[PATCH v2 13/15] vdpa/ifc/base: for blk device, live migration register is different from net device

[Andy Pei]

1.last_avail_idx is lower 16 bit of the register.
2.address of ring_state register is different between net and blk device.

Signed-off-by: Andy Pei <andy....@intel.com>
---
 drivers/vdpa/ifc/base/ifcvf.c | 36 +++++++++++++++++++++++++++++-------
 drivers/vdpa/ifc/base/ifcvf.h |  1 +
 2 files changed, 30 insertions(+), 7 deletions(-)

diff --git a/drivers/vdpa/ifc/base/ifcvf.c b/drivers/vdpa/ifc/base/ifcvf.c
index 3a69e53..a8a4728 100644
--- a/drivers/vdpa/ifc/base/ifcvf.c
+++ b/drivers/vdpa/ifc/base/ifcvf.c
@@ -216,10 +216,18 @@
                                &cfg->queue_used_hi);
                IFCVF_WRITE_REG16(hw->vring[i].size, &cfg->queue_size);
 
-               *(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
-                               (i / 2) * IFCVF_LM_CFG_SIZE + (i % 2) * 4) =
-                       (u32)hw->vring[i].last_avail_idx |
-                       ((u32)hw->vring[i].last_used_idx << 16);
+               if (hw->is_blk == IFCVF_BLK) {
+                       *(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
+                               i * IFCVF_LM_CFG_SIZE) =
+                               (u32)hw->vring[i].last_avail_idx |
+                               ((u32)hw->vring[i].last_used_idx << 16);
+               } else if (hw->is_blk == IFCVF_NET) {
+                       *(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
+                               (i / 2) * IFCVF_LM_CFG_SIZE +
+                               (i % 2) * 4) =
+                               (u32)hw->vring[i].last_avail_idx |
+                               ((u32)hw->vring[i].last_used_idx << 16);
+               }
 
                IFCVF_WRITE_REG16(i + 1, &cfg->queue_msix_vector);
                if (IFCVF_READ_REG16(&cfg->queue_msix_vector) ==
@@ -252,9 +260,23 @@
                IFCVF_WRITE_REG16(i, &cfg->queue_select);
                IFCVF_WRITE_REG16(0, &cfg->queue_enable);
                IFCVF_WRITE_REG16(IFCVF_MSI_NO_VECTOR, &cfg->queue_msix_vector);
-               ring_state = *(u32 *)(hw->lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
-                               (i / 2) * IFCVF_LM_CFG_SIZE + (i % 2) * 4);
-               hw->vring[i].last_avail_idx = (u16)(ring_state >> 16);
+
+               if (hw->is_blk) {
+                       ring_state = *(u32 *)(hw->lm_cfg +
+                                       IFCVF_LM_RING_STATE_OFFSET +
+                                       i * IFCVF_LM_CFG_SIZE);
+               } else if (hw->is_blk == IFCVF_NET) {
+                       ring_state = *(u32 *)(hw->lm_cfg +
+                                       IFCVF_LM_RING_STATE_OFFSET +
+                                       (i / 2) * IFCVF_LM_CFG_SIZE +
+                                       (i % 2) * 4);
+               }
+
+               if (hw->is_blk == IFCVF_BLK)
+                       hw->vring[i].last_avail_idx =
+                               (u16)(ring_state & IFCVF_16_BIT_MASK);
+               else if (hw->is_blk == IFCVF_NET)
+                       hw->vring[i].last_avail_idx = (u16)(ring_state >> 16);
                hw->vring[i].last_used_idx = (u16)(ring_state >> 16);
        }
 }
diff --git a/drivers/vdpa/ifc/base/ifcvf.h b/drivers/vdpa/ifc/base/ifcvf.h
index 8e602af..7367094 100644
--- a/drivers/vdpa/ifc/base/ifcvf.h
+++ b/drivers/vdpa/ifc/base/ifcvf.h
@@ -65,6 +65,7 @@
 #define IFCVF_MEDIATED_VRING           0x200000000000
 
 #define IFCVF_32_BIT_MASK              0xffffffff
+#define IFCVF_16_BIT_MASK              0xffff
 
 #ifndef VHOST_USER_PROTOCOL_F_CONFIG
 #define VHOST_USER_PROTOCOL_F_CONFIG   9
-- 
1.8.3.1