scsi: hisi_sas: add get_wideport_bitmap_v3_hw()

Add code for interface get_wideport_bitmap.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index ef5c15817181f4fd40ad234a64959495b2dabdff..3cd4b9a77e2216f32b90ea581a18ef63008bb0ce 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -629,6 +629,18 @@ static void sl_notify_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
        hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
 }
 
+static int get_wideport_bitmap_v3_hw(struct hisi_hba *hisi_hba, int port_id)
+{
+       int i, bitmap = 0;
+       u32 phy_port_num_ma = hisi_sas_read32(hisi_hba, PHY_PORT_NUM_MA);
+
+       for (i = 0; i < hisi_hba->n_phy; i++)
+               if (((phy_port_num_ma >> (i * 4)) & 0xf) == port_id)
+                       bitmap |= 1 << i;
+
+       return bitmap;
+}
+
 /**
  * The callpath to this function and upto writing the write
  * queue pointer should be safe from interruption.
@@ -1550,6 +1562,7 @@ static const struct hisi_sas_hw hisi_sas_v3_hw = {
        .hw_init = hisi_sas_v3_init,
        .setup_itct = setup_itct_v3_hw,
        .max_command_entries = HISI_SAS_COMMAND_ENTRIES_V3_HW,
+       .get_wideport_bitmap = get_wideport_bitmap_v3_hw,
        .complete_hdr_size = sizeof(struct hisi_sas_complete_v3_hdr),
        .free_device = free_device_v3_hw,
        .sl_notify = sl_notify_v3_hw,