diff options
Diffstat (limited to 'include/linux/dasd.h')
| -rw-r--r-- | include/linux/dasd.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/include/linux/dasd.h b/include/linux/dasd.h new file mode 100644 index 000000000..98c3c0424 --- /dev/null +++ b/include/linux/dasd.h @@ -0,0 +1,225 @@ + +#ifndef DASD_H +#define DASD_H + +/* First of all the external stuff */ +#include <linux/ioctl.h> +#include <linux/major.h> +#include <linux/wait.h> + +#define IOCTL_LETTER 'D' +#define BIODASDFORMAT _IO(IOCTL_LETTER,0) /* Format the volume or an extent */ +#define BIODASDDISABLE _IO(IOCTL_LETTER,1) /* Disable the volume (for Linux) */ +#define BIODASDENABLE _IO(IOCTL_LETTER,2) /* Enable the volume (for Linux) */ +/* Stuff for reading and writing the Label-Area to/from user space */ +#define BIODASDGTVLBL _IOR(IOCTL_LETTER,3,dasd_volume_label_t) +#define BIODASDSTVLBL _IOW(IOCTL_LETTER,4,dasd_volume_label_t) +#define BIODASDRWTB _IOWR(IOCTL_LETTER,5,int) +#define BIODASDRSID _IOR(IOCTL_LETTER,6,senseid_t) + +typedef +union { + char bytes[512]; + struct { + /* 80 Bytes of Label data */ + char identifier[4]; /* e.g. "LNX1", "VOL1" or "CMS1" */ + char label[6]; /* Given by user */ + char security; + char vtoc[5]; /* Null in "LNX1"-labelled partitions */ + char reserved0[5]; + long ci_size; + long blk_per_ci; + long lab_per_ci; + char reserved1[4]; + char owner[0xe]; + char no_part; + char reserved2[0x1c]; + /* 16 Byte of some information on the dasd */ + short blocksize; + char nopart; + char unused; + long unused2[3]; + /* 7*10 = 70 Bytes of partition data */ + struct { + char type; + long start; + long size; + char unused; + } part[7]; + } __attribute__ ((packed)) label; +} dasd_volume_label_t; + +typedef union { + struct { + unsigned long no; + unsigned int ct; + } __attribute__ ((packed)) input; + struct { + unsigned long noct; + } __attribute__ ((packed)) output; +} __attribute__ ((packed)) dasd_xlate_t; + +int dasd_init (void); +#ifdef MODULE +int init_module (void); +void cleanup_module (void); +#endif /* MODULE */ + +/* Definitions for blk.h */ +/* #define DASD_MAGIC 0x44415344 is ascii-"DASD" */ +/* #define dasd_MAGIC 0x64617364; is ascii-"dasd" */ +#define DASD_MAGIC 0xC4C1E2C4 /* is ebcdic-"DASD" */ +#define dasd_MAGIC 0x8481A284 /* is ebcdic-"dasd" */ +#define DASD_NAME "dasd" +#define DASD_PARTN_BITS 2 +#define DASD_MAX_DEVICES (256>>DASD_PARTN_BITS) + +#define MAJOR_NR DASD_MAJOR +#define PARTN_BITS DASD_PARTN_BITS + +#ifdef __KERNEL__ +/* Now lets turn to the internal sbtuff */ +/* + 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 + */ +#define DASD_DEBUG 4 + +#define DASD_PROFILE +/* + define the level of paranoia + - 0 quite sure, that things are going right + - 1 sanity checking, only to avoid panics + - 2 normal sanity checking + - 3 extensive sanity checks + - 4 exhaustive debug messages + */ +#define DASD_PARANOIA 2 + +/* + define the depth of flow control, which is logged as a check condition + - 0 No flow control messages + - 1 Entry of functions logged like check condition + - 2 Entry and exit of functions logged like check conditions + - 3 Internal structure broken down + - 4 unrolling of loops,... + */ +#define DASD_FLOW_CONTROL 0 + +#if DASD_DEBUG > 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 */ + +#define INTERNAL_ERRMSG(x,y...) \ +"Internal error: in file " __FILE__ " line: %d: " x, __LINE__, y +#define INTERNAL_CHKMSG(x,y...) \ +"Inconsistency: in file " __FILE__ " line: %d: " x, __LINE__, y +#define INTERNAL_FLWMSG(x,y...) \ +"Flow control: file " __FILE__ " line: %d: " x, __LINE__, y + +#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 */ + +#if DASD_DEBUG > 3 +#define INTERNAL_FLOW(x...) PRINT_ERR ( INTERNAL_FLWMSG ( x ) ) +#elif DASD_DEBUG > 2 +#define INTERNAL_FLOW(x...) PRINT_WARN ( INTERNAL_FLWMSG ( x ) ) +#else +#define INTERNAL_FLOW(x...) +#endif /* DASD_DEBUG */ + +#if DASD_FLOW_CONTROL > 0 +#define FUNCTION_ENTRY(x) INTERNAL_FLOW( x "entered %s\n","" ); +#else +#define FUNCTION_ENTRY(x) +#endif /* DASD_FLOW_CONTROL */ + +#if DASD_FLOW_CONTROL > 1 +#define FUNCTION_EXIT(x) INTERNAL_FLOW( x "exited %s\n","" ); +#else +#define FUNCTION_EXIT(x) +#endif /* DASD_FLOW_CONTROL */ + +#if DASD_FLOW_CONTROL > 2 +#define FUNCTION_CONTROL(x...) INTERNAL_FLOW( x ); +#else +#define FUNCTION_CONTROL(x...) +#endif /* DASD_FLOW_CONTROL */ + +#if DASD_FLOW_CONTROL > 3 +#define LOOP_CONTROL(x...) INTERNAL_FLOW( x ); +#else +#define LOOP_CONTROL(x...) +#endif /* DASD_FLOW_CONTROL */ + +#define DASD_DO_IO_SLEEP 0x01 +#define DASD_DO_IO_NOLOCK 0x02 +#define DASD_DO_IO_NODEC 0x04 + +#define DASD_NOT_FORMATTED 0x01 + +extern wait_queue_head_t dasd_waitq; + +#undef DEBUG_DASD_MALLOC +#ifdef DEBUG_DASD_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_DASD_MALLOC */ + +#endif /* __KERNEL__ */ +#endif /* DASD_H */ + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-indent-level: 4 + * c-brace-imaginary-offset: 0 + * c-brace-offset: -4 + * c-argdecl-indent: 4 + * c-label-offset: -4 + * c-continued-statement-offset: 4 + * c-continued-brace-offset: 0 + * indent-tabs-mode: nil + * tab-width: 8 + * End: + */ |