qlge: Clean up firmware reset path.

Add function for performing the reset rather than in-line. This function
may later be called by a core dump process.
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/qlge/qlge_mpi.c

 #include "qlge.h"
 
-static int ql_read_mbox_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
+int ql_read_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
 {
 	int status;
 	/* wait for reg to come ready */
@@ -19,6 +19,32 @@ static int ql_read_mbox_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
 	return status;
 }
 
+int ql_write_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 data)
+{
+	int status = 0;
+	/* wait for reg to come ready */
+	status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
+	if (status)
+		goto exit;
+	/* write the data to the data reg */
+	ql_write32(qdev, PROC_DATA, data);
+	/* trigger the write */
+	ql_write32(qdev, PROC_ADDR, reg);
+	/* wait for reg to come ready */
+	status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
+	if (status)
+		goto exit;
+exit:
+	return status;
+}
+
+int ql_soft_reset_mpi_risc(struct ql_adapter *qdev)
+{
+	int status;
+	status = ql_write_mpi_reg(qdev, 0x00001010, 1);
+	return status;
+}
+
 static int ql_get_mb_sts(struct ql_adapter *qdev, struct mbox_params *mbcp)
 {
 	int i, status;
@@ -28,7 +54,7 @@ static int ql_get_mb_sts(struct ql_adapter *qdev, struct mbox_params *mbcp)
 		return -EBUSY;
 	for (i = 0; i < mbcp->out_count; i++) {
 		status =
-		    ql_read_mbox_reg(qdev, qdev->mailbox_out + i,
+		    ql_read_mpi_reg(qdev, qdev->mailbox_out + i,
 				     &mbcp->mbox_out[i]);
 		if (status) {
 			QPRINTK(qdev, DRV, ERR, "Failed mailbox read.\n");
@@ -142,9 +168,5 @@ void ql_mpi_reset_work(struct work_struct *work)
 {
 	struct ql_adapter *qdev =
 	    container_of(work, struct ql_adapter, mpi_reset_work.work);
-	QPRINTK(qdev, DRV, ERR,
-		"Enter, qdev = %p..\n", qdev);
-	ql_write32(qdev, CSR, CSR_CMD_SET_RST);
-	msleep(50);
-	ql_write32(qdev, CSR, CSR_CMD_CLR_RST);
+	ql_soft_reset_mpi_risc(qdev);
 }