+++ /dev/null
-/*
- * Kernel header file for Linux crash dumps.
- *
- * Created by: Matt Robinson (yakker@sgi.com)
- *
- * Copyright 1999 Silicon Graphics, Inc. All rights reserved.
- *
- * This code is released under version 2 of the GNU GPL.
- */
-
-/* This header file holds the architecture specific crash dump header */
-#ifndef _ASM_DUMP_H
-#define _ASM_DUMP_H
-
-/* necessary header files */
-#include <asm/ptrace.h>
-#include <asm/page.h>
-#include <linux/threads.h>
-#include <linux/mm.h>
-
-/* definitions */
-#define DUMP_ASM_MAGIC_NUMBER 0xdeaddeadULL /* magic number */
-#define DUMP_ASM_VERSION_NUMBER 0x3 /* version number */
-
-/* max number of cpus */
-#define DUMP_MAX_NUM_CPUS 32
-
-/*
- * Structure: __dump_header_asm
- * Function: This is the header for architecture-specific stuff. It
- * follows right after the dump header.
- */
-struct __dump_header_asm {
- /* the dump magic number -- unique to verify dump is valid */
- u64 dha_magic_number;
-
- /* the version number of this dump */
- u32 dha_version;
-
- /* the size of this header (in case we can't read it) */
- u32 dha_header_size;
-
- /* the esp for i386 systems */
- u32 dha_esp;
-
- /* the eip for i386 systems */
- u32 dha_eip;
-
- /* the dump registers */
- struct pt_regs dha_regs;
-
- /* smp specific */
- u32 dha_smp_num_cpus;
- u32 dha_dumping_cpu;
- struct pt_regs dha_smp_regs[DUMP_MAX_NUM_CPUS];
- u32 dha_smp_current_task[DUMP_MAX_NUM_CPUS];
- u32 dha_stack[DUMP_MAX_NUM_CPUS];
- u32 dha_stack_ptr[DUMP_MAX_NUM_CPUS];
-} __attribute__((packed));
-
-#ifdef __KERNEL__
-
-extern struct __dump_header_asm dump_header_asm;
-
-#ifdef CONFIG_SMP
-extern cpumask_t irq_affinity[];
-extern int (*dump_ipi_function_ptr)(struct pt_regs *);
-extern void dump_send_ipi(void);
-#else
-#define dump_send_ipi() do { } while(0)
-#endif
-
-static inline void get_current_regs(struct pt_regs *regs)
-{
- __asm__ __volatile__("movl %%ebx,%0" : "=m"(regs->ebx));
- __asm__ __volatile__("movl %%ecx,%0" : "=m"(regs->ecx));
- __asm__ __volatile__("movl %%edx,%0" : "=m"(regs->edx));
- __asm__ __volatile__("movl %%esi,%0" : "=m"(regs->esi));
- __asm__ __volatile__("movl %%edi,%0" : "=m"(regs->edi));
- __asm__ __volatile__("movl %%ebp,%0" : "=m"(regs->ebp));
- __asm__ __volatile__("movl %%eax,%0" : "=m"(regs->eax));
- __asm__ __volatile__("movl %%esp,%0" : "=m"(regs->esp));
- __asm__ __volatile__("movw %%ss, %%ax;" :"=a"(regs->xss));
- __asm__ __volatile__("movw %%cs, %%ax;" :"=a"(regs->xcs));
- __asm__ __volatile__("movw %%ds, %%ax;" :"=a"(regs->xds));
- __asm__ __volatile__("movw %%es, %%ax;" :"=a"(regs->xes));
- __asm__ __volatile__("pushfl; popl %0" :"=m"(regs->eflags));
- regs->eip = (unsigned long)current_text_addr();
-}
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_DUMP_H */
+++ /dev/null
-/*
- * Kernel header file for Linux crash dumps.
- *
- * Created by: Matt Robinson (yakker@sgi.com)
- * Copyright 1999 - 2002 Silicon Graphics, Inc. All rights reserved.
- *
- * vmdump.h to dump.h by: Matt D. Robinson (yakker@sourceforge.net)
- * Copyright 2001 - 2002 Matt D. Robinson. All rights reserved.
- * Copyright (C) 2002 Free Software Foundation, Inc. All rights reserved.
- *
- * Most of this is the same old stuff from vmdump.h, except now we're
- * actually a stand-alone driver plugged into the block layer interface,
- * with the exception that we now allow for compression modes externally
- * loaded (e.g., someone can come up with their own).
- *
- * This code is released under version 2 of the GNU GPL.
- */
-
-/* This header file includes all structure definitions for crash dumps. */
-#ifndef _DUMP_H
-#define _DUMP_H
-
-#if defined(CONFIG_CRASH_DUMP)
-
-#include <linux/list.h>
-#include <linux/notifier.h>
-#include <linux/dumpdev.h>
-#include <asm/ioctl.h>
-
-/*
- * Predefine default DUMP_PAGE constants, asm header may override.
- *
- * On ia64 discontinuous memory systems it's possible for the memory
- * banks to stop at 2**12 page alignments, the smallest possible page
- * size. But the system page size, PAGE_SIZE, is in fact larger.
- */
-#define DUMP_PAGE_SHIFT PAGE_SHIFT
-#define DUMP_PAGE_MASK PAGE_MASK
-#define DUMP_PAGE_ALIGN(addr) PAGE_ALIGN(addr)
-#define DUMP_HEADER_OFFSET PAGE_SIZE
-
-#define OLDMINORBITS 8
-#define OLDMINORMASK ((1U << OLDMINORBITS) -1)
-
-/* keep DUMP_PAGE_SIZE constant to 4K = 1<<12
- * it may be different from PAGE_SIZE then.
- */
-#define DUMP_PAGE_SIZE 4096
-
-/*
- * Predefined default memcpy() to use when copying memory to the dump buffer.
- *
- * On ia64 there is a heads up function that can be called to let the prom
- * machine check monitor know that the current activity is risky and it should
- * ignore the fault (nofault). In this case the ia64 header will redefine this
- * macro to __dump_memcpy() and use it's arch specific version.
- */
-#define DUMP_memcpy memcpy
-
-/* necessary header files */
-#include <asm/dump.h> /* for architecture-specific header */
-
-/*
- * Size of the buffer that's used to hold:
- *
- * 1. the dump header (padded to fill the complete buffer)
- * 2. the possibly compressed page headers and data
- */
-#define DUMP_BUFFER_SIZE (64 * 1024) /* size of dump buffer */
-#define DUMP_HEADER_SIZE DUMP_BUFFER_SIZE
-
-/* standard header definitions */
-#define DUMP_MAGIC_NUMBER 0xa8190173618f23edULL /* dump magic number */
-#define DUMP_MAGIC_LIVE 0xa8190173618f23cdULL /* live magic number */
-#define DUMP_VERSION_NUMBER 0x8 /* dump version number */
-#define DUMP_PANIC_LEN 0x100 /* dump panic string length */
-
-/* dump levels - type specific stuff added later -- add as necessary */
-#define DUMP_LEVEL_NONE 0x0 /* no dumping at all -- just bail */
-#define DUMP_LEVEL_HEADER 0x1 /* kernel dump header only */
-#define DUMP_LEVEL_KERN 0x2 /* dump header and kernel pages */
-#define DUMP_LEVEL_USED 0x4 /* dump header, kernel/user pages */
-#define DUMP_LEVEL_ALL_RAM 0x8 /* dump header, all RAM pages */
-#define DUMP_LEVEL_ALL 0x10 /* dump all memory RAM and firmware */
-
-
-/* dump compression options -- add as necessary */
-#define DUMP_COMPRESS_NONE 0x0 /* don't compress this dump */
-#define DUMP_COMPRESS_RLE 0x1 /* use RLE compression */
-#define DUMP_COMPRESS_GZIP 0x2 /* use GZIP compression */
-
-/* dump flags - any dump-type specific flags -- add as necessary */
-#define DUMP_FLAGS_NONE 0x0 /* no flags are set for this dump */
-#define DUMP_FLAGS_SOFTBOOT 0x2 /* 2 stage soft-boot based dump */
-#define DUMP_FLAGS_NONDISRUPT 0X1 /* non-disruptive dumping */
-
-#define DUMP_FLAGS_TARGETMASK 0xf0000000 /* handle special case targets */
-#define DUMP_FLAGS_DISKDUMP 0x80000000 /* dump to local disk */
-#define DUMP_FLAGS_NETDUMP 0x40000000 /* dump over the network */
-
-/* dump header flags -- add as necessary */
-#define DUMP_DH_FLAGS_NONE 0x0 /* no flags set (error condition!) */
-#define DUMP_DH_RAW 0x1 /* raw page (no compression) */
-#define DUMP_DH_COMPRESSED 0x2 /* page is compressed */
-#define DUMP_DH_END 0x4 /* end marker on a full dump */
-#define DUMP_DH_TRUNCATED 0x8 /* dump is incomplete */
-#define DUMP_DH_TEST_PATTERN 0x10 /* dump page is a test pattern */
-#define DUMP_DH_NOT_USED 0x20 /* 1st bit not used in flags */
-
-/* names for various dump parameters in /proc/kernel */
-#define DUMP_ROOT_NAME "sys/dump"
-#define DUMP_DEVICE_NAME "device"
-#define DUMP_COMPRESS_NAME "compress"
-#define DUMP_LEVEL_NAME "level"
-#define DUMP_FLAGS_NAME "flags"
-#define DUMP_ADDR_NAME "addr"
-
-#define DUMP_SYSRQ_KEY 'd' /* key to use for MAGIC_SYSRQ key */
-
-/* CTL_DUMP names: */
-enum
-{
- CTL_DUMP_DEVICE=1,
- CTL_DUMP_COMPRESS=3,
- CTL_DUMP_LEVEL=3,
- CTL_DUMP_FLAGS=4,
- CTL_DUMP_ADDR=5,
- CTL_DUMP_TEST=6,
-};
-
-
-/* page size for gzip compression -- buffered slightly beyond hardware PAGE_SIZE used by DUMP */
-#define DUMP_DPC_PAGE_SIZE (DUMP_PAGE_SIZE + 512)
-
-/* dump ioctl() control options */
-#define DIOSDUMPDEV _IOW('p', 0xA0, unsigned int) /* set the dump device */
-#define DIOGDUMPDEV _IOR('p', 0xA1, unsigned int) /* get the dump device */
-#define DIOSDUMPLEVEL _IOW('p', 0xA2, unsigned int) /* set the dump level */
-#define DIOGDUMPLEVEL _IOR('p', 0xA3, unsigned int) /* get the dump level */
-#define DIOSDUMPFLAGS _IOW('p', 0xA4, unsigned int) /* set the dump flag parameters */
-#define DIOGDUMPFLAGS _IOR('p', 0xA5, unsigned int) /* get the dump flag parameters */
-#define DIOSDUMPCOMPRESS _IOW('p', 0xA6, unsigned int) /* set the dump compress level */
-#define DIOGDUMPCOMPRESS _IOR('p', 0xA7, unsigned int) /* get the dump compress level */
-
-/* these ioctls are used only by netdump module */
-#define DIOSTARGETIP _IOW('p', 0xA8, unsigned int) /* set the target m/c's ip */
-#define DIOGTARGETIP _IOR('p', 0xA9, unsigned int) /* get the target m/c's ip */
-#define DIOSTARGETPORT _IOW('p', 0xAA, unsigned int) /* set the target m/c's port */
-#define DIOGTARGETPORT _IOR('p', 0xAB, unsigned int) /* get the target m/c's port */
-#define DIOSSOURCEPORT _IOW('p', 0xAC, unsigned int) /* set the source m/c's port */
-#define DIOGSOURCEPORT _IOR('p', 0xAD, unsigned int) /* get the source m/c's port */
-#define DIOSETHADDR _IOW('p', 0xAE, unsigned int) /* set ethernet address */
-#define DIOGETHADDR _IOR('p', 0xAF, unsigned int) /* get ethernet address */
-#define DIOGDUMPOKAY _IOR('p', 0xB0, unsigned int) /* check if dump is configured */
-#define DIOSDUMPTAKE _IOW('p', 0xB1, unsigned int) /* Take a manual dump */
-
-/*
- * Structure: __dump_header
- * Function: This is the header dumped at the top of every valid crash
- * dump.
- */
-struct __dump_header {
- /* the dump magic number -- unique to verify dump is valid */
- u64 dh_magic_number;
-
- /* the version number of this dump */
- u32 dh_version;
-
- /* the size of this header (in case we can't read it) */
- u32 dh_header_size;
-
- /* the level of this dump (just a header?) */
- u32 dh_dump_level;
-
- /*
- * We assume dump_page_size to be 4K in every case.
- * Store here the configurable system page size (4K, 8K, 16K, etc.)
- */
- u32 dh_page_size;
-
- /* the size of all physical memory */
- u64 dh_memory_size;
-
- /* the start of physical memory */
- u64 dh_memory_start;
-
- /* the end of physical memory */
- u64 dh_memory_end;
-
- /* the number of hardware/physical pages in this dump specifically */
- u32 dh_num_dump_pages;
-
- /* the panic string, if available */
- char dh_panic_string[DUMP_PANIC_LEN];
-
- /* timeval depends on architecture, two long values */
- struct {
- u64 tv_sec;
- u64 tv_usec;
- } dh_time; /* the time of the system crash */
-
- /* the NEW utsname (uname) information -- in character form */
- /* we do this so we don't have to include utsname.h */
- /* plus it helps us be more architecture independent */
- /* now maybe one day soon they'll make the [65] a #define! */
- char dh_utsname_sysname[65];
- char dh_utsname_nodename[65];
- char dh_utsname_release[65];
- char dh_utsname_version[65];
- char dh_utsname_machine[65];
- char dh_utsname_domainname[65];
-
- /* the address of current task (OLD = void *, NEW = u64) */
- u64 dh_current_task;
-
- /* what type of compression we're using in this dump (if any) */
- u32 dh_dump_compress;
-
- /* any additional flags */
- u32 dh_dump_flags;
-
- /* any additional flags */
- u32 dh_dump_device;
-} __attribute__((packed));
-
-/*
- * Structure: __dump_page
- * Function: To act as the header associated to each physical page of
- * memory saved in the system crash dump. This allows for
- * easy reassembly of each crash dump page. The address bits
- * are split to make things easier for 64-bit/32-bit system
- * conversions.
- *
- * dp_byte_offset and dp_page_index are landmarks that are helpful when
- * looking at a hex dump of /dev/vmdump,
- */
-struct __dump_page {
- /* the address of this dump page */
- u64 dp_address;
-
- /* the size of this dump page */
- u32 dp_size;
-
- /* flags (currently DUMP_COMPRESSED, DUMP_RAW or DUMP_END) */
- u32 dp_flags;
-} __attribute__((packed));
-
-/*
- * Structure: __lkcdinfo
- * Function: This structure contains information needed for the lkcdutils
- * package (particularly lcrash) to determine what information is
- * associated to this kernel, specifically.
- */
-struct __lkcdinfo {
- int arch;
- int ptrsz;
- int byte_order;
- int linux_release;
- int page_shift;
- int page_size;
- u64 page_mask;
- u64 page_offset;
- int stack_offset;
-};
-
-#ifdef __KERNEL__
-
-/*
- * Structure: __dump_compress
- * Function: This is what an individual compression mechanism can use
- * to plug in their own compression techniques. It's always
- * best to build these as individual modules so that people
- * can put in whatever they want.
- */
-struct __dump_compress {
- /* the list_head structure for list storage */
- struct list_head list;
-
- /* the type of compression to use (DUMP_COMPRESS_XXX) */
- int compress_type;
- const char *compress_name;
-
- /* the compression function to call */
- u16 (*compress_func)(const u8 *, u16, u8 *, u16);
-};
-
-/* functions for dump compression registration */
-extern void dump_register_compression(struct __dump_compress *);
-extern void dump_unregister_compression(int);
-
-/*
- * Structure dump_mbank[]:
- *
- * For CONFIG_DISCONTIGMEM systems this array specifies the
- * memory banks/chunks that need to be dumped after a panic.
- *
- * For classic systems it specifies a single set of pages from
- * 0 to max_mapnr.
- */
-struct __dump_mbank {
- u64 start;
- u64 end;
- int type;
- int pad1;
- long pad2;
-};
-
-#define DUMP_MBANK_TYPE_CONVENTIONAL_MEMORY 1
-#define DUMP_MBANK_TYPE_OTHER 2
-
-#define MAXCHUNKS 256
-extern int dump_mbanks;
-extern struct __dump_mbank dump_mbank[MAXCHUNKS];
-
-/* notification event codes */
-#define DUMP_BEGIN 0x0001 /* dump beginning */
-#define DUMP_END 0x0002 /* dump ending */
-
-/* Scheduler soft spin control.
- *
- * 0 - no dump in progress
- * 1 - cpu0 is dumping, ...
- */
-extern unsigned long dump_oncpu;
-extern void dump_execute(const char *, const struct pt_regs *);
-
-/*
- * Notifier list for kernel code which wants to be called
- * at kernel dump.
- */
-extern struct notifier_block *dump_notifier_list;
-static inline int register_dump_notifier(struct notifier_block *nb)
-{
- return notifier_chain_register(&dump_notifier_list, nb);
-}
-static inline int unregister_dump_notifier(struct notifier_block * nb)
-{
- return notifier_chain_unregister(&dump_notifier_list, nb);
-}
-
-extern void (*dump_function_ptr)(const char *, const struct pt_regs *);
-static inline void dump(char * str, struct pt_regs * regs)
-{
- if (dump_function_ptr)
- dump_function_ptr(str, regs);
-}
-
-/*
- * Common Arch Specific Functions should be declared here.
- * This allows the C compiler to detect discrepancies.
- */
-extern void __dump_open(void);
-extern void __dump_cleanup(void);
-extern void __dump_init(u64);
-extern void __dump_save_regs(struct pt_regs *, const struct pt_regs *);
-extern int __dump_configure_header(const struct pt_regs *);
-extern int __dump_irq_enable(void);
-extern void __dump_irq_restore(void);
-extern int __dump_page_valid(unsigned long index);
-#ifdef CONFIG_SMP
-extern void __dump_save_other_cpus(void);
-#else
-#define __dump_save_other_cpus()
-#endif
-
-extern int manual_handle_crashdump(void);
-
-/* to track all used (compound + zero order) pages */
-#define PageInuse(p) (PageCompound(p) || page_count(p))
-
-#endif /* __KERNEL__ */
-
-#else /* !CONFIG_CRASH_DUMP */
-
-/* If not configured then make code disappear! */
-#define register_dump_watchdog(x) do { } while(0)
-#define unregister_dump_watchdog(x) do { } while(0)
-#define register_dump_notifier(x) do { } while(0)
-#define unregister_dump_notifier(x) do { } while(0)
-#define dump_in_progress() 0
-#define dump(x, y) do { } while(0)
-
-#endif /* !CONFIG_CRASH_DUMP */
-
-#endif /* _DUMP_H */
+++ /dev/null
-/*
- * Generic dump device interfaces for flexible system dump
- * (Enables variation of dump target types e.g disk, network, memory)
- *
- * These interfaces have evolved based on discussions on lkcd-devel.
- * Eventually the intent is to support primary and secondary or
- * alternate targets registered at the same time, with scope for
- * situation based failover or multiple dump devices used for parallel
- * dump i/o.
- *
- * Started: Oct 2002 - Suparna Bhattacharya (suparna@in.ibm.com)
- *
- * Copyright (C) 2001 - 2002 Matt D. Robinson. All rights reserved.
- * Copyright (C) 2002 International Business Machines Corp.
- *
- * This code is released under version 2 of the GNU GPL.
- */
-
-#ifndef _LINUX_DUMPDEV_H
-#define _LINUX_DUMPDEV_H
-
-#include <linux/kernel.h>
-#include <linux/wait.h>
-#include <linux/bio.h>
-
-/* Determined by the dump target (device) type */
-
-struct dump_dev;
-
-struct dump_dev_ops {
- int (*open)(struct dump_dev *, unsigned long); /* configure */
- int (*release)(struct dump_dev *); /* unconfigure */
- int (*silence)(struct dump_dev *); /* when dump starts */
- int (*resume)(struct dump_dev *); /* when dump is over */
- int (*seek)(struct dump_dev *, loff_t);
- /* trigger a write (async in nature typically) */
- int (*write)(struct dump_dev *, void *, unsigned long);
- /* not usually used during dump, but option available */
- int (*read)(struct dump_dev *, void *, unsigned long);
- /* use to poll for completion */
- int (*ready)(struct dump_dev *, void *);
- int (*ioctl)(struct dump_dev *, unsigned int, unsigned long);
-};
-
-struct dump_dev {
- char type_name[32]; /* block, net-poll etc */
- unsigned long device_id; /* interpreted differently for various types */
- struct dump_dev_ops *ops;
- struct list_head list;
- loff_t curr_offset;
-};
-
-/*
- * dump_dev type variations:
- */
-
-/* block */
-struct dump_blockdev {
- struct dump_dev ddev;
- dev_t dev_id;
- struct block_device *bdev;
- struct bio *bio;
- loff_t start_offset;
- loff_t limit;
- int err;
-};
-
-static inline struct dump_blockdev *DUMP_BDEV(struct dump_dev *dev)
-{
- return container_of(dev, struct dump_blockdev, ddev);
-}
-
-
-/* mem - for internal use by soft-boot based dumper */
-struct dump_memdev {
- struct dump_dev ddev;
- unsigned long indirect_map_root;
- unsigned long nr_free;
- struct page *curr_page;
- unsigned long *curr_map;
- unsigned long curr_map_offset;
- unsigned long last_offset;
- unsigned long last_used_offset;
- unsigned long last_bs_offset;
-};
-
-static inline struct dump_memdev *DUMP_MDEV(struct dump_dev *dev)
-{
- return container_of(dev, struct dump_memdev, ddev);
-}
-
-/* Todo/future - meant for raw dedicated interfaces e.g. mini-ide driver */
-struct dump_rdev {
- struct dump_dev ddev;
- char name[32];
- int (*reset)(struct dump_rdev *, unsigned int,
- unsigned long);
- /* ... to do ... */
-};
-
-/* just to get the size right when saving config across a soft-reboot */
-struct dump_anydev {
- union {
- struct dump_blockdev bddev;
- /* .. add other types here .. */
- };
-};
-
-
-
-/* Dump device / target operation wrappers */
-/* These assume that dump_dev is initiatized to dump_config.dumper->dev */
-
-extern struct dump_dev *dump_dev;
-
-static inline int dump_dev_open(unsigned long arg)
-{
- return dump_dev->ops->open(dump_dev, arg);
-}
-
-static inline int dump_dev_release(void)
-{
- return dump_dev->ops->release(dump_dev);
-}
-
-static inline int dump_dev_silence(void)
-{
- return dump_dev->ops->silence(dump_dev);
-}
-
-static inline int dump_dev_resume(void)
-{
- return dump_dev->ops->resume(dump_dev);
-}
-
-static inline int dump_dev_seek(loff_t offset)
-{
- return dump_dev->ops->seek(dump_dev, offset);
-}
-
-static inline int dump_dev_write(void *buf, unsigned long len)
-{
- return dump_dev->ops->write(dump_dev, buf, len);
-}
-
-static inline int dump_dev_ready(void *buf)
-{
- return dump_dev->ops->ready(dump_dev, buf);
-}
-
-static inline int dump_dev_ioctl(unsigned int cmd, unsigned long arg)
-{
- if (!dump_dev || !dump_dev->ops->ioctl)
- return -EINVAL;
- return dump_dev->ops->ioctl(dump_dev, cmd, arg);
-}
-
-extern int dump_register_device(struct dump_dev *);
-extern void dump_unregister_device(struct dump_dev *);
-
-#endif /* _LINUX_DUMPDEV_H */
git://git.onelab.eu / linux-2.6.git / commitdiff