File linux-2.6-crash-driver.patch of Package kernel

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File linux-2.6-crash-driver.patch of Package kernel

diff -urNp --exclude-from=/home/davej/.exclude linux-1050/arch/i386/mm/init.c linux-1060/arch/i386/mm/init.c
--- linux-1050/arch/i386/mm/init.c
+++ linux-1060/arch/i386/mm/init.c
@@ -248,6 +248,8 @@ int devmem_is_allowed(unsigned long page
    return 0;
 }
 
+EXPORT_SYMBOL_GPL(page_is_ram);
+
 #ifdef CONFIG_HIGHMEM
 pte_t *kmap_pte;
 pgprot_t kmap_prot;
diff -urNp --exclude-from=/home/davej/.exclude linux-1050/arch/ia64/kernel/ia64_ksyms.c linux-1060/arch/ia64/kernel/ia64_ksyms.c
--- linux-1050/arch/ia64/kernel/ia64_ksyms.c
+++ linux-1060/arch/ia64/kernel/ia64_ksyms.c
@@ -106,6 +106,9 @@ 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);
+
 #ifdef ASM_SUPPORTED
 # ifdef CONFIG_SMP
 #  if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
diff -urNp --exclude-from=/home/davej/.exclude linux-1050/arch/x86_64/mm/init.c linux-1060/arch/x86_64/mm/init.c
--- linux-1050/arch/x86_64/mm/init.c
+++ linux-1060/arch/x86_64/mm/init.c
@@ -6,5 +6,6 @@
  */
 
+#include <linux/module.h>
 #include <linux/signal.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
@@ -417,6 +418,8 @@ int devmem_is_allowed(unsigned long page
 }
 
 
+EXPORT_SYMBOL_GPL(page_is_ram);
+
 static struct kcore_list kcore_mem, kcore_vmalloc, kcore_kernel, kcore_modules,
 			 kcore_vsyscall;
 
diff -urNp --exclude-from=/home/davej/.exclude linux-1050/drivers/char/crash.c linux-1060/drivers/char/crash.c
--- linux-1050/drivers/char/crash.c
+++ linux-1060/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");
diff -urNp --exclude-from=/home/davej/.exclude linux-1050/drivers/char/Kconfig linux-1060/drivers/char/Kconfig
--- linux-1050/drivers/char/Kconfig
+++ linux-1060/drivers/char/Kconfig
@@ -441,6 +441,8 @@ 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"
--- linux-2.6.16.noarch/drivers/char/Makefile~	2006-03-25 18:50:42.000000000 -0500
+++ linux-2.6.16.noarch/drivers/char/Makefile	2006-03-25 18:50:59.000000000 -0500
@@ -95,6 +95,7 @@ obj-$(CONFIG_IPMI_HANDLER)	+= ipmi/
 
 obj-$(CONFIG_HANGCHECK_TIMER)	+= hangcheck-timer.o
 obj-$(CONFIG_TCG_TPM)		+= tpm/
+obj-$(CONFIG_CRASH)		+= crash.o
 
 # Files generated that shall be removed upon make clean
 clean-files := consolemap_deftbl.c defkeymap.c qtronixmap.c
diff -urNp --exclude-from=/home/davej/.exclude linux-1050/include/asm-i386/crash.h linux-1060/include/asm-i386/crash.h
--- linux-1050/include/asm-i386/crash.h
+++ linux-1060/include/asm-i386/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 -urNp --exclude-from=/home/davej/.exclude linux-1050/include/asm-ia64/crash.h linux-1060/include/asm-ia64/crash.h
--- linux-1050/include/asm-ia64/crash.h
+++ linux-1060/include/asm-ia64/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 -urNp --exclude-from=/home/davej/.exclude linux-1050/include/asm-x86_64/crash.h linux-1060/include/asm-x86_64/crash.h
--- linux-1050/include/asm-x86_64/crash.h
+++ linux-1060/include/asm-x86_64/crash.h
@@ -0,0 +1,75 @@
+#ifndef _ASM_X86_64_CRASH_H
+#define _ASM_X86_64_CRASH_H
+
+/*
+ * linux/include/asm-x86_64/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_X86_64_CRASH_H */

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File linux-2.6-crash-driver.patch of Package kernel

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