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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/mips/netlogic/xlp
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/mips/netlogic/xlp')
-rw-r--r--arch/mips/netlogic/xlp/Makefile2
-rw-r--r--arch/mips/netlogic/xlp/nlm_hal.c111
-rw-r--r--arch/mips/netlogic/xlp/platform.c108
-rw-r--r--arch/mips/netlogic/xlp/setup.c105
-rw-r--r--arch/mips/netlogic/xlp/wakeup.c102
5 files changed, 428 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlp/Makefile b/arch/mips/netlogic/xlp/Makefile
new file mode 100644
index 00000000000..b93ed83474e
--- /dev/null
+++ b/arch/mips/netlogic/xlp/Makefile
@@ -0,0 +1,2 @@
+obj-y += setup.o platform.o nlm_hal.o
+obj-$(CONFIG_SMP) += wakeup.o
diff --git a/arch/mips/netlogic/xlp/nlm_hal.c b/arch/mips/netlogic/xlp/nlm_hal.c
new file mode 100644
index 00000000000..9428e7125fe
--- /dev/null
+++ b/arch/mips/netlogic/xlp/nlm_hal.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+
+#include <asm/mipsregs.h>
+#include <asm/time.h>
+
+#include <asm/netlogic/haldefs.h>
+#include <asm/netlogic/xlp-hal/iomap.h>
+#include <asm/netlogic/xlp-hal/xlp.h>
+#include <asm/netlogic/xlp-hal/pic.h>
+#include <asm/netlogic/xlp-hal/sys.h>
+
+/* These addresses are computed by the nlm_hal_init() */
+uint64_t nlm_io_base;
+uint64_t nlm_sys_base;
+uint64_t nlm_pic_base;
+
+/* Main initialization */
+void nlm_hal_init(void)
+{
+ nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE);
+ nlm_sys_base = nlm_get_sys_regbase(0); /* node 0 */
+ nlm_pic_base = nlm_get_pic_regbase(0); /* node 0 */
+}
+
+int nlm_irq_to_irt(int irq)
+{
+ if (!PIC_IRQ_IS_IRT(irq))
+ return -1;
+
+ switch (irq) {
+ case PIC_UART_0_IRQ:
+ return PIC_IRT_UART_0_INDEX;
+ case PIC_UART_1_IRQ:
+ return PIC_IRT_UART_1_INDEX;
+ default:
+ return -1;
+ }
+}
+
+int nlm_irt_to_irq(int irt)
+{
+ switch (irt) {
+ case PIC_IRT_UART_0_INDEX:
+ return PIC_UART_0_IRQ;
+ case PIC_IRT_UART_1_INDEX:
+ return PIC_UART_1_IRQ;
+ default:
+ return -1;
+ }
+}
+
+unsigned int nlm_get_core_frequency(int core)
+{
+ unsigned int pll_divf, pll_divr, dfs_div, ext_div;
+ unsigned int rstval, dfsval, denom;
+ uint64_t num;
+
+ rstval = nlm_read_sys_reg(nlm_sys_base, SYS_POWER_ON_RESET_CFG);
+ dfsval = nlm_read_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIV_VALUE);
+ pll_divf = ((rstval >> 10) & 0x7f) + 1;
+ pll_divr = ((rstval >> 8) & 0x3) + 1;
+ ext_div = ((rstval >> 30) & 0x3) + 1;
+ dfs_div = ((dfsval >> (core * 4)) & 0xf) + 1;
+
+ num = 800000000ULL * pll_divf;
+ denom = 3 * pll_divr * ext_div * dfs_div;
+ do_div(num, denom);
+ return (unsigned int)num;
+}
+
+unsigned int nlm_get_cpu_frequency(void)
+{
+ return nlm_get_core_frequency(0);
+}
diff --git a/arch/mips/netlogic/xlp/platform.c b/arch/mips/netlogic/xlp/platform.c
new file mode 100644
index 00000000000..1f5e4cba891
--- /dev/null
+++ b/arch/mips/netlogic/xlp/platform.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/pci.h>
+#include <linux/serial_reg.h>
+#include <linux/spinlock.h>
+
+#include <asm/time.h>
+#include <asm/addrspace.h>
+#include <asm/netlogic/haldefs.h>
+#include <asm/netlogic/xlp-hal/iomap.h>
+#include <asm/netlogic/xlp-hal/xlp.h>
+#include <asm/netlogic/xlp-hal/pic.h>
+#include <asm/netlogic/xlp-hal/uart.h>
+
+static unsigned int nlm_xlp_uart_in(struct uart_port *p, int offset)
+{
+ return nlm_read_reg(p->iobase, offset);
+}
+
+static void nlm_xlp_uart_out(struct uart_port *p, int offset, int value)
+{
+ nlm_write_reg(p->iobase, offset, value);
+}
+
+#define PORT(_irq) \
+ { \
+ .irq = _irq, \
+ .regshift = 2, \
+ .iotype = UPIO_MEM32, \
+ .flags = (UPF_SKIP_TEST|UPF_FIXED_TYPE|\
+ UPF_BOOT_AUTOCONF), \
+ .uartclk = XLP_IO_CLK, \
+ .type = PORT_16550A, \
+ .serial_in = nlm_xlp_uart_in, \
+ .serial_out = nlm_xlp_uart_out, \
+ }
+
+static struct plat_serial8250_port xlp_uart_data[] = {
+ PORT(PIC_UART_0_IRQ),
+ PORT(PIC_UART_1_IRQ),
+ {},
+};
+
+static struct platform_device uart_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = xlp_uart_data,
+ },
+};
+
+static int __init nlm_platform_uart_init(void)
+{
+ unsigned long mmio;
+
+ mmio = (unsigned long)nlm_get_uart_regbase(0, 0);
+ xlp_uart_data[0].iobase = mmio;
+ xlp_uart_data[0].membase = (void __iomem *)mmio;
+ xlp_uart_data[0].mapbase = mmio;
+
+ mmio = (unsigned long)nlm_get_uart_regbase(0, 1);
+ xlp_uart_data[1].iobase = mmio;
+ xlp_uart_data[1].membase = (void __iomem *)mmio;
+ xlp_uart_data[1].mapbase = mmio;
+
+ return platform_device_register(&uart_device);
+}
+
+arch_initcall(nlm_platform_uart_init);
diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c
new file mode 100644
index 00000000000..acb677a1227
--- /dev/null
+++ b/arch/mips/netlogic/xlp/setup.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/serial_8250.h>
+#include <linux/pm.h>
+
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <asm/bootinfo.h>
+
+#include <linux/of_fdt.h>
+
+#include <asm/netlogic/haldefs.h>
+#include <asm/netlogic/common.h>
+
+#include <asm/netlogic/xlp-hal/iomap.h>
+#include <asm/netlogic/xlp-hal/xlp.h>
+#include <asm/netlogic/xlp-hal/sys.h>
+
+unsigned long nlm_common_ebase = 0x0;
+
+/* default to uniprocessor */
+uint32_t nlm_coremask = 1, nlm_cpumask = 1;
+int nlm_threads_per_core = 1;
+
+static void nlm_linux_exit(void)
+{
+ nlm_write_sys_reg(nlm_sys_base, SYS_CHIP_RESET, 1);
+ for ( ; ; )
+ cpu_wait();
+}
+
+void __init plat_mem_setup(void)
+{
+ panic_timeout = 5;
+ _machine_restart = (void (*)(char *))nlm_linux_exit;
+ _machine_halt = nlm_linux_exit;
+ pm_power_off = nlm_linux_exit;
+}
+
+const char *get_system_type(void)
+{
+ return "Netlogic XLP Series";
+}
+
+void __init prom_free_prom_memory(void)
+{
+ /* Nothing yet */
+}
+
+void xlp_mmu_init(void)
+{
+ write_c0_config6(read_c0_config6() | 0x24);
+ current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
+ write_c0_config7(PM_DEFAULT_MASK >>
+ (13 + (ffz(PM_DEFAULT_MASK >> 13) / 2)));
+}
+
+void __init prom_init(void)
+{
+ void *fdtp;
+
+ fdtp = (void *)(long)fw_arg0;
+ xlp_mmu_init();
+ nlm_hal_init();
+ early_init_devtree(fdtp);
+
+ nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1));
+#ifdef CONFIG_SMP
+ nlm_wakeup_secondary_cpus(0xffffffff);
+ register_smp_ops(&nlm_smp_ops);
+#endif
+}
diff --git a/arch/mips/netlogic/xlp/wakeup.c b/arch/mips/netlogic/xlp/wakeup.c
new file mode 100644
index 00000000000..44d923ff384
--- /dev/null
+++ b/arch/mips/netlogic/xlp/wakeup.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/threads.h>
+
+#include <asm/asm.h>
+#include <asm/asm-offsets.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/string.h>
+
+#include <asm/netlogic/haldefs.h>
+#include <asm/netlogic/common.h>
+#include <asm/netlogic/mips-extns.h>
+
+#include <asm/netlogic/xlp-hal/iomap.h>
+#include <asm/netlogic/xlp-hal/pic.h>
+#include <asm/netlogic/xlp-hal/xlp.h>
+#include <asm/netlogic/xlp-hal/sys.h>
+
+static void xlp_enable_secondary_cores(void)
+{
+ uint32_t core, value, coremask, syscoremask;
+ int count;
+
+ /* read cores in reset from SYS block */
+ syscoremask = nlm_read_sys_reg(nlm_sys_base, SYS_CPU_RESET);
+
+ /* update user specified */
+ nlm_coremask = nlm_coremask & (syscoremask | 1);
+
+ for (core = 1; core < 8; core++) {
+ coremask = 1 << core;
+ if ((nlm_coremask & coremask) == 0)
+ continue;
+
+ /* Enable CPU clock */
+ value = nlm_read_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIS_CTRL);
+ value &= ~coremask;
+ nlm_write_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIS_CTRL, value);
+
+ /* Remove CPU Reset */
+ value = nlm_read_sys_reg(nlm_sys_base, SYS_CPU_RESET);
+ value &= ~coremask;
+ nlm_write_sys_reg(nlm_sys_base, SYS_CPU_RESET, value);
+
+ /* Poll for CPU to mark itself coherent */
+ count = 100000;
+ do {
+ value = nlm_read_sys_reg(nlm_sys_base,
+ SYS_CPU_NONCOHERENT_MODE);
+ } while ((value & coremask) != 0 && count-- > 0);
+
+ if (count == 0)
+ pr_err("Failed to enable core %d\n", core);
+ }
+}
+
+void xlp_wakeup_secondary_cpus(void)
+{
+ /*
+ * In case of u-boot, the secondaries are in reset
+ * first wakeup core 0 threads
+ */
+ xlp_boot_core0_siblings();
+
+ /* now get other cores out of reset */
+ xlp_enable_secondary_cores();
+}