linux/drivers/scsi/megaraid
Shivasharan S 78409d4b47 scsi: megaraid_sas: Block PCI config space access from userspace during OCR
While an online controller reset(OCR) is in progress, there is short
duration where all access to controller's PCI config space from the host
needs to be blocked.  This is due to a hardware limitation of MegaRAID
controllers.

With this patch, driver will block all access to controller's config space
from userland applications by calling pci_cfg_access_lock() while OCR is in
progress and unlocking after controller comes back to ready state.

Added helper function which locks the config space before initiating OCR
and wait for controller to become READY.

Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-06-18 19:46:19 -04:00
..
Kconfig.megaraid
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mbox_defs.h
mega_common.h
megaraid_ioctl.h scsi: megaraid: Convert timers to use timer_setup() 2017-11-01 11:27:08 -07:00
megaraid_mbox.c cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
megaraid_mbox.h scsi: megaraid: fix spelling mistake "maibox" -> "mailbox" 2018-09-25 20:59:27 -04:00
megaraid_mm.c scsi: megaraid_sas: NULL check before some freeing functions is not needed 2018-12-07 21:46:22 -05:00
megaraid_mm.h
megaraid_sas_base.c scsi: megaraid_sas: Block PCI config space access from userspace during OCR 2019-06-18 19:46:19 -04:00
megaraid_sas_fp.c scsi: megaraid: fix out-of-bound array accesses 2018-12-20 19:49:23 -05:00
megaraid_sas_fusion.c scsi: megaraid_sas: Block PCI config space access from userspace during OCR 2019-06-18 19:46:19 -04:00
megaraid_sas_fusion.h scsi: megaraid_sas: Add support for DEVICE_LIST DCMD in driver 2019-02-04 22:52:20 -05:00
megaraid_sas.h scsi: megaraid_sas: Block PCI config space access from userspace during OCR 2019-06-18 19:46:19 -04:00