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From: Andy Pei <andy.pei@intel.com>
To: dev@dpdk.org
Cc: chenbo.xia@intel.com, maxime.coquelin@redhat.com, gang.cao@intel.com,
changpeng.liu@intel.com
Subject: [PATCH v5 14/16] vdpa/ifc/base: for blk device,
live migration register is different from net device
Date: Mon, 28 Mar 2022 15:17:40 +0800
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Errors-To: dev-bounces@dpdk.org
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.pei@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 e417c50..d923266 100644
--- a/drivers/vdpa/ifc/base/ifcvf.c
+++ b/drivers/vdpa/ifc/base/ifcvf.c
@@ -218,10 +218,18 @@
&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) ==
@@ -254,9 +262,23 @@
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