patch-2.2.16 linux/include/linux/dasd.h

• Lines: 242
• Date: Wed Jun 7 14:26:44 2000
• Orig file: v2.2.15/linux/include/linux/dasd.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN v2.2.15/linux/include/linux/dasd.h linux/include/linux/dasd.h
@@ -0,0 +1,241 @@
+
+#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'
+/* Format the volume or an extent */
+#define BIODASDFORMAT  _IOW(IOCTL_LETTER,0,format_data_t) 
+/* Disable the volume (for Linux) */
+#define BIODASDDISABLE _IO(IOCTL_LETTER,1) 
+/* Enable the volume (for Linux) */
+#define BIODASDENABLE  _IO(IOCTL_LETTER,2) 
+/* 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)
+#define BIODASDRLB     _IOR(IOCTL_LETTER,7,int)
+#define BLKGETBSZ      _IOR(IOCTL_LETTER,8,int)
+
+typedef struct {
+	int start_unit;
+	int stop_unit;
+	int blksize;
+} format_data_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 MDSK_MAGIC 0xD4C4E2D2 /* is ebcdic-"MDSK" */
+#define mdsk_MAGIC 0x9484A292 /* is ebcdic-"mdsk" */
+#define ERP_MAGIC  0xC5D9D740 /* is ebcdic-"ERP" */
+#define erp_MAGIC  0x45999740 /* is ebcdic-"erp" */
+
+#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 struct wait_queue *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:
+ */