summaryrefslogtreecommitdiff
path: root/drivers/scsi/mvsas
AgeCommit message (Collapse)Author
2025-05-20scsi: mvsas: Fix typos in SAS/SATA VSP register commentsAlok Tiwari
Correct spelling mistakes of the SAS/SATA Vendor Specific Port Registers. Fixed "Vednor" to "Vendor" in VSR_PHY_VS0 and VSR_PHY_VS1 comments. This is a non-functional change aimed at improving code clarity. Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com> Link: https://lore.kernel.org/r/20250517192422.310489-1-alok.a.tiwari@oracle.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-04-05treewide: Switch/rename to timer_delete[_sync]()Thomas Gleixner
timer_delete[_sync]() replaces del_timer[_sync](). Convert the whole tree over and remove the historical wrapper inlines. Conversion was done with coccinelle plus manual fixups where necessary. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2025-02-03scsi: mvsas: Remove unused mvs_phys_reset()Dr. David Alan Gilbert
mvs_phys_reset() was added in 2009's commit 20b09c2992fe ("[SCSI] mvsas: add support for 94xx; layout change; bug fixes") but hasn't been used. Remove it. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Link: https://lore.kernel.org/r/20250127002601.113555-1-linux@treblig.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-12-09scsi: Constify struct pci_device_idChristophe JAILLET
'struct pci_device_id' is not modified in these drivers. Constifying this structure moves some data to a read-only section, so increase overall security. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 70237 9137 320 79694 1374e drivers/scsi/3w-9xxx.o After: ===== text data bss dec hex filename 70461 8913 320 79694 1374e drivers/scsi/3w-9xxx.o Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/fc61b1946488c1ea8f7a17a06cf40fbd05dcc6de.1733590049.git.christophe.jaillet@wanadoo.fr Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-10-02move asm/unaligned.h to linux/unaligned.hAl Viro
asm/unaligned.h is always an include of asm-generic/unaligned.h; might as well move that thing to linux/unaligned.h and include that - there's nothing arch-specific in that header. auto-generated by the following: for i in `git grep -l -w asm/unaligned.h`; do sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i done for i in `git grep -l -w asm-generic/unaligned.h`; do sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i done git mv include/asm-generic/unaligned.h include/linux/unaligned.h git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
2024-05-22Merge tag 'driver-core-6.10-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the small set of driver core and kernfs changes for 6.10-rc1. Nothing major here at all, just a small set of changes for some driver core apis, and minor fixups. Included in here are: - sysfs_bin_attr_simple_read() helper added and used - device_show_string() helper added and used All usages of these were acked by the various maintainers. Also in here are: - kernfs minor cleanup - removed unused functions - typo fix in documentation - pay attention to sysfs_create_link() failures in module.c finally All of these have been in linux-next for a very long time with no reported problems" * tag 'driver-core-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: device property: Fix a typo in the description of device_get_child_node_count() kernfs: mount: Remove unnecessary ‘NULL’ values from knparent scsi: Use device_show_string() helper for sysfs attributes platform/x86: Use device_show_string() helper for sysfs attributes perf: Use device_show_string() helper for sysfs attributes IB/qib: Use device_show_string() helper for sysfs attributes hwmon: Use device_show_string() helper for sysfs attributes driver core: Add device_show_string() helper for sysfs attributes treewide: Use sysfs_bin_attr_simple_read() helper sysfs: Add sysfs_bin_attr_simple_read() helper module: don't ignore sysfs_create_link() failures driver core: Remove unused platform_notify, platform_notify_remove
2024-05-04scsi: Use device_show_string() helper for sysfs attributesLukas Wunner
Deduplicate sysfs ->show() callbacks which expose a string at a static memory location. Use the newly introduced device_show_string() helper in the driver core instead by declaring those sysfs attributes with DEVICE_STRING_ATTR_RO(). No functional change intended. Signed-off-by: Lukas Wunner <lukas@wunner.de> Link: https://lore.kernel.org/r/b11792137186f5a6794f12fdf891d0c6d51b3557.1713608122.git.lukas@wunner.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-03-25Merge patch series "Add LIBSAS_SHT_BASE for libsas"Martin K. Petersen
John Garry <john.g.garry@oracle.com> says: There is much duplication in the scsi_host_template structure for the drivers which use libsas. Similar to how a standard template is used in libata with __ATA_BASE_SHT, create a standard template in LIBSAS_SHT_BASE. Link: https://lore.kernel.org/r/20240308114339.1340549-1-john.g.garry@oracle.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-03-25scsi: mvsas: Use LIBSAS_SHT_BASEJohn Garry
Use standard template for scsi_host_template structure to reduce duplication. Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20240308114339.1340549-6-john.g.garry@oracle.com Reviewed-by: Igor Pylypiv <ipylypiv@google.com> Reviewed-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-03-25scsi: mvsas: Add libsas SATA sysfs attributes groupIgor Pylypiv
The added sysfs attributes group enables the configuration of NCQ Priority feature for HBAs that rely on libsas to manage SATA devices. Reviewed-by: John Garry <john.g.garry@oracle.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Jason Yan <yanaijie@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Igor Pylypiv <ipylypiv@google.com> Link: https://lore.kernel.org/r/20240307214418.3812290-5-ipylypiv@google.com Reviewed-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-21scsi: libsas: Delete sas_ssp_task.task_prioJohn Garry
Since libsas was introduced in commit 2908d778ab3e ("[SCSI] aic94xx: new driver"), sas_ssp_task.task_prio is never set, so delete it and any references which depend on it being set (all of them). Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20230815115156.343535-8-john.g.garry@oracle.com Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-21scsi: libsas: Delete sas_ssp_task.enable_first_burstJohn Garry
Since libsas was introduced in commit 2908d778ab3e ("[SCSI] aic94xx: new driver"), sas_ssp_task.enable_first_burst is never set, so delete it and any references. Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20230815115156.343535-7-john.g.garry@oracle.com Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-21scsi: libsas: Delete struct scsi_coreJohn Garry
Since commit 79855d178557 ("libsas: remove task_collector mode"), struct scsi_core only contains a reference to the shost. struct scsi_core is only used in sas_ha_struct.core, so delete scsi_core and replace with a reference to the shost there. Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20230815115156.343535-5-john.g.garry@oracle.com Reviewed-by: Jason Yan <yanaijie@huawei.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-21scsi: libsas: Delete enum sas_phy_typeJohn Garry
enum sas_phy_type is used for asd_sas_phy.type, which is only ever set, so delete this member and the enum. Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20230815115156.343535-4-john.g.garry@oracle.com Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-21scsi: libsas: Delete enum sas_classJohn Garry
enum sas_class prob would have been useful if function sas_show_class() was ever implemented, which it wasn't. enum sas_class is used as asd_sas_port.class and asd_sas_phy.class, which are only ever set, so delete these members and the enum. Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20230815115156.343535-3-john.g.garry@oracle.com Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-21scsi: libsas: Delete sas_ha_struct.lldd_moduleJohn Garry
Since libsas was introduced in commit 2908d778ab3e ("[SCSI] aic94xx: new driver"), sas_ha_struct.lldd_module has only ever been set, so remove it. Struct scsi_host_template already has a reference to the LLD driver module as to stop the driver being removed unexpectedly. Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20230815115156.343535-2-john.g.garry@oracle.com Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-05-31scsi: Add HAS_IOPORT dependenciesNiklas Schnelle
In a future patch HAS_IOPORT=n will result in inb()/outb() and friends not being declared. We thus need to add HAS_IOPORT as dependency for those drivers using them. Co-developed-by: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Link: https://lore.kernel.org/r/20230522105049.1467313-32-schnelle@linux.ibm.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-03-24scsi: mvsas: Declare SCSI host template constBart Van Assche
Make it explicit that the SCSI host template is not modified. Reviewed-by: John Garry <john.g.garry@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20230322195515.1267197-57-bvanassche@acm.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-10-22scsi: mvsas: Use sas_task_find_rq() for taggingJohn Garry
The request associated with a SCSI command coming from the block layer has a unique tag, so use that when possible for getting a slot. Unfortunately we don't support reserved commands in the SCSI midlayer yet. As such, SMP tasks - as an example - will not have a request associated, so in the interim continue to manage those tags for that type of sas_task internally. We reserve an arbitrary 4 tags for these internal tags. Indeed, we already decrement MVS_RSVD_SLOTS by 2 for the shost can_queue when flag MVF_FLAG_SOC is set. This change was made in commit 20b09c2992fe ("[SCSI] mvsas: add support for 94xx; layout change; bug fixes"), but what those 2 slots are used for is not obvious. Also make the tag management functions static, where possible. Signed-off-by: John Garry <john.garry@huawei.com> Link: https://lore.kernel.org/r/1666091763-11023-8-git-send-email-john.garry@huawei.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-10-22scsi: mvsas: Delete mvs_tag_init()John Garry
All mvs_tag_init() does is zero the tag bitmap, but this is already done with the kzalloc() call to alloc the tags, so delete this unneeded function. Signed-off-by: John Garry <john.garry@huawei.com> Link: https://lore.kernel.org/r/1666091763-11023-7-git-send-email-john.garry@huawei.com Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-10-18scsi: mvsas: Use sas_find_attached_phy_id() instead of open coding itJason Yan
The attached phy finding is open coded. Replace it with sas_find_attached_phy_id(). To keep things consistent, the return value of mvs_dev_found_notify() is also changed to -ENODEV after calling sas_find_attathed_phy_id() failed. Signed-off-by: Jason Yan <yanaijie@huawei.com> Link: https://lore.kernel.org/r/20220928070130.3657183-5-yanaijie@huawei.com Reviewed-by: Jack Wang <jinpu.wang@ionos.com> Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-04-06scsi: mvsas: Add PCI ID of RocketRaid 2640Alexey Galakhov
The HighPoint RocketRaid 2640 is a low-cost SAS controller based on Marvell chip. The chip in question was already supported by the kernel, just the PCI ID of this particular board was missing. Link: https://lore.kernel.org/r/20220309212535.402987-1-agalakhov@gmail.com Signed-off-by: Alexey Galakhov <agalakhov@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-22scsi: mvsas: Fix a set-but-not-used warningBart Van Assche
This patch fixes the following compiler warning: drivers/scsi/mvsas/mv_init.c: In function ‘mvs_pci_init’: drivers/scsi/mvsas/mv_init.c:497:30: warning: variable ‘mpi’ set but not used [-Wunused-but-set-variable] 497 | struct mvs_prv_info *mpi; | ^~~ Link: https://lore.kernel.org/r/20220218195117.25689-36-bvanassche@acm.org Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-19scsi: libsas: Add sas_abort_task()John Garry
Add a generic implementation of abort task TMF handler, and use in LLDDs. With that, some LLDDs custom TMF functions can now be deleted. Link: https://lore.kernel.org/r/1645112566-115804-18-git-send-email-john.garry@huawei.com Tested-by: Yihang Li <liyihang6@hisilicon.com> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-19scsi: libsas: Add sas_query_task()John Garry
Add a generic implementation of query task TMF handler, and use in LLDDs. Link: https://lore.kernel.org/r/1645112566-115804-17-git-send-email-john.garry@huawei.com Tested-by: Yihang Li <liyihang6@hisilicon.com> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-19scsi: libsas: Add sas_lu_reset()John Garry
Add a generic implementation of LU reset TMF handler, and use in LLDDs. Link: https://lore.kernel.org/r/1645112566-115804-16-git-send-email-john.garry@huawei.com Tested-by: Yihang Li <liyihang6@hisilicon.com> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-19scsi: libsas: Add sas_clear_task_set()John Garry
Add a generic implementation of clear task set TMF handler, and use in LLDDs. Link: https://lore.kernel.org/r/1645112566-115804-15-git-send-email-john.garry@huawei.com Tested-by: Yihang Li <liyihang6@hisilicon.com> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-19scsi: libsas: Add sas_abort_task_set()John Garry
Add a generic implementation of abort task set TMF handler, and use in LLDDs. Link: https://lore.kernel.org/r/1645112566-115804-14-git-send-email-john.garry@huawei.com Tested-by: Yihang Li <liyihang6@hisilicon.com> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-19scsi: libsas: Add sas_task.tmfJohn Garry
Add a pointer to a sas_tmf_task to the sas_task struct, as this will be used when the common LLDD TMF code is factored out. Also set it for the LLDDs to store per-sas_task TMF info. Link: https://lore.kernel.org/r/1645112566-115804-9-git-send-email-john.garry@huawei.com Tested-by: Yihang Li <liyihang6@hisilicon.com> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-19scsi: libsas: Add struct sas_tmf_taskJohn Garry
Some of the LLDDs which use libsas have their own definition of a struct to hold TMF info, so add a common struct for libsas. Also add an interim force phy id field for hisi_sas driver, which will be removed once the STP "TMF" code is factored out. Even though some LLDDs (pm8001) use a u32 for the tag, u16 will be adequate, as that named driver only uses tags in range [0, 1024). Link: https://lore.kernel.org/r/1645112566-115804-8-git-send-email-john.garry@huawei.com Tested-by: Yihang Li <liyihang6@hisilicon.com> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-19scsi: libsas: Delete lldd_clear_aca callbackJohn Garry
This callback is never called, so remove support. Link: https://lore.kernel.org/r/1645112566-115804-4-git-send-email-john.garry@huawei.com Tested-by: Yihang Li <liyihang6@hisilicon.com> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Jack Wang <jinpu.wang@ionos.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-19scsi: libsas: Use enum for response frame DATAPRES fieldJohn Garry
As defined in table 126 of the SAS spec 1.1, use an enum for the DATAPRES field, which makes reading the code easier. Also change sas_ssp_task_response() to use a switch statement, which is more suitable (than if-else), as suggested by Christoph. Link: https://lore.kernel.org/r/1645112566-115804-3-git-send-email-john.garry@huawei.com Suggested-by: Xiang Chen <chenxiang66@hisilicon.com> Tested-by: Yihang Li <liyihang6@hisilicon.com> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Jack Wang <jinpu.wang@ionos.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-11scsi: libsas: Drop SAS_TASK_AT_INITIATORJohn Garry
This flag is now only ever set, so delete it. This also avoids a use-after-free in the pm8001 queue path, as reported in the following: https://lore.kernel.org/linux-scsi/c3cb7228-254e-9584-182b-007ac5e6fe0a@huawei.com/T/#m28c94c6d3ff582ec4a9fa54819180740e8bd4cfb https://lore.kernel.org/linux-scsi/0cc0c435-b4f2-9c76-258d-865ba50a29dd@huawei.com/ [mkp: checkpatch + two SAS_TASK_AT_INITIATOR references] Link: https://lore.kernel.org/r/1644489804-85730-3-git-send-email-john.garry@huawei.com Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-01-31scsi: mvsas: Replace snprintf() with sysfs_emit()Yang Guang
coccinelle report: ./drivers/scsi/mvsas/mv_init.c:699:8-16: WARNING: use scnprintf or sprintf ./drivers/scsi/mvsas/mv_init.c:747:8-16: WARNING: use scnprintf or sprintf Use sysfs_emit() instead of scnprintf() or sprintf(). Link: https://lore.kernel.org/r/c1711f7cf251730a8ceb5bdfc313bf85662b3395.1643182948.git.yang.guang5@zte.com.cn Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Yang Guang <yang.guang5@zte.com.cn> Signed-off-by: David Yang <davidcomponentone@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-12-22scsi: mvsas: Add spin_lock/unlock() to protect asd_sas_port->phy_listXiang Chen
phy_list_lock is not held when using asd_sas_port->phy_list in the mvsas driver. Add spin_lock/unlock in those places. Link: https://lore.kernel.org/r/1639999298-244569-7-git-send-email-chenxiang66@hisilicon.com Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-10-16scsi: mvsas: Switch to attribute groupsBart Van Assche
struct device supports attribute groups directly but does not support struct device_attribute directly. Hence switch to attribute groups. Link: https://lore.kernel.org/r/20211012233558.4066756-31-bvanassche@acm.org Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-22scsi: mvsas: Use DEVICE_ATTR_RO()/RW() macroZhen Lei
Use DEVICE_ATTR_RO()/RW() macro helper instead of plain DEVICE_ATTR(), which makes the code a bit shorter and easier to read. Link: https://lore.kernel.org/r/20210616034419.725-5-thunder.leizhen@huawei.com Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-22scsi: libsas: Add LUN number check in .slave_alloc callbackYufen Yu
Offlining a SATA device connected to a hisi SAS controller and then scanning the host will result in detecting 255 non-existent devices: # lsscsi [2:0:0:0] disk ATA Samsung SSD 860 2B6Q /dev/sda [2:0:1:0] disk ATA WDC WD2003FYYS-3 1D01 /dev/sdb [2:0:2:0] disk SEAGATE ST600MM0006 B001 /dev/sdc # echo "offline" > /sys/block/sdb/device/state # echo "- - -" > /sys/class/scsi_host/host2/scan # lsscsi [2:0:0:0] disk ATA Samsung SSD 860 2B6Q /dev/sda [2:0:1:0] disk ATA WDC WD2003FYYS-3 1D01 /dev/sdb [2:0:1:1] disk ATA WDC WD2003FYYS-3 1D01 /dev/sdh ... [2:0:1:255] disk ATA WDC WD2003FYYS-3 1D01 /dev/sdjb After a REPORT LUN command issued to the offline device fails, the SCSI midlayer tries to do a sequential scan of all devices whose LUN number is not 0. However, SATA does not support LUN numbers at all. Introduce a generic sas_slave_alloc() handler which will return -ENXIO for SATA devices if the requested LUN number is larger than 0 and make libsas drivers use this function as their .slave_alloc callback. Link: https://lore.kernel.org/r/20210622034037.1467088-1-yuyufen@huawei.com Reported-by: Wu Bo <wubo40@huawei.com> Suggested-by: John Garry <john.garry@huawei.com> Reviewed-by: John Garry <john.garry@huawei.com> Reviewed-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Yufen Yu <yuyufen@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: libsas: Introduce more SAM status code aliases in enum exec_statusBart Van Assche
This patch prepares for converting SAM status codes into an enum. Without this patch converting SAM status codes into an enumeration type would trigger complaints about enum type mismatches for the SAS code. Link: https://lore.kernel.org/r/20210524025457.11299-2-bvanassche@acm.org Cc: Hannes Reinecke <hare@suse.com> Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Cc: Jason Yan <yanaijie@huawei.com> Reviewed-by: John Garry <john.garry@huawei.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Acked-by: Jack Wang <jinpu.wang@ionos.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-01scsi: mvsas: Avoid -Wempty-body warningArnd Bergmann
Building with 'make W=1' shows a few harmless -Wempty-body warning for the mvsas driver: drivers/scsi/mvsas/mv_94xx.c: In function 'mvs_94xx_phy_reset': drivers/scsi/mvsas/mv_94xx.c:278:63: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] 278 | mv_dprintk("phy hard reset failed.\n"); | ^ drivers/scsi/mvsas/mv_sas.c: In function 'mvs_task_prep': drivers/scsi/mvsas/mv_sas.c:723:57: error: suggest braces around empty body in an 'else' statement [-Werror=empty-body] 723 | SAS_ADDR(dev->sas_addr)); | ^ Change the empty dprintk() macros to no_printk(), which avoids this warning and adds format string checking. Link: https://lore.kernel.org/r/20210322103316.620694-1-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22scsi: mvsas: Switch back to original libsas event notifiersAhmed S. Darwish
libsas event notifiers required an extension where gfp_t flags must be explicitly passed. For bisectability, a temporary _gfp() variant of such functions were added. All call sites then got converted use the _gfp() variants and explicitly pass GFP context. Having no callers left, the original libsas notifiers were then modified to accept gfp_t flags by default. Switch back to the original libas API, while still passing GFP context. The libsas _gfp() variants will be removed afterwards. Link: https://lore.kernel.org/r/20210118100955.1761652-19-a.darwish@linutronix.de Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22scsi: mvsas: Pass gfp_t flags to libsas event notifiersAhmed S. Darwish
mvsas calls the non _gfp version of the libsas event notifiers API, leading to the buggy call chains below: mvsas/mv_sas.c: mvs_work_queue() [process context] spin_lock_irqsave(mvs_info::lock, ) -> libsas/sas_event.c: sas_notify_phy_event() -> sas_alloc_event() -> in_interrupt() = false -> invalid GFP_KERNEL allocation -> libsas/sas_event.c: sas_notify_port_event() -> sas_alloc_event() -> in_interrupt() = false -> invalid GFP_KERNEL allocation Use the new event notifiers API instead, which requires callers to explicitly pass the gfp_t memory allocation flags. Below are context analysis for the modified functions: => mvs_bytes_dmaed(): Since it is invoked from both process and atomic contexts, let its callers pass the gfp_t flags. Call chains: scsi_scan.c: do_scsi_scan_host() [has msleep()] -> shost->hostt->scan_start() -> [mvsas/mv_init.c: Scsi_Host::scsi_host_template .scan_start = mvs_scan_start()] -> mvsas/mv_sas.c: mvs_scan_start() -> mvs_bytes_dmaed(..., GFP_KERNEL) mvsas/mv_sas.c: mvs_work_queue() spin_lock_irqsave(mvs_info::lock,) -> mvs_bytes_dmaed(..., GFP_ATOMIC) mvsas/mv_64xx.c: mvs_64xx_isr() || mvsas/mv_94xx.c: mvs_94xx_isr() -> mvsas/mv_chips.h: mvs_int_full() -> mvsas/mv_sas.c: mvs_int_port() -> mvs_bytes_dmaed(..., GFP_ATOMIC); => mvs_work_queue(): Invoked from process context, but it calls all the libsas event notifier APIs under a spin_lock_irqsave(). Pass GFP_ATOMIC. Link: https://lore.kernel.org/r/20210118100955.1761652-5-a.darwish@linutronix.de Fixes: 1c393b970e0f ("scsi: libsas: Use dynamic alloced work to avoid sas event lost") Cc: Jason Yan <yanaijie@huawei.com> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22scsi: libsas: Remove notifier indirectionJohn Garry
LLDDs report events to libsas with .notify_port_event and .notify_phy_event callbacks. These callbacks are fixed and so there is no reason why the functions cannot be called directly, so do that. This neatens the code slightly, makes it more obvious, and reduces function pointer usage, which is generally a good thing. Downside is that there are 2x more symbol exports. [a.darwish@linutronix.de: Remove the now unused "sas_ha" local variables] Link: https://lore.kernel.org/r/20210118100955.1761652-3-a.darwish@linutronix.de Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jack Wang <jinpu.wang@cloud.ionos.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-20scsi: mvsas: Remove superfluous memset()Li Heng
Fixes coccicheck warning: ./drivers/scsi/mvsas/mv_init.c:244:11-29: WARNING: dma_alloc_coherent use in mvi -> tx already zeroes out memory, so memset is not needed ./drivers/scsi/mvsas/mv_init.c:250:15-33: WARNING: dma_alloc_coherent use in mvi -> rx_fis already zeroes out memory, so memset is not needed ./drivers/scsi/mvsas/mv_init.c:256:11-29: WARNING: dma_alloc_coherent use in mvi -> rx already zeroes out memory, so memset is not needed ./drivers/scsi/mvsas/mv_init.c:265:13-31: WARNING: dma_alloc_coherent use in mvi -> slot already zeroes out memory, so memset is not needed dma_alloc_coherent() already zeroes out memory so memset() is not needed. Link: https://lore.kernel.org/r/1596078235-54002-1-git-send-email-liheng40@huawei.com Signed-off-by: Li Heng <liheng40@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-06Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull SCSI updates from James Bottomley: "This consists of the usual driver updates (ufs, qla2xxx, tcmu, lpfc, hpsa, zfcp, scsi_debug) and minor bug fixes. We also have a huge docbook fix update like most other subsystems and no major update to the core (the few non trivial updates are either minor fixes or removing an unused feature [scsi_sdb_cache])" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (307 commits) scsi: scsi_transport_srp: Sanitize scsi_target_block/unblock sequences scsi: ufs-mediatek: Apply DELAY_AFTER_LPM quirk to Micron devices scsi: ufs: Introduce device quirk "DELAY_AFTER_LPM" scsi: virtio-scsi: Correctly handle the case where all LUNs are unplugged scsi: scsi_debug: Implement tur_ms_to_ready parameter scsi: scsi_debug: Fix request sense scsi: lpfc: Fix typo in comment for ULP scsi: ufs-mediatek: Prevent LPM operation on undeclared VCC scsi: iscsi: Do not put host in iscsi_set_flashnode_param() scsi: hpsa: Correct ctrl queue depth scsi: target: tcmu: Make TMR notification optional scsi: target: tcmu: Implement tmr_notify callback scsi: target: tcmu: Fix and simplify timeout handling scsi: target: tcmu: Factor out new helper ring_insert_padding scsi: target: tcmu: Do not queue aborted commands scsi: target: tcmu: Use priv pointer in se_cmd scsi: target: Add tmr_notify backend function scsi: target: Modify core_tmr_abort_task() scsi: target: iscsi: Fix inconsistent debug message scsi: target: iscsi: Fix login error when receiving ...
2020-07-24scsi: mvsas: Move 'core_nr' inside #ifdef and remove unused variable 'res_flag'Lee Jones
Only declare 'core_nr' if its conditions for use are met. Fixes the following W=1 kernel build warning(s): drivers/scsi/mvsas/mv_init.c: In function ‘mvs_interrupt’: drivers/scsi/mvsas/mv_init.c:180:6: warning: variable ‘core_nr’ set but not used [-Wunused-but-set-variable] drivers/scsi/mvsas/mv_init.c: In function ‘mvs_ioremap’: drivers/scsi/mvsas/mv_init.c:302:36: warning: variable ‘res_flag’ set but not used [-Wunused-but-set-variable] [mkp: applied follow-up fixup patch] Link: https://lore.kernel.org/r/20200721164148.2617584-40-lee.jones@linaro.org Cc: Jason Yan <yanaijie@huawei.com> Cc: Marvell <kewei@marvell.com> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-15scsi: Wire up ata_scsi_dma_need_drain for SAS HBA driversChristoph Hellwig
We need ata_scsi_dma_need_drain for all drivers wired up to drive ATAPI devices through libata. That also includes the SAS HBA drivers in addition to native libata HBA drivers. Link: https://lore.kernel.org/r/20200615064624.37317-3-hch@lst.de Fixes: cc97923a5bcc ("block: move dma drain handling to scsi") Reported-by: Michael Ellerman <mpe@ellerman.id.au> Tested-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com> Acked-by: John Garry <john.garry@huawei.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-17scsi: mvsas: remove unused symbol 'mvs_th'Jason Yan
This symbol has no users so remove it. Link: https://lore.kernel.org/r/20200415085053.7633-1-yanaijie@huawei.com Signed-off-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-17scsi: mvsas: make mvst_host_attrs staticJason Yan
Fix the following sparse warning: drivers/scsi/mvsas/mv_init.c:28:25: warning: symbol 'mvst_host_attrs' was not declared. Should it be static? Link: https://lore.kernel.org/r/20200415085044.7460-1-yanaijie@huawei.com Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-11scsi: Replace zero-length array with flexible-array memberGustavo A. R. Silva
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Link: https://lore.kernel.org/r/20200224161406.GA21454@embeddedor Reviewed-by: Lee Duncan <lduncan@suse.com> Reviewed-by: Satish Kharat <satishkh@cisco.com> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
generated by cgit (git 2.34.1) at 2025-06-13 07:16:16 +0000