This patch exports rxq context which is consumed by linux live migration
driver to save device state.
Signed-off-by: Yahui Cao <yahui....@intel.com>
Signed-off-by: Qiming Yang <qiming.y...@intel.com>
---
drivers/net/ice/base/ice_common.c | 67 ++++++++++++++++++++++++++++---
drivers/net/ice/base/ice_common.h | 7 +++-
2 files changed, 67 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ice/base/ice_common.c
b/drivers/net/ice/base/ice_common.c
index a958ecef83..9992d0ad4d 100644
--- a/drivers/net/ice/base/ice_common.c
+++ b/drivers/net/ice/base/ice_common.c
@@ -1381,6 +1381,37 @@ ice_copy_rxq_ctx_to_hw(struct ice_hw *hw, u8
*ice_rxq_ctx, u32 rxq_index)
return ICE_SUCCESS;
}
+/**
+ * ice_copy_rxq_ctx_from_hw - Copy rxq context register from HW
+ * @hw: pointer to the hardware structure
+ * @ice_rxq_ctx: pointer to the rxq context
+ * @rxq_index: the index of the Rx queue
+ *
+ * Copies rxq context from HW register space to dense structure
+ */
+static enum ice_status
+ice_copy_rxq_ctx_from_hw(struct ice_hw *hw, u8 *ice_rxq_ctx, u32 rxq_index)
+{
+ u8 i;
+
+ if (!ice_rxq_ctx)
+ return ICE_ERR_BAD_PTR;
+
+ if (rxq_index > QRX_CTRL_MAX_INDEX)
+ return ICE_ERR_PARAM;
+
+ /* Copy each dword separately from HW */
+ for (i = 0; i < ICE_RXQ_CTX_SIZE_DWORDS; i++) {
+ u32 *ctx = (u32 *)(ice_rxq_ctx + (i * sizeof(u32)));
+
+ *ctx = rd32(hw, QRX_CONTEXT(i, rxq_index));
+
+ ice_debug(hw, ICE_DBG_QCTX, "qrxdata[%d]: %08X\n", i, *ctx);
+ }
+
+ return ICE_SUCCESS;
+}
+
/* LAN Rx Queue Context */
static const struct ice_ctx_ele ice_rlan_ctx_info[] = {
/* Field Width LSB */
@@ -1432,6 +1463,32 @@ ice_write_rxq_ctx(struct ice_hw *hw, struct ice_rlan_ctx
*rlan_ctx,
return ice_copy_rxq_ctx_to_hw(hw, ctx_buf, rxq_index);
}
+/**
+ * ice_read_rxq_ctx - Read rxq context from HW
+ * @hw: pointer to the hardware structure
+ * @rlan_ctx: pointer to the rxq context
+ * @rxq_index: the index of the Rx queue
+ *
+ * Read rxq context from HW register space and then converts it from dense
+ * structure to sparse
+ */
+enum ice_status
+ice_read_rxq_ctx(struct ice_hw *hw, struct ice_rlan_ctx *rlan_ctx,
+ u32 rxq_index)
+{
+ u8 ctx_buf[ICE_RXQ_CTX_SZ] = { 0 };
+ enum ice_status status;
+
+ if (!rlan_ctx)
+ return ICE_ERR_BAD_PTR;
+
+ status = ice_copy_rxq_ctx_from_hw(hw, ctx_buf, rxq_index);
+ if (status)
+ return status;
+
+ return ice_get_ctx(ctx_buf, (u8 *)rlan_ctx, ice_rlan_ctx_info);
+}
+
/**
* ice_clear_rxq_ctx
* @hw: pointer to the hardware structure
@@ -4824,7 +4881,7 @@ ice_aq_get_internal_data(struct ice_hw *hw, u8
cluster_id, u16 table_id,
* @ce_info: a description of the struct to be filled
*/
static void
-ice_read_byte(u8 *src_ctx, u8 *dest_ctx, struct ice_ctx_ele *ce_info)
+ice_read_byte(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info)
{
u8 dest_byte, mask;
u8 *src, *target;
@@ -4860,7 +4917,7 @@ ice_read_byte(u8 *src_ctx, u8 *dest_ctx, struct
ice_ctx_ele *ce_info)
* @ce_info: a description of the struct to be filled
*/
static void
-ice_read_word(u8 *src_ctx, u8 *dest_ctx, struct ice_ctx_ele *ce_info)
+ice_read_word(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info)
{
u16 dest_word, mask;
u8 *src, *target;
@@ -4903,7 +4960,7 @@ ice_read_word(u8 *src_ctx, u8 *dest_ctx, struct
ice_ctx_ele *ce_info)
* @ce_info: a description of the struct to be filled
*/
static void
-ice_read_dword(u8 *src_ctx, u8 *dest_ctx, struct ice_ctx_ele *ce_info)
+ice_read_dword(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info)
{
u32 dest_dword, mask;
__le32 src_dword;
@@ -4954,7 +5011,7 @@ ice_read_dword(u8 *src_ctx, u8 *dest_ctx, struct
ice_ctx_ele *ce_info)
* @ce_info: a description of the struct to be filled
*/
static void
-ice_read_qword(u8 *src_ctx, u8 *dest_ctx, struct ice_ctx_ele *ce_info)
+ice_read_qword(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info)
{
u64 dest_qword, mask;
__le64 src_qword;
@@ -5005,7 +5062,7 @@ ice_read_qword(u8 *src_ctx, u8 *dest_ctx, struct
ice_ctx_ele *ce_info)
* @ce_info: a description of the structure to be read from
*/
enum ice_status
-ice_get_ctx(u8 *src_ctx, u8 *dest_ctx, struct ice_ctx_ele *ce_info)
+ice_get_ctx(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info)
{
int f;
diff --git a/drivers/net/ice/base/ice_common.h
b/drivers/net/ice/base/ice_common.h
index e1febfb0c4..aff361e5aa 100644
--- a/drivers/net/ice/base/ice_common.h
+++ b/drivers/net/ice/base/ice_common.h
@@ -86,6 +86,9 @@ ice_aq_get_internal_data(struct ice_hw *hw, u8 cluster_id,
u16 table_id,
enum ice_status
ice_write_rxq_ctx(struct ice_hw *hw, struct ice_rlan_ctx *rlan_ctx,
u32 rxq_index);
+enum ice_status
+ice_read_rxq_ctx(struct ice_hw *hw, struct ice_rlan_ctx *rlan_ctx,
+ u32 rxq_index);
enum ice_status ice_clear_rxq_ctx(struct ice_hw *hw, u32 rxq_index);
enum ice_status
ice_clear_tx_cmpltnq_ctx(struct ice_hw *hw, u32 tx_cmpltnq_index);
@@ -128,6 +131,8 @@ extern const struct ice_ctx_ele ice_tlan_ctx_info[];
enum ice_status
ice_set_ctx(struct ice_hw *hw, u8 *src_ctx, u8 *dest_ctx,
const struct ice_ctx_ele *ce_info);
+enum ice_status
+ice_get_ctx(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info);
enum ice_status
ice_aq_send_cmd(struct ice_hw *hw, struct ice_aq_desc *desc,
@@ -221,8 +226,6 @@ ice_aq_read_topo_dev_nvm(struct ice_hw *hw,
u32 start_address, u8 *buf, u8 buf_size,
struct ice_sq_cd *cd);
-enum ice_status
-ice_get_ctx(u8 *src_ctx, u8 *dest_ctx, struct ice_ctx_ele *ce_info);
enum ice_status
ice_dis_vsi_txq(struct ice_port_info *pi, u16 vsi_handle, u8 tc, u8 num_queues,
u16 *q_handle, u16 *q_ids, u32 *q_teids,
--
2.25.1
