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Date: Mon, 26 Oct 2015 22:15:01 +0800
From: John Garry <john.garry@...wei.com>
To: <JBottomley@...n.com>, <robh+dt@...nel.org>, <pawel.moll@....com>,
<mark.rutland@....com>, <ijc+devicetree@...lion.org.uk>,
<galak@...eaurora.org>, <arnd@...db.de>
CC: <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linuxarm@...wei.com>,
<john.garry2@...l.dcu.ie>, <hare@...e.de>, <xuwei5@...ilicon.com>,
<zhangfei.gao@...aro.org>, John Garry <john.garry@...wei.com>
Subject: [PATCH v2 30/32] scsi: 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@...wei.com>
---
drivers/scsi/hisi_sas/hisi_sas.h | 3 +++
drivers/scsi/hisi_sas/hisi_sas_main.c | 37 ++++++++++++++++++++++++++++++++++
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 23 +++++++++++++++++++++
3 files changed, 63 insertions(+)
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index fae73cd..982b51d 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -140,6 +140,9 @@ 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 4f3a818..d21491a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -641,6 +641,42 @@ static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
return hisi_sas_task_exec(task, gfp_flags, NULL, 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 = NULL;
+ int phy_no = 0;
+
+ while (sas_ha->sas_phy[phy_no]) {
+ if (sas_ha->sas_phy[phy_no] == sas_phy) {
+ hisi_hba = (struct hisi_hba *)sas_ha->lldd_ha;
+ break;
+ }
+ phy_no++;
+ }
+
+ 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)
{
@@ -1027,6 +1063,7 @@ 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 0a2f97e..d7ad515 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -763,6 +763,14 @@ 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);
@@ -771,6 +779,18 @@ 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;
@@ -1713,6 +1733,9 @@ 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),
};
--
1.9.1
--
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