enable crash on other architectures

1 files changed, 196 insertions, 74 deletions

diff --git a/crash-driver.patch b/crash-driver.patch
index a7b7b72f9..61c5dfd61 100644
--- a/crash-driver.patch
+++ b/crash-driver.patch
@@ -1,24 +1,57 @@
-From f72d640713d01b3b704c6e84ab49b62f19fc9c22 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: [PATCH] dev-crash-driver.patch
+From 9fcd8dd1ccc20ea8d466d48e887e92b832e22d56 Mon Sep 17 00:00:00 2001
+From: Kyle McMartin <kyle@dreadnought.bos.jkkm.org>
+Date: Tue, 5 Nov 2013 13:16:00 -0500
+Subject: [PATCH] crash-driver
 
 ---
- 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          |    3 +
- drivers/char/Makefile         |    2 +
- drivers/char/crash.c          |  128 +++++++++++++++++++++++++++++++++++++++++
- 7 files changed, 303 insertions(+), 0 deletions(-)
+ arch/arm/include/asm/crash.h     |   6 ++
+ arch/arm64/include/asm/crash.h   |   6 ++
+ arch/ia64/include/asm/crash.h    |  90 +++++++++++++++++++++++++++
+ arch/ia64/kernel/ia64_ksyms.c    |   3 +
+ arch/powerpc/include/asm/crash.h |   6 ++
+ arch/s390/include/asm/crash.h    |  60 ++++++++++++++++++
+ arch/x86/include/asm/crash.h     |   6 ++
+ drivers/char/Kconfig             |   3 +
+ drivers/char/Makefile            |   2 +
+ drivers/char/crash.c             | 128 +++++++++++++++++++++++++++++++++++++++
+ include/asm-generic/crash.h      |  72 ++++++++++++++++++++++
+ 11 files changed, 382 insertions(+)
+ create mode 100644 arch/arm/include/asm/crash.h
+ create mode 100644 arch/arm64/include/asm/crash.h
  create mode 100644 arch/ia64/include/asm/crash.h
+ create mode 100644 arch/powerpc/include/asm/crash.h
+ create mode 100644 arch/s390/include/asm/crash.h
  create mode 100644 arch/x86/include/asm/crash.h
  create mode 100644 drivers/char/crash.c
+ create mode 100644 include/asm-generic/crash.h
 
+diff --git a/arch/arm/include/asm/crash.h b/arch/arm/include/asm/crash.h
+new file mode 100644
+index 0000000..1d2e537
+--- /dev/null
++++ b/arch/arm/include/asm/crash.h
+@@ -0,0 +1,6 @@
++#ifndef _ARM_CRASH_H
++#define _ARM_CRASH_H
++
++#include <asm-generic/crash.h>
++
++#endif /* _ARM_CRASH_H */
+diff --git a/arch/arm64/include/asm/crash.h b/arch/arm64/include/asm/crash.h
+new file mode 100644
+index 0000000..a7fcc28
+--- /dev/null
++++ b/arch/arm64/include/asm/crash.h
+@@ -0,0 +1,6 @@
++#ifndef _ARM64_CRASH_H
++#define _ARM64_CRASH_H
++
++#include <asm-generic/crash.h>
++
++#endif /* _ARM64_CRASH_H */
 diff --git a/arch/ia64/include/asm/crash.h b/arch/ia64/include/asm/crash.h
 new file mode 100644
-index 0000000..541af84
+index 0000000..28bd955
 --- /dev/null
 +++ b/arch/ia64/include/asm/crash.h
 @@ -0,0 +1,90 @@
@@ -68,7 +101,7 @@ index 0000000..541af84
 +			return NULL;
 +	}
 +
-+	switch (type = efi_mem_type(offset)) 
++	switch (type = efi_mem_type(offset))
 +	{
 +	case EFI_LOADER_CODE:
 +	case EFI_LOADER_DATA:
@@ -79,7 +112,7 @@ index 0000000..541af84
 +
 +	default:
 +		printk(KERN_INFO
-+		    "crash memory driver: invalid memory type for %lx: %d\n", 
++		    "crash memory driver: invalid memory type for %lx: %d\n",
 +			offset, type);
 +		return NULL;
 +	}
@@ -96,7 +129,7 @@ index 0000000..541af84
 +
 +	if (!page->virtual) {
 +		printk(KERN_INFO
-+		    "crash memory driver: offset: %lx page: %lx page->virtual: NULL\n", 
++		    "crash memory driver: offset: %lx page: %lx page->virtual: NULL\n",
 +			offset, (unsigned long)page);
 +		return NULL;
 +	}
@@ -104,8 +137,8 @@ index 0000000..541af84
 +	return (page->virtual + (offset & (PAGE_SIZE-1)));
 +}
 +
-+static inline void unmap_virtual(struct page *page) 
-+{ 
++static inline void unmap_virtual(struct page *page)
++{
 +	return;
 +}
 +
@@ -113,7 +146,7 @@ index 0000000..541af84
 +
 +#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
+index 5b7791d..aee4b87 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);
@@ -126,50 +159,47 @@ index 7f4a0ed..552fe24 100644
  #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
+diff --git a/arch/powerpc/include/asm/crash.h b/arch/powerpc/include/asm/crash.h
 new file mode 100644
-index 0000000..dfcc006
+index 0000000..daa8c4d
 --- /dev/null
-+++ b/arch/x86/include/asm/crash.h
-@@ -0,0 +1,73 @@
-+#ifndef _ASM_I386_CRASH_H
-+#define _ASM_I386_CRASH_H
++++ b/arch/powerpc/include/asm/crash.h
+@@ -0,0 +1,6 @@
++#ifndef _PPC64_CRASH_H
++#define _PPC64_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.
-+ *
-+ */
++#include <asm-generic/crash.h>
++
++#endif /* _PPC64_CRASH_H */
+diff --git a/arch/s390/include/asm/crash.h b/arch/s390/include/asm/crash.h
+new file mode 100644
+index 0000000..552be5e
+--- /dev/null
++++ b/arch/s390/include/asm/crash.h
+@@ -0,0 +1,60 @@
++#ifndef _S390_CRASH_H
++#define _S390_CRASH_H
 +
 +#ifdef __KERNEL__
 +
 +#include <linux/mm.h>
 +#include <linux/highmem.h>
-+#include <asm/mmzone.h>
 +
-+static inline void *
-+map_virtual(u64 offset, struct page **pp)
++/*
++ * For swapped prefix pages get bounce buffer using xlate_dev_mem_ptr()
++ */
++static inline void *map_virtual(u64 offset, struct page **pp)
 +{
 +	struct page *page;
 +	unsigned long pfn;
 +	void *vaddr;
 +
-+	pfn = (unsigned long)(offset >> PAGE_SHIFT);
++	vaddr = xlate_dev_mem_ptr(offset);
++	pfn = ((unsigned long) vaddr) >> PAGE_SHIFT;
++	if ((unsigned long) vaddr != offset)
++		page = pfn_to_page(pfn);
++	else
++		page = NULL;
 +
 +	if (!page_is_ram(pfn)) {
 +		printk(KERN_INFO
@@ -183,30 +213,44 @@ index 0000000..dfcc006
 +		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)));
++	return vaddr;
 +}
 +
-+static inline void unmap_virtual(struct page *page) 
-+{ 
-+	kunmap(page);
++/*
++ * Free bounce buffer if necessary
++ */
++static inline void unmap_virtual(struct page *page)
++{
++	void *vaddr;
++
++	if (page) {
++		/*
++		 * Because for bounce buffers vaddr will never be 0
++		 * unxlate_dev_mem_ptr() will always free the bounce buffer.
++		 */
++		vaddr = (void *)(page_to_pfn(page) << PAGE_SHIFT);
++		unxlate_dev_mem_ptr(0, vaddr);
++	}
 +}
 +
 +#endif /* __KERNEL__ */
 +
-+#endif /* _ASM_I386_CRASH_H */
++#endif /* _S390_CRASH_H */
+diff --git a/arch/x86/include/asm/crash.h b/arch/x86/include/asm/crash.h
+new file mode 100644
+index 0000000..27a4156
+--- /dev/null
++++ b/arch/x86/include/asm/crash.h
+@@ -0,0 +1,6 @@
++#ifndef _X86_CRASH_H
++#define _X86_CRASH_H
++
++#include <asm-generic/crash.h>
++
++#endif /* _X86_CRASH_H */
 diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
-index 423fd56..e04a561 100644
+index 1421997..72a8b74 100644
 --- a/drivers/char/Kconfig
 +++ b/drivers/char/Kconfig
 @@ -4,6 +4,9 @@
@@ -220,10 +264,10 @@ index 423fd56..e04a561 100644
  
  config DEVKMEM
 diff --git a/drivers/char/Makefile b/drivers/char/Makefile
-index 32762ba..3d5d525 100644
+index 7ff1d0d..3ed67af 100644
 --- a/drivers/char/Makefile
 +++ b/drivers/char/Makefile
-@@ -65,3 +65,5 @@ obj-$(CONFIG_JS_RTC)		+= js-rtc.o
+@@ -62,3 +62,5 @@ obj-$(CONFIG_JS_RTC)		+= js-rtc.o
  js-rtc-y = rtc.o
  
  obj-$(CONFIG_TILE_SROM)		+= tile-srom.o
@@ -231,7 +275,7 @@ index 32762ba..3d5d525 100644
 +obj-$(CONFIG_CRASH)            += crash.o
 diff --git a/drivers/char/crash.c b/drivers/char/crash.c
 new file mode 100644
-index 0000000..e5437de
+index 0000000..a142bb3
 --- /dev/null
 +++ b/drivers/char/crash.c
 @@ -0,0 +1,128 @@
@@ -276,7 +320,7 @@ index 0000000..e5437de
 + *  access to physical memory.
 + */
 +
-+static loff_t 
++static loff_t
 +crash_llseek(struct file * file, loff_t offset, int orig)
 +{
 +	switch (orig) {
@@ -292,7 +336,7 @@ index 0000000..e5437de
 +}
 +
 +/*
-+ *  Determine the page address for an address offset value, 
++ *  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.
 + */
@@ -305,7 +349,7 @@ index 0000000..e5437de
 +	ssize_t read;
 +
 +	offset = *poff;
-+	if (offset >> PAGE_SHIFT != (offset+count-1) >> PAGE_SHIFT) 
++	if (offset >> PAGE_SHIFT != (offset+count-1) >> PAGE_SHIFT)
 +		return -EINVAL;
 +
 +	vaddr = map_virtual(offset, &page);
@@ -342,11 +386,11 @@ index 0000000..e5437de
 +
 +	ret = misc_register(&crash_dev);
 +	if (ret) {
-+		printk(KERN_ERR 
++		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:
@@ -363,6 +407,84 @@ index 0000000..e5437de
 +module_exit(crash_cleanup_module);
 +
 +MODULE_LICENSE("GPL");
+diff --git a/include/asm-generic/crash.h b/include/asm-generic/crash.h
+new file mode 100644
+index 0000000..8a0a69a
+--- /dev/null
++++ b/include/asm-generic/crash.h
+@@ -0,0 +1,72 @@
++#ifndef __CRASH_H__
++#define __CRASH_H__
++
++/*
++ * include/linux/crash.h
++ *
++ * Copyright (c) 2013 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>
++
++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 /* __CRASH_H__ */
 -- 
-1.7.6
+1.8.3.1