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scsi: be2iscsi: Add TPE recovery feature

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After UE is detected, check for recoverable error by reading
SLIPORT SEMAPHORE register. If transient parity error i.e. 0xExxx
then schedule recovery work on driver wq.

FLag this error to prevent any transactions for the duration of ue2rp to
restart polling. After that, if FW becomes ready then recover port.

Wake up processes in wq before going offline.
Wait for process to execute before cleaning up.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Jitendra Bhivare
2016-08-19 15:20:18 +05:30
committed by Martin K. Petersen
parent f79929deb5
commit d1d5ca887c
7 changed files with 629 additions and 430 deletions
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6
drivers/scsi/be2iscsi/be_main.h
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@@ -393,7 +393,7 @@ struct beiscsi_hba {
} fw_config;
unsigned long state;
#define BEISCSI_HBA_RUNNING 0
#define BEISCSI_HBA_ONLINE 0
#define BEISCSI_HBA_LINK_UP 1
#define BEISCSI_HBA_BOOT_FOUND 2
#define BEISCSI_HBA_BOOT_WORK 3
@@ -417,6 +417,7 @@ struct beiscsi_hba {
/* check for UE every 1000ms */
#define BEISCSI_UE_DETECT_INTERVAL 1000
u32 ue2rp;
struct delayed_work recover_port;
bool mac_addr_set;
u8 mac_address[ETH_ALEN];
@@ -455,6 +456,9 @@ struct beiscsi_hba {
};
#define beiscsi_hba_in_error(phba) ((phba)->state & BEISCSI_HBA_IN_ERR)
#define beiscsi_hba_is_online(phba) \
(!beiscsi_hba_in_error((phba)) && \
test_bit(BEISCSI_HBA_ONLINE, &phba->state))
struct beiscsi_session {
struct pci_pool *bhs_pool;