[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_gs.c b/drivers/scsi/qla2xxx/qla_gs.c
index 2ebf259..029953c 100644
--- a/drivers/scsi/qla2xxx/qla_gs.c
+++ b/drivers/scsi/qla2xxx/qla_gs.c
@@ -687,7 +687,6 @@
return (rval);
}
-
/**
* qla2x00_prep_sns_cmd() - Prepare common SNS command request fields for query.
* @ha: HA context
@@ -1647,3 +1646,189 @@
return rval;
}
+
+/**
+ * qla2x00_gfpn_id() - SNS Get Fabric Port Name (GFPN_ID) query.
+ * @ha: HA context
+ * @list: switch info entries to populate
+ *
+ * Returns 0 on success.
+ */
+int
+qla2x00_gfpn_id(scsi_qla_host_t *ha, sw_info_t *list)
+{
+ int rval;
+ uint16_t i;
+
+ ms_iocb_entry_t *ms_pkt;
+ struct ct_sns_req *ct_req;
+ struct ct_sns_rsp *ct_rsp;
+
+ if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha))
+ return QLA_FUNCTION_FAILED;
+
+ for (i = 0; i < MAX_FIBRE_DEVICES; i++) {
+ /* Issue GFPN_ID */
+ memset(list[i].fabric_port_name, 0, WWN_SIZE);
+
+ /* Prepare common MS IOCB */
+ ms_pkt = qla2x00_prep_ms_iocb(ha, GFPN_ID_REQ_SIZE,
+ GFPN_ID_RSP_SIZE);
+
+ /* Prepare CT request */
+ ct_req = qla2x00_prep_ct_req(&ha->ct_sns->p.req, GFPN_ID_CMD,
+ GFPN_ID_RSP_SIZE);
+ ct_rsp = &ha->ct_sns->p.rsp;
+
+ /* Prepare CT arguments -- port_id */
+ ct_req->req.port_id.port_id[0] = list[i].d_id.b.domain;
+ ct_req->req.port_id.port_id[1] = list[i].d_id.b.area;
+ ct_req->req.port_id.port_id[2] = list[i].d_id.b.al_pa;
+
+ /* Execute MS IOCB */
+ rval = qla2x00_issue_iocb(ha, ha->ms_iocb, ha->ms_iocb_dma,
+ sizeof(ms_iocb_entry_t));
+ if (rval != QLA_SUCCESS) {
+ /*EMPTY*/
+ DEBUG2_3(printk("scsi(%ld): GFPN_ID issue IOCB "
+ "failed (%d).\n", ha->host_no, rval));
+ } else if (qla2x00_chk_ms_status(ha, ms_pkt, ct_rsp,
+ "GFPN_ID") != QLA_SUCCESS) {
+ rval = QLA_FUNCTION_FAILED;
+ } else {
+ /* Save fabric portname */
+ memcpy(list[i].fabric_port_name,
+ ct_rsp->rsp.gfpn_id.port_name, WWN_SIZE);
+ }
+
+ /* Last device exit. */
+ if (list[i].d_id.b.rsvd_1 != 0)
+ break;
+ }
+
+ return (rval);
+}
+
+static inline void *
+qla24xx_prep_ms_fm_iocb(scsi_qla_host_t *ha, uint32_t req_size,
+ uint32_t rsp_size)
+{
+ struct ct_entry_24xx *ct_pkt;
+
+ ct_pkt = (struct ct_entry_24xx *)ha->ms_iocb;
+ memset(ct_pkt, 0, sizeof(struct ct_entry_24xx));
+
+ ct_pkt->entry_type = CT_IOCB_TYPE;
+ ct_pkt->entry_count = 1;
+ ct_pkt->nport_handle = cpu_to_le16(ha->mgmt_svr_loop_id);
+ ct_pkt->timeout = __constant_cpu_to_le16(59);
+ ct_pkt->cmd_dsd_count = __constant_cpu_to_le16(1);
+ ct_pkt->rsp_dsd_count = __constant_cpu_to_le16(1);
+ ct_pkt->rsp_byte_count = cpu_to_le32(rsp_size);
+ ct_pkt->cmd_byte_count = cpu_to_le32(req_size);
+
+ ct_pkt->dseg_0_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
+ ct_pkt->dseg_0_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
+ ct_pkt->dseg_0_len = ct_pkt->cmd_byte_count;
+
+ ct_pkt->dseg_1_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
+ ct_pkt->dseg_1_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
+ ct_pkt->dseg_1_len = ct_pkt->rsp_byte_count;
+
+ return ct_pkt;
+}
+
+
+static inline struct ct_sns_req *
+qla24xx_prep_ct_fm_req(struct ct_sns_req *ct_req, uint16_t cmd,
+ uint16_t rsp_size)
+{
+ memset(ct_req, 0, sizeof(struct ct_sns_pkt));
+
+ ct_req->header.revision = 0x01;
+ ct_req->header.gs_type = 0xFA;
+ ct_req->header.gs_subtype = 0x01;
+ ct_req->command = cpu_to_be16(cmd);
+ ct_req->max_rsp_size = cpu_to_be16((rsp_size - 16) / 4);
+
+ return ct_req;
+}
+
+/**
+ * qla2x00_gpsc() - FCS Get Port Speed Capabilities (GPSC) query.
+ * @ha: HA context
+ * @list: switch info entries to populate
+ *
+ * Returns 0 on success.
+ */
+int
+qla2x00_gpsc(scsi_qla_host_t *ha, sw_info_t *list)
+{
+ int rval;
+ uint16_t i;
+
+ ms_iocb_entry_t *ms_pkt;
+ struct ct_sns_req *ct_req;
+ struct ct_sns_rsp *ct_rsp;
+
+ if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha))
+ return QLA_FUNCTION_FAILED;
+
+ rval = qla2x00_mgmt_svr_login(ha);
+ if (rval)
+ return rval;
+
+ for (i = 0; i < MAX_FIBRE_DEVICES; i++) {
+ /* Issue GFPN_ID */
+ list[i].fp_speeds = list[i].fp_speed = 0;
+
+ /* Prepare common MS IOCB */
+ ms_pkt = qla24xx_prep_ms_fm_iocb(ha, GPSC_REQ_SIZE,
+ GPSC_RSP_SIZE);
+
+ /* Prepare CT request */
+ ct_req = qla24xx_prep_ct_fm_req(&ha->ct_sns->p.req,
+ GPSC_CMD, GPSC_RSP_SIZE);
+ ct_rsp = &ha->ct_sns->p.rsp;
+
+ /* Prepare CT arguments -- port_name */
+ memcpy(ct_req->req.gpsc.port_name, list[i].fabric_port_name,
+ WWN_SIZE);
+
+ /* Execute MS IOCB */
+ rval = qla2x00_issue_iocb(ha, ha->ms_iocb, ha->ms_iocb_dma,
+ sizeof(ms_iocb_entry_t));
+ if (rval != QLA_SUCCESS) {
+ /*EMPTY*/
+ DEBUG2_3(printk("scsi(%ld): GPSC issue IOCB "
+ "failed (%d).\n", ha->host_no, rval));
+ } else if (qla2x00_chk_ms_status(ha, ms_pkt, ct_rsp,
+ "GPSC") != QLA_SUCCESS) {
+ rval = QLA_FUNCTION_FAILED;
+ } else {
+ /* Save portname */
+ list[i].fp_speeds = ct_rsp->rsp.gpsc.speeds;
+ list[i].fp_speed = ct_rsp->rsp.gpsc.speed;
+
+ DEBUG2_3(printk("scsi(%ld): GPSC ext entry - "
+ "fpn %02x%02x%02x%02x%02x%02x%02x%02x speeds=%04x "
+ "speed=%04x.\n", ha->host_no,
+ list[i].fabric_port_name[0],
+ list[i].fabric_port_name[1],
+ list[i].fabric_port_name[2],
+ list[i].fabric_port_name[3],
+ list[i].fabric_port_name[4],
+ list[i].fabric_port_name[5],
+ list[i].fabric_port_name[6],
+ list[i].fabric_port_name[7],
+ be16_to_cpu(list[i].fp_speeds),
+ be16_to_cpu(list[i].fp_speed)));
+ }
+
+ /* Last device exit. */
+ if (list[i].d_id.b.rsvd_1 != 0)
+ break;
+ }
+
+ return (rval);
+}