1 // SPDX-License-Identifier: GPL-2.0-only
3  * Synopsys DWC Ethernet Quality-of-Service v4.10a linux driver
9 #include <linux/clk-provider.h>
11 #include <linux/gpio/consumer.h>
39 	struct device *dev = &pdev->dev;  in dwc_eth_dwmac_config_dt()
44 	if (!plat_dat->axi) {  in dwc_eth_dwmac_config_dt()
45 		plat_dat->axi = devm_kzalloc(&pdev->dev,  in dwc_eth_dwmac_config_dt()
49 		if (!plat_dat->axi)  in dwc_eth_dwmac_config_dt()
50 			return -ENOMEM;  in dwc_eth_dwmac_config_dt()
53 	plat_dat->axi->axi_lpi_en = device_property_read_bool(dev,  in dwc_eth_dwmac_config_dt()
54 							      "snps,en-lpi");  in dwc_eth_dwmac_config_dt()
55 	if (device_property_read_u32(dev, "snps,write-requests",  in dwc_eth_dwmac_config_dt()
56 				     &plat_dat->axi->axi_wr_osr_lmt)) {  in dwc_eth_dwmac_config_dt()
61 		plat_dat->axi->axi_wr_osr_lmt = 1;  in dwc_eth_dwmac_config_dt()
67 		plat_dat->axi->axi_wr_osr_lmt--;  in dwc_eth_dwmac_config_dt()
70 	if (device_property_read_u32(dev, "snps,read-requests",  in dwc_eth_dwmac_config_dt()
71 				     &plat_dat->axi->axi_rd_osr_lmt)) {  in dwc_eth_dwmac_config_dt()
76 		plat_dat->axi->axi_rd_osr_lmt = 1;  in dwc_eth_dwmac_config_dt()
82 		plat_dat->axi->axi_rd_osr_lmt--;  in dwc_eth_dwmac_config_dt()
84 	device_property_read_u32(dev, "snps,burst-map", &burst_map);  in dwc_eth_dwmac_config_dt()
86 	/* converts burst-map bitmask to burst array */  in dwc_eth_dwmac_config_dt()
91 			plat_dat->axi->axi_blen[a_index] = 4; break;  in dwc_eth_dwmac_config_dt()
93 			plat_dat->axi->axi_blen[a_index] = 8; break;  in dwc_eth_dwmac_config_dt()
95 			plat_dat->axi->axi_blen[a_index] = 16; break;  in dwc_eth_dwmac_config_dt()
97 			plat_dat->axi->axi_blen[a_index] = 32; break;  in dwc_eth_dwmac_config_dt()
99 			plat_dat->axi->axi_blen[a_index] = 64; break;  in dwc_eth_dwmac_config_dt()
101 			plat_dat->axi->axi_blen[a_index] = 128; break;  in dwc_eth_dwmac_config_dt()
103 			plat_dat->axi->axi_blen[a_index] = 256; break;  in dwc_eth_dwmac_config_dt()
111 	/* dwc-qos needs GMAC4, AAL, TSO and PMT */  in dwc_eth_dwmac_config_dt()
112 	plat_dat->has_gmac4 = 1;  in dwc_eth_dwmac_config_dt()
113 	plat_dat->dma_cfg->aal = 1;  in dwc_eth_dwmac_config_dt()
114 	plat_dat->flags |= STMMAC_FLAG_TSO_EN;  in dwc_eth_dwmac_config_dt()
115 	plat_dat->pmt = 1;  in dwc_eth_dwmac_config_dt()
124 	plat_dat->pclk = stmmac_pltfr_find_clk(plat_dat, "phy_ref_clk");  in dwc_qos_probe()
157 		dev_err(eqos->dev, "invalid speed %d\n", speed);  in tegra_eqos_fix_speed()
162 		priv = netdev_priv(dev_get_drvdata(eqos->dev));  in tegra_eqos_fix_speed()
165 		mutex_lock(&priv->mii->mdio_lock);  in tegra_eqos_fix_speed()
168 		value = readl(eqos->regs + SDMEMCOMPPADCTRL);  in tegra_eqos_fix_speed()
170 		writel(value, eqos->regs + SDMEMCOMPPADCTRL);  in tegra_eqos_fix_speed()
174 		value = readl(eqos->regs + AUTO_CAL_CONFIG);  in tegra_eqos_fix_speed()
176 		writel(value, eqos->regs + AUTO_CAL_CONFIG);  in tegra_eqos_fix_speed()
178 		err = readl_poll_timeout_atomic(eqos->regs + AUTO_CAL_STATUS,  in tegra_eqos_fix_speed()
183 			dev_err(eqos->dev, "calibration did not start\n");  in tegra_eqos_fix_speed()
187 		err = readl_poll_timeout_atomic(eqos->regs + AUTO_CAL_STATUS,  in tegra_eqos_fix_speed()
192 			dev_err(eqos->dev, "calibration didn't finish\n");  in tegra_eqos_fix_speed()
197 		value = readl(eqos->regs + SDMEMCOMPPADCTRL);  in tegra_eqos_fix_speed()
199 		writel(value, eqos->regs + SDMEMCOMPPADCTRL);  in tegra_eqos_fix_speed()
201 		mutex_unlock(&priv->mii->mdio_lock);  in tegra_eqos_fix_speed()
203 		value = readl(eqos->regs + AUTO_CAL_CONFIG);  in tegra_eqos_fix_speed()
205 		writel(value, eqos->regs + AUTO_CAL_CONFIG);  in tegra_eqos_fix_speed()
213 	struct device *dev = &pdev->dev;  in tegra_eqos_probe()
217 	eqos = devm_kzalloc(&pdev->dev, sizeof(*eqos), GFP_KERNEL);  in tegra_eqos_probe()
219 		return -ENOMEM;  in tegra_eqos_probe()
221 	eqos->dev = &pdev->dev;  in tegra_eqos_probe()
222 	eqos->regs = res->addr;  in tegra_eqos_probe()
224 	if (!is_of_node(dev->fwnode))  in tegra_eqos_probe()
227 	plat_dat->clk_tx_i = stmmac_pltfr_find_clk(plat_dat, "tx");  in tegra_eqos_probe()
229 	eqos->reset = devm_gpiod_get(&pdev->dev, "phy-reset", GPIOD_OUT_HIGH);  in tegra_eqos_probe()
230 	if (IS_ERR(eqos->reset)) {  in tegra_eqos_probe()
231 		err = PTR_ERR(eqos->reset);  in tegra_eqos_probe()
236 	gpiod_set_value(eqos->reset, 0);  in tegra_eqos_probe()
239 	plat_dat->mdio_bus_data->needs_reset = false;  in tegra_eqos_probe()
241 	eqos->rst = devm_reset_control_get(&pdev->dev, "eqos");  in tegra_eqos_probe()
242 	if (IS_ERR(eqos->rst)) {  in tegra_eqos_probe()
243 		err = PTR_ERR(eqos->rst);  in tegra_eqos_probe()
247 	err = reset_control_assert(eqos->rst);  in tegra_eqos_probe()
253 	err = reset_control_deassert(eqos->rst);  in tegra_eqos_probe()
260 	plat_dat->fix_mac_speed = tegra_eqos_fix_speed;  in tegra_eqos_probe()
261 	plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate;  in tegra_eqos_probe()
262 	plat_dat->bsp_priv = eqos;  in tegra_eqos_probe()
263 	plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE |  in tegra_eqos_probe()
269 	gpiod_set_value(eqos->reset, 1);  in tegra_eqos_probe()
276 	struct tegra_eqos *eqos = get_stmmac_bsp_priv(&pdev->dev);  in tegra_eqos_remove()
278 	reset_control_assert(eqos->rst);  in tegra_eqos_remove()
279 	gpiod_set_value(eqos->reset, 1);  in tegra_eqos_remove()
312 	data = device_get_match_data(&pdev->dev);  in dwc_eth_dwmac_probe()
333 	ret = devm_clk_bulk_get_all_enabled(&pdev->dev, &plat_dat->clks);  in dwc_eth_dwmac_probe()
335 		return dev_err_probe(&pdev->dev, ret, "Failed to retrieve and enable all required clocks\n");  in dwc_eth_dwmac_probe()
336 	plat_dat->num_clks = ret;  in dwc_eth_dwmac_probe()
338 	plat_dat->stmmac_clk = stmmac_pltfr_find_clk(plat_dat,  in dwc_eth_dwmac_probe()
339 						     data->stmmac_clk_name);  in dwc_eth_dwmac_probe()
341 	if (data->probe)  in dwc_eth_dwmac_probe()
342 		ret = data->probe(pdev, plat_dat, &stmmac_res);  in dwc_eth_dwmac_probe()
344 		dev_err_probe(&pdev->dev, ret, "failed to probe subdriver\n");  in dwc_eth_dwmac_probe()
352 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);  in dwc_eth_dwmac_probe()
359 	if (data->remove)  in dwc_eth_dwmac_probe()
360 		data->remove(pdev);  in dwc_eth_dwmac_probe()
367 	const struct dwc_eth_dwmac_data *data = device_get_match_data(&pdev->dev);  in dwc_eth_dwmac_remove()
369 	stmmac_dvr_remove(&pdev->dev);  in dwc_eth_dwmac_remove()
371 	if (data->remove)  in dwc_eth_dwmac_remove()
372 		data->remove(pdev);  in dwc_eth_dwmac_remove()
376 	{ .compatible = "snps,dwc-qos-ethernet-4.10", .data = &dwc_qos_data },
377 	{ .compatible = "nvidia,tegra186-eqos", .data = &tegra_eqos_data },
378 	{ .compatible = "tesla,fsd-ethqos", .data = &fsd_eqos_data },
387 		.name           = "dwc-eth-dwmac",
395 MODULE_DESCRIPTION("Synopsys DWC Ethernet Quality-of-Service v4.10a driver");