diff options
Diffstat (limited to 'include/scsi/scsi_host.h')
| -rw-r--r-- | include/scsi/scsi_host.h | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 7f1f411d07af..68f461b7a835 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -129,6 +129,11 @@ struct scsi_host_template { * 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 @@ -139,20 +144,6 @@ struct scsi_host_template { /* 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); @@ -335,6 +326,19 @@ struct scsi_host_template { 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 */ int (*resume)(struct scsi_device *); |