+static int
+qla83xx_iospace_config(struct qla_hw_data *ha)
+{
+ uint16_t msix;
+ int cpus;
+
+ if (pci_request_selected_regions(ha->pdev, ha->bars,
+ QLA2XXX_DRIVER_NAME)) {
+ ql_log_pci(ql_log_fatal, ha->pdev, 0x0117,
+ "Failed to reserve PIO/MMIO regions (%s), aborting.\n",
+ pci_name(ha->pdev));
+
+ goto iospace_error_exit;
+ }
+
+ /* Use MMIO operations for all accesses. */
+ if (!(pci_resource_flags(ha->pdev, 0) & IORESOURCE_MEM)) {
+ ql_log_pci(ql_log_warn, ha->pdev, 0x0118,
+ "Invalid pci I/O region size (%s).\n",
+ pci_name(ha->pdev));
+ goto iospace_error_exit;
+ }
+ if (pci_resource_len(ha->pdev, 0) < MIN_IOBASE_LEN) {
+ ql_log_pci(ql_log_warn, ha->pdev, 0x0119,
+ "Invalid PCI mem region size (%s), aborting\n",
+ pci_name(ha->pdev));
+ goto iospace_error_exit;
+ }
+
+ ha->iobase = ioremap(pci_resource_start(ha->pdev, 0), MIN_IOBASE_LEN);
+ if (!ha->iobase) {
+ ql_log_pci(ql_log_fatal, ha->pdev, 0x011a,
+ "Cannot remap MMIO (%s), aborting.\n",
+ pci_name(ha->pdev));
+ goto iospace_error_exit;
+ }
+
+ /* 64bit PCI BAR - BAR2 will correspoond to region 4 */
+ /* 83XX 26XX always use MQ type access for queues
+ * - mbar 2, a.k.a region 4 */
+ ha->max_req_queues = ha->max_rsp_queues = 1;
+ ha->mqiobase = ioremap(pci_resource_start(ha->pdev, 4),
+ pci_resource_len(ha->pdev, 4));
+
+ if (!ha->mqiobase) {
+ ql_log_pci(ql_log_fatal, ha->pdev, 0x011d,
+ "BAR2/region4 not enabled\n");
+ goto mqiobase_exit;
+ }
+
+ ha->msixbase = ioremap(pci_resource_start(ha->pdev, 2),
+ pci_resource_len(ha->pdev, 2));
+ if (ha->msixbase) {
+ /* Read MSIX vector size of the board */
+ pci_read_config_word(ha->pdev,
+ QLA_83XX_PCI_MSIX_CONTROL, &msix);
+ ha->msix_count = msix;
+ /* Max queues are bounded by available msix vectors */
+ /* queue 0 uses two msix vectors */
+ if (ql2xmultique_tag) {
+ cpus = num_online_cpus();
+ ha->max_rsp_queues = (ha->msix_count - 1 > cpus) ?
+ (cpus + 1) : (ha->msix_count - 1);
+ ha->max_req_queues = 2;
+ } else if (ql2xmaxqueues > 1) {
+ ha->max_req_queues = ql2xmaxqueues > QLA_MQ_SIZE ?
+ QLA_MQ_SIZE : ql2xmaxqueues;
+ ql_dbg_pci(ql_dbg_multiq, ha->pdev, 0xc00c,
+ "QoS mode set, max no of request queues:%d.\n",
+ ha->max_req_queues);
+ ql_dbg_pci(ql_dbg_init, ha->pdev, 0x011b,
+ "QoS mode set, max no of request queues:%d.\n",
+ ha->max_req_queues);
+ }
+ ql_log_pci(ql_log_info, ha->pdev, 0x011c,
+ "MSI-X vector count: %d.\n", msix);
+ } else
+ ql_log_pci(ql_log_info, ha->pdev, 0x011e,
+ "BAR 1 not enabled.\n");
+
+mqiobase_exit:
+ ha->msix_count = ha->max_rsp_queues + 1;
+ ql_dbg_pci(ql_dbg_init, ha->pdev, 0x011f,
+ "MSIX Count:%d.\n", ha->msix_count);
+ return 0;
+
+iospace_error_exit:
+ return -ENOMEM;
+}
+