niu: Refinements to kernel logging.

[safe/jmp/linux-2.6] / drivers / block / cciss.h

diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index 11ee835..1d95db2 100644 (file)
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -2,18 +2,21 @@
 #define CCISS_H
 
 #include <linux/genhd.h>
+#include <linux/mutex.h>
 
 #include "cciss_cmd.h"
 
 
-#define NWD            16
 #define NWD_SHIFT      4
 #define MAX_PART       (1 << NWD_SHIFT)
 
 #define IO_OK          0
 #define IO_ERROR       1
+#define IO_NEEDS_RETRY  3
 
-#define MAJOR_NR COMPAQ_CISS_MAJOR
+#define VENDOR_LEN     8
+#define MODEL_LEN      16
+#define REV_LEN                4
 
 struct ctlr_info;
 typedef struct ctlr_info ctlr_info_t;
@@ -27,7 +30,7 @@ struct access_method {
 };
 typedef struct _drive_info_struct
 {
-       __u32   LunID;  
+       unsigned char LunID[8];
        int     usage_count;
        struct request_queue *queue;
        sector_t nr_blocks;
@@ -35,10 +38,30 @@ typedef struct _drive_info_struct
        int     heads;
        int     sectors;
        int     cylinders;
-       int     raid_level;
+       int     raid_level; /* set to -1 to indicate that
+                            * the drive is not in use/configured
+                            */
+       int     busy_configuring; /* This is set when a drive is being removed
+                                  * to prevent it from being opened or it's
+                                  * queue from being started.
+                                  */
+       struct  device dev;
+       __u8 serial_no[16]; /* from inquiry page 0x83,
+                            * not necc. null terminated.
+                            */
+       char vendor[VENDOR_LEN + 1]; /* SCSI vendor string */
+       char model[MODEL_LEN + 1];   /* SCSI model string */
+       char rev[REV_LEN + 1];       /* SCSI revision string */
+       char device_initialized;     /* indicates whether dev is initialized */
 } drive_info_struct;
 
-struct ctlr_info 
+struct Cmd_sg_list {
+       SGDescriptor_struct     *sgchain;
+       dma_addr_t              sg_chain_dma;
+       int                     chain_block_size;
+};
+
+struct ctlr_info
 {
        int     ctlr;
        char    devname[8];
@@ -48,10 +71,8 @@ struct ctlr_info
        __u32   board_id;
        void __iomem *vaddr;
        unsigned long paddr;
-       unsigned long io_mem_addr;
-       unsigned long io_mem_length;
+       int     nr_cmds; /* Number of commands allowed on this controller */
        CfgTable_struct __iomem *cfgtable;
-       unsigned int intr;
        int     interrupts_enabled;
        int     major;
        int     max_commands;
@@ -60,15 +81,36 @@ struct ctlr_info
        int     num_luns;
        int     highest_lun;
        int     usage_count;  /* number of opens all all minor devices */
+       /* Need space for temp sg list
+        * number of scatter/gathers supported
+        * number of scatter/gathers in chained block
+        */
+       struct  scatterlist **scatter_list;
+       int     maxsgentries;
+       int     chainsize;
+       int     max_cmd_sgentries;
+       struct Cmd_sg_list **cmd_sg_list;
+
+#      define DOORBELL_INT     0
+#      define PERF_MODE_INT    1
+#      define SIMPLE_MODE_INT  2
+#      define MEMQ_MODE_INT    3
+       unsigned int intr[4];
+       unsigned int msix_vector;
+       unsigned int msi_vector;
+       int     cciss_max_sectors;
+       BYTE    cciss_read;
+       BYTE    cciss_write;
+       BYTE    cciss_read_capacity;
 
        // information about each logical volume
-       drive_info_struct drv[CISS_MAX_LUN];
+       drive_info_struct *drv[CISS_MAX_LUN];
 
        struct access_method access;
 
        /* queue and queue Info */ 
-       CommandList_struct *reqQ;
-       CommandList_struct  *cmpQ;
+       struct hlist_head reqQ;
+       struct hlist_head cmpQ;
        unsigned int Qdepth;
        unsigned int maxQsinceinit;
        unsigned int maxSG;
@@ -84,6 +126,8 @@ struct ctlr_info
        int                     nr_frees; 
        int                     busy_configuring;
        int                     busy_initializing;
+       int                     busy_scanning;
+       struct mutex            busy_shutting_down;
 
        /* This element holds the zero based queue number of the last
         * queue to be started.  It is used for fairness.
@@ -91,10 +135,16 @@ struct ctlr_info
        int                     next_to_run;
 
        // Disk structures we need to pass back
-       struct gendisk   *gendisk[NWD];
+       struct gendisk   *gendisk[CISS_MAX_LUN];
 #ifdef CONFIG_CISS_SCSI_TAPE
        void *scsi_ctlr; /* ptr to structure containing scsi related stuff */
+       /* list of block side commands the scsi error handling sucked up */
+       /* and saved for later processing */
 #endif
+       unsigned char alive;
+       struct list_head scan_list;
+       struct completion scan_wait;
+       struct device dev;
 };
 
 /*  Defining the diffent access_menthods */
@@ -259,6 +309,7 @@ struct board_type {
        __u32   board_id;
        char    *product_name;
        struct access_method *access;
+       int nr_cmds; /* Max cmds this kind of ctlr can handle. */
 };
 
 #define CCISS_LOCK(i)  (&hba[i]->lock)