hisi_sas: add v2 int init and phy up handler

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index 1990d65..a7b83bd 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -256,6 +256,11 @@ struct hisi_sas_complete_v2_hdr {
        __le32 dw3;
 };
 
+enum {
+       HISI_SAS_PHY_PHY_UPDOWN,
+       HISI_SAS_PHY_INT_NR
+};
+
 #define HISI_SAS_COMMAND_ENTRIES_V2_HW 4096
 
 static u32 hisi_sas_read32(struct hisi_hba *hisi_hba, u32 off)
@@ -610,6 +615,167 @@ static void phys_init_v2_hw(struct hisi_hba *hisi_hba)
        mod_timer(timer, jiffies + HZ);
 }
 
+static void sl_notify_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
+{
+       u32 sl_control;
+
+       sl_control = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
+       sl_control |= SL_CONTROL_NOTIFY_EN_MSK;
+       hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
+       msleep(1);
+       sl_control = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
+       sl_control &= ~SL_CONTROL_NOTIFY_EN_MSK;
+       hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
+}
+
+static int phy_up_v2_hw(int phy_no, struct hisi_hba *hisi_hba)
+{
+       int i, res = 0;
+       u32 context, port_id, link_rate, hard_phy_linkrate;
+       struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
+       struct asd_sas_phy *sas_phy = &phy->sas_phy;
+       struct device *dev = &hisi_hba->pdev->dev;
+       u32 *frame_rcvd = (u32 *)sas_phy->frame_rcvd;
+       struct sas_identify_frame *id = (struct sas_identify_frame *)frame_rcvd;
+
+       hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_PHY_ENA_MSK, 1);
+
+       /* Check for SATA dev */
+       context = hisi_sas_read32(hisi_hba, PHY_CONTEXT);
+       if (context & (1 << phy_no))
+               goto end;
+
+       if (phy_no == 8) {
+               u32 port_state = hisi_sas_read32(hisi_hba, PORT_STATE);
+
+               port_id = (port_state & PORT_STATE_PHY8_PORT_NUM_MSK) >>
+                         PORT_STATE_PHY8_PORT_NUM_OFF;
+               link_rate = (port_state & PORT_STATE_PHY8_CONN_RATE_MSK) >>
+                           PORT_STATE_PHY8_CONN_RATE_OFF;
+       } else {
+               port_id = hisi_sas_read32(hisi_hba, PHY_PORT_NUM_MA);
+               port_id = (port_id >> (4 * phy_no)) & 0xf;
+               link_rate = hisi_sas_read32(hisi_hba, PHY_CONN_RATE);
+               link_rate = (link_rate >> (phy_no * 4)) & 0xf;
+       }
+
+       if (port_id == 0xf) {
+               dev_err(dev, "phyup: phy%d invalid portid\n", phy_no);
+               res = IRQ_NONE;
+               goto end;
+       }
+
+       for (i = 0; i < 6; i++) {
+               u32 idaf = hisi_sas_phy_read32(hisi_hba, phy_no,
+                                              RX_IDAF_DWORD0 + (i * 4));
+               frame_rcvd[i] = __swab32(idaf);
+       }
+
+       /* Get the linkrates */
+       link_rate = hisi_sas_read32(hisi_hba, PHY_CONN_RATE);
+       link_rate = (link_rate >> (phy_no * 4)) & 0xf;
+       sas_phy->linkrate = link_rate;
+       hard_phy_linkrate = hisi_sas_phy_read32(hisi_hba, phy_no,
+                                               HARD_PHY_LINKRATE);
+       phy->maximum_linkrate = hard_phy_linkrate & 0xf;
+       phy->minimum_linkrate = (hard_phy_linkrate >> 4) & 0xf;
+
+       sas_phy->oob_mode = SAS_OOB_MODE;
+       memcpy(sas_phy->attached_sas_addr, &id->sas_addr, SAS_ADDR_SIZE);
+       dev_info(dev, "phyup: phy%d link_rate=%d\n", phy_no, link_rate);
+       phy->port_id = port_id;
+       phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
+       phy->phy_type |= PORT_TYPE_SAS;
+       phy->phy_attached = 1;
+       phy->identify.device_type = id->dev_type;
+       phy->frame_rcvd_size =  sizeof(struct sas_identify_frame);
+       if (phy->identify.device_type == SAS_END_DEVICE)
+               phy->identify.target_port_protocols =
+                       SAS_PROTOCOL_SSP;
+       else if (phy->identify.device_type != SAS_PHY_UNUSED)
+               phy->identify.target_port_protocols =
+                       SAS_PROTOCOL_SMP;
+       queue_work(hisi_hba->wq, &phy->phyup_ws);
+
+end:
+       hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0,
+                            CHL_INT0_SL_PHY_ENABLE_MSK);
+       hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_PHY_ENA_MSK, 0);
+
+       return res;
+}
+
+static irqreturn_t int_phy_updown_v2_hw(int irq_no, void *p)
+{
+       struct hisi_hba *hisi_hba = p;
+       u32 irq_msk;
+       int phy_no = 0;
+       irqreturn_t res = IRQ_HANDLED;
+
+       irq_msk = (hisi_sas_read32(hisi_hba, HGC_INVLD_DQE_INFO)
+                  >> HGC_INVLD_DQE_INFO_FB_CH0_OFF) & 0x1ff;
+       while (irq_msk) {
+               if (irq_msk  & 1) {
+                       u32 irq_value = hisi_sas_phy_read32(hisi_hba, phy_no,
+                                                           CHL_INT0);
+
+                       if (irq_value & CHL_INT0_SL_PHY_ENABLE_MSK)
+                               /* phy up */
+                               if (phy_up_v2_hw(phy_no, hisi_hba)) {
+                                       res = IRQ_NONE;
+                                       goto end;
+                               }
+
+               }
+               irq_msk >>= 1;
+               phy_no++;
+       }
+
+end:
+       return res;
+}
+
+static irq_handler_t phy_interrupts[HISI_SAS_PHY_INT_NR] = {
+       int_phy_updown_v2_hw,
+};
+
+/**
+ * There is a limitation in the hip06 chipset that we need
+ * to map in all mbigen interrupts, even if they are not used.
+ */
+static int interrupt_init_v2_hw(struct hisi_hba *hisi_hba)
+{
+       struct platform_device *pdev = hisi_hba->pdev;
+       struct device *dev = &pdev->dev;
+       int i, irq, rc, irq_map[128];
+
+
+       for (i = 0; i < 128; i++)
+               irq_map[i] = platform_get_irq(pdev, i);
+
+       for (i = 0; i < HISI_SAS_PHY_INT_NR; i++) {
+               int idx = i;
+
+               irq = irq_map[idx + 1]; /* Phy up/down is irq1 */
+               if (!irq) {
+                       dev_err(dev, "irq init: fail map phy interrupt %d\n",
+                               idx);
+                       return -ENOENT;
+               }
+
+               rc = devm_request_irq(dev, irq, phy_interrupts[i], 0,
+                                     DRV_NAME " phy", hisi_hba);
+               if (rc) {
+                       dev_err(dev, "irq init: could not request "
+                               "phy interrupt %d, rc=%d\n",
+                               irq, rc);
+                       return -ENOENT;
+               }
+       }
+
+       return 0;
+}
+
 static int hisi_sas_v2_init(struct hisi_hba *hisi_hba)
 {
        int rc;
@@ -618,6 +784,10 @@ static int hisi_sas_v2_init(struct hisi_hba *hisi_hba)
        if (rc)
                return rc;
 
+       rc = interrupt_init_v2_hw(hisi_hba);
+       if (rc)
+               return rc;
+
        phys_init_v2_hw(hisi_hba);
 
        return 0;
@@ -625,6 +795,7 @@ static int hisi_sas_v2_init(struct hisi_hba *hisi_hba)
 
 static const struct hisi_sas_hw hisi_sas_v2_hw = {
        .hw_init = hisi_sas_v2_init,
+       .sl_notify = sl_notify_v2_hw,
        .max_command_entries = HISI_SAS_COMMAND_ENTRIES_V2_HW,
        .complete_hdr_size = sizeof(struct hisi_sas_complete_v2_hdr),
 };