1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /* Copyright (C) 2018 Microchip Technology Inc. */
4 #include <linux/module.h>
6 #include <linux/netdevice.h>
7 #include <linux/etherdevice.h>
8 #include <linux/crc32.h>
9 #include <linux/microchipphy.h>
10 #include <linux/net_tstamp.h>
11 #include <linux/phy.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/iopoll.h>
14 #include <linux/crc16.h>
15 #include "lan743x_main.h"
16 #include "lan743x_ethtool.h"
18 static void lan743x_pci_cleanup(struct lan743x_adapter *adapter)
20 pci_release_selected_regions(adapter->pdev,
21 pci_select_bars(adapter->pdev,
23 pci_disable_device(adapter->pdev);
26 static int lan743x_pci_init(struct lan743x_adapter *adapter,
29 unsigned long bars = 0;
33 ret = pci_enable_device_mem(pdev);
37 netif_info(adapter, probe, adapter->netdev,
38 "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n",
39 pdev->vendor, pdev->device);
40 bars = pci_select_bars(pdev, IORESOURCE_MEM);
41 if (!test_bit(0, &bars))
44 ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME);
52 pci_disable_device(adapter->pdev);
58 u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset)
60 return ioread32(&adapter->csr.csr_address[offset]);
63 void lan743x_csr_write(struct lan743x_adapter *adapter, int offset,
66 iowrite32(data, &adapter->csr.csr_address[offset]);
69 #define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset)
71 static int lan743x_csr_light_reset(struct lan743x_adapter *adapter)
75 data = lan743x_csr_read(adapter, HW_CFG);
77 lan743x_csr_write(adapter, HW_CFG, data);
79 return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data,
80 !(data & HW_CFG_LRST_), 100000, 10000000);
83 static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter,
84 int offset, u32 bit_mask,
85 int target_value, int usleep_min,
86 int usleep_max, int count)
90 return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data,
91 target_value == ((data & bit_mask) ? 1 : 0),
92 usleep_max, usleep_min * count);
95 static int lan743x_csr_init(struct lan743x_adapter *adapter)
97 struct lan743x_csr *csr = &adapter->csr;
98 resource_size_t bar_start, bar_length;
101 bar_start = pci_resource_start(adapter->pdev, 0);
102 bar_length = pci_resource_len(adapter->pdev, 0);
103 csr->csr_address = devm_ioremap(&adapter->pdev->dev,
104 bar_start, bar_length);
105 if (!csr->csr_address) {
110 csr->id_rev = lan743x_csr_read(adapter, ID_REV);
111 csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
112 netif_info(adapter, probe, adapter->netdev,
113 "ID_REV = 0x%08X, FPGA_REV = %d.%d\n",
114 csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev),
115 FPGA_REV_GET_MINOR_(csr->fpga_rev));
116 if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) {
121 csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
122 switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) {
123 case ID_REV_CHIP_REV_A0_:
124 csr->flags |= LAN743X_CSR_FLAG_IS_A0;
125 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
127 case ID_REV_CHIP_REV_B0_:
128 csr->flags |= LAN743X_CSR_FLAG_IS_B0;
132 result = lan743x_csr_light_reset(adapter);
140 static void lan743x_intr_software_isr(void *context)
142 struct lan743x_adapter *adapter = context;
143 struct lan743x_intr *intr = &adapter->intr;
146 int_sts = lan743x_csr_read(adapter, INT_STS);
147 if (int_sts & INT_BIT_SW_GP_) {
148 lan743x_csr_write(adapter, INT_STS, INT_BIT_SW_GP_);
149 intr->software_isr_flag = 1;
153 static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags)
155 struct lan743x_tx *tx = context;
156 struct lan743x_adapter *adapter = tx->adapter;
157 bool enable_flag = true;
160 int_en = lan743x_csr_read(adapter, INT_EN_SET);
161 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
162 lan743x_csr_write(adapter, INT_EN_CLR,
163 INT_BIT_DMA_TX_(tx->channel_number));
166 if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) {
167 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
171 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
172 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
174 dmac_int_sts = ioc_bit;
175 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
176 dmac_int_en = lan743x_csr_read(adapter,
179 dmac_int_en = ioc_bit;
181 dmac_int_en &= ioc_bit;
182 dmac_int_sts &= dmac_int_en;
183 if (dmac_int_sts & ioc_bit) {
184 napi_schedule(&tx->napi);
185 enable_flag = false;/* poll func will enable later */
191 lan743x_csr_write(adapter, INT_EN_SET,
192 INT_BIT_DMA_TX_(tx->channel_number));
195 static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags)
197 struct lan743x_rx *rx = context;
198 struct lan743x_adapter *adapter = rx->adapter;
199 bool enable_flag = true;
201 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
202 lan743x_csr_write(adapter, INT_EN_CLR,
203 INT_BIT_DMA_RX_(rx->channel_number));
206 if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) {
207 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number);
211 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
212 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
214 dmac_int_sts = rx_frame_bit;
215 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
216 dmac_int_en = lan743x_csr_read(adapter,
219 dmac_int_en = rx_frame_bit;
221 dmac_int_en &= rx_frame_bit;
222 dmac_int_sts &= dmac_int_en;
223 if (dmac_int_sts & rx_frame_bit) {
224 napi_schedule(&rx->napi);
225 enable_flag = false;/* poll funct will enable later */
231 lan743x_csr_write(adapter, INT_EN_SET,
232 INT_BIT_DMA_RX_(rx->channel_number));
236 static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
238 struct lan743x_adapter *adapter = context;
239 unsigned int channel;
241 if (int_sts & INT_BIT_ALL_RX_) {
242 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS;
244 u32 int_bit = INT_BIT_DMA_RX_(channel);
246 if (int_sts & int_bit) {
247 lan743x_rx_isr(&adapter->rx[channel],
253 if (int_sts & INT_BIT_ALL_TX_) {
254 for (channel = 0; channel < LAN743X_USED_TX_CHANNELS;
256 u32 int_bit = INT_BIT_DMA_TX_(channel);
258 if (int_sts & int_bit) {
259 lan743x_tx_isr(&adapter->tx[channel],
265 if (int_sts & INT_BIT_ALL_OTHER_) {
266 if (int_sts & INT_BIT_SW_GP_) {
267 lan743x_intr_software_isr(adapter);
268 int_sts &= ~INT_BIT_SW_GP_;
270 if (int_sts & INT_BIT_1588_) {
271 lan743x_ptp_isr(adapter);
272 int_sts &= ~INT_BIT_1588_;
276 lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
279 static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr)
281 struct lan743x_vector *vector = ptr;
282 struct lan743x_adapter *adapter = vector->adapter;
283 irqreturn_t result = IRQ_NONE;
287 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) {
288 int_sts = lan743x_csr_read(adapter, INT_STS);
289 } else if (vector->flags &
290 (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C |
291 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) {
292 int_sts = lan743x_csr_read(adapter, INT_STS_R2C);
294 /* use mask as implied status */
295 int_sts = vector->int_mask | INT_BIT_MAS_;
298 if (!(int_sts & INT_BIT_MAS_))
301 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR)
302 /* disable vector interrupt */
303 lan743x_csr_write(adapter,
305 INT_VEC_EN_(vector->vector_index));
307 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR)
308 /* disable master interrupt */
309 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
311 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) {
312 int_enables = lan743x_csr_read(adapter, INT_EN_SET);
314 /* use vector mask as implied enable mask */
315 int_enables = vector->int_mask;
318 int_sts &= int_enables;
319 int_sts &= vector->int_mask;
321 if (vector->handler) {
322 vector->handler(vector->context,
323 int_sts, vector->flags);
325 /* disable interrupts on this vector */
326 lan743x_csr_write(adapter, INT_EN_CLR,
329 result = IRQ_HANDLED;
332 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET)
333 /* enable master interrupt */
334 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
336 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET)
337 /* enable vector interrupt */
338 lan743x_csr_write(adapter,
340 INT_VEC_EN_(vector->vector_index));
345 static int lan743x_intr_test_isr(struct lan743x_adapter *adapter)
347 struct lan743x_intr *intr = &adapter->intr;
348 int result = -ENODEV;
351 intr->software_isr_flag = 0;
353 /* enable interrupt */
354 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_);
356 /* activate interrupt here */
357 lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_);
358 while ((timeout > 0) && (!(intr->software_isr_flag))) {
359 usleep_range(1000, 20000);
363 if (intr->software_isr_flag)
366 /* disable interrupts */
367 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
371 static int lan743x_intr_register_isr(struct lan743x_adapter *adapter,
372 int vector_index, u32 flags,
374 lan743x_vector_handler handler,
377 struct lan743x_vector *vector = &adapter->intr.vector_list
381 vector->adapter = adapter;
382 vector->flags = flags;
383 vector->vector_index = vector_index;
384 vector->int_mask = int_mask;
385 vector->handler = handler;
386 vector->context = context;
388 ret = request_irq(vector->irq,
389 lan743x_intr_entry_isr,
390 (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ?
391 IRQF_SHARED : 0, DRIVER_NAME, vector);
393 vector->handler = NULL;
394 vector->context = NULL;
395 vector->int_mask = 0;
401 static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter,
404 struct lan743x_vector *vector = &adapter->intr.vector_list
407 free_irq(vector->irq, vector);
408 vector->handler = NULL;
409 vector->context = NULL;
410 vector->int_mask = 0;
414 static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter,
419 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) {
420 if (adapter->intr.vector_list[index].int_mask & int_mask)
421 return adapter->intr.vector_list[index].flags;
426 static void lan743x_intr_close(struct lan743x_adapter *adapter)
428 struct lan743x_intr *intr = &adapter->intr;
431 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
432 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF);
434 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) {
435 if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) {
436 lan743x_intr_unregister_isr(adapter, index);
437 intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index);
441 if (intr->flags & INTR_FLAG_MSI_ENABLED) {
442 pci_disable_msi(adapter->pdev);
443 intr->flags &= ~INTR_FLAG_MSI_ENABLED;
446 if (intr->flags & INTR_FLAG_MSIX_ENABLED) {
447 pci_disable_msix(adapter->pdev);
448 intr->flags &= ~INTR_FLAG_MSIX_ENABLED;
452 static int lan743x_intr_open(struct lan743x_adapter *adapter)
454 struct msix_entry msix_entries[LAN743X_MAX_VECTOR_COUNT];
455 struct lan743x_intr *intr = &adapter->intr;
456 u32 int_vec_en_auto_clr = 0;
457 u32 int_vec_map0 = 0;
458 u32 int_vec_map1 = 0;
463 intr->number_of_vectors = 0;
465 /* Try to set up MSIX interrupts */
466 memset(&msix_entries[0], 0,
467 sizeof(struct msix_entry) * LAN743X_MAX_VECTOR_COUNT);
468 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++)
469 msix_entries[index].entry = index;
470 ret = pci_enable_msix_range(adapter->pdev,
472 1 + LAN743X_USED_TX_CHANNELS +
473 LAN743X_USED_RX_CHANNELS);
476 intr->flags |= INTR_FLAG_MSIX_ENABLED;
477 intr->number_of_vectors = ret;
478 intr->using_vectors = true;
479 for (index = 0; index < intr->number_of_vectors; index++)
480 intr->vector_list[index].irq = msix_entries
482 netif_info(adapter, ifup, adapter->netdev,
483 "using MSIX interrupts, number of vectors = %d\n",
484 intr->number_of_vectors);
487 /* If MSIX failed try to setup using MSI interrupts */
488 if (!intr->number_of_vectors) {
489 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
490 if (!pci_enable_msi(adapter->pdev)) {
491 intr->flags |= INTR_FLAG_MSI_ENABLED;
492 intr->number_of_vectors = 1;
493 intr->using_vectors = true;
494 intr->vector_list[0].irq =
496 netif_info(adapter, ifup, adapter->netdev,
497 "using MSI interrupts, number of vectors = %d\n",
498 intr->number_of_vectors);
503 /* If MSIX, and MSI failed, setup using legacy interrupt */
504 if (!intr->number_of_vectors) {
505 intr->number_of_vectors = 1;
506 intr->using_vectors = false;
507 intr->vector_list[0].irq = intr->irq;
508 netif_info(adapter, ifup, adapter->netdev,
509 "using legacy interrupts\n");
512 /* At this point we must have at least one irq */
513 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF);
515 /* map all interrupts to vector 0 */
516 lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000);
517 lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000);
518 lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000);
519 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
520 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
521 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
522 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
524 if (intr->using_vectors) {
525 flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
526 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
528 flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR |
529 LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET |
530 LAN743X_VECTOR_FLAG_IRQ_SHARED;
533 if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
534 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ;
535 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C;
536 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
537 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK;
538 flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C;
539 flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C;
542 ret = lan743x_intr_register_isr(adapter, 0, flags,
543 INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ |
545 lan743x_intr_shared_isr, adapter);
548 intr->flags |= INTR_FLAG_IRQ_REQUESTED(0);
550 if (intr->using_vectors)
551 lan743x_csr_write(adapter, INT_VEC_EN_SET,
554 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
555 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD);
556 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD);
557 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD);
558 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD);
559 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD);
560 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD);
561 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD);
562 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD);
563 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432);
564 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001);
565 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF);
568 /* enable interrupts */
569 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
570 ret = lan743x_intr_test_isr(adapter);
574 if (intr->number_of_vectors > 1) {
575 int number_of_tx_vectors = intr->number_of_vectors - 1;
577 if (number_of_tx_vectors > LAN743X_USED_TX_CHANNELS)
578 number_of_tx_vectors = LAN743X_USED_TX_CHANNELS;
579 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
580 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
581 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
582 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
583 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
584 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
586 if (adapter->csr.flags &
587 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
588 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
589 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
590 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
591 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
592 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
595 for (index = 0; index < number_of_tx_vectors; index++) {
596 u32 int_bit = INT_BIT_DMA_TX_(index);
597 int vector = index + 1;
599 /* map TX interrupt to vector */
600 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector);
601 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1);
603 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
604 int_vec_en_auto_clr |= INT_VEC_EN_(vector);
605 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
606 int_vec_en_auto_clr);
609 /* Remove TX interrupt from shared mask */
610 intr->vector_list[0].int_mask &= ~int_bit;
611 ret = lan743x_intr_register_isr(adapter, vector, flags,
612 int_bit, lan743x_tx_isr,
613 &adapter->tx[index]);
616 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
618 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET))
619 lan743x_csr_write(adapter, INT_VEC_EN_SET,
620 INT_VEC_EN_(vector));
623 if ((intr->number_of_vectors - LAN743X_USED_TX_CHANNELS) > 1) {
624 int number_of_rx_vectors = intr->number_of_vectors -
625 LAN743X_USED_TX_CHANNELS - 1;
627 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS)
628 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS;
630 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
631 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
632 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
633 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
634 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
635 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
637 if (adapter->csr.flags &
638 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
639 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
640 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
641 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
642 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
643 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
645 for (index = 0; index < number_of_rx_vectors; index++) {
646 int vector = index + 1 + LAN743X_USED_TX_CHANNELS;
647 u32 int_bit = INT_BIT_DMA_RX_(index);
649 /* map RX interrupt to vector */
650 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector);
651 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0);
653 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
654 int_vec_en_auto_clr |= INT_VEC_EN_(vector);
655 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
656 int_vec_en_auto_clr);
659 /* Remove RX interrupt from shared mask */
660 intr->vector_list[0].int_mask &= ~int_bit;
661 ret = lan743x_intr_register_isr(adapter, vector, flags,
662 int_bit, lan743x_rx_isr,
663 &adapter->rx[index]);
666 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
668 lan743x_csr_write(adapter, INT_VEC_EN_SET,
669 INT_VEC_EN_(vector));
675 lan743x_intr_close(adapter);
679 static int lan743x_dp_write(struct lan743x_adapter *adapter,
680 u32 select, u32 addr, u32 length, u32 *buf)
686 mutex_lock(&adapter->dp_lock);
687 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
690 dp_sel = lan743x_csr_read(adapter, DP_SEL);
691 dp_sel &= ~DP_SEL_MASK_;
693 lan743x_csr_write(adapter, DP_SEL, dp_sel);
695 for (i = 0; i < length; i++) {
696 lan743x_csr_write(adapter, DP_ADDR, addr + i);
697 lan743x_csr_write(adapter, DP_DATA_0, buf[i]);
698 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_);
699 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
706 mutex_unlock(&adapter->dp_lock);
710 static u32 lan743x_mac_mii_access(u16 id, u16 index, int read)
714 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
715 MAC_MII_ACC_PHY_ADDR_MASK_;
716 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) &
717 MAC_MII_ACC_MIIRINDA_MASK_;
720 ret |= MAC_MII_ACC_MII_READ_;
722 ret |= MAC_MII_ACC_MII_WRITE_;
723 ret |= MAC_MII_ACC_MII_BUSY_;
728 static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter)
732 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data,
733 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000);
736 static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index)
738 struct lan743x_adapter *adapter = bus->priv;
742 /* comfirm MII not busy */
743 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
747 /* set the address, index & direction (read from PHY) */
748 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ);
749 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
750 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
754 val = lan743x_csr_read(adapter, MAC_MII_DATA);
755 return (int)(val & 0xFFFF);
758 static int lan743x_mdiobus_write(struct mii_bus *bus,
759 int phy_id, int index, u16 regval)
761 struct lan743x_adapter *adapter = bus->priv;
765 /* confirm MII not busy */
766 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
770 lan743x_csr_write(adapter, MAC_MII_DATA, val);
772 /* set the address, index & direction (write to PHY) */
773 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE);
774 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
775 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
779 static void lan743x_mac_set_address(struct lan743x_adapter *adapter,
782 u32 addr_lo, addr_hi;
790 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo);
791 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi);
793 ether_addr_copy(adapter->mac_address, addr);
794 netif_info(adapter, drv, adapter->netdev,
795 "MAC address set to %pM\n", addr);
798 static int lan743x_mac_init(struct lan743x_adapter *adapter)
800 bool mac_address_valid = true;
801 struct net_device *netdev;
806 netdev = adapter->netdev;
808 /* setup auto duplex, and speed detection */
809 data = lan743x_csr_read(adapter, MAC_CR);
810 data |= MAC_CR_ADD_ | MAC_CR_ASD_;
811 data |= MAC_CR_CNTR_RST_;
812 lan743x_csr_write(adapter, MAC_CR, data);
814 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH);
815 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL);
816 adapter->mac_address[0] = mac_addr_lo & 0xFF;
817 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF;
818 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF;
819 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF;
820 adapter->mac_address[4] = mac_addr_hi & 0xFF;
821 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF;
823 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) &&
824 mac_addr_lo == 0xFFFFFFFF) {
825 mac_address_valid = false;
826 } else if (!is_valid_ether_addr(adapter->mac_address)) {
827 mac_address_valid = false;
830 if (!mac_address_valid)
831 eth_random_addr(adapter->mac_address);
832 lan743x_mac_set_address(adapter, adapter->mac_address);
833 ether_addr_copy(netdev->dev_addr, adapter->mac_address);
837 static int lan743x_mac_open(struct lan743x_adapter *adapter)
842 temp = lan743x_csr_read(adapter, MAC_RX);
843 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_);
844 temp = lan743x_csr_read(adapter, MAC_TX);
845 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_);
849 static void lan743x_mac_close(struct lan743x_adapter *adapter)
853 temp = lan743x_csr_read(adapter, MAC_TX);
854 temp &= ~MAC_TX_TXEN_;
855 lan743x_csr_write(adapter, MAC_TX, temp);
856 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_,
857 1, 1000, 20000, 100);
859 temp = lan743x_csr_read(adapter, MAC_RX);
860 temp &= ~MAC_RX_RXEN_;
861 lan743x_csr_write(adapter, MAC_RX, temp);
862 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
863 1, 1000, 20000, 100);
866 static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter,
867 bool tx_enable, bool rx_enable)
869 u32 flow_setting = 0;
871 /* set maximum pause time because when fifo space frees
872 * up a zero value pause frame will be sent to release the pause
874 flow_setting = MAC_FLOW_CR_FCPT_MASK_;
876 flow_setting |= MAC_FLOW_CR_TX_FCEN_;
878 flow_setting |= MAC_FLOW_CR_RX_FCEN_;
879 lan743x_csr_write(adapter, MAC_FLOW, flow_setting);
882 static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu)
887 mac_rx = lan743x_csr_read(adapter, MAC_RX);
888 if (mac_rx & MAC_RX_RXEN_) {
890 if (mac_rx & MAC_RX_RXD_) {
891 lan743x_csr_write(adapter, MAC_RX, mac_rx);
892 mac_rx &= ~MAC_RX_RXD_;
894 mac_rx &= ~MAC_RX_RXEN_;
895 lan743x_csr_write(adapter, MAC_RX, mac_rx);
896 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
897 1, 1000, 20000, 100);
898 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_);
901 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_);
902 mac_rx |= (((new_mtu + ETH_HLEN + 4) << MAC_RX_MAX_SIZE_SHIFT_) &
903 MAC_RX_MAX_SIZE_MASK_);
904 lan743x_csr_write(adapter, MAC_RX, mac_rx);
907 mac_rx |= MAC_RX_RXEN_;
908 lan743x_csr_write(adapter, MAC_RX, mac_rx);
914 static int lan743x_phy_reset(struct lan743x_adapter *adapter)
918 /* Only called with in probe, and before mdiobus_register */
920 data = lan743x_csr_read(adapter, PMT_CTL);
921 data |= PMT_CTL_ETH_PHY_RST_;
922 lan743x_csr_write(adapter, PMT_CTL, data);
924 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data,
925 (!(data & PMT_CTL_ETH_PHY_RST_) &&
926 (data & PMT_CTL_READY_)),
930 static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter,
931 u8 duplex, u16 local_adv,
934 struct lan743x_phy *phy = &adapter->phy;
938 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv);
940 cap = phy->fc_request_control;
942 lan743x_mac_flow_ctrl_set_enables(adapter,
947 static int lan743x_phy_init(struct lan743x_adapter *adapter)
949 return lan743x_phy_reset(adapter);
952 static void lan743x_phy_link_status_change(struct net_device *netdev)
954 struct lan743x_adapter *adapter = netdev_priv(netdev);
955 struct phy_device *phydev = netdev->phydev;
957 phy_print_status(phydev);
958 if (phydev->state == PHY_RUNNING) {
959 struct ethtool_link_ksettings ksettings;
960 int remote_advertisement = 0;
961 int local_advertisement = 0;
963 memset(&ksettings, 0, sizeof(ksettings));
964 phy_ethtool_get_link_ksettings(netdev, &ksettings);
965 local_advertisement = phy_read(phydev, MII_ADVERTISE);
966 if (local_advertisement < 0)
969 remote_advertisement = phy_read(phydev, MII_LPA);
970 if (remote_advertisement < 0)
973 lan743x_phy_update_flowcontrol(adapter,
974 ksettings.base.duplex,
976 remote_advertisement);
977 lan743x_ptp_update_latency(adapter, ksettings.base.speed);
981 static void lan743x_phy_close(struct lan743x_adapter *adapter)
983 struct net_device *netdev = adapter->netdev;
985 phy_stop(netdev->phydev);
986 phy_disconnect(netdev->phydev);
987 netdev->phydev = NULL;
990 static int lan743x_phy_open(struct lan743x_adapter *adapter)
992 struct lan743x_phy *phy = &adapter->phy;
993 struct phy_device *phydev;
994 struct net_device *netdev;
997 netdev = adapter->netdev;
998 phydev = phy_find_first(adapter->mdiobus);
1002 ret = phy_connect_direct(netdev, phydev,
1003 lan743x_phy_link_status_change,
1004 PHY_INTERFACE_MODE_GMII);
1008 /* MAC doesn't support 1000T Half */
1009 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
1011 /* support both flow controls */
1012 phy_support_asym_pause(phydev);
1013 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
1014 phy->fc_autoneg = phydev->autoneg;
1017 phy_start_aneg(phydev);
1024 static void lan743x_rfe_open(struct lan743x_adapter *adapter)
1026 lan743x_csr_write(adapter, RFE_RSS_CFG,
1027 RFE_RSS_CFG_UDP_IPV6_EX_ |
1028 RFE_RSS_CFG_TCP_IPV6_EX_ |
1029 RFE_RSS_CFG_IPV6_EX_ |
1030 RFE_RSS_CFG_UDP_IPV6_ |
1031 RFE_RSS_CFG_TCP_IPV6_ |
1033 RFE_RSS_CFG_UDP_IPV4_ |
1034 RFE_RSS_CFG_TCP_IPV4_ |
1036 RFE_RSS_CFG_VALID_HASH_BITS_ |
1037 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ |
1038 RFE_RSS_CFG_RSS_HASH_STORE_ |
1039 RFE_RSS_CFG_RSS_ENABLE_);
1042 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter)
1045 u32 mac_addr_hi = 0;
1046 u32 mac_addr_lo = 0;
1048 /* Add mac address to perfect Filter */
1049 mac_addr = adapter->mac_address;
1050 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) |
1051 (((u32)(mac_addr[1])) << 8) |
1052 (((u32)(mac_addr[2])) << 16) |
1053 (((u32)(mac_addr[3])) << 24));
1054 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) |
1055 (((u32)(mac_addr[5])) << 8));
1057 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo);
1058 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0),
1059 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_);
1062 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter)
1064 struct net_device *netdev = adapter->netdev;
1065 u32 hash_table[DP_SEL_VHF_HASH_LEN];
1069 rfctl = lan743x_csr_read(adapter, RFE_CTL);
1070 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ |
1071 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
1072 rfctl |= RFE_CTL_AB_;
1073 if (netdev->flags & IFF_PROMISC) {
1074 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_;
1076 if (netdev->flags & IFF_ALLMULTI)
1077 rfctl |= RFE_CTL_AM_;
1080 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32));
1081 if (netdev_mc_count(netdev)) {
1082 struct netdev_hw_addr *ha;
1085 rfctl |= RFE_CTL_DA_PERFECT_;
1087 netdev_for_each_mc_addr(ha, netdev) {
1088 /* set first 32 into Perfect Filter */
1090 lan743x_csr_write(adapter,
1091 RFE_ADDR_FILT_HI(i), 0);
1093 data = ha->addr[2] | (data << 8);
1094 data = ha->addr[1] | (data << 8);
1095 data = ha->addr[0] | (data << 8);
1096 lan743x_csr_write(adapter,
1097 RFE_ADDR_FILT_LO(i), data);
1099 data = ha->addr[4] | (data << 8);
1100 data |= RFE_ADDR_FILT_HI_VALID_;
1101 lan743x_csr_write(adapter,
1102 RFE_ADDR_FILT_HI(i), data);
1104 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >>
1106 hash_table[bitnum / 32] |= (1 << (bitnum % 32));
1107 rfctl |= RFE_CTL_MCAST_HASH_;
1113 lan743x_dp_write(adapter, DP_SEL_RFE_RAM,
1114 DP_SEL_VHF_VLAN_LEN,
1115 DP_SEL_VHF_HASH_LEN, hash_table);
1116 lan743x_csr_write(adapter, RFE_CTL, rfctl);
1119 static int lan743x_dmac_init(struct lan743x_adapter *adapter)
1123 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_);
1124 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_,
1125 0, 1000, 20000, 100);
1126 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) {
1127 case DMA_DESCRIPTOR_SPACING_16:
1128 data = DMAC_CFG_MAX_DSPACE_16_;
1130 case DMA_DESCRIPTOR_SPACING_32:
1131 data = DMAC_CFG_MAX_DSPACE_32_;
1133 case DMA_DESCRIPTOR_SPACING_64:
1134 data = DMAC_CFG_MAX_DSPACE_64_;
1136 case DMA_DESCRIPTOR_SPACING_128:
1137 data = DMAC_CFG_MAX_DSPACE_128_;
1142 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1143 data |= DMAC_CFG_COAL_EN_;
1144 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_;
1145 data |= DMAC_CFG_MAX_READ_REQ_SET_(6);
1146 lan743x_csr_write(adapter, DMAC_CFG, data);
1147 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1);
1148 data |= DMAC_COAL_CFG_TIMER_TX_START_;
1149 data |= DMAC_COAL_CFG_FLUSH_INTS_;
1150 data |= DMAC_COAL_CFG_INT_EXIT_COAL_;
1151 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_;
1152 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A);
1153 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C);
1154 lan743x_csr_write(adapter, DMAC_COAL_CFG, data);
1155 data = DMAC_OBFF_TX_THRES_SET_(0x08);
1156 data |= DMAC_OBFF_RX_THRES_SET_(0x0A);
1157 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data);
1161 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter,
1166 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1167 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1168 DMAC_CMD_START_T_(tx_channel)),
1170 DMAC_CMD_STOP_T_(tx_channel)));
1173 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter,
1180 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) ==
1181 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1182 usleep_range(1000, 20000);
1185 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1190 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter,
1195 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1196 return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1197 DMAC_CMD_START_R_(rx_channel)),
1199 DMAC_CMD_STOP_R_(rx_channel)));
1202 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter,
1209 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) ==
1210 DMAC_CHANNEL_STATE_STOP_PENDING)) {
1211 usleep_range(1000, 20000);
1214 if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1219 static void lan743x_tx_release_desc(struct lan743x_tx *tx,
1220 int descriptor_index, bool cleanup)
1222 struct lan743x_tx_buffer_info *buffer_info = NULL;
1223 struct lan743x_tx_descriptor *descriptor = NULL;
1224 u32 descriptor_type = 0;
1227 descriptor = &tx->ring_cpu_ptr[descriptor_index];
1228 buffer_info = &tx->buffer_info[descriptor_index];
1229 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE))
1232 descriptor_type = (descriptor->data0) &
1233 TX_DESC_DATA0_DTYPE_MASK_;
1234 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_)
1235 goto clean_up_data_descriptor;
1239 clean_up_data_descriptor:
1240 if (buffer_info->dma_ptr) {
1241 if (buffer_info->flags &
1242 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) {
1243 dma_unmap_page(&tx->adapter->pdev->dev,
1244 buffer_info->dma_ptr,
1245 buffer_info->buffer_length,
1248 dma_unmap_single(&tx->adapter->pdev->dev,
1249 buffer_info->dma_ptr,
1250 buffer_info->buffer_length,
1253 buffer_info->dma_ptr = 0;
1254 buffer_info->buffer_length = 0;
1256 if (!buffer_info->skb)
1259 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) {
1260 dev_kfree_skb(buffer_info->skb);
1265 lan743x_ptp_unrequest_tx_timestamp(tx->adapter);
1266 dev_kfree_skb(buffer_info->skb);
1268 ignore_sync = (buffer_info->flags &
1269 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0;
1270 lan743x_ptp_tx_timestamp_skb(tx->adapter,
1271 buffer_info->skb, ignore_sync);
1275 buffer_info->skb = NULL;
1278 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE;
1281 memset(buffer_info, 0, sizeof(*buffer_info));
1282 memset(descriptor, 0, sizeof(*descriptor));
1285 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index)
1287 return ((++index) % tx->ring_size);
1290 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx)
1292 while ((*tx->head_cpu_ptr) != (tx->last_head)) {
1293 lan743x_tx_release_desc(tx, tx->last_head, false);
1294 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1298 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx)
1300 u32 original_head = 0;
1302 original_head = tx->last_head;
1304 lan743x_tx_release_desc(tx, tx->last_head, true);
1305 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1306 } while (tx->last_head != original_head);
1307 memset(tx->ring_cpu_ptr, 0,
1308 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size));
1309 memset(tx->buffer_info, 0,
1310 sizeof(*tx->buffer_info) * (tx->ring_size));
1313 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx,
1314 struct sk_buff *skb)
1316 int result = 1; /* 1 for the main skb buffer */
1319 if (skb_is_gso(skb))
1320 result++; /* requires an extension descriptor */
1321 nr_frags = skb_shinfo(skb)->nr_frags;
1322 result += nr_frags; /* 1 for each fragment buffer */
1326 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx)
1328 int last_head = tx->last_head;
1329 int last_tail = tx->last_tail;
1331 if (last_tail >= last_head)
1332 return tx->ring_size - last_tail + last_head - 1;
1334 return last_head - last_tail - 1;
1337 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
1338 bool enable_timestamping,
1339 bool enable_onestep_sync)
1341 if (enable_timestamping)
1342 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED;
1344 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED;
1345 if (enable_onestep_sync)
1346 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC;
1348 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC;
1351 static int lan743x_tx_frame_start(struct lan743x_tx *tx,
1352 unsigned char *first_buffer,
1353 unsigned int first_buffer_length,
1354 unsigned int frame_length,
1358 /* called only from within lan743x_tx_xmit_frame.
1359 * assuming tx->ring_lock has already been acquired.
1361 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1362 struct lan743x_tx_buffer_info *buffer_info = NULL;
1363 struct lan743x_adapter *adapter = tx->adapter;
1364 struct device *dev = &adapter->pdev->dev;
1367 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS;
1368 tx->frame_first = tx->last_tail;
1369 tx->frame_tail = tx->frame_first;
1371 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1372 buffer_info = &tx->buffer_info[tx->frame_tail];
1373 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length,
1375 if (dma_mapping_error(dev, dma_ptr))
1378 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr);
1379 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr);
1380 tx_descriptor->data3 = (frame_length << 16) &
1381 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_;
1383 buffer_info->skb = NULL;
1384 buffer_info->dma_ptr = dma_ptr;
1385 buffer_info->buffer_length = first_buffer_length;
1386 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1388 tx->frame_data0 = (first_buffer_length &
1389 TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1390 TX_DESC_DATA0_DTYPE_DATA_ |
1394 tx->frame_data0 |= TX_DESC_DATA0_TSE_;
1397 tx->frame_data0 |= TX_DESC_DATA0_ICE_ |
1398 TX_DESC_DATA0_IPE_ |
1401 /* data0 will be programmed in one of other frame assembler functions */
1405 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx,
1406 unsigned int frame_length)
1408 /* called only from within lan743x_tx_xmit_frame.
1409 * assuming tx->ring_lock has already been acquired.
1411 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1412 struct lan743x_tx_buffer_info *buffer_info = NULL;
1414 /* wrap up previous descriptor */
1415 tx->frame_data0 |= TX_DESC_DATA0_EXT_;
1416 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1417 tx_descriptor->data0 = tx->frame_data0;
1419 /* move to next descriptor */
1420 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1421 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1422 buffer_info = &tx->buffer_info[tx->frame_tail];
1424 /* add extension descriptor */
1425 tx_descriptor->data1 = 0;
1426 tx_descriptor->data2 = 0;
1427 tx_descriptor->data3 = 0;
1429 buffer_info->skb = NULL;
1430 buffer_info->dma_ptr = 0;
1431 buffer_info->buffer_length = 0;
1432 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1434 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) |
1435 TX_DESC_DATA0_DTYPE_EXT_ |
1436 TX_DESC_DATA0_EXT_LSO_;
1438 /* data0 will be programmed in one of other frame assembler functions */
1441 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx,
1442 const struct skb_frag_struct *fragment,
1443 unsigned int frame_length)
1445 /* called only from within lan743x_tx_xmit_frame
1446 * assuming tx->ring_lock has already been acquired
1448 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1449 struct lan743x_tx_buffer_info *buffer_info = NULL;
1450 struct lan743x_adapter *adapter = tx->adapter;
1451 struct device *dev = &adapter->pdev->dev;
1452 unsigned int fragment_length = 0;
1455 fragment_length = skb_frag_size(fragment);
1456 if (!fragment_length)
1459 /* wrap up previous descriptor */
1460 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1461 tx_descriptor->data0 = tx->frame_data0;
1463 /* move to next descriptor */
1464 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1465 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1466 buffer_info = &tx->buffer_info[tx->frame_tail];
1467 dma_ptr = skb_frag_dma_map(dev, fragment,
1470 if (dma_mapping_error(dev, dma_ptr)) {
1473 /* cleanup all previously setup descriptors */
1474 desc_index = tx->frame_first;
1475 while (desc_index != tx->frame_tail) {
1476 lan743x_tx_release_desc(tx, desc_index, true);
1477 desc_index = lan743x_tx_next_index(tx, desc_index);
1480 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1481 tx->frame_first = 0;
1482 tx->frame_data0 = 0;
1487 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr);
1488 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr);
1489 tx_descriptor->data3 = (frame_length << 16) &
1490 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_;
1492 buffer_info->skb = NULL;
1493 buffer_info->dma_ptr = dma_ptr;
1494 buffer_info->buffer_length = fragment_length;
1495 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1496 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT;
1498 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1499 TX_DESC_DATA0_DTYPE_DATA_ |
1502 /* data0 will be programmed in one of other frame assembler functions */
1506 static void lan743x_tx_frame_end(struct lan743x_tx *tx,
1507 struct sk_buff *skb,
1511 /* called only from within lan743x_tx_xmit_frame
1512 * assuming tx->ring_lock has already been acquired
1514 struct lan743x_tx_descriptor *tx_descriptor = NULL;
1515 struct lan743x_tx_buffer_info *buffer_info = NULL;
1516 struct lan743x_adapter *adapter = tx->adapter;
1517 u32 tx_tail_flags = 0;
1519 /* wrap up previous descriptor */
1520 tx->frame_data0 |= TX_DESC_DATA0_LS_;
1521 tx->frame_data0 |= TX_DESC_DATA0_IOC_;
1523 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1524 buffer_info = &tx->buffer_info[tx->frame_tail];
1525 buffer_info->skb = skb;
1527 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED;
1529 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC;
1531 tx_descriptor->data0 = tx->frame_data0;
1532 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1533 tx->last_tail = tx->frame_tail;
1537 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
1538 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_;
1539 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)
1540 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ |
1541 TX_TAIL_SET_TOP_INT_EN_;
1543 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
1544 tx_tail_flags | tx->frame_tail);
1545 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1548 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
1549 struct sk_buff *skb)
1551 int required_number_of_descriptors = 0;
1552 unsigned int start_frame_length = 0;
1553 unsigned int frame_length = 0;
1554 unsigned int head_length = 0;
1555 unsigned long irq_flags = 0;
1556 bool do_timestamp = false;
1557 bool ignore_sync = false;
1562 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb);
1564 spin_lock_irqsave(&tx->ring_lock, irq_flags);
1565 if (required_number_of_descriptors >
1566 lan743x_tx_get_avail_desc(tx)) {
1567 if (required_number_of_descriptors > (tx->ring_size - 1)) {
1570 /* save to overflow buffer */
1571 tx->overflow_skb = skb;
1572 netif_stop_queue(tx->adapter->netdev);
1577 /* space available, transmit skb */
1578 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
1579 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) &&
1580 (lan743x_ptp_request_tx_timestamp(tx->adapter))) {
1581 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1582 do_timestamp = true;
1583 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC)
1586 head_length = skb_headlen(skb);
1587 frame_length = skb_pagelen(skb);
1588 nr_frags = skb_shinfo(skb)->nr_frags;
1589 start_frame_length = frame_length;
1590 gso = skb_is_gso(skb);
1592 start_frame_length = max(skb_shinfo(skb)->gso_size,
1596 if (lan743x_tx_frame_start(tx,
1597 skb->data, head_length,
1600 skb->ip_summed == CHECKSUM_PARTIAL)) {
1606 lan743x_tx_frame_add_lso(tx, frame_length);
1611 for (j = 0; j < nr_frags; j++) {
1612 const struct skb_frag_struct *frag;
1614 frag = &(skb_shinfo(skb)->frags[j]);
1615 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) {
1616 /* upon error no need to call
1617 * lan743x_tx_frame_end
1618 * frame assembler clean up was performed inside
1619 * lan743x_tx_frame_add_fragment
1627 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync);
1630 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
1631 return NETDEV_TX_OK;
1634 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight)
1636 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi);
1637 struct lan743x_adapter *adapter = tx->adapter;
1638 bool start_transmitter = false;
1639 unsigned long irq_flags = 0;
1643 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
1644 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
1645 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C)
1646 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit);
1647 spin_lock_irqsave(&tx->ring_lock, irq_flags);
1649 /* clean up tx ring */
1650 lan743x_tx_release_completed_descriptors(tx);
1651 if (netif_queue_stopped(adapter->netdev)) {
1652 if (tx->overflow_skb) {
1653 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <=
1654 lan743x_tx_get_avail_desc(tx))
1655 start_transmitter = true;
1657 netif_wake_queue(adapter->netdev);
1660 spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
1662 if (start_transmitter) {
1663 /* space is now available, transmit overflow skb */
1664 lan743x_tx_xmit_frame(tx, tx->overflow_skb);
1665 tx->overflow_skb = NULL;
1666 netif_wake_queue(adapter->netdev);
1669 if (!napi_complete(napi))
1673 lan743x_csr_write(adapter, INT_EN_SET,
1674 INT_BIT_DMA_TX_(tx->channel_number));
1675 lan743x_csr_read(adapter, INT_STS);
1681 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx)
1683 if (tx->head_cpu_ptr) {
1684 pci_free_consistent(tx->adapter->pdev,
1685 sizeof(*tx->head_cpu_ptr),
1686 (void *)(tx->head_cpu_ptr),
1688 tx->head_cpu_ptr = NULL;
1689 tx->head_dma_ptr = 0;
1691 kfree(tx->buffer_info);
1692 tx->buffer_info = NULL;
1694 if (tx->ring_cpu_ptr) {
1695 pci_free_consistent(tx->adapter->pdev,
1696 tx->ring_allocation_size,
1699 tx->ring_allocation_size = 0;
1700 tx->ring_cpu_ptr = NULL;
1701 tx->ring_dma_ptr = 0;
1706 static int lan743x_tx_ring_init(struct lan743x_tx *tx)
1708 size_t ring_allocation_size = 0;
1709 void *cpu_ptr = NULL;
1713 tx->ring_size = LAN743X_TX_RING_SIZE;
1714 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) {
1718 ring_allocation_size = ALIGN(tx->ring_size *
1719 sizeof(struct lan743x_tx_descriptor),
1722 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev,
1723 ring_allocation_size, &dma_ptr);
1729 tx->ring_allocation_size = ring_allocation_size;
1730 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr;
1731 tx->ring_dma_ptr = dma_ptr;
1733 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL);
1738 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr;
1740 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev,
1741 sizeof(*tx->head_cpu_ptr), &dma_ptr);
1747 tx->head_cpu_ptr = cpu_ptr;
1748 tx->head_dma_ptr = dma_ptr;
1749 if (tx->head_dma_ptr & 0x3) {
1757 lan743x_tx_ring_cleanup(tx);
1761 static void lan743x_tx_close(struct lan743x_tx *tx)
1763 struct lan743x_adapter *adapter = tx->adapter;
1765 lan743x_csr_write(adapter,
1767 DMAC_CMD_STOP_T_(tx->channel_number));
1768 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number);
1770 lan743x_csr_write(adapter,
1772 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
1773 lan743x_csr_write(adapter, INT_EN_CLR,
1774 INT_BIT_DMA_TX_(tx->channel_number));
1775 napi_disable(&tx->napi);
1776 netif_napi_del(&tx->napi);
1778 lan743x_csr_write(adapter, FCT_TX_CTL,
1779 FCT_TX_CTL_DIS_(tx->channel_number));
1780 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
1781 FCT_TX_CTL_EN_(tx->channel_number),
1782 0, 1000, 20000, 100);
1784 lan743x_tx_release_all_descriptors(tx);
1786 if (tx->overflow_skb) {
1787 dev_kfree_skb(tx->overflow_skb);
1788 tx->overflow_skb = NULL;
1791 lan743x_tx_ring_cleanup(tx);
1794 static int lan743x_tx_open(struct lan743x_tx *tx)
1796 struct lan743x_adapter *adapter = NULL;
1800 adapter = tx->adapter;
1801 ret = lan743x_tx_ring_init(tx);
1805 /* initialize fifo */
1806 lan743x_csr_write(adapter, FCT_TX_CTL,
1807 FCT_TX_CTL_RESET_(tx->channel_number));
1808 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
1809 FCT_TX_CTL_RESET_(tx->channel_number),
1810 0, 1000, 20000, 100);
1813 lan743x_csr_write(adapter, FCT_TX_CTL,
1814 FCT_TX_CTL_EN_(tx->channel_number));
1816 /* reset tx channel */
1817 lan743x_csr_write(adapter, DMAC_CMD,
1818 DMAC_CMD_TX_SWR_(tx->channel_number));
1819 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
1820 DMAC_CMD_TX_SWR_(tx->channel_number),
1821 0, 1000, 20000, 100);
1823 /* Write TX_BASE_ADDR */
1824 lan743x_csr_write(adapter,
1825 TX_BASE_ADDRH(tx->channel_number),
1826 DMA_ADDR_HIGH32(tx->ring_dma_ptr));
1827 lan743x_csr_write(adapter,
1828 TX_BASE_ADDRL(tx->channel_number),
1829 DMA_ADDR_LOW32(tx->ring_dma_ptr));
1831 /* Write TX_CFG_B */
1832 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number));
1833 data &= ~TX_CFG_B_TX_RING_LEN_MASK_;
1834 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_);
1835 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1836 data |= TX_CFG_B_TDMABL_512_;
1837 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data);
1839 /* Write TX_CFG_A */
1840 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_;
1841 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
1842 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_;
1843 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10);
1844 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04);
1845 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07);
1847 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data);
1849 /* Write TX_HEAD_WRITEBACK_ADDR */
1850 lan743x_csr_write(adapter,
1851 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number),
1852 DMA_ADDR_HIGH32(tx->head_dma_ptr));
1853 lan743x_csr_write(adapter,
1854 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number),
1855 DMA_ADDR_LOW32(tx->head_dma_ptr));
1858 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number));
1862 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
1863 (u32)(tx->last_tail));
1864 tx->vector_flags = lan743x_intr_get_vector_flags(adapter,
1866 (tx->channel_number));
1867 netif_tx_napi_add(adapter->netdev,
1868 &tx->napi, lan743x_tx_napi_poll,
1870 napi_enable(&tx->napi);
1873 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
1874 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_;
1875 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
1876 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_;
1877 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
1878 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_;
1879 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
1880 data |= TX_CFG_C_TX_INT_EN_R2C_;
1881 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data);
1883 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET))
1884 lan743x_csr_write(adapter, INT_EN_SET,
1885 INT_BIT_DMA_TX_(tx->channel_number));
1886 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
1887 DMAC_INT_BIT_TX_IOC_(tx->channel_number));
1889 /* start dmac channel */
1890 lan743x_csr_write(adapter, DMAC_CMD,
1891 DMAC_CMD_START_T_(tx->channel_number));
1895 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index)
1897 return ((++index) % rx->ring_size);
1900 static int lan743x_rx_allocate_ring_element(struct lan743x_rx *rx, int index)
1902 struct lan743x_rx_buffer_info *buffer_info;
1903 struct lan743x_rx_descriptor *descriptor;
1906 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING);
1907 descriptor = &rx->ring_cpu_ptr[index];
1908 buffer_info = &rx->buffer_info[index];
1909 buffer_info->skb = __netdev_alloc_skb(rx->adapter->netdev,
1911 GFP_ATOMIC | GFP_DMA);
1912 if (!(buffer_info->skb))
1914 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev,
1915 buffer_info->skb->data,
1918 if (dma_mapping_error(&rx->adapter->pdev->dev,
1919 buffer_info->dma_ptr)) {
1920 buffer_info->dma_ptr = 0;
1924 buffer_info->buffer_length = length;
1925 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr);
1926 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr);
1927 descriptor->data3 = 0;
1928 descriptor->data0 = (RX_DESC_DATA0_OWN_ |
1929 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_));
1930 skb_reserve(buffer_info->skb, RX_HEAD_PADDING);
1935 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index)
1937 struct lan743x_rx_buffer_info *buffer_info;
1938 struct lan743x_rx_descriptor *descriptor;
1940 descriptor = &rx->ring_cpu_ptr[index];
1941 buffer_info = &rx->buffer_info[index];
1943 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr);
1944 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr);
1945 descriptor->data3 = 0;
1946 descriptor->data0 = (RX_DESC_DATA0_OWN_ |
1947 ((buffer_info->buffer_length) &
1948 RX_DESC_DATA0_BUF_LENGTH_MASK_));
1951 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index)
1953 struct lan743x_rx_buffer_info *buffer_info;
1954 struct lan743x_rx_descriptor *descriptor;
1956 descriptor = &rx->ring_cpu_ptr[index];
1957 buffer_info = &rx->buffer_info[index];
1959 memset(descriptor, 0, sizeof(*descriptor));
1961 if (buffer_info->dma_ptr) {
1962 dma_unmap_single(&rx->adapter->pdev->dev,
1963 buffer_info->dma_ptr,
1964 buffer_info->buffer_length,
1966 buffer_info->dma_ptr = 0;
1969 if (buffer_info->skb) {
1970 dev_kfree_skb(buffer_info->skb);
1971 buffer_info->skb = NULL;
1974 memset(buffer_info, 0, sizeof(*buffer_info));
1977 static int lan743x_rx_process_packet(struct lan743x_rx *rx)
1979 struct skb_shared_hwtstamps *hwtstamps = NULL;
1980 int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
1981 struct lan743x_rx_buffer_info *buffer_info;
1982 struct lan743x_rx_descriptor *descriptor;
1983 int current_head_index = -1;
1984 int extension_index = -1;
1985 int first_index = -1;
1986 int last_index = -1;
1988 current_head_index = *rx->head_cpu_ptr;
1989 if (current_head_index < 0 || current_head_index >= rx->ring_size)
1992 if (rx->last_head < 0 || rx->last_head >= rx->ring_size)
1995 if (rx->last_head != current_head_index) {
1996 descriptor = &rx->ring_cpu_ptr[rx->last_head];
1997 if (descriptor->data0 & RX_DESC_DATA0_OWN_)
2000 if (!(descriptor->data0 & RX_DESC_DATA0_FS_))
2003 first_index = rx->last_head;
2004 if (descriptor->data0 & RX_DESC_DATA0_LS_) {
2005 last_index = rx->last_head;
2009 index = lan743x_rx_next_index(rx, first_index);
2010 while (index != current_head_index) {
2011 descriptor = &rx->ring_cpu_ptr[index];
2012 if (descriptor->data0 & RX_DESC_DATA0_OWN_)
2015 if (descriptor->data0 & RX_DESC_DATA0_LS_) {
2019 index = lan743x_rx_next_index(rx, index);
2022 if (last_index >= 0) {
2023 descriptor = &rx->ring_cpu_ptr[last_index];
2024 if (descriptor->data0 & RX_DESC_DATA0_EXT_) {
2025 /* extension is expected to follow */
2026 int index = lan743x_rx_next_index(rx,
2028 if (index != current_head_index) {
2029 descriptor = &rx->ring_cpu_ptr[index];
2030 if (descriptor->data0 &
2031 RX_DESC_DATA0_OWN_) {
2034 if (descriptor->data0 &
2035 RX_DESC_DATA0_EXT_) {
2036 extension_index = index;
2041 /* extension is not yet available */
2042 /* prevent processing of this packet */
2049 if (first_index >= 0 && last_index >= 0) {
2050 int real_last_index = last_index;
2051 struct sk_buff *skb = NULL;
2055 /* packet is available */
2056 if (first_index == last_index) {
2057 /* single buffer packet */
2060 buffer_info = &rx->buffer_info[first_index];
2061 skb = buffer_info->skb;
2062 descriptor = &rx->ring_cpu_ptr[first_index];
2064 /* unmap from dma */
2065 if (buffer_info->dma_ptr) {
2066 dma_unmap_single(&rx->adapter->pdev->dev,
2067 buffer_info->dma_ptr,
2068 buffer_info->buffer_length,
2070 buffer_info->dma_ptr = 0;
2071 buffer_info->buffer_length = 0;
2073 buffer_info->skb = NULL;
2074 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_
2075 (descriptor->data0);
2076 skb_put(skb, packet_length - 4);
2077 skb->protocol = eth_type_trans(skb,
2078 rx->adapter->netdev);
2079 lan743x_rx_allocate_ring_element(rx, first_index);
2081 int index = first_index;
2083 /* multi buffer packet not supported */
2084 /* this should not happen since
2085 * buffers are allocated to be at least jumbo size
2088 /* clean up buffers */
2089 if (first_index <= last_index) {
2090 while ((index >= first_index) &&
2091 (index <= last_index)) {
2092 lan743x_rx_release_ring_element(rx,
2094 lan743x_rx_allocate_ring_element(rx,
2096 index = lan743x_rx_next_index(rx,
2100 while ((index >= first_index) ||
2101 (index <= last_index)) {
2102 lan743x_rx_release_ring_element(rx,
2104 lan743x_rx_allocate_ring_element(rx,
2106 index = lan743x_rx_next_index(rx,
2112 if (extension_index >= 0) {
2113 descriptor = &rx->ring_cpu_ptr[extension_index];
2114 buffer_info = &rx->buffer_info[extension_index];
2116 ts_sec = descriptor->data1;
2117 ts_nsec = (descriptor->data2 &
2118 RX_DESC_DATA2_TS_NS_MASK_);
2119 lan743x_rx_reuse_ring_element(rx, extension_index);
2120 real_last_index = extension_index;
2124 result = RX_PROCESS_RESULT_PACKET_DROPPED;
2128 if (extension_index < 0)
2129 goto pass_packet_to_os;
2130 hwtstamps = skb_hwtstamps(skb);
2132 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec);
2135 /* pass packet to OS */
2136 napi_gro_receive(&rx->napi, skb);
2137 result = RX_PROCESS_RESULT_PACKET_RECEIVED;
2140 /* push tail and head forward */
2141 rx->last_tail = real_last_index;
2142 rx->last_head = lan743x_rx_next_index(rx, real_last_index);
2148 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight)
2150 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi);
2151 struct lan743x_adapter *adapter = rx->adapter;
2152 u32 rx_tail_flags = 0;
2155 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) {
2156 /* clear int status bit before reading packet */
2157 lan743x_csr_write(adapter, DMAC_INT_STS,
2158 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2161 while (count < weight) {
2162 int rx_process_result = -1;
2164 rx_process_result = lan743x_rx_process_packet(rx);
2165 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) {
2167 } else if (rx_process_result ==
2168 RX_PROCESS_RESULT_NOTHING_TO_DO) {
2170 } else if (rx_process_result ==
2171 RX_PROCESS_RESULT_PACKET_DROPPED) {
2175 rx->frame_count += count;
2176 if (count == weight)
2179 if (!napi_complete_done(napi, count))
2182 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
2183 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_;
2184 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) {
2185 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_;
2187 lan743x_csr_write(adapter, INT_EN_SET,
2188 INT_BIT_DMA_RX_(rx->channel_number));
2191 /* update RX_TAIL */
2192 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2193 rx_tail_flags | rx->last_tail);
2198 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx)
2200 if (rx->buffer_info && rx->ring_cpu_ptr) {
2203 for (index = 0; index < rx->ring_size; index++)
2204 lan743x_rx_release_ring_element(rx, index);
2207 if (rx->head_cpu_ptr) {
2208 pci_free_consistent(rx->adapter->pdev,
2209 sizeof(*rx->head_cpu_ptr),
2212 rx->head_cpu_ptr = NULL;
2213 rx->head_dma_ptr = 0;
2216 kfree(rx->buffer_info);
2217 rx->buffer_info = NULL;
2219 if (rx->ring_cpu_ptr) {
2220 pci_free_consistent(rx->adapter->pdev,
2221 rx->ring_allocation_size,
2224 rx->ring_allocation_size = 0;
2225 rx->ring_cpu_ptr = NULL;
2226 rx->ring_dma_ptr = 0;
2233 static int lan743x_rx_ring_init(struct lan743x_rx *rx)
2235 size_t ring_allocation_size = 0;
2236 dma_addr_t dma_ptr = 0;
2237 void *cpu_ptr = NULL;
2241 rx->ring_size = LAN743X_RX_RING_SIZE;
2242 if (rx->ring_size <= 1) {
2246 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) {
2250 ring_allocation_size = ALIGN(rx->ring_size *
2251 sizeof(struct lan743x_rx_descriptor),
2254 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev,
2255 ring_allocation_size, &dma_ptr);
2260 rx->ring_allocation_size = ring_allocation_size;
2261 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr;
2262 rx->ring_dma_ptr = dma_ptr;
2264 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info),
2270 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr;
2272 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev,
2273 sizeof(*rx->head_cpu_ptr), &dma_ptr);
2279 rx->head_cpu_ptr = cpu_ptr;
2280 rx->head_dma_ptr = dma_ptr;
2281 if (rx->head_dma_ptr & 0x3) {
2287 for (index = 0; index < rx->ring_size; index++) {
2288 ret = lan743x_rx_allocate_ring_element(rx, index);
2295 lan743x_rx_ring_cleanup(rx);
2299 static void lan743x_rx_close(struct lan743x_rx *rx)
2301 struct lan743x_adapter *adapter = rx->adapter;
2303 lan743x_csr_write(adapter, FCT_RX_CTL,
2304 FCT_RX_CTL_DIS_(rx->channel_number));
2305 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2306 FCT_RX_CTL_EN_(rx->channel_number),
2307 0, 1000, 20000, 100);
2309 lan743x_csr_write(adapter, DMAC_CMD,
2310 DMAC_CMD_STOP_R_(rx->channel_number));
2311 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number);
2313 lan743x_csr_write(adapter, DMAC_INT_EN_CLR,
2314 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2315 lan743x_csr_write(adapter, INT_EN_CLR,
2316 INT_BIT_DMA_RX_(rx->channel_number));
2317 napi_disable(&rx->napi);
2319 netif_napi_del(&rx->napi);
2321 lan743x_rx_ring_cleanup(rx);
2324 static int lan743x_rx_open(struct lan743x_rx *rx)
2326 struct lan743x_adapter *adapter = rx->adapter;
2330 rx->frame_count = 0;
2331 ret = lan743x_rx_ring_init(rx);
2335 netif_napi_add(adapter->netdev,
2336 &rx->napi, lan743x_rx_napi_poll,
2339 lan743x_csr_write(adapter, DMAC_CMD,
2340 DMAC_CMD_RX_SWR_(rx->channel_number));
2341 lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
2342 DMAC_CMD_RX_SWR_(rx->channel_number),
2343 0, 1000, 20000, 100);
2345 /* set ring base address */
2346 lan743x_csr_write(adapter,
2347 RX_BASE_ADDRH(rx->channel_number),
2348 DMA_ADDR_HIGH32(rx->ring_dma_ptr));
2349 lan743x_csr_write(adapter,
2350 RX_BASE_ADDRL(rx->channel_number),
2351 DMA_ADDR_LOW32(rx->ring_dma_ptr));
2353 /* set rx write back address */
2354 lan743x_csr_write(adapter,
2355 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number),
2356 DMA_ADDR_HIGH32(rx->head_dma_ptr));
2357 lan743x_csr_write(adapter,
2358 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number),
2359 DMA_ADDR_LOW32(rx->head_dma_ptr));
2360 data = RX_CFG_A_RX_HP_WB_EN_;
2361 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
2362 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ |
2363 RX_CFG_A_RX_WB_THRES_SET_(0x7) |
2364 RX_CFG_A_RX_PF_THRES_SET_(16) |
2365 RX_CFG_A_RX_PF_PRI_THRES_SET_(4));
2369 lan743x_csr_write(adapter,
2370 RX_CFG_A(rx->channel_number), data);
2373 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number));
2374 data &= ~RX_CFG_B_RX_PAD_MASK_;
2375 if (!RX_HEAD_PADDING)
2376 data |= RX_CFG_B_RX_PAD_0_;
2378 data |= RX_CFG_B_RX_PAD_2_;
2379 data &= ~RX_CFG_B_RX_RING_LEN_MASK_;
2380 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_);
2381 data |= RX_CFG_B_TS_ALL_RX_;
2382 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
2383 data |= RX_CFG_B_RDMABL_512_;
2385 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data);
2386 rx->vector_flags = lan743x_intr_get_vector_flags(adapter,
2388 (rx->channel_number));
2392 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
2393 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_;
2394 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
2395 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_;
2396 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
2397 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_;
2398 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
2399 data |= RX_CFG_C_RX_INT_EN_R2C_;
2400 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data);
2402 rx->last_tail = ((u32)(rx->ring_size - 1));
2403 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2405 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number));
2406 if (rx->last_head) {
2411 napi_enable(&rx->napi);
2413 lan743x_csr_write(adapter, INT_EN_SET,
2414 INT_BIT_DMA_RX_(rx->channel_number));
2415 lan743x_csr_write(adapter, DMAC_INT_STS,
2416 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2417 lan743x_csr_write(adapter, DMAC_INT_EN_SET,
2418 DMAC_INT_BIT_RXFRM_(rx->channel_number));
2419 lan743x_csr_write(adapter, DMAC_CMD,
2420 DMAC_CMD_START_R_(rx->channel_number));
2422 /* initialize fifo */
2423 lan743x_csr_write(adapter, FCT_RX_CTL,
2424 FCT_RX_CTL_RESET_(rx->channel_number));
2425 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2426 FCT_RX_CTL_RESET_(rx->channel_number),
2427 0, 1000, 20000, 100);
2428 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number),
2429 FCT_FLOW_CTL_REQ_EN_ |
2430 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) |
2431 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA));
2434 lan743x_csr_write(adapter, FCT_RX_CTL,
2435 FCT_RX_CTL_EN_(rx->channel_number));
2439 netif_napi_del(&rx->napi);
2440 lan743x_rx_ring_cleanup(rx);
2446 static int lan743x_netdev_close(struct net_device *netdev)
2448 struct lan743x_adapter *adapter = netdev_priv(netdev);
2451 lan743x_tx_close(&adapter->tx[0]);
2453 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++)
2454 lan743x_rx_close(&adapter->rx[index]);
2456 lan743x_ptp_close(adapter);
2458 lan743x_phy_close(adapter);
2460 lan743x_mac_close(adapter);
2462 lan743x_intr_close(adapter);
2467 static int lan743x_netdev_open(struct net_device *netdev)
2469 struct lan743x_adapter *adapter = netdev_priv(netdev);
2473 ret = lan743x_intr_open(adapter);
2477 ret = lan743x_mac_open(adapter);
2481 ret = lan743x_phy_open(adapter);
2485 ret = lan743x_ptp_open(adapter);
2489 lan743x_rfe_open(adapter);
2491 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2492 ret = lan743x_rx_open(&adapter->rx[index]);
2497 ret = lan743x_tx_open(&adapter->tx[0]);
2504 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2505 if (adapter->rx[index].ring_cpu_ptr)
2506 lan743x_rx_close(&adapter->rx[index]);
2508 lan743x_ptp_close(adapter);
2511 lan743x_phy_close(adapter);
2514 lan743x_mac_close(adapter);
2517 lan743x_intr_close(adapter);
2520 netif_warn(adapter, ifup, adapter->netdev,
2521 "Error opening LAN743x\n");
2525 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb,
2526 struct net_device *netdev)
2528 struct lan743x_adapter *adapter = netdev_priv(netdev);
2530 return lan743x_tx_xmit_frame(&adapter->tx[0], skb);
2533 static int lan743x_netdev_ioctl(struct net_device *netdev,
2534 struct ifreq *ifr, int cmd)
2536 if (!netif_running(netdev))
2538 if (cmd == SIOCSHWTSTAMP)
2539 return lan743x_ptp_ioctl(netdev, ifr, cmd);
2540 return phy_mii_ioctl(netdev->phydev, ifr, cmd);
2543 static void lan743x_netdev_set_multicast(struct net_device *netdev)
2545 struct lan743x_adapter *adapter = netdev_priv(netdev);
2547 lan743x_rfe_set_multicast(adapter);
2550 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu)
2552 struct lan743x_adapter *adapter = netdev_priv(netdev);
2555 ret = lan743x_mac_set_mtu(adapter, new_mtu);
2557 netdev->mtu = new_mtu;
2561 static void lan743x_netdev_get_stats64(struct net_device *netdev,
2562 struct rtnl_link_stats64 *stats)
2564 struct lan743x_adapter *adapter = netdev_priv(netdev);
2566 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES);
2567 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES);
2568 stats->rx_bytes = lan743x_csr_read(adapter,
2569 STAT_RX_UNICAST_BYTE_COUNT) +
2570 lan743x_csr_read(adapter,
2571 STAT_RX_BROADCAST_BYTE_COUNT) +
2572 lan743x_csr_read(adapter,
2573 STAT_RX_MULTICAST_BYTE_COUNT);
2574 stats->tx_bytes = lan743x_csr_read(adapter,
2575 STAT_TX_UNICAST_BYTE_COUNT) +
2576 lan743x_csr_read(adapter,
2577 STAT_TX_BROADCAST_BYTE_COUNT) +
2578 lan743x_csr_read(adapter,
2579 STAT_TX_MULTICAST_BYTE_COUNT);
2580 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) +
2581 lan743x_csr_read(adapter,
2582 STAT_RX_ALIGNMENT_ERRORS) +
2583 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) +
2584 lan743x_csr_read(adapter,
2585 STAT_RX_UNDERSIZE_FRAME_ERRORS) +
2586 lan743x_csr_read(adapter,
2587 STAT_RX_OVERSIZE_FRAME_ERRORS);
2588 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) +
2589 lan743x_csr_read(adapter,
2590 STAT_TX_EXCESS_DEFERRAL_ERRORS) +
2591 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS);
2592 stats->rx_dropped = lan743x_csr_read(adapter,
2593 STAT_RX_DROPPED_FRAMES);
2594 stats->tx_dropped = lan743x_csr_read(adapter,
2595 STAT_TX_EXCESSIVE_COLLISION);
2596 stats->multicast = lan743x_csr_read(adapter,
2597 STAT_RX_MULTICAST_FRAMES) +
2598 lan743x_csr_read(adapter,
2599 STAT_TX_MULTICAST_FRAMES);
2600 stats->collisions = lan743x_csr_read(adapter,
2601 STAT_TX_SINGLE_COLLISIONS) +
2602 lan743x_csr_read(adapter,
2603 STAT_TX_MULTIPLE_COLLISIONS) +
2604 lan743x_csr_read(adapter,
2605 STAT_TX_LATE_COLLISIONS);
2608 static int lan743x_netdev_set_mac_address(struct net_device *netdev,
2611 struct lan743x_adapter *adapter = netdev_priv(netdev);
2612 struct sockaddr *sock_addr = addr;
2615 ret = eth_prepare_mac_addr_change(netdev, sock_addr);
2618 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data);
2619 lan743x_mac_set_address(adapter, sock_addr->sa_data);
2620 lan743x_rfe_update_mac_address(adapter);
2624 static const struct net_device_ops lan743x_netdev_ops = {
2625 .ndo_open = lan743x_netdev_open,
2626 .ndo_stop = lan743x_netdev_close,
2627 .ndo_start_xmit = lan743x_netdev_xmit_frame,
2628 .ndo_do_ioctl = lan743x_netdev_ioctl,
2629 .ndo_set_rx_mode = lan743x_netdev_set_multicast,
2630 .ndo_change_mtu = lan743x_netdev_change_mtu,
2631 .ndo_get_stats64 = lan743x_netdev_get_stats64,
2632 .ndo_set_mac_address = lan743x_netdev_set_mac_address,
2635 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter)
2637 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
2640 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter)
2642 mdiobus_unregister(adapter->mdiobus);
2645 static void lan743x_full_cleanup(struct lan743x_adapter *adapter)
2647 unregister_netdev(adapter->netdev);
2649 lan743x_mdiobus_cleanup(adapter);
2650 lan743x_hardware_cleanup(adapter);
2651 lan743x_pci_cleanup(adapter);
2654 static int lan743x_hardware_init(struct lan743x_adapter *adapter,
2655 struct pci_dev *pdev)
2657 struct lan743x_tx *tx;
2661 adapter->intr.irq = adapter->pdev->irq;
2662 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
2663 mutex_init(&adapter->dp_lock);
2665 ret = lan743x_gpio_init(adapter);
2669 ret = lan743x_mac_init(adapter);
2673 ret = lan743x_phy_init(adapter);
2677 ret = lan743x_ptp_init(adapter);
2681 lan743x_rfe_update_mac_address(adapter);
2683 ret = lan743x_dmac_init(adapter);
2687 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
2688 adapter->rx[index].adapter = adapter;
2689 adapter->rx[index].channel_number = index;
2692 tx = &adapter->tx[0];
2693 tx->adapter = adapter;
2694 tx->channel_number = 0;
2695 spin_lock_init(&tx->ring_lock);
2699 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
2703 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev);
2704 if (!(adapter->mdiobus)) {
2709 adapter->mdiobus->priv = (void *)adapter;
2710 adapter->mdiobus->read = lan743x_mdiobus_read;
2711 adapter->mdiobus->write = lan743x_mdiobus_write;
2712 adapter->mdiobus->name = "lan743x-mdiobus";
2713 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE,
2714 "pci-%s", pci_name(adapter->pdev));
2716 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_)
2717 /* LAN7430 uses internal phy at address 1 */
2718 adapter->mdiobus->phy_mask = ~(u32)BIT(1);
2720 /* register mdiobus */
2721 ret = mdiobus_register(adapter->mdiobus);
2730 /* lan743x_pcidev_probe - Device Initialization Routine
2731 * @pdev: PCI device information struct
2732 * @id: entry in lan743x_pci_tbl
2734 * Returns 0 on success, negative on failure
2736 * initializes an adapter identified by a pci_dev structure.
2737 * The OS initialization, configuring of the adapter private structure,
2738 * and a hardware reset occur.
2740 static int lan743x_pcidev_probe(struct pci_dev *pdev,
2741 const struct pci_device_id *id)
2743 struct lan743x_adapter *adapter = NULL;
2744 struct net_device *netdev = NULL;
2747 netdev = devm_alloc_etherdev(&pdev->dev,
2748 sizeof(struct lan743x_adapter));
2752 SET_NETDEV_DEV(netdev, &pdev->dev);
2753 pci_set_drvdata(pdev, netdev);
2754 adapter = netdev_priv(netdev);
2755 adapter->netdev = netdev;
2756 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE |
2757 NETIF_MSG_LINK | NETIF_MSG_IFUP |
2758 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED;
2759 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
2761 ret = lan743x_pci_init(adapter, pdev);
2765 ret = lan743x_csr_init(adapter);
2769 ret = lan743x_hardware_init(adapter, pdev);
2773 ret = lan743x_mdiobus_init(adapter);
2775 goto cleanup_hardware;
2777 adapter->netdev->netdev_ops = &lan743x_netdev_ops;
2778 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops;
2779 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2780 adapter->netdev->hw_features = adapter->netdev->features;
2782 /* carrier off reporting is important to ethtool even BEFORE open */
2783 netif_carrier_off(netdev);
2785 ret = register_netdev(adapter->netdev);
2787 goto cleanup_mdiobus;
2791 lan743x_mdiobus_cleanup(adapter);
2794 lan743x_hardware_cleanup(adapter);
2797 lan743x_pci_cleanup(adapter);
2800 pr_warn("Initialization failed\n");
2805 * lan743x_pcidev_remove - Device Removal Routine
2806 * @pdev: PCI device information struct
2808 * this is called by the PCI subsystem to alert the driver
2809 * that it should release a PCI device. This could be caused by a
2810 * Hot-Plug event, or because the driver is going to be removed from
2813 static void lan743x_pcidev_remove(struct pci_dev *pdev)
2815 struct net_device *netdev = pci_get_drvdata(pdev);
2816 struct lan743x_adapter *adapter = netdev_priv(netdev);
2818 lan743x_full_cleanup(adapter);
2821 static void lan743x_pcidev_shutdown(struct pci_dev *pdev)
2823 struct net_device *netdev = pci_get_drvdata(pdev);
2824 struct lan743x_adapter *adapter = netdev_priv(netdev);
2827 netif_device_detach(netdev);
2829 /* close netdev when netdev is at running state.
2830 * For instance, it is true when system goes to sleep by pm-suspend
2831 * However, it is false when system goes to sleep by suspend GUI menu
2833 if (netif_running(netdev))
2834 lan743x_netdev_close(netdev);
2838 pci_save_state(pdev);
2841 /* clean up lan743x portion */
2842 lan743x_hardware_cleanup(adapter);
2845 #ifdef CONFIG_PM_SLEEP
2846 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len)
2848 return bitrev16(crc16(0xFFFF, buf, len));
2851 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter)
2853 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
2854 const u8 ipv6_multicast[3] = { 0x33, 0x33 };
2855 const u8 arp_type[2] = { 0x08, 0x06 };
2862 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++)
2863 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0);
2865 /* clear wake settings */
2866 pmtctl = lan743x_csr_read(adapter, PMT_CTL);
2867 pmtctl |= PMT_CTL_WUPS_MASK_;
2868 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ |
2869 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ |
2870 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_);
2872 macrx = lan743x_csr_read(adapter, MAC_RX);
2877 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_;
2879 if (adapter->wolopts & WAKE_PHY) {
2880 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_;
2881 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_;
2883 if (adapter->wolopts & WAKE_MAGIC) {
2884 wucsr |= MAC_WUCSR_MPEN_;
2885 macrx |= MAC_RX_RXEN_;
2886 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2888 if (adapter->wolopts & WAKE_UCAST) {
2889 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_;
2890 macrx |= MAC_RX_RXEN_;
2891 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2892 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2894 if (adapter->wolopts & WAKE_BCAST) {
2895 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_;
2896 macrx |= MAC_RX_RXEN_;
2897 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2898 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2900 if (adapter->wolopts & WAKE_MCAST) {
2901 /* IPv4 multicast */
2902 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3);
2903 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
2904 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
2905 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
2906 (crc & MAC_WUF_CFG_CRC16_MASK_));
2907 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7);
2908 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
2909 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
2910 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
2913 /* IPv6 multicast */
2914 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2);
2915 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
2916 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
2917 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
2918 (crc & MAC_WUF_CFG_CRC16_MASK_));
2919 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3);
2920 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
2921 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
2922 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
2925 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
2926 macrx |= MAC_RX_RXEN_;
2927 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2928 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2930 if (adapter->wolopts & WAKE_ARP) {
2931 /* set MAC_WUF_CFG & WUF_MASK
2932 * for packettype (offset 12,13) = ARP (0x0806)
2934 crc = lan743x_pm_wakeframe_crc16(arp_type, 2);
2935 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
2936 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ |
2937 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
2938 (crc & MAC_WUF_CFG_CRC16_MASK_));
2939 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000);
2940 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
2941 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
2942 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
2945 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
2946 macrx |= MAC_RX_RXEN_;
2947 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
2948 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
2951 lan743x_csr_write(adapter, MAC_WUCSR, wucsr);
2952 lan743x_csr_write(adapter, PMT_CTL, pmtctl);
2953 lan743x_csr_write(adapter, MAC_RX, macrx);
2956 static int lan743x_pm_suspend(struct device *dev)
2958 struct pci_dev *pdev = to_pci_dev(dev);
2959 struct net_device *netdev = pci_get_drvdata(pdev);
2960 struct lan743x_adapter *adapter = netdev_priv(netdev);
2963 lan743x_pcidev_shutdown(pdev);
2965 /* clear all wakes */
2966 lan743x_csr_write(adapter, MAC_WUCSR, 0);
2967 lan743x_csr_write(adapter, MAC_WUCSR2, 0);
2968 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF);
2970 if (adapter->wolopts)
2971 lan743x_pm_set_wol(adapter);
2973 /* Host sets PME_En, put D3hot */
2974 ret = pci_prepare_to_sleep(pdev);
2979 static int lan743x_pm_resume(struct device *dev)
2981 struct pci_dev *pdev = to_pci_dev(dev);
2982 struct net_device *netdev = pci_get_drvdata(pdev);
2983 struct lan743x_adapter *adapter = netdev_priv(netdev);
2986 pci_set_power_state(pdev, PCI_D0);
2987 pci_restore_state(pdev);
2988 pci_save_state(pdev);
2990 ret = lan743x_hardware_init(adapter, pdev);
2992 netif_err(adapter, probe, adapter->netdev,
2993 "lan743x_hardware_init returned %d\n", ret);
2996 /* open netdev when netdev is at running state while resume.
2997 * For instance, it is true when system wakesup after pm-suspend
2998 * However, it is false when system wakes up after suspend GUI menu
3000 if (netif_running(netdev))
3001 lan743x_netdev_open(netdev);
3003 netif_device_attach(netdev);
3008 static const struct dev_pm_ops lan743x_pm_ops = {
3009 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume)
3011 #endif /* CONFIG_PM_SLEEP */
3013 static const struct pci_device_id lan743x_pcidev_tbl[] = {
3014 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) },
3015 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) },
3019 static struct pci_driver lan743x_pcidev_driver = {
3020 .name = DRIVER_NAME,
3021 .id_table = lan743x_pcidev_tbl,
3022 .probe = lan743x_pcidev_probe,
3023 .remove = lan743x_pcidev_remove,
3024 #ifdef CONFIG_PM_SLEEP
3025 .driver.pm = &lan743x_pm_ops,
3027 .shutdown = lan743x_pcidev_shutdown,
3030 module_pci_driver(lan743x_pcidev_driver);
3032 MODULE_AUTHOR(DRIVER_AUTHOR);
3033 MODULE_DESCRIPTION(DRIVER_DESC);
3034 MODULE_LICENSE("GPL");