1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Atlantic Network Driver
3 *
4 * Copyright (C) 2014-2019 aQuantia Corporation
5 * Copyright (C) 2019-2020 Marvell International Ltd.
6 */
7
8 /* File aq_pci_func.c: Definition of PCI functions. */
9
10 #include <linux/interrupt.h>
11 #include <linux/module.h>
12
13 #include "aq_main.h"
14 #include "aq_nic.h"
15 #include "aq_vec.h"
16 #include "aq_hw.h"
17 #include "aq_pci_func.h"
18 #include "hw_atl/hw_atl_a0.h"
19 #include "hw_atl/hw_atl_b0.h"
20 #include "hw_atl2/hw_atl2.h"
21 #include "aq_filters.h"
22 #include "aq_drvinfo.h"
23 #include "aq_macsec.h"
24
25 static const struct pci_device_id aq_pci_tbl[] = {
26 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_0001), },
27 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D100), },
28 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D107), },
29 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D108), },
30 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D109), },
31
32 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC100), },
33 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC107), },
34 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC108), },
35 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC109), },
36 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC111), },
37 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC112), },
38
39 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC100S), },
40 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC107S), },
41 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC108S), },
42 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC109S), },
43 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC111S), },
44 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC112S), },
45
46 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC113DEV), },
47 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC113CS), },
48 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC114CS), },
49 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC113), },
50 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC113C), },
51 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC115C), },
52 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC113CA), },
53 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC116C), },
54
55 {}
56 };
57
58 static const struct aq_board_revision_s hw_atl_boards[] = {
59 { AQ_DEVICE_ID_0001, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc107, },
60 { AQ_DEVICE_ID_D100, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc100, },
61 { AQ_DEVICE_ID_D107, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc107, },
62 { AQ_DEVICE_ID_D108, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc108, },
63 { AQ_DEVICE_ID_D109, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc109, },
64
65 { AQ_DEVICE_ID_0001, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc107, },
66 { AQ_DEVICE_ID_D100, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc100, },
67 { AQ_DEVICE_ID_D107, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc107, },
68 { AQ_DEVICE_ID_D108, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc108, },
69 { AQ_DEVICE_ID_D109, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc109, },
70
71 { AQ_DEVICE_ID_AQC100, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc100, },
72 { AQ_DEVICE_ID_AQC107, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc107, },
73 { AQ_DEVICE_ID_AQC108, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc108, },
74 { AQ_DEVICE_ID_AQC109, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc109, },
75 { AQ_DEVICE_ID_AQC111, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc111, },
76 { AQ_DEVICE_ID_AQC112, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc112, },
77
78 { AQ_DEVICE_ID_AQC100S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc100s, },
79 { AQ_DEVICE_ID_AQC107S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc107s, },
80 { AQ_DEVICE_ID_AQC108S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc108s, },
81 { AQ_DEVICE_ID_AQC109S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc109s, },
82 { AQ_DEVICE_ID_AQC111S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc111s, },
83 { AQ_DEVICE_ID_AQC112S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc112s, },
84
85 { AQ_DEVICE_ID_AQC113DEV, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, },
86 { AQ_DEVICE_ID_AQC113, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, },
87 { AQ_DEVICE_ID_AQC113CS, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, },
88 { AQ_DEVICE_ID_AQC114CS, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, },
89 { AQ_DEVICE_ID_AQC113C, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, },
90 { AQ_DEVICE_ID_AQC115C, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc115c, },
91 { AQ_DEVICE_ID_AQC113CA, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, },
92 { AQ_DEVICE_ID_AQC116C, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc116c, },
93
94 };
95
96 MODULE_DEVICE_TABLE(pci, aq_pci_tbl);
97
aq_pci_probe_get_hw_by_id(struct pci_dev * pdev,const struct aq_hw_ops ** ops,const struct aq_hw_caps_s ** caps)98 static int aq_pci_probe_get_hw_by_id(struct pci_dev *pdev,
99 const struct aq_hw_ops **ops,
100 const struct aq_hw_caps_s **caps)
101 {
102 int i;
103
104 if (pdev->vendor != PCI_VENDOR_ID_AQUANTIA)
105 return -EINVAL;
106
107 for (i = 0; i < ARRAY_SIZE(hw_atl_boards); i++) {
108 if (hw_atl_boards[i].devid == pdev->device &&
109 (hw_atl_boards[i].revision == AQ_HWREV_ANY ||
110 hw_atl_boards[i].revision == pdev->revision)) {
111 *ops = hw_atl_boards[i].ops;
112 *caps = hw_atl_boards[i].caps;
113 break;
114 }
115 }
116
117 if (i == ARRAY_SIZE(hw_atl_boards))
118 return -EINVAL;
119
120 return 0;
121 }
122
aq_pci_func_init(struct pci_dev * pdev)123 static int aq_pci_func_init(struct pci_dev *pdev)
124 {
125 int err;
126
127 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
128 if (err)
129 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
130 if (err) {
131 err = -ENOSR;
132 goto err_exit;
133 }
134
135 err = pci_request_regions(pdev, AQ_CFG_DRV_NAME "_mmio");
136 if (err < 0)
137 goto err_exit;
138
139 pci_set_master(pdev);
140
141 return 0;
142
143 err_exit:
144 return err;
145 }
146
aq_pci_func_alloc_irq(struct aq_nic_s * self,unsigned int i,char * name,irq_handler_t irq_handler,void * irq_arg,cpumask_t * affinity_mask)147 int aq_pci_func_alloc_irq(struct aq_nic_s *self, unsigned int i,
148 char *name, irq_handler_t irq_handler,
149 void *irq_arg, cpumask_t *affinity_mask)
150 {
151 struct pci_dev *pdev = self->pdev;
152 int err;
153
154 if (pdev->msix_enabled || pdev->msi_enabled)
155 err = request_irq(pci_irq_vector(pdev, i), irq_handler, 0,
156 name, irq_arg);
157 else
158 err = request_irq(pci_irq_vector(pdev, i), aq_vec_isr_legacy,
159 IRQF_SHARED, name, irq_arg);
160
161 if (err >= 0) {
162 self->msix_entry_mask |= (1 << i);
163
164 if (pdev->msix_enabled && affinity_mask)
165 irq_set_affinity_hint(pci_irq_vector(pdev, i),
166 affinity_mask);
167 }
168
169 return err;
170 }
171
aq_pci_func_free_irqs(struct aq_nic_s * self)172 void aq_pci_func_free_irqs(struct aq_nic_s *self)
173 {
174 struct pci_dev *pdev = self->pdev;
175 unsigned int i;
176 void *irq_data;
177
178 for (i = 32U; i--;) {
179 if (!((1U << i) & self->msix_entry_mask))
180 continue;
181 if (self->aq_nic_cfg.link_irq_vec &&
182 i == self->aq_nic_cfg.link_irq_vec)
183 irq_data = self;
184 else if (i < AQ_CFG_VECS_MAX)
185 irq_data = self->aq_vec[i];
186 else
187 continue;
188
189 if (pdev->msix_enabled)
190 irq_set_affinity_hint(pci_irq_vector(pdev, i), NULL);
191 free_irq(pci_irq_vector(pdev, i), irq_data);
192 self->msix_entry_mask &= ~(1U << i);
193 }
194 }
195
aq_pci_func_get_irq_type(struct aq_nic_s * self)196 unsigned int aq_pci_func_get_irq_type(struct aq_nic_s *self)
197 {
198 if (self->pdev->msix_enabled)
199 return AQ_HW_IRQ_MSIX;
200 if (self->pdev->msi_enabled)
201 return AQ_HW_IRQ_MSI;
202
203 return AQ_HW_IRQ_LEGACY;
204 }
205
aq_pci_free_irq_vectors(struct aq_nic_s * self)206 static void aq_pci_free_irq_vectors(struct aq_nic_s *self)
207 {
208 pci_free_irq_vectors(self->pdev);
209 }
210
aq_pci_probe(struct pci_dev * pdev,const struct pci_device_id * pci_id)211 static int aq_pci_probe(struct pci_dev *pdev,
212 const struct pci_device_id *pci_id)
213 {
214 struct net_device *ndev;
215 resource_size_t mmio_pa;
216 struct aq_nic_s *self;
217 u32 numvecs;
218 u32 bar;
219 int err;
220
221 err = pci_enable_device(pdev);
222 if (err)
223 return err;
224
225 err = aq_pci_func_init(pdev);
226 if (err)
227 goto err_pci_func;
228
229 ndev = aq_ndev_alloc();
230 if (!ndev) {
231 err = -ENOMEM;
232 goto err_ndev;
233 }
234
235 self = netdev_priv(ndev);
236 self->pdev = pdev;
237 SET_NETDEV_DEV(ndev, &pdev->dev);
238 pci_set_drvdata(pdev, self);
239
240 mutex_init(&self->fwreq_mutex);
241
242 err = aq_pci_probe_get_hw_by_id(pdev, &self->aq_hw_ops,
243 &aq_nic_get_cfg(self)->aq_hw_caps);
244 if (err)
245 goto err_ioremap;
246
247 self->aq_hw = kzalloc(sizeof(*self->aq_hw), GFP_KERNEL);
248 if (!self->aq_hw) {
249 err = -ENOMEM;
250 goto err_ioremap;
251 }
252 self->aq_hw->aq_nic_cfg = aq_nic_get_cfg(self);
253 if (self->aq_hw->aq_nic_cfg->aq_hw_caps->priv_data_len) {
254 int len = self->aq_hw->aq_nic_cfg->aq_hw_caps->priv_data_len;
255
256 self->aq_hw->priv = kzalloc(len, GFP_KERNEL);
257 if (!self->aq_hw->priv) {
258 err = -ENOMEM;
259 goto err_free_aq_hw;
260 }
261 }
262
263 for (bar = 0; bar < 4; ++bar) {
264 if (IORESOURCE_MEM & pci_resource_flags(pdev, bar)) {
265 resource_size_t reg_sz;
266
267 mmio_pa = pci_resource_start(pdev, bar);
268 if (mmio_pa == 0U) {
269 err = -EIO;
270 goto err_free_aq_hw_priv;
271 }
272
273 reg_sz = pci_resource_len(pdev, bar);
274 if ((reg_sz <= 24 /*ATL_REGS_SIZE*/)) {
275 err = -EIO;
276 goto err_free_aq_hw_priv;
277 }
278
279 self->aq_hw->mmio = ioremap(mmio_pa, reg_sz);
280 if (!self->aq_hw->mmio) {
281 err = -EIO;
282 goto err_free_aq_hw_priv;
283 }
284 break;
285 }
286 }
287
288 if (bar == 4) {
289 err = -EIO;
290 goto err_free_aq_hw_priv;
291 }
292
293 numvecs = min((u8)AQ_CFG_VECS_DEF,
294 aq_nic_get_cfg(self)->aq_hw_caps->msix_irqs);
295 numvecs = min(numvecs, num_online_cpus());
296 /* Request IRQ vector for PTP */
297 numvecs += 1;
298
299 numvecs += AQ_HW_SERVICE_IRQS;
300 /*enable interrupts */
301 #if !AQ_CFG_FORCE_LEGACY_INT
302 err = pci_alloc_irq_vectors(self->pdev, 1, numvecs,
303 PCI_IRQ_MSIX | PCI_IRQ_MSI |
304 PCI_IRQ_LEGACY);
305
306 if (err < 0)
307 goto err_hwinit;
308 numvecs = err;
309 #endif
310 self->irqvecs = numvecs;
311
312 /* net device init */
313 aq_nic_cfg_start(self);
314
315 aq_nic_ndev_init(self);
316
317 err = aq_nic_ndev_register(self);
318 if (err < 0)
319 goto err_register;
320
321 aq_drvinfo_init(ndev);
322
323 return 0;
324
325 err_register:
326 aq_nic_free_vectors(self);
327 aq_pci_free_irq_vectors(self);
328 err_hwinit:
329 iounmap(self->aq_hw->mmio);
330 err_free_aq_hw_priv:
331 kfree(self->aq_hw->priv);
332 err_free_aq_hw:
333 kfree(self->aq_hw);
334 err_ioremap:
335 free_netdev(ndev);
336 err_ndev:
337 pci_release_regions(pdev);
338 err_pci_func:
339 pci_disable_device(pdev);
340
341 return err;
342 }
343
aq_pci_remove(struct pci_dev * pdev)344 static void aq_pci_remove(struct pci_dev *pdev)
345 {
346 struct aq_nic_s *self = pci_get_drvdata(pdev);
347
348 if (self->ndev) {
349 aq_clear_rxnfc_all_rules(self);
350 if (self->ndev->reg_state == NETREG_REGISTERED)
351 unregister_netdev(self->ndev);
352
353 #if IS_ENABLED(CONFIG_MACSEC)
354 aq_macsec_free(self);
355 #endif
356 aq_nic_free_vectors(self);
357 aq_pci_free_irq_vectors(self);
358 iounmap(self->aq_hw->mmio);
359 kfree(self->aq_hw->priv);
360 kfree(self->aq_hw);
361 pci_release_regions(pdev);
362 free_netdev(self->ndev);
363 }
364
365 pci_disable_device(pdev);
366 }
367
aq_pci_shutdown(struct pci_dev * pdev)368 static void aq_pci_shutdown(struct pci_dev *pdev)
369 {
370 struct aq_nic_s *self = pci_get_drvdata(pdev);
371
372 aq_nic_shutdown(self);
373
374 pci_disable_device(pdev);
375
376 if (system_state == SYSTEM_POWER_OFF) {
377 pci_wake_from_d3(pdev, false);
378 pci_set_power_state(pdev, PCI_D3hot);
379 }
380 }
381
382 #ifdef CONFIG_PM
aq_suspend_common(struct device * dev)383 static int aq_suspend_common(struct device *dev)
384 {
385 struct aq_nic_s *nic = pci_get_drvdata(to_pci_dev(dev));
386
387 rtnl_lock();
388
389 nic->power_state = AQ_HW_POWER_STATE_D3;
390 netif_device_detach(nic->ndev);
391 netif_tx_stop_all_queues(nic->ndev);
392
393 if (netif_running(nic->ndev))
394 aq_nic_stop(nic);
395
396 aq_nic_deinit(nic, !nic->aq_hw->aq_nic_cfg->wol);
397 aq_nic_set_power(nic);
398
399 rtnl_unlock();
400
401 return 0;
402 }
403
atl_resume_common(struct device * dev)404 static int atl_resume_common(struct device *dev)
405 {
406 struct pci_dev *pdev = to_pci_dev(dev);
407 struct aq_nic_s *nic;
408 int ret = 0;
409
410 nic = pci_get_drvdata(pdev);
411
412 rtnl_lock();
413
414 pci_set_power_state(pdev, PCI_D0);
415 pci_restore_state(pdev);
416
417 if (netif_running(nic->ndev)) {
418 ret = aq_nic_init(nic);
419 if (ret)
420 goto err_exit;
421
422 ret = aq_nic_start(nic);
423 if (ret)
424 goto err_exit;
425 }
426
427 netif_device_attach(nic->ndev);
428 netif_tx_start_all_queues(nic->ndev);
429
430 err_exit:
431 if (ret < 0)
432 aq_nic_deinit(nic, true);
433
434 rtnl_unlock();
435
436 return ret;
437 }
438
aq_pm_freeze(struct device * dev)439 static int aq_pm_freeze(struct device *dev)
440 {
441 return aq_suspend_common(dev);
442 }
443
aq_pm_suspend_poweroff(struct device * dev)444 static int aq_pm_suspend_poweroff(struct device *dev)
445 {
446 return aq_suspend_common(dev);
447 }
448
aq_pm_thaw(struct device * dev)449 static int aq_pm_thaw(struct device *dev)
450 {
451 return atl_resume_common(dev);
452 }
453
aq_pm_resume_restore(struct device * dev)454 static int aq_pm_resume_restore(struct device *dev)
455 {
456 return atl_resume_common(dev);
457 }
458
459 static const struct dev_pm_ops aq_pm_ops = {
460 .suspend = aq_pm_suspend_poweroff,
461 .poweroff = aq_pm_suspend_poweroff,
462 .freeze = aq_pm_freeze,
463 .resume = aq_pm_resume_restore,
464 .restore = aq_pm_resume_restore,
465 .thaw = aq_pm_thaw,
466 };
467 #endif
468
469 static struct pci_driver aq_pci_ops = {
470 .name = AQ_CFG_DRV_NAME,
471 .id_table = aq_pci_tbl,
472 .probe = aq_pci_probe,
473 .remove = aq_pci_remove,
474 .shutdown = aq_pci_shutdown,
475 #ifdef CONFIG_PM
476 .driver.pm = &aq_pm_ops,
477 #endif
478 };
479
aq_pci_func_register_driver(void)480 int aq_pci_func_register_driver(void)
481 {
482 return pci_register_driver(&aq_pci_ops);
483 }
484
aq_pci_func_unregister_driver(void)485 void aq_pci_func_unregister_driver(void)
486 {
487 pci_unregister_driver(&aq_pci_ops);
488 }
489
490