VNIC: Adding support for Cavium ThunderX network controller

+config NET_VENDOR_CAVIUM

+config THUNDER_NIC_PF

+config THUNDER_NIC_VF

+config THUNDER_NIC_BGX

drivers/net/ethernet/cavium/thunder/nic_main.c new file +13 -0

+static int nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct device *dev = &pdev->dev;
+	struct net_device *netdev;
+	struct nicpf *nic;
+	int    err;
+
+	netdev = alloc_etherdev(sizeof(struct nicpf));
+	if (!netdev)
+		return -ENOMEM;
+
+	pci_set_drvdata(pdev, netdev);
+

drivers/net/ethernet/cavium/thunder/nic_main.c new file +40 -0

+	}
+
+	err = pci_request_regions(pdev, DRV_NAME);
+	if (err) {
+		dev_err(dev, "PCI request regions failed 0x%x\n", err);
+		goto err_disable_device;
+	}
+
+	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(48));
+	if (err) {
+		dev_err(dev, "Unable to get usable DMA configuration\n");
+		goto err_release_regions;
+	}
+
+	err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(48));
+	if (err) {
+		dev_err(dev, "unable to get 48-bit DMA for consistent allocations\n");
+		goto err_release_regions;
+	}
+
+	/* MAP PF's configuration registers */
+	nic->reg_base = (uint64_t)pci_ioremap_bar(pdev, PCI_CFG_REG_BAR_NUM);
+	if (!nic->reg_base) {
+		dev_err(dev, "Cannot map config register space, aborting\n");
+		err = -ENOMEM;
+		goto err_release_regions;
+	}
+	nic->node = NIC_NODE_ID(pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM));
+
+	/* By default set NIC in TNS bypass mode */
+	nic->flags &= ~NIC_TNS_ENABLED;
+	nic_set_lmac_vf_mapping(nic);
+
+	/* Initialize hardware */
+	nic_init_hw(nic);
+
+	/* Set RSS TBL size for each VF */
+	nic->rss_ind_tbl_size = max((NIC_RSSI_COUNT / nic->num_vf_en),
+				    NIC_MAX_RSS_IDR_TBL_SIZE);
+	nic->rss_ind_tbl_size = rounddown_pow_of_two(nic->rss_ind_tbl_size);

drivers/net/ethernet/cavium/thunder/thunder_bgx.c new file +10 -0

+		iounmap((void *)nic->reg_base);
+err_release_regions:
+	pci_release_regions(pdev);
+err_disable_device:
+	pci_disable_device(pdev);
+exit:
+	return err;
+}
 
 
+static int bgx_register_interrupts(struct bgx *bgx, uint8_t lmac)
+{

drivers/net/ethernet/cavium/thunder/thunder_bgx.c new file +22 -0

+	dev_err(&bgx->pdev->dev, "Request irq failed\n");
+	for (irq = 0; irq < bgx->num_vec; irq++) {
+		if (bgx->irq_allocated[irq])
+			free_irq(bgx->msix_entries[irq].vector, bgx);
+		bgx->irq_allocated[irq] = 0;
+	}
+	return 1;
+}
+
+static void bgx_unregister_interrupts(struct bgx *bgx)
+{
+	int irq;
+	/* Free registered interrupts */
+	for (irq = 0; irq < bgx->num_vec; irq++) {
+		if (bgx->irq_allocated[irq])
+			free_irq(bgx->msix_entries[irq].vector, bgx);
+		bgx->irq_allocated[irq] = 0;
+	}
+	/* Disable MSI-X */
+	bgx_disable_msix(bgx);
+}
+

drivers/net/ethernet/cavium/thunder/thunder_bgx.c new file +4 -0

+
+	/* Add broadcast MAC into all LMAC's DMAC filters */
+	for (lmac = 0; lmac < bgx->lmac_count; lmac++)
+		bgx_add_dmac_addr(dmac_bcast, 0, bgx->bgx_id, lmac);

drivers/net/ethernet/cavium/thunder/thunder_bgx.c new file +15 -0

+	}
+
+	err = pci_request_regions(pdev, DRV_NAME);
+	if (err) {
+		dev_err(dev, "PCI request regions failed 0x%x\n", err);
+		goto err_disable_device;
+	}
+
+	/* MAP configuration registers */
+	bgx->reg_base = (uint64_t)pci_ioremap_bar(pdev, PCI_CFG_REG_BAR_NUM);
+	if (!bgx->reg_base) {
+		dev_err(dev, "BGX: Cannot map CSR memory space, aborting\n");
+		err = -ENOMEM;
+		goto err_release_regions;
+	}

drivers/net/ethernet/cavium/thunder/thunder_bgx.c new file +9 -0

+	if (bgx->reg_base)
+		iounmap((void *)bgx->reg_base);
+err_release_regions:
+	pci_release_regions(pdev);
+err_disable_device:
+	pci_disable_device(pdev);
+exit:
+	return err;
+}