qed: Add APIs for flash access.

This patch adds APIs for flash access.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed.h

@@ -81,6 +81,13 @@ enum qed_coalescing_mode {
 	QED_COAL_MODE_ENABLE
 };
 
+enum qed_nvm_cmd {
+	QED_PUT_FILE_BEGIN = DRV_MSG_CODE_NVM_PUT_FILE_BEGIN,
+	QED_PUT_FILE_DATA = DRV_MSG_CODE_NVM_PUT_FILE_DATA,
+	QED_NVM_WRITE_NVRAM = DRV_MSG_CODE_NVM_WRITE_NVRAM,
+	QED_GET_MCP_NVM_RESP = 0xFFFFFF00
+};
+
 struct qed_eth_cb_ops;
 struct qed_dev_info;
 union qed_mcp_protocol_stats;

drivers/net/ethernet/qlogic/qed/qed_hsi.h

@@ -12268,8 +12268,11 @@ struct public_drv_mb {
 #define DRV_MSG_CODE_VF_DISABLED_DONE		0xc0000000
 #define DRV_MSG_CODE_CFG_VF_MSIX		0xc0010000
 #define DRV_MSG_CODE_CFG_PF_VFS_MSIX		0xc0020000
+#define DRV_MSG_CODE_NVM_PUT_FILE_BEGIN		0x00010000
+#define DRV_MSG_CODE_NVM_PUT_FILE_DATA		0x00020000
 #define DRV_MSG_CODE_NVM_GET_FILE_ATT		0x00030000
 #define DRV_MSG_CODE_NVM_READ_NVRAM		0x00050000
+#define DRV_MSG_CODE_NVM_WRITE_NVRAM		0x00060000
 #define DRV_MSG_CODE_MCP_RESET			0x00090000
 #define DRV_MSG_CODE_SET_VERSION		0x000f0000
 #define DRV_MSG_CODE_MCP_HALT                   0x00100000
@@ -12323,7 +12326,6 @@ struct public_drv_mb {
 
 #define DRV_MSG_CODE_FEATURE_SUPPORT		0x00300000
 #define DRV_MSG_CODE_GET_MFW_FEATURE_SUPPORT	0x00310000
-
 #define DRV_MSG_SEQ_NUMBER_MASK			0x0000ffff
 
 	u32 drv_mb_param;
@@ -12435,7 +12437,10 @@ struct public_drv_mb {
 #define FW_MSG_CODE_DRV_CFG_VF_MSIX_DONE	0xb0010000
 
 #define FW_MSG_CODE_NVM_OK			0x00010000
+#define FW_MSG_CODE_NVM_PUT_FILE_FINISH_OK	0x00400000
+#define FW_MSG_CODE_PHY_OK			0x00110000
 #define FW_MSG_CODE_OK				0x00160000
+#define FW_MSG_CODE_ERROR			0x00170000
 
 #define FW_MSG_CODE_OS_WOL_SUPPORTED            0x00800000
 #define FW_MSG_CODE_OS_WOL_NOT_SUPPORTED        0x00810000

drivers/net/ethernet/qlogic/qed/qed_mcp.c

@@ -569,6 +569,31 @@ int qed_mcp_cmd(struct qed_hwfn *p_hwfn,
 	return 0;
 }
 
+int qed_mcp_nvm_wr_cmd(struct qed_hwfn *p_hwfn,
+		       struct qed_ptt *p_ptt,
+		       u32 cmd,
+		       u32 param,
+		       u32 *o_mcp_resp,
+		       u32 *o_mcp_param, u32 i_txn_size, u32 *i_buf)
+{
+	struct qed_mcp_mb_params mb_params;
+	int rc;
+
+	memset(&mb_params, 0, sizeof(mb_params));
+	mb_params.cmd = cmd;
+	mb_params.param = param;
+	mb_params.p_data_src = i_buf;
+	mb_params.data_src_size = (u8)i_txn_size;
+	rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
+	if (rc)
+		return rc;
+
+	*o_mcp_resp = mb_params.mcp_resp;
+	*o_mcp_param = mb_params.mcp_param;
+
+	return 0;
+}
+
 int qed_mcp_nvm_rd_cmd(struct qed_hwfn *p_hwfn,
 		       struct qed_ptt *p_ptt,
 		       u32 cmd,
@@ -2261,6 +2286,102 @@ int qed_mcp_nvm_read(struct qed_dev *cdev, u32 addr, u8 *p_buf, u32 len)
 	return rc;
 }
 
+int qed_mcp_nvm_resp(struct qed_dev *cdev, u8 *p_buf)
+{
+	struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
+	struct qed_ptt *p_ptt;
+
+	p_ptt = qed_ptt_acquire(p_hwfn);
+	if (!p_ptt)
+		return -EBUSY;
+
+	memcpy(p_buf, &cdev->mcp_nvm_resp, sizeof(cdev->mcp_nvm_resp));
+	qed_ptt_release(p_hwfn, p_ptt);
+
+	return 0;
+}
+
+int qed_mcp_nvm_put_file_begin(struct qed_dev *cdev, u32 addr)
+{
+	struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
+	struct qed_ptt *p_ptt;
+	u32 resp, param;
+	int rc;
+
+	p_ptt = qed_ptt_acquire(p_hwfn);
+	if (!p_ptt)
+		return -EBUSY;
+	rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_NVM_PUT_FILE_BEGIN, addr,
+			 &resp, &param);
+	cdev->mcp_nvm_resp = resp;
+	qed_ptt_release(p_hwfn, p_ptt);
+
+	return rc;
+}
+
+int qed_mcp_nvm_write(struct qed_dev *cdev,
+		      u32 cmd, u32 addr, u8 *p_buf, u32 len)
+{
+	u32 buf_idx = 0, buf_size, nvm_cmd, nvm_offset, resp = 0, param;
+	struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
+	struct qed_ptt *p_ptt;
+	int rc = -EINVAL;
+
+	p_ptt = qed_ptt_acquire(p_hwfn);
+	if (!p_ptt)
+		return -EBUSY;
+
+	switch (cmd) {
+	case QED_PUT_FILE_DATA:
+		nvm_cmd = DRV_MSG_CODE_NVM_PUT_FILE_DATA;
+		break;
+	case QED_NVM_WRITE_NVRAM:
+		nvm_cmd = DRV_MSG_CODE_NVM_WRITE_NVRAM;
+		break;
+	default:
+		DP_NOTICE(p_hwfn, "Invalid nvm write command 0x%x\n", cmd);
+		rc = -EINVAL;
+		goto out;
+	}
+
+	while (buf_idx < len) {
+		buf_size = min_t(u32, (len - buf_idx), MCP_DRV_NVM_BUF_LEN);
+		nvm_offset = ((buf_size << DRV_MB_PARAM_NVM_LEN_OFFSET) |
+			      addr) + buf_idx;
+		rc = qed_mcp_nvm_wr_cmd(p_hwfn, p_ptt, nvm_cmd, nvm_offset,
+					&resp, &param, buf_size,
+					(u32 *)&p_buf[buf_idx]);
+		if (rc) {
+			DP_NOTICE(cdev, "nvm write failed, rc = %d\n", rc);
+			resp = FW_MSG_CODE_ERROR;
+			break;
+		}
+
+		if (resp != FW_MSG_CODE_OK &&
+		    resp != FW_MSG_CODE_NVM_OK &&
+		    resp != FW_MSG_CODE_NVM_PUT_FILE_FINISH_OK) {
+			DP_NOTICE(cdev,
+				  "nvm write failed, resp = 0x%08x\n", resp);
+			rc = -EINVAL;
+			break;
+		}
+
+		/* This can be a lengthy process, and it's possible scheduler
+		 * isn't pre-emptable. Sleep a bit to prevent CPU hogging.
+		 */
+		if (buf_idx % 0x1000 > (buf_idx + buf_size) % 0x1000)
+			usleep_range(1000, 2000);
+
+		buf_idx += buf_size;
+	}
+
+	cdev->mcp_nvm_resp = resp;
+out:
+	qed_ptt_release(p_hwfn, p_ptt);
+
+	return rc;
+}
+
 int qed_mcp_bist_register_test(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 {
 	u32 drv_mb_param = 0, rsp, param;

drivers/net/ethernet/qlogic/qed/qed_mcp.h

@@ -443,6 +443,40 @@ int qed_mcp_set_led(struct qed_hwfn *p_hwfn,
  */
 int qed_mcp_nvm_read(struct qed_dev *cdev, u32 addr, u8 *p_buf, u32 len);
 
+/**
+ * @brief Write to nvm
+ *
+ *  @param cdev
+ *  @param addr - nvm offset
+ *  @param cmd - nvm command
+ *  @param p_buf - nvm write buffer
+ *  @param len - buffer len
+ *
+ * @return int - 0 - operation was successful.
+ */
+int qed_mcp_nvm_write(struct qed_dev *cdev,
+		      u32 cmd, u32 addr, u8 *p_buf, u32 len);
+
+/**
+ * @brief Put file begin
+ *
+ *  @param cdev
+ *  @param addr - nvm offset
+ *
+ * @return int - 0 - operation was successful.
+ */
+int qed_mcp_nvm_put_file_begin(struct qed_dev *cdev, u32 addr);
+
+/**
+ * @brief Check latest response
+ *
+ *  @param cdev
+ *  @param p_buf - nvm write buffer
+ *
+ * @return int - 0 - operation was successful.
+ */
+int qed_mcp_nvm_resp(struct qed_dev *cdev, u8 *p_buf);
+
 struct qed_nvm_image_att {
 	u32 start_addr;
 	u32 length;