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types.h

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/* $Id: types.h 31603 2008-05-12 06:54:17Z adam $ */
/*****************************************************************************/
/*****************************************************************************/
#ifndef _GENERIC_BLK_TYPES_H
#define _GENERIC_BLK_TYPES_H

/* L4 includes */
#include <l4/sys/types.h>
#include <l4/semaphore/semaphore.h>
#include <l4/dm_generic/types.h>

/*****************************************************************************
 *** Types
 *****************************************************************************/

typedef l4_uint32_t l4blk_driver_id_t;

typedef l4_uint32_t l4blk_driver_t;

typedef L4_CV void (* l4blk_setup_notify_callback_fn_t) (void);

typedef l4_uint32_t l4blk_stream_t;

typedef struct l4blk_request l4blk_request_t;

typedef L4_CV void (* l4blk_callback_fn_t) (l4blk_request_t * request, 
                                            int status, 
                                            int error);

typedef struct l4blk_sg_phys_elem
{
  l4_addr_t addr;                  
  l4_size_t size;                  
} l4blk_sg_phys_elem_t;

typedef struct l4blk_sg_ds_elem
{
  l4dm_dataspace_t ds;             
  l4_offs_t        offs;           
  l4_size_t        size;           
} l4blk_sg_ds_elem_t;

typedef struct l4blk_blk_request
{
  l4_uint32_t         req_handle;  
  l4_uint32_t         cmd;         
  l4_uint32_t         device;      
  l4_uint32_t         block;       
  l4_uint32_t         count;       

  /* real-time requests */
  l4blk_stream_t      stream;      
  l4_uint32_t         req_no;      
  l4_uint32_t         flags;       
} l4blk_blk_request_t;

struct l4blk_request
{
  l4blk_driver_t      driver;      
 
  l4blk_blk_request_t request;     

  /* buffer scatter-gather list */
  void *              sg_list;     
  int                 sg_num;      
  int                 sg_type;     
  /* client request handling */
  l4_uint32_t         status;      
  int                 error;       
  l4semaphore_t *     wait;        
  l4blk_callback_fn_t done;        

  /* client data */
  void *              data;        
};

/* request commands */
#define L4BLK_REQUEST_READ      0x00000001  
#define L4BLK_REQUEST_WRITE     0x00000002  
/* block size in bytes */
#define L4BLK_BLKSIZE           1024        

/* request flags */
#define L4BLK_REQUEST_METADATA  0x00000001  
/* scatter-gather list types */
#define L4BLK_SG_PHYS           0x00000001  
#define L4BLK_SG_DS             0x00000002  
/* request status */
#define L4BLK_UNPROCESSED       0x00000000  
#define L4BLK_DONE              0x00000001  
#define L4BLK_ERROR             0x00000002  
#define L4BLK_SKIPPED           0x00000003  
/* misc. */
#define L4BLK_INVALID_DRIVER    (-1)        
#define L4BLK_INVALID_STREAM    (-1)        
/* dafault ctrls */
#define L4BLK_CTRL_NUM_DISKS     0x00000001 
#define L4BLK_CTRL_DISK_SIZE     0x00000002 
#define L4BLK_CTRL_DISK_GEOM     0x00000003 
#define L4BLK_CTRL_RREAD_PART    0x00000004 
#define L4BLK_CTRL_MAX_SG_LEN    0x00000005 
#define L4BLK_CTRL_STREAM_PERIOD 0x00000006 
/* ctrls needed by L4Linux stub */
#define L4BLK_CTRL_DRV_IRQ       0x00008000 
typedef struct l4blk_disk_geometry
{
  l4_uint32_t heads;               
  l4_uint32_t cylinders;           
  l4_uint32_t sectors;             
  l4_uint32_t start;               
} l4blk_disk_geometry_t;

typedef struct l4blk_disk_period
{
  l4_uint32_t period_len;          
  l4_uint32_t period_offs;         
} l4blk_disk_period_t;

#endif /* !_GENERIC_BLK_TYPES_H */

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