summaryrefslogtreecommitdiff
path: root/drivers/scsi/hisi_sas
diff options
context:
space:
mode:
authorJohn Garry <john.garry@huawei.com>2015-11-18 00:50:57 +0800
committerMartin K. Petersen <martin.petersen@oracle.com>2015-11-25 22:13:07 -0500
commite4189d539f78f335f57266d2c3a848cadbd3a00f (patch)
tree6ee9d34d595352f57b875bc9f25a571161f8a058 /drivers/scsi/hisi_sas
parent0efff300c72df76476d5d48d13a069ee04974ab3 (diff)
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 <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hisi_sas')
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas.h3
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas_main.c29
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas_v1_hw.c23
3 files changed, 55 insertions, 0 deletions
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),
};