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Diffstat (limited to 'c/src/libblock/include/rtems/blkdev.h')
| -rw-r--r-- | c/src/libblock/include/rtems/blkdev.h | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/c/src/libblock/include/rtems/blkdev.h b/c/src/libblock/include/rtems/blkdev.h deleted file mode 100644 index ca3b5ba5e2..0000000000 --- a/c/src/libblock/include/rtems/blkdev.h +++ /dev/null @@ -1,147 +0,0 @@ -/* - * blkdev.h - block device driver interface definitions - * - * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia - * Author: Victor V. Vengerov <vvv@oktet.ru> - * - * @(#) $Id$ - */ - -#ifndef __RTEMS_LIBBLOCK_BLKDEV_H__ -#define __RTEMS_LIBBLOCK_BLKDEV_H__ - -#include <rtems.h> -#include <sys/ioctl.h> - -#ifdef __cplusplus -extern "C" { -#endif - -/* Interface with device drivers - * Block device looks, initialized and behaves like traditional RTEMS device - * driver. Heart of the block device driver is in BIOREQUEST ioctl. This call - * puts I/O request to the block device queue, in priority order, for - * asynchronous processing. When driver executes request, req_done - * function invoked, so callee knows about it. Look for details below. - */ - - -/* Block device block number datatype */ -typedef rtems_unsigned32 blkdev_bnum; - -/* Block device request type */ -typedef enum blkdev_request_op { - BLKDEV_REQ_READ, /* Read operation */ - BLKDEV_REQ_WRITE /* Write operation */ -} blkdev_request_op; - -/* Type for block device request done callback function. - * - * PARAMETERS: - * arg - argument supplied in blkdev_request - * status - rtems status code for this operation - * errno - errno value to be passed to the user when - * status != RTEMS_SUCCESSFUL - */ -typedef void (* blkdev_request_cb)(void *arg, - rtems_status_code status, - int error); - -/* blkdev_sg_buffer - * Block device scatter/gather buffer structure - */ -typedef struct blkdev_sg_buffer { - rtems_unsigned32 length; /* Buffer length */ - void *buffer; /* Buffer pointer */ -} blkdev_sg_buffer; - -/* blkdev_request (Block Device Request) structure is - * used to read/write a number of blocks from/to device. - */ -typedef struct blkdev_request { - blkdev_request_op req; /* Block device operation (read or write) */ - blkdev_request_cb req_done; /* Callback function */ - void *done_arg; /* Argument to be passed to callback function*/ - blkdev_bnum start; /* Start block number */ - rtems_unsigned32 count; /* Number of blocks to be exchanged */ - rtems_unsigned32 bufnum; /* Number of buffers provided */ - - blkdev_sg_buffer bufs[0];/* List of scatter/gather buffers */ -} blkdev_request; - -/* Block device IOCTL request codes */ -#define BLKIO_REQUEST _IOWR('B', 1, blkdev_request) -#define BLKIO_GETBLKSIZE _IO('B', 2) -#define BLKIO_GETSIZE _IO('B', 3) -#define BLKIO_SYNCDEV _IO('B', 4) - -/* Device driver interface conventions suppose that driver may - * contain initialize/open/close/read/write/ioctl entry points. These - * primitives (except initialize) can be implemented in generic fashion, - * based upon supplied block device driver ioctl handler. Every block - * device driver should provide initialize entry point, which is register - * all block devices and appropriate ioctl handlers. - */ - -#define GENERIC_BLOCK_DEVICE_DRIVER_ENTRIES \ - rtems_blkdev_generic_open, rtems_blkdev_generic_close, \ - rtems_blkdev_generic_read, rtems_blkdev_generic_write, \ - rtems_blkdev_generic_ioctl - -/* blkdev_generic_read -- - * Generic block device read primitive. Implemented using block device - * buffer management primitives. - */ -rtems_device_driver -rtems_blkdev_generic_read( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -); - -/* blkdev_generic_write -- - * Generic block device driver write primitive. Implemented using block - * device buffer management primitives. - */ -rtems_device_driver -rtems_blkdev_generic_write( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -); - -/* blkdev_generic_open -- - * Generic block device open primitive. - */ -rtems_device_driver -rtems_blkdev_generic_open( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -); - -/* blkdev_generic_close -- - * Generic block device close primitive. - */ -rtems_device_driver -rtems_blkdev_generic_close( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -); - -/* blkdev_generic_ioctl -- - * Generic block device ioctl primitive. - */ -rtems_device_driver -rtems_blkdev_generic_ioctl( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -); - -#ifdef __cplusplus -} -#endif - -#endif |