[SCSI] qla2xxx: Add iIDMA support.
iIDMA (Intelligent Interleaved Direct Memory Access) allows for
the HBA hardware to send FC frames at the rate at which they can
be received by a target device. By taking advantage of the
higher link rate, the HBA can maximize bandwidth utilization in a
heterogeneous multi-speed SAN.
Within a fabric topology, port speed detection is done via a Name
Server command (GFPN_ID) followed by a Fabric Management command
(GPSC). In an FCAL/N2N topology, port speed is based on the HBA
link-rate.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 879f281..4cde76c 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -2540,3 +2540,89 @@
return rval;
}
+
+int
+qla2x00_get_idma_speed(scsi_qla_host_t *ha, uint16_t loop_id,
+ uint16_t *port_speed, uint16_t *mb)
+{
+ int rval;
+ mbx_cmd_t mc;
+ mbx_cmd_t *mcp = &mc;
+
+ if (!IS_QLA24XX(ha))
+ return QLA_FUNCTION_FAILED;
+
+ DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
+
+ mcp->mb[0] = MBC_PORT_PARAMS;
+ mcp->mb[1] = loop_id;
+ mcp->mb[2] = mcp->mb[3] = mcp->mb[4] = mcp->mb[5] = 0;
+ mcp->out_mb = MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
+ mcp->in_mb = MBX_5|MBX_4|MBX_3|MBX_1|MBX_0;
+ mcp->tov = 30;
+ mcp->flags = 0;
+ rval = qla2x00_mailbox_command(ha, mcp);
+
+ /* Return mailbox statuses. */
+ if (mb != NULL) {
+ mb[0] = mcp->mb[0];
+ mb[1] = mcp->mb[1];
+ mb[3] = mcp->mb[3];
+ mb[4] = mcp->mb[4];
+ mb[5] = mcp->mb[5];
+ }
+
+ if (rval != QLA_SUCCESS) {
+ DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
+ ha->host_no, rval));
+ } else {
+ DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
+ if (port_speed)
+ *port_speed = mcp->mb[3];
+ }
+
+ return rval;
+}
+
+int
+qla2x00_set_idma_speed(scsi_qla_host_t *ha, uint16_t loop_id,
+ uint16_t port_speed, uint16_t *mb)
+{
+ int rval;
+ mbx_cmd_t mc;
+ mbx_cmd_t *mcp = &mc;
+
+ if (!IS_QLA24XX(ha))
+ return QLA_FUNCTION_FAILED;
+
+ DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
+
+ mcp->mb[0] = MBC_PORT_PARAMS;
+ mcp->mb[1] = loop_id;
+ mcp->mb[2] = BIT_0;
+ mcp->mb[3] = port_speed & (BIT_2|BIT_1|BIT_0);
+ mcp->mb[4] = mcp->mb[5] = 0;
+ mcp->out_mb = MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
+ mcp->in_mb = MBX_5|MBX_4|MBX_3|MBX_1|MBX_0;
+ mcp->tov = 30;
+ mcp->flags = 0;
+ rval = qla2x00_mailbox_command(ha, mcp);
+
+ /* Return mailbox statuses. */
+ if (mb != NULL) {
+ mb[0] = mcp->mb[0];
+ mb[1] = mcp->mb[1];
+ mb[3] = mcp->mb[3];
+ mb[4] = mcp->mb[4];
+ mb[5] = mcp->mb[5];
+ }
+
+ if (rval != QLA_SUCCESS) {
+ DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
+ ha->host_no, rval));
+ } else {
+ DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
+ }
+
+ return rval;
+}