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linux/drivers/scsi
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Shai Malin 9757f8af04 scsi: qedi: Add support for fastpath doorbell recovery 
Driver fastpath employs doorbells to indicate to the device that work is
available. Each doorbell translates to a message sent to the device over
PCI. These messages are queued by the doorbell queue HW block, and handled
by the HW.

If a sufficient amount of CPU cores are sending messages at a sufficient
rate, the queue can overflow, and messages can be dropped. There are many
entities in the driver which can send doorbell messages.  When overflow
happens, a fatal HW attention is indicated, and the Doorbell HW block stops
accepting new doorbell messages until recovery procedure is done.

When overflow occurs, all doorbells are dropped. Since doorbells are
aggregatives, if more doorbells are sent nothing has to be done.  But if
the "last" doorbell is dropped, the doorbelling entity doesn’t know this
happened, and may wait forever for the device to perform the action.  The
doorbell recovery mechanism addresses just that - it sends the last
doorbell of every entity.

[mkp: fix missing brackets reported by Guenter Roeck]

Link: https://lore.kernel.org/r/20210804221412.5048-1-smalin@marvell.com
Co-developed-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-11 22:44:36 -04:00
..
aacraid scsi: aacraid: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:38 -04:00
aic7xxx SCSI misc on 20210711 2021-07-11 10:59:53 -07:00
aic94xx SCSI misc on 20210711 2021-07-11 10:59:53 -07:00
arcmsr scsi: arcmsr: Avoid over-read of sense buffer 2021-06-18 23:26:33 -04:00
arm scsi: fas216: Fix a build error 2021-07-12 21:41:31 -04:00
be2iscsi scsi: be2iscsi: Fix use-after-free during IP updates 2021-07-18 21:19:14 -04:00
bfa scsi: bfa: Fix inconsistent indenting 2021-05-21 17:01:18 -04:00
bnx2fc SCSI misc on 20210711 2021-07-11 10:59:53 -07:00
bnx2i scsi: bnx2i: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:38 -04:00
csiostor scsi: csiostor: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:38 -04:00
cxgbi scsi: iscsi: Fix shost->max_id use 2021-06-02 01:28:21 -04:00
cxlflash scsi: cxlflash: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:38 -04:00
device_handler scsi: scsi_dh_rdac: Avoid crash during rdac_bus_attach() 2021-07-29 21:58:35 -04:00
dpt
elx scsi: elx: efct: Remove redundant initialization of variable 'ret' 2021-08-09 23:41:19 -04:00
esas2r Merge branch '5.14/scsi-result' into 5.14/scsi-staging 2021-06-02 01:37:04 -04:00
fcoe scsi: fcoe: Statically initialize flogi_maddr 2021-06-07 21:30:09 -04:00
fnic scsi: fnic: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:39 -04:00
hisi_sas scsi: hisi_sas: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:39 -04:00
ibmvscsi Merge branch '5.14/scsi-fixes' into 5.15/scsi-staging 2021-08-11 22:37:22 -04:00
ibmvscsi_tgt scsi/ibmvscsi: Directly include linux/{of.h,irqdomain.h} 2021-06-10 13:09:16 +01:00
isci scsi: isci: Use the proper SCSI midlayer interfaces for PI 2021-08-11 22:25:43 -04:00
libfc scsi: libfc: Fix array index out of bound exception 2021-06-28 22:31:16 -04:00
libsas scsi: libsas: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:39 -04:00
lpfc scsi: lpfc: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:39 -04:00
megaraid Merge branch '5.14/scsi-fixes' into 5.15/scsi-staging 2021-08-11 22:37:22 -04:00
mpi3mr scsi: mpi3mr: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:40 -04:00
mpt3sas Merge branch '5.14/scsi-fixes' into 5.15/scsi-staging 2021-08-11 22:37:22 -04:00
mvsas scsi: mvsas: Use DEVICE_ATTR_RO()/RW() macro 2021-06-22 23:00:02 -04:00
pcmcia scsi: fdomain: Fix error return code in fdomain_probe() 2021-08-09 23:30:25 -04:00
pm8001 Merge branch '5.14/scsi-fixes' into 5.15/scsi-staging 2021-08-11 22:37:22 -04:00
qedf scsi: qedf: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:40 -04:00
qedi scsi: qedi: Add support for fastpath doorbell recovery 2021-08-11 22:44:36 -04:00
qla2xxx scsi: qla2xxx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:41 -04:00
qla4xxx scsi: qla4xxx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:41 -04:00
smartpqi scsi: smartpqi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:41 -04:00
snic scsi: snic: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:41 -04:00
sym53c8xx_2 scsi: sym53c8xx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:42 -04:00
ufs scsi: ufs: ufshpb: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:42 -04:00
.gitignore
3w-9xxx.c scsi: core: Drop obsolete Linux-specific SCSI status codes 2021-05-31 23:59:18 -04:00
3w-9xxx.h scsi: 3w-9xxx: Fix endianness issues in command packets 2021-05-15 18:01:34 -04:00
3w-sas.c scsi: 3w-sas: Remove unneeded variable 'retval' 2021-03-18 22:18:09 -04:00
3w-sas.h scsi: 3w-sas: Whitespace cleanup 2021-01-22 21:14:08 -05:00
3w-xxxx.c scsi: core: Drop obsolete Linux-specific SCSI status codes 2021-05-31 23:59:18 -04:00
3w-xxxx.h scsi: 3w-xxxx: Whitespace cleanup 2021-01-22 21:14:07 -05:00
53c700.c scsi: 53c700: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:38 -04:00
53c700.h treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
53c700.scr
53c700_d.h_shipped
a100u2w.c scsi: a100u2w: Remove unused variable biosaddr 2021-03-29 23:33:06 -04:00
a100u2w.h
a2091.c
a2091.h
a3000.c
a3000.h
a4000t.c
advansys.c scsi: advansys: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:38 -04:00
aha152x.c scsi: aha152x: Do not set message byte when calling scsi_done() 2021-05-31 22:48:23 -04:00
aha152x.h
aha1542.c scsi: aha1542: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:38 -04:00
aha1542.h scsi: aha1542: Clarify 'struct ccb' comments 2021-01-13 00:14:07 -05:00
aha1740.c scsi: aha1740: Avoid over-read of sense buffer 2021-06-18 23:27:04 -04:00
aha1740.h
am53c974.c
atari_scsi.c scsi: atari_scsi: Fix race condition between .queuecommand and EH 2020-11-23 22:12:09 -05:00
atp870u.c scsi: atp870u: Fix naming and demote incorrect and non-conformant kernel-doc header 2021-03-15 22:29:00 -04:00
atp870u.h scsi: atp870u: Whitespace cleanup 2021-01-22 21:14:08 -05:00
BusLogic.c scsi: BusLogic: Use %X for u32 sized integer rather than %lX 2021-08-01 13:27:46 -04:00
BusLogic.h scsi: BusLogic: Fix 64-bit system enumeration error for Buslogic 2021-05-14 22:19:04 -04:00
bvme6000_scsi.c
ch.c scsi: scsi_ioctl: Call scsi_cmd_ioctl() from scsi_ioctl() 2021-07-28 22:24:25 -04:00
constants.c scsi: core: Introduce enums for the SAM and host status codes 2021-06-02 23:09:39 -04:00
dc395x.c scsi: dc395: Translate message bytes 2021-05-31 22:48:22 -04:00
dc395x.h scsi: dc395x: Drop internal SCSI message definitions 2021-01-22 21:14:10 -05:00
dmx3191d.c
dpt_i2o.c scsi: dpt_i2o: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:38 -04:00
dpti.h
esp_scsi.c scsi: core: Kill DRIVER_SENSE 2021-05-31 22:48:21 -04:00
esp_scsi.h
fdomain.c scsi: fdomain: Translate message to host byte status 2021-05-31 22:48:24 -04:00
fdomain.h
fdomain_isa.c isa: Make the remove callback for isa drivers return void 2021-01-26 07:42:27 +01:00
fdomain_pci.c
FlashPoint.c Merge branch '5.14/scsi-result' into 5.14/scsi-staging 2021-06-02 01:37:04 -04:00
g_NCR5380.c isa: Make the remove callback for isa drivers return void 2021-01-26 07:42:27 +01:00
gvp11.c
gvp11.h
hosts.c scsi: core: Fix bad pointer dereference when ehandler kthread is invalid 2021-07-12 21:46:24 -04:00
hpsa.c scsi: hpsa: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:39 -04:00
hpsa.h scsi: hpsa: Update copyright 2020-09-02 22:49:06 -04:00
hpsa_cmd.h scsi: hpsa: Add an assert to prevent __packed reintroduction 2021-04-01 22:52:40 -04:00
hptiop.c scsi: core: Do not use DRIVER_INVALID 2021-05-31 22:48:21 -04:00
hptiop.h
imm.c scsi: imm: Switch to use module_parport_driver() 2021-06-18 23:01:03 -04:00
imm.h
initio.c scsi: initio: Fix a few kernel-doc misdemeanours 2021-03-18 23:35:55 -04:00
initio.h scsi: initio: Drop internal SCSI message definition 2021-01-22 21:14:10 -05:00
ipr.c scsi: ipr: System crashes when seeing type 20 error 2021-06-29 16:46:08 -04:00
ipr.h scsi: ipr: System crashes when seeing type 20 error 2021-06-29 16:46:08 -04:00
ips.c scsi: ips: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:39 -04:00
ips.h treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
iscsi_boot_sysfs.c
iscsi_tcp.c scsi: iscsi: iscsi_tcp: Start socket shutdown during conn stop 2021-06-02 01:28:20 -04:00
iscsi_tcp.h
jazz_esp.c scsi: jazz_esp: Add IRQ check 2021-04-13 00:20:48 -04:00
Kconfig scsi: core: Rename CONFIG_BLK_SCSI_REQUEST to CONFIG_SCSI_COMMON 2021-07-28 22:24:27 -04:00
lasi700.c treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
libiscsi.c Merge branch '5.14/scsi-result' into 5.14/scsi-staging 2021-06-02 01:37:04 -04:00
libiscsi_tcp.c scsi: libiscsi: Drop taskqueuelock 2021-02-08 22:39:03 -05:00
mac53c94.c scsi: mac53c94: Fix warning comparing pointer to 0 2021-03-24 22:16:12 -04:00
mac53c94.h
mac_esp.c scsi: mac_esp: Use module_platform_driver to simplify the code 2020-10-02 21:52:53 -04:00
mac_scsi.c scsi: NCR5380: Remove context check 2020-12-07 20:24:09 -05:00
Makefile scsi: core: Rename CONFIG_BLK_SCSI_REQUEST to CONFIG_SCSI_COMMON 2021-07-28 22:24:27 -04:00
megaraid.c scsi: core: Drop obsolete Linux-specific SCSI status codes 2021-05-31 23:59:18 -04:00
megaraid.h
mesh.c scsi: mesh: Translate message to host byte status 2021-05-31 22:48:23 -04:00
mesh.h
mvme16x_scsi.c
mvme147.c
mvme147.h
mvumi.c scsi: mvumi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:40 -04:00
mvumi.h
myrb.c scsi: myrb: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:40 -04:00
myrb.h
myrs.c scsi: myrs: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:40 -04:00
myrs.h
ncr53c8xx.c scsi: ncr53c8xx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:40 -04:00
ncr53c8xx.h scsi: ncr53c8xx: Use SAM status values 2021-01-22 21:14:12 -05:00
NCR5380.c scsi: NCR5380: Use sc_data_direction instead of rq_data_dir() 2021-08-11 22:25:38 -04:00
NCR5380.h scsi: NCR5380: Remove context check 2020-12-07 20:24:09 -05:00
nsp32.c scsi: nsp32: Do not set message byte 2021-05-31 22:48:23 -04:00
nsp32.h
nsp32_debug.c
nsp32_io.h
pmcraid.c scsi: pmcraid: Correct function name pmcraid_show_adapter_id() in header 2021-03-18 23:35:55 -04:00
pmcraid.h scsi: pmcraid: Fix typos 2021-05-21 16:59:33 -04:00
ppa.c scsi: ppa: Switch to use module_parport_driver() 2021-06-18 23:01:03 -04:00
ppa.h
ps3rom.c scsi: core: Introduce scsi_build_sense() 2021-05-31 22:48:21 -04:00
qla1280.c scsi: qla1280: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:41 -04:00
qla1280.h
qlogicfas.c
qlogicfas408.c scsi: qlogicfas408: Whitespace cleanup 2021-05-31 22:48:23 -04:00
qlogicfas408.h
qlogicpti.c scsi: qlogicpti: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:41 -04:00
qlogicpti.h
raid_class.c
script_asm.pl
scsi.c scsi: core: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:37 -04:00
scsi.h
scsi_bsg.c scsi: bsg: Fix commands without data transfer in scsi_bsg_sg_io_fn() 2021-08-01 13:21:40 -04:00
scsi_common.c scsi: core: Rename CONFIG_BLK_SCSI_REQUEST to CONFIG_SCSI_COMMON 2021-07-28 22:24:27 -04:00
scsi_debug.c scsi: scsi_debug: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:41 -04:00
scsi_debugfs.c scsi: remove the unchecked_isa_dma flag 2021-04-06 09:28:17 -06:00
scsi_debugfs.h
scsi_devinfo.c scsi: core: Add BLIST_IGN_MEDIA_CHANGE for Ultra HS-SD/MMC USB card readers 2021-07-21 23:49:02 -04:00
scsi_dh.c scsi: scsi_dh: Fix a typo 2021-03-24 23:03:43 -04:00
scsi_error.c scsi: core: Remove the request member from struct scsi_cmnd 2021-08-11 22:25:42 -04:00
scsi_ioctl.c scsi: block: Remove the remaining SG_IO-related fields from struct request_queue 2021-07-30 22:22:36 -04:00
scsi_lib.c scsi: core: Remove the request member from struct scsi_cmnd 2021-08-11 22:25:42 -04:00
scsi_lib_dma.c
scsi_logging.c scsi: core: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:37 -04:00
scsi_logging.h
scsi_netlink.c
scsi_pm.c scsi: block: pm: Simplify resume handling 2020-07-24 22:09:55 -04:00
scsi_priv.h scsi: bsg: Simplify device registration 2021-07-30 22:22:36 -04:00
scsi_proc.c
scsi_sas_internal.h
scsi_scan.c Merge branch '5.14/scsi-fixes' into 5.15/scsi-staging 2021-08-11 22:37:22 -04:00
scsi_sysctl.c
scsi_sysfs.c Merge branch '5.14/scsi-fixes' into 5.15/scsi-staging 2021-08-11 22:37:22 -04:00
scsi_trace.c
scsi_transport_api.h
scsi_transport_fc.c scsi: scsi_transport_fc: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:37 -04:00
scsi_transport_iscsi.c scsi: iscsi: Fix iface sysfs attr detection 2021-07-18 21:07:48 -04:00
scsi_transport_sas.c scsi: core: Fixup calling convention for scsi_mode_sense() 2021-05-31 22:48:20 -04:00
scsi_transport_spi.c scsi: scsi_transport_spi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:37 -04:00
scsi_transport_srp.c scsi: scsi_transport_srp: Don't block target in SRP_PORT_LOST state 2021-04-05 23:14:53 -04:00
scsicam.c include: remove pagemap.h from blkdev.h 2021-05-06 19:24:11 -07:00
sd.c scsi: sd: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:37 -04:00
sd.h SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
sd_dif.c
sd_zbc.c scsi: sd: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:37 -04:00
sense_codes.h scsi: core: Update additional sense codes list 2020-09-15 20:28:06 -04:00
ses.c
sg.c scsi: scsi_ioctl: Unexport sg_scsi_ioctl() 2021-07-28 22:24:28 -04:00
sgiwd93.c sgiwd93: convert to dma_alloc_noncoherent 2020-09-25 06:20:44 +02:00
sim710.c scsi: sim710: Remove unused variable 'err' from sim710_init() 2021-03-18 22:52:29 -04:00
sni_53c710.c treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
sr.c Merge branch '5.14/scsi-fixes' into 5.15/scsi-staging 2021-08-11 22:37:22 -04:00
sr.h
sr_ioctl.c scsi: core: Drop obsolete Linux-specific SCSI status codes 2021-05-31 23:59:18 -04:00
sr_vendor.c
st.c scsi: scsi_ioctl: Call scsi_cmd_ioctl() from scsi_ioctl() 2021-07-28 22:24:25 -04:00
st.h scsi: remove the unchecked_isa_dma flag 2021-04-06 09:28:17 -06:00
st_options.h
stex.c scsi: stex: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:41 -04:00
storvsc_drv.c scsi: storvsc: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:42 -04:00
sun3_scsi.c scsi: sun3_scsi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:41 -04:00
sun3_scsi_vme.c
sun3x_esp.c scsi: sun3x_esp: Add IRQ check 2021-04-13 00:20:48 -04:00
sun_esp.c scsi: sun_esp: Use module_platform_driver to simplify the code 2020-10-02 21:52:55 -04:00
virtio_scsi.c scsi: virtio_scsi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:42 -04:00
vmw_pvscsi.c SCSI misc on 20210702 2021-07-02 15:14:36 -07:00
vmw_pvscsi.h scsi: vmw_pvscsi: MAINTAINERS: Update maintainer 2021-03-04 17:21:25 -05:00
wd33c93.c scsi: wd33c93: Translate message byte to host byte 2021-05-31 22:48:23 -04:00
wd33c93.h
wd719x.c
wd719x.h
xen-scsifront.c scsi: xen-scsifront: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 2021-08-11 22:25:42 -04:00
zalon.c
zorro7xx.c
zorro_esp.c