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scsi: hisi_sas: check SATA FIS when directly attaching SATA device 

Check ERR bit of status to decide whether there is something wrong with
initial register-D2H FIS. If error exists, PHY reset the channel to
restart OOB.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Xiang Chen 2016-11-07 20:48:38 +08:00 committed by Martin K. Petersen
parent ee44bfe457
commit 04708ff4c2
1 changed files with 10 additions and 0 deletions
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10
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
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@ -2537,6 +2537,16 @@ static irqreturn_t sata_int_v2_hw(int irq_no, void *p)
goto end;
}
/* check ERR bit of Status Register */
if (fis->status & ATA_ERR) {
dev_warn(dev, "sata int: phy%d FIS status: 0x%x\n", phy_no,
fis->status);
disable_phy_v2_hw(hisi_hba, phy_no);
enable_phy_v2_hw(hisi_hba, phy_no);
res = IRQ_NONE;
goto end;
}
if (unlikely(phy_no == 8)) {
u32 port_state = hisi_sas_read32(hisi_hba, PORT_STATE);