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-rw-r--r--linux-2.6-crash-driver.patch385
1 files changed, 385 insertions, 0 deletions
diff --git a/linux-2.6-crash-driver.patch b/linux-2.6-crash-driver.patch
new file mode 100644
index 000000000..7b518bb88
--- /dev/null
+++ b/linux-2.6-crash-driver.patch
@@ -0,0 +1,385 @@
+From df42d15cd28f468ecd4c30465b98a53cce90617c Mon Sep 17 00:00:00 2001
+From: Kyle McMartin <kyle@phobos.i.jkkm.org>
+Date: Tue, 30 Mar 2010 00:16:25 -0400
+Subject: dev-crash-driver.patch
+
+---
+ arch/ia64/include/asm/crash.h | 90 +++++++++++++++++++++++++++++
+ arch/ia64/kernel/ia64_ksyms.c | 3 +
+ arch/x86/include/asm/crash.h | 75 ++++++++++++++++++++++++
+ arch/x86/mm/ioremap.c | 2 +
+ drivers/char/Kconfig | 2 +
+ drivers/char/Makefile | 2 +
+ drivers/char/crash.c | 128 +++++++++++++++++++++++++++++++++++++++++
+ 7 files changed, 302 insertions(+), 0 deletions(-)
+ create mode 100644 arch/ia64/include/asm/crash.h
+ create mode 100644 arch/x86/include/asm/crash.h
+ create mode 100644 drivers/char/crash.c
+
+diff --git a/arch/ia64/include/asm/crash.h b/arch/ia64/include/asm/crash.h
+new file mode 100644
+index 0000000..541af84
+--- /dev/null
++++ b/arch/ia64/include/asm/crash.h
+@@ -0,0 +1,90 @@
++#ifndef _ASM_IA64_CRASH_H
++#define _ASM_IA64_CRASH_H
++
++/*
++ * linux/include/asm-ia64/crash.h
++ *
++ * Copyright (c) 2004 Red Hat, Inc. All rights reserved.
++ *
++ * 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, or (at your option)
++ * any later version.
++ *
++ * 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.
++ *
++ */
++
++#ifdef __KERNEL__
++
++#include <linux/efi.h>
++#include <linux/mm.h>
++#include <asm/mmzone.h>
++
++static inline void *
++map_virtual(u64 offset, struct page **pp)
++{
++ struct page *page;
++ unsigned long pfn;
++ u32 type;
++
++ if (REGION_NUMBER(offset) == 5) {
++ char byte;
++
++ if (__get_user(byte, (char *)offset) == 0)
++ return (void *)offset;
++ else
++ return NULL;
++ }
++
++ switch (type = efi_mem_type(offset))
++ {
++ case EFI_LOADER_CODE:
++ case EFI_LOADER_DATA:
++ case EFI_BOOT_SERVICES_CODE:
++ case EFI_BOOT_SERVICES_DATA:
++ case EFI_CONVENTIONAL_MEMORY:
++ break;
++
++ default:
++ printk(KERN_INFO
++ "crash memory driver: invalid memory type for %lx: %d\n",
++ offset, type);
++ return NULL;
++ }
++
++ pfn = offset >> PAGE_SHIFT;
++
++ if (!pfn_valid(pfn)) {
++ printk(KERN_INFO
++ "crash memory driver: invalid pfn: %lx )\n", pfn);
++ return NULL;
++ }
++
++ page = pfn_to_page(pfn);
++
++ if (!page->virtual) {
++ printk(KERN_INFO
++ "crash memory driver: offset: %lx page: %lx page->virtual: NULL\n",
++ offset, (unsigned long)page);
++ return NULL;
++ }
++
++ return (page->virtual + (offset & (PAGE_SIZE-1)));
++}
++
++static inline void unmap_virtual(struct page *page)
++{
++ return;
++}
++
++#endif /* __KERNEL__ */
++
++#endif /* _ASM_IA64_CRASH_H */
+diff --git a/arch/ia64/kernel/ia64_ksyms.c b/arch/ia64/kernel/ia64_ksyms.c
+index 7f4a0ed..552fe24 100644
+--- a/arch/ia64/kernel/ia64_ksyms.c
++++ b/arch/ia64/kernel/ia64_ksyms.c
+@@ -84,6 +84,9 @@ EXPORT_SYMBOL(ia64_save_scratch_fpregs);
+ #include <asm/unwind.h>
+ EXPORT_SYMBOL(unw_init_running);
+
++#include <linux/efi.h>
++EXPORT_SYMBOL_GPL(efi_mem_type);
++
+ #if defined(CONFIG_IA64_ESI) || defined(CONFIG_IA64_ESI_MODULE)
+ extern void esi_call_phys (void);
+ EXPORT_SYMBOL_GPL(esi_call_phys);
+diff --git a/arch/x86/include/asm/crash.h b/arch/x86/include/asm/crash.h
+new file mode 100644
+index 0000000..dfcc006
+--- /dev/null
++++ b/arch/x86/include/asm/crash.h
+@@ -0,0 +1,75 @@
++#ifndef _ASM_I386_CRASH_H
++#define _ASM_I386_CRASH_H
++
++/*
++ * linux/include/asm-i386/crash.h
++ *
++ * Copyright (c) 2004 Red Hat, Inc. All rights reserved.
++ *
++ * 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, or (at your option)
++ * any later version.
++ *
++ * 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.
++ *
++ */
++
++#ifdef __KERNEL__
++
++#include <linux/mm.h>
++#include <linux/highmem.h>
++#include <asm/mmzone.h>
++
++extern int page_is_ram(unsigned long);
++
++static inline void *
++map_virtual(u64 offset, struct page **pp)
++{
++ struct page *page;
++ unsigned long pfn;
++ void *vaddr;
++
++ pfn = (unsigned long)(offset >> PAGE_SHIFT);
++
++ if (!page_is_ram(pfn)) {
++ printk(KERN_INFO
++ "crash memory driver: !page_is_ram(pfn: %lx)\n", pfn);
++ return NULL;
++ }
++
++ if (!pfn_valid(pfn)) {
++ printk(KERN_INFO
++ "crash memory driver: invalid pfn: %lx )\n", pfn);
++ return NULL;
++ }
++
++ page = pfn_to_page(pfn);
++
++ vaddr = kmap(page);
++ if (!vaddr) {
++ printk(KERN_INFO
++ "crash memory driver: pfn: %lx kmap(page: %lx) failed\n",
++ pfn, (unsigned long)page);
++ return NULL;
++ }
++
++ *pp = page;
++ return (vaddr + (offset & (PAGE_SIZE-1)));
++}
++
++static inline void unmap_virtual(struct page *page)
++{
++ kunmap(page);
++}
++
++#endif /* __KERNEL__ */
++
++#endif /* _ASM_I386_CRASH_H */
+diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
+index 5eb1ba7..3e525d2 100644
+--- a/arch/x86/mm/ioremap.c
++++ b/arch/x86/mm/ioremap.c
+@@ -24,6 +24,8 @@
+
+ #include "physaddr.h"
+
++EXPORT_SYMBOL_GPL(page_is_ram);
++
+ /*
+ * Fix up the linear direct mapping of the kernel to avoid cache attribute
+ * conflicts.
+diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
+index 3141dd3..153658c 100644
+--- a/drivers/char/Kconfig
++++ b/drivers/char/Kconfig
+@@ -471,6 +471,8 @@ config LEGACY_PTYS
+ security. This option enables these legacy devices; on most
+ systems, it is safe to say N.
+
++config CRASH
++ tristate "Crash Utility memory driver"
+
+ config LEGACY_PTY_COUNT
+ int "Maximum number of legacy PTY in use"
+diff --git a/drivers/char/Makefile b/drivers/char/Makefile
+index f957edf..604c418 100644
+--- a/drivers/char/Makefile
++++ b/drivers/char/Makefile
+@@ -111,6 +111,8 @@ obj-$(CONFIG_PS3_FLASH) += ps3flash.o
+ obj-$(CONFIG_JS_RTC) += js-rtc.o
+ js-rtc-y = rtc.o
+
++obj-$(CONFIG_CRASH) += crash.o
++
+ # Files generated that shall be removed upon make clean
+ clean-files := consolemap_deftbl.c defkeymap.c
+
+diff --git a/drivers/char/crash.c b/drivers/char/crash.c
+new file mode 100644
+index 0000000..e5437de
+--- /dev/null
++++ b/drivers/char/crash.c
+@@ -0,0 +1,128 @@
++/*
++ * linux/drivers/char/crash.c
++ *
++ * Copyright (C) 2004 Dave Anderson <anderson@redhat.com>
++ * Copyright (C) 2004 Red Hat, 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; either version 2, or (at your option)
++ * any later version.
++ *
++ * 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.
++ *
++ *****************************************************************************/
++
++#include <linux/module.h>
++#include <linux/types.h>
++#include <linux/miscdevice.h>
++#include <linux/init.h>
++#include <asm/io.h>
++#include <asm/uaccess.h>
++#include <asm/types.h>
++#include <asm/crash.h>
++
++#define CRASH_VERSION "1.0"
++
++/*
++ * These are the file operation functions that allow crash utility
++ * access to physical memory.
++ */
++
++static loff_t
++crash_llseek(struct file * file, loff_t offset, int orig)
++{
++ switch (orig) {
++ case 0:
++ file->f_pos = offset;
++ return file->f_pos;
++ case 1:
++ file->f_pos += offset;
++ return file->f_pos;
++ default:
++ return -EINVAL;
++ }
++}
++
++/*
++ * Determine the page address for an address offset value,
++ * get a virtual address for it, and copy it out.
++ * Accesses must fit within a page.
++ */
++static ssize_t
++crash_read(struct file *file, char *buf, size_t count, loff_t *poff)
++{
++ void *vaddr;
++ struct page *page;
++ u64 offset;
++ ssize_t read;
++
++ offset = *poff;
++ if (offset >> PAGE_SHIFT != (offset+count-1) >> PAGE_SHIFT)
++ return -EINVAL;
++
++ vaddr = map_virtual(offset, &page);
++ if (!vaddr)
++ return -EFAULT;
++
++ if (copy_to_user(buf, vaddr, count)) {
++ unmap_virtual(page);
++ return -EFAULT;
++ }
++ unmap_virtual(page);
++
++ read = count;
++ *poff += read;
++ return read;
++}
++
++static struct file_operations crash_fops = {
++ .owner = THIS_MODULE,
++ .llseek = crash_llseek,
++ .read = crash_read,
++};
++
++static struct miscdevice crash_dev = {
++ MISC_DYNAMIC_MINOR,
++ "crash",
++ &crash_fops
++};
++
++static int __init
++crash_init(void)
++{
++ int ret;
++
++ ret = misc_register(&crash_dev);
++ if (ret) {
++ printk(KERN_ERR
++ "crash memory driver: cannot misc_register (MISC_DYNAMIC_MINOR)\n");
++ goto out;
++ }
++
++ ret = 0;
++ printk(KERN_INFO "crash memory driver: version %s\n", CRASH_VERSION);
++out:
++ return ret;
++}
++
++static void __exit
++crash_cleanup_module(void)
++{
++ misc_deregister(&crash_dev);
++}
++
++module_init(crash_init);
++module_exit(crash_cleanup_module);
++
++MODULE_LICENSE("GPL");
+--
+1.7.0.1
+