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d0fc91d67c
linux/drivers/scsi
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Kashyap Desai d0fc91d67c scsi: megaraid_sas: Send SYNCHRONIZE_CACHE for VD to firmware 
Until now the megaraid_sas driver has reported successful completion on
SYNCHRONIZE_CACHE commands without sending them down to the controller.
The controller firmware has been responsible for taking care of flushing
disk caches for all drives that belong to a Virtual Disk at the time of
system reboot/shutdown.

There may have been a reason to avoid sending SYNCHRONIZE_CACHE to a VD
in the past but that no longer appears to be valid.

Older versions of MegaRaid firmware (Gen2 and Gen2.5) set the WCE bit
for Virtual Disks but the firmware does not report correct completion
status for a SYNCHRONIZE_CACHE command. As a result, we must use another
method to identify whether it is safe to send the command to the
controller. We use the canHandleSyncCache firmware flag in the scratch
pad register at offset 0xB4.

New SYNCHRONIZE_CACHE behavior:

IF 'JBOD'

	Driver sends SYNCHRONIZE_CACHE command to the firmware
	Firmware sends SYNCHRONIZE_CACHE to drive
	Firmware obtains status from drive and returns same status back to driver

ELSEIF 'VirtualDisk'

	IF firmware supports new API bit called canHandleSyncCache
		Driver sends SYNCHRONIZE_CACHE command to the firmware
		Firmware does not send SYNCHRONIZE_CACHE to drives
		Firmware returns SUCCESS
	ELSE
		Driver does not send SYNCHRONIZE_CACHE command to the firmware
		Driver return SUCCESS for that command
	ENDIF
ENDIF

[mkp: edited patch description]

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-11-08 17:39:35 -05:00
..
aacraid SCSI misc on 20161006 2016-10-07 09:28:53 -07:00
aic7xxx aic7xxx: Fix queue depth handling 2016-02-23 21:27:02 -05:00
aic94xx scsi: aic94xx: Add missing error code assignment before test 2016-08-25 23:39:25 -04:00
arcmsr scsi: arcmsr: Use pci_alloc_irq_vectors 2016-11-08 17:29:46 -05:00
arm scsi: ncr5380: Use correct types for DMA routines 2016-11-08 17:29:48 -05:00
be2iscsi Merge remote-tracking branch 'mkp-scsi/4.9/scsi-fixes' into fixes 2016-10-21 12:40:02 -04:00
bfa scsi: bfa: Do not dereference port before it is null checked 2016-09-02 06:09:16 -04:00
bnx2fc scsi: libfc: Remove fc_rport_init() 2016-11-08 17:29:56 -05:00
bnx2i bnx2i: fix spelling mistake "complection" -> "completion" 2016-07-12 23:16:31 -04:00
csiostor scsi: csiostor: Fix completion usage 2016-09-14 13:19:15 -04:00
cxgbi SCSI misc on 20161014 2016-10-14 11:37:50 -07:00
cxlflash scsi: cxlflash: Fix context reference tracking on detach 2016-09-14 12:47:42 -04:00
device_handler scsi: scsi_dh_alua: Fix memory leak in alua_rtpg() 2016-09-26 20:42:38 -04:00
dpt
esas2r scsi: esas2r: don't reinitialize adapter's req_table 2016-08-25 22:28:17 -04:00
fcoe scsi: libfc: Remove fc_rport_init() 2016-11-08 17:29:56 -05:00
fnic scsi: fnic: use kernel's '%pM' format option to print MAC 2016-11-08 17:29:57 -05:00
hisi_sas scsi: hisi_sas: Add v2 hw support for different refclk 2016-11-08 17:29:46 -05:00
ibmvscsi scsi: ibmvfc: Fix I/O hang when port is not mapped 2016-09-19 19:50:33 -04:00
ibmvscsi_tgt scsi: ibmvscsis: Issues from Dan Carpenter/Smatch 2016-11-08 17:29:54 -05:00
isci Merge branch 'for-4.7-zac' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2016-05-23 17:53:39 -07:00
libfc scsi: libfc: Don't have fc_exch_find log errors on a new exchange 2016-11-08 17:29:58 -05:00
libsas SCSI misc on 20160727 2016-07-27 14:48:37 -07:00
lpfc scsi: lpfc: Use %zd format string for size_t 2016-11-08 17:29:53 -05:00
megaraid scsi: megaraid_sas: Send SYNCHRONIZE_CACHE for VD to firmware 2016-11-08 17:39:35 -05:00
mpt3sas scsi: mpt3sas: Bump driver version as "14.101.00.00" 2016-11-08 17:30:00 -05:00
mvsas scsi: mvsas: Mark symbols static where possible 2016-09-26 21:15:55 -04:00
osd scsi/osd: open code blk_make_request 2016-07-20 17:38:35 -06:00
pcmcia scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
pm8001 scsi: pm8001: Mark symbols static where possible 2016-09-26 21:10:45 -04:00
qla2xxx scsi: qla2xxx: Use struct t10_pi_tuple 2016-09-15 09:41:56 -04:00
qla4xxx scsi: qla4xxx: print MAC and SID via %p[mM][R] 2016-11-08 17:29:57 -05:00
smartpqi scsi: smartpqi: switch to pci_alloc_irq_vectors 2016-11-08 17:30:00 -05:00
snic snic: Fix use-after-free in case of a dma mapping error 2016-07-12 23:16:31 -04:00
sym53c8xx_2 scsi: sym53c8xx_2: Use complete() instead complete_all() 2016-09-14 13:19:29 -04:00
ufs scsi: ufs: change device rails hpm mode ramp up sequence 2016-11-08 17:30:00 -05:00
.gitignore
3w-9xxx.c 3w-9xxx: don't unmap bounce buffered commands 2015-10-07 10:24:48 -07:00
3w-9xxx.h 3w-9xxx: fix command completion race 2015-04-27 10:10:19 -07:00
3w-sas.c 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-sas.h 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-xxxx.c 3w-xxxx: Pass through compat mode ioctls 2016-01-08 12:51:03 -05:00
3w-xxxx.h 3w-xxxx: fix command completion race 2015-04-27 10:05:55 -07:00
53c700_d.h_shipped
53c700.c scsi: remove current_cmnd field from struct scsi_device 2016-07-13 22:33:23 -04:00
53c700.h scsi: remove current_cmnd field from struct scsi_device 2016-07-13 22:33:23 -04:00
53c700.scr
a100u2w.c scsi: a100u2w: trivial typo in printk 2015-08-07 15:03:42 +02:00
a100u2w.h
a2091.c
a2091.h
a3000.c
a3000.h
a4000t.c
advansys.c scsi: advansys: fix build warning for PCI=n 2016-11-08 17:29:58 -05:00
aha152x.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha152x.h
aha1542.c scsi: aha1542: avoid uninitialized variable warnings 2016-02-23 21:27:02 -05:00
aha1542.h aha1542: fix include guard and remove useless changelog 2015-04-09 18:08:31 -07:00
aha1740.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha1740.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
am53c974.c am53c974: Fix crash during modprobe 2015-04-17 10:13:56 -07:00
atari_scsi.c scsi: ncr5380: Use correct types for DMA routines 2016-11-08 17:29:48 -05:00
atp870u.c atp870u: Introduce atp870_init() 2015-11-25 22:08:55 -05:00
atp870u.h atp870u: Remove scam_on from struct atp_unit 2015-11-25 22:08:52 -05:00
BusLogic.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
BusLogic.h
bvme6000_scsi.c
ch.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
constants.c scsi: fix upper bounds check of sense key in scsi_sense_key_string() 2016-08-16 00:49:32 -04:00
dc395x.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
dc395x.h
dmx3191d.c scsi: ncr5380: Use correct types for DMA routines 2016-11-08 17:29:48 -05:00
dpt_i2o.c dpt_i2o: fix build warning 2016-02-23 21:27:02 -05:00
dpti.h
eata_generic.h
eata_pio.c eata_pio: missing break statement 2016-05-10 22:01:07 -04:00
eata_pio.h
eata.c
esp_scsi.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
esp_scsi.h
fdomain.c scsi: fdomain: drop fdomain_pci_tbl when built-in 2016-02-23 21:27:02 -05:00
fdomain.h
FlashPoint.c FlashPoint: fix build warning 2015-11-09 16:32:14 -08:00
g_NCR5380.c scsi: ncr5380: Use correct types for DMA routines 2016-11-08 17:29:48 -05:00
g_NCR5380.h scsi: ncr5380: Use correct types for DMA routines 2016-11-08 17:29:48 -05:00
gdth_ioctl.h
gdth_proc.c gdth: replace struct timeval with ktime_get_real_seconds() 2016-02-25 21:16:49 -05:00
gdth_proc.h
gdth.c gdth: replace struct timeval with ktime_get_real_seconds() 2016-02-25 21:16:49 -05:00
gdth.h
gvp11.c
gvp11.h
hosts.c SCSI misc on 20161006 2016-10-07 09:28:53 -07:00
hpsa_cmd.h scsi: hpsa: Check for vpd support before sending 2016-09-14 14:19:31 -04:00
hpsa.c scsi: hpsa: Remove unneeded void pointer cast 2016-11-08 17:29:48 -05:00
hpsa.h scsi: hpsa: correct call to hpsa_do_reset 2016-09-21 16:42:05 -04:00
hptiop.c hptiop: Support HighPoint RR36xx HBAs and Support SAS tape and SAS media changer 2015-08-12 13:14:57 -07:00
hptiop.h hptiop: Support HighPoint RR36xx HBAs and Support SAS tape and SAS media changer 2015-08-12 13:14:57 -07:00
imm.c imm: check parport_claim 2016-02-25 21:10:53 -05:00
imm.h
initio.c SCSI: initio: remove duplicate module device table 2015-11-20 11:39:03 -05:00
initio.h
ipr.c scsi: ipr: Use pci_irq_allocate_vectors 2016-11-08 17:29:46 -05:00
ipr.h scsi: ipr: Use pci_irq_allocate_vectors 2016-11-08 17:29:46 -05:00
ips.c scsi: ips: don't use custom hex_asc_upper[] table 2016-11-08 17:29:57 -05:00
ips.h
iscsi_boot_sysfs.c ibft: Expose iBFT acpi header via sysfs 2016-05-16 11:14:29 -04:00
iscsi_tcp.c scsi_tcp: block BH in TCP callbacks 2016-05-19 11:36:49 -07:00
iscsi_tcp.h iscsi_tcp: Use ahash 2016-01-27 20:36:10 +08:00
jazz_esp.c
Kconfig scsi: g_NCR5380: add HAS_IOPORT_MAP dependency 2016-11-08 17:29:54 -05:00
lasi700.c
libiscsi_tcp.c iscsi_tcp: Use ahash 2016-01-27 20:36:10 +08:00
libiscsi.c scsi: libiscsi: Fix locking in __iscsi_conn_send_pdu 2016-10-17 13:34:44 -04:00
mac53c94.c PCI: Remove includes of asm/pci-bridge.h 2016-02-05 16:29:28 -06:00
mac53c94.h
mac_esp.c
mac_scsi.c scsi: ncr5380: Use correct types for DMA routines 2016-11-08 17:29:48 -05:00
Makefile scsi: g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio drivers 2016-11-08 17:29:47 -05:00
megaraid.c megaraid : use dev_printk when possible 2015-08-26 07:23:04 -07:00
megaraid.h
mesh.c PCI: Remove includes of asm/pci-bridge.h 2016-02-05 16:29:28 -06:00
mesh.h
mvme16x_scsi.c
mvme147.c
mvme147.h
mvumi.c scsi: mvumi: use __maybe_unused to hide pm functions 2016-03-05 17:07:46 -05:00
mvumi.h
ncr53c8xx.c
ncr53c8xx.h
NCR53c406a.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
NCR5380.c scsi: ncr5380: Suppress unhelpful "interrupt without IRQ bit" message 2016-11-08 17:29:48 -05:00
NCR5380.h scsi: ncr5380: Use correct types for DMA routines 2016-11-08 17:29:48 -05:00
NCR_D700.c
NCR_D700.h
NCR_Q720.c
NCR_Q720.h
nsp32_debug.c
nsp32_io.h
nsp32.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
nsp32.h
osst_detect.h
osst_options.h
osst.c
osst.h
pmcraid.c scsi: pmcraid: mark symbols static where possible 2016-09-04 01:28:07 -04:00
pmcraid.h
ppa.c scsi: ppa: use new parport device model 2016-02-23 21:27:02 -05:00
ppa.h
ps3rom.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qla1280.c qla1280: Don't allocate 512kb of host tags 2016-04-30 09:25:26 -07:00
qla1280.h
qlogicfas408.c
qlogicfas408.h
qlogicfas.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qlogicpti.c qlogicpti: Return correct error code 2016-03-01 20:06:49 -05:00
qlogicpti.h
raid_class.c
script_asm.pl
scsi_common.c scsi: add scsi_set_sense_field_pointer() 2016-04-04 12:07:42 -04:00
scsi_debug.c scsi: scsi_debug: Fix memory leak if LBP enabled and module is unloaded 2016-10-26 22:14:50 -04:00
scsi_devinfo.c scsi: blacklist all RDAC devices for BLIST_NO_ULD_ATTACH 2016-08-16 00:58:13 -04:00
scsi_dh.c scsi: Replace wrong device handler name for CLARiiON arrays 2016-10-11 17:56:51 -04:00
scsi_error.c Merge remote-tracking branch 'mkp-scsi/4.7/scsi-fixes' into fixes 2016-06-18 11:59:01 -07:00
scsi_ioctl.c
scsi_lib_dma.c
scsi_lib.c scsi: allow LLDDs to expose the queue mapping to blk-mq 2016-11-08 17:30:00 -05:00
scsi_logging.c scsi_logging: return void for dev_printk() functions 2015-02-04 08:00:24 -08:00
scsi_logging.h
scsi_module.c
scsi_netlink.c
scsi_pm.c scsi: Set request queue runtime PM status back to active on resume 2016-02-19 10:52:45 -05:00
scsi_priv.h SCSI misc on 20161006 2016-10-07 09:28:53 -07:00
scsi_proc.c scsi: disable automatic target scan 2016-04-11 16:57:09 -04:00
scsi_sas_internal.h scsi_transport_sas: add 'scsi_target_id' sysfs attribute 2016-03-14 21:05:04 -04:00
scsi_scan.c scsi: Remove one useless stack variable 2016-10-11 18:02:09 -04:00
scsi_sysctl.c
scsi_sysfs.c Revert "scsi: fix soft lockup in scsi_remove_target() on module removal" 2016-04-15 16:53:07 -04:00
scsi_trace.c scsi-trace: define ZBC_IN and ZBC_OUT 2016-04-11 16:57:09 -04:00
scsi_transport_api.h
scsi_transport_fc.c scsi: scsi_transport_fc: rename 'fc_rport_create' to 'fc_remote_port_create' 2016-11-08 17:29:55 -05:00
scsi_transport_iscsi.c scsi_transport_iscsi: Declare local symbols static 2016-04-11 16:57:09 -04:00
scsi_transport_sas.c scsi: sas: remove is_sas_attached() 2016-08-18 22:23:20 -04:00
scsi_transport_spi.c [SCSI] Fix printk typos in drivers/scsi 2015-08-07 14:28:45 +02:00
scsi_transport_srp.c scsi: replace custom approach to hexdump small buffers 2016-11-08 17:29:57 -05:00
scsi_typedefs.h
scsi.c scsi: Avoid that toggling use_blk_mq triggers a memory leak 2016-09-26 20:58:42 -04:00
scsi.h
scsicam.c
sd_dif.c scsi: sd: Move DIF protection types to t10-pi.h 2016-09-15 09:51:14 -04:00
sd.c scsi: replace custom approach to hexdump small buffers 2016-11-08 17:29:57 -05:00
sd.h scsi: sd: Move DIF protection types to t10-pi.h 2016-09-15 09:51:14 -04:00
sense_codes.h scsi: move Additional Sense Codes to separate file 2016-04-11 16:57:09 -04:00
ses.c scsi: ses: use scsi_is_sas_rphy instead of is_sas_attached 2016-08-18 22:22:19 -04:00
sg.c scsi: sg: Use mult_frac, drop MULDIV macro 2016-08-30 22:18:59 -04:00
sgiwd93.c
sim710.c scsi: sim710: fix build warning 2016-02-23 21:27:02 -05:00
sni_53c710.c
sr_ioctl.c sr: reduce debug noise in sr_do_ioctl 2015-01-20 19:43:24 +01:00
sr_vendor.c
sr.c scsi: sr: constify sr_pm_ops structure 2016-09-04 01:28:08 -04:00
sr.h
st_options.h
st.c mm: replace get_user_pages_unlocked() write/force parameters with gup_flags 2016-10-18 14:13:37 -07:00
st.h st: Remove obsolete scsi_tape.max_pfn 2015-11-18 11:59:09 -05:00
stex.c stex: Add S3/S4 support 2016-02-23 21:27:02 -05:00
storvsc_drv.c scsi: storvsc: Filter out storvsc messages CD-ROM medium not present 2016-07-12 23:16:31 -04:00
sun3_scsi_vme.c
sun3_scsi.c scsi: ncr5380: Use correct types for DMA routines 2016-11-08 17:29:48 -05:00
sun3_scsi.h
sun3x_esp.c arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead 2015-08-10 23:07:05 -04:00
sun_esp.c
sym53c416.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
sym53c416.h
virtio_scsi.c SCSI misc on 20161006 2016-10-07 09:28:53 -07:00
vmw_pvscsi.c vmw_pvscsi: Change to update maintainer details (name, email) 2016-07-12 23:16:31 -04:00
vmw_pvscsi.h vmw_pvscsi: Change to update maintainer details (name, email) 2016-07-12 23:16:31 -04:00
wd33c93.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
wd33c93.h
wd719x.c drivers/scsi/wd719x.c: remove last declaration using DEFINE_PCI_DEVICE_TABLE 2016-09-01 17:52:01 -07:00
wd719x.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
xen-scsifront.c xen: Use correctly the Xen memory terminologies 2015-09-08 18:03:49 +01:00
zalon.c
zorro7xx.c