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1// SPDX-License-Identifier: GPL-2.0-only2/*******************************************************************************3 This contains the functions to handle the pci driver.4 5 Copyright (C) 2011-2012 Vayavya Labs Pvt Ltd6 7 8 Author: Rayagond Kokatanur <rayagond@vayavyalabs.com>9 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>10*******************************************************************************/11 12#include <linux/clk-provider.h>13#include <linux/pci.h>14#include <linux/dmi.h>15 16#include "stmmac.h"17 18struct stmmac_pci_info {19 int (*setup)(struct pci_dev *pdev, struct plat_stmmacenet_data *plat);20};21 22static void common_default_data(struct plat_stmmacenet_data *plat)23{24 plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */25 plat->has_gmac = 1;26 plat->force_sf_dma_mode = 1;27 28 plat->mdio_bus_data->needs_reset = true;29 30 /* Set default value for multicast hash bins */31 plat->multicast_filter_bins = HASH_TABLE_SIZE;32 33 /* Set default value for unicast filter entries */34 plat->unicast_filter_entries = 1;35 36 /* Set the maxmtu to a default of JUMBO_LEN */37 plat->maxmtu = JUMBO_LEN;38 39 /* Set default number of RX and TX queues to use */40 plat->tx_queues_to_use = 1;41 plat->rx_queues_to_use = 1;42 43 /* Disable Priority config by default */44 plat->tx_queues_cfg[0].use_prio = false;45 plat->rx_queues_cfg[0].use_prio = false;46 47 /* Disable RX queues routing by default */48 plat->rx_queues_cfg[0].pkt_route = 0x0;49}50 51static int stmmac_default_data(struct pci_dev *pdev,52 struct plat_stmmacenet_data *plat)53{54 /* Set common default data first */55 common_default_data(plat);56 57 plat->bus_id = 1;58 plat->phy_addr = 0;59 plat->phy_interface = PHY_INTERFACE_MODE_GMII;60 61 plat->dma_cfg->pbl = 32;62 plat->dma_cfg->pblx8 = true;63 /* TODO: AXI */64 65 return 0;66}67 68static const struct stmmac_pci_info stmmac_pci_info = {69 .setup = stmmac_default_data,70};71 72static int snps_gmac5_default_data(struct pci_dev *pdev,73 struct plat_stmmacenet_data *plat)74{75 int i;76 77 plat->clk_csr = 5;78 plat->has_gmac4 = 1;79 plat->force_sf_dma_mode = 1;80 plat->flags |= STMMAC_FLAG_TSO_EN;81 plat->pmt = 1;82 83 /* Set default value for multicast hash bins */84 plat->multicast_filter_bins = HASH_TABLE_SIZE;85 86 /* Set default value for unicast filter entries */87 plat->unicast_filter_entries = 1;88 89 /* Set the maxmtu to a default of JUMBO_LEN */90 plat->maxmtu = JUMBO_LEN;91 92 /* Set default number of RX and TX queues to use */93 plat->tx_queues_to_use = 4;94 plat->rx_queues_to_use = 4;95 96 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WRR;97 for (i = 0; i < plat->tx_queues_to_use; i++) {98 plat->tx_queues_cfg[i].use_prio = false;99 plat->tx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;100 plat->tx_queues_cfg[i].weight = 25;101 if (i > 0)102 plat->tx_queues_cfg[i].tbs_en = 1;103 }104 105 plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP;106 for (i = 0; i < plat->rx_queues_to_use; i++) {107 plat->rx_queues_cfg[i].use_prio = false;108 plat->rx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;109 plat->rx_queues_cfg[i].pkt_route = 0x0;110 plat->rx_queues_cfg[i].chan = i;111 }112 113 plat->bus_id = 1;114 plat->phy_addr = -1;115 plat->phy_interface = PHY_INTERFACE_MODE_GMII;116 117 plat->dma_cfg->pbl = 32;118 plat->dma_cfg->pblx8 = true;119 120 /* Axi Configuration */121 plat->axi = devm_kzalloc(&pdev->dev, sizeof(*plat->axi), GFP_KERNEL);122 if (!plat->axi)123 return -ENOMEM;124 125 plat->axi->axi_wr_osr_lmt = 31;126 plat->axi->axi_rd_osr_lmt = 31;127 128 plat->axi->axi_fb = false;129 plat->axi->axi_blen[0] = 4;130 plat->axi->axi_blen[1] = 8;131 plat->axi->axi_blen[2] = 16;132 plat->axi->axi_blen[3] = 32;133 134 return 0;135}136 137static const struct stmmac_pci_info snps_gmac5_pci_info = {138 .setup = snps_gmac5_default_data,139};140 141/**142 * stmmac_pci_probe143 *144 * @pdev: pci device pointer145 * @id: pointer to table of device id/id's.146 *147 * Description: This probing function gets called for all PCI devices which148 * match the ID table and are not "owned" by other driver yet. This function149 * gets passed a "struct pci_dev *" for each device whose entry in the ID table150 * matches the device. The probe functions returns zero when the driver choose151 * to take "ownership" of the device or an error code(-ve no) otherwise.152 */153static int stmmac_pci_probe(struct pci_dev *pdev,154 const struct pci_device_id *id)155{156 struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data;157 struct plat_stmmacenet_data *plat;158 struct stmmac_resources res;159 int i;160 int ret;161 162 plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);163 if (!plat)164 return -ENOMEM;165 166 plat->mdio_bus_data = devm_kzalloc(&pdev->dev,167 sizeof(*plat->mdio_bus_data),168 GFP_KERNEL);169 if (!plat->mdio_bus_data)170 return -ENOMEM;171 172 plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),173 GFP_KERNEL);174 if (!plat->dma_cfg)175 return -ENOMEM;176 177 plat->safety_feat_cfg = devm_kzalloc(&pdev->dev,178 sizeof(*plat->safety_feat_cfg),179 GFP_KERNEL);180 if (!plat->safety_feat_cfg)181 return -ENOMEM;182 183 /* Enable pci device */184 ret = pcim_enable_device(pdev);185 if (ret) {186 dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",187 __func__);188 return ret;189 }190 191 /* Get the base address of device */192 for (i = 0; i < PCI_STD_NUM_BARS; i++) {193 if (pci_resource_len(pdev, i) == 0)194 continue;195 ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev));196 if (ret)197 return ret;198 break;199 }200 201 pci_set_master(pdev);202 203 ret = info->setup(pdev, plat);204 if (ret)205 return ret;206 207 memset(&res, 0, sizeof(res));208 res.addr = pcim_iomap_table(pdev)[i];209 res.wol_irq = pdev->irq;210 res.irq = pdev->irq;211 212 plat->safety_feat_cfg->tsoee = 1;213 plat->safety_feat_cfg->mrxpee = 1;214 plat->safety_feat_cfg->mestee = 1;215 plat->safety_feat_cfg->mrxee = 1;216 plat->safety_feat_cfg->mtxee = 1;217 plat->safety_feat_cfg->epsi = 1;218 plat->safety_feat_cfg->edpp = 1;219 plat->safety_feat_cfg->prtyen = 1;220 plat->safety_feat_cfg->tmouten = 1;221 222 return stmmac_dvr_probe(&pdev->dev, plat, &res);223}224 225/**226 * stmmac_pci_remove227 *228 * @pdev: platform device pointer229 * Description: this function calls the main to free the net resources230 * and releases the PCI resources.231 */232static void stmmac_pci_remove(struct pci_dev *pdev)233{234 int i;235 236 stmmac_dvr_remove(&pdev->dev);237 238 for (i = 0; i < PCI_STD_NUM_BARS; i++) {239 if (pci_resource_len(pdev, i) == 0)240 continue;241 pcim_iounmap_regions(pdev, BIT(i));242 break;243 }244}245 246static int __maybe_unused stmmac_pci_suspend(struct device *dev)247{248 struct pci_dev *pdev = to_pci_dev(dev);249 int ret;250 251 ret = stmmac_suspend(dev);252 if (ret)253 return ret;254 255 ret = pci_save_state(pdev);256 if (ret)257 return ret;258 259 pci_disable_device(pdev);260 pci_wake_from_d3(pdev, true);261 return 0;262}263 264static int __maybe_unused stmmac_pci_resume(struct device *dev)265{266 struct pci_dev *pdev = to_pci_dev(dev);267 int ret;268 269 pci_restore_state(pdev);270 pci_set_power_state(pdev, PCI_D0);271 272 ret = pci_enable_device(pdev);273 if (ret)274 return ret;275 276 pci_set_master(pdev);277 278 return stmmac_resume(dev);279}280 281static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume);282 283/* synthetic ID, no official vendor */284#define PCI_VENDOR_ID_STMMAC 0x0700285 286#define PCI_DEVICE_ID_STMMAC_STMMAC 0x1108287#define PCI_DEVICE_ID_SYNOPSYS_GMAC5_ID 0x7102288 289static const struct pci_device_id stmmac_id_table[] = {290 { PCI_DEVICE_DATA(STMMAC, STMMAC, &stmmac_pci_info) },291 { PCI_DEVICE_DATA(STMICRO, MAC, &stmmac_pci_info) },292 { PCI_DEVICE_DATA(SYNOPSYS, GMAC5_ID, &snps_gmac5_pci_info) },293 {}294};295 296MODULE_DEVICE_TABLE(pci, stmmac_id_table);297 298static struct pci_driver stmmac_pci_driver = {299 .name = STMMAC_RESOURCE_NAME,300 .id_table = stmmac_id_table,301 .probe = stmmac_pci_probe,302 .remove = stmmac_pci_remove,303 .driver = {304 .pm = &stmmac_pm_ops,305 },306};307 308module_pci_driver(stmmac_pci_driver);309 310MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver");311MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>");312MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");313MODULE_LICENSE("GPL");314