, failure_state: %x\n", + last_failure, failure_state); + + /* Check for failures. Any failure causes cpufreq clamping */ + if (failure_state && last_failure == 0 && cpufreq_clamp) + wf_control_set_max(cpufreq_clamp); + if (failure_state == 0 && last_failure && cpufreq_clamp) + wf_control_set_min(cpufreq_clamp); + + /* That's it for now, we might want to deal with other failures + * differently in the future though + */ +} + +static void rm31_new_control(struct wf_control *ct) +{ + bool all_controls; + + if (!strcmp(ct->name, "cpu-fan-a-0")) + cpu_fans[0][0] = ct; + else if (!strcmp(ct->name, "cpu-fan-b-0")) + cpu_fans[0][1] = ct; + else if (!strcmp(ct->name, "cpu-fan-c-0")) + cpu_fans[0][2] = ct; + else if (!strcmp(ct->name, "cpu-fan-a-1")) + cpu_fans[1][0] = ct; + else if (!strcmp(ct->name, "cpu-fan-b-1")) + cpu_fans[1][1] = ct; + else if (!strcmp(ct->name, "cpu-fan-c-1")) + cpu_fans[1][2] = ct; + else if (!strcmp(ct->name, "backside-fan")) + backside_fan = ct; + else if (!strcmp(ct->name, "slots-fan")) + slots_fan = ct; + else if (!strcmp(ct->name, "cpufreq-clamp")) + cpufreq_clamp = ct; + + all_controls = + cpu_fans[0][0] && + cpu_fans[0][1] && + cpu_fans[0][2] && + backside_fan && + slots_fan; + if (nr_chips > 1) + all_controls &= + cpu_fans[1][0] && + cpu_fans[1][1] && + cpu_fans[1][2]; + have_all_controls = all_controls; +} + + +static void rm31_new_sensor(struct wf_sensor *sr) +{ + bool all_sensors; + + if (!strcmp(sr->name, "cpu-diode-temp-0")) + sens_cpu_temp[0] = sr; + else if (!strcmp(sr->name, "cpu-diode-temp-1")) + sens_cpu_temp[1] = sr; + else if (!strcmp(sr->name, "cpu-voltage-0")) + sens_cpu_volts[0] = sr; + else if (!strcmp(sr->name, "cpu-voltage-1")) + sens_cpu_volts[1] = sr; + else if (!strcmp(sr->name, "cpu-current-0")) + sens_cpu_amps[0] = sr; + else if (!strcmp(sr->name, "cpu-current-1")) + sens_cpu_amps[1] = sr; + else if (!strcmp(sr->name, "backside-temp")) + backside_temp = sr; + else if (!strcmp(sr->name, "slots-temp")) + slots_temp = sr; + else if (!strcmp(sr->name, "dimms-temp")) + dimms_temp = sr; + + all_sensors = + sens_cpu_temp[0] && + sens_cpu_volts[0] && + sens_cpu_amps[0] && + backside_temp && + slots_temp && + dimms_temp; + if (nr_chips > 1) + all_sensors &= + sens_cpu_temp[1] && + sens_cpu_volts[1] && + sens_cpu_amps[1]; + + have_all_sensors = all_sensors; +} + +static int rm31_wf_notify(struct notifier_block *self, + unsigned long event, void *data) +{ + switch (event) { + case WF_EVENT_NEW_SENSOR: + rm31_new_sensor(data); + break; + case WF_EVENT_NEW_CONTROL: + rm31_new_control(data); + break; + case WF_EVENT_TICK: + if (have_all_controls && have_all_sensors) + rm31_tick(); + } + return 0; +} + +static struct notifier_block rm31_events = { + .notifier_call = rm31_wf_notify, +}; + +static int wf_rm31_probe(struct platform_device *dev) +{ + wf_register_client(&rm31_events); + return 0; +} + +static int __devexit wf_rm31_remove(struct platform_device *dev) +{ + wf_unregister_client(&rm31_events); + + /* should release all sensors and controls */ + return 0; +} + +static struct platform_driver wf_rm31_driver = { + .probe = wf_rm31_probe, + .remove = wf_rm31_remove, + .driver = { + .name = "windfarm", + .owner = THIS_MODULE, + }, +}; + +static int __init wf_rm31_init(void) +{ + struct device_node *cpu; + int i; + + if (!of_machine_is_compatible("RackMac3,1")) + return -ENODEV; + + /* Count the number of CPU cores */ + nr_chips = 0; + for (cpu = NULL; (cpu = of_find_node_by_type(cpu, "cpu")) != NULL; ) + ++nr_chips; + if (nr_chips > NR_CHIPS) + nr_chips = NR_CHIPS; + + pr_info("windfarm: Initializing for desktop G5 with %d chips\n", + nr_chips); + + /* Get MPU data for each CPU */ + for (i = 0; i < nr_chips; i++) { + cpu_mpu_data[i] = wf_get_mpu(i); + if (!cpu_mpu_data[i]) { + pr_err("wf_rm31: Failed to find MPU data for CPU %d\n", i); + return -ENXIO; + } + } + +#ifdef MODULE + request_module("windfarm_fcu_controls"); + request_module("windfarm_lm75_sensor"); + request_module("windfarm_lm87_sensor"); + request_module("windfarm_ad7417_sensor"); + request_module("windfarm_max6690_sensor"); + request_module("windfarm_cpufreq_clamp"); +#endif /* MODULE */ + + platform_driver_register(&wf_rm31_driver); + return 0; +} + +static void __exit wf_rm31_exit(void) +{ + platform_driver_unregister(&wf_rm31_driver); +} + +module_init(wf_rm31_init); +module_exit(wf_rm31_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>"); +MODULE_DESCRIPTION("Thermal control for Xserve G5"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:windfarm"); diff --git a/drivers/macintosh/windfarm_smu_controls.c b/drivers/macintosh/windfarm_smu_controls.c index 3c2be5193fd5..c155a54e8638 100644 --- a/drivers/macintosh/windfarm_smu_controls.c +++ b/drivers/macintosh/windfarm_smu_controls.c @@ -172,7 +172,6 @@ static struct smu_fan_control *smu_fan_create(struct device_node *node, fct->fan_type = pwm_fan; fct->ctrl.type = pwm_fan ? WF_CONTROL_PWM_FAN : WF_CONTROL_RPM_FAN; - sysfs_attr_init(&fct->ctrl.attr.attr); /* We use the name & location here the same way we do for SMU sensors, * see the comment in windfarm_smu_sensors.c. The locations are a bit diff --git a/drivers/macintosh/windfarm_smu_sat.c b/drivers/macintosh/windfarm_smu_sat.c index 65a8ff3e1f8e..426e810233d7 100644 --- a/drivers/macintosh/windfarm_smu_sat.c +++ b/drivers/macintosh/windfarm_smu_sat.c @@ -20,7 +20,7 @@ #include "windfarm.h" -#define VERSION "0.2" +#define VERSION "1.0" #define DEBUG @@ -34,11 +34,12 @@ #define MAX_AGE msecs_to_jiffies(800) struct wf_sat { + struct kref ref; int nr; - atomic_t refcnt; struct mutex mutex; unsigned long last_read; /* jiffies when cache last updated */ u8 cache[16]; + struct list_head sensors; struct i2c_client *i2c; struct device_node *node; }; @@ -46,11 +47,12 @@ struct wf_sat { static struct wf_sat *sats[2]; struct wf_sat_sensor { - int index; - int index2; /* used for power sensors */ - int shift; - struct wf_sat *sat; - struct wf_sensor sens; + struct list_head link; + int index; + int index2; /* used for power sensors */ + int shift; + struct wf_sat *sat; + struct wf_sensor sens; }; #define wf_to_sat(c) container_of(c, struct wf_sat_sensor, sens) @@ -142,7 +144,7 @@ static int wf_sat_read_cache(struct wf_sat *sat) return 0; } -static int wf_sat_get(struct wf_sensor *sr, s32 *value) +static int wf_sat_sensor_get(struct wf_sensor *sr, s32 *value) { struct wf_sat_sensor *sens = wf_to_sat(sr); struct wf_sat *sat = sens->sat; @@ -175,62 +177,34 @@ static int wf_sat_get(struct wf_sensor *sr, s32 *value) return err; } -static void wf_sat_release(struct wf_sensor *sr) +static void wf_sat_release(struct kref *ref) +{ + struct wf_sat *sat = container_of(ref, struct wf_sat, ref); + + if (sat->nr >= 0) + sats[sat->nr] = NULL; + kfree(sat); +} + +static void wf_sat_sensor_release(struct wf_sensor *sr) { struct wf_sat_sensor *sens = wf_to_sat(sr); struct wf_sat *sat = sens->sat; - if (atomic_dec_and_test(&sat->refcnt)) { - if (sat->nr >= 0) - sats[sat->nr] = NULL; - kfree(sat); - } kfree(sens); + kref_put(&sat->ref, wf_sat_release); } static struct wf_sensor_ops wf_sat_ops = { - .get_value = wf_sat_get, - .release = wf_sat_release, + .get_value = wf_sat_sensor_get, + .release = wf_sat_sensor_release, .owner = THIS_MODULE, }; -static struct i2c_driver wf_sat_driver; - -static void wf_sat_create(struct i2c_adapter *adapter, struct device_node *dev) -{ - struct i2c_board_info info; - struct i2c_client *client; - const u32 *reg; - u8 addr; - - reg = of_get_property(dev, "reg", NULL); - if (reg == NULL) - return; - addr = *reg; - DBG(KERN_DEBUG "wf_sat: creating sat at address %x\n", addr); - - memset(&info, 0, sizeof(struct i2c_board_info)); - info.addr = (addr >> 1) & 0x7f; - info.platform_data = dev; - strlcpy(info.type, "wf_sat", I2C_NAME_SIZE); - - client = i2c_new_device(adapter, &info); - if (client == NULL) { - printk(KERN_ERR "windfarm: failed to attach smu-sat to i2c\n"); - return; - } - - /* - * Let i2c-core delete that device on driver removal. - * This is safe because i2c-core holds the core_lock mutex for us. - */ - list_add_tail(&client->detected, &wf_sat_driver.clients); -} - static int wf_sat_probe(struct i2c_client *client, const struct i2c_device_id *id) { - struct device_node *dev = client->dev.platform_data; + struct device_node *dev = client->dev.of_node; struct wf_sat *sat; struct wf_sat_sensor *sens; const u32 *reg; @@ -246,9 +220,10 @@ static int wf_sat_probe(struct i2c_client *client, return -ENOMEM; sat->nr = -1; sat->node = of_node_get(dev); - atomic_set(&sat->refcnt, 0); + kref_init(&sat->ref); mutex_init(&sat->mutex); sat->i2c = client; + INIT_LIST_HEAD(&sat->sensors); i2c_set_clientdata(client, sat); vsens[0] = vsens[1] = -1; @@ -310,14 +285,15 @@ static int wf_sat_probe(struct i2c_client *client, sens->index2 = -1; sens->shift = shift; sens->sat = sat; - atomic_inc(&sat->refcnt); sens->sens.ops = &wf_sat_ops; sens->sens.name = (char *) (sens + 1); - snprintf(sens->sens.name, 16, "%s-%d", name, cpu); + snprintf((char *)sens->sens.name, 16, "%s-%d", name, cpu); - if (wf_register_sensor(&sens->sens)) { - atomic_dec(&sat->refcnt); + if (wf_register_sensor(&sens->sens)) kfree(sens); + else { + list_add(&sens->link, &sat->sensors); + kref_get(&sat->ref); } } @@ -336,14 +312,15 @@ static int wf_sat_probe(struct i2c_client *client, sens->index2 = isens[core]; sens->shift = 0; sens->sat = sat; - atomic_inc(&sat->refcnt); sens->sens.ops = &wf_sat_ops; sens->sens.name = (char *) (sens + 1); - snprintf(sens->sens.name, 16, "cpu-power-%d", cpu); + snprintf((char *)sens->sens.name, 16, "cpu-power-%d", cpu); - if (wf_register_sensor(&sens->sens)) { - atomic_dec(&sat->refcnt); + if (wf_register_sensor(&sens->sens)) kfree(sens); + else { + list_add(&sens->link, &sat->sensors); + kref_get(&sat->ref); } } @@ -353,42 +330,35 @@ static int wf_sat_probe(struct i2c_client *client, return 0; } -static int wf_sat_attach(struct i2c_adapter *adapter) -{ - struct device_node *busnode, *dev = NULL; - struct pmac_i2c_bus *bus; - - bus = pmac_i2c_adapter_to_bus(adapter); - if (bus == NULL) - return -ENODEV; - busnode = pmac_i2c_get_bus_node(bus); - - while ((dev = of_get_next_child(busnode, dev)) != NULL) - if (of_device_is_compatible(dev, "smu-sat")) - wf_sat_create(adapter, dev); - return 0; -} - static int wf_sat_remove(struct i2c_client *client) { struct wf_sat *sat = i2c_get_clientdata(client); + struct wf_sat_sensor *sens; - /* XXX TODO */ - + /* release sensors */ + while(!list_empty(&sat->sensors)) { + sens = list_first_entry(&sat->sensors, + struct wf_sat_sensor, link); + list_del(&sens->link); + wf_unregister_sensor(&sens->sens); + } sat->i2c = NULL; + i2c_set_clientdata(client, NULL); + kref_put(&sat->ref, wf_sat_release); + return 0; } static const struct i2c_device_id wf_sat_id[] = { - { "wf_sat", 0 }, + { "MAC,smu-sat", 0 }, { } }; +MODULE_DEVICE_TABLE(i2c, wf_sat_id); static struct i2c_driver wf_sat_driver = { .driver = { .name = "wf_smu_sat", }, - .attach_adapter = wf_sat_attach, .probe = wf_sat_probe, .remove = wf_sat_remove, .id_table = wf_sat_id, @@ -399,15 +369,13 @@ static int __init sat_sensors_init(void) return i2c_add_driver(&wf_sat_driver); } -#if 0 /* uncomment when module_exit() below is uncommented */ static void __exit sat_sensors_exit(void) { i2c_del_driver(&wf_sat_driver); } -#endif module_init(sat_sensors_init); -/*module_exit(sat_sensors_exit); Uncomment when cleanup is implemented */ +module_exit(sat_sensors_exit); MODULE_AUTHOR("Paul Mackerras <paulus@samba.org>"); MODULE_DESCRIPTION("SMU satellite sensors for PowerMac thermal control"); diff --git a/drivers/ps3/ps3av.c b/drivers/ps3/ps3av.c index a409fa050a1a..93d0a8b7718a 100644 --- a/drivers/ps3/ps3av.c +++ b/drivers/ps3/ps3av.c @@ -338,7 +338,7 @@ int ps3av_do_pkt(u32 cid, u16 send_len, size_t usr_buf_size, mutex_unlock(&ps3av->mutex); return 0; - err: +err: mutex_unlock(&ps3av->mutex); printk(KERN_ERR "%s: failed cid:%x res:%d\n", __func__, cid, res); return res; @@ -477,7 +477,6 @@ int ps3av_set_audio_mode(u32 ch, u32 fs, u32 word_bits, u32 format, u32 source) return 0; } - EXPORT_SYMBOL_GPL(ps3av_set_audio_mode); static int ps3av_set_videomode(void) @@ -501,7 +500,7 @@ static void ps3av_set_videomode_packet(u32 id) video_mode = &video_mode_table[id & PS3AV_MODE_MASK]; - avb_param.num_of_video_pkt = PS3AV_AVB_NUM_VIDEO; /* num of head */ + avb_param.num_of_video_pkt = PS3AV_AVB_NUM_VIDEO; /* num of head */ avb_param.num_of_audio_pkt = 0; avb_param.num_of_av_video_pkt = ps3av->av_hw_conf.num_of_hdmi + ps3av->av_hw_conf.num_of_avmulti; @@ -521,7 +520,7 @@ static void ps3av_set_videomode_packet(u32 id) #ifndef PS3AV_HDMI_YUV if (ps3av->av_port[i] == PS3AV_CMD_AVPORT_HDMI_0 || ps3av->av_port[i] == PS3AV_CMD_AVPORT_HDMI_1) - av_video_cs = RGB8; /* use RGB for HDMI */ + av_video_cs = RGB8; /* use RGB for HDMI */ #endif len += ps3av_cmd_set_av_video_cs(&avb_param.buf[len], ps3av->av_port[i], @@ -590,8 +589,8 @@ static void ps3avd(struct work_struct *work) #define SHIFT_VESA 8 static const struct { - unsigned mask : 19; - unsigned id : 4; + unsigned mask:19; + unsigned id:4; } ps3av_preferred_modes[] = { { PS3AV_RESBIT_WUXGA << SHIFT_VESA, PS3AV_MODE_WUXGA }, { PS3AV_RESBIT_1920x1080P << SHIFT_60, PS3AV_MODE_1080P60 }, @@ -667,7 +666,8 @@ static enum ps3av_mode_num ps3av_hdmi_get_id(struct ps3av_info_monitor *info) return id; } -static void ps3av_monitor_info_dump(const struct ps3av_pkt_av_get_monitor_info *monitor_info) +static void ps3av_monitor_info_dump( + const struct ps3av_pkt_av_get_monitor_info *monitor_info) { const struct ps3av_info_monitor *info = &monitor_info->info; const struct ps3av_info_audio *audio = info->audio; @@ -717,8 +717,8 @@ static void ps3av_monitor_info_dump(const struct ps3av_pkt_av_get_monitor_info * /* audio block */ for (i = 0; i < info->num_of_audio_block; i++) { - pr_debug("audio[%d] type: %02x max_ch: %02x fs: %02x sbit: " - "%02x\n", + pr_debug( + "audio[%d] type: %02x max_ch: %02x fs: %02x sbit: %02x\n", i, audio->type, audio->max_num_of_ch, audio->fs, audio->sbit); audio++; @@ -870,21 +870,18 @@ int ps3av_set_video_mode(int id) return 0; } - EXPORT_SYMBOL_GPL(ps3av_set_video_mode); int ps3av_get_auto_mode(void) { return ps3av_auto_videomode(&ps3av->av_hw_conf); } - EXPORT_SYMBOL_GPL(ps3av_get_auto_mode); int ps3av_get_mode(void) { return ps3av ? ps3av->ps3av_mode : 0; } - EXPORT_SYMBOL_GPL(ps3av_get_mode); /* get resolution by video_mode */ @@ -902,7 +899,6 @@ int ps3av_video_mode2res(u32 id, u32 *xres, u32 *yres) *yres = video_mode_table[id].y; return 0; } - EXPORT_SYMBOL_GPL(ps3av_video_mode2res); /* mute */ @@ -911,7 +907,6 @@ int ps3av_video_mute(int mute) return ps3av_set_av_video_mute(mute ? PS3AV_CMD_MUTE_ON : PS3AV_CMD_MUTE_OFF); } - EXPORT_SYMBOL_GPL(ps3av_video_mute); /* mute analog output only */ @@ -935,7 +930,6 @@ int ps3av_audio_mute(int mute) return ps3av_set_audio_mute(mute ? PS3AV_CMD_MUTE_ON : PS3AV_CMD_MUTE_OFF); } - EXPORT_SYMBOL_GPL(ps3av_audio_mute); static int __devinit ps3av_probe(struct ps3_system_bus_device *dev) |