diff options
Diffstat (limited to 'include')
-rw-r--r-- | include/scsi/scsi.h | 11 | ||||
-rw-r--r-- | include/scsi/scsi_cmnd.h | 28 | ||||
-rw-r--r-- | include/scsi/scsi_device.h | 3 | ||||
-rw-r--r-- | include/scsi/scsi_host.h | 10 |
4 files changed, 30 insertions, 22 deletions
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 1d54c06..659ecf48 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -295,6 +295,8 @@ struct scsi_lun { #define DID_PASSTHROUGH 0x0a /* Force command past mid-layer */ #define DID_SOFT_ERROR 0x0b /* The low level driver just wish a retry */ #define DID_IMM_RETRY 0x0c /* Retry without decrementing retry count */ +#define DID_REQUEUE 0x0d /* Requeue command (no immediate retry) also + * without decrementing the retry count */ #define DRIVER_OK 0x00 /* Driver status */ /* @@ -360,6 +362,15 @@ struct scsi_lun { #define sense_error(sense) ((sense) & 0xf) #define sense_valid(sense) ((sense) & 0x80); +/* + * default timeouts +*/ +#define FORMAT_UNIT_TIMEOUT (2 * 60 * 60 * HZ) +#define START_STOP_TIMEOUT (60 * HZ) +#define MOVE_MEDIUM_TIMEOUT (5 * 60 * HZ) +#define READ_ELEMENT_STATUS_TIMEOUT (5 * 60 * HZ) +#define READ_DEFECT_DATA_TIMEOUT (60 * HZ ) + #define IDENTIFY_BASE 0x80 #define IDENTIFY(can_disconnect, lun) (IDENTIFY_BASE |\ diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 9d9871c..07f5c69 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -43,21 +43,17 @@ struct scsi_cmnd { void (*done) (struct scsi_cmnd *); /* Mid-level done function */ /* - * A SCSI Command is assigned a nonzero serial_number when internal_cmnd - * passes it to the driver's queue command function. The serial_number - * is cleared when scsi_done is entered indicating that the command has - * been completed. If a timeout occurs, the serial number at the moment - * of timeout is copied into serial_number_at_timeout. By subsequently - * comparing the serial_number and serial_number_at_timeout fields - * during abort or reset processing, we can detect whether the command - * has already completed. This also detects cases where the command has - * completed and the SCSI Command structure has already being reused - * for another command, so that we can avoid incorrectly aborting or - * resetting the new command. - * The serial number is only unique per host. + * A SCSI Command is assigned a nonzero serial_number before passed + * to the driver's queue command function. The serial_number is + * cleared when scsi_done is entered indicating that the command + * has been completed. It currently doesn't have much use other + * than printk's. Some lldd's use this number for other purposes. + * It's almost certain that such usages are either incorrect or + * meaningless. Please kill all usages other than printk's. Also, + * as this number is always identical to ->pid, please convert + * printk's to use ->pid, so that we can kill this field. */ unsigned long serial_number; - unsigned long serial_number_at_timeout; int retries; int allowed; @@ -65,12 +61,6 @@ struct scsi_cmnd { int timeout_total; int timeout; - /* - * We handle the timeout differently if it happens when a reset, - * abort, etc are in process. - */ - unsigned volatile char internal_timeout; - unsigned char cmd_len; unsigned char old_cmd_len; enum dma_data_direction sc_data_direction; diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index fe9571d..c018020 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -44,7 +44,8 @@ struct scsi_device { struct list_head same_target_siblings; /* just the devices sharing same target id */ /* this is now protected by the request_queue->queue_lock */ - volatile unsigned short device_busy; /* commands actually active on low-level */ + unsigned int device_busy; /* commands actually active on + * low-level. protected by queue_lock. */ spinlock_t list_lock; struct list_head cmd_list; /* queue of in use SCSI Command structures */ struct list_head starved_entry; diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 27f2c4e..1cee1e1 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -448,8 +448,14 @@ struct Scsi_Host { wait_queue_head_t host_wait; struct scsi_host_template *hostt; struct scsi_transport_template *transportt; - volatile unsigned short host_busy; /* commands actually active on low-level */ - volatile unsigned short host_failed; /* commands that failed. */ + + /* + * The following two fields are protected with host_lock; + * however, eh routines can safely access during eh processing + * without acquiring the lock. + */ + unsigned int host_busy; /* commands actually active on low-level */ + unsigned int host_failed; /* commands that failed. */ unsigned short host_no; /* Used for IOCTL_GET_IDLUN, /proc/scsi et al. */ int resetting; /* if set, it means that last_reset is a valid value */ |