[PATCH] [18/48] Suspend2 2.1.9.8 for 2.6.12: 501-tlb-flushing-functions.patch

From: Nigel Cunningham
Date: Tue Jul 05 2005 - 21:35:49 EST

diff -ruNp 510-version-specific-mac.patch-old/arch/ppc/Kconfig 510-version-specific-mac.patch-new/arch/ppc/Kconfig
--- 510-version-specific-mac.patch-old/arch/ppc/Kconfig 2005-06-20 11:46:44.000000000 +1000
+++ 510-version-specific-mac.patch-new/arch/ppc/Kconfig 2005-07-04 23:14:19.000000000 +1000
@@ -1081,7 +1081,7 @@ config PROC_HARDWARE

source "drivers/zorro/Kconfig"

-source kernel/power/Kconfig
+source "kernel/power/Kconfig"

endmenu

diff -ruNp 510-version-specific-mac.patch-old/arch/ppc/kernel/signal.c 510-version-specific-mac.patch-new/arch/ppc/kernel/signal.c
--- 510-version-specific-mac.patch-old/arch/ppc/kernel/signal.c 2005-07-06 11:25:14.000000000 +1000
+++ 510-version-specific-mac.patch-new/arch/ppc/kernel/signal.c 2005-07-04 23:14:19.000000000 +1000
@@ -711,6 +711,15 @@ int do_signal(sigset_t *oldset, struct p
goto no_signal;
}

+ if (freezing(current)) {
+ try_to_freeze();
+ signr = 0;
+ ret = regs->gpr[3];
+ recalc_sigpending();
+ if (!signal_pending(current))
+ goto no_signal;
+ }
+
if (!oldset)
oldset = &current->blocked;

diff -ruNp 510-version-specific-mac.patch-old/arch/ppc/kernel/swsusp.c 510-version-specific-mac.patch-new/arch/ppc/kernel/swsusp.c
--- 510-version-specific-mac.patch-old/arch/ppc/kernel/swsusp.c 1970-01-01 10:00:00.000000000 +1000
+++ 510-version-specific-mac.patch-new/arch/ppc/kernel/swsusp.c 2005-07-04 23:14:19.000000000 +1000
@@ -0,0 +1,88 @@
+/*
+ * Written by Hu Gang (hugang@xxxxxxxxxxxx)
+ *
+ * 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; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/poll.h>
+#include <linux/delay.h>
+#include <linux/sysrq.h>
+#include <linux/proc_fs.h>
+#include <linux/irq.h>
+#include <linux/pm.h>
+#include <linux/adb.h>
+#include <linux/cuda.h>
+#include <linux/pmu.h>
+#include <linux/device.h>
+#include <linux/suspend.h>
+#include <asm/mmu_context.h>
+#include <asm/uaccess.h>
+#include <asm/suspend.h>
+
+#include "cpu_context.h"
+
+extern suspend_pagedir_t *pagedir_nosave __nosavedata;
+extern int nr_copy_pages __nosavedata;
+
+extern asmlinkage int swsusp_save(void);
+
+static void inline do_swsusp_copyback(void)
+{
+ register int i = 0;
+
+ for (i = 0; i < nr_copy_pages; i++) {
+ register int loop;
+ register unsigned long *orig, *copy;
+
+ copy = (unsigned long *)pagedir_nosave[i].address;
+ orig = (unsigned long *)pagedir_nosave[i].orig_address;
+
+ for (loop = 0;
+ loop < (PAGE_SIZE / sizeof(unsigned long));
+ loop ++)
+ *(orig + loop) = *(copy + loop);
+ }
+}
+
+static struct saved_context swsusp_saved_context;
+
+void save_processor_state(void)
+{
+ __save_processor_state(&swsusp_saved_context);
+}
+
+void restore_processor_state(void)
+{
+ __restore_processor_state(&swsusp_saved_context);
+}
+
+void __flush_tlb_global(void)
+{
+ /* do nothing */
+}
+
+static struct saved_context saved_context;
+
+void swsusp_arch_suspend(void)
+{
+ save_context();
+ __save_processor_state(&saved_context);
+ swsusp_save();
+}
+
+void swsusp_arch_resume(void)
+{
+ save_context();
+ do_swsusp_copyback();
+ __restore_processor_state(&saved_context);
+ restore_context();
+}
diff -ruNp 510-version-specific-mac.patch-old/arch/ppc/kernel/vmlinux.lds.S 510-version-specific-mac.patch-new/arch/ppc/kernel/vmlinux.lds.S
--- 510-version-specific-mac.patch-old/arch/ppc/kernel/vmlinux.lds.S 2005-06-20 11:46:45.000000000 +1000
+++ 510-version-specific-mac.patch-new/arch/ppc/kernel/vmlinux.lds.S 2005-07-04 23:14:19.000000000 +1000
@@ -80,6 +80,12 @@ SECTIONS
. = ALIGN(4096);
__nosave_end = .;

+ . = ALIGN(4096);
+ __nosave_begin = .;
+ .data_nosave : { *(.data.nosave) }
+ . = ALIGN(4096);
+ __nosave_end = .;
+
. = ALIGN(32);
.data.cacheline_aligned : { *(.data.cacheline_aligned) }

diff -ruNp 510-version-specific-mac.patch-old/arch/ppc/mm/init.c 510-version-specific-mac.patch-new/arch/ppc/mm/init.c
--- 510-version-specific-mac.patch-old/arch/ppc/mm/init.c 2005-06-20 11:46:45.000000000 +1000
+++ 510-version-specific-mac.patch-new/arch/ppc/mm/init.c 2005-07-04 23:14:19.000000000 +1000
@@ -32,6 +32,7 @@
#include <linux/highmem.h>
#include <linux/initrd.h>
#include <linux/pagemap.h>
+#include <linux/suspend.h>

#include <asm/pgalloc.h>
#include <asm/prom.h>
@@ -150,6 +151,7 @@ static void free_sec(unsigned long start

while (start < end) {
ClearPageReserved(virt_to_page(start));
+ ClearPageNosave(virt_to_page(start));
set_page_count(virt_to_page(start), 1);
free_page(start);
cnt++;
@@ -190,6 +192,7 @@ void free_initrd_mem(unsigned long start

for (; start < end; start += PAGE_SIZE) {
ClearPageReserved(virt_to_page(start));
+ ClearPageNosave(virt_to_page(start));
set_page_count(virt_to_page(start), 1);
free_page(start);
totalram_pages++;
@@ -425,8 +428,10 @@ void __init mem_init(void)
/* if we are booted from BootX with an initial ramdisk,
make sure the ramdisk pages aren't reserved. */
if (initrd_start) {
- for (addr = initrd_start; addr < initrd_end; addr += PAGE_SIZE)
+ for (addr = initrd_start; addr < initrd_end; addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
+ ClearPageNosave(virt_to_page(addr));
+ }
}
#endif /* CONFIG_BLK_DEV_INITRD */

@@ -452,6 +457,12 @@ void __init mem_init(void)
addr += PAGE_SIZE) {
if (!PageReserved(virt_to_page(addr)))
continue;
+ /*
+ * Mark nosave pages
+ */
+ if (addr >= (void *)&__nosave_begin && addr < (void *)&__nosave_end)
+ SetPageNosave(virt_to_page(addr));
+
if (addr < (ulong) etext)
codepages++;
else if (addr >= (unsigned long)&__init_begin
@@ -469,6 +480,7 @@ void __init mem_init(void)
struct page *page = mem_map + pfn;

ClearPageReserved(page);
+ ClearPageNosave(page);
set_bit(PG_highmem, &page->flags);
set_page_count(page, 1);
__free_page(page);
diff -ruNp 510-version-specific-mac.patch-old/arch/ppc/platforms/pmac_feature.c 510-version-specific-mac.patch-new/arch/ppc/platforms/pmac_feature.c
--- 510-version-specific-mac.patch-old/arch/ppc/platforms/pmac_feature.c 2005-06-20 11:46:45.000000000 +1000
+++ 510-version-specific-mac.patch-new/arch/ppc/platforms/pmac_feature.c 2005-07-04 23:14:19.000000000 +1000
@@ -2291,7 +2291,10 @@ static struct pmac_mb_def pmac_mb_defs[]
},
{ "PowerBook5,1", "PowerBook G4 17\"",
PMAC_TYPE_UNKNOWN_INTREPID, intrepid_features,
- PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
+ PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE
+#ifdef CONFIG_SOFTWARE_REPLACE_SLEEP
+ | PMAC_MB_CAN_SLEEP,
+#endif
},
{ "PowerBook5,2", "PowerBook G4 15\"",
PMAC_TYPE_UNKNOWN_INTREPID, intrepid_features,
diff -ruNp 510-version-specific-mac.patch-old/arch/ppc/syslib/of_device.c 510-version-specific-mac.patch-new/arch/ppc/syslib/of_device.c
--- 510-version-specific-mac.patch-old/arch/ppc/syslib/of_device.c 2004-11-03 21:55:03.000000000 +1100
+++ 510-version-specific-mac.patch-new/arch/ppc/syslib/of_device.c 2005-07-04 23:14:19.000000000 +1000
@@ -104,7 +104,7 @@ static int of_device_remove(struct devic
return 0;
}

-static int of_device_suspend(struct device *dev, u32 state)
+static int of_device_suspend(struct device *dev, pm_message_t state)
{
struct of_device * of_dev = to_of_device(dev);
struct of_platform_driver * drv = to_of_platform_driver(dev->driver);
diff -ruNp 510-version-specific-mac.patch-old/drivers/macintosh/Kconfig 510-version-specific-mac.patch-new/drivers/macintosh/Kconfig
--- 510-version-specific-mac.patch-old/drivers/macintosh/Kconfig 2005-06-20 11:46:55.000000000 +1000
+++ 510-version-specific-mac.patch-new/drivers/macintosh/Kconfig 2005-07-04 23:14:19.000000000 +1000
@@ -195,4 +195,8 @@ config ANSLCD
tristate "Support for ANS LCD display"
depends on ADB_CUDA && PPC_PMAC

+config SOFTWARE_REPLACE_SLEEP
+ bool "Using Software suspend replace broken sleep function"
+ depends on SOFTWARE_SUSPEND2
+
endmenu
diff -ruNp 510-version-specific-mac.patch-old/drivers/macintosh/via-pmu.c 510-version-specific-mac.patch-new/drivers/macintosh/via-pmu.c
--- 510-version-specific-mac.patch-old/drivers/macintosh/via-pmu.c 2005-07-06 11:25:14.000000000 +1000
+++ 510-version-specific-mac.patch-new/drivers/macintosh/via-pmu.c 2005-07-04 23:14:19.000000000 +1000
@@ -2894,6 +2894,13 @@ pmu_ioctl(struct inode * inode, struct f
return -EACCES;
if (sleep_in_progress)
return -EBUSY;
+#ifdef CONFIG_SOFTWARE_REPLACE_SLEEP
+ {
+ extern void software_suspend_pending(void);
+ software_suspend_pending();
+ return (0);
+ }
+#endif
sleep_in_progress = 1;
switch (pmu_kind) {
case PMU_OHARE_BASED:
diff -ruNp 510-version-specific-mac.patch-old/include/asm-ppc/cpu_context.h 510-version-specific-mac.patch-new/include/asm-ppc/cpu_context.h
--- 510-version-specific-mac.patch-old/include/asm-ppc/cpu_context.h 1970-01-01 10:00:00.000000000 +1000
+++ 510-version-specific-mac.patch-new/include/asm-ppc/cpu_context.h 2005-07-04 23:14:19.000000000 +1000
@@ -0,0 +1,98 @@
+/*
+ * Written by Hu Gang (hugang@xxxxxxxxxxxx)
+ *
+ * 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; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+/* image of the saved processor states */
+struct saved_context {
+ u32 lr, cr, sp, r2;
+ u32 r[20]; /* r12 - r31 */
+ u32 sprg[4];
+ u32 msr, sdr1, tb1, tb2;
+} __attribute__((packed));
+
+inline static void __save_processor_state(struct saved_context *s)
+{
+ /*asm volatile ("mflr 0; stw 0,%0" : "=m" (s->lr));*/
+ asm volatile ("mfcr 0; stw 0,%0" : "=m" (s->cr));
+ asm volatile ("stw 1,%0" : "=m" (s->sp));
+ asm volatile ("stw 2,%0" : "=m" (s->r2));
+ asm volatile ("stmw 12,%0" : "=m" (s->r));
+
+ /* Save MSR & SDR1 */
+ asm volatile ("mfmsr 4; stw 4,%0" : "=m" (s->msr));
+ asm volatile ("mfsdr1 4; stw 4,%0": "=m" (s->sdr1));
+
+ /* Get a stable timebase and save it */
+ asm volatile ("1:\n"
+ "mftbu 4;stw 4,%0\n"
+ "mftb 5;stw 5,%1\n"
+ "mftbu 3\n"
+ "cmpw 3,4;\n"
+ "bne 1b" :
+ "=m" (s->tb1),
+ "=m" (s->tb2));
+
+ /* Save SPRGs */
+ asm volatile ("mfsprg 4,0; stw 4,%0 " : "=m" (s->sprg[0]));
+ asm volatile ("mfsprg 4,1; stw 4,%0 " : "=m" (s->sprg[1]));
+ asm volatile ("mfsprg 4,2; stw 4,%0 " : "=m" (s->sprg[2]));
+ asm volatile ("mfsprg 4,3; stw 4,%0 " : "=m" (s->sprg[3]));
+}
+
+inline static void __restore_processor_state(struct saved_context *s)
+{
+ /* Restore the BATs, and SDR1 */
+ asm volatile ("lwz 4,%0; mtsdr1 4" : "=m" (s->sdr1));
+ /* asm volatile ("lwz 3,%0" : "=m" (saved_context.msr)); */
+
+ asm volatile ("lwz 4,%0; mtsprg 0,4": "=m" (s->sprg[0]));
+ asm volatile ("lwz 4,%0; mtsprg 1,4": "=m" (s->sprg[1]));
+ asm volatile ("lwz 4,%0; mtsprg 2,4": "=m" (s->sprg[2]));
+ asm volatile ("lwz 4,%0; mtsprg 3,4": "=m" (s->sprg[3]));
+
+ /* Restore TB */
+ asm volatile ("li 3,0; mttbl 3; \n"
+ "lwz 3,%0\n; lwz 4,%1\n"
+ "mttbu 3; mttbl 4" :
+ "=m" (s->tb1),
+ "=m" (s->tb2));
+
+ /* Restore the callee-saved registers and return */
+ asm volatile ("lmw 12,%0" : "=m" (s->r));
+ asm volatile ("lwz 2,%0" : "=m" (s->r2));
+ asm volatile ("lwz 1,%0" : "=m" (s->sp));
+ asm volatile ("lwz 0,%0; mtcr 0" : "=m" (s->cr));
+ /*asm volatile ("lwz 0,%0; mtlr 0" : "=m" (s->lr));*/
+}
+
+static inline void save_context(void)
+{
+ printk("pmu suspend\n");
+ pmu_suspend();
+}
+
+extern void enable_kernel_altivec(void);
+
+static inline void restore_context(void)
+{
+ printk("set context: <%p>\n", current);
+ set_context(current->active_mm->context,
+ current->active_mm->pgd);
+
+ printk("pmu_resume\n");
+ pmu_resume();
+
+#ifdef CONFIG_ALTIVEC
+ if (cur_cpu_spec[0]->cpu_features & CPU_FTR_ALTIVEC) {
+ printk("enable altivec\n");
+ enable_kernel_altivec();
+ }
+#endif
+ printk("enable fp\n");
+ enable_kernel_fp();
+}
diff -ruNp 510-version-specific-mac.patch-old/include/asm-ppc/suspend2.h 510-version-specific-mac.patch-new/include/asm-ppc/suspend2.h
--- 510-version-specific-mac.patch-old/include/asm-ppc/suspend2.h 1970-01-01 10:00:00.000000000 +1000
+++ 510-version-specific-mac.patch-new/include/asm-ppc/suspend2.h 2005-07-04 23:14:19.000000000 +1000
@@ -0,0 +1,74 @@
+/*
+ * Written by Hu Gang (hugang@xxxxxxxxxxxx)
+ *
+ * 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; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include "asm/cpu_context.h"
+
+static struct saved_context suspend_saved_context;
+
+static inline void suspend2_save_processor_context(void)
+{
+ __save_processor_state(&suspend_saved_context);
+}
+
+static inline void suspend2_restore_processor_context(void)
+{
+ __restore_processor_state(&suspend_saved_context);
+
+ restore_context();
+}
+
+static inline void suspend2_pre_copy(void)
+{
+}
+
+static inline void suspend2_post_copy(void)
+{
+}
+
+static inline void suspend2_pre_copyback(void)
+{
+ save_context();
+}
+
+static inline void suspend2_post_copyback(void)
+{
+}
+
+static inline void suspend2_flush_caches(void)
+{
+}
+
+static unsigned long new_stack_page;
+
+static inline void move_stack_to_nonconflicing_area(void)
+{
+ unsigned long old_stack, src;
+
+ new_stack_page =
+ suspend2_get_nonconflicting_pages(get_order(THREAD_SIZE));
+
+ BUG_ON(!new_stack_page);
+
+ local_irq_disable();
+
+ /* geting stack address */
+ asm volatile ("stw %%r1, %0" : "=m" (old_stack));
+
+ src = old_stack & (~(THREAD_SIZE - 1));
+
+ /* Copy stack */
+ memcpy((void*)new_stack_page, (void*)src, THREAD_SIZE);
+
+ new_stack_page += (old_stack - src);
+
+ /* switch to new stack */
+ asm volatile ("lwz %%r1, %0" : "=m" (new_stack_page));
+
+ local_irq_enable();
+}
diff -ruNp 510-version-specific-mac.patch-old/kernel/kthread.c 510-version-specific-mac.patch-new/kernel/kthread.c
--- 510-version-specific-mac.patch-old/kernel/kthread.c 2005-07-06 11:25:15.000000000 +1000
+++ 510-version-specific-mac.patch-new/kernel/kthread.c 2005-07-04 23:14:19.000000000 +1000
@@ -94,10 +94,6 @@ static int kthread(void *_create)
current->flags |= flags_used;
atomic_set(&(current->freeze_status), 0);

- /* Set our freezer flags */
- current->flags &= ~(PF_SYNCTHREAD | PF_NOFREEZE);
- current->flags |= create->freezer_flags;
-
/* OK, tell user we're spawned, wait for stop or wakeup */
__set_current_state(TASK_INTERRUPTIBLE);
complete(&create->started);

-
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