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[net-next-2.6.git] / drivers / net / vxge / vxge-main.c
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703da5a1
RV		 1/******************************************************************************
2* This software may be used and distributed according to the terms of
3* the GNU General Public License (GPL), incorporated herein by reference.
4* Drivers based on or derived from this code fall under the GPL and must
5* retain the authorship, copyright and license notice. This file is not
6* a complete program and may only be used when the entire operating
7* system is licensed under the GPL.
8* See the file COPYING in this distribution for more information.
9*
926bd900 10* vxge-main.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
703da5a1 11* Virtualized Server Adapter.
926bd900 12* Copyright(c) 2002-2010 Exar Corp.
703da5a1
RV		 13*
14* The module loadable parameters that are supported by the driver and a brief
15* explanation of all the variables:
16* vlan_tag_strip:
17* Strip VLAN Tag enable/disable. Instructs the device to remove
18* the VLAN tag from all received tagged frames that are not
19* replicated at the internal L2 switch.
20* 0 - Do not strip the VLAN tag.
21* 1 - Strip the VLAN tag.
22*
23* addr_learn_en:
24* Enable learning the mac address of the guest OS interface in
25* a virtualization environment.
26* 0 - DISABLE
27* 1 - ENABLE
28*
29* max_config_port:
30* Maximum number of port to be supported.
31* MIN -1 and MAX - 2
32*
33* max_config_vpath:
34* This configures the maximum no of VPATH configures for each
35* device function.
36* MIN - 1 and MAX - 17
37*
38* max_config_dev:
39* This configures maximum no of Device function to be enabled.
40* MIN - 1 and MAX - 17
41*
42******************************************************************************/
43
75f5e1c6
JP		 44#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
45
703da5a1
RV		 46#include <linux/if_vlan.h>
47#include <linux/pci.h>
5a0e3ad6 48#include <linux/slab.h>
2b05e002 49#include <linux/tcp.h>
703da5a1
RV		 50#include <net/ip.h>
51#include <linux/netdevice.h>
52#include <linux/etherdevice.h>
53#include "vxge-main.h"
54#include "vxge-reg.h"
55
56MODULE_LICENSE("Dual BSD/GPL");
57MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
58 "Virtualized Server Adapter");
59
a3aa1884 60static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
703da5a1
RV		 61 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
62 PCI_ANY_ID},
63 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
64 PCI_ANY_ID},
65 {0}
66};
67
68MODULE_DEVICE_TABLE(pci, vxge_id_table);
69
70VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
71VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
72VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
73VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
74VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
75VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
76
77static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
78 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
79static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
80 {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
81module_param_array(bw_percentage, uint, NULL, 0);
82
83static struct vxge_drv_config *driver_config;
84
85static inline int is_vxge_card_up(struct vxgedev *vdev)
86{
87 return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
88}
89
90static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
91{
ff67df55
BL		 92 struct sk_buff **skb_ptr = NULL;
93 struct sk_buff **temp;
94#define NR_SKB_COMPLETED 128
95 struct sk_buff *completed[NR_SKB_COMPLETED];
96 int more;
703da5a1 97
ff67df55
BL		 98 do {
99 more = 0;
100 skb_ptr = completed;
101
98f45da2 102 if (__netif_tx_trylock(fifo->txq)) {
ff67df55
BL		 103 vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
104 NR_SKB_COMPLETED, &more);
98f45da2 105 __netif_tx_unlock(fifo->txq);
ff67df55 106 }
98f45da2 107
ff67df55
BL		 108 /* free SKBs */
109 for (temp = completed; temp != skb_ptr; temp++)
110 dev_kfree_skb_irq(*temp);
98f45da2 111 } while (more);
703da5a1
RV		 112}
113
114static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
115{
116 int i;
117
118 /* Complete all transmits */
119 for (i = 0; i < vdev->no_of_vpath; i++)
120 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
121}
122
123static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
124{
125 int i;
126 struct vxge_ring *ring;
127
128 /* Complete all receives*/
129 for (i = 0; i < vdev->no_of_vpath; i++) {
130 ring = &vdev->vpaths[i].ring;
131 vxge_hw_vpath_poll_rx(ring->handle);
132 }
133}
134
703da5a1
RV		 135/*
136 * vxge_callback_link_up
137 *
138 * This function is called during interrupt context to notify link up state
139 * change.
140 */
141void
142vxge_callback_link_up(struct __vxge_hw_device *hldev)
143{
144 struct net_device *dev = hldev->ndev;
145 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
146
147 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
148 vdev->ndev->name, __func__, __LINE__);
75f5e1c6 149 netdev_notice(vdev->ndev, "Link Up\n");
703da5a1
RV		 150 vdev->stats.link_up++;
151
152 netif_carrier_on(vdev->ndev);
d03848e0 153 netif_tx_wake_all_queues(vdev->ndev);
703da5a1
RV		 154
155 vxge_debug_entryexit(VXGE_TRACE,
156 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
157}
158
159/*
160 * vxge_callback_link_down
161 *
162 * This function is called during interrupt context to notify link down state
163 * change.
164 */
165void
166vxge_callback_link_down(struct __vxge_hw_device *hldev)
167{
168 struct net_device *dev = hldev->ndev;
169 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
170
171 vxge_debug_entryexit(VXGE_TRACE,
172 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
75f5e1c6 173 netdev_notice(vdev->ndev, "Link Down\n");
703da5a1
RV		 174
175 vdev->stats.link_down++;
176 netif_carrier_off(vdev->ndev);
d03848e0 177 netif_tx_stop_all_queues(vdev->ndev);
703da5a1
RV		 178
179 vxge_debug_entryexit(VXGE_TRACE,
180 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
181}
182
183/*
184 * vxge_rx_alloc
185 *
186 * Allocate SKB.
187 */
188static struct sk_buff*
189vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
190{
191 struct net_device *dev;
192 struct sk_buff *skb;
193 struct vxge_rx_priv *rx_priv;
194
195 dev = ring->ndev;
196 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
197 ring->ndev->name, __func__, __LINE__);
198
199 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
200
201 /* try to allocate skb first. this one may fail */
202 skb = netdev_alloc_skb(dev, skb_size +
203 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
204 if (skb == NULL) {
205 vxge_debug_mem(VXGE_ERR,
206 "%s: out of memory to allocate SKB", dev->name);
207 ring->stats.skb_alloc_fail++;
208 return NULL;
209 }
210
211 vxge_debug_mem(VXGE_TRACE,
212 "%s: %s:%d Skb : 0x%p", ring->ndev->name,
213 __func__, __LINE__, skb);
214
215 skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
216
217 rx_priv->skb = skb;
ea11bbe0 218 rx_priv->skb_data = NULL;
703da5a1
RV		 219 rx_priv->data_size = skb_size;
220 vxge_debug_entryexit(VXGE_TRACE,
221 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
222
223 return skb;
224}
225
226/*
227 * vxge_rx_map
228 */
229static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
230{
231 struct vxge_rx_priv *rx_priv;
232 dma_addr_t dma_addr;
233
234 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
235 ring->ndev->name, __func__, __LINE__);
236 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
237
ea11bbe0
BL		 238 rx_priv->skb_data = rx_priv->skb->data;
239 dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
703da5a1
RV		 240 rx_priv->data_size, PCI_DMA_FROMDEVICE);
241
fa15e99b 242 if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
703da5a1
RV		 243 ring->stats.pci_map_fail++;
244 return -EIO;
245 }
246 vxge_debug_mem(VXGE_TRACE,
247 "%s: %s:%d 1 buffer mode dma_addr = 0x%llx",
248 ring->ndev->name, __func__, __LINE__,
249 (unsigned long long)dma_addr);
250 vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
251
252 rx_priv->data_dma = dma_addr;
253 vxge_debug_entryexit(VXGE_TRACE,
254 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
255
256 return 0;
257}
258
259/*
260 * vxge_rx_initial_replenish
261 * Allocation of RxD as an initial replenish procedure.
262 */
263static enum vxge_hw_status
264vxge_rx_initial_replenish(void *dtrh, void *userdata)
265{
266 struct vxge_ring *ring = (struct vxge_ring *)userdata;
267 struct vxge_rx_priv *rx_priv;
268
269 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
270 ring->ndev->name, __func__, __LINE__);
271 if (vxge_rx_alloc(dtrh, ring,
272 VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
273 return VXGE_HW_FAIL;
274
275 if (vxge_rx_map(dtrh, ring)) {
276 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
277 dev_kfree_skb(rx_priv->skb);
278
279 return VXGE_HW_FAIL;
280 }
281 vxge_debug_entryexit(VXGE_TRACE,
282 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
283
284 return VXGE_HW_OK;
285}
286
287static inline void
288vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
289 int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
290{
291
292 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
293 ring->ndev->name, __func__, __LINE__);
294 skb_record_rx_queue(skb, ring->driver_id);
295 skb->protocol = eth_type_trans(skb, ring->ndev);
296
297 ring->stats.rx_frms++;
298 ring->stats.rx_bytes += pkt_length;
299
300 if (skb->pkt_type == PACKET_MULTICAST)
301 ring->stats.rx_mcast++;
302
303 vxge_debug_rx(VXGE_TRACE,
304 "%s: %s:%d skb protocol = %d",
305 ring->ndev->name, __func__, __LINE__, skb->protocol);
306
307 if (ring->gro_enable) {
308 if (ring->vlgrp && ext_info->vlan &&
309 (ring->vlan_tag_strip ==
310 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
a5d165b5 311 vlan_gro_receive(ring->napi_p, ring->vlgrp,
703da5a1
RV		 312 ext_info->vlan, skb);
313 else
a5d165b5 314 napi_gro_receive(ring->napi_p, skb);
703da5a1
RV		 315 } else {
316 if (ring->vlgrp && vlan &&
317 (ring->vlan_tag_strip ==
318 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
319 vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
320 else
321 netif_receive_skb(skb);
322 }
323 vxge_debug_entryexit(VXGE_TRACE,
324 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
325}
326
327static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
328 struct vxge_rx_priv *rx_priv)
329{
330 pci_dma_sync_single_for_device(ring->pdev,
331 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
332
333 vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
334 vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
335}
336
337static inline void vxge_post(int *dtr_cnt, void **first_dtr,
338 void *post_dtr, struct __vxge_hw_ring *ringh)
339{
340 int dtr_count = *dtr_cnt;
341 if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
342 if (*first_dtr)
343 vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
344 *first_dtr = post_dtr;
345 } else
346 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
347 dtr_count++;
348 *dtr_cnt = dtr_count;
349}
350
351/*
352 * vxge_rx_1b_compl
353 *
354 * If the interrupt is because of a received frame or if the receive ring
355 * contains fresh as yet un-processed frames, this function is called.
356 */
357enum vxge_hw_status
358vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
359 u8 t_code, void *userdata)
360{
361 struct vxge_ring *ring = (struct vxge_ring *)userdata;
362 struct net_device *dev = ring->ndev;
363 unsigned int dma_sizes;
364 void *first_dtr = NULL;
365 int dtr_cnt = 0;
366 int data_size;
367 dma_addr_t data_dma;
368 int pkt_length;
369 struct sk_buff *skb;
370 struct vxge_rx_priv *rx_priv;
371 struct vxge_hw_ring_rxd_info ext_info;
372 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
373 ring->ndev->name, __func__, __LINE__);
374 ring->pkts_processed = 0;
375
3363276f 376 vxge_hw_ring_replenish(ringh);
703da5a1
RV		 377
378 do {
3f23e436 379 prefetch((char *)dtr + L1_CACHE_BYTES);
703da5a1
RV		 380 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
381 skb = rx_priv->skb;
382 data_size = rx_priv->data_size;
383 data_dma = rx_priv->data_dma;
ea11bbe0 384 prefetch(rx_priv->skb_data);
703da5a1
RV		 385
386 vxge_debug_rx(VXGE_TRACE,
387 "%s: %s:%d skb = 0x%p",
388 ring->ndev->name, __func__, __LINE__, skb);
389
390 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
391 pkt_length = dma_sizes;
392
22fa125e
SH		 393 pkt_length -= ETH_FCS_LEN;
394
703da5a1
RV		 395 vxge_debug_rx(VXGE_TRACE,
396 "%s: %s:%d Packet Length = %d",
397 ring->ndev->name, __func__, __LINE__, pkt_length);
398
399 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
400
401 /* check skb validity */
402 vxge_assert(skb);
403
404 prefetch((char *)skb + L1_CACHE_BYTES);
405 if (unlikely(t_code)) {
406
407 if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
408 VXGE_HW_OK) {
409
410 ring->stats.rx_errors++;
411 vxge_debug_rx(VXGE_TRACE,
412 "%s: %s :%d Rx T_code is %d",
413 ring->ndev->name, __func__,
414 __LINE__, t_code);
415
416 /* If the t_code is not supported and if the
417 * t_code is other than 0x5 (unparseable packet
418 * such as unknown UPV6 header), Drop it !!!
419 */
420 vxge_re_pre_post(dtr, ring, rx_priv);
421
422 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
423 ring->stats.rx_dropped++;
424 continue;
425 }
426 }
427
428 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
429
430 if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
431
432 if (!vxge_rx_map(dtr, ring)) {
433 skb_put(skb, pkt_length);
434
435 pci_unmap_single(ring->pdev, data_dma,
436 data_size, PCI_DMA_FROMDEVICE);
437
438 vxge_hw_ring_rxd_pre_post(ringh, dtr);
439 vxge_post(&dtr_cnt, &first_dtr, dtr,
440 ringh);
441 } else {
442 dev_kfree_skb(rx_priv->skb);
443 rx_priv->skb = skb;
444 rx_priv->data_size = data_size;
445 vxge_re_pre_post(dtr, ring, rx_priv);
446
447 vxge_post(&dtr_cnt, &first_dtr, dtr,
448 ringh);
449 ring->stats.rx_dropped++;
450 break;
451 }
452 } else {
453 vxge_re_pre_post(dtr, ring, rx_priv);
454
455 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
456 ring->stats.rx_dropped++;
457 break;
458 }
459 } else {
460 struct sk_buff *skb_up;
461
462 skb_up = netdev_alloc_skb(dev, pkt_length +
463 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
464 if (skb_up != NULL) {
465 skb_reserve(skb_up,
466 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
467
468 pci_dma_sync_single_for_cpu(ring->pdev,
469 data_dma, data_size,
470 PCI_DMA_FROMDEVICE);
471
472 vxge_debug_mem(VXGE_TRACE,
473 "%s: %s:%d skb_up = %p",
474 ring->ndev->name, __func__,
475 __LINE__, skb);
476 memcpy(skb_up->data, skb->data, pkt_length);
477
478 vxge_re_pre_post(dtr, ring, rx_priv);
479
480 vxge_post(&dtr_cnt, &first_dtr, dtr,
481 ringh);
482 /* will netif_rx small SKB instead */
483 skb = skb_up;
484 skb_put(skb, pkt_length);
485 } else {
486 vxge_re_pre_post(dtr, ring, rx_priv);
487
488 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
489 vxge_debug_rx(VXGE_ERR,
490 "%s: vxge_rx_1b_compl: out of "
491 "memory", dev->name);
492 ring->stats.skb_alloc_fail++;
493 break;
494 }
495 }
496
497 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
498 !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
499 ring->rx_csum && /* Offload Rx side CSUM */
500 ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
501 ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
502 skb->ip_summed = CHECKSUM_UNNECESSARY;
503 else
504 skb->ip_summed = CHECKSUM_NONE;
505
506 vxge_rx_complete(ring, skb, ext_info.vlan,
507 pkt_length, &ext_info);
508
509 ring->budget--;
510 ring->pkts_processed++;
511 if (!ring->budget)
512 break;
513
514 } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
515 &t_code) == VXGE_HW_OK);
516
517 if (first_dtr)
518 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
519
703da5a1
RV		 520 vxge_debug_entryexit(VXGE_TRACE,
521 "%s:%d Exiting...",
522 __func__, __LINE__);
523 return VXGE_HW_OK;
524}
525
526/*
527 * vxge_xmit_compl
528 *
529 * If an interrupt was raised to indicate DMA complete of the Tx packet,
530 * this function is called. It identifies the last TxD whose buffer was
531 * freed and frees all skbs whose data have already DMA'ed into the NICs
532 * internal memory.
533 */
534enum vxge_hw_status
535vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
536 enum vxge_hw_fifo_tcode t_code, void *userdata,
ff67df55 537 struct sk_buff ***skb_ptr, int nr_skb, int *more)
703da5a1
RV		 538{
539 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
ff67df55 540 struct sk_buff *skb, **done_skb = *skb_ptr;
703da5a1
RV		 541 int pkt_cnt = 0;
542
543 vxge_debug_entryexit(VXGE_TRACE,
544 "%s:%d Entered....", __func__, __LINE__);
545
546 do {
547 int frg_cnt;
548 skb_frag_t *frag;
549 int i = 0, j;
550 struct vxge_tx_priv *txd_priv =
551 vxge_hw_fifo_txdl_private_get(dtr);
552
553 skb = txd_priv->skb;
554 frg_cnt = skb_shinfo(skb)->nr_frags;
555 frag = &skb_shinfo(skb)->frags[0];
556
557 vxge_debug_tx(VXGE_TRACE,
558 "%s: %s:%d fifo_hw = %p dtr = %p "
559 "tcode = 0x%x", fifo->ndev->name, __func__,
560 __LINE__, fifo_hw, dtr, t_code);
561 /* check skb validity */
562 vxge_assert(skb);
563 vxge_debug_tx(VXGE_TRACE,
564 "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
565 fifo->ndev->name, __func__, __LINE__,
566 skb, txd_priv, frg_cnt);
567 if (unlikely(t_code)) {
568 fifo->stats.tx_errors++;
569 vxge_debug_tx(VXGE_ERR,
570 "%s: tx: dtr %p completed due to "
571 "error t_code %01x", fifo->ndev->name,
572 dtr, t_code);
573 vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
574 }
575
576 /* for unfragmented skb */
577 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
578 skb_headlen(skb), PCI_DMA_TODEVICE);
579
580 for (j = 0; j < frg_cnt; j++) {
581 pci_unmap_page(fifo->pdev,
582 txd_priv->dma_buffers[i++],
583 frag->size, PCI_DMA_TODEVICE);
584 frag += 1;
585 }
586
587 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
588
589 /* Updating the statistics block */
590 fifo->stats.tx_frms++;
591 fifo->stats.tx_bytes += skb->len;
592
ff67df55
BL		 593 *done_skb++ = skb;
594
595 if (--nr_skb <= 0) {
596 *more = 1;
597 break;
598 }
703da5a1
RV		 599
600 pkt_cnt++;
601 if (pkt_cnt > fifo->indicate_max_pkts)
602 break;
603
604 } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
605 &dtr, &t_code) == VXGE_HW_OK);
606
ff67df55 607 *skb_ptr = done_skb;
98f45da2
JM		 608 if (netif_tx_queue_stopped(fifo->txq))
609 netif_tx_wake_queue(fifo->txq);
703da5a1 610
703da5a1
RV		 611 vxge_debug_entryexit(VXGE_TRACE,
612 "%s: %s:%d Exiting...",
613 fifo->ndev->name, __func__, __LINE__);
614 return VXGE_HW_OK;
615}
616
28679751 617/* select a vpath to transmit the packet */
98f45da2 618static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
703da5a1
RV		 619{
620 u16 queue_len, counter = 0;
621 if (skb->protocol == htons(ETH_P_IP)) {
622 struct iphdr *ip;
623 struct tcphdr *th;
624
625 ip = ip_hdr(skb);
626
627 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
628 th = (struct tcphdr *)(((unsigned char *)ip) +
629 ip->ihl*4);
630
631 queue_len = vdev->no_of_vpath;
632 counter = (ntohs(th->source) +
633 ntohs(th->dest)) &
634 vdev->vpath_selector[queue_len - 1];
635 if (counter >= queue_len)
636 counter = queue_len - 1;
703da5a1
RV		 637 }
638 }
639 return counter;
640}
641
642static enum vxge_hw_status vxge_search_mac_addr_in_list(
643 struct vxge_vpath *vpath, u64 del_mac)
644{
645 struct list_head *entry, *next;
646 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
647 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
648 return TRUE;
649 }
650 return FALSE;
651}
652
653static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
654{
655 struct macInfo mac_info;
656 u8 *mac_address = NULL;
657 u64 mac_addr = 0, vpath_vector = 0;
658 int vpath_idx = 0;
659 enum vxge_hw_status status = VXGE_HW_OK;
660 struct vxge_vpath *vpath = NULL;
661 struct __vxge_hw_device *hldev;
662
663 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
664
665 mac_address = (u8 *)&mac_addr;
666 memcpy(mac_address, mac_header, ETH_ALEN);
667
668 /* Is this mac address already in the list? */
669 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
670 vpath = &vdev->vpaths[vpath_idx];
671 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
672 return vpath_idx;
673 }
674
675 memset(&mac_info, 0, sizeof(struct macInfo));
676 memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
677
678 /* Any vpath has room to add mac address to its da table? */
679 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
680 vpath = &vdev->vpaths[vpath_idx];
681 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
682 /* Add this mac address to this vpath */
683 mac_info.vpath_no = vpath_idx;
684 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
685 status = vxge_add_mac_addr(vdev, &mac_info);
686 if (status != VXGE_HW_OK)
687 return -EPERM;
688 return vpath_idx;
689 }
690 }
691
692 mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
693 vpath_idx = 0;
694 mac_info.vpath_no = vpath_idx;
695 /* Is the first vpath already selected as catch-basin ? */
696 vpath = &vdev->vpaths[vpath_idx];
697 if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
698 /* Add this mac address to this vpath */
699 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
700 return -EPERM;
701 return vpath_idx;
702 }
703
704 /* Select first vpath as catch-basin */
705 vpath_vector = vxge_mBIT(vpath->device_id);
706 status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
707 vxge_hw_mgmt_reg_type_mrpcim,
708 0,
709 (ulong)offsetof(
710 struct vxge_hw_mrpcim_reg,
711 rts_mgr_cbasin_cfg),
712 vpath_vector);
713 if (status != VXGE_HW_OK) {
714 vxge_debug_tx(VXGE_ERR,
715 "%s: Unable to set the vpath-%d in catch-basin mode",
716 VXGE_DRIVER_NAME, vpath->device_id);
717 return -EPERM;
718 }
719
720 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
721 return -EPERM;
722
723 return vpath_idx;
724}
725
726/**
727 * vxge_xmit
728 * @skb : the socket buffer containing the Tx data.
729 * @dev : device pointer.
730 *
731 * This function is the Tx entry point of the driver. Neterion NIC supports
732 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
703da5a1 733*/
61357325 734static netdev_tx_t
703da5a1
RV		 735vxge_xmit(struct sk_buff *skb, struct net_device *dev)
736{
737 struct vxge_fifo *fifo = NULL;
738 void *dtr_priv;
739 void *dtr = NULL;
740 struct vxgedev *vdev = NULL;
741 enum vxge_hw_status status;
742 int frg_cnt, first_frg_len;
743 skb_frag_t *frag;
744 int i = 0, j = 0, avail;
745 u64 dma_pointer;
746 struct vxge_tx_priv *txdl_priv = NULL;
747 struct __vxge_hw_fifo *fifo_hw;
703da5a1 748 int offload_type;
703da5a1 749 int vpath_no = 0;
703da5a1
RV		 750
751 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
752 dev->name, __func__, __LINE__);
753
754 /* A buffer with no data will be dropped */
755 if (unlikely(skb->len <= 0)) {
756 vxge_debug_tx(VXGE_ERR,
757 "%s: Buffer has no data..", dev->name);
758 dev_kfree_skb(skb);
759 return NETDEV_TX_OK;
760 }
761
762 vdev = (struct vxgedev *)netdev_priv(dev);
763
764 if (unlikely(!is_vxge_card_up(vdev))) {
765 vxge_debug_tx(VXGE_ERR,
766 "%s: vdev not initialized", dev->name);
767 dev_kfree_skb(skb);
768 return NETDEV_TX_OK;
769 }
770
771 if (vdev->config.addr_learn_en) {
772 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
773 if (vpath_no == -EPERM) {
774 vxge_debug_tx(VXGE_ERR,
775 "%s: Failed to store the mac address",
776 dev->name);
777 dev_kfree_skb(skb);
778 return NETDEV_TX_OK;
779 }
780 }
781
782 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
783 vpath_no = skb_get_queue_mapping(skb);
784 else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
98f45da2 785 vpath_no = vxge_get_vpath_no(vdev, skb);
703da5a1
RV		 786
787 vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
788
789 if (vpath_no >= vdev->no_of_vpath)
790 vpath_no = 0;
791
792 fifo = &vdev->vpaths[vpath_no].fifo;
793 fifo_hw = fifo->handle;
794
98f45da2 795 if (netif_tx_queue_stopped(fifo->txq))
d03848e0 796 return NETDEV_TX_BUSY;
d03848e0 797
703da5a1
RV		 798 avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
799 if (avail == 0) {
800 vxge_debug_tx(VXGE_ERR,
801 "%s: No free TXDs available", dev->name);
802 fifo->stats.txd_not_free++;
98f45da2 803 goto _exit0;
703da5a1
RV		 804 }
805
4403b371
BL		 806 /* Last TXD? Stop tx queue to avoid dropping packets. TX
807 * completion will resume the queue.
808 */
809 if (avail == 1)
98f45da2 810 netif_tx_stop_queue(fifo->txq);
4403b371 811
703da5a1
RV		 812 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
813 if (unlikely(status != VXGE_HW_OK)) {
814 vxge_debug_tx(VXGE_ERR,
815 "%s: Out of descriptors .", dev->name);
816 fifo->stats.txd_out_of_desc++;
98f45da2 817 goto _exit0;
703da5a1
RV		 818 }
819
820 vxge_debug_tx(VXGE_TRACE,
821 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
822 dev->name, __func__, __LINE__,
823 fifo_hw, dtr, dtr_priv);
824
825 if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
826 u16 vlan_tag = vlan_tx_tag_get(skb);
827 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
828 }
829
830 first_frg_len = skb_headlen(skb);
831
832 dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
833 PCI_DMA_TODEVICE);
834
835 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
836 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
703da5a1 837 fifo->stats.pci_map_fail++;
98f45da2 838 goto _exit0;
703da5a1
RV		 839 }
840
841 txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
842 txdl_priv->skb = skb;
843 txdl_priv->dma_buffers[j] = dma_pointer;
844
845 frg_cnt = skb_shinfo(skb)->nr_frags;
846 vxge_debug_tx(VXGE_TRACE,
847 "%s: %s:%d skb = %p txdl_priv = %p "
848 "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
849 __func__, __LINE__, skb, txdl_priv,
850 frg_cnt, (unsigned long long)dma_pointer);
851
852 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
853 first_frg_len);
854
855 frag = &skb_shinfo(skb)->frags[0];
856 for (i = 0; i < frg_cnt; i++) {
857 /* ignore 0 length fragment */
858 if (!frag->size)
859 continue;
860
98f45da2 861 dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page,
703da5a1
RV		 862 frag->page_offset, frag->size,
863 PCI_DMA_TODEVICE);
864
865 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
98f45da2 866 goto _exit2;
703da5a1
RV		 867 vxge_debug_tx(VXGE_TRACE,
868 "%s: %s:%d frag = %d dma_pointer = 0x%llx",
869 dev->name, __func__, __LINE__, i,
870 (unsigned long long)dma_pointer);
871
872 txdl_priv->dma_buffers[j] = dma_pointer;
873 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
874 frag->size);
875 frag += 1;
876 }
877
878 offload_type = vxge_offload_type(skb);
879
880 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
703da5a1
RV		 881 int mss = vxge_tcp_mss(skb);
882 if (mss) {
98f45da2 883 vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
703da5a1
RV		 884 dev->name, __func__, __LINE__, mss);
885 vxge_hw_fifo_txdl_mss_set(dtr, mss);
886 } else {
887 vxge_assert(skb->len <=
888 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
889 vxge_assert(0);
890 goto _exit1;
891 }
892 }
893
894 if (skb->ip_summed == CHECKSUM_PARTIAL)
895 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
896 VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
897 VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
898 VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
899
900 vxge_hw_fifo_txdl_post(fifo_hw, dtr);
703da5a1 901
703da5a1
RV		 902 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
903 dev->name, __func__, __LINE__);
6ed10654 904 return NETDEV_TX_OK;
703da5a1 905
98f45da2 906_exit2:
703da5a1 907 vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
703da5a1
RV		 908_exit1:
909 j = 0;
910 frag = &skb_shinfo(skb)->frags[0];
911
912 pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
913 skb_headlen(skb), PCI_DMA_TODEVICE);
914
915 for (; j < i; j++) {
916 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
917 frag->size, PCI_DMA_TODEVICE);
918 frag += 1;
919 }
920
921 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
98f45da2
JM		 922_exit0:
923 netif_tx_stop_queue(fifo->txq);
703da5a1 924 dev_kfree_skb(skb);
703da5a1 925
6ed10654 926 return NETDEV_TX_OK;
703da5a1
RV		 927}
928
929/*
930 * vxge_rx_term
931 *
932 * Function will be called by hw function to abort all outstanding receive
933 * descriptors.
934 */
935static void
936vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
937{
938 struct vxge_ring *ring = (struct vxge_ring *)userdata;
939 struct vxge_rx_priv *rx_priv =
940 vxge_hw_ring_rxd_private_get(dtrh);
941
942 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
943 ring->ndev->name, __func__, __LINE__);
944 if (state != VXGE_HW_RXD_STATE_POSTED)
945 return;
946
947 pci_unmap_single(ring->pdev, rx_priv->data_dma,
948 rx_priv->data_size, PCI_DMA_FROMDEVICE);
949
950 dev_kfree_skb(rx_priv->skb);
ea11bbe0 951 rx_priv->skb_data = NULL;
703da5a1
RV		 952
953 vxge_debug_entryexit(VXGE_TRACE,
954 "%s: %s:%d Exiting...",
955 ring->ndev->name, __func__, __LINE__);
956}
957
958/*
959 * vxge_tx_term
960 *
961 * Function will be called to abort all outstanding tx descriptors
962 */
963static void
964vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
965{
966 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
967 skb_frag_t *frag;
968 int i = 0, j, frg_cnt;
969 struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
970 struct sk_buff *skb = txd_priv->skb;
971
972 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
973
974 if (state != VXGE_HW_TXDL_STATE_POSTED)
975 return;
976
977 /* check skb validity */
978 vxge_assert(skb);
979 frg_cnt = skb_shinfo(skb)->nr_frags;
980 frag = &skb_shinfo(skb)->frags[0];
981
982 /* for unfragmented skb */
983 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
984 skb_headlen(skb), PCI_DMA_TODEVICE);
985
986 for (j = 0; j < frg_cnt; j++) {
987 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
988 frag->size, PCI_DMA_TODEVICE);
989 frag += 1;
990 }
991
992 dev_kfree_skb(skb);
993
994 vxge_debug_entryexit(VXGE_TRACE,
995 "%s:%d Exiting...", __func__, __LINE__);
996}
997
998/**
999 * vxge_set_multicast
1000 * @dev: pointer to the device structure
1001 *
1002 * Entry point for multicast address enable/disable
1003 * This function is a driver entry point which gets called by the kernel
1004 * whenever multicast addresses must be enabled/disabled. This also gets
1005 * called to set/reset promiscuous mode. Depending on the deivce flag, we
1006 * determine, if multicast address must be enabled or if promiscuous mode
1007 * is to be disabled etc.
1008 */
1009static void vxge_set_multicast(struct net_device *dev)
1010{
22bedad3 1011 struct netdev_hw_addr *ha;
703da5a1
RV		 1012 struct vxgedev *vdev;
1013 int i, mcast_cnt = 0;
7adf7d1b
JM		 1014 struct __vxge_hw_device *hldev;
1015 struct vxge_vpath *vpath;
703da5a1
RV		 1016 enum vxge_hw_status status = VXGE_HW_OK;
1017 struct macInfo mac_info;
1018 int vpath_idx = 0;
1019 struct vxge_mac_addrs *mac_entry;
1020 struct list_head *list_head;
1021 struct list_head *entry, *next;
1022 u8 *mac_address = NULL;
1023
1024 vxge_debug_entryexit(VXGE_TRACE,
1025 "%s:%d", __func__, __LINE__);
1026
1027 vdev = (struct vxgedev *)netdev_priv(dev);
1028 hldev = (struct __vxge_hw_device *)vdev->devh;
1029
1030 if (unlikely(!is_vxge_card_up(vdev)))
1031 return;
1032
1033 if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1034 for (i = 0; i < vdev->no_of_vpath; i++) {
7adf7d1b
JM		 1035 vpath = &vdev->vpaths[i];
1036 vxge_assert(vpath->is_open);
1037 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1038 if (status != VXGE_HW_OK)
1039 vxge_debug_init(VXGE_ERR, "failed to enable "
1040 "multicast, status %d", status);
703da5a1
RV		 1041 vdev->all_multi_flg = 1;
1042 }
7adf7d1b 1043 } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
703da5a1 1044 for (i = 0; i < vdev->no_of_vpath; i++) {
7adf7d1b
JM		 1045 vpath = &vdev->vpaths[i];
1046 vxge_assert(vpath->is_open);
1047 status = vxge_hw_vpath_mcast_disable(vpath->handle);
1048 if (status != VXGE_HW_OK)
1049 vxge_debug_init(VXGE_ERR, "failed to disable "
1050 "multicast, status %d", status);
1051 vdev->all_multi_flg = 0;
703da5a1
RV		 1052 }
1053 }
1054
703da5a1
RV		 1055
1056 if (!vdev->config.addr_learn_en) {
7adf7d1b
JM		 1057 for (i = 0; i < vdev->no_of_vpath; i++) {
1058 vpath = &vdev->vpaths[i];
1059 vxge_assert(vpath->is_open);
1060
1061 if (dev->flags & IFF_PROMISC)
703da5a1 1062 status = vxge_hw_vpath_promisc_enable(
7adf7d1b
JM		 1063 vpath->handle);
1064 else
703da5a1 1065 status = vxge_hw_vpath_promisc_disable(
7adf7d1b
JM		 1066 vpath->handle);
1067 if (status != VXGE_HW_OK)
1068 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1069 ", status %d", dev->flags&IFF_PROMISC ?
1070 "enable" : "disable", status);
703da5a1
RV		 1071 }
1072 }
1073
1074 memset(&mac_info, 0, sizeof(struct macInfo));
1075 /* Update individual M_CAST address list */
4cd24eaf 1076 if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
703da5a1
RV		 1077 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1078 list_head = &vdev->vpaths[0].mac_addr_list;
4cd24eaf 1079 if ((netdev_mc_count(dev) +
703da5a1
RV		 1080 (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1081 vdev->vpaths[0].max_mac_addr_cnt)
1082 goto _set_all_mcast;
1083
1084 /* Delete previous MC's */
1085 for (i = 0; i < mcast_cnt; i++) {
703da5a1 1086 list_for_each_safe(entry, next, list_head) {
703da5a1
RV		 1087 mac_entry = (struct vxge_mac_addrs *) entry;
1088 /* Copy the mac address to delete */
1089 mac_address = (u8 *)&mac_entry->macaddr;
1090 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1091
1092 /* Is this a multicast address */
1093 if (0x01 & mac_info.macaddr[0]) {
1094 for (vpath_idx = 0; vpath_idx <
1095 vdev->no_of_vpath;
1096 vpath_idx++) {
1097 mac_info.vpath_no = vpath_idx;
1098 status = vxge_del_mac_addr(
1099 vdev,
1100 &mac_info);
1101 }
1102 }
1103 }
1104 }
1105
1106 /* Add new ones */
22bedad3
JP		 1107 netdev_for_each_mc_addr(ha, dev) {
1108 memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
703da5a1
RV		 1109 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1110 vpath_idx++) {
1111 mac_info.vpath_no = vpath_idx;
1112 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1113 status = vxge_add_mac_addr(vdev, &mac_info);
1114 if (status != VXGE_HW_OK) {
1115 vxge_debug_init(VXGE_ERR,
1116 "%s:%d Setting individual"
1117 "multicast address failed",
1118 __func__, __LINE__);
1119 goto _set_all_mcast;
1120 }
1121 }
1122 }
1123
1124 return;
1125_set_all_mcast:
1126 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1127 /* Delete previous MC's */
1128 for (i = 0; i < mcast_cnt; i++) {
703da5a1 1129 list_for_each_safe(entry, next, list_head) {
703da5a1
RV		 1130 mac_entry = (struct vxge_mac_addrs *) entry;
1131 /* Copy the mac address to delete */
1132 mac_address = (u8 *)&mac_entry->macaddr;
1133 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1134
1135 /* Is this a multicast address */
1136 if (0x01 & mac_info.macaddr[0])
1137 break;
1138 }
1139
1140 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1141 vpath_idx++) {
1142 mac_info.vpath_no = vpath_idx;
1143 status = vxge_del_mac_addr(vdev, &mac_info);
1144 }
1145 }
1146
1147 /* Enable all multicast */
1148 for (i = 0; i < vdev->no_of_vpath; i++) {
7adf7d1b
JM		 1149 vpath = &vdev->vpaths[i];
1150 vxge_assert(vpath->is_open);
1151
1152 status = vxge_hw_vpath_mcast_enable(vpath->handle);
703da5a1
RV		 1153 if (status != VXGE_HW_OK) {
1154 vxge_debug_init(VXGE_ERR,
1155 "%s:%d Enabling all multicasts failed",
1156 __func__, __LINE__);
1157 }
1158 vdev->all_multi_flg = 1;
1159 }
1160 dev->flags |= IFF_ALLMULTI;
1161 }
1162
1163 vxge_debug_entryexit(VXGE_TRACE,
1164 "%s:%d Exiting...", __func__, __LINE__);
1165}
1166
1167/**
1168 * vxge_set_mac_addr
1169 * @dev: pointer to the device structure
1170 *
1171 * Update entry "0" (default MAC addr)
1172 */
1173static int vxge_set_mac_addr(struct net_device *dev, void *p)
1174{
1175 struct sockaddr *addr = p;
1176 struct vxgedev *vdev;
1177 struct __vxge_hw_device *hldev;
1178 enum vxge_hw_status status = VXGE_HW_OK;
1179 struct macInfo mac_info_new, mac_info_old;
1180 int vpath_idx = 0;
1181
1182 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1183
1184 vdev = (struct vxgedev *)netdev_priv(dev);
1185 hldev = vdev->devh;
1186
1187 if (!is_valid_ether_addr(addr->sa_data))
1188 return -EINVAL;
1189
1190 memset(&mac_info_new, 0, sizeof(struct macInfo));
1191 memset(&mac_info_old, 0, sizeof(struct macInfo));
1192
1193 vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...",
1194 __func__, __LINE__);
1195
1196 /* Get the old address */
1197 memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1198
1199 /* Copy the new address */
1200 memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1201
1202 /* First delete the old mac address from all the vpaths
1203 as we can't specify the index while adding new mac address */
1204 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1205 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1206 if (!vpath->is_open) {
1207 /* This can happen when this interface is added/removed
1208 to the bonding interface. Delete this station address
1209 from the linked list */
1210 vxge_mac_list_del(vpath, &mac_info_old);
1211
1212 /* Add this new address to the linked list
1213 for later restoring */
1214 vxge_mac_list_add(vpath, &mac_info_new);
1215
1216 continue;
1217 }
1218 /* Delete the station address */
1219 mac_info_old.vpath_no = vpath_idx;
1220 status = vxge_del_mac_addr(vdev, &mac_info_old);
1221 }
1222
1223 if (unlikely(!is_vxge_card_up(vdev))) {
1224 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1225 return VXGE_HW_OK;
1226 }
1227
1228 /* Set this mac address to all the vpaths */
1229 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1230 mac_info_new.vpath_no = vpath_idx;
1231 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1232 status = vxge_add_mac_addr(vdev, &mac_info_new);
1233 if (status != VXGE_HW_OK)
1234 return -EINVAL;
1235 }
1236
1237 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1238
1239 return status;
1240}
1241
1242/*
1243 * vxge_vpath_intr_enable
1244 * @vdev: pointer to vdev
1245 * @vp_id: vpath for which to enable the interrupts
1246 *
1247 * Enables the interrupts for the vpath
1248*/
1249void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1250{
1251 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
b59c9457
SH		 1252 int msix_id = 0;
1253 int tim_msix_id[4] = {0, 1, 0, 0};
1254 int alarm_msix_id = VXGE_ALARM_MSIX_ID;
703da5a1
RV		 1255
1256 vxge_hw_vpath_intr_enable(vpath->handle);
1257
1258 if (vdev->config.intr_type == INTA)
1259 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1260 else {
703da5a1
RV		 1261 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1262 alarm_msix_id);
1263
b59c9457 1264 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
703da5a1
RV		 1265 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1266 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1267
1268 /* enable the alarm vector */
b59c9457
SH		 1269 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1270 VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1271 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
703da5a1
RV		 1272 }
1273}
1274
1275/*
1276 * vxge_vpath_intr_disable
1277 * @vdev: pointer to vdev
1278 * @vp_id: vpath for which to disable the interrupts
1279 *
1280 * Disables the interrupts for the vpath
1281*/
1282void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1283{
1284 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1285 int msix_id;
1286
1287 vxge_hw_vpath_intr_disable(vpath->handle);
1288
1289 if (vdev->config.intr_type == INTA)
1290 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1291 else {
b59c9457 1292 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
703da5a1
RV		 1293 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1294 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1295
1296 /* disable the alarm vector */
b59c9457
SH		 1297 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1298 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
703da5a1
RV		 1299 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1300 }
1301}
1302
1303/*
1304 * vxge_reset_vpath
1305 * @vdev: pointer to vdev
1306 * @vp_id: vpath to reset
1307 *
1308 * Resets the vpath
1309*/
1310static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1311{
1312 enum vxge_hw_status status = VXGE_HW_OK;
7adf7d1b 1313 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
703da5a1
RV		 1314 int ret = 0;
1315
1316 /* check if device is down already */
1317 if (unlikely(!is_vxge_card_up(vdev)))
1318 return 0;
1319
1320 /* is device reset already scheduled */
1321 if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1322 return 0;
1323
7adf7d1b
JM		 1324 if (vpath->handle) {
1325 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
703da5a1 1326 if (is_vxge_card_up(vdev) &&
7adf7d1b 1327 vxge_hw_vpath_recover_from_reset(vpath->handle)
703da5a1
RV		 1328 != VXGE_HW_OK) {
1329 vxge_debug_init(VXGE_ERR,
1330 "vxge_hw_vpath_recover_from_reset"
1331 "failed for vpath:%d", vp_id);
1332 return status;
1333 }
1334 } else {
1335 vxge_debug_init(VXGE_ERR,
1336 "vxge_hw_vpath_reset failed for"
1337 "vpath:%d", vp_id);
1338 return status;
1339 }
1340 } else
1341 return VXGE_HW_FAIL;
1342
7adf7d1b
JM		 1343 vxge_restore_vpath_mac_addr(vpath);
1344 vxge_restore_vpath_vid_table(vpath);
703da5a1
RV		 1345
1346 /* Enable all broadcast */
7adf7d1b
JM		 1347 vxge_hw_vpath_bcast_enable(vpath->handle);
1348
1349 /* Enable all multicast */
1350 if (vdev->all_multi_flg) {
1351 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1352 if (status != VXGE_HW_OK)
1353 vxge_debug_init(VXGE_ERR,
1354 "%s:%d Enabling multicast failed",
1355 __func__, __LINE__);
1356 }
703da5a1
RV		 1357
1358 /* Enable the interrupts */
1359 vxge_vpath_intr_enable(vdev, vp_id);
1360
1361 smp_wmb();
1362
1363 /* Enable the flow of traffic through the vpath */
7adf7d1b 1364 vxge_hw_vpath_enable(vpath->handle);
703da5a1
RV		 1365
1366 smp_wmb();
7adf7d1b
JM		 1367 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1368 vpath->ring.last_status = VXGE_HW_OK;
703da5a1
RV		 1369
1370 /* Vpath reset done */
1371 clear_bit(vp_id, &vdev->vp_reset);
1372
1373 /* Start the vpath queue */
98f45da2
JM		 1374 if (netif_tx_queue_stopped(vpath->fifo.txq))
1375 netif_tx_wake_queue(vpath->fifo.txq);
703da5a1
RV		 1376
1377 return ret;
1378}
1379
1380static int do_vxge_reset(struct vxgedev *vdev, int event)
1381{
1382 enum vxge_hw_status status;
1383 int ret = 0, vp_id, i;
1384
1385 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1386
1387 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1388 /* check if device is down already */
1389 if (unlikely(!is_vxge_card_up(vdev)))
1390 return 0;
1391
1392 /* is reset already scheduled */
1393 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1394 return 0;
1395 }
1396
1397 if (event == VXGE_LL_FULL_RESET) {
1398 /* wait for all the vpath reset to complete */
1399 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1400 while (test_bit(vp_id, &vdev->vp_reset))
1401 msleep(50);
1402 }
1403
1404 /* if execution mode is set to debug, don't reset the adapter */
1405 if (unlikely(vdev->exec_mode)) {
1406 vxge_debug_init(VXGE_ERR,
1407 "%s: execution mode is debug, returning..",
1408 vdev->ndev->name);
7adf7d1b
JM		 1409 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1410 netif_tx_stop_all_queues(vdev->ndev);
1411 return 0;
703da5a1
RV		 1412 }
1413 }
1414
1415 if (event == VXGE_LL_FULL_RESET) {
1416 vxge_hw_device_intr_disable(vdev->devh);
1417
1418 switch (vdev->cric_err_event) {
1419 case VXGE_HW_EVENT_UNKNOWN:
d03848e0 1420 netif_tx_stop_all_queues(vdev->ndev);
703da5a1
RV		 1421 vxge_debug_init(VXGE_ERR,
1422 "fatal: %s: Disabling device due to"
1423 "unknown error",
1424 vdev->ndev->name);
1425 ret = -EPERM;
1426 goto out;
1427 case VXGE_HW_EVENT_RESET_START:
1428 break;
1429 case VXGE_HW_EVENT_RESET_COMPLETE:
1430 case VXGE_HW_EVENT_LINK_DOWN:
1431 case VXGE_HW_EVENT_LINK_UP:
1432 case VXGE_HW_EVENT_ALARM_CLEARED:
1433 case VXGE_HW_EVENT_ECCERR:
1434 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1435 ret = -EPERM;
1436 goto out;
1437 case VXGE_HW_EVENT_FIFO_ERR:
1438 case VXGE_HW_EVENT_VPATH_ERR:
1439 break;
1440 case VXGE_HW_EVENT_CRITICAL_ERR:
d03848e0 1441 netif_tx_stop_all_queues(vdev->ndev);
703da5a1
RV		 1442 vxge_debug_init(VXGE_ERR,
1443 "fatal: %s: Disabling device due to"
1444 "serious error",
1445 vdev->ndev->name);
1446 /* SOP or device reset required */
1447 /* This event is not currently used */
1448 ret = -EPERM;
1449 goto out;
1450 case VXGE_HW_EVENT_SERR:
d03848e0 1451 netif_tx_stop_all_queues(vdev->ndev);
703da5a1
RV		 1452 vxge_debug_init(VXGE_ERR,
1453 "fatal: %s: Disabling device due to"
1454 "serious error",
1455 vdev->ndev->name);
1456 ret = -EPERM;
1457 goto out;
1458 case VXGE_HW_EVENT_SRPCIM_SERR:
1459 case VXGE_HW_EVENT_MRPCIM_SERR:
1460 ret = -EPERM;
1461 goto out;
1462 case VXGE_HW_EVENT_SLOT_FREEZE:
d03848e0 1463 netif_tx_stop_all_queues(vdev->ndev);
703da5a1
RV		 1464 vxge_debug_init(VXGE_ERR,
1465 "fatal: %s: Disabling device due to"
1466 "slot freeze",
1467 vdev->ndev->name);
1468 ret = -EPERM;
1469 goto out;
1470 default:
1471 break;
1472
1473 }
1474 }
1475
1476 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
d03848e0 1477 netif_tx_stop_all_queues(vdev->ndev);
703da5a1
RV		 1478
1479 if (event == VXGE_LL_FULL_RESET) {
1480 status = vxge_reset_all_vpaths(vdev);
1481 if (status != VXGE_HW_OK) {
1482 vxge_debug_init(VXGE_ERR,
1483 "fatal: %s: can not reset vpaths",
1484 vdev->ndev->name);
1485 ret = -EPERM;
1486 goto out;
1487 }
1488 }
1489
1490 if (event == VXGE_LL_COMPL_RESET) {
1491 for (i = 0; i < vdev->no_of_vpath; i++)
1492 if (vdev->vpaths[i].handle) {
1493 if (vxge_hw_vpath_recover_from_reset(
1494 vdev->vpaths[i].handle)
1495 != VXGE_HW_OK) {
1496 vxge_debug_init(VXGE_ERR,
1497 "vxge_hw_vpath_recover_"
1498 "from_reset failed for vpath: "
1499 "%d", i);
1500 ret = -EPERM;
1501 goto out;
1502 }
1503 } else {
1504 vxge_debug_init(VXGE_ERR,
1505 "vxge_hw_vpath_reset failed for "
1506 "vpath:%d", i);
1507 ret = -EPERM;
1508 goto out;
1509 }
1510 }
1511
1512 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1513 /* Reprogram the DA table with populated mac addresses */
1514 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1515 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1516 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1517 }
1518
1519 /* enable vpath interrupts */
1520 for (i = 0; i < vdev->no_of_vpath; i++)
1521 vxge_vpath_intr_enable(vdev, i);
1522
1523 vxge_hw_device_intr_enable(vdev->devh);
1524
1525 smp_wmb();
1526
1527 /* Indicate card up */
1528 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1529
1530 /* Get the traffic to flow through the vpaths */
1531 for (i = 0; i < vdev->no_of_vpath; i++) {
1532 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1533 smp_wmb();
1534 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1535 }
1536
d03848e0 1537 netif_tx_wake_all_queues(vdev->ndev);
703da5a1
RV		 1538 }
1539
1540out:
1541 vxge_debug_entryexit(VXGE_TRACE,
1542 "%s:%d Exiting...", __func__, __LINE__);
1543
1544 /* Indicate reset done */
1545 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1546 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1547 return ret;
1548}
1549
1550/*
1551 * vxge_reset
1552 * @vdev: pointer to ll device
1553 *
1554 * driver may reset the chip on events of serr, eccerr, etc
1555 */
1556int vxge_reset(struct vxgedev *vdev)
1557{
7adf7d1b 1558 return do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
703da5a1
RV		 1559}
1560
1561/**
1562 * vxge_poll - Receive handler when Receive Polling is used.
1563 * @dev: pointer to the device structure.
1564 * @budget: Number of packets budgeted to be processed in this iteration.
1565 *
1566 * This function comes into picture only if Receive side is being handled
1567 * through polling (called NAPI in linux). It mostly does what the normal
1568 * Rx interrupt handler does in terms of descriptor and packet processing
1569 * but not in an interrupt context. Also it will process a specified number
1570 * of packets at most in one iteration. This value is passed down by the
1571 * kernel as the function argument 'budget'.
1572 */
1573static int vxge_poll_msix(struct napi_struct *napi, int budget)
1574{
1575 struct vxge_ring *ring =
1576 container_of(napi, struct vxge_ring, napi);
1577 int budget_org = budget;
1578 ring->budget = budget;
1579
1580 vxge_hw_vpath_poll_rx(ring->handle);
1581
1582 if (ring->pkts_processed < budget_org) {
1583 napi_complete(napi);
1584 /* Re enable the Rx interrupts for the vpath */
1585 vxge_hw_channel_msix_unmask(
1586 (struct __vxge_hw_channel *)ring->handle,
1587 ring->rx_vector_no);
1588 }
1589
1590 return ring->pkts_processed;
1591}
1592
1593static int vxge_poll_inta(struct napi_struct *napi, int budget)
1594{
1595 struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1596 int pkts_processed = 0;
1597 int i;
1598 int budget_org = budget;
1599 struct vxge_ring *ring;
1600
1601 struct __vxge_hw_device *hldev = (struct __vxge_hw_device *)
1602 pci_get_drvdata(vdev->pdev);
1603
1604 for (i = 0; i < vdev->no_of_vpath; i++) {
1605 ring = &vdev->vpaths[i].ring;
1606 ring->budget = budget;
1607 vxge_hw_vpath_poll_rx(ring->handle);
1608 pkts_processed += ring->pkts_processed;
1609 budget -= ring->pkts_processed;
1610 if (budget <= 0)
1611 break;
1612 }
1613
1614 VXGE_COMPLETE_ALL_TX(vdev);
1615
1616 if (pkts_processed < budget_org) {
1617 napi_complete(napi);
1618 /* Re enable the Rx interrupts for the ring */
1619 vxge_hw_device_unmask_all(hldev);
1620 vxge_hw_device_flush_io(hldev);
1621 }
1622
1623 return pkts_processed;
1624}
1625
1626#ifdef CONFIG_NET_POLL_CONTROLLER
1627/**
1628 * vxge_netpoll - netpoll event handler entry point
1629 * @dev : pointer to the device structure.
1630 * Description:
1631 * This function will be called by upper layer to check for events on the
1632 * interface in situations where interrupts are disabled. It is used for
1633 * specific in-kernel networking tasks, such as remote consoles and kernel
1634 * debugging over the network (example netdump in RedHat).
1635 */
1636static void vxge_netpoll(struct net_device *dev)
1637{
1638 struct __vxge_hw_device *hldev;
1639 struct vxgedev *vdev;
1640
1641 vdev = (struct vxgedev *)netdev_priv(dev);
1642 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
1643
1644 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1645
1646 if (pci_channel_offline(vdev->pdev))
1647 return;
1648
1649 disable_irq(dev->irq);
1650 vxge_hw_device_clear_tx_rx(hldev);
1651
1652 vxge_hw_device_clear_tx_rx(hldev);
1653 VXGE_COMPLETE_ALL_RX(vdev);
1654 VXGE_COMPLETE_ALL_TX(vdev);
1655
1656 enable_irq(dev->irq);
1657
1658 vxge_debug_entryexit(VXGE_TRACE,
1659 "%s:%d Exiting...", __func__, __LINE__);
703da5a1
RV		 1660}
1661#endif
1662
1663/* RTH configuration */
1664static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1665{
1666 enum vxge_hw_status status = VXGE_HW_OK;
1667 struct vxge_hw_rth_hash_types hash_types;
1668 u8 itable[256] = {0}; /* indirection table */
1669 u8 mtable[256] = {0}; /* CPU to vpath mapping */
1670 int index;
1671
1672 /*
1673 * Filling
1674 * - itable with bucket numbers
1675 * - mtable with bucket-to-vpath mapping
1676 */
1677 for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1678 itable[index] = index;
1679 mtable[index] = index % vdev->no_of_vpath;
1680 }
1681
1682 /* Fill RTH hash types */
1683 hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4;
1684 hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4;
1685 hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6;
1686 hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6;
1687 hash_types.hash_type_tcpipv6ex_en =
1688 vdev->config.rth_hash_type_tcpipv6ex;
1689 hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex;
1690
1691 /* set indirection table, bucket-to-vpath mapping */
1692 status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1693 vdev->no_of_vpath,
1694 mtable, itable,
1695 vdev->config.rth_bkt_sz);
1696 if (status != VXGE_HW_OK) {
1697 vxge_debug_init(VXGE_ERR,
1698 "RTH indirection table configuration failed "
1699 "for vpath:%d", vdev->vpaths[0].device_id);
1700 return status;
1701 }
1702
1703 /*
1704 * Because the itable_set() method uses the active_table field
1705 * for the target virtual path the RTH config should be updated
1706 * for all VPATHs. The h/w only uses the lowest numbered VPATH
1707 * when steering frames.
1708 */
1709 for (index = 0; index < vdev->no_of_vpath; index++) {
1710 status = vxge_hw_vpath_rts_rth_set(
1711 vdev->vpaths[index].handle,
1712 vdev->config.rth_algorithm,
1713 &hash_types,
1714 vdev->config.rth_bkt_sz);
1715
1716 if (status != VXGE_HW_OK) {
1717 vxge_debug_init(VXGE_ERR,
1718 "RTH configuration failed for vpath:%d",
1719 vdev->vpaths[index].device_id);
1720 return status;
1721 }
1722 }
1723
1724 return status;
1725}
1726
1727int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1728{
1729 struct vxge_mac_addrs *new_mac_entry;
1730 u8 *mac_address = NULL;
1731
1732 if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1733 return TRUE;
1734
1735 new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1736 if (!new_mac_entry) {
1737 vxge_debug_mem(VXGE_ERR,
1738 "%s: memory allocation failed",
1739 VXGE_DRIVER_NAME);
1740 return FALSE;
1741 }
1742
1743 list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1744
1745 /* Copy the new mac address to the list */
1746 mac_address = (u8 *)&new_mac_entry->macaddr;
1747 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1748
1749 new_mac_entry->state = mac->state;
1750 vpath->mac_addr_cnt++;
1751
1752 /* Is this a multicast address */
1753 if (0x01 & mac->macaddr[0])
1754 vpath->mcast_addr_cnt++;
1755
1756 return TRUE;
1757}
1758
1759/* Add a mac address to DA table */
1760enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1761{
1762 enum vxge_hw_status status = VXGE_HW_OK;
1763 struct vxge_vpath *vpath;
1764 enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1765
1766 if (0x01 & mac->macaddr[0]) /* multicast address */
1767 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1768 else
1769 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1770
1771 vpath = &vdev->vpaths[mac->vpath_no];
1772 status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1773 mac->macmask, duplicate_mode);
1774 if (status != VXGE_HW_OK) {
1775 vxge_debug_init(VXGE_ERR,
1776 "DA config add entry failed for vpath:%d",
1777 vpath->device_id);
1778 } else
1779 if (FALSE == vxge_mac_list_add(vpath, mac))
1780 status = -EPERM;
1781
1782 return status;
1783}
1784
1785int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1786{
1787 struct list_head *entry, *next;
1788 u64 del_mac = 0;
1789 u8 *mac_address = (u8 *) (&del_mac);
1790
1791 /* Copy the mac address to delete from the list */
1792 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1793
1794 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1795 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1796 list_del(entry);
1797 kfree((struct vxge_mac_addrs *)entry);
1798 vpath->mac_addr_cnt--;
1799
1800 /* Is this a multicast address */
1801 if (0x01 & mac->macaddr[0])
1802 vpath->mcast_addr_cnt--;
1803 return TRUE;
1804 }
1805 }
1806
1807 return FALSE;
1808}
1809/* delete a mac address from DA table */
1810enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1811{
1812 enum vxge_hw_status status = VXGE_HW_OK;
1813 struct vxge_vpath *vpath;
1814
1815 vpath = &vdev->vpaths[mac->vpath_no];
1816 status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1817 mac->macmask);
1818 if (status != VXGE_HW_OK) {
1819 vxge_debug_init(VXGE_ERR,
1820 "DA config delete entry failed for vpath:%d",
1821 vpath->device_id);
1822 } else
1823 vxge_mac_list_del(vpath, mac);
1824 return status;
1825}
1826
1827/* list all mac addresses from DA table */
1828enum vxge_hw_status
1829static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1830 struct macInfo *mac)
1831{
1832 enum vxge_hw_status status = VXGE_HW_OK;
1833 unsigned char macmask[ETH_ALEN];
1834 unsigned char macaddr[ETH_ALEN];
1835
1836 status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1837 macaddr, macmask);
1838 if (status != VXGE_HW_OK) {
1839 vxge_debug_init(VXGE_ERR,
1840 "DA config list entry failed for vpath:%d",
1841 vpath->device_id);
1842 return status;
1843 }
1844
1845 while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1846
1847 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1848 macaddr, macmask);
1849 if (status != VXGE_HW_OK)
1850 break;
1851 }
1852
1853 return status;
1854}
1855
1856/* Store all vlan ids from the list to the vid table */
1857enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1858{
1859 enum vxge_hw_status status = VXGE_HW_OK;
1860 struct vxgedev *vdev = vpath->vdev;
1861 u16 vid;
1862
1863 if (vdev->vlgrp && vpath->is_open) {
1864
1865 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1866 if (!vlan_group_get_device(vdev->vlgrp, vid))
1867 continue;
1868 /* Add these vlan to the vid table */
1869 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1870 }
1871 }
1872
1873 return status;
1874}
1875
1876/* Store all mac addresses from the list to the DA table */
1877enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1878{
1879 enum vxge_hw_status status = VXGE_HW_OK;
1880 struct macInfo mac_info;
1881 u8 *mac_address = NULL;
1882 struct list_head *entry, *next;
1883
1884 memset(&mac_info, 0, sizeof(struct macInfo));
1885
1886 if (vpath->is_open) {
1887
1888 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1889 mac_address =
1890 (u8 *)&
1891 ((struct vxge_mac_addrs *)entry)->macaddr;
1892 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1893 ((struct vxge_mac_addrs *)entry)->state =
1894 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1895 /* does this mac address already exist in da table? */
1896 status = vxge_search_mac_addr_in_da_table(vpath,
1897 &mac_info);
1898 if (status != VXGE_HW_OK) {
1899 /* Add this mac address to the DA table */
1900 status = vxge_hw_vpath_mac_addr_add(
1901 vpath->handle, mac_info.macaddr,
1902 mac_info.macmask,
1903 VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1904 if (status != VXGE_HW_OK) {
1905 vxge_debug_init(VXGE_ERR,
1906 "DA add entry failed for vpath:%d",
1907 vpath->device_id);
1908 ((struct vxge_mac_addrs *)entry)->state
1909 = VXGE_LL_MAC_ADDR_IN_LIST;
1910 }
1911 }
1912 }
1913 }
1914
1915 return status;
1916}
1917
1918/* reset vpaths */
1919enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1920{
703da5a1 1921 enum vxge_hw_status status = VXGE_HW_OK;
7adf7d1b
JM		 1922 struct vxge_vpath *vpath;
1923 int i;
703da5a1 1924
7adf7d1b
JM		 1925 for (i = 0; i < vdev->no_of_vpath; i++) {
1926 vpath = &vdev->vpaths[i];
1927 if (vpath->handle) {
1928 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
703da5a1
RV		 1929 if (is_vxge_card_up(vdev) &&
1930 vxge_hw_vpath_recover_from_reset(
7adf7d1b 1931 vpath->handle) != VXGE_HW_OK) {
703da5a1
RV		 1932 vxge_debug_init(VXGE_ERR,
1933 "vxge_hw_vpath_recover_"
1934 "from_reset failed for vpath: "
1935 "%d", i);
1936 return status;
1937 }
1938 } else {
1939 vxge_debug_init(VXGE_ERR,
1940 "vxge_hw_vpath_reset failed for "
1941 "vpath:%d", i);
1942 return status;
1943 }
1944 }
7adf7d1b
JM		 1945 }
1946
703da5a1
RV		 1947 return status;
1948}
1949
1950/* close vpaths */
1951void vxge_close_vpaths(struct vxgedev *vdev, int index)
1952{
7adf7d1b 1953 struct vxge_vpath *vpath;
703da5a1 1954 int i;
7adf7d1b 1955
703da5a1 1956 for (i = index; i < vdev->no_of_vpath; i++) {
7adf7d1b
JM		 1957 vpath = &vdev->vpaths[i];
1958
1959 if (vpath->handle && vpath->is_open) {
1960 vxge_hw_vpath_close(vpath->handle);
703da5a1
RV		 1961 vdev->stats.vpaths_open--;
1962 }
7adf7d1b
JM		 1963 vpath->is_open = 0;
1964 vpath->handle = NULL;
703da5a1
RV		 1965 }
1966}
1967
1968/* open vpaths */
1969int vxge_open_vpaths(struct vxgedev *vdev)
1970{
7adf7d1b 1971 struct vxge_hw_vpath_attr attr;
703da5a1 1972 enum vxge_hw_status status;
7adf7d1b 1973 struct vxge_vpath *vpath;
703da5a1 1974 u32 vp_id = 0;
7adf7d1b 1975 int i;
703da5a1
RV		 1976
1977 for (i = 0; i < vdev->no_of_vpath; i++) {
7adf7d1b
JM		 1978 vpath = &vdev->vpaths[i];
1979
1980 vxge_assert(vpath->is_configured);
1981 attr.vp_id = vpath->device_id;
703da5a1
RV		 1982 attr.fifo_attr.callback = vxge_xmit_compl;
1983 attr.fifo_attr.txdl_term = vxge_tx_term;
1984 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
7adf7d1b 1985 attr.fifo_attr.userdata = &vpath->fifo;
703da5a1
RV		 1986
1987 attr.ring_attr.callback = vxge_rx_1b_compl;
1988 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
1989 attr.ring_attr.rxd_term = vxge_rx_term;
1990 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
7adf7d1b 1991 attr.ring_attr.userdata = &vpath->ring;
703da5a1 1992
7adf7d1b
JM		 1993 vpath->ring.ndev = vdev->ndev;
1994 vpath->ring.pdev = vdev->pdev;
1995 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
703da5a1 1996 if (status == VXGE_HW_OK) {
7adf7d1b 1997 vpath->fifo.handle =
703da5a1 1998 (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
7adf7d1b 1999 vpath->ring.handle =
703da5a1 2000 (struct __vxge_hw_ring *)attr.ring_attr.userdata;
7adf7d1b 2001 vpath->fifo.tx_steering_type =
703da5a1 2002 vdev->config.tx_steering_type;
7adf7d1b
JM		 2003 vpath->fifo.ndev = vdev->ndev;
2004 vpath->fifo.pdev = vdev->pdev;
98f45da2
JM		 2005 if (vdev->config.tx_steering_type)
2006 vpath->fifo.txq =
2007 netdev_get_tx_queue(vdev->ndev, i);
2008 else
2009 vpath->fifo.txq =
2010 netdev_get_tx_queue(vdev->ndev, 0);
7adf7d1b 2011 vpath->fifo.indicate_max_pkts =
703da5a1 2012 vdev->config.fifo_indicate_max_pkts;
7adf7d1b
JM		 2013 vpath->ring.rx_vector_no = 0;
2014 vpath->ring.rx_csum = vdev->rx_csum;
2015 vpath->is_open = 1;
2016 vdev->vp_handles[i] = vpath->handle;
2017 vpath->ring.gro_enable = vdev->config.gro_enable;
2018 vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
703da5a1
RV		 2019 vdev->stats.vpaths_open++;
2020 } else {
2021 vdev->stats.vpath_open_fail++;
2022 vxge_debug_init(VXGE_ERR,
2023 "%s: vpath: %d failed to open "
2024 "with status: %d",
7adf7d1b 2025 vdev->ndev->name, vpath->device_id,
703da5a1
RV		 2026 status);
2027 vxge_close_vpaths(vdev, 0);
2028 return -EPERM;
2029 }
2030
7adf7d1b 2031 vp_id = vpath->handle->vpath->vp_id;
703da5a1
RV		 2032 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2033 }
2034 return VXGE_HW_OK;
2035}
2036
2037/*
2038 * vxge_isr_napi
2039 * @irq: the irq of the device.
2040 * @dev_id: a void pointer to the hldev structure of the Titan device
2041 * @ptregs: pointer to the registers pushed on the stack.
2042 *
2043 * This function is the ISR handler of the device when napi is enabled. It
2044 * identifies the reason for the interrupt and calls the relevant service
2045 * routines.
2046 */
2047static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2048{
703da5a1 2049 struct net_device *dev;
a5d165b5 2050 struct __vxge_hw_device *hldev;
703da5a1
RV		 2051 u64 reason;
2052 enum vxge_hw_status status;
a5d165b5 2053 struct vxgedev *vdev = (struct vxgedev *) dev_id;;
703da5a1
RV		 2054
2055 vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2056
a5d165b5
SH		 2057 dev = vdev->ndev;
2058 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
703da5a1
RV		 2059
2060 if (pci_channel_offline(vdev->pdev))
2061 return IRQ_NONE;
2062
2063 if (unlikely(!is_vxge_card_up(vdev)))
2064 return IRQ_NONE;
2065
2066 status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2067 &reason);
2068 if (status == VXGE_HW_OK) {
2069 vxge_hw_device_mask_all(hldev);
2070
2071 if (reason &
2072 VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2073 vdev->vpaths_deployed >>
2074 (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2075
2076 vxge_hw_device_clear_tx_rx(hldev);
2077 napi_schedule(&vdev->napi);
2078 vxge_debug_intr(VXGE_TRACE,
2079 "%s:%d Exiting...", __func__, __LINE__);
2080 return IRQ_HANDLED;
2081 } else
2082 vxge_hw_device_unmask_all(hldev);
2083 } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2084 (status == VXGE_HW_ERR_CRITICAL) ||
2085 (status == VXGE_HW_ERR_FIFO))) {
2086 vxge_hw_device_mask_all(hldev);
2087 vxge_hw_device_flush_io(hldev);
2088 return IRQ_HANDLED;
2089 } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2090 return IRQ_HANDLED;
2091
2092 vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__);
2093 return IRQ_NONE;
2094}
2095
2096#ifdef CONFIG_PCI_MSI
2097
2098static irqreturn_t
2099vxge_tx_msix_handle(int irq, void *dev_id)
2100{
2101 struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2102
2103 VXGE_COMPLETE_VPATH_TX(fifo);
2104
2105 return IRQ_HANDLED;
2106}
2107
2108static irqreturn_t
2109vxge_rx_msix_napi_handle(int irq, void *dev_id)
2110{
2111 struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2112
2113 /* MSIX_IDX for Rx is 1 */
2114 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2115 ring->rx_vector_no);
2116
2117 napi_schedule(&ring->napi);
2118 return IRQ_HANDLED;
2119}
2120
2121static irqreturn_t
2122vxge_alarm_msix_handle(int irq, void *dev_id)
2123{
2124 int i;
2125 enum vxge_hw_status status;
2126 struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2127 struct vxgedev *vdev = vpath->vdev;
b59c9457
SH		 2128 int msix_id = (vpath->handle->vpath->vp_id *
2129 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
703da5a1
RV		 2130
2131 for (i = 0; i < vdev->no_of_vpath; i++) {
b59c9457 2132 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
703da5a1
RV		 2133
2134 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2135 vdev->exec_mode);
2136 if (status == VXGE_HW_OK) {
2137
2138 vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
b59c9457 2139 msix_id);
703da5a1
RV		 2140 continue;
2141 }
2142 vxge_debug_intr(VXGE_ERR,
2143 "%s: vxge_hw_vpath_alarm_process failed %x ",
2144 VXGE_DRIVER_NAME, status);
2145 }
2146 return IRQ_HANDLED;
2147}
2148
2149static int vxge_alloc_msix(struct vxgedev *vdev)
2150{
2151 int j, i, ret = 0;
b59c9457 2152 int msix_intr_vect = 0, temp;
703da5a1
RV		 2153 vdev->intr_cnt = 0;
2154
b59c9457 2155start:
703da5a1
RV		 2156 /* Tx/Rx MSIX Vectors count */
2157 vdev->intr_cnt = vdev->no_of_vpath * 2;
2158
2159 /* Alarm MSIX Vectors count */
2160 vdev->intr_cnt++;
2161
b59c9457 2162 vdev->entries = kzalloc(vdev->intr_cnt * sizeof(struct msix_entry),
703da5a1
RV		 2163 GFP_KERNEL);
2164 if (!vdev->entries) {
2165 vxge_debug_init(VXGE_ERR,
2166 "%s: memory allocation failed",
2167 VXGE_DRIVER_NAME);
cc413d90
MS		 2168 ret = -ENOMEM;
2169 goto alloc_entries_failed;
703da5a1
RV		 2170 }
2171
b59c9457
SH		 2172 vdev->vxge_entries =
2173 kzalloc(vdev->intr_cnt * sizeof(struct vxge_msix_entry),
2174 GFP_KERNEL);
703da5a1
RV		 2175 if (!vdev->vxge_entries) {
2176 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2177 VXGE_DRIVER_NAME);
cc413d90
MS		 2178 ret = -ENOMEM;
2179 goto alloc_vxge_entries_failed;
703da5a1
RV		 2180 }
2181
b59c9457 2182 for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
703da5a1
RV		 2183
2184 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2185
2186 /* Initialize the fifo vector */
2187 vdev->entries[j].entry = msix_intr_vect;
2188 vdev->vxge_entries[j].entry = msix_intr_vect;
2189 vdev->vxge_entries[j].in_use = 0;
2190 j++;
2191
2192 /* Initialize the ring vector */
2193 vdev->entries[j].entry = msix_intr_vect + 1;
2194 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2195 vdev->vxge_entries[j].in_use = 0;
2196 j++;
2197 }
2198
2199 /* Initialize the alarm vector */
b59c9457
SH		 2200 vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2201 vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
703da5a1
RV		 2202 vdev->vxge_entries[j].in_use = 0;
2203
b59c9457 2204 ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
b59c9457 2205 if (ret > 0) {
703da5a1
RV		 2206 vxge_debug_init(VXGE_ERR,
2207 "%s: MSI-X enable failed for %d vectors, ret: %d",
b59c9457 2208 VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
cc413d90
MS		 2209 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2210 ret = -ENODEV;
2211 goto enable_msix_failed;
2212 }
2213
703da5a1
RV		 2214 kfree(vdev->entries);
2215 kfree(vdev->vxge_entries);
2216 vdev->entries = NULL;
2217 vdev->vxge_entries = NULL;
b59c9457
SH		 2218 /* Try with less no of vector by reducing no of vpaths count */
2219 temp = (ret - 1)/2;
2220 vxge_close_vpaths(vdev, temp);
2221 vdev->no_of_vpath = temp;
2222 goto start;
cc413d90
MS		 2223 } else if (ret < 0) {
2224 ret = -ENODEV;
2225 goto enable_msix_failed;
2226 }
703da5a1 2227 return 0;
cc413d90
MS		 2228
2229enable_msix_failed:
2230 kfree(vdev->vxge_entries);
2231alloc_vxge_entries_failed:
2232 kfree(vdev->entries);
2233alloc_entries_failed:
2234 return ret;
703da5a1
RV		 2235}
2236
2237static int vxge_enable_msix(struct vxgedev *vdev)
2238{
2239
2240 int i, ret = 0;
703da5a1 2241 /* 0 - Tx, 1 - Rx */
b59c9457
SH		 2242 int tim_msix_id[4] = {0, 1, 0, 0};
2243
703da5a1
RV		 2244 vdev->intr_cnt = 0;
2245
2246 /* allocate msix vectors */
2247 ret = vxge_alloc_msix(vdev);
2248 if (!ret) {
703da5a1 2249 for (i = 0; i < vdev->no_of_vpath; i++) {
7adf7d1b 2250 struct vxge_vpath *vpath = &vdev->vpaths[i];
703da5a1 2251
7adf7d1b
JM		 2252 /* If fifo or ring are not enabled, the MSIX vector for
2253 * it should be set to 0.
2254 */
2255 vpath->ring.rx_vector_no = (vpath->device_id *
2256 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
703da5a1 2257
7adf7d1b
JM		 2258 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2259 VXGE_ALARM_MSIX_ID);
703da5a1
RV		 2260 }
2261 }
2262
2263 return ret;
2264}
2265
2266static void vxge_rem_msix_isr(struct vxgedev *vdev)
2267{
2268 int intr_cnt;
2269
b59c9457 2270 for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
703da5a1
RV		 2271 intr_cnt++) {
2272 if (vdev->vxge_entries[intr_cnt].in_use) {
2273 synchronize_irq(vdev->entries[intr_cnt].vector);
2274 free_irq(vdev->entries[intr_cnt].vector,
2275 vdev->vxge_entries[intr_cnt].arg);
2276 vdev->vxge_entries[intr_cnt].in_use = 0;
2277 }
2278 }
2279
2280 kfree(vdev->entries);
2281 kfree(vdev->vxge_entries);
2282 vdev->entries = NULL;
2283 vdev->vxge_entries = NULL;
2284
2285 if (vdev->config.intr_type == MSI_X)
2286 pci_disable_msix(vdev->pdev);
2287}
2288#endif
2289
2290static void vxge_rem_isr(struct vxgedev *vdev)
2291{
2292 struct __vxge_hw_device *hldev;
2293 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2294
2295#ifdef CONFIG_PCI_MSI
2296 if (vdev->config.intr_type == MSI_X) {
2297 vxge_rem_msix_isr(vdev);
2298 } else
2299#endif
2300 if (vdev->config.intr_type == INTA) {
2301 synchronize_irq(vdev->pdev->irq);
a5d165b5 2302 free_irq(vdev->pdev->irq, vdev);
703da5a1
RV		 2303 }
2304}
2305
2306static int vxge_add_isr(struct vxgedev *vdev)
2307{
2308 int ret = 0;
703da5a1
RV		 2309#ifdef CONFIG_PCI_MSI
2310 int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
703da5a1
RV		 2311 int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2312
2313 if (vdev->config.intr_type == MSI_X)
2314 ret = vxge_enable_msix(vdev);
2315
2316 if (ret) {
2317 vxge_debug_init(VXGE_ERR,
2318 "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
eb5f10c2
SH		 2319 vxge_debug_init(VXGE_ERR,
2320 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2321 vdev->config.intr_type = INTA;
703da5a1
RV		 2322 }
2323
2324 if (vdev->config.intr_type == MSI_X) {
2325 for (intr_idx = 0;
2326 intr_idx < (vdev->no_of_vpath *
2327 VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2328
2329 msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2330 irq_req = 0;
2331
2332 switch (msix_idx) {
2333 case 0:
2334 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
b59c9457
SH		 2335 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2336 vdev->ndev->name,
2337 vdev->entries[intr_cnt].entry,
2338 pci_fun, vp_idx);
703da5a1
RV		 2339 ret = request_irq(
2340 vdev->entries[intr_cnt].vector,
2341 vxge_tx_msix_handle, 0,
2342 vdev->desc[intr_cnt],
2343 &vdev->vpaths[vp_idx].fifo);
2344 vdev->vxge_entries[intr_cnt].arg =
2345 &vdev->vpaths[vp_idx].fifo;
2346 irq_req = 1;
2347 break;
2348 case 1:
2349 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
b59c9457
SH		 2350 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2351 vdev->ndev->name,
2352 vdev->entries[intr_cnt].entry,
2353 pci_fun, vp_idx);
703da5a1
RV		 2354 ret = request_irq(
2355 vdev->entries[intr_cnt].vector,
2356 vxge_rx_msix_napi_handle,
2357 0,
2358 vdev->desc[intr_cnt],
2359 &vdev->vpaths[vp_idx].ring);
2360 vdev->vxge_entries[intr_cnt].arg =
2361 &vdev->vpaths[vp_idx].ring;
2362 irq_req = 1;
2363 break;
2364 }
2365
2366 if (ret) {
2367 vxge_debug_init(VXGE_ERR,
2368 "%s: MSIX - %d Registration failed",
2369 vdev->ndev->name, intr_cnt);
2370 vxge_rem_msix_isr(vdev);
eb5f10c2
SH		 2371 vdev->config.intr_type = INTA;
2372 vxge_debug_init(VXGE_ERR,
2373 "%s: Defaulting to INTA"
2374 , vdev->ndev->name);
703da5a1 2375 goto INTA_MODE;
703da5a1
RV		 2376 }
2377
2378 if (irq_req) {
2379 /* We requested for this msix interrupt */
2380 vdev->vxge_entries[intr_cnt].in_use = 1;
b59c9457
SH		 2381 msix_idx += vdev->vpaths[vp_idx].device_id *
2382 VXGE_HW_VPATH_MSIX_ACTIVE;
703da5a1
RV		 2383 vxge_hw_vpath_msix_unmask(
2384 vdev->vpaths[vp_idx].handle,
b59c9457 2385 msix_idx);
703da5a1
RV		 2386 intr_cnt++;
2387 }
2388
2389 /* Point to next vpath handler */
8e95a202
JP		 2390 if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2391 (vp_idx < (vdev->no_of_vpath - 1)))
2392 vp_idx++;
703da5a1
RV		 2393 }
2394
b59c9457 2395 intr_cnt = vdev->no_of_vpath * 2;
703da5a1 2396 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
b59c9457
SH		 2397 "%s:vxge:MSI-X %d - Alarm - fn:%d",
2398 vdev->ndev->name,
2399 vdev->entries[intr_cnt].entry,
2400 pci_fun);
703da5a1
RV		 2401 /* For Alarm interrupts */
2402 ret = request_irq(vdev->entries[intr_cnt].vector,
2403 vxge_alarm_msix_handle, 0,
2404 vdev->desc[intr_cnt],
b59c9457 2405 &vdev->vpaths[0]);
703da5a1
RV		 2406 if (ret) {
2407 vxge_debug_init(VXGE_ERR,
2408 "%s: MSIX - %d Registration failed",
2409 vdev->ndev->name, intr_cnt);
2410 vxge_rem_msix_isr(vdev);
eb5f10c2
SH		 2411 vdev->config.intr_type = INTA;
2412 vxge_debug_init(VXGE_ERR,
2413 "%s: Defaulting to INTA",
2414 vdev->ndev->name);
703da5a1 2415 goto INTA_MODE;
703da5a1
RV		 2416 }
2417
b59c9457
SH		 2418 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2419 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
703da5a1 2420 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
b59c9457 2421 msix_idx);
703da5a1 2422 vdev->vxge_entries[intr_cnt].in_use = 1;
b59c9457 2423 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
703da5a1
RV		 2424 }
2425INTA_MODE:
2426#endif
703da5a1
RV		 2427
2428 if (vdev->config.intr_type == INTA) {
b59c9457
SH		 2429 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2430 "%s:vxge:INTA", vdev->ndev->name);
eb5f10c2
SH		 2431 vxge_hw_device_set_intr_type(vdev->devh,
2432 VXGE_HW_INTR_MODE_IRQLINE);
2433 vxge_hw_vpath_tti_ci_set(vdev->devh,
2434 vdev->vpaths[0].device_id);
703da5a1
RV		 2435 ret = request_irq((int) vdev->pdev->irq,
2436 vxge_isr_napi,
a5d165b5 2437 IRQF_SHARED, vdev->desc[0], vdev);
703da5a1
RV		 2438 if (ret) {
2439 vxge_debug_init(VXGE_ERR,
2440 "%s %s-%d: ISR registration failed",
2441 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2442 return -ENODEV;
2443 }
2444 vxge_debug_init(VXGE_TRACE,
2445 "new %s-%d line allocated",
2446 "IRQ", vdev->pdev->irq);
2447 }
2448
2449 return VXGE_HW_OK;
2450}
2451
2452static void vxge_poll_vp_reset(unsigned long data)
2453{
2454 struct vxgedev *vdev = (struct vxgedev *)data;
2455 int i, j = 0;
2456
2457 for (i = 0; i < vdev->no_of_vpath; i++) {
2458 if (test_bit(i, &vdev->vp_reset)) {
2459 vxge_reset_vpath(vdev, i);
2460 j++;
2461 }
2462 }
2463 if (j && (vdev->config.intr_type != MSI_X)) {
2464 vxge_hw_device_unmask_all(vdev->devh);
2465 vxge_hw_device_flush_io(vdev->devh);
2466 }
2467
2468 mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2469}
2470
2471static void vxge_poll_vp_lockup(unsigned long data)
2472{
2473 struct vxgedev *vdev = (struct vxgedev *)data;
703da5a1 2474 enum vxge_hw_status status = VXGE_HW_OK;
7adf7d1b
JM		 2475 struct vxge_vpath *vpath;
2476 struct vxge_ring *ring;
2477 int i;
703da5a1
RV		 2478
2479 for (i = 0; i < vdev->no_of_vpath; i++) {
2480 ring = &vdev->vpaths[i].ring;
2481 /* Did this vpath received any packets */
2482 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2483 status = vxge_hw_vpath_check_leak(ring->handle);
2484
2485 /* Did it received any packets last time */
2486 if ((VXGE_HW_FAIL == status) &&
2487 (VXGE_HW_FAIL == ring->last_status)) {
2488
2489 /* schedule vpath reset */
2490 if (!test_and_set_bit(i, &vdev->vp_reset)) {
7adf7d1b 2491 vpath = &vdev->vpaths[i];
703da5a1
RV		 2492
2493 /* disable interrupts for this vpath */
2494 vxge_vpath_intr_disable(vdev, i);
2495
2496 /* stop the queue for this vpath */
98f45da2 2497 netif_tx_stop_queue(vpath->fifo.txq);
703da5a1
RV		 2498 continue;
2499 }
2500 }
2501 }
2502 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2503 ring->last_status = status;
2504 }
2505
2506 /* Check every 1 milli second */
2507 mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2508}
2509
2510/**
2511 * vxge_open
2512 * @dev: pointer to the device structure.
2513 *
2514 * This function is the open entry point of the driver. It mainly calls a
2515 * function to allocate Rx buffers and inserts them into the buffer
2516 * descriptors and then enables the Rx part of the NIC.
2517 * Return value: '0' on success and an appropriate (-)ve integer as
2518 * defined in errno.h file on failure.
2519 */
2520int
2521vxge_open(struct net_device *dev)
2522{
2523 enum vxge_hw_status status;
2524 struct vxgedev *vdev;
2525 struct __vxge_hw_device *hldev;
7adf7d1b 2526 struct vxge_vpath *vpath;
703da5a1
RV		 2527 int ret = 0;
2528 int i;
2529 u64 val64, function_mode;
2530 vxge_debug_entryexit(VXGE_TRACE,
2531 "%s: %s:%d", dev->name, __func__, __LINE__);
2532
2533 vdev = (struct vxgedev *)netdev_priv(dev);
2534 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2535 function_mode = vdev->config.device_hw_info.function_mode;
2536
2537 /* make sure you have link off by default every time Nic is
2538 * initialized */
2539 netif_carrier_off(dev);
2540
703da5a1
RV		 2541 /* Open VPATHs */
2542 status = vxge_open_vpaths(vdev);
2543 if (status != VXGE_HW_OK) {
2544 vxge_debug_init(VXGE_ERR,
2545 "%s: fatal: Vpath open failed", vdev->ndev->name);
2546 ret = -EPERM;
2547 goto out0;
2548 }
2549
2550 vdev->mtu = dev->mtu;
2551
2552 status = vxge_add_isr(vdev);
2553 if (status != VXGE_HW_OK) {
2554 vxge_debug_init(VXGE_ERR,
2555 "%s: fatal: ISR add failed", dev->name);
2556 ret = -EPERM;
2557 goto out1;
2558 }
2559
703da5a1
RV		 2560 if (vdev->config.intr_type != MSI_X) {
2561 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2562 vdev->config.napi_weight);
2563 napi_enable(&vdev->napi);
7adf7d1b
JM		 2564 for (i = 0; i < vdev->no_of_vpath; i++) {
2565 vpath = &vdev->vpaths[i];
2566 vpath->ring.napi_p = &vdev->napi;
2567 }
703da5a1
RV		 2568 } else {
2569 for (i = 0; i < vdev->no_of_vpath; i++) {
7adf7d1b
JM		 2570 vpath = &vdev->vpaths[i];
2571 netif_napi_add(dev, &vpath->ring.napi,
703da5a1 2572 vxge_poll_msix, vdev->config.napi_weight);
7adf7d1b
JM		 2573 napi_enable(&vpath->ring.napi);
2574 vpath->ring.napi_p = &vpath->ring.napi;
703da5a1
RV		 2575 }
2576 }
2577
2578 /* configure RTH */
2579 if (vdev->config.rth_steering) {
2580 status = vxge_rth_configure(vdev);
2581 if (status != VXGE_HW_OK) {
2582 vxge_debug_init(VXGE_ERR,
2583 "%s: fatal: RTH configuration failed",
2584 dev->name);
2585 ret = -EPERM;
2586 goto out2;
2587 }
2588 }
2589
2590 for (i = 0; i < vdev->no_of_vpath; i++) {
7adf7d1b
JM		 2591 vpath = &vdev->vpaths[i];
2592
703da5a1 2593 /* set initial mtu before enabling the device */
7adf7d1b 2594 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
703da5a1
RV		 2595 if (status != VXGE_HW_OK) {
2596 vxge_debug_init(VXGE_ERR,
2597 "%s: fatal: can not set new MTU", dev->name);
2598 ret = -EPERM;
2599 goto out2;
2600 }
2601 }
2602
2603 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2604 vxge_debug_init(vdev->level_trace,
2605 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2606 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2607
7adf7d1b
JM		 2608 /* Restore the DA, VID table and also multicast and promiscuous mode
2609 * states
2610 */
2611 if (vdev->all_multi_flg) {
2612 for (i = 0; i < vdev->no_of_vpath; i++) {
2613 vpath = &vdev->vpaths[i];
2614 vxge_restore_vpath_mac_addr(vpath);
2615 vxge_restore_vpath_vid_table(vpath);
2616
2617 status = vxge_hw_vpath_mcast_enable(vpath->handle);
2618 if (status != VXGE_HW_OK)
2619 vxge_debug_init(VXGE_ERR,
2620 "%s:%d Enabling multicast failed",
2621 __func__, __LINE__);
2622 }
703da5a1
RV		 2623 }
2624
2625 /* Enable vpath to sniff all unicast/multicast traffic that not
2626 * addressed to them. We allow promiscous mode for PF only
2627 */
2628
2629 val64 = 0;
2630 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2631 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2632
2633 vxge_hw_mgmt_reg_write(vdev->devh,
2634 vxge_hw_mgmt_reg_type_mrpcim,
2635 0,
2636 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2637 rxmac_authorize_all_addr),
2638 val64);
2639
2640 vxge_hw_mgmt_reg_write(vdev->devh,
2641 vxge_hw_mgmt_reg_type_mrpcim,
2642 0,
2643 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2644 rxmac_authorize_all_vid),
2645 val64);
2646
2647 vxge_set_multicast(dev);
2648
2649 /* Enabling Bcast and mcast for all vpath */
2650 for (i = 0; i < vdev->no_of_vpath; i++) {
7adf7d1b
JM		 2651 vpath = &vdev->vpaths[i];
2652 status = vxge_hw_vpath_bcast_enable(vpath->handle);
703da5a1
RV		 2653 if (status != VXGE_HW_OK)
2654 vxge_debug_init(VXGE_ERR,
2655 "%s : Can not enable bcast for vpath "
2656 "id %d", dev->name, i);
2657 if (vdev->config.addr_learn_en) {
7adf7d1b 2658 status = vxge_hw_vpath_mcast_enable(vpath->handle);
703da5a1
RV		 2659 if (status != VXGE_HW_OK)
2660 vxge_debug_init(VXGE_ERR,
2661 "%s : Can not enable mcast for vpath "
2662 "id %d", dev->name, i);
2663 }
2664 }
2665
2666 vxge_hw_device_setpause_data(vdev->devh, 0,
2667 vdev->config.tx_pause_enable,
2668 vdev->config.rx_pause_enable);
2669
2670 if (vdev->vp_reset_timer.function == NULL)
2671 vxge_os_timer(vdev->vp_reset_timer,
2672 vxge_poll_vp_reset, vdev, (HZ/2));
2673
2674 if (vdev->vp_lockup_timer.function == NULL)
2675 vxge_os_timer(vdev->vp_lockup_timer,
2676 vxge_poll_vp_lockup, vdev, (HZ/2));
2677
2678 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2679
2680 smp_wmb();
2681
2682 if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2683 netif_carrier_on(vdev->ndev);
75f5e1c6 2684 netdev_notice(vdev->ndev, "Link Up\n");
703da5a1
RV		 2685 vdev->stats.link_up++;
2686 }
2687
2688 vxge_hw_device_intr_enable(vdev->devh);
2689
2690 smp_wmb();
2691
2692 for (i = 0; i < vdev->no_of_vpath; i++) {
7adf7d1b
JM		 2693 vpath = &vdev->vpaths[i];
2694
2695 vxge_hw_vpath_enable(vpath->handle);
703da5a1 2696 smp_wmb();
7adf7d1b 2697 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
703da5a1
RV		 2698 }
2699
d03848e0 2700 netif_tx_start_all_queues(vdev->ndev);
703da5a1
RV		 2701 goto out0;
2702
2703out2:
2704 vxge_rem_isr(vdev);
2705
2706 /* Disable napi */
2707 if (vdev->config.intr_type != MSI_X)
2708 napi_disable(&vdev->napi);
2709 else {
2710 for (i = 0; i < vdev->no_of_vpath; i++)
2711 napi_disable(&vdev->vpaths[i].ring.napi);
2712 }
2713
2714out1:
2715 vxge_close_vpaths(vdev, 0);
2716out0:
2717 vxge_debug_entryexit(VXGE_TRACE,
2718 "%s: %s:%d Exiting...",
2719 dev->name, __func__, __LINE__);
2720 return ret;
2721}
2722
2723/* Loop throught the mac address list and delete all the entries */
2724void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2725{
2726
2727 struct list_head *entry, *next;
2728 if (list_empty(&vpath->mac_addr_list))
2729 return;
2730
2731 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2732 list_del(entry);
2733 kfree((struct vxge_mac_addrs *)entry);
2734 }
2735}
2736
2737static void vxge_napi_del_all(struct vxgedev *vdev)
2738{
2739 int i;
2740 if (vdev->config.intr_type != MSI_X)
2741 netif_napi_del(&vdev->napi);
2742 else {
2743 for (i = 0; i < vdev->no_of_vpath; i++)
2744 netif_napi_del(&vdev->vpaths[i].ring.napi);
2745 }
703da5a1
RV		 2746}
2747
2748int do_vxge_close(struct net_device *dev, int do_io)
2749{
2750 enum vxge_hw_status status;
2751 struct vxgedev *vdev;
2752 struct __vxge_hw_device *hldev;
2753 int i;
2754 u64 val64, vpath_vector;
2755 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2756 dev->name, __func__, __LINE__);
2757
2758 vdev = (struct vxgedev *)netdev_priv(dev);
2759 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2760
bd9ee680
SH		 2761 if (unlikely(!is_vxge_card_up(vdev)))
2762 return 0;
2763
703da5a1
RV		 2764 /* If vxge_handle_crit_err task is executing,
2765 * wait till it completes. */
2766 while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2767 msleep(50);
2768
2769 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2770 if (do_io) {
2771 /* Put the vpath back in normal mode */
2772 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2773 status = vxge_hw_mgmt_reg_read(vdev->devh,
2774 vxge_hw_mgmt_reg_type_mrpcim,
2775 0,
2776 (ulong)offsetof(
2777 struct vxge_hw_mrpcim_reg,
2778 rts_mgr_cbasin_cfg),
2779 &val64);
2780
2781 if (status == VXGE_HW_OK) {
2782 val64 &= ~vpath_vector;
2783 status = vxge_hw_mgmt_reg_write(vdev->devh,
2784 vxge_hw_mgmt_reg_type_mrpcim,
2785 0,
2786 (ulong)offsetof(
2787 struct vxge_hw_mrpcim_reg,
2788 rts_mgr_cbasin_cfg),
2789 val64);
2790 }
2791
2792 /* Remove the function 0 from promiscous mode */
2793 vxge_hw_mgmt_reg_write(vdev->devh,
2794 vxge_hw_mgmt_reg_type_mrpcim,
2795 0,
2796 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2797 rxmac_authorize_all_addr),
2798 0);
2799
2800 vxge_hw_mgmt_reg_write(vdev->devh,
2801 vxge_hw_mgmt_reg_type_mrpcim,
2802 0,
2803 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2804 rxmac_authorize_all_vid),
2805 0);
2806
2807 smp_wmb();
2808 }
2809 del_timer_sync(&vdev->vp_lockup_timer);
2810
2811 del_timer_sync(&vdev->vp_reset_timer);
2812
2813 /* Disable napi */
2814 if (vdev->config.intr_type != MSI_X)
2815 napi_disable(&vdev->napi);
2816 else {
2817 for (i = 0; i < vdev->no_of_vpath; i++)
2818 napi_disable(&vdev->vpaths[i].ring.napi);
2819 }
2820
2821 netif_carrier_off(vdev->ndev);
75f5e1c6 2822 netdev_notice(vdev->ndev, "Link Down\n");
d03848e0 2823 netif_tx_stop_all_queues(vdev->ndev);
703da5a1
RV		 2824
2825 /* Note that at this point xmit() is stopped by upper layer */
2826 if (do_io)
2827 vxge_hw_device_intr_disable(vdev->devh);
2828
2829 mdelay(1000);
2830
2831 vxge_rem_isr(vdev);
2832
2833 vxge_napi_del_all(vdev);
2834
2835 if (do_io)
2836 vxge_reset_all_vpaths(vdev);
2837
2838 vxge_close_vpaths(vdev, 0);
2839
2840 vxge_debug_entryexit(VXGE_TRACE,
2841 "%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
2842
703da5a1
RV		 2843 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2844
2845 return 0;
2846}
2847
2848/**
2849 * vxge_close
2850 * @dev: device pointer.
2851 *
2852 * This is the stop entry point of the driver. It needs to undo exactly
2853 * whatever was done by the open entry point, thus it's usually referred to
2854 * as the close function.Among other things this function mainly stops the
2855 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2856 * Return value: '0' on success and an appropriate (-)ve integer as
2857 * defined in errno.h file on failure.
2858 */
2859int
2860vxge_close(struct net_device *dev)
2861{
2862 do_vxge_close(dev, 1);
2863 return 0;
2864}
2865
2866/**
2867 * vxge_change_mtu
2868 * @dev: net device pointer.
2869 * @new_mtu :the new MTU size for the device.
2870 *
2871 * A driver entry point to change MTU size for the device. Before changing
2872 * the MTU the device must be stopped.
2873 */
2874static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2875{
2876 struct vxgedev *vdev = netdev_priv(dev);
2877
2878 vxge_debug_entryexit(vdev->level_trace,
2879 "%s:%d", __func__, __LINE__);
2880 if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2881 vxge_debug_init(vdev->level_err,
2882 "%s: mtu size is invalid", dev->name);
2883 return -EPERM;
2884 }
2885
2886 /* check if device is down already */
2887 if (unlikely(!is_vxge_card_up(vdev))) {
2888 /* just store new value, will use later on open() */
2889 dev->mtu = new_mtu;
2890 vxge_debug_init(vdev->level_err,
2891 "%s", "device is down on MTU change");
2892 return 0;
2893 }
2894
2895 vxge_debug_init(vdev->level_trace,
2896 "trying to apply new MTU %d", new_mtu);
2897
2898 if (vxge_close(dev))
2899 return -EIO;
2900
2901 dev->mtu = new_mtu;
2902 vdev->mtu = new_mtu;
2903
2904 if (vxge_open(dev))
2905 return -EIO;
2906
2907 vxge_debug_init(vdev->level_trace,
2908 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2909
2910 vxge_debug_entryexit(vdev->level_trace,
2911 "%s:%d Exiting...", __func__, __LINE__);
2912
2913 return 0;
2914}
2915
2916/**
2917 * vxge_get_stats
2918 * @dev: pointer to the device structure
2919 *
2920 * Updates the device statistics structure. This function updates the device
2921 * statistics structure in the net_device structure and returns a pointer
2922 * to the same.
2923 */
2924static struct net_device_stats *
2925vxge_get_stats(struct net_device *dev)
2926{
2927 struct vxgedev *vdev;
2928 struct net_device_stats *net_stats;
2929 int k;
2930
2931 vdev = netdev_priv(dev);
2932
2933 net_stats = &vdev->stats.net_stats;
2934
2935 memset(net_stats, 0, sizeof(struct net_device_stats));
2936
2937 for (k = 0; k < vdev->no_of_vpath; k++) {
2938 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
2939 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
2940 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
2941 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
2942 net_stats->rx_dropped +=
2943 vdev->vpaths[k].ring.stats.rx_dropped;
2944
2945 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
2946 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
2947 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
2948 }
2949
2950 return net_stats;
2951}
2952
2953/**
2954 * vxge_ioctl
2955 * @dev: Device pointer.
2956 * @ifr: An IOCTL specific structure, that can contain a pointer to
2957 * a proprietary structure used to pass information to the driver.
2958 * @cmd: This is used to distinguish between the different commands that
2959 * can be passed to the IOCTL functions.
2960 *
2961 * Entry point for the Ioctl.
2962 */
2963static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2964{
2965 return -EOPNOTSUPP;
2966}
2967
2968/**
2969 * vxge_tx_watchdog
2970 * @dev: pointer to net device structure
2971 *
2972 * Watchdog for transmit side.
2973 * This function is triggered if the Tx Queue is stopped
2974 * for a pre-defined amount of time when the Interface is still up.
2975 */
2976static void
2977vxge_tx_watchdog(struct net_device *dev)
2978{
2979 struct vxgedev *vdev;
2980
2981 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2982
2983 vdev = (struct vxgedev *)netdev_priv(dev);
2984
2985 vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
2986
2987 vxge_reset(vdev);
2988 vxge_debug_entryexit(VXGE_TRACE,
2989 "%s:%d Exiting...", __func__, __LINE__);
2990}
2991
2992/**
2993 * vxge_vlan_rx_register
2994 * @dev: net device pointer.
2995 * @grp: vlan group
2996 *
2997 * Vlan group registration
2998 */
2999static void
3000vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3001{
3002 struct vxgedev *vdev;
3003 struct vxge_vpath *vpath;
3004 int vp;
3005 u64 vid;
3006 enum vxge_hw_status status;
3007 int i;
3008
3009 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3010
3011 vdev = (struct vxgedev *)netdev_priv(dev);
3012
3013 vpath = &vdev->vpaths[0];
3014 if ((NULL == grp) && (vpath->is_open)) {
3015 /* Get the first vlan */
3016 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3017
3018 while (status == VXGE_HW_OK) {
3019
3020 /* Delete this vlan from the vid table */
3021 for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3022 vpath = &vdev->vpaths[vp];
3023 if (!vpath->is_open)
3024 continue;
3025
3026 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3027 }
3028
3029 /* Get the next vlan to be deleted */
3030 vpath = &vdev->vpaths[0];
3031 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3032 }
3033 }
3034
3035 vdev->vlgrp = grp;
3036
3037 for (i = 0; i < vdev->no_of_vpath; i++) {
3038 if (vdev->vpaths[i].is_configured)
3039 vdev->vpaths[i].ring.vlgrp = grp;
3040 }
3041
3042 vxge_debug_entryexit(VXGE_TRACE,
3043 "%s:%d Exiting...", __func__, __LINE__);
3044}
3045
3046/**
3047 * vxge_vlan_rx_add_vid
3048 * @dev: net device pointer.
3049 * @vid: vid
3050 *
3051 * Add the vlan id to the devices vlan id table
3052 */
3053static void
3054vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3055{
3056 struct vxgedev *vdev;
3057 struct vxge_vpath *vpath;
3058 int vp_id;
3059
3060 vdev = (struct vxgedev *)netdev_priv(dev);
3061
3062 /* Add these vlan to the vid table */
3063 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3064 vpath = &vdev->vpaths[vp_id];
3065 if (!vpath->is_open)
3066 continue;
3067 vxge_hw_vpath_vid_add(vpath->handle, vid);
3068 }
3069}
3070
3071/**
3072 * vxge_vlan_rx_add_vid
3073 * @dev: net device pointer.
3074 * @vid: vid
3075 *
3076 * Remove the vlan id from the device's vlan id table
3077 */
3078static void
3079vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3080{
3081 struct vxgedev *vdev;
3082 struct vxge_vpath *vpath;
3083 int vp_id;
3084
3085 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3086
3087 vdev = (struct vxgedev *)netdev_priv(dev);
3088
3089 vlan_group_set_device(vdev->vlgrp, vid, NULL);
3090
3091 /* Delete this vlan from the vid table */
3092 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3093 vpath = &vdev->vpaths[vp_id];
3094 if (!vpath->is_open)
3095 continue;
3096 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3097 }
3098 vxge_debug_entryexit(VXGE_TRACE,
3099 "%s:%d Exiting...", __func__, __LINE__);
3100}
3101
3102static const struct net_device_ops vxge_netdev_ops = {
3103 .ndo_open = vxge_open,
3104 .ndo_stop = vxge_close,
3105 .ndo_get_stats = vxge_get_stats,
3106 .ndo_start_xmit = vxge_xmit,
3107 .ndo_validate_addr = eth_validate_addr,
3108 .ndo_set_multicast_list = vxge_set_multicast,
3109
3110 .ndo_do_ioctl = vxge_ioctl,
3111
3112 .ndo_set_mac_address = vxge_set_mac_addr,
3113 .ndo_change_mtu = vxge_change_mtu,
3114 .ndo_vlan_rx_register = vxge_vlan_rx_register,
3115 .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid,
3116 .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid,
3117
3118 .ndo_tx_timeout = vxge_tx_watchdog,
3119#ifdef CONFIG_NET_POLL_CONTROLLER
3120 .ndo_poll_controller = vxge_netpoll,
3121#endif
3122};
3123
3124int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3125 struct vxge_config *config,
3126 int high_dma, int no_of_vpath,
3127 struct vxgedev **vdev_out)
3128{
3129 struct net_device *ndev;
3130 enum vxge_hw_status status = VXGE_HW_OK;
3131 struct vxgedev *vdev;
98f45da2 3132 int ret = 0, no_of_queue = 1;
703da5a1
RV		 3133 u64 stat;
3134
3135 *vdev_out = NULL;
d03848e0 3136 if (config->tx_steering_type)
703da5a1
RV		 3137 no_of_queue = no_of_vpath;
3138
3139 ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3140 no_of_queue);
3141 if (ndev == NULL) {
3142 vxge_debug_init(
3143 vxge_hw_device_trace_level_get(hldev),
3144 "%s : device allocation failed", __func__);
3145 ret = -ENODEV;
3146 goto _out0;
3147 }
3148
3149 vxge_debug_entryexit(
3150 vxge_hw_device_trace_level_get(hldev),
3151 "%s: %s:%d Entering...",
3152 ndev->name, __func__, __LINE__);
3153
3154 vdev = netdev_priv(ndev);
3155 memset(vdev, 0, sizeof(struct vxgedev));
3156
3157 vdev->ndev = ndev;
3158 vdev->devh = hldev;
3159 vdev->pdev = hldev->pdev;
3160 memcpy(&vdev->config, config, sizeof(struct vxge_config));
3161 vdev->rx_csum = 1; /* Enable Rx CSUM by default. */
3162
3163 SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3164
3165 ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3166 NETIF_F_HW_VLAN_FILTER;
3167 /* Driver entry points */
3168 ndev->irq = vdev->pdev->irq;
3169 ndev->base_addr = (unsigned long) hldev->bar0;
3170
3171 ndev->netdev_ops = &vxge_netdev_ops;
3172
3173 ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3174
3175 initialize_ethtool_ops(ndev);
3176
3177 /* Allocate memory for vpath */
3178 vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3179 no_of_vpath, GFP_KERNEL);
3180 if (!vdev->vpaths) {
3181 vxge_debug_init(VXGE_ERR,
3182 "%s: vpath memory allocation failed",
3183 vdev->ndev->name);
3184 ret = -ENODEV;
3185 goto _out1;
3186 }
3187
3188 ndev->features |= NETIF_F_SG;
3189
3190 ndev->features |= NETIF_F_HW_CSUM;
3191 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3192 "%s : checksuming enabled", __func__);
3193
3194 if (high_dma) {
3195 ndev->features |= NETIF_F_HIGHDMA;
3196 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3197 "%s : using High DMA", __func__);
3198 }
3199
3200 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3201
3202 if (vdev->config.gro_enable)
3203 ndev->features |= NETIF_F_GRO;
3204
703da5a1
RV		 3205 if (register_netdev(ndev)) {
3206 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3207 "%s: %s : device registration failed!",
3208 ndev->name, __func__);
3209 ret = -ENODEV;
3210 goto _out2;
3211 }
3212
3213 /* Set the factory defined MAC address initially */
3214 ndev->addr_len = ETH_ALEN;
3215
3216 /* Make Link state as off at this point, when the Link change
3217 * interrupt comes the state will be automatically changed to
3218 * the right state.
3219 */
3220 netif_carrier_off(ndev);
3221
3222 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3223 "%s: Ethernet device registered",
3224 ndev->name);
3225
3226 *vdev_out = vdev;
3227
3228 /* Resetting the Device stats */
3229 status = vxge_hw_mrpcim_stats_access(
3230 hldev,
3231 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3232 0,
3233 0,
3234 &stat);
3235
3236 if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3237 vxge_debug_init(
3238 vxge_hw_device_trace_level_get(hldev),
3239 "%s: device stats clear returns"
3240 "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3241
3242 vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3243 "%s: %s:%d Exiting...",
3244 ndev->name, __func__, __LINE__);
3245
3246 return ret;
3247_out2:
3248 kfree(vdev->vpaths);
3249_out1:
3250 free_netdev(ndev);
3251_out0:
3252 return ret;
3253}
3254
3255/*
3256 * vxge_device_unregister
3257 *
3258 * This function will unregister and free network device
3259 */
3260void
3261vxge_device_unregister(struct __vxge_hw_device *hldev)
3262{
3263 struct vxgedev *vdev;
3264 struct net_device *dev;
3265 char buf[IFNAMSIZ];
3266#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3267 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3268 u32 level_trace;
3269#endif
3270
3271 dev = hldev->ndev;
3272 vdev = netdev_priv(dev);
3273#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3274 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3275 level_trace = vdev->level_trace;
3276#endif
3277 vxge_debug_entryexit(level_trace,
3278 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3279
3280 memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3281
3282 /* in 2.6 will call stop() if device is up */
3283 unregister_netdev(dev);
3284
3285 flush_scheduled_work();
3286
3287 vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3288 vxge_debug_entryexit(level_trace,
3289 "%s: %s:%d Exiting...", buf, __func__, __LINE__);
3290}
3291
3292/*
3293 * vxge_callback_crit_err
3294 *
3295 * This function is called by the alarm handler in interrupt context.
3296 * Driver must analyze it based on the event type.
3297 */
3298static void
3299vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3300 enum vxge_hw_event type, u64 vp_id)
3301{
3302 struct net_device *dev = hldev->ndev;
3303 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
98f45da2 3304 struct vxge_vpath *vpath = NULL;
703da5a1
RV		 3305 int vpath_idx;
3306
3307 vxge_debug_entryexit(vdev->level_trace,
3308 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3309
3310 /* Note: This event type should be used for device wide
3311 * indications only - Serious errors, Slot freeze and critical errors
3312 */
3313 vdev->cric_err_event = type;
3314
98f45da2
JM		 3315 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3316 vpath = &vdev->vpaths[vpath_idx];
3317 if (vpath->device_id == vp_id)
703da5a1 3318 break;
98f45da2 3319 }
703da5a1
RV		 3320
3321 if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3322 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3323 vxge_debug_init(VXGE_ERR,
3324 "%s: Slot is frozen", vdev->ndev->name);
3325 } else if (type == VXGE_HW_EVENT_SERR) {
3326 vxge_debug_init(VXGE_ERR,
3327 "%s: Encountered Serious Error",
3328 vdev->ndev->name);
3329 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3330 vxge_debug_init(VXGE_ERR,
3331 "%s: Encountered Critical Error",
3332 vdev->ndev->name);
3333 }
3334
3335 if ((type == VXGE_HW_EVENT_SERR) ||
3336 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3337 if (unlikely(vdev->exec_mode))
3338 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3339 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3340 vxge_hw_device_mask_all(hldev);
3341 if (unlikely(vdev->exec_mode))
3342 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3343 } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3344 (type == VXGE_HW_EVENT_VPATH_ERR)) {
3345
3346 if (unlikely(vdev->exec_mode))
3347 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3348 else {
3349 /* check if this vpath is already set for reset */
3350 if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3351
3352 /* disable interrupts for this vpath */
3353 vxge_vpath_intr_disable(vdev, vpath_idx);
3354
3355 /* stop the queue for this vpath */
98f45da2 3356 netif_tx_stop_queue(vpath->fifo.txq);
703da5a1
RV		 3357 }
3358 }
3359 }
3360
3361 vxge_debug_entryexit(vdev->level_trace,
3362 "%s: %s:%d Exiting...",
3363 vdev->ndev->name, __func__, __LINE__);
3364}
3365
3366static void verify_bandwidth(void)
3367{
3368 int i, band_width, total = 0, equal_priority = 0;
3369
3370 /* 1. If user enters 0 for some fifo, give equal priority to all */
3371 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3372 if (bw_percentage[i] == 0) {
3373 equal_priority = 1;
3374 break;
3375 }
3376 }
3377
3378 if (!equal_priority) {
3379 /* 2. If sum exceeds 100, give equal priority to all */
3380 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3381 if (bw_percentage[i] == 0xFF)
3382 break;
3383
3384 total += bw_percentage[i];
3385 if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3386 equal_priority = 1;
3387 break;
3388 }
3389 }
3390 }
3391
3392 if (!equal_priority) {
3393 /* Is all the bandwidth consumed? */
3394 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3395 if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3396 /* Split rest of bw equally among next VPs*/
3397 band_width =
3398 (VXGE_HW_VPATH_BANDWIDTH_MAX - total) /
3399 (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3400 if (band_width < 2) /* min of 2% */
3401 equal_priority = 1;
3402 else {
3403 for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3404 i++)
3405 bw_percentage[i] =
3406 band_width;
3407 }
3408 }
3409 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3410 equal_priority = 1;
3411 }
3412
3413 if (equal_priority) {
3414 vxge_debug_init(VXGE_ERR,
3415 "%s: Assigning equal bandwidth to all the vpaths",
3416 VXGE_DRIVER_NAME);
3417 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3418 VXGE_HW_MAX_VIRTUAL_PATHS;
3419 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3420 bw_percentage[i] = bw_percentage[0];
3421 }
703da5a1
RV		 3422}
3423
3424/*
3425 * Vpath configuration
3426 */
3427static int __devinit vxge_config_vpaths(
3428 struct vxge_hw_device_config *device_config,
3429 u64 vpath_mask, struct vxge_config *config_param)
3430{
3431 int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3432 u32 txdl_size, txdl_per_memblock;
3433
3434 temp = driver_config->vpath_per_dev;
3435 if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3436 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3437 /* No more CPU. Return vpath number as zero.*/
3438 if (driver_config->g_no_cpus == -1)
3439 return 0;
3440
3441 if (!driver_config->g_no_cpus)
3442 driver_config->g_no_cpus = num_online_cpus();
3443
3444 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3445 if (!driver_config->vpath_per_dev)
3446 driver_config->vpath_per_dev = 1;
3447
3448 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3449 if (!vxge_bVALn(vpath_mask, i, 1))
3450 continue;
3451 else
3452 default_no_vpath++;
3453 if (default_no_vpath < driver_config->vpath_per_dev)
3454 driver_config->vpath_per_dev = default_no_vpath;
3455
3456 driver_config->g_no_cpus = driver_config->g_no_cpus -
3457 (driver_config->vpath_per_dev * 2);
3458 if (driver_config->g_no_cpus <= 0)
3459 driver_config->g_no_cpus = -1;
3460 }
3461
3462 if (driver_config->vpath_per_dev == 1) {
3463 vxge_debug_ll_config(VXGE_TRACE,
3464 "%s: Disable tx and rx steering, "
3465 "as single vpath is configured", VXGE_DRIVER_NAME);
3466 config_param->rth_steering = NO_STEERING;
3467 config_param->tx_steering_type = NO_STEERING;
3468 device_config->rth_en = 0;
3469 }
3470
3471 /* configure bandwidth */
3472 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3473 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3474
3475 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3476 device_config->vp_config[i].vp_id = i;
3477 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3478 if (no_of_vpaths < driver_config->vpath_per_dev) {
3479 if (!vxge_bVALn(vpath_mask, i, 1)) {
3480 vxge_debug_ll_config(VXGE_TRACE,
3481 "%s: vpath: %d is not available",
3482 VXGE_DRIVER_NAME, i);
3483 continue;
3484 } else {
3485 vxge_debug_ll_config(VXGE_TRACE,
3486 "%s: vpath: %d available",
3487 VXGE_DRIVER_NAME, i);
3488 no_of_vpaths++;
3489 }
3490 } else {
3491 vxge_debug_ll_config(VXGE_TRACE,
3492 "%s: vpath: %d is not configured, "
3493 "max_config_vpath exceeded",
3494 VXGE_DRIVER_NAME, i);
3495 break;
3496 }
3497
3498 /* Configure Tx fifo's */
3499 device_config->vp_config[i].fifo.enable =
3500 VXGE_HW_FIFO_ENABLE;
3501 device_config->vp_config[i].fifo.max_frags =
5beefb4f 3502 MAX_SKB_FRAGS + 1;
703da5a1
RV		 3503 device_config->vp_config[i].fifo.memblock_size =
3504 VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3505
5beefb4f
SH		 3506 txdl_size = device_config->vp_config[i].fifo.max_frags *
3507 sizeof(struct vxge_hw_fifo_txd);
703da5a1
RV		 3508 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3509
3510 device_config->vp_config[i].fifo.fifo_blocks =
3511 ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3512
3513 device_config->vp_config[i].fifo.intr =
3514 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3515
3516 /* Configure tti properties */
3517 device_config->vp_config[i].tti.intr_enable =
3518 VXGE_HW_TIM_INTR_ENABLE;
3519
3520 device_config->vp_config[i].tti.btimer_val =
3521 (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3522
3523 device_config->vp_config[i].tti.timer_ac_en =
3524 VXGE_HW_TIM_TIMER_AC_ENABLE;
3525
3526 /* For msi-x with napi (each vector
3527 has a handler of its own) -
3528 Set CI to OFF for all vpaths */
3529 device_config->vp_config[i].tti.timer_ci_en =
3530 VXGE_HW_TIM_TIMER_CI_DISABLE;
3531
3532 device_config->vp_config[i].tti.timer_ri_en =
3533 VXGE_HW_TIM_TIMER_RI_DISABLE;
3534
3535 device_config->vp_config[i].tti.util_sel =
3536 VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3537
3538 device_config->vp_config[i].tti.ltimer_val =
3539 (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3540
3541 device_config->vp_config[i].tti.rtimer_val =
3542 (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3543
3544 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3545 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3546 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3547 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3548 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3549 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3550 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3551
3552 /* Configure Rx rings */
3553 device_config->vp_config[i].ring.enable =
3554 VXGE_HW_RING_ENABLE;
3555
3556 device_config->vp_config[i].ring.ring_blocks =
3557 VXGE_HW_DEF_RING_BLOCKS;
3558 device_config->vp_config[i].ring.buffer_mode =
3559 VXGE_HW_RING_RXD_BUFFER_MODE_1;
3560 device_config->vp_config[i].ring.rxds_limit =
3561 VXGE_HW_DEF_RING_RXDS_LIMIT;
3562 device_config->vp_config[i].ring.scatter_mode =
3563 VXGE_HW_RING_SCATTER_MODE_A;
3564
3565 /* Configure rti properties */
3566 device_config->vp_config[i].rti.intr_enable =
3567 VXGE_HW_TIM_INTR_ENABLE;
3568
3569 device_config->vp_config[i].rti.btimer_val =
3570 (VXGE_RTI_BTIMER_VAL * 1000)/272;
3571
3572 device_config->vp_config[i].rti.timer_ac_en =
3573 VXGE_HW_TIM_TIMER_AC_ENABLE;
3574
3575 device_config->vp_config[i].rti.timer_ci_en =
3576 VXGE_HW_TIM_TIMER_CI_DISABLE;
3577
3578 device_config->vp_config[i].rti.timer_ri_en =
3579 VXGE_HW_TIM_TIMER_RI_DISABLE;
3580
3581 device_config->vp_config[i].rti.util_sel =
3582 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3583
3584 device_config->vp_config[i].rti.urange_a =
3585 RTI_RX_URANGE_A;
3586 device_config->vp_config[i].rti.urange_b =
3587 RTI_RX_URANGE_B;
3588 device_config->vp_config[i].rti.urange_c =
3589 RTI_RX_URANGE_C;
3590 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3591 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3592 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3593 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3594
3595 device_config->vp_config[i].rti.rtimer_val =
3596 (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3597
3598 device_config->vp_config[i].rti.ltimer_val =
3599 (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3600
3601 device_config->vp_config[i].rpa_strip_vlan_tag =
3602 vlan_tag_strip;
3603 }
3604
3605 driver_config->vpath_per_dev = temp;
3606 return no_of_vpaths;
3607}
3608
3609/* initialize device configuratrions */
3610static void __devinit vxge_device_config_init(
3611 struct vxge_hw_device_config *device_config,
3612 int *intr_type)
3613{
3614 /* Used for CQRQ/SRQ. */
3615 device_config->dma_blockpool_initial =
3616 VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3617
3618 device_config->dma_blockpool_max =
3619 VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3620
3621 if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3622 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3623
3624#ifndef CONFIG_PCI_MSI
3625 vxge_debug_init(VXGE_ERR,
3626 "%s: This Kernel does not support "
3627 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3628 *intr_type = INTA;
3629#endif
3630
3631 /* Configure whether MSI-X or IRQL. */
3632 switch (*intr_type) {
3633 case INTA:
3634 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3635 break;
3636
3637 case MSI_X:
3638 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3639 break;
3640 }
3641 /* Timer period between device poll */
3642 device_config->device_poll_millis = VXGE_TIMER_DELAY;
3643
3644 /* Configure mac based steering. */
3645 device_config->rts_mac_en = addr_learn_en;
3646
3647 /* Configure Vpaths */
3648 device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3649
3650 vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3651 __func__);
3652 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3653 device_config->dma_blockpool_initial);
3654 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3655 device_config->dma_blockpool_max);
3656 vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3657 device_config->intr_mode);
3658 vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3659 device_config->device_poll_millis);
3660 vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3661 device_config->rts_mac_en);
3662 vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3663 device_config->rth_en);
3664 vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3665 device_config->rth_it_type);
3666}
3667
3668static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3669{
3670 int i;
3671
3672 vxge_debug_init(VXGE_TRACE,
3673 "%s: %d Vpath(s) opened",
3674 vdev->ndev->name, vdev->no_of_vpath);
3675
3676 switch (vdev->config.intr_type) {
3677 case INTA:
3678 vxge_debug_init(VXGE_TRACE,
3679 "%s: Interrupt type INTA", vdev->ndev->name);
3680 break;
3681
3682 case MSI_X:
3683 vxge_debug_init(VXGE_TRACE,
3684 "%s: Interrupt type MSI-X", vdev->ndev->name);
3685 break;
3686 }
3687
3688 if (vdev->config.rth_steering) {
3689 vxge_debug_init(VXGE_TRACE,
3690 "%s: RTH steering enabled for TCP_IPV4",
3691 vdev->ndev->name);
3692 } else {
3693 vxge_debug_init(VXGE_TRACE,
3694 "%s: RTH steering disabled", vdev->ndev->name);
3695 }
3696
3697 switch (vdev->config.tx_steering_type) {
3698 case NO_STEERING:
3699 vxge_debug_init(VXGE_TRACE,
3700 "%s: Tx steering disabled", vdev->ndev->name);
3701 break;
3702 case TX_PRIORITY_STEERING:
3703 vxge_debug_init(VXGE_TRACE,
3704 "%s: Unsupported tx steering option",
3705 vdev->ndev->name);
3706 vxge_debug_init(VXGE_TRACE,
3707 "%s: Tx steering disabled", vdev->ndev->name);
3708 vdev->config.tx_steering_type = 0;
3709 break;
3710 case TX_VLAN_STEERING:
3711 vxge_debug_init(VXGE_TRACE,
3712 "%s: Unsupported tx steering option",
3713 vdev->ndev->name);
3714 vxge_debug_init(VXGE_TRACE,
3715 "%s: Tx steering disabled", vdev->ndev->name);
3716 vdev->config.tx_steering_type = 0;
3717 break;
3718 case TX_MULTIQ_STEERING:
3719 vxge_debug_init(VXGE_TRACE,
3720 "%s: Tx multiqueue steering enabled",
3721 vdev->ndev->name);
3722 break;
3723 case TX_PORT_STEERING:
3724 vxge_debug_init(VXGE_TRACE,
3725 "%s: Tx port steering enabled",
3726 vdev->ndev->name);
3727 break;
3728 default:
3729 vxge_debug_init(VXGE_ERR,
3730 "%s: Unsupported tx steering type",
3731 vdev->ndev->name);
3732 vxge_debug_init(VXGE_TRACE,
3733 "%s: Tx steering disabled", vdev->ndev->name);
3734 vdev->config.tx_steering_type = 0;
3735 }
3736
3737 if (vdev->config.gro_enable) {
3738 vxge_debug_init(VXGE_ERR,
3739 "%s: Generic receive offload enabled",
3740 vdev->ndev->name);
3741 } else
3742 vxge_debug_init(VXGE_TRACE,
3743 "%s: Generic receive offload disabled",
3744 vdev->ndev->name);
3745
3746 if (vdev->config.addr_learn_en)
3747 vxge_debug_init(VXGE_TRACE,
3748 "%s: MAC Address learning enabled", vdev->ndev->name);
3749
3750 vxge_debug_init(VXGE_TRACE,
3751 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3752
3753 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3754 if (!vxge_bVALn(vpath_mask, i, 1))
3755 continue;
3756 vxge_debug_ll_config(VXGE_TRACE,
3757 "%s: MTU size - %d", vdev->ndev->name,
3758 ((struct __vxge_hw_device *)(vdev->devh))->
3759 config.vp_config[i].mtu);
3760 vxge_debug_init(VXGE_TRACE,
3761 "%s: VLAN tag stripping %s", vdev->ndev->name,
3762 ((struct __vxge_hw_device *)(vdev->devh))->
3763 config.vp_config[i].rpa_strip_vlan_tag
3764 ? "Enabled" : "Disabled");
3765 vxge_debug_init(VXGE_TRACE,
3766 "%s: Ring blocks : %d", vdev->ndev->name,
3767 ((struct __vxge_hw_device *)(vdev->devh))->
3768 config.vp_config[i].ring.ring_blocks);
3769 vxge_debug_init(VXGE_TRACE,
3770 "%s: Fifo blocks : %d", vdev->ndev->name,
3771 ((struct __vxge_hw_device *)(vdev->devh))->
3772 config.vp_config[i].fifo.fifo_blocks);
3773 vxge_debug_ll_config(VXGE_TRACE,
3774 "%s: Max frags : %d", vdev->ndev->name,
3775 ((struct __vxge_hw_device *)(vdev->devh))->
3776 config.vp_config[i].fifo.max_frags);
3777 break;
3778 }
3779}
3780
3781#ifdef CONFIG_PM
3782/**
3783 * vxge_pm_suspend - vxge power management suspend entry point
3784 *
3785 */
3786static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3787{
3788 return -ENOSYS;
3789}
3790/**
3791 * vxge_pm_resume - vxge power management resume entry point
3792 *
3793 */
3794static int vxge_pm_resume(struct pci_dev *pdev)
3795{
3796 return -ENOSYS;
3797}
3798
3799#endif
3800
3801/**
3802 * vxge_io_error_detected - called when PCI error is detected
3803 * @pdev: Pointer to PCI device
3804 * @state: The current pci connection state
3805 *
3806 * This function is called after a PCI bus error affecting
3807 * this device has been detected.
3808 */
3809static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3810 pci_channel_state_t state)
3811{
3812 struct __vxge_hw_device *hldev =
3813 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3814 struct net_device *netdev = hldev->ndev;
3815
3816 netif_device_detach(netdev);
3817
e33b992d
DN		 3818 if (state == pci_channel_io_perm_failure)
3819 return PCI_ERS_RESULT_DISCONNECT;
3820
703da5a1
RV		 3821 if (netif_running(netdev)) {
3822 /* Bring down the card, while avoiding PCI I/O */
3823 do_vxge_close(netdev, 0);
3824 }
3825
3826 pci_disable_device(pdev);
3827
3828 return PCI_ERS_RESULT_NEED_RESET;
3829}
3830
3831/**
3832 * vxge_io_slot_reset - called after the pci bus has been reset.
3833 * @pdev: Pointer to PCI device
3834 *
3835 * Restart the card from scratch, as if from a cold-boot.
3836 * At this point, the card has exprienced a hard reset,
3837 * followed by fixups by BIOS, and has its config space
3838 * set up identically to what it was at cold boot.
3839 */
3840static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3841{
3842 struct __vxge_hw_device *hldev =
3843 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3844 struct net_device *netdev = hldev->ndev;
3845
3846 struct vxgedev *vdev = netdev_priv(netdev);
3847
3848 if (pci_enable_device(pdev)) {
75f5e1c6 3849 netdev_err(netdev, "Cannot re-enable device after reset\n");
703da5a1
RV		 3850 return PCI_ERS_RESULT_DISCONNECT;
3851 }
3852
3853 pci_set_master(pdev);
3854 vxge_reset(vdev);
3855
3856 return PCI_ERS_RESULT_RECOVERED;
3857}
3858
3859/**
3860 * vxge_io_resume - called when traffic can start flowing again.
3861 * @pdev: Pointer to PCI device
3862 *
3863 * This callback is called when the error recovery driver tells
3864 * us that its OK to resume normal operation.
3865 */
3866static void vxge_io_resume(struct pci_dev *pdev)
3867{
3868 struct __vxge_hw_device *hldev =
3869 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3870 struct net_device *netdev = hldev->ndev;
3871
3872 if (netif_running(netdev)) {
3873 if (vxge_open(netdev)) {
75f5e1c6
JP		 3874 netdev_err(netdev,
3875 "Can't bring device back up after reset\n");
703da5a1
RV		 3876 return;
3877 }
3878 }
3879
3880 netif_device_attach(netdev);
3881}
3882
cb27ec60
SH		 3883static inline u32 vxge_get_num_vfs(u64 function_mode)
3884{
3885 u32 num_functions = 0;
3886
3887 switch (function_mode) {
3888 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
3889 case VXGE_HW_FUNCTION_MODE_SRIOV_8:
3890 num_functions = 8;
3891 break;
3892 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
3893 num_functions = 1;
3894 break;
3895 case VXGE_HW_FUNCTION_MODE_SRIOV:
3896 case VXGE_HW_FUNCTION_MODE_MRIOV:
3897 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
3898 num_functions = 17;
3899 break;
3900 case VXGE_HW_FUNCTION_MODE_SRIOV_4:
3901 num_functions = 4;
3902 break;
3903 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
3904 num_functions = 2;
3905 break;
3906 case VXGE_HW_FUNCTION_MODE_MRIOV_8:
3907 num_functions = 8; /* TODO */
3908 break;
3909 }
3910 return num_functions;
3911}
3912
703da5a1
RV		 3913/**
3914 * vxge_probe
3915 * @pdev : structure containing the PCI related information of the device.
3916 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
3917 * Description:
3918 * This function is called when a new PCI device gets detected and initializes
3919 * it.
3920 * Return value:
3921 * returns 0 on success and negative on failure.
3922 *
3923 */
3924static int __devinit
3925vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
3926{
3927 struct __vxge_hw_device *hldev;
3928 enum vxge_hw_status status;
3929 int ret;
3930 int high_dma = 0;
3931 u64 vpath_mask = 0;
3932 struct vxgedev *vdev;
7dad171c 3933 struct vxge_config *ll_config = NULL;
703da5a1
RV		 3934 struct vxge_hw_device_config *device_config = NULL;
3935 struct vxge_hw_device_attr attr;
3936 int i, j, no_of_vpath = 0, max_vpath_supported = 0;
3937 u8 *macaddr;
3938 struct vxge_mac_addrs *entry;
3939 static int bus = -1, device = -1;
cb27ec60 3940 u32 host_type;
703da5a1 3941 u8 new_device = 0;
cb27ec60
SH		 3942 enum vxge_hw_status is_privileged;
3943 u32 function_mode;
3944 u32 num_vfs = 0;
703da5a1
RV		 3945
3946 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3947 attr.pdev = pdev;
3948
cb27ec60
SH		 3949 /* In SRIOV-17 mode, functions of the same adapter
3950 * can be deployed on different buses */
3951 if ((!pdev->is_virtfn) && ((bus != pdev->bus->number) ||
3952 (device != PCI_SLOT(pdev->devfn))))
703da5a1
RV		 3953 new_device = 1;
3954
3955 bus = pdev->bus->number;
3956 device = PCI_SLOT(pdev->devfn);
3957
3958 if (new_device) {
3959 if (driver_config->config_dev_cnt &&
3960 (driver_config->config_dev_cnt !=
3961 driver_config->total_dev_cnt))
3962 vxge_debug_init(VXGE_ERR,
3963 "%s: Configured %d of %d devices",
3964 VXGE_DRIVER_NAME,
3965 driver_config->config_dev_cnt,
3966 driver_config->total_dev_cnt);
3967 driver_config->config_dev_cnt = 0;
3968 driver_config->total_dev_cnt = 0;
703da5a1 3969 }
9002397e
SH		 3970 /* Now making the CPU based no of vpath calculation
3971 * applicable for individual functions as well.
3972 */
3973 driver_config->g_no_cpus = 0;
657205bd
SH		 3974 driver_config->vpath_per_dev = max_config_vpath;
3975
703da5a1
RV		 3976 driver_config->total_dev_cnt++;
3977 if (++driver_config->config_dev_cnt > max_config_dev) {
3978 ret = 0;
3979 goto _exit0;
3980 }
3981
3982 device_config = kzalloc(sizeof(struct vxge_hw_device_config),
3983 GFP_KERNEL);
3984 if (!device_config) {
3985 ret = -ENOMEM;
3986 vxge_debug_init(VXGE_ERR,
3987 "device_config : malloc failed %s %d",
3988 __FILE__, __LINE__);
3989 goto _exit0;
3990 }
3991
7dad171c
PB		 3992 ll_config = kzalloc(sizeof(*ll_config), GFP_KERNEL);
3993 if (!ll_config) {
3994 ret = -ENOMEM;
3995 vxge_debug_init(VXGE_ERR,
3996 "ll_config : malloc failed %s %d",
3997 __FILE__, __LINE__);
3998 goto _exit0;
3999 }
4000 ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4001 ll_config->intr_type = MSI_X;
4002 ll_config->napi_weight = NEW_NAPI_WEIGHT;
4003 ll_config->rth_steering = RTH_STEERING;
703da5a1
RV		 4004
4005 /* get the default configuration parameters */
4006 vxge_hw_device_config_default_get(device_config);
4007
4008 /* initialize configuration parameters */
7dad171c 4009 vxge_device_config_init(device_config, &ll_config->intr_type);
703da5a1
RV		 4010
4011 ret = pci_enable_device(pdev);
4012 if (ret) {
4013 vxge_debug_init(VXGE_ERR,
4014 "%s : can not enable PCI device", __func__);
4015 goto _exit0;
4016 }
4017
b3837cec 4018 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
703da5a1
RV		 4019 vxge_debug_ll_config(VXGE_TRACE,
4020 "%s : using 64bit DMA", __func__);
4021
4022 high_dma = 1;
4023
4024 if (pci_set_consistent_dma_mask(pdev,
b3837cec 4025 DMA_BIT_MASK(64))) {
703da5a1
RV		 4026 vxge_debug_init(VXGE_ERR,
4027 "%s : unable to obtain 64bit DMA for "
4028 "consistent allocations", __func__);
4029 ret = -ENOMEM;
4030 goto _exit1;
4031 }
b3837cec 4032 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
703da5a1
RV		 4033 vxge_debug_ll_config(VXGE_TRACE,
4034 "%s : using 32bit DMA", __func__);
4035 } else {
4036 ret = -ENOMEM;
4037 goto _exit1;
4038 }
4039
4040 if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4041 vxge_debug_init(VXGE_ERR,
4042 "%s : request regions failed", __func__);
4043 ret = -ENODEV;
4044 goto _exit1;
4045 }
4046
4047 pci_set_master(pdev);
4048
4049 attr.bar0 = pci_ioremap_bar(pdev, 0);
4050 if (!attr.bar0) {
4051 vxge_debug_init(VXGE_ERR,
4052 "%s : cannot remap io memory bar0", __func__);
4053 ret = -ENODEV;
4054 goto _exit2;
4055 }
4056 vxge_debug_ll_config(VXGE_TRACE,
4057 "pci ioremap bar0: %p:0x%llx",
4058 attr.bar0,
4059 (unsigned long long)pci_resource_start(pdev, 0));
4060
703da5a1 4061 status = vxge_hw_device_hw_info_get(attr.bar0,
7dad171c 4062 &ll_config->device_hw_info);
703da5a1
RV		 4063 if (status != VXGE_HW_OK) {
4064 vxge_debug_init(VXGE_ERR,
4065 "%s: Reading of hardware info failed."
4066 "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4067 ret = -EINVAL;
7975d1ee 4068 goto _exit3;
703da5a1
RV		 4069 }
4070
7dad171c 4071 if (ll_config->device_hw_info.fw_version.major !=
22fa125e 4072 VXGE_DRIVER_FW_VERSION_MAJOR) {
703da5a1 4073 vxge_debug_init(VXGE_ERR,
22fa125e
SH		 4074 "%s: Incorrect firmware version."
4075 "Please upgrade the firmware to version 1.x.x",
4076 VXGE_DRIVER_NAME);
703da5a1 4077 ret = -EINVAL;
7975d1ee 4078 goto _exit3;
703da5a1
RV		 4079 }
4080
7dad171c 4081 vpath_mask = ll_config->device_hw_info.vpath_mask;
703da5a1
RV		 4082 if (vpath_mask == 0) {
4083 vxge_debug_ll_config(VXGE_TRACE,
4084 "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4085 ret = -EINVAL;
7975d1ee 4086 goto _exit3;
703da5a1
RV		 4087 }
4088
4089 vxge_debug_ll_config(VXGE_TRACE,
4090 "%s:%d Vpath mask = %llx", __func__, __LINE__,
4091 (unsigned long long)vpath_mask);
4092
7dad171c
PB		 4093 function_mode = ll_config->device_hw_info.function_mode;
4094 host_type = ll_config->device_hw_info.host_type;
cb27ec60 4095 is_privileged = __vxge_hw_device_is_privilaged(host_type,
7dad171c 4096 ll_config->device_hw_info.func_id);
cb27ec60 4097
703da5a1
RV		 4098 /* Check how many vpaths are available */
4099 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4100 if (!((vpath_mask) & vxge_mBIT(i)))
4101 continue;
4102 max_vpath_supported++;
4103 }
4104
cb27ec60
SH		 4105 if (new_device)
4106 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4107
5dbc9011 4108 /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
cb27ec60 4109 if (is_sriov(function_mode) && (max_config_dev > 1) &&
7dad171c 4110 (ll_config->intr_type != INTA) &&
cb27ec60
SH		 4111 (is_privileged == VXGE_HW_OK)) {
4112 ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
4113 ? (max_config_dev - 1) : num_vfs);
4114 if (ret)
4115 vxge_debug_ll_config(VXGE_ERR,
4116 "Failed in enabling SRIOV mode: %d\n", ret);
5dbc9011
SS		 4117 }
4118
703da5a1
RV		 4119 /*
4120 * Configure vpaths and get driver configured number of vpaths
4121 * which is less than or equal to the maximum vpaths per function.
4122 */
7dad171c 4123 no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
703da5a1
RV		 4124 if (!no_of_vpath) {
4125 vxge_debug_ll_config(VXGE_ERR,
4126 "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4127 ret = 0;
7975d1ee 4128 goto _exit3;
703da5a1
RV		 4129 }
4130
4131 /* Setting driver callbacks */
4132 attr.uld_callbacks.link_up = vxge_callback_link_up;
4133 attr.uld_callbacks.link_down = vxge_callback_link_down;
4134 attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4135
4136 status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4137 if (status != VXGE_HW_OK) {
4138 vxge_debug_init(VXGE_ERR,
4139 "Failed to initialize device (%d)", status);
4140 ret = -EINVAL;
7975d1ee 4141 goto _exit3;
703da5a1
RV		 4142 }
4143
fa41fd10
SH		 4144 /* if FCS stripping is not disabled in MAC fail driver load */
4145 if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
4146 vxge_debug_init(VXGE_ERR,
4147 "%s: FCS stripping is not disabled in MAC"
4148 " failing driver load", VXGE_DRIVER_NAME);
4149 ret = -EINVAL;
4150 goto _exit4;
4151 }
4152
703da5a1
RV		 4153 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4154
4155 /* set private device info */
4156 pci_set_drvdata(pdev, hldev);
4157
7dad171c
PB		 4158 ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4159 ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4160 ll_config->addr_learn_en = addr_learn_en;
4161 ll_config->rth_algorithm = RTH_ALG_JENKINS;
4162 ll_config->rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4163 ll_config->rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4164 ll_config->rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4165 ll_config->rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4166 ll_config->rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4167 ll_config->rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4168 ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4169 ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4170 ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4171
4172 if (vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
703da5a1
RV		 4173 &vdev)) {
4174 ret = -EINVAL;
7975d1ee 4175 goto _exit4;
703da5a1
RV		 4176 }
4177
4178 vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4179 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4180 vxge_hw_device_trace_level_get(hldev));
4181
4182 /* set private HW device info */
4183 hldev->ndev = vdev->ndev;
4184 vdev->mtu = VXGE_HW_DEFAULT_MTU;
4185 vdev->bar0 = attr.bar0;
703da5a1
RV		 4186 vdev->max_vpath_supported = max_vpath_supported;
4187 vdev->no_of_vpath = no_of_vpath;
4188
4189 /* Virtual Path count */
4190 for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4191 if (!vxge_bVALn(vpath_mask, i, 1))
4192 continue;
4193 if (j >= vdev->no_of_vpath)
4194 break;
4195
4196 vdev->vpaths[j].is_configured = 1;
4197 vdev->vpaths[j].device_id = i;
703da5a1
RV		 4198 vdev->vpaths[j].ring.driver_id = j;
4199 vdev->vpaths[j].vdev = vdev;
4200 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4201 memcpy((u8 *)vdev->vpaths[j].macaddr,
7dad171c 4202 ll_config->device_hw_info.mac_addrs[i],
703da5a1
RV		 4203 ETH_ALEN);
4204
4205 /* Initialize the mac address list header */
4206 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4207
4208 vdev->vpaths[j].mac_addr_cnt = 0;
4209 vdev->vpaths[j].mcast_addr_cnt = 0;
4210 j++;
4211 }
4212 vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4213 vdev->max_config_port = max_config_port;
4214
4215 vdev->vlan_tag_strip = vlan_tag_strip;
4216
4217 /* map the hashing selector table to the configured vpaths */
4218 for (i = 0; i < vdev->no_of_vpath; i++)
4219 vdev->vpath_selector[i] = vpath_selector[i];
4220
4221 macaddr = (u8 *)vdev->vpaths[0].macaddr;
4222
7dad171c
PB		 4223 ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4224 ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4225 ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
703da5a1
RV		 4226
4227 vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
7dad171c 4228 vdev->ndev->name, ll_config->device_hw_info.serial_number);
703da5a1
RV		 4229
4230 vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
7dad171c 4231 vdev->ndev->name, ll_config->device_hw_info.part_number);
703da5a1
RV		 4232
4233 vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
7dad171c 4234 vdev->ndev->name, ll_config->device_hw_info.product_desc);
703da5a1 4235
bf54e736 4236 vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4237 vdev->ndev->name, macaddr);
703da5a1
RV		 4238
4239 vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4240 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4241
4242 vxge_debug_init(VXGE_TRACE,
4243 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
7dad171c
PB		 4244 ll_config->device_hw_info.fw_version.version,
4245 ll_config->device_hw_info.fw_date.date);
703da5a1 4246
0a25bdc6 4247 if (new_device) {
7dad171c 4248 switch (ll_config->device_hw_info.function_mode) {
0a25bdc6
SH		 4249 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4250 vxge_debug_init(VXGE_TRACE,
4251 "%s: Single Function Mode Enabled", vdev->ndev->name);
4252 break;
4253 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4254 vxge_debug_init(VXGE_TRACE,
4255 "%s: Multi Function Mode Enabled", vdev->ndev->name);
4256 break;
4257 case VXGE_HW_FUNCTION_MODE_SRIOV:
4258 vxge_debug_init(VXGE_TRACE,
4259 "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4260 break;
4261 case VXGE_HW_FUNCTION_MODE_MRIOV:
4262 vxge_debug_init(VXGE_TRACE,
4263 "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4264 break;
4265 }
4266 }
4267
703da5a1
RV		 4268 vxge_print_parm(vdev, vpath_mask);
4269
4270 /* Store the fw version for ethttool option */
7dad171c 4271 strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
703da5a1
RV		 4272 memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4273 memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4274
4275 /* Copy the station mac address to the list */
4276 for (i = 0; i < vdev->no_of_vpath; i++) {
4277 entry = (struct vxge_mac_addrs *)
4278 kzalloc(sizeof(struct vxge_mac_addrs),
4279 GFP_KERNEL);
4280 if (NULL == entry) {
4281 vxge_debug_init(VXGE_ERR,
4282 "%s: mac_addr_list : memory allocation failed",
4283 vdev->ndev->name);
4284 ret = -EPERM;
7975d1ee 4285 goto _exit5;
703da5a1
RV		 4286 }
4287 macaddr = (u8 *)&entry->macaddr;
4288 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4289 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4290 vdev->vpaths[i].mac_addr_cnt = 1;
4291 }
4292
914d0d71 4293 kfree(device_config);
eb5f10c2
SH		 4294
4295 /*
4296 * INTA is shared in multi-function mode. This is unlike the INTA
4297 * implementation in MR mode, where each VH has its own INTA message.
4298 * - INTA is masked (disabled) as long as at least one function sets
4299 * its TITAN_MASK_ALL_INT.ALARM bit.
4300 * - INTA is unmasked (enabled) when all enabled functions have cleared
4301 * their own TITAN_MASK_ALL_INT.ALARM bit.
4302 * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4303 * Though this driver leaves the top level interrupts unmasked while
4304 * leaving the required module interrupt bits masked on exit, there
4305 * could be a rougue driver around that does not follow this procedure
4306 * resulting in a failure to generate interrupts. The following code is
4307 * present to prevent such a failure.
4308 */
4309
7dad171c 4310 if (ll_config->device_hw_info.function_mode ==
eb5f10c2
SH		 4311 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4312 if (vdev->config.intr_type == INTA)
4313 vxge_hw_device_unmask_all(hldev);
4314
703da5a1
RV		 4315 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
4316 vdev->ndev->name, __func__, __LINE__);
4317
4318 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4319 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4320 vxge_hw_device_trace_level_get(hldev));
4321
7dad171c 4322 kfree(ll_config);
703da5a1
RV		 4323 return 0;
4324
7975d1ee 4325_exit5:
703da5a1
RV		 4326 for (i = 0; i < vdev->no_of_vpath; i++)
4327 vxge_free_mac_add_list(&vdev->vpaths[i]);
4328
4329 vxge_device_unregister(hldev);
7975d1ee 4330_exit4:
5dbc9011 4331 pci_disable_sriov(pdev);
703da5a1 4332 vxge_hw_device_terminate(hldev);
703da5a1
RV		 4333_exit3:
4334 iounmap(attr.bar0);
4335_exit2:
4336 pci_release_regions(pdev);
4337_exit1:
4338 pci_disable_device(pdev);
4339_exit0:
7dad171c 4340 kfree(ll_config);
703da5a1
RV		 4341 kfree(device_config);
4342 driver_config->config_dev_cnt--;
4343 pci_set_drvdata(pdev, NULL);
4344 return ret;
4345}
4346
4347/**
4348 * vxge_rem_nic - Free the PCI device
4349 * @pdev: structure containing the PCI related information of the device.
4350 * Description: This function is called by the Pci subsystem to release a
4351 * PCI device and free up all resource held up by the device.
4352 */
4353static void __devexit
4354vxge_remove(struct pci_dev *pdev)
4355{
4356 struct __vxge_hw_device *hldev;
4357 struct vxgedev *vdev = NULL;
4358 struct net_device *dev;
4359 int i = 0;
4360#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4361 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4362 u32 level_trace;
4363#endif
4364
4365 hldev = (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4366
4367 if (hldev == NULL)
4368 return;
4369 dev = hldev->ndev;
4370 vdev = netdev_priv(dev);
4371
4372#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4373 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4374 level_trace = vdev->level_trace;
4375#endif
4376 vxge_debug_entryexit(level_trace,
4377 "%s:%d", __func__, __LINE__);
4378
4379 vxge_debug_init(level_trace,
4380 "%s : removing PCI device...", __func__);
4381 vxge_device_unregister(hldev);
4382
4383 for (i = 0; i < vdev->no_of_vpath; i++) {
4384 vxge_free_mac_add_list(&vdev->vpaths[i]);
4385 vdev->vpaths[i].mcast_addr_cnt = 0;
4386 vdev->vpaths[i].mac_addr_cnt = 0;
4387 }
4388
4389 kfree(vdev->vpaths);
4390
4391 iounmap(vdev->bar0);
703da5a1 4392
5dbc9011
SS		 4393 pci_disable_sriov(pdev);
4394
703da5a1
RV		 4395 /* we are safe to free it now */
4396 free_netdev(dev);
4397
4398 vxge_debug_init(level_trace,
4399 "%s:%d Device unregistered", __func__, __LINE__);
4400
4401 vxge_hw_device_terminate(hldev);
4402
4403 pci_disable_device(pdev);
4404 pci_release_regions(pdev);
4405 pci_set_drvdata(pdev, NULL);
4406 vxge_debug_entryexit(level_trace,
4407 "%s:%d Exiting...", __func__, __LINE__);
4408}
4409
4410static struct pci_error_handlers vxge_err_handler = {
4411 .error_detected = vxge_io_error_detected,
4412 .slot_reset = vxge_io_slot_reset,
4413 .resume = vxge_io_resume,
4414};
4415
4416static struct pci_driver vxge_driver = {
4417 .name = VXGE_DRIVER_NAME,
4418 .id_table = vxge_id_table,
4419 .probe = vxge_probe,
4420 .remove = __devexit_p(vxge_remove),
4421#ifdef CONFIG_PM
4422 .suspend = vxge_pm_suspend,
4423 .resume = vxge_pm_resume,
4424#endif
4425 .err_handler = &vxge_err_handler,
4426};
4427
4428static int __init
4429vxge_starter(void)
4430{
4431 int ret = 0;
703da5a1 4432
75f5e1c6
JP		 4433 pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4434 pr_info("Driver version: %s\n", DRV_VERSION);
703da5a1
RV		 4435
4436 verify_bandwidth();
4437
4438 driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4439 if (!driver_config)
4440 return -ENOMEM;
4441
4442 ret = pci_register_driver(&vxge_driver);
4443
4444 if (driver_config->config_dev_cnt &&
4445 (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4446 vxge_debug_init(VXGE_ERR,
4447 "%s: Configured %d of %d devices",
4448 VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4449 driver_config->total_dev_cnt);
4450
4451 if (ret)
4452 kfree(driver_config);
4453
4454 return ret;
4455}
4456
4457static void __exit
4458vxge_closer(void)
4459{
4460 pci_unregister_driver(&vxge_driver);
4461 kfree(driver_config);
4462}
4463module_init(vxge_starter);
4464module_exit(vxge_closer);
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