1 // SPDX-License-Identifier: GPL-2.0-only 2 /******************************************************************************* 3 This contains the functions to handle the pci driver. 4 5 Copyright (C) 2011-2012 Vayavya Labs Pvt Ltd 6 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 18 struct stmmac_pci_info { 19 int (*setup)(struct pci_dev *pdev, struct plat_stmmacenet_data *plat); 20 }; 21 22 static 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 51 static 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 68 static const struct stmmac_pci_info stmmac_pci_info = { 69 .setup = stmmac_default_data, 70 }; 71 72 static 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 } 136 137 static const struct stmmac_pci_info snps_gmac5_pci_info = { 138 .setup = snps_gmac5_default_data, 139 }; 140 141 static int stmmac_pci_suspend(struct device *dev, void *bsp_priv) 142 { 143 struct pci_dev *pdev = to_pci_dev(dev); 144 int ret; 145 146 ret = pci_save_state(pdev); 147 if (ret) 148 return ret; 149 150 pci_disable_device(pdev); 151 pci_wake_from_d3(pdev, true); 152 return 0; 153 } 154 155 static int stmmac_pci_resume(struct device *dev, void *bsp_priv) 156 { 157 struct pci_dev *pdev = to_pci_dev(dev); 158 int ret; 159 160 pci_restore_state(pdev); 161 pci_set_power_state(pdev, PCI_D0); 162 163 ret = pci_enable_device(pdev); 164 if (ret) 165 return ret; 166 167 pci_set_master(pdev); 168 169 return 0; 170 } 171 172 /** 173 * stmmac_pci_probe 174 * 175 * @pdev: pci device pointer 176 * @id: pointer to table of device id/id's. 177 * 178 * Description: This probing function gets called for all PCI devices which 179 * match the ID table and are not "owned" by other driver yet. This function 180 * gets passed a "struct pci_dev *" for each device whose entry in the ID table 181 * matches the device. The probe functions returns zero when the driver choose 182 * to take "ownership" of the device or an error code(-ve no) otherwise. 183 */ 184 static int stmmac_pci_probe(struct pci_dev *pdev, 185 const struct pci_device_id *id) 186 { 187 struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data; 188 struct plat_stmmacenet_data *plat; 189 struct stmmac_resources res = {}; 190 int ret; 191 int i; 192 193 plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL); 194 if (!plat) 195 return -ENOMEM; 196 197 plat->mdio_bus_data = devm_kzalloc(&pdev->dev, 198 sizeof(*plat->mdio_bus_data), 199 GFP_KERNEL); 200 if (!plat->mdio_bus_data) 201 return -ENOMEM; 202 203 plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg), 204 GFP_KERNEL); 205 if (!plat->dma_cfg) 206 return -ENOMEM; 207 208 plat->safety_feat_cfg = devm_kzalloc(&pdev->dev, 209 sizeof(*plat->safety_feat_cfg), 210 GFP_KERNEL); 211 if (!plat->safety_feat_cfg) 212 return -ENOMEM; 213 214 /* Enable pci device */ 215 ret = pcim_enable_device(pdev); 216 if (ret) { 217 dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n", 218 __func__); 219 return ret; 220 } 221 222 /* Get the base address of device */ 223 for (i = 0; i < PCI_STD_NUM_BARS; i++) { 224 if (pci_resource_len(pdev, i) == 0) 225 continue; 226 res.addr = pcim_iomap_region(pdev, i, STMMAC_RESOURCE_NAME); 227 if (IS_ERR(res.addr)) 228 return PTR_ERR(res.addr); 229 break; 230 } 231 232 pci_set_master(pdev); 233 234 ret = info->setup(pdev, plat); 235 if (ret) 236 return ret; 237 238 res.wol_irq = pdev->irq; 239 res.irq = pdev->irq; 240 241 plat->safety_feat_cfg->tsoee = 1; 242 plat->safety_feat_cfg->mrxpee = 1; 243 plat->safety_feat_cfg->mestee = 1; 244 plat->safety_feat_cfg->mrxee = 1; 245 plat->safety_feat_cfg->mtxee = 1; 246 plat->safety_feat_cfg->epsi = 1; 247 plat->safety_feat_cfg->edpp = 1; 248 plat->safety_feat_cfg->prtyen = 1; 249 plat->safety_feat_cfg->tmouten = 1; 250 251 plat->suspend = stmmac_pci_suspend; 252 plat->resume = stmmac_pci_resume; 253 254 return stmmac_dvr_probe(&pdev->dev, plat, &res); 255 } 256 257 /** 258 * stmmac_pci_remove 259 * 260 * @pdev: platform device pointer 261 * Description: this function calls the main to free the net resources. 262 */ 263 static void stmmac_pci_remove(struct pci_dev *pdev) 264 { 265 stmmac_dvr_remove(&pdev->dev); 266 } 267 268 /* synthetic ID, no official vendor */ 269 #define PCI_VENDOR_ID_STMMAC 0x0700 270 271 #define PCI_DEVICE_ID_STMMAC_STMMAC 0x1108 272 #define PCI_DEVICE_ID_SYNOPSYS_GMAC5_ID 0x7102 273 274 static const struct pci_device_id stmmac_id_table[] = { 275 { PCI_DEVICE_DATA(STMMAC, STMMAC, &stmmac_pci_info) }, 276 { PCI_DEVICE_DATA(STMICRO, MAC, &stmmac_pci_info) }, 277 { PCI_DEVICE_DATA(SYNOPSYS, GMAC5_ID, &snps_gmac5_pci_info) }, 278 {} 279 }; 280 281 MODULE_DEVICE_TABLE(pci, stmmac_id_table); 282 283 static struct pci_driver stmmac_pci_driver = { 284 .name = STMMAC_RESOURCE_NAME, 285 .id_table = stmmac_id_table, 286 .probe = stmmac_pci_probe, 287 .remove = stmmac_pci_remove, 288 .driver = { 289 .pm = &stmmac_simple_pm_ops, 290 }, 291 }; 292 293 module_pci_driver(stmmac_pci_driver); 294 295 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver"); 296 MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>"); 297 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); 298 MODULE_LICENSE("GPL"); 299