[SCSI] qla2xxx: Add flash burst-read/write support.

Newer ISPs support a mechanism to read and write flash-memory via
the firmware LOAD/DUMP memory mailbox command routines.  When
supported, utilizing these mechanisms significantly reduces
overall access times.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index d3746ec80a85..e4f4b1fc2b29 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -2980,3 +2980,51 @@ qla2x00_send_change_request(scsi_qla_host_t *ha, uint16_t format,
 
         return rval;
 }
+
+int
+qla2x00_dump_ram(scsi_qla_host_t *ha, dma_addr_t req_dma, uint32_t addr,
+    uint32_t size)
+{
+        int rval;
+        mbx_cmd_t mc;
+        mbx_cmd_t *mcp = &mc;
+
+        DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
+
+        if (MSW(addr) || IS_FWI2_CAPABLE(ha)) {
+                mcp->mb[0] = MBC_DUMP_RISC_RAM_EXTENDED;
+                mcp->mb[8] = MSW(addr);
+                mcp->out_mb = MBX_8|MBX_0;
+        } else {
+                mcp->mb[0] = MBC_DUMP_RISC_RAM;
+                mcp->out_mb = MBX_0;
+        }
+        mcp->mb[1] = LSW(addr);
+        mcp->mb[2] = MSW(req_dma);
+        mcp->mb[3] = LSW(req_dma);
+        mcp->mb[6] = MSW(MSD(req_dma));
+        mcp->mb[7] = LSW(MSD(req_dma));
+        mcp->out_mb |= MBX_7|MBX_6|MBX_3|MBX_2|MBX_1;
+        if (IS_FWI2_CAPABLE(ha)) {
+                mcp->mb[4] = MSW(size);
+                mcp->mb[5] = LSW(size);
+                mcp->out_mb |= MBX_5|MBX_4;
+        } else {
+                mcp->mb[4] = LSW(size);
+                mcp->out_mb |= MBX_4;
+        }
+
+        mcp->in_mb = MBX_0;
+        mcp->tov = 30;
+        mcp->flags = 0;
+        rval = qla2x00_mailbox_command(ha, mcp);
+
+        if (rval != QLA_SUCCESS) {
+                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x.\n", __func__,
+                    ha->host_no, rval, mcp->mb[0]));
+        } else {
+                DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
+        }
+
+        return rval;
+}