// SPDX-License-Identifier: GPL-2.0-only /******************************************************************************* This contains the functions to handle the pci driver. Copyright (C) 2011-2012 Vayavya Labs Pvt Ltd Author: Rayagond Kokatanur Author: Giuseppe Cavallaro *******************************************************************************/ #include #include #include #include "stmmac.h" /* * This struct is used to associate PCI Function of MAC controller on a board, * discovered via DMI, with the address of PHY connected to the MAC. The * negative value of the address means that MAC controller is not connected * with PHY. */ struct stmmac_pci_func_data { unsigned int func; int phy_addr; }; struct stmmac_pci_dmi_data { const struct stmmac_pci_func_data *func; size_t nfuncs; }; struct stmmac_pci_info { int (*setup)(struct pci_dev *pdev, struct plat_stmmacenet_data *plat); }; static int stmmac_pci_find_phy_addr(struct pci_dev *pdev, const struct dmi_system_id *dmi_list) { const struct stmmac_pci_func_data *func_data; const struct stmmac_pci_dmi_data *dmi_data; const struct dmi_system_id *dmi_id; int func = PCI_FUNC(pdev->devfn); size_t n; dmi_id = dmi_first_match(dmi_list); if (!dmi_id) return -ENODEV; dmi_data = dmi_id->driver_data; func_data = dmi_data->func; for (n = 0; n < dmi_data->nfuncs; n++, func_data++) if (func_data->func == func) return func_data->phy_addr; return -ENODEV; } static void common_default_data(struct plat_stmmacenet_data *plat) { plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */ plat->has_gmac = 1; plat->force_sf_dma_mode = 1; plat->mdio_bus_data->needs_reset = true; plat->mdio_bus_data->phy_mask = 0; /* Set default value for multicast hash bins */ plat->multicast_filter_bins = HASH_TABLE_SIZE; /* Set default value for unicast filter entries */ plat->unicast_filter_entries = 1; /* Set the maxmtu to a default of JUMBO_LEN */ plat->maxmtu = JUMBO_LEN; /* Set default number of RX and TX queues to use */ plat->tx_queues_to_use = 1; plat->rx_queues_to_use = 1; /* Disable Priority config by default */ plat->tx_queues_cfg[0].use_prio = false; plat->rx_queues_cfg[0].use_prio = false; /* Disable RX queues routing by default */ plat->rx_queues_cfg[0].pkt_route = 0x0; } static int stmmac_default_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { /* Set common default data first */ common_default_data(plat); plat->bus_id = 1; plat->phy_addr = 0; plat->interface = PHY_INTERFACE_MODE_GMII; plat->dma_cfg->pbl = 32; plat->dma_cfg->pblx8 = true; /* TODO: AXI */ return 0; } static const struct stmmac_pci_info stmmac_pci_info = { .setup = stmmac_default_data, }; static int intel_mgbe_common_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { int i; plat->clk_csr = 5; plat->has_gmac = 0; plat->has_gmac4 = 1; plat->force_sf_dma_mode = 0; plat->tso_en = 1; plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP; for (i = 0; i < plat->rx_queues_to_use; i++) { plat->rx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB; plat->rx_queues_cfg[i].chan = i; /* Disable Priority config by default */ plat->rx_queues_cfg[i].use_prio = false; /* Disable RX queues routing by default */ plat->rx_queues_cfg[i].pkt_route = 0x0; } for (i = 0; i < plat->tx_queues_to_use; i++) { plat->tx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB; /* Disable Priority config by default */ plat->tx_queues_cfg[i].use_prio = false; } /* FIFO size is 4096 bytes for 1 tx/rx queue */ plat->tx_fifo_size = plat->tx_queues_to_use * 4096; plat->rx_fifo_size = plat->rx_queues_to_use * 4096; plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WRR; plat->tx_queues_cfg[0].weight = 0x09; plat->tx_queues_cfg[1].weight = 0x0A; plat->tx_queues_cfg[2].weight = 0x0B; plat->tx_queues_cfg[3].weight = 0x0C; plat->tx_queues_cfg[4].weight = 0x0D; plat->tx_queues_cfg[5].weight = 0x0E; plat->tx_queues_cfg[6].weight = 0x0F; plat->tx_queues_cfg[7].weight = 0x10; plat->mdio_bus_data->phy_mask = 0; plat->dma_cfg->pbl = 32; plat->dma_cfg->pblx8 = true; plat->dma_cfg->fixed_burst = 0; plat->dma_cfg->mixed_burst = 0; plat->dma_cfg->aal = 0; plat->axi = devm_kzalloc(&pdev->dev, sizeof(*plat->axi), GFP_KERNEL); if (!plat->axi) return -ENOMEM; plat->axi->axi_lpi_en = 0; plat->axi->axi_xit_frm = 0; plat->axi->axi_wr_osr_lmt = 1; plat->axi->axi_rd_osr_lmt = 1; plat->axi->axi_blen[0] = 4; plat->axi->axi_blen[1] = 8; plat->axi->axi_blen[2] = 16; plat->ptp_max_adj = plat->clk_ptp_rate; /* Set system clock */ plat->stmmac_clk = clk_register_fixed_rate(&pdev->dev, "stmmac-clk", NULL, 0, plat->clk_ptp_rate); if (IS_ERR(plat->stmmac_clk)) { dev_warn(&pdev->dev, "Fail to register stmmac-clk\n"); plat->stmmac_clk = NULL; } clk_prepare_enable(plat->stmmac_clk); /* Set default value for multicast hash bins */ plat->multicast_filter_bins = HASH_TABLE_SIZE; /* Set default value for unicast filter entries */ plat->unicast_filter_entries = 1; /* Set the maxmtu to a default of JUMBO_LEN */ plat->maxmtu = JUMBO_LEN; return 0; } static int ehl_common_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { int ret; plat->rx_queues_to_use = 8; plat->tx_queues_to_use = 8; plat->clk_ptp_rate = 200000000; ret = intel_mgbe_common_data(pdev, plat); if (ret) return ret; return 0; } static int ehl_sgmii_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { plat->bus_id = 1; plat->phy_addr = 0; plat->interface = PHY_INTERFACE_MODE_SGMII; return ehl_common_data(pdev, plat); } static struct stmmac_pci_info ehl_sgmii1g_pci_info = { .setup = ehl_sgmii_data, }; static int ehl_rgmii_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { plat->bus_id = 1; plat->phy_addr = 0; plat->interface = PHY_INTERFACE_MODE_RGMII; return ehl_common_data(pdev, plat); } static struct stmmac_pci_info ehl_rgmii1g_pci_info = { .setup = ehl_rgmii_data, }; static int tgl_common_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { int ret; plat->rx_queues_to_use = 6; plat->tx_queues_to_use = 4; plat->clk_ptp_rate = 200000000; ret = intel_mgbe_common_data(pdev, plat); if (ret) return ret; return 0; } static int tgl_sgmii_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { plat->bus_id = 1; plat->phy_addr = 0; plat->interface = PHY_INTERFACE_MODE_SGMII; return tgl_common_data(pdev, plat); } static struct stmmac_pci_info tgl_sgmii1g_pci_info = { .setup = tgl_sgmii_data, }; static const struct stmmac_pci_func_data galileo_stmmac_func_data[] = { { .func = 6, .phy_addr = 1, }, }; static const struct stmmac_pci_dmi_data galileo_stmmac_dmi_data = { .func = galileo_stmmac_func_data, .nfuncs = ARRAY_SIZE(galileo_stmmac_func_data), }; static const struct stmmac_pci_func_data iot2040_stmmac_func_data[] = { { .func = 6, .phy_addr = 1, }, { .func = 7, .phy_addr = 1, }, }; static const struct stmmac_pci_dmi_data iot2040_stmmac_dmi_data = { .func = iot2040_stmmac_func_data, .nfuncs = ARRAY_SIZE(iot2040_stmmac_func_data), }; static const struct dmi_system_id quark_pci_dmi[] = { { .matches = { DMI_EXACT_MATCH(DMI_BOARD_NAME, "Galileo"), }, .driver_data = (void *)&galileo_stmmac_dmi_data, }, { .matches = { DMI_EXACT_MATCH(DMI_BOARD_NAME, "GalileoGen2"), }, .driver_data = (void *)&galileo_stmmac_dmi_data, }, /* * There are 2 types of SIMATIC IOT2000: IOT2020 and IOT2040. * The asset tag "6ES7647-0AA00-0YA2" is only for IOT2020 which * has only one pci network device while other asset tags are * for IOT2040 which has two. */ { .matches = { DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"), DMI_EXACT_MATCH(DMI_BOARD_ASSET_TAG, "6ES7647-0AA00-0YA2"), }, .driver_data = (void *)&galileo_stmmac_dmi_data, }, { .matches = { DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"), }, .driver_data = (void *)&iot2040_stmmac_dmi_data, }, {} }; static int quark_default_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { int ret; /* Set common default data first */ common_default_data(plat); /* * Refuse to load the driver and register net device if MAC controller * does not connect to any PHY interface. */ ret = stmmac_pci_find_phy_addr(pdev, quark_pci_dmi); if (ret < 0) { /* Return error to the caller on DMI enabled boards. */ if (dmi_get_system_info(DMI_BOARD_NAME)) return ret; /* * Galileo boards with old firmware don't support DMI. We always * use 1 here as PHY address, so at least the first found MAC * controller would be probed. */ ret = 1; } plat->bus_id = pci_dev_id(pdev); plat->phy_addr = ret; plat->interface = PHY_INTERFACE_MODE_RMII; plat->dma_cfg->pbl = 16; plat->dma_cfg->pblx8 = true; plat->dma_cfg->fixed_burst = 1; /* AXI (TODO) */ return 0; } static const struct stmmac_pci_info quark_pci_info = { .setup = quark_default_data, }; static int snps_gmac5_default_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { int i; plat->clk_csr = 5; plat->has_gmac4 = 1; plat->force_sf_dma_mode = 1; plat->tso_en = 1; plat->pmt = 1; plat->mdio_bus_data->phy_mask = 0; /* Set default value for multicast hash bins */ plat->multicast_filter_bins = HASH_TABLE_SIZE; /* Set default value for unicast filter entries */ plat->unicast_filter_entries = 1; /* Set the maxmtu to a default of JUMBO_LEN */ plat->maxmtu = JUMBO_LEN; /* Set default number of RX and TX queues to use */ plat->tx_queues_to_use = 4; plat->rx_queues_to_use = 4; plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WRR; for (i = 0; i < plat->tx_queues_to_use; i++) { plat->tx_queues_cfg[i].use_prio = false; plat->tx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB; plat->tx_queues_cfg[i].weight = 25; } plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP; for (i = 0; i < plat->rx_queues_to_use; i++) { plat->rx_queues_cfg[i].use_prio = false; plat->rx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB; plat->rx_queues_cfg[i].pkt_route = 0x0; plat->rx_queues_cfg[i].chan = i; } plat->bus_id = 1; plat->phy_addr = -1; plat->interface = PHY_INTERFACE_MODE_GMII; plat->dma_cfg->pbl = 32; plat->dma_cfg->pblx8 = true; /* Axi Configuration */ plat->axi = devm_kzalloc(&pdev->dev, sizeof(*plat->axi), GFP_KERNEL); if (!plat->axi) return -ENOMEM; plat->axi->axi_wr_osr_lmt = 31; plat->axi->axi_rd_osr_lmt = 31; plat->axi->axi_fb = false; plat->axi->axi_blen[0] = 4; plat->axi->axi_blen[1] = 8; plat->axi->axi_blen[2] = 16; plat->axi->axi_blen[3] = 32; return 0; } static const struct stmmac_pci_info snps_gmac5_pci_info = { .setup = snps_gmac5_default_data, }; /** * stmmac_pci_probe * * @pdev: pci device pointer * @id: pointer to table of device id/id's. * * Description: This probing function gets called for all PCI devices which * match the ID table and are not "owned" by other driver yet. This function * gets passed a "struct pci_dev *" for each device whose entry in the ID table * matches the device. The probe functions returns zero when the driver choose * to take "ownership" of the device or an error code(-ve no) otherwise. */ static int stmmac_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data; struct plat_stmmacenet_data *plat; struct stmmac_resources res; int i; int ret; plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL); if (!plat) return -ENOMEM; plat->mdio_bus_data = devm_kzalloc(&pdev->dev, sizeof(*plat->mdio_bus_data), GFP_KERNEL); if (!plat->mdio_bus_data) return -ENOMEM; plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg), GFP_KERNEL); if (!plat->dma_cfg) return -ENOMEM; /* Enable pci device */ ret = pci_enable_device(pdev); if (ret) { dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n", __func__); return ret; } /* Get the base address of device */ for (i = 0; i <= PCI_STD_RESOURCE_END; i++) { if (pci_resource_len(pdev, i) == 0) continue; ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev)); if (ret) return ret; break; } pci_set_master(pdev); ret = info->setup(pdev, plat); if (ret) return ret; pci_enable_msi(pdev); memset(&res, 0, sizeof(res)); res.addr = pcim_iomap_table(pdev)[i]; res.wol_irq = pdev->irq; res.irq = pdev->irq; return stmmac_dvr_probe(&pdev->dev, plat, &res); } /** * stmmac_pci_remove * * @pdev: platform device pointer * Description: this function calls the main to free the net resources * and releases the PCI resources. */ static void stmmac_pci_remove(struct pci_dev *pdev) { struct net_device *ndev = dev_get_drvdata(&pdev->dev); struct stmmac_priv *priv = netdev_priv(ndev); int i; stmmac_dvr_remove(&pdev->dev); if (priv->plat->stmmac_clk) clk_unregister_fixed_rate(priv->plat->stmmac_clk); for (i = 0; i <= PCI_STD_RESOURCE_END; i++) { if (pci_resource_len(pdev, i) == 0) continue; pcim_iounmap_regions(pdev, BIT(i)); break; } pci_disable_device(pdev); } static int __maybe_unused stmmac_pci_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); int ret; ret = stmmac_suspend(dev); if (ret) return ret; ret = pci_save_state(pdev); if (ret) return ret; pci_disable_device(pdev); pci_wake_from_d3(pdev, true); return 0; } static int __maybe_unused stmmac_pci_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); int ret; pci_restore_state(pdev); pci_set_power_state(pdev, PCI_D0); ret = pci_enable_device(pdev); if (ret) return ret; pci_set_master(pdev); return stmmac_resume(dev); } static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume); /* synthetic ID, no official vendor */ #define PCI_VENDOR_ID_STMMAC 0x700 #define STMMAC_QUARK_ID 0x0937 #define STMMAC_DEVICE_ID 0x1108 #define STMMAC_EHL_RGMII1G_ID 0x4b30 #define STMMAC_EHL_SGMII1G_ID 0x4b31 #define STMMAC_TGL_SGMII1G_ID 0xa0ac #define STMMAC_GMAC5_ID 0x7102 #define STMMAC_DEVICE(vendor_id, dev_id, info) { \ PCI_VDEVICE(vendor_id, dev_id), \ .driver_data = (kernel_ulong_t)&info \ } static const struct pci_device_id stmmac_id_table[] = { STMMAC_DEVICE(STMMAC, STMMAC_DEVICE_ID, stmmac_pci_info), STMMAC_DEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_MAC, stmmac_pci_info), STMMAC_DEVICE(INTEL, STMMAC_QUARK_ID, quark_pci_info), STMMAC_DEVICE(INTEL, STMMAC_EHL_RGMII1G_ID, ehl_rgmii1g_pci_info), STMMAC_DEVICE(INTEL, STMMAC_EHL_SGMII1G_ID, ehl_sgmii1g_pci_info), STMMAC_DEVICE(INTEL, STMMAC_TGL_SGMII1G_ID, tgl_sgmii1g_pci_info), STMMAC_DEVICE(SYNOPSYS, STMMAC_GMAC5_ID, snps_gmac5_pci_info), {} }; MODULE_DEVICE_TABLE(pci, stmmac_id_table); static struct pci_driver stmmac_pci_driver = { .name = STMMAC_RESOURCE_NAME, .id_table = stmmac_id_table, .probe = stmmac_pci_probe, .remove = stmmac_pci_remove, .driver = { .pm = &stmmac_pm_ops, }, }; module_pci_driver(stmmac_pci_driver); MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver"); MODULE_AUTHOR("Rayagond Kokatanur "); MODULE_AUTHOR("Giuseppe Cavallaro "); MODULE_LICENSE("GPL");