kernel/linux.git/include/scsi/scsi.h, branch linux-7.0.y

scsi: core: Introduce an enumeration type for the SCSI_MLQUEUE constants

2025-12-17T03:20:26+00:00

Multiple functions in the SCSI core accept an 'int reason' argument. The 'int' type of these arguments doesn't make it clear what values are acceptable for these arguments. Document which values are supported for these arguments by introducing the enumeration type scsi_qc_status. 'qc' in the type name stands for 'queuecommand' since the values passed as the 'reason' argument are the .queuecommand() return values. Cc: John Garry Cc: Hannes Reinecke Signed-off-by: Bart Van Assche Link: https://patch.msgid.link/20251113181730.1109331-1-bvanassche@acm.org Signed-off-by: Martin K. Petersen

scsi: core: Don't use "proxy" headers

2024-04-25T01:27:15+00:00

Update header inclusions to follow IWYU (Include What You Use) principle. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20240423211843.3996046-1-andriy.shevchenko@linux.intel.com Signed-off-by: Martin K. Petersen

scsi: core: Add function return kernel-doc for 2 functions

2024-04-09T02:10:06+00:00

Add missing function return values to prevent kernel-doc warnings: scsi.h:75: warning: No description found for return value of 'scsi_status_is_check_condition' scsi.h:202: warning: No description found for return value of 'scsi_status_is_good' Signed-off-by: Randy Dunlap Link: https://lore.kernel.org/r/20240408025425.18778-7-rdunlap@infradead.org Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: core: ata: Do no try to probe for CDL on old drives

2023-09-22T01:07:23+00:00

Some old drives (e.g. an Ultra320 SCSI disk as reported by John) do not seem to execute MAINTENANCE_IN / MI_REPORT_SUPPORTED_OPERATION_CODES commands correctly and hang when a non-zero service action is specified (one command format with service action case in scsi_report_opcode()). Currently, CDL probing with scsi_cdl_check_cmd() is the only caller using a non zero service action for scsi_report_opcode(). To avoid issues with these old drives, do not attempt CDL probe if the device reports support for an SPC version lower than 5 (CDL was introduced in SPC-5). To keep things working with ATA devices which probe for the CDL T2A and T2B pages introduced with SPC-6, modify ata_scsiop_inq_std() to claim SPC-6 version compatibility for ATA drives supporting CDL. SPC-6 standard version number is defined as Dh (= 13) in SPC-6 r09. Fix scsi_probe_lun() to correctly capture this value by changing the bit mask for the second byte of the INQUIRY response from 0x7 to 0xf. include/scsi/scsi.h is modified to add the definition SCSI_SPC_6 with the value 14 (Dh + 1). The missing definitions for the SCSI_SPC_4 and SCSI_SPC_5 versions are also added. Reported-by: John David Anglin Fixes: 624885209f31 ("scsi: core: Detect support for command duration limits") Cc: stable@vger.kernel.org Signed-off-by: Damien Le Moal Link: https://lore.kernel.org/r/20230915022034.678121-1-dlemoal@kernel.org Tested-by: David Gow Reviewed-by: Bart Van Assche Reviewed-by: Niklas Cassel Signed-off-by: Martin K. Petersen

scsi: sd: Convert SCSI errors to PR errors

2022-12-01T03:22:23+00:00

This converts the SCSI errors we commonly see during PR handling to PR_STS errors or -Exyz errors. pr_ops callers can then handle SCSI and NVMe errors without knowing the device types. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20221122032603.32766-4-michael.christie@oracle.com Reviewed-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Signed-off-by: Martin K. Petersen

scsi: core: Introduce enums for the SAM and host status codes

2021-06-03T03:09:39+00:00

Make it possible for the compiler to verify whether SAM and host status codes are used correctly. [mkp: resolve conflicts with Hannes' SCSI result series] Link: https://lore.kernel.org/r/20210524025457.11299-3-bvanassche@acm.org Cc: Hannes Reinecke Reviewed-by: John Garry Reviewed-by: Himanshu Madhani Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: core: Drop obsolete Linux-specific SCSI status codes

2021-06-01T03:59:18+00:00

Originally the SCSI subsystem has been using 'special' SCSI status codes, which were the SAM-specified ones but shifted by 1. As most drivers have now been modified to use the SAM-specified ones, having two nearly identical sets of definitions only causes confusion. The Linux-specifed SCSI status codes have been marked obsolete for several years so drop them and use the SAM-specified status codes throughout. Link: https://lore.kernel.org/r/20210427083046.31620-41-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Douglas Gilbert Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen

scsi: core: Drop message byte helper

2021-06-01T02:48:24+00:00

The message byte is now unused, so we can drop the helper to set the message byte and the check for message bytes during error recovery. Link: https://lore.kernel.org/r/20210427083046.31620-38-hare@suse.de Reviewed-by: Bart Van Assche Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen

scsi: core: Drop the now obsolete driver_byte definitions

2021-06-01T02:48:22+00:00

The driver_byte field in the result is now unused, so we can drop the definitions. Link: https://lore.kernel.org/r/20210427083046.31620-15-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen

scsi: core: Introduce scsi_status_is_check_condition()

2021-06-01T02:48:21+00:00

Add a helper function scsi_status_is_check_condition() to encapsulate the frequent checks for SAM_STAT_CHECK_CONDITION. Link: https://lore.kernel.org/r/20210427083046.31620-9-hare@suse.de Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen