1
2
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 "lan743x_main.h"
15
16static void lan743x_pci_cleanup(struct lan743x_adapter *adapter)
17{
18 pci_release_selected_regions(adapter->pdev,
19 pci_select_bars(adapter->pdev,
20 IORESOURCE_MEM));
21 pci_disable_device(adapter->pdev);
22}
23
24static int lan743x_pci_init(struct lan743x_adapter *adapter,
25 struct pci_dev *pdev)
26{
27 unsigned long bars = 0;
28 int ret;
29
30 adapter->pdev = pdev;
31 ret = pci_enable_device_mem(pdev);
32 if (ret)
33 goto return_error;
34
35 netif_info(adapter, probe, adapter->netdev,
36 "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n",
37 pdev->vendor, pdev->device);
38 bars = pci_select_bars(pdev, IORESOURCE_MEM);
39 if (!test_bit(0, &bars))
40 goto disable_device;
41
42 ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME);
43 if (ret)
44 goto disable_device;
45
46 pci_set_master(pdev);
47 return 0;
48
49disable_device:
50 pci_disable_device(adapter->pdev);
51
52return_error:
53 return ret;
54}
55
56static u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset)
57{
58 return ioread32(&adapter->csr.csr_address[offset]);
59}
60
61static void lan743x_csr_write(struct lan743x_adapter *adapter, int offset,
62 u32 data)
63{
64 iowrite32(data, &adapter->csr.csr_address[offset]);
65}
66
67#define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset)
68
69static int lan743x_csr_light_reset(struct lan743x_adapter *adapter)
70{
71 u32 data;
72
73 data = lan743x_csr_read(adapter, HW_CFG);
74 data |= HW_CFG_LRST_;
75 lan743x_csr_write(adapter, HW_CFG, data);
76
77 return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data,
78 !(data & HW_CFG_LRST_), 100000, 10000000);
79}
80
81static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter,
82 int offset, u32 bit_mask,
83 int target_value, int usleep_min,
84 int usleep_max, int count)
85{
86 u32 data;
87
88 return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data,
89 target_value == ((data & bit_mask) ? 1 : 0),
90 usleep_max, usleep_min * count);
91}
92
93static int lan743x_csr_init(struct lan743x_adapter *adapter)
94{
95 struct lan743x_csr *csr = &adapter->csr;
96 resource_size_t bar_start, bar_length;
97 int result;
98
99 bar_start = pci_resource_start(adapter->pdev, 0);
100 bar_length = pci_resource_len(adapter->pdev, 0);
101 csr->csr_address = devm_ioremap(&adapter->pdev->dev,
102 bar_start, bar_length);
103 if (!csr->csr_address) {
104 result = -ENOMEM;
105 goto clean_up;
106 }
107
108 csr->id_rev = lan743x_csr_read(adapter, ID_REV);
109 csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
110 netif_info(adapter, probe, adapter->netdev,
111 "ID_REV = 0x%08X, FPGA_REV = %d.%d\n",
112 csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev),
113 FPGA_REV_GET_MINOR_(csr->fpga_rev));
114 if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) {
115 result = -ENODEV;
116 goto clean_up;
117 }
118
119 csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
120 switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) {
121 case ID_REV_CHIP_REV_A0_:
122 csr->flags |= LAN743X_CSR_FLAG_IS_A0;
123 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
124 break;
125 case ID_REV_CHIP_REV_B0_:
126 csr->flags |= LAN743X_CSR_FLAG_IS_B0;
127 break;
128 }
129
130 result = lan743x_csr_light_reset(adapter);
131 if (result)
132 goto clean_up;
133 return 0;
134clean_up:
135 return result;
136}
137
138static void lan743x_intr_software_isr(void *context)
139{
140 struct lan743x_adapter *adapter = context;
141 struct lan743x_intr *intr = &adapter->intr;
142 u32 int_sts;
143
144 int_sts = lan743x_csr_read(adapter, INT_STS);
145 if (int_sts & INT_BIT_SW_GP_) {
146 lan743x_csr_write(adapter, INT_STS, INT_BIT_SW_GP_);
147 intr->software_isr_flag = 1;
148 }
149}
150
151static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags)
152{
153 struct lan743x_tx *tx = context;
154 struct lan743x_adapter *adapter = tx->adapter;
155 bool enable_flag = true;
156 u32 int_en = 0;
157
158 int_en = lan743x_csr_read(adapter, INT_EN_SET);
159 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
160 lan743x_csr_write(adapter, INT_EN_CLR,
161 INT_BIT_DMA_TX_(tx->channel_number));
162 }
163
164 if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) {
165 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
166 u32 dmac_int_sts;
167 u32 dmac_int_en;
168
169 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
170 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
171 else
172 dmac_int_sts = ioc_bit;
173 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
174 dmac_int_en = lan743x_csr_read(adapter,
175 DMAC_INT_EN_SET);
176 else
177 dmac_int_en = ioc_bit;
178
179 dmac_int_en &= ioc_bit;
180 dmac_int_sts &= dmac_int_en;
181 if (dmac_int_sts & ioc_bit) {
182 napi_schedule(&tx->napi);
183 enable_flag = false;
184 }
185 }
186
187 if (enable_flag)
188
189 lan743x_csr_write(adapter, INT_EN_SET,
190 INT_BIT_DMA_TX_(tx->channel_number));
191}
192
193static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags)
194{
195 struct lan743x_rx *rx = context;
196 struct lan743x_adapter *adapter = rx->adapter;
197 bool enable_flag = true;
198
199 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
200 lan743x_csr_write(adapter, INT_EN_CLR,
201 INT_BIT_DMA_RX_(rx->channel_number));
202 }
203
204 if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) {
205 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number);
206 u32 dmac_int_sts;
207 u32 dmac_int_en;
208
209 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
210 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
211 else
212 dmac_int_sts = rx_frame_bit;
213 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
214 dmac_int_en = lan743x_csr_read(adapter,
215 DMAC_INT_EN_SET);
216 else
217 dmac_int_en = rx_frame_bit;
218
219 dmac_int_en &= rx_frame_bit;
220 dmac_int_sts &= dmac_int_en;
221 if (dmac_int_sts & rx_frame_bit) {
222 napi_schedule(&rx->napi);
223 enable_flag = false;
224 }
225 }
226
227 if (enable_flag) {
228
229 lan743x_csr_write(adapter, INT_EN_SET,
230 INT_BIT_DMA_RX_(rx->channel_number));
231 }
232}
233
234static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
235{
236 struct lan743x_adapter *adapter = context;
237 unsigned int channel;
238
239 if (int_sts & INT_BIT_ALL_RX_) {
240 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS;
241 channel++) {
242 u32 int_bit = INT_BIT_DMA_RX_(channel);
243
244 if (int_sts & int_bit) {
245 lan743x_rx_isr(&adapter->rx[channel],
246 int_bit, flags);
247 int_sts &= ~int_bit;
248 }
249 }
250 }
251 if (int_sts & INT_BIT_ALL_TX_) {
252 for (channel = 0; channel < LAN743X_USED_TX_CHANNELS;
253 channel++) {
254 u32 int_bit = INT_BIT_DMA_TX_(channel);
255
256 if (int_sts & int_bit) {
257 lan743x_tx_isr(&adapter->tx[channel],
258 int_bit, flags);
259 int_sts &= ~int_bit;
260 }
261 }
262 }
263 if (int_sts & INT_BIT_ALL_OTHER_) {
264 if (int_sts & INT_BIT_SW_GP_) {
265 lan743x_intr_software_isr(adapter);
266 int_sts &= ~INT_BIT_SW_GP_;
267 }
268 }
269 if (int_sts)
270 lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
271}
272
273static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr)
274{
275 struct lan743x_vector *vector = ptr;
276 struct lan743x_adapter *adapter = vector->adapter;
277 irqreturn_t result = IRQ_NONE;
278 u32 int_enables;
279 u32 int_sts;
280
281 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) {
282 int_sts = lan743x_csr_read(adapter, INT_STS);
283 } else if (vector->flags &
284 (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C |
285 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) {
286 int_sts = lan743x_csr_read(adapter, INT_STS_R2C);
287 } else {
288
289 int_sts = vector->int_mask | INT_BIT_MAS_;
290 }
291
292 if (!(int_sts & INT_BIT_MAS_))
293 goto irq_done;
294
295 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR)
296
297 lan743x_csr_write(adapter,
298 INT_VEC_EN_CLR,
299 INT_VEC_EN_(vector->vector_index));
300
301 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR)
302
303 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
304
305 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) {
306 int_enables = lan743x_csr_read(adapter, INT_EN_SET);
307 } else {
308
309 int_enables = vector->int_mask;
310 }
311
312 int_sts &= int_enables;
313 int_sts &= vector->int_mask;
314 if (int_sts) {
315 if (vector->handler) {
316 vector->handler(vector->context,
317 int_sts, vector->flags);
318 } else {
319
320 lan743x_csr_write(adapter, INT_EN_CLR,
321 vector->int_mask);
322 }
323 result = IRQ_HANDLED;
324 }
325
326 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET)
327
328 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
329
330 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET)
331
332 lan743x_csr_write(adapter,
333 INT_VEC_EN_SET,
334 INT_VEC_EN_(vector->vector_index));
335irq_done:
336 return result;
337}
338
339static int lan743x_intr_test_isr(struct lan743x_adapter *adapter)
340{
341 struct lan743x_intr *intr = &adapter->intr;
342 int result = -ENODEV;
343 int timeout = 10;
344
345 intr->software_isr_flag = 0;
346
347
348 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_);
349
350
351 lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_);
352 while ((timeout > 0) && (!(intr->software_isr_flag))) {
353 usleep_range(1000, 20000);
354 timeout--;
355 }
356
357 if (intr->software_isr_flag)
358 result = 0;
359
360
361 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
362 return result;
363}
364
365static int lan743x_intr_register_isr(struct lan743x_adapter *adapter,
366 int vector_index, u32 flags,
367 u32 int_mask,
368 lan743x_vector_handler handler,
369 void *context)
370{
371 struct lan743x_vector *vector = &adapter->intr.vector_list
372 [vector_index];
373 int ret;
374
375 vector->adapter = adapter;
376 vector->flags = flags;
377 vector->vector_index = vector_index;
378 vector->int_mask = int_mask;
379 vector->handler = handler;
380 vector->context = context;
381
382 ret = request_irq(vector->irq,
383 lan743x_intr_entry_isr,
384 (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ?
385 IRQF_SHARED : 0, DRIVER_NAME, vector);
386 if (ret) {
387 vector->handler = NULL;
388 vector->context = NULL;
389 vector->int_mask = 0;
390 vector->flags = 0;
391 }
392 return ret;
393}
394
395static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter,
396 int vector_index)
397{
398 struct lan743x_vector *vector = &adapter->intr.vector_list
399 [vector_index];
400
401 free_irq(vector->irq, vector);
402 vector->handler = NULL;
403 vector->context = NULL;
404 vector->int_mask = 0;
405 vector->flags = 0;
406}
407
408static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter,
409 u32 int_mask)
410{
411 int index;
412
413 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) {
414 if (adapter->intr.vector_list[index].int_mask & int_mask)
415 return adapter->intr.vector_list[index].flags;
416 }
417 return 0;
418}
419
420static void lan743x_intr_close(struct lan743x_adapter *adapter)
421{
422 struct lan743x_intr *intr = &adapter->intr;
423 int index = 0;
424
425 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
426 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF);
427
428 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) {
429 if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) {
430 lan743x_intr_unregister_isr(adapter, index);
431 intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index);
432 }
433 }
434
435 if (intr->flags & INTR_FLAG_MSI_ENABLED) {
436 pci_disable_msi(adapter->pdev);
437 intr->flags &= ~INTR_FLAG_MSI_ENABLED;
438 }
439
440 if (intr->flags & INTR_FLAG_MSIX_ENABLED) {
441 pci_disable_msix(adapter->pdev);
442 intr->flags &= ~INTR_FLAG_MSIX_ENABLED;
443 }
444}
445
446static int lan743x_intr_open(struct lan743x_adapter *adapter)
447{
448 struct msix_entry msix_entries[LAN743X_MAX_VECTOR_COUNT];
449 struct lan743x_intr *intr = &adapter->intr;
450 u32 int_vec_en_auto_clr = 0;
451 u32 int_vec_map0 = 0;
452 u32 int_vec_map1 = 0;
453 int ret = -ENODEV;
454 int index = 0;
455 u32 flags = 0;
456
457 intr->number_of_vectors = 0;
458
459
460 memset(&msix_entries[0], 0,
461 sizeof(struct msix_entry) * LAN743X_MAX_VECTOR_COUNT);
462 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++)
463 msix_entries[index].entry = index;
464 ret = pci_enable_msix_range(adapter->pdev,
465 msix_entries, 1,
466 1 + LAN743X_USED_TX_CHANNELS +
467 LAN743X_USED_RX_CHANNELS);
468
469 if (ret > 0) {
470 intr->flags |= INTR_FLAG_MSIX_ENABLED;
471 intr->number_of_vectors = ret;
472 intr->using_vectors = true;
473 for (index = 0; index < intr->number_of_vectors; index++)
474 intr->vector_list[index].irq = msix_entries
475 [index].vector;
476 netif_info(adapter, ifup, adapter->netdev,
477 "using MSIX interrupts, number of vectors = %d\n",
478 intr->number_of_vectors);
479 }
480
481
482 if (!intr->number_of_vectors) {
483 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
484 if (!pci_enable_msi(adapter->pdev)) {
485 intr->flags |= INTR_FLAG_MSI_ENABLED;
486 intr->number_of_vectors = 1;
487 intr->using_vectors = true;
488 intr->vector_list[0].irq =
489 adapter->pdev->irq;
490 netif_info(adapter, ifup, adapter->netdev,
491 "using MSI interrupts, number of vectors = %d\n",
492 intr->number_of_vectors);
493 }
494 }
495 }
496
497
498 if (!intr->number_of_vectors) {
499 intr->number_of_vectors = 1;
500 intr->using_vectors = false;
501 intr->vector_list[0].irq = intr->irq;
502 netif_info(adapter, ifup, adapter->netdev,
503 "using legacy interrupts\n");
504 }
505
506
507 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF);
508
509
510 lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000);
511 lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000);
512 lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000);
513 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
514 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
515 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
516 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
517
518 if (intr->using_vectors) {
519 flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
520 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
521 } else {
522 flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR |
523 LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET |
524 LAN743X_VECTOR_FLAG_IRQ_SHARED;
525 }
526
527 if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
528 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ;
529 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C;
530 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
531 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK;
532 flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C;
533 flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C;
534 }
535
536 ret = lan743x_intr_register_isr(adapter, 0, flags,
537 INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ |
538 INT_BIT_ALL_OTHER_,
539 lan743x_intr_shared_isr, adapter);
540 if (ret)
541 goto clean_up;
542 intr->flags |= INTR_FLAG_IRQ_REQUESTED(0);
543
544 if (intr->using_vectors)
545 lan743x_csr_write(adapter, INT_VEC_EN_SET,
546 INT_VEC_EN_(0));
547
548 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
549 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD);
550 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD);
551 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD);
552 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD);
553 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD);
554 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD);
555 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD);
556 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD);
557 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432);
558 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001);
559 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF);
560 }
561
562
563 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
564 ret = lan743x_intr_test_isr(adapter);
565 if (ret)
566 goto clean_up;
567
568 if (intr->number_of_vectors > 1) {
569 int number_of_tx_vectors = intr->number_of_vectors - 1;
570
571 if (number_of_tx_vectors > LAN743X_USED_TX_CHANNELS)
572 number_of_tx_vectors = LAN743X_USED_TX_CHANNELS;
573 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
574 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
575 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
576 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
577 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
578 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
579
580 if (adapter->csr.flags &
581 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
582 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
583 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
584 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
585 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
586 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
587 }
588
589 for (index = 0; index < number_of_tx_vectors; index++) {
590 u32 int_bit = INT_BIT_DMA_TX_(index);
591 int vector = index + 1;
592
593
594 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector);
595 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1);
596 if (flags &
597 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
598 int_vec_en_auto_clr |= INT_VEC_EN_(vector);
599 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
600 int_vec_en_auto_clr);
601 }
602
603
604 intr->vector_list[0].int_mask &= ~int_bit;
605 ret = lan743x_intr_register_isr(adapter, vector, flags,
606 int_bit, lan743x_tx_isr,
607 &adapter->tx[index]);
608 if (ret)
609 goto clean_up;
610 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
611 if (!(flags &
612 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET))
613 lan743x_csr_write(adapter, INT_VEC_EN_SET,
614 INT_VEC_EN_(vector));
615 }
616 }
617 if ((intr->number_of_vectors - LAN743X_USED_TX_CHANNELS) > 1) {
618 int number_of_rx_vectors = intr->number_of_vectors -
619 LAN743X_USED_TX_CHANNELS - 1;
620
621 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS)
622 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS;
623
624 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
625 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
626 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
627 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
628 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
629 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
630
631 if (adapter->csr.flags &
632 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
633 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
634 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
635 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
636 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
637 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
638 }
639 for (index = 0; index < number_of_rx_vectors; index++) {
640 int vector = index + 1 + LAN743X_USED_TX_CHANNELS;
641 u32 int_bit = INT_BIT_DMA_RX_(index);
642
643
644 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector);
645 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0);
646 if (flags &
647 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
648 int_vec_en_auto_clr |= INT_VEC_EN_(vector);
649 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
650 int_vec_en_auto_clr);
651 }
652
653
654 intr->vector_list[0].int_mask &= ~int_bit;
655 ret = lan743x_intr_register_isr(adapter, vector, flags,
656 int_bit, lan743x_rx_isr,
657 &adapter->rx[index]);
658 if (ret)
659 goto clean_up;
660 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
661
662 lan743x_csr_write(adapter, INT_VEC_EN_SET,
663 INT_VEC_EN_(vector));
664 }
665 }
666 return 0;
667
668clean_up:
669 lan743x_intr_close(adapter);
670 return ret;
671}
672
673static int lan743x_dp_write(struct lan743x_adapter *adapter,
674 u32 select, u32 addr, u32 length, u32 *buf)
675{
676 int ret = -EIO;
677 u32 dp_sel;
678 int i;
679
680 mutex_lock(&adapter->dp_lock);
681 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
682 1, 40, 100, 100))
683 goto unlock;
684 dp_sel = lan743x_csr_read(adapter, DP_SEL);
685 dp_sel &= ~DP_SEL_MASK_;
686 dp_sel |= select;
687 lan743x_csr_write(adapter, DP_SEL, dp_sel);
688
689 for (i = 0; i < length; i++) {
690 lan743x_csr_write(adapter, DP_ADDR, addr + i);
691 lan743x_csr_write(adapter, DP_DATA_0, buf[i]);
692 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_);
693 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
694 1, 40, 100, 100))
695 goto unlock;
696 }
697 ret = 0;
698
699unlock:
700 mutex_unlock(&adapter->dp_lock);
701 return ret;
702}
703
704static u32 lan743x_mac_mii_access(u16 id, u16 index, int read)
705{
706 u32 ret;
707
708 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
709 MAC_MII_ACC_PHY_ADDR_MASK_;
710 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) &
711 MAC_MII_ACC_MIIRINDA_MASK_;
712
713 if (read)
714 ret |= MAC_MII_ACC_MII_READ_;
715 else
716 ret |= MAC_MII_ACC_MII_WRITE_;
717 ret |= MAC_MII_ACC_MII_BUSY_;
718
719 return ret;
720}
721
722static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter)
723{
724 u32 data;
725
726 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data,
727 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000);
728}
729
730static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index)
731{
732 struct lan743x_adapter *adapter = bus->priv;
733 u32 val, mii_access;
734 int ret;
735
736
737 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
738 if (ret < 0)
739 return ret;
740
741
742 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ);
743 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
744 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
745 if (ret < 0)
746 return ret;
747
748 val = lan743x_csr_read(adapter, MAC_MII_DATA);
749 return (int)(val & 0xFFFF);
750}
751
752static int lan743x_mdiobus_write(struct mii_bus *bus,
753 int phy_id, int index, u16 regval)
754{
755 struct lan743x_adapter *adapter = bus->priv;
756 u32 val, mii_access;
757 int ret;
758
759
760 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
761 if (ret < 0)
762 return ret;
763 val = (u32)regval;
764 lan743x_csr_write(adapter, MAC_MII_DATA, val);
765
766
767 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE);
768 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
769 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
770 return ret;
771}
772
773static void lan743x_mac_set_address(struct lan743x_adapter *adapter,
774 u8 *addr)
775{
776 u32 addr_lo, addr_hi;
777
778 addr_lo = addr[0] |
779 addr[1] << 8 |
780 addr[2] << 16 |
781 addr[3] << 24;
782 addr_hi = addr[4] |
783 addr[5] << 8;
784 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo);
785 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi);
786
787 ether_addr_copy(adapter->mac_address, addr);
788 netif_info(adapter, drv, adapter->netdev,
789 "MAC address set to %pM\n", addr);
790}
791
792static int lan743x_mac_init(struct lan743x_adapter *adapter)
793{
794 bool mac_address_valid = true;
795 struct net_device *netdev;
796 u32 mac_addr_hi = 0;
797 u32 mac_addr_lo = 0;
798 u32 data;
799 int ret;
800
801 netdev = adapter->netdev;
802 lan743x_csr_write(adapter, MAC_CR, MAC_CR_RST_);
803 ret = lan743x_csr_wait_for_bit(adapter, MAC_CR, MAC_CR_RST_,
804 0, 1000, 20000, 100);
805 if (ret)
806 return ret;
807
808
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 random_ether_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
837static 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
849static 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
866static 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
872
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
882static 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
914static int lan743x_phy_reset(struct lan743x_adapter *adapter)
915{
916 u32 data;
917
918
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
930static 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
947static int lan743x_phy_init(struct lan743x_adapter *adapter)
948{
949 return lan743x_phy_reset(adapter);
950}
951
952static 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 }
978}
979
980static void lan743x_phy_close(struct lan743x_adapter *adapter)
981{
982 struct net_device *netdev = adapter->netdev;
983
984 phy_stop(netdev->phydev);
985 phy_disconnect(netdev->phydev);
986 netdev->phydev = NULL;
987}
988
989static int lan743x_phy_open(struct lan743x_adapter *adapter)
990{
991 struct lan743x_phy *phy = &adapter->phy;
992 struct phy_device *phydev;
993 struct net_device *netdev;
994 int ret = -EIO;
995
996 netdev = adapter->netdev;
997 phydev = phy_find_first(adapter->mdiobus);
998 if (!phydev)
999 goto return_error;
1000
1001 ret = phy_connect_direct(netdev, phydev,
1002 lan743x_phy_link_status_change,
1003 PHY_INTERFACE_MODE_GMII);
1004 if (ret)
1005 goto return_error;
1006
1007
1008 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
1009
1010
1011 phy_support_asym_pause(phydev);
1012 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
1013 phy->fc_autoneg = phydev->autoneg;
1014
1015 phy_start(phydev);
1016 phy_start_aneg(phydev);
1017 return 0;
1018
1019return_error:
1020 return ret;
1021}
1022
1023static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter)
1024{
1025 u8 *mac_addr;
1026 u32 mac_addr_hi = 0;
1027 u32 mac_addr_lo = 0;
1028
1029
1030 mac_addr = adapter->mac_address;
1031 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) |
1032 (((u32)(mac_addr[1])) << 8) |
1033 (((u32)(mac_addr[2])) << 16) |
1034 (((u32)(mac_addr[3])) << 24));
1035 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) |
1036 (((u32)(mac_addr[5])) << 8));
1037
1038 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo);
1039 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0),
1040 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_);
1041}
1042
1043static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter)
1044{
1045 struct net_device *netdev = adapter->netdev;
1046 u32 hash_table[DP_SEL_VHF_HASH_LEN];
1047 u32 rfctl;
1048 u32 data;
1049
1050 rfctl = lan743x_csr_read(adapter, RFE_CTL);
1051 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ |
1052 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
1053 rfctl |= RFE_CTL_AB_;
1054 if (netdev->flags & IFF_PROMISC) {
1055 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_;
1056 } else {
1057 if (netdev->flags & IFF_ALLMULTI)
1058 rfctl |= RFE_CTL_AM_;
1059 }
1060
1061 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32));
1062 if (netdev_mc_count(netdev)) {
1063 struct netdev_hw_addr *ha;
1064 int i;
1065
1066 rfctl |= RFE_CTL_DA_PERFECT_;
1067 i = 1;
1068 netdev_for_each_mc_addr(ha, netdev) {
1069
1070 if (i < 33) {
1071 lan743x_csr_write(adapter,
1072 RFE_ADDR_FILT_HI(i), 0);
1073 data = ha->addr[3];
1074 data = ha->addr[2] | (data << 8);
1075 data = ha->addr[1] | (data << 8);
1076 data = ha->addr[0] | (data << 8);
1077 lan743x_csr_write(adapter,
1078 RFE_ADDR_FILT_LO(i), data);
1079 data = ha->addr[5];
1080 data = ha->addr[4] | (data << 8);
1081 data |= RFE_ADDR_FILT_HI_VALID_;
1082 lan743x_csr_write(adapter,
1083 RFE_ADDR_FILT_HI(i), data);
1084 } else {
1085 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >>
1086 23) & 0x1FF;
1087 hash_table[bitnum / 32] |= (1 << (bitnum % 32));
1088 rfctl |= RFE_CTL_MCAST_HASH_;
1089 }
1090 i++;
1091 }
1092 }
1093
1094 lan743x_dp_write(adapter, DP_SEL_RFE_RAM,
1095 DP_SEL_VHF_VLAN_LEN,
1096 DP_SEL_VHF_HASH_LEN, hash_table);
1097 lan743x_csr_write(adapter, RFE_CTL, rfctl);
1098}
1099
1100static int lan743x_dmac_init(struct lan743x_adapter *adapter)
1101{
1102 u32 data = 0;
1103
1104 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_);
1105 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_,
1106 0, 1000, 20000, 100);
1107 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) {
1108 case DMA_DESCRIPTOR_SPACING_16:
1109 data = DMAC_CFG_MAX_DSPACE_16_;
1110 break;
1111 case DMA_DESCRIPTOR_SPACING_32:
1112 data = DMAC_CFG_MAX_DSPACE_32_;
1113 break;
1114 case DMA_DESCRIPTOR_SPACING_64:
1115 data = DMAC_CFG_MAX_DSPACE_64_;
1116 break;
1117 case DMA_DESCRIPTOR_SPACING_128:
1118 data = DMAC_CFG_MAX_DSPACE_128_;
1119 break;
1120 default:
1121 return -EPERM;
1122 }
1123 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1124 data |= DMAC_CFG_COAL_EN_;
1125 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_;
1126 data |= DMAC_CFG_MAX_READ_REQ_SET_(6);
1127 lan743x_csr_write(adapter, DMAC_CFG, data);
1128 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1);
1129 data |= DMAC_COAL_CFG_TIMER_TX_START_;
1130 data |= DMAC_COAL_CFG_FLUSH_INTS_;
1131 data |= DMAC_COAL_CFG_INT_EXIT_COAL_;
1132 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_;
1133 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A);
1134 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C);
1135 lan743x_csr_write(adapter, DMAC_COAL_CFG, data);
1136 data = DMAC_OBFF_TX_THRES_SET_(0x08);
1137 data |= DMAC_OBFF_RX_THRES_SET_(0x0A);
1138 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data);
1139 return 0;
1140}
1141
1142static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter,
1143 int tx_channel)
1144{
1145 u32 dmac_cmd = 0;
1146
1147 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1148 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1149 DMAC_CMD_START_T_(tx_channel)),
1150 (dmac_cmd &
1151 DMAC_CMD_STOP_T_(tx_channel)));
1152}
1153
1154static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter,
1155 int tx_channel)
1156{
1157 int timeout = 100;
1158 int result = 0;
1159
1160 while (timeout &&
1161 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) ==
1162 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1163 usleep_range(1000, 20000);
1164 timeout--;
1165 }
1166 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1167 result = -ENODEV;
1168 return result;
1169}
1170
1171static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter,
1172 int rx_channel)
1173{
1174 u32 dmac_cmd = 0;
1175
1176 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1177 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1178 DMAC_CMD_START_R_(rx_channel)),
1179 (dmac_cmd &
1180 DMAC_CMD_STOP_R_(rx_channel)));
1181}
1182
1183static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter,
1184 int rx_channel)
1185{
1186 int timeout = 100;
1187 int result = 0;
1188
1189 while (timeout &&
1190 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) ==
1191 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1192 usleep_range(1000, 20000);
1193 timeout--;
1194 }
1195 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1196 result = -ENODEV;
1197 return result;
1198}
1199
1200static void lan743x_tx_release_desc(struct lan743x_tx *tx,
1201 int descriptor_index, bool cleanup)
1202{
1203 struct lan743x_tx_buffer_info *buffer_info = NULL;
1204 struct lan743x_tx_descriptor *descriptor = NULL;
1205 u32 descriptor_type = 0;
1206
1207 descriptor = &tx->ring_cpu_ptr[descriptor_index];
1208 buffer_info = &tx->buffer_info[descriptor_index];
1209 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE))
1210 goto done;
1211
1212 descriptor_type = (descriptor->data0) &
1213 TX_DESC_DATA0_DTYPE_MASK_;
1214 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_)
1215 goto clean_up_data_descriptor;
1216 else
1217 goto clear_active;
1218
1219clean_up_data_descriptor:
1220 if (buffer_info->dma_ptr) {
1221 if (buffer_info->flags &
1222 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) {
1223 dma_unmap_page(&tx->adapter->pdev->dev,
1224 buffer_info->dma_ptr,
1225 buffer_info->buffer_length,
1226 DMA_TO_DEVICE);
1227 } else {
1228 dma_unmap_single(&tx->adapter->pdev->dev,
1229 buffer_info->dma_ptr,
1230 buffer_info->buffer_length,
1231 DMA_TO_DEVICE);
1232 }
1233 buffer_info->dma_ptr = 0;
1234 buffer_info->buffer_length = 0;
1235 }
1236 if (buffer_info->skb) {
1237 dev_kfree_skb(buffer_info->skb);
1238 buffer_info->skb = NULL;
1239 }
1240
1241clear_active:
1242 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE;
1243
1244done:
1245 memset(buffer_info, 0, sizeof(*buffer_info));
1246 memset(descriptor, 0, sizeof(*descriptor));
1247}
1248
1249static int lan743x_tx_next_index(struct lan743x_tx *tx, int index)
1250{
1251 return ((++index) % tx->ring_size);
1252}
1253
1254static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx)
1255{
1256 while ((*tx->head_cpu_ptr) != (tx->last_head)) {
1257 lan743x_tx_release_desc(tx, tx->last_head, false);
1258 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1259 }
1260}
1261
1262static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx)
1263{
1264 u32 original_head = 0;
1265
1266 original_head = tx->last_head;
1267 do {
1268 lan743x_tx_release_desc(tx, tx->last_head, true);
1269 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1270 } while (tx->last_head != original_head);
1271 memset(tx->ring_cpu_ptr, 0,
1272 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size));
1273 memset(tx->buffer_info, 0,
1274 sizeof(*tx->buffer_info) * (tx->ring_size));
1275}
1276
1277static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx,
1278 struct sk_buff *skb)
1279{
1280 int result = 1;
1281 int nr_frags = 0;
1282
1283 if (skb_is_gso(skb))
1284 result++;
1285 nr_frags = skb_shinfo(skb)->nr_frags;
1286 result += nr_frags;
1287 return result;
1288}
1289
1290static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx)
1291{
1292 int last_head = tx->last_head;
1293 int last_tail = tx->last_tail;
1294
1295 if (last_tail >= last_head)
1296 return tx->ring_size - last_tail + last_head - 1;
1297 else
1298 return last_head - last_tail - 1;
1299}
1300
1301static int lan743x_tx_frame_start(struct lan743x_tx *tx,
1302 unsigned char *first_buffer,
1303 unsigned int first_buffer_length,
1304 unsigned int frame_length,
1305 bool check_sum)
1306{
1307
1308
1309
1310 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1311 struct lan743x_tx_buffer_info *buffer_info = NULL;
1312 struct lan743x_adapter *adapter = tx->adapter;
1313 struct device *dev = &adapter->pdev->dev;
1314 dma_addr_t dma_ptr;
1315
1316 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS;
1317 tx->frame_first = tx->last_tail;
1318 tx->frame_tail = tx->frame_first;
1319
1320 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1321 buffer_info = &tx->buffer_info[tx->frame_tail];
1322 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length,
1323 DMA_TO_DEVICE);
1324 if (dma_mapping_error(dev, dma_ptr))
1325 return -ENOMEM;
1326
1327 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr);
1328 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr);
1329 tx_descriptor->data3 = (frame_length << 16) &
1330 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_;
1331
1332 buffer_info->skb = NULL;
1333 buffer_info->dma_ptr = dma_ptr;
1334 buffer_info->buffer_length = first_buffer_length;
1335 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1336
1337 tx->frame_data0 = (first_buffer_length &
1338 TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1339 TX_DESC_DATA0_DTYPE_DATA_ |
1340 TX_DESC_DATA0_FS_ |
1341 TX_DESC_DATA0_FCS_;
1342
1343 if (check_sum)
1344 tx->frame_data0 |= TX_DESC_DATA0_ICE_ |
1345 TX_DESC_DATA0_IPE_ |
1346 TX_DESC_DATA0_TPE_;
1347
1348
1349 return 0;
1350}
1351
1352static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx,
1353 unsigned int frame_length)
1354{
1355
1356
1357
1358 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1359 struct lan743x_tx_buffer_info *buffer_info = NULL;
1360
1361
1362 tx->frame_data0 |= TX_DESC_DATA0_EXT_;
1363 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1364 tx_descriptor->data0 = tx->frame_data0;
1365
1366
1367 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1368 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1369 buffer_info = &tx->buffer_info[tx->frame_tail];
1370
1371
1372 tx_descriptor->data1 = 0;
1373 tx_descriptor->data2 = 0;
1374 tx_descriptor->data3 = 0;
1375
1376 buffer_info->skb = NULL;
1377 buffer_info->dma_ptr = 0;
1378 buffer_info->buffer_length = 0;
1379 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1380
1381 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) |
1382 TX_DESC_DATA0_DTYPE_EXT_ |
1383 TX_DESC_DATA0_EXT_LSO_;
1384
1385
1386}
1387
1388static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx,
1389 const struct skb_frag_struct *fragment,
1390 unsigned int frame_length)
1391{
1392
1393
1394
1395 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1396 struct lan743x_tx_buffer_info *buffer_info = NULL;
1397 struct lan743x_adapter *adapter = tx->adapter;
1398 struct device *dev = &adapter->pdev->dev;
1399 unsigned int fragment_length = 0;
1400 dma_addr_t dma_ptr;
1401
1402 fragment_length = skb_frag_size(fragment);
1403 if (!fragment_length)
1404 return 0;
1405
1406
1407 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1408 tx_descriptor->data0 = tx->frame_data0;
1409
1410
1411 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1412 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1413 buffer_info = &tx->buffer_info[tx->frame_tail];
1414 dma_ptr = skb_frag_dma_map(dev, fragment,
1415 0, fragment_length,
1416 DMA_TO_DEVICE);
1417 if (dma_mapping_error(dev, dma_ptr)) {
1418 int desc_index;
1419
1420
1421 desc_index = tx->frame_first;
1422 while (desc_index != tx->frame_tail) {
1423 lan743x_tx_release_desc(tx, desc_index, true);
1424 desc_index = lan743x_tx_next_index(tx, desc_index);
1425 }
1426 dma_wmb();
1427 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1428 tx->frame_first = 0;
1429 tx->frame_data0 = 0;
1430 tx->frame_tail = 0;
1431 return -ENOMEM;
1432 }
1433
1434 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr);
1435 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr);
1436 tx_descriptor->data3 = (frame_length << 16) &
1437 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_;
1438
1439 buffer_info->skb = NULL;
1440 buffer_info->dma_ptr = dma_ptr;
1441 buffer_info->buffer_length = fragment_length;
1442 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1443 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT;
1444
1445 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1446 TX_DESC_DATA0_DTYPE_DATA_ |
1447 TX_DESC_DATA0_FCS_;
1448
1449
1450 return 0;
1451}
1452
1453static void lan743x_tx_frame_end(struct lan743x_tx *tx,
1454 struct sk_buff *skb,
1455 bool ignore_sync)
1456{
1457
1458
1459
1460 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1461 struct lan743x_tx_buffer_info *buffer_info = NULL;
1462 struct lan743x_adapter *adapter = tx->adapter;
1463 u32 tx_tail_flags = 0;
1464
1465
1466 tx->frame_data0 |= TX_DESC_DATA0_LS_;
1467 tx->frame_data0 |= TX_DESC_DATA0_IOC_;
1468
1469 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1470 buffer_info = &tx->buffer_info[tx->frame_tail];
1471 buffer_info->skb = skb;
1472 if (ignore_sync)
1473 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC;
1474
1475 tx_descriptor->data0 = tx->frame_data0;
1476 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1477 tx->last_tail = tx->frame_tail;
1478
1479 dma_wmb();
1480
1481 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
1482 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_;
1483 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)
1484 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ |
1485 TX_TAIL_SET_TOP_INT_EN_;
1486
1487 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
1488 tx_tail_flags | tx->frame_tail);
1489 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1490}
1491
1492static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
1493 struct sk_buff *skb)
1494{
1495 int required_number_of_descriptors = 0;
1496 unsigned int start_frame_length = 0;
1497 unsigned int frame_length = 0;
1498 unsigned int head_length = 0;
1499 unsigned long irq_flags = 0;
1500 bool ignore_sync = false;
1501 int nr_frags = 0;
1502 bool gso = false;
1503 int j;
1504
1505 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb);
1506
1507 spin_lock_irqsave(&tx->ring_lock, irq_flags);
1508 if (required_number_of_descriptors >
1509 lan743x_tx_get_avail_desc(tx)) {
1510 if (required_number_of_descriptors > (tx->ring_size - 1)) {
1511 dev_kfree_skb(skb);
1512 } else {
1513
1514 tx->overflow_skb = skb;
1515 netif_stop_queue(tx->adapter->netdev);
1516 }
1517 goto unlock;
1518 }
1519
1520
1521 head_length = skb_headlen(skb);
1522 frame_length = skb_pagelen(skb);
1523 nr_frags = skb_shinfo(skb)->nr_frags;
1524 start_frame_length = frame_length;
1525 gso = skb_is_gso(skb);
1526 if (gso) {
1527 start_frame_length = max(skb_shinfo(skb)->gso_size,
1528 (unsigned short)8);
1529 }
1530
1531 if (lan743x_tx_frame_start(tx,
1532 skb->data, head_length,
1533 start_frame_length,
1534 skb->ip_summed == CHECKSUM_PARTIAL)) {
1535 dev_kfree_skb(skb);
1536 goto unlock;
1537 }
1538
1539 if (gso)
1540 lan743x_tx_frame_add_lso(tx, frame_length);
1541
1542 if (nr_frags <= 0)
1543 goto finish;
1544
1545 for (j = 0; j < nr_frags; j++) {
1546 const struct skb_frag_struct *frag;
1547
1548 frag = &(skb_shinfo(skb)->frags[j]);
1549 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) {
1550
1551
1552
1553
1554
1555 dev_kfree_skb(skb);
1556 goto unlock;
1557 }
1558 }
1559
1560finish:
1561 lan743x_tx_frame_end(tx, skb, ignore_sync);
1562
1563unlock:
1564 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
1565 return NETDEV_TX_OK;
1566}
1567
1568static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight)
1569{
1570 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi);
1571 struct lan743x_adapter *adapter = tx->adapter;
1572 bool start_transmitter = false;
1573 unsigned long irq_flags = 0;
1574 u32 ioc_bit = 0;
1575 u32 int_sts = 0;
1576
1577 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
1578 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
1579 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C)
1580 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit);
1581 spin_lock_irqsave(&tx->ring_lock, irq_flags);
1582
1583
1584 lan743x_tx_release_completed_descriptors(tx);
1585 if (netif_queue_stopped(adapter->netdev)) {
1586 if (tx->overflow_skb) {
1587 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <=
1588 lan743x_tx_get_avail_desc(tx))
1589 start_transmitter = true;
1590 } else {
1591 netif_wake_queue(adapter->netdev);
1592 }
1593 }
1594 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
1595
1596 if (start_transmitter) {
1597
1598 lan743x_tx_xmit_frame(tx, tx->overflow_skb);
1599 tx->overflow_skb = NULL;
1600 netif_wake_queue(adapter->netdev);
1601 }
1602
1603 if (!napi_complete_done(napi, weight))
1604 goto done;
1605
1606
1607 lan743x_csr_write(adapter, INT_EN_SET,
1608 INT_BIT_DMA_TX_(tx->channel_number));
1609 lan743x_csr_read(adapter, INT_STS);
1610
1611done:
1612 return weight;
1613}
1614
1615static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx)
1616{
1617 if (tx->head_cpu_ptr) {
1618 pci_free_consistent(tx->adapter->pdev,
1619 sizeof(*tx->head_cpu_ptr),
1620 (void *)(tx->head_cpu_ptr),
1621 tx->head_dma_ptr);
1622 tx->head_cpu_ptr = NULL;
1623 tx->head_dma_ptr = 0;
1624 }
1625 kfree(tx->buffer_info);
1626 tx->buffer_info = NULL;
1627
1628 if (tx->ring_cpu_ptr) {
1629 pci_free_consistent(tx->adapter->pdev,
1630 tx->ring_allocation_size,
1631 tx->ring_cpu_ptr,
1632 tx->ring_dma_ptr);
1633 tx->ring_allocation_size = 0;
1634 tx->ring_cpu_ptr = NULL;
1635 tx->ring_dma_ptr = 0;
1636 }
1637 tx->ring_size = 0;
1638}
1639
1640static int lan743x_tx_ring_init(struct lan743x_tx *tx)
1641{
1642 size_t ring_allocation_size = 0;
1643 void *cpu_ptr = NULL;
1644 dma_addr_t dma_ptr;
1645 int ret = -ENOMEM;
1646
1647 tx->ring_size = LAN743X_TX_RING_SIZE;
1648 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) {
1649 ret = -EINVAL;
1650 goto cleanup;
1651 }
1652 ring_allocation_size = ALIGN(tx->ring_size *
1653 sizeof(struct lan743x_tx_descriptor),
1654 PAGE_SIZE);
1655 dma_ptr = 0;
1656 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev,
1657 ring_allocation_size, &dma_ptr);
1658 if (!cpu_ptr) {
1659 ret = -ENOMEM;
1660 goto cleanup;
1661 }
1662
1663 tx->ring_allocation_size = ring_allocation_size;
1664 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr;
1665 tx->ring_dma_ptr = dma_ptr;
1666
1667 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL);
1668 if (!cpu_ptr) {
1669 ret = -ENOMEM;
1670 goto cleanup;
1671 }
1672 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr;
1673 dma_ptr = 0;
1674 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev,
1675 sizeof(*tx->head_cpu_ptr), &dma_ptr);
1676 if (!cpu_ptr) {
1677 ret = -ENOMEM;
1678 goto cleanup;
1679 }
1680
1681 tx->head_cpu_ptr = cpu_ptr;
1682 tx->head_dma_ptr = dma_ptr;
1683 if (tx->head_dma_ptr & 0x3) {
1684 ret = -ENOMEM;
1685 goto cleanup;
1686 }
1687
1688 return 0;
1689
1690cleanup:
1691 lan743x_tx_ring_cleanup(tx);
1692 return ret;
1693}
1694
1695static void lan743x_tx_close(struct lan743x_tx *tx)
1696{
1697 struct lan743x_adapter *adapter = tx->adapter;
1698
1699 lan743x_csr_write(adapter,
1700 DMAC_CMD,
1701 DMAC_CMD_STOP_T_(tx->channel_number));
1702 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number);
1703
1704 lan743x_csr_write(adapter,
1705 DMAC_INT_EN_CLR,
1706 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
1707 lan743x_csr_write(adapter, INT_EN_CLR,
1708 INT_BIT_DMA_TX_(tx->channel_number));
1709 napi_disable(&tx->napi);
1710 netif_napi_del(&tx->napi);
1711
1712 lan743x_csr_write(adapter, FCT_TX_CTL,
1713 FCT_TX_CTL_DIS_(tx->channel_number));
1714 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
1715 FCT_TX_CTL_EN_(tx->channel_number),
1716 0, 1000, 20000, 100);
1717
1718 lan743x_tx_release_all_descriptors(tx);
1719
1720 if (tx->overflow_skb) {
1721 dev_kfree_skb(tx->overflow_skb);
1722 tx->overflow_skb = NULL;
1723 }
1724
1725 lan743x_tx_ring_cleanup(tx);
1726}
1727
1728static int lan743x_tx_open(struct lan743x_tx *tx)
1729{
1730 struct lan743x_adapter *adapter = NULL;
1731 u32 data = 0;
1732 int ret;
1733
1734 adapter = tx->adapter;
1735 ret = lan743x_tx_ring_init(tx);
1736 if (ret)
1737 return ret;
1738
1739
1740 lan743x_csr_write(adapter, FCT_TX_CTL,
1741 FCT_TX_CTL_RESET_(tx->channel_number));
1742 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
1743 FCT_TX_CTL_RESET_(tx->channel_number),
1744 0, 1000, 20000, 100);
1745
1746
1747 lan743x_csr_write(adapter, FCT_TX_CTL,
1748 FCT_TX_CTL_EN_(tx->channel_number));
1749
1750
1751 lan743x_csr_write(adapter, DMAC_CMD,
1752 DMAC_CMD_TX_SWR_(tx->channel_number));
1753 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
1754 DMAC_CMD_TX_SWR_(tx->channel_number),
1755 0, 1000, 20000, 100);
1756
1757
1758 lan743x_csr_write(adapter,
1759 TX_BASE_ADDRH(tx->channel_number),
1760 DMA_ADDR_HIGH32(tx->ring_dma_ptr));
1761 lan743x_csr_write(adapter,
1762 TX_BASE_ADDRL(tx->channel_number),
1763 DMA_ADDR_LOW32(tx->ring_dma_ptr));
1764
1765
1766 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number));
1767 data &= ~TX_CFG_B_TX_RING_LEN_MASK_;
1768 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_);
1769 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1770 data |= TX_CFG_B_TDMABL_512_;
1771 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data);
1772
1773
1774 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_;
1775 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
1776 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_;
1777 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10);
1778 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04);
1779 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07);
1780 }
1781 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data);
1782
1783
1784 lan743x_csr_write(adapter,
1785 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number),
1786 DMA_ADDR_HIGH32(tx->head_dma_ptr));
1787 lan743x_csr_write(adapter,
1788 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number),
1789 DMA_ADDR_LOW32(tx->head_dma_ptr));
1790
1791
1792 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number));
1793
1794
1795 tx->last_tail = 0;
1796 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
1797 (u32)(tx->last_tail));
1798 tx->vector_flags = lan743x_intr_get_vector_flags(adapter,
1799 INT_BIT_DMA_TX_
1800 (tx->channel_number));
1801 netif_napi_add(adapter->netdev,
1802 &tx->napi, lan743x_tx_napi_poll,
1803 tx->ring_size - 1);
1804 napi_enable(&tx->napi);
1805
1806 data = 0;
1807 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
1808 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_;
1809 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
1810 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_;
1811 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
1812 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_;
1813 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
1814 data |= TX_CFG_C_TX_INT_EN_R2C_;
1815 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data);
1816
1817 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET))
1818 lan743x_csr_write(adapter, INT_EN_SET,
1819 INT_BIT_DMA_TX_(tx->channel_number));
1820 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
1821 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
1822
1823
1824 lan743x_csr_write(adapter, DMAC_CMD,
1825 DMAC_CMD_START_T_(tx->channel_number));
1826 return 0;
1827}
1828
1829static int lan743x_rx_next_index(struct lan743x_rx *rx, int index)
1830{
1831 return ((++index) % rx->ring_size);
1832}
1833
1834static int lan743x_rx_allocate_ring_element(struct lan743x_rx *rx, int index)
1835{
1836 struct lan743x_rx_buffer_info *buffer_info;
1837 struct lan743x_rx_descriptor *descriptor;
1838 int length = 0;
1839
1840 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING);
1841 descriptor = &rx->ring_cpu_ptr[index];
1842 buffer_info = &rx->buffer_info[index];
1843 buffer_info->skb = __netdev_alloc_skb(rx->adapter->netdev,
1844 length,
1845 GFP_ATOMIC | GFP_DMA);
1846 if (!(buffer_info->skb))
1847 return -ENOMEM;
1848 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev,
1849 buffer_info->skb->data,
1850 length,
1851 DMA_FROM_DEVICE);
1852 if (dma_mapping_error(&rx->adapter->pdev->dev,
1853 buffer_info->dma_ptr)) {
1854 buffer_info->dma_ptr = 0;
1855 return -ENOMEM;
1856 }
1857
1858 buffer_info->buffer_length = length;
1859 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr);
1860 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr);
1861 descriptor->data3 = 0;
1862 descriptor->data0 = (RX_DESC_DATA0_OWN_ |
1863 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_));
1864 skb_reserve(buffer_info->skb, RX_HEAD_PADDING);
1865
1866 return 0;
1867}
1868
1869static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index)
1870{
1871 struct lan743x_rx_buffer_info *buffer_info;
1872 struct lan743x_rx_descriptor *descriptor;
1873
1874 descriptor = &rx->ring_cpu_ptr[index];
1875 buffer_info = &rx->buffer_info[index];
1876
1877 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr);
1878 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr);
1879 descriptor->data3 = 0;
1880 descriptor->data0 = (RX_DESC_DATA0_OWN_ |
1881 ((buffer_info->buffer_length) &
1882 RX_DESC_DATA0_BUF_LENGTH_MASK_));
1883}
1884
1885static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index)
1886{
1887 struct lan743x_rx_buffer_info *buffer_info;
1888 struct lan743x_rx_descriptor *descriptor;
1889
1890 descriptor = &rx->ring_cpu_ptr[index];
1891 buffer_info = &rx->buffer_info[index];
1892
1893 memset(descriptor, 0, sizeof(*descriptor));
1894
1895 if (buffer_info->dma_ptr) {
1896 dma_unmap_single(&rx->adapter->pdev->dev,
1897 buffer_info->dma_ptr,
1898 buffer_info->buffer_length,
1899 DMA_FROM_DEVICE);
1900 buffer_info->dma_ptr = 0;
1901 }
1902
1903 if (buffer_info->skb) {
1904 dev_kfree_skb(buffer_info->skb);
1905 buffer_info->skb = NULL;
1906 }
1907
1908 memset(buffer_info, 0, sizeof(*buffer_info));
1909}
1910
1911static int lan743x_rx_process_packet(struct lan743x_rx *rx)
1912{
1913 struct skb_shared_hwtstamps *hwtstamps = NULL;
1914 int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
1915 struct lan743x_rx_buffer_info *buffer_info;
1916 struct lan743x_rx_descriptor *descriptor;
1917 int current_head_index = -1;
1918 int extension_index = -1;
1919 int first_index = -1;
1920 int last_index = -1;
1921
1922 current_head_index = *rx->head_cpu_ptr;
1923 if (current_head_index < 0 || current_head_index >= rx->ring_size)
1924 goto done;
1925
1926 if (rx->last_head < 0 || rx->last_head >= rx->ring_size)
1927 goto done;
1928
1929 if (rx->last_head != current_head_index) {
1930 descriptor = &rx->ring_cpu_ptr[rx->last_head];
1931 if (descriptor->data0 & RX_DESC_DATA0_OWN_)
1932 goto done;
1933
1934 if (!(descriptor->data0 & RX_DESC_DATA0_FS_))
1935 goto done;
1936
1937 first_index = rx->last_head;
1938 if (descriptor->data0 & RX_DESC_DATA0_LS_) {
1939 last_index = rx->last_head;
1940 } else {
1941 int index;
1942
1943 index = lan743x_rx_next_index(rx, first_index);
1944 while (index != current_head_index) {
1945 descriptor = &rx->ring_cpu_ptr[index];
1946 if (descriptor->data0 & RX_DESC_DATA0_OWN_)
1947 goto done;
1948
1949 if (descriptor->data0 & RX_DESC_DATA0_LS_) {
1950 last_index = index;
1951 break;
1952 }
1953 index = lan743x_rx_next_index(rx, index);
1954 }
1955 }
1956 if (last_index >= 0) {
1957 descriptor = &rx->ring_cpu_ptr[last_index];
1958 if (descriptor->data0 & RX_DESC_DATA0_EXT_) {
1959
1960 int index = lan743x_rx_next_index(rx,
1961 last_index);
1962 if (index != current_head_index) {
1963 descriptor = &rx->ring_cpu_ptr[index];
1964 if (descriptor->data0 &
1965 RX_DESC_DATA0_OWN_) {
1966 goto done;
1967 }
1968 if (descriptor->data0 &
1969 RX_DESC_DATA0_EXT_) {
1970 extension_index = index;
1971 } else {
1972 goto done;
1973 }
1974 } else {
1975
1976
1977 first_index = -1;
1978 last_index = -1;
1979 }
1980 }
1981 }
1982 }
1983 if (first_index >= 0 && last_index >= 0) {
1984 int real_last_index = last_index;
1985 struct sk_buff *skb = NULL;
1986 u32 ts_sec = 0;
1987 u32 ts_nsec = 0;
1988
1989
1990 if (first_index == last_index) {
1991
1992 int packet_length;
1993
1994 buffer_info = &rx->buffer_info[first_index];
1995 skb = buffer_info->skb;
1996 descriptor = &rx->ring_cpu_ptr[first_index];
1997
1998
1999 if (buffer_info->dma_ptr) {
2000 dma_unmap_single(&rx->adapter->pdev->dev,
2001 buffer_info->dma_ptr,
2002 buffer_info->buffer_length,
2003 DMA_FROM_DEVICE);
2004 buffer_info->dma_ptr = 0;
2005 buffer_info->buffer_length = 0;
2006 }
2007 buffer_info->skb = NULL;
2008 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_
2009 (descriptor->data0);
2010 skb_put(skb, packet_length - 4);
2011 skb->protocol = eth_type_trans(skb,
2012 rx->adapter->netdev);
2013 lan743x_rx_allocate_ring_element(rx, first_index);
2014 } else {
2015 int index = first_index;
2016
2017
2018
2019
2020
2021
2022
2023 if (first_index <= last_index) {
2024 while ((index >= first_index) &&
2025 (index <= last_index)) {
2026 lan743x_rx_release_ring_element(rx,
2027 index);
2028 lan743x_rx_allocate_ring_element(rx,
2029 index);
2030 index = lan743x_rx_next_index(rx,
2031 index);
2032 }
2033 } else {
2034 while ((index >= first_index) ||
2035 (index <= last_index)) {
2036 lan743x_rx_release_ring_element(rx,
2037 index);
2038 lan743x_rx_allocate_ring_element(rx,
2039 index);
2040 index = lan743x_rx_next_index(rx,
2041 index);
2042 }
2043 }
2044 }
2045
2046 if (extension_index >= 0) {
2047 descriptor = &rx->ring_cpu_ptr[extension_index];
2048 buffer_info = &rx->buffer_info[extension_index];
2049
2050 ts_sec = descriptor->data1;
2051 ts_nsec = (descriptor->data2 &
2052 RX_DESC_DATA2_TS_NS_MASK_);
2053 lan743x_rx_reuse_ring_element(rx, extension_index);
2054 real_last_index = extension_index;
2055 }
2056
2057 if (!skb) {
2058 result = RX_PROCESS_RESULT_PACKET_DROPPED;
2059 goto move_forward;
2060 }
2061
2062 if (extension_index < 0)
2063 goto pass_packet_to_os;
2064 hwtstamps = skb_hwtstamps(skb);
2065 if (hwtstamps)
2066 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec);
2067
2068pass_packet_to_os:
2069
2070 napi_gro_receive(&rx->napi, skb);
2071 result = RX_PROCESS_RESULT_PACKET_RECEIVED;
2072
2073move_forward:
2074
2075 rx->last_tail = real_last_index;
2076 rx->last_head = lan743x_rx_next_index(rx, real_last_index);
2077 }
2078done:
2079 return result;
2080}
2081
2082static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight)
2083{
2084 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi);
2085 struct lan743x_adapter *adapter = rx->adapter;
2086 u32 rx_tail_flags = 0;
2087 int count;
2088
2089 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) {
2090
2091 lan743x_csr_write(adapter, DMAC_INT_STS,
2092 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2093 }
2094 count = 0;
2095 while (count < weight) {
2096 int rx_process_result = -1;
2097
2098 rx_process_result = lan743x_rx_process_packet(rx);
2099 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) {
2100 count++;
2101 } else if (rx_process_result ==
2102 RX_PROCESS_RESULT_NOTHING_TO_DO) {
2103 break;
2104 } else if (rx_process_result ==
2105 RX_PROCESS_RESULT_PACKET_DROPPED) {
2106 continue;
2107 }
2108 }
2109 rx->frame_count += count;
2110 if (count == weight)
2111 goto done;
2112
2113 if (!napi_complete_done(napi, count))
2114 goto done;
2115
2116 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
2117 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_;
2118 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) {
2119 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_;
2120 } else {
2121 lan743x_csr_write(adapter, INT_EN_SET,
2122 INT_BIT_DMA_RX_(rx->channel_number));
2123 }
2124
2125
2126 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2127 rx_tail_flags | rx->last_tail);
2128done:
2129 return count;
2130}
2131
2132static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx)
2133{
2134 if (rx->buffer_info && rx->ring_cpu_ptr) {
2135 int index;
2136
2137 for (index = 0; index < rx->ring_size; index++)
2138 lan743x_rx_release_ring_element(rx, index);
2139 }
2140
2141 if (rx->head_cpu_ptr) {
2142 pci_free_consistent(rx->adapter->pdev,
2143 sizeof(*rx->head_cpu_ptr),
2144 rx->head_cpu_ptr,
2145 rx->head_dma_ptr);
2146 rx->head_cpu_ptr = NULL;
2147 rx->head_dma_ptr = 0;
2148 }
2149
2150 kfree(rx->buffer_info);
2151 rx->buffer_info = NULL;
2152
2153 if (rx->ring_cpu_ptr) {
2154 pci_free_consistent(rx->adapter->pdev,
2155 rx->ring_allocation_size,
2156 rx->ring_cpu_ptr,
2157 rx->ring_dma_ptr);
2158 rx->ring_allocation_size = 0;
2159 rx->ring_cpu_ptr = NULL;
2160 rx->ring_dma_ptr = 0;
2161 }
2162
2163 rx->ring_size = 0;
2164 rx->last_head = 0;
2165}
2166
2167static int lan743x_rx_ring_init(struct lan743x_rx *rx)
2168{
2169 size_t ring_allocation_size = 0;
2170 dma_addr_t dma_ptr = 0;
2171 void *cpu_ptr = NULL;
2172 int ret = -ENOMEM;
2173 int index = 0;
2174
2175 rx->ring_size = LAN743X_RX_RING_SIZE;
2176 if (rx->ring_size <= 1) {
2177 ret = -EINVAL;
2178 goto cleanup;
2179 }
2180 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) {
2181 ret = -EINVAL;
2182 goto cleanup;
2183 }
2184 ring_allocation_size = ALIGN(rx->ring_size *
2185 sizeof(struct lan743x_rx_descriptor),
2186 PAGE_SIZE);
2187 dma_ptr = 0;
2188 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev,
2189 ring_allocation_size, &dma_ptr);
2190 if (!cpu_ptr) {
2191 ret = -ENOMEM;
2192 goto cleanup;
2193 }
2194 rx->ring_allocation_size = ring_allocation_size;
2195 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr;
2196 rx->ring_dma_ptr = dma_ptr;
2197
2198 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info),
2199 GFP_KERNEL);
2200 if (!cpu_ptr) {
2201 ret = -ENOMEM;
2202 goto cleanup;
2203 }
2204 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr;
2205 dma_ptr = 0;
2206 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev,
2207 sizeof(*rx->head_cpu_ptr), &dma_ptr);
2208 if (!cpu_ptr) {
2209 ret = -ENOMEM;
2210 goto cleanup;
2211 }
2212
2213 rx->head_cpu_ptr = cpu_ptr;
2214 rx->head_dma_ptr = dma_ptr;
2215 if (rx->head_dma_ptr & 0x3) {
2216 ret = -ENOMEM;
2217 goto cleanup;
2218 }
2219
2220 rx->last_head = 0;
2221 for (index = 0; index < rx->ring_size; index++) {
2222 ret = lan743x_rx_allocate_ring_element(rx, index);
2223 if (ret)
2224 goto cleanup;
2225 }
2226 return 0;
2227
2228cleanup:
2229 lan743x_rx_ring_cleanup(rx);
2230 return ret;
2231}
2232
2233static void lan743x_rx_close(struct lan743x_rx *rx)
2234{
2235 struct lan743x_adapter *adapter = rx->adapter;
2236
2237 lan743x_csr_write(adapter, FCT_RX_CTL,
2238 FCT_RX_CTL_DIS_(rx->channel_number));
2239 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2240 FCT_RX_CTL_EN_(rx->channel_number),
2241 0, 1000, 20000, 100);
2242
2243 lan743x_csr_write(adapter, DMAC_CMD,
2244 DMAC_CMD_STOP_R_(rx->channel_number));
2245 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number);
2246
2247 lan743x_csr_write(adapter, DMAC_INT_EN_CLR,
2248 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2249 lan743x_csr_write(adapter, INT_EN_CLR,
2250 INT_BIT_DMA_RX_(rx->channel_number));
2251 napi_disable(&rx->napi);
2252
2253 netif_napi_del(&rx->napi);
2254
2255 lan743x_rx_ring_cleanup(rx);
2256}
2257
2258static int lan743x_rx_open(struct lan743x_rx *rx)
2259{
2260 struct lan743x_adapter *adapter = rx->adapter;
2261 u32 data = 0;
2262 int ret;
2263
2264 rx->frame_count = 0;
2265 ret = lan743x_rx_ring_init(rx);
2266 if (ret)
2267 goto return_error;
2268
2269 netif_napi_add(adapter->netdev,
2270 &rx->napi, lan743x_rx_napi_poll,
2271 rx->ring_size - 1);
2272
2273 lan743x_csr_write(adapter, DMAC_CMD,
2274 DMAC_CMD_RX_SWR_(rx->channel_number));
2275 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
2276 DMAC_CMD_RX_SWR_(rx->channel_number),
2277 0, 1000, 20000, 100);
2278
2279
2280 lan743x_csr_write(adapter,
2281 RX_BASE_ADDRH(rx->channel_number),
2282 DMA_ADDR_HIGH32(rx->ring_dma_ptr));
2283 lan743x_csr_write(adapter,
2284 RX_BASE_ADDRL(rx->channel_number),
2285 DMA_ADDR_LOW32(rx->ring_dma_ptr));
2286
2287
2288 lan743x_csr_write(adapter,
2289 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number),
2290 DMA_ADDR_HIGH32(rx->head_dma_ptr));
2291 lan743x_csr_write(adapter,
2292 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number),
2293 DMA_ADDR_LOW32(rx->head_dma_ptr));
2294 data = RX_CFG_A_RX_HP_WB_EN_;
2295 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
2296 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ |
2297 RX_CFG_A_RX_WB_THRES_SET_(0x7) |
2298 RX_CFG_A_RX_PF_THRES_SET_(16) |
2299 RX_CFG_A_RX_PF_PRI_THRES_SET_(4));
2300 }
2301
2302
2303 lan743x_csr_write(adapter,
2304 RX_CFG_A(rx->channel_number), data);
2305
2306
2307 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number));
2308 data &= ~RX_CFG_B_RX_PAD_MASK_;
2309 if (!RX_HEAD_PADDING)
2310 data |= RX_CFG_B_RX_PAD_0_;
2311 else
2312 data |= RX_CFG_B_RX_PAD_2_;
2313 data &= ~RX_CFG_B_RX_RING_LEN_MASK_;
2314 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_);
2315 data |= RX_CFG_B_TS_ALL_RX_;
2316 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
2317 data |= RX_CFG_B_RDMABL_512_;
2318
2319 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data);
2320 rx->vector_flags = lan743x_intr_get_vector_flags(adapter,
2321 INT_BIT_DMA_RX_
2322 (rx->channel_number));
2323
2324
2325 data = 0;
2326 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
2327 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_;
2328 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
2329 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_;
2330 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
2331 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_;
2332 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
2333 data |= RX_CFG_C_RX_INT_EN_R2C_;
2334 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data);
2335
2336 rx->last_tail = ((u32)(rx->ring_size - 1));
2337 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2338 rx->last_tail);
2339 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number));
2340 if (rx->last_head) {
2341 ret = -EIO;
2342 goto napi_delete;
2343 }
2344
2345 napi_enable(&rx->napi);
2346
2347 lan743x_csr_write(adapter, INT_EN_SET,
2348 INT_BIT_DMA_RX_(rx->channel_number));
2349 lan743x_csr_write(adapter, DMAC_INT_STS,
2350 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2351 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
2352 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2353 lan743x_csr_write(adapter, DMAC_CMD,
2354 DMAC_CMD_START_R_(rx->channel_number));
2355
2356
2357 lan743x_csr_write(adapter, FCT_RX_CTL,
2358 FCT_RX_CTL_RESET_(rx->channel_number));
2359 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2360 FCT_RX_CTL_RESET_(rx->channel_number),
2361 0, 1000, 20000, 100);
2362 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number),
2363 FCT_FLOW_CTL_REQ_EN_ |
2364 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) |
2365 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA));
2366
2367
2368 lan743x_csr_write(adapter, FCT_RX_CTL,
2369 FCT_RX_CTL_EN_(rx->channel_number));
2370 return 0;
2371
2372napi_delete:
2373 netif_napi_del(&rx->napi);
2374 lan743x_rx_ring_cleanup(rx);
2375
2376return_error:
2377 return ret;
2378}
2379
2380static int lan743x_netdev_close(struct net_device *netdev)
2381{
2382 struct lan743x_adapter *adapter = netdev_priv(netdev);
2383 int index;
2384
2385 lan743x_tx_close(&adapter->tx[0]);
2386
2387 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++)
2388 lan743x_rx_close(&adapter->rx[index]);
2389
2390 lan743x_phy_close(adapter);
2391
2392 lan743x_mac_close(adapter);
2393
2394 lan743x_intr_close(adapter);
2395
2396 return 0;
2397}
2398
2399static int lan743x_netdev_open(struct net_device *netdev)
2400{
2401 struct lan743x_adapter *adapter = netdev_priv(netdev);
2402 int index;
2403 int ret;
2404
2405 ret = lan743x_intr_open(adapter);
2406 if (ret)
2407 goto return_error;
2408
2409 ret = lan743x_mac_open(adapter);
2410 if (ret)
2411 goto close_intr;
2412
2413 ret = lan743x_phy_open(adapter);
2414 if (ret)
2415 goto close_mac;
2416
2417 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2418 ret = lan743x_rx_open(&adapter->rx[index]);
2419 if (ret)
2420 goto close_rx;
2421 }
2422
2423 ret = lan743x_tx_open(&adapter->tx[0]);
2424 if (ret)
2425 goto close_rx;
2426
2427 return 0;
2428
2429close_rx:
2430 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2431 if (adapter->rx[index].ring_cpu_ptr)
2432 lan743x_rx_close(&adapter->rx[index]);
2433 }
2434 lan743x_phy_close(adapter);
2435
2436close_mac:
2437 lan743x_mac_close(adapter);
2438
2439close_intr:
2440 lan743x_intr_close(adapter);
2441
2442return_error:
2443 netif_warn(adapter, ifup, adapter->netdev,
2444 "Error opening LAN743x\n");
2445 return ret;
2446}
2447
2448static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb,
2449 struct net_device *netdev)
2450{
2451 struct lan743x_adapter *adapter = netdev_priv(netdev);
2452
2453 return lan743x_tx_xmit_frame(&adapter->tx[0], skb);
2454}
2455
2456static int lan743x_netdev_ioctl(struct net_device *netdev,
2457 struct ifreq *ifr, int cmd)
2458{
2459 if (!netif_running(netdev))
2460 return -EINVAL;
2461 return phy_mii_ioctl(netdev->phydev, ifr, cmd);
2462}
2463
2464static void lan743x_netdev_set_multicast(struct net_device *netdev)
2465{
2466 struct lan743x_adapter *adapter = netdev_priv(netdev);
2467
2468 lan743x_rfe_set_multicast(adapter);
2469}
2470
2471static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu)
2472{
2473 struct lan743x_adapter *adapter = netdev_priv(netdev);
2474 int ret = 0;
2475
2476 ret = lan743x_mac_set_mtu(adapter, new_mtu);
2477 if (!ret)
2478 netdev->mtu = new_mtu;
2479 return ret;
2480}
2481
2482static void lan743x_netdev_get_stats64(struct net_device *netdev,
2483 struct rtnl_link_stats64 *stats)
2484{
2485 struct lan743x_adapter *adapter = netdev_priv(netdev);
2486
2487 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES);
2488 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES);
2489 stats->rx_bytes = lan743x_csr_read(adapter,
2490 STAT_RX_UNICAST_BYTE_COUNT) +
2491 lan743x_csr_read(adapter,
2492 STAT_RX_BROADCAST_BYTE_COUNT) +
2493 lan743x_csr_read(adapter,
2494 STAT_RX_MULTICAST_BYTE_COUNT);
2495 stats->tx_bytes = lan743x_csr_read(adapter,
2496 STAT_TX_UNICAST_BYTE_COUNT) +
2497 lan743x_csr_read(adapter,
2498 STAT_TX_BROADCAST_BYTE_COUNT) +
2499 lan743x_csr_read(adapter,
2500 STAT_TX_MULTICAST_BYTE_COUNT);
2501 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) +
2502 lan743x_csr_read(adapter,
2503 STAT_RX_ALIGNMENT_ERRORS) +
2504 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) +
2505 lan743x_csr_read(adapter,
2506 STAT_RX_UNDERSIZE_FRAME_ERRORS) +
2507 lan743x_csr_read(adapter,
2508 STAT_RX_OVERSIZE_FRAME_ERRORS);
2509 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) +
2510 lan743x_csr_read(adapter,
2511 STAT_TX_EXCESS_DEFERRAL_ERRORS) +
2512 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS);
2513 stats->rx_dropped = lan743x_csr_read(adapter,
2514 STAT_RX_DROPPED_FRAMES);
2515 stats->tx_dropped = lan743x_csr_read(adapter,
2516 STAT_TX_EXCESSIVE_COLLISION);
2517 stats->multicast = lan743x_csr_read(adapter,
2518 STAT_RX_MULTICAST_FRAMES) +
2519 lan743x_csr_read(adapter,
2520 STAT_TX_MULTICAST_FRAMES);
2521 stats->collisions = lan743x_csr_read(adapter,
2522 STAT_TX_SINGLE_COLLISIONS) +
2523 lan743x_csr_read(adapter,
2524 STAT_TX_MULTIPLE_COLLISIONS) +
2525 lan743x_csr_read(adapter,
2526 STAT_TX_LATE_COLLISIONS);
2527}
2528
2529static int lan743x_netdev_set_mac_address(struct net_device *netdev,
2530 void *addr)
2531{
2532 struct lan743x_adapter *adapter = netdev_priv(netdev);
2533 struct sockaddr *sock_addr = addr;
2534 int ret;
2535
2536 ret = eth_prepare_mac_addr_change(netdev, sock_addr);
2537 if (ret)
2538 return ret;
2539 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data);
2540 lan743x_mac_set_address(adapter, sock_addr->sa_data);
2541 lan743x_rfe_update_mac_address(adapter);
2542 return 0;
2543}
2544
2545static const struct net_device_ops lan743x_netdev_ops = {
2546 .ndo_open = lan743x_netdev_open,
2547 .ndo_stop = lan743x_netdev_close,
2548 .ndo_start_xmit = lan743x_netdev_xmit_frame,
2549 .ndo_do_ioctl = lan743x_netdev_ioctl,
2550 .ndo_set_rx_mode = lan743x_netdev_set_multicast,
2551 .ndo_change_mtu = lan743x_netdev_change_mtu,
2552 .ndo_get_stats64 = lan743x_netdev_get_stats64,
2553 .ndo_set_mac_address = lan743x_netdev_set_mac_address,
2554};
2555
2556static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter)
2557{
2558 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
2559}
2560
2561static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter)
2562{
2563 mdiobus_unregister(adapter->mdiobus);
2564}
2565
2566static void lan743x_full_cleanup(struct lan743x_adapter *adapter)
2567{
2568 unregister_netdev(adapter->netdev);
2569
2570 lan743x_mdiobus_cleanup(adapter);
2571 lan743x_hardware_cleanup(adapter);
2572 lan743x_pci_cleanup(adapter);
2573}
2574
2575static int lan743x_hardware_init(struct lan743x_adapter *adapter,
2576 struct pci_dev *pdev)
2577{
2578 struct lan743x_tx *tx;
2579 int index;
2580 int ret;
2581
2582 adapter->intr.irq = adapter->pdev->irq;
2583 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
2584 mutex_init(&adapter->dp_lock);
2585 ret = lan743x_mac_init(adapter);
2586 if (ret)
2587 return ret;
2588
2589 ret = lan743x_phy_init(adapter);
2590 if (ret)
2591 return ret;
2592
2593 lan743x_rfe_update_mac_address(adapter);
2594
2595 ret = lan743x_dmac_init(adapter);
2596 if (ret)
2597 return ret;
2598
2599 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2600 adapter->rx[index].adapter = adapter;
2601 adapter->rx[index].channel_number = index;
2602 }
2603
2604 tx = &adapter->tx[0];
2605 tx->adapter = adapter;
2606 tx->channel_number = 0;
2607 spin_lock_init(&tx->ring_lock);
2608 return 0;
2609}
2610
2611static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
2612{
2613 int ret;
2614
2615 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev);
2616 if (!(adapter->mdiobus)) {
2617 ret = -ENOMEM;
2618 goto return_error;
2619 }
2620
2621 adapter->mdiobus->priv = (void *)adapter;
2622 adapter->mdiobus->read = lan743x_mdiobus_read;
2623 adapter->mdiobus->write = lan743x_mdiobus_write;
2624 adapter->mdiobus->name = "lan743x-mdiobus";
2625 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE,
2626 "pci-%s", pci_name(adapter->pdev));
2627
2628
2629 adapter->mdiobus->phy_mask = ~(u32)BIT(1);
2630
2631
2632 ret = mdiobus_register(adapter->mdiobus);
2633 if (ret < 0)
2634 goto return_error;
2635 return 0;
2636
2637return_error:
2638 return ret;
2639}
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651static int lan743x_pcidev_probe(struct pci_dev *pdev,
2652 const struct pci_device_id *id)
2653{
2654 struct lan743x_adapter *adapter = NULL;
2655 struct net_device *netdev = NULL;
2656 int ret = -ENODEV;
2657
2658 netdev = devm_alloc_etherdev(&pdev->dev,
2659 sizeof(struct lan743x_adapter));
2660 if (!netdev)
2661 goto return_error;
2662
2663 SET_NETDEV_DEV(netdev, &pdev->dev);
2664 pci_set_drvdata(pdev, netdev);
2665 adapter = netdev_priv(netdev);
2666 adapter->netdev = netdev;
2667 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE |
2668 NETIF_MSG_LINK | NETIF_MSG_IFUP |
2669 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED;
2670 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
2671
2672 ret = lan743x_pci_init(adapter, pdev);
2673 if (ret)
2674 goto return_error;
2675
2676 ret = lan743x_csr_init(adapter);
2677 if (ret)
2678 goto cleanup_pci;
2679
2680 ret = lan743x_hardware_init(adapter, pdev);
2681 if (ret)
2682 goto cleanup_pci;
2683
2684 ret = lan743x_mdiobus_init(adapter);
2685 if (ret)
2686 goto cleanup_hardware;
2687
2688 adapter->netdev->netdev_ops = &lan743x_netdev_ops;
2689 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2690 adapter->netdev->hw_features = adapter->netdev->features;
2691
2692
2693 netif_carrier_off(netdev);
2694
2695 ret = register_netdev(adapter->netdev);
2696 if (ret < 0)
2697 goto cleanup_mdiobus;
2698 return 0;
2699
2700cleanup_mdiobus:
2701 lan743x_mdiobus_cleanup(adapter);
2702
2703cleanup_hardware:
2704 lan743x_hardware_cleanup(adapter);
2705
2706cleanup_pci:
2707 lan743x_pci_cleanup(adapter);
2708
2709return_error:
2710 pr_warn("Initialization failed\n");
2711 return ret;
2712}
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723static void lan743x_pcidev_remove(struct pci_dev *pdev)
2724{
2725 struct net_device *netdev = pci_get_drvdata(pdev);
2726 struct lan743x_adapter *adapter = netdev_priv(netdev);
2727
2728 lan743x_full_cleanup(adapter);
2729}
2730
2731static void lan743x_pcidev_shutdown(struct pci_dev *pdev)
2732{
2733 struct net_device *netdev = pci_get_drvdata(pdev);
2734 struct lan743x_adapter *adapter = netdev_priv(netdev);
2735
2736 rtnl_lock();
2737 netif_device_detach(netdev);
2738
2739
2740
2741
2742
2743 if (netif_running(netdev))
2744 lan743x_netdev_close(netdev);
2745 rtnl_unlock();
2746
2747
2748 lan743x_hardware_cleanup(adapter);
2749}
2750
2751static const struct pci_device_id lan743x_pcidev_tbl[] = {
2752 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) },
2753 { 0, }
2754};
2755
2756static struct pci_driver lan743x_pcidev_driver = {
2757 .name = DRIVER_NAME,
2758 .id_table = lan743x_pcidev_tbl,
2759 .probe = lan743x_pcidev_probe,
2760 .remove = lan743x_pcidev_remove,
2761 .shutdown = lan743x_pcidev_shutdown,
2762};
2763
2764module_pci_driver(lan743x_pcidev_driver);
2765
2766MODULE_AUTHOR(DRIVER_AUTHOR);
2767MODULE_DESCRIPTION(DRIVER_DESC);
2768MODULE_LICENSE("GPL");
2769
