From c52108c61bd3e97495858e6c7423d312093fcfba Mon Sep 17 00:00:00 2001 From: Xiaofei Tan Date: Fri, 11 Aug 2017 00:09:29 +0800 Subject: [PATCH] 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 Signed-off-by: John Garry Signed-off-by: Martin K. Petersen --- 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, -- GitLab