2 * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
3 * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com>
4 * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/pci.h>
15 #include <linux/interrupt.h>
16 #include <linux/sched.h>
17 #include <linux/wait.h>
18 #include <linux/spinlock.h>
19 #include <linux/sort.h>
20 #include <linux/random.h>
21 #include <linux/netdevice.h>
22 #include <linux/skbuff.h>
23 #include <linux/socket.h>
24 #include <linux/etherdevice.h>
25 #include <linux/ethtool.h>
26 #include <linux/if_ether.h>
27 #include <linux/if_vlan.h>
28 #include <linux/if_bridge.h>
29 #include <linux/bitops.h>
30 #include <linux/ctype.h>
31 #include <net/switchdev.h>
32 #include <net/rtnetlink.h>
33 #include <net/netevent.h>
35 #include <linux/io-64-nonatomic-lo-hi.h>
36 #include <generated/utsrelease.h>
38 #include "rocker_hw.h"
40 #include "rocker_tlv.h"
42 static const char rocker_driver_name[] = "rocker";
44 static const struct pci_device_id rocker_pci_id_table[] = {
45 {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
50 wait_queue_head_t wait;
55 static void rocker_wait_reset(struct rocker_wait *wait)
61 static void rocker_wait_init(struct rocker_wait *wait)
63 init_waitqueue_head(&wait->wait);
64 rocker_wait_reset(wait);
67 static struct rocker_wait *rocker_wait_create(void)
69 struct rocker_wait *wait;
71 wait = kzalloc(sizeof(*wait), GFP_KERNEL);
77 static void rocker_wait_destroy(struct rocker_wait *wait)
82 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
83 unsigned long timeout)
85 wait_event_timeout(wait->wait, wait->done, HZ / 10);
91 static void rocker_wait_wake_up(struct rocker_wait *wait)
97 static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
99 return rocker->msix_entries[vector].vector;
102 static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
104 return rocker_msix_vector(rocker_port->rocker,
105 ROCKER_MSIX_VEC_TX(rocker_port->port_number));
108 static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
110 return rocker_msix_vector(rocker_port->rocker,
111 ROCKER_MSIX_VEC_RX(rocker_port->port_number));
114 #define rocker_write32(rocker, reg, val) \
115 writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
116 #define rocker_read32(rocker, reg) \
117 readl((rocker)->hw_addr + (ROCKER_ ## reg))
118 #define rocker_write64(rocker, reg, val) \
119 writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
120 #define rocker_read64(rocker, reg) \
121 readq((rocker)->hw_addr + (ROCKER_ ## reg))
123 /*****************************
124 * HW basic testing functions
125 *****************************/
127 static int rocker_reg_test(const struct rocker *rocker)
129 const struct pci_dev *pdev = rocker->pdev;
135 rocker_write32(rocker, TEST_REG, rnd);
136 test_reg = rocker_read32(rocker, TEST_REG);
137 if (test_reg != rnd * 2) {
138 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
145 rnd |= prandom_u32();
146 rocker_write64(rocker, TEST_REG64, rnd);
147 test_reg = rocker_read64(rocker, TEST_REG64);
148 if (test_reg != rnd * 2) {
149 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
157 static int rocker_dma_test_one(const struct rocker *rocker,
158 struct rocker_wait *wait, u32 test_type,
159 dma_addr_t dma_handle, const unsigned char *buf,
160 const unsigned char *expect, size_t size)
162 const struct pci_dev *pdev = rocker->pdev;
165 rocker_wait_reset(wait);
166 rocker_write32(rocker, TEST_DMA_CTRL, test_type);
168 if (!rocker_wait_event_timeout(wait, HZ / 10)) {
169 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
173 for (i = 0; i < size; i++) {
174 if (buf[i] != expect[i]) {
175 dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
176 buf[i], i, expect[i]);
183 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
184 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
186 static int rocker_dma_test_offset(const struct rocker *rocker,
187 struct rocker_wait *wait, int offset)
189 struct pci_dev *pdev = rocker->pdev;
190 unsigned char *alloc;
192 unsigned char *expect;
193 dma_addr_t dma_handle;
197 alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
198 GFP_KERNEL | GFP_DMA);
201 buf = alloc + offset;
202 expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
204 dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
205 PCI_DMA_BIDIRECTIONAL);
206 if (pci_dma_mapping_error(pdev, dma_handle)) {
211 rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
212 rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
214 memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
215 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
216 dma_handle, buf, expect,
217 ROCKER_TEST_DMA_BUF_SIZE);
221 memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
222 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
223 dma_handle, buf, expect,
224 ROCKER_TEST_DMA_BUF_SIZE);
228 prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
229 for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
231 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
232 dma_handle, buf, expect,
233 ROCKER_TEST_DMA_BUF_SIZE);
238 pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
239 PCI_DMA_BIDIRECTIONAL);
246 static int rocker_dma_test(const struct rocker *rocker,
247 struct rocker_wait *wait)
252 for (i = 0; i < 8; i++) {
253 err = rocker_dma_test_offset(rocker, wait, i);
260 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
262 struct rocker_wait *wait = dev_id;
264 rocker_wait_wake_up(wait);
269 static int rocker_basic_hw_test(const struct rocker *rocker)
271 const struct pci_dev *pdev = rocker->pdev;
272 struct rocker_wait wait;
275 err = rocker_reg_test(rocker);
277 dev_err(&pdev->dev, "reg test failed\n");
281 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
282 rocker_test_irq_handler, 0,
283 rocker_driver_name, &wait);
285 dev_err(&pdev->dev, "cannot assign test irq\n");
289 rocker_wait_init(&wait);
290 rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
292 if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
293 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
298 err = rocker_dma_test(rocker, &wait);
300 dev_err(&pdev->dev, "dma test failed\n");
303 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
307 /******************************************
308 * DMA rings and descriptors manipulations
309 ******************************************/
311 static u32 __pos_inc(u32 pos, size_t limit)
313 return ++pos == limit ? 0 : pos;
316 static int rocker_desc_err(const struct rocker_desc_info *desc_info)
318 int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
333 case -ROCKER_EMSGSIZE:
335 case -ROCKER_ENOTSUP:
337 case -ROCKER_ENOBUFS:
344 static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
346 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
349 static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
351 u32 comp_err = desc_info->desc->comp_err;
353 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
357 rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
359 return (void *)(uintptr_t)desc_info->desc->cookie;
362 static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
365 desc_info->desc->cookie = (uintptr_t) ptr;
368 static struct rocker_desc_info *
369 rocker_desc_head_get(const struct rocker_dma_ring_info *info)
371 static struct rocker_desc_info *desc_info;
372 u32 head = __pos_inc(info->head, info->size);
374 desc_info = &info->desc_info[info->head];
375 if (head == info->tail)
376 return NULL; /* ring full */
377 desc_info->tlv_size = 0;
381 static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
383 desc_info->desc->buf_size = desc_info->data_size;
384 desc_info->desc->tlv_size = desc_info->tlv_size;
387 static void rocker_desc_head_set(const struct rocker *rocker,
388 struct rocker_dma_ring_info *info,
389 const struct rocker_desc_info *desc_info)
391 u32 head = __pos_inc(info->head, info->size);
393 BUG_ON(head == info->tail);
394 rocker_desc_commit(desc_info);
396 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
399 static struct rocker_desc_info *
400 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
402 static struct rocker_desc_info *desc_info;
404 if (info->tail == info->head)
405 return NULL; /* nothing to be done between head and tail */
406 desc_info = &info->desc_info[info->tail];
407 if (!rocker_desc_gen(desc_info))
408 return NULL; /* gen bit not set, desc is not ready yet */
409 info->tail = __pos_inc(info->tail, info->size);
410 desc_info->tlv_size = desc_info->desc->tlv_size;
414 static void rocker_dma_ring_credits_set(const struct rocker *rocker,
415 const struct rocker_dma_ring_info *info,
419 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
422 static unsigned long rocker_dma_ring_size_fix(size_t size)
424 return max(ROCKER_DMA_SIZE_MIN,
425 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
428 static int rocker_dma_ring_create(const struct rocker *rocker,
431 struct rocker_dma_ring_info *info)
435 BUG_ON(size != rocker_dma_ring_size_fix(size));
440 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
442 if (!info->desc_info)
445 info->desc = pci_alloc_consistent(rocker->pdev,
446 info->size * sizeof(*info->desc),
449 kfree(info->desc_info);
453 for (i = 0; i < info->size; i++)
454 info->desc_info[i].desc = &info->desc[i];
456 rocker_write32(rocker, DMA_DESC_CTRL(info->type),
457 ROCKER_DMA_DESC_CTRL_RESET);
458 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
459 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
464 static void rocker_dma_ring_destroy(const struct rocker *rocker,
465 const struct rocker_dma_ring_info *info)
467 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
469 pci_free_consistent(rocker->pdev,
470 info->size * sizeof(struct rocker_desc),
471 info->desc, info->mapaddr);
472 kfree(info->desc_info);
475 static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
476 struct rocker_dma_ring_info *info)
480 BUG_ON(info->head || info->tail);
482 /* When ring is consumer, we need to advance head for each desc.
483 * That tells hw that the desc is ready to be used by it.
485 for (i = 0; i < info->size - 1; i++)
486 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
487 rocker_desc_commit(&info->desc_info[i]);
490 static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
491 const struct rocker_dma_ring_info *info,
492 int direction, size_t buf_size)
494 struct pci_dev *pdev = rocker->pdev;
498 for (i = 0; i < info->size; i++) {
499 struct rocker_desc_info *desc_info = &info->desc_info[i];
500 struct rocker_desc *desc = &info->desc[i];
501 dma_addr_t dma_handle;
504 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
510 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
511 if (pci_dma_mapping_error(pdev, dma_handle)) {
517 desc_info->data = buf;
518 desc_info->data_size = buf_size;
519 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
521 desc->buf_addr = dma_handle;
522 desc->buf_size = buf_size;
527 for (i--; i >= 0; i--) {
528 const struct rocker_desc_info *desc_info = &info->desc_info[i];
530 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
531 desc_info->data_size, direction);
532 kfree(desc_info->data);
537 static void rocker_dma_ring_bufs_free(const struct rocker *rocker,
538 const struct rocker_dma_ring_info *info,
541 struct pci_dev *pdev = rocker->pdev;
544 for (i = 0; i < info->size; i++) {
545 const struct rocker_desc_info *desc_info = &info->desc_info[i];
546 struct rocker_desc *desc = &info->desc[i];
550 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
551 desc_info->data_size, direction);
552 kfree(desc_info->data);
556 static int rocker_dma_cmd_ring_wait_alloc(struct rocker_desc_info *desc_info)
558 struct rocker_wait *wait;
560 wait = rocker_wait_create();
563 rocker_desc_cookie_ptr_set(desc_info, wait);
568 rocker_dma_cmd_ring_wait_free(const struct rocker_desc_info *desc_info)
570 struct rocker_wait *wait = rocker_desc_cookie_ptr_get(desc_info);
572 rocker_wait_destroy(wait);
575 static int rocker_dma_cmd_ring_waits_alloc(const struct rocker *rocker)
577 const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring;
581 for (i = 0; i < cmd_ring->size; i++) {
582 err = rocker_dma_cmd_ring_wait_alloc(&cmd_ring->desc_info[i]);
589 for (i--; i >= 0; i--)
590 rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]);
594 static void rocker_dma_cmd_ring_waits_free(const struct rocker *rocker)
596 const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring;
599 for (i = 0; i < cmd_ring->size; i++)
600 rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]);
603 static int rocker_dma_rings_init(struct rocker *rocker)
605 const struct pci_dev *pdev = rocker->pdev;
608 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
609 ROCKER_DMA_CMD_DEFAULT_SIZE,
612 dev_err(&pdev->dev, "failed to create command dma ring\n");
616 spin_lock_init(&rocker->cmd_ring_lock);
618 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
619 PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
621 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
622 goto err_dma_cmd_ring_bufs_alloc;
625 err = rocker_dma_cmd_ring_waits_alloc(rocker);
627 dev_err(&pdev->dev, "failed to alloc command dma ring waits\n");
628 goto err_dma_cmd_ring_waits_alloc;
631 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
632 ROCKER_DMA_EVENT_DEFAULT_SIZE,
633 &rocker->event_ring);
635 dev_err(&pdev->dev, "failed to create event dma ring\n");
636 goto err_dma_event_ring_create;
639 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
640 PCI_DMA_FROMDEVICE, PAGE_SIZE);
642 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
643 goto err_dma_event_ring_bufs_alloc;
645 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
648 err_dma_event_ring_bufs_alloc:
649 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
650 err_dma_event_ring_create:
651 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
652 PCI_DMA_BIDIRECTIONAL);
653 err_dma_cmd_ring_waits_alloc:
654 rocker_dma_cmd_ring_waits_free(rocker);
655 err_dma_cmd_ring_bufs_alloc:
656 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
660 static void rocker_dma_rings_fini(struct rocker *rocker)
662 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
663 PCI_DMA_BIDIRECTIONAL);
664 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
665 rocker_dma_cmd_ring_waits_free(rocker);
666 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
667 PCI_DMA_BIDIRECTIONAL);
668 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
671 static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port,
672 struct rocker_desc_info *desc_info,
673 struct sk_buff *skb, size_t buf_len)
675 const struct rocker *rocker = rocker_port->rocker;
676 struct pci_dev *pdev = rocker->pdev;
677 dma_addr_t dma_handle;
679 dma_handle = pci_map_single(pdev, skb->data, buf_len,
681 if (pci_dma_mapping_error(pdev, dma_handle))
683 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
684 goto tlv_put_failure;
685 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
686 goto tlv_put_failure;
690 pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
691 desc_info->tlv_size = 0;
695 static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port)
697 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
700 static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port,
701 struct rocker_desc_info *desc_info)
703 struct net_device *dev = rocker_port->dev;
705 size_t buf_len = rocker_port_rx_buf_len(rocker_port);
708 /* Ensure that hw will see tlv_size zero in case of an error.
709 * That tells hw to use another descriptor.
711 rocker_desc_cookie_ptr_set(desc_info, NULL);
712 desc_info->tlv_size = 0;
714 skb = netdev_alloc_skb_ip_align(dev, buf_len);
717 err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len);
719 dev_kfree_skb_any(skb);
722 rocker_desc_cookie_ptr_set(desc_info, skb);
726 static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker,
727 const struct rocker_tlv **attrs)
729 struct pci_dev *pdev = rocker->pdev;
730 dma_addr_t dma_handle;
733 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
734 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
736 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
737 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
738 pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
741 static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker,
742 const struct rocker_desc_info *desc_info)
744 const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
745 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
749 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
750 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
751 dev_kfree_skb_any(skb);
754 static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port)
756 const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
757 const struct rocker *rocker = rocker_port->rocker;
761 for (i = 0; i < rx_ring->size; i++) {
762 err = rocker_dma_rx_ring_skb_alloc(rocker_port,
763 &rx_ring->desc_info[i]);
770 for (i--; i >= 0; i--)
771 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
775 static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port)
777 const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
778 const struct rocker *rocker = rocker_port->rocker;
781 for (i = 0; i < rx_ring->size; i++)
782 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
785 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
787 struct rocker *rocker = rocker_port->rocker;
790 err = rocker_dma_ring_create(rocker,
791 ROCKER_DMA_TX(rocker_port->port_number),
792 ROCKER_DMA_TX_DEFAULT_SIZE,
793 &rocker_port->tx_ring);
795 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
799 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
801 ROCKER_DMA_TX_DESC_SIZE);
803 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
804 goto err_dma_tx_ring_bufs_alloc;
807 err = rocker_dma_ring_create(rocker,
808 ROCKER_DMA_RX(rocker_port->port_number),
809 ROCKER_DMA_RX_DEFAULT_SIZE,
810 &rocker_port->rx_ring);
812 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
813 goto err_dma_rx_ring_create;
816 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
817 PCI_DMA_BIDIRECTIONAL,
818 ROCKER_DMA_RX_DESC_SIZE);
820 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
821 goto err_dma_rx_ring_bufs_alloc;
824 err = rocker_dma_rx_ring_skbs_alloc(rocker_port);
826 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
827 goto err_dma_rx_ring_skbs_alloc;
829 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
833 err_dma_rx_ring_skbs_alloc:
834 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
835 PCI_DMA_BIDIRECTIONAL);
836 err_dma_rx_ring_bufs_alloc:
837 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
838 err_dma_rx_ring_create:
839 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
841 err_dma_tx_ring_bufs_alloc:
842 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
846 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
848 struct rocker *rocker = rocker_port->rocker;
850 rocker_dma_rx_ring_skbs_free(rocker_port);
851 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
852 PCI_DMA_BIDIRECTIONAL);
853 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
854 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
856 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
859 static void rocker_port_set_enable(const struct rocker_port *rocker_port,
862 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
865 val |= 1ULL << rocker_port->pport;
867 val &= ~(1ULL << rocker_port->pport);
868 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
871 /********************************
872 * Interrupt handler and helpers
873 ********************************/
875 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
877 struct rocker *rocker = dev_id;
878 const struct rocker_desc_info *desc_info;
879 struct rocker_wait *wait;
882 spin_lock(&rocker->cmd_ring_lock);
883 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
884 wait = rocker_desc_cookie_ptr_get(desc_info);
886 rocker_desc_gen_clear(desc_info);
888 rocker_wait_wake_up(wait);
892 spin_unlock(&rocker->cmd_ring_lock);
893 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
898 static void rocker_port_link_up(const struct rocker_port *rocker_port)
900 netif_carrier_on(rocker_port->dev);
901 netdev_info(rocker_port->dev, "Link is up\n");
904 static void rocker_port_link_down(const struct rocker_port *rocker_port)
906 netif_carrier_off(rocker_port->dev);
907 netdev_info(rocker_port->dev, "Link is down\n");
910 static int rocker_event_link_change(const struct rocker *rocker,
911 const struct rocker_tlv *info)
913 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
914 unsigned int port_number;
916 struct rocker_port *rocker_port;
918 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
919 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
920 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
923 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
924 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
926 if (port_number >= rocker->port_count)
929 rocker_port = rocker->ports[port_number];
930 if (netif_carrier_ok(rocker_port->dev) != link_up) {
932 rocker_port_link_up(rocker_port);
934 rocker_port_link_down(rocker_port);
940 static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
941 const unsigned char *addr,
944 static int rocker_event_mac_vlan_seen(const struct rocker *rocker,
945 const struct rocker_tlv *info)
947 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
948 unsigned int port_number;
949 struct rocker_port *rocker_port;
950 const unsigned char *addr;
953 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
954 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
955 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
956 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
959 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
960 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
961 vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
963 if (port_number >= rocker->port_count)
966 rocker_port = rocker->ports[port_number];
967 return rocker_world_port_ev_mac_vlan_seen(rocker_port, addr, vlan_id);
970 static int rocker_event_process(const struct rocker *rocker,
971 const struct rocker_desc_info *desc_info)
973 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
974 const struct rocker_tlv *info;
977 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
978 if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
979 !attrs[ROCKER_TLV_EVENT_INFO])
982 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
983 info = attrs[ROCKER_TLV_EVENT_INFO];
986 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
987 return rocker_event_link_change(rocker, info);
988 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
989 return rocker_event_mac_vlan_seen(rocker, info);
995 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
997 struct rocker *rocker = dev_id;
998 const struct pci_dev *pdev = rocker->pdev;
999 const struct rocker_desc_info *desc_info;
1003 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1004 err = rocker_desc_err(desc_info);
1006 dev_err(&pdev->dev, "event desc received with err %d\n",
1009 err = rocker_event_process(rocker, desc_info);
1011 dev_err(&pdev->dev, "event processing failed with err %d\n",
1014 rocker_desc_gen_clear(desc_info);
1015 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1018 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1023 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1025 struct rocker_port *rocker_port = dev_id;
1027 napi_schedule(&rocker_port->napi_tx);
1031 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1033 struct rocker_port *rocker_port = dev_id;
1035 napi_schedule(&rocker_port->napi_rx);
1039 /********************
1041 ********************/
1043 int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait,
1044 rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1045 rocker_cmd_proc_cb_t process, void *process_priv)
1047 struct rocker *rocker = rocker_port->rocker;
1048 struct rocker_desc_info *desc_info;
1049 struct rocker_wait *wait;
1050 unsigned long lock_flags;
1053 spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1055 desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1057 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1061 wait = rocker_desc_cookie_ptr_get(desc_info);
1062 rocker_wait_init(wait);
1063 wait->nowait = nowait;
1065 err = prepare(rocker_port, desc_info, prepare_priv);
1067 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1071 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1073 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1078 if (!rocker_wait_event_timeout(wait, HZ / 10))
1081 err = rocker_desc_err(desc_info);
1086 err = process(rocker_port, desc_info, process_priv);
1088 rocker_desc_gen_clear(desc_info);
1093 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1094 struct rocker_desc_info *desc_info,
1097 struct rocker_tlv *cmd_info;
1099 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1100 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1102 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1105 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1106 rocker_port->pport))
1108 rocker_tlv_nest_end(desc_info, cmd_info);
1113 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1114 const struct rocker_desc_info *desc_info,
1117 struct ethtool_cmd *ecmd = priv;
1118 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1119 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1124 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1125 if (!attrs[ROCKER_TLV_CMD_INFO])
1128 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1129 attrs[ROCKER_TLV_CMD_INFO]);
1130 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1131 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1132 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1135 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1136 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1137 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1139 ecmd->transceiver = XCVR_INTERNAL;
1140 ecmd->supported = SUPPORTED_TP;
1141 ecmd->phy_address = 0xff;
1142 ecmd->port = PORT_TP;
1143 ethtool_cmd_speed_set(ecmd, speed);
1144 ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1145 ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1151 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1152 const struct rocker_desc_info *desc_info,
1155 unsigned char *macaddr = priv;
1156 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1157 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1158 const struct rocker_tlv *attr;
1160 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1161 if (!attrs[ROCKER_TLV_CMD_INFO])
1164 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1165 attrs[ROCKER_TLV_CMD_INFO]);
1166 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1170 if (rocker_tlv_len(attr) != ETH_ALEN)
1173 ether_addr_copy(macaddr, rocker_tlv_data(attr));
1178 rocker_cmd_get_port_settings_mode_proc(const struct rocker_port *rocker_port,
1179 const struct rocker_desc_info *desc_info,
1183 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1184 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1185 const struct rocker_tlv *attr;
1187 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1188 if (!attrs[ROCKER_TLV_CMD_INFO])
1191 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1192 attrs[ROCKER_TLV_CMD_INFO]);
1193 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE];
1197 *p_mode = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]);
1207 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1208 const struct rocker_desc_info *desc_info,
1211 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1212 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1213 struct port_name *name = priv;
1214 const struct rocker_tlv *attr;
1218 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1219 if (!attrs[ROCKER_TLV_CMD_INFO])
1222 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1223 attrs[ROCKER_TLV_CMD_INFO]);
1224 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1228 len = min_t(size_t, rocker_tlv_len(attr), name->len);
1229 str = rocker_tlv_data(attr);
1231 /* make sure name only contains alphanumeric characters */
1232 for (i = j = 0; i < len; ++i) {
1233 if (isalnum(str[i])) {
1234 name->buf[j] = str[i];
1242 name->buf[j] = '\0';
1248 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1249 struct rocker_desc_info *desc_info,
1252 struct ethtool_cmd *ecmd = priv;
1253 struct rocker_tlv *cmd_info;
1255 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1256 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1258 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1261 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1262 rocker_port->pport))
1264 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1265 ethtool_cmd_speed(ecmd)))
1267 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1270 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1273 rocker_tlv_nest_end(desc_info, cmd_info);
1278 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1279 struct rocker_desc_info *desc_info,
1282 const unsigned char *macaddr = priv;
1283 struct rocker_tlv *cmd_info;
1285 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1286 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1288 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1291 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1292 rocker_port->pport))
1294 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1297 rocker_tlv_nest_end(desc_info, cmd_info);
1302 rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port,
1303 struct rocker_desc_info *desc_info,
1306 int mtu = *(int *)priv;
1307 struct rocker_tlv *cmd_info;
1309 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1310 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1312 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1315 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1316 rocker_port->pport))
1318 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU,
1321 rocker_tlv_nest_end(desc_info, cmd_info);
1326 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1327 struct rocker_desc_info *desc_info,
1330 bool learning = *(bool *)priv;
1331 struct rocker_tlv *cmd_info;
1333 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1334 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1336 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1339 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1340 rocker_port->pport))
1342 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1345 rocker_tlv_nest_end(desc_info, cmd_info);
1349 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1350 struct ethtool_cmd *ecmd)
1352 return rocker_cmd_exec(rocker_port, false,
1353 rocker_cmd_get_port_settings_prep, NULL,
1354 rocker_cmd_get_port_settings_ethtool_proc,
1358 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1359 unsigned char *macaddr)
1361 return rocker_cmd_exec(rocker_port, false,
1362 rocker_cmd_get_port_settings_prep, NULL,
1363 rocker_cmd_get_port_settings_macaddr_proc,
1367 static int rocker_cmd_get_port_settings_mode(struct rocker_port *rocker_port,
1370 return rocker_cmd_exec(rocker_port, false,
1371 rocker_cmd_get_port_settings_prep, NULL,
1372 rocker_cmd_get_port_settings_mode_proc, p_mode);
1375 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1376 struct ethtool_cmd *ecmd)
1378 return rocker_cmd_exec(rocker_port, false,
1379 rocker_cmd_set_port_settings_ethtool_prep,
1383 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1384 unsigned char *macaddr)
1386 return rocker_cmd_exec(rocker_port, false,
1387 rocker_cmd_set_port_settings_macaddr_prep,
1388 macaddr, NULL, NULL);
1391 static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port,
1394 return rocker_cmd_exec(rocker_port, false,
1395 rocker_cmd_set_port_settings_mtu_prep,
1399 int rocker_port_set_learning(struct rocker_port *rocker_port,
1402 return rocker_cmd_exec(rocker_port, false,
1403 rocker_cmd_set_port_learning_prep,
1404 &learning, NULL, NULL);
1407 /**********************
1408 * Worlds manipulation
1409 **********************/
1411 static struct rocker_world_ops *rocker_world_ops[] = {
1415 #define ROCKER_WORLD_OPS_LEN ARRAY_SIZE(rocker_world_ops)
1417 static struct rocker_world_ops *rocker_world_ops_find(u8 mode)
1421 for (i = 0; i < ROCKER_WORLD_OPS_LEN; i++)
1422 if (rocker_world_ops[i]->mode == mode)
1423 return rocker_world_ops[i];
1427 static int rocker_world_init(struct rocker *rocker, u8 mode)
1429 struct rocker_world_ops *wops;
1432 wops = rocker_world_ops_find(mode);
1434 dev_err(&rocker->pdev->dev, "port mode \"%d\" is not supported\n",
1438 rocker->wops = wops;
1439 rocker->wpriv = kzalloc(wops->priv_size, GFP_KERNEL);
1444 err = wops->init(rocker);
1446 kfree(rocker->wpriv);
1450 static void rocker_world_fini(struct rocker *rocker)
1452 struct rocker_world_ops *wops = rocker->wops;
1454 if (!wops || !wops->fini)
1457 kfree(rocker->wpriv);
1460 static int rocker_world_check_init(struct rocker_port *rocker_port)
1462 struct rocker *rocker = rocker_port->rocker;
1466 err = rocker_cmd_get_port_settings_mode(rocker_port, &mode);
1468 dev_err(&rocker->pdev->dev, "failed to get port mode\n");
1472 if (rocker->wops->mode != mode) {
1473 dev_err(&rocker->pdev->dev, "hardware has ports in different worlds, which is not supported\n");
1478 return rocker_world_init(rocker, mode);
1481 static int rocker_world_port_pre_init(struct rocker_port *rocker_port)
1483 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1486 rocker_port->wpriv = kzalloc(wops->port_priv_size, GFP_KERNEL);
1487 if (!rocker_port->wpriv)
1489 if (!wops->port_pre_init)
1491 err = wops->port_pre_init(rocker_port);
1493 kfree(rocker_port->wpriv);
1497 static int rocker_world_port_init(struct rocker_port *rocker_port)
1499 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1501 if (!wops->port_init)
1503 return wops->port_init(rocker_port);
1506 static void rocker_world_port_fini(struct rocker_port *rocker_port)
1508 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1510 if (!wops->port_fini)
1512 wops->port_fini(rocker_port);
1515 static void rocker_world_port_post_fini(struct rocker_port *rocker_port)
1517 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1519 if (!wops->port_post_fini)
1521 wops->port_post_fini(rocker_port);
1522 kfree(rocker_port->wpriv);
1525 static int rocker_world_port_open(struct rocker_port *rocker_port)
1527 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1529 if (!wops->port_open)
1531 return wops->port_open(rocker_port);
1534 static void rocker_world_port_stop(struct rocker_port *rocker_port)
1536 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1538 if (!wops->port_stop)
1540 wops->port_stop(rocker_port);
1543 static int rocker_world_port_attr_stp_state_set(struct rocker_port *rocker_port,
1545 struct switchdev_trans *trans)
1547 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1549 if (!wops->port_attr_stp_state_set)
1551 return wops->port_attr_stp_state_set(rocker_port, state, trans);
1555 rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port,
1556 unsigned long brport_flags,
1557 struct switchdev_trans *trans)
1559 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1561 if (!wops->port_attr_bridge_flags_set)
1563 return wops->port_attr_bridge_flags_set(rocker_port, brport_flags,
1568 rocker_world_port_attr_bridge_flags_get(const struct rocker_port *rocker_port,
1569 unsigned long *p_brport_flags)
1571 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1573 if (!wops->port_attr_bridge_flags_get)
1575 return wops->port_attr_bridge_flags_get(rocker_port, p_brport_flags);
1579 rocker_world_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port,
1581 struct switchdev_trans *trans)
1584 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1586 if (!wops->port_attr_bridge_ageing_time_set)
1588 return wops->port_attr_bridge_ageing_time_set(rocker_port, ageing_time,
1593 rocker_world_port_obj_vlan_add(struct rocker_port *rocker_port,
1594 const struct switchdev_obj_port_vlan *vlan,
1595 struct switchdev_trans *trans)
1597 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1599 if (!wops->port_obj_vlan_add)
1601 return wops->port_obj_vlan_add(rocker_port, vlan, trans);
1605 rocker_world_port_obj_vlan_del(struct rocker_port *rocker_port,
1606 const struct switchdev_obj_port_vlan *vlan)
1608 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1610 if (!wops->port_obj_vlan_del)
1612 return wops->port_obj_vlan_del(rocker_port, vlan);
1616 rocker_world_port_obj_vlan_dump(const struct rocker_port *rocker_port,
1617 struct switchdev_obj_port_vlan *vlan,
1618 switchdev_obj_dump_cb_t *cb)
1620 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1622 if (!wops->port_obj_vlan_dump)
1624 return wops->port_obj_vlan_dump(rocker_port, vlan, cb);
1628 rocker_world_port_obj_fib4_add(struct rocker_port *rocker_port,
1629 const struct switchdev_obj_ipv4_fib *fib4,
1630 struct switchdev_trans *trans)
1632 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1634 if (!wops->port_obj_fib4_add)
1636 return wops->port_obj_fib4_add(rocker_port, fib4, trans);
1640 rocker_world_port_obj_fib4_del(struct rocker_port *rocker_port,
1641 const struct switchdev_obj_ipv4_fib *fib4)
1643 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1645 if (!wops->port_obj_fib4_del)
1647 return wops->port_obj_fib4_del(rocker_port, fib4);
1651 rocker_world_port_obj_fdb_add(struct rocker_port *rocker_port,
1652 const struct switchdev_obj_port_fdb *fdb,
1653 struct switchdev_trans *trans)
1655 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1657 if (!wops->port_obj_fdb_add)
1659 return wops->port_obj_fdb_add(rocker_port, fdb, trans);
1663 rocker_world_port_obj_fdb_del(struct rocker_port *rocker_port,
1664 const struct switchdev_obj_port_fdb *fdb)
1666 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1668 if (!wops->port_obj_fdb_del)
1670 return wops->port_obj_fdb_del(rocker_port, fdb);
1674 rocker_world_port_obj_fdb_dump(const struct rocker_port *rocker_port,
1675 struct switchdev_obj_port_fdb *fdb,
1676 switchdev_obj_dump_cb_t *cb)
1678 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1680 if (!wops->port_obj_fdb_dump)
1682 return wops->port_obj_fdb_dump(rocker_port, fdb, cb);
1685 static int rocker_world_port_master_linked(struct rocker_port *rocker_port,
1686 struct net_device *master)
1688 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1690 if (!wops->port_master_linked)
1692 return wops->port_master_linked(rocker_port, master);
1695 static int rocker_world_port_master_unlinked(struct rocker_port *rocker_port,
1696 struct net_device *master)
1698 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1700 if (!wops->port_master_unlinked)
1702 return wops->port_master_unlinked(rocker_port, master);
1705 static int rocker_world_port_neigh_update(struct rocker_port *rocker_port,
1706 struct neighbour *n)
1708 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1710 if (!wops->port_neigh_update)
1712 return wops->port_neigh_update(rocker_port, n);
1715 static int rocker_world_port_neigh_destroy(struct rocker_port *rocker_port,
1716 struct neighbour *n)
1718 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1720 if (!wops->port_neigh_destroy)
1722 return wops->port_neigh_destroy(rocker_port, n);
1725 static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
1726 const unsigned char *addr,
1729 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1731 if (!wops->port_ev_mac_vlan_seen)
1733 return wops->port_ev_mac_vlan_seen(rocker_port, addr, vlan_id);
1740 static int rocker_port_open(struct net_device *dev)
1742 struct rocker_port *rocker_port = netdev_priv(dev);
1745 err = rocker_port_dma_rings_init(rocker_port);
1749 err = request_irq(rocker_msix_tx_vector(rocker_port),
1750 rocker_tx_irq_handler, 0,
1751 rocker_driver_name, rocker_port);
1753 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
1754 goto err_request_tx_irq;
1757 err = request_irq(rocker_msix_rx_vector(rocker_port),
1758 rocker_rx_irq_handler, 0,
1759 rocker_driver_name, rocker_port);
1761 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
1762 goto err_request_rx_irq;
1765 err = rocker_world_port_open(rocker_port);
1767 netdev_err(rocker_port->dev, "cannot open port in world\n");
1768 goto err_world_port_open;
1771 napi_enable(&rocker_port->napi_tx);
1772 napi_enable(&rocker_port->napi_rx);
1773 if (!dev->proto_down)
1774 rocker_port_set_enable(rocker_port, true);
1775 netif_start_queue(dev);
1778 err_world_port_open:
1779 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
1781 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
1783 rocker_port_dma_rings_fini(rocker_port);
1787 static int rocker_port_stop(struct net_device *dev)
1789 struct rocker_port *rocker_port = netdev_priv(dev);
1791 netif_stop_queue(dev);
1792 rocker_port_set_enable(rocker_port, false);
1793 napi_disable(&rocker_port->napi_rx);
1794 napi_disable(&rocker_port->napi_tx);
1795 rocker_world_port_stop(rocker_port);
1796 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
1797 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
1798 rocker_port_dma_rings_fini(rocker_port);
1803 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
1804 const struct rocker_desc_info *desc_info)
1806 const struct rocker *rocker = rocker_port->rocker;
1807 struct pci_dev *pdev = rocker->pdev;
1808 const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
1809 struct rocker_tlv *attr;
1812 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
1813 if (!attrs[ROCKER_TLV_TX_FRAGS])
1815 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
1816 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
1817 dma_addr_t dma_handle;
1820 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
1822 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
1824 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
1825 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
1827 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
1828 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
1829 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
1833 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
1834 struct rocker_desc_info *desc_info,
1835 char *buf, size_t buf_len)
1837 const struct rocker *rocker = rocker_port->rocker;
1838 struct pci_dev *pdev = rocker->pdev;
1839 dma_addr_t dma_handle;
1840 struct rocker_tlv *frag;
1842 dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
1843 if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
1844 if (net_ratelimit())
1845 netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
1848 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
1851 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
1854 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
1857 rocker_tlv_nest_end(desc_info, frag);
1861 rocker_tlv_nest_cancel(desc_info, frag);
1863 pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
1867 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
1869 struct rocker_port *rocker_port = netdev_priv(dev);
1870 struct rocker *rocker = rocker_port->rocker;
1871 struct rocker_desc_info *desc_info;
1872 struct rocker_tlv *frags;
1876 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
1877 if (unlikely(!desc_info)) {
1878 if (net_ratelimit())
1879 netdev_err(dev, "tx ring full when queue awake\n");
1880 return NETDEV_TX_BUSY;
1883 rocker_desc_cookie_ptr_set(desc_info, skb);
1885 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
1888 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
1889 skb->data, skb_headlen(skb));
1892 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) {
1893 err = skb_linearize(skb);
1898 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1899 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1901 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
1902 skb_frag_address(frag),
1903 skb_frag_size(frag));
1907 rocker_tlv_nest_end(desc_info, frags);
1909 rocker_desc_gen_clear(desc_info);
1910 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
1912 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
1914 netif_stop_queue(dev);
1916 return NETDEV_TX_OK;
1919 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
1921 rocker_tlv_nest_cancel(desc_info, frags);
1924 dev->stats.tx_dropped++;
1926 return NETDEV_TX_OK;
1929 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
1931 struct sockaddr *addr = p;
1932 struct rocker_port *rocker_port = netdev_priv(dev);
1935 if (!is_valid_ether_addr(addr->sa_data))
1936 return -EADDRNOTAVAIL;
1938 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
1941 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1945 static int rocker_port_change_mtu(struct net_device *dev, int new_mtu)
1947 struct rocker_port *rocker_port = netdev_priv(dev);
1948 int running = netif_running(dev);
1951 #define ROCKER_PORT_MIN_MTU 68
1952 #define ROCKER_PORT_MAX_MTU 9000
1954 if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU)
1958 rocker_port_stop(dev);
1960 netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu);
1963 err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu);
1968 err = rocker_port_open(dev);
1973 static int rocker_port_get_phys_port_name(struct net_device *dev,
1974 char *buf, size_t len)
1976 struct rocker_port *rocker_port = netdev_priv(dev);
1977 struct port_name name = { .buf = buf, .len = len };
1980 err = rocker_cmd_exec(rocker_port, false,
1981 rocker_cmd_get_port_settings_prep, NULL,
1982 rocker_cmd_get_port_settings_phys_name_proc,
1985 return err ? -EOPNOTSUPP : 0;
1988 static int rocker_port_change_proto_down(struct net_device *dev,
1991 struct rocker_port *rocker_port = netdev_priv(dev);
1993 if (rocker_port->dev->flags & IFF_UP)
1994 rocker_port_set_enable(rocker_port, !proto_down);
1995 rocker_port->dev->proto_down = proto_down;
1999 static void rocker_port_neigh_destroy(struct neighbour *n)
2001 struct rocker_port *rocker_port = netdev_priv(n->dev);
2004 err = rocker_world_port_neigh_destroy(rocker_port, n);
2006 netdev_warn(rocker_port->dev, "failed to handle neigh destroy (err %d)\n",
2010 static const struct net_device_ops rocker_port_netdev_ops = {
2011 .ndo_open = rocker_port_open,
2012 .ndo_stop = rocker_port_stop,
2013 .ndo_start_xmit = rocker_port_xmit,
2014 .ndo_set_mac_address = rocker_port_set_mac_address,
2015 .ndo_change_mtu = rocker_port_change_mtu,
2016 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
2017 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
2018 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
2019 .ndo_fdb_add = switchdev_port_fdb_add,
2020 .ndo_fdb_del = switchdev_port_fdb_del,
2021 .ndo_fdb_dump = switchdev_port_fdb_dump,
2022 .ndo_get_phys_port_name = rocker_port_get_phys_port_name,
2023 .ndo_change_proto_down = rocker_port_change_proto_down,
2024 .ndo_neigh_destroy = rocker_port_neigh_destroy,
2027 /********************
2029 ********************/
2031 static int rocker_port_attr_get(struct net_device *dev,
2032 struct switchdev_attr *attr)
2034 const struct rocker_port *rocker_port = netdev_priv(dev);
2035 const struct rocker *rocker = rocker_port->rocker;
2039 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
2040 attr->u.ppid.id_len = sizeof(rocker->hw.id);
2041 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
2043 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
2044 err = rocker_world_port_attr_bridge_flags_get(rocker_port,
2045 &attr->u.brport_flags);
2054 static int rocker_port_attr_set(struct net_device *dev,
2055 const struct switchdev_attr *attr,
2056 struct switchdev_trans *trans)
2058 struct rocker_port *rocker_port = netdev_priv(dev);
2062 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
2063 err = rocker_world_port_attr_stp_state_set(rocker_port,
2067 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
2068 err = rocker_world_port_attr_bridge_flags_set(rocker_port,
2069 attr->u.brport_flags,
2072 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
2073 err = rocker_world_port_attr_bridge_ageing_time_set(rocker_port,
2074 attr->u.ageing_time,
2085 static int rocker_port_obj_add(struct net_device *dev,
2086 const struct switchdev_obj *obj,
2087 struct switchdev_trans *trans)
2089 struct rocker_port *rocker_port = netdev_priv(dev);
2093 case SWITCHDEV_OBJ_ID_PORT_VLAN:
2094 err = rocker_world_port_obj_vlan_add(rocker_port,
2095 SWITCHDEV_OBJ_PORT_VLAN(obj),
2098 case SWITCHDEV_OBJ_ID_IPV4_FIB:
2099 err = rocker_world_port_obj_fib4_add(rocker_port,
2100 SWITCHDEV_OBJ_IPV4_FIB(obj),
2103 case SWITCHDEV_OBJ_ID_PORT_FDB:
2104 err = rocker_world_port_obj_fdb_add(rocker_port,
2105 SWITCHDEV_OBJ_PORT_FDB(obj),
2116 static int rocker_port_obj_del(struct net_device *dev,
2117 const struct switchdev_obj *obj)
2119 struct rocker_port *rocker_port = netdev_priv(dev);
2123 case SWITCHDEV_OBJ_ID_PORT_VLAN:
2124 err = rocker_world_port_obj_vlan_del(rocker_port,
2125 SWITCHDEV_OBJ_PORT_VLAN(obj));
2127 case SWITCHDEV_OBJ_ID_IPV4_FIB:
2128 err = rocker_world_port_obj_fib4_del(rocker_port,
2129 SWITCHDEV_OBJ_IPV4_FIB(obj));
2131 case SWITCHDEV_OBJ_ID_PORT_FDB:
2132 err = rocker_world_port_obj_fdb_del(rocker_port,
2133 SWITCHDEV_OBJ_PORT_FDB(obj));
2143 static int rocker_port_obj_dump(struct net_device *dev,
2144 struct switchdev_obj *obj,
2145 switchdev_obj_dump_cb_t *cb)
2147 const struct rocker_port *rocker_port = netdev_priv(dev);
2151 case SWITCHDEV_OBJ_ID_PORT_FDB:
2152 err = rocker_world_port_obj_fdb_dump(rocker_port,
2153 SWITCHDEV_OBJ_PORT_FDB(obj),
2156 case SWITCHDEV_OBJ_ID_PORT_VLAN:
2157 err = rocker_world_port_obj_vlan_dump(rocker_port,
2158 SWITCHDEV_OBJ_PORT_VLAN(obj),
2169 static const struct switchdev_ops rocker_port_switchdev_ops = {
2170 .switchdev_port_attr_get = rocker_port_attr_get,
2171 .switchdev_port_attr_set = rocker_port_attr_set,
2172 .switchdev_port_obj_add = rocker_port_obj_add,
2173 .switchdev_port_obj_del = rocker_port_obj_del,
2174 .switchdev_port_obj_dump = rocker_port_obj_dump,
2177 /********************
2179 ********************/
2181 static int rocker_port_get_settings(struct net_device *dev,
2182 struct ethtool_cmd *ecmd)
2184 struct rocker_port *rocker_port = netdev_priv(dev);
2186 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
2189 static int rocker_port_set_settings(struct net_device *dev,
2190 struct ethtool_cmd *ecmd)
2192 struct rocker_port *rocker_port = netdev_priv(dev);
2194 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
2197 static void rocker_port_get_drvinfo(struct net_device *dev,
2198 struct ethtool_drvinfo *drvinfo)
2200 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
2201 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
2204 static struct rocker_port_stats {
2205 char str[ETH_GSTRING_LEN];
2207 } rocker_port_stats[] = {
2208 { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, },
2209 { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, },
2210 { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
2211 { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, },
2213 { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, },
2214 { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, },
2215 { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
2216 { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, },
2219 #define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats)
2221 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
2227 switch (stringset) {
2229 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
2230 memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
2231 p += ETH_GSTRING_LEN;
2238 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
2239 struct rocker_desc_info *desc_info,
2242 struct rocker_tlv *cmd_stats;
2244 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
2245 ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
2248 cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2252 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
2253 rocker_port->pport))
2256 rocker_tlv_nest_end(desc_info, cmd_stats);
2262 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
2263 const struct rocker_desc_info *desc_info,
2266 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
2267 const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
2268 const struct rocker_tlv *pattr;
2273 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
2275 if (!attrs[ROCKER_TLV_CMD_INFO])
2278 rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
2279 attrs[ROCKER_TLV_CMD_INFO]);
2281 if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
2284 pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
2285 if (pport != rocker_port->pport)
2288 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
2289 pattr = stats_attrs[rocker_port_stats[i].type];
2293 data[i] = rocker_tlv_get_u64(pattr);
2299 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
2302 return rocker_cmd_exec(rocker_port, false,
2303 rocker_cmd_get_port_stats_prep, NULL,
2304 rocker_cmd_get_port_stats_ethtool_proc,
2308 static void rocker_port_get_stats(struct net_device *dev,
2309 struct ethtool_stats *stats, u64 *data)
2311 struct rocker_port *rocker_port = netdev_priv(dev);
2313 if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
2316 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
2321 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
2325 return ROCKER_PORT_STATS_LEN;
2331 static const struct ethtool_ops rocker_port_ethtool_ops = {
2332 .get_settings = rocker_port_get_settings,
2333 .set_settings = rocker_port_set_settings,
2334 .get_drvinfo = rocker_port_get_drvinfo,
2335 .get_link = ethtool_op_get_link,
2336 .get_strings = rocker_port_get_strings,
2337 .get_ethtool_stats = rocker_port_get_stats,
2338 .get_sset_count = rocker_port_get_sset_count,
2345 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
2347 return container_of(napi, struct rocker_port, napi_tx);
2350 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
2352 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
2353 const struct rocker *rocker = rocker_port->rocker;
2354 const struct rocker_desc_info *desc_info;
2358 /* Cleanup tx descriptors */
2359 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
2360 struct sk_buff *skb;
2362 err = rocker_desc_err(desc_info);
2363 if (err && net_ratelimit())
2364 netdev_err(rocker_port->dev, "tx desc received with err %d\n",
2366 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
2368 skb = rocker_desc_cookie_ptr_get(desc_info);
2370 rocker_port->dev->stats.tx_packets++;
2371 rocker_port->dev->stats.tx_bytes += skb->len;
2373 rocker_port->dev->stats.tx_errors++;
2376 dev_kfree_skb_any(skb);
2380 if (credits && netif_queue_stopped(rocker_port->dev))
2381 netif_wake_queue(rocker_port->dev);
2383 napi_complete(napi);
2384 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
2389 static int rocker_port_rx_proc(const struct rocker *rocker,
2390 const struct rocker_port *rocker_port,
2391 struct rocker_desc_info *desc_info)
2393 const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
2394 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
2401 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
2402 if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
2404 if (attrs[ROCKER_TLV_RX_FLAGS])
2405 rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]);
2407 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
2409 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
2410 skb_put(skb, rx_len);
2411 skb->protocol = eth_type_trans(skb, rocker_port->dev);
2413 if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD)
2414 skb->offload_fwd_mark = rocker_port->dev->offload_fwd_mark;
2416 rocker_port->dev->stats.rx_packets++;
2417 rocker_port->dev->stats.rx_bytes += skb->len;
2419 netif_receive_skb(skb);
2421 return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
2424 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
2426 return container_of(napi, struct rocker_port, napi_rx);
2429 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
2431 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
2432 const struct rocker *rocker = rocker_port->rocker;
2433 struct rocker_desc_info *desc_info;
2437 /* Process rx descriptors */
2438 while (credits < budget &&
2439 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
2440 err = rocker_desc_err(desc_info);
2442 if (net_ratelimit())
2443 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
2446 err = rocker_port_rx_proc(rocker, rocker_port,
2448 if (err && net_ratelimit())
2449 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
2453 rocker_port->dev->stats.rx_errors++;
2455 rocker_desc_gen_clear(desc_info);
2456 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
2460 if (credits < budget)
2461 napi_complete(napi);
2463 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
2472 static void rocker_carrier_init(const struct rocker_port *rocker_port)
2474 const struct rocker *rocker = rocker_port->rocker;
2475 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
2478 link_up = link_status & (1 << rocker_port->pport);
2480 netif_carrier_on(rocker_port->dev);
2482 netif_carrier_off(rocker_port->dev);
2485 static void rocker_remove_ports(struct rocker *rocker)
2487 struct rocker_port *rocker_port;
2490 for (i = 0; i < rocker->port_count; i++) {
2491 rocker_port = rocker->ports[i];
2494 rocker_world_port_fini(rocker_port);
2495 unregister_netdev(rocker_port->dev);
2496 rocker_world_port_post_fini(rocker_port);
2497 free_netdev(rocker_port->dev);
2499 rocker_world_fini(rocker);
2500 kfree(rocker->ports);
2503 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
2505 const struct rocker *rocker = rocker_port->rocker;
2506 const struct pci_dev *pdev = rocker->pdev;
2509 err = rocker_cmd_get_port_settings_macaddr(rocker_port,
2510 rocker_port->dev->dev_addr);
2512 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
2513 eth_hw_addr_random(rocker_port->dev);
2517 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
2519 const struct pci_dev *pdev = rocker->pdev;
2520 struct rocker_port *rocker_port;
2521 struct net_device *dev;
2524 dev = alloc_etherdev(sizeof(struct rocker_port));
2527 rocker_port = netdev_priv(dev);
2528 rocker_port->dev = dev;
2529 rocker_port->rocker = rocker;
2530 rocker_port->port_number = port_number;
2531 rocker_port->pport = port_number + 1;
2533 err = rocker_world_check_init(rocker_port);
2535 dev_err(&pdev->dev, "world init failed\n");
2536 goto err_world_check_init;
2539 rocker_port_dev_addr_init(rocker_port);
2540 dev->netdev_ops = &rocker_port_netdev_ops;
2541 dev->ethtool_ops = &rocker_port_ethtool_ops;
2542 dev->switchdev_ops = &rocker_port_switchdev_ops;
2543 netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
2545 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
2547 rocker_carrier_init(rocker_port);
2549 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG;
2551 err = rocker_world_port_pre_init(rocker_port);
2553 dev_err(&pdev->dev, "port world pre-init failed\n");
2554 goto err_world_port_pre_init;
2556 err = register_netdev(dev);
2558 dev_err(&pdev->dev, "register_netdev failed\n");
2559 goto err_register_netdev;
2561 rocker->ports[port_number] = rocker_port;
2563 err = rocker_world_port_init(rocker_port);
2565 dev_err(&pdev->dev, "port world init failed\n");
2566 goto err_world_port_init;
2571 err_world_port_init:
2572 rocker->ports[port_number] = NULL;
2573 unregister_netdev(dev);
2574 err_register_netdev:
2575 rocker_world_port_post_fini(rocker_port);
2576 err_world_port_pre_init:
2577 err_world_check_init:
2582 static int rocker_probe_ports(struct rocker *rocker)
2588 alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
2589 rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
2592 for (i = 0; i < rocker->port_count; i++) {
2593 err = rocker_probe_port(rocker, i);
2600 rocker_remove_ports(rocker);
2604 static int rocker_msix_init(struct rocker *rocker)
2606 struct pci_dev *pdev = rocker->pdev;
2611 msix_entries = pci_msix_vec_count(pdev);
2612 if (msix_entries < 0)
2613 return msix_entries;
2615 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
2618 rocker->msix_entries = kmalloc_array(msix_entries,
2619 sizeof(struct msix_entry),
2621 if (!rocker->msix_entries)
2624 for (i = 0; i < msix_entries; i++)
2625 rocker->msix_entries[i].entry = i;
2627 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
2629 goto err_enable_msix;
2634 kfree(rocker->msix_entries);
2638 static void rocker_msix_fini(const struct rocker *rocker)
2640 pci_disable_msix(rocker->pdev);
2641 kfree(rocker->msix_entries);
2644 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2646 struct rocker *rocker;
2649 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
2653 err = pci_enable_device(pdev);
2655 dev_err(&pdev->dev, "pci_enable_device failed\n");
2656 goto err_pci_enable_device;
2659 err = pci_request_regions(pdev, rocker_driver_name);
2661 dev_err(&pdev->dev, "pci_request_regions failed\n");
2662 goto err_pci_request_regions;
2665 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2667 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
2669 dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
2670 goto err_pci_set_dma_mask;
2673 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2675 dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
2676 goto err_pci_set_dma_mask;
2680 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
2681 dev_err(&pdev->dev, "invalid PCI region size\n");
2683 goto err_pci_resource_len_check;
2686 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
2687 pci_resource_len(pdev, 0));
2688 if (!rocker->hw_addr) {
2689 dev_err(&pdev->dev, "ioremap failed\n");
2693 pci_set_master(pdev);
2695 rocker->pdev = pdev;
2696 pci_set_drvdata(pdev, rocker);
2698 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
2700 err = rocker_msix_init(rocker);
2702 dev_err(&pdev->dev, "MSI-X init failed\n");
2706 err = rocker_basic_hw_test(rocker);
2708 dev_err(&pdev->dev, "basic hw test failed\n");
2709 goto err_basic_hw_test;
2712 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
2714 err = rocker_dma_rings_init(rocker);
2716 goto err_dma_rings_init;
2718 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
2719 rocker_cmd_irq_handler, 0,
2720 rocker_driver_name, rocker);
2722 dev_err(&pdev->dev, "cannot assign cmd irq\n");
2723 goto err_request_cmd_irq;
2726 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
2727 rocker_event_irq_handler, 0,
2728 rocker_driver_name, rocker);
2730 dev_err(&pdev->dev, "cannot assign event irq\n");
2731 goto err_request_event_irq;
2734 rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
2736 err = rocker_probe_ports(rocker);
2738 dev_err(&pdev->dev, "failed to probe ports\n");
2739 goto err_probe_ports;
2742 dev_info(&pdev->dev, "Rocker switch with id %*phN\n",
2743 (int)sizeof(rocker->hw.id), &rocker->hw.id);
2748 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
2749 err_request_event_irq:
2750 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
2751 err_request_cmd_irq:
2752 rocker_dma_rings_fini(rocker);
2755 rocker_msix_fini(rocker);
2757 iounmap(rocker->hw_addr);
2759 err_pci_resource_len_check:
2760 err_pci_set_dma_mask:
2761 pci_release_regions(pdev);
2762 err_pci_request_regions:
2763 pci_disable_device(pdev);
2764 err_pci_enable_device:
2769 static void rocker_remove(struct pci_dev *pdev)
2771 struct rocker *rocker = pci_get_drvdata(pdev);
2773 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
2774 rocker_remove_ports(rocker);
2775 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
2776 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
2777 rocker_dma_rings_fini(rocker);
2778 rocker_msix_fini(rocker);
2779 iounmap(rocker->hw_addr);
2780 pci_release_regions(rocker->pdev);
2781 pci_disable_device(rocker->pdev);
2785 static struct pci_driver rocker_pci_driver = {
2786 .name = rocker_driver_name,
2787 .id_table = rocker_pci_id_table,
2788 .probe = rocker_probe,
2789 .remove = rocker_remove,
2792 /************************************
2793 * Net device notifier event handler
2794 ************************************/
2796 static bool rocker_port_dev_check(const struct net_device *dev)
2798 return dev->netdev_ops == &rocker_port_netdev_ops;
2801 static int rocker_netdevice_event(struct notifier_block *unused,
2802 unsigned long event, void *ptr)
2804 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2805 struct netdev_notifier_changeupper_info *info;
2806 struct rocker_port *rocker_port;
2809 if (!rocker_port_dev_check(dev))
2813 case NETDEV_CHANGEUPPER:
2817 rocker_port = netdev_priv(dev);
2818 if (info->linking) {
2819 err = rocker_world_port_master_linked(rocker_port,
2822 netdev_warn(dev, "failed to reflect master linked (err %d)\n",
2825 err = rocker_world_port_master_unlinked(rocker_port,
2828 netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
2836 static struct notifier_block rocker_netdevice_nb __read_mostly = {
2837 .notifier_call = rocker_netdevice_event,
2840 /************************************
2841 * Net event notifier event handler
2842 ************************************/
2844 static int rocker_netevent_event(struct notifier_block *unused,
2845 unsigned long event, void *ptr)
2847 struct rocker_port *rocker_port;
2848 struct net_device *dev;
2849 struct neighbour *n = ptr;
2853 case NETEVENT_NEIGH_UPDATE:
2854 if (n->tbl != &arp_tbl)
2857 if (!rocker_port_dev_check(dev))
2859 rocker_port = netdev_priv(dev);
2860 err = rocker_world_port_neigh_update(rocker_port, n);
2862 netdev_warn(dev, "failed to handle neigh update (err %d)\n",
2870 static struct notifier_block rocker_netevent_nb __read_mostly = {
2871 .notifier_call = rocker_netevent_event,
2874 /***********************
2875 * Module init and exit
2876 ***********************/
2878 static int __init rocker_module_init(void)
2882 register_netdevice_notifier(&rocker_netdevice_nb);
2883 register_netevent_notifier(&rocker_netevent_nb);
2884 err = pci_register_driver(&rocker_pci_driver);
2886 goto err_pci_register_driver;
2889 err_pci_register_driver:
2890 unregister_netevent_notifier(&rocker_netevent_nb);
2891 unregister_netdevice_notifier(&rocker_netdevice_nb);
2895 static void __exit rocker_module_exit(void)
2897 unregister_netevent_notifier(&rocker_netevent_nb);
2898 unregister_netdevice_notifier(&rocker_netdevice_nb);
2899 pci_unregister_driver(&rocker_pci_driver);
2902 module_init(rocker_module_init);
2903 module_exit(rocker_module_exit);
2905 MODULE_LICENSE("GPL v2");
2906 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
2907 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
2908 MODULE_DESCRIPTION("Rocker switch device driver");
2909 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);