xref: /linux/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0)
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2020, Intel Corporation
3  */
4 
5 #include <linux/clk-provider.h>
6 #include <linux/pci.h>
7 #include <linux/dmi.h>
8 #include "dwmac-intel.h"
9 #include "dwmac4.h"
10 #include "stmmac.h"
11 #include "stmmac_ptp.h"
12 
13 struct intel_priv_data {
14 	int mdio_adhoc_addr;	/* mdio address for serdes & etc */
15 	unsigned long crossts_adj;
16 	bool is_pse;
17 };
18 
19 /* This struct is used to associate PCI Function of MAC controller on a board,
20  * discovered via DMI, with the address of PHY connected to the MAC. The
21  * negative value of the address means that MAC controller is not connected
22  * with PHY.
23  */
24 struct stmmac_pci_func_data {
25 	unsigned int func;
26 	int phy_addr;
27 };
28 
29 struct stmmac_pci_dmi_data {
30 	const struct stmmac_pci_func_data *func;
31 	size_t nfuncs;
32 };
33 
34 struct stmmac_pci_info {
35 	int (*setup)(struct pci_dev *pdev, struct plat_stmmacenet_data *plat);
36 };
37 
38 static int stmmac_pci_find_phy_addr(struct pci_dev *pdev,
39 				    const struct dmi_system_id *dmi_list)
40 {
41 	const struct stmmac_pci_func_data *func_data;
42 	const struct stmmac_pci_dmi_data *dmi_data;
43 	const struct dmi_system_id *dmi_id;
44 	int func = PCI_FUNC(pdev->devfn);
45 	size_t n;
46 
47 	dmi_id = dmi_first_match(dmi_list);
48 	if (!dmi_id)
49 		return -ENODEV;
50 
51 	dmi_data = dmi_id->driver_data;
52 	func_data = dmi_data->func;
53 
54 	for (n = 0; n < dmi_data->nfuncs; n++, func_data++)
55 		if (func_data->func == func)
56 			return func_data->phy_addr;
57 
58 	return -ENODEV;
59 }
60 
61 static int serdes_status_poll(struct stmmac_priv *priv, int phyaddr,
62 			      int phyreg, u32 mask, u32 val)
63 {
64 	unsigned int retries = 10;
65 	int val_rd;
66 
67 	do {
68 		val_rd = mdiobus_read(priv->mii, phyaddr, phyreg);
69 		if ((val_rd & mask) == (val & mask))
70 			return 0;
71 		udelay(POLL_DELAY_US);
72 	} while (--retries);
73 
74 	return -ETIMEDOUT;
75 }
76 
77 static int intel_serdes_powerup(struct net_device *ndev, void *priv_data)
78 {
79 	struct intel_priv_data *intel_priv = priv_data;
80 	struct stmmac_priv *priv = netdev_priv(ndev);
81 	int serdes_phy_addr = 0;
82 	u32 data = 0;
83 
84 	if (!intel_priv->mdio_adhoc_addr)
85 		return 0;
86 
87 	serdes_phy_addr = intel_priv->mdio_adhoc_addr;
88 
89 	/* Set the serdes rate and the PCLK rate */
90 	data = mdiobus_read(priv->mii, serdes_phy_addr,
91 			    SERDES_GCR0);
92 
93 	data &= ~SERDES_RATE_MASK;
94 	data &= ~SERDES_PCLK_MASK;
95 
96 	if (priv->plat->max_speed == 2500)
97 		data |= SERDES_RATE_PCIE_GEN2 << SERDES_RATE_PCIE_SHIFT |
98 			SERDES_PCLK_37p5MHZ << SERDES_PCLK_SHIFT;
99 	else
100 		data |= SERDES_RATE_PCIE_GEN1 << SERDES_RATE_PCIE_SHIFT |
101 			SERDES_PCLK_70MHZ << SERDES_PCLK_SHIFT;
102 
103 	mdiobus_write(priv->mii, serdes_phy_addr, SERDES_GCR0, data);
104 
105 	/* assert clk_req */
106 	data = mdiobus_read(priv->mii, serdes_phy_addr, SERDES_GCR0);
107 	data |= SERDES_PLL_CLK;
108 	mdiobus_write(priv->mii, serdes_phy_addr, SERDES_GCR0, data);
109 
110 	/* check for clk_ack assertion */
111 	data = serdes_status_poll(priv, serdes_phy_addr,
112 				  SERDES_GSR0,
113 				  SERDES_PLL_CLK,
114 				  SERDES_PLL_CLK);
115 
116 	if (data) {
117 		dev_err(priv->device, "Serdes PLL clk request timeout\n");
118 		return data;
119 	}
120 
121 	/* assert lane reset */
122 	data = mdiobus_read(priv->mii, serdes_phy_addr, SERDES_GCR0);
123 	data |= SERDES_RST;
124 	mdiobus_write(priv->mii, serdes_phy_addr, SERDES_GCR0, data);
125 
126 	/* check for assert lane reset reflection */
127 	data = serdes_status_poll(priv, serdes_phy_addr,
128 				  SERDES_GSR0,
129 				  SERDES_RST,
130 				  SERDES_RST);
131 
132 	if (data) {
133 		dev_err(priv->device, "Serdes assert lane reset timeout\n");
134 		return data;
135 	}
136 
137 	/*  move power state to P0 */
138 	data = mdiobus_read(priv->mii, serdes_phy_addr, SERDES_GCR0);
139 
140 	data &= ~SERDES_PWR_ST_MASK;
141 	data |= SERDES_PWR_ST_P0 << SERDES_PWR_ST_SHIFT;
142 
143 	mdiobus_write(priv->mii, serdes_phy_addr, SERDES_GCR0, data);
144 
145 	/* Check for P0 state */
146 	data = serdes_status_poll(priv, serdes_phy_addr,
147 				  SERDES_GSR0,
148 				  SERDES_PWR_ST_MASK,
149 				  SERDES_PWR_ST_P0 << SERDES_PWR_ST_SHIFT);
150 
151 	if (data) {
152 		dev_err(priv->device, "Serdes power state P0 timeout.\n");
153 		return data;
154 	}
155 
156 	/* PSE only - ungate SGMII PHY Rx Clock */
157 	if (intel_priv->is_pse)
158 		mdiobus_modify(priv->mii, serdes_phy_addr, SERDES_GCR0,
159 			       0, SERDES_PHY_RX_CLK);
160 
161 	return 0;
162 }
163 
164 static void intel_serdes_powerdown(struct net_device *ndev, void *intel_data)
165 {
166 	struct intel_priv_data *intel_priv = intel_data;
167 	struct stmmac_priv *priv = netdev_priv(ndev);
168 	int serdes_phy_addr = 0;
169 	u32 data = 0;
170 
171 	if (!intel_priv->mdio_adhoc_addr)
172 		return;
173 
174 	serdes_phy_addr = intel_priv->mdio_adhoc_addr;
175 
176 	/* PSE only - gate SGMII PHY Rx Clock */
177 	if (intel_priv->is_pse)
178 		mdiobus_modify(priv->mii, serdes_phy_addr, SERDES_GCR0,
179 			       SERDES_PHY_RX_CLK, 0);
180 
181 	/*  move power state to P3 */
182 	data = mdiobus_read(priv->mii, serdes_phy_addr, SERDES_GCR0);
183 
184 	data &= ~SERDES_PWR_ST_MASK;
185 	data |= SERDES_PWR_ST_P3 << SERDES_PWR_ST_SHIFT;
186 
187 	mdiobus_write(priv->mii, serdes_phy_addr, SERDES_GCR0, data);
188 
189 	/* Check for P3 state */
190 	data = serdes_status_poll(priv, serdes_phy_addr,
191 				  SERDES_GSR0,
192 				  SERDES_PWR_ST_MASK,
193 				  SERDES_PWR_ST_P3 << SERDES_PWR_ST_SHIFT);
194 
195 	if (data) {
196 		dev_err(priv->device, "Serdes power state P3 timeout\n");
197 		return;
198 	}
199 
200 	/* de-assert clk_req */
201 	data = mdiobus_read(priv->mii, serdes_phy_addr, SERDES_GCR0);
202 	data &= ~SERDES_PLL_CLK;
203 	mdiobus_write(priv->mii, serdes_phy_addr, SERDES_GCR0, data);
204 
205 	/* check for clk_ack de-assert */
206 	data = serdes_status_poll(priv, serdes_phy_addr,
207 				  SERDES_GSR0,
208 				  SERDES_PLL_CLK,
209 				  (u32)~SERDES_PLL_CLK);
210 
211 	if (data) {
212 		dev_err(priv->device, "Serdes PLL clk de-assert timeout\n");
213 		return;
214 	}
215 
216 	/* de-assert lane reset */
217 	data = mdiobus_read(priv->mii, serdes_phy_addr, SERDES_GCR0);
218 	data &= ~SERDES_RST;
219 	mdiobus_write(priv->mii, serdes_phy_addr, SERDES_GCR0, data);
220 
221 	/* check for de-assert lane reset reflection */
222 	data = serdes_status_poll(priv, serdes_phy_addr,
223 				  SERDES_GSR0,
224 				  SERDES_RST,
225 				  (u32)~SERDES_RST);
226 
227 	if (data) {
228 		dev_err(priv->device, "Serdes de-assert lane reset timeout\n");
229 		return;
230 	}
231 }
232 
233 static void intel_speed_mode_2500(struct net_device *ndev, void *intel_data)
234 {
235 	struct intel_priv_data *intel_priv = intel_data;
236 	struct stmmac_priv *priv = netdev_priv(ndev);
237 	int serdes_phy_addr = 0;
238 	u32 data = 0;
239 
240 	serdes_phy_addr = intel_priv->mdio_adhoc_addr;
241 
242 	/* Determine the link speed mode: 2.5Gbps/1Gbps */
243 	data = mdiobus_read(priv->mii, serdes_phy_addr,
244 			    SERDES_GCR);
245 
246 	if (((data & SERDES_LINK_MODE_MASK) >> SERDES_LINK_MODE_SHIFT) ==
247 	    SERDES_LINK_MODE_2G5) {
248 		dev_info(priv->device, "Link Speed Mode: 2.5Gbps\n");
249 		priv->plat->max_speed = 2500;
250 		priv->plat->phy_interface = PHY_INTERFACE_MODE_2500BASEX;
251 		priv->plat->mdio_bus_data->default_an_inband = false;
252 	} else {
253 		priv->plat->max_speed = 1000;
254 	}
255 }
256 
257 /* Program PTP Clock Frequency for different variant of
258  * Intel mGBE that has slightly different GPO mapping
259  */
260 static void intel_mgbe_ptp_clk_freq_config(struct stmmac_priv *priv)
261 {
262 	struct intel_priv_data *intel_priv;
263 	u32 gpio_value;
264 
265 	intel_priv = (struct intel_priv_data *)priv->plat->bsp_priv;
266 
267 	gpio_value = readl(priv->ioaddr + GMAC_GPIO_STATUS);
268 
269 	if (intel_priv->is_pse) {
270 		/* For PSE GbE, use 200MHz */
271 		gpio_value &= ~PSE_PTP_CLK_FREQ_MASK;
272 		gpio_value |= PSE_PTP_CLK_FREQ_200MHZ;
273 	} else {
274 		/* For PCH GbE, use 200MHz */
275 		gpio_value &= ~PCH_PTP_CLK_FREQ_MASK;
276 		gpio_value |= PCH_PTP_CLK_FREQ_200MHZ;
277 	}
278 
279 	writel(gpio_value, priv->ioaddr + GMAC_GPIO_STATUS);
280 }
281 
282 static void get_arttime(struct mii_bus *mii, int intel_adhoc_addr,
283 			u64 *art_time)
284 {
285 	u64 ns;
286 
287 	ns = mdiobus_read(mii, intel_adhoc_addr, PMC_ART_VALUE3);
288 	ns <<= GMAC4_ART_TIME_SHIFT;
289 	ns |= mdiobus_read(mii, intel_adhoc_addr, PMC_ART_VALUE2);
290 	ns <<= GMAC4_ART_TIME_SHIFT;
291 	ns |= mdiobus_read(mii, intel_adhoc_addr, PMC_ART_VALUE1);
292 	ns <<= GMAC4_ART_TIME_SHIFT;
293 	ns |= mdiobus_read(mii, intel_adhoc_addr, PMC_ART_VALUE0);
294 
295 	*art_time = ns;
296 }
297 
298 static int stmmac_cross_ts_isr(struct stmmac_priv *priv)
299 {
300 	return (readl(priv->ioaddr + GMAC_INT_STATUS) & GMAC_INT_TSIE);
301 }
302 
303 static int intel_crosststamp(ktime_t *device,
304 			     struct system_counterval_t *system,
305 			     void *ctx)
306 {
307 	struct intel_priv_data *intel_priv;
308 
309 	struct stmmac_priv *priv = (struct stmmac_priv *)ctx;
310 	void __iomem *ptpaddr = priv->ptpaddr;
311 	void __iomem *ioaddr = priv->hw->pcsr;
312 	unsigned long flags;
313 	u64 art_time = 0;
314 	u64 ptp_time = 0;
315 	u32 num_snapshot;
316 	u32 gpio_value;
317 	u32 acr_value;
318 	int i;
319 
320 	if (!boot_cpu_has(X86_FEATURE_ART))
321 		return -EOPNOTSUPP;
322 
323 	intel_priv = priv->plat->bsp_priv;
324 
325 	/* Both internal crosstimestamping and external triggered event
326 	 * timestamping cannot be run concurrently.
327 	 */
328 	if (priv->plat->flags & STMMAC_FLAG_EXT_SNAPSHOT_EN)
329 		return -EBUSY;
330 
331 	priv->plat->flags |= STMMAC_FLAG_INT_SNAPSHOT_EN;
332 
333 	mutex_lock(&priv->aux_ts_lock);
334 	/* Enable Internal snapshot trigger */
335 	acr_value = readl(ptpaddr + PTP_ACR);
336 	acr_value &= ~PTP_ACR_MASK;
337 	switch (priv->plat->int_snapshot_num) {
338 	case AUX_SNAPSHOT0:
339 		acr_value |= PTP_ACR_ATSEN0;
340 		break;
341 	case AUX_SNAPSHOT1:
342 		acr_value |= PTP_ACR_ATSEN1;
343 		break;
344 	case AUX_SNAPSHOT2:
345 		acr_value |= PTP_ACR_ATSEN2;
346 		break;
347 	case AUX_SNAPSHOT3:
348 		acr_value |= PTP_ACR_ATSEN3;
349 		break;
350 	default:
351 		mutex_unlock(&priv->aux_ts_lock);
352 		priv->plat->flags &= ~STMMAC_FLAG_INT_SNAPSHOT_EN;
353 		return -EINVAL;
354 	}
355 	writel(acr_value, ptpaddr + PTP_ACR);
356 
357 	/* Clear FIFO */
358 	acr_value = readl(ptpaddr + PTP_ACR);
359 	acr_value |= PTP_ACR_ATSFC;
360 	writel(acr_value, ptpaddr + PTP_ACR);
361 	/* Release the mutex */
362 	mutex_unlock(&priv->aux_ts_lock);
363 
364 	/* Trigger Internal snapshot signal
365 	 * Create a rising edge by just toggle the GPO1 to low
366 	 * and back to high.
367 	 */
368 	gpio_value = readl(ioaddr + GMAC_GPIO_STATUS);
369 	gpio_value &= ~GMAC_GPO1;
370 	writel(gpio_value, ioaddr + GMAC_GPIO_STATUS);
371 	gpio_value |= GMAC_GPO1;
372 	writel(gpio_value, ioaddr + GMAC_GPIO_STATUS);
373 
374 	/* Time sync done Indication - Interrupt method */
375 	if (!wait_event_interruptible_timeout(priv->tstamp_busy_wait,
376 					      stmmac_cross_ts_isr(priv),
377 					      HZ / 100)) {
378 		priv->plat->flags &= ~STMMAC_FLAG_INT_SNAPSHOT_EN;
379 		return -ETIMEDOUT;
380 	}
381 
382 	num_snapshot = (readl(ioaddr + GMAC_TIMESTAMP_STATUS) &
383 			GMAC_TIMESTAMP_ATSNS_MASK) >>
384 			GMAC_TIMESTAMP_ATSNS_SHIFT;
385 
386 	/* Repeat until the timestamps are from the FIFO last segment */
387 	for (i = 0; i < num_snapshot; i++) {
388 		read_lock_irqsave(&priv->ptp_lock, flags);
389 		stmmac_get_ptptime(priv, ptpaddr, &ptp_time);
390 		*device = ns_to_ktime(ptp_time);
391 		read_unlock_irqrestore(&priv->ptp_lock, flags);
392 		get_arttime(priv->mii, intel_priv->mdio_adhoc_addr, &art_time);
393 		system->cycles = art_time;
394 	}
395 
396 	system->cycles *= intel_priv->crossts_adj;
397 	system->cs_id = CSID_X86_ART;
398 	priv->plat->flags &= ~STMMAC_FLAG_INT_SNAPSHOT_EN;
399 
400 	return 0;
401 }
402 
403 static void intel_mgbe_pse_crossts_adj(struct intel_priv_data *intel_priv,
404 				       int base)
405 {
406 	if (boot_cpu_has(X86_FEATURE_ART)) {
407 		unsigned int art_freq;
408 
409 		/* On systems that support ART, ART frequency can be obtained
410 		 * from ECX register of CPUID leaf (0x15).
411 		 */
412 		art_freq = cpuid_ecx(ART_CPUID_LEAF);
413 		do_div(art_freq, base);
414 		intel_priv->crossts_adj = art_freq;
415 	}
416 }
417 
418 static void common_default_data(struct plat_stmmacenet_data *plat)
419 {
420 	plat->clk_csr = 2;	/* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
421 	plat->has_gmac = 1;
422 	plat->force_sf_dma_mode = 1;
423 
424 	plat->mdio_bus_data->needs_reset = true;
425 
426 	/* Set default value for multicast hash bins */
427 	plat->multicast_filter_bins = HASH_TABLE_SIZE;
428 
429 	/* Set default value for unicast filter entries */
430 	plat->unicast_filter_entries = 1;
431 
432 	/* Set the maxmtu to a default of JUMBO_LEN */
433 	plat->maxmtu = JUMBO_LEN;
434 
435 	/* Set default number of RX and TX queues to use */
436 	plat->tx_queues_to_use = 1;
437 	plat->rx_queues_to_use = 1;
438 
439 	/* Disable Priority config by default */
440 	plat->tx_queues_cfg[0].use_prio = false;
441 	plat->rx_queues_cfg[0].use_prio = false;
442 
443 	/* Disable RX queues routing by default */
444 	plat->rx_queues_cfg[0].pkt_route = 0x0;
445 }
446 
447 static struct phylink_pcs *intel_mgbe_select_pcs(struct stmmac_priv *priv,
448 						 phy_interface_t interface)
449 {
450 	/* plat->mdio_bus_data->has_xpcs has been set true, so there
451 	 * should always be an XPCS. The original code would always
452 	 * return this if present.
453 	 */
454 	return &priv->hw->xpcs->pcs;
455 }
456 
457 static int intel_mgbe_common_data(struct pci_dev *pdev,
458 				  struct plat_stmmacenet_data *plat)
459 {
460 	struct fwnode_handle *fwnode;
461 	char clk_name[20];
462 	int ret;
463 	int i;
464 
465 	plat->pdev = pdev;
466 	plat->phy_addr = -1;
467 	plat->clk_csr = 5;
468 	plat->has_gmac = 0;
469 	plat->has_gmac4 = 1;
470 	plat->force_sf_dma_mode = 0;
471 	plat->flags |= (STMMAC_FLAG_TSO_EN | STMMAC_FLAG_SPH_DISABLE);
472 
473 	/* Multiplying factor to the clk_eee_i clock time
474 	 * period to make it closer to 100 ns. This value
475 	 * should be programmed such that the clk_eee_time_period *
476 	 * (MULT_FACT_100NS + 1) should be within 80 ns to 120 ns
477 	 * clk_eee frequency is 19.2Mhz
478 	 * clk_eee_time_period is 52ns
479 	 * 52ns * (1 + 1) = 104ns
480 	 * MULT_FACT_100NS = 1
481 	 */
482 	plat->mult_fact_100ns = 1;
483 
484 	plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP;
485 
486 	for (i = 0; i < plat->rx_queues_to_use; i++) {
487 		plat->rx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;
488 		plat->rx_queues_cfg[i].chan = i;
489 
490 		/* Disable Priority config by default */
491 		plat->rx_queues_cfg[i].use_prio = false;
492 
493 		/* Disable RX queues routing by default */
494 		plat->rx_queues_cfg[i].pkt_route = 0x0;
495 	}
496 
497 	for (i = 0; i < plat->tx_queues_to_use; i++) {
498 		plat->tx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;
499 
500 		/* Disable Priority config by default */
501 		plat->tx_queues_cfg[i].use_prio = false;
502 		/* Default TX Q0 to use TSO and rest TXQ for TBS */
503 		if (i > 0)
504 			plat->tx_queues_cfg[i].tbs_en = 1;
505 	}
506 
507 	/* FIFO size is 4096 bytes for 1 tx/rx queue */
508 	plat->tx_fifo_size = plat->tx_queues_to_use * 4096;
509 	plat->rx_fifo_size = plat->rx_queues_to_use * 4096;
510 
511 	plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WRR;
512 	plat->tx_queues_cfg[0].weight = 0x09;
513 	plat->tx_queues_cfg[1].weight = 0x0A;
514 	plat->tx_queues_cfg[2].weight = 0x0B;
515 	plat->tx_queues_cfg[3].weight = 0x0C;
516 	plat->tx_queues_cfg[4].weight = 0x0D;
517 	plat->tx_queues_cfg[5].weight = 0x0E;
518 	plat->tx_queues_cfg[6].weight = 0x0F;
519 	plat->tx_queues_cfg[7].weight = 0x10;
520 
521 	plat->dma_cfg->pbl = 32;
522 	plat->dma_cfg->pblx8 = true;
523 	plat->dma_cfg->fixed_burst = 0;
524 	plat->dma_cfg->mixed_burst = 0;
525 	plat->dma_cfg->aal = 0;
526 	plat->dma_cfg->dche = true;
527 
528 	plat->axi = devm_kzalloc(&pdev->dev, sizeof(*plat->axi),
529 				 GFP_KERNEL);
530 	if (!plat->axi)
531 		return -ENOMEM;
532 
533 	plat->axi->axi_lpi_en = 0;
534 	plat->axi->axi_xit_frm = 0;
535 	plat->axi->axi_wr_osr_lmt = 1;
536 	plat->axi->axi_rd_osr_lmt = 1;
537 	plat->axi->axi_blen[0] = 4;
538 	plat->axi->axi_blen[1] = 8;
539 	plat->axi->axi_blen[2] = 16;
540 
541 	plat->ptp_max_adj = plat->clk_ptp_rate;
542 	plat->eee_usecs_rate = plat->clk_ptp_rate;
543 
544 	/* Set system clock */
545 	sprintf(clk_name, "%s-%s", "stmmac", pci_name(pdev));
546 
547 	plat->stmmac_clk = clk_register_fixed_rate(&pdev->dev,
548 						   clk_name, NULL, 0,
549 						   plat->clk_ptp_rate);
550 
551 	if (IS_ERR(plat->stmmac_clk)) {
552 		dev_warn(&pdev->dev, "Fail to register stmmac-clk\n");
553 		plat->stmmac_clk = NULL;
554 	}
555 
556 	ret = clk_prepare_enable(plat->stmmac_clk);
557 	if (ret) {
558 		clk_unregister_fixed_rate(plat->stmmac_clk);
559 		return ret;
560 	}
561 
562 	plat->ptp_clk_freq_config = intel_mgbe_ptp_clk_freq_config;
563 
564 	/* Set default value for multicast hash bins */
565 	plat->multicast_filter_bins = HASH_TABLE_SIZE;
566 
567 	/* Set default value for unicast filter entries */
568 	plat->unicast_filter_entries = 1;
569 
570 	/* Set the maxmtu to a default of JUMBO_LEN */
571 	plat->maxmtu = JUMBO_LEN;
572 
573 	plat->flags |= STMMAC_FLAG_VLAN_FAIL_Q_EN;
574 
575 	/* Use the last Rx queue */
576 	plat->vlan_fail_q = plat->rx_queues_to_use - 1;
577 
578 	/* For fixed-link setup, we allow phy-mode setting */
579 	fwnode = dev_fwnode(&pdev->dev);
580 	if (fwnode) {
581 		int phy_mode;
582 
583 		/* "phy-mode" setting is optional. If it is set,
584 		 *  we allow either sgmii or 1000base-x for now.
585 		 */
586 		phy_mode = fwnode_get_phy_mode(fwnode);
587 		if (phy_mode >= 0) {
588 			if (phy_mode == PHY_INTERFACE_MODE_SGMII ||
589 			    phy_mode == PHY_INTERFACE_MODE_1000BASEX)
590 				plat->phy_interface = phy_mode;
591 			else
592 				dev_warn(&pdev->dev, "Invalid phy-mode\n");
593 		}
594 	}
595 
596 	/* Intel mgbe SGMII interface uses pcs-xcps */
597 	if (plat->phy_interface == PHY_INTERFACE_MODE_SGMII ||
598 	    plat->phy_interface == PHY_INTERFACE_MODE_1000BASEX) {
599 		plat->mdio_bus_data->pcs_mask = BIT(INTEL_MGBE_XPCS_ADDR);
600 		plat->mdio_bus_data->default_an_inband = true;
601 		plat->select_pcs = intel_mgbe_select_pcs;
602 	}
603 
604 	/* Ensure mdio bus scan skips intel serdes and pcs-xpcs */
605 	plat->mdio_bus_data->phy_mask = 1 << INTEL_MGBE_ADHOC_ADDR;
606 	plat->mdio_bus_data->phy_mask |= 1 << INTEL_MGBE_XPCS_ADDR;
607 
608 	plat->int_snapshot_num = AUX_SNAPSHOT1;
609 
610 	plat->crosststamp = intel_crosststamp;
611 	plat->flags &= ~STMMAC_FLAG_INT_SNAPSHOT_EN;
612 
613 	/* Setup MSI vector offset specific to Intel mGbE controller */
614 	plat->msi_mac_vec = 29;
615 	plat->msi_lpi_vec = 28;
616 	plat->msi_sfty_ce_vec = 27;
617 	plat->msi_sfty_ue_vec = 26;
618 	plat->msi_rx_base_vec = 0;
619 	plat->msi_tx_base_vec = 1;
620 
621 	return 0;
622 }
623 
624 static int ehl_common_data(struct pci_dev *pdev,
625 			   struct plat_stmmacenet_data *plat)
626 {
627 	plat->rx_queues_to_use = 8;
628 	plat->tx_queues_to_use = 8;
629 	plat->flags |= STMMAC_FLAG_USE_PHY_WOL;
630 	plat->flags |= STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY;
631 
632 	plat->safety_feat_cfg->tsoee = 1;
633 	plat->safety_feat_cfg->mrxpee = 1;
634 	plat->safety_feat_cfg->mestee = 1;
635 	plat->safety_feat_cfg->mrxee = 1;
636 	plat->safety_feat_cfg->mtxee = 1;
637 	plat->safety_feat_cfg->epsi = 0;
638 	plat->safety_feat_cfg->edpp = 0;
639 	plat->safety_feat_cfg->prtyen = 0;
640 	plat->safety_feat_cfg->tmouten = 0;
641 
642 	return intel_mgbe_common_data(pdev, plat);
643 }
644 
645 static int ehl_sgmii_data(struct pci_dev *pdev,
646 			  struct plat_stmmacenet_data *plat)
647 {
648 	plat->bus_id = 1;
649 	plat->phy_interface = PHY_INTERFACE_MODE_SGMII;
650 	plat->speed_mode_2500 = intel_speed_mode_2500;
651 	plat->serdes_powerup = intel_serdes_powerup;
652 	plat->serdes_powerdown = intel_serdes_powerdown;
653 
654 	plat->clk_ptp_rate = 204800000;
655 
656 	return ehl_common_data(pdev, plat);
657 }
658 
659 static struct stmmac_pci_info ehl_sgmii1g_info = {
660 	.setup = ehl_sgmii_data,
661 };
662 
663 static int ehl_rgmii_data(struct pci_dev *pdev,
664 			  struct plat_stmmacenet_data *plat)
665 {
666 	plat->bus_id = 1;
667 	plat->phy_interface = PHY_INTERFACE_MODE_RGMII;
668 
669 	plat->clk_ptp_rate = 204800000;
670 
671 	return ehl_common_data(pdev, plat);
672 }
673 
674 static struct stmmac_pci_info ehl_rgmii1g_info = {
675 	.setup = ehl_rgmii_data,
676 };
677 
678 static int ehl_pse0_common_data(struct pci_dev *pdev,
679 				struct plat_stmmacenet_data *plat)
680 {
681 	struct intel_priv_data *intel_priv = plat->bsp_priv;
682 
683 	intel_priv->is_pse = true;
684 	plat->bus_id = 2;
685 	plat->host_dma_width = 32;
686 
687 	plat->clk_ptp_rate = 200000000;
688 
689 	intel_mgbe_pse_crossts_adj(intel_priv, EHL_PSE_ART_MHZ);
690 
691 	return ehl_common_data(pdev, plat);
692 }
693 
694 static int ehl_pse0_rgmii1g_data(struct pci_dev *pdev,
695 				 struct plat_stmmacenet_data *plat)
696 {
697 	plat->phy_interface = PHY_INTERFACE_MODE_RGMII_ID;
698 	return ehl_pse0_common_data(pdev, plat);
699 }
700 
701 static struct stmmac_pci_info ehl_pse0_rgmii1g_info = {
702 	.setup = ehl_pse0_rgmii1g_data,
703 };
704 
705 static int ehl_pse0_sgmii1g_data(struct pci_dev *pdev,
706 				 struct plat_stmmacenet_data *plat)
707 {
708 	plat->phy_interface = PHY_INTERFACE_MODE_SGMII;
709 	plat->speed_mode_2500 = intel_speed_mode_2500;
710 	plat->serdes_powerup = intel_serdes_powerup;
711 	plat->serdes_powerdown = intel_serdes_powerdown;
712 	return ehl_pse0_common_data(pdev, plat);
713 }
714 
715 static struct stmmac_pci_info ehl_pse0_sgmii1g_info = {
716 	.setup = ehl_pse0_sgmii1g_data,
717 };
718 
719 static int ehl_pse1_common_data(struct pci_dev *pdev,
720 				struct plat_stmmacenet_data *plat)
721 {
722 	struct intel_priv_data *intel_priv = plat->bsp_priv;
723 
724 	intel_priv->is_pse = true;
725 	plat->bus_id = 3;
726 	plat->host_dma_width = 32;
727 
728 	plat->clk_ptp_rate = 200000000;
729 
730 	intel_mgbe_pse_crossts_adj(intel_priv, EHL_PSE_ART_MHZ);
731 
732 	return ehl_common_data(pdev, plat);
733 }
734 
735 static int ehl_pse1_rgmii1g_data(struct pci_dev *pdev,
736 				 struct plat_stmmacenet_data *plat)
737 {
738 	plat->phy_interface = PHY_INTERFACE_MODE_RGMII_ID;
739 	return ehl_pse1_common_data(pdev, plat);
740 }
741 
742 static struct stmmac_pci_info ehl_pse1_rgmii1g_info = {
743 	.setup = ehl_pse1_rgmii1g_data,
744 };
745 
746 static int ehl_pse1_sgmii1g_data(struct pci_dev *pdev,
747 				 struct plat_stmmacenet_data *plat)
748 {
749 	plat->phy_interface = PHY_INTERFACE_MODE_SGMII;
750 	plat->speed_mode_2500 = intel_speed_mode_2500;
751 	plat->serdes_powerup = intel_serdes_powerup;
752 	plat->serdes_powerdown = intel_serdes_powerdown;
753 	return ehl_pse1_common_data(pdev, plat);
754 }
755 
756 static struct stmmac_pci_info ehl_pse1_sgmii1g_info = {
757 	.setup = ehl_pse1_sgmii1g_data,
758 };
759 
760 static int tgl_common_data(struct pci_dev *pdev,
761 			   struct plat_stmmacenet_data *plat)
762 {
763 	plat->rx_queues_to_use = 6;
764 	plat->tx_queues_to_use = 4;
765 	plat->clk_ptp_rate = 204800000;
766 	plat->speed_mode_2500 = intel_speed_mode_2500;
767 
768 	plat->safety_feat_cfg->tsoee = 1;
769 	plat->safety_feat_cfg->mrxpee = 0;
770 	plat->safety_feat_cfg->mestee = 1;
771 	plat->safety_feat_cfg->mrxee = 1;
772 	plat->safety_feat_cfg->mtxee = 1;
773 	plat->safety_feat_cfg->epsi = 0;
774 	plat->safety_feat_cfg->edpp = 0;
775 	plat->safety_feat_cfg->prtyen = 0;
776 	plat->safety_feat_cfg->tmouten = 0;
777 
778 	return intel_mgbe_common_data(pdev, plat);
779 }
780 
781 static int tgl_sgmii_phy0_data(struct pci_dev *pdev,
782 			       struct plat_stmmacenet_data *plat)
783 {
784 	plat->bus_id = 1;
785 	plat->phy_interface = PHY_INTERFACE_MODE_SGMII;
786 	plat->serdes_powerup = intel_serdes_powerup;
787 	plat->serdes_powerdown = intel_serdes_powerdown;
788 	return tgl_common_data(pdev, plat);
789 }
790 
791 static struct stmmac_pci_info tgl_sgmii1g_phy0_info = {
792 	.setup = tgl_sgmii_phy0_data,
793 };
794 
795 static int tgl_sgmii_phy1_data(struct pci_dev *pdev,
796 			       struct plat_stmmacenet_data *plat)
797 {
798 	plat->bus_id = 2;
799 	plat->phy_interface = PHY_INTERFACE_MODE_SGMII;
800 	plat->serdes_powerup = intel_serdes_powerup;
801 	plat->serdes_powerdown = intel_serdes_powerdown;
802 	return tgl_common_data(pdev, plat);
803 }
804 
805 static struct stmmac_pci_info tgl_sgmii1g_phy1_info = {
806 	.setup = tgl_sgmii_phy1_data,
807 };
808 
809 static int adls_sgmii_phy0_data(struct pci_dev *pdev,
810 				struct plat_stmmacenet_data *plat)
811 {
812 	plat->bus_id = 1;
813 	plat->phy_interface = PHY_INTERFACE_MODE_SGMII;
814 
815 	/* SerDes power up and power down are done in BIOS for ADL */
816 
817 	return tgl_common_data(pdev, plat);
818 }
819 
820 static struct stmmac_pci_info adls_sgmii1g_phy0_info = {
821 	.setup = adls_sgmii_phy0_data,
822 };
823 
824 static int adls_sgmii_phy1_data(struct pci_dev *pdev,
825 				struct plat_stmmacenet_data *plat)
826 {
827 	plat->bus_id = 2;
828 	plat->phy_interface = PHY_INTERFACE_MODE_SGMII;
829 
830 	/* SerDes power up and power down are done in BIOS for ADL */
831 
832 	return tgl_common_data(pdev, plat);
833 }
834 
835 static struct stmmac_pci_info adls_sgmii1g_phy1_info = {
836 	.setup = adls_sgmii_phy1_data,
837 };
838 static const struct stmmac_pci_func_data galileo_stmmac_func_data[] = {
839 	{
840 		.func = 6,
841 		.phy_addr = 1,
842 	},
843 };
844 
845 static const struct stmmac_pci_dmi_data galileo_stmmac_dmi_data = {
846 	.func = galileo_stmmac_func_data,
847 	.nfuncs = ARRAY_SIZE(galileo_stmmac_func_data),
848 };
849 
850 static const struct stmmac_pci_func_data iot2040_stmmac_func_data[] = {
851 	{
852 		.func = 6,
853 		.phy_addr = 1,
854 	},
855 	{
856 		.func = 7,
857 		.phy_addr = 1,
858 	},
859 };
860 
861 static const struct stmmac_pci_dmi_data iot2040_stmmac_dmi_data = {
862 	.func = iot2040_stmmac_func_data,
863 	.nfuncs = ARRAY_SIZE(iot2040_stmmac_func_data),
864 };
865 
866 static const struct dmi_system_id quark_pci_dmi[] = {
867 	{
868 		.matches = {
869 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "Galileo"),
870 		},
871 		.driver_data = (void *)&galileo_stmmac_dmi_data,
872 	},
873 	{
874 		.matches = {
875 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GalileoGen2"),
876 		},
877 		.driver_data = (void *)&galileo_stmmac_dmi_data,
878 	},
879 	/* There are 2 types of SIMATIC IOT2000: IOT2020 and IOT2040.
880 	 * The asset tag "6ES7647-0AA00-0YA2" is only for IOT2020 which
881 	 * has only one pci network device while other asset tags are
882 	 * for IOT2040 which has two.
883 	 */
884 	{
885 		.matches = {
886 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"),
887 			DMI_EXACT_MATCH(DMI_BOARD_ASSET_TAG,
888 					"6ES7647-0AA00-0YA2"),
889 		},
890 		.driver_data = (void *)&galileo_stmmac_dmi_data,
891 	},
892 	{
893 		.matches = {
894 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"),
895 		},
896 		.driver_data = (void *)&iot2040_stmmac_dmi_data,
897 	},
898 	{}
899 };
900 
901 static int quark_default_data(struct pci_dev *pdev,
902 			      struct plat_stmmacenet_data *plat)
903 {
904 	int ret;
905 
906 	/* Set common default data first */
907 	common_default_data(plat);
908 
909 	/* Refuse to load the driver and register net device if MAC controller
910 	 * does not connect to any PHY interface.
911 	 */
912 	ret = stmmac_pci_find_phy_addr(pdev, quark_pci_dmi);
913 	if (ret < 0) {
914 		/* Return error to the caller on DMI enabled boards. */
915 		if (dmi_get_system_info(DMI_BOARD_NAME))
916 			return ret;
917 
918 		/* Galileo boards with old firmware don't support DMI. We always
919 		 * use 1 here as PHY address, so at least the first found MAC
920 		 * controller would be probed.
921 		 */
922 		ret = 1;
923 	}
924 
925 	plat->bus_id = pci_dev_id(pdev);
926 	plat->phy_addr = ret;
927 	plat->phy_interface = PHY_INTERFACE_MODE_RMII;
928 
929 	plat->dma_cfg->pbl = 16;
930 	plat->dma_cfg->pblx8 = true;
931 	plat->dma_cfg->fixed_burst = 1;
932 	/* AXI (TODO) */
933 
934 	return 0;
935 }
936 
937 static const struct stmmac_pci_info quark_info = {
938 	.setup = quark_default_data,
939 };
940 
941 static int stmmac_config_single_msi(struct pci_dev *pdev,
942 				    struct plat_stmmacenet_data *plat,
943 				    struct stmmac_resources *res)
944 {
945 	int ret;
946 
947 	ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
948 	if (ret < 0) {
949 		dev_info(&pdev->dev, "%s: Single IRQ enablement failed\n",
950 			 __func__);
951 		return ret;
952 	}
953 
954 	res->irq = pci_irq_vector(pdev, 0);
955 	res->wol_irq = res->irq;
956 	plat->flags &= ~STMMAC_FLAG_MULTI_MSI_EN;
957 	dev_info(&pdev->dev, "%s: Single IRQ enablement successful\n",
958 		 __func__);
959 
960 	return 0;
961 }
962 
963 static int stmmac_config_multi_msi(struct pci_dev *pdev,
964 				   struct plat_stmmacenet_data *plat,
965 				   struct stmmac_resources *res)
966 {
967 	int ret;
968 	int i;
969 
970 	if (plat->msi_rx_base_vec >= STMMAC_MSI_VEC_MAX ||
971 	    plat->msi_tx_base_vec >= STMMAC_MSI_VEC_MAX) {
972 		dev_info(&pdev->dev, "%s: Invalid RX & TX vector defined\n",
973 			 __func__);
974 		return -1;
975 	}
976 
977 	ret = pci_alloc_irq_vectors(pdev, 2, STMMAC_MSI_VEC_MAX,
978 				    PCI_IRQ_MSI | PCI_IRQ_MSIX);
979 	if (ret < 0) {
980 		dev_info(&pdev->dev, "%s: multi MSI enablement failed\n",
981 			 __func__);
982 		return ret;
983 	}
984 
985 	/* For RX MSI */
986 	for (i = 0; i < plat->rx_queues_to_use; i++) {
987 		res->rx_irq[i] = pci_irq_vector(pdev,
988 						plat->msi_rx_base_vec + i * 2);
989 	}
990 
991 	/* For TX MSI */
992 	for (i = 0; i < plat->tx_queues_to_use; i++) {
993 		res->tx_irq[i] = pci_irq_vector(pdev,
994 						plat->msi_tx_base_vec + i * 2);
995 	}
996 
997 	if (plat->msi_mac_vec < STMMAC_MSI_VEC_MAX)
998 		res->irq = pci_irq_vector(pdev, plat->msi_mac_vec);
999 	if (plat->msi_wol_vec < STMMAC_MSI_VEC_MAX)
1000 		res->wol_irq = pci_irq_vector(pdev, plat->msi_wol_vec);
1001 	if (plat->msi_lpi_vec < STMMAC_MSI_VEC_MAX)
1002 		res->lpi_irq = pci_irq_vector(pdev, plat->msi_lpi_vec);
1003 	if (plat->msi_sfty_ce_vec < STMMAC_MSI_VEC_MAX)
1004 		res->sfty_ce_irq = pci_irq_vector(pdev, plat->msi_sfty_ce_vec);
1005 	if (plat->msi_sfty_ue_vec < STMMAC_MSI_VEC_MAX)
1006 		res->sfty_ue_irq = pci_irq_vector(pdev, plat->msi_sfty_ue_vec);
1007 
1008 	plat->flags |= STMMAC_FLAG_MULTI_MSI_EN;
1009 	dev_info(&pdev->dev, "%s: multi MSI enablement successful\n", __func__);
1010 
1011 	return 0;
1012 }
1013 
1014 /**
1015  * intel_eth_pci_probe
1016  *
1017  * @pdev: pci device pointer
1018  * @id: pointer to table of device id/id's.
1019  *
1020  * Description: This probing function gets called for all PCI devices which
1021  * match the ID table and are not "owned" by other driver yet. This function
1022  * gets passed a "struct pci_dev *" for each device whose entry in the ID table
1023  * matches the device. The probe functions returns zero when the driver choose
1024  * to take "ownership" of the device or an error code(-ve no) otherwise.
1025  */
1026 static int intel_eth_pci_probe(struct pci_dev *pdev,
1027 			       const struct pci_device_id *id)
1028 {
1029 	struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data;
1030 	struct intel_priv_data *intel_priv;
1031 	struct plat_stmmacenet_data *plat;
1032 	struct stmmac_resources res;
1033 	int ret;
1034 
1035 	intel_priv = devm_kzalloc(&pdev->dev, sizeof(*intel_priv), GFP_KERNEL);
1036 	if (!intel_priv)
1037 		return -ENOMEM;
1038 
1039 	plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
1040 	if (!plat)
1041 		return -ENOMEM;
1042 
1043 	plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
1044 					   sizeof(*plat->mdio_bus_data),
1045 					   GFP_KERNEL);
1046 	if (!plat->mdio_bus_data)
1047 		return -ENOMEM;
1048 
1049 	plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),
1050 				     GFP_KERNEL);
1051 	if (!plat->dma_cfg)
1052 		return -ENOMEM;
1053 
1054 	plat->safety_feat_cfg = devm_kzalloc(&pdev->dev,
1055 					     sizeof(*plat->safety_feat_cfg),
1056 					     GFP_KERNEL);
1057 	if (!plat->safety_feat_cfg)
1058 		return -ENOMEM;
1059 
1060 	/* Enable pci device */
1061 	ret = pcim_enable_device(pdev);
1062 	if (ret) {
1063 		dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",
1064 			__func__);
1065 		return ret;
1066 	}
1067 
1068 	ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
1069 	if (ret)
1070 		return ret;
1071 
1072 	pci_set_master(pdev);
1073 
1074 	plat->bsp_priv = intel_priv;
1075 	intel_priv->mdio_adhoc_addr = INTEL_MGBE_ADHOC_ADDR;
1076 	intel_priv->crossts_adj = 1;
1077 
1078 	/* Initialize all MSI vectors to invalid so that it can be set
1079 	 * according to platform data settings below.
1080 	 * Note: MSI vector takes value from 0 upto 31 (STMMAC_MSI_VEC_MAX)
1081 	 */
1082 	plat->msi_mac_vec = STMMAC_MSI_VEC_MAX;
1083 	plat->msi_wol_vec = STMMAC_MSI_VEC_MAX;
1084 	plat->msi_lpi_vec = STMMAC_MSI_VEC_MAX;
1085 	plat->msi_sfty_ce_vec = STMMAC_MSI_VEC_MAX;
1086 	plat->msi_sfty_ue_vec = STMMAC_MSI_VEC_MAX;
1087 	plat->msi_rx_base_vec = STMMAC_MSI_VEC_MAX;
1088 	plat->msi_tx_base_vec = STMMAC_MSI_VEC_MAX;
1089 
1090 	ret = info->setup(pdev, plat);
1091 	if (ret)
1092 		return ret;
1093 
1094 	memset(&res, 0, sizeof(res));
1095 	res.addr = pcim_iomap_table(pdev)[0];
1096 
1097 	if (plat->eee_usecs_rate > 0) {
1098 		u32 tx_lpi_usec;
1099 
1100 		tx_lpi_usec = (plat->eee_usecs_rate / 1000000) - 1;
1101 		writel(tx_lpi_usec, res.addr + GMAC_1US_TIC_COUNTER);
1102 	}
1103 
1104 	ret = stmmac_config_multi_msi(pdev, plat, &res);
1105 	if (ret) {
1106 		ret = stmmac_config_single_msi(pdev, plat, &res);
1107 		if (ret) {
1108 			dev_err(&pdev->dev, "%s: ERROR: failed to enable IRQ\n",
1109 				__func__);
1110 			goto err_alloc_irq;
1111 		}
1112 	}
1113 
1114 	ret = stmmac_dvr_probe(&pdev->dev, plat, &res);
1115 	if (ret) {
1116 		goto err_alloc_irq;
1117 	}
1118 
1119 	return 0;
1120 
1121 err_alloc_irq:
1122 	clk_disable_unprepare(plat->stmmac_clk);
1123 	clk_unregister_fixed_rate(plat->stmmac_clk);
1124 	return ret;
1125 }
1126 
1127 /**
1128  * intel_eth_pci_remove
1129  *
1130  * @pdev: pci device pointer
1131  * Description: this function calls the main to free the net resources
1132  * and releases the PCI resources.
1133  */
1134 static void intel_eth_pci_remove(struct pci_dev *pdev)
1135 {
1136 	struct net_device *ndev = dev_get_drvdata(&pdev->dev);
1137 	struct stmmac_priv *priv = netdev_priv(ndev);
1138 
1139 	stmmac_dvr_remove(&pdev->dev);
1140 
1141 	clk_disable_unprepare(priv->plat->stmmac_clk);
1142 	clk_unregister_fixed_rate(priv->plat->stmmac_clk);
1143 }
1144 
1145 static int __maybe_unused intel_eth_pci_suspend(struct device *dev)
1146 {
1147 	struct pci_dev *pdev = to_pci_dev(dev);
1148 	int ret;
1149 
1150 	ret = stmmac_suspend(dev);
1151 	if (ret)
1152 		return ret;
1153 
1154 	ret = pci_save_state(pdev);
1155 	if (ret)
1156 		return ret;
1157 
1158 	pci_wake_from_d3(pdev, true);
1159 	pci_set_power_state(pdev, PCI_D3hot);
1160 	return 0;
1161 }
1162 
1163 static int __maybe_unused intel_eth_pci_resume(struct device *dev)
1164 {
1165 	struct pci_dev *pdev = to_pci_dev(dev);
1166 	int ret;
1167 
1168 	pci_restore_state(pdev);
1169 	pci_set_power_state(pdev, PCI_D0);
1170 
1171 	ret = pcim_enable_device(pdev);
1172 	if (ret)
1173 		return ret;
1174 
1175 	pci_set_master(pdev);
1176 
1177 	return stmmac_resume(dev);
1178 }
1179 
1180 static SIMPLE_DEV_PM_OPS(intel_eth_pm_ops, intel_eth_pci_suspend,
1181 			 intel_eth_pci_resume);
1182 
1183 #define PCI_DEVICE_ID_INTEL_QUARK		0x0937
1184 #define PCI_DEVICE_ID_INTEL_EHL_RGMII1G		0x4b30
1185 #define PCI_DEVICE_ID_INTEL_EHL_SGMII1G		0x4b31
1186 #define PCI_DEVICE_ID_INTEL_EHL_SGMII2G5	0x4b32
1187 /* Intel(R) Programmable Services Engine (Intel(R) PSE) consist of 2 MAC
1188  * which are named PSE0 and PSE1
1189  */
1190 #define PCI_DEVICE_ID_INTEL_EHL_PSE0_RGMII1G	0x4ba0
1191 #define PCI_DEVICE_ID_INTEL_EHL_PSE0_SGMII1G	0x4ba1
1192 #define PCI_DEVICE_ID_INTEL_EHL_PSE0_SGMII2G5	0x4ba2
1193 #define PCI_DEVICE_ID_INTEL_EHL_PSE1_RGMII1G	0x4bb0
1194 #define PCI_DEVICE_ID_INTEL_EHL_PSE1_SGMII1G	0x4bb1
1195 #define PCI_DEVICE_ID_INTEL_EHL_PSE1_SGMII2G5	0x4bb2
1196 #define PCI_DEVICE_ID_INTEL_TGLH_SGMII1G_0	0x43ac
1197 #define PCI_DEVICE_ID_INTEL_TGLH_SGMII1G_1	0x43a2
1198 #define PCI_DEVICE_ID_INTEL_TGL_SGMII1G		0xa0ac
1199 #define PCI_DEVICE_ID_INTEL_ADLS_SGMII1G_0	0x7aac
1200 #define PCI_DEVICE_ID_INTEL_ADLS_SGMII1G_1	0x7aad
1201 #define PCI_DEVICE_ID_INTEL_ADLN_SGMII1G	0x54ac
1202 #define PCI_DEVICE_ID_INTEL_RPLP_SGMII1G	0x51ac
1203 
1204 static const struct pci_device_id intel_eth_pci_id_table[] = {
1205 	{ PCI_DEVICE_DATA(INTEL, QUARK, &quark_info) },
1206 	{ PCI_DEVICE_DATA(INTEL, EHL_RGMII1G, &ehl_rgmii1g_info) },
1207 	{ PCI_DEVICE_DATA(INTEL, EHL_SGMII1G, &ehl_sgmii1g_info) },
1208 	{ PCI_DEVICE_DATA(INTEL, EHL_SGMII2G5, &ehl_sgmii1g_info) },
1209 	{ PCI_DEVICE_DATA(INTEL, EHL_PSE0_RGMII1G, &ehl_pse0_rgmii1g_info) },
1210 	{ PCI_DEVICE_DATA(INTEL, EHL_PSE0_SGMII1G, &ehl_pse0_sgmii1g_info) },
1211 	{ PCI_DEVICE_DATA(INTEL, EHL_PSE0_SGMII2G5, &ehl_pse0_sgmii1g_info) },
1212 	{ PCI_DEVICE_DATA(INTEL, EHL_PSE1_RGMII1G, &ehl_pse1_rgmii1g_info) },
1213 	{ PCI_DEVICE_DATA(INTEL, EHL_PSE1_SGMII1G, &ehl_pse1_sgmii1g_info) },
1214 	{ PCI_DEVICE_DATA(INTEL, EHL_PSE1_SGMII2G5, &ehl_pse1_sgmii1g_info) },
1215 	{ PCI_DEVICE_DATA(INTEL, TGL_SGMII1G, &tgl_sgmii1g_phy0_info) },
1216 	{ PCI_DEVICE_DATA(INTEL, TGLH_SGMII1G_0, &tgl_sgmii1g_phy0_info) },
1217 	{ PCI_DEVICE_DATA(INTEL, TGLH_SGMII1G_1, &tgl_sgmii1g_phy1_info) },
1218 	{ PCI_DEVICE_DATA(INTEL, ADLS_SGMII1G_0, &adls_sgmii1g_phy0_info) },
1219 	{ PCI_DEVICE_DATA(INTEL, ADLS_SGMII1G_1, &adls_sgmii1g_phy1_info) },
1220 	{ PCI_DEVICE_DATA(INTEL, ADLN_SGMII1G, &tgl_sgmii1g_phy0_info) },
1221 	{ PCI_DEVICE_DATA(INTEL, RPLP_SGMII1G, &tgl_sgmii1g_phy0_info) },
1222 	{}
1223 };
1224 MODULE_DEVICE_TABLE(pci, intel_eth_pci_id_table);
1225 
1226 static struct pci_driver intel_eth_pci_driver = {
1227 	.name = "intel-eth-pci",
1228 	.id_table = intel_eth_pci_id_table,
1229 	.probe = intel_eth_pci_probe,
1230 	.remove = intel_eth_pci_remove,
1231 	.driver         = {
1232 		.pm     = &intel_eth_pm_ops,
1233 	},
1234 };
1235 
1236 module_pci_driver(intel_eth_pci_driver);
1237 
1238 MODULE_DESCRIPTION("INTEL 10/100/1000 Ethernet PCI driver");
1239 MODULE_AUTHOR("Voon Weifeng <weifeng.voon@intel.com>");
1240 MODULE_LICENSE("GPL v2");
1241