diff options
| author | Vikas Chaudhary <vikas.chaudhary@qlogic.com> | 2012-11-23 06:58:38 -0500 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-01-29 13:55:06 +1100 |
| commit | 5c19b92ae82a2b39add78b2d2bc1c4e4d7c4d2ec (patch) | |
| tree | 6c90d253925988191a522e0f718a871110fe646a /drivers/scsi/qla4xxx/ql4_def.h | |
| parent | 8108de9739abeec72f4811532109695e245df42a (diff) | |
[SCSI] qla4xxx: Fix MBOX intr switching from polling to intr mode for ISP83XX
Issue:
Mailbox command timed out after switching from polling mode to interrupt mode.
Events:-
1. Mailbox interrupts are disabled
2. FW generates AEN and at same time driver enables Mailbox Interrupt
3. Driver issues new mailbox to Firmware
In above case driver will not get AEN interrupts generated by FW in step #2 as
FW generated this AEN when interrupts are disabled. During the same time
driver enabled the mailbox interrupt, so driver will not poll for interrupt.
Driver will never process AENs generated in step #2 and issues new mailbox to
FW, but now FW is not able to post mailbox completion as AENs generated before
are not processed by driver.
Fix:
Enable Mailbox / AEN interrupts before initializing FW in case of ISP83XX.
This will make sure we process all Mailbox and AENs in interrupt mode.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_def.h')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_def.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h index 329d553eae9..c71a371c452 100644 --- a/drivers/scsi/qla4xxx/ql4_def.h +++ b/drivers/scsi/qla4xxx/ql4_def.h @@ -516,6 +516,8 @@ struct scsi_qla_host { #define AF_8XXX_RST_OWNER 25 /* 0x02000000 */ #define AF_82XX_DUMP_READING 26 /* 0x04000000 */ #define AF_83XX_NO_FW_DUMP 27 /* 0x08000000 */ +#define AF_83XX_IOCB_INTR_ON 28 /* 0x10000000 */ +#define AF_83XX_MBOX_INTR_ON 29 /* 0x20000000 */ unsigned long dpc_flags; |