diff mbox series

[v2,13/20] net/ice/base: add function to get rxq context

Message ID 20230518151638.1207021-14-qiming.yang@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Qi Zhang
Headers
Series net/ice/base: code update |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Qiming Yang May 18, 2023, 3:16 p.m. UTC 
  This patch exports rxq context which is consumed by linux live migration
driver to save device state.

Signed-off-by: Yahui Cao <yahui.cao@intel.com>
Signed-off-by: Qiming Yang <qiming.yang@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 mbox series

Patch

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,