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->tso_en = 1; 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 /** 142 * stmmac_pci_probe 143 * 144 * @pdev: pci device pointer 145 * @id: pointer to table of device id/id's. 146 * 147 * Description: This probing function gets called for all PCI devices which 148 * match the ID table and are not "owned" by other driver yet. This function 149 * gets passed a "struct pci_dev *" for each device whose entry in the ID table 150 * matches the device. The probe functions returns zero when the driver choose 151 * to take "ownership" of the device or an error code(-ve no) otherwise. 152 */ 153 static 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 /* Enable pci device */ 178 ret = pci_enable_device(pdev); 179 if (ret) { 180 dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n", 181 __func__); 182 return ret; 183 } 184 185 /* Get the base address of device */ 186 for (i = 0; i < PCI_STD_NUM_BARS; i++) { 187 if (pci_resource_len(pdev, i) == 0) 188 continue; 189 ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev)); 190 if (ret) 191 return ret; 192 break; 193 } 194 195 pci_set_master(pdev); 196 197 ret = info->setup(pdev, plat); 198 if (ret) 199 return ret; 200 201 pci_enable_msi(pdev); 202 203 memset(&res, 0, sizeof(res)); 204 res.addr = pcim_iomap_table(pdev)[i]; 205 res.wol_irq = pdev->irq; 206 res.irq = pdev->irq; 207 208 return stmmac_dvr_probe(&pdev->dev, plat, &res); 209 } 210 211 /** 212 * stmmac_pci_remove 213 * 214 * @pdev: platform device pointer 215 * Description: this function calls the main to free the net resources 216 * and releases the PCI resources. 217 */ 218 static void stmmac_pci_remove(struct pci_dev *pdev) 219 { 220 int i; 221 222 stmmac_dvr_remove(&pdev->dev); 223 224 for (i = 0; i < PCI_STD_NUM_BARS; i++) { 225 if (pci_resource_len(pdev, i) == 0) 226 continue; 227 pcim_iounmap_regions(pdev, BIT(i)); 228 break; 229 } 230 231 pci_disable_device(pdev); 232 } 233 234 static int __maybe_unused stmmac_pci_suspend(struct device *dev) 235 { 236 struct pci_dev *pdev = to_pci_dev(dev); 237 int ret; 238 239 ret = stmmac_suspend(dev); 240 if (ret) 241 return ret; 242 243 ret = pci_save_state(pdev); 244 if (ret) 245 return ret; 246 247 pci_disable_device(pdev); 248 pci_wake_from_d3(pdev, true); 249 return 0; 250 } 251 252 static int __maybe_unused stmmac_pci_resume(struct device *dev) 253 { 254 struct pci_dev *pdev = to_pci_dev(dev); 255 int ret; 256 257 pci_restore_state(pdev); 258 pci_set_power_state(pdev, PCI_D0); 259 260 ret = pci_enable_device(pdev); 261 if (ret) 262 return ret; 263 264 pci_set_master(pdev); 265 266 return stmmac_resume(dev); 267 } 268 269 static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume); 270 271 /* synthetic ID, no official vendor */ 272 #define PCI_VENDOR_ID_STMMAC 0x0700 273 274 #define PCI_DEVICE_ID_STMMAC_STMMAC 0x1108 275 #define PCI_DEVICE_ID_SYNOPSYS_GMAC5_ID 0x7102 276 277 static const struct pci_device_id stmmac_id_table[] = { 278 { PCI_DEVICE_DATA(STMMAC, STMMAC, &stmmac_pci_info) }, 279 { PCI_DEVICE_DATA(STMICRO, MAC, &stmmac_pci_info) }, 280 { PCI_DEVICE_DATA(SYNOPSYS, GMAC5_ID, &snps_gmac5_pci_info) }, 281 {} 282 }; 283 284 MODULE_DEVICE_TABLE(pci, stmmac_id_table); 285 286 static struct pci_driver stmmac_pci_driver = { 287 .name = STMMAC_RESOURCE_NAME, 288 .id_table = stmmac_id_table, 289 .probe = stmmac_pci_probe, 290 .remove = stmmac_pci_remove, 291 .driver = { 292 .pm = &stmmac_pm_ops, 293 }, 294 }; 295 296 module_pci_driver(stmmac_pci_driver); 297 298 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver"); 299 MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>"); 300 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); 301 MODULE_LICENSE("GPL"); 302