[dpdk-dev] [PATCH v3 20/53] net/ice/baes: add NVM help functions

[Qi Zhang <qi.z.zhang@intel.com>]

Add couple functions that DPDK would like to use for accessing the
NVM.

Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/ice/base/ice_common.h |  1 -
 drivers/net/ice/base/ice_nvm.c    | 67 +++++++++++++++++++++++++++++++++++++--
 drivers/net/ice/base/ice_nvm.h    | 10 ++++++
 3 files changed, 74 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ice/base/ice_common.h b/drivers/net/ice/base/ice_common.h
index 6d971a644..46741a3f1 100644
--- a/drivers/net/ice/base/ice_common.h
+++ b/drivers/net/ice/base/ice_common.h
@@ -18,7 +18,6 @@ enum ice_fw_modes {
 	ICE_FW_MODE_ROLLBACK
 };
 
-enum ice_status ice_nvm_validate_checksum(struct ice_hw *hw);
 enum ice_status ice_init_fltr_mgmt_struct(struct ice_hw *hw);
 void ice_cleanup_fltr_mgmt_struct(struct ice_hw *hw);
 enum ice_status ice_init_hw(struct ice_hw *hw);
diff --git a/drivers/net/ice/base/ice_nvm.c b/drivers/net/ice/base/ice_nvm.c
index d5e6215de..bedfbcbb4 100644
--- a/drivers/net/ice/base/ice_nvm.c
+++ b/drivers/net/ice/base/ice_nvm.c
@@ -17,7 +17,7 @@
  *
  * Read the NVM using the admin queue commands (0x0701)
  */
-static enum ice_status
+enum ice_status
 ice_aq_read_nvm(struct ice_hw *hw, u16 module_typeid, u32 offset, u16 length,
 		void *data, bool last_command, bool read_shadow_ram,
 		struct ice_sq_cd *cd)
@@ -186,7 +186,7 @@ ice_read_sr_buf_aq(struct ice_hw *hw, u16 offset, u16 *words, u16 *data)
  *
  * This function will request NVM ownership.
  */
-static enum ice_status
+enum ice_status
 ice_acquire_nvm(struct ice_hw *hw, enum ice_aq_res_access_type access)
 {
 	ice_debug(hw, ICE_DBG_TRACE, "%s\n", __func__);
@@ -203,7 +203,7 @@ ice_acquire_nvm(struct ice_hw *hw, enum ice_aq_res_access_type access)
  *
  * This function will release NVM ownership.
  */
-static void ice_release_nvm(struct ice_hw *hw)
+void ice_release_nvm(struct ice_hw *hw)
 {
 	ice_debug(hw, ICE_DBG_TRACE, "%s\n", __func__);
 
@@ -301,6 +301,67 @@ ice_get_pfa_module_tlv(struct ice_hw *hw, u16 *module_tlv, u16 *module_tlv_len,
 }
 
 /**
+ * ice_read_pba_string - Reads part number string from NVM
+ * @hw: pointer to hardware structure
+ * @pba_num: stores the part number string from the NVM
+ * @pba_num_size: part number string buffer length
+ *
+ * Reads the part number string from the NVM.
+ */
+enum ice_status
+ice_read_pba_string(struct ice_hw *hw, u8 *pba_num, u32 pba_num_size)
+{
+	u16 pba_tlv, pba_tlv_len;
+	enum ice_status status;
+	u16 pba_word, pba_size;
+	u16 i;
+
+	status = ice_get_pfa_module_tlv(hw, &pba_tlv, &pba_tlv_len,
+					ICE_SR_PBA_BLOCK_PTR);
+	if (status != ICE_SUCCESS) {
+		ice_debug(hw, ICE_DBG_INIT, "Failed to read PBA Block TLV.\n");
+		return status;
+	}
+
+	/* pba_size is the next word */
+	status = ice_read_sr_word(hw, (pba_tlv + 2), &pba_size);
+	if (status != ICE_SUCCESS) {
+		ice_debug(hw, ICE_DBG_INIT, "Failed to read PBA Section size.\n");
+		return status;
+	}
+
+	if (pba_tlv_len < pba_size) {
+		ice_debug(hw, ICE_DBG_INIT, "Invalid PBA Block TLV size.\n");
+		return ICE_ERR_INVAL_SIZE;
+	}
+
+	/* Subtract one to get PBA word count (PBA Size word is included in
+	 * total size)
+	 */
+	pba_size--;
+	if (pba_num_size < (((u32)pba_size * 2) + 1)) {
+		ice_debug(hw, ICE_DBG_INIT,
+			  "Buffer too small for PBA data.\n");
+		return ICE_ERR_PARAM;
+	}
+
+	for (i = 0; i < pba_size; i++) {
+		status = ice_read_sr_word(hw, (pba_tlv + 2 + 1) + i, &pba_word);
+		if (status != ICE_SUCCESS) {
+			ice_debug(hw, ICE_DBG_INIT,
+				  "Failed to read PBA Block word %d.\n", i);
+			return status;
+		}
+
+		pba_num[(i * 2)] = (pba_word >> 8) & 0xFF;
+		pba_num[(i * 2) + 1] = pba_word & 0xFF;
+	}
+	pba_num[(pba_size * 2)] = '\0';
+
+	return status;
+}
+
+/**
  * ice_get_orom_ver_info - Read Option ROM version information
  * @hw: pointer to the HW struct
  *
diff --git a/drivers/net/ice/base/ice_nvm.h b/drivers/net/ice/base/ice_nvm.h
index 9a61d4153..8e2eb4df1 100644
--- a/drivers/net/ice/base/ice_nvm.h
+++ b/drivers/net/ice/base/ice_nvm.h
@@ -85,13 +85,23 @@ enum ice_status
 ice_handle_nvm_access(struct ice_hw *hw, struct ice_nvm_access_cmd *cmd,
 		      union ice_nvm_access_data *data);
 enum ice_status
+ice_acquire_nvm(struct ice_hw *hw, enum ice_aq_res_access_type access);
+void ice_release_nvm(struct ice_hw *hw);
+enum ice_status
+ice_aq_read_nvm(struct ice_hw *hw, u16 module_typeid, u32 offset, u16 length,
+		void *data, bool last_command, bool read_shadow_ram,
+		struct ice_sq_cd *cd);
+enum ice_status
 ice_read_flat_nvm(struct ice_hw *hw, u32 offset, u32 *length, u8 *data,
 		  bool read_shadow_ram);
 enum ice_status
 ice_get_pfa_module_tlv(struct ice_hw *hw, u16 *module_tlv, u16 *module_tlv_len,
 		       u16 module_type);
+enum ice_status
+ice_read_pba_string(struct ice_hw *hw, u8 *pba_num, u32 pba_num_size);
 enum ice_status ice_init_nvm(struct ice_hw *hw);
 enum ice_status ice_read_sr_word(struct ice_hw *hw, u16 offset, u16 *data);
 enum ice_status
 ice_read_sr_buf(struct ice_hw *hw, u16 offset, u16 *words, u16 *data);
+enum ice_status ice_nvm_validate_checksum(struct ice_hw *hw);
 #endif /* _ICE_NVM_H_ */
-- 
2.13.6