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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[deliverable/linux.git] / drivers / infiniband / hw / nes / nes_nic.c
1 /*
2 * Copyright (c) 2006 - 2011 Intel Corporation. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 */
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/ip.h>
39 #include <linux/tcp.h>
40 #include <linux/if_arp.h>
41 #include <linux/if_vlan.h>
42 #include <linux/ethtool.h>
43 #include <linux/slab.h>
44 #include <net/tcp.h>
45
46 #include <net/inet_common.h>
47 #include <linux/inet.h>
48
49 #include "nes.h"
50
51 static struct nic_qp_map nic_qp_mapping_0[] = {
52 {16,0,0,1},{24,4,0,0},{28,8,0,0},{32,12,0,0},
53 {20,2,2,1},{26,6,2,0},{30,10,2,0},{34,14,2,0},
54 {18,1,1,1},{25,5,1,0},{29,9,1,0},{33,13,1,0},
55 {22,3,3,1},{27,7,3,0},{31,11,3,0},{35,15,3,0}
56 };
57
58 static struct nic_qp_map nic_qp_mapping_1[] = {
59 {18,1,1,1},{25,5,1,0},{29,9,1,0},{33,13,1,0},
60 {22,3,3,1},{27,7,3,0},{31,11,3,0},{35,15,3,0}
61 };
62
63 static struct nic_qp_map nic_qp_mapping_2[] = {
64 {20,2,2,1},{26,6,2,0},{30,10,2,0},{34,14,2,0}
65 };
66
67 static struct nic_qp_map nic_qp_mapping_3[] = {
68 {22,3,3,1},{27,7,3,0},{31,11,3,0},{35,15,3,0}
69 };
70
71 static struct nic_qp_map nic_qp_mapping_4[] = {
72 {28,8,0,0},{32,12,0,0}
73 };
74
75 static struct nic_qp_map nic_qp_mapping_5[] = {
76 {29,9,1,0},{33,13,1,0}
77 };
78
79 static struct nic_qp_map nic_qp_mapping_6[] = {
80 {30,10,2,0},{34,14,2,0}
81 };
82
83 static struct nic_qp_map nic_qp_mapping_7[] = {
84 {31,11,3,0},{35,15,3,0}
85 };
86
87 static struct nic_qp_map *nic_qp_mapping_per_function[] = {
88 nic_qp_mapping_0, nic_qp_mapping_1, nic_qp_mapping_2, nic_qp_mapping_3,
89 nic_qp_mapping_4, nic_qp_mapping_5, nic_qp_mapping_6, nic_qp_mapping_7
90 };
91
92 static const u32 default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
93 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
94 static int debug = -1;
95 static int nics_per_function = 1;
96
97 /**
98 * nes_netdev_poll
99 */
100 static int nes_netdev_poll(struct napi_struct *napi, int budget)
101 {
102 struct nes_vnic *nesvnic = container_of(napi, struct nes_vnic, napi);
103 struct nes_device *nesdev = nesvnic->nesdev;
104 struct nes_hw_nic_cq *nescq = &nesvnic->nic_cq;
105
106 nesvnic->budget = budget;
107 nescq->cqes_pending = 0;
108 nescq->rx_cqes_completed = 0;
109 nescq->cqe_allocs_pending = 0;
110 nescq->rx_pkts_indicated = 0;
111
112 nes_nic_ce_handler(nesdev, nescq);
113
114 if (nescq->cqes_pending == 0) {
115 napi_complete(napi);
116 /* clear out completed cqes and arm */
117 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
118 nescq->cq_number | (nescq->cqe_allocs_pending << 16));
119 nes_read32(nesdev->regs+NES_CQE_ALLOC);
120 } else {
121 /* clear out completed cqes but don't arm */
122 nes_write32(nesdev->regs+NES_CQE_ALLOC,
123 nescq->cq_number | (nescq->cqe_allocs_pending << 16));
124 nes_debug(NES_DBG_NETDEV, "%s: exiting with work pending\n",
125 nesvnic->netdev->name);
126 }
127 return nescq->rx_pkts_indicated;
128 }
129
130
131 /**
132 * nes_netdev_open - Activate the network interface; ifconfig
133 * ethx up.
134 */
135 static int nes_netdev_open(struct net_device *netdev)
136 {
137 u32 macaddr_low;
138 u16 macaddr_high;
139 struct nes_vnic *nesvnic = netdev_priv(netdev);
140 struct nes_device *nesdev = nesvnic->nesdev;
141 int ret;
142 int i;
143 struct nes_vnic *first_nesvnic = NULL;
144 u32 nic_active_bit;
145 u32 nic_active;
146 struct list_head *list_pos, *list_temp;
147 unsigned long flags;
148
149 assert(nesdev != NULL);
150
151 if (nesvnic->netdev_open == 1)
152 return 0;
153
154 if (netif_msg_ifup(nesvnic))
155 printk(KERN_INFO PFX "%s: enabling interface\n", netdev->name);
156
157 ret = nes_init_nic_qp(nesdev, netdev);
158 if (ret) {
159 return ret;
160 }
161
162 netif_carrier_off(netdev);
163 netif_stop_queue(netdev);
164
165 if ((!nesvnic->of_device_registered) && (nesvnic->rdma_enabled)) {
166 nesvnic->nesibdev = nes_init_ofa_device(netdev);
167 if (nesvnic->nesibdev == NULL) {
168 printk(KERN_ERR PFX "%s: nesvnic->nesibdev alloc failed", netdev->name);
169 } else {
170 nesvnic->nesibdev->nesvnic = nesvnic;
171 ret = nes_register_ofa_device(nesvnic->nesibdev);
172 if (ret) {
173 printk(KERN_ERR PFX "%s: Unable to register RDMA device, ret = %d\n",
174 netdev->name, ret);
175 }
176 }
177 }
178 /* Set packet filters */
179 nic_active_bit = 1 << nesvnic->nic_index;
180 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_ACTIVE);
181 nic_active |= nic_active_bit;
182 nes_write_indexed(nesdev, NES_IDX_NIC_ACTIVE, nic_active);
183 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ENABLE);
184 nic_active |= nic_active_bit;
185 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ENABLE, nic_active);
186 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_BROADCAST_ON);
187 nic_active |= nic_active_bit;
188 nes_write_indexed(nesdev, NES_IDX_NIC_BROADCAST_ON, nic_active);
189
190 macaddr_high = ((u16)netdev->dev_addr[0]) << 8;
191 macaddr_high += (u16)netdev->dev_addr[1];
192
193 macaddr_low = ((u32)netdev->dev_addr[2]) << 24;
194 macaddr_low += ((u32)netdev->dev_addr[3]) << 16;
195 macaddr_low += ((u32)netdev->dev_addr[4]) << 8;
196 macaddr_low += (u32)netdev->dev_addr[5];
197
198 /* Program the various MAC regs */
199 for (i = 0; i < NES_MAX_PORT_COUNT; i++) {
200 if (nesvnic->qp_nic_index[i] == 0xf) {
201 break;
202 }
203 nes_debug(NES_DBG_NETDEV, "i=%d, perfect filter table index= %d, PERF FILTER LOW"
204 " (Addr:%08X) = %08X, HIGH = %08X.\n",
205 i, nesvnic->qp_nic_index[i],
206 NES_IDX_PERFECT_FILTER_LOW+
207 (nesvnic->qp_nic_index[i] * 8),
208 macaddr_low,
209 (u32)macaddr_high | NES_MAC_ADDR_VALID |
210 ((((u32)nesvnic->nic_index) << 16)));
211 nes_write_indexed(nesdev,
212 NES_IDX_PERFECT_FILTER_LOW + (nesvnic->qp_nic_index[i] * 8),
213 macaddr_low);
214 nes_write_indexed(nesdev,
215 NES_IDX_PERFECT_FILTER_HIGH + (nesvnic->qp_nic_index[i] * 8),
216 (u32)macaddr_high | NES_MAC_ADDR_VALID |
217 ((((u32)nesvnic->nic_index) << 16)));
218 }
219
220
221 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
222 nesvnic->nic_cq.cq_number);
223 nes_read32(nesdev->regs+NES_CQE_ALLOC);
224 list_for_each_safe(list_pos, list_temp, &nesdev->nesadapter->nesvnic_list[nesdev->mac_index]) {
225 first_nesvnic = container_of(list_pos, struct nes_vnic, list);
226 if (first_nesvnic->netdev_open == 1)
227 break;
228 }
229 if (first_nesvnic->netdev_open == 0) {
230 nes_debug(NES_DBG_INIT, "Setting up MAC interrupt mask.\n");
231 nes_write_indexed(nesdev, NES_IDX_MAC_INT_MASK + (0x200 * nesdev->mac_index),
232 ~(NES_MAC_INT_LINK_STAT_CHG | NES_MAC_INT_XGMII_EXT |
233 NES_MAC_INT_TX_UNDERFLOW | NES_MAC_INT_TX_ERROR));
234 first_nesvnic = nesvnic;
235 }
236
237 if (first_nesvnic->linkup) {
238 /* Enable network packets */
239 nesvnic->linkup = 1;
240 netif_start_queue(netdev);
241 netif_carrier_on(netdev);
242 }
243
244 spin_lock_irqsave(&nesdev->nesadapter->phy_lock, flags);
245 if (nesdev->nesadapter->phy_type[nesdev->mac_index] == NES_PHY_TYPE_SFP_D) {
246 nesdev->link_recheck = 1;
247 mod_delayed_work(system_wq, &nesdev->work,
248 NES_LINK_RECHECK_DELAY);
249 }
250 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
251
252 spin_lock_irqsave(&nesvnic->port_ibevent_lock, flags);
253 if (nesvnic->of_device_registered) {
254 nesdev->nesadapter->send_term_ok = 1;
255 if (nesvnic->linkup == 1) {
256 if (nesdev->iw_status == 0) {
257 nesdev->iw_status = 1;
258 nes_port_ibevent(nesvnic);
259 }
260 } else {
261 nesdev->iw_status = 0;
262 }
263 }
264 spin_unlock_irqrestore(&nesvnic->port_ibevent_lock, flags);
265
266 napi_enable(&nesvnic->napi);
267 nesvnic->netdev_open = 1;
268
269 return 0;
270 }
271
272
273 /**
274 * nes_netdev_stop
275 */
276 static int nes_netdev_stop(struct net_device *netdev)
277 {
278 struct nes_vnic *nesvnic = netdev_priv(netdev);
279 struct nes_device *nesdev = nesvnic->nesdev;
280 u32 nic_active_mask;
281 u32 nic_active;
282 struct nes_vnic *first_nesvnic = NULL;
283 struct list_head *list_pos, *list_temp;
284 unsigned long flags;
285
286 nes_debug(NES_DBG_SHUTDOWN, "nesvnic=%p, nesdev=%p, netdev=%p %s\n",
287 nesvnic, nesdev, netdev, netdev->name);
288 if (nesvnic->netdev_open == 0)
289 return 0;
290
291 if (netif_msg_ifdown(nesvnic))
292 printk(KERN_INFO PFX "%s: disabling interface\n", netdev->name);
293 netif_carrier_off(netdev);
294
295 /* Disable network packets */
296 napi_disable(&nesvnic->napi);
297 netif_stop_queue(netdev);
298 list_for_each_safe(list_pos, list_temp, &nesdev->nesadapter->nesvnic_list[nesdev->mac_index]) {
299 first_nesvnic = container_of(list_pos, struct nes_vnic, list);
300 if ((first_nesvnic->netdev_open == 1) && (first_nesvnic != nesvnic))
301 break;
302 }
303
304 if ((first_nesvnic->netdev_open == 1) && (first_nesvnic != nesvnic) &&
305 (PCI_FUNC(first_nesvnic->nesdev->pcidev->devfn) !=
306 PCI_FUNC(nesvnic->nesdev->pcidev->devfn))) {
307 nes_write_indexed(nesdev, NES_IDX_MAC_INT_MASK+
308 (0x200*nesdev->mac_index), 0xffffffff);
309 nes_write_indexed(first_nesvnic->nesdev,
310 NES_IDX_MAC_INT_MASK+
311 (0x200*first_nesvnic->nesdev->mac_index),
312 ~(NES_MAC_INT_LINK_STAT_CHG | NES_MAC_INT_XGMII_EXT |
313 NES_MAC_INT_TX_UNDERFLOW | NES_MAC_INT_TX_ERROR));
314 } else {
315 nes_write_indexed(nesdev, NES_IDX_MAC_INT_MASK+(0x200*nesdev->mac_index), 0xffffffff);
316 }
317
318 nic_active_mask = ~((u32)(1 << nesvnic->nic_index));
319 nes_write_indexed(nesdev, NES_IDX_PERFECT_FILTER_HIGH+
320 (nesvnic->perfect_filter_index*8), 0);
321 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_ACTIVE);
322 nic_active &= nic_active_mask;
323 nes_write_indexed(nesdev, NES_IDX_NIC_ACTIVE, nic_active);
324 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL);
325 nic_active &= nic_active_mask;
326 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL, nic_active);
327 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ENABLE);
328 nic_active &= nic_active_mask;
329 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ENABLE, nic_active);
330 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
331 nic_active &= nic_active_mask;
332 nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
333 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_BROADCAST_ON);
334 nic_active &= nic_active_mask;
335 nes_write_indexed(nesdev, NES_IDX_NIC_BROADCAST_ON, nic_active);
336
337 spin_lock_irqsave(&nesvnic->port_ibevent_lock, flags);
338 if (nesvnic->of_device_registered) {
339 nesdev->nesadapter->send_term_ok = 0;
340 nesdev->iw_status = 0;
341 if (nesvnic->linkup == 1)
342 nes_port_ibevent(nesvnic);
343 }
344 del_timer_sync(&nesvnic->event_timer);
345 nesvnic->event_timer.function = NULL;
346 spin_unlock_irqrestore(&nesvnic->port_ibevent_lock, flags);
347
348 nes_destroy_nic_qp(nesvnic);
349
350 nesvnic->netdev_open = 0;
351
352 return 0;
353 }
354
355
356 /**
357 * nes_nic_send
358 */
359 static int nes_nic_send(struct sk_buff *skb, struct net_device *netdev)
360 {
361 struct nes_vnic *nesvnic = netdev_priv(netdev);
362 struct nes_device *nesdev = nesvnic->nesdev;
363 struct nes_hw_nic *nesnic = &nesvnic->nic;
364 struct nes_hw_nic_sq_wqe *nic_sqe;
365 struct tcphdr *tcph;
366 __le16 *wqe_fragment_length;
367 u32 wqe_misc;
368 u16 wqe_fragment_index = 1; /* first fragment (0) is used by copy buffer */
369 u16 skb_fragment_index;
370 dma_addr_t bus_address;
371
372 nic_sqe = &nesnic->sq_vbase[nesnic->sq_head];
373 wqe_fragment_length = (__le16 *)&nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX];
374
375 /* setup the VLAN tag if present */
376 if (skb_vlan_tag_present(skb)) {
377 nes_debug(NES_DBG_NIC_TX, "%s: VLAN packet to send... VLAN = %08X\n",
378 netdev->name, skb_vlan_tag_get(skb));
379 wqe_misc = NES_NIC_SQ_WQE_TAGVALUE_ENABLE;
380 wqe_fragment_length[0] = (__force __le16) skb_vlan_tag_get(skb);
381 } else
382 wqe_misc = 0;
383
384 /* bump past the vlan tag */
385 wqe_fragment_length++;
386 /* wqe_fragment_address = (u64 *)&nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX]; */
387 wqe_misc |= NES_NIC_SQ_WQE_COMPLETION;
388
389 if (skb->ip_summed == CHECKSUM_PARTIAL) {
390 if (skb_is_gso(skb)) {
391 tcph = tcp_hdr(skb);
392 /* nes_debug(NES_DBG_NIC_TX, "%s: TSO request... is_gso = %u seg size = %u\n",
393 netdev->name, skb_is_gso(skb), skb_shinfo(skb)->gso_size); */
394 wqe_misc |= NES_NIC_SQ_WQE_LSO_ENABLE | (u16)skb_shinfo(skb)->gso_size;
395 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_LSO_INFO_IDX,
396 ((u32)tcph->doff) |
397 (((u32)(((unsigned char *)tcph) - skb->data)) << 4));
398 }
399 } else { /* CHECKSUM_HW */
400 wqe_misc |= NES_NIC_SQ_WQE_DISABLE_CHKSUM;
401 }
402
403 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_TOTAL_LENGTH_IDX,
404 skb->len);
405 memcpy(&nesnic->first_frag_vbase[nesnic->sq_head].buffer,
406 skb->data, min(((unsigned int)NES_FIRST_FRAG_SIZE), skb_headlen(skb)));
407 wqe_fragment_length[0] = cpu_to_le16(min(((unsigned int)NES_FIRST_FRAG_SIZE),
408 skb_headlen(skb)));
409 wqe_fragment_length[1] = 0;
410 if (skb_headlen(skb) > NES_FIRST_FRAG_SIZE) {
411 if ((skb_shinfo(skb)->nr_frags + 1) > 4) {
412 nes_debug(NES_DBG_NIC_TX, "%s: Packet with %u fragments not sent, skb_headlen=%u\n",
413 netdev->name, skb_shinfo(skb)->nr_frags + 2, skb_headlen(skb));
414 kfree_skb(skb);
415 nesvnic->tx_sw_dropped++;
416 return NETDEV_TX_LOCKED;
417 }
418 set_bit(nesnic->sq_head, nesnic->first_frag_overflow);
419 bus_address = pci_map_single(nesdev->pcidev, skb->data + NES_FIRST_FRAG_SIZE,
420 skb_headlen(skb) - NES_FIRST_FRAG_SIZE, PCI_DMA_TODEVICE);
421 wqe_fragment_length[wqe_fragment_index++] =
422 cpu_to_le16(skb_headlen(skb) - NES_FIRST_FRAG_SIZE);
423 wqe_fragment_length[wqe_fragment_index] = 0;
424 set_wqe_64bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_FRAG1_LOW_IDX,
425 ((u64)(bus_address)));
426 nesnic->tx_skb[nesnic->sq_head] = skb;
427 }
428
429 if (skb_headlen(skb) == skb->len) {
430 if (skb_headlen(skb) <= NES_FIRST_FRAG_SIZE) {
431 nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_2_1_IDX] = 0;
432 nesnic->tx_skb[nesnic->sq_head] = skb;
433 }
434 } else {
435 /* Deal with Fragments */
436 nesnic->tx_skb[nesnic->sq_head] = skb;
437 for (skb_fragment_index = 0; skb_fragment_index < skb_shinfo(skb)->nr_frags;
438 skb_fragment_index++) {
439 skb_frag_t *frag =
440 &skb_shinfo(skb)->frags[skb_fragment_index];
441 bus_address = skb_frag_dma_map(&nesdev->pcidev->dev,
442 frag, 0, skb_frag_size(frag),
443 DMA_TO_DEVICE);
444 wqe_fragment_length[wqe_fragment_index] =
445 cpu_to_le16(skb_frag_size(&skb_shinfo(skb)->frags[skb_fragment_index]));
446 set_wqe_64bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_FRAG0_LOW_IDX+(2*wqe_fragment_index),
447 bus_address);
448 wqe_fragment_index++;
449 if (wqe_fragment_index < 5)
450 wqe_fragment_length[wqe_fragment_index] = 0;
451 }
452 }
453
454 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_MISC_IDX, wqe_misc);
455 nesnic->sq_head++;
456 nesnic->sq_head &= nesnic->sq_size - 1;
457
458 return NETDEV_TX_OK;
459 }
460
461
462 /**
463 * nes_netdev_start_xmit
464 */
465 static int nes_netdev_start_xmit(struct sk_buff *skb, struct net_device *netdev)
466 {
467 struct nes_vnic *nesvnic = netdev_priv(netdev);
468 struct nes_device *nesdev = nesvnic->nesdev;
469 struct nes_hw_nic *nesnic = &nesvnic->nic;
470 struct nes_hw_nic_sq_wqe *nic_sqe;
471 struct tcphdr *tcph;
472 /* struct udphdr *udph; */
473 #define NES_MAX_TSO_FRAGS MAX_SKB_FRAGS
474 /* 64K segment plus overflow on each side */
475 dma_addr_t tso_bus_address[NES_MAX_TSO_FRAGS];
476 dma_addr_t bus_address;
477 u32 tso_frag_index;
478 u32 tso_frag_count;
479 u32 tso_wqe_length;
480 u32 curr_tcp_seq;
481 u32 wqe_count=1;
482 u32 send_rc;
483 struct iphdr *iph;
484 __le16 *wqe_fragment_length;
485 u32 nr_frags;
486 u32 original_first_length;
487 /* u64 *wqe_fragment_address; */
488 /* first fragment (0) is used by copy buffer */
489 u16 wqe_fragment_index=1;
490 u16 hoffset;
491 u16 nhoffset;
492 u16 wqes_needed;
493 u16 wqes_available;
494 u32 wqe_misc;
495
496 /*
497 * nes_debug(NES_DBG_NIC_TX, "%s Request to tx NIC packet length %u, headlen %u,"
498 * " (%u frags), tso_size=%u\n",
499 * netdev->name, skb->len, skb_headlen(skb),
500 * skb_shinfo(skb)->nr_frags, skb_is_gso(skb));
501 */
502
503 if (netif_queue_stopped(netdev))
504 return NETDEV_TX_BUSY;
505
506 /* Check if SQ is full */
507 if ((((nesnic->sq_tail+(nesnic->sq_size*2))-nesnic->sq_head) & (nesnic->sq_size - 1)) == 1) {
508 if (!netif_queue_stopped(netdev)) {
509 netif_stop_queue(netdev);
510 barrier();
511 if ((((((volatile u16)nesnic->sq_tail)+(nesnic->sq_size*2))-nesnic->sq_head) & (nesnic->sq_size - 1)) != 1) {
512 netif_start_queue(netdev);
513 goto sq_no_longer_full;
514 }
515 }
516 nesvnic->sq_full++;
517 return NETDEV_TX_BUSY;
518 }
519
520 sq_no_longer_full:
521 nr_frags = skb_shinfo(skb)->nr_frags;
522 if (skb_headlen(skb) > NES_FIRST_FRAG_SIZE) {
523 nr_frags++;
524 }
525 /* Check if too many fragments */
526 if (unlikely((nr_frags > 4))) {
527 if (skb_is_gso(skb)) {
528 nesvnic->segmented_tso_requests++;
529 nesvnic->tso_requests++;
530 /* Basically 4 fragments available per WQE with extended fragments */
531 wqes_needed = nr_frags >> 2;
532 wqes_needed += (nr_frags&3)?1:0;
533 wqes_available = (((nesnic->sq_tail+nesnic->sq_size)-nesnic->sq_head) - 1) &
534 (nesnic->sq_size - 1);
535
536 if (unlikely(wqes_needed > wqes_available)) {
537 if (!netif_queue_stopped(netdev)) {
538 netif_stop_queue(netdev);
539 barrier();
540 wqes_available = (((((volatile u16)nesnic->sq_tail)+nesnic->sq_size)-nesnic->sq_head) - 1) &
541 (nesnic->sq_size - 1);
542 if (wqes_needed <= wqes_available) {
543 netif_start_queue(netdev);
544 goto tso_sq_no_longer_full;
545 }
546 }
547 nesvnic->sq_full++;
548 nes_debug(NES_DBG_NIC_TX, "%s: HNIC SQ full- TSO request has too many frags!\n",
549 netdev->name);
550 return NETDEV_TX_BUSY;
551 }
552 tso_sq_no_longer_full:
553 /* Map all the buffers */
554 for (tso_frag_count=0; tso_frag_count < skb_shinfo(skb)->nr_frags;
555 tso_frag_count++) {
556 skb_frag_t *frag =
557 &skb_shinfo(skb)->frags[tso_frag_count];
558 tso_bus_address[tso_frag_count] =
559 skb_frag_dma_map(&nesdev->pcidev->dev,
560 frag, 0, skb_frag_size(frag),
561 DMA_TO_DEVICE);
562 }
563
564 tso_frag_index = 0;
565 curr_tcp_seq = ntohl(tcp_hdr(skb)->seq);
566 hoffset = skb_transport_header(skb) - skb->data;
567 nhoffset = skb_network_header(skb) - skb->data;
568 original_first_length = hoffset + ((((struct tcphdr *)skb_transport_header(skb))->doff)<<2);
569
570 for (wqe_count=0; wqe_count<((u32)wqes_needed); wqe_count++) {
571 tso_wqe_length = 0;
572 nic_sqe = &nesnic->sq_vbase[nesnic->sq_head];
573 wqe_fragment_length =
574 (__le16 *)&nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX];
575 /* setup the VLAN tag if present */
576 if (skb_vlan_tag_present(skb)) {
577 nes_debug(NES_DBG_NIC_TX, "%s: VLAN packet to send... VLAN = %08X\n",
578 netdev->name,
579 skb_vlan_tag_get(skb));
580 wqe_misc = NES_NIC_SQ_WQE_TAGVALUE_ENABLE;
581 wqe_fragment_length[0] = (__force __le16) skb_vlan_tag_get(skb);
582 } else
583 wqe_misc = 0;
584
585 /* bump past the vlan tag */
586 wqe_fragment_length++;
587
588 /* Assumes header totally fits in allocated buffer and is in first fragment */
589 if (original_first_length > NES_FIRST_FRAG_SIZE) {
590 nes_debug(NES_DBG_NIC_TX, "ERROR: SKB header too big, headlen=%u, FIRST_FRAG_SIZE=%u\n",
591 original_first_length, NES_FIRST_FRAG_SIZE);
592 nes_debug(NES_DBG_NIC_TX, "%s Request to tx NIC packet length %u, headlen %u,"
593 " (%u frags), is_gso = %u tso_size=%u\n",
594 netdev->name,
595 skb->len, skb_headlen(skb),
596 skb_shinfo(skb)->nr_frags, skb_is_gso(skb), skb_shinfo(skb)->gso_size);
597 }
598 memcpy(&nesnic->first_frag_vbase[nesnic->sq_head].buffer,
599 skb->data, min(((unsigned int)NES_FIRST_FRAG_SIZE),
600 original_first_length));
601 iph = (struct iphdr *)
602 (&nesnic->first_frag_vbase[nesnic->sq_head].buffer[nhoffset]);
603 tcph = (struct tcphdr *)
604 (&nesnic->first_frag_vbase[nesnic->sq_head].buffer[hoffset]);
605 if ((wqe_count+1)!=(u32)wqes_needed) {
606 tcph->fin = 0;
607 tcph->psh = 0;
608 tcph->rst = 0;
609 tcph->urg = 0;
610 }
611 if (wqe_count) {
612 tcph->syn = 0;
613 }
614 tcph->seq = htonl(curr_tcp_seq);
615 wqe_fragment_length[0] = cpu_to_le16(min(((unsigned int)NES_FIRST_FRAG_SIZE),
616 original_first_length));
617
618 wqe_fragment_index = 1;
619 if ((wqe_count==0) && (skb_headlen(skb) > original_first_length)) {
620 set_bit(nesnic->sq_head, nesnic->first_frag_overflow);
621 bus_address = pci_map_single(nesdev->pcidev, skb->data + original_first_length,
622 skb_headlen(skb) - original_first_length, PCI_DMA_TODEVICE);
623 wqe_fragment_length[wqe_fragment_index++] =
624 cpu_to_le16(skb_headlen(skb) - original_first_length);
625 wqe_fragment_length[wqe_fragment_index] = 0;
626 set_wqe_64bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_FRAG1_LOW_IDX,
627 bus_address);
628 tso_wqe_length += skb_headlen(skb) -
629 original_first_length;
630 }
631 while (wqe_fragment_index < 5) {
632 wqe_fragment_length[wqe_fragment_index] =
633 cpu_to_le16(skb_frag_size(&skb_shinfo(skb)->frags[tso_frag_index]));
634 set_wqe_64bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_FRAG0_LOW_IDX+(2*wqe_fragment_index),
635 (u64)tso_bus_address[tso_frag_index]);
636 wqe_fragment_index++;
637 tso_wqe_length += skb_frag_size(&skb_shinfo(skb)->frags[tso_frag_index++]);
638 if (wqe_fragment_index < 5)
639 wqe_fragment_length[wqe_fragment_index] = 0;
640 if (tso_frag_index == tso_frag_count)
641 break;
642 }
643 if ((wqe_count+1) == (u32)wqes_needed) {
644 nesnic->tx_skb[nesnic->sq_head] = skb;
645 } else {
646 nesnic->tx_skb[nesnic->sq_head] = NULL;
647 }
648 wqe_misc |= NES_NIC_SQ_WQE_COMPLETION | (u16)skb_shinfo(skb)->gso_size;
649 if ((tso_wqe_length + original_first_length) > skb_shinfo(skb)->gso_size) {
650 wqe_misc |= NES_NIC_SQ_WQE_LSO_ENABLE;
651 } else {
652 iph->tot_len = htons(tso_wqe_length + original_first_length - nhoffset);
653 }
654
655 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_MISC_IDX,
656 wqe_misc);
657 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_LSO_INFO_IDX,
658 ((u32)tcph->doff) | (((u32)hoffset) << 4));
659
660 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_TOTAL_LENGTH_IDX,
661 tso_wqe_length + original_first_length);
662 curr_tcp_seq += tso_wqe_length;
663 nesnic->sq_head++;
664 nesnic->sq_head &= nesnic->sq_size-1;
665 }
666 } else {
667 nesvnic->linearized_skbs++;
668 hoffset = skb_transport_header(skb) - skb->data;
669 nhoffset = skb_network_header(skb) - skb->data;
670 skb_linearize(skb);
671 skb_set_transport_header(skb, hoffset);
672 skb_set_network_header(skb, nhoffset);
673 send_rc = nes_nic_send(skb, netdev);
674 if (send_rc != NETDEV_TX_OK)
675 return NETDEV_TX_OK;
676 }
677 } else {
678 send_rc = nes_nic_send(skb, netdev);
679 if (send_rc != NETDEV_TX_OK)
680 return NETDEV_TX_OK;
681 }
682
683 barrier();
684
685 if (wqe_count)
686 nes_write32(nesdev->regs+NES_WQE_ALLOC,
687 (wqe_count << 24) | (1 << 23) | nesvnic->nic.qp_id);
688
689 netdev->trans_start = jiffies;
690
691 return NETDEV_TX_OK;
692 }
693
694
695 /**
696 * nes_netdev_get_stats
697 */
698 static struct net_device_stats *nes_netdev_get_stats(struct net_device *netdev)
699 {
700 struct nes_vnic *nesvnic = netdev_priv(netdev);
701 struct nes_device *nesdev = nesvnic->nesdev;
702 u64 u64temp;
703 u32 u32temp;
704
705 u32temp = nes_read_indexed(nesdev,
706 NES_IDX_ENDNODE0_NSTAT_RX_DISCARD + (nesvnic->nic_index*0x200));
707 nesvnic->netstats.rx_dropped += u32temp;
708 nesvnic->endnode_nstat_rx_discard += u32temp;
709
710 u64temp = (u64)nes_read_indexed(nesdev,
711 NES_IDX_ENDNODE0_NSTAT_RX_OCTETS_LO + (nesvnic->nic_index*0x200));
712 u64temp += ((u64)nes_read_indexed(nesdev,
713 NES_IDX_ENDNODE0_NSTAT_RX_OCTETS_HI + (nesvnic->nic_index*0x200))) << 32;
714
715 nesvnic->endnode_nstat_rx_octets += u64temp;
716 nesvnic->netstats.rx_bytes += u64temp;
717
718 u64temp = (u64)nes_read_indexed(nesdev,
719 NES_IDX_ENDNODE0_NSTAT_RX_FRAMES_LO + (nesvnic->nic_index*0x200));
720 u64temp += ((u64)nes_read_indexed(nesdev,
721 NES_IDX_ENDNODE0_NSTAT_RX_FRAMES_HI + (nesvnic->nic_index*0x200))) << 32;
722
723 nesvnic->endnode_nstat_rx_frames += u64temp;
724 nesvnic->netstats.rx_packets += u64temp;
725
726 u64temp = (u64)nes_read_indexed(nesdev,
727 NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_LO + (nesvnic->nic_index*0x200));
728 u64temp += ((u64)nes_read_indexed(nesdev,
729 NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_HI + (nesvnic->nic_index*0x200))) << 32;
730
731 nesvnic->endnode_nstat_tx_octets += u64temp;
732 nesvnic->netstats.tx_bytes += u64temp;
733
734 u64temp = (u64)nes_read_indexed(nesdev,
735 NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_LO + (nesvnic->nic_index*0x200));
736 u64temp += ((u64)nes_read_indexed(nesdev,
737 NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_HI + (nesvnic->nic_index*0x200))) << 32;
738
739 nesvnic->endnode_nstat_tx_frames += u64temp;
740 nesvnic->netstats.tx_packets += u64temp;
741
742 u32temp = nes_read_indexed(nesdev,
743 NES_IDX_MAC_RX_SHORT_FRAMES + (nesvnic->nesdev->mac_index*0x200));
744 nesvnic->netstats.rx_dropped += u32temp;
745 nesvnic->nesdev->mac_rx_errors += u32temp;
746 nesvnic->nesdev->mac_rx_short_frames += u32temp;
747
748 u32temp = nes_read_indexed(nesdev,
749 NES_IDX_MAC_RX_OVERSIZED_FRAMES + (nesvnic->nesdev->mac_index*0x200));
750 nesvnic->netstats.rx_dropped += u32temp;
751 nesvnic->nesdev->mac_rx_errors += u32temp;
752 nesvnic->nesdev->mac_rx_oversized_frames += u32temp;
753
754 u32temp = nes_read_indexed(nesdev,
755 NES_IDX_MAC_RX_JABBER_FRAMES + (nesvnic->nesdev->mac_index*0x200));
756 nesvnic->netstats.rx_dropped += u32temp;
757 nesvnic->nesdev->mac_rx_errors += u32temp;
758 nesvnic->nesdev->mac_rx_jabber_frames += u32temp;
759
760 u32temp = nes_read_indexed(nesdev,
761 NES_IDX_MAC_RX_SYMBOL_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
762 nesvnic->netstats.rx_dropped += u32temp;
763 nesvnic->nesdev->mac_rx_errors += u32temp;
764 nesvnic->nesdev->mac_rx_symbol_err_frames += u32temp;
765
766 u32temp = nes_read_indexed(nesdev,
767 NES_IDX_MAC_RX_LENGTH_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
768 nesvnic->netstats.rx_length_errors += u32temp;
769 nesvnic->nesdev->mac_rx_errors += u32temp;
770
771 u32temp = nes_read_indexed(nesdev,
772 NES_IDX_MAC_RX_CRC_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
773 nesvnic->nesdev->mac_rx_errors += u32temp;
774 nesvnic->nesdev->mac_rx_crc_errors += u32temp;
775 nesvnic->netstats.rx_crc_errors += u32temp;
776
777 u32temp = nes_read_indexed(nesdev,
778 NES_IDX_MAC_TX_ERRORS + (nesvnic->nesdev->mac_index*0x200));
779 nesvnic->nesdev->mac_tx_errors += u32temp;
780 nesvnic->netstats.tx_errors += u32temp;
781
782 return &nesvnic->netstats;
783 }
784
785
786 /**
787 * nes_netdev_tx_timeout
788 */
789 static void nes_netdev_tx_timeout(struct net_device *netdev)
790 {
791 struct nes_vnic *nesvnic = netdev_priv(netdev);
792
793 if (netif_msg_timer(nesvnic))
794 nes_debug(NES_DBG_NIC_TX, "%s: tx timeout\n", netdev->name);
795 }
796
797
798 /**
799 * nes_netdev_set_mac_address
800 */
801 static int nes_netdev_set_mac_address(struct net_device *netdev, void *p)
802 {
803 struct nes_vnic *nesvnic = netdev_priv(netdev);
804 struct nes_device *nesdev = nesvnic->nesdev;
805 struct sockaddr *mac_addr = p;
806 int i;
807 u32 macaddr_low;
808 u16 macaddr_high;
809
810 if (!is_valid_ether_addr(mac_addr->sa_data))
811 return -EADDRNOTAVAIL;
812
813 memcpy(netdev->dev_addr, mac_addr->sa_data, netdev->addr_len);
814 printk(PFX "%s: Address length = %d, Address = %pM\n",
815 __func__, netdev->addr_len, mac_addr->sa_data);
816 macaddr_high = ((u16)netdev->dev_addr[0]) << 8;
817 macaddr_high += (u16)netdev->dev_addr[1];
818 macaddr_low = ((u32)netdev->dev_addr[2]) << 24;
819 macaddr_low += ((u32)netdev->dev_addr[3]) << 16;
820 macaddr_low += ((u32)netdev->dev_addr[4]) << 8;
821 macaddr_low += (u32)netdev->dev_addr[5];
822
823 for (i = 0; i < NES_MAX_PORT_COUNT; i++) {
824 if (nesvnic->qp_nic_index[i] == 0xf) {
825 break;
826 }
827 nes_write_indexed(nesdev,
828 NES_IDX_PERFECT_FILTER_LOW + (nesvnic->qp_nic_index[i] * 8),
829 macaddr_low);
830 nes_write_indexed(nesdev,
831 NES_IDX_PERFECT_FILTER_HIGH + (nesvnic->qp_nic_index[i] * 8),
832 (u32)macaddr_high | NES_MAC_ADDR_VALID |
833 ((((u32)nesvnic->nic_index) << 16)));
834 }
835 return 0;
836 }
837
838
839 static void set_allmulti(struct nes_device *nesdev, u32 nic_active_bit)
840 {
841 u32 nic_active;
842
843 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL);
844 nic_active |= nic_active_bit;
845 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL, nic_active);
846 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
847 nic_active &= ~nic_active_bit;
848 nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
849 }
850
851 #define get_addr(addrs, index) ((addrs) + (index) * ETH_ALEN)
852
853 /**
854 * nes_netdev_set_multicast_list
855 */
856 static void nes_netdev_set_multicast_list(struct net_device *netdev)
857 {
858 struct nes_vnic *nesvnic = netdev_priv(netdev);
859 struct nes_device *nesdev = nesvnic->nesdev;
860 struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter;
861 u32 nic_active_bit;
862 u32 nic_active;
863 u32 perfect_filter_register_address;
864 u32 macaddr_low;
865 u16 macaddr_high;
866 u8 mc_all_on = 0;
867 u8 mc_index;
868 int mc_nic_index = -1;
869 u8 pft_entries_preallocated = max(nesadapter->adapter_fcn_count *
870 nics_per_function, 4);
871 u8 max_pft_entries_avaiable = NES_PFT_SIZE - pft_entries_preallocated;
872 unsigned long flags;
873 int mc_count = netdev_mc_count(netdev);
874
875 spin_lock_irqsave(&nesadapter->resource_lock, flags);
876 nic_active_bit = 1 << nesvnic->nic_index;
877
878 if (netdev->flags & IFF_PROMISC) {
879 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL);
880 nic_active |= nic_active_bit;
881 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL, nic_active);
882 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
883 nic_active |= nic_active_bit;
884 nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
885 mc_all_on = 1;
886 } else if ((netdev->flags & IFF_ALLMULTI) ||
887 (nesvnic->nic_index > 3)) {
888 set_allmulti(nesdev, nic_active_bit);
889 mc_all_on = 1;
890 } else {
891 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL);
892 nic_active &= ~nic_active_bit;
893 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL, nic_active);
894 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
895 nic_active &= ~nic_active_bit;
896 nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
897 }
898
899 nes_debug(NES_DBG_NIC_RX, "Number of MC entries = %d, Promiscuous = %d, All Multicast = %d.\n",
900 mc_count, !!(netdev->flags & IFF_PROMISC),
901 !!(netdev->flags & IFF_ALLMULTI));
902 if (!mc_all_on) {
903 char *addrs;
904 int i;
905 struct netdev_hw_addr *ha;
906
907 addrs = kmalloc(ETH_ALEN * mc_count, GFP_ATOMIC);
908 if (!addrs) {
909 set_allmulti(nesdev, nic_active_bit);
910 goto unlock;
911 }
912 i = 0;
913 netdev_for_each_mc_addr(ha, netdev)
914 memcpy(get_addr(addrs, i++), ha->addr, ETH_ALEN);
915
916 perfect_filter_register_address = NES_IDX_PERFECT_FILTER_LOW +
917 pft_entries_preallocated * 0x8;
918 for (i = 0, mc_index = 0; mc_index < max_pft_entries_avaiable;
919 mc_index++) {
920 while (i < mc_count && nesvnic->mcrq_mcast_filter &&
921 ((mc_nic_index = nesvnic->mcrq_mcast_filter(nesvnic,
922 get_addr(addrs, i++))) == 0));
923 if (mc_nic_index < 0)
924 mc_nic_index = nesvnic->nic_index;
925 while (nesadapter->pft_mcast_map[mc_index] < 16 &&
926 nesadapter->pft_mcast_map[mc_index] !=
927 nesvnic->nic_index &&
928 mc_index < max_pft_entries_avaiable) {
929 nes_debug(NES_DBG_NIC_RX,
930 "mc_index=%d skipping nic_index=%d, "
931 "used for=%d \n", mc_index,
932 nesvnic->nic_index,
933 nesadapter->pft_mcast_map[mc_index]);
934 mc_index++;
935 }
936 if (mc_index >= max_pft_entries_avaiable)
937 break;
938 if (i < mc_count) {
939 char *addr = get_addr(addrs, i++);
940
941 nes_debug(NES_DBG_NIC_RX, "Assigning MC Address %pM to register 0x%04X nic_idx=%d\n",
942 addr,
943 perfect_filter_register_address+(mc_index * 8),
944 mc_nic_index);
945 macaddr_high = ((u8) addr[0]) << 8;
946 macaddr_high += (u8) addr[1];
947 macaddr_low = ((u8) addr[2]) << 24;
948 macaddr_low += ((u8) addr[3]) << 16;
949 macaddr_low += ((u8) addr[4]) << 8;
950 macaddr_low += (u8) addr[5];
951
952 nes_write_indexed(nesdev,
953 perfect_filter_register_address+(mc_index * 8),
954 macaddr_low);
955 nes_write_indexed(nesdev,
956 perfect_filter_register_address+4+(mc_index * 8),
957 (u32)macaddr_high | NES_MAC_ADDR_VALID |
958 ((((u32)(1<<mc_nic_index)) << 16)));
959 nesadapter->pft_mcast_map[mc_index] =
960 nesvnic->nic_index;
961 } else {
962 nes_debug(NES_DBG_NIC_RX, "Clearing MC Address at register 0x%04X\n",
963 perfect_filter_register_address+(mc_index * 8));
964 nes_write_indexed(nesdev,
965 perfect_filter_register_address+4+(mc_index * 8),
966 0);
967 nesadapter->pft_mcast_map[mc_index] = 255;
968 }
969 }
970 kfree(addrs);
971 /* PFT is not large enough */
972 if (i < mc_count)
973 set_allmulti(nesdev, nic_active_bit);
974 }
975
976 unlock:
977 spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
978 }
979
980
981 /**
982 * nes_netdev_change_mtu
983 */
984 static int nes_netdev_change_mtu(struct net_device *netdev, int new_mtu)
985 {
986 struct nes_vnic *nesvnic = netdev_priv(netdev);
987 struct nes_device *nesdev = nesvnic->nesdev;
988 int ret = 0;
989 u8 jumbomode = 0;
990 u32 nic_active;
991 u32 nic_active_bit;
992 u32 uc_all_active;
993 u32 mc_all_active;
994
995 if ((new_mtu < ETH_ZLEN) || (new_mtu > max_mtu))
996 return -EINVAL;
997
998 netdev->mtu = new_mtu;
999 nesvnic->max_frame_size = new_mtu + VLAN_ETH_HLEN;
1000
1001 if (netdev->mtu > 1500) {
1002 jumbomode=1;
1003 }
1004 nes_nic_init_timer_defaults(nesdev, jumbomode);
1005
1006 if (netif_running(netdev)) {
1007 nic_active_bit = 1 << nesvnic->nic_index;
1008 mc_all_active = nes_read_indexed(nesdev,
1009 NES_IDX_NIC_MULTICAST_ALL) & nic_active_bit;
1010 uc_all_active = nes_read_indexed(nesdev,
1011 NES_IDX_NIC_UNICAST_ALL) & nic_active_bit;
1012
1013 nes_netdev_stop(netdev);
1014 nes_netdev_open(netdev);
1015
1016 nic_active = nes_read_indexed(nesdev,
1017 NES_IDX_NIC_MULTICAST_ALL);
1018 nic_active |= mc_all_active;
1019 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL,
1020 nic_active);
1021
1022 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
1023 nic_active |= uc_all_active;
1024 nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
1025 }
1026
1027 return ret;
1028 }
1029
1030
1031 static const char nes_ethtool_stringset[][ETH_GSTRING_LEN] = {
1032 "Link Change Interrupts",
1033 "Linearized SKBs",
1034 "T/GSO Requests",
1035 "Pause Frames Sent",
1036 "Pause Frames Received",
1037 "Internal Routing Errors",
1038 "SQ SW Dropped SKBs",
1039 "SQ Full",
1040 "Segmented TSO Requests",
1041 "Rx Symbol Errors",
1042 "Rx Jabber Errors",
1043 "Rx Oversized Frames",
1044 "Rx Short Frames",
1045 "Rx Length Errors",
1046 "Rx CRC Errors",
1047 "Rx Port Discard",
1048 "Endnode Rx Discards",
1049 "Endnode Rx Octets",
1050 "Endnode Rx Frames",
1051 "Endnode Tx Octets",
1052 "Endnode Tx Frames",
1053 "Tx Errors",
1054 "mh detected",
1055 "mh pauses",
1056 "Retransmission Count",
1057 "CM Connects",
1058 "CM Accepts",
1059 "Disconnects",
1060 "Connected Events",
1061 "Connect Requests",
1062 "CM Rejects",
1063 "ModifyQP Timeouts",
1064 "CreateQPs",
1065 "SW DestroyQPs",
1066 "DestroyQPs",
1067 "CM Closes",
1068 "CM Packets Sent",
1069 "CM Packets Bounced",
1070 "CM Packets Created",
1071 "CM Packets Rcvd",
1072 "CM Packets Dropped",
1073 "CM Packets Retrans",
1074 "CM Listens Created",
1075 "CM Listens Destroyed",
1076 "CM Backlog Drops",
1077 "CM Loopbacks",
1078 "CM Nodes Created",
1079 "CM Nodes Destroyed",
1080 "CM Accel Drops",
1081 "CM Resets Received",
1082 "Free 4Kpbls",
1083 "Free 256pbls",
1084 "Timer Inits",
1085 "PAU CreateQPs",
1086 "PAU DestroyQPs",
1087 };
1088 #define NES_ETHTOOL_STAT_COUNT ARRAY_SIZE(nes_ethtool_stringset)
1089
1090
1091 /**
1092 * nes_netdev_get_sset_count
1093 */
1094 static int nes_netdev_get_sset_count(struct net_device *netdev, int stringset)
1095 {
1096 if (stringset == ETH_SS_STATS)
1097 return NES_ETHTOOL_STAT_COUNT;
1098 else
1099 return -EINVAL;
1100 }
1101
1102
1103 /**
1104 * nes_netdev_get_strings
1105 */
1106 static void nes_netdev_get_strings(struct net_device *netdev, u32 stringset,
1107 u8 *ethtool_strings)
1108 {
1109 if (stringset == ETH_SS_STATS)
1110 memcpy(ethtool_strings,
1111 &nes_ethtool_stringset,
1112 sizeof(nes_ethtool_stringset));
1113 }
1114
1115
1116 /**
1117 * nes_netdev_get_ethtool_stats
1118 */
1119
1120 static void nes_netdev_get_ethtool_stats(struct net_device *netdev,
1121 struct ethtool_stats *target_ethtool_stats, u64 *target_stat_values)
1122 {
1123 u64 u64temp;
1124 struct nes_vnic *nesvnic = netdev_priv(netdev);
1125 struct nes_device *nesdev = nesvnic->nesdev;
1126 struct nes_adapter *nesadapter = nesdev->nesadapter;
1127 u32 nic_count;
1128 u32 u32temp;
1129 u32 index = 0;
1130
1131 target_ethtool_stats->n_stats = NES_ETHTOOL_STAT_COUNT;
1132 target_stat_values[index] = nesvnic->nesdev->link_status_interrupts;
1133 target_stat_values[++index] = nesvnic->linearized_skbs;
1134 target_stat_values[++index] = nesvnic->tso_requests;
1135
1136 u32temp = nes_read_indexed(nesdev,
1137 NES_IDX_MAC_TX_PAUSE_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1138 nesvnic->nesdev->mac_pause_frames_sent += u32temp;
1139 target_stat_values[++index] = nesvnic->nesdev->mac_pause_frames_sent;
1140
1141 u32temp = nes_read_indexed(nesdev,
1142 NES_IDX_MAC_RX_PAUSE_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1143 nesvnic->nesdev->mac_pause_frames_received += u32temp;
1144
1145 u32temp = nes_read_indexed(nesdev,
1146 NES_IDX_PORT_RX_DISCARDS + (nesvnic->nesdev->mac_index*0x40));
1147 nesvnic->nesdev->port_rx_discards += u32temp;
1148 nesvnic->netstats.rx_dropped += u32temp;
1149
1150 u32temp = nes_read_indexed(nesdev,
1151 NES_IDX_PORT_TX_DISCARDS + (nesvnic->nesdev->mac_index*0x40));
1152 nesvnic->nesdev->port_tx_discards += u32temp;
1153 nesvnic->netstats.tx_dropped += u32temp;
1154
1155 u32temp = nes_read_indexed(nesdev,
1156 NES_IDX_MAC_RX_SHORT_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1157 nesvnic->netstats.rx_dropped += u32temp;
1158 nesvnic->nesdev->mac_rx_errors += u32temp;
1159 nesvnic->nesdev->mac_rx_short_frames += u32temp;
1160
1161 u32temp = nes_read_indexed(nesdev,
1162 NES_IDX_MAC_RX_OVERSIZED_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1163 nesvnic->netstats.rx_dropped += u32temp;
1164 nesvnic->nesdev->mac_rx_errors += u32temp;
1165 nesvnic->nesdev->mac_rx_oversized_frames += u32temp;
1166
1167 u32temp = nes_read_indexed(nesdev,
1168 NES_IDX_MAC_RX_JABBER_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1169 nesvnic->netstats.rx_dropped += u32temp;
1170 nesvnic->nesdev->mac_rx_errors += u32temp;
1171 nesvnic->nesdev->mac_rx_jabber_frames += u32temp;
1172
1173 u32temp = nes_read_indexed(nesdev,
1174 NES_IDX_MAC_RX_SYMBOL_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1175 nesvnic->netstats.rx_dropped += u32temp;
1176 nesvnic->nesdev->mac_rx_errors += u32temp;
1177 nesvnic->nesdev->mac_rx_symbol_err_frames += u32temp;
1178
1179 u32temp = nes_read_indexed(nesdev,
1180 NES_IDX_MAC_RX_LENGTH_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1181 nesvnic->netstats.rx_length_errors += u32temp;
1182 nesvnic->nesdev->mac_rx_errors += u32temp;
1183
1184 u32temp = nes_read_indexed(nesdev,
1185 NES_IDX_MAC_RX_CRC_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1186 nesvnic->nesdev->mac_rx_errors += u32temp;
1187 nesvnic->nesdev->mac_rx_crc_errors += u32temp;
1188 nesvnic->netstats.rx_crc_errors += u32temp;
1189
1190 u32temp = nes_read_indexed(nesdev,
1191 NES_IDX_MAC_TX_ERRORS + (nesvnic->nesdev->mac_index*0x200));
1192 nesvnic->nesdev->mac_tx_errors += u32temp;
1193 nesvnic->netstats.tx_errors += u32temp;
1194
1195 for (nic_count = 0; nic_count < NES_MAX_PORT_COUNT; nic_count++) {
1196 if (nesvnic->qp_nic_index[nic_count] == 0xf)
1197 break;
1198
1199 u32temp = nes_read_indexed(nesdev,
1200 NES_IDX_ENDNODE0_NSTAT_RX_DISCARD +
1201 (nesvnic->qp_nic_index[nic_count]*0x200));
1202 nesvnic->netstats.rx_dropped += u32temp;
1203 nesvnic->endnode_nstat_rx_discard += u32temp;
1204
1205 u64temp = (u64)nes_read_indexed(nesdev,
1206 NES_IDX_ENDNODE0_NSTAT_RX_OCTETS_LO +
1207 (nesvnic->qp_nic_index[nic_count]*0x200));
1208 u64temp += ((u64)nes_read_indexed(nesdev,
1209 NES_IDX_ENDNODE0_NSTAT_RX_OCTETS_HI +
1210 (nesvnic->qp_nic_index[nic_count]*0x200))) << 32;
1211
1212 nesvnic->endnode_nstat_rx_octets += u64temp;
1213 nesvnic->netstats.rx_bytes += u64temp;
1214
1215 u64temp = (u64)nes_read_indexed(nesdev,
1216 NES_IDX_ENDNODE0_NSTAT_RX_FRAMES_LO +
1217 (nesvnic->qp_nic_index[nic_count]*0x200));
1218 u64temp += ((u64)nes_read_indexed(nesdev,
1219 NES_IDX_ENDNODE0_NSTAT_RX_FRAMES_HI +
1220 (nesvnic->qp_nic_index[nic_count]*0x200))) << 32;
1221
1222 nesvnic->endnode_nstat_rx_frames += u64temp;
1223 nesvnic->netstats.rx_packets += u64temp;
1224
1225 u64temp = (u64)nes_read_indexed(nesdev,
1226 NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_LO +
1227 (nesvnic->qp_nic_index[nic_count]*0x200));
1228 u64temp += ((u64)nes_read_indexed(nesdev,
1229 NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_HI +
1230 (nesvnic->qp_nic_index[nic_count]*0x200))) << 32;
1231
1232 nesvnic->endnode_nstat_tx_octets += u64temp;
1233 nesvnic->netstats.tx_bytes += u64temp;
1234
1235 u64temp = (u64)nes_read_indexed(nesdev,
1236 NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_LO +
1237 (nesvnic->qp_nic_index[nic_count]*0x200));
1238 u64temp += ((u64)nes_read_indexed(nesdev,
1239 NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_HI +
1240 (nesvnic->qp_nic_index[nic_count]*0x200))) << 32;
1241
1242 nesvnic->endnode_nstat_tx_frames += u64temp;
1243 nesvnic->netstats.tx_packets += u64temp;
1244
1245 u32temp = nes_read_indexed(nesdev,
1246 NES_IDX_IPV4_TCP_REXMITS + (nesvnic->qp_nic_index[nic_count]*0x200));
1247 nesvnic->endnode_ipv4_tcp_retransmits += u32temp;
1248 }
1249
1250 target_stat_values[++index] = nesvnic->nesdev->mac_pause_frames_received;
1251 target_stat_values[++index] = nesdev->nesadapter->nic_rx_eth_route_err;
1252 target_stat_values[++index] = nesvnic->tx_sw_dropped;
1253 target_stat_values[++index] = nesvnic->sq_full;
1254 target_stat_values[++index] = nesvnic->segmented_tso_requests;
1255 target_stat_values[++index] = nesvnic->nesdev->mac_rx_symbol_err_frames;
1256 target_stat_values[++index] = nesvnic->nesdev->mac_rx_jabber_frames;
1257 target_stat_values[++index] = nesvnic->nesdev->mac_rx_oversized_frames;
1258 target_stat_values[++index] = nesvnic->nesdev->mac_rx_short_frames;
1259 target_stat_values[++index] = nesvnic->netstats.rx_length_errors;
1260 target_stat_values[++index] = nesvnic->nesdev->mac_rx_crc_errors;
1261 target_stat_values[++index] = nesvnic->nesdev->port_rx_discards;
1262 target_stat_values[++index] = nesvnic->endnode_nstat_rx_discard;
1263 target_stat_values[++index] = nesvnic->endnode_nstat_rx_octets;
1264 target_stat_values[++index] = nesvnic->endnode_nstat_rx_frames;
1265 target_stat_values[++index] = nesvnic->endnode_nstat_tx_octets;
1266 target_stat_values[++index] = nesvnic->endnode_nstat_tx_frames;
1267 target_stat_values[++index] = nesvnic->nesdev->mac_tx_errors;
1268 target_stat_values[++index] = mh_detected;
1269 target_stat_values[++index] = mh_pauses_sent;
1270 target_stat_values[++index] = nesvnic->endnode_ipv4_tcp_retransmits;
1271 target_stat_values[++index] = atomic_read(&cm_connects);
1272 target_stat_values[++index] = atomic_read(&cm_accepts);
1273 target_stat_values[++index] = atomic_read(&cm_disconnects);
1274 target_stat_values[++index] = atomic_read(&cm_connecteds);
1275 target_stat_values[++index] = atomic_read(&cm_connect_reqs);
1276 target_stat_values[++index] = atomic_read(&cm_rejects);
1277 target_stat_values[++index] = atomic_read(&mod_qp_timouts);
1278 target_stat_values[++index] = atomic_read(&qps_created);
1279 target_stat_values[++index] = atomic_read(&sw_qps_destroyed);
1280 target_stat_values[++index] = atomic_read(&qps_destroyed);
1281 target_stat_values[++index] = atomic_read(&cm_closes);
1282 target_stat_values[++index] = cm_packets_sent;
1283 target_stat_values[++index] = cm_packets_bounced;
1284 target_stat_values[++index] = cm_packets_created;
1285 target_stat_values[++index] = cm_packets_received;
1286 target_stat_values[++index] = cm_packets_dropped;
1287 target_stat_values[++index] = cm_packets_retrans;
1288 target_stat_values[++index] = atomic_read(&cm_listens_created);
1289 target_stat_values[++index] = atomic_read(&cm_listens_destroyed);
1290 target_stat_values[++index] = cm_backlog_drops;
1291 target_stat_values[++index] = atomic_read(&cm_loopbacks);
1292 target_stat_values[++index] = atomic_read(&cm_nodes_created);
1293 target_stat_values[++index] = atomic_read(&cm_nodes_destroyed);
1294 target_stat_values[++index] = atomic_read(&cm_accel_dropped_pkts);
1295 target_stat_values[++index] = atomic_read(&cm_resets_recvd);
1296 target_stat_values[++index] = nesadapter->free_4kpbl;
1297 target_stat_values[++index] = nesadapter->free_256pbl;
1298 target_stat_values[++index] = int_mod_timer_init;
1299 target_stat_values[++index] = atomic_read(&pau_qps_created);
1300 target_stat_values[++index] = atomic_read(&pau_qps_destroyed);
1301 }
1302
1303 /**
1304 * nes_netdev_get_drvinfo
1305 */
1306 static void nes_netdev_get_drvinfo(struct net_device *netdev,
1307 struct ethtool_drvinfo *drvinfo)
1308 {
1309 struct nes_vnic *nesvnic = netdev_priv(netdev);
1310 struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter;
1311
1312 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
1313 strlcpy(drvinfo->bus_info, pci_name(nesvnic->nesdev->pcidev),
1314 sizeof(drvinfo->bus_info));
1315 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
1316 "%u.%u", nesadapter->firmware_version >> 16,
1317 nesadapter->firmware_version & 0x000000ff);
1318 strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
1319 }
1320
1321
1322 /**
1323 * nes_netdev_set_coalesce
1324 */
1325 static int nes_netdev_set_coalesce(struct net_device *netdev,
1326 struct ethtool_coalesce *et_coalesce)
1327 {
1328 struct nes_vnic *nesvnic = netdev_priv(netdev);
1329 struct nes_device *nesdev = nesvnic->nesdev;
1330 struct nes_adapter *nesadapter = nesdev->nesadapter;
1331 struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
1332 unsigned long flags;
1333
1334 spin_lock_irqsave(&nesadapter->periodic_timer_lock, flags);
1335 if (et_coalesce->rx_max_coalesced_frames_low) {
1336 shared_timer->threshold_low = et_coalesce->rx_max_coalesced_frames_low;
1337 }
1338 if (et_coalesce->rx_max_coalesced_frames_irq) {
1339 shared_timer->threshold_target = et_coalesce->rx_max_coalesced_frames_irq;
1340 }
1341 if (et_coalesce->rx_max_coalesced_frames_high) {
1342 shared_timer->threshold_high = et_coalesce->rx_max_coalesced_frames_high;
1343 }
1344 if (et_coalesce->rx_coalesce_usecs_low) {
1345 shared_timer->timer_in_use_min = et_coalesce->rx_coalesce_usecs_low;
1346 }
1347 if (et_coalesce->rx_coalesce_usecs_high) {
1348 shared_timer->timer_in_use_max = et_coalesce->rx_coalesce_usecs_high;
1349 }
1350 spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
1351
1352 /* using this to drive total interrupt moderation */
1353 nesadapter->et_rx_coalesce_usecs_irq = et_coalesce->rx_coalesce_usecs_irq;
1354 if (et_coalesce->use_adaptive_rx_coalesce) {
1355 nesadapter->et_use_adaptive_rx_coalesce = 1;
1356 nesadapter->timer_int_limit = NES_TIMER_INT_LIMIT_DYNAMIC;
1357 nesadapter->et_rx_coalesce_usecs_irq = 0;
1358 if (et_coalesce->pkt_rate_low) {
1359 nesadapter->et_pkt_rate_low = et_coalesce->pkt_rate_low;
1360 }
1361 } else {
1362 nesadapter->et_use_adaptive_rx_coalesce = 0;
1363 nesadapter->timer_int_limit = NES_TIMER_INT_LIMIT;
1364 if (nesadapter->et_rx_coalesce_usecs_irq) {
1365 nes_write32(nesdev->regs+NES_PERIODIC_CONTROL,
1366 0x80000000 | ((u32)(nesadapter->et_rx_coalesce_usecs_irq*8)));
1367 }
1368 }
1369 return 0;
1370 }
1371
1372
1373 /**
1374 * nes_netdev_get_coalesce
1375 */
1376 static int nes_netdev_get_coalesce(struct net_device *netdev,
1377 struct ethtool_coalesce *et_coalesce)
1378 {
1379 struct nes_vnic *nesvnic = netdev_priv(netdev);
1380 struct nes_device *nesdev = nesvnic->nesdev;
1381 struct nes_adapter *nesadapter = nesdev->nesadapter;
1382 struct ethtool_coalesce temp_et_coalesce;
1383 struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
1384 unsigned long flags;
1385
1386 memset(&temp_et_coalesce, 0, sizeof(temp_et_coalesce));
1387 temp_et_coalesce.rx_coalesce_usecs_irq = nesadapter->et_rx_coalesce_usecs_irq;
1388 temp_et_coalesce.use_adaptive_rx_coalesce = nesadapter->et_use_adaptive_rx_coalesce;
1389 temp_et_coalesce.rate_sample_interval = nesadapter->et_rate_sample_interval;
1390 temp_et_coalesce.pkt_rate_low = nesadapter->et_pkt_rate_low;
1391 spin_lock_irqsave(&nesadapter->periodic_timer_lock, flags);
1392 temp_et_coalesce.rx_max_coalesced_frames_low = shared_timer->threshold_low;
1393 temp_et_coalesce.rx_max_coalesced_frames_irq = shared_timer->threshold_target;
1394 temp_et_coalesce.rx_max_coalesced_frames_high = shared_timer->threshold_high;
1395 temp_et_coalesce.rx_coalesce_usecs_low = shared_timer->timer_in_use_min;
1396 temp_et_coalesce.rx_coalesce_usecs_high = shared_timer->timer_in_use_max;
1397 if (nesadapter->et_use_adaptive_rx_coalesce) {
1398 temp_et_coalesce.rx_coalesce_usecs_irq = shared_timer->timer_in_use;
1399 }
1400 spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
1401 memcpy(et_coalesce, &temp_et_coalesce, sizeof(*et_coalesce));
1402 return 0;
1403 }
1404
1405
1406 /**
1407 * nes_netdev_get_pauseparam
1408 */
1409 static void nes_netdev_get_pauseparam(struct net_device *netdev,
1410 struct ethtool_pauseparam *et_pauseparam)
1411 {
1412 struct nes_vnic *nesvnic = netdev_priv(netdev);
1413
1414 et_pauseparam->autoneg = 0;
1415 et_pauseparam->rx_pause = (nesvnic->nesdev->disable_rx_flow_control == 0) ? 1:0;
1416 et_pauseparam->tx_pause = (nesvnic->nesdev->disable_tx_flow_control == 0) ? 1:0;
1417 }
1418
1419
1420 /**
1421 * nes_netdev_set_pauseparam
1422 */
1423 static int nes_netdev_set_pauseparam(struct net_device *netdev,
1424 struct ethtool_pauseparam *et_pauseparam)
1425 {
1426 struct nes_vnic *nesvnic = netdev_priv(netdev);
1427 struct nes_device *nesdev = nesvnic->nesdev;
1428 u32 u32temp;
1429
1430 if (et_pauseparam->autoneg) {
1431 /* TODO: should return unsupported */
1432 return 0;
1433 }
1434 if ((et_pauseparam->tx_pause == 1) && (nesdev->disable_tx_flow_control == 1)) {
1435 u32temp = nes_read_indexed(nesdev,
1436 NES_IDX_MAC_TX_CONFIG + (nesdev->mac_index*0x200));
1437 u32temp |= NES_IDX_MAC_TX_CONFIG_ENABLE_PAUSE;
1438 nes_write_indexed(nesdev,
1439 NES_IDX_MAC_TX_CONFIG + (nesdev->mac_index*0x200), u32temp);
1440 nesdev->disable_tx_flow_control = 0;
1441 } else if ((et_pauseparam->tx_pause == 0) && (nesdev->disable_tx_flow_control == 0)) {
1442 u32temp = nes_read_indexed(nesdev,
1443 NES_IDX_MAC_TX_CONFIG + (nesdev->mac_index*0x200));
1444 u32temp &= ~NES_IDX_MAC_TX_CONFIG_ENABLE_PAUSE;
1445 nes_write_indexed(nesdev,
1446 NES_IDX_MAC_TX_CONFIG + (nesdev->mac_index*0x200), u32temp);
1447 nesdev->disable_tx_flow_control = 1;
1448 }
1449 if ((et_pauseparam->rx_pause == 1) && (nesdev->disable_rx_flow_control == 1)) {
1450 u32temp = nes_read_indexed(nesdev,
1451 NES_IDX_MPP_DEBUG + (nesdev->mac_index*0x40));
1452 u32temp &= ~NES_IDX_MPP_DEBUG_PORT_DISABLE_PAUSE;
1453 nes_write_indexed(nesdev,
1454 NES_IDX_MPP_DEBUG + (nesdev->mac_index*0x40), u32temp);
1455 nesdev->disable_rx_flow_control = 0;
1456 } else if ((et_pauseparam->rx_pause == 0) && (nesdev->disable_rx_flow_control == 0)) {
1457 u32temp = nes_read_indexed(nesdev,
1458 NES_IDX_MPP_DEBUG + (nesdev->mac_index*0x40));
1459 u32temp |= NES_IDX_MPP_DEBUG_PORT_DISABLE_PAUSE;
1460 nes_write_indexed(nesdev,
1461 NES_IDX_MPP_DEBUG + (nesdev->mac_index*0x40), u32temp);
1462 nesdev->disable_rx_flow_control = 1;
1463 }
1464
1465 return 0;
1466 }
1467
1468
1469 /**
1470 * nes_netdev_get_settings
1471 */
1472 static int nes_netdev_get_settings(struct net_device *netdev, struct ethtool_cmd *et_cmd)
1473 {
1474 struct nes_vnic *nesvnic = netdev_priv(netdev);
1475 struct nes_device *nesdev = nesvnic->nesdev;
1476 struct nes_adapter *nesadapter = nesdev->nesadapter;
1477 u32 mac_index = nesdev->mac_index;
1478 u8 phy_type = nesadapter->phy_type[mac_index];
1479 u8 phy_index = nesadapter->phy_index[mac_index];
1480 u16 phy_data;
1481
1482 et_cmd->duplex = DUPLEX_FULL;
1483 et_cmd->port = PORT_MII;
1484 et_cmd->maxtxpkt = 511;
1485 et_cmd->maxrxpkt = 511;
1486
1487 if (nesadapter->OneG_Mode) {
1488 ethtool_cmd_speed_set(et_cmd, SPEED_1000);
1489 if (phy_type == NES_PHY_TYPE_PUMA_1G) {
1490 et_cmd->supported = SUPPORTED_1000baseT_Full;
1491 et_cmd->advertising = ADVERTISED_1000baseT_Full;
1492 et_cmd->autoneg = AUTONEG_DISABLE;
1493 et_cmd->transceiver = XCVR_INTERNAL;
1494 et_cmd->phy_address = mac_index;
1495 } else {
1496 unsigned long flags;
1497 et_cmd->supported = SUPPORTED_1000baseT_Full
1498 | SUPPORTED_Autoneg;
1499 et_cmd->advertising = ADVERTISED_1000baseT_Full
1500 | ADVERTISED_Autoneg;
1501 spin_lock_irqsave(&nesadapter->phy_lock, flags);
1502 nes_read_1G_phy_reg(nesdev, 0, phy_index, &phy_data);
1503 spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
1504 if (phy_data & 0x1000)
1505 et_cmd->autoneg = AUTONEG_ENABLE;
1506 else
1507 et_cmd->autoneg = AUTONEG_DISABLE;
1508 et_cmd->transceiver = XCVR_EXTERNAL;
1509 et_cmd->phy_address = phy_index;
1510 }
1511 return 0;
1512 }
1513 if ((phy_type == NES_PHY_TYPE_ARGUS) ||
1514 (phy_type == NES_PHY_TYPE_SFP_D) ||
1515 (phy_type == NES_PHY_TYPE_KR)) {
1516 et_cmd->transceiver = XCVR_EXTERNAL;
1517 et_cmd->port = PORT_FIBRE;
1518 et_cmd->supported = SUPPORTED_FIBRE;
1519 et_cmd->advertising = ADVERTISED_FIBRE;
1520 et_cmd->phy_address = phy_index;
1521 } else {
1522 et_cmd->transceiver = XCVR_INTERNAL;
1523 et_cmd->supported = SUPPORTED_10000baseT_Full;
1524 et_cmd->advertising = ADVERTISED_10000baseT_Full;
1525 et_cmd->phy_address = mac_index;
1526 }
1527 ethtool_cmd_speed_set(et_cmd, SPEED_10000);
1528 et_cmd->autoneg = AUTONEG_DISABLE;
1529 return 0;
1530 }
1531
1532
1533 /**
1534 * nes_netdev_set_settings
1535 */
1536 static int nes_netdev_set_settings(struct net_device *netdev, struct ethtool_cmd *et_cmd)
1537 {
1538 struct nes_vnic *nesvnic = netdev_priv(netdev);
1539 struct nes_device *nesdev = nesvnic->nesdev;
1540 struct nes_adapter *nesadapter = nesdev->nesadapter;
1541
1542 if ((nesadapter->OneG_Mode) &&
1543 (nesadapter->phy_type[nesdev->mac_index] != NES_PHY_TYPE_PUMA_1G)) {
1544 unsigned long flags;
1545 u16 phy_data;
1546 u8 phy_index = nesadapter->phy_index[nesdev->mac_index];
1547
1548 spin_lock_irqsave(&nesadapter->phy_lock, flags);
1549 nes_read_1G_phy_reg(nesdev, 0, phy_index, &phy_data);
1550 if (et_cmd->autoneg) {
1551 /* Turn on Full duplex, Autoneg, and restart autonegotiation */
1552 phy_data |= 0x1300;
1553 } else {
1554 /* Turn off autoneg */
1555 phy_data &= ~0x1000;
1556 }
1557 nes_write_1G_phy_reg(nesdev, 0, phy_index, phy_data);
1558 spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
1559 }
1560
1561 return 0;
1562 }
1563
1564
1565 static const struct ethtool_ops nes_ethtool_ops = {
1566 .get_link = ethtool_op_get_link,
1567 .get_settings = nes_netdev_get_settings,
1568 .set_settings = nes_netdev_set_settings,
1569 .get_strings = nes_netdev_get_strings,
1570 .get_sset_count = nes_netdev_get_sset_count,
1571 .get_ethtool_stats = nes_netdev_get_ethtool_stats,
1572 .get_drvinfo = nes_netdev_get_drvinfo,
1573 .get_coalesce = nes_netdev_get_coalesce,
1574 .set_coalesce = nes_netdev_set_coalesce,
1575 .get_pauseparam = nes_netdev_get_pauseparam,
1576 .set_pauseparam = nes_netdev_set_pauseparam,
1577 };
1578
1579 static void nes_vlan_mode(struct net_device *netdev, struct nes_device *nesdev, netdev_features_t features)
1580 {
1581 struct nes_adapter *nesadapter = nesdev->nesadapter;
1582 u32 u32temp;
1583 unsigned long flags;
1584
1585 spin_lock_irqsave(&nesadapter->phy_lock, flags);
1586
1587 nes_debug(NES_DBG_NETDEV, "%s: %s\n", __func__, netdev->name);
1588
1589 /* Enable/Disable VLAN Stripping */
1590 u32temp = nes_read_indexed(nesdev, NES_IDX_PCIX_DIAG);
1591 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1592 u32temp &= 0xfdffffff;
1593 else
1594 u32temp |= 0x02000000;
1595
1596 nes_write_indexed(nesdev, NES_IDX_PCIX_DIAG, u32temp);
1597 spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
1598 }
1599
1600 static netdev_features_t nes_fix_features(struct net_device *netdev, netdev_features_t features)
1601 {
1602 /*
1603 * Since there is no support for separate rx/tx vlan accel
1604 * enable/disable make sure tx flag is always in same state as rx.
1605 */
1606 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1607 features |= NETIF_F_HW_VLAN_CTAG_TX;
1608 else
1609 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
1610
1611 return features;
1612 }
1613
1614 static int nes_set_features(struct net_device *netdev, netdev_features_t features)
1615 {
1616 struct nes_vnic *nesvnic = netdev_priv(netdev);
1617 struct nes_device *nesdev = nesvnic->nesdev;
1618 u32 changed = netdev->features ^ features;
1619
1620 if (changed & NETIF_F_HW_VLAN_CTAG_RX)
1621 nes_vlan_mode(netdev, nesdev, features);
1622
1623 return 0;
1624 }
1625
1626 static const struct net_device_ops nes_netdev_ops = {
1627 .ndo_open = nes_netdev_open,
1628 .ndo_stop = nes_netdev_stop,
1629 .ndo_start_xmit = nes_netdev_start_xmit,
1630 .ndo_get_stats = nes_netdev_get_stats,
1631 .ndo_tx_timeout = nes_netdev_tx_timeout,
1632 .ndo_set_mac_address = nes_netdev_set_mac_address,
1633 .ndo_set_rx_mode = nes_netdev_set_multicast_list,
1634 .ndo_change_mtu = nes_netdev_change_mtu,
1635 .ndo_validate_addr = eth_validate_addr,
1636 .ndo_fix_features = nes_fix_features,
1637 .ndo_set_features = nes_set_features,
1638 };
1639
1640 /**
1641 * nes_netdev_init - initialize network device
1642 */
1643 struct net_device *nes_netdev_init(struct nes_device *nesdev,
1644 void __iomem *mmio_addr)
1645 {
1646 u64 u64temp;
1647 struct nes_vnic *nesvnic;
1648 struct net_device *netdev;
1649 struct nic_qp_map *curr_qp_map;
1650 u8 phy_type = nesdev->nesadapter->phy_type[nesdev->mac_index];
1651
1652 netdev = alloc_etherdev(sizeof(struct nes_vnic));
1653 if (!netdev) {
1654 printk(KERN_ERR PFX "nesvnic etherdev alloc failed");
1655 return NULL;
1656 }
1657 nesvnic = netdev_priv(netdev);
1658
1659 nes_debug(NES_DBG_INIT, "netdev = %p, %s\n", netdev, netdev->name);
1660
1661 SET_NETDEV_DEV(netdev, &nesdev->pcidev->dev);
1662
1663 netdev->watchdog_timeo = NES_TX_TIMEOUT;
1664 netdev->irq = nesdev->pcidev->irq;
1665 netdev->mtu = ETH_DATA_LEN;
1666 netdev->hard_header_len = ETH_HLEN;
1667 netdev->addr_len = ETH_ALEN;
1668 netdev->type = ARPHRD_ETHER;
1669 netdev->netdev_ops = &nes_netdev_ops;
1670 netdev->ethtool_ops = &nes_ethtool_ops;
1671 netif_napi_add(netdev, &nesvnic->napi, nes_netdev_poll, 128);
1672 nes_debug(NES_DBG_INIT, "Enabling VLAN Insert/Delete.\n");
1673
1674 /* Fill in the port structure */
1675 nesvnic->netdev = netdev;
1676 nesvnic->nesdev = nesdev;
1677 nesvnic->msg_enable = netif_msg_init(debug, default_msg);
1678 nesvnic->netdev_index = nesdev->netdev_count;
1679 nesvnic->perfect_filter_index = nesdev->nesadapter->netdev_count;
1680 nesvnic->max_frame_size = netdev->mtu + netdev->hard_header_len + VLAN_HLEN;
1681
1682 curr_qp_map = nic_qp_mapping_per_function[PCI_FUNC(nesdev->pcidev->devfn)];
1683 nesvnic->nic.qp_id = curr_qp_map[nesdev->netdev_count].qpid;
1684 nesvnic->nic_index = curr_qp_map[nesdev->netdev_count].nic_index;
1685 nesvnic->logical_port = curr_qp_map[nesdev->netdev_count].logical_port;
1686
1687 /* Setup the burned in MAC address */
1688 u64temp = (u64)nesdev->nesadapter->mac_addr_low;
1689 u64temp += ((u64)nesdev->nesadapter->mac_addr_high) << 32;
1690 u64temp += nesvnic->nic_index;
1691 netdev->dev_addr[0] = (u8)(u64temp>>40);
1692 netdev->dev_addr[1] = (u8)(u64temp>>32);
1693 netdev->dev_addr[2] = (u8)(u64temp>>24);
1694 netdev->dev_addr[3] = (u8)(u64temp>>16);
1695 netdev->dev_addr[4] = (u8)(u64temp>>8);
1696 netdev->dev_addr[5] = (u8)u64temp;
1697
1698 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_RX;
1699 if ((nesvnic->logical_port < 2) || (nesdev->nesadapter->hw_rev != NE020_REV))
1700 netdev->hw_features |= NETIF_F_TSO;
1701
1702 netdev->features = netdev->hw_features | NETIF_F_HIGHDMA | NETIF_F_HW_VLAN_CTAG_TX;
1703
1704 nes_debug(NES_DBG_INIT, "nesvnic = %p, reported features = 0x%lX, QPid = %d,"
1705 " nic_index = %d, logical_port = %d, mac_index = %d.\n",
1706 nesvnic, (unsigned long)netdev->features, nesvnic->nic.qp_id,
1707 nesvnic->nic_index, nesvnic->logical_port, nesdev->mac_index);
1708
1709 if (nesvnic->nesdev->nesadapter->port_count == 1 &&
1710 nesvnic->nesdev->nesadapter->adapter_fcn_count == 1) {
1711
1712 nesvnic->qp_nic_index[0] = nesvnic->nic_index;
1713 nesvnic->qp_nic_index[1] = nesvnic->nic_index + 1;
1714 if (nes_drv_opt & NES_DRV_OPT_DUAL_LOGICAL_PORT) {
1715 nesvnic->qp_nic_index[2] = 0xf;
1716 nesvnic->qp_nic_index[3] = 0xf;
1717 } else {
1718 nesvnic->qp_nic_index[2] = nesvnic->nic_index + 2;
1719 nesvnic->qp_nic_index[3] = nesvnic->nic_index + 3;
1720 }
1721 } else {
1722 if (nesvnic->nesdev->nesadapter->port_count == 2 ||
1723 (nesvnic->nesdev->nesadapter->port_count == 1 &&
1724 nesvnic->nesdev->nesadapter->adapter_fcn_count == 2)) {
1725 nesvnic->qp_nic_index[0] = nesvnic->nic_index;
1726 nesvnic->qp_nic_index[1] = nesvnic->nic_index
1727 + 2;
1728 nesvnic->qp_nic_index[2] = 0xf;
1729 nesvnic->qp_nic_index[3] = 0xf;
1730 } else {
1731 nesvnic->qp_nic_index[0] = nesvnic->nic_index;
1732 nesvnic->qp_nic_index[1] = 0xf;
1733 nesvnic->qp_nic_index[2] = 0xf;
1734 nesvnic->qp_nic_index[3] = 0xf;
1735 }
1736 }
1737 nesvnic->next_qp_nic_index = 0;
1738
1739 if (nesdev->netdev_count == 0) {
1740 nesvnic->rdma_enabled = 1;
1741 } else {
1742 nesvnic->rdma_enabled = 0;
1743 }
1744 nesvnic->nic_cq.cq_number = nesvnic->nic.qp_id;
1745 init_timer(&nesvnic->event_timer);
1746 nesvnic->event_timer.function = NULL;
1747 spin_lock_init(&nesvnic->tx_lock);
1748 spin_lock_init(&nesvnic->port_ibevent_lock);
1749 nesdev->netdev[nesdev->netdev_count] = netdev;
1750
1751 nes_debug(NES_DBG_INIT, "Adding nesvnic (%p) to the adapters nesvnic_list for MAC%d.\n",
1752 nesvnic, nesdev->mac_index);
1753 list_add_tail(&nesvnic->list, &nesdev->nesadapter->nesvnic_list[nesdev->mac_index]);
1754
1755 if ((nesdev->netdev_count == 0) &&
1756 ((PCI_FUNC(nesdev->pcidev->devfn) == nesdev->mac_index) ||
1757 ((phy_type == NES_PHY_TYPE_PUMA_1G) &&
1758 (((PCI_FUNC(nesdev->pcidev->devfn) == 1) && (nesdev->mac_index == 2)) ||
1759 ((PCI_FUNC(nesdev->pcidev->devfn) == 2) && (nesdev->mac_index == 1)))))) {
1760 u32 u32temp;
1761 u32 link_mask = 0;
1762 u32 link_val = 0;
1763 u16 temp_phy_data;
1764 u16 phy_data = 0;
1765 unsigned long flags;
1766
1767 u32temp = nes_read_indexed(nesdev, NES_IDX_PHY_PCS_CONTROL_STATUS0 +
1768 (0x200 * (nesdev->mac_index & 1)));
1769 if (phy_type != NES_PHY_TYPE_PUMA_1G) {
1770 u32temp |= 0x00200000;
1771 nes_write_indexed(nesdev, NES_IDX_PHY_PCS_CONTROL_STATUS0 +
1772 (0x200 * (nesdev->mac_index & 1)), u32temp);
1773 }
1774
1775 /* Check and set linkup here. This is for back to back */
1776 /* configuration where second port won't get link interrupt */
1777 switch (phy_type) {
1778 case NES_PHY_TYPE_PUMA_1G:
1779 if (nesdev->mac_index < 2) {
1780 link_mask = 0x01010000;
1781 link_val = 0x01010000;
1782 } else {
1783 link_mask = 0x02020000;
1784 link_val = 0x02020000;
1785 }
1786 break;
1787 case NES_PHY_TYPE_SFP_D:
1788 spin_lock_irqsave(&nesdev->nesadapter->phy_lock, flags);
1789 nes_read_10G_phy_reg(nesdev,
1790 nesdev->nesadapter->phy_index[nesdev->mac_index],
1791 1, 0x9003);
1792 temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
1793 nes_read_10G_phy_reg(nesdev,
1794 nesdev->nesadapter->phy_index[nesdev->mac_index],
1795 3, 0x0021);
1796 nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
1797 nes_read_10G_phy_reg(nesdev,
1798 nesdev->nesadapter->phy_index[nesdev->mac_index],
1799 3, 0x0021);
1800 phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
1801 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
1802 phy_data = (!temp_phy_data && (phy_data == 0x8000)) ? 0x4 : 0x0;
1803 break;
1804 default:
1805 link_mask = 0x0f1f0000;
1806 link_val = 0x0f0f0000;
1807 break;
1808 }
1809
1810 u32temp = nes_read_indexed(nesdev,
1811 NES_IDX_PHY_PCS_CONTROL_STATUS0 +
1812 (0x200 * (nesdev->mac_index & 1)));
1813
1814 if (phy_type == NES_PHY_TYPE_SFP_D) {
1815 if (phy_data & 0x0004)
1816 nesvnic->linkup = 1;
1817 } else {
1818 if ((u32temp & link_mask) == link_val)
1819 nesvnic->linkup = 1;
1820 }
1821
1822 /* clear the MAC interrupt status, assumes direct logical to physical mapping */
1823 u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (0x200 * nesdev->mac_index));
1824 nes_debug(NES_DBG_INIT, "Phy interrupt status = 0x%X.\n", u32temp);
1825 nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (0x200 * nesdev->mac_index), u32temp);
1826
1827 nes_init_phy(nesdev);
1828 }
1829
1830 nes_vlan_mode(netdev, nesdev, netdev->features);
1831
1832 return netdev;
1833 }
1834
1835
1836 /**
1837 * nes_netdev_destroy - destroy network device structure
1838 */
1839 void nes_netdev_destroy(struct net_device *netdev)
1840 {
1841 struct nes_vnic *nesvnic = netdev_priv(netdev);
1842
1843 /* make sure 'stop' method is called by Linux stack */
1844 /* nes_netdev_stop(netdev); */
1845
1846 list_del(&nesvnic->list);
1847
1848 if (nesvnic->of_device_registered) {
1849 nes_destroy_ofa_device(nesvnic->nesibdev);
1850 }
1851
1852 free_netdev(netdev);
1853 }
1854
1855
1856 /**
1857 * nes_nic_cm_xmit -- CM calls this to send out pkts
1858 */
1859 int nes_nic_cm_xmit(struct sk_buff *skb, struct net_device *netdev)
1860 {
1861 int ret;
1862
1863 skb->dev = netdev;
1864 ret = dev_queue_xmit(skb);
1865 if (ret) {
1866 nes_debug(NES_DBG_CM, "Bad return code from dev_queue_xmit %d\n", ret);
1867 }
1868
1869 return ret;
1870 }
Linux kernel - Deliverables
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