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scsi: hisi_sas: add v2 hw DFX feature 

Add DFX feature for v2 hw. We are adding support for
the following errors:
- loss_of_dword_sync_count
- invalid_dword_count
- phy_reset_problem_count
- running_disparity_error_count

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Xiaofei Tan 2017-08-11 00:09:29 +08:00 committed by Martin K. Petersen
parent 01b361fc90
commit c52108c61b
3 changed files with 29 additions and 1 deletions
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1
drivers/scsi/hisi_sas/hisi_sas.h
View File

@ -193,6 +193,7 @@ struct hisi_sas_hw {
void (*phy_enable)(struct hisi_hba *hisi_hba, int phy_no);
void (*phy_disable)(struct hisi_hba *hisi_hba, int phy_no);
void (*phy_hard_reset)(struct hisi_hba *hisi_hba, int phy_no);
void (*get_events)(struct hisi_hba *hisi_hba, int phy_no);
void (*phy_set_linkrate)(struct hisi_hba *hisi_hba, int phy_no,
struct sas_phy_linkrates *linkrates);
enum sas_linkrate (*phy_get_max_linkrate)(void);

7
drivers/scsi/hisi_sas/hisi_sas_main.c
View File

@ -764,7 +764,12 @@ static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
case PHY_FUNC_SET_LINK_RATE:
hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, funcdata);
break;
case PHY_FUNC_GET_EVENTS:
if (hisi_hba->hw->get_events) {
hisi_hba->hw->get_events(hisi_hba, phy_no);
break;
}
/* fallthru */
case PHY_FUNC_RELEASE_SPINUP_HOLD:
default:
return -EOPNOTSUPP;

22
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
View File

@ -256,6 +256,8 @@
#define LINK_DFX2_RCVR_HOLD_STS_MSK (0x1 << LINK_DFX2_RCVR_HOLD_STS_OFF)
#define LINK_DFX2_SEND_HOLD_STS_OFF 10
#define LINK_DFX2_SEND_HOLD_STS_MSK (0x1 << LINK_DFX2_SEND_HOLD_STS_OFF)
#define SAS_ERR_CNT4_REG (PORT_BASE + 0x290)
#define SAS_ERR_CNT6_REG (PORT_BASE + 0x298)
#define PHY_CTRL_RDY_MSK (PORT_BASE + 0x2b0)
#define PHYCTRL_NOT_RDY_MSK (PORT_BASE + 0x2b4)
#define PHYCTRL_DWS_RESET_MSK (PORT_BASE + 0x2b8)
@ -1360,6 +1362,25 @@ static void phy_hard_reset_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
start_phy_v2_hw(hisi_hba, phy_no);
}
static void phy_get_events_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
struct asd_sas_phy *sas_phy = &phy->sas_phy;
struct sas_phy *sphy = sas_phy->phy;
u32 err4_reg_val, err6_reg_val;
/* loss dword syn, phy reset problem */
err4_reg_val = hisi_sas_phy_read32(hisi_hba, phy_no, SAS_ERR_CNT4_REG);
/* disparity err, invalid dword */
err6_reg_val = hisi_sas_phy_read32(hisi_hba, phy_no, SAS_ERR_CNT6_REG);
sphy->loss_of_dword_sync_count += (err4_reg_val >> 16) & 0xFFFF;
sphy->phy_reset_problem_count += err4_reg_val & 0xFFFF;
sphy->invalid_dword_count += (err6_reg_val & 0xFF0000) >> 16;
sphy->running_disparity_error_count += err6_reg_val & 0xFF;
}
static void start_phys_v2_hw(struct hisi_hba *hisi_hba)
{
int i;
@ -3457,6 +3478,7 @@ static const struct hisi_sas_hw hisi_sas_v2_hw = {
.phy_enable = enable_phy_v2_hw,
.phy_disable = disable_phy_v2_hw,
.phy_hard_reset = phy_hard_reset_v2_hw,
.get_events = phy_get_events_v2_hw,
.phy_set_linkrate = phy_set_linkrate_v2_hw,
.phy_get_max_linkrate = phy_get_max_linkrate_v2_hw,
.max_command_entries = HISI_SAS_COMMAND_ENTRIES_V2_HW,