From: Xiaofei Tan <tanxiaofei@huawei.com>
Date: Fri, 11 Aug 2017 00:09:29 +0800
Subject: scsi: hisi_sas: add v2 hw DFX feature
Git-commit: c52108c61bd3e97495858e6c7423d312093fcfba
Patch-mainline: v4.14-rc1
References: bsc#1068693
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>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
drivers/scsi/hisi_sas/hisi_sas.h | 1 +
drivers/scsi/hisi_sas/hisi_sas_main.c | 7 ++++++-
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 22 ++++++++++++++++++++++
3 files changed, 29 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 3c4defad8c18..ef2238c6e4da 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -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);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index bd1d61958e10..aaa7296421a2 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -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;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index a762b259f68f..41e8033ad1c8 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -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,
--
2.14.2