11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifndef _SCSI_SCSI_DEVICE_H 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define _SCSI_SCSI_DEVICE_H 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/list.h> 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/spinlock.h> 6ffedb4522571ac170f941678d138a31bc0884ab4James Bottomley#include <linux/workqueue.h> 7a4d04a4cd9881e89fdc62107b6b57053438f2b30Martin K. Petersen#include <linux/blkdev.h> 8d211f052fa58a053639bc51501cb64421157d362Hugh Dickins#include <scsi/scsi.h> 960063497a95e716c9a689af3be2687d261f115b4Arun Sharma#include <linux/atomic.h> 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11313162d0b83836e2f57e51b9b8650fb4b9c396eaPaul Gortmakerstruct device; 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct request_queue; 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct scsi_cmnd; 14e10fb91c4dc81a4ae47caf0828df152f600f2546James Bottomleystruct scsi_lun; 15ea73a9f23906c374b697cd5b0d64f6dceced63deJames Bottomleystruct scsi_sense_hdr; 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 171cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomleystruct scsi_mode_data { 181cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomley __u32 length; 191cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomley __u16 block_descriptor_length; 201cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomley __u8 medium_type; 211cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomley __u8 device_specific; 221cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomley __u8 header_length; 231cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomley __u8 longlba:1; 241cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomley}; 251cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomley 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sdev state: If you alter this, you also need to alter scsi_sysfs.c 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (for the ascii descriptions) and the state model enforcer: 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scsi_lib:scsi_device_set_state(). 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum scsi_device_state { 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDEV_CREATED = 1, /* device created but not added to sysfs 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Only internal commands allowed (for inq) */ 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDEV_RUNNING, /* device properly configured 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * All commands allowed */ 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDEV_CANCEL, /* beginning to delete device 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Only error handler commands allowed */ 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDEV_DEL, /* device deleted 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * no commands allowed */ 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDEV_QUIESCE, /* Device quiescent. No block commands 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will be accepted, only specials (which 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * originate in the mid-layer) */ 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDEV_OFFLINE, /* Device offlined (by error handling or 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * user request */ 456f4267e3bd1211b3d09130e626b0b3d885077610James Bottomley SDEV_BLOCK, /* Device blocked by scsi lld. No 466f4267e3bd1211b3d09130e626b0b3d885077610James Bottomley * scsi commands from user or midlayer 476f4267e3bd1211b3d09130e626b0b3d885077610James Bottomley * should be issued to the scsi 486f4267e3bd1211b3d09130e626b0b3d885077610James Bottomley * lld. */ 496f4267e3bd1211b3d09130e626b0b3d885077610James Bottomley SDEV_CREATED_BLOCK, /* same as above but for created devices */ 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 52a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzikenum scsi_device_event { 53a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik SDEV_EVT_MEDIA_CHANGE = 1, /* media has changed */ 54a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik 55a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik SDEV_EVT_LAST = SDEV_EVT_MEDIA_CHANGE, 56a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik SDEV_EVT_MAXBITS = SDEV_EVT_LAST + 1 57a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik}; 58a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik 59a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzikstruct scsi_event { 60a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik enum scsi_device_event evt_type; 61a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik struct list_head node; 62a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik 63a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik /* put union of data structures, for non-simple event types, 64a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik * here 65a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik */ 66a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik}; 67a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct scsi_device { 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host; 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct request_queue *request_queue; 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* the next two are protected by the host->host_lock */ 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head siblings; /* list of all devices on this host */ 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head same_target_siblings; /* just the devices sharing same target id */ 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 76c2a9331c62216e222a08de8dd58559367fef0af6<jejb@titanic.il.steeleye.com> /* this is now protected by the request_queue->queue_lock */ 7706f81ea8ca09b880cadf101d7e23b500e9c164bc<htejun@gmail.com> unsigned int device_busy; /* commands actually active on 7806f81ea8ca09b880cadf101d7e23b500e9c164bc<htejun@gmail.com> * low-level. protected by queue_lock. */ 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t list_lock; 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head cmd_list; /* queue of in use SCSI Command structures */ 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head starved_entry; 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *current_cmnd; /* currently active command */ 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short queue_depth; /* How deep of a queue we want */ 844a84067dbfce436b81779e585bf712b02ceee552Vasu Dev unsigned short max_queue_depth; /* max queue depth */ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short last_queue_full_depth; /* These two are used by */ 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short last_queue_full_count; /* scsi_track_queue_full() */ 874a84067dbfce436b81779e585bf712b02ceee552Vasu Dev unsigned long last_queue_full_time; /* last queue full time */ 884a84067dbfce436b81779e585bf712b02ceee552Vasu Dev unsigned long queue_ramp_up_period; /* ramp up period in jiffies */ 894a84067dbfce436b81779e585bf712b02ceee552Vasu Dev#define SCSI_DEFAULT_RAMP_UP_PERIOD (120 * HZ) 904a84067dbfce436b81779e585bf712b02ceee552Vasu Dev 914a84067dbfce436b81779e585bf712b02ceee552Vasu Dev unsigned long last_queue_ramp_up; /* last queue ramp up time */ 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int id, lun, channel; 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int manufacturer; /* Manufacturer of device, for using 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * vendor-specific cmd's */ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned sector_size; /* size in bytes */ 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *hostdata; /* available to low-level driver */ 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char type; 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char scsi_level; 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char inq_periph_qual; /* PQ from INQUIRY data */ 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char inquiry_len; /* valid bytes in 'inquiry' */ 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char * inquiry; /* INQUIRY response data */ 1057f23e146a122966bd58e5da9c16a0e12385f09fcJames Bottomley const char * vendor; /* [back_compat] point into 'inquiry' ... */ 1067f23e146a122966bd58e5da9c16a0e12385f09fcJames Bottomley const char * model; /* ... after scan; point to static string */ 1077f23e146a122966bd58e5da9c16a0e12385f09fcJames Bottomley const char * rev; /* ... "nullnullnullnull" before scan */ 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char current_tag; /* current tag */ 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_target *sdev_target; /* used only for single_lun */ 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int sdev_bflags; /* black/white flags as also found in 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scsi_devinfo.[hc]. For now used only to 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * pass settings from slave_alloc to scsi 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * core. */ 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned writeable:1; 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned removable:1; 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned changed:1; /* Data invalid due to media change */ 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned busy:1; /* Used to prevent races */ 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned lockable:1; /* Able to prevent media removal */ 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned locked:1; /* Media removal disabled */ 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned borken:1; /* Tell the Seagate driver to be 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * painfully slow on this device */ 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned disconnect:1; /* can disconnect */ 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned soft_reset:1; /* Uses soft reset option */ 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned sdtr:1; /* Device supports SDTR messages */ 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned wdtr:1; /* Device supports WDTR messages */ 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned ppr:1; /* Device supports PPR messages */ 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned tagged_supported:1; /* Supports SCSI-II tagged queuing */ 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned simple_tags:1; /* simple queue tag messages are enabled */ 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned ordered_tags:1;/* ordered queue tag messages are enabled */ 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned was_reset:1; /* There was a bus reset on the bus for 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this device */ 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * because we did a bus reset. */ 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned use_10_for_rw:1; /* first try 10-byte read / write */ 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */ 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned skip_ms_page_8:1; /* do not use MODE SENSE page 0x08 */ 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned skip_ms_page_3f:1; /* do not use MODE SENSE page 0x3f */ 13909b6b51b0b6c1b9bb61815baf205e4d74c89ff04Alan Stern unsigned skip_vpd_pages:1; /* do not read VPD pages */ 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */ 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned no_start_on_add:1; /* do not issue start on add */ 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned allow_restart:1; /* issue START_UNIT in error handler */ 143c3c94c5a2fb43a654e777f509d5032b0db8ed09fTejun Heo unsigned manage_start_stop:1; /* Let HLD (sd) manage start/stop */ 144d2886ea368a67704ecc13e69075f18a9d74cb12bStefan Richter unsigned start_stop_pwr_cond:1; /* Set power cond. in START_STOP_UNIT */ 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned no_uld_attach:1; /* disable connecting to upper level drivers */ 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned select_no_atn:1; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned fix_capacity:1; /* READ_CAPACITY is too high by 1 */ 14861bf54b71d5abf767ee46284be19965d7253ddbfOliver Neukum unsigned guess_capacity:1; /* READ_CAPACITY might be too high by 1 */ 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned retry_hwerror:1; /* Retry HARDWARE_ERROR */ 15018351070b86d155713cf790b26af4f21b1fd0b29Linus Torvalds unsigned last_sector_bug:1; /* do not use multisector accesses on 15118351070b86d155713cf790b26af4f21b1fd0b29Linus Torvalds SD_LAST_BUGGY_SECTORS */ 1528e04d8056c1ea0e0aab730994b74756f0526cda8Hans de Goede unsigned no_read_disc_info:1; /* Avoid READ_DISC_INFO cmds */ 1535ce524bdff367b4abda20bcfd4dafd9d30c773dfHans de Goede unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */ 154b18504e4a631e31edd939fe569342274927d4b41Alan Stern unsigned try_rc_10_first:1; /* Try READ_CAPACACITY_10 first */ 155860dc73608a091e0b325218acc2701709d5f221aJames Bottomley unsigned is_visible:1; /* is the device visible in sysfs */ 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 157a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */ 158a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik struct list_head event_list; /* asserted events */ 159a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik struct work_struct event_work; 160a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int device_blocked; /* Device returned QUEUE_FULL. */ 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int max_device_blocked; /* what device_blocked counts down from */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SCSI_DEFAULT_DEVICE_BLOCKED 3 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t iorequest_cnt; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t iodone_cnt; 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t ioerr_cnt; 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 170ee959b00c335d7780136c5abda37809191fe52c3Tony Jones struct device sdev_gendev, 171ee959b00c335d7780136c5abda37809191fe52c3Tony Jones sdev_dev; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 173ffedb4522571ac170f941678d138a31bc0884ab4James Bottomley struct execute_work ew; /* used to get process context on put */ 1749937a5e2f32892db0dbeefc2b3bc74b3ae3ea9c7Jens Axboe struct work_struct requeue_work; 175ffedb4522571ac170f941678d138a31bc0884ab4James Bottomley 176a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman struct scsi_dh_data *scsi_dh_data; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum scsi_device_state sdev_state; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long sdev_data[0]; 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} __attribute__((aligned(sizeof(unsigned long)))); 180a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman 181765cbc6dad16b87724803e359d6be792ddf08614Hannes Reineckestruct scsi_dh_devlist { 182765cbc6dad16b87724803e359d6be792ddf08614Hannes Reinecke char *vendor; 183765cbc6dad16b87724803e359d6be792ddf08614Hannes Reinecke char *model; 184765cbc6dad16b87724803e359d6be792ddf08614Hannes Reinecke}; 185765cbc6dad16b87724803e359d6be792ddf08614Hannes Reinecke 1863ae31f6a7b6e442fc6a92f29330fbad230dc3992Chandra Seetharamantypedef void (*activate_complete)(void *, int); 187a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharamanstruct scsi_device_handler { 188a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman /* Used by the infrastructure */ 189a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman struct list_head list; /* list of scsi_device_handlers */ 190a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman 191a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman /* Filled by the hardware handler */ 192a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman struct module *module; 193a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman const char *name; 194765cbc6dad16b87724803e359d6be792ddf08614Hannes Reinecke const struct scsi_dh_devlist *devlist; 195a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman int (*check_sense)(struct scsi_device *, struct scsi_sense_hdr *); 196765cbc6dad16b87724803e359d6be792ddf08614Hannes Reinecke int (*attach)(struct scsi_device *); 197765cbc6dad16b87724803e359d6be792ddf08614Hannes Reinecke void (*detach)(struct scsi_device *); 1983ae31f6a7b6e442fc6a92f29330fbad230dc3992Chandra Seetharaman int (*activate)(struct scsi_device *, activate_complete, void *); 199a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman int (*prep_fn)(struct scsi_device *, struct request *); 20018ee70c9d7b2dcd312a1f8c6536841e7c0fea5caChandra Seetharaman int (*set_params)(struct scsi_device *, const char *); 2016c3633d08acf514e2e89aa95d2346ce9d64d719aHannes Reinecke bool (*match)(struct scsi_device *); 202a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman}; 203a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman 204a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharamanstruct scsi_dh_data { 205a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman struct scsi_device_handler *scsi_dh; 2066c10db72c94818573552fd71c89540da325efdfbChandra Seetharaman struct scsi_device *sdev; 2076c10db72c94818573552fd71c89540da325efdfbChandra Seetharaman struct kref kref; 208a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman char buf[0]; 209a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman}; 210a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharaman 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define to_scsi_device(d) \ 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds container_of(d, struct scsi_device, sdev_gendev) 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define class_to_sdev(d) \ 214ee959b00c335d7780136c5abda37809191fe52c3Tony Jones container_of(d, struct scsi_device, sdev_dev) 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define transport_class_to_sdev(class_dev) \ 216ee959b00c335d7780136c5abda37809191fe52c3Tony Jones to_scsi_device(class_dev->parent) 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2189ccfc756a70d454dfa82f48897e2883560c01a0eJames Bottomley#define sdev_printk(prefix, sdev, fmt, a...) \ 2199ccfc756a70d454dfa82f48897e2883560c01a0eJames Bottomley dev_printk(prefix, &(sdev)->sdev_gendev, fmt, ##a) 2209ccfc756a70d454dfa82f48897e2883560c01a0eJames Bottomley 221a4d04a4cd9881e89fdc62107b6b57053438f2b30Martin K. Petersen#define scmd_printk(prefix, scmd, fmt, a...) \ 222a4d04a4cd9881e89fdc62107b6b57053438f2b30Martin K. Petersen (scmd)->request->rq_disk ? \ 223a4d04a4cd9881e89fdc62107b6b57053438f2b30Martin K. Petersen sdev_printk(prefix, (scmd)->device, "[%s] " fmt, \ 224a4d04a4cd9881e89fdc62107b6b57053438f2b30Martin K. Petersen (scmd)->request->rq_disk->disk_name, ##a) : \ 225a4d04a4cd9881e89fdc62107b6b57053438f2b30Martin K. Petersen sdev_printk(prefix, (scmd)->device, fmt, ##a) 22601d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik 227ffedb4522571ac170f941678d138a31bc0884ab4James Bottomleyenum scsi_target_state { 228643eb2d932c97a0583381629d632d486934cf7eeJames Bottomley STARGET_CREATED = 1, 229643eb2d932c97a0583381629d632d486934cf7eeJames Bottomley STARGET_RUNNING, 230ffedb4522571ac170f941678d138a31bc0884ab4James Bottomley STARGET_DEL, 231ffedb4522571ac170f941678d138a31bc0884ab4James Bottomley}; 232ffedb4522571ac170f941678d138a31bc0884ab4James Bottomley 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scsi_target: representation of a scsi target, for now, this is only 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * used for single_lun devices. If no one has active IO to the target, 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * starget_sdev_user is NULL, else it points to the active sdev. 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct scsi_target { 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *starget_sdev_user; 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head siblings; 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head devices; 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct device dev; 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int reap_ref; /* protected by the host lock */ 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int channel; 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int id; /* target id ... replace 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scsi_device.id eventually */ 2471bfc5d9d5eb8e1a2efacc306bc55c248ed259a8eAlan Stern unsigned int create:1; /* signal that it needs to be added */ 24825d7c363f2663fe399e623c9bd819258c9760bdcTony Battersby unsigned int single_lun:1; /* Indicates we should only 24925d7c363f2663fe399e623c9bd819258c9760bdcTony Battersby * allow I/O to one of the luns 25025d7c363f2663fe399e623c9bd819258c9760bdcTony Battersby * for the device at a time. */ 251de8c46bfc032fbdf490cfb67f534d2a0188ebeb0Alan Stern unsigned int pdt_1f_for_no_lun:1; /* PDT = 0x1f 252de8c46bfc032fbdf490cfb67f534d2a0188ebeb0Alan Stern * means no lun present. */ 25309b6b51b0b6c1b9bb61815baf205e4d74c89ff04Alan Stern unsigned int no_report_luns:1; /* Don't use 25409b6b51b0b6c1b9bb61815baf205e4d74c89ff04Alan Stern * REPORT LUNS for scanning. */ 255f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie /* commands actually active on LLD. protected by host lock. */ 256f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie unsigned int target_busy; 257f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie /* 258f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie * LLDs should set this in the slave_alloc host template callout. 259f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie * If set to zero then there is not limit. 260f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie */ 261f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie unsigned int can_queue; 262f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie unsigned int target_blocked; 263f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie unsigned int max_target_blocked; 264f0c0a376d0fcd4c5579ecf5e95f88387cba85211Mike Christie#define SCSI_DEFAULT_TARGET_BLOCKED 3 2651bfc5d9d5eb8e1a2efacc306bc55c248ed259a8eAlan Stern 2666f3a20242db2597312c50abc11f1e747c5d2326aJames Bottomley char scsi_level; 267ffedb4522571ac170f941678d138a31bc0884ab4James Bottomley struct execute_work ew; 268ffedb4522571ac170f941678d138a31bc0884ab4James Bottomley enum scsi_target_state state; 269a283bd37d00e92e8874ca6325ae071691d4db388James Bottomley void *hostdata; /* available to low-level driver */ 270a283bd37d00e92e8874ca6325ae071691d4db388James Bottomley unsigned long starget_data[0]; /* for the transport */ 271a283bd37d00e92e8874ca6325ae071691d4db388James Bottomley /* starget_data must be the last element!!!! */ 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} __attribute__((aligned(sizeof(unsigned long)))); 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define to_scsi_target(d) container_of(d, struct scsi_target, dev) 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct scsi_target *scsi_target(struct scsi_device *sdev) 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return to_scsi_target(sdev->sdev_gendev.parent); 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define transport_class_to_starget(class_dev) \ 280ee959b00c335d7780136c5abda37809191fe52c3Tony Jones to_scsi_target(class_dev->parent) 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2829ccfc756a70d454dfa82f48897e2883560c01a0eJames Bottomley#define starget_printk(prefix, starget, fmt, a...) \ 2839ccfc756a70d454dfa82f48897e2883560c01a0eJames Bottomley dev_printk(prefix, &(starget)->dev, fmt, ##a) 2849ccfc756a70d454dfa82f48897e2883560c01a0eJames Bottomley 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct scsi_device *__scsi_add_device(struct Scsi_Host *, 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uint, uint, uint, void *hostdata); 287146f7262ee0ec7fc6882f06e5fcb13883308073cJames Bottomleyextern int scsi_add_device(struct Scsi_Host *host, uint channel, 288146f7262ee0ec7fc6882f06e5fcb13883308073cJames Bottomley uint target, uint lun); 289a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharamanextern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh); 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_remove_device(struct scsi_device *); 291a6a8d9f87eb8510a8f53672ea87703f62185d75fChandra Seetharamanextern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh); 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int scsi_device_get(struct scsi_device *); 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_device_put(struct scsi_device *); 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct scsi_device *scsi_device_lookup(struct Scsi_Host *, 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uint, uint, uint); 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct scsi_device *__scsi_device_lookup(struct Scsi_Host *, 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uint, uint, uint); 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *, 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uint); 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct scsi_device *__scsi_device_lookup_by_target(struct scsi_target *, 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uint); 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void starget_for_each_device(struct scsi_target *, void *, 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void (*fn)(struct scsi_device *, void *)); 305522939d45c293388e6a360210905f9230298df16Maciej W. Rozyckiextern void __starget_for_each_device(struct scsi_target *, void *, 306522939d45c293388e6a360210905f9230298df16Maciej W. Rozycki void (*fn)(struct scsi_device *, 307522939d45c293388e6a360210905f9230298df16Maciej W. Rozycki void *)); 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* only exposed to implement shost_for_each_device */ 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct scsi_device *__scsi_iterate_devices(struct Scsi_Host *, 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *); 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 3143e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * shost_for_each_device - iterate over all devices of a host 3153e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * @sdev: the &struct scsi_device to use as a cursor 3163e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * @shost: the &struct scsi_host to iterate over 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3183e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * Iterator that returns each device attached to @shost. This loop 3193e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * takes a reference on each device and releases it at the end. If 3203e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * you break out of the loop, you must call scsi_device_put(sdev). 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define shost_for_each_device(sdev, shost) \ 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for ((sdev) = __scsi_iterate_devices((shost), NULL); \ 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (sdev); \ 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (sdev) = __scsi_iterate_devices((shost), (sdev))) 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 3283e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * __shost_for_each_device - iterate over all devices of a host (UNLOCKED) 3293e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * @sdev: the &struct scsi_device to use as a cursor 3303e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * @shost: the &struct scsi_host to iterate over 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3323e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * Iterator that returns each device attached to @shost. It does _not_ 3333e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * take a reference on the scsi_device, so the whole loop must be 3343e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * protected by shost->host_lock. 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3363e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * Note: The only reason to use this is because you need to access the 3373e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * device list in interrupt context. Otherwise you really want to use 3383e082a910d217b2e7b186077ebf5a1126a68c62fMatthew Wilcox * shost_for_each_device instead. 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define __shost_for_each_device(sdev, shost) \ 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry((sdev), &((shost)->__devices), siblings) 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_adjust_queue_depth(struct scsi_device *, int, int); 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int scsi_track_queue_full(struct scsi_device *, int); 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int scsi_set_medium_removal(struct scsi_device *, char); 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *buffer, int len, int timeout, 3501cf72699c1530c3e4ac3d58344f6a6a40a2f46d3James Bottomley int retries, struct scsi_mode_data *data, 351ea73a9f23906c374b697cd5b0d64f6dceced63deJames Bottomley struct scsi_sense_hdr *); 3525baba830e93732e802dc7e0a362eb730e1917f58James Bottomleyextern int scsi_mode_select(struct scsi_device *sdev, int pf, int sp, 3535baba830e93732e802dc7e0a362eb730e1917f58James Bottomley int modepage, unsigned char *buffer, int len, 3545baba830e93732e802dc7e0a362eb730e1917f58James Bottomley int timeout, int retries, 3555baba830e93732e802dc7e0a362eb730e1917f58James Bottomley struct scsi_mode_data *data, 3565baba830e93732e802dc7e0a362eb730e1917f58James Bottomley struct scsi_sense_hdr *); 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int scsi_test_unit_ready(struct scsi_device *sdev, int timeout, 358001aac257cf8adbe90cdcba6e07f8d12dfc8fa6bJames Bottomley int retries, struct scsi_sense_hdr *sshdr); 359e3deec090558d5cb5ffdc574e5560f3ed9723394James Bottomleyextern int scsi_get_vpd_page(struct scsi_device *, u8 page, unsigned char *buf, 360e3deec090558d5cb5ffdc574e5560f3ed9723394James Bottomley int buf_len); 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int scsi_device_set_state(struct scsi_device *sdev, 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum scsi_device_state state); 363a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzikextern struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type, 364a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik gfp_t gfpflags); 365a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzikextern void sdev_evt_send(struct scsi_device *sdev, struct scsi_event *evt); 366a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzikextern void sdev_evt_send_simple(struct scsi_device *sdev, 367a341cd0f6a0fde1f85fec9aa8f81f824ea4a3f92Jeff Garzik enum scsi_device_event evt_type, gfp_t gfpflags); 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int scsi_device_quiesce(struct scsi_device *sdev); 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_device_resume(struct scsi_device *sdev); 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_target_quiesce(struct scsi_target *); 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_target_resume(struct scsi_target *); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_scan_target(struct device *parent, unsigned int channel, 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int id, unsigned int lun, int rescan); 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_target_reap(struct scsi_target *); 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_target_block(struct device *); 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_target_unblock(struct device *); 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void scsi_remove_target(struct device *); 3782f4701d8274c8663f5c50323dc72fefa24b55091James.Smart@Emulex.Comextern void int_to_scsilun(unsigned int, struct scsi_lun *); 379462b7859a07c9c2b060fa2b5b1d49f8b33706d4eChristof Schmittextern int scsilun_to_int(struct scsi_lun *); 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern const char *scsi_device_state_name(enum scsi_device_state); 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int scsi_is_sdev_device(const struct device *); 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int scsi_is_target_device(const struct device *); 38333aa687db90dd8541bd5e9a762eebf880eaee767James Bottomleyextern int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, 38433aa687db90dd8541bd5e9a762eebf880eaee767James Bottomley int data_direction, void *buffer, unsigned bufflen, 38533aa687db90dd8541bd5e9a762eebf880eaee767James Bottomley unsigned char *sense, int timeout, int retries, 386f4f4e47e4af6b02dd1c425b931c65d0165356e33FUJITA Tomonori int flag, int *resid); 387ea73a9f23906c374b697cd5b0d64f6dceced63deJames Bottomleyextern int scsi_execute_req(struct scsi_device *sdev, const unsigned char *cmd, 388ea73a9f23906c374b697cd5b0d64f6dceced63deJames Bottomley int data_direction, void *buffer, unsigned bufflen, 389f4f4e47e4af6b02dd1c425b931c65d0165356e33FUJITA Tomonori struct scsi_sense_hdr *, int timeout, int retries, 390f4f4e47e4af6b02dd1c425b931c65d0165356e33FUJITA Tomonori int *resid); 39133aa687db90dd8541bd5e9a762eebf880eaee767James Bottomley 392bc4f24014de58f045f169742701a6598884d93dbAlan Stern#ifdef CONFIG_PM_RUNTIME 393bc4f24014de58f045f169742701a6598884d93dbAlan Sternextern int scsi_autopm_get_device(struct scsi_device *); 394bc4f24014de58f045f169742701a6598884d93dbAlan Sternextern void scsi_autopm_put_device(struct scsi_device *); 395bc4f24014de58f045f169742701a6598884d93dbAlan Stern#else 396bc4f24014de58f045f169742701a6598884d93dbAlan Sternstatic inline int scsi_autopm_get_device(struct scsi_device *d) { return 0; } 397bc4f24014de58f045f169742701a6598884d93dbAlan Sternstatic inline void scsi_autopm_put_device(struct scsi_device *d) {} 398bc4f24014de58f045f169742701a6598884d93dbAlan Stern#endif /* CONFIG_PM_RUNTIME */ 399bc4f24014de58f045f169742701a6598884d93dbAlan Stern 400cb5d9e0948122dd8b808550574d95bd60674ba3bAndrew Mortonstatic inline int __must_check scsi_device_reprobe(struct scsi_device *sdev) 401e28482c5b24006e9e4a867f9995baf358cbc1059James Bottomley{ 402cb5d9e0948122dd8b808550574d95bd60674ba3bAndrew Morton return device_reprobe(&sdev->sdev_gendev); 403e28482c5b24006e9e4a867f9995baf358cbc1059James Bottomley} 404e28482c5b24006e9e4a867f9995baf358cbc1059James Bottomley 40501d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzikstatic inline unsigned int sdev_channel(struct scsi_device *sdev) 40601d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik{ 40701d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik return sdev->channel; 40801d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik} 40901d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik 41001d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzikstatic inline unsigned int sdev_id(struct scsi_device *sdev) 41101d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik{ 41201d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik return sdev->id; 41301d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik} 41401d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik 41501d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik#define scmd_id(scmd) sdev_id((scmd)->device) 41601d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik#define scmd_channel(scmd) sdev_channel((scmd)->device) 41701d7b3b8d09ef78e2c835c03d97ea1d91c26e245Jeff Garzik 4180f1d87a2acb8fd1f2ef8af109a785123ddc1a6cbJames Bottomley/* 4190f1d87a2acb8fd1f2ef8af109a785123ddc1a6cbJames Bottomley * checks for positions of the SCSI state machine 4200f1d87a2acb8fd1f2ef8af109a785123ddc1a6cbJames Bottomley */ 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int scsi_device_online(struct scsi_device *sdev) 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4230762a4824d6c6f8eb5d2646dfda95581d99afaa5Hannes Reinecke return (sdev->sdev_state != SDEV_OFFLINE && 4240762a4824d6c6f8eb5d2646dfda95581d99afaa5Hannes Reinecke sdev->sdev_state != SDEV_DEL); 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4260f1d87a2acb8fd1f2ef8af109a785123ddc1a6cbJames Bottomleystatic inline int scsi_device_blocked(struct scsi_device *sdev) 4270f1d87a2acb8fd1f2ef8af109a785123ddc1a6cbJames Bottomley{ 4286f4267e3bd1211b3d09130e626b0b3d885077610James Bottomley return sdev->sdev_state == SDEV_BLOCK || 4296f4267e3bd1211b3d09130e626b0b3d885077610James Bottomley sdev->sdev_state == SDEV_CREATED_BLOCK; 4300f1d87a2acb8fd1f2ef8af109a785123ddc1a6cbJames Bottomley} 4310f1d87a2acb8fd1f2ef8af109a785123ddc1a6cbJames Bottomleystatic inline int scsi_device_created(struct scsi_device *sdev) 4320f1d87a2acb8fd1f2ef8af109a785123ddc1a6cbJames Bottomley{ 4336f4267e3bd1211b3d09130e626b0b3d885077610James Bottomley return sdev->sdev_state == SDEV_CREATED || 4346f4267e3bd1211b3d09130e626b0b3d885077610James Bottomley sdev->sdev_state == SDEV_CREATED_BLOCK; 4350f1d87a2acb8fd1f2ef8af109a785123ddc1a6cbJames Bottomley} 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* accessor functions for the SCSI parameters */ 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int scsi_device_sync(struct scsi_device *sdev) 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sdev->sdtr; 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int scsi_device_wide(struct scsi_device *sdev) 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sdev->wdtr; 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int scsi_device_dt(struct scsi_device *sdev) 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sdev->ppr; 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int scsi_device_dt_only(struct scsi_device *sdev) 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->inquiry_len < 57) 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (sdev->inquiry[56] & 0x0c) == 0x04; 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int scsi_device_ius(struct scsi_device *sdev) 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->inquiry_len < 57) 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sdev->inquiry[56] & 0x01; 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int scsi_device_qas(struct scsi_device *sdev) 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->inquiry_len < 57) 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sdev->inquiry[56] & 0x02; 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 468b30c2fc1113edfb2371427c10503ff942b0a0370James Bottomleystatic inline int scsi_device_enclosure(struct scsi_device *sdev) 469b30c2fc1113edfb2371427c10503ff942b0a0370James Bottomley{ 470d1e12de804f9d8ad114786ca7c2ce593cba79891Krishnasamy, Somasundaram return sdev->inquiry ? (sdev->inquiry[6] & (1<<6)) : 1; 471b30c2fc1113edfb2371427c10503ff942b0a0370James Bottomley} 472d7b8bcb0a0819315a51cae620ff7ae0c1704c069Michael Tokarev 4737027ad72a689797475973c6feb5f0b673382f779Martin K. Petersenstatic inline int scsi_device_protection(struct scsi_device *sdev) 4747027ad72a689797475973c6feb5f0b673382f779Martin K. Petersen{ 475d211f052fa58a053639bc51501cb64421157d362Hugh Dickins return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0); 4767027ad72a689797475973c6feb5f0b673382f779Martin K. Petersen} 4777027ad72a689797475973c6feb5f0b673382f779Martin K. Petersen 478d7c48feb38a5cb6d863d69fd5ef6c309971ebe31Hannes Reineckestatic inline int scsi_device_tpgs(struct scsi_device *sdev) 479d7c48feb38a5cb6d863d69fd5ef6c309971ebe31Hannes Reinecke{ 480d7c48feb38a5cb6d863d69fd5ef6c309971ebe31Hannes Reinecke return sdev->inquiry ? (sdev->inquiry[5] >> 4) & 0x3 : 0; 481d7c48feb38a5cb6d863d69fd5ef6c309971ebe31Hannes Reinecke} 482d7c48feb38a5cb6d863d69fd5ef6c309971ebe31Hannes Reinecke 483d7b8bcb0a0819315a51cae620ff7ae0c1704c069Michael Tokarev#define MODULE_ALIAS_SCSI_DEVICE(type) \ 484d7b8bcb0a0819315a51cae620ff7ae0c1704c069Michael Tokarev MODULE_ALIAS("scsi:t-" __stringify(type) "*") 485d7b8bcb0a0819315a51cae620ff7ae0c1704c069Michael Tokarev#define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x" 486d7b8bcb0a0819315a51cae620ff7ae0c1704c069Michael Tokarev 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* _SCSI_SCSI_DEVICE_H */ 488