From 088dd1f81b3577c17c4c4381696bf2105ea0e43a Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 4 Jul 2005 13:24:38 -0700 Subject: [SPARC64]: Add support for IRQ pre-handlers. This allows a PCI controller to shim into IRQ delivery so that DMA queues can be drained, if necessary. If some bus specific code needs to run before an IRQ handler is invoked, the bus driver simply needs to setup the function pointer in bucket->irq_info->pre_handler and the two args bucket->irq_info->pre_handler_arg[12]. The Schizo PCI driver is converted over to use a pre-handler for the DMA write-sync processing it needs when a device is behind a PCI->PCI bus deeper than the top-level APB bridges. While we're here, clean up all of the action allocation and handling. Now, we allocate the irqaction as part of the bucket->irq_info area. There is an array of 4 irqaction (for PCI irq sharing) and a bitmask saying which entries are active. The bucket->irq_info is allocated at build_irq() time, not at request_irq() time. This simplifies request_irq() and free_irq() tremendously. The SMP dynamic IRQ retargetting code got removed in this change too. It was disabled for a few months now, and we can resurrect it in the future if we want. Signed-off-by: David S. Miller --- include/asm-sparc64/irq.h | 49 ++++++++++++++++++-------------------------- include/asm-sparc64/signal.h | 15 -------------- 2 files changed, 20 insertions(+), 44 deletions(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/irq.h b/include/asm-sparc64/irq.h index 018e2e46082..8b70edcb80d 100644 --- a/include/asm-sparc64/irq.h +++ b/include/asm-sparc64/irq.h @@ -16,6 +16,18 @@ #include #include +struct ino_bucket; + +#define MAX_IRQ_DESC_ACTION 4 + +struct irq_desc { + void (*pre_handler)(struct ino_bucket *, void *, void *); + void *pre_handler_arg1; + void *pre_handler_arg2; + u32 action_active_mask; + struct irqaction action[MAX_IRQ_DESC_ACTION]; +}; + /* You should not mess with this directly. That's the job of irq.c. * * If you make changes here, please update hand coded assembler of @@ -42,24 +54,11 @@ struct ino_bucket { /* Miscellaneous flags. */ /*0x06*/unsigned char flags; - /* This is used to deal with IBF_DMA_SYNC on - * Sabre systems. - */ -/*0x07*/unsigned char synctab_ent; - - /* Reference to handler for this IRQ. If this is - * non-NULL this means it is active and should be - * serviced. Else the pending member is set to one - * and later registry of the interrupt checks for - * this condition. - * - * Normally this is just an irq_action structure. - * But, on PCI, if multiple interrupt sources behind - * a bridge have multiple interrupt sources that share - * the same INO bucket, this points to an array of - * pointers to four IRQ action structures. - */ -/*0x08*/void *irq_info; + /* Currently unused. */ +/*0x07*/unsigned char __pad; + + /* Reference to IRQ descriptor for this bucket. */ +/*0x08*/struct irq_desc *irq_info; /* Sun5 Interrupt Clear Register. */ /*0x10*/unsigned long iclr; @@ -69,12 +68,6 @@ struct ino_bucket { }; -#ifdef CONFIG_PCI -extern unsigned long pci_dma_wsync; -extern unsigned long dma_sync_reg_table[256]; -extern unsigned char dma_sync_reg_table_entry; -#endif - /* IMAP/ICLR register defines */ #define IMAP_VALID 0x80000000 /* IRQ Enabled */ #define IMAP_TID_UPA 0x7c000000 /* UPA TargetID */ @@ -90,11 +83,9 @@ extern unsigned char dma_sync_reg_table_entry; #define ICLR_PENDING 0x00000003 /* Pending state */ /* Only 8-bits are available, be careful. -DaveM */ -#define IBF_DMA_SYNC 0x01 /* DMA synchronization behind PCI bridge needed. */ -#define IBF_PCI 0x02 /* Indicates PSYCHO/SABRE/SCHIZO PCI interrupt. */ -#define IBF_ACTIVE 0x04 /* This interrupt is active and has a handler. */ -#define IBF_MULTI 0x08 /* On PCI, indicates shared bucket. */ -#define IBF_INPROGRESS 0x10 /* IRQ is being serviced. */ +#define IBF_PCI 0x02 /* PSYCHO/SABRE/SCHIZO PCI interrupt. */ +#define IBF_ACTIVE 0x04 /* Interrupt is active and has a handler.*/ +#define IBF_INPROGRESS 0x10 /* IRQ is being serviced. */ #define NUM_IVECS (IMAP_INR + 1) extern struct ino_bucket ivector_table[NUM_IVECS]; diff --git a/include/asm-sparc64/signal.h b/include/asm-sparc64/signal.h index becdf1bc592..e3059bb4a46 100644 --- a/include/asm-sparc64/signal.h +++ b/include/asm-sparc64/signal.h @@ -162,21 +162,6 @@ struct sigstack { #define MINSIGSTKSZ 4096 #define SIGSTKSZ 16384 -#ifdef __KERNEL__ -/* - * DJHR - * SA_STATIC_ALLOC is used for the SPARC system to indicate that this - * interrupt handler's irq structure should be statically allocated - * by the request_irq routine. - * The alternative is that arch/sparc/kernel/irq.c has carnal knowledge - * of interrupt usage and that sucks. Also without a flag like this - * it may be possible for the free_irq routine to attempt to free - * statically allocated data.. which is NOT GOOD. - * - */ -#define SA_STATIC_ALLOC 0x80 -#endif - #include struct __new_sigaction { -- cgit From bb6743f4f0aed5c1f09fa77cd8d3973c31792f4f Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 4 Jul 2005 13:26:04 -0700 Subject: [SPARC64]: Do proper DMA IRQ syncing on Tomatillo This was the main impetus behind adding the PCI IRQ shim. In order to properly order DMA writes wrt. interrupts, you have to write to a PCI controller register, then poll for that bit clearing. There is one bit for each interrupt source, and setting this register bit tells Tomatillo to drain all pending DMA from that device. Furthermore, Tomatillo's with revision less than 4 require us to do a block store due to some memory transaction ordering issues it has on JBUS. Signed-off-by: David S. Miller --- include/asm-sparc64/pbm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/pbm.h b/include/asm-sparc64/pbm.h index 4c15610a2ba..38bbbccb406 100644 --- a/include/asm-sparc64/pbm.h +++ b/include/asm-sparc64/pbm.h @@ -145,6 +145,9 @@ struct pci_pbm_info { /* Physical address base of PBM registers. */ unsigned long pbm_regs; + /* Physical address of DMA sync register, if any. */ + unsigned long sync_reg; + /* Opaque 32-bit system bus Port ID. */ u32 portid; -- cgit From e3e01d6005ab4b0877f1fb3efef7f5b745e743be Mon Sep 17 00:00:00 2001 From: "Eddie C. Dost" Date: Wed, 6 Jul 2005 15:41:54 -0700 Subject: [SPARC64]: Fix enable_dma() in asm-sparc64/parport.h Call ebus_dma_enable() before calling ebus_dma_request(), otherwise ebus_dma_request() returns -EINVAL and enable_dma() calls BUG()... Signed-off-by: David S. Miller --- include/asm-sparc64/parport.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h index b7e635544ce..56b5197d789 100644 --- a/include/asm-sparc64/parport.h +++ b/include/asm-sparc64/parport.h @@ -27,12 +27,12 @@ static struct sparc_ebus_info { static __inline__ void enable_dma(unsigned int dmanr) { + ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1); + if (ebus_dma_request(&sparc_ebus_dmas[dmanr].info, sparc_ebus_dmas[dmanr].addr, sparc_ebus_dmas[dmanr].count)) BUG(); - - ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1); } static __inline__ void disable_dma(unsigned int dmanr) -- cgit From a6524813e032fb33bd1de807a98f8453414335e4 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 8 Jul 2005 15:21:51 -0700 Subject: [SPARC64]: Support CONFIG_HZ Signed-off-by: David S. Miller --- include/asm-sparc64/param.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/param.h b/include/asm-sparc64/param.h index 6a12f3ac035..a1cd4974630 100644 --- a/include/asm-sparc64/param.h +++ b/include/asm-sparc64/param.h @@ -1,9 +1,10 @@ -/* $Id: param.h,v 1.2 2000/10/30 21:01:41 davem Exp $ */ #ifndef _ASMSPARC64_PARAM_H #define _ASMSPARC64_PARAM_H +#include + #ifdef __KERNEL__ -# define HZ 1000 /* Internal kernel timer frequency */ +# define HZ CONFIG_HZ /* Internal kernel timer frequency */ # define USER_HZ 100 /* .. some user interfaces are in "ticks" */ # define CLOCKS_PER_SEC (USER_HZ) #endif -- cgit From 9126dfde9e5efd76f9d4246819bdc7ea66de3af0 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 10 Jul 2005 15:11:45 -0700 Subject: [SPARC]: Add ioprio system call support. Signed-off-by: David S. Miller --- include/asm-sparc64/unistd.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/unistd.h b/include/asm-sparc64/unistd.h index 5b8dcf5786a..f59144c6b76 100644 --- a/include/asm-sparc64/unistd.h +++ b/include/asm-sparc64/unistd.h @@ -212,7 +212,7 @@ #define __NR_epoll_create 193 /* Linux Specific */ #define __NR_epoll_ctl 194 /* Linux Specific */ #define __NR_epoll_wait 195 /* Linux Specific */ -/* #define __NR_ulimit 196 Linux Specific */ +#define __NR_ioprio_set 196 /* Linux Specific */ #define __NR_getppid 197 /* Linux Specific */ #define __NR_sigaction 198 /* Linux Specific */ #define __NR_sgetmask 199 /* Linux Specific */ @@ -234,7 +234,7 @@ #define __NR_ipc 215 /* Linux Specific */ #define __NR_sigreturn 216 /* Linux Specific */ #define __NR_clone 217 /* Linux Specific */ -/* #define __NR_modify_ldt 218 Linux Specific - i386 specific, unused */ +#define __NR_ioprio_get 218 /* Linux Specific */ #define __NR_adjtimex 219 /* Linux Specific */ #define __NR_sigprocmask 220 /* Linux Specific */ #define __NR_create_module 221 /* Linux Specific */ -- cgit From bb49bcda15f1bc1a52c7f887db278447f332eaa7 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 10 Jul 2005 16:49:28 -0700 Subject: [SPARC64]: Add SECCOMP support. Signed-off-by: David S. Miller --- include/asm-sparc64/thread_info.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/thread_info.h b/include/asm-sparc64/thread_info.h index 0cd65295692..6b2fbb89bb6 100644 --- a/include/asm-sparc64/thread_info.h +++ b/include/asm-sparc64/thread_info.h @@ -220,7 +220,7 @@ register struct thread_info *current_thread_info_reg asm("g6"); #define TIF_NEWSIGNALS 6 /* wants new-style signals */ #define TIF_32BIT 7 /* 32-bit binary */ #define TIF_NEWCHILD 8 /* just-spawned child process */ -/* TIF_* value 9 is available */ +#define TIF_SECCOMP 9 /* secure computing */ #define TIF_POLLING_NRFLAG 10 #define TIF_SYSCALL_SUCCESS 11 /* NOTE: Thread flags >= 12 should be ones we have no interest @@ -239,6 +239,7 @@ register struct thread_info *current_thread_info_reg asm("g6"); #define _TIF_NEWSIGNALS (1< Date: Sun, 10 Jul 2005 19:29:45 -0700 Subject: [SPARC64]: Add syscall auditing support. Signed-off-by: David S. Miller --- include/asm-sparc64/thread_info.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/thread_info.h b/include/asm-sparc64/thread_info.h index 6b2fbb89bb6..a1d25c06f92 100644 --- a/include/asm-sparc64/thread_info.h +++ b/include/asm-sparc64/thread_info.h @@ -221,7 +221,7 @@ register struct thread_info *current_thread_info_reg asm("g6"); #define TIF_32BIT 7 /* 32-bit binary */ #define TIF_NEWCHILD 8 /* just-spawned child process */ #define TIF_SECCOMP 9 /* secure computing */ -#define TIF_POLLING_NRFLAG 10 +#define TIF_SYSCALL_AUDIT 10 /* syscall auditing active */ #define TIF_SYSCALL_SUCCESS 11 /* NOTE: Thread flags >= 12 should be ones we have no interest * in using in assembly, else we can't use the mask as @@ -229,6 +229,7 @@ register struct thread_info *current_thread_info_reg asm("g6"); */ #define TIF_ABI_PENDING 12 #define TIF_MEMDIE 13 +#define TIF_POLLING_NRFLAG 14 #define _TIF_SYSCALL_TRACE (1< Date: Mon, 11 Jul 2005 13:44:56 -0700 Subject: [SPARC64]: Add missing asm-sparc64/seccomp.h file. Signed-off-by: David S. Miller --- include/asm-sparc64/seccomp.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 include/asm-sparc64/seccomp.h (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/seccomp.h b/include/asm-sparc64/seccomp.h new file mode 100644 index 00000000000..7fcd9968192 --- /dev/null +++ b/include/asm-sparc64/seccomp.h @@ -0,0 +1,21 @@ +#ifndef _ASM_SECCOMP_H + +#include /* already defines TIF_32BIT */ + +#ifndef TIF_32BIT +#error "unexpected TIF_32BIT on sparc64" +#endif + +#include + +#define __NR_seccomp_read __NR_read +#define __NR_seccomp_write __NR_write +#define __NR_seccomp_exit __NR_exit +#define __NR_seccomp_sigreturn __NR_rt_sigreturn + +#define __NR_seccomp_read_32 __NR_read +#define __NR_seccomp_write_32 __NR_write +#define __NR_seccomp_exit_32 __NR_exit +#define __NR_seccomp_sigreturn_32 __NR_sigreturn + +#endif /* _ASM_SECCOMP_H */ -- cgit From c9c3e457de24cca2ca688fa397d93a241f472048 Mon Sep 17 00:00:00 2001 From: David Shaohua Li Date: Fri, 1 Apr 2005 00:07:31 -0500 Subject: [ACPI] PNPACPI vs sound IRQ http://bugme.osdl.org/show_bug.cgi?id=4016 Written-by: David Shaohua Li Acked-by: Adam Belay Signed-off-by: Len Brown --- include/asm-sparc64/pci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/pci.h b/include/asm-sparc64/pci.h index 2a0c85cd1c1..e38d6598d62 100644 --- a/include/asm-sparc64/pci.h +++ b/include/asm-sparc64/pci.h @@ -23,7 +23,7 @@ static inline void pcibios_set_master(struct pci_dev *dev) /* No special bus mastering setup handling */ } -static inline void pcibios_penalize_isa_irq(int irq) +static inline void pcibios_penalize_isa_irq(int irq, int active) { /* We don't do dynamic PCI IRQ allocation */ } -- cgit