qed: Add support for MBI upgrade over MFW.

The patch adds driver support for MBI image update through MFW.
Signed-off-by: NSudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: NAriel Elior <Ariel.Elior@cavium.com>
Signed-off-by: NMichal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -12655,6 +12655,7 @@ struct public_drv_mb {
 #define DRV_MB_PARAM_DCBX_NOTIFY_MASK		0x000000FF
 #define DRV_MB_PARAM_DCBX_NOTIFY_SHIFT		3
 
+#define DRV_MB_PARAM_NVM_PUT_FILE_BEGIN_MBI     0x3
 #define DRV_MB_PARAM_NVM_LEN_OFFSET		24
 
 #define DRV_MB_PARAM_CFG_VF_MSIX_VF_ID_SHIFT	0
@@ -12814,6 +12815,11 @@ struct public_drv_mb {
 	union drv_union_data union_data;
 };
 
+#define FW_MB_PARAM_NVM_PUT_FILE_REQ_OFFSET_MASK	0x00ffffff
+#define FW_MB_PARAM_NVM_PUT_FILE_REQ_OFFSET_SHIFT	0
+#define FW_MB_PARAM_NVM_PUT_FILE_REQ_SIZE_MASK		0xff000000
+#define FW_MB_PARAM_NVM_PUT_FILE_REQ_SIZE_SHIFT		24
+
 enum MFW_DRV_MSG_TYPE {
 	MFW_DRV_MSG_LINK_CHANGE,
 	MFW_DRV_MSG_FLR_FW_ACK_FAILED,

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

@@ -1939,21 +1939,30 @@ static int qed_nvm_flash_image_access(struct qed_dev *cdev, const u8 **data,
  * 0B  |                       0x3 [command index]                            |
  * 4B  | b'0: check_response?   | b'1-31  reserved                            |
  * 8B  | File-type |                   reserved                               |
+ * 12B |                    Image length in bytes                             |
  *     \----------------------------------------------------------------------/
  *     Start a new file of the provided type
  */
 static int qed_nvm_flash_image_file_start(struct qed_dev *cdev,
 					  const u8 **data, bool *check_resp)
 {
+	u32 file_type, file_size = 0;
 	int rc;
 
 	*data += 4;
 	*check_resp = !!(**data & BIT(0));
 	*data += 4;
+	file_type = **data;
 
 	DP_VERBOSE(cdev, NETIF_MSG_DRV,
-		   "About to start a new file of type %02x\n", **data);
-	rc = qed_mcp_nvm_put_file_begin(cdev, **data);
+		   "About to start a new file of type %02x\n", file_type);
+	if (file_type == DRV_MB_PARAM_NVM_PUT_FILE_BEGIN_MBI) {
+		*data += 4;
+		file_size = *((u32 *)(*data));
+	}
+
+	rc = qed_mcp_nvm_write(cdev, QED_PUT_FILE_BEGIN, file_type,
+			       (u8 *)(&file_size), 4);
 	*data += 4;
 
 	return rc;

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

@@ -2745,24 +2745,6 @@ int qed_mcp_nvm_resp(struct qed_dev *cdev, u8 *p_buf)
 	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)
 {
@@ -2776,6 +2758,9 @@ int qed_mcp_nvm_write(struct qed_dev *cdev,
 		return -EBUSY;
 
 	switch (cmd) {
+	case QED_PUT_FILE_BEGIN:
+		nvm_cmd = DRV_MSG_CODE_NVM_PUT_FILE_BEGIN;
+		break;
 	case QED_PUT_FILE_DATA:
 		nvm_cmd = DRV_MSG_CODE_NVM_PUT_FILE_DATA;
 		break;
@@ -2788,10 +2773,14 @@ int qed_mcp_nvm_write(struct qed_dev *cdev,
 		goto out;
 	}
 
+	buf_size = min_t(u32, (len - buf_idx), MCP_DRV_NVM_BUF_LEN);
 	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;
+		if (cmd == QED_PUT_FILE_BEGIN)
+			nvm_offset = addr;
+		else
+			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]);
@@ -2816,7 +2805,19 @@ int qed_mcp_nvm_write(struct qed_dev *cdev,
 		if (buf_idx % 0x1000 > (buf_idx + buf_size) % 0x1000)
 			usleep_range(1000, 2000);
 
-		buf_idx += buf_size;
+		/* For MBI upgrade, MFW response includes the next buffer offset
+		 * to be delivered to MFW.
+		 */
+		if (param && cmd == QED_PUT_FILE_DATA) {
+			buf_idx = QED_MFW_GET_FIELD(param,
+					FW_MB_PARAM_NVM_PUT_FILE_REQ_OFFSET);
+			buf_size = QED_MFW_GET_FIELD(param,
+					 FW_MB_PARAM_NVM_PUT_FILE_REQ_SIZE);
+		} else {
+			buf_idx += buf_size;
+			buf_size = min_t(u32, (len - buf_idx),
+					 MCP_DRV_NVM_BUF_LEN);
+		}
 	}
 
 	cdev->mcp_nvm_resp = resp;

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

@@ -542,16 +542,6 @@ int qed_mcp_nvm_read(struct qed_dev *cdev, u32 addr, u8 *p_buf, u32 len);
 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
  *