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1 | /* | |
2 | * aQuantia Corporation Network Driver | |
3 | * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | */ | |
9 | ||
10 | /* File aq_pci_func.c: Definition of PCI functions. */ | |
11 | ||
12 | #include <linux/interrupt.h> | |
13 | #include <linux/module.h> | |
14 | ||
15 | #include "aq_main.h" | |
16 | #include "aq_nic.h" | |
17 | #include "aq_vec.h" | |
18 | #include "aq_hw.h" | |
19 | #include "aq_pci_func.h" | |
20 | #include "hw_atl/hw_atl_a0.h" | |
21 | #include "hw_atl/hw_atl_b0.h" | |
22 | ||
23 | static const struct pci_device_id aq_pci_tbl[] = { | |
24 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_0001), }, | |
25 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D100), }, | |
26 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D107), }, | |
27 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D108), }, | |
28 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D109), }, | |
29 | ||
30 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC100), }, | |
31 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC107), }, | |
32 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC108), }, | |
33 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC109), }, | |
34 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC111), }, | |
35 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC112), }, | |
36 | ||
37 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC100S), }, | |
38 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC107S), }, | |
39 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC108S), }, | |
40 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC109S), }, | |
41 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC111S), }, | |
42 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC112S), }, | |
43 | ||
44 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC111E), }, | |
45 | { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC112E), }, | |
46 | ||
47 | {} | |
48 | }; | |
49 | ||
50 | const struct aq_board_revision_s hw_atl_boards[] = { | |
51 | { AQ_DEVICE_ID_0001, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc107, }, | |
52 | { AQ_DEVICE_ID_D100, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc100, }, | |
53 | { AQ_DEVICE_ID_D107, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc107, }, | |
54 | { AQ_DEVICE_ID_D108, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc108, }, | |
55 | { AQ_DEVICE_ID_D109, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc109, }, | |
56 | ||
57 | { AQ_DEVICE_ID_0001, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc107, }, | |
58 | { AQ_DEVICE_ID_D100, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc100, }, | |
59 | { AQ_DEVICE_ID_D107, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc107, }, | |
60 | { AQ_DEVICE_ID_D108, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc108, }, | |
61 | { AQ_DEVICE_ID_D109, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc109, }, | |
62 | ||
63 | { AQ_DEVICE_ID_AQC100, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc107, }, | |
64 | { AQ_DEVICE_ID_AQC107, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc107, }, | |
65 | { AQ_DEVICE_ID_AQC108, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc108, }, | |
66 | { AQ_DEVICE_ID_AQC109, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc109, }, | |
67 | { AQ_DEVICE_ID_AQC111, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc111, }, | |
68 | { AQ_DEVICE_ID_AQC112, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc112, }, | |
69 | ||
70 | { AQ_DEVICE_ID_AQC100S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc100s, }, | |
71 | { AQ_DEVICE_ID_AQC107S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc107s, }, | |
72 | { AQ_DEVICE_ID_AQC108S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc108s, }, | |
73 | { AQ_DEVICE_ID_AQC109S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc109s, }, | |
74 | { AQ_DEVICE_ID_AQC111S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc111s, }, | |
75 | { AQ_DEVICE_ID_AQC112S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc112s, }, | |
76 | ||
77 | { AQ_DEVICE_ID_AQC111E, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc111e, }, | |
78 | { AQ_DEVICE_ID_AQC112E, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc112e, }, | |
79 | }; | |
80 | ||
81 | MODULE_DEVICE_TABLE(pci, aq_pci_tbl); | |
82 | ||
83 | static int aq_pci_probe_get_hw_by_id(struct pci_dev *pdev, | |
84 | const struct aq_hw_ops **ops, | |
85 | const struct aq_hw_caps_s **caps) | |
86 | { | |
87 | int i = 0; | |
88 | ||
89 | if (pdev->vendor != PCI_VENDOR_ID_AQUANTIA) | |
90 | return -EINVAL; | |
91 | ||
92 | for (i = 0; i < ARRAY_SIZE(hw_atl_boards); i++) { | |
93 | if (hw_atl_boards[i].devid == pdev->device && | |
94 | (hw_atl_boards[i].revision == AQ_HWREV_ANY || | |
95 | hw_atl_boards[i].revision == pdev->revision)) { | |
96 | *ops = hw_atl_boards[i].ops; | |
97 | *caps = hw_atl_boards[i].caps; | |
98 | break; | |
99 | } | |
100 | } | |
101 | ||
102 | if (i == ARRAY_SIZE(hw_atl_boards)) | |
103 | return -EINVAL; | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
108 | int aq_pci_func_init(struct pci_dev *pdev) | |
109 | { | |
110 | int err = 0; | |
111 | ||
112 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); | |
113 | if (!err) { | |
114 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); | |
115 | ||
116 | } | |
117 | if (err) { | |
118 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
119 | if (!err) | |
120 | err = pci_set_consistent_dma_mask(pdev, | |
121 | DMA_BIT_MASK(32)); | |
122 | } | |
123 | if (err != 0) { | |
124 | err = -ENOSR; | |
125 | goto err_exit; | |
126 | } | |
127 | ||
128 | err = pci_request_regions(pdev, AQ_CFG_DRV_NAME "_mmio"); | |
129 | if (err < 0) | |
130 | goto err_exit; | |
131 | ||
132 | pci_set_master(pdev); | |
133 | ||
134 | return 0; | |
135 | ||
136 | err_exit: | |
137 | return err; | |
138 | } | |
139 | ||
140 | int aq_pci_func_alloc_irq(struct aq_nic_s *self, unsigned int i, | |
141 | char *name, void *aq_vec, cpumask_t *affinity_mask) | |
142 | { | |
143 | struct pci_dev *pdev = self->pdev; | |
144 | int err = 0; | |
145 | ||
146 | if (pdev->msix_enabled || pdev->msi_enabled) | |
147 | err = request_irq(pci_irq_vector(pdev, i), aq_vec_isr, 0, | |
148 | name, aq_vec); | |
149 | else | |
150 | err = request_irq(pci_irq_vector(pdev, i), aq_vec_isr_legacy, | |
151 | IRQF_SHARED, name, aq_vec); | |
152 | ||
153 | if (err >= 0) { | |
154 | self->msix_entry_mask |= (1 << i); | |
155 | self->aq_vec[i] = aq_vec; | |
156 | ||
157 | if (pdev->msix_enabled) | |
158 | irq_set_affinity_hint(pci_irq_vector(pdev, i), | |
159 | affinity_mask); | |
160 | } | |
161 | return err; | |
162 | } | |
163 | ||
164 | void aq_pci_func_free_irqs(struct aq_nic_s *self) | |
165 | { | |
166 | struct pci_dev *pdev = self->pdev; | |
167 | unsigned int i = 0U; | |
168 | ||
169 | for (i = 32U; i--;) { | |
170 | if (!((1U << i) & self->msix_entry_mask)) | |
171 | continue; | |
172 | ||
173 | if (pdev->msix_enabled) | |
174 | irq_set_affinity_hint(pci_irq_vector(pdev, i), NULL); | |
175 | free_irq(pci_irq_vector(pdev, i), self->aq_vec[i]); | |
176 | self->msix_entry_mask &= ~(1U << i); | |
177 | } | |
178 | } | |
179 | ||
180 | unsigned int aq_pci_func_get_irq_type(struct aq_nic_s *self) | |
181 | { | |
182 | if (self->pdev->msix_enabled) | |
183 | return AQ_HW_IRQ_MSIX; | |
184 | if (self->pdev->msi_enabled) | |
185 | return AQ_HW_IRQ_MSIX; | |
186 | return AQ_HW_IRQ_LEGACY; | |
187 | } | |
188 | ||
189 | static void aq_pci_free_irq_vectors(struct aq_nic_s *self) | |
190 | { | |
191 | pci_free_irq_vectors(self->pdev); | |
192 | } | |
193 | ||
194 | static int aq_pci_probe(struct pci_dev *pdev, | |
195 | const struct pci_device_id *pci_id) | |
196 | { | |
197 | struct aq_nic_s *self = NULL; | |
198 | int err = 0; | |
199 | struct net_device *ndev; | |
200 | resource_size_t mmio_pa; | |
201 | u32 bar; | |
202 | u32 numvecs; | |
203 | ||
204 | err = pci_enable_device(pdev); | |
205 | if (err) | |
206 | return err; | |
207 | ||
208 | err = aq_pci_func_init(pdev); | |
209 | if (err) | |
210 | goto err_pci_func; | |
211 | ||
212 | ndev = aq_ndev_alloc(); | |
213 | if (!ndev) | |
214 | goto err_ndev; | |
215 | ||
216 | self = netdev_priv(ndev); | |
217 | self->pdev = pdev; | |
218 | SET_NETDEV_DEV(ndev, &pdev->dev); | |
219 | pci_set_drvdata(pdev, self); | |
220 | ||
221 | err = aq_pci_probe_get_hw_by_id(pdev, &self->aq_hw_ops, | |
222 | &aq_nic_get_cfg(self)->aq_hw_caps); | |
223 | if (err) | |
224 | goto err_ioremap; | |
225 | ||
226 | self->aq_hw = kzalloc(sizeof(*self->aq_hw), GFP_KERNEL); | |
227 | self->aq_hw->aq_nic_cfg = aq_nic_get_cfg(self); | |
228 | ||
229 | for (bar = 0; bar < 4; ++bar) { | |
230 | if (IORESOURCE_MEM & pci_resource_flags(pdev, bar)) { | |
231 | resource_size_t reg_sz; | |
232 | ||
233 | mmio_pa = pci_resource_start(pdev, bar); | |
234 | if (mmio_pa == 0U) { | |
235 | err = -EIO; | |
236 | goto err_ioremap; | |
237 | } | |
238 | ||
239 | reg_sz = pci_resource_len(pdev, bar); | |
240 | if ((reg_sz <= 24 /*ATL_REGS_SIZE*/)) { | |
241 | err = -EIO; | |
242 | goto err_ioremap; | |
243 | } | |
244 | ||
245 | self->aq_hw->mmio = ioremap_nocache(mmio_pa, reg_sz); | |
246 | if (!self->aq_hw->mmio) { | |
247 | err = -EIO; | |
248 | goto err_ioremap; | |
249 | } | |
250 | break; | |
251 | } | |
252 | } | |
253 | ||
254 | if (bar == 4) { | |
255 | err = -EIO; | |
256 | goto err_ioremap; | |
257 | } | |
258 | ||
259 | numvecs = min((u8)AQ_CFG_VECS_DEF, | |
260 | aq_nic_get_cfg(self)->aq_hw_caps->msix_irqs); | |
261 | numvecs = min(numvecs, num_online_cpus()); | |
262 | /*enable interrupts */ | |
263 | #if !AQ_CFG_FORCE_LEGACY_INT | |
264 | err = pci_alloc_irq_vectors(self->pdev, numvecs, numvecs, | |
265 | PCI_IRQ_MSIX); | |
266 | ||
267 | if (err < 0) { | |
268 | err = pci_alloc_irq_vectors(self->pdev, 1, 1, | |
269 | PCI_IRQ_MSI | PCI_IRQ_LEGACY); | |
270 | if (err < 0) | |
271 | goto err_hwinit; | |
272 | } | |
273 | #endif | |
274 | ||
275 | /* net device init */ | |
276 | aq_nic_cfg_start(self); | |
277 | ||
278 | aq_nic_ndev_init(self); | |
279 | ||
280 | err = aq_nic_ndev_register(self); | |
281 | if (err < 0) | |
282 | goto err_register; | |
283 | ||
284 | return 0; | |
285 | ||
286 | err_register: | |
287 | aq_nic_free_vectors(self); | |
288 | aq_pci_free_irq_vectors(self); | |
289 | err_hwinit: | |
290 | iounmap(self->aq_hw->mmio); | |
291 | err_ioremap: | |
292 | free_netdev(ndev); | |
293 | err_pci_func: | |
294 | pci_release_regions(pdev); | |
295 | err_ndev: | |
296 | pci_disable_device(pdev); | |
297 | return err; | |
298 | } | |
299 | ||
300 | static void aq_pci_remove(struct pci_dev *pdev) | |
301 | { | |
302 | struct aq_nic_s *self = pci_get_drvdata(pdev); | |
303 | ||
304 | if (self->ndev) { | |
305 | if (self->ndev->reg_state == NETREG_REGISTERED) | |
306 | unregister_netdev(self->ndev); | |
307 | aq_nic_free_vectors(self); | |
308 | aq_pci_free_irq_vectors(self); | |
309 | iounmap(self->aq_hw->mmio); | |
310 | kfree(self->aq_hw); | |
311 | pci_release_regions(pdev); | |
312 | free_netdev(self->ndev); | |
313 | } | |
314 | ||
315 | pci_disable_device(pdev); | |
316 | } | |
317 | ||
318 | static void aq_pci_shutdown(struct pci_dev *pdev) | |
319 | { | |
320 | struct aq_nic_s *self = pci_get_drvdata(pdev); | |
321 | ||
322 | aq_nic_shutdown(self); | |
323 | ||
324 | pci_disable_device(pdev); | |
325 | ||
326 | if (system_state == SYSTEM_POWER_OFF) { | |
327 | pci_wake_from_d3(pdev, false); | |
328 | pci_set_power_state(pdev, PCI_D3hot); | |
329 | } | |
330 | } | |
331 | ||
332 | static int aq_pci_suspend(struct pci_dev *pdev, pm_message_t pm_msg) | |
333 | { | |
334 | struct aq_nic_s *self = pci_get_drvdata(pdev); | |
335 | ||
336 | return aq_nic_change_pm_state(self, &pm_msg); | |
337 | } | |
338 | ||
339 | static int aq_pci_resume(struct pci_dev *pdev) | |
340 | { | |
341 | struct aq_nic_s *self = pci_get_drvdata(pdev); | |
342 | pm_message_t pm_msg = PMSG_RESTORE; | |
343 | ||
344 | return aq_nic_change_pm_state(self, &pm_msg); | |
345 | } | |
346 | ||
347 | static struct pci_driver aq_pci_ops = { | |
348 | .name = AQ_CFG_DRV_NAME, | |
349 | .id_table = aq_pci_tbl, | |
350 | .probe = aq_pci_probe, | |
351 | .remove = aq_pci_remove, | |
352 | .suspend = aq_pci_suspend, | |
353 | .resume = aq_pci_resume, | |
354 | .shutdown = aq_pci_shutdown, | |
355 | }; | |
356 | ||
357 | module_pci_driver(aq_pci_ops); |