* the LLD. When the driver is finished processing the command
* the done callback is invoked.
*
+ * This is called to inform the LLD to transfer
+ * cmd->request_bufflen bytes. The cmd->use_sg speciefies the
+ * number of scatterlist entried in the command and
+ * cmd->request_buffer contains the scatterlist.
+ *
* return values: see queuecommand
*
* If the LLD accepts the cmd, it should set the result to an
/* TODO: rename */
int (* transfer_response)(struct scsi_cmnd *,
void (*done)(struct scsi_cmnd *));
- /*
- * This is called to inform the LLD to transfer cmd->request_bufflen
- * bytes of the cmd at cmd->offset in the cmd. The cmd->use_sg
- * speciefies the number of scatterlist entried in the command
- * and cmd->request_buffer contains the scatterlist.
- *
- * If the command cannot be processed in one transfer_data call
- * becuase a scatterlist within the LLD's limits cannot be
- * created then transfer_data will be called multiple times.
- * It is initially called from process context, and later
- * calls are from the interrup context.
- */
- int (* transfer_data)(struct scsi_cmnd *,
- void (*done)(struct scsi_cmnd *));
/* Used as callback for the completion of task management request. */
int (* tsk_mgmt_response)(u64 mid, int result);
*/
int (*proc_info)(struct Scsi_Host *, char *, char **, off_t, int, int);
+ /*
+ * This is an optional routine that allows the transport to become
+ * involved when a scsi io timer fires. The return value tells the
+ * timer routine how to finish the io timeout handling:
+ * EH_HANDLED: I fixed the error, please complete the command
+ * EH_RESET_TIMER: I need more time, reset the timer and
+ * begin counting again
+ * EH_NOT_HANDLED Begin normal error recovery
+ *
+ * Status: OPTIONAL
+ */
+ enum scsi_eh_timer_return (* eh_timed_out)(struct scsi_cmnd *);
+
/*
* suspend support
*/