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Subject[PATCH 01/13] scsi: hisi_sas: Introduce hisi_sas_phy_set_linkrate()
Date
There is much common code and functionality between the
HW versions to set the PHY linkrate.

As such, this patch factors out the common code into
a generic function hisi_sas_phy_set_linkrate().

Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 29 +++++++++++++++++++++++++++-
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 35 ++++------------------------------
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 21 ++------------------
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 21 ++------------------
4 files changed, 36 insertions(+), 70 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 39f694e..f822d6f 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -866,6 +866,33 @@ 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 void hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no,
+ struct sas_phy_linkrates *r)
+{
+ struct sas_phy_linkrates _r;
+
+ struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
+ struct asd_sas_phy *sas_phy = &phy->sas_phy;
+ enum sas_linkrate min, max;
+
+ if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
+ max = sas_phy->phy->maximum_linkrate;
+ min = r->minimum_linkrate;
+ } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
+ max = r->maximum_linkrate;
+ min = sas_phy->phy->minimum_linkrate;
+ } else
+ return;
+
+ _r.maximum_linkrate = max;
+ _r.minimum_linkrate = min;
+
+ hisi_hba->hw->phy_disable(hisi_hba, phy_no);
+ msleep(100);
+ hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r);
+ hisi_hba->hw->phy_start(hisi_hba, phy_no);
+}
+
static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
void *funcdata)
{
@@ -889,7 +916,7 @@ static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
break;

case PHY_FUNC_SET_LINK_RATE:
- hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, funcdata);
+ hisi_sas_phy_set_linkrate(hisi_hba, phy_no, funcdata);
break;
case PHY_FUNC_GET_EVENTS:
if (hisi_hba->hw->get_events) {
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index abe175f..8fa79d0 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -855,39 +855,12 @@ static enum sas_linkrate phy_get_max_linkrate_v1_hw(void)
static void phy_set_linkrate_v1_hw(struct hisi_hba *hisi_hba, int phy_no,
struct sas_phy_linkrates *r)
{
- u32 prog_phy_link_rate =
- hisi_sas_phy_read32(hisi_hba, phy_no, PROG_PHY_LINK_RATE);
- struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
- struct asd_sas_phy *sas_phy = &phy->sas_phy;
- int i;
- enum sas_linkrate min, max;
- u32 rate_mask = 0;
-
- if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
- max = sas_phy->phy->maximum_linkrate;
- min = r->minimum_linkrate;
- } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
- max = r->maximum_linkrate;
- min = sas_phy->phy->minimum_linkrate;
- } else
- return;
-
- sas_phy->phy->maximum_linkrate = max;
- sas_phy->phy->minimum_linkrate = min;
-
- max -= SAS_LINK_RATE_1_5_GBPS;
+ enum sas_linkrate max = r->maximum_linkrate;
+ u32 prog_phy_link_rate = 0x800;

- for (i = 0; i <= max; i++)
- rate_mask |= 1 << (i * 2);
-
- prog_phy_link_rate &= ~0xff;
- prog_phy_link_rate |= rate_mask;
-
- disable_phy_v1_hw(hisi_hba, phy_no);
- msleep(100);
+ prog_phy_link_rate |= hisi_sas_get_prog_phy_linkrate_mask(max);
hisi_sas_phy_write32(hisi_hba, phy_no, PROG_PHY_LINK_RATE,
- prog_phy_link_rate);
- start_phy_v1_hw(hisi_hba, phy_no);
+ prog_phy_link_rate);
}

static int get_wideport_bitmap_v1_hw(struct hisi_hba *hisi_hba, int port_id)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index 911bb76..fb0e966 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -1600,29 +1600,12 @@ static enum sas_linkrate phy_get_max_linkrate_v2_hw(void)
static void phy_set_linkrate_v2_hw(struct hisi_hba *hisi_hba, int phy_no,
struct sas_phy_linkrates *r)
{
- struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
- struct asd_sas_phy *sas_phy = &phy->sas_phy;
- enum sas_linkrate min, max;
+ enum sas_linkrate max = r->maximum_linkrate;
u32 prog_phy_link_rate = 0x800;

- if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
- max = sas_phy->phy->maximum_linkrate;
- min = r->minimum_linkrate;
- } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
- max = r->maximum_linkrate;
- min = sas_phy->phy->minimum_linkrate;
- } else
- return;
-
- sas_phy->phy->maximum_linkrate = max;
- sas_phy->phy->minimum_linkrate = min;
prog_phy_link_rate |= hisi_sas_get_prog_phy_linkrate_mask(max);
-
- disable_phy_v2_hw(hisi_hba, phy_no);
- msleep(100);
hisi_sas_phy_write32(hisi_hba, phy_no, PROG_PHY_LINK_RATE,
- prog_phy_link_rate);
- start_phy_v2_hw(hisi_hba, phy_no);
+ prog_phy_link_rate);
}

static int get_wideport_bitmap_v2_hw(struct hisi_hba *hisi_hba, int port_id)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index c013673..0a80a39 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -1879,29 +1879,12 @@ static int hisi_sas_v3_init(struct hisi_hba *hisi_hba)
static void phy_set_linkrate_v3_hw(struct hisi_hba *hisi_hba, int phy_no,
struct sas_phy_linkrates *r)
{
- struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
- struct asd_sas_phy *sas_phy = &phy->sas_phy;
- enum sas_linkrate min, max;
+ enum sas_linkrate max = r->maximum_linkrate;
u32 prog_phy_link_rate = 0x800;

- if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
- max = sas_phy->phy->maximum_linkrate;
- min = r->minimum_linkrate;
- } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
- max = r->maximum_linkrate;
- min = sas_phy->phy->minimum_linkrate;
- } else
- return;
-
- sas_phy->phy->maximum_linkrate = max;
- sas_phy->phy->minimum_linkrate = min;
prog_phy_link_rate |= hisi_sas_get_prog_phy_linkrate_mask(max);
-
- disable_phy_v3_hw(hisi_hba, phy_no);
- msleep(100);
hisi_sas_phy_write32(hisi_hba, phy_no, PROG_PHY_LINK_RATE,
- prog_phy_link_rate);
- start_phy_v3_hw(hisi_hba, phy_no);
+ prog_phy_link_rate);
}

static void interrupt_disable_v3_hw(struct hisi_hba *hisi_hba)
--
1.9.1
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