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path: root/drivers/scsi/qla2xxx/qla_mbx.c
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Diffstat (limited to 'drivers/scsi/qla2xxx/qla_mbx.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_mbx.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index d6cb3bd1a29a..39ddd38e7475 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -2460,3 +2460,45 @@ qla2x00_stop_firmware(scsi_qla_host_t *ha)
return rval;
}
+
+int
+qla2x00_trace_control(scsi_qla_host_t *ha, uint16_t ctrl, dma_addr_t eft_dma,
+ uint16_t buffers)
+{
+ int rval;
+ mbx_cmd_t mc;
+ mbx_cmd_t *mcp = &mc;
+
+ if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha))
+ return QLA_FUNCTION_FAILED;
+
+ DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
+
+ mcp->mb[0] = MBC_TRACE_CONTROL;
+ mcp->mb[1] = ctrl;
+ mcp->out_mb = MBX_1|MBX_0;
+ mcp->in_mb = MBX_1|MBX_0;
+ if (ctrl == TC_ENABLE) {
+ mcp->mb[2] = LSW(eft_dma);
+ mcp->mb[3] = MSW(eft_dma);
+ mcp->mb[4] = LSW(MSD(eft_dma));
+ mcp->mb[5] = MSW(MSD(eft_dma));
+ mcp->mb[6] = buffers;
+ mcp->mb[7] = buffers;
+ mcp->out_mb |= MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2;
+ }
+ 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 mb[1]=%x.\n",
+ __func__, ha->host_no, rval, mcp->mb[0], mcp->mb[1]));
+ } else {
+ DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
+ }
+
+ return rval;
+}
+
+