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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/of_mdio.h>
12#include <linux/of_net.h>
13#include <linux/phy.h>
14#include <linux/phy_fixed.h>
15#include <linux/rtnetlink.h>
16#include <linux/iopoll.h>
17#include <linux/crc16.h>
18#include <linux/phylink.h>
19#include "lan743x_main.h"
20#include "lan743x_ethtool.h"
21
22#define MMD_ACCESS_ADDRESS 0
23#define MMD_ACCESS_WRITE 1
24#define MMD_ACCESS_READ 2
25#define MMD_ACCESS_READ_INC 3
26#define PCS_POWER_STATE_DOWN 0x6
27#define PCS_POWER_STATE_UP 0x4
28
29#define RFE_RD_FIFO_TH_3_DWORDS 0x3
30
31static void pci11x1x_strap_get_status(struct lan743x_adapter *adapter)
32{
33 u32 chip_rev;
34 u32 cfg_load;
35 u32 hw_cfg;
36 u32 strap;
37 int ret;
38
39 /* Timeout = 100 (i.e. 1 sec (10 msce * 100)) */
40 ret = lan743x_hs_syslock_acquire(adapter, 100);
41 if (ret < 0) {
42 netif_err(adapter, drv, adapter->netdev,
43 "Sys Lock acquire failed ret:%d\n", ret);
44 return;
45 }
46
47 cfg_load = lan743x_csr_read(adapter, ETH_SYS_CONFIG_LOAD_STARTED_REG);
48 lan743x_hs_syslock_release(adapter);
49 hw_cfg = lan743x_csr_read(adapter, HW_CFG);
50
51 if (cfg_load & GEN_SYS_LOAD_STARTED_REG_ETH_ ||
52 hw_cfg & HW_CFG_RST_PROTECT_) {
53 strap = lan743x_csr_read(adapter, STRAP_READ);
54 if (strap & STRAP_READ_SGMII_EN_)
55 adapter->is_sgmii_en = true;
56 else
57 adapter->is_sgmii_en = false;
58 } else {
59 chip_rev = lan743x_csr_read(adapter, FPGA_REV);
60 if (chip_rev) {
61 if (chip_rev & FPGA_SGMII_OP)
62 adapter->is_sgmii_en = true;
63 else
64 adapter->is_sgmii_en = false;
65 } else {
66 adapter->is_sgmii_en = false;
67 }
68 }
69 netif_dbg(adapter, drv, adapter->netdev,
70 "SGMII I/F %sable\n", adapter->is_sgmii_en ? "En" : "Dis");
71}
72
73static bool is_pci11x1x_chip(struct lan743x_adapter *adapter)
74{
75 struct lan743x_csr *csr = &adapter->csr;
76 u32 id_rev = csr->id_rev;
77
78 if (((id_rev & 0xFFFF0000) == ID_REV_ID_A011_) ||
79 ((id_rev & 0xFFFF0000) == ID_REV_ID_A041_)) {
80 return true;
81 }
82 return false;
83}
84
85static void lan743x_pci_cleanup(struct lan743x_adapter *adapter)
86{
87 pci_release_selected_regions(adapter->pdev,
88 pci_select_bars(adapter->pdev,
89 IORESOURCE_MEM));
90 pci_disable_device(adapter->pdev);
91}
92
93static int lan743x_pci_init(struct lan743x_adapter *adapter,
94 struct pci_dev *pdev)
95{
96 unsigned long bars = 0;
97 int ret;
98
99 adapter->pdev = pdev;
100 ret = pci_enable_device_mem(pdev);
101 if (ret)
102 goto return_error;
103
104 netif_info(adapter, probe, adapter->netdev,
105 "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n",
106 pdev->vendor, pdev->device);
107 bars = pci_select_bars(pdev, IORESOURCE_MEM);
108 if (!test_bit(0, &bars))
109 goto disable_device;
110
111 ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME);
112 if (ret)
113 goto disable_device;
114
115 pci_set_master(pdev);
116 return 0;
117
118disable_device:
119 pci_disable_device(adapter->pdev);
120
121return_error:
122 return ret;
123}
124
125u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset)
126{
127 return ioread32(&adapter->csr.csr_address[offset]);
128}
129
130void lan743x_csr_write(struct lan743x_adapter *adapter, int offset,
131 u32 data)
132{
133 iowrite32(data, &adapter->csr.csr_address[offset]);
134}
135
136#define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset)
137
138static int lan743x_csr_light_reset(struct lan743x_adapter *adapter)
139{
140 u32 data;
141
142 data = lan743x_csr_read(adapter, HW_CFG);
143 data |= HW_CFG_LRST_;
144 lan743x_csr_write(adapter, HW_CFG, data);
145
146 return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data,
147 !(data & HW_CFG_LRST_), 100000, 10000000);
148}
149
150static int lan743x_csr_wait_for_bit_atomic(struct lan743x_adapter *adapter,
151 int offset, u32 bit_mask,
152 int target_value, int udelay_min,
153 int udelay_max, int count)
154{
155 u32 data;
156
157 return readx_poll_timeout_atomic(LAN743X_CSR_READ_OP, offset, data,
158 target_value == !!(data & bit_mask),
159 udelay_max, udelay_min * count);
160}
161
162static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter,
163 int offset, u32 bit_mask,
164 int target_value, int usleep_min,
165 int usleep_max, int count)
166{
167 u32 data;
168
169 return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data,
170 target_value == !!(data & bit_mask),
171 usleep_max, usleep_min * count);
172}
173
174static int lan743x_csr_init(struct lan743x_adapter *adapter)
175{
176 struct lan743x_csr *csr = &adapter->csr;
177 resource_size_t bar_start, bar_length;
178
179 bar_start = pci_resource_start(adapter->pdev, 0);
180 bar_length = pci_resource_len(adapter->pdev, 0);
181 csr->csr_address = devm_ioremap(&adapter->pdev->dev,
182 bar_start, bar_length);
183 if (!csr->csr_address)
184 return -ENOMEM;
185
186 csr->id_rev = lan743x_csr_read(adapter, ID_REV);
187 csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
188 netif_info(adapter, probe, adapter->netdev,
189 "ID_REV = 0x%08X, FPGA_REV = %d.%d\n",
190 csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev),
191 FPGA_REV_GET_MINOR_(csr->fpga_rev));
192 if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev))
193 return -ENODEV;
194
195 csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
196 switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) {
197 case ID_REV_CHIP_REV_A0_:
198 csr->flags |= LAN743X_CSR_FLAG_IS_A0;
199 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
200 break;
201 case ID_REV_CHIP_REV_B0_:
202 csr->flags |= LAN743X_CSR_FLAG_IS_B0;
203 break;
204 }
205
206 return lan743x_csr_light_reset(adapter);
207}
208
209static void lan743x_intr_software_isr(struct lan743x_adapter *adapter)
210{
211 struct lan743x_intr *intr = &adapter->intr;
212
213 /* disable the interrupt to prevent repeated re-triggering */
214 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
215 intr->software_isr_flag = true;
216 wake_up(&intr->software_isr_wq);
217}
218
219static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags)
220{
221 struct lan743x_tx *tx = context;
222 struct lan743x_adapter *adapter = tx->adapter;
223 bool enable_flag = true;
224
225 lan743x_csr_read(adapter, INT_EN_SET);
226 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
227 lan743x_csr_write(adapter, INT_EN_CLR,
228 INT_BIT_DMA_TX_(tx->channel_number));
229 }
230
231 if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) {
232 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
233 u32 dmac_int_sts;
234 u32 dmac_int_en;
235
236 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
237 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
238 else
239 dmac_int_sts = ioc_bit;
240 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
241 dmac_int_en = lan743x_csr_read(adapter,
242 DMAC_INT_EN_SET);
243 else
244 dmac_int_en = ioc_bit;
245
246 dmac_int_en &= ioc_bit;
247 dmac_int_sts &= dmac_int_en;
248 if (dmac_int_sts & ioc_bit) {
249 napi_schedule(&tx->napi);
250 enable_flag = false;/* poll func will enable later */
251 }
252 }
253
254 if (enable_flag)
255 /* enable isr */
256 lan743x_csr_write(adapter, INT_EN_SET,
257 INT_BIT_DMA_TX_(tx->channel_number));
258}
259
260static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags)
261{
262 struct lan743x_rx *rx = context;
263 struct lan743x_adapter *adapter = rx->adapter;
264 bool enable_flag = true;
265
266 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
267 lan743x_csr_write(adapter, INT_EN_CLR,
268 INT_BIT_DMA_RX_(rx->channel_number));
269 }
270
271 if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) {
272 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number);
273 u32 dmac_int_sts;
274 u32 dmac_int_en;
275
276 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
277 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
278 else
279 dmac_int_sts = rx_frame_bit;
280 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
281 dmac_int_en = lan743x_csr_read(adapter,
282 DMAC_INT_EN_SET);
283 else
284 dmac_int_en = rx_frame_bit;
285
286 dmac_int_en &= rx_frame_bit;
287 dmac_int_sts &= dmac_int_en;
288 if (dmac_int_sts & rx_frame_bit) {
289 napi_schedule(&rx->napi);
290 enable_flag = false;/* poll funct will enable later */
291 }
292 }
293
294 if (enable_flag) {
295 /* enable isr */
296 lan743x_csr_write(adapter, INT_EN_SET,
297 INT_BIT_DMA_RX_(rx->channel_number));
298 }
299}
300
301static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
302{
303 struct lan743x_adapter *adapter = context;
304 unsigned int channel;
305
306 if (int_sts & INT_BIT_ALL_RX_) {
307 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS;
308 channel++) {
309 u32 int_bit = INT_BIT_DMA_RX_(channel);
310
311 if (int_sts & int_bit) {
312 lan743x_rx_isr(&adapter->rx[channel],
313 int_bit, flags);
314 int_sts &= ~int_bit;
315 }
316 }
317 }
318 if (int_sts & INT_BIT_ALL_TX_) {
319 for (channel = 0; channel < adapter->used_tx_channels;
320 channel++) {
321 u32 int_bit = INT_BIT_DMA_TX_(channel);
322
323 if (int_sts & int_bit) {
324 lan743x_tx_isr(&adapter->tx[channel],
325 int_bit, flags);
326 int_sts &= ~int_bit;
327 }
328 }
329 }
330 if (int_sts & INT_BIT_ALL_OTHER_) {
331 if (int_sts & INT_BIT_SW_GP_) {
332 lan743x_intr_software_isr(adapter);
333 int_sts &= ~INT_BIT_SW_GP_;
334 }
335 if (int_sts & INT_BIT_1588_) {
336 lan743x_ptp_isr(adapter);
337 int_sts &= ~INT_BIT_1588_;
338 }
339 }
340 if (int_sts)
341 lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
342}
343
344static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr)
345{
346 struct lan743x_vector *vector = ptr;
347 struct lan743x_adapter *adapter = vector->adapter;
348 irqreturn_t result = IRQ_NONE;
349 u32 int_enables;
350 u32 int_sts;
351
352 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) {
353 int_sts = lan743x_csr_read(adapter, INT_STS);
354 } else if (vector->flags &
355 (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C |
356 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) {
357 int_sts = lan743x_csr_read(adapter, INT_STS_R2C);
358 } else {
359 /* use mask as implied status */
360 int_sts = vector->int_mask | INT_BIT_MAS_;
361 }
362
363 if (!(int_sts & INT_BIT_MAS_))
364 goto irq_done;
365
366 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR)
367 /* disable vector interrupt */
368 lan743x_csr_write(adapter,
369 INT_VEC_EN_CLR,
370 INT_VEC_EN_(vector->vector_index));
371
372 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR)
373 /* disable master interrupt */
374 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
375
376 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) {
377 int_enables = lan743x_csr_read(adapter, INT_EN_SET);
378 } else {
379 /* use vector mask as implied enable mask */
380 int_enables = vector->int_mask;
381 }
382
383 int_sts &= int_enables;
384 int_sts &= vector->int_mask;
385 if (int_sts) {
386 if (vector->handler) {
387 vector->handler(vector->context,
388 int_sts, vector->flags);
389 } else {
390 /* disable interrupts on this vector */
391 lan743x_csr_write(adapter, INT_EN_CLR,
392 vector->int_mask);
393 }
394 result = IRQ_HANDLED;
395 }
396
397 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET)
398 /* enable master interrupt */
399 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
400
401 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET)
402 /* enable vector interrupt */
403 lan743x_csr_write(adapter,
404 INT_VEC_EN_SET,
405 INT_VEC_EN_(vector->vector_index));
406irq_done:
407 return result;
408}
409
410static int lan743x_intr_test_isr(struct lan743x_adapter *adapter)
411{
412 struct lan743x_intr *intr = &adapter->intr;
413 int ret;
414
415 intr->software_isr_flag = false;
416
417 /* enable and activate test interrupt */
418 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_);
419 lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_);
420
421 ret = wait_event_timeout(intr->software_isr_wq,
422 intr->software_isr_flag,
423 msecs_to_jiffies(200));
424
425 /* disable test interrupt */
426 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
427
428 return ret > 0 ? 0 : -ENODEV;
429}
430
431static int lan743x_intr_register_isr(struct lan743x_adapter *adapter,
432 int vector_index, u32 flags,
433 u32 int_mask,
434 lan743x_vector_handler handler,
435 void *context)
436{
437 struct lan743x_vector *vector = &adapter->intr.vector_list
438 [vector_index];
439 int ret;
440
441 vector->adapter = adapter;
442 vector->flags = flags;
443 vector->vector_index = vector_index;
444 vector->int_mask = int_mask;
445 vector->handler = handler;
446 vector->context = context;
447
448 ret = request_irq(vector->irq,
449 lan743x_intr_entry_isr,
450 (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ?
451 IRQF_SHARED : 0, DRIVER_NAME, vector);
452 if (ret) {
453 vector->handler = NULL;
454 vector->context = NULL;
455 vector->int_mask = 0;
456 vector->flags = 0;
457 }
458 return ret;
459}
460
461static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter,
462 int vector_index)
463{
464 struct lan743x_vector *vector = &adapter->intr.vector_list
465 [vector_index];
466
467 free_irq(vector->irq, vector);
468 vector->handler = NULL;
469 vector->context = NULL;
470 vector->int_mask = 0;
471 vector->flags = 0;
472}
473
474static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter,
475 u32 int_mask)
476{
477 int index;
478
479 for (index = 0; index < adapter->max_vector_count; index++) {
480 if (adapter->intr.vector_list[index].int_mask & int_mask)
481 return adapter->intr.vector_list[index].flags;
482 }
483 return 0;
484}
485
486static void lan743x_intr_close(struct lan743x_adapter *adapter)
487{
488 struct lan743x_intr *intr = &adapter->intr;
489 int index = 0;
490
491 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
492 if (adapter->is_pci11x1x)
493 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x0000FFFF);
494 else
495 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF);
496
497 for (index = 0; index < intr->number_of_vectors; index++) {
498 if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) {
499 lan743x_intr_unregister_isr(adapter, index);
500 intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index);
501 }
502 }
503
504 if (intr->flags & INTR_FLAG_MSI_ENABLED) {
505 pci_disable_msi(adapter->pdev);
506 intr->flags &= ~INTR_FLAG_MSI_ENABLED;
507 }
508
509 if (intr->flags & INTR_FLAG_MSIX_ENABLED) {
510 pci_disable_msix(adapter->pdev);
511 intr->flags &= ~INTR_FLAG_MSIX_ENABLED;
512 }
513}
514
515static int lan743x_intr_open(struct lan743x_adapter *adapter)
516{
517 struct msix_entry msix_entries[PCI11X1X_MAX_VECTOR_COUNT];
518 struct lan743x_intr *intr = &adapter->intr;
519 unsigned int used_tx_channels;
520 u32 int_vec_en_auto_clr = 0;
521 u8 max_vector_count;
522 u32 int_vec_map0 = 0;
523 u32 int_vec_map1 = 0;
524 int ret = -ENODEV;
525 int index = 0;
526 u32 flags = 0;
527
528 intr->number_of_vectors = 0;
529
530 /* Try to set up MSIX interrupts */
531 max_vector_count = adapter->max_vector_count;
532 memset(&msix_entries[0], 0,
533 sizeof(struct msix_entry) * max_vector_count);
534 for (index = 0; index < max_vector_count; index++)
535 msix_entries[index].entry = index;
536 used_tx_channels = adapter->used_tx_channels;
537 ret = pci_enable_msix_range(adapter->pdev,
538 msix_entries, 1,
539 1 + used_tx_channels +
540 LAN743X_USED_RX_CHANNELS);
541
542 if (ret > 0) {
543 intr->flags |= INTR_FLAG_MSIX_ENABLED;
544 intr->number_of_vectors = ret;
545 intr->using_vectors = true;
546 for (index = 0; index < intr->number_of_vectors; index++)
547 intr->vector_list[index].irq = msix_entries
548 [index].vector;
549 netif_info(adapter, ifup, adapter->netdev,
550 "using MSIX interrupts, number of vectors = %d\n",
551 intr->number_of_vectors);
552 }
553
554 /* If MSIX failed try to setup using MSI interrupts */
555 if (!intr->number_of_vectors) {
556 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
557 if (!pci_enable_msi(adapter->pdev)) {
558 intr->flags |= INTR_FLAG_MSI_ENABLED;
559 intr->number_of_vectors = 1;
560 intr->using_vectors = true;
561 intr->vector_list[0].irq =
562 adapter->pdev->irq;
563 netif_info(adapter, ifup, adapter->netdev,
564 "using MSI interrupts, number of vectors = %d\n",
565 intr->number_of_vectors);
566 }
567 }
568 }
569
570 /* If MSIX, and MSI failed, setup using legacy interrupt */
571 if (!intr->number_of_vectors) {
572 intr->number_of_vectors = 1;
573 intr->using_vectors = false;
574 intr->vector_list[0].irq = intr->irq;
575 netif_info(adapter, ifup, adapter->netdev,
576 "using legacy interrupts\n");
577 }
578
579 /* At this point we must have at least one irq */
580 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF);
581
582 /* map all interrupts to vector 0 */
583 lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000);
584 lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000);
585 lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000);
586 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
587 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
588 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
589 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
590
591 if (intr->using_vectors) {
592 flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
593 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
594 } else {
595 flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR |
596 LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET |
597 LAN743X_VECTOR_FLAG_IRQ_SHARED;
598 }
599
600 if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
601 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ;
602 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C;
603 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
604 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK;
605 flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C;
606 flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C;
607 }
608
609 init_waitqueue_head(&intr->software_isr_wq);
610
611 ret = lan743x_intr_register_isr(adapter, 0, flags,
612 INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ |
613 INT_BIT_ALL_OTHER_,
614 lan743x_intr_shared_isr, adapter);
615 if (ret)
616 goto clean_up;
617 intr->flags |= INTR_FLAG_IRQ_REQUESTED(0);
618
619 if (intr->using_vectors)
620 lan743x_csr_write(adapter, INT_VEC_EN_SET,
621 INT_VEC_EN_(0));
622
623 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
624 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD);
625 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD);
626 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD);
627 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD);
628 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD);
629 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD);
630 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD);
631 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD);
632 if (adapter->is_pci11x1x) {
633 lan743x_csr_write(adapter, INT_MOD_CFG8, LAN743X_INT_MOD);
634 lan743x_csr_write(adapter, INT_MOD_CFG9, LAN743X_INT_MOD);
635 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00007654);
636 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00003210);
637 } else {
638 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432);
639 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001);
640 }
641 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF);
642 }
643
644 /* enable interrupts */
645 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
646 ret = lan743x_intr_test_isr(adapter);
647 if (ret)
648 goto clean_up;
649
650 if (intr->number_of_vectors > 1) {
651 int number_of_tx_vectors = intr->number_of_vectors - 1;
652
653 if (number_of_tx_vectors > used_tx_channels)
654 number_of_tx_vectors = used_tx_channels;
655 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
656 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
657 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
658 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
659 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
660 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
661
662 if (adapter->csr.flags &
663 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
664 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
665 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
666 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
667 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
668 }
669
670 for (index = 0; index < number_of_tx_vectors; index++) {
671 u32 int_bit = INT_BIT_DMA_TX_(index);
672 int vector = index + 1;
673
674 /* map TX interrupt to vector */
675 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector);
676 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1);
677
678 /* Remove TX interrupt from shared mask */
679 intr->vector_list[0].int_mask &= ~int_bit;
680 ret = lan743x_intr_register_isr(adapter, vector, flags,
681 int_bit, lan743x_tx_isr,
682 &adapter->tx[index]);
683 if (ret)
684 goto clean_up;
685 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
686 if (!(flags &
687 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET))
688 lan743x_csr_write(adapter, INT_VEC_EN_SET,
689 INT_VEC_EN_(vector));
690 }
691 }
692 if ((intr->number_of_vectors - used_tx_channels) > 1) {
693 int number_of_rx_vectors = intr->number_of_vectors -
694 used_tx_channels - 1;
695
696 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS)
697 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS;
698
699 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
700 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
701 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
702 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
703 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
704 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
705
706 if (adapter->csr.flags &
707 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
708 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
709 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
710 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
711 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
712 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
713 }
714 for (index = 0; index < number_of_rx_vectors; index++) {
715 int vector = index + 1 + used_tx_channels;
716 u32 int_bit = INT_BIT_DMA_RX_(index);
717
718 /* map RX interrupt to vector */
719 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector);
720 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0);
721 if (flags &
722 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
723 int_vec_en_auto_clr |= INT_VEC_EN_(vector);
724 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
725 int_vec_en_auto_clr);
726 }
727
728 /* Remove RX interrupt from shared mask */
729 intr->vector_list[0].int_mask &= ~int_bit;
730 ret = lan743x_intr_register_isr(adapter, vector, flags,
731 int_bit, lan743x_rx_isr,
732 &adapter->rx[index]);
733 if (ret)
734 goto clean_up;
735 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
736
737 lan743x_csr_write(adapter, INT_VEC_EN_SET,
738 INT_VEC_EN_(vector));
739 }
740 }
741 return 0;
742
743clean_up:
744 lan743x_intr_close(adapter);
745 return ret;
746}
747
748static int lan743x_dp_write(struct lan743x_adapter *adapter,
749 u32 select, u32 addr, u32 length, u32 *buf)
750{
751 u32 dp_sel;
752 int i;
753
754 if (lan743x_csr_wait_for_bit_atomic(adapter, DP_SEL, DP_SEL_DPRDY_,
755 1, 40, 100, 100))
756 return -EIO;
757 dp_sel = lan743x_csr_read(adapter, DP_SEL);
758 dp_sel &= ~DP_SEL_MASK_;
759 dp_sel |= select;
760 lan743x_csr_write(adapter, DP_SEL, dp_sel);
761
762 for (i = 0; i < length; i++) {
763 lan743x_csr_write(adapter, DP_ADDR, addr + i);
764 lan743x_csr_write(adapter, DP_DATA_0, buf[i]);
765 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_);
766 if (lan743x_csr_wait_for_bit_atomic(adapter, DP_SEL,
767 DP_SEL_DPRDY_,
768 1, 40, 100, 100))
769 return -EIO;
770 }
771
772 return 0;
773}
774
775static u32 lan743x_mac_mii_access(u16 id, u16 index, int read)
776{
777 u32 ret;
778
779 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
780 MAC_MII_ACC_PHY_ADDR_MASK_;
781 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) &
782 MAC_MII_ACC_MIIRINDA_MASK_;
783
784 if (read)
785 ret |= MAC_MII_ACC_MII_READ_;
786 else
787 ret |= MAC_MII_ACC_MII_WRITE_;
788 ret |= MAC_MII_ACC_MII_BUSY_;
789
790 return ret;
791}
792
793static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter)
794{
795 u32 data;
796
797 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data,
798 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000);
799}
800
801static int lan743x_mdiobus_read_c22(struct mii_bus *bus, int phy_id, int index)
802{
803 struct lan743x_adapter *adapter = bus->priv;
804 u32 val, mii_access;
805 int ret;
806
807 /* confirm MII not busy */
808 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
809 if (ret < 0)
810 return ret;
811
812 /* set the address, index & direction (read from PHY) */
813 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ);
814 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
815 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
816 if (ret < 0)
817 return ret;
818
819 val = lan743x_csr_read(adapter, MAC_MII_DATA);
820 return (int)(val & 0xFFFF);
821}
822
823static int lan743x_mdiobus_write_c22(struct mii_bus *bus,
824 int phy_id, int index, u16 regval)
825{
826 struct lan743x_adapter *adapter = bus->priv;
827 u32 val, mii_access;
828 int ret;
829
830 /* confirm MII not busy */
831 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
832 if (ret < 0)
833 return ret;
834 val = (u32)regval;
835 lan743x_csr_write(adapter, MAC_MII_DATA, val);
836
837 /* set the address, index & direction (write to PHY) */
838 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE);
839 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
840 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
841 return ret;
842}
843
844static u32 lan743x_mac_mmd_access(int id, int dev_addr, int op)
845{
846 u32 ret;
847
848 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
849 MAC_MII_ACC_PHY_ADDR_MASK_;
850 ret |= (dev_addr << MAC_MII_ACC_MIIMMD_SHIFT_) &
851 MAC_MII_ACC_MIIMMD_MASK_;
852 if (op == MMD_ACCESS_WRITE)
853 ret |= MAC_MII_ACC_MIICMD_WRITE_;
854 else if (op == MMD_ACCESS_READ)
855 ret |= MAC_MII_ACC_MIICMD_READ_;
856 else if (op == MMD_ACCESS_READ_INC)
857 ret |= MAC_MII_ACC_MIICMD_READ_INC_;
858 else
859 ret |= MAC_MII_ACC_MIICMD_ADDR_;
860 ret |= (MAC_MII_ACC_MII_BUSY_ | MAC_MII_ACC_MIICL45_);
861
862 return ret;
863}
864
865static int lan743x_mdiobus_read_c45(struct mii_bus *bus, int phy_id,
866 int dev_addr, int index)
867{
868 struct lan743x_adapter *adapter = bus->priv;
869 u32 mmd_access;
870 int ret;
871
872 /* confirm MII not busy */
873 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
874 if (ret < 0)
875 return ret;
876
877 /* Load Register Address */
878 lan743x_csr_write(adapter, MAC_MII_DATA, index);
879 mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
880 MMD_ACCESS_ADDRESS);
881 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
882 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
883 if (ret < 0)
884 return ret;
885
886 /* Read Data */
887 mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
888 MMD_ACCESS_READ);
889 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
890 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
891 if (ret < 0)
892 return ret;
893
894 ret = lan743x_csr_read(adapter, MAC_MII_DATA);
895 return (int)(ret & 0xFFFF);
896}
897
898static int lan743x_mdiobus_write_c45(struct mii_bus *bus, int phy_id,
899 int dev_addr, int index, u16 regval)
900{
901 struct lan743x_adapter *adapter = bus->priv;
902 u32 mmd_access;
903 int ret;
904
905 /* confirm MII not busy */
906 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
907 if (ret < 0)
908 return ret;
909
910 /* Load Register Address */
911 lan743x_csr_write(adapter, MAC_MII_DATA, (u32)index);
912 mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
913 MMD_ACCESS_ADDRESS);
914 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
915 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
916 if (ret < 0)
917 return ret;
918
919 /* Write Data */
920 lan743x_csr_write(adapter, MAC_MII_DATA, (u32)regval);
921 mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
922 MMD_ACCESS_WRITE);
923 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
924
925 return lan743x_mac_mii_wait_till_not_busy(adapter);
926}
927
928static int lan743x_sgmii_wait_till_not_busy(struct lan743x_adapter *adapter)
929{
930 u32 data;
931 int ret;
932
933 ret = readx_poll_timeout(LAN743X_CSR_READ_OP, SGMII_ACC, data,
934 !(data & SGMII_ACC_SGMII_BZY_), 100, 1000000);
935 if (ret < 0)
936 netif_err(adapter, drv, adapter->netdev,
937 "%s: error %d sgmii wait timeout\n", __func__, ret);
938
939 return ret;
940}
941
942int lan743x_sgmii_read(struct lan743x_adapter *adapter, u8 mmd, u16 addr)
943{
944 u32 mmd_access;
945 int ret;
946 u32 val;
947
948 if (mmd > 31) {
949 netif_err(adapter, probe, adapter->netdev,
950 "%s mmd should <= 31\n", __func__);
951 return -EINVAL;
952 }
953
954 mutex_lock(&adapter->sgmii_rw_lock);
955 /* Load Register Address */
956 mmd_access = mmd << SGMII_ACC_SGMII_MMD_SHIFT_;
957 mmd_access |= (addr | SGMII_ACC_SGMII_BZY_);
958 lan743x_csr_write(adapter, SGMII_ACC, mmd_access);
959 ret = lan743x_sgmii_wait_till_not_busy(adapter);
960 if (ret < 0)
961 goto sgmii_unlock;
962
963 val = lan743x_csr_read(adapter, SGMII_DATA);
964 ret = (int)(val & SGMII_DATA_MASK_);
965
966sgmii_unlock:
967 mutex_unlock(&adapter->sgmii_rw_lock);
968
969 return ret;
970}
971
972static int lan743x_sgmii_write(struct lan743x_adapter *adapter,
973 u8 mmd, u16 addr, u16 val)
974{
975 u32 mmd_access;
976 int ret;
977
978 if (mmd > 31) {
979 netif_err(adapter, probe, adapter->netdev,
980 "%s mmd should <= 31\n", __func__);
981 return -EINVAL;
982 }
983 mutex_lock(&adapter->sgmii_rw_lock);
984 /* Load Register Data */
985 lan743x_csr_write(adapter, SGMII_DATA, (u32)(val & SGMII_DATA_MASK_));
986 /* Load Register Address */
987 mmd_access = mmd << SGMII_ACC_SGMII_MMD_SHIFT_;
988 mmd_access |= (addr | SGMII_ACC_SGMII_BZY_ | SGMII_ACC_SGMII_WR_);
989 lan743x_csr_write(adapter, SGMII_ACC, mmd_access);
990 ret = lan743x_sgmii_wait_till_not_busy(adapter);
991 mutex_unlock(&adapter->sgmii_rw_lock);
992
993 return ret;
994}
995
996static int lan743x_get_lsd(int speed, int duplex, u8 mss)
997{
998 int lsd;
999
1000 switch (speed) {
1001 case SPEED_2500:
1002 if (mss == MASTER_SLAVE_STATE_SLAVE)
1003 lsd = LINK_2500_SLAVE;
1004 else
1005 lsd = LINK_2500_MASTER;
1006 break;
1007 case SPEED_1000:
1008 if (mss == MASTER_SLAVE_STATE_SLAVE)
1009 lsd = LINK_1000_SLAVE;
1010 else
1011 lsd = LINK_1000_MASTER;
1012 break;
1013 case SPEED_100:
1014 if (duplex == DUPLEX_FULL)
1015 lsd = LINK_100FD;
1016 else
1017 lsd = LINK_100HD;
1018 break;
1019 case SPEED_10:
1020 if (duplex == DUPLEX_FULL)
1021 lsd = LINK_10FD;
1022 else
1023 lsd = LINK_10HD;
1024 break;
1025 default:
1026 lsd = -EINVAL;
1027 }
1028
1029 return lsd;
1030}
1031
1032static int lan743x_sgmii_mpll_set(struct lan743x_adapter *adapter,
1033 u16 baud)
1034{
1035 int mpllctrl0;
1036 int mpllctrl1;
1037 int miscctrl1;
1038 int ret;
1039
1040 mpllctrl0 = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
1041 VR_MII_GEN2_4_MPLL_CTRL0);
1042 if (mpllctrl0 < 0)
1043 return mpllctrl0;
1044
1045 mpllctrl0 &= ~VR_MII_MPLL_CTRL0_USE_REFCLK_PAD_;
1046 if (baud == VR_MII_BAUD_RATE_1P25GBPS) {
1047 mpllctrl1 = VR_MII_MPLL_MULTIPLIER_100;
1048 /* mpll_baud_clk/4 */
1049 miscctrl1 = 0xA;
1050 } else {
1051 mpllctrl1 = VR_MII_MPLL_MULTIPLIER_125;
1052 /* mpll_baud_clk/2 */
1053 miscctrl1 = 0x5;
1054 }
1055
1056 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1057 VR_MII_GEN2_4_MPLL_CTRL0, mpllctrl0);
1058 if (ret < 0)
1059 return ret;
1060
1061 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1062 VR_MII_GEN2_4_MPLL_CTRL1, mpllctrl1);
1063 if (ret < 0)
1064 return ret;
1065
1066 return lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1067 VR_MII_GEN2_4_MISC_CTRL1, miscctrl1);
1068}
1069
1070static int lan743x_sgmii_2_5G_mode_set(struct lan743x_adapter *adapter,
1071 bool enable)
1072{
1073 if (enable)
1074 return lan743x_sgmii_mpll_set(adapter,
1075 VR_MII_BAUD_RATE_3P125GBPS);
1076 else
1077 return lan743x_sgmii_mpll_set(adapter,
1078 VR_MII_BAUD_RATE_1P25GBPS);
1079}
1080
1081static int lan743x_serdes_clock_and_aneg_update(struct lan743x_adapter *adapter)
1082{
1083 enum lan743x_sgmii_lsd lsd = adapter->sgmii_lsd;
1084 int mii_ctrl;
1085 int dgt_ctrl;
1086 int an_ctrl;
1087 int ret;
1088
1089 if (lsd == LINK_2500_MASTER || lsd == LINK_2500_SLAVE)
1090 /* Switch to 2.5 Gbps */
1091 ret = lan743x_sgmii_2_5G_mode_set(adapter, true);
1092 else
1093 /* Switch to 10/100/1000 Mbps clock */
1094 ret = lan743x_sgmii_2_5G_mode_set(adapter, false);
1095 if (ret < 0)
1096 return ret;
1097
1098 /* Enable SGMII Auto NEG */
1099 mii_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, MII_BMCR);
1100 if (mii_ctrl < 0)
1101 return mii_ctrl;
1102
1103 an_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, VR_MII_AN_CTRL);
1104 if (an_ctrl < 0)
1105 return an_ctrl;
1106
1107 dgt_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
1108 VR_MII_DIG_CTRL1);
1109 if (dgt_ctrl < 0)
1110 return dgt_ctrl;
1111
1112 if (lsd == LINK_2500_MASTER || lsd == LINK_2500_SLAVE) {
1113 mii_ctrl &= ~(BMCR_ANENABLE | BMCR_ANRESTART | BMCR_SPEED100);
1114 mii_ctrl |= BMCR_SPEED1000;
1115 dgt_ctrl |= VR_MII_DIG_CTRL1_CL37_TMR_OVR_RIDE_;
1116 dgt_ctrl &= ~VR_MII_DIG_CTRL1_MAC_AUTO_SW_;
1117 /* In order for Auto-Negotiation to operate properly at
1118 * 2.5 Gbps the 1.6ms link timer values must be adjusted
1119 * The VR_MII_LINK_TIMER_CTRL Register must be set to
1120 * 16'h7A1 and The CL37_TMR_OVR_RIDE bit of the
1121 * VR_MII_DIG_CTRL1 Register set to 1
1122 */
1123 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1124 VR_MII_LINK_TIMER_CTRL, 0x7A1);
1125 if (ret < 0)
1126 return ret;
1127 } else {
1128 mii_ctrl |= (BMCR_ANENABLE | BMCR_ANRESTART);
1129 an_ctrl &= ~VR_MII_AN_CTRL_SGMII_LINK_STS_;
1130 dgt_ctrl &= ~VR_MII_DIG_CTRL1_CL37_TMR_OVR_RIDE_;
1131 dgt_ctrl |= VR_MII_DIG_CTRL1_MAC_AUTO_SW_;
1132 }
1133
1134 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR,
1135 mii_ctrl);
1136 if (ret < 0)
1137 return ret;
1138
1139 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1140 VR_MII_DIG_CTRL1, dgt_ctrl);
1141 if (ret < 0)
1142 return ret;
1143
1144 return lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1145 VR_MII_AN_CTRL, an_ctrl);
1146}
1147
1148static int lan743x_pcs_seq_state(struct lan743x_adapter *adapter, u8 state)
1149{
1150 u8 wait_cnt = 0;
1151 u32 dig_sts;
1152
1153 do {
1154 dig_sts = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
1155 VR_MII_DIG_STS);
1156 if (((dig_sts & VR_MII_DIG_STS_PSEQ_STATE_MASK_) >>
1157 VR_MII_DIG_STS_PSEQ_STATE_POS_) == state)
1158 break;
1159 usleep_range(1000, 2000);
1160 } while (wait_cnt++ < 10);
1161
1162 if (wait_cnt >= 10)
1163 return -ETIMEDOUT;
1164
1165 return 0;
1166}
1167
1168static int lan743x_pcs_power_reset(struct lan743x_adapter *adapter)
1169{
1170 int mii_ctl;
1171 int ret;
1172
1173 /* SGMII/1000/2500BASE-X PCS power down */
1174 mii_ctl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, MII_BMCR);
1175 if (mii_ctl < 0)
1176 return mii_ctl;
1177
1178 mii_ctl |= BMCR_PDOWN;
1179 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR, mii_ctl);
1180 if (ret < 0)
1181 return ret;
1182
1183 ret = lan743x_pcs_seq_state(adapter, PCS_POWER_STATE_DOWN);
1184 if (ret < 0)
1185 return ret;
1186
1187 /* SGMII/1000/2500BASE-X PCS power up */
1188 mii_ctl &= ~BMCR_PDOWN;
1189 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR, mii_ctl);
1190 if (ret < 0)
1191 return ret;
1192
1193 return lan743x_pcs_seq_state(adapter, PCS_POWER_STATE_UP);
1194}
1195
1196static void lan743x_mac_set_address(struct lan743x_adapter *adapter,
1197 u8 *addr)
1198{
1199 u32 addr_lo, addr_hi;
1200
1201 addr_lo = addr[0] |
1202 addr[1] << 8 |
1203 addr[2] << 16 |
1204 addr[3] << 24;
1205 addr_hi = addr[4] |
1206 addr[5] << 8;
1207 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo);
1208 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi);
1209
1210 ether_addr_copy(adapter->mac_address, addr);
1211 netif_info(adapter, drv, adapter->netdev,
1212 "MAC address set to %pM\n", addr);
1213}
1214
1215static int lan743x_mac_init(struct lan743x_adapter *adapter)
1216{
1217 bool mac_address_valid = true;
1218 struct net_device *netdev;
1219 u32 mac_addr_hi = 0;
1220 u32 mac_addr_lo = 0;
1221 u32 data;
1222
1223 netdev = adapter->netdev;
1224
1225 /* disable auto duplex, and speed detection. Phylib does that */
1226 data = lan743x_csr_read(adapter, MAC_CR);
1227 data &= ~(MAC_CR_ADD_ | MAC_CR_ASD_);
1228 data |= MAC_CR_CNTR_RST_;
1229 lan743x_csr_write(adapter, MAC_CR, data);
1230
1231 if (!is_valid_ether_addr(adapter->mac_address)) {
1232 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH);
1233 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL);
1234 adapter->mac_address[0] = mac_addr_lo & 0xFF;
1235 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF;
1236 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF;
1237 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF;
1238 adapter->mac_address[4] = mac_addr_hi & 0xFF;
1239 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF;
1240
1241 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) &&
1242 mac_addr_lo == 0xFFFFFFFF) {
1243 mac_address_valid = false;
1244 } else if (!is_valid_ether_addr(adapter->mac_address)) {
1245 mac_address_valid = false;
1246 }
1247
1248 if (!mac_address_valid)
1249 eth_random_addr(adapter->mac_address);
1250 }
1251 lan743x_mac_set_address(adapter, adapter->mac_address);
1252 eth_hw_addr_set(netdev, adapter->mac_address);
1253
1254 return 0;
1255}
1256
1257static int lan743x_mac_open(struct lan743x_adapter *adapter)
1258{
1259 u32 temp;
1260
1261 temp = lan743x_csr_read(adapter, MAC_RX);
1262 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_);
1263 temp = lan743x_csr_read(adapter, MAC_TX);
1264 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_);
1265 return 0;
1266}
1267
1268static void lan743x_mac_close(struct lan743x_adapter *adapter)
1269{
1270 u32 temp;
1271
1272 temp = lan743x_csr_read(adapter, MAC_TX);
1273 temp &= ~MAC_TX_TXEN_;
1274 lan743x_csr_write(adapter, MAC_TX, temp);
1275 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_,
1276 1, 1000, 20000, 100);
1277
1278 temp = lan743x_csr_read(adapter, MAC_RX);
1279 temp &= ~MAC_RX_RXEN_;
1280 lan743x_csr_write(adapter, MAC_RX, temp);
1281 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
1282 1, 1000, 20000, 100);
1283}
1284
1285void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter,
1286 bool tx_enable, bool rx_enable)
1287{
1288 u32 flow_setting = 0;
1289
1290 /* set maximum pause time because when fifo space frees
1291 * up a zero value pause frame will be sent to release the pause
1292 */
1293 flow_setting = MAC_FLOW_CR_FCPT_MASK_;
1294 if (tx_enable)
1295 flow_setting |= MAC_FLOW_CR_TX_FCEN_;
1296 if (rx_enable)
1297 flow_setting |= MAC_FLOW_CR_RX_FCEN_;
1298 lan743x_csr_write(adapter, MAC_FLOW, flow_setting);
1299}
1300
1301static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu)
1302{
1303 int enabled = 0;
1304 u32 mac_rx = 0;
1305
1306 mac_rx = lan743x_csr_read(adapter, MAC_RX);
1307 if (mac_rx & MAC_RX_RXEN_) {
1308 enabled = 1;
1309 if (mac_rx & MAC_RX_RXD_) {
1310 lan743x_csr_write(adapter, MAC_RX, mac_rx);
1311 mac_rx &= ~MAC_RX_RXD_;
1312 }
1313 mac_rx &= ~MAC_RX_RXEN_;
1314 lan743x_csr_write(adapter, MAC_RX, mac_rx);
1315 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
1316 1, 1000, 20000, 100);
1317 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_);
1318 }
1319
1320 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_);
1321 mac_rx |= (((new_mtu + ETH_HLEN + ETH_FCS_LEN)
1322 << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_);
1323 lan743x_csr_write(adapter, MAC_RX, mac_rx);
1324
1325 if (enabled) {
1326 mac_rx |= MAC_RX_RXEN_;
1327 lan743x_csr_write(adapter, MAC_RX, mac_rx);
1328 }
1329 return 0;
1330}
1331
1332/* PHY */
1333static int lan743x_phy_reset(struct lan743x_adapter *adapter)
1334{
1335 u32 data;
1336
1337 /* Only called with in probe, and before mdiobus_register */
1338
1339 data = lan743x_csr_read(adapter, PMT_CTL);
1340 data |= PMT_CTL_ETH_PHY_RST_;
1341 lan743x_csr_write(adapter, PMT_CTL, data);
1342
1343 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data,
1344 (!(data & PMT_CTL_ETH_PHY_RST_) &&
1345 (data & PMT_CTL_READY_)),
1346 50000, 1000000);
1347}
1348
1349static int lan743x_phy_init(struct lan743x_adapter *adapter)
1350{
1351 return lan743x_phy_reset(adapter);
1352}
1353
1354static void lan743x_phy_interface_select(struct lan743x_adapter *adapter)
1355{
1356 u32 id_rev;
1357 u32 data;
1358
1359 data = lan743x_csr_read(adapter, MAC_CR);
1360 id_rev = adapter->csr.id_rev & ID_REV_ID_MASK_;
1361
1362 if (adapter->is_pci11x1x && adapter->is_sgmii_en)
1363 adapter->phy_interface = PHY_INTERFACE_MODE_SGMII;
1364 else if (id_rev == ID_REV_ID_LAN7430_)
1365 adapter->phy_interface = PHY_INTERFACE_MODE_GMII;
1366 else if ((id_rev == ID_REV_ID_LAN7431_) && (data & MAC_CR_MII_EN_))
1367 adapter->phy_interface = PHY_INTERFACE_MODE_MII;
1368 else
1369 adapter->phy_interface = PHY_INTERFACE_MODE_RGMII;
1370
1371 netif_dbg(adapter, drv, adapter->netdev,
1372 "selected phy interface: 0x%X\n", adapter->phy_interface);
1373}
1374
1375static void lan743x_rfe_open(struct lan743x_adapter *adapter)
1376{
1377 lan743x_csr_write(adapter, RFE_RSS_CFG,
1378 RFE_RSS_CFG_UDP_IPV6_EX_ |
1379 RFE_RSS_CFG_TCP_IPV6_EX_ |
1380 RFE_RSS_CFG_IPV6_EX_ |
1381 RFE_RSS_CFG_UDP_IPV6_ |
1382 RFE_RSS_CFG_TCP_IPV6_ |
1383 RFE_RSS_CFG_IPV6_ |
1384 RFE_RSS_CFG_UDP_IPV4_ |
1385 RFE_RSS_CFG_TCP_IPV4_ |
1386 RFE_RSS_CFG_IPV4_ |
1387 RFE_RSS_CFG_VALID_HASH_BITS_ |
1388 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ |
1389 RFE_RSS_CFG_RSS_HASH_STORE_ |
1390 RFE_RSS_CFG_RSS_ENABLE_);
1391}
1392
1393static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter)
1394{
1395 u8 *mac_addr;
1396 u32 mac_addr_hi = 0;
1397 u32 mac_addr_lo = 0;
1398
1399 /* Add mac address to perfect Filter */
1400 mac_addr = adapter->mac_address;
1401 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) |
1402 (((u32)(mac_addr[1])) << 8) |
1403 (((u32)(mac_addr[2])) << 16) |
1404 (((u32)(mac_addr[3])) << 24));
1405 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) |
1406 (((u32)(mac_addr[5])) << 8));
1407
1408 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo);
1409 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0),
1410 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_);
1411}
1412
1413static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter)
1414{
1415 struct net_device *netdev = adapter->netdev;
1416 u32 hash_table[DP_SEL_VHF_HASH_LEN];
1417 u32 rfctl;
1418 u32 data;
1419
1420 rfctl = lan743x_csr_read(adapter, RFE_CTL);
1421 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ |
1422 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
1423 rfctl |= RFE_CTL_AB_;
1424 if (netdev->flags & IFF_PROMISC) {
1425 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_;
1426 } else {
1427 if (netdev->flags & IFF_ALLMULTI)
1428 rfctl |= RFE_CTL_AM_;
1429 }
1430
1431 if (netdev->features & NETIF_F_RXCSUM)
1432 rfctl |= RFE_CTL_IP_COE_ | RFE_CTL_TCP_UDP_COE_;
1433
1434 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32));
1435 if (netdev_mc_count(netdev)) {
1436 struct netdev_hw_addr *ha;
1437 int i;
1438
1439 rfctl |= RFE_CTL_DA_PERFECT_;
1440 i = 1;
1441 netdev_for_each_mc_addr(ha, netdev) {
1442 /* set first 32 into Perfect Filter */
1443 if (i < 33) {
1444 lan743x_csr_write(adapter,
1445 RFE_ADDR_FILT_HI(i), 0);
1446 data = ha->addr[3];
1447 data = ha->addr[2] | (data << 8);
1448 data = ha->addr[1] | (data << 8);
1449 data = ha->addr[0] | (data << 8);
1450 lan743x_csr_write(adapter,
1451 RFE_ADDR_FILT_LO(i), data);
1452 data = ha->addr[5];
1453 data = ha->addr[4] | (data << 8);
1454 data |= RFE_ADDR_FILT_HI_VALID_;
1455 lan743x_csr_write(adapter,
1456 RFE_ADDR_FILT_HI(i), data);
1457 } else {
1458 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >>
1459 23) & 0x1FF;
1460 hash_table[bitnum / 32] |= (1 << (bitnum % 32));
1461 rfctl |= RFE_CTL_MCAST_HASH_;
1462 }
1463 i++;
1464 }
1465 }
1466
1467 lan743x_dp_write(adapter, DP_SEL_RFE_RAM,
1468 DP_SEL_VHF_VLAN_LEN,
1469 DP_SEL_VHF_HASH_LEN, hash_table);
1470 lan743x_csr_write(adapter, RFE_CTL, rfctl);
1471}
1472
1473static int lan743x_dmac_init(struct lan743x_adapter *adapter)
1474{
1475 u32 data = 0;
1476
1477 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_);
1478 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_,
1479 0, 1000, 20000, 100);
1480 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) {
1481 case DMA_DESCRIPTOR_SPACING_16:
1482 data = DMAC_CFG_MAX_DSPACE_16_;
1483 break;
1484 case DMA_DESCRIPTOR_SPACING_32:
1485 data = DMAC_CFG_MAX_DSPACE_32_;
1486 break;
1487 case DMA_DESCRIPTOR_SPACING_64:
1488 data = DMAC_CFG_MAX_DSPACE_64_;
1489 break;
1490 case DMA_DESCRIPTOR_SPACING_128:
1491 data = DMAC_CFG_MAX_DSPACE_128_;
1492 break;
1493 default:
1494 return -EPERM;
1495 }
1496 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1497 data |= DMAC_CFG_COAL_EN_;
1498 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_;
1499 data |= DMAC_CFG_MAX_READ_REQ_SET_(6);
1500 lan743x_csr_write(adapter, DMAC_CFG, data);
1501 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1);
1502 data |= DMAC_COAL_CFG_TIMER_TX_START_;
1503 data |= DMAC_COAL_CFG_FLUSH_INTS_;
1504 data |= DMAC_COAL_CFG_INT_EXIT_COAL_;
1505 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_;
1506 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A);
1507 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C);
1508 lan743x_csr_write(adapter, DMAC_COAL_CFG, data);
1509 data = DMAC_OBFF_TX_THRES_SET_(0x08);
1510 data |= DMAC_OBFF_RX_THRES_SET_(0x0A);
1511 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data);
1512 return 0;
1513}
1514
1515static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter,
1516 int tx_channel)
1517{
1518 u32 dmac_cmd = 0;
1519
1520 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1521 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1522 DMAC_CMD_START_T_(tx_channel)),
1523 (dmac_cmd &
1524 DMAC_CMD_STOP_T_(tx_channel)));
1525}
1526
1527static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter,
1528 int tx_channel)
1529{
1530 int timeout = 100;
1531 int result = 0;
1532
1533 while (timeout &&
1534 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) ==
1535 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1536 usleep_range(1000, 20000);
1537 timeout--;
1538 }
1539 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1540 result = -ENODEV;
1541 return result;
1542}
1543
1544static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter,
1545 int rx_channel)
1546{
1547 u32 dmac_cmd = 0;
1548
1549 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1550 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1551 DMAC_CMD_START_R_(rx_channel)),
1552 (dmac_cmd &
1553 DMAC_CMD_STOP_R_(rx_channel)));
1554}
1555
1556static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter,
1557 int rx_channel)
1558{
1559 int timeout = 100;
1560 int result = 0;
1561
1562 while (timeout &&
1563 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) ==
1564 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1565 usleep_range(1000, 20000);
1566 timeout--;
1567 }
1568 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1569 result = -ENODEV;
1570 return result;
1571}
1572
1573static void lan743x_tx_release_desc(struct lan743x_tx *tx,
1574 int descriptor_index, bool cleanup)
1575{
1576 struct lan743x_tx_buffer_info *buffer_info = NULL;
1577 struct lan743x_tx_descriptor *descriptor = NULL;
1578 u32 descriptor_type = 0;
1579 bool ignore_sync;
1580
1581 descriptor = &tx->ring_cpu_ptr[descriptor_index];
1582 buffer_info = &tx->buffer_info[descriptor_index];
1583 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE))
1584 goto done;
1585
1586 descriptor_type = le32_to_cpu(descriptor->data0) &
1587 TX_DESC_DATA0_DTYPE_MASK_;
1588 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_)
1589 goto clean_up_data_descriptor;
1590 else
1591 goto clear_active;
1592
1593clean_up_data_descriptor:
1594 if (buffer_info->dma_ptr) {
1595 if (buffer_info->flags &
1596 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) {
1597 dma_unmap_page(&tx->adapter->pdev->dev,
1598 buffer_info->dma_ptr,
1599 buffer_info->buffer_length,
1600 DMA_TO_DEVICE);
1601 } else {
1602 dma_unmap_single(&tx->adapter->pdev->dev,
1603 buffer_info->dma_ptr,
1604 buffer_info->buffer_length,
1605 DMA_TO_DEVICE);
1606 }
1607 buffer_info->dma_ptr = 0;
1608 buffer_info->buffer_length = 0;
1609 }
1610 if (!buffer_info->skb)
1611 goto clear_active;
1612
1613 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) {
1614 dev_kfree_skb_any(buffer_info->skb);
1615 goto clear_skb;
1616 }
1617
1618 if (cleanup) {
1619 lan743x_ptp_unrequest_tx_timestamp(tx->adapter);
1620 dev_kfree_skb_any(buffer_info->skb);
1621 } else {
1622 ignore_sync = (buffer_info->flags &
1623 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0;
1624 lan743x_ptp_tx_timestamp_skb(tx->adapter,
1625 buffer_info->skb, ignore_sync);
1626 }
1627
1628clear_skb:
1629 buffer_info->skb = NULL;
1630
1631clear_active:
1632 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE;
1633
1634done:
1635 memset(buffer_info, 0, sizeof(*buffer_info));
1636 memset(descriptor, 0, sizeof(*descriptor));
1637}
1638
1639static int lan743x_tx_next_index(struct lan743x_tx *tx, int index)
1640{
1641 return ((++index) % tx->ring_size);
1642}
1643
1644static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx)
1645{
1646 while (le32_to_cpu(*tx->head_cpu_ptr) != (tx->last_head)) {
1647 lan743x_tx_release_desc(tx, tx->last_head, false);
1648 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1649 }
1650}
1651
1652static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx)
1653{
1654 u32 original_head = 0;
1655
1656 original_head = tx->last_head;
1657 do {
1658 lan743x_tx_release_desc(tx, tx->last_head, true);
1659 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1660 } while (tx->last_head != original_head);
1661 memset(tx->ring_cpu_ptr, 0,
1662 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size));
1663 memset(tx->buffer_info, 0,
1664 sizeof(*tx->buffer_info) * (tx->ring_size));
1665}
1666
1667static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx,
1668 struct sk_buff *skb)
1669{
1670 int result = 1; /* 1 for the main skb buffer */
1671 int nr_frags = 0;
1672
1673 if (skb_is_gso(skb))
1674 result++; /* requires an extension descriptor */
1675 nr_frags = skb_shinfo(skb)->nr_frags;
1676 result += nr_frags; /* 1 for each fragment buffer */
1677 return result;
1678}
1679
1680static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx)
1681{
1682 int last_head = tx->last_head;
1683 int last_tail = tx->last_tail;
1684
1685 if (last_tail >= last_head)
1686 return tx->ring_size - last_tail + last_head - 1;
1687 else
1688 return last_head - last_tail - 1;
1689}
1690
1691static void lan743x_rx_cfg_b_tstamp_config(struct lan743x_adapter *adapter,
1692 int rx_ts_config)
1693{
1694 int channel_number;
1695 int index;
1696 u32 data;
1697
1698 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
1699 channel_number = adapter->rx[index].channel_number;
1700 data = lan743x_csr_read(adapter, RX_CFG_B(channel_number));
1701 data &= RX_CFG_B_TS_MASK_;
1702 data |= rx_ts_config;
1703 lan743x_csr_write(adapter, RX_CFG_B(channel_number),
1704 data);
1705 }
1706}
1707
1708int lan743x_rx_set_tstamp_mode(struct lan743x_adapter *adapter,
1709 int rx_filter)
1710{
1711 u32 data;
1712
1713 switch (rx_filter) {
1714 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1715 lan743x_rx_cfg_b_tstamp_config(adapter,
1716 RX_CFG_B_TS_DESCR_EN_);
1717 data = lan743x_csr_read(adapter, PTP_RX_TS_CFG);
1718 data |= PTP_RX_TS_CFG_EVENT_MSGS_;
1719 lan743x_csr_write(adapter, PTP_RX_TS_CFG, data);
1720 break;
1721 case HWTSTAMP_FILTER_NONE:
1722 lan743x_rx_cfg_b_tstamp_config(adapter,
1723 RX_CFG_B_TS_NONE_);
1724 break;
1725 case HWTSTAMP_FILTER_ALL:
1726 lan743x_rx_cfg_b_tstamp_config(adapter,
1727 RX_CFG_B_TS_ALL_RX_);
1728 break;
1729 default:
1730 return -ERANGE;
1731 }
1732 return 0;
1733}
1734
1735void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
1736 bool enable_timestamping,
1737 bool enable_onestep_sync)
1738{
1739 if (enable_timestamping)
1740 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED;
1741 else
1742 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED;
1743 if (enable_onestep_sync)
1744 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC;
1745 else
1746 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC;
1747}
1748
1749static int lan743x_tx_frame_start(struct lan743x_tx *tx,
1750 unsigned char *first_buffer,
1751 unsigned int first_buffer_length,
1752 unsigned int frame_length,
1753 bool time_stamp,
1754 bool check_sum)
1755{
1756 /* called only from within lan743x_tx_xmit_frame.
1757 * assuming tx->ring_lock has already been acquired.
1758 */
1759 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1760 struct lan743x_tx_buffer_info *buffer_info = NULL;
1761 struct lan743x_adapter *adapter = tx->adapter;
1762 struct device *dev = &adapter->pdev->dev;
1763 dma_addr_t dma_ptr;
1764
1765 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS;
1766 tx->frame_first = tx->last_tail;
1767 tx->frame_tail = tx->frame_first;
1768
1769 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1770 buffer_info = &tx->buffer_info[tx->frame_tail];
1771 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length,
1772 DMA_TO_DEVICE);
1773 if (dma_mapping_error(dev, dma_ptr))
1774 return -ENOMEM;
1775
1776 tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr));
1777 tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr));
1778 tx_descriptor->data3 = cpu_to_le32((frame_length << 16) &
1779 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_);
1780
1781 buffer_info->skb = NULL;
1782 buffer_info->dma_ptr = dma_ptr;
1783 buffer_info->buffer_length = first_buffer_length;
1784 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1785
1786 tx->frame_data0 = (first_buffer_length &
1787 TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1788 TX_DESC_DATA0_DTYPE_DATA_ |
1789 TX_DESC_DATA0_FS_ |
1790 TX_DESC_DATA0_FCS_;
1791 if (time_stamp)
1792 tx->frame_data0 |= TX_DESC_DATA0_TSE_;
1793
1794 if (check_sum)
1795 tx->frame_data0 |= TX_DESC_DATA0_ICE_ |
1796 TX_DESC_DATA0_IPE_ |
1797 TX_DESC_DATA0_TPE_;
1798
1799 /* data0 will be programmed in one of other frame assembler functions */
1800 return 0;
1801}
1802
1803static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx,
1804 unsigned int frame_length,
1805 int nr_frags)
1806{
1807 /* called only from within lan743x_tx_xmit_frame.
1808 * assuming tx->ring_lock has already been acquired.
1809 */
1810 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1811 struct lan743x_tx_buffer_info *buffer_info = NULL;
1812
1813 /* wrap up previous descriptor */
1814 tx->frame_data0 |= TX_DESC_DATA0_EXT_;
1815 if (nr_frags <= 0) {
1816 tx->frame_data0 |= TX_DESC_DATA0_LS_;
1817 tx->frame_data0 |= TX_DESC_DATA0_IOC_;
1818 }
1819 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1820 tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
1821
1822 /* move to next descriptor */
1823 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1824 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1825 buffer_info = &tx->buffer_info[tx->frame_tail];
1826
1827 /* add extension descriptor */
1828 tx_descriptor->data1 = 0;
1829 tx_descriptor->data2 = 0;
1830 tx_descriptor->data3 = 0;
1831
1832 buffer_info->skb = NULL;
1833 buffer_info->dma_ptr = 0;
1834 buffer_info->buffer_length = 0;
1835 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1836
1837 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) |
1838 TX_DESC_DATA0_DTYPE_EXT_ |
1839 TX_DESC_DATA0_EXT_LSO_;
1840
1841 /* data0 will be programmed in one of other frame assembler functions */
1842}
1843
1844static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx,
1845 const skb_frag_t *fragment,
1846 unsigned int frame_length)
1847{
1848 /* called only from within lan743x_tx_xmit_frame
1849 * assuming tx->ring_lock has already been acquired
1850 */
1851 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1852 struct lan743x_tx_buffer_info *buffer_info = NULL;
1853 struct lan743x_adapter *adapter = tx->adapter;
1854 struct device *dev = &adapter->pdev->dev;
1855 unsigned int fragment_length = 0;
1856 dma_addr_t dma_ptr;
1857
1858 fragment_length = skb_frag_size(fragment);
1859 if (!fragment_length)
1860 return 0;
1861
1862 /* wrap up previous descriptor */
1863 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1864 tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
1865
1866 /* move to next descriptor */
1867 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1868 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1869 buffer_info = &tx->buffer_info[tx->frame_tail];
1870 dma_ptr = skb_frag_dma_map(dev, fragment,
1871 0, fragment_length,
1872 DMA_TO_DEVICE);
1873 if (dma_mapping_error(dev, dma_ptr)) {
1874 int desc_index;
1875
1876 /* cleanup all previously setup descriptors */
1877 desc_index = tx->frame_first;
1878 while (desc_index != tx->frame_tail) {
1879 lan743x_tx_release_desc(tx, desc_index, true);
1880 desc_index = lan743x_tx_next_index(tx, desc_index);
1881 }
1882 dma_wmb();
1883 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1884 tx->frame_first = 0;
1885 tx->frame_data0 = 0;
1886 tx->frame_tail = 0;
1887 return -ENOMEM;
1888 }
1889
1890 tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr));
1891 tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr));
1892 tx_descriptor->data3 = cpu_to_le32((frame_length << 16) &
1893 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_);
1894
1895 buffer_info->skb = NULL;
1896 buffer_info->dma_ptr = dma_ptr;
1897 buffer_info->buffer_length = fragment_length;
1898 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1899 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT;
1900
1901 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1902 TX_DESC_DATA0_DTYPE_DATA_ |
1903 TX_DESC_DATA0_FCS_;
1904
1905 /* data0 will be programmed in one of other frame assembler functions */
1906 return 0;
1907}
1908
1909static void lan743x_tx_frame_end(struct lan743x_tx *tx,
1910 struct sk_buff *skb,
1911 bool time_stamp,
1912 bool ignore_sync)
1913{
1914 /* called only from within lan743x_tx_xmit_frame
1915 * assuming tx->ring_lock has already been acquired
1916 */
1917 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1918 struct lan743x_tx_buffer_info *buffer_info = NULL;
1919 struct lan743x_adapter *adapter = tx->adapter;
1920 u32 tx_tail_flags = 0;
1921
1922 /* wrap up previous descriptor */
1923 if ((tx->frame_data0 & TX_DESC_DATA0_DTYPE_MASK_) ==
1924 TX_DESC_DATA0_DTYPE_DATA_) {
1925 tx->frame_data0 |= TX_DESC_DATA0_LS_;
1926 tx->frame_data0 |= TX_DESC_DATA0_IOC_;
1927 }
1928
1929 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1930 buffer_info = &tx->buffer_info[tx->frame_tail];
1931 buffer_info->skb = skb;
1932 if (time_stamp)
1933 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED;
1934 if (ignore_sync)
1935 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC;
1936
1937 tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
1938 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1939 tx->last_tail = tx->frame_tail;
1940
1941 dma_wmb();
1942
1943 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
1944 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_;
1945 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)
1946 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ |
1947 TX_TAIL_SET_TOP_INT_EN_;
1948
1949 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
1950 tx_tail_flags | tx->frame_tail);
1951 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1952}
1953
1954static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
1955 struct sk_buff *skb)
1956{
1957 int required_number_of_descriptors = 0;
1958 unsigned int start_frame_length = 0;
1959 netdev_tx_t retval = NETDEV_TX_OK;
1960 unsigned int frame_length = 0;
1961 unsigned int head_length = 0;
1962 unsigned long irq_flags = 0;
1963 bool do_timestamp = false;
1964 bool ignore_sync = false;
1965 struct netdev_queue *txq;
1966 int nr_frags = 0;
1967 bool gso = false;
1968 int j;
1969
1970 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb);
1971
1972 spin_lock_irqsave(&tx->ring_lock, irq_flags);
1973 if (required_number_of_descriptors >
1974 lan743x_tx_get_avail_desc(tx)) {
1975 if (required_number_of_descriptors > (tx->ring_size - 1)) {
1976 dev_kfree_skb_irq(skb);
1977 } else {
1978 /* save how many descriptors we needed to restart the queue */
1979 tx->rqd_descriptors = required_number_of_descriptors;
1980 retval = NETDEV_TX_BUSY;
1981 txq = netdev_get_tx_queue(tx->adapter->netdev,
1982 tx->channel_number);
1983 netif_tx_stop_queue(txq);
1984 }
1985 goto unlock;
1986 }
1987
1988 /* space available, transmit skb */
1989 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
1990 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) &&
1991 (lan743x_ptp_request_tx_timestamp(tx->adapter))) {
1992 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1993 do_timestamp = true;
1994 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC)
1995 ignore_sync = true;
1996 }
1997 head_length = skb_headlen(skb);
1998 frame_length = skb_pagelen(skb);
1999 nr_frags = skb_shinfo(skb)->nr_frags;
2000 start_frame_length = frame_length;
2001 gso = skb_is_gso(skb);
2002 if (gso) {
2003 start_frame_length = max(skb_shinfo(skb)->gso_size,
2004 (unsigned short)8);
2005 }
2006
2007 if (lan743x_tx_frame_start(tx,
2008 skb->data, head_length,
2009 start_frame_length,
2010 do_timestamp,
2011 skb->ip_summed == CHECKSUM_PARTIAL)) {
2012 dev_kfree_skb_irq(skb);
2013 goto unlock;
2014 }
2015 tx->frame_count++;
2016
2017 if (gso)
2018 lan743x_tx_frame_add_lso(tx, frame_length, nr_frags);
2019
2020 if (nr_frags <= 0)
2021 goto finish;
2022
2023 for (j = 0; j < nr_frags; j++) {
2024 const skb_frag_t *frag = &(skb_shinfo(skb)->frags[j]);
2025
2026 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) {
2027 /* upon error no need to call
2028 * lan743x_tx_frame_end
2029 * frame assembler clean up was performed inside
2030 * lan743x_tx_frame_add_fragment
2031 */
2032 dev_kfree_skb_irq(skb);
2033 goto unlock;
2034 }
2035 }
2036
2037finish:
2038 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync);
2039
2040unlock:
2041 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
2042 return retval;
2043}
2044
2045static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight)
2046{
2047 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi);
2048 struct lan743x_adapter *adapter = tx->adapter;
2049 unsigned long irq_flags = 0;
2050 struct netdev_queue *txq;
2051 u32 ioc_bit = 0;
2052
2053 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
2054 lan743x_csr_read(adapter, DMAC_INT_STS);
2055 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C)
2056 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit);
2057 spin_lock_irqsave(&tx->ring_lock, irq_flags);
2058
2059 /* clean up tx ring */
2060 lan743x_tx_release_completed_descriptors(tx);
2061 txq = netdev_get_tx_queue(adapter->netdev, tx->channel_number);
2062 if (netif_tx_queue_stopped(txq)) {
2063 if (tx->rqd_descriptors) {
2064 if (tx->rqd_descriptors <=
2065 lan743x_tx_get_avail_desc(tx)) {
2066 tx->rqd_descriptors = 0;
2067 netif_tx_wake_queue(txq);
2068 }
2069 } else {
2070 netif_tx_wake_queue(txq);
2071 }
2072 }
2073 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
2074
2075 if (!napi_complete(napi))
2076 goto done;
2077
2078 /* enable isr */
2079 lan743x_csr_write(adapter, INT_EN_SET,
2080 INT_BIT_DMA_TX_(tx->channel_number));
2081 lan743x_csr_read(adapter, INT_STS);
2082
2083done:
2084 return 0;
2085}
2086
2087static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx)
2088{
2089 if (tx->head_cpu_ptr) {
2090 dma_free_coherent(&tx->adapter->pdev->dev,
2091 sizeof(*tx->head_cpu_ptr), tx->head_cpu_ptr,
2092 tx->head_dma_ptr);
2093 tx->head_cpu_ptr = NULL;
2094 tx->head_dma_ptr = 0;
2095 }
2096 kfree(tx->buffer_info);
2097 tx->buffer_info = NULL;
2098
2099 if (tx->ring_cpu_ptr) {
2100 dma_free_coherent(&tx->adapter->pdev->dev,
2101 tx->ring_allocation_size, tx->ring_cpu_ptr,
2102 tx->ring_dma_ptr);
2103 tx->ring_allocation_size = 0;
2104 tx->ring_cpu_ptr = NULL;
2105 tx->ring_dma_ptr = 0;
2106 }
2107 tx->ring_size = 0;
2108}
2109
2110static int lan743x_tx_ring_init(struct lan743x_tx *tx)
2111{
2112 size_t ring_allocation_size = 0;
2113 void *cpu_ptr = NULL;
2114 dma_addr_t dma_ptr;
2115 int ret = -ENOMEM;
2116
2117 tx->ring_size = LAN743X_TX_RING_SIZE;
2118 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) {
2119 ret = -EINVAL;
2120 goto cleanup;
2121 }
2122 if (dma_set_mask_and_coherent(&tx->adapter->pdev->dev,
2123 DMA_BIT_MASK(64))) {
2124 dev_warn(&tx->adapter->pdev->dev,
2125 "lan743x_: No suitable DMA available\n");
2126 ret = -ENOMEM;
2127 goto cleanup;
2128 }
2129 ring_allocation_size = ALIGN(tx->ring_size *
2130 sizeof(struct lan743x_tx_descriptor),
2131 PAGE_SIZE);
2132 dma_ptr = 0;
2133 cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev,
2134 ring_allocation_size, &dma_ptr, GFP_KERNEL);
2135 if (!cpu_ptr) {
2136 ret = -ENOMEM;
2137 goto cleanup;
2138 }
2139
2140 tx->ring_allocation_size = ring_allocation_size;
2141 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr;
2142 tx->ring_dma_ptr = dma_ptr;
2143
2144 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL);
2145 if (!cpu_ptr) {
2146 ret = -ENOMEM;
2147 goto cleanup;
2148 }
2149 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr;
2150 dma_ptr = 0;
2151 cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev,
2152 sizeof(*tx->head_cpu_ptr), &dma_ptr,
2153 GFP_KERNEL);
2154 if (!cpu_ptr) {
2155 ret = -ENOMEM;
2156 goto cleanup;
2157 }
2158
2159 tx->head_cpu_ptr = cpu_ptr;
2160 tx->head_dma_ptr = dma_ptr;
2161 if (tx->head_dma_ptr & 0x3) {
2162 ret = -ENOMEM;
2163 goto cleanup;
2164 }
2165
2166 return 0;
2167
2168cleanup:
2169 lan743x_tx_ring_cleanup(tx);
2170 return ret;
2171}
2172
2173static void lan743x_tx_close(struct lan743x_tx *tx)
2174{
2175 struct lan743x_adapter *adapter = tx->adapter;
2176
2177 lan743x_csr_write(adapter,
2178 DMAC_CMD,
2179 DMAC_CMD_STOP_T_(tx->channel_number));
2180 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number);
2181
2182 lan743x_csr_write(adapter,
2183 DMAC_INT_EN_CLR,
2184 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
2185 lan743x_csr_write(adapter, INT_EN_CLR,
2186 INT_BIT_DMA_TX_(tx->channel_number));
2187 napi_disable(&tx->napi);
2188 netif_napi_del(&tx->napi);
2189
2190 lan743x_csr_write(adapter, FCT_TX_CTL,
2191 FCT_TX_CTL_DIS_(tx->channel_number));
2192 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
2193 FCT_TX_CTL_EN_(tx->channel_number),
2194 0, 1000, 20000, 100);
2195
2196 lan743x_tx_release_all_descriptors(tx);
2197
2198 tx->rqd_descriptors = 0;
2199
2200 lan743x_tx_ring_cleanup(tx);
2201}
2202
2203static int lan743x_tx_open(struct lan743x_tx *tx)
2204{
2205 struct lan743x_adapter *adapter = NULL;
2206 u32 data = 0;
2207 int ret;
2208
2209 adapter = tx->adapter;
2210 ret = lan743x_tx_ring_init(tx);
2211 if (ret)
2212 return ret;
2213
2214 /* initialize fifo */
2215 lan743x_csr_write(adapter, FCT_TX_CTL,
2216 FCT_TX_CTL_RESET_(tx->channel_number));
2217 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
2218 FCT_TX_CTL_RESET_(tx->channel_number),
2219 0, 1000, 20000, 100);
2220
2221 /* enable fifo */
2222 lan743x_csr_write(adapter, FCT_TX_CTL,
2223 FCT_TX_CTL_EN_(tx->channel_number));
2224
2225 /* reset tx channel */
2226 lan743x_csr_write(adapter, DMAC_CMD,
2227 DMAC_CMD_TX_SWR_(tx->channel_number));
2228 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
2229 DMAC_CMD_TX_SWR_(tx->channel_number),
2230 0, 1000, 20000, 100);
2231
2232 /* Write TX_BASE_ADDR */
2233 lan743x_csr_write(adapter,
2234 TX_BASE_ADDRH(tx->channel_number),
2235 DMA_ADDR_HIGH32(tx->ring_dma_ptr));
2236 lan743x_csr_write(adapter,
2237 TX_BASE_ADDRL(tx->channel_number),
2238 DMA_ADDR_LOW32(tx->ring_dma_ptr));
2239
2240 /* Write TX_CFG_B */
2241 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number));
2242 data &= ~TX_CFG_B_TX_RING_LEN_MASK_;
2243 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_);
2244 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
2245 data |= TX_CFG_B_TDMABL_512_;
2246 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data);
2247
2248 /* Write TX_CFG_A */
2249 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_;
2250 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
2251 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_;
2252 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10);
2253 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04);
2254 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07);
2255 }
2256 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data);
2257
2258 /* Write TX_HEAD_WRITEBACK_ADDR */
2259 lan743x_csr_write(adapter,
2260 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number),
2261 DMA_ADDR_HIGH32(tx->head_dma_ptr));
2262 lan743x_csr_write(adapter,
2263 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number),
2264 DMA_ADDR_LOW32(tx->head_dma_ptr));
2265
2266 /* set last head */
2267 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number));
2268
2269 /* write TX_TAIL */
2270 tx->last_tail = 0;
2271 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
2272 (u32)(tx->last_tail));
2273 tx->vector_flags = lan743x_intr_get_vector_flags(adapter,
2274 INT_BIT_DMA_TX_
2275 (tx->channel_number));
2276 netif_napi_add_tx_weight(adapter->netdev,
2277 &tx->napi, lan743x_tx_napi_poll,
2278 NAPI_POLL_WEIGHT);
2279 napi_enable(&tx->napi);
2280
2281 data = 0;
2282 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
2283 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_;
2284 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
2285 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_;
2286 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
2287 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_;
2288 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
2289 data |= TX_CFG_C_TX_INT_EN_R2C_;
2290 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data);
2291
2292 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET))
2293 lan743x_csr_write(adapter, INT_EN_SET,
2294 INT_BIT_DMA_TX_(tx->channel_number));
2295 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
2296 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
2297
2298 /* start dmac channel */
2299 lan743x_csr_write(adapter, DMAC_CMD,
2300 DMAC_CMD_START_T_(tx->channel_number));
2301 return 0;
2302}
2303
2304static int lan743x_rx_next_index(struct lan743x_rx *rx, int index)
2305{
2306 return ((++index) % rx->ring_size);
2307}
2308
2309static void lan743x_rx_update_tail(struct lan743x_rx *rx, int index)
2310{
2311 /* update the tail once per 8 descriptors */
2312 if ((index & 7) == 7)
2313 lan743x_csr_write(rx->adapter, RX_TAIL(rx->channel_number),
2314 index);
2315}
2316
2317static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index,
2318 gfp_t gfp)
2319{
2320 struct net_device *netdev = rx->adapter->netdev;
2321 struct device *dev = &rx->adapter->pdev->dev;
2322 struct lan743x_rx_buffer_info *buffer_info;
2323 unsigned int buffer_length, used_length;
2324 struct lan743x_rx_descriptor *descriptor;
2325 struct sk_buff *skb;
2326 dma_addr_t dma_ptr;
2327
2328 buffer_length = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + RX_HEAD_PADDING;
2329
2330 descriptor = &rx->ring_cpu_ptr[index];
2331 buffer_info = &rx->buffer_info[index];
2332 skb = __netdev_alloc_skb(netdev, buffer_length, gfp);
2333 if (!skb)
2334 return -ENOMEM;
2335 dma_ptr = dma_map_single(dev, skb->data, buffer_length, DMA_FROM_DEVICE);
2336 if (dma_mapping_error(dev, dma_ptr)) {
2337 dev_kfree_skb_any(skb);
2338 return -ENOMEM;
2339 }
2340 if (buffer_info->dma_ptr) {
2341 /* sync used area of buffer only */
2342 if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_)
2343 /* frame length is valid only if LS bit is set.
2344 * it's a safe upper bound for the used area in this
2345 * buffer.
2346 */
2347 used_length = min(RX_DESC_DATA0_FRAME_LENGTH_GET_
2348 (le32_to_cpu(descriptor->data0)),
2349 buffer_info->buffer_length);
2350 else
2351 used_length = buffer_info->buffer_length;
2352 dma_sync_single_for_cpu(dev, buffer_info->dma_ptr,
2353 used_length,
2354 DMA_FROM_DEVICE);
2355 dma_unmap_single_attrs(dev, buffer_info->dma_ptr,
2356 buffer_info->buffer_length,
2357 DMA_FROM_DEVICE,
2358 DMA_ATTR_SKIP_CPU_SYNC);
2359 }
2360
2361 buffer_info->skb = skb;
2362 buffer_info->dma_ptr = dma_ptr;
2363 buffer_info->buffer_length = buffer_length;
2364 descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr));
2365 descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr));
2366 descriptor->data3 = 0;
2367 descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ |
2368 (buffer_length & RX_DESC_DATA0_BUF_LENGTH_MASK_)));
2369 lan743x_rx_update_tail(rx, index);
2370
2371 return 0;
2372}
2373
2374static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index)
2375{
2376 struct lan743x_rx_buffer_info *buffer_info;
2377 struct lan743x_rx_descriptor *descriptor;
2378
2379 descriptor = &rx->ring_cpu_ptr[index];
2380 buffer_info = &rx->buffer_info[index];
2381
2382 descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr));
2383 descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr));
2384 descriptor->data3 = 0;
2385 descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ |
2386 ((buffer_info->buffer_length) &
2387 RX_DESC_DATA0_BUF_LENGTH_MASK_)));
2388 lan743x_rx_update_tail(rx, index);
2389}
2390
2391static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index)
2392{
2393 struct lan743x_rx_buffer_info *buffer_info;
2394 struct lan743x_rx_descriptor *descriptor;
2395
2396 descriptor = &rx->ring_cpu_ptr[index];
2397 buffer_info = &rx->buffer_info[index];
2398
2399 memset(descriptor, 0, sizeof(*descriptor));
2400
2401 if (buffer_info->dma_ptr) {
2402 dma_unmap_single(&rx->adapter->pdev->dev,
2403 buffer_info->dma_ptr,
2404 buffer_info->buffer_length,
2405 DMA_FROM_DEVICE);
2406 buffer_info->dma_ptr = 0;
2407 }
2408
2409 if (buffer_info->skb) {
2410 dev_kfree_skb(buffer_info->skb);
2411 buffer_info->skb = NULL;
2412 }
2413
2414 memset(buffer_info, 0, sizeof(*buffer_info));
2415}
2416
2417static struct sk_buff *
2418lan743x_rx_trim_skb(struct sk_buff *skb, int frame_length)
2419{
2420 if (skb_linearize(skb)) {
2421 dev_kfree_skb_irq(skb);
2422 return NULL;
2423 }
2424 frame_length = max_t(int, 0, frame_length - ETH_FCS_LEN);
2425 if (skb->len > frame_length) {
2426 skb->tail -= skb->len - frame_length;
2427 skb->len = frame_length;
2428 }
2429 return skb;
2430}
2431
2432static int lan743x_rx_process_buffer(struct lan743x_rx *rx)
2433{
2434 int current_head_index = le32_to_cpu(*rx->head_cpu_ptr);
2435 struct lan743x_rx_descriptor *descriptor, *desc_ext;
2436 struct net_device *netdev = rx->adapter->netdev;
2437 int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
2438 struct lan743x_rx_buffer_info *buffer_info;
2439 int frame_length, buffer_length;
2440 bool is_ice, is_tce, is_icsm;
2441 int extension_index = -1;
2442 bool is_last, is_first;
2443 struct sk_buff *skb;
2444
2445 if (current_head_index < 0 || current_head_index >= rx->ring_size)
2446 goto done;
2447
2448 if (rx->last_head < 0 || rx->last_head >= rx->ring_size)
2449 goto done;
2450
2451 if (rx->last_head == current_head_index)
2452 goto done;
2453
2454 descriptor = &rx->ring_cpu_ptr[rx->last_head];
2455 if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_OWN_)
2456 goto done;
2457 buffer_info = &rx->buffer_info[rx->last_head];
2458
2459 is_last = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_;
2460 is_first = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_FS_;
2461
2462 if (is_last && le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_EXT_) {
2463 /* extension is expected to follow */
2464 int index = lan743x_rx_next_index(rx, rx->last_head);
2465
2466 if (index == current_head_index)
2467 /* extension not yet available */
2468 goto done;
2469 desc_ext = &rx->ring_cpu_ptr[index];
2470 if (le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_OWN_)
2471 /* extension not yet available */
2472 goto done;
2473 if (!(le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_EXT_))
2474 goto move_forward;
2475 extension_index = index;
2476 }
2477
2478 /* Only the last buffer in a multi-buffer frame contains the total frame
2479 * length. The chip occasionally sends more buffers than strictly
2480 * required to reach the total frame length.
2481 * Handle this by adding all buffers to the skb in their entirety.
2482 * Once the real frame length is known, trim the skb.
2483 */
2484 frame_length =
2485 RX_DESC_DATA0_FRAME_LENGTH_GET_(le32_to_cpu(descriptor->data0));
2486 buffer_length = buffer_info->buffer_length;
2487 is_ice = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_ICE_;
2488 is_tce = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_TCE_;
2489 is_icsm = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_ICSM_;
2490
2491 netdev_dbg(netdev, "%s%schunk: %d/%d",
2492 is_first ? "first " : " ",
2493 is_last ? "last " : " ",
2494 frame_length, buffer_length);
2495
2496 /* save existing skb, allocate new skb and map to dma */
2497 skb = buffer_info->skb;
2498 if (lan743x_rx_init_ring_element(rx, rx->last_head,
2499 GFP_ATOMIC | GFP_DMA)) {
2500 /* failed to allocate next skb.
2501 * Memory is very low.
2502 * Drop this packet and reuse buffer.
2503 */
2504 lan743x_rx_reuse_ring_element(rx, rx->last_head);
2505 /* drop packet that was being assembled */
2506 dev_kfree_skb_irq(rx->skb_head);
2507 rx->skb_head = NULL;
2508 goto process_extension;
2509 }
2510
2511 /* add buffers to skb via skb->frag_list */
2512 if (is_first) {
2513 skb_reserve(skb, RX_HEAD_PADDING);
2514 skb_put(skb, buffer_length - RX_HEAD_PADDING);
2515 if (rx->skb_head)
2516 dev_kfree_skb_irq(rx->skb_head);
2517 rx->skb_head = skb;
2518 } else if (rx->skb_head) {
2519 skb_put(skb, buffer_length);
2520 if (skb_shinfo(rx->skb_head)->frag_list)
2521 rx->skb_tail->next = skb;
2522 else
2523 skb_shinfo(rx->skb_head)->frag_list = skb;
2524 rx->skb_tail = skb;
2525 rx->skb_head->len += skb->len;
2526 rx->skb_head->data_len += skb->len;
2527 rx->skb_head->truesize += skb->truesize;
2528 } else {
2529 /* packet to assemble has already been dropped because one or
2530 * more of its buffers could not be allocated
2531 */
2532 netdev_dbg(netdev, "drop buffer intended for dropped packet");
2533 dev_kfree_skb_irq(skb);
2534 }
2535
2536process_extension:
2537 if (extension_index >= 0) {
2538 u32 ts_sec;
2539 u32 ts_nsec;
2540
2541 ts_sec = le32_to_cpu(desc_ext->data1);
2542 ts_nsec = (le32_to_cpu(desc_ext->data2) &
2543 RX_DESC_DATA2_TS_NS_MASK_);
2544 if (rx->skb_head)
2545 skb_hwtstamps(rx->skb_head)->hwtstamp =
2546 ktime_set(ts_sec, ts_nsec);
2547 lan743x_rx_reuse_ring_element(rx, extension_index);
2548 rx->last_head = extension_index;
2549 netdev_dbg(netdev, "process extension");
2550 }
2551
2552 if (is_last && rx->skb_head)
2553 rx->skb_head = lan743x_rx_trim_skb(rx->skb_head, frame_length);
2554
2555 if (is_last && rx->skb_head) {
2556 rx->skb_head->protocol = eth_type_trans(rx->skb_head,
2557 rx->adapter->netdev);
2558 if (rx->adapter->netdev->features & NETIF_F_RXCSUM) {
2559 if (!is_ice && !is_tce && !is_icsm)
2560 skb->ip_summed = CHECKSUM_UNNECESSARY;
2561 }
2562 netdev_dbg(netdev, "sending %d byte frame to OS",
2563 rx->skb_head->len);
2564 napi_gro_receive(&rx->napi, rx->skb_head);
2565 rx->skb_head = NULL;
2566 }
2567
2568move_forward:
2569 /* push tail and head forward */
2570 rx->last_tail = rx->last_head;
2571 rx->last_head = lan743x_rx_next_index(rx, rx->last_head);
2572 result = RX_PROCESS_RESULT_BUFFER_RECEIVED;
2573done:
2574 return result;
2575}
2576
2577static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight)
2578{
2579 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi);
2580 struct lan743x_adapter *adapter = rx->adapter;
2581 int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
2582 u32 rx_tail_flags = 0;
2583 int count;
2584
2585 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) {
2586 /* clear int status bit before reading packet */
2587 lan743x_csr_write(adapter, DMAC_INT_STS,
2588 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2589 }
2590 for (count = 0; count < weight; count++) {
2591 result = lan743x_rx_process_buffer(rx);
2592 if (result == RX_PROCESS_RESULT_NOTHING_TO_DO)
2593 break;
2594 }
2595 rx->frame_count += count;
2596 if (count == weight || result == RX_PROCESS_RESULT_BUFFER_RECEIVED)
2597 return weight;
2598
2599 if (!napi_complete_done(napi, count))
2600 return count;
2601
2602 /* re-arm interrupts, must write to rx tail on some chip variants */
2603 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
2604 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_;
2605 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) {
2606 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_;
2607 } else {
2608 lan743x_csr_write(adapter, INT_EN_SET,
2609 INT_BIT_DMA_RX_(rx->channel_number));
2610 }
2611
2612 if (rx_tail_flags)
2613 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2614 rx_tail_flags | rx->last_tail);
2615
2616 return count;
2617}
2618
2619static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx)
2620{
2621 if (rx->buffer_info && rx->ring_cpu_ptr) {
2622 int index;
2623
2624 for (index = 0; index < rx->ring_size; index++)
2625 lan743x_rx_release_ring_element(rx, index);
2626 }
2627
2628 if (rx->head_cpu_ptr) {
2629 dma_free_coherent(&rx->adapter->pdev->dev,
2630 sizeof(*rx->head_cpu_ptr), rx->head_cpu_ptr,
2631 rx->head_dma_ptr);
2632 rx->head_cpu_ptr = NULL;
2633 rx->head_dma_ptr = 0;
2634 }
2635
2636 kfree(rx->buffer_info);
2637 rx->buffer_info = NULL;
2638
2639 if (rx->ring_cpu_ptr) {
2640 dma_free_coherent(&rx->adapter->pdev->dev,
2641 rx->ring_allocation_size, rx->ring_cpu_ptr,
2642 rx->ring_dma_ptr);
2643 rx->ring_allocation_size = 0;
2644 rx->ring_cpu_ptr = NULL;
2645 rx->ring_dma_ptr = 0;
2646 }
2647
2648 rx->ring_size = 0;
2649 rx->last_head = 0;
2650}
2651
2652static int lan743x_rx_ring_init(struct lan743x_rx *rx)
2653{
2654 size_t ring_allocation_size = 0;
2655 dma_addr_t dma_ptr = 0;
2656 void *cpu_ptr = NULL;
2657 int ret = -ENOMEM;
2658 int index = 0;
2659
2660 rx->ring_size = LAN743X_RX_RING_SIZE;
2661 if (rx->ring_size <= 1) {
2662 ret = -EINVAL;
2663 goto cleanup;
2664 }
2665 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) {
2666 ret = -EINVAL;
2667 goto cleanup;
2668 }
2669 if (dma_set_mask_and_coherent(&rx->adapter->pdev->dev,
2670 DMA_BIT_MASK(64))) {
2671 dev_warn(&rx->adapter->pdev->dev,
2672 "lan743x_: No suitable DMA available\n");
2673 ret = -ENOMEM;
2674 goto cleanup;
2675 }
2676 ring_allocation_size = ALIGN(rx->ring_size *
2677 sizeof(struct lan743x_rx_descriptor),
2678 PAGE_SIZE);
2679 dma_ptr = 0;
2680 cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev,
2681 ring_allocation_size, &dma_ptr, GFP_KERNEL);
2682 if (!cpu_ptr) {
2683 ret = -ENOMEM;
2684 goto cleanup;
2685 }
2686 rx->ring_allocation_size = ring_allocation_size;
2687 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr;
2688 rx->ring_dma_ptr = dma_ptr;
2689
2690 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info),
2691 GFP_KERNEL);
2692 if (!cpu_ptr) {
2693 ret = -ENOMEM;
2694 goto cleanup;
2695 }
2696 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr;
2697 dma_ptr = 0;
2698 cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev,
2699 sizeof(*rx->head_cpu_ptr), &dma_ptr,
2700 GFP_KERNEL);
2701 if (!cpu_ptr) {
2702 ret = -ENOMEM;
2703 goto cleanup;
2704 }
2705
2706 rx->head_cpu_ptr = cpu_ptr;
2707 rx->head_dma_ptr = dma_ptr;
2708 if (rx->head_dma_ptr & 0x3) {
2709 ret = -ENOMEM;
2710 goto cleanup;
2711 }
2712
2713 rx->last_head = 0;
2714 for (index = 0; index < rx->ring_size; index++) {
2715 ret = lan743x_rx_init_ring_element(rx, index, GFP_KERNEL);
2716 if (ret)
2717 goto cleanup;
2718 }
2719 return 0;
2720
2721cleanup:
2722 netif_warn(rx->adapter, ifup, rx->adapter->netdev,
2723 "Error allocating memory for LAN743x\n");
2724
2725 lan743x_rx_ring_cleanup(rx);
2726 return ret;
2727}
2728
2729static void lan743x_rx_close(struct lan743x_rx *rx)
2730{
2731 struct lan743x_adapter *adapter = rx->adapter;
2732
2733 lan743x_csr_write(adapter, FCT_RX_CTL,
2734 FCT_RX_CTL_DIS_(rx->channel_number));
2735 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2736 FCT_RX_CTL_EN_(rx->channel_number),
2737 0, 1000, 20000, 100);
2738
2739 lan743x_csr_write(adapter, DMAC_CMD,
2740 DMAC_CMD_STOP_R_(rx->channel_number));
2741 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number);
2742
2743 lan743x_csr_write(adapter, DMAC_INT_EN_CLR,
2744 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2745 lan743x_csr_write(adapter, INT_EN_CLR,
2746 INT_BIT_DMA_RX_(rx->channel_number));
2747 napi_disable(&rx->napi);
2748
2749 netif_napi_del(&rx->napi);
2750
2751 lan743x_rx_ring_cleanup(rx);
2752}
2753
2754static int lan743x_rx_open(struct lan743x_rx *rx)
2755{
2756 struct lan743x_adapter *adapter = rx->adapter;
2757 u32 data = 0;
2758 int ret;
2759
2760 rx->frame_count = 0;
2761 ret = lan743x_rx_ring_init(rx);
2762 if (ret)
2763 goto return_error;
2764
2765 netif_napi_add(adapter->netdev, &rx->napi, lan743x_rx_napi_poll);
2766
2767 lan743x_csr_write(adapter, DMAC_CMD,
2768 DMAC_CMD_RX_SWR_(rx->channel_number));
2769 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
2770 DMAC_CMD_RX_SWR_(rx->channel_number),
2771 0, 1000, 20000, 100);
2772
2773 /* set ring base address */
2774 lan743x_csr_write(adapter,
2775 RX_BASE_ADDRH(rx->channel_number),
2776 DMA_ADDR_HIGH32(rx->ring_dma_ptr));
2777 lan743x_csr_write(adapter,
2778 RX_BASE_ADDRL(rx->channel_number),
2779 DMA_ADDR_LOW32(rx->ring_dma_ptr));
2780
2781 /* set rx write back address */
2782 lan743x_csr_write(adapter,
2783 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number),
2784 DMA_ADDR_HIGH32(rx->head_dma_ptr));
2785 lan743x_csr_write(adapter,
2786 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number),
2787 DMA_ADDR_LOW32(rx->head_dma_ptr));
2788 data = RX_CFG_A_RX_HP_WB_EN_;
2789 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
2790 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ |
2791 RX_CFG_A_RX_WB_THRES_SET_(0x7) |
2792 RX_CFG_A_RX_PF_THRES_SET_(16) |
2793 RX_CFG_A_RX_PF_PRI_THRES_SET_(4));
2794 }
2795
2796 /* set RX_CFG_A */
2797 lan743x_csr_write(adapter,
2798 RX_CFG_A(rx->channel_number), data);
2799
2800 /* set RX_CFG_B */
2801 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number));
2802 data &= ~RX_CFG_B_RX_PAD_MASK_;
2803 if (!RX_HEAD_PADDING)
2804 data |= RX_CFG_B_RX_PAD_0_;
2805 else
2806 data |= RX_CFG_B_RX_PAD_2_;
2807 data &= ~RX_CFG_B_RX_RING_LEN_MASK_;
2808 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_);
2809 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
2810 data |= RX_CFG_B_RDMABL_512_;
2811
2812 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data);
2813 rx->vector_flags = lan743x_intr_get_vector_flags(adapter,
2814 INT_BIT_DMA_RX_
2815 (rx->channel_number));
2816
2817 /* set RX_CFG_C */
2818 data = 0;
2819 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
2820 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_;
2821 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
2822 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_;
2823 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
2824 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_;
2825 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
2826 data |= RX_CFG_C_RX_INT_EN_R2C_;
2827 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data);
2828
2829 rx->last_tail = ((u32)(rx->ring_size - 1));
2830 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2831 rx->last_tail);
2832 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number));
2833 if (rx->last_head) {
2834 ret = -EIO;
2835 goto napi_delete;
2836 }
2837
2838 napi_enable(&rx->napi);
2839
2840 lan743x_csr_write(adapter, INT_EN_SET,
2841 INT_BIT_DMA_RX_(rx->channel_number));
2842 lan743x_csr_write(adapter, DMAC_INT_STS,
2843 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2844 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
2845 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2846 lan743x_csr_write(adapter, DMAC_CMD,
2847 DMAC_CMD_START_R_(rx->channel_number));
2848
2849 /* initialize fifo */
2850 lan743x_csr_write(adapter, FCT_RX_CTL,
2851 FCT_RX_CTL_RESET_(rx->channel_number));
2852 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2853 FCT_RX_CTL_RESET_(rx->channel_number),
2854 0, 1000, 20000, 100);
2855 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number),
2856 FCT_FLOW_CTL_REQ_EN_ |
2857 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) |
2858 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA));
2859
2860 /* enable fifo */
2861 lan743x_csr_write(adapter, FCT_RX_CTL,
2862 FCT_RX_CTL_EN_(rx->channel_number));
2863 return 0;
2864
2865napi_delete:
2866 netif_napi_del(&rx->napi);
2867 lan743x_rx_ring_cleanup(rx);
2868
2869return_error:
2870 return ret;
2871}
2872
2873static int lan743x_phylink_sgmii_config(struct lan743x_adapter *adapter)
2874{
2875 u32 sgmii_ctl;
2876 int ret;
2877
2878 ret = lan743x_get_lsd(SPEED_1000, DUPLEX_FULL,
2879 MASTER_SLAVE_STATE_MASTER);
2880 if (ret < 0) {
2881 netif_err(adapter, drv, adapter->netdev,
2882 "error %d link-speed-duplex(LSD) invalid\n", ret);
2883 return ret;
2884 }
2885
2886 adapter->sgmii_lsd = ret;
2887 netif_dbg(adapter, drv, adapter->netdev,
2888 "Link Speed Duplex (lsd) : 0x%X\n", adapter->sgmii_lsd);
2889
2890 /* LINK_STATUS_SOURCE from the External PHY via SGMII */
2891 sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL);
2892 sgmii_ctl &= ~SGMII_CTL_LINK_STATUS_SOURCE_;
2893 lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl);
2894
2895 ret = lan743x_serdes_clock_and_aneg_update(adapter);
2896 if (ret < 0) {
2897 netif_err(adapter, drv, adapter->netdev,
2898 "error %d sgmii aneg update failed\n", ret);
2899 return ret;
2900 }
2901
2902 return lan743x_pcs_power_reset(adapter);
2903}
2904
2905static int lan743x_phylink_1000basex_config(struct lan743x_adapter *adapter)
2906{
2907 u32 sgmii_ctl;
2908 int ret;
2909
2910 ret = lan743x_get_lsd(SPEED_1000, DUPLEX_FULL,
2911 MASTER_SLAVE_STATE_MASTER);
2912 if (ret < 0) {
2913 netif_err(adapter, drv, adapter->netdev,
2914 "error %d link-speed-duplex(LSD) invalid\n", ret);
2915 return ret;
2916 }
2917
2918 adapter->sgmii_lsd = ret;
2919 netif_dbg(adapter, drv, adapter->netdev,
2920 "Link Speed Duplex (lsd) : 0x%X\n", adapter->sgmii_lsd);
2921
2922 /* LINK_STATUS_SOURCE from 1000BASE-X PCS link status */
2923 sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL);
2924 sgmii_ctl |= SGMII_CTL_LINK_STATUS_SOURCE_;
2925 lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl);
2926
2927 ret = lan743x_serdes_clock_and_aneg_update(adapter);
2928 if (ret < 0) {
2929 netif_err(adapter, drv, adapter->netdev,
2930 "error %d 1000basex aneg update failed\n", ret);
2931 return ret;
2932 }
2933
2934 return lan743x_pcs_power_reset(adapter);
2935}
2936
2937static int lan743x_phylink_2500basex_config(struct lan743x_adapter *adapter)
2938{
2939 u32 sgmii_ctl;
2940 int ret;
2941
2942 ret = lan743x_get_lsd(SPEED_2500, DUPLEX_FULL,
2943 MASTER_SLAVE_STATE_MASTER);
2944 if (ret < 0) {
2945 netif_err(adapter, drv, adapter->netdev,
2946 "error %d link-speed-duplex(LSD) invalid\n", ret);
2947 return ret;
2948 }
2949
2950 adapter->sgmii_lsd = ret;
2951 netif_dbg(adapter, drv, adapter->netdev,
2952 "Link Speed Duplex (lsd) : 0x%X\n", adapter->sgmii_lsd);
2953
2954 /* LINK_STATUS_SOURCE from 2500BASE-X PCS link status */
2955 sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL);
2956 sgmii_ctl |= SGMII_CTL_LINK_STATUS_SOURCE_;
2957 lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl);
2958
2959 ret = lan743x_serdes_clock_and_aneg_update(adapter);
2960 if (ret < 0) {
2961 netif_err(adapter, drv, adapter->netdev,
2962 "error %d 2500basex aneg update failed\n", ret);
2963 return ret;
2964 }
2965
2966 return lan743x_pcs_power_reset(adapter);
2967}
2968
2969void lan743x_mac_eee_enable(struct lan743x_adapter *adapter, bool enable)
2970{
2971 u32 mac_cr;
2972
2973 mac_cr = lan743x_csr_read(adapter, MAC_CR);
2974 if (enable)
2975 mac_cr |= MAC_CR_EEE_EN_;
2976 else
2977 mac_cr &= ~MAC_CR_EEE_EN_;
2978 lan743x_csr_write(adapter, MAC_CR, mac_cr);
2979}
2980
2981static void lan743x_phylink_mac_config(struct phylink_config *config,
2982 unsigned int link_an_mode,
2983 const struct phylink_link_state *state)
2984{
2985 struct net_device *netdev = to_net_dev(config->dev);
2986 struct lan743x_adapter *adapter = netdev_priv(netdev);
2987 int ret;
2988
2989 switch (state->interface) {
2990 case PHY_INTERFACE_MODE_2500BASEX:
2991 ret = lan743x_phylink_2500basex_config(adapter);
2992 if (ret < 0)
2993 netif_err(adapter, drv, adapter->netdev,
2994 "2500BASEX config failed. Error %d\n", ret);
2995 else
2996 netif_dbg(adapter, drv, adapter->netdev,
2997 "2500BASEX mode selected and configured\n");
2998 break;
2999 case PHY_INTERFACE_MODE_1000BASEX:
3000 ret = lan743x_phylink_1000basex_config(adapter);
3001 if (ret < 0)
3002 netif_err(adapter, drv, adapter->netdev,
3003 "1000BASEX config failed. Error %d\n", ret);
3004 else
3005 netif_dbg(adapter, drv, adapter->netdev,
3006 "1000BASEX mode selected and configured\n");
3007 break;
3008 case PHY_INTERFACE_MODE_SGMII:
3009 ret = lan743x_phylink_sgmii_config(adapter);
3010 if (ret < 0)
3011 netif_err(adapter, drv, adapter->netdev,
3012 "SGMII config failed. Error %d\n", ret);
3013 else
3014 netif_dbg(adapter, drv, adapter->netdev,
3015 "SGMII mode selected and configured\n");
3016 break;
3017 default:
3018 netif_dbg(adapter, drv, adapter->netdev,
3019 "RGMII/GMII/MII(0x%X) mode enable\n",
3020 state->interface);
3021 break;
3022 }
3023}
3024
3025static void lan743x_phylink_mac_link_down(struct phylink_config *config,
3026 unsigned int link_an_mode,
3027 phy_interface_t interface)
3028{
3029 struct net_device *netdev = to_net_dev(config->dev);
3030 struct lan743x_adapter *adapter = netdev_priv(netdev);
3031
3032 netif_tx_stop_all_queues(to_net_dev(config->dev));
3033 lan743x_mac_eee_enable(adapter, false);
3034}
3035
3036static void lan743x_phylink_mac_link_up(struct phylink_config *config,
3037 struct phy_device *phydev,
3038 unsigned int link_an_mode,
3039 phy_interface_t interface,
3040 int speed, int duplex,
3041 bool tx_pause, bool rx_pause)
3042{
3043 struct net_device *netdev = to_net_dev(config->dev);
3044 struct lan743x_adapter *adapter = netdev_priv(netdev);
3045 int mac_cr;
3046 u8 cap;
3047
3048 mac_cr = lan743x_csr_read(adapter, MAC_CR);
3049 /* Pre-initialize register bits.
3050 * Resulting value corresponds to SPEED_10
3051 */
3052 mac_cr &= ~(MAC_CR_CFG_H_ | MAC_CR_CFG_L_);
3053 if (speed == SPEED_2500)
3054 mac_cr |= MAC_CR_CFG_H_ | MAC_CR_CFG_L_;
3055 else if (speed == SPEED_1000)
3056 mac_cr |= MAC_CR_CFG_H_;
3057 else if (speed == SPEED_100)
3058 mac_cr |= MAC_CR_CFG_L_;
3059
3060 lan743x_csr_write(adapter, MAC_CR, mac_cr);
3061
3062 lan743x_ptp_update_latency(adapter, speed);
3063
3064 /* Flow Control operation */
3065 cap = 0;
3066 if (tx_pause)
3067 cap |= FLOW_CTRL_TX;
3068 if (rx_pause)
3069 cap |= FLOW_CTRL_RX;
3070
3071 lan743x_mac_flow_ctrl_set_enables(adapter,
3072 cap & FLOW_CTRL_TX,
3073 cap & FLOW_CTRL_RX);
3074
3075 if (phydev)
3076 lan743x_mac_eee_enable(adapter, phydev->enable_tx_lpi);
3077
3078 netif_tx_wake_all_queues(netdev);
3079}
3080
3081static const struct phylink_mac_ops lan743x_phylink_mac_ops = {
3082 .mac_config = lan743x_phylink_mac_config,
3083 .mac_link_down = lan743x_phylink_mac_link_down,
3084 .mac_link_up = lan743x_phylink_mac_link_up,
3085};
3086
3087static int lan743x_phylink_create(struct lan743x_adapter *adapter)
3088{
3089 struct net_device *netdev = adapter->netdev;
3090 struct phylink *pl;
3091
3092 adapter->phylink_config.dev = &netdev->dev;
3093 adapter->phylink_config.type = PHYLINK_NETDEV;
3094 adapter->phylink_config.mac_managed_pm = false;
3095
3096 adapter->phylink_config.mac_capabilities = MAC_ASYM_PAUSE |
3097 MAC_SYM_PAUSE | MAC_10 | MAC_100 | MAC_1000FD;
3098
3099 lan743x_phy_interface_select(adapter);
3100
3101 switch (adapter->phy_interface) {
3102 case PHY_INTERFACE_MODE_SGMII:
3103 __set_bit(PHY_INTERFACE_MODE_SGMII,
3104 adapter->phylink_config.supported_interfaces);
3105 __set_bit(PHY_INTERFACE_MODE_1000BASEX,
3106 adapter->phylink_config.supported_interfaces);
3107 __set_bit(PHY_INTERFACE_MODE_2500BASEX,
3108 adapter->phylink_config.supported_interfaces);
3109 adapter->phylink_config.mac_capabilities |= MAC_2500FD;
3110 break;
3111 case PHY_INTERFACE_MODE_GMII:
3112 __set_bit(PHY_INTERFACE_MODE_GMII,
3113 adapter->phylink_config.supported_interfaces);
3114 break;
3115 case PHY_INTERFACE_MODE_MII:
3116 __set_bit(PHY_INTERFACE_MODE_MII,
3117 adapter->phylink_config.supported_interfaces);
3118 break;
3119 default:
3120 phy_interface_set_rgmii(adapter->phylink_config.supported_interfaces);
3121 }
3122
3123 pl = phylink_create(&adapter->phylink_config, NULL,
3124 adapter->phy_interface, &lan743x_phylink_mac_ops);
3125
3126 if (IS_ERR(pl)) {
3127 netdev_err(netdev, "Could not create phylink (%pe)\n", pl);
3128 return PTR_ERR(pl);
3129 }
3130
3131 adapter->phylink = pl;
3132 netdev_dbg(netdev, "lan743x phylink created");
3133
3134 return 0;
3135}
3136
3137static bool lan743x_phy_handle_exists(struct device_node *dn)
3138{
3139 dn = of_parse_phandle(dn, "phy-handle", 0);
3140 of_node_put(dn);
3141 return dn != NULL;
3142}
3143
3144static int lan743x_phylink_connect(struct lan743x_adapter *adapter)
3145{
3146 struct device_node *dn = adapter->pdev->dev.of_node;
3147 struct net_device *dev = adapter->netdev;
3148 struct phy_device *phydev;
3149 int ret;
3150
3151 if (dn)
3152 ret = phylink_of_phy_connect(adapter->phylink, dn, 0);
3153
3154 if (!dn || (ret && !lan743x_phy_handle_exists(dn))) {
3155 phydev = phy_find_first(adapter->mdiobus);
3156 if (phydev) {
3157 /* attach the mac to the phy */
3158 ret = phylink_connect_phy(adapter->phylink, phydev);
3159 } else if (((adapter->csr.id_rev & ID_REV_ID_MASK_) ==
3160 ID_REV_ID_LAN7431_) || adapter->is_pci11x1x) {
3161 struct phylink_link_state state;
3162 unsigned long caps;
3163
3164 caps = adapter->phylink_config.mac_capabilities;
3165 if (caps & MAC_2500FD) {
3166 state.speed = SPEED_2500;
3167 state.duplex = DUPLEX_FULL;
3168 } else if (caps & MAC_1000FD) {
3169 state.speed = SPEED_1000;
3170 state.duplex = DUPLEX_FULL;
3171 } else {
3172 state.speed = SPEED_UNKNOWN;
3173 state.duplex = DUPLEX_UNKNOWN;
3174 }
3175
3176 ret = phylink_set_fixed_link(adapter->phylink, &state);
3177 if (ret) {
3178 netdev_err(dev, "Could not set fixed link\n");
3179 return ret;
3180 }
3181 } else {
3182 netdev_err(dev, "no PHY found\n");
3183 return -ENXIO;
3184 }
3185 }
3186
3187 if (ret) {
3188 netdev_err(dev, "Could not attach PHY (%d)\n", ret);
3189 return ret;
3190 }
3191
3192 phylink_start(adapter->phylink);
3193
3194 return 0;
3195}
3196
3197static void lan743x_phylink_disconnect(struct lan743x_adapter *adapter)
3198{
3199 phylink_stop(adapter->phylink);
3200 phylink_disconnect_phy(adapter->phylink);
3201}
3202
3203static int lan743x_netdev_close(struct net_device *netdev)
3204{
3205 struct lan743x_adapter *adapter = netdev_priv(netdev);
3206 int index;
3207
3208 for (index = 0; index < adapter->used_tx_channels; index++)
3209 lan743x_tx_close(&adapter->tx[index]);
3210
3211 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++)
3212 lan743x_rx_close(&adapter->rx[index]);
3213
3214 lan743x_ptp_close(adapter);
3215
3216 lan743x_phylink_disconnect(adapter);
3217
3218 lan743x_mac_close(adapter);
3219
3220 lan743x_intr_close(adapter);
3221
3222 return 0;
3223}
3224
3225static int lan743x_netdev_open(struct net_device *netdev)
3226{
3227 struct lan743x_adapter *adapter = netdev_priv(netdev);
3228 int index;
3229 int ret;
3230
3231 ret = lan743x_intr_open(adapter);
3232 if (ret)
3233 goto return_error;
3234
3235 ret = lan743x_mac_open(adapter);
3236 if (ret)
3237 goto close_intr;
3238
3239 ret = lan743x_phylink_connect(adapter);
3240 if (ret)
3241 goto close_mac;
3242
3243 ret = lan743x_ptp_open(adapter);
3244 if (ret)
3245 goto close_mac;
3246
3247 lan743x_rfe_open(adapter);
3248
3249 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
3250 ret = lan743x_rx_open(&adapter->rx[index]);
3251 if (ret)
3252 goto close_rx;
3253 }
3254
3255 for (index = 0; index < adapter->used_tx_channels; index++) {
3256 ret = lan743x_tx_open(&adapter->tx[index]);
3257 if (ret)
3258 goto close_tx;
3259 }
3260
3261 if (netdev->phydev)
3262 phy_support_eee(netdev->phydev);
3263
3264#ifdef CONFIG_PM
3265 if (adapter->netdev->phydev) {
3266 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
3267
3268 phy_ethtool_get_wol(netdev->phydev, &wol);
3269 adapter->phy_wol_supported = wol.supported;
3270 adapter->phy_wolopts = wol.wolopts;
3271 }
3272#endif
3273
3274 return 0;
3275
3276close_tx:
3277 for (index = 0; index < adapter->used_tx_channels; index++) {
3278 if (adapter->tx[index].ring_cpu_ptr)
3279 lan743x_tx_close(&adapter->tx[index]);
3280 }
3281
3282close_rx:
3283 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
3284 if (adapter->rx[index].ring_cpu_ptr)
3285 lan743x_rx_close(&adapter->rx[index]);
3286 }
3287 lan743x_ptp_close(adapter);
3288 if (adapter->phylink)
3289 lan743x_phylink_disconnect(adapter);
3290
3291close_mac:
3292 lan743x_mac_close(adapter);
3293
3294close_intr:
3295 lan743x_intr_close(adapter);
3296
3297return_error:
3298 netif_warn(adapter, ifup, adapter->netdev,
3299 "Error opening LAN743x\n");
3300 return ret;
3301}
3302
3303static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb,
3304 struct net_device *netdev)
3305{
3306 struct lan743x_adapter *adapter = netdev_priv(netdev);
3307 u8 ch = 0;
3308
3309 if (adapter->is_pci11x1x)
3310 ch = skb->queue_mapping % PCI11X1X_USED_TX_CHANNELS;
3311
3312 return lan743x_tx_xmit_frame(&adapter->tx[ch], skb);
3313}
3314
3315static int lan743x_netdev_ioctl(struct net_device *netdev,
3316 struct ifreq *ifr, int cmd)
3317{
3318 struct lan743x_adapter *adapter = netdev_priv(netdev);
3319
3320 if (!netif_running(netdev))
3321 return -EINVAL;
3322 if (cmd == SIOCSHWTSTAMP)
3323 return lan743x_ptp_ioctl(netdev, ifr, cmd);
3324
3325 return phylink_mii_ioctl(adapter->phylink, ifr, cmd);
3326}
3327
3328static void lan743x_netdev_set_multicast(struct net_device *netdev)
3329{
3330 struct lan743x_adapter *adapter = netdev_priv(netdev);
3331
3332 lan743x_rfe_set_multicast(adapter);
3333}
3334
3335static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu)
3336{
3337 struct lan743x_adapter *adapter = netdev_priv(netdev);
3338 int ret = 0;
3339
3340 ret = lan743x_mac_set_mtu(adapter, new_mtu);
3341 if (!ret)
3342 WRITE_ONCE(netdev->mtu, new_mtu);
3343 return ret;
3344}
3345
3346static void lan743x_netdev_get_stats64(struct net_device *netdev,
3347 struct rtnl_link_stats64 *stats)
3348{
3349 struct lan743x_adapter *adapter = netdev_priv(netdev);
3350
3351 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES);
3352 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES);
3353 stats->rx_bytes = lan743x_csr_read(adapter,
3354 STAT_RX_UNICAST_BYTE_COUNT) +
3355 lan743x_csr_read(adapter,
3356 STAT_RX_BROADCAST_BYTE_COUNT) +
3357 lan743x_csr_read(adapter,
3358 STAT_RX_MULTICAST_BYTE_COUNT);
3359 stats->tx_bytes = lan743x_csr_read(adapter,
3360 STAT_TX_UNICAST_BYTE_COUNT) +
3361 lan743x_csr_read(adapter,
3362 STAT_TX_BROADCAST_BYTE_COUNT) +
3363 lan743x_csr_read(adapter,
3364 STAT_TX_MULTICAST_BYTE_COUNT);
3365 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) +
3366 lan743x_csr_read(adapter,
3367 STAT_RX_ALIGNMENT_ERRORS) +
3368 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) +
3369 lan743x_csr_read(adapter,
3370 STAT_RX_UNDERSIZE_FRAME_ERRORS) +
3371 lan743x_csr_read(adapter,
3372 STAT_RX_OVERSIZE_FRAME_ERRORS);
3373 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) +
3374 lan743x_csr_read(adapter,
3375 STAT_TX_EXCESS_DEFERRAL_ERRORS) +
3376 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS);
3377 stats->rx_dropped = lan743x_csr_read(adapter,
3378 STAT_RX_DROPPED_FRAMES);
3379 stats->tx_dropped = lan743x_csr_read(adapter,
3380 STAT_TX_EXCESSIVE_COLLISION);
3381 stats->multicast = lan743x_csr_read(adapter,
3382 STAT_RX_MULTICAST_FRAMES) +
3383 lan743x_csr_read(adapter,
3384 STAT_TX_MULTICAST_FRAMES);
3385 stats->collisions = lan743x_csr_read(adapter,
3386 STAT_TX_SINGLE_COLLISIONS) +
3387 lan743x_csr_read(adapter,
3388 STAT_TX_MULTIPLE_COLLISIONS) +
3389 lan743x_csr_read(adapter,
3390 STAT_TX_LATE_COLLISIONS);
3391}
3392
3393static int lan743x_netdev_set_mac_address(struct net_device *netdev,
3394 void *addr)
3395{
3396 struct lan743x_adapter *adapter = netdev_priv(netdev);
3397 struct sockaddr *sock_addr = addr;
3398 int ret;
3399
3400 ret = eth_prepare_mac_addr_change(netdev, sock_addr);
3401 if (ret)
3402 return ret;
3403 eth_hw_addr_set(netdev, sock_addr->sa_data);
3404 lan743x_mac_set_address(adapter, sock_addr->sa_data);
3405 lan743x_rfe_update_mac_address(adapter);
3406 return 0;
3407}
3408
3409static const struct net_device_ops lan743x_netdev_ops = {
3410 .ndo_open = lan743x_netdev_open,
3411 .ndo_stop = lan743x_netdev_close,
3412 .ndo_start_xmit = lan743x_netdev_xmit_frame,
3413 .ndo_eth_ioctl = lan743x_netdev_ioctl,
3414 .ndo_set_rx_mode = lan743x_netdev_set_multicast,
3415 .ndo_change_mtu = lan743x_netdev_change_mtu,
3416 .ndo_get_stats64 = lan743x_netdev_get_stats64,
3417 .ndo_set_mac_address = lan743x_netdev_set_mac_address,
3418};
3419
3420static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter)
3421{
3422 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
3423}
3424
3425static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter)
3426{
3427 mdiobus_unregister(adapter->mdiobus);
3428}
3429
3430static void lan743x_destroy_phylink(struct lan743x_adapter *adapter)
3431{
3432 phylink_destroy(adapter->phylink);
3433 adapter->phylink = NULL;
3434}
3435
3436static void lan743x_full_cleanup(struct lan743x_adapter *adapter)
3437{
3438 unregister_netdev(adapter->netdev);
3439
3440 lan743x_destroy_phylink(adapter);
3441 lan743x_mdiobus_cleanup(adapter);
3442 lan743x_hardware_cleanup(adapter);
3443 lan743x_pci_cleanup(adapter);
3444}
3445
3446static void pci11x1x_set_rfe_rd_fifo_threshold(struct lan743x_adapter *adapter)
3447{
3448 u16 rev = adapter->csr.id_rev & ID_REV_CHIP_REV_MASK_;
3449
3450 if (rev == ID_REV_CHIP_REV_PCI11X1X_B0_) {
3451 u32 misc_ctl;
3452
3453 misc_ctl = lan743x_csr_read(adapter, MISC_CTL_0);
3454 misc_ctl &= ~MISC_CTL_0_RFE_READ_FIFO_MASK_;
3455 misc_ctl |= FIELD_PREP(MISC_CTL_0_RFE_READ_FIFO_MASK_,
3456 RFE_RD_FIFO_TH_3_DWORDS);
3457 lan743x_csr_write(adapter, MISC_CTL_0, misc_ctl);
3458 }
3459}
3460
3461static int lan743x_hardware_init(struct lan743x_adapter *adapter,
3462 struct pci_dev *pdev)
3463{
3464 struct lan743x_tx *tx;
3465 int index;
3466 int ret;
3467
3468 adapter->is_pci11x1x = is_pci11x1x_chip(adapter);
3469 if (adapter->is_pci11x1x) {
3470 adapter->max_tx_channels = PCI11X1X_MAX_TX_CHANNELS;
3471 adapter->used_tx_channels = PCI11X1X_USED_TX_CHANNELS;
3472 adapter->max_vector_count = PCI11X1X_MAX_VECTOR_COUNT;
3473 pci11x1x_strap_get_status(adapter);
3474 spin_lock_init(&adapter->eth_syslock_spinlock);
3475 mutex_init(&adapter->sgmii_rw_lock);
3476 pci11x1x_set_rfe_rd_fifo_threshold(adapter);
3477 } else {
3478 adapter->max_tx_channels = LAN743X_MAX_TX_CHANNELS;
3479 adapter->used_tx_channels = LAN743X_USED_TX_CHANNELS;
3480 adapter->max_vector_count = LAN743X_MAX_VECTOR_COUNT;
3481 }
3482
3483 adapter->intr.irq = adapter->pdev->irq;
3484 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
3485
3486 ret = lan743x_gpio_init(adapter);
3487 if (ret)
3488 return ret;
3489
3490 ret = lan743x_mac_init(adapter);
3491 if (ret)
3492 return ret;
3493
3494 ret = lan743x_phy_init(adapter);
3495 if (ret)
3496 return ret;
3497
3498 ret = lan743x_ptp_init(adapter);
3499 if (ret)
3500 return ret;
3501
3502 lan743x_rfe_update_mac_address(adapter);
3503
3504 ret = lan743x_dmac_init(adapter);
3505 if (ret)
3506 return ret;
3507
3508 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
3509 adapter->rx[index].adapter = adapter;
3510 adapter->rx[index].channel_number = index;
3511 }
3512
3513 for (index = 0; index < adapter->used_tx_channels; index++) {
3514 tx = &adapter->tx[index];
3515 tx->adapter = adapter;
3516 tx->channel_number = index;
3517 spin_lock_init(&tx->ring_lock);
3518 }
3519
3520 return 0;
3521}
3522
3523static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
3524{
3525 u32 sgmii_ctl;
3526 int ret;
3527
3528 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev);
3529 if (!(adapter->mdiobus)) {
3530 ret = -ENOMEM;
3531 goto return_error;
3532 }
3533
3534 adapter->mdiobus->priv = (void *)adapter;
3535 if (adapter->is_pci11x1x) {
3536 if (adapter->is_sgmii_en) {
3537 sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL);
3538 sgmii_ctl |= SGMII_CTL_SGMII_ENABLE_;
3539 sgmii_ctl &= ~SGMII_CTL_SGMII_POWER_DN_;
3540 lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl);
3541 netif_dbg(adapter, drv, adapter->netdev,
3542 "SGMII operation\n");
3543 adapter->mdiobus->read = lan743x_mdiobus_read_c22;
3544 adapter->mdiobus->write = lan743x_mdiobus_write_c22;
3545 adapter->mdiobus->read_c45 = lan743x_mdiobus_read_c45;
3546 adapter->mdiobus->write_c45 = lan743x_mdiobus_write_c45;
3547 adapter->mdiobus->name = "lan743x-mdiobus-c45";
3548 netif_dbg(adapter, drv, adapter->netdev,
3549 "lan743x-mdiobus-c45\n");
3550 } else {
3551 sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL);
3552 sgmii_ctl &= ~SGMII_CTL_SGMII_ENABLE_;
3553 sgmii_ctl |= SGMII_CTL_SGMII_POWER_DN_;
3554 lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl);
3555 netif_dbg(adapter, drv, adapter->netdev,
3556 "RGMII operation\n");
3557 // Only C22 support when RGMII I/F
3558 adapter->mdiobus->read = lan743x_mdiobus_read_c22;
3559 adapter->mdiobus->write = lan743x_mdiobus_write_c22;
3560 adapter->mdiobus->name = "lan743x-mdiobus";
3561 netif_dbg(adapter, drv, adapter->netdev,
3562 "lan743x-mdiobus\n");
3563 }
3564 } else {
3565 adapter->mdiobus->read = lan743x_mdiobus_read_c22;
3566 adapter->mdiobus->write = lan743x_mdiobus_write_c22;
3567 adapter->mdiobus->name = "lan743x-mdiobus";
3568 netif_dbg(adapter, drv, adapter->netdev, "lan743x-mdiobus\n");
3569 }
3570
3571 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE,
3572 "pci-%s", pci_name(adapter->pdev));
3573
3574 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_)
3575 /* LAN7430 uses internal phy at address 1 */
3576 adapter->mdiobus->phy_mask = ~(u32)BIT(1);
3577
3578 /* register mdiobus */
3579 ret = mdiobus_register(adapter->mdiobus);
3580 if (ret < 0)
3581 goto return_error;
3582 return 0;
3583
3584return_error:
3585 return ret;
3586}
3587
3588/* lan743x_pcidev_probe - Device Initialization Routine
3589 * @pdev: PCI device information struct
3590 * @id: entry in lan743x_pci_tbl
3591 *
3592 * Returns 0 on success, negative on failure
3593 *
3594 * initializes an adapter identified by a pci_dev structure.
3595 * The OS initialization, configuring of the adapter private structure,
3596 * and a hardware reset occur.
3597 **/
3598static int lan743x_pcidev_probe(struct pci_dev *pdev,
3599 const struct pci_device_id *id)
3600{
3601 struct lan743x_adapter *adapter = NULL;
3602 struct net_device *netdev = NULL;
3603 int ret = -ENODEV;
3604
3605 if (id->device == PCI_DEVICE_ID_SMSC_A011 ||
3606 id->device == PCI_DEVICE_ID_SMSC_A041) {
3607 netdev = devm_alloc_etherdev_mqs(&pdev->dev,
3608 sizeof(struct lan743x_adapter),
3609 PCI11X1X_USED_TX_CHANNELS,
3610 LAN743X_USED_RX_CHANNELS);
3611 } else {
3612 netdev = devm_alloc_etherdev_mqs(&pdev->dev,
3613 sizeof(struct lan743x_adapter),
3614 LAN743X_USED_TX_CHANNELS,
3615 LAN743X_USED_RX_CHANNELS);
3616 }
3617
3618 if (!netdev)
3619 goto return_error;
3620
3621 SET_NETDEV_DEV(netdev, &pdev->dev);
3622 pci_set_drvdata(pdev, netdev);
3623 adapter = netdev_priv(netdev);
3624 adapter->netdev = netdev;
3625 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE |
3626 NETIF_MSG_LINK | NETIF_MSG_IFUP |
3627 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED;
3628 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
3629
3630 of_get_mac_address(pdev->dev.of_node, adapter->mac_address);
3631
3632 ret = lan743x_pci_init(adapter, pdev);
3633 if (ret)
3634 goto return_error;
3635
3636 ret = lan743x_csr_init(adapter);
3637 if (ret)
3638 goto cleanup_pci;
3639
3640 ret = lan743x_hardware_init(adapter, pdev);
3641 if (ret)
3642 goto cleanup_pci;
3643
3644 ret = lan743x_mdiobus_init(adapter);
3645 if (ret)
3646 goto cleanup_hardware;
3647
3648 adapter->netdev->netdev_ops = &lan743x_netdev_ops;
3649 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops;
3650 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO |
3651 NETIF_F_HW_CSUM | NETIF_F_RXCSUM;
3652 adapter->netdev->hw_features = adapter->netdev->features;
3653
3654 ret = lan743x_phylink_create(adapter);
3655 if (ret < 0) {
3656 netif_err(adapter, probe, netdev,
3657 "failed to setup phylink (%d)\n", ret);
3658 goto cleanup_mdiobus;
3659 }
3660
3661 ret = register_netdev(adapter->netdev);
3662 if (ret < 0)
3663 goto cleanup_phylink;
3664 return 0;
3665
3666cleanup_phylink:
3667 lan743x_destroy_phylink(adapter);
3668
3669cleanup_mdiobus:
3670 lan743x_mdiobus_cleanup(adapter);
3671
3672cleanup_hardware:
3673 lan743x_hardware_cleanup(adapter);
3674
3675cleanup_pci:
3676 lan743x_pci_cleanup(adapter);
3677
3678return_error:
3679 pr_warn("Initialization failed\n");
3680 return ret;
3681}
3682
3683/**
3684 * lan743x_pcidev_remove - Device Removal Routine
3685 * @pdev: PCI device information struct
3686 *
3687 * this is called by the PCI subsystem to alert the driver
3688 * that it should release a PCI device. This could be caused by a
3689 * Hot-Plug event, or because the driver is going to be removed from
3690 * memory.
3691 **/
3692static void lan743x_pcidev_remove(struct pci_dev *pdev)
3693{
3694 struct net_device *netdev = pci_get_drvdata(pdev);
3695 struct lan743x_adapter *adapter = netdev_priv(netdev);
3696
3697 lan743x_full_cleanup(adapter);
3698}
3699
3700static void lan743x_pcidev_shutdown(struct pci_dev *pdev)
3701{
3702 struct net_device *netdev = pci_get_drvdata(pdev);
3703 struct lan743x_adapter *adapter = netdev_priv(netdev);
3704
3705 rtnl_lock();
3706 netif_device_detach(netdev);
3707
3708 /* close netdev when netdev is at running state.
3709 * For instance, it is true when system goes to sleep by pm-suspend
3710 * However, it is false when system goes to sleep by suspend GUI menu
3711 */
3712 if (netif_running(netdev))
3713 lan743x_netdev_close(netdev);
3714 rtnl_unlock();
3715
3716#ifdef CONFIG_PM
3717 pci_save_state(pdev);
3718#endif
3719
3720 /* clean up lan743x portion */
3721 lan743x_hardware_cleanup(adapter);
3722}
3723
3724#ifdef CONFIG_PM_SLEEP
3725static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len)
3726{
3727 return bitrev16(crc16(0xFFFF, buf, len));
3728}
3729
3730static void lan743x_pm_set_wol(struct lan743x_adapter *adapter)
3731{
3732 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
3733 const u8 ipv6_multicast[3] = { 0x33, 0x33 };
3734 const u8 arp_type[2] = { 0x08, 0x06 };
3735 int mask_index;
3736 u32 sopass;
3737 u32 pmtctl;
3738 u32 wucsr;
3739 u32 macrx;
3740 u16 crc;
3741
3742 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++)
3743 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0);
3744
3745 /* clear wake settings */
3746 pmtctl = lan743x_csr_read(adapter, PMT_CTL);
3747 pmtctl |= PMT_CTL_WUPS_MASK_ | PMT_CTL_RES_CLR_WKP_MASK_;
3748 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ |
3749 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ |
3750 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_);
3751
3752 macrx = lan743x_csr_read(adapter, MAC_RX);
3753
3754 wucsr = 0;
3755 mask_index = 0;
3756
3757 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_;
3758
3759 if (adapter->phy_wolopts)
3760 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_;
3761
3762 if (adapter->wolopts & WAKE_MAGIC) {
3763 wucsr |= MAC_WUCSR_MPEN_;
3764 macrx |= MAC_RX_RXEN_;
3765 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3766 }
3767 if (adapter->wolopts & WAKE_UCAST) {
3768 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_;
3769 macrx |= MAC_RX_RXEN_;
3770 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3771 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
3772 }
3773 if (adapter->wolopts & WAKE_BCAST) {
3774 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_;
3775 macrx |= MAC_RX_RXEN_;
3776 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3777 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
3778 }
3779 if (adapter->wolopts & WAKE_MCAST) {
3780 /* IPv4 multicast */
3781 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3);
3782 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
3783 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
3784 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
3785 (crc & MAC_WUF_CFG_CRC16_MASK_));
3786 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7);
3787 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
3788 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
3789 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
3790 mask_index++;
3791
3792 /* IPv6 multicast */
3793 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2);
3794 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
3795 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
3796 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
3797 (crc & MAC_WUF_CFG_CRC16_MASK_));
3798 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3);
3799 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
3800 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
3801 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
3802 mask_index++;
3803
3804 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
3805 macrx |= MAC_RX_RXEN_;
3806 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3807 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
3808 }
3809 if (adapter->wolopts & WAKE_ARP) {
3810 /* set MAC_WUF_CFG & WUF_MASK
3811 * for packettype (offset 12,13) = ARP (0x0806)
3812 */
3813 crc = lan743x_pm_wakeframe_crc16(arp_type, 2);
3814 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
3815 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ |
3816 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
3817 (crc & MAC_WUF_CFG_CRC16_MASK_));
3818 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000);
3819 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
3820 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
3821 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
3822 mask_index++;
3823
3824 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
3825 macrx |= MAC_RX_RXEN_;
3826 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3827 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
3828 }
3829
3830 if (adapter->wolopts & WAKE_MAGICSECURE) {
3831 sopass = *(u32 *)adapter->sopass;
3832 lan743x_csr_write(adapter, MAC_MP_SO_LO, sopass);
3833 sopass = *(u16 *)&adapter->sopass[4];
3834 lan743x_csr_write(adapter, MAC_MP_SO_HI, sopass);
3835 wucsr |= MAC_MP_SO_EN_;
3836 }
3837
3838 lan743x_csr_write(adapter, MAC_WUCSR, wucsr);
3839 lan743x_csr_write(adapter, PMT_CTL, pmtctl);
3840 lan743x_csr_write(adapter, MAC_RX, macrx);
3841}
3842
3843static int lan743x_pm_suspend(struct device *dev)
3844{
3845 struct pci_dev *pdev = to_pci_dev(dev);
3846 struct net_device *netdev = pci_get_drvdata(pdev);
3847 struct lan743x_adapter *adapter = netdev_priv(netdev);
3848 u32 data;
3849
3850 lan743x_pcidev_shutdown(pdev);
3851
3852 /* clear all wakes */
3853 lan743x_csr_write(adapter, MAC_WUCSR, 0);
3854 lan743x_csr_write(adapter, MAC_WUCSR2, 0);
3855 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF);
3856
3857 if (adapter->wolopts || adapter->phy_wolopts)
3858 lan743x_pm_set_wol(adapter);
3859
3860 if (adapter->is_pci11x1x) {
3861 /* Save HW_CFG to config again in PM resume */
3862 data = lan743x_csr_read(adapter, HW_CFG);
3863 adapter->hw_cfg = data;
3864 data |= (HW_CFG_RST_PROTECT_PCIE_ |
3865 HW_CFG_D3_RESET_DIS_ |
3866 HW_CFG_D3_VAUX_OVR_ |
3867 HW_CFG_HOT_RESET_DIS_ |
3868 HW_CFG_RST_PROTECT_);
3869 lan743x_csr_write(adapter, HW_CFG, data);
3870 }
3871
3872 /* Host sets PME_En, put D3hot */
3873 return pci_prepare_to_sleep(pdev);
3874}
3875
3876static int lan743x_pm_resume(struct device *dev)
3877{
3878 struct pci_dev *pdev = to_pci_dev(dev);
3879 struct net_device *netdev = pci_get_drvdata(pdev);
3880 struct lan743x_adapter *adapter = netdev_priv(netdev);
3881 u32 data;
3882 int ret;
3883
3884 pci_set_power_state(pdev, PCI_D0);
3885 pci_restore_state(pdev);
3886 pci_save_state(pdev);
3887
3888 /* Restore HW_CFG that was saved during pm suspend */
3889 if (adapter->is_pci11x1x)
3890 lan743x_csr_write(adapter, HW_CFG, adapter->hw_cfg);
3891
3892 ret = lan743x_hardware_init(adapter, pdev);
3893 if (ret) {
3894 netif_err(adapter, probe, adapter->netdev,
3895 "lan743x_hardware_init returned %d\n", ret);
3896 lan743x_pci_cleanup(adapter);
3897 return ret;
3898 }
3899
3900 ret = lan743x_csr_read(adapter, MAC_WK_SRC);
3901 netif_dbg(adapter, drv, adapter->netdev,
3902 "Wakeup source : 0x%08X\n", ret);
3903
3904 /* Clear the wol configuration and status bits. Note that
3905 * the status bits are "Write One to Clear (W1C)"
3906 */
3907 data = MAC_WUCSR_EEE_TX_WAKE_ | MAC_WUCSR_EEE_RX_WAKE_ |
3908 MAC_WUCSR_RFE_WAKE_FR_ | MAC_WUCSR_PFDA_FR_ | MAC_WUCSR_WUFR_ |
3909 MAC_WUCSR_MPR_ | MAC_WUCSR_BCAST_FR_;
3910 lan743x_csr_write(adapter, MAC_WUCSR, data);
3911
3912 data = MAC_WUCSR2_NS_RCD_ | MAC_WUCSR2_ARP_RCD_ |
3913 MAC_WUCSR2_IPV6_TCPSYN_RCD_ | MAC_WUCSR2_IPV4_TCPSYN_RCD_;
3914 lan743x_csr_write(adapter, MAC_WUCSR2, data);
3915
3916 data = MAC_WK_SRC_ETH_PHY_WK_ | MAC_WK_SRC_IPV6_TCPSYN_RCD_WK_ |
3917 MAC_WK_SRC_IPV4_TCPSYN_RCD_WK_ | MAC_WK_SRC_EEE_TX_WK_ |
3918 MAC_WK_SRC_EEE_RX_WK_ | MAC_WK_SRC_RFE_FR_WK_ |
3919 MAC_WK_SRC_PFDA_FR_WK_ | MAC_WK_SRC_MP_FR_WK_ |
3920 MAC_WK_SRC_BCAST_FR_WK_ | MAC_WK_SRC_WU_FR_WK_ |
3921 MAC_WK_SRC_WK_FR_SAVED_;
3922 lan743x_csr_write(adapter, MAC_WK_SRC, data);
3923
3924 rtnl_lock();
3925 /* open netdev when netdev is at running state while resume.
3926 * For instance, it is true when system wakesup after pm-suspend
3927 * However, it is false when system wakes up after suspend GUI menu
3928 */
3929 if (netif_running(netdev))
3930 lan743x_netdev_open(netdev);
3931
3932 netif_device_attach(netdev);
3933 rtnl_unlock();
3934
3935 return 0;
3936}
3937
3938static const struct dev_pm_ops lan743x_pm_ops = {
3939 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume)
3940};
3941#endif /* CONFIG_PM_SLEEP */
3942
3943static const struct pci_device_id lan743x_pcidev_tbl[] = {
3944 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) },
3945 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) },
3946 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_A011) },
3947 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_A041) },
3948 { 0, }
3949};
3950
3951MODULE_DEVICE_TABLE(pci, lan743x_pcidev_tbl);
3952
3953static struct pci_driver lan743x_pcidev_driver = {
3954 .name = DRIVER_NAME,
3955 .id_table = lan743x_pcidev_tbl,
3956 .probe = lan743x_pcidev_probe,
3957 .remove = lan743x_pcidev_remove,
3958#ifdef CONFIG_PM_SLEEP
3959 .driver.pm = &lan743x_pm_ops,
3960#endif
3961 .shutdown = lan743x_pcidev_shutdown,
3962};
3963
3964module_pci_driver(lan743x_pcidev_driver);
3965
3966MODULE_AUTHOR(DRIVER_AUTHOR);
3967MODULE_DESCRIPTION(DRIVER_DESC);
3968MODULE_LICENSE("GPL");
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/of_mdio.h>
12#include <linux/of_net.h>
13#include <linux/phy.h>
14#include <linux/phy_fixed.h>
15#include <linux/rtnetlink.h>
16#include <linux/iopoll.h>
17#include <linux/crc16.h>
18#include "lan743x_main.h"
19#include "lan743x_ethtool.h"
20
21static void lan743x_pci_cleanup(struct lan743x_adapter *adapter)
22{
23 pci_release_selected_regions(adapter->pdev,
24 pci_select_bars(adapter->pdev,
25 IORESOURCE_MEM));
26 pci_disable_device(adapter->pdev);
27}
28
29static int lan743x_pci_init(struct lan743x_adapter *adapter,
30 struct pci_dev *pdev)
31{
32 unsigned long bars = 0;
33 int ret;
34
35 adapter->pdev = pdev;
36 ret = pci_enable_device_mem(pdev);
37 if (ret)
38 goto return_error;
39
40 netif_info(adapter, probe, adapter->netdev,
41 "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n",
42 pdev->vendor, pdev->device);
43 bars = pci_select_bars(pdev, IORESOURCE_MEM);
44 if (!test_bit(0, &bars))
45 goto disable_device;
46
47 ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME);
48 if (ret)
49 goto disable_device;
50
51 pci_set_master(pdev);
52 return 0;
53
54disable_device:
55 pci_disable_device(adapter->pdev);
56
57return_error:
58 return ret;
59}
60
61u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset)
62{
63 return ioread32(&adapter->csr.csr_address[offset]);
64}
65
66void lan743x_csr_write(struct lan743x_adapter *adapter, int offset,
67 u32 data)
68{
69 iowrite32(data, &adapter->csr.csr_address[offset]);
70}
71
72#define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset)
73
74static int lan743x_csr_light_reset(struct lan743x_adapter *adapter)
75{
76 u32 data;
77
78 data = lan743x_csr_read(adapter, HW_CFG);
79 data |= HW_CFG_LRST_;
80 lan743x_csr_write(adapter, HW_CFG, data);
81
82 return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data,
83 !(data & HW_CFG_LRST_), 100000, 10000000);
84}
85
86static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter,
87 int offset, u32 bit_mask,
88 int target_value, int usleep_min,
89 int usleep_max, int count)
90{
91 u32 data;
92
93 return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data,
94 target_value == ((data & bit_mask) ? 1 : 0),
95 usleep_max, usleep_min * count);
96}
97
98static int lan743x_csr_init(struct lan743x_adapter *adapter)
99{
100 struct lan743x_csr *csr = &adapter->csr;
101 resource_size_t bar_start, bar_length;
102 int result;
103
104 bar_start = pci_resource_start(adapter->pdev, 0);
105 bar_length = pci_resource_len(adapter->pdev, 0);
106 csr->csr_address = devm_ioremap(&adapter->pdev->dev,
107 bar_start, bar_length);
108 if (!csr->csr_address) {
109 result = -ENOMEM;
110 goto clean_up;
111 }
112
113 csr->id_rev = lan743x_csr_read(adapter, ID_REV);
114 csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
115 netif_info(adapter, probe, adapter->netdev,
116 "ID_REV = 0x%08X, FPGA_REV = %d.%d\n",
117 csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev),
118 FPGA_REV_GET_MINOR_(csr->fpga_rev));
119 if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) {
120 result = -ENODEV;
121 goto clean_up;
122 }
123
124 csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
125 switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) {
126 case ID_REV_CHIP_REV_A0_:
127 csr->flags |= LAN743X_CSR_FLAG_IS_A0;
128 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
129 break;
130 case ID_REV_CHIP_REV_B0_:
131 csr->flags |= LAN743X_CSR_FLAG_IS_B0;
132 break;
133 }
134
135 result = lan743x_csr_light_reset(adapter);
136 if (result)
137 goto clean_up;
138 return 0;
139clean_up:
140 return result;
141}
142
143static void lan743x_intr_software_isr(struct lan743x_adapter *adapter)
144{
145 struct lan743x_intr *intr = &adapter->intr;
146
147 /* disable the interrupt to prevent repeated re-triggering */
148 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
149 intr->software_isr_flag = true;
150 wake_up(&intr->software_isr_wq);
151}
152
153static 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
159 lan743x_csr_read(adapter, INT_EN_SET);
160 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
161 lan743x_csr_write(adapter, INT_EN_CLR,
162 INT_BIT_DMA_TX_(tx->channel_number));
163 }
164
165 if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) {
166 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
167 u32 dmac_int_sts;
168 u32 dmac_int_en;
169
170 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
171 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
172 else
173 dmac_int_sts = ioc_bit;
174 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
175 dmac_int_en = lan743x_csr_read(adapter,
176 DMAC_INT_EN_SET);
177 else
178 dmac_int_en = ioc_bit;
179
180 dmac_int_en &= ioc_bit;
181 dmac_int_sts &= dmac_int_en;
182 if (dmac_int_sts & ioc_bit) {
183 napi_schedule(&tx->napi);
184 enable_flag = false;/* poll func will enable later */
185 }
186 }
187
188 if (enable_flag)
189 /* enable isr */
190 lan743x_csr_write(adapter, INT_EN_SET,
191 INT_BIT_DMA_TX_(tx->channel_number));
192}
193
194static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags)
195{
196 struct lan743x_rx *rx = context;
197 struct lan743x_adapter *adapter = rx->adapter;
198 bool enable_flag = true;
199
200 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
201 lan743x_csr_write(adapter, INT_EN_CLR,
202 INT_BIT_DMA_RX_(rx->channel_number));
203 }
204
205 if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) {
206 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number);
207 u32 dmac_int_sts;
208 u32 dmac_int_en;
209
210 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
211 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
212 else
213 dmac_int_sts = rx_frame_bit;
214 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
215 dmac_int_en = lan743x_csr_read(adapter,
216 DMAC_INT_EN_SET);
217 else
218 dmac_int_en = rx_frame_bit;
219
220 dmac_int_en &= rx_frame_bit;
221 dmac_int_sts &= dmac_int_en;
222 if (dmac_int_sts & rx_frame_bit) {
223 napi_schedule(&rx->napi);
224 enable_flag = false;/* poll funct will enable later */
225 }
226 }
227
228 if (enable_flag) {
229 /* enable isr */
230 lan743x_csr_write(adapter, INT_EN_SET,
231 INT_BIT_DMA_RX_(rx->channel_number));
232 }
233}
234
235static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
236{
237 struct lan743x_adapter *adapter = context;
238 unsigned int channel;
239
240 if (int_sts & INT_BIT_ALL_RX_) {
241 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS;
242 channel++) {
243 u32 int_bit = INT_BIT_DMA_RX_(channel);
244
245 if (int_sts & int_bit) {
246 lan743x_rx_isr(&adapter->rx[channel],
247 int_bit, flags);
248 int_sts &= ~int_bit;
249 }
250 }
251 }
252 if (int_sts & INT_BIT_ALL_TX_) {
253 for (channel = 0; channel < LAN743X_USED_TX_CHANNELS;
254 channel++) {
255 u32 int_bit = INT_BIT_DMA_TX_(channel);
256
257 if (int_sts & int_bit) {
258 lan743x_tx_isr(&adapter->tx[channel],
259 int_bit, flags);
260 int_sts &= ~int_bit;
261 }
262 }
263 }
264 if (int_sts & INT_BIT_ALL_OTHER_) {
265 if (int_sts & INT_BIT_SW_GP_) {
266 lan743x_intr_software_isr(adapter);
267 int_sts &= ~INT_BIT_SW_GP_;
268 }
269 if (int_sts & INT_BIT_1588_) {
270 lan743x_ptp_isr(adapter);
271 int_sts &= ~INT_BIT_1588_;
272 }
273 }
274 if (int_sts)
275 lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
276}
277
278static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr)
279{
280 struct lan743x_vector *vector = ptr;
281 struct lan743x_adapter *adapter = vector->adapter;
282 irqreturn_t result = IRQ_NONE;
283 u32 int_enables;
284 u32 int_sts;
285
286 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) {
287 int_sts = lan743x_csr_read(adapter, INT_STS);
288 } else if (vector->flags &
289 (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C |
290 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) {
291 int_sts = lan743x_csr_read(adapter, INT_STS_R2C);
292 } else {
293 /* use mask as implied status */
294 int_sts = vector->int_mask | INT_BIT_MAS_;
295 }
296
297 if (!(int_sts & INT_BIT_MAS_))
298 goto irq_done;
299
300 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR)
301 /* disable vector interrupt */
302 lan743x_csr_write(adapter,
303 INT_VEC_EN_CLR,
304 INT_VEC_EN_(vector->vector_index));
305
306 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR)
307 /* disable master interrupt */
308 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
309
310 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) {
311 int_enables = lan743x_csr_read(adapter, INT_EN_SET);
312 } else {
313 /* use vector mask as implied enable mask */
314 int_enables = vector->int_mask;
315 }
316
317 int_sts &= int_enables;
318 int_sts &= vector->int_mask;
319 if (int_sts) {
320 if (vector->handler) {
321 vector->handler(vector->context,
322 int_sts, vector->flags);
323 } else {
324 /* disable interrupts on this vector */
325 lan743x_csr_write(adapter, INT_EN_CLR,
326 vector->int_mask);
327 }
328 result = IRQ_HANDLED;
329 }
330
331 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET)
332 /* enable master interrupt */
333 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
334
335 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET)
336 /* enable vector interrupt */
337 lan743x_csr_write(adapter,
338 INT_VEC_EN_SET,
339 INT_VEC_EN_(vector->vector_index));
340irq_done:
341 return result;
342}
343
344static int lan743x_intr_test_isr(struct lan743x_adapter *adapter)
345{
346 struct lan743x_intr *intr = &adapter->intr;
347 int ret;
348
349 intr->software_isr_flag = false;
350
351 /* enable and activate test interrupt */
352 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_);
353 lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_);
354
355 ret = wait_event_timeout(intr->software_isr_wq,
356 intr->software_isr_flag,
357 msecs_to_jiffies(200));
358
359 /* disable test interrupt */
360 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
361
362 return ret > 0 ? 0 : -ENODEV;
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 /* Try to set up MSIX interrupts */
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 /* If MSIX failed try to setup using MSI interrupts */
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 /* If MSIX, and MSI failed, setup using legacy interrupt */
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 /* At this point we must have at least one irq */
507 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF);
508
509 /* map all interrupts to vector 0 */
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 init_waitqueue_head(&intr->software_isr_wq);
537
538 ret = lan743x_intr_register_isr(adapter, 0, flags,
539 INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ |
540 INT_BIT_ALL_OTHER_,
541 lan743x_intr_shared_isr, adapter);
542 if (ret)
543 goto clean_up;
544 intr->flags |= INTR_FLAG_IRQ_REQUESTED(0);
545
546 if (intr->using_vectors)
547 lan743x_csr_write(adapter, INT_VEC_EN_SET,
548 INT_VEC_EN_(0));
549
550 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
551 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD);
552 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD);
553 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD);
554 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD);
555 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD);
556 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD);
557 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD);
558 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD);
559 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432);
560 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001);
561 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF);
562 }
563
564 /* enable interrupts */
565 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
566 ret = lan743x_intr_test_isr(adapter);
567 if (ret)
568 goto clean_up;
569
570 if (intr->number_of_vectors > 1) {
571 int number_of_tx_vectors = intr->number_of_vectors - 1;
572
573 if (number_of_tx_vectors > LAN743X_USED_TX_CHANNELS)
574 number_of_tx_vectors = LAN743X_USED_TX_CHANNELS;
575 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
576 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
577 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
578 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
579 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
580 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
581
582 if (adapter->csr.flags &
583 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
584 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
585 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
586 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
587 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
588 }
589
590 for (index = 0; index < number_of_tx_vectors; index++) {
591 u32 int_bit = INT_BIT_DMA_TX_(index);
592 int vector = index + 1;
593
594 /* map TX interrupt to vector */
595 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector);
596 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1);
597
598 /* Remove TX interrupt from shared mask */
599 intr->vector_list[0].int_mask &= ~int_bit;
600 ret = lan743x_intr_register_isr(adapter, vector, flags,
601 int_bit, lan743x_tx_isr,
602 &adapter->tx[index]);
603 if (ret)
604 goto clean_up;
605 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
606 if (!(flags &
607 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET))
608 lan743x_csr_write(adapter, INT_VEC_EN_SET,
609 INT_VEC_EN_(vector));
610 }
611 }
612 if ((intr->number_of_vectors - LAN743X_USED_TX_CHANNELS) > 1) {
613 int number_of_rx_vectors = intr->number_of_vectors -
614 LAN743X_USED_TX_CHANNELS - 1;
615
616 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS)
617 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS;
618
619 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
620 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
621 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
622 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
623 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
624 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
625
626 if (adapter->csr.flags &
627 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
628 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
629 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
630 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
631 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
632 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
633 }
634 for (index = 0; index < number_of_rx_vectors; index++) {
635 int vector = index + 1 + LAN743X_USED_TX_CHANNELS;
636 u32 int_bit = INT_BIT_DMA_RX_(index);
637
638 /* map RX interrupt to vector */
639 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector);
640 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0);
641 if (flags &
642 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
643 int_vec_en_auto_clr |= INT_VEC_EN_(vector);
644 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
645 int_vec_en_auto_clr);
646 }
647
648 /* Remove RX interrupt from shared mask */
649 intr->vector_list[0].int_mask &= ~int_bit;
650 ret = lan743x_intr_register_isr(adapter, vector, flags,
651 int_bit, lan743x_rx_isr,
652 &adapter->rx[index]);
653 if (ret)
654 goto clean_up;
655 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
656
657 lan743x_csr_write(adapter, INT_VEC_EN_SET,
658 INT_VEC_EN_(vector));
659 }
660 }
661 return 0;
662
663clean_up:
664 lan743x_intr_close(adapter);
665 return ret;
666}
667
668static int lan743x_dp_write(struct lan743x_adapter *adapter,
669 u32 select, u32 addr, u32 length, u32 *buf)
670{
671 u32 dp_sel;
672 int i;
673
674 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
675 1, 40, 100, 100))
676 return -EIO;
677 dp_sel = lan743x_csr_read(adapter, DP_SEL);
678 dp_sel &= ~DP_SEL_MASK_;
679 dp_sel |= select;
680 lan743x_csr_write(adapter, DP_SEL, dp_sel);
681
682 for (i = 0; i < length; i++) {
683 lan743x_csr_write(adapter, DP_ADDR, addr + i);
684 lan743x_csr_write(adapter, DP_DATA_0, buf[i]);
685 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_);
686 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
687 1, 40, 100, 100))
688 return -EIO;
689 }
690
691 return 0;
692}
693
694static u32 lan743x_mac_mii_access(u16 id, u16 index, int read)
695{
696 u32 ret;
697
698 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
699 MAC_MII_ACC_PHY_ADDR_MASK_;
700 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) &
701 MAC_MII_ACC_MIIRINDA_MASK_;
702
703 if (read)
704 ret |= MAC_MII_ACC_MII_READ_;
705 else
706 ret |= MAC_MII_ACC_MII_WRITE_;
707 ret |= MAC_MII_ACC_MII_BUSY_;
708
709 return ret;
710}
711
712static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter)
713{
714 u32 data;
715
716 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data,
717 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000);
718}
719
720static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index)
721{
722 struct lan743x_adapter *adapter = bus->priv;
723 u32 val, mii_access;
724 int ret;
725
726 /* comfirm MII not busy */
727 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
728 if (ret < 0)
729 return ret;
730
731 /* set the address, index & direction (read from PHY) */
732 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ);
733 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
734 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
735 if (ret < 0)
736 return ret;
737
738 val = lan743x_csr_read(adapter, MAC_MII_DATA);
739 return (int)(val & 0xFFFF);
740}
741
742static int lan743x_mdiobus_write(struct mii_bus *bus,
743 int phy_id, int index, u16 regval)
744{
745 struct lan743x_adapter *adapter = bus->priv;
746 u32 val, mii_access;
747 int ret;
748
749 /* confirm MII not busy */
750 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
751 if (ret < 0)
752 return ret;
753 val = (u32)regval;
754 lan743x_csr_write(adapter, MAC_MII_DATA, val);
755
756 /* set the address, index & direction (write to PHY) */
757 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE);
758 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
759 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
760 return ret;
761}
762
763static void lan743x_mac_set_address(struct lan743x_adapter *adapter,
764 u8 *addr)
765{
766 u32 addr_lo, addr_hi;
767
768 addr_lo = addr[0] |
769 addr[1] << 8 |
770 addr[2] << 16 |
771 addr[3] << 24;
772 addr_hi = addr[4] |
773 addr[5] << 8;
774 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo);
775 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi);
776
777 ether_addr_copy(adapter->mac_address, addr);
778 netif_info(adapter, drv, adapter->netdev,
779 "MAC address set to %pM\n", addr);
780}
781
782static int lan743x_mac_init(struct lan743x_adapter *adapter)
783{
784 bool mac_address_valid = true;
785 struct net_device *netdev;
786 u32 mac_addr_hi = 0;
787 u32 mac_addr_lo = 0;
788 u32 data;
789
790 netdev = adapter->netdev;
791
792 /* disable auto duplex, and speed detection. Phylib does that */
793 data = lan743x_csr_read(adapter, MAC_CR);
794 data &= ~(MAC_CR_ADD_ | MAC_CR_ASD_);
795 data |= MAC_CR_CNTR_RST_;
796 lan743x_csr_write(adapter, MAC_CR, data);
797
798 if (!is_valid_ether_addr(adapter->mac_address)) {
799 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH);
800 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL);
801 adapter->mac_address[0] = mac_addr_lo & 0xFF;
802 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF;
803 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF;
804 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF;
805 adapter->mac_address[4] = mac_addr_hi & 0xFF;
806 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF;
807
808 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) &&
809 mac_addr_lo == 0xFFFFFFFF) {
810 mac_address_valid = false;
811 } else if (!is_valid_ether_addr(adapter->mac_address)) {
812 mac_address_valid = false;
813 }
814
815 if (!mac_address_valid)
816 eth_random_addr(adapter->mac_address);
817 }
818 lan743x_mac_set_address(adapter, adapter->mac_address);
819 ether_addr_copy(netdev->dev_addr, adapter->mac_address);
820
821 return 0;
822}
823
824static int lan743x_mac_open(struct lan743x_adapter *adapter)
825{
826 u32 temp;
827
828 temp = lan743x_csr_read(adapter, MAC_RX);
829 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_);
830 temp = lan743x_csr_read(adapter, MAC_TX);
831 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_);
832 return 0;
833}
834
835static void lan743x_mac_close(struct lan743x_adapter *adapter)
836{
837 u32 temp;
838
839 temp = lan743x_csr_read(adapter, MAC_TX);
840 temp &= ~MAC_TX_TXEN_;
841 lan743x_csr_write(adapter, MAC_TX, temp);
842 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_,
843 1, 1000, 20000, 100);
844
845 temp = lan743x_csr_read(adapter, MAC_RX);
846 temp &= ~MAC_RX_RXEN_;
847 lan743x_csr_write(adapter, MAC_RX, temp);
848 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
849 1, 1000, 20000, 100);
850}
851
852static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter,
853 bool tx_enable, bool rx_enable)
854{
855 u32 flow_setting = 0;
856
857 /* set maximum pause time because when fifo space frees
858 * up a zero value pause frame will be sent to release the pause
859 */
860 flow_setting = MAC_FLOW_CR_FCPT_MASK_;
861 if (tx_enable)
862 flow_setting |= MAC_FLOW_CR_TX_FCEN_;
863 if (rx_enable)
864 flow_setting |= MAC_FLOW_CR_RX_FCEN_;
865 lan743x_csr_write(adapter, MAC_FLOW, flow_setting);
866}
867
868static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu)
869{
870 int enabled = 0;
871 u32 mac_rx = 0;
872
873 mac_rx = lan743x_csr_read(adapter, MAC_RX);
874 if (mac_rx & MAC_RX_RXEN_) {
875 enabled = 1;
876 if (mac_rx & MAC_RX_RXD_) {
877 lan743x_csr_write(adapter, MAC_RX, mac_rx);
878 mac_rx &= ~MAC_RX_RXD_;
879 }
880 mac_rx &= ~MAC_RX_RXEN_;
881 lan743x_csr_write(adapter, MAC_RX, mac_rx);
882 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
883 1, 1000, 20000, 100);
884 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_);
885 }
886
887 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_);
888 mac_rx |= (((new_mtu + ETH_HLEN + ETH_FCS_LEN)
889 << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_);
890 lan743x_csr_write(adapter, MAC_RX, mac_rx);
891
892 if (enabled) {
893 mac_rx |= MAC_RX_RXEN_;
894 lan743x_csr_write(adapter, MAC_RX, mac_rx);
895 }
896 return 0;
897}
898
899/* PHY */
900static int lan743x_phy_reset(struct lan743x_adapter *adapter)
901{
902 u32 data;
903
904 /* Only called with in probe, and before mdiobus_register */
905
906 data = lan743x_csr_read(adapter, PMT_CTL);
907 data |= PMT_CTL_ETH_PHY_RST_;
908 lan743x_csr_write(adapter, PMT_CTL, data);
909
910 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data,
911 (!(data & PMT_CTL_ETH_PHY_RST_) &&
912 (data & PMT_CTL_READY_)),
913 50000, 1000000);
914}
915
916static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter,
917 u8 duplex, u16 local_adv,
918 u16 remote_adv)
919{
920 struct lan743x_phy *phy = &adapter->phy;
921 u8 cap;
922
923 if (phy->fc_autoneg)
924 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv);
925 else
926 cap = phy->fc_request_control;
927
928 lan743x_mac_flow_ctrl_set_enables(adapter,
929 cap & FLOW_CTRL_TX,
930 cap & FLOW_CTRL_RX);
931}
932
933static int lan743x_phy_init(struct lan743x_adapter *adapter)
934{
935 return lan743x_phy_reset(adapter);
936}
937
938static void lan743x_phy_link_status_change(struct net_device *netdev)
939{
940 struct lan743x_adapter *adapter = netdev_priv(netdev);
941 struct phy_device *phydev = netdev->phydev;
942 u32 data;
943
944 phy_print_status(phydev);
945 if (phydev->state == PHY_RUNNING) {
946 struct ethtool_link_ksettings ksettings;
947 int remote_advertisement = 0;
948 int local_advertisement = 0;
949
950 data = lan743x_csr_read(adapter, MAC_CR);
951
952 /* set interface mode */
953 if (phy_interface_is_rgmii(phydev))
954 /* RGMII */
955 data &= ~MAC_CR_MII_EN_;
956 else
957 /* GMII */
958 data |= MAC_CR_MII_EN_;
959
960 /* set duplex mode */
961 if (phydev->duplex)
962 data |= MAC_CR_DPX_;
963 else
964 data &= ~MAC_CR_DPX_;
965
966 /* set bus speed */
967 switch (phydev->speed) {
968 case SPEED_10:
969 data &= ~MAC_CR_CFG_H_;
970 data &= ~MAC_CR_CFG_L_;
971 break;
972 case SPEED_100:
973 data &= ~MAC_CR_CFG_H_;
974 data |= MAC_CR_CFG_L_;
975 break;
976 case SPEED_1000:
977 data |= MAC_CR_CFG_H_;
978 data &= ~MAC_CR_CFG_L_;
979 break;
980 }
981 lan743x_csr_write(adapter, MAC_CR, data);
982
983 memset(&ksettings, 0, sizeof(ksettings));
984 phy_ethtool_get_link_ksettings(netdev, &ksettings);
985 local_advertisement =
986 linkmode_adv_to_mii_adv_t(phydev->advertising);
987 remote_advertisement =
988 linkmode_adv_to_mii_adv_t(phydev->lp_advertising);
989
990 lan743x_phy_update_flowcontrol(adapter,
991 ksettings.base.duplex,
992 local_advertisement,
993 remote_advertisement);
994 lan743x_ptp_update_latency(adapter, ksettings.base.speed);
995 }
996}
997
998static void lan743x_phy_close(struct lan743x_adapter *adapter)
999{
1000 struct net_device *netdev = adapter->netdev;
1001
1002 phy_stop(netdev->phydev);
1003 phy_disconnect(netdev->phydev);
1004 netdev->phydev = NULL;
1005}
1006
1007static int lan743x_phy_open(struct lan743x_adapter *adapter)
1008{
1009 struct net_device *netdev = adapter->netdev;
1010 struct lan743x_phy *phy = &adapter->phy;
1011 struct phy_device *phydev;
1012 int ret = -EIO;
1013
1014 /* try devicetree phy, or fixed link */
1015 phydev = of_phy_get_and_connect(netdev, adapter->pdev->dev.of_node,
1016 lan743x_phy_link_status_change);
1017
1018 if (!phydev) {
1019 /* try internal phy */
1020 phydev = phy_find_first(adapter->mdiobus);
1021 if (!phydev)
1022 goto return_error;
1023
1024 ret = phy_connect_direct(netdev, phydev,
1025 lan743x_phy_link_status_change,
1026 PHY_INTERFACE_MODE_GMII);
1027 if (ret)
1028 goto return_error;
1029 }
1030
1031 /* MAC doesn't support 1000T Half */
1032 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
1033
1034 /* support both flow controls */
1035 phy_support_asym_pause(phydev);
1036 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
1037 phy->fc_autoneg = phydev->autoneg;
1038
1039 phy_start(phydev);
1040 phy_start_aneg(phydev);
1041 phy_attached_info(phydev);
1042 return 0;
1043
1044return_error:
1045 return ret;
1046}
1047
1048static void lan743x_rfe_open(struct lan743x_adapter *adapter)
1049{
1050 lan743x_csr_write(adapter, RFE_RSS_CFG,
1051 RFE_RSS_CFG_UDP_IPV6_EX_ |
1052 RFE_RSS_CFG_TCP_IPV6_EX_ |
1053 RFE_RSS_CFG_IPV6_EX_ |
1054 RFE_RSS_CFG_UDP_IPV6_ |
1055 RFE_RSS_CFG_TCP_IPV6_ |
1056 RFE_RSS_CFG_IPV6_ |
1057 RFE_RSS_CFG_UDP_IPV4_ |
1058 RFE_RSS_CFG_TCP_IPV4_ |
1059 RFE_RSS_CFG_IPV4_ |
1060 RFE_RSS_CFG_VALID_HASH_BITS_ |
1061 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ |
1062 RFE_RSS_CFG_RSS_HASH_STORE_ |
1063 RFE_RSS_CFG_RSS_ENABLE_);
1064}
1065
1066static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter)
1067{
1068 u8 *mac_addr;
1069 u32 mac_addr_hi = 0;
1070 u32 mac_addr_lo = 0;
1071
1072 /* Add mac address to perfect Filter */
1073 mac_addr = adapter->mac_address;
1074 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) |
1075 (((u32)(mac_addr[1])) << 8) |
1076 (((u32)(mac_addr[2])) << 16) |
1077 (((u32)(mac_addr[3])) << 24));
1078 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) |
1079 (((u32)(mac_addr[5])) << 8));
1080
1081 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo);
1082 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0),
1083 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_);
1084}
1085
1086static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter)
1087{
1088 struct net_device *netdev = adapter->netdev;
1089 u32 hash_table[DP_SEL_VHF_HASH_LEN];
1090 u32 rfctl;
1091 u32 data;
1092
1093 rfctl = lan743x_csr_read(adapter, RFE_CTL);
1094 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ |
1095 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
1096 rfctl |= RFE_CTL_AB_;
1097 if (netdev->flags & IFF_PROMISC) {
1098 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_;
1099 } else {
1100 if (netdev->flags & IFF_ALLMULTI)
1101 rfctl |= RFE_CTL_AM_;
1102 }
1103
1104 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32));
1105 if (netdev_mc_count(netdev)) {
1106 struct netdev_hw_addr *ha;
1107 int i;
1108
1109 rfctl |= RFE_CTL_DA_PERFECT_;
1110 i = 1;
1111 netdev_for_each_mc_addr(ha, netdev) {
1112 /* set first 32 into Perfect Filter */
1113 if (i < 33) {
1114 lan743x_csr_write(adapter,
1115 RFE_ADDR_FILT_HI(i), 0);
1116 data = ha->addr[3];
1117 data = ha->addr[2] | (data << 8);
1118 data = ha->addr[1] | (data << 8);
1119 data = ha->addr[0] | (data << 8);
1120 lan743x_csr_write(adapter,
1121 RFE_ADDR_FILT_LO(i), data);
1122 data = ha->addr[5];
1123 data = ha->addr[4] | (data << 8);
1124 data |= RFE_ADDR_FILT_HI_VALID_;
1125 lan743x_csr_write(adapter,
1126 RFE_ADDR_FILT_HI(i), data);
1127 } else {
1128 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >>
1129 23) & 0x1FF;
1130 hash_table[bitnum / 32] |= (1 << (bitnum % 32));
1131 rfctl |= RFE_CTL_MCAST_HASH_;
1132 }
1133 i++;
1134 }
1135 }
1136
1137 lan743x_dp_write(adapter, DP_SEL_RFE_RAM,
1138 DP_SEL_VHF_VLAN_LEN,
1139 DP_SEL_VHF_HASH_LEN, hash_table);
1140 lan743x_csr_write(adapter, RFE_CTL, rfctl);
1141}
1142
1143static int lan743x_dmac_init(struct lan743x_adapter *adapter)
1144{
1145 u32 data = 0;
1146
1147 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_);
1148 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_,
1149 0, 1000, 20000, 100);
1150 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) {
1151 case DMA_DESCRIPTOR_SPACING_16:
1152 data = DMAC_CFG_MAX_DSPACE_16_;
1153 break;
1154 case DMA_DESCRIPTOR_SPACING_32:
1155 data = DMAC_CFG_MAX_DSPACE_32_;
1156 break;
1157 case DMA_DESCRIPTOR_SPACING_64:
1158 data = DMAC_CFG_MAX_DSPACE_64_;
1159 break;
1160 case DMA_DESCRIPTOR_SPACING_128:
1161 data = DMAC_CFG_MAX_DSPACE_128_;
1162 break;
1163 default:
1164 return -EPERM;
1165 }
1166 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1167 data |= DMAC_CFG_COAL_EN_;
1168 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_;
1169 data |= DMAC_CFG_MAX_READ_REQ_SET_(6);
1170 lan743x_csr_write(adapter, DMAC_CFG, data);
1171 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1);
1172 data |= DMAC_COAL_CFG_TIMER_TX_START_;
1173 data |= DMAC_COAL_CFG_FLUSH_INTS_;
1174 data |= DMAC_COAL_CFG_INT_EXIT_COAL_;
1175 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_;
1176 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A);
1177 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C);
1178 lan743x_csr_write(adapter, DMAC_COAL_CFG, data);
1179 data = DMAC_OBFF_TX_THRES_SET_(0x08);
1180 data |= DMAC_OBFF_RX_THRES_SET_(0x0A);
1181 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data);
1182 return 0;
1183}
1184
1185static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter,
1186 int tx_channel)
1187{
1188 u32 dmac_cmd = 0;
1189
1190 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1191 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1192 DMAC_CMD_START_T_(tx_channel)),
1193 (dmac_cmd &
1194 DMAC_CMD_STOP_T_(tx_channel)));
1195}
1196
1197static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter,
1198 int tx_channel)
1199{
1200 int timeout = 100;
1201 int result = 0;
1202
1203 while (timeout &&
1204 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) ==
1205 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1206 usleep_range(1000, 20000);
1207 timeout--;
1208 }
1209 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1210 result = -ENODEV;
1211 return result;
1212}
1213
1214static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter,
1215 int rx_channel)
1216{
1217 u32 dmac_cmd = 0;
1218
1219 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1220 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1221 DMAC_CMD_START_R_(rx_channel)),
1222 (dmac_cmd &
1223 DMAC_CMD_STOP_R_(rx_channel)));
1224}
1225
1226static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter,
1227 int rx_channel)
1228{
1229 int timeout = 100;
1230 int result = 0;
1231
1232 while (timeout &&
1233 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) ==
1234 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1235 usleep_range(1000, 20000);
1236 timeout--;
1237 }
1238 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1239 result = -ENODEV;
1240 return result;
1241}
1242
1243static void lan743x_tx_release_desc(struct lan743x_tx *tx,
1244 int descriptor_index, bool cleanup)
1245{
1246 struct lan743x_tx_buffer_info *buffer_info = NULL;
1247 struct lan743x_tx_descriptor *descriptor = NULL;
1248 u32 descriptor_type = 0;
1249 bool ignore_sync;
1250
1251 descriptor = &tx->ring_cpu_ptr[descriptor_index];
1252 buffer_info = &tx->buffer_info[descriptor_index];
1253 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE))
1254 goto done;
1255
1256 descriptor_type = le32_to_cpu(descriptor->data0) &
1257 TX_DESC_DATA0_DTYPE_MASK_;
1258 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_)
1259 goto clean_up_data_descriptor;
1260 else
1261 goto clear_active;
1262
1263clean_up_data_descriptor:
1264 if (buffer_info->dma_ptr) {
1265 if (buffer_info->flags &
1266 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) {
1267 dma_unmap_page(&tx->adapter->pdev->dev,
1268 buffer_info->dma_ptr,
1269 buffer_info->buffer_length,
1270 DMA_TO_DEVICE);
1271 } else {
1272 dma_unmap_single(&tx->adapter->pdev->dev,
1273 buffer_info->dma_ptr,
1274 buffer_info->buffer_length,
1275 DMA_TO_DEVICE);
1276 }
1277 buffer_info->dma_ptr = 0;
1278 buffer_info->buffer_length = 0;
1279 }
1280 if (!buffer_info->skb)
1281 goto clear_active;
1282
1283 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) {
1284 dev_kfree_skb_any(buffer_info->skb);
1285 goto clear_skb;
1286 }
1287
1288 if (cleanup) {
1289 lan743x_ptp_unrequest_tx_timestamp(tx->adapter);
1290 dev_kfree_skb_any(buffer_info->skb);
1291 } else {
1292 ignore_sync = (buffer_info->flags &
1293 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0;
1294 lan743x_ptp_tx_timestamp_skb(tx->adapter,
1295 buffer_info->skb, ignore_sync);
1296 }
1297
1298clear_skb:
1299 buffer_info->skb = NULL;
1300
1301clear_active:
1302 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE;
1303
1304done:
1305 memset(buffer_info, 0, sizeof(*buffer_info));
1306 memset(descriptor, 0, sizeof(*descriptor));
1307}
1308
1309static int lan743x_tx_next_index(struct lan743x_tx *tx, int index)
1310{
1311 return ((++index) % tx->ring_size);
1312}
1313
1314static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx)
1315{
1316 while (le32_to_cpu(*tx->head_cpu_ptr) != (tx->last_head)) {
1317 lan743x_tx_release_desc(tx, tx->last_head, false);
1318 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1319 }
1320}
1321
1322static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx)
1323{
1324 u32 original_head = 0;
1325
1326 original_head = tx->last_head;
1327 do {
1328 lan743x_tx_release_desc(tx, tx->last_head, true);
1329 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1330 } while (tx->last_head != original_head);
1331 memset(tx->ring_cpu_ptr, 0,
1332 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size));
1333 memset(tx->buffer_info, 0,
1334 sizeof(*tx->buffer_info) * (tx->ring_size));
1335}
1336
1337static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx,
1338 struct sk_buff *skb)
1339{
1340 int result = 1; /* 1 for the main skb buffer */
1341 int nr_frags = 0;
1342
1343 if (skb_is_gso(skb))
1344 result++; /* requires an extension descriptor */
1345 nr_frags = skb_shinfo(skb)->nr_frags;
1346 result += nr_frags; /* 1 for each fragment buffer */
1347 return result;
1348}
1349
1350static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx)
1351{
1352 int last_head = tx->last_head;
1353 int last_tail = tx->last_tail;
1354
1355 if (last_tail >= last_head)
1356 return tx->ring_size - last_tail + last_head - 1;
1357 else
1358 return last_head - last_tail - 1;
1359}
1360
1361void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
1362 bool enable_timestamping,
1363 bool enable_onestep_sync)
1364{
1365 if (enable_timestamping)
1366 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED;
1367 else
1368 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED;
1369 if (enable_onestep_sync)
1370 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC;
1371 else
1372 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC;
1373}
1374
1375static int lan743x_tx_frame_start(struct lan743x_tx *tx,
1376 unsigned char *first_buffer,
1377 unsigned int first_buffer_length,
1378 unsigned int frame_length,
1379 bool time_stamp,
1380 bool check_sum)
1381{
1382 /* called only from within lan743x_tx_xmit_frame.
1383 * assuming tx->ring_lock has already been acquired.
1384 */
1385 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1386 struct lan743x_tx_buffer_info *buffer_info = NULL;
1387 struct lan743x_adapter *adapter = tx->adapter;
1388 struct device *dev = &adapter->pdev->dev;
1389 dma_addr_t dma_ptr;
1390
1391 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS;
1392 tx->frame_first = tx->last_tail;
1393 tx->frame_tail = tx->frame_first;
1394
1395 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1396 buffer_info = &tx->buffer_info[tx->frame_tail];
1397 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length,
1398 DMA_TO_DEVICE);
1399 if (dma_mapping_error(dev, dma_ptr))
1400 return -ENOMEM;
1401
1402 tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr));
1403 tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr));
1404 tx_descriptor->data3 = cpu_to_le32((frame_length << 16) &
1405 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_);
1406
1407 buffer_info->skb = NULL;
1408 buffer_info->dma_ptr = dma_ptr;
1409 buffer_info->buffer_length = first_buffer_length;
1410 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1411
1412 tx->frame_data0 = (first_buffer_length &
1413 TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1414 TX_DESC_DATA0_DTYPE_DATA_ |
1415 TX_DESC_DATA0_FS_ |
1416 TX_DESC_DATA0_FCS_;
1417 if (time_stamp)
1418 tx->frame_data0 |= TX_DESC_DATA0_TSE_;
1419
1420 if (check_sum)
1421 tx->frame_data0 |= TX_DESC_DATA0_ICE_ |
1422 TX_DESC_DATA0_IPE_ |
1423 TX_DESC_DATA0_TPE_;
1424
1425 /* data0 will be programmed in one of other frame assembler functions */
1426 return 0;
1427}
1428
1429static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx,
1430 unsigned int frame_length,
1431 int nr_frags)
1432{
1433 /* called only from within lan743x_tx_xmit_frame.
1434 * assuming tx->ring_lock has already been acquired.
1435 */
1436 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1437 struct lan743x_tx_buffer_info *buffer_info = NULL;
1438
1439 /* wrap up previous descriptor */
1440 tx->frame_data0 |= TX_DESC_DATA0_EXT_;
1441 if (nr_frags <= 0) {
1442 tx->frame_data0 |= TX_DESC_DATA0_LS_;
1443 tx->frame_data0 |= TX_DESC_DATA0_IOC_;
1444 }
1445 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1446 tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
1447
1448 /* move to next descriptor */
1449 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1450 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1451 buffer_info = &tx->buffer_info[tx->frame_tail];
1452
1453 /* add extension descriptor */
1454 tx_descriptor->data1 = 0;
1455 tx_descriptor->data2 = 0;
1456 tx_descriptor->data3 = 0;
1457
1458 buffer_info->skb = NULL;
1459 buffer_info->dma_ptr = 0;
1460 buffer_info->buffer_length = 0;
1461 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1462
1463 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) |
1464 TX_DESC_DATA0_DTYPE_EXT_ |
1465 TX_DESC_DATA0_EXT_LSO_;
1466
1467 /* data0 will be programmed in one of other frame assembler functions */
1468}
1469
1470static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx,
1471 const skb_frag_t *fragment,
1472 unsigned int frame_length)
1473{
1474 /* called only from within lan743x_tx_xmit_frame
1475 * assuming tx->ring_lock has already been acquired
1476 */
1477 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1478 struct lan743x_tx_buffer_info *buffer_info = NULL;
1479 struct lan743x_adapter *adapter = tx->adapter;
1480 struct device *dev = &adapter->pdev->dev;
1481 unsigned int fragment_length = 0;
1482 dma_addr_t dma_ptr;
1483
1484 fragment_length = skb_frag_size(fragment);
1485 if (!fragment_length)
1486 return 0;
1487
1488 /* wrap up previous descriptor */
1489 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1490 tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
1491
1492 /* move to next descriptor */
1493 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1494 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1495 buffer_info = &tx->buffer_info[tx->frame_tail];
1496 dma_ptr = skb_frag_dma_map(dev, fragment,
1497 0, fragment_length,
1498 DMA_TO_DEVICE);
1499 if (dma_mapping_error(dev, dma_ptr)) {
1500 int desc_index;
1501
1502 /* cleanup all previously setup descriptors */
1503 desc_index = tx->frame_first;
1504 while (desc_index != tx->frame_tail) {
1505 lan743x_tx_release_desc(tx, desc_index, true);
1506 desc_index = lan743x_tx_next_index(tx, desc_index);
1507 }
1508 dma_wmb();
1509 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1510 tx->frame_first = 0;
1511 tx->frame_data0 = 0;
1512 tx->frame_tail = 0;
1513 return -ENOMEM;
1514 }
1515
1516 tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr));
1517 tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr));
1518 tx_descriptor->data3 = cpu_to_le32((frame_length << 16) &
1519 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_);
1520
1521 buffer_info->skb = NULL;
1522 buffer_info->dma_ptr = dma_ptr;
1523 buffer_info->buffer_length = fragment_length;
1524 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1525 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT;
1526
1527 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1528 TX_DESC_DATA0_DTYPE_DATA_ |
1529 TX_DESC_DATA0_FCS_;
1530
1531 /* data0 will be programmed in one of other frame assembler functions */
1532 return 0;
1533}
1534
1535static void lan743x_tx_frame_end(struct lan743x_tx *tx,
1536 struct sk_buff *skb,
1537 bool time_stamp,
1538 bool ignore_sync)
1539{
1540 /* called only from within lan743x_tx_xmit_frame
1541 * assuming tx->ring_lock has already been acquired
1542 */
1543 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1544 struct lan743x_tx_buffer_info *buffer_info = NULL;
1545 struct lan743x_adapter *adapter = tx->adapter;
1546 u32 tx_tail_flags = 0;
1547
1548 /* wrap up previous descriptor */
1549 if ((tx->frame_data0 & TX_DESC_DATA0_DTYPE_MASK_) ==
1550 TX_DESC_DATA0_DTYPE_DATA_) {
1551 tx->frame_data0 |= TX_DESC_DATA0_LS_;
1552 tx->frame_data0 |= TX_DESC_DATA0_IOC_;
1553 }
1554
1555 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1556 buffer_info = &tx->buffer_info[tx->frame_tail];
1557 buffer_info->skb = skb;
1558 if (time_stamp)
1559 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED;
1560 if (ignore_sync)
1561 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC;
1562
1563 tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
1564 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1565 tx->last_tail = tx->frame_tail;
1566
1567 dma_wmb();
1568
1569 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
1570 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_;
1571 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)
1572 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ |
1573 TX_TAIL_SET_TOP_INT_EN_;
1574
1575 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
1576 tx_tail_flags | tx->frame_tail);
1577 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1578}
1579
1580static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
1581 struct sk_buff *skb)
1582{
1583 int required_number_of_descriptors = 0;
1584 unsigned int start_frame_length = 0;
1585 unsigned int frame_length = 0;
1586 unsigned int head_length = 0;
1587 unsigned long irq_flags = 0;
1588 bool do_timestamp = false;
1589 bool ignore_sync = false;
1590 int nr_frags = 0;
1591 bool gso = false;
1592 int j;
1593
1594 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb);
1595
1596 spin_lock_irqsave(&tx->ring_lock, irq_flags);
1597 if (required_number_of_descriptors >
1598 lan743x_tx_get_avail_desc(tx)) {
1599 if (required_number_of_descriptors > (tx->ring_size - 1)) {
1600 dev_kfree_skb_irq(skb);
1601 } else {
1602 /* save to overflow buffer */
1603 tx->overflow_skb = skb;
1604 netif_stop_queue(tx->adapter->netdev);
1605 }
1606 goto unlock;
1607 }
1608
1609 /* space available, transmit skb */
1610 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
1611 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) &&
1612 (lan743x_ptp_request_tx_timestamp(tx->adapter))) {
1613 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1614 do_timestamp = true;
1615 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC)
1616 ignore_sync = true;
1617 }
1618 head_length = skb_headlen(skb);
1619 frame_length = skb_pagelen(skb);
1620 nr_frags = skb_shinfo(skb)->nr_frags;
1621 start_frame_length = frame_length;
1622 gso = skb_is_gso(skb);
1623 if (gso) {
1624 start_frame_length = max(skb_shinfo(skb)->gso_size,
1625 (unsigned short)8);
1626 }
1627
1628 if (lan743x_tx_frame_start(tx,
1629 skb->data, head_length,
1630 start_frame_length,
1631 do_timestamp,
1632 skb->ip_summed == CHECKSUM_PARTIAL)) {
1633 dev_kfree_skb_irq(skb);
1634 goto unlock;
1635 }
1636
1637 if (gso)
1638 lan743x_tx_frame_add_lso(tx, frame_length, nr_frags);
1639
1640 if (nr_frags <= 0)
1641 goto finish;
1642
1643 for (j = 0; j < nr_frags; j++) {
1644 const skb_frag_t *frag = &(skb_shinfo(skb)->frags[j]);
1645
1646 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) {
1647 /* upon error no need to call
1648 * lan743x_tx_frame_end
1649 * frame assembler clean up was performed inside
1650 * lan743x_tx_frame_add_fragment
1651 */
1652 dev_kfree_skb_irq(skb);
1653 goto unlock;
1654 }
1655 }
1656
1657finish:
1658 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync);
1659
1660unlock:
1661 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
1662 return NETDEV_TX_OK;
1663}
1664
1665static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight)
1666{
1667 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi);
1668 struct lan743x_adapter *adapter = tx->adapter;
1669 bool start_transmitter = false;
1670 unsigned long irq_flags = 0;
1671 u32 ioc_bit = 0;
1672
1673 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
1674 lan743x_csr_read(adapter, DMAC_INT_STS);
1675 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C)
1676 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit);
1677 spin_lock_irqsave(&tx->ring_lock, irq_flags);
1678
1679 /* clean up tx ring */
1680 lan743x_tx_release_completed_descriptors(tx);
1681 if (netif_queue_stopped(adapter->netdev)) {
1682 if (tx->overflow_skb) {
1683 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <=
1684 lan743x_tx_get_avail_desc(tx))
1685 start_transmitter = true;
1686 } else {
1687 netif_wake_queue(adapter->netdev);
1688 }
1689 }
1690 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
1691
1692 if (start_transmitter) {
1693 /* space is now available, transmit overflow skb */
1694 lan743x_tx_xmit_frame(tx, tx->overflow_skb);
1695 tx->overflow_skb = NULL;
1696 netif_wake_queue(adapter->netdev);
1697 }
1698
1699 if (!napi_complete(napi))
1700 goto done;
1701
1702 /* enable isr */
1703 lan743x_csr_write(adapter, INT_EN_SET,
1704 INT_BIT_DMA_TX_(tx->channel_number));
1705 lan743x_csr_read(adapter, INT_STS);
1706
1707done:
1708 return 0;
1709}
1710
1711static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx)
1712{
1713 if (tx->head_cpu_ptr) {
1714 dma_free_coherent(&tx->adapter->pdev->dev,
1715 sizeof(*tx->head_cpu_ptr), tx->head_cpu_ptr,
1716 tx->head_dma_ptr);
1717 tx->head_cpu_ptr = NULL;
1718 tx->head_dma_ptr = 0;
1719 }
1720 kfree(tx->buffer_info);
1721 tx->buffer_info = NULL;
1722
1723 if (tx->ring_cpu_ptr) {
1724 dma_free_coherent(&tx->adapter->pdev->dev,
1725 tx->ring_allocation_size, tx->ring_cpu_ptr,
1726 tx->ring_dma_ptr);
1727 tx->ring_allocation_size = 0;
1728 tx->ring_cpu_ptr = NULL;
1729 tx->ring_dma_ptr = 0;
1730 }
1731 tx->ring_size = 0;
1732}
1733
1734static int lan743x_tx_ring_init(struct lan743x_tx *tx)
1735{
1736 size_t ring_allocation_size = 0;
1737 void *cpu_ptr = NULL;
1738 dma_addr_t dma_ptr;
1739 int ret = -ENOMEM;
1740
1741 tx->ring_size = LAN743X_TX_RING_SIZE;
1742 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) {
1743 ret = -EINVAL;
1744 goto cleanup;
1745 }
1746 ring_allocation_size = ALIGN(tx->ring_size *
1747 sizeof(struct lan743x_tx_descriptor),
1748 PAGE_SIZE);
1749 dma_ptr = 0;
1750 cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev,
1751 ring_allocation_size, &dma_ptr, GFP_KERNEL);
1752 if (!cpu_ptr) {
1753 ret = -ENOMEM;
1754 goto cleanup;
1755 }
1756
1757 tx->ring_allocation_size = ring_allocation_size;
1758 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr;
1759 tx->ring_dma_ptr = dma_ptr;
1760
1761 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL);
1762 if (!cpu_ptr) {
1763 ret = -ENOMEM;
1764 goto cleanup;
1765 }
1766 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr;
1767 dma_ptr = 0;
1768 cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev,
1769 sizeof(*tx->head_cpu_ptr), &dma_ptr,
1770 GFP_KERNEL);
1771 if (!cpu_ptr) {
1772 ret = -ENOMEM;
1773 goto cleanup;
1774 }
1775
1776 tx->head_cpu_ptr = cpu_ptr;
1777 tx->head_dma_ptr = dma_ptr;
1778 if (tx->head_dma_ptr & 0x3) {
1779 ret = -ENOMEM;
1780 goto cleanup;
1781 }
1782
1783 return 0;
1784
1785cleanup:
1786 lan743x_tx_ring_cleanup(tx);
1787 return ret;
1788}
1789
1790static void lan743x_tx_close(struct lan743x_tx *tx)
1791{
1792 struct lan743x_adapter *adapter = tx->adapter;
1793
1794 lan743x_csr_write(adapter,
1795 DMAC_CMD,
1796 DMAC_CMD_STOP_T_(tx->channel_number));
1797 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number);
1798
1799 lan743x_csr_write(adapter,
1800 DMAC_INT_EN_CLR,
1801 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
1802 lan743x_csr_write(adapter, INT_EN_CLR,
1803 INT_BIT_DMA_TX_(tx->channel_number));
1804 napi_disable(&tx->napi);
1805 netif_napi_del(&tx->napi);
1806
1807 lan743x_csr_write(adapter, FCT_TX_CTL,
1808 FCT_TX_CTL_DIS_(tx->channel_number));
1809 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
1810 FCT_TX_CTL_EN_(tx->channel_number),
1811 0, 1000, 20000, 100);
1812
1813 lan743x_tx_release_all_descriptors(tx);
1814
1815 if (tx->overflow_skb) {
1816 dev_kfree_skb(tx->overflow_skb);
1817 tx->overflow_skb = NULL;
1818 }
1819
1820 lan743x_tx_ring_cleanup(tx);
1821}
1822
1823static int lan743x_tx_open(struct lan743x_tx *tx)
1824{
1825 struct lan743x_adapter *adapter = NULL;
1826 u32 data = 0;
1827 int ret;
1828
1829 adapter = tx->adapter;
1830 ret = lan743x_tx_ring_init(tx);
1831 if (ret)
1832 return ret;
1833
1834 /* initialize fifo */
1835 lan743x_csr_write(adapter, FCT_TX_CTL,
1836 FCT_TX_CTL_RESET_(tx->channel_number));
1837 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
1838 FCT_TX_CTL_RESET_(tx->channel_number),
1839 0, 1000, 20000, 100);
1840
1841 /* enable fifo */
1842 lan743x_csr_write(adapter, FCT_TX_CTL,
1843 FCT_TX_CTL_EN_(tx->channel_number));
1844
1845 /* reset tx channel */
1846 lan743x_csr_write(adapter, DMAC_CMD,
1847 DMAC_CMD_TX_SWR_(tx->channel_number));
1848 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
1849 DMAC_CMD_TX_SWR_(tx->channel_number),
1850 0, 1000, 20000, 100);
1851
1852 /* Write TX_BASE_ADDR */
1853 lan743x_csr_write(adapter,
1854 TX_BASE_ADDRH(tx->channel_number),
1855 DMA_ADDR_HIGH32(tx->ring_dma_ptr));
1856 lan743x_csr_write(adapter,
1857 TX_BASE_ADDRL(tx->channel_number),
1858 DMA_ADDR_LOW32(tx->ring_dma_ptr));
1859
1860 /* Write TX_CFG_B */
1861 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number));
1862 data &= ~TX_CFG_B_TX_RING_LEN_MASK_;
1863 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_);
1864 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1865 data |= TX_CFG_B_TDMABL_512_;
1866 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data);
1867
1868 /* Write TX_CFG_A */
1869 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_;
1870 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
1871 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_;
1872 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10);
1873 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04);
1874 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07);
1875 }
1876 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data);
1877
1878 /* Write TX_HEAD_WRITEBACK_ADDR */
1879 lan743x_csr_write(adapter,
1880 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number),
1881 DMA_ADDR_HIGH32(tx->head_dma_ptr));
1882 lan743x_csr_write(adapter,
1883 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number),
1884 DMA_ADDR_LOW32(tx->head_dma_ptr));
1885
1886 /* set last head */
1887 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number));
1888
1889 /* write TX_TAIL */
1890 tx->last_tail = 0;
1891 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
1892 (u32)(tx->last_tail));
1893 tx->vector_flags = lan743x_intr_get_vector_flags(adapter,
1894 INT_BIT_DMA_TX_
1895 (tx->channel_number));
1896 netif_tx_napi_add(adapter->netdev,
1897 &tx->napi, lan743x_tx_napi_poll,
1898 tx->ring_size - 1);
1899 napi_enable(&tx->napi);
1900
1901 data = 0;
1902 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
1903 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_;
1904 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
1905 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_;
1906 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
1907 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_;
1908 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
1909 data |= TX_CFG_C_TX_INT_EN_R2C_;
1910 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data);
1911
1912 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET))
1913 lan743x_csr_write(adapter, INT_EN_SET,
1914 INT_BIT_DMA_TX_(tx->channel_number));
1915 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
1916 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
1917
1918 /* start dmac channel */
1919 lan743x_csr_write(adapter, DMAC_CMD,
1920 DMAC_CMD_START_T_(tx->channel_number));
1921 return 0;
1922}
1923
1924static int lan743x_rx_next_index(struct lan743x_rx *rx, int index)
1925{
1926 return ((++index) % rx->ring_size);
1927}
1928
1929static void lan743x_rx_update_tail(struct lan743x_rx *rx, int index)
1930{
1931 /* update the tail once per 8 descriptors */
1932 if ((index & 7) == 7)
1933 lan743x_csr_write(rx->adapter, RX_TAIL(rx->channel_number),
1934 index);
1935}
1936
1937static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index)
1938{
1939 struct net_device *netdev = rx->adapter->netdev;
1940 struct device *dev = &rx->adapter->pdev->dev;
1941 struct lan743x_rx_buffer_info *buffer_info;
1942 unsigned int buffer_length, used_length;
1943 struct lan743x_rx_descriptor *descriptor;
1944 struct sk_buff *skb;
1945 dma_addr_t dma_ptr;
1946
1947 buffer_length = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + RX_HEAD_PADDING;
1948
1949 descriptor = &rx->ring_cpu_ptr[index];
1950 buffer_info = &rx->buffer_info[index];
1951 skb = __netdev_alloc_skb(netdev, buffer_length, GFP_ATOMIC | GFP_DMA);
1952 if (!skb)
1953 return -ENOMEM;
1954 dma_ptr = dma_map_single(dev, skb->data, buffer_length, DMA_FROM_DEVICE);
1955 if (dma_mapping_error(dev, dma_ptr)) {
1956 dev_kfree_skb_any(skb);
1957 return -ENOMEM;
1958 }
1959 if (buffer_info->dma_ptr) {
1960 /* sync used area of buffer only */
1961 if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_)
1962 /* frame length is valid only if LS bit is set.
1963 * it's a safe upper bound for the used area in this
1964 * buffer.
1965 */
1966 used_length = min(RX_DESC_DATA0_FRAME_LENGTH_GET_
1967 (le32_to_cpu(descriptor->data0)),
1968 buffer_info->buffer_length);
1969 else
1970 used_length = buffer_info->buffer_length;
1971 dma_sync_single_for_cpu(dev, buffer_info->dma_ptr,
1972 used_length,
1973 DMA_FROM_DEVICE);
1974 dma_unmap_single_attrs(dev, buffer_info->dma_ptr,
1975 buffer_info->buffer_length,
1976 DMA_FROM_DEVICE,
1977 DMA_ATTR_SKIP_CPU_SYNC);
1978 }
1979
1980 buffer_info->skb = skb;
1981 buffer_info->dma_ptr = dma_ptr;
1982 buffer_info->buffer_length = buffer_length;
1983 descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr));
1984 descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr));
1985 descriptor->data3 = 0;
1986 descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ |
1987 (buffer_length & RX_DESC_DATA0_BUF_LENGTH_MASK_)));
1988 lan743x_rx_update_tail(rx, index);
1989
1990 return 0;
1991}
1992
1993static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index)
1994{
1995 struct lan743x_rx_buffer_info *buffer_info;
1996 struct lan743x_rx_descriptor *descriptor;
1997
1998 descriptor = &rx->ring_cpu_ptr[index];
1999 buffer_info = &rx->buffer_info[index];
2000
2001 descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr));
2002 descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr));
2003 descriptor->data3 = 0;
2004 descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ |
2005 ((buffer_info->buffer_length) &
2006 RX_DESC_DATA0_BUF_LENGTH_MASK_)));
2007 lan743x_rx_update_tail(rx, index);
2008}
2009
2010static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index)
2011{
2012 struct lan743x_rx_buffer_info *buffer_info;
2013 struct lan743x_rx_descriptor *descriptor;
2014
2015 descriptor = &rx->ring_cpu_ptr[index];
2016 buffer_info = &rx->buffer_info[index];
2017
2018 memset(descriptor, 0, sizeof(*descriptor));
2019
2020 if (buffer_info->dma_ptr) {
2021 dma_unmap_single(&rx->adapter->pdev->dev,
2022 buffer_info->dma_ptr,
2023 buffer_info->buffer_length,
2024 DMA_FROM_DEVICE);
2025 buffer_info->dma_ptr = 0;
2026 }
2027
2028 if (buffer_info->skb) {
2029 dev_kfree_skb(buffer_info->skb);
2030 buffer_info->skb = NULL;
2031 }
2032
2033 memset(buffer_info, 0, sizeof(*buffer_info));
2034}
2035
2036static struct sk_buff *
2037lan743x_rx_trim_skb(struct sk_buff *skb, int frame_length)
2038{
2039 if (skb_linearize(skb)) {
2040 dev_kfree_skb_irq(skb);
2041 return NULL;
2042 }
2043 frame_length = max_t(int, 0, frame_length - ETH_FCS_LEN);
2044 if (skb->len > frame_length) {
2045 skb->tail -= skb->len - frame_length;
2046 skb->len = frame_length;
2047 }
2048 return skb;
2049}
2050
2051static int lan743x_rx_process_buffer(struct lan743x_rx *rx)
2052{
2053 int current_head_index = le32_to_cpu(*rx->head_cpu_ptr);
2054 struct lan743x_rx_descriptor *descriptor, *desc_ext;
2055 struct net_device *netdev = rx->adapter->netdev;
2056 int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
2057 struct lan743x_rx_buffer_info *buffer_info;
2058 int frame_length, buffer_length;
2059 int extension_index = -1;
2060 bool is_last, is_first;
2061 struct sk_buff *skb;
2062
2063 if (current_head_index < 0 || current_head_index >= rx->ring_size)
2064 goto done;
2065
2066 if (rx->last_head < 0 || rx->last_head >= rx->ring_size)
2067 goto done;
2068
2069 if (rx->last_head == current_head_index)
2070 goto done;
2071
2072 descriptor = &rx->ring_cpu_ptr[rx->last_head];
2073 if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_OWN_)
2074 goto done;
2075 buffer_info = &rx->buffer_info[rx->last_head];
2076
2077 is_last = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_;
2078 is_first = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_FS_;
2079
2080 if (is_last && le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_EXT_) {
2081 /* extension is expected to follow */
2082 int index = lan743x_rx_next_index(rx, rx->last_head);
2083
2084 if (index == current_head_index)
2085 /* extension not yet available */
2086 goto done;
2087 desc_ext = &rx->ring_cpu_ptr[index];
2088 if (le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_OWN_)
2089 /* extension not yet available */
2090 goto done;
2091 if (!(le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_EXT_))
2092 goto move_forward;
2093 extension_index = index;
2094 }
2095
2096 /* Only the last buffer in a multi-buffer frame contains the total frame
2097 * length. The chip occasionally sends more buffers than strictly
2098 * required to reach the total frame length.
2099 * Handle this by adding all buffers to the skb in their entirety.
2100 * Once the real frame length is known, trim the skb.
2101 */
2102 frame_length =
2103 RX_DESC_DATA0_FRAME_LENGTH_GET_(le32_to_cpu(descriptor->data0));
2104 buffer_length = buffer_info->buffer_length;
2105
2106 netdev_dbg(netdev, "%s%schunk: %d/%d",
2107 is_first ? "first " : " ",
2108 is_last ? "last " : " ",
2109 frame_length, buffer_length);
2110
2111 /* save existing skb, allocate new skb and map to dma */
2112 skb = buffer_info->skb;
2113 if (lan743x_rx_init_ring_element(rx, rx->last_head)) {
2114 /* failed to allocate next skb.
2115 * Memory is very low.
2116 * Drop this packet and reuse buffer.
2117 */
2118 lan743x_rx_reuse_ring_element(rx, rx->last_head);
2119 /* drop packet that was being assembled */
2120 dev_kfree_skb_irq(rx->skb_head);
2121 rx->skb_head = NULL;
2122 goto process_extension;
2123 }
2124
2125 /* add buffers to skb via skb->frag_list */
2126 if (is_first) {
2127 skb_reserve(skb, RX_HEAD_PADDING);
2128 skb_put(skb, buffer_length - RX_HEAD_PADDING);
2129 if (rx->skb_head)
2130 dev_kfree_skb_irq(rx->skb_head);
2131 rx->skb_head = skb;
2132 } else if (rx->skb_head) {
2133 skb_put(skb, buffer_length);
2134 if (skb_shinfo(rx->skb_head)->frag_list)
2135 rx->skb_tail->next = skb;
2136 else
2137 skb_shinfo(rx->skb_head)->frag_list = skb;
2138 rx->skb_tail = skb;
2139 rx->skb_head->len += skb->len;
2140 rx->skb_head->data_len += skb->len;
2141 rx->skb_head->truesize += skb->truesize;
2142 } else {
2143 /* packet to assemble has already been dropped because one or
2144 * more of its buffers could not be allocated
2145 */
2146 netdev_dbg(netdev, "drop buffer intended for dropped packet");
2147 dev_kfree_skb_irq(skb);
2148 }
2149
2150process_extension:
2151 if (extension_index >= 0) {
2152 u32 ts_sec;
2153 u32 ts_nsec;
2154
2155 ts_sec = le32_to_cpu(desc_ext->data1);
2156 ts_nsec = (le32_to_cpu(desc_ext->data2) &
2157 RX_DESC_DATA2_TS_NS_MASK_);
2158 if (rx->skb_head)
2159 skb_hwtstamps(rx->skb_head)->hwtstamp =
2160 ktime_set(ts_sec, ts_nsec);
2161 lan743x_rx_reuse_ring_element(rx, extension_index);
2162 rx->last_head = extension_index;
2163 netdev_dbg(netdev, "process extension");
2164 }
2165
2166 if (is_last && rx->skb_head)
2167 rx->skb_head = lan743x_rx_trim_skb(rx->skb_head, frame_length);
2168
2169 if (is_last && rx->skb_head) {
2170 rx->skb_head->protocol = eth_type_trans(rx->skb_head,
2171 rx->adapter->netdev);
2172 netdev_dbg(netdev, "sending %d byte frame to OS",
2173 rx->skb_head->len);
2174 napi_gro_receive(&rx->napi, rx->skb_head);
2175 rx->skb_head = NULL;
2176 }
2177
2178move_forward:
2179 /* push tail and head forward */
2180 rx->last_tail = rx->last_head;
2181 rx->last_head = lan743x_rx_next_index(rx, rx->last_head);
2182 result = RX_PROCESS_RESULT_BUFFER_RECEIVED;
2183done:
2184 return result;
2185}
2186
2187static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight)
2188{
2189 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi);
2190 struct lan743x_adapter *adapter = rx->adapter;
2191 int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
2192 u32 rx_tail_flags = 0;
2193 int count;
2194
2195 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) {
2196 /* clear int status bit before reading packet */
2197 lan743x_csr_write(adapter, DMAC_INT_STS,
2198 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2199 }
2200 for (count = 0; count < weight; count++) {
2201 result = lan743x_rx_process_buffer(rx);
2202 if (result == RX_PROCESS_RESULT_NOTHING_TO_DO)
2203 break;
2204 }
2205 rx->frame_count += count;
2206 if (count == weight || result == RX_PROCESS_RESULT_BUFFER_RECEIVED)
2207 return weight;
2208
2209 if (!napi_complete_done(napi, count))
2210 return count;
2211
2212 /* re-arm interrupts, must write to rx tail on some chip variants */
2213 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
2214 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_;
2215 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) {
2216 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_;
2217 } else {
2218 lan743x_csr_write(adapter, INT_EN_SET,
2219 INT_BIT_DMA_RX_(rx->channel_number));
2220 }
2221
2222 if (rx_tail_flags)
2223 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2224 rx_tail_flags | rx->last_tail);
2225
2226 return count;
2227}
2228
2229static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx)
2230{
2231 if (rx->buffer_info && rx->ring_cpu_ptr) {
2232 int index;
2233
2234 for (index = 0; index < rx->ring_size; index++)
2235 lan743x_rx_release_ring_element(rx, index);
2236 }
2237
2238 if (rx->head_cpu_ptr) {
2239 dma_free_coherent(&rx->adapter->pdev->dev,
2240 sizeof(*rx->head_cpu_ptr), rx->head_cpu_ptr,
2241 rx->head_dma_ptr);
2242 rx->head_cpu_ptr = NULL;
2243 rx->head_dma_ptr = 0;
2244 }
2245
2246 kfree(rx->buffer_info);
2247 rx->buffer_info = NULL;
2248
2249 if (rx->ring_cpu_ptr) {
2250 dma_free_coherent(&rx->adapter->pdev->dev,
2251 rx->ring_allocation_size, rx->ring_cpu_ptr,
2252 rx->ring_dma_ptr);
2253 rx->ring_allocation_size = 0;
2254 rx->ring_cpu_ptr = NULL;
2255 rx->ring_dma_ptr = 0;
2256 }
2257
2258 rx->ring_size = 0;
2259 rx->last_head = 0;
2260}
2261
2262static int lan743x_rx_ring_init(struct lan743x_rx *rx)
2263{
2264 size_t ring_allocation_size = 0;
2265 dma_addr_t dma_ptr = 0;
2266 void *cpu_ptr = NULL;
2267 int ret = -ENOMEM;
2268 int index = 0;
2269
2270 rx->ring_size = LAN743X_RX_RING_SIZE;
2271 if (rx->ring_size <= 1) {
2272 ret = -EINVAL;
2273 goto cleanup;
2274 }
2275 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) {
2276 ret = -EINVAL;
2277 goto cleanup;
2278 }
2279 ring_allocation_size = ALIGN(rx->ring_size *
2280 sizeof(struct lan743x_rx_descriptor),
2281 PAGE_SIZE);
2282 dma_ptr = 0;
2283 cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev,
2284 ring_allocation_size, &dma_ptr, GFP_KERNEL);
2285 if (!cpu_ptr) {
2286 ret = -ENOMEM;
2287 goto cleanup;
2288 }
2289 rx->ring_allocation_size = ring_allocation_size;
2290 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr;
2291 rx->ring_dma_ptr = dma_ptr;
2292
2293 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info),
2294 GFP_KERNEL);
2295 if (!cpu_ptr) {
2296 ret = -ENOMEM;
2297 goto cleanup;
2298 }
2299 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr;
2300 dma_ptr = 0;
2301 cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev,
2302 sizeof(*rx->head_cpu_ptr), &dma_ptr,
2303 GFP_KERNEL);
2304 if (!cpu_ptr) {
2305 ret = -ENOMEM;
2306 goto cleanup;
2307 }
2308
2309 rx->head_cpu_ptr = cpu_ptr;
2310 rx->head_dma_ptr = dma_ptr;
2311 if (rx->head_dma_ptr & 0x3) {
2312 ret = -ENOMEM;
2313 goto cleanup;
2314 }
2315
2316 rx->last_head = 0;
2317 for (index = 0; index < rx->ring_size; index++) {
2318 ret = lan743x_rx_init_ring_element(rx, index);
2319 if (ret)
2320 goto cleanup;
2321 }
2322 return 0;
2323
2324cleanup:
2325 lan743x_rx_ring_cleanup(rx);
2326 return ret;
2327}
2328
2329static void lan743x_rx_close(struct lan743x_rx *rx)
2330{
2331 struct lan743x_adapter *adapter = rx->adapter;
2332
2333 lan743x_csr_write(adapter, FCT_RX_CTL,
2334 FCT_RX_CTL_DIS_(rx->channel_number));
2335 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2336 FCT_RX_CTL_EN_(rx->channel_number),
2337 0, 1000, 20000, 100);
2338
2339 lan743x_csr_write(adapter, DMAC_CMD,
2340 DMAC_CMD_STOP_R_(rx->channel_number));
2341 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number);
2342
2343 lan743x_csr_write(adapter, DMAC_INT_EN_CLR,
2344 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2345 lan743x_csr_write(adapter, INT_EN_CLR,
2346 INT_BIT_DMA_RX_(rx->channel_number));
2347 napi_disable(&rx->napi);
2348
2349 netif_napi_del(&rx->napi);
2350
2351 lan743x_rx_ring_cleanup(rx);
2352}
2353
2354static int lan743x_rx_open(struct lan743x_rx *rx)
2355{
2356 struct lan743x_adapter *adapter = rx->adapter;
2357 u32 data = 0;
2358 int ret;
2359
2360 rx->frame_count = 0;
2361 ret = lan743x_rx_ring_init(rx);
2362 if (ret)
2363 goto return_error;
2364
2365 netif_napi_add(adapter->netdev,
2366 &rx->napi, lan743x_rx_napi_poll,
2367 NAPI_POLL_WEIGHT);
2368
2369 lan743x_csr_write(adapter, DMAC_CMD,
2370 DMAC_CMD_RX_SWR_(rx->channel_number));
2371 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
2372 DMAC_CMD_RX_SWR_(rx->channel_number),
2373 0, 1000, 20000, 100);
2374
2375 /* set ring base address */
2376 lan743x_csr_write(adapter,
2377 RX_BASE_ADDRH(rx->channel_number),
2378 DMA_ADDR_HIGH32(rx->ring_dma_ptr));
2379 lan743x_csr_write(adapter,
2380 RX_BASE_ADDRL(rx->channel_number),
2381 DMA_ADDR_LOW32(rx->ring_dma_ptr));
2382
2383 /* set rx write back address */
2384 lan743x_csr_write(adapter,
2385 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number),
2386 DMA_ADDR_HIGH32(rx->head_dma_ptr));
2387 lan743x_csr_write(adapter,
2388 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number),
2389 DMA_ADDR_LOW32(rx->head_dma_ptr));
2390 data = RX_CFG_A_RX_HP_WB_EN_;
2391 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
2392 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ |
2393 RX_CFG_A_RX_WB_THRES_SET_(0x7) |
2394 RX_CFG_A_RX_PF_THRES_SET_(16) |
2395 RX_CFG_A_RX_PF_PRI_THRES_SET_(4));
2396 }
2397
2398 /* set RX_CFG_A */
2399 lan743x_csr_write(adapter,
2400 RX_CFG_A(rx->channel_number), data);
2401
2402 /* set RX_CFG_B */
2403 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number));
2404 data &= ~RX_CFG_B_RX_PAD_MASK_;
2405 if (!RX_HEAD_PADDING)
2406 data |= RX_CFG_B_RX_PAD_0_;
2407 else
2408 data |= RX_CFG_B_RX_PAD_2_;
2409 data &= ~RX_CFG_B_RX_RING_LEN_MASK_;
2410 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_);
2411 data |= RX_CFG_B_TS_ALL_RX_;
2412 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
2413 data |= RX_CFG_B_RDMABL_512_;
2414
2415 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data);
2416 rx->vector_flags = lan743x_intr_get_vector_flags(adapter,
2417 INT_BIT_DMA_RX_
2418 (rx->channel_number));
2419
2420 /* set RX_CFG_C */
2421 data = 0;
2422 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
2423 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_;
2424 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
2425 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_;
2426 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
2427 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_;
2428 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
2429 data |= RX_CFG_C_RX_INT_EN_R2C_;
2430 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data);
2431
2432 rx->last_tail = ((u32)(rx->ring_size - 1));
2433 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2434 rx->last_tail);
2435 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number));
2436 if (rx->last_head) {
2437 ret = -EIO;
2438 goto napi_delete;
2439 }
2440
2441 napi_enable(&rx->napi);
2442
2443 lan743x_csr_write(adapter, INT_EN_SET,
2444 INT_BIT_DMA_RX_(rx->channel_number));
2445 lan743x_csr_write(adapter, DMAC_INT_STS,
2446 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2447 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
2448 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2449 lan743x_csr_write(adapter, DMAC_CMD,
2450 DMAC_CMD_START_R_(rx->channel_number));
2451
2452 /* initialize fifo */
2453 lan743x_csr_write(adapter, FCT_RX_CTL,
2454 FCT_RX_CTL_RESET_(rx->channel_number));
2455 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2456 FCT_RX_CTL_RESET_(rx->channel_number),
2457 0, 1000, 20000, 100);
2458 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number),
2459 FCT_FLOW_CTL_REQ_EN_ |
2460 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) |
2461 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA));
2462
2463 /* enable fifo */
2464 lan743x_csr_write(adapter, FCT_RX_CTL,
2465 FCT_RX_CTL_EN_(rx->channel_number));
2466 return 0;
2467
2468napi_delete:
2469 netif_napi_del(&rx->napi);
2470 lan743x_rx_ring_cleanup(rx);
2471
2472return_error:
2473 return ret;
2474}
2475
2476static int lan743x_netdev_close(struct net_device *netdev)
2477{
2478 struct lan743x_adapter *adapter = netdev_priv(netdev);
2479 int index;
2480
2481 lan743x_tx_close(&adapter->tx[0]);
2482
2483 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++)
2484 lan743x_rx_close(&adapter->rx[index]);
2485
2486 lan743x_ptp_close(adapter);
2487
2488 lan743x_phy_close(adapter);
2489
2490 lan743x_mac_close(adapter);
2491
2492 lan743x_intr_close(adapter);
2493
2494 return 0;
2495}
2496
2497static int lan743x_netdev_open(struct net_device *netdev)
2498{
2499 struct lan743x_adapter *adapter = netdev_priv(netdev);
2500 int index;
2501 int ret;
2502
2503 ret = lan743x_intr_open(adapter);
2504 if (ret)
2505 goto return_error;
2506
2507 ret = lan743x_mac_open(adapter);
2508 if (ret)
2509 goto close_intr;
2510
2511 ret = lan743x_phy_open(adapter);
2512 if (ret)
2513 goto close_mac;
2514
2515 ret = lan743x_ptp_open(adapter);
2516 if (ret)
2517 goto close_phy;
2518
2519 lan743x_rfe_open(adapter);
2520
2521 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2522 ret = lan743x_rx_open(&adapter->rx[index]);
2523 if (ret)
2524 goto close_rx;
2525 }
2526
2527 ret = lan743x_tx_open(&adapter->tx[0]);
2528 if (ret)
2529 goto close_rx;
2530
2531 return 0;
2532
2533close_rx:
2534 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2535 if (adapter->rx[index].ring_cpu_ptr)
2536 lan743x_rx_close(&adapter->rx[index]);
2537 }
2538 lan743x_ptp_close(adapter);
2539
2540close_phy:
2541 lan743x_phy_close(adapter);
2542
2543close_mac:
2544 lan743x_mac_close(adapter);
2545
2546close_intr:
2547 lan743x_intr_close(adapter);
2548
2549return_error:
2550 netif_warn(adapter, ifup, adapter->netdev,
2551 "Error opening LAN743x\n");
2552 return ret;
2553}
2554
2555static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb,
2556 struct net_device *netdev)
2557{
2558 struct lan743x_adapter *adapter = netdev_priv(netdev);
2559
2560 return lan743x_tx_xmit_frame(&adapter->tx[0], skb);
2561}
2562
2563static int lan743x_netdev_ioctl(struct net_device *netdev,
2564 struct ifreq *ifr, int cmd)
2565{
2566 if (!netif_running(netdev))
2567 return -EINVAL;
2568 if (cmd == SIOCSHWTSTAMP)
2569 return lan743x_ptp_ioctl(netdev, ifr, cmd);
2570 return phy_mii_ioctl(netdev->phydev, ifr, cmd);
2571}
2572
2573static void lan743x_netdev_set_multicast(struct net_device *netdev)
2574{
2575 struct lan743x_adapter *adapter = netdev_priv(netdev);
2576
2577 lan743x_rfe_set_multicast(adapter);
2578}
2579
2580static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu)
2581{
2582 struct lan743x_adapter *adapter = netdev_priv(netdev);
2583 int ret = 0;
2584
2585 ret = lan743x_mac_set_mtu(adapter, new_mtu);
2586 if (!ret)
2587 netdev->mtu = new_mtu;
2588 return ret;
2589}
2590
2591static void lan743x_netdev_get_stats64(struct net_device *netdev,
2592 struct rtnl_link_stats64 *stats)
2593{
2594 struct lan743x_adapter *adapter = netdev_priv(netdev);
2595
2596 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES);
2597 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES);
2598 stats->rx_bytes = lan743x_csr_read(adapter,
2599 STAT_RX_UNICAST_BYTE_COUNT) +
2600 lan743x_csr_read(adapter,
2601 STAT_RX_BROADCAST_BYTE_COUNT) +
2602 lan743x_csr_read(adapter,
2603 STAT_RX_MULTICAST_BYTE_COUNT);
2604 stats->tx_bytes = lan743x_csr_read(adapter,
2605 STAT_TX_UNICAST_BYTE_COUNT) +
2606 lan743x_csr_read(adapter,
2607 STAT_TX_BROADCAST_BYTE_COUNT) +
2608 lan743x_csr_read(adapter,
2609 STAT_TX_MULTICAST_BYTE_COUNT);
2610 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) +
2611 lan743x_csr_read(adapter,
2612 STAT_RX_ALIGNMENT_ERRORS) +
2613 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) +
2614 lan743x_csr_read(adapter,
2615 STAT_RX_UNDERSIZE_FRAME_ERRORS) +
2616 lan743x_csr_read(adapter,
2617 STAT_RX_OVERSIZE_FRAME_ERRORS);
2618 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) +
2619 lan743x_csr_read(adapter,
2620 STAT_TX_EXCESS_DEFERRAL_ERRORS) +
2621 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS);
2622 stats->rx_dropped = lan743x_csr_read(adapter,
2623 STAT_RX_DROPPED_FRAMES);
2624 stats->tx_dropped = lan743x_csr_read(adapter,
2625 STAT_TX_EXCESSIVE_COLLISION);
2626 stats->multicast = lan743x_csr_read(adapter,
2627 STAT_RX_MULTICAST_FRAMES) +
2628 lan743x_csr_read(adapter,
2629 STAT_TX_MULTICAST_FRAMES);
2630 stats->collisions = lan743x_csr_read(adapter,
2631 STAT_TX_SINGLE_COLLISIONS) +
2632 lan743x_csr_read(adapter,
2633 STAT_TX_MULTIPLE_COLLISIONS) +
2634 lan743x_csr_read(adapter,
2635 STAT_TX_LATE_COLLISIONS);
2636}
2637
2638static int lan743x_netdev_set_mac_address(struct net_device *netdev,
2639 void *addr)
2640{
2641 struct lan743x_adapter *adapter = netdev_priv(netdev);
2642 struct sockaddr *sock_addr = addr;
2643 int ret;
2644
2645 ret = eth_prepare_mac_addr_change(netdev, sock_addr);
2646 if (ret)
2647 return ret;
2648 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data);
2649 lan743x_mac_set_address(adapter, sock_addr->sa_data);
2650 lan743x_rfe_update_mac_address(adapter);
2651 return 0;
2652}
2653
2654static const struct net_device_ops lan743x_netdev_ops = {
2655 .ndo_open = lan743x_netdev_open,
2656 .ndo_stop = lan743x_netdev_close,
2657 .ndo_start_xmit = lan743x_netdev_xmit_frame,
2658 .ndo_do_ioctl = lan743x_netdev_ioctl,
2659 .ndo_set_rx_mode = lan743x_netdev_set_multicast,
2660 .ndo_change_mtu = lan743x_netdev_change_mtu,
2661 .ndo_get_stats64 = lan743x_netdev_get_stats64,
2662 .ndo_set_mac_address = lan743x_netdev_set_mac_address,
2663};
2664
2665static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter)
2666{
2667 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
2668}
2669
2670static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter)
2671{
2672 mdiobus_unregister(adapter->mdiobus);
2673}
2674
2675static void lan743x_full_cleanup(struct lan743x_adapter *adapter)
2676{
2677 unregister_netdev(adapter->netdev);
2678
2679 lan743x_mdiobus_cleanup(adapter);
2680 lan743x_hardware_cleanup(adapter);
2681 lan743x_pci_cleanup(adapter);
2682}
2683
2684static int lan743x_hardware_init(struct lan743x_adapter *adapter,
2685 struct pci_dev *pdev)
2686{
2687 struct lan743x_tx *tx;
2688 int index;
2689 int ret;
2690
2691 adapter->intr.irq = adapter->pdev->irq;
2692 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
2693
2694 ret = lan743x_gpio_init(adapter);
2695 if (ret)
2696 return ret;
2697
2698 ret = lan743x_mac_init(adapter);
2699 if (ret)
2700 return ret;
2701
2702 ret = lan743x_phy_init(adapter);
2703 if (ret)
2704 return ret;
2705
2706 ret = lan743x_ptp_init(adapter);
2707 if (ret)
2708 return ret;
2709
2710 lan743x_rfe_update_mac_address(adapter);
2711
2712 ret = lan743x_dmac_init(adapter);
2713 if (ret)
2714 return ret;
2715
2716 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2717 adapter->rx[index].adapter = adapter;
2718 adapter->rx[index].channel_number = index;
2719 }
2720
2721 tx = &adapter->tx[0];
2722 tx->adapter = adapter;
2723 tx->channel_number = 0;
2724 spin_lock_init(&tx->ring_lock);
2725 return 0;
2726}
2727
2728static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
2729{
2730 int ret;
2731
2732 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev);
2733 if (!(adapter->mdiobus)) {
2734 ret = -ENOMEM;
2735 goto return_error;
2736 }
2737
2738 adapter->mdiobus->priv = (void *)adapter;
2739 adapter->mdiobus->read = lan743x_mdiobus_read;
2740 adapter->mdiobus->write = lan743x_mdiobus_write;
2741 adapter->mdiobus->name = "lan743x-mdiobus";
2742 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE,
2743 "pci-%s", pci_name(adapter->pdev));
2744
2745 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_)
2746 /* LAN7430 uses internal phy at address 1 */
2747 adapter->mdiobus->phy_mask = ~(u32)BIT(1);
2748
2749 /* register mdiobus */
2750 ret = mdiobus_register(adapter->mdiobus);
2751 if (ret < 0)
2752 goto return_error;
2753 return 0;
2754
2755return_error:
2756 return ret;
2757}
2758
2759/* lan743x_pcidev_probe - Device Initialization Routine
2760 * @pdev: PCI device information struct
2761 * @id: entry in lan743x_pci_tbl
2762 *
2763 * Returns 0 on success, negative on failure
2764 *
2765 * initializes an adapter identified by a pci_dev structure.
2766 * The OS initialization, configuring of the adapter private structure,
2767 * and a hardware reset occur.
2768 **/
2769static int lan743x_pcidev_probe(struct pci_dev *pdev,
2770 const struct pci_device_id *id)
2771{
2772 struct lan743x_adapter *adapter = NULL;
2773 struct net_device *netdev = NULL;
2774 int ret = -ENODEV;
2775
2776 netdev = devm_alloc_etherdev(&pdev->dev,
2777 sizeof(struct lan743x_adapter));
2778 if (!netdev)
2779 goto return_error;
2780
2781 SET_NETDEV_DEV(netdev, &pdev->dev);
2782 pci_set_drvdata(pdev, netdev);
2783 adapter = netdev_priv(netdev);
2784 adapter->netdev = netdev;
2785 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE |
2786 NETIF_MSG_LINK | NETIF_MSG_IFUP |
2787 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED;
2788 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
2789
2790 of_get_mac_address(pdev->dev.of_node, adapter->mac_address);
2791
2792 ret = lan743x_pci_init(adapter, pdev);
2793 if (ret)
2794 goto return_error;
2795
2796 ret = lan743x_csr_init(adapter);
2797 if (ret)
2798 goto cleanup_pci;
2799
2800 ret = lan743x_hardware_init(adapter, pdev);
2801 if (ret)
2802 goto cleanup_pci;
2803
2804 ret = lan743x_mdiobus_init(adapter);
2805 if (ret)
2806 goto cleanup_hardware;
2807
2808 adapter->netdev->netdev_ops = &lan743x_netdev_ops;
2809 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops;
2810 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2811 adapter->netdev->hw_features = adapter->netdev->features;
2812
2813 /* carrier off reporting is important to ethtool even BEFORE open */
2814 netif_carrier_off(netdev);
2815
2816 ret = register_netdev(adapter->netdev);
2817 if (ret < 0)
2818 goto cleanup_mdiobus;
2819 return 0;
2820
2821cleanup_mdiobus:
2822 lan743x_mdiobus_cleanup(adapter);
2823
2824cleanup_hardware:
2825 lan743x_hardware_cleanup(adapter);
2826
2827cleanup_pci:
2828 lan743x_pci_cleanup(adapter);
2829
2830return_error:
2831 pr_warn("Initialization failed\n");
2832 return ret;
2833}
2834
2835/**
2836 * lan743x_pcidev_remove - Device Removal Routine
2837 * @pdev: PCI device information struct
2838 *
2839 * this is called by the PCI subsystem to alert the driver
2840 * that it should release a PCI device. This could be caused by a
2841 * Hot-Plug event, or because the driver is going to be removed from
2842 * memory.
2843 **/
2844static void lan743x_pcidev_remove(struct pci_dev *pdev)
2845{
2846 struct net_device *netdev = pci_get_drvdata(pdev);
2847 struct lan743x_adapter *adapter = netdev_priv(netdev);
2848
2849 lan743x_full_cleanup(adapter);
2850}
2851
2852static void lan743x_pcidev_shutdown(struct pci_dev *pdev)
2853{
2854 struct net_device *netdev = pci_get_drvdata(pdev);
2855 struct lan743x_adapter *adapter = netdev_priv(netdev);
2856
2857 rtnl_lock();
2858 netif_device_detach(netdev);
2859
2860 /* close netdev when netdev is at running state.
2861 * For instance, it is true when system goes to sleep by pm-suspend
2862 * However, it is false when system goes to sleep by suspend GUI menu
2863 */
2864 if (netif_running(netdev))
2865 lan743x_netdev_close(netdev);
2866 rtnl_unlock();
2867
2868#ifdef CONFIG_PM
2869 pci_save_state(pdev);
2870#endif
2871
2872 /* clean up lan743x portion */
2873 lan743x_hardware_cleanup(adapter);
2874}
2875
2876#ifdef CONFIG_PM_SLEEP
2877static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len)
2878{
2879 return bitrev16(crc16(0xFFFF, buf, len));
2880}
2881
2882static void lan743x_pm_set_wol(struct lan743x_adapter *adapter)
2883{
2884 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
2885 const u8 ipv6_multicast[3] = { 0x33, 0x33 };
2886 const u8 arp_type[2] = { 0x08, 0x06 };
2887 int mask_index;
2888 u32 pmtctl;
2889 u32 wucsr;
2890 u32 macrx;
2891 u16 crc;
2892
2893 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++)
2894 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0);
2895
2896 /* clear wake settings */
2897 pmtctl = lan743x_csr_read(adapter, PMT_CTL);
2898 pmtctl |= PMT_CTL_WUPS_MASK_;
2899 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ |
2900 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ |
2901 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_);
2902
2903 macrx = lan743x_csr_read(adapter, MAC_RX);
2904
2905 wucsr = 0;
2906 mask_index = 0;
2907
2908 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_;
2909
2910 if (adapter->wolopts & WAKE_PHY) {
2911 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_;
2912 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_;
2913 }
2914 if (adapter->wolopts & WAKE_MAGIC) {
2915 wucsr |= MAC_WUCSR_MPEN_;
2916 macrx |= MAC_RX_RXEN_;
2917 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2918 }
2919 if (adapter->wolopts & WAKE_UCAST) {
2920 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_;
2921 macrx |= MAC_RX_RXEN_;
2922 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2923 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2924 }
2925 if (adapter->wolopts & WAKE_BCAST) {
2926 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_;
2927 macrx |= MAC_RX_RXEN_;
2928 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2929 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2930 }
2931 if (adapter->wolopts & WAKE_MCAST) {
2932 /* IPv4 multicast */
2933 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3);
2934 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
2935 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
2936 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
2937 (crc & MAC_WUF_CFG_CRC16_MASK_));
2938 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7);
2939 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
2940 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
2941 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
2942 mask_index++;
2943
2944 /* IPv6 multicast */
2945 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2);
2946 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
2947 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
2948 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
2949 (crc & MAC_WUF_CFG_CRC16_MASK_));
2950 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3);
2951 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
2952 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
2953 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
2954 mask_index++;
2955
2956 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
2957 macrx |= MAC_RX_RXEN_;
2958 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2959 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2960 }
2961 if (adapter->wolopts & WAKE_ARP) {
2962 /* set MAC_WUF_CFG & WUF_MASK
2963 * for packettype (offset 12,13) = ARP (0x0806)
2964 */
2965 crc = lan743x_pm_wakeframe_crc16(arp_type, 2);
2966 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
2967 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ |
2968 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
2969 (crc & MAC_WUF_CFG_CRC16_MASK_));
2970 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000);
2971 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
2972 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
2973 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
2974 mask_index++;
2975
2976 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
2977 macrx |= MAC_RX_RXEN_;
2978 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2979 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2980 }
2981
2982 lan743x_csr_write(adapter, MAC_WUCSR, wucsr);
2983 lan743x_csr_write(adapter, PMT_CTL, pmtctl);
2984 lan743x_csr_write(adapter, MAC_RX, macrx);
2985}
2986
2987static int lan743x_pm_suspend(struct device *dev)
2988{
2989 struct pci_dev *pdev = to_pci_dev(dev);
2990 struct net_device *netdev = pci_get_drvdata(pdev);
2991 struct lan743x_adapter *adapter = netdev_priv(netdev);
2992
2993 lan743x_pcidev_shutdown(pdev);
2994
2995 /* clear all wakes */
2996 lan743x_csr_write(adapter, MAC_WUCSR, 0);
2997 lan743x_csr_write(adapter, MAC_WUCSR2, 0);
2998 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF);
2999
3000 if (adapter->wolopts)
3001 lan743x_pm_set_wol(adapter);
3002
3003 /* Host sets PME_En, put D3hot */
3004 return pci_prepare_to_sleep(pdev);
3005}
3006
3007static int lan743x_pm_resume(struct device *dev)
3008{
3009 struct pci_dev *pdev = to_pci_dev(dev);
3010 struct net_device *netdev = pci_get_drvdata(pdev);
3011 struct lan743x_adapter *adapter = netdev_priv(netdev);
3012 int ret;
3013
3014 pci_set_power_state(pdev, PCI_D0);
3015 pci_restore_state(pdev);
3016 pci_save_state(pdev);
3017
3018 ret = lan743x_hardware_init(adapter, pdev);
3019 if (ret) {
3020 netif_err(adapter, probe, adapter->netdev,
3021 "lan743x_hardware_init returned %d\n", ret);
3022 }
3023
3024 /* open netdev when netdev is at running state while resume.
3025 * For instance, it is true when system wakesup after pm-suspend
3026 * However, it is false when system wakes up after suspend GUI menu
3027 */
3028 if (netif_running(netdev))
3029 lan743x_netdev_open(netdev);
3030
3031 netif_device_attach(netdev);
3032
3033 return 0;
3034}
3035
3036static const struct dev_pm_ops lan743x_pm_ops = {
3037 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume)
3038};
3039#endif /* CONFIG_PM_SLEEP */
3040
3041static const struct pci_device_id lan743x_pcidev_tbl[] = {
3042 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) },
3043 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) },
3044 { 0, }
3045};
3046
3047MODULE_DEVICE_TABLE(pci, lan743x_pcidev_tbl);
3048
3049static struct pci_driver lan743x_pcidev_driver = {
3050 .name = DRIVER_NAME,
3051 .id_table = lan743x_pcidev_tbl,
3052 .probe = lan743x_pcidev_probe,
3053 .remove = lan743x_pcidev_remove,
3054#ifdef CONFIG_PM_SLEEP
3055 .driver.pm = &lan743x_pm_ops,
3056#endif
3057 .shutdown = lan743x_pcidev_shutdown,
3058};
3059
3060module_pci_driver(lan743x_pcidev_driver);
3061
3062MODULE_AUTHOR(DRIVER_AUTHOR);
3063MODULE_DESCRIPTION(DRIVER_DESC);
3064MODULE_LICENSE("GPL");