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pinctrl: sh-pfc: r8a77965: Add DRIF pins, groups and functions
[mirror_ubuntu-focal-kernel.git] / drivers / net / ethernet / microchip / lan743x_main.c
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /* Copyright (C) 2018 Microchip Technology Inc. */
3
4 #include <linux/module.h>
5 #include <linux/pci.h>
6 #include <linux/netdevice.h>
7 #include <linux/etherdevice.h>
8 #include <linux/crc32.h>
9 #include <linux/microchipphy.h>
10 #include <linux/net_tstamp.h>
11 #include <linux/phy.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/iopoll.h>
14 #include <linux/crc16.h>
15 #include "lan743x_main.h"
16 #include "lan743x_ethtool.h"
17
18 static void lan743x_pci_cleanup(struct lan743x_adapter *adapter)
19 {
20 pci_release_selected_regions(adapter->pdev,
21 pci_select_bars(adapter->pdev,
22 IORESOURCE_MEM));
23 pci_disable_device(adapter->pdev);
24 }
25
26 static int lan743x_pci_init(struct lan743x_adapter *adapter,
27 struct pci_dev *pdev)
28 {
29 unsigned long bars = 0;
30 int ret;
31
32 adapter->pdev = pdev;
33 ret = pci_enable_device_mem(pdev);
34 if (ret)
35 goto return_error;
36
37 netif_info(adapter, probe, adapter->netdev,
38 "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n",
39 pdev->vendor, pdev->device);
40 bars = pci_select_bars(pdev, IORESOURCE_MEM);
41 if (!test_bit(0, &bars))
42 goto disable_device;
43
44 ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME);
45 if (ret)
46 goto disable_device;
47
48 pci_set_master(pdev);
49 return 0;
50
51 disable_device:
52 pci_disable_device(adapter->pdev);
53
54 return_error:
55 return ret;
56 }
57
58 u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset)
59 {
60 return ioread32(&adapter->csr.csr_address[offset]);
61 }
62
63 void lan743x_csr_write(struct lan743x_adapter *adapter, int offset,
64 u32 data)
65 {
66 iowrite32(data, &adapter->csr.csr_address[offset]);
67 }
68
69 #define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset)
70
71 static int lan743x_csr_light_reset(struct lan743x_adapter *adapter)
72 {
73 u32 data;
74
75 data = lan743x_csr_read(adapter, HW_CFG);
76 data |= HW_CFG_LRST_;
77 lan743x_csr_write(adapter, HW_CFG, data);
78
79 return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data,
80 !(data & HW_CFG_LRST_), 100000, 10000000);
81 }
82
83 static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter,
84 int offset, u32 bit_mask,
85 int target_value, int usleep_min,
86 int usleep_max, int count)
87 {
88 u32 data;
89
90 return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data,
91 target_value == ((data & bit_mask) ? 1 : 0),
92 usleep_max, usleep_min * count);
93 }
94
95 static int lan743x_csr_init(struct lan743x_adapter *adapter)
96 {
97 struct lan743x_csr *csr = &adapter->csr;
98 resource_size_t bar_start, bar_length;
99 int result;
100
101 bar_start = pci_resource_start(adapter->pdev, 0);
102 bar_length = pci_resource_len(adapter->pdev, 0);
103 csr->csr_address = devm_ioremap(&adapter->pdev->dev,
104 bar_start, bar_length);
105 if (!csr->csr_address) {
106 result = -ENOMEM;
107 goto clean_up;
108 }
109
110 csr->id_rev = lan743x_csr_read(adapter, ID_REV);
111 csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
112 netif_info(adapter, probe, adapter->netdev,
113 "ID_REV = 0x%08X, FPGA_REV = %d.%d\n",
114 csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev),
115 FPGA_REV_GET_MINOR_(csr->fpga_rev));
116 if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) {
117 result = -ENODEV;
118 goto clean_up;
119 }
120
121 csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
122 switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) {
123 case ID_REV_CHIP_REV_A0_:
124 csr->flags |= LAN743X_CSR_FLAG_IS_A0;
125 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
126 break;
127 case ID_REV_CHIP_REV_B0_:
128 csr->flags |= LAN743X_CSR_FLAG_IS_B0;
129 break;
130 }
131
132 result = lan743x_csr_light_reset(adapter);
133 if (result)
134 goto clean_up;
135 return 0;
136 clean_up:
137 return result;
138 }
139
140 static void lan743x_intr_software_isr(void *context)
141 {
142 struct lan743x_adapter *adapter = context;
143 struct lan743x_intr *intr = &adapter->intr;
144 u32 int_sts;
145
146 int_sts = lan743x_csr_read(adapter, INT_STS);
147 if (int_sts & INT_BIT_SW_GP_) {
148 lan743x_csr_write(adapter, INT_STS, INT_BIT_SW_GP_);
149 intr->software_isr_flag = 1;
150 }
151 }
152
153 static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags)
154 {
155 struct lan743x_tx *tx = context;
156 struct lan743x_adapter *adapter = tx->adapter;
157 bool enable_flag = true;
158 u32 int_en = 0;
159
160 int_en = lan743x_csr_read(adapter, INT_EN_SET);
161 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
162 lan743x_csr_write(adapter, INT_EN_CLR,
163 INT_BIT_DMA_TX_(tx->channel_number));
164 }
165
166 if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) {
167 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
168 u32 dmac_int_sts;
169 u32 dmac_int_en;
170
171 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
172 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
173 else
174 dmac_int_sts = ioc_bit;
175 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
176 dmac_int_en = lan743x_csr_read(adapter,
177 DMAC_INT_EN_SET);
178 else
179 dmac_int_en = ioc_bit;
180
181 dmac_int_en &= ioc_bit;
182 dmac_int_sts &= dmac_int_en;
183 if (dmac_int_sts & ioc_bit) {
184 napi_schedule(&tx->napi);
185 enable_flag = false;/* poll func will enable later */
186 }
187 }
188
189 if (enable_flag)
190 /* enable isr */
191 lan743x_csr_write(adapter, INT_EN_SET,
192 INT_BIT_DMA_TX_(tx->channel_number));
193 }
194
195 static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags)
196 {
197 struct lan743x_rx *rx = context;
198 struct lan743x_adapter *adapter = rx->adapter;
199 bool enable_flag = true;
200
201 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
202 lan743x_csr_write(adapter, INT_EN_CLR,
203 INT_BIT_DMA_RX_(rx->channel_number));
204 }
205
206 if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) {
207 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number);
208 u32 dmac_int_sts;
209 u32 dmac_int_en;
210
211 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
212 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
213 else
214 dmac_int_sts = rx_frame_bit;
215 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
216 dmac_int_en = lan743x_csr_read(adapter,
217 DMAC_INT_EN_SET);
218 else
219 dmac_int_en = rx_frame_bit;
220
221 dmac_int_en &= rx_frame_bit;
222 dmac_int_sts &= dmac_int_en;
223 if (dmac_int_sts & rx_frame_bit) {
224 napi_schedule(&rx->napi);
225 enable_flag = false;/* poll funct will enable later */
226 }
227 }
228
229 if (enable_flag) {
230 /* enable isr */
231 lan743x_csr_write(adapter, INT_EN_SET,
232 INT_BIT_DMA_RX_(rx->channel_number));
233 }
234 }
235
236 static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
237 {
238 struct lan743x_adapter *adapter = context;
239 unsigned int channel;
240
241 if (int_sts & INT_BIT_ALL_RX_) {
242 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS;
243 channel++) {
244 u32 int_bit = INT_BIT_DMA_RX_(channel);
245
246 if (int_sts & int_bit) {
247 lan743x_rx_isr(&adapter->rx[channel],
248 int_bit, flags);
249 int_sts &= ~int_bit;
250 }
251 }
252 }
253 if (int_sts & INT_BIT_ALL_TX_) {
254 for (channel = 0; channel < LAN743X_USED_TX_CHANNELS;
255 channel++) {
256 u32 int_bit = INT_BIT_DMA_TX_(channel);
257
258 if (int_sts & int_bit) {
259 lan743x_tx_isr(&adapter->tx[channel],
260 int_bit, flags);
261 int_sts &= ~int_bit;
262 }
263 }
264 }
265 if (int_sts & INT_BIT_ALL_OTHER_) {
266 if (int_sts & INT_BIT_SW_GP_) {
267 lan743x_intr_software_isr(adapter);
268 int_sts &= ~INT_BIT_SW_GP_;
269 }
270 if (int_sts & INT_BIT_1588_) {
271 lan743x_ptp_isr(adapter);
272 int_sts &= ~INT_BIT_1588_;
273 }
274 }
275 if (int_sts)
276 lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
277 }
278
279 static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr)
280 {
281 struct lan743x_vector *vector = ptr;
282 struct lan743x_adapter *adapter = vector->adapter;
283 irqreturn_t result = IRQ_NONE;
284 u32 int_enables;
285 u32 int_sts;
286
287 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) {
288 int_sts = lan743x_csr_read(adapter, INT_STS);
289 } else if (vector->flags &
290 (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C |
291 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) {
292 int_sts = lan743x_csr_read(adapter, INT_STS_R2C);
293 } else {
294 /* use mask as implied status */
295 int_sts = vector->int_mask | INT_BIT_MAS_;
296 }
297
298 if (!(int_sts & INT_BIT_MAS_))
299 goto irq_done;
300
301 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR)
302 /* disable vector interrupt */
303 lan743x_csr_write(adapter,
304 INT_VEC_EN_CLR,
305 INT_VEC_EN_(vector->vector_index));
306
307 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR)
308 /* disable master interrupt */
309 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
310
311 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) {
312 int_enables = lan743x_csr_read(adapter, INT_EN_SET);
313 } else {
314 /* use vector mask as implied enable mask */
315 int_enables = vector->int_mask;
316 }
317
318 int_sts &= int_enables;
319 int_sts &= vector->int_mask;
320 if (int_sts) {
321 if (vector->handler) {
322 vector->handler(vector->context,
323 int_sts, vector->flags);
324 } else {
325 /* disable interrupts on this vector */
326 lan743x_csr_write(adapter, INT_EN_CLR,
327 vector->int_mask);
328 }
329 result = IRQ_HANDLED;
330 }
331
332 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET)
333 /* enable master interrupt */
334 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
335
336 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET)
337 /* enable vector interrupt */
338 lan743x_csr_write(adapter,
339 INT_VEC_EN_SET,
340 INT_VEC_EN_(vector->vector_index));
341 irq_done:
342 return result;
343 }
344
345 static int lan743x_intr_test_isr(struct lan743x_adapter *adapter)
346 {
347 struct lan743x_intr *intr = &adapter->intr;
348 int result = -ENODEV;
349 int timeout = 10;
350
351 intr->software_isr_flag = 0;
352
353 /* enable interrupt */
354 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_);
355
356 /* activate interrupt here */
357 lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_);
358 while ((timeout > 0) && (!(intr->software_isr_flag))) {
359 usleep_range(1000, 20000);
360 timeout--;
361 }
362
363 if (intr->software_isr_flag)
364 result = 0;
365
366 /* disable interrupts */
367 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
368 return result;
369 }
370
371 static int lan743x_intr_register_isr(struct lan743x_adapter *adapter,
372 int vector_index, u32 flags,
373 u32 int_mask,
374 lan743x_vector_handler handler,
375 void *context)
376 {
377 struct lan743x_vector *vector = &adapter->intr.vector_list
378 [vector_index];
379 int ret;
380
381 vector->adapter = adapter;
382 vector->flags = flags;
383 vector->vector_index = vector_index;
384 vector->int_mask = int_mask;
385 vector->handler = handler;
386 vector->context = context;
387
388 ret = request_irq(vector->irq,
389 lan743x_intr_entry_isr,
390 (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ?
391 IRQF_SHARED : 0, DRIVER_NAME, vector);
392 if (ret) {
393 vector->handler = NULL;
394 vector->context = NULL;
395 vector->int_mask = 0;
396 vector->flags = 0;
397 }
398 return ret;
399 }
400
401 static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter,
402 int vector_index)
403 {
404 struct lan743x_vector *vector = &adapter->intr.vector_list
405 [vector_index];
406
407 free_irq(vector->irq, vector);
408 vector->handler = NULL;
409 vector->context = NULL;
410 vector->int_mask = 0;
411 vector->flags = 0;
412 }
413
414 static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter,
415 u32 int_mask)
416 {
417 int index;
418
419 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) {
420 if (adapter->intr.vector_list[index].int_mask & int_mask)
421 return adapter->intr.vector_list[index].flags;
422 }
423 return 0;
424 }
425
426 static void lan743x_intr_close(struct lan743x_adapter *adapter)
427 {
428 struct lan743x_intr *intr = &adapter->intr;
429 int index = 0;
430
431 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
432 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF);
433
434 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) {
435 if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) {
436 lan743x_intr_unregister_isr(adapter, index);
437 intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index);
438 }
439 }
440
441 if (intr->flags & INTR_FLAG_MSI_ENABLED) {
442 pci_disable_msi(adapter->pdev);
443 intr->flags &= ~INTR_FLAG_MSI_ENABLED;
444 }
445
446 if (intr->flags & INTR_FLAG_MSIX_ENABLED) {
447 pci_disable_msix(adapter->pdev);
448 intr->flags &= ~INTR_FLAG_MSIX_ENABLED;
449 }
450 }
451
452 static int lan743x_intr_open(struct lan743x_adapter *adapter)
453 {
454 struct msix_entry msix_entries[LAN743X_MAX_VECTOR_COUNT];
455 struct lan743x_intr *intr = &adapter->intr;
456 u32 int_vec_en_auto_clr = 0;
457 u32 int_vec_map0 = 0;
458 u32 int_vec_map1 = 0;
459 int ret = -ENODEV;
460 int index = 0;
461 u32 flags = 0;
462
463 intr->number_of_vectors = 0;
464
465 /* Try to set up MSIX interrupts */
466 memset(&msix_entries[0], 0,
467 sizeof(struct msix_entry) * LAN743X_MAX_VECTOR_COUNT);
468 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++)
469 msix_entries[index].entry = index;
470 ret = pci_enable_msix_range(adapter->pdev,
471 msix_entries, 1,
472 1 + LAN743X_USED_TX_CHANNELS +
473 LAN743X_USED_RX_CHANNELS);
474
475 if (ret > 0) {
476 intr->flags |= INTR_FLAG_MSIX_ENABLED;
477 intr->number_of_vectors = ret;
478 intr->using_vectors = true;
479 for (index = 0; index < intr->number_of_vectors; index++)
480 intr->vector_list[index].irq = msix_entries
481 [index].vector;
482 netif_info(adapter, ifup, adapter->netdev,
483 "using MSIX interrupts, number of vectors = %d\n",
484 intr->number_of_vectors);
485 }
486
487 /* If MSIX failed try to setup using MSI interrupts */
488 if (!intr->number_of_vectors) {
489 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
490 if (!pci_enable_msi(adapter->pdev)) {
491 intr->flags |= INTR_FLAG_MSI_ENABLED;
492 intr->number_of_vectors = 1;
493 intr->using_vectors = true;
494 intr->vector_list[0].irq =
495 adapter->pdev->irq;
496 netif_info(adapter, ifup, adapter->netdev,
497 "using MSI interrupts, number of vectors = %d\n",
498 intr->number_of_vectors);
499 }
500 }
501 }
502
503 /* If MSIX, and MSI failed, setup using legacy interrupt */
504 if (!intr->number_of_vectors) {
505 intr->number_of_vectors = 1;
506 intr->using_vectors = false;
507 intr->vector_list[0].irq = intr->irq;
508 netif_info(adapter, ifup, adapter->netdev,
509 "using legacy interrupts\n");
510 }
511
512 /* At this point we must have at least one irq */
513 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF);
514
515 /* map all interrupts to vector 0 */
516 lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000);
517 lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000);
518 lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000);
519 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
520 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
521 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
522 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
523
524 if (intr->using_vectors) {
525 flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
526 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
527 } else {
528 flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR |
529 LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET |
530 LAN743X_VECTOR_FLAG_IRQ_SHARED;
531 }
532
533 if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
534 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ;
535 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C;
536 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
537 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK;
538 flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C;
539 flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C;
540 }
541
542 ret = lan743x_intr_register_isr(adapter, 0, flags,
543 INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ |
544 INT_BIT_ALL_OTHER_,
545 lan743x_intr_shared_isr, adapter);
546 if (ret)
547 goto clean_up;
548 intr->flags |= INTR_FLAG_IRQ_REQUESTED(0);
549
550 if (intr->using_vectors)
551 lan743x_csr_write(adapter, INT_VEC_EN_SET,
552 INT_VEC_EN_(0));
553
554 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
555 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD);
556 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD);
557 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD);
558 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD);
559 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD);
560 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD);
561 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD);
562 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD);
563 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432);
564 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001);
565 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF);
566 }
567
568 /* enable interrupts */
569 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
570 ret = lan743x_intr_test_isr(adapter);
571 if (ret)
572 goto clean_up;
573
574 if (intr->number_of_vectors > 1) {
575 int number_of_tx_vectors = intr->number_of_vectors - 1;
576
577 if (number_of_tx_vectors > LAN743X_USED_TX_CHANNELS)
578 number_of_tx_vectors = LAN743X_USED_TX_CHANNELS;
579 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
580 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
581 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
582 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
583 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
584 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
585
586 if (adapter->csr.flags &
587 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
588 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
589 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
590 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
591 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
592 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
593 }
594
595 for (index = 0; index < number_of_tx_vectors; index++) {
596 u32 int_bit = INT_BIT_DMA_TX_(index);
597 int vector = index + 1;
598
599 /* map TX interrupt to vector */
600 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector);
601 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1);
602 if (flags &
603 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
604 int_vec_en_auto_clr |= INT_VEC_EN_(vector);
605 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
606 int_vec_en_auto_clr);
607 }
608
609 /* Remove TX interrupt from shared mask */
610 intr->vector_list[0].int_mask &= ~int_bit;
611 ret = lan743x_intr_register_isr(adapter, vector, flags,
612 int_bit, lan743x_tx_isr,
613 &adapter->tx[index]);
614 if (ret)
615 goto clean_up;
616 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
617 if (!(flags &
618 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET))
619 lan743x_csr_write(adapter, INT_VEC_EN_SET,
620 INT_VEC_EN_(vector));
621 }
622 }
623 if ((intr->number_of_vectors - LAN743X_USED_TX_CHANNELS) > 1) {
624 int number_of_rx_vectors = intr->number_of_vectors -
625 LAN743X_USED_TX_CHANNELS - 1;
626
627 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS)
628 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS;
629
630 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
631 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
632 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
633 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
634 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
635 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
636
637 if (adapter->csr.flags &
638 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
639 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
640 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
641 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
642 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
643 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
644 }
645 for (index = 0; index < number_of_rx_vectors; index++) {
646 int vector = index + 1 + LAN743X_USED_TX_CHANNELS;
647 u32 int_bit = INT_BIT_DMA_RX_(index);
648
649 /* map RX interrupt to vector */
650 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector);
651 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0);
652 if (flags &
653 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
654 int_vec_en_auto_clr |= INT_VEC_EN_(vector);
655 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
656 int_vec_en_auto_clr);
657 }
658
659 /* Remove RX interrupt from shared mask */
660 intr->vector_list[0].int_mask &= ~int_bit;
661 ret = lan743x_intr_register_isr(adapter, vector, flags,
662 int_bit, lan743x_rx_isr,
663 &adapter->rx[index]);
664 if (ret)
665 goto clean_up;
666 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
667
668 lan743x_csr_write(adapter, INT_VEC_EN_SET,
669 INT_VEC_EN_(vector));
670 }
671 }
672 return 0;
673
674 clean_up:
675 lan743x_intr_close(adapter);
676 return ret;
677 }
678
679 static int lan743x_dp_write(struct lan743x_adapter *adapter,
680 u32 select, u32 addr, u32 length, u32 *buf)
681 {
682 int ret = -EIO;
683 u32 dp_sel;
684 int i;
685
686 mutex_lock(&adapter->dp_lock);
687 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
688 1, 40, 100, 100))
689 goto unlock;
690 dp_sel = lan743x_csr_read(adapter, DP_SEL);
691 dp_sel &= ~DP_SEL_MASK_;
692 dp_sel |= select;
693 lan743x_csr_write(adapter, DP_SEL, dp_sel);
694
695 for (i = 0; i < length; i++) {
696 lan743x_csr_write(adapter, DP_ADDR, addr + i);
697 lan743x_csr_write(adapter, DP_DATA_0, buf[i]);
698 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_);
699 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
700 1, 40, 100, 100))
701 goto unlock;
702 }
703 ret = 0;
704
705 unlock:
706 mutex_unlock(&adapter->dp_lock);
707 return ret;
708 }
709
710 static u32 lan743x_mac_mii_access(u16 id, u16 index, int read)
711 {
712 u32 ret;
713
714 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
715 MAC_MII_ACC_PHY_ADDR_MASK_;
716 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) &
717 MAC_MII_ACC_MIIRINDA_MASK_;
718
719 if (read)
720 ret |= MAC_MII_ACC_MII_READ_;
721 else
722 ret |= MAC_MII_ACC_MII_WRITE_;
723 ret |= MAC_MII_ACC_MII_BUSY_;
724
725 return ret;
726 }
727
728 static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter)
729 {
730 u32 data;
731
732 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data,
733 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000);
734 }
735
736 static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index)
737 {
738 struct lan743x_adapter *adapter = bus->priv;
739 u32 val, mii_access;
740 int ret;
741
742 /* comfirm MII not busy */
743 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
744 if (ret < 0)
745 return ret;
746
747 /* set the address, index & direction (read from PHY) */
748 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ);
749 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
750 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
751 if (ret < 0)
752 return ret;
753
754 val = lan743x_csr_read(adapter, MAC_MII_DATA);
755 return (int)(val & 0xFFFF);
756 }
757
758 static int lan743x_mdiobus_write(struct mii_bus *bus,
759 int phy_id, int index, u16 regval)
760 {
761 struct lan743x_adapter *adapter = bus->priv;
762 u32 val, mii_access;
763 int ret;
764
765 /* confirm MII not busy */
766 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
767 if (ret < 0)
768 return ret;
769 val = (u32)regval;
770 lan743x_csr_write(adapter, MAC_MII_DATA, val);
771
772 /* set the address, index & direction (write to PHY) */
773 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE);
774 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
775 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
776 return ret;
777 }
778
779 static void lan743x_mac_set_address(struct lan743x_adapter *adapter,
780 u8 *addr)
781 {
782 u32 addr_lo, addr_hi;
783
784 addr_lo = addr[0] |
785 addr[1] << 8 |
786 addr[2] << 16 |
787 addr[3] << 24;
788 addr_hi = addr[4] |
789 addr[5] << 8;
790 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo);
791 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi);
792
793 ether_addr_copy(adapter->mac_address, addr);
794 netif_info(adapter, drv, adapter->netdev,
795 "MAC address set to %pM\n", addr);
796 }
797
798 static int lan743x_mac_init(struct lan743x_adapter *adapter)
799 {
800 bool mac_address_valid = true;
801 struct net_device *netdev;
802 u32 mac_addr_hi = 0;
803 u32 mac_addr_lo = 0;
804 u32 data;
805
806 netdev = adapter->netdev;
807
808 /* setup auto duplex, and speed detection */
809 data = lan743x_csr_read(adapter, MAC_CR);
810 data |= MAC_CR_ADD_ | MAC_CR_ASD_;
811 data |= MAC_CR_CNTR_RST_;
812 lan743x_csr_write(adapter, MAC_CR, data);
813
814 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH);
815 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL);
816 adapter->mac_address[0] = mac_addr_lo & 0xFF;
817 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF;
818 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF;
819 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF;
820 adapter->mac_address[4] = mac_addr_hi & 0xFF;
821 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF;
822
823 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) &&
824 mac_addr_lo == 0xFFFFFFFF) {
825 mac_address_valid = false;
826 } else if (!is_valid_ether_addr(adapter->mac_address)) {
827 mac_address_valid = false;
828 }
829
830 if (!mac_address_valid)
831 eth_random_addr(adapter->mac_address);
832 lan743x_mac_set_address(adapter, adapter->mac_address);
833 ether_addr_copy(netdev->dev_addr, adapter->mac_address);
834 return 0;
835 }
836
837 static int lan743x_mac_open(struct lan743x_adapter *adapter)
838 {
839 int ret = 0;
840 u32 temp;
841
842 temp = lan743x_csr_read(adapter, MAC_RX);
843 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_);
844 temp = lan743x_csr_read(adapter, MAC_TX);
845 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_);
846 return ret;
847 }
848
849 static void lan743x_mac_close(struct lan743x_adapter *adapter)
850 {
851 u32 temp;
852
853 temp = lan743x_csr_read(adapter, MAC_TX);
854 temp &= ~MAC_TX_TXEN_;
855 lan743x_csr_write(adapter, MAC_TX, temp);
856 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_,
857 1, 1000, 20000, 100);
858
859 temp = lan743x_csr_read(adapter, MAC_RX);
860 temp &= ~MAC_RX_RXEN_;
861 lan743x_csr_write(adapter, MAC_RX, temp);
862 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
863 1, 1000, 20000, 100);
864 }
865
866 static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter,
867 bool tx_enable, bool rx_enable)
868 {
869 u32 flow_setting = 0;
870
871 /* set maximum pause time because when fifo space frees
872 * up a zero value pause frame will be sent to release the pause
873 */
874 flow_setting = MAC_FLOW_CR_FCPT_MASK_;
875 if (tx_enable)
876 flow_setting |= MAC_FLOW_CR_TX_FCEN_;
877 if (rx_enable)
878 flow_setting |= MAC_FLOW_CR_RX_FCEN_;
879 lan743x_csr_write(adapter, MAC_FLOW, flow_setting);
880 }
881
882 static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu)
883 {
884 int enabled = 0;
885 u32 mac_rx = 0;
886
887 mac_rx = lan743x_csr_read(adapter, MAC_RX);
888 if (mac_rx & MAC_RX_RXEN_) {
889 enabled = 1;
890 if (mac_rx & MAC_RX_RXD_) {
891 lan743x_csr_write(adapter, MAC_RX, mac_rx);
892 mac_rx &= ~MAC_RX_RXD_;
893 }
894 mac_rx &= ~MAC_RX_RXEN_;
895 lan743x_csr_write(adapter, MAC_RX, mac_rx);
896 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
897 1, 1000, 20000, 100);
898 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_);
899 }
900
901 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_);
902 mac_rx |= (((new_mtu + ETH_HLEN + 4) << MAC_RX_MAX_SIZE_SHIFT_) &
903 MAC_RX_MAX_SIZE_MASK_);
904 lan743x_csr_write(adapter, MAC_RX, mac_rx);
905
906 if (enabled) {
907 mac_rx |= MAC_RX_RXEN_;
908 lan743x_csr_write(adapter, MAC_RX, mac_rx);
909 }
910 return 0;
911 }
912
913 /* PHY */
914 static int lan743x_phy_reset(struct lan743x_adapter *adapter)
915 {
916 u32 data;
917
918 /* Only called with in probe, and before mdiobus_register */
919
920 data = lan743x_csr_read(adapter, PMT_CTL);
921 data |= PMT_CTL_ETH_PHY_RST_;
922 lan743x_csr_write(adapter, PMT_CTL, data);
923
924 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data,
925 (!(data & PMT_CTL_ETH_PHY_RST_) &&
926 (data & PMT_CTL_READY_)),
927 50000, 1000000);
928 }
929
930 static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter,
931 u8 duplex, u16 local_adv,
932 u16 remote_adv)
933 {
934 struct lan743x_phy *phy = &adapter->phy;
935 u8 cap;
936
937 if (phy->fc_autoneg)
938 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv);
939 else
940 cap = phy->fc_request_control;
941
942 lan743x_mac_flow_ctrl_set_enables(adapter,
943 cap & FLOW_CTRL_TX,
944 cap & FLOW_CTRL_RX);
945 }
946
947 static int lan743x_phy_init(struct lan743x_adapter *adapter)
948 {
949 return lan743x_phy_reset(adapter);
950 }
951
952 static void lan743x_phy_link_status_change(struct net_device *netdev)
953 {
954 struct lan743x_adapter *adapter = netdev_priv(netdev);
955 struct phy_device *phydev = netdev->phydev;
956
957 phy_print_status(phydev);
958 if (phydev->state == PHY_RUNNING) {
959 struct ethtool_link_ksettings ksettings;
960 int remote_advertisement = 0;
961 int local_advertisement = 0;
962
963 memset(&ksettings, 0, sizeof(ksettings));
964 phy_ethtool_get_link_ksettings(netdev, &ksettings);
965 local_advertisement = phy_read(phydev, MII_ADVERTISE);
966 if (local_advertisement < 0)
967 return;
968
969 remote_advertisement = phy_read(phydev, MII_LPA);
970 if (remote_advertisement < 0)
971 return;
972
973 lan743x_phy_update_flowcontrol(adapter,
974 ksettings.base.duplex,
975 local_advertisement,
976 remote_advertisement);
977 lan743x_ptp_update_latency(adapter, ksettings.base.speed);
978 }
979 }
980
981 static void lan743x_phy_close(struct lan743x_adapter *adapter)
982 {
983 struct net_device *netdev = adapter->netdev;
984
985 phy_stop(netdev->phydev);
986 phy_disconnect(netdev->phydev);
987 netdev->phydev = NULL;
988 }
989
990 static int lan743x_phy_open(struct lan743x_adapter *adapter)
991 {
992 struct lan743x_phy *phy = &adapter->phy;
993 struct phy_device *phydev;
994 struct net_device *netdev;
995 int ret = -EIO;
996
997 netdev = adapter->netdev;
998 phydev = phy_find_first(adapter->mdiobus);
999 if (!phydev)
1000 goto return_error;
1001
1002 ret = phy_connect_direct(netdev, phydev,
1003 lan743x_phy_link_status_change,
1004 PHY_INTERFACE_MODE_GMII);
1005 if (ret)
1006 goto return_error;
1007
1008 /* MAC doesn't support 1000T Half */
1009 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
1010
1011 /* support both flow controls */
1012 phy_support_asym_pause(phydev);
1013 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
1014 phy->fc_autoneg = phydev->autoneg;
1015
1016 phy_start(phydev);
1017 phy_start_aneg(phydev);
1018 return 0;
1019
1020 return_error:
1021 return ret;
1022 }
1023
1024 static void lan743x_rfe_open(struct lan743x_adapter *adapter)
1025 {
1026 lan743x_csr_write(adapter, RFE_RSS_CFG,
1027 RFE_RSS_CFG_UDP_IPV6_EX_ |
1028 RFE_RSS_CFG_TCP_IPV6_EX_ |
1029 RFE_RSS_CFG_IPV6_EX_ |
1030 RFE_RSS_CFG_UDP_IPV6_ |
1031 RFE_RSS_CFG_TCP_IPV6_ |
1032 RFE_RSS_CFG_IPV6_ |
1033 RFE_RSS_CFG_UDP_IPV4_ |
1034 RFE_RSS_CFG_TCP_IPV4_ |
1035 RFE_RSS_CFG_IPV4_ |
1036 RFE_RSS_CFG_VALID_HASH_BITS_ |
1037 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ |
1038 RFE_RSS_CFG_RSS_HASH_STORE_ |
1039 RFE_RSS_CFG_RSS_ENABLE_);
1040 }
1041
1042 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter)
1043 {
1044 u8 *mac_addr;
1045 u32 mac_addr_hi = 0;
1046 u32 mac_addr_lo = 0;
1047
1048 /* Add mac address to perfect Filter */
1049 mac_addr = adapter->mac_address;
1050 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) |
1051 (((u32)(mac_addr[1])) << 8) |
1052 (((u32)(mac_addr[2])) << 16) |
1053 (((u32)(mac_addr[3])) << 24));
1054 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) |
1055 (((u32)(mac_addr[5])) << 8));
1056
1057 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo);
1058 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0),
1059 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_);
1060 }
1061
1062 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter)
1063 {
1064 struct net_device *netdev = adapter->netdev;
1065 u32 hash_table[DP_SEL_VHF_HASH_LEN];
1066 u32 rfctl;
1067 u32 data;
1068
1069 rfctl = lan743x_csr_read(adapter, RFE_CTL);
1070 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ |
1071 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
1072 rfctl |= RFE_CTL_AB_;
1073 if (netdev->flags & IFF_PROMISC) {
1074 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_;
1075 } else {
1076 if (netdev->flags & IFF_ALLMULTI)
1077 rfctl |= RFE_CTL_AM_;
1078 }
1079
1080 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32));
1081 if (netdev_mc_count(netdev)) {
1082 struct netdev_hw_addr *ha;
1083 int i;
1084
1085 rfctl |= RFE_CTL_DA_PERFECT_;
1086 i = 1;
1087 netdev_for_each_mc_addr(ha, netdev) {
1088 /* set first 32 into Perfect Filter */
1089 if (i < 33) {
1090 lan743x_csr_write(adapter,
1091 RFE_ADDR_FILT_HI(i), 0);
1092 data = ha->addr[3];
1093 data = ha->addr[2] | (data << 8);
1094 data = ha->addr[1] | (data << 8);
1095 data = ha->addr[0] | (data << 8);
1096 lan743x_csr_write(adapter,
1097 RFE_ADDR_FILT_LO(i), data);
1098 data = ha->addr[5];
1099 data = ha->addr[4] | (data << 8);
1100 data |= RFE_ADDR_FILT_HI_VALID_;
1101 lan743x_csr_write(adapter,
1102 RFE_ADDR_FILT_HI(i), data);
1103 } else {
1104 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >>
1105 23) & 0x1FF;
1106 hash_table[bitnum / 32] |= (1 << (bitnum % 32));
1107 rfctl |= RFE_CTL_MCAST_HASH_;
1108 }
1109 i++;
1110 }
1111 }
1112
1113 lan743x_dp_write(adapter, DP_SEL_RFE_RAM,
1114 DP_SEL_VHF_VLAN_LEN,
1115 DP_SEL_VHF_HASH_LEN, hash_table);
1116 lan743x_csr_write(adapter, RFE_CTL, rfctl);
1117 }
1118
1119 static int lan743x_dmac_init(struct lan743x_adapter *adapter)
1120 {
1121 u32 data = 0;
1122
1123 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_);
1124 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_,
1125 0, 1000, 20000, 100);
1126 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) {
1127 case DMA_DESCRIPTOR_SPACING_16:
1128 data = DMAC_CFG_MAX_DSPACE_16_;
1129 break;
1130 case DMA_DESCRIPTOR_SPACING_32:
1131 data = DMAC_CFG_MAX_DSPACE_32_;
1132 break;
1133 case DMA_DESCRIPTOR_SPACING_64:
1134 data = DMAC_CFG_MAX_DSPACE_64_;
1135 break;
1136 case DMA_DESCRIPTOR_SPACING_128:
1137 data = DMAC_CFG_MAX_DSPACE_128_;
1138 break;
1139 default:
1140 return -EPERM;
1141 }
1142 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1143 data |= DMAC_CFG_COAL_EN_;
1144 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_;
1145 data |= DMAC_CFG_MAX_READ_REQ_SET_(6);
1146 lan743x_csr_write(adapter, DMAC_CFG, data);
1147 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1);
1148 data |= DMAC_COAL_CFG_TIMER_TX_START_;
1149 data |= DMAC_COAL_CFG_FLUSH_INTS_;
1150 data |= DMAC_COAL_CFG_INT_EXIT_COAL_;
1151 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_;
1152 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A);
1153 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C);
1154 lan743x_csr_write(adapter, DMAC_COAL_CFG, data);
1155 data = DMAC_OBFF_TX_THRES_SET_(0x08);
1156 data |= DMAC_OBFF_RX_THRES_SET_(0x0A);
1157 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data);
1158 return 0;
1159 }
1160
1161 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter,
1162 int tx_channel)
1163 {
1164 u32 dmac_cmd = 0;
1165
1166 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1167 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1168 DMAC_CMD_START_T_(tx_channel)),
1169 (dmac_cmd &
1170 DMAC_CMD_STOP_T_(tx_channel)));
1171 }
1172
1173 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter,
1174 int tx_channel)
1175 {
1176 int timeout = 100;
1177 int result = 0;
1178
1179 while (timeout &&
1180 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) ==
1181 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1182 usleep_range(1000, 20000);
1183 timeout--;
1184 }
1185 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1186 result = -ENODEV;
1187 return result;
1188 }
1189
1190 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter,
1191 int rx_channel)
1192 {
1193 u32 dmac_cmd = 0;
1194
1195 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1196 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1197 DMAC_CMD_START_R_(rx_channel)),
1198 (dmac_cmd &
1199 DMAC_CMD_STOP_R_(rx_channel)));
1200 }
1201
1202 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter,
1203 int rx_channel)
1204 {
1205 int timeout = 100;
1206 int result = 0;
1207
1208 while (timeout &&
1209 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) ==
1210 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1211 usleep_range(1000, 20000);
1212 timeout--;
1213 }
1214 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1215 result = -ENODEV;
1216 return result;
1217 }
1218
1219 static void lan743x_tx_release_desc(struct lan743x_tx *tx,
1220 int descriptor_index, bool cleanup)
1221 {
1222 struct lan743x_tx_buffer_info *buffer_info = NULL;
1223 struct lan743x_tx_descriptor *descriptor = NULL;
1224 u32 descriptor_type = 0;
1225 bool ignore_sync;
1226
1227 descriptor = &tx->ring_cpu_ptr[descriptor_index];
1228 buffer_info = &tx->buffer_info[descriptor_index];
1229 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE))
1230 goto done;
1231
1232 descriptor_type = (descriptor->data0) &
1233 TX_DESC_DATA0_DTYPE_MASK_;
1234 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_)
1235 goto clean_up_data_descriptor;
1236 else
1237 goto clear_active;
1238
1239 clean_up_data_descriptor:
1240 if (buffer_info->dma_ptr) {
1241 if (buffer_info->flags &
1242 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) {
1243 dma_unmap_page(&tx->adapter->pdev->dev,
1244 buffer_info->dma_ptr,
1245 buffer_info->buffer_length,
1246 DMA_TO_DEVICE);
1247 } else {
1248 dma_unmap_single(&tx->adapter->pdev->dev,
1249 buffer_info->dma_ptr,
1250 buffer_info->buffer_length,
1251 DMA_TO_DEVICE);
1252 }
1253 buffer_info->dma_ptr = 0;
1254 buffer_info->buffer_length = 0;
1255 }
1256 if (!buffer_info->skb)
1257 goto clear_active;
1258
1259 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) {
1260 dev_kfree_skb(buffer_info->skb);
1261 goto clear_skb;
1262 }
1263
1264 if (cleanup) {
1265 lan743x_ptp_unrequest_tx_timestamp(tx->adapter);
1266 dev_kfree_skb(buffer_info->skb);
1267 } else {
1268 ignore_sync = (buffer_info->flags &
1269 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0;
1270 lan743x_ptp_tx_timestamp_skb(tx->adapter,
1271 buffer_info->skb, ignore_sync);
1272 }
1273
1274 clear_skb:
1275 buffer_info->skb = NULL;
1276
1277 clear_active:
1278 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE;
1279
1280 done:
1281 memset(buffer_info, 0, sizeof(*buffer_info));
1282 memset(descriptor, 0, sizeof(*descriptor));
1283 }
1284
1285 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index)
1286 {
1287 return ((++index) % tx->ring_size);
1288 }
1289
1290 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx)
1291 {
1292 while ((*tx->head_cpu_ptr) != (tx->last_head)) {
1293 lan743x_tx_release_desc(tx, tx->last_head, false);
1294 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1295 }
1296 }
1297
1298 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx)
1299 {
1300 u32 original_head = 0;
1301
1302 original_head = tx->last_head;
1303 do {
1304 lan743x_tx_release_desc(tx, tx->last_head, true);
1305 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1306 } while (tx->last_head != original_head);
1307 memset(tx->ring_cpu_ptr, 0,
1308 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size));
1309 memset(tx->buffer_info, 0,
1310 sizeof(*tx->buffer_info) * (tx->ring_size));
1311 }
1312
1313 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx,
1314 struct sk_buff *skb)
1315 {
1316 int result = 1; /* 1 for the main skb buffer */
1317 int nr_frags = 0;
1318
1319 if (skb_is_gso(skb))
1320 result++; /* requires an extension descriptor */
1321 nr_frags = skb_shinfo(skb)->nr_frags;
1322 result += nr_frags; /* 1 for each fragment buffer */
1323 return result;
1324 }
1325
1326 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx)
1327 {
1328 int last_head = tx->last_head;
1329 int last_tail = tx->last_tail;
1330
1331 if (last_tail >= last_head)
1332 return tx->ring_size - last_tail + last_head - 1;
1333 else
1334 return last_head - last_tail - 1;
1335 }
1336
1337 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
1338 bool enable_timestamping,
1339 bool enable_onestep_sync)
1340 {
1341 if (enable_timestamping)
1342 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED;
1343 else
1344 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED;
1345 if (enable_onestep_sync)
1346 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC;
1347 else
1348 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC;
1349 }
1350
1351 static int lan743x_tx_frame_start(struct lan743x_tx *tx,
1352 unsigned char *first_buffer,
1353 unsigned int first_buffer_length,
1354 unsigned int frame_length,
1355 bool time_stamp,
1356 bool check_sum)
1357 {
1358 /* called only from within lan743x_tx_xmit_frame.
1359 * assuming tx->ring_lock has already been acquired.
1360 */
1361 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1362 struct lan743x_tx_buffer_info *buffer_info = NULL;
1363 struct lan743x_adapter *adapter = tx->adapter;
1364 struct device *dev = &adapter->pdev->dev;
1365 dma_addr_t dma_ptr;
1366
1367 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS;
1368 tx->frame_first = tx->last_tail;
1369 tx->frame_tail = tx->frame_first;
1370
1371 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1372 buffer_info = &tx->buffer_info[tx->frame_tail];
1373 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length,
1374 DMA_TO_DEVICE);
1375 if (dma_mapping_error(dev, dma_ptr))
1376 return -ENOMEM;
1377
1378 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr);
1379 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr);
1380 tx_descriptor->data3 = (frame_length << 16) &
1381 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_;
1382
1383 buffer_info->skb = NULL;
1384 buffer_info->dma_ptr = dma_ptr;
1385 buffer_info->buffer_length = first_buffer_length;
1386 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1387
1388 tx->frame_data0 = (first_buffer_length &
1389 TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1390 TX_DESC_DATA0_DTYPE_DATA_ |
1391 TX_DESC_DATA0_FS_ |
1392 TX_DESC_DATA0_FCS_;
1393 if (time_stamp)
1394 tx->frame_data0 |= TX_DESC_DATA0_TSE_;
1395
1396 if (check_sum)
1397 tx->frame_data0 |= TX_DESC_DATA0_ICE_ |
1398 TX_DESC_DATA0_IPE_ |
1399 TX_DESC_DATA0_TPE_;
1400
1401 /* data0 will be programmed in one of other frame assembler functions */
1402 return 0;
1403 }
1404
1405 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx,
1406 unsigned int frame_length)
1407 {
1408 /* called only from within lan743x_tx_xmit_frame.
1409 * assuming tx->ring_lock has already been acquired.
1410 */
1411 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1412 struct lan743x_tx_buffer_info *buffer_info = NULL;
1413
1414 /* wrap up previous descriptor */
1415 tx->frame_data0 |= TX_DESC_DATA0_EXT_;
1416 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1417 tx_descriptor->data0 = tx->frame_data0;
1418
1419 /* move to next descriptor */
1420 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1421 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1422 buffer_info = &tx->buffer_info[tx->frame_tail];
1423
1424 /* add extension descriptor */
1425 tx_descriptor->data1 = 0;
1426 tx_descriptor->data2 = 0;
1427 tx_descriptor->data3 = 0;
1428
1429 buffer_info->skb = NULL;
1430 buffer_info->dma_ptr = 0;
1431 buffer_info->buffer_length = 0;
1432 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1433
1434 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) |
1435 TX_DESC_DATA0_DTYPE_EXT_ |
1436 TX_DESC_DATA0_EXT_LSO_;
1437
1438 /* data0 will be programmed in one of other frame assembler functions */
1439 }
1440
1441 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx,
1442 const struct skb_frag_struct *fragment,
1443 unsigned int frame_length)
1444 {
1445 /* called only from within lan743x_tx_xmit_frame
1446 * assuming tx->ring_lock has already been acquired
1447 */
1448 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1449 struct lan743x_tx_buffer_info *buffer_info = NULL;
1450 struct lan743x_adapter *adapter = tx->adapter;
1451 struct device *dev = &adapter->pdev->dev;
1452 unsigned int fragment_length = 0;
1453 dma_addr_t dma_ptr;
1454
1455 fragment_length = skb_frag_size(fragment);
1456 if (!fragment_length)
1457 return 0;
1458
1459 /* wrap up previous descriptor */
1460 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1461 tx_descriptor->data0 = tx->frame_data0;
1462
1463 /* move to next descriptor */
1464 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1465 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1466 buffer_info = &tx->buffer_info[tx->frame_tail];
1467 dma_ptr = skb_frag_dma_map(dev, fragment,
1468 0, fragment_length,
1469 DMA_TO_DEVICE);
1470 if (dma_mapping_error(dev, dma_ptr)) {
1471 int desc_index;
1472
1473 /* cleanup all previously setup descriptors */
1474 desc_index = tx->frame_first;
1475 while (desc_index != tx->frame_tail) {
1476 lan743x_tx_release_desc(tx, desc_index, true);
1477 desc_index = lan743x_tx_next_index(tx, desc_index);
1478 }
1479 dma_wmb();
1480 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1481 tx->frame_first = 0;
1482 tx->frame_data0 = 0;
1483 tx->frame_tail = 0;
1484 return -ENOMEM;
1485 }
1486
1487 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr);
1488 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr);
1489 tx_descriptor->data3 = (frame_length << 16) &
1490 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_;
1491
1492 buffer_info->skb = NULL;
1493 buffer_info->dma_ptr = dma_ptr;
1494 buffer_info->buffer_length = fragment_length;
1495 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1496 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT;
1497
1498 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1499 TX_DESC_DATA0_DTYPE_DATA_ |
1500 TX_DESC_DATA0_FCS_;
1501
1502 /* data0 will be programmed in one of other frame assembler functions */
1503 return 0;
1504 }
1505
1506 static void lan743x_tx_frame_end(struct lan743x_tx *tx,
1507 struct sk_buff *skb,
1508 bool time_stamp,
1509 bool ignore_sync)
1510 {
1511 /* called only from within lan743x_tx_xmit_frame
1512 * assuming tx->ring_lock has already been acquired
1513 */
1514 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1515 struct lan743x_tx_buffer_info *buffer_info = NULL;
1516 struct lan743x_adapter *adapter = tx->adapter;
1517 u32 tx_tail_flags = 0;
1518
1519 /* wrap up previous descriptor */
1520 tx->frame_data0 |= TX_DESC_DATA0_LS_;
1521 tx->frame_data0 |= TX_DESC_DATA0_IOC_;
1522
1523 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1524 buffer_info = &tx->buffer_info[tx->frame_tail];
1525 buffer_info->skb = skb;
1526 if (time_stamp)
1527 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED;
1528 if (ignore_sync)
1529 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC;
1530
1531 tx_descriptor->data0 = tx->frame_data0;
1532 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1533 tx->last_tail = tx->frame_tail;
1534
1535 dma_wmb();
1536
1537 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
1538 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_;
1539 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)
1540 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ |
1541 TX_TAIL_SET_TOP_INT_EN_;
1542
1543 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
1544 tx_tail_flags | tx->frame_tail);
1545 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1546 }
1547
1548 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
1549 struct sk_buff *skb)
1550 {
1551 int required_number_of_descriptors = 0;
1552 unsigned int start_frame_length = 0;
1553 unsigned int frame_length = 0;
1554 unsigned int head_length = 0;
1555 unsigned long irq_flags = 0;
1556 bool do_timestamp = false;
1557 bool ignore_sync = false;
1558 int nr_frags = 0;
1559 bool gso = false;
1560 int j;
1561
1562 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb);
1563
1564 spin_lock_irqsave(&tx->ring_lock, irq_flags);
1565 if (required_number_of_descriptors >
1566 lan743x_tx_get_avail_desc(tx)) {
1567 if (required_number_of_descriptors > (tx->ring_size - 1)) {
1568 dev_kfree_skb(skb);
1569 } else {
1570 /* save to overflow buffer */
1571 tx->overflow_skb = skb;
1572 netif_stop_queue(tx->adapter->netdev);
1573 }
1574 goto unlock;
1575 }
1576
1577 /* space available, transmit skb */
1578 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
1579 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) &&
1580 (lan743x_ptp_request_tx_timestamp(tx->adapter))) {
1581 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1582 do_timestamp = true;
1583 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC)
1584 ignore_sync = true;
1585 }
1586 head_length = skb_headlen(skb);
1587 frame_length = skb_pagelen(skb);
1588 nr_frags = skb_shinfo(skb)->nr_frags;
1589 start_frame_length = frame_length;
1590 gso = skb_is_gso(skb);
1591 if (gso) {
1592 start_frame_length = max(skb_shinfo(skb)->gso_size,
1593 (unsigned short)8);
1594 }
1595
1596 if (lan743x_tx_frame_start(tx,
1597 skb->data, head_length,
1598 start_frame_length,
1599 do_timestamp,
1600 skb->ip_summed == CHECKSUM_PARTIAL)) {
1601 dev_kfree_skb(skb);
1602 goto unlock;
1603 }
1604
1605 if (gso)
1606 lan743x_tx_frame_add_lso(tx, frame_length);
1607
1608 if (nr_frags <= 0)
1609 goto finish;
1610
1611 for (j = 0; j < nr_frags; j++) {
1612 const struct skb_frag_struct *frag;
1613
1614 frag = &(skb_shinfo(skb)->frags[j]);
1615 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) {
1616 /* upon error no need to call
1617 * lan743x_tx_frame_end
1618 * frame assembler clean up was performed inside
1619 * lan743x_tx_frame_add_fragment
1620 */
1621 dev_kfree_skb(skb);
1622 goto unlock;
1623 }
1624 }
1625
1626 finish:
1627 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync);
1628
1629 unlock:
1630 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
1631 return NETDEV_TX_OK;
1632 }
1633
1634 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight)
1635 {
1636 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi);
1637 struct lan743x_adapter *adapter = tx->adapter;
1638 bool start_transmitter = false;
1639 unsigned long irq_flags = 0;
1640 u32 ioc_bit = 0;
1641 u32 int_sts = 0;
1642
1643 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
1644 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
1645 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C)
1646 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit);
1647 spin_lock_irqsave(&tx->ring_lock, irq_flags);
1648
1649 /* clean up tx ring */
1650 lan743x_tx_release_completed_descriptors(tx);
1651 if (netif_queue_stopped(adapter->netdev)) {
1652 if (tx->overflow_skb) {
1653 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <=
1654 lan743x_tx_get_avail_desc(tx))
1655 start_transmitter = true;
1656 } else {
1657 netif_wake_queue(adapter->netdev);
1658 }
1659 }
1660 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
1661
1662 if (start_transmitter) {
1663 /* space is now available, transmit overflow skb */
1664 lan743x_tx_xmit_frame(tx, tx->overflow_skb);
1665 tx->overflow_skb = NULL;
1666 netif_wake_queue(adapter->netdev);
1667 }
1668
1669 if (!napi_complete(napi))
1670 goto done;
1671
1672 /* enable isr */
1673 lan743x_csr_write(adapter, INT_EN_SET,
1674 INT_BIT_DMA_TX_(tx->channel_number));
1675 lan743x_csr_read(adapter, INT_STS);
1676
1677 done:
1678 return 0;
1679 }
1680
1681 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx)
1682 {
1683 if (tx->head_cpu_ptr) {
1684 pci_free_consistent(tx->adapter->pdev,
1685 sizeof(*tx->head_cpu_ptr),
1686 (void *)(tx->head_cpu_ptr),
1687 tx->head_dma_ptr);
1688 tx->head_cpu_ptr = NULL;
1689 tx->head_dma_ptr = 0;
1690 }
1691 kfree(tx->buffer_info);
1692 tx->buffer_info = NULL;
1693
1694 if (tx->ring_cpu_ptr) {
1695 pci_free_consistent(tx->adapter->pdev,
1696 tx->ring_allocation_size,
1697 tx->ring_cpu_ptr,
1698 tx->ring_dma_ptr);
1699 tx->ring_allocation_size = 0;
1700 tx->ring_cpu_ptr = NULL;
1701 tx->ring_dma_ptr = 0;
1702 }
1703 tx->ring_size = 0;
1704 }
1705
1706 static int lan743x_tx_ring_init(struct lan743x_tx *tx)
1707 {
1708 size_t ring_allocation_size = 0;
1709 void *cpu_ptr = NULL;
1710 dma_addr_t dma_ptr;
1711 int ret = -ENOMEM;
1712
1713 tx->ring_size = LAN743X_TX_RING_SIZE;
1714 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) {
1715 ret = -EINVAL;
1716 goto cleanup;
1717 }
1718 ring_allocation_size = ALIGN(tx->ring_size *
1719 sizeof(struct lan743x_tx_descriptor),
1720 PAGE_SIZE);
1721 dma_ptr = 0;
1722 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev,
1723 ring_allocation_size, &dma_ptr);
1724 if (!cpu_ptr) {
1725 ret = -ENOMEM;
1726 goto cleanup;
1727 }
1728
1729 tx->ring_allocation_size = ring_allocation_size;
1730 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr;
1731 tx->ring_dma_ptr = dma_ptr;
1732
1733 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL);
1734 if (!cpu_ptr) {
1735 ret = -ENOMEM;
1736 goto cleanup;
1737 }
1738 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr;
1739 dma_ptr = 0;
1740 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev,
1741 sizeof(*tx->head_cpu_ptr), &dma_ptr);
1742 if (!cpu_ptr) {
1743 ret = -ENOMEM;
1744 goto cleanup;
1745 }
1746
1747 tx->head_cpu_ptr = cpu_ptr;
1748 tx->head_dma_ptr = dma_ptr;
1749 if (tx->head_dma_ptr & 0x3) {
1750 ret = -ENOMEM;
1751 goto cleanup;
1752 }
1753
1754 return 0;
1755
1756 cleanup:
1757 lan743x_tx_ring_cleanup(tx);
1758 return ret;
1759 }
1760
1761 static void lan743x_tx_close(struct lan743x_tx *tx)
1762 {
1763 struct lan743x_adapter *adapter = tx->adapter;
1764
1765 lan743x_csr_write(adapter,
1766 DMAC_CMD,
1767 DMAC_CMD_STOP_T_(tx->channel_number));
1768 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number);
1769
1770 lan743x_csr_write(adapter,
1771 DMAC_INT_EN_CLR,
1772 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
1773 lan743x_csr_write(adapter, INT_EN_CLR,
1774 INT_BIT_DMA_TX_(tx->channel_number));
1775 napi_disable(&tx->napi);
1776 netif_napi_del(&tx->napi);
1777
1778 lan743x_csr_write(adapter, FCT_TX_CTL,
1779 FCT_TX_CTL_DIS_(tx->channel_number));
1780 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
1781 FCT_TX_CTL_EN_(tx->channel_number),
1782 0, 1000, 20000, 100);
1783
1784 lan743x_tx_release_all_descriptors(tx);
1785
1786 if (tx->overflow_skb) {
1787 dev_kfree_skb(tx->overflow_skb);
1788 tx->overflow_skb = NULL;
1789 }
1790
1791 lan743x_tx_ring_cleanup(tx);
1792 }
1793
1794 static int lan743x_tx_open(struct lan743x_tx *tx)
1795 {
1796 struct lan743x_adapter *adapter = NULL;
1797 u32 data = 0;
1798 int ret;
1799
1800 adapter = tx->adapter;
1801 ret = lan743x_tx_ring_init(tx);
1802 if (ret)
1803 return ret;
1804
1805 /* initialize fifo */
1806 lan743x_csr_write(adapter, FCT_TX_CTL,
1807 FCT_TX_CTL_RESET_(tx->channel_number));
1808 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
1809 FCT_TX_CTL_RESET_(tx->channel_number),
1810 0, 1000, 20000, 100);
1811
1812 /* enable fifo */
1813 lan743x_csr_write(adapter, FCT_TX_CTL,
1814 FCT_TX_CTL_EN_(tx->channel_number));
1815
1816 /* reset tx channel */
1817 lan743x_csr_write(adapter, DMAC_CMD,
1818 DMAC_CMD_TX_SWR_(tx->channel_number));
1819 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
1820 DMAC_CMD_TX_SWR_(tx->channel_number),
1821 0, 1000, 20000, 100);
1822
1823 /* Write TX_BASE_ADDR */
1824 lan743x_csr_write(adapter,
1825 TX_BASE_ADDRH(tx->channel_number),
1826 DMA_ADDR_HIGH32(tx->ring_dma_ptr));
1827 lan743x_csr_write(adapter,
1828 TX_BASE_ADDRL(tx->channel_number),
1829 DMA_ADDR_LOW32(tx->ring_dma_ptr));
1830
1831 /* Write TX_CFG_B */
1832 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number));
1833 data &= ~TX_CFG_B_TX_RING_LEN_MASK_;
1834 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_);
1835 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1836 data |= TX_CFG_B_TDMABL_512_;
1837 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data);
1838
1839 /* Write TX_CFG_A */
1840 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_;
1841 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
1842 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_;
1843 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10);
1844 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04);
1845 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07);
1846 }
1847 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data);
1848
1849 /* Write TX_HEAD_WRITEBACK_ADDR */
1850 lan743x_csr_write(adapter,
1851 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number),
1852 DMA_ADDR_HIGH32(tx->head_dma_ptr));
1853 lan743x_csr_write(adapter,
1854 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number),
1855 DMA_ADDR_LOW32(tx->head_dma_ptr));
1856
1857 /* set last head */
1858 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number));
1859
1860 /* write TX_TAIL */
1861 tx->last_tail = 0;
1862 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
1863 (u32)(tx->last_tail));
1864 tx->vector_flags = lan743x_intr_get_vector_flags(adapter,
1865 INT_BIT_DMA_TX_
1866 (tx->channel_number));
1867 netif_tx_napi_add(adapter->netdev,
1868 &tx->napi, lan743x_tx_napi_poll,
1869 tx->ring_size - 1);
1870 napi_enable(&tx->napi);
1871
1872 data = 0;
1873 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
1874 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_;
1875 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
1876 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_;
1877 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
1878 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_;
1879 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
1880 data |= TX_CFG_C_TX_INT_EN_R2C_;
1881 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data);
1882
1883 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET))
1884 lan743x_csr_write(adapter, INT_EN_SET,
1885 INT_BIT_DMA_TX_(tx->channel_number));
1886 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
1887 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
1888
1889 /* start dmac channel */
1890 lan743x_csr_write(adapter, DMAC_CMD,
1891 DMAC_CMD_START_T_(tx->channel_number));
1892 return 0;
1893 }
1894
1895 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index)
1896 {
1897 return ((++index) % rx->ring_size);
1898 }
1899
1900 static int lan743x_rx_allocate_ring_element(struct lan743x_rx *rx, int index)
1901 {
1902 struct lan743x_rx_buffer_info *buffer_info;
1903 struct lan743x_rx_descriptor *descriptor;
1904 int length = 0;
1905
1906 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING);
1907 descriptor = &rx->ring_cpu_ptr[index];
1908 buffer_info = &rx->buffer_info[index];
1909 buffer_info->skb = __netdev_alloc_skb(rx->adapter->netdev,
1910 length,
1911 GFP_ATOMIC | GFP_DMA);
1912 if (!(buffer_info->skb))
1913 return -ENOMEM;
1914 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev,
1915 buffer_info->skb->data,
1916 length,
1917 DMA_FROM_DEVICE);
1918 if (dma_mapping_error(&rx->adapter->pdev->dev,
1919 buffer_info->dma_ptr)) {
1920 buffer_info->dma_ptr = 0;
1921 return -ENOMEM;
1922 }
1923
1924 buffer_info->buffer_length = length;
1925 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr);
1926 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr);
1927 descriptor->data3 = 0;
1928 descriptor->data0 = (RX_DESC_DATA0_OWN_ |
1929 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_));
1930 skb_reserve(buffer_info->skb, RX_HEAD_PADDING);
1931
1932 return 0;
1933 }
1934
1935 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index)
1936 {
1937 struct lan743x_rx_buffer_info *buffer_info;
1938 struct lan743x_rx_descriptor *descriptor;
1939
1940 descriptor = &rx->ring_cpu_ptr[index];
1941 buffer_info = &rx->buffer_info[index];
1942
1943 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr);
1944 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr);
1945 descriptor->data3 = 0;
1946 descriptor->data0 = (RX_DESC_DATA0_OWN_ |
1947 ((buffer_info->buffer_length) &
1948 RX_DESC_DATA0_BUF_LENGTH_MASK_));
1949 }
1950
1951 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index)
1952 {
1953 struct lan743x_rx_buffer_info *buffer_info;
1954 struct lan743x_rx_descriptor *descriptor;
1955
1956 descriptor = &rx->ring_cpu_ptr[index];
1957 buffer_info = &rx->buffer_info[index];
1958
1959 memset(descriptor, 0, sizeof(*descriptor));
1960
1961 if (buffer_info->dma_ptr) {
1962 dma_unmap_single(&rx->adapter->pdev->dev,
1963 buffer_info->dma_ptr,
1964 buffer_info->buffer_length,
1965 DMA_FROM_DEVICE);
1966 buffer_info->dma_ptr = 0;
1967 }
1968
1969 if (buffer_info->skb) {
1970 dev_kfree_skb(buffer_info->skb);
1971 buffer_info->skb = NULL;
1972 }
1973
1974 memset(buffer_info, 0, sizeof(*buffer_info));
1975 }
1976
1977 static int lan743x_rx_process_packet(struct lan743x_rx *rx)
1978 {
1979 struct skb_shared_hwtstamps *hwtstamps = NULL;
1980 int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
1981 struct lan743x_rx_buffer_info *buffer_info;
1982 struct lan743x_rx_descriptor *descriptor;
1983 int current_head_index = -1;
1984 int extension_index = -1;
1985 int first_index = -1;
1986 int last_index = -1;
1987
1988 current_head_index = *rx->head_cpu_ptr;
1989 if (current_head_index < 0 || current_head_index >= rx->ring_size)
1990 goto done;
1991
1992 if (rx->last_head < 0 || rx->last_head >= rx->ring_size)
1993 goto done;
1994
1995 if (rx->last_head != current_head_index) {
1996 descriptor = &rx->ring_cpu_ptr[rx->last_head];
1997 if (descriptor->data0 & RX_DESC_DATA0_OWN_)
1998 goto done;
1999
2000 if (!(descriptor->data0 & RX_DESC_DATA0_FS_))
2001 goto done;
2002
2003 first_index = rx->last_head;
2004 if (descriptor->data0 & RX_DESC_DATA0_LS_) {
2005 last_index = rx->last_head;
2006 } else {
2007 int index;
2008
2009 index = lan743x_rx_next_index(rx, first_index);
2010 while (index != current_head_index) {
2011 descriptor = &rx->ring_cpu_ptr[index];
2012 if (descriptor->data0 & RX_DESC_DATA0_OWN_)
2013 goto done;
2014
2015 if (descriptor->data0 & RX_DESC_DATA0_LS_) {
2016 last_index = index;
2017 break;
2018 }
2019 index = lan743x_rx_next_index(rx, index);
2020 }
2021 }
2022 if (last_index >= 0) {
2023 descriptor = &rx->ring_cpu_ptr[last_index];
2024 if (descriptor->data0 & RX_DESC_DATA0_EXT_) {
2025 /* extension is expected to follow */
2026 int index = lan743x_rx_next_index(rx,
2027 last_index);
2028 if (index != current_head_index) {
2029 descriptor = &rx->ring_cpu_ptr[index];
2030 if (descriptor->data0 &
2031 RX_DESC_DATA0_OWN_) {
2032 goto done;
2033 }
2034 if (descriptor->data0 &
2035 RX_DESC_DATA0_EXT_) {
2036 extension_index = index;
2037 } else {
2038 goto done;
2039 }
2040 } else {
2041 /* extension is not yet available */
2042 /* prevent processing of this packet */
2043 first_index = -1;
2044 last_index = -1;
2045 }
2046 }
2047 }
2048 }
2049 if (first_index >= 0 && last_index >= 0) {
2050 int real_last_index = last_index;
2051 struct sk_buff *skb = NULL;
2052 u32 ts_sec = 0;
2053 u32 ts_nsec = 0;
2054
2055 /* packet is available */
2056 if (first_index == last_index) {
2057 /* single buffer packet */
2058 int packet_length;
2059
2060 buffer_info = &rx->buffer_info[first_index];
2061 skb = buffer_info->skb;
2062 descriptor = &rx->ring_cpu_ptr[first_index];
2063
2064 /* unmap from dma */
2065 if (buffer_info->dma_ptr) {
2066 dma_unmap_single(&rx->adapter->pdev->dev,
2067 buffer_info->dma_ptr,
2068 buffer_info->buffer_length,
2069 DMA_FROM_DEVICE);
2070 buffer_info->dma_ptr = 0;
2071 buffer_info->buffer_length = 0;
2072 }
2073 buffer_info->skb = NULL;
2074 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_
2075 (descriptor->data0);
2076 skb_put(skb, packet_length - 4);
2077 skb->protocol = eth_type_trans(skb,
2078 rx->adapter->netdev);
2079 lan743x_rx_allocate_ring_element(rx, first_index);
2080 } else {
2081 int index = first_index;
2082
2083 /* multi buffer packet not supported */
2084 /* this should not happen since
2085 * buffers are allocated to be at least jumbo size
2086 */
2087
2088 /* clean up buffers */
2089 if (first_index <= last_index) {
2090 while ((index >= first_index) &&
2091 (index <= last_index)) {
2092 lan743x_rx_release_ring_element(rx,
2093 index);
2094 lan743x_rx_allocate_ring_element(rx,
2095 index);
2096 index = lan743x_rx_next_index(rx,
2097 index);
2098 }
2099 } else {
2100 while ((index >= first_index) ||
2101 (index <= last_index)) {
2102 lan743x_rx_release_ring_element(rx,
2103 index);
2104 lan743x_rx_allocate_ring_element(rx,
2105 index);
2106 index = lan743x_rx_next_index(rx,
2107 index);
2108 }
2109 }
2110 }
2111
2112 if (extension_index >= 0) {
2113 descriptor = &rx->ring_cpu_ptr[extension_index];
2114 buffer_info = &rx->buffer_info[extension_index];
2115
2116 ts_sec = descriptor->data1;
2117 ts_nsec = (descriptor->data2 &
2118 RX_DESC_DATA2_TS_NS_MASK_);
2119 lan743x_rx_reuse_ring_element(rx, extension_index);
2120 real_last_index = extension_index;
2121 }
2122
2123 if (!skb) {
2124 result = RX_PROCESS_RESULT_PACKET_DROPPED;
2125 goto move_forward;
2126 }
2127
2128 if (extension_index < 0)
2129 goto pass_packet_to_os;
2130 hwtstamps = skb_hwtstamps(skb);
2131 if (hwtstamps)
2132 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec);
2133
2134 pass_packet_to_os:
2135 /* pass packet to OS */
2136 napi_gro_receive(&rx->napi, skb);
2137 result = RX_PROCESS_RESULT_PACKET_RECEIVED;
2138
2139 move_forward:
2140 /* push tail and head forward */
2141 rx->last_tail = real_last_index;
2142 rx->last_head = lan743x_rx_next_index(rx, real_last_index);
2143 }
2144 done:
2145 return result;
2146 }
2147
2148 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight)
2149 {
2150 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi);
2151 struct lan743x_adapter *adapter = rx->adapter;
2152 u32 rx_tail_flags = 0;
2153 int count;
2154
2155 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) {
2156 /* clear int status bit before reading packet */
2157 lan743x_csr_write(adapter, DMAC_INT_STS,
2158 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2159 }
2160 count = 0;
2161 while (count < weight) {
2162 int rx_process_result = -1;
2163
2164 rx_process_result = lan743x_rx_process_packet(rx);
2165 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) {
2166 count++;
2167 } else if (rx_process_result ==
2168 RX_PROCESS_RESULT_NOTHING_TO_DO) {
2169 break;
2170 } else if (rx_process_result ==
2171 RX_PROCESS_RESULT_PACKET_DROPPED) {
2172 continue;
2173 }
2174 }
2175 rx->frame_count += count;
2176 if (count == weight)
2177 goto done;
2178
2179 if (!napi_complete_done(napi, count))
2180 goto done;
2181
2182 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
2183 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_;
2184 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) {
2185 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_;
2186 } else {
2187 lan743x_csr_write(adapter, INT_EN_SET,
2188 INT_BIT_DMA_RX_(rx->channel_number));
2189 }
2190
2191 /* update RX_TAIL */
2192 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2193 rx_tail_flags | rx->last_tail);
2194 done:
2195 return count;
2196 }
2197
2198 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx)
2199 {
2200 if (rx->buffer_info && rx->ring_cpu_ptr) {
2201 int index;
2202
2203 for (index = 0; index < rx->ring_size; index++)
2204 lan743x_rx_release_ring_element(rx, index);
2205 }
2206
2207 if (rx->head_cpu_ptr) {
2208 pci_free_consistent(rx->adapter->pdev,
2209 sizeof(*rx->head_cpu_ptr),
2210 rx->head_cpu_ptr,
2211 rx->head_dma_ptr);
2212 rx->head_cpu_ptr = NULL;
2213 rx->head_dma_ptr = 0;
2214 }
2215
2216 kfree(rx->buffer_info);
2217 rx->buffer_info = NULL;
2218
2219 if (rx->ring_cpu_ptr) {
2220 pci_free_consistent(rx->adapter->pdev,
2221 rx->ring_allocation_size,
2222 rx->ring_cpu_ptr,
2223 rx->ring_dma_ptr);
2224 rx->ring_allocation_size = 0;
2225 rx->ring_cpu_ptr = NULL;
2226 rx->ring_dma_ptr = 0;
2227 }
2228
2229 rx->ring_size = 0;
2230 rx->last_head = 0;
2231 }
2232
2233 static int lan743x_rx_ring_init(struct lan743x_rx *rx)
2234 {
2235 size_t ring_allocation_size = 0;
2236 dma_addr_t dma_ptr = 0;
2237 void *cpu_ptr = NULL;
2238 int ret = -ENOMEM;
2239 int index = 0;
2240
2241 rx->ring_size = LAN743X_RX_RING_SIZE;
2242 if (rx->ring_size <= 1) {
2243 ret = -EINVAL;
2244 goto cleanup;
2245 }
2246 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) {
2247 ret = -EINVAL;
2248 goto cleanup;
2249 }
2250 ring_allocation_size = ALIGN(rx->ring_size *
2251 sizeof(struct lan743x_rx_descriptor),
2252 PAGE_SIZE);
2253 dma_ptr = 0;
2254 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev,
2255 ring_allocation_size, &dma_ptr);
2256 if (!cpu_ptr) {
2257 ret = -ENOMEM;
2258 goto cleanup;
2259 }
2260 rx->ring_allocation_size = ring_allocation_size;
2261 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr;
2262 rx->ring_dma_ptr = dma_ptr;
2263
2264 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info),
2265 GFP_KERNEL);
2266 if (!cpu_ptr) {
2267 ret = -ENOMEM;
2268 goto cleanup;
2269 }
2270 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr;
2271 dma_ptr = 0;
2272 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev,
2273 sizeof(*rx->head_cpu_ptr), &dma_ptr);
2274 if (!cpu_ptr) {
2275 ret = -ENOMEM;
2276 goto cleanup;
2277 }
2278
2279 rx->head_cpu_ptr = cpu_ptr;
2280 rx->head_dma_ptr = dma_ptr;
2281 if (rx->head_dma_ptr & 0x3) {
2282 ret = -ENOMEM;
2283 goto cleanup;
2284 }
2285
2286 rx->last_head = 0;
2287 for (index = 0; index < rx->ring_size; index++) {
2288 ret = lan743x_rx_allocate_ring_element(rx, index);
2289 if (ret)
2290 goto cleanup;
2291 }
2292 return 0;
2293
2294 cleanup:
2295 lan743x_rx_ring_cleanup(rx);
2296 return ret;
2297 }
2298
2299 static void lan743x_rx_close(struct lan743x_rx *rx)
2300 {
2301 struct lan743x_adapter *adapter = rx->adapter;
2302
2303 lan743x_csr_write(adapter, FCT_RX_CTL,
2304 FCT_RX_CTL_DIS_(rx->channel_number));
2305 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2306 FCT_RX_CTL_EN_(rx->channel_number),
2307 0, 1000, 20000, 100);
2308
2309 lan743x_csr_write(adapter, DMAC_CMD,
2310 DMAC_CMD_STOP_R_(rx->channel_number));
2311 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number);
2312
2313 lan743x_csr_write(adapter, DMAC_INT_EN_CLR,
2314 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2315 lan743x_csr_write(adapter, INT_EN_CLR,
2316 INT_BIT_DMA_RX_(rx->channel_number));
2317 napi_disable(&rx->napi);
2318
2319 netif_napi_del(&rx->napi);
2320
2321 lan743x_rx_ring_cleanup(rx);
2322 }
2323
2324 static int lan743x_rx_open(struct lan743x_rx *rx)
2325 {
2326 struct lan743x_adapter *adapter = rx->adapter;
2327 u32 data = 0;
2328 int ret;
2329
2330 rx->frame_count = 0;
2331 ret = lan743x_rx_ring_init(rx);
2332 if (ret)
2333 goto return_error;
2334
2335 netif_napi_add(adapter->netdev,
2336 &rx->napi, lan743x_rx_napi_poll,
2337 rx->ring_size - 1);
2338
2339 lan743x_csr_write(adapter, DMAC_CMD,
2340 DMAC_CMD_RX_SWR_(rx->channel_number));
2341 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
2342 DMAC_CMD_RX_SWR_(rx->channel_number),
2343 0, 1000, 20000, 100);
2344
2345 /* set ring base address */
2346 lan743x_csr_write(adapter,
2347 RX_BASE_ADDRH(rx->channel_number),
2348 DMA_ADDR_HIGH32(rx->ring_dma_ptr));
2349 lan743x_csr_write(adapter,
2350 RX_BASE_ADDRL(rx->channel_number),
2351 DMA_ADDR_LOW32(rx->ring_dma_ptr));
2352
2353 /* set rx write back address */
2354 lan743x_csr_write(adapter,
2355 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number),
2356 DMA_ADDR_HIGH32(rx->head_dma_ptr));
2357 lan743x_csr_write(adapter,
2358 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number),
2359 DMA_ADDR_LOW32(rx->head_dma_ptr));
2360 data = RX_CFG_A_RX_HP_WB_EN_;
2361 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
2362 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ |
2363 RX_CFG_A_RX_WB_THRES_SET_(0x7) |
2364 RX_CFG_A_RX_PF_THRES_SET_(16) |
2365 RX_CFG_A_RX_PF_PRI_THRES_SET_(4));
2366 }
2367
2368 /* set RX_CFG_A */
2369 lan743x_csr_write(adapter,
2370 RX_CFG_A(rx->channel_number), data);
2371
2372 /* set RX_CFG_B */
2373 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number));
2374 data &= ~RX_CFG_B_RX_PAD_MASK_;
2375 if (!RX_HEAD_PADDING)
2376 data |= RX_CFG_B_RX_PAD_0_;
2377 else
2378 data |= RX_CFG_B_RX_PAD_2_;
2379 data &= ~RX_CFG_B_RX_RING_LEN_MASK_;
2380 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_);
2381 data |= RX_CFG_B_TS_ALL_RX_;
2382 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
2383 data |= RX_CFG_B_RDMABL_512_;
2384
2385 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data);
2386 rx->vector_flags = lan743x_intr_get_vector_flags(adapter,
2387 INT_BIT_DMA_RX_
2388 (rx->channel_number));
2389
2390 /* set RX_CFG_C */
2391 data = 0;
2392 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
2393 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_;
2394 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
2395 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_;
2396 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
2397 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_;
2398 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
2399 data |= RX_CFG_C_RX_INT_EN_R2C_;
2400 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data);
2401
2402 rx->last_tail = ((u32)(rx->ring_size - 1));
2403 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2404 rx->last_tail);
2405 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number));
2406 if (rx->last_head) {
2407 ret = -EIO;
2408 goto napi_delete;
2409 }
2410
2411 napi_enable(&rx->napi);
2412
2413 lan743x_csr_write(adapter, INT_EN_SET,
2414 INT_BIT_DMA_RX_(rx->channel_number));
2415 lan743x_csr_write(adapter, DMAC_INT_STS,
2416 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2417 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
2418 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2419 lan743x_csr_write(adapter, DMAC_CMD,
2420 DMAC_CMD_START_R_(rx->channel_number));
2421
2422 /* initialize fifo */
2423 lan743x_csr_write(adapter, FCT_RX_CTL,
2424 FCT_RX_CTL_RESET_(rx->channel_number));
2425 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2426 FCT_RX_CTL_RESET_(rx->channel_number),
2427 0, 1000, 20000, 100);
2428 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number),
2429 FCT_FLOW_CTL_REQ_EN_ |
2430 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) |
2431 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA));
2432
2433 /* enable fifo */
2434 lan743x_csr_write(adapter, FCT_RX_CTL,
2435 FCT_RX_CTL_EN_(rx->channel_number));
2436 return 0;
2437
2438 napi_delete:
2439 netif_napi_del(&rx->napi);
2440 lan743x_rx_ring_cleanup(rx);
2441
2442 return_error:
2443 return ret;
2444 }
2445
2446 static int lan743x_netdev_close(struct net_device *netdev)
2447 {
2448 struct lan743x_adapter *adapter = netdev_priv(netdev);
2449 int index;
2450
2451 lan743x_tx_close(&adapter->tx[0]);
2452
2453 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++)
2454 lan743x_rx_close(&adapter->rx[index]);
2455
2456 lan743x_ptp_close(adapter);
2457
2458 lan743x_phy_close(adapter);
2459
2460 lan743x_mac_close(adapter);
2461
2462 lan743x_intr_close(adapter);
2463
2464 return 0;
2465 }
2466
2467 static int lan743x_netdev_open(struct net_device *netdev)
2468 {
2469 struct lan743x_adapter *adapter = netdev_priv(netdev);
2470 int index;
2471 int ret;
2472
2473 ret = lan743x_intr_open(adapter);
2474 if (ret)
2475 goto return_error;
2476
2477 ret = lan743x_mac_open(adapter);
2478 if (ret)
2479 goto close_intr;
2480
2481 ret = lan743x_phy_open(adapter);
2482 if (ret)
2483 goto close_mac;
2484
2485 ret = lan743x_ptp_open(adapter);
2486 if (ret)
2487 goto close_phy;
2488
2489 lan743x_rfe_open(adapter);
2490
2491 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2492 ret = lan743x_rx_open(&adapter->rx[index]);
2493 if (ret)
2494 goto close_rx;
2495 }
2496
2497 ret = lan743x_tx_open(&adapter->tx[0]);
2498 if (ret)
2499 goto close_rx;
2500
2501 return 0;
2502
2503 close_rx:
2504 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2505 if (adapter->rx[index].ring_cpu_ptr)
2506 lan743x_rx_close(&adapter->rx[index]);
2507 }
2508 lan743x_ptp_close(adapter);
2509
2510 close_phy:
2511 lan743x_phy_close(adapter);
2512
2513 close_mac:
2514 lan743x_mac_close(adapter);
2515
2516 close_intr:
2517 lan743x_intr_close(adapter);
2518
2519 return_error:
2520 netif_warn(adapter, ifup, adapter->netdev,
2521 "Error opening LAN743x\n");
2522 return ret;
2523 }
2524
2525 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb,
2526 struct net_device *netdev)
2527 {
2528 struct lan743x_adapter *adapter = netdev_priv(netdev);
2529
2530 return lan743x_tx_xmit_frame(&adapter->tx[0], skb);
2531 }
2532
2533 static int lan743x_netdev_ioctl(struct net_device *netdev,
2534 struct ifreq *ifr, int cmd)
2535 {
2536 if (!netif_running(netdev))
2537 return -EINVAL;
2538 if (cmd == SIOCSHWTSTAMP)
2539 return lan743x_ptp_ioctl(netdev, ifr, cmd);
2540 return phy_mii_ioctl(netdev->phydev, ifr, cmd);
2541 }
2542
2543 static void lan743x_netdev_set_multicast(struct net_device *netdev)
2544 {
2545 struct lan743x_adapter *adapter = netdev_priv(netdev);
2546
2547 lan743x_rfe_set_multicast(adapter);
2548 }
2549
2550 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu)
2551 {
2552 struct lan743x_adapter *adapter = netdev_priv(netdev);
2553 int ret = 0;
2554
2555 ret = lan743x_mac_set_mtu(adapter, new_mtu);
2556 if (!ret)
2557 netdev->mtu = new_mtu;
2558 return ret;
2559 }
2560
2561 static void lan743x_netdev_get_stats64(struct net_device *netdev,
2562 struct rtnl_link_stats64 *stats)
2563 {
2564 struct lan743x_adapter *adapter = netdev_priv(netdev);
2565
2566 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES);
2567 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES);
2568 stats->rx_bytes = lan743x_csr_read(adapter,
2569 STAT_RX_UNICAST_BYTE_COUNT) +
2570 lan743x_csr_read(adapter,
2571 STAT_RX_BROADCAST_BYTE_COUNT) +
2572 lan743x_csr_read(adapter,
2573 STAT_RX_MULTICAST_BYTE_COUNT);
2574 stats->tx_bytes = lan743x_csr_read(adapter,
2575 STAT_TX_UNICAST_BYTE_COUNT) +
2576 lan743x_csr_read(adapter,
2577 STAT_TX_BROADCAST_BYTE_COUNT) +
2578 lan743x_csr_read(adapter,
2579 STAT_TX_MULTICAST_BYTE_COUNT);
2580 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) +
2581 lan743x_csr_read(adapter,
2582 STAT_RX_ALIGNMENT_ERRORS) +
2583 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) +
2584 lan743x_csr_read(adapter,
2585 STAT_RX_UNDERSIZE_FRAME_ERRORS) +
2586 lan743x_csr_read(adapter,
2587 STAT_RX_OVERSIZE_FRAME_ERRORS);
2588 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) +
2589 lan743x_csr_read(adapter,
2590 STAT_TX_EXCESS_DEFERRAL_ERRORS) +
2591 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS);
2592 stats->rx_dropped = lan743x_csr_read(adapter,
2593 STAT_RX_DROPPED_FRAMES);
2594 stats->tx_dropped = lan743x_csr_read(adapter,
2595 STAT_TX_EXCESSIVE_COLLISION);
2596 stats->multicast = lan743x_csr_read(adapter,
2597 STAT_RX_MULTICAST_FRAMES) +
2598 lan743x_csr_read(adapter,
2599 STAT_TX_MULTICAST_FRAMES);
2600 stats->collisions = lan743x_csr_read(adapter,
2601 STAT_TX_SINGLE_COLLISIONS) +
2602 lan743x_csr_read(adapter,
2603 STAT_TX_MULTIPLE_COLLISIONS) +
2604 lan743x_csr_read(adapter,
2605 STAT_TX_LATE_COLLISIONS);
2606 }
2607
2608 static int lan743x_netdev_set_mac_address(struct net_device *netdev,
2609 void *addr)
2610 {
2611 struct lan743x_adapter *adapter = netdev_priv(netdev);
2612 struct sockaddr *sock_addr = addr;
2613 int ret;
2614
2615 ret = eth_prepare_mac_addr_change(netdev, sock_addr);
2616 if (ret)
2617 return ret;
2618 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data);
2619 lan743x_mac_set_address(adapter, sock_addr->sa_data);
2620 lan743x_rfe_update_mac_address(adapter);
2621 return 0;
2622 }
2623
2624 static const struct net_device_ops lan743x_netdev_ops = {
2625 .ndo_open = lan743x_netdev_open,
2626 .ndo_stop = lan743x_netdev_close,
2627 .ndo_start_xmit = lan743x_netdev_xmit_frame,
2628 .ndo_do_ioctl = lan743x_netdev_ioctl,
2629 .ndo_set_rx_mode = lan743x_netdev_set_multicast,
2630 .ndo_change_mtu = lan743x_netdev_change_mtu,
2631 .ndo_get_stats64 = lan743x_netdev_get_stats64,
2632 .ndo_set_mac_address = lan743x_netdev_set_mac_address,
2633 };
2634
2635 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter)
2636 {
2637 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
2638 }
2639
2640 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter)
2641 {
2642 mdiobus_unregister(adapter->mdiobus);
2643 }
2644
2645 static void lan743x_full_cleanup(struct lan743x_adapter *adapter)
2646 {
2647 unregister_netdev(adapter->netdev);
2648
2649 lan743x_mdiobus_cleanup(adapter);
2650 lan743x_hardware_cleanup(adapter);
2651 lan743x_pci_cleanup(adapter);
2652 }
2653
2654 static int lan743x_hardware_init(struct lan743x_adapter *adapter,
2655 struct pci_dev *pdev)
2656 {
2657 struct lan743x_tx *tx;
2658 int index;
2659 int ret;
2660
2661 adapter->intr.irq = adapter->pdev->irq;
2662 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
2663 mutex_init(&adapter->dp_lock);
2664
2665 ret = lan743x_gpio_init(adapter);
2666 if (ret)
2667 return ret;
2668
2669 ret = lan743x_mac_init(adapter);
2670 if (ret)
2671 return ret;
2672
2673 ret = lan743x_phy_init(adapter);
2674 if (ret)
2675 return ret;
2676
2677 ret = lan743x_ptp_init(adapter);
2678 if (ret)
2679 return ret;
2680
2681 lan743x_rfe_update_mac_address(adapter);
2682
2683 ret = lan743x_dmac_init(adapter);
2684 if (ret)
2685 return ret;
2686
2687 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2688 adapter->rx[index].adapter = adapter;
2689 adapter->rx[index].channel_number = index;
2690 }
2691
2692 tx = &adapter->tx[0];
2693 tx->adapter = adapter;
2694 tx->channel_number = 0;
2695 spin_lock_init(&tx->ring_lock);
2696 return 0;
2697 }
2698
2699 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
2700 {
2701 int ret;
2702
2703 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev);
2704 if (!(adapter->mdiobus)) {
2705 ret = -ENOMEM;
2706 goto return_error;
2707 }
2708
2709 adapter->mdiobus->priv = (void *)adapter;
2710 adapter->mdiobus->read = lan743x_mdiobus_read;
2711 adapter->mdiobus->write = lan743x_mdiobus_write;
2712 adapter->mdiobus->name = "lan743x-mdiobus";
2713 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE,
2714 "pci-%s", pci_name(adapter->pdev));
2715
2716 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_)
2717 /* LAN7430 uses internal phy at address 1 */
2718 adapter->mdiobus->phy_mask = ~(u32)BIT(1);
2719
2720 /* register mdiobus */
2721 ret = mdiobus_register(adapter->mdiobus);
2722 if (ret < 0)
2723 goto return_error;
2724 return 0;
2725
2726 return_error:
2727 return ret;
2728 }
2729
2730 /* lan743x_pcidev_probe - Device Initialization Routine
2731 * @pdev: PCI device information struct
2732 * @id: entry in lan743x_pci_tbl
2733 *
2734 * Returns 0 on success, negative on failure
2735 *
2736 * initializes an adapter identified by a pci_dev structure.
2737 * The OS initialization, configuring of the adapter private structure,
2738 * and a hardware reset occur.
2739 **/
2740 static int lan743x_pcidev_probe(struct pci_dev *pdev,
2741 const struct pci_device_id *id)
2742 {
2743 struct lan743x_adapter *adapter = NULL;
2744 struct net_device *netdev = NULL;
2745 int ret = -ENODEV;
2746
2747 netdev = devm_alloc_etherdev(&pdev->dev,
2748 sizeof(struct lan743x_adapter));
2749 if (!netdev)
2750 goto return_error;
2751
2752 SET_NETDEV_DEV(netdev, &pdev->dev);
2753 pci_set_drvdata(pdev, netdev);
2754 adapter = netdev_priv(netdev);
2755 adapter->netdev = netdev;
2756 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE |
2757 NETIF_MSG_LINK | NETIF_MSG_IFUP |
2758 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED;
2759 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
2760
2761 ret = lan743x_pci_init(adapter, pdev);
2762 if (ret)
2763 goto return_error;
2764
2765 ret = lan743x_csr_init(adapter);
2766 if (ret)
2767 goto cleanup_pci;
2768
2769 ret = lan743x_hardware_init(adapter, pdev);
2770 if (ret)
2771 goto cleanup_pci;
2772
2773 ret = lan743x_mdiobus_init(adapter);
2774 if (ret)
2775 goto cleanup_hardware;
2776
2777 adapter->netdev->netdev_ops = &lan743x_netdev_ops;
2778 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops;
2779 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2780 adapter->netdev->hw_features = adapter->netdev->features;
2781
2782 /* carrier off reporting is important to ethtool even BEFORE open */
2783 netif_carrier_off(netdev);
2784
2785 ret = register_netdev(adapter->netdev);
2786 if (ret < 0)
2787 goto cleanup_mdiobus;
2788 return 0;
2789
2790 cleanup_mdiobus:
2791 lan743x_mdiobus_cleanup(adapter);
2792
2793 cleanup_hardware:
2794 lan743x_hardware_cleanup(adapter);
2795
2796 cleanup_pci:
2797 lan743x_pci_cleanup(adapter);
2798
2799 return_error:
2800 pr_warn("Initialization failed\n");
2801 return ret;
2802 }
2803
2804 /**
2805 * lan743x_pcidev_remove - Device Removal Routine
2806 * @pdev: PCI device information struct
2807 *
2808 * this is called by the PCI subsystem to alert the driver
2809 * that it should release a PCI device. This could be caused by a
2810 * Hot-Plug event, or because the driver is going to be removed from
2811 * memory.
2812 **/
2813 static void lan743x_pcidev_remove(struct pci_dev *pdev)
2814 {
2815 struct net_device *netdev = pci_get_drvdata(pdev);
2816 struct lan743x_adapter *adapter = netdev_priv(netdev);
2817
2818 lan743x_full_cleanup(adapter);
2819 }
2820
2821 static void lan743x_pcidev_shutdown(struct pci_dev *pdev)
2822 {
2823 struct net_device *netdev = pci_get_drvdata(pdev);
2824 struct lan743x_adapter *adapter = netdev_priv(netdev);
2825
2826 rtnl_lock();
2827 netif_device_detach(netdev);
2828
2829 /* close netdev when netdev is at running state.
2830 * For instance, it is true when system goes to sleep by pm-suspend
2831 * However, it is false when system goes to sleep by suspend GUI menu
2832 */
2833 if (netif_running(netdev))
2834 lan743x_netdev_close(netdev);
2835 rtnl_unlock();
2836
2837 #ifdef CONFIG_PM
2838 pci_save_state(pdev);
2839 #endif
2840
2841 /* clean up lan743x portion */
2842 lan743x_hardware_cleanup(adapter);
2843 }
2844
2845 #ifdef CONFIG_PM_SLEEP
2846 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len)
2847 {
2848 return bitrev16(crc16(0xFFFF, buf, len));
2849 }
2850
2851 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter)
2852 {
2853 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
2854 const u8 ipv6_multicast[3] = { 0x33, 0x33 };
2855 const u8 arp_type[2] = { 0x08, 0x06 };
2856 int mask_index;
2857 u32 pmtctl;
2858 u32 wucsr;
2859 u32 macrx;
2860 u16 crc;
2861
2862 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++)
2863 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0);
2864
2865 /* clear wake settings */
2866 pmtctl = lan743x_csr_read(adapter, PMT_CTL);
2867 pmtctl |= PMT_CTL_WUPS_MASK_;
2868 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ |
2869 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ |
2870 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_);
2871
2872 macrx = lan743x_csr_read(adapter, MAC_RX);
2873
2874 wucsr = 0;
2875 mask_index = 0;
2876
2877 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_;
2878
2879 if (adapter->wolopts & WAKE_PHY) {
2880 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_;
2881 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_;
2882 }
2883 if (adapter->wolopts & WAKE_MAGIC) {
2884 wucsr |= MAC_WUCSR_MPEN_;
2885 macrx |= MAC_RX_RXEN_;
2886 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2887 }
2888 if (adapter->wolopts & WAKE_UCAST) {
2889 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_;
2890 macrx |= MAC_RX_RXEN_;
2891 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2892 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2893 }
2894 if (adapter->wolopts & WAKE_BCAST) {
2895 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_;
2896 macrx |= MAC_RX_RXEN_;
2897 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2898 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2899 }
2900 if (adapter->wolopts & WAKE_MCAST) {
2901 /* IPv4 multicast */
2902 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3);
2903 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
2904 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
2905 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
2906 (crc & MAC_WUF_CFG_CRC16_MASK_));
2907 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7);
2908 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
2909 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
2910 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
2911 mask_index++;
2912
2913 /* IPv6 multicast */
2914 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2);
2915 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
2916 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
2917 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
2918 (crc & MAC_WUF_CFG_CRC16_MASK_));
2919 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3);
2920 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
2921 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
2922 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
2923 mask_index++;
2924
2925 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
2926 macrx |= MAC_RX_RXEN_;
2927 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2928 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2929 }
2930 if (adapter->wolopts & WAKE_ARP) {
2931 /* set MAC_WUF_CFG & WUF_MASK
2932 * for packettype (offset 12,13) = ARP (0x0806)
2933 */
2934 crc = lan743x_pm_wakeframe_crc16(arp_type, 2);
2935 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
2936 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ |
2937 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
2938 (crc & MAC_WUF_CFG_CRC16_MASK_));
2939 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000);
2940 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
2941 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
2942 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
2943 mask_index++;
2944
2945 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
2946 macrx |= MAC_RX_RXEN_;
2947 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2948 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2949 }
2950
2951 lan743x_csr_write(adapter, MAC_WUCSR, wucsr);
2952 lan743x_csr_write(adapter, PMT_CTL, pmtctl);
2953 lan743x_csr_write(adapter, MAC_RX, macrx);
2954 }
2955
2956 static int lan743x_pm_suspend(struct device *dev)
2957 {
2958 struct pci_dev *pdev = to_pci_dev(dev);
2959 struct net_device *netdev = pci_get_drvdata(pdev);
2960 struct lan743x_adapter *adapter = netdev_priv(netdev);
2961 int ret;
2962
2963 lan743x_pcidev_shutdown(pdev);
2964
2965 /* clear all wakes */
2966 lan743x_csr_write(adapter, MAC_WUCSR, 0);
2967 lan743x_csr_write(adapter, MAC_WUCSR2, 0);
2968 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF);
2969
2970 if (adapter->wolopts)
2971 lan743x_pm_set_wol(adapter);
2972
2973 /* Host sets PME_En, put D3hot */
2974 ret = pci_prepare_to_sleep(pdev);
2975
2976 return 0;
2977 }
2978
2979 static int lan743x_pm_resume(struct device *dev)
2980 {
2981 struct pci_dev *pdev = to_pci_dev(dev);
2982 struct net_device *netdev = pci_get_drvdata(pdev);
2983 struct lan743x_adapter *adapter = netdev_priv(netdev);
2984 int ret;
2985
2986 pci_set_power_state(pdev, PCI_D0);
2987 pci_restore_state(pdev);
2988 pci_save_state(pdev);
2989
2990 ret = lan743x_hardware_init(adapter, pdev);
2991 if (ret) {
2992 netif_err(adapter, probe, adapter->netdev,
2993 "lan743x_hardware_init returned %d\n", ret);
2994 }
2995
2996 /* open netdev when netdev is at running state while resume.
2997 * For instance, it is true when system wakesup after pm-suspend
2998 * However, it is false when system wakes up after suspend GUI menu
2999 */
3000 if (netif_running(netdev))
3001 lan743x_netdev_open(netdev);
3002
3003 netif_device_attach(netdev);
3004
3005 return 0;
3006 }
3007
3008 static const struct dev_pm_ops lan743x_pm_ops = {
3009 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume)
3010 };
3011 #endif /* CONFIG_PM_SLEEP */
3012
3013 static const struct pci_device_id lan743x_pcidev_tbl[] = {
3014 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) },
3015 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) },
3016 { 0, }
3017 };
3018
3019 static struct pci_driver lan743x_pcidev_driver = {
3020 .name = DRIVER_NAME,
3021 .id_table = lan743x_pcidev_tbl,
3022 .probe = lan743x_pcidev_probe,
3023 .remove = lan743x_pcidev_remove,
3024 #ifdef CONFIG_PM_SLEEP
3025 .driver.pm = &lan743x_pm_ops,
3026 #endif
3027 .shutdown = lan743x_pcidev_shutdown,
3028 };
3029
3030 module_pci_driver(lan743x_pcidev_driver);
3031
3032 MODULE_AUTHOR(DRIVER_AUTHOR);
3033 MODULE_DESCRIPTION(DRIVER_DESC);
3034 MODULE_LICENSE("GPL");
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