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Diffstat (limited to 'include/asm-s390/debug.h')
| -rw-r--r-- | include/asm-s390/debug.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/include/asm-s390/debug.h b/include/asm-s390/debug.h new file mode 100644 index 000000000..fdcc56008 --- /dev/null +++ b/include/asm-s390/debug.h @@ -0,0 +1,210 @@ +/* + * include/asm-s390/debug.h + * S/390 debug facility + * + * Copyright (C) 1999, 2000 IBM Deutschland Entwicklung GmbH, + * IBM Corporation + */ + +#ifndef DEBUG_H +#define DEBUG_H + +/* Note: + * struct __debug_entry must be defined outside of #ifdef __KERNEL__ + * in order to allow a user program to analyze the 'raw'-view. + */ + +struct __debug_entry{ + union { + struct { + unsigned long long clock:52; + unsigned long long exception:1; + unsigned long long used:1; + unsigned long long unused:1; + unsigned long long cpuid:9; + } fields; + + unsigned long long stck; + } id; + void* caller; +} __attribute__((packed)); + +#ifdef __KERNEL__ +#include <linux/version.h> +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)) + #include <asm/spinlock.h> +#else + #include <linux/spinlock.h> +#endif /* LINUX_VERSION_CODE */ +#include <linux/kernel.h> +#include <linux/time.h> +#include <linux/proc_fs.h> + +#define DEBUG_MAX_LEVEL 6 /* debug levels range from 0 to 6 */ +#define DEBUG_OFF_LEVEL -1 /* level where debug is switched off */ +#define DEBUG_MAX_VIEWS 10 /* max number of views in proc fs */ +#define DEBUG_MAX_PROCF_LEN 16 /* max length for a proc file name */ +#define DEBUG_DEFAULT_LEVEL 3 /* initial debug level */ +#define DEBUG_FEATURE_VERSION 1 /* version of debug feature */ + +#define DEBUG_DIR_ROOT "s390dbf" /* name of debug root directory in proc fs */ + +#define DEBUG_DATA(entry) (char*)(entry + 1) /* data is stored behind */ + /* the entry information */ + +#define STCK(x) asm volatile ("STCK %0":"=m" (x)) + +typedef struct __debug_entry debug_entry_t; + +struct debug_view; + +typedef struct debug_info { + struct debug_info* next; + struct debug_info* prev; + atomic_t ref_count; + spinlock_t lock; + int level; + int nr_areas; + int page_order; + int buf_size; + int entry_size; + debug_entry_t** areas; + int active_area; + int *active_entry; + struct proc_dir_entry* proc_root_entry; + struct proc_dir_entry* proc_entries[DEBUG_MAX_VIEWS]; + struct debug_view* views[DEBUG_MAX_VIEWS]; + char name[DEBUG_MAX_PROCF_LEN]; +} debug_info_t; + +typedef int (debug_header_proc_t) (debug_info_t* id, + struct debug_view* view, + int area, + debug_entry_t* entry, + char* out_buf); + +typedef int (debug_format_proc_t) (debug_info_t* id, + struct debug_view* view, char* out_buf, + const char* in_buf); +typedef int (debug_prolog_proc_t) (debug_info_t* id, + struct debug_view* view, + char* out_buf); +typedef int (debug_input_proc_t) (debug_info_t* id, + struct debug_view* view, + struct file* file, const char* user_buf, + size_t in_buf_size, loff_t* offset); + +int debug_dflt_header_fn(debug_info_t* id, struct debug_view* view, + int area, debug_entry_t* entry, char* out_buf); + +struct debug_view { + char name[DEBUG_MAX_PROCF_LEN]; + debug_prolog_proc_t* prolog_proc; + debug_header_proc_t* header_proc; + debug_format_proc_t* format_proc; + debug_input_proc_t* input_proc; +}; + +extern struct debug_view debug_hex_ascii_view; +extern struct debug_view debug_raw_view; + +debug_info_t* debug_register(char* name, int pages_index, int nr_areas, + int buf_size); +void debug_unregister(debug_info_t* id); + +void debug_set_level(debug_info_t* id, int new_level); + +debug_entry_t* debug_event(debug_info_t* id, int level, void* data, + int length); +debug_entry_t* debug_int_event(debug_info_t* id, int level, + unsigned int tag); +debug_entry_t* debug_text_event(debug_info_t* id, int level, + const char* txt); + +debug_entry_t* debug_exception(debug_info_t* id, int level, void* data, + int length); +debug_entry_t* debug_int_exception(debug_info_t* id, int level, + unsigned int tag); +debug_entry_t* debug_text_exception(debug_info_t* id, int level, + const char* txt); + +static inline debug_entry_t * +debug_long_event (debug_info_t* id, int level, unsigned long tag) +{ + unsigned long t=tag; + return debug_event(id,level,&t,sizeof(unsigned long)); +} +static inline debug_entry_t * +debug_long_exception (debug_info_t* id, int level, unsigned long tag) +{ + unsigned long t=tag; + return debug_exception(id,level,&t,sizeof(unsigned long)); +} +int debug_register_view(debug_info_t* id, struct debug_view* view); +int debug_unregister_view(debug_info_t* id, struct debug_view* view); + +/* + define the debug levels: + - 0 No debugging output to console or syslog + - 1 Log internal errors to syslog, ignore check conditions + - 2 Log internal errors and check conditions to syslog + - 3 Log internal errors to console, log check conditions to syslog + - 4 Log internal errors and check conditions to console + - 5 panic on internal errors, log check conditions to console + - 6 panic on both, internal errors and check conditions + */ + +#ifndef DEBUG_LEVEL +#define DEBUG_LEVEL 4 +#endif + +#define INTERNAL_ERRMSG(x,y...) "E" __FILE__ "%d: " x, __LINE__, y +#define INTERNAL_WRNMSG(x,y...) "W" __FILE__ "%d: " x, __LINE__, y +#define INTERNAL_INFMSG(x,y...) "I" __FILE__ "%d: " x, __LINE__, y +#define INTERNAL_DEBMSG(x,y...) "D" __FILE__ "%d: " x, __LINE__, y + +#if DEBUG_LEVEL > 0 +#define PRINT_DEBUG(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_INFO(x...) printk ( KERN_INFO PRINTK_HEADER x ) +#define PRINT_WARN(x...) printk ( KERN_WARNING PRINTK_HEADER x ) +#define PRINT_ERR(x...) printk ( KERN_ERR PRINTK_HEADER x ) +#define PRINT_FATAL(x...) panic ( PRINTK_HEADER x ) +#else +#define PRINT_DEBUG(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_INFO(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_WARN(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_ERR(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_FATAL(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#endif /* DASD_DEBUG */ + +#if DASD_DEBUG > 4 +#define INTERNAL_ERROR(x...) PRINT_FATAL ( INTERNAL_ERRMSG ( x ) ) +#elif DASD_DEBUG > 2 +#define INTERNAL_ERROR(x...) PRINT_ERR ( INTERNAL_ERRMSG ( x ) ) +#elif DASD_DEBUG > 0 +#define INTERNAL_ERROR(x...) PRINT_WARN ( INTERNAL_ERRMSG ( x ) ) +#else +#define INTERNAL_ERROR(x...) +#endif /* DASD_DEBUG */ + +#if DASD_DEBUG > 5 +#define INTERNAL_CHECK(x...) PRINT_FATAL ( INTERNAL_CHKMSG ( x ) ) +#elif DASD_DEBUG > 3 +#define INTERNAL_CHECK(x...) PRINT_ERR ( INTERNAL_CHKMSG ( x ) ) +#elif DASD_DEBUG > 1 +#define INTERNAL_CHECK(x...) PRINT_WARN ( INTERNAL_CHKMSG ( x ) ) +#else +#define INTERNAL_CHECK(x...) +#endif /* DASD_DEBUG */ + +#undef DEBUG_MALLOC +#ifdef DEBUG_MALLOC +void *b; +#define kmalloc(x...) (PRINT_INFO(" kmalloc %p\n",b=kmalloc(x)),b) +#define kfree(x) PRINT_INFO(" kfree %p\n",x);kfree(x) +#define get_free_page(x...) (PRINT_INFO(" gfp %p\n",b=get_free_page(x)),b) +#define __get_free_pages(x...) (PRINT_INFO(" gfps %p\n",b=__get_free_pages(x)),b) +#endif /* DEBUG_MALLOC */ + +#endif /* __KERNEL__ */ +#endif /* DEBUG_H */ |