diff options
| author | Andrew Vasquez <andrew.vasquez@qlogic.com> | 2008-01-17 09:02:10 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-01-23 11:29:31 -0600 |
| commit | 6f13fd57cd84c06cea6c4b6d61517a4350820a9f (patch) | |
| tree | c940eff7870732ba7197625203442d7e46407de6 | |
| parent | 3776541d8a46347a4924353a192c6ce4a3d04e2e (diff) | |
[SCSI] qla2xxx: Wait for FLASH write-protection to complete after a write.
Some flash parts have a slow enable write-protection (WP)
operation whereby subsequent FLASH accesses would fail if the WP
operation had not completed. Software now polls the SPI's
status-register for WP completion.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_sup.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c index ad2fa01bd23..af16c55b47a 100644 --- a/drivers/scsi/qla2xxx/qla_sup.c +++ b/drivers/scsi/qla2xxx/qla_sup.c @@ -550,7 +550,7 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t *dwptr, uint32_t faddr, int ret; uint32_t liter, miter; uint32_t sec_mask, rest_addr, conf_addr; - uint32_t fdata, findex ; + uint32_t fdata, findex, cnt; uint8_t man_id, flash_id; struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; dma_addr_t optrom_dma; @@ -690,8 +690,14 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t *dwptr, uint32_t faddr, 0xff0000) | ((fdata >> 16) & 0xff)); } - /* Enable flash write-protection. */ + /* Enable flash write-protection and wait for completion. */ qla24xx_write_flash_dword(ha, flash_conf_to_access_addr(0x101), 0x9c); + for (cnt = 300; cnt && + qla24xx_read_flash_dword(ha, + flash_conf_to_access_addr(0x005)) & BIT_0; + cnt--) { + udelay(10); + } /* Disable flash write. */ WRT_REG_DWORD(®->ctrl_status, |