From e4189d539f78f335f57266d2c3a848cadbd3a00f Mon Sep 17 00:00:00 2001 From: John Garry Date: Wed, 18 Nov 2015 00:50:57 +0800 Subject: [PATCH] hisi_sas: Add control phy handler Add method for lldd_control_phy. Currently link rate control and spinup hold is unsupported. Signed-off-by: John Garry Reviewed-by: Arnd Bergmann Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/hisi_sas.h | 3 +++ drivers/scsi/hisi_sas/hisi_sas_main.c | 29 ++++++++++++++++++++++++++ drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 23 ++++++++++++++++++++ 3 files changed, 55 insertions(+) diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index 15adeca5ddc9..5b790c9438d6 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -137,6 +137,9 @@ struct hisi_sas_hw { struct hisi_sas_slot *slot); int (*slot_complete)(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot, int abort); + 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 (*free_device)(struct hisi_hba *hisi_hba, struct hisi_sas_device *dev); int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id); diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 4ee90eb55a0f..137762515aa9 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -552,6 +552,34 @@ static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) return hisi_sas_task_exec(task, gfp_flags, 0, NULL); } +static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, + void *funcdata) +{ + struct sas_ha_struct *sas_ha = sas_phy->ha; + struct hisi_hba *hisi_hba = sas_ha->lldd_ha; + int phy_no = sas_phy->id; + + switch (func) { + case PHY_FUNC_HARD_RESET: + hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); + break; + + case PHY_FUNC_LINK_RESET: + hisi_hba->hw->phy_enable(hisi_hba, phy_no); + hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); + break; + + case PHY_FUNC_DISABLE: + hisi_hba->hw->phy_disable(hisi_hba, phy_no); + break; + + case PHY_FUNC_SET_LINK_RATE: + case PHY_FUNC_RELEASE_SPINUP_HOLD: + default: + return -EOPNOTSUPP; + } + return 0; +} static void hisi_sas_task_done(struct sas_task *task) { @@ -932,6 +960,7 @@ static struct sas_domain_function_template hisi_sas_transport_ops = { .lldd_dev_found = hisi_sas_dev_found, .lldd_dev_gone = hisi_sas_dev_gone, .lldd_execute_task = hisi_sas_queue_command, + .lldd_control_phy = hisi_sas_control_phy, .lldd_abort_task = hisi_sas_abort_task, .lldd_abort_task_set = hisi_sas_abort_task_set, .lldd_clear_aca = hisi_sas_clear_aca, diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c index 64b17a183090..a95259cdc2bf 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c @@ -764,6 +764,14 @@ static void enable_phy_v1_hw(struct hisi_hba *hisi_hba, int phy_no) hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg); } +static void disable_phy_v1_hw(struct hisi_hba *hisi_hba, int phy_no) +{ + u32 cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CFG); + + cfg &= ~PHY_CFG_ENA_MSK; + hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg); +} + static void start_phy_v1_hw(struct hisi_hba *hisi_hba, int phy_no) { config_id_frame_v1_hw(hisi_hba, phy_no); @@ -772,6 +780,18 @@ static void start_phy_v1_hw(struct hisi_hba *hisi_hba, int phy_no) enable_phy_v1_hw(hisi_hba, phy_no); } +static void stop_phy_v1_hw(struct hisi_hba *hisi_hba, int phy_no) +{ + disable_phy_v1_hw(hisi_hba, phy_no); +} + +static void phy_hard_reset_v1_hw(struct hisi_hba *hisi_hba, int phy_no) +{ + stop_phy_v1_hw(hisi_hba, phy_no); + msleep(100); + start_phy_v1_hw(hisi_hba, phy_no); +} + static void start_phys_v1_hw(unsigned long data) { struct hisi_hba *hisi_hba = (struct hisi_hba *)data; @@ -1687,6 +1707,9 @@ static const struct hisi_sas_hw hisi_sas_v1_hw = { .get_free_slot = get_free_slot_v1_hw, .start_delivery = start_delivery_v1_hw, .slot_complete = slot_complete_v1_hw, + .phy_enable = enable_phy_v1_hw, + .phy_disable = disable_phy_v1_hw, + .phy_hard_reset = phy_hard_reset_v1_hw, .get_wideport_bitmap = get_wideport_bitmap_v1_hw, .complete_hdr_size = sizeof(struct hisi_sas_complete_v1_hdr), }; -- 2.34.1