patch-2.2.14 linux/drivers/s390/block/mdisk.h

• Lines: 72
• Date: Tue Jan 4 10:12:18 2000
• Orig file: v2.2.13/linux/drivers/s390/block/mdisk.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.13/linux/drivers/s390/block/mdisk.h linux/drivers/s390/block/mdisk.h
@@ -0,0 +1,71 @@
+/*
+ *  drivers/s390/block/mdisk.h
+ *    VM minidisk device driver.
+ *
+ *  S390 version
+ *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Hartmut Penner (hp@de.ibm.com)
+ */
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#define MDISK_DEVS 4                   /* for disks                        */
+#define MDISK_RAHEAD 8                 /* read ahead                       */
+#define MDISK_BLKSIZE 1024             /* 1k blocks                        */
+#define MDISK_HARDSECT 512             /* FIXME -- 512 byte blocks         */
+#define MDISK_MAXSECTORS 256           /* max sectors for one request      */
+
+
+
+/* 
+ * low level io defines for diagnose 250
+ */
+
+#define MDISK_WRITE_REQ 0x01                                                 
+#define MDISK_READ_REQ  0x02                                                   
+
+#define MDISK_SYNC      0x01
+#define MDISK_ASYNC     0x03
+#define INIT_BIO        0x00
+#define RW_BIO          0x01
+#define TERM_BIO        0x02
+
+/*
+ * This stucture is used for clustered request
+ * up to 256 different request can be handled with one invocation
+ */
+
+typedef struct {
+        u8      type;
+        u8      status;
+        u16     spare1;
+        u32     block_number;
+        u32     alet;
+        u32     buffer;
+} mdisk_bio_t;
+
+typedef struct {
+        u16     dev_nr;
+        u16     spare1[11];
+        u32     block_size;
+        u32     offset;
+        u32     start_block;
+        u32     end_block;
+        u32     spare2[6];
+} mdisk_init_io_t;
+ 
+typedef struct {
+        u16     dev_nr;
+        u16     spare1[11];
+        u8      key;
+        u8      flags;
+        u16     spare2;
+        u32     block_count;
+        u32     alet;
+        u32     bio_list;
+        u32     interrupt_params;
+        u32     spare3[5];
+} mdisk_rw_io_t;
+
+