[PATCH 21/22] scsi: hisi_sas: add v3 code to fill some more hw function pointers

[John Garry]

From: Xiang Chen <chenxian...@hisilicon.com>

Add code to fill the interface of phy_hard_reset, phy_get_max_linkrate,
and phy enable/disable.

Signed-off-by: John Garry <john.ga...@huawei.com>
Signed-off-by: Xiang Chen <chenxian...@hisilicon.com>
---
 drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 39 ++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c 
b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 195276b..766455a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -195,6 +195,8 @@
 #define TXID_AUTO                              (PORT_BASE + 0xb8)
 #define CT3_OFF                1
 #define CT3_MSK                (0x1 << CT3_OFF)
+#define TX_HARDRST_OFF          2
+#define TX_HARDRST_MSK          (0x1 << TX_HARDRST_OFF)
 #define RX_IDAF_DWORD0                 (PORT_BASE + 0xc4)
 #define RXOP_CHECK_CFG_H               (PORT_BASE + 0xfc)
 #define SAS_SSP_CON_TIMER_CFG          (PORT_BASE + 0x134)
@@ -648,6 +650,14 @@ static void enable_phy_v3_hw(struct hisi_hba *hisi_hba, 
int phy_no)
        hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg);
 }
 
+static void disable_phy_v3_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_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
 {
        config_id_frame_v3_hw(hisi_hba, phy_no);
@@ -655,6 +665,11 @@ static void start_phy_v3_hw(struct hisi_hba *hisi_hba, int 
phy_no)
        enable_phy_v3_hw(hisi_hba, phy_no);
 }
 
+static void stop_phy_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
+{
+       disable_phy_v3_hw(hisi_hba, phy_no);
+}
+
 static void start_phys_v3_hw(struct hisi_hba *hisi_hba)
 {
        int i;
@@ -663,6 +678,22 @@ static void start_phys_v3_hw(struct hisi_hba *hisi_hba)
                start_phy_v3_hw(hisi_hba, i);
 }
 
+static void phy_hard_reset_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
+{
+       struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
+       u32 txid_auto;
+
+       stop_phy_v3_hw(hisi_hba, phy_no);
+       if (phy->identify.device_type == SAS_END_DEVICE) {
+               txid_auto = hisi_sas_phy_read32(hisi_hba, phy_no, TXID_AUTO);
+               hisi_sas_phy_write32(hisi_hba, phy_no, TXID_AUTO,
+                                       txid_auto | TX_HARDRST_MSK);
+       }
+       msleep(100);
+       start_phy_v3_hw(hisi_hba, phy_no);
+}
+
+
 static void phys_init_v3_hw(struct hisi_hba *hisi_hba)
 {
        start_phys_v3_hw(hisi_hba);
@@ -1961,6 +1992,10 @@ static int hisi_sas_v3_init(struct hisi_hba *hisi_hba)
        return 0;
 }
 
+enum sas_linkrate phy_get_max_linkrate_v3_hw(void)
+{
+       return SAS_LINK_RATE_12_0_GBPS;
+}
 
 static const struct hisi_sas_hw hisi_sas_v3_hw = {
        .hw_init = hisi_sas_v3_init,
@@ -1978,6 +2013,10 @@ static int hisi_sas_v3_init(struct hisi_hba *hisi_hba)
        .start_delivery = start_delivery_v3_hw,
        .slot_complete = slot_complete_v3_hw,
        .phys_init = phys_init_v3_hw,
+       .phy_enable = enable_phy_v3_hw,
+       .phy_disable = disable_phy_v3_hw,
+       .phy_hard_reset = phy_hard_reset_v3_hw,
+       .phy_get_max_linkrate = phy_get_max_linkrate_v3_hw,
 };
 
 enum {
-- 
1.9.1