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qlge: Remove debug junk from asic reset logic.
[deliverable/linux.git] / drivers / net / qlge / qlge_main.c
1 /*
2 * QLogic qlge NIC HBA Driver
3 * Copyright (c) 2003-2008 QLogic Corporation
4 * See LICENSE.qlge for copyright and licensing details.
5 * Author: Linux qlge network device driver by
6 * Ron Mercer <ron.mercer@qlogic.com>
7 */
8 #include <linux/kernel.h>
9 #include <linux/init.h>
10 #include <linux/types.h>
11 #include <linux/module.h>
12 #include <linux/list.h>
13 #include <linux/pci.h>
14 #include <linux/dma-mapping.h>
15 #include <linux/pagemap.h>
16 #include <linux/sched.h>
17 #include <linux/slab.h>
18 #include <linux/dmapool.h>
19 #include <linux/mempool.h>
20 #include <linux/spinlock.h>
21 #include <linux/kthread.h>
22 #include <linux/interrupt.h>
23 #include <linux/errno.h>
24 #include <linux/ioport.h>
25 #include <linux/in.h>
26 #include <linux/ip.h>
27 #include <linux/ipv6.h>
28 #include <net/ipv6.h>
29 #include <linux/tcp.h>
30 #include <linux/udp.h>
31 #include <linux/if_arp.h>
32 #include <linux/if_ether.h>
33 #include <linux/netdevice.h>
34 #include <linux/etherdevice.h>
35 #include <linux/ethtool.h>
36 #include <linux/skbuff.h>
37 #include <linux/rtnetlink.h>
38 #include <linux/if_vlan.h>
39 #include <linux/delay.h>
40 #include <linux/mm.h>
41 #include <linux/vmalloc.h>
42 #include <net/ip6_checksum.h>
43
44 #include "qlge.h"
45
46 char qlge_driver_name[] = DRV_NAME;
47 const char qlge_driver_version[] = DRV_VERSION;
48
49 MODULE_AUTHOR("Ron Mercer <ron.mercer@qlogic.com>");
50 MODULE_DESCRIPTION(DRV_STRING " ");
51 MODULE_LICENSE("GPL");
52 MODULE_VERSION(DRV_VERSION);
53
54 static const u32 default_msg =
55 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK |
56 /* NETIF_MSG_TIMER | */
57 NETIF_MSG_IFDOWN |
58 NETIF_MSG_IFUP |
59 NETIF_MSG_RX_ERR |
60 NETIF_MSG_TX_ERR |
61 /* NETIF_MSG_TX_QUEUED | */
62 /* NETIF_MSG_INTR | NETIF_MSG_TX_DONE | NETIF_MSG_RX_STATUS | */
63 /* NETIF_MSG_PKTDATA | */
64 NETIF_MSG_HW | NETIF_MSG_WOL | 0;
65
66 static int debug = 0x00007fff; /* defaults above */
67 module_param(debug, int, 0);
68 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
69
70 #define MSIX_IRQ 0
71 #define MSI_IRQ 1
72 #define LEG_IRQ 2
73 static int irq_type = MSIX_IRQ;
74 module_param(irq_type, int, MSIX_IRQ);
75 MODULE_PARM_DESC(irq_type, "0 = MSI-X, 1 = MSI, 2 = Legacy.");
76
77 static struct pci_device_id qlge_pci_tbl[] __devinitdata = {
78 {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QLGE_DEVICE_ID_8012)},
79 {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QLGE_DEVICE_ID_8000)},
80 /* required last entry */
81 {0,}
82 };
83
84 MODULE_DEVICE_TABLE(pci, qlge_pci_tbl);
85
86 /* This hardware semaphore causes exclusive access to
87 * resources shared between the NIC driver, MPI firmware,
88 * FCOE firmware and the FC driver.
89 */
90 static int ql_sem_trylock(struct ql_adapter *qdev, u32 sem_mask)
91 {
92 u32 sem_bits = 0;
93
94 switch (sem_mask) {
95 case SEM_XGMAC0_MASK:
96 sem_bits = SEM_SET << SEM_XGMAC0_SHIFT;
97 break;
98 case SEM_XGMAC1_MASK:
99 sem_bits = SEM_SET << SEM_XGMAC1_SHIFT;
100 break;
101 case SEM_ICB_MASK:
102 sem_bits = SEM_SET << SEM_ICB_SHIFT;
103 break;
104 case SEM_MAC_ADDR_MASK:
105 sem_bits = SEM_SET << SEM_MAC_ADDR_SHIFT;
106 break;
107 case SEM_FLASH_MASK:
108 sem_bits = SEM_SET << SEM_FLASH_SHIFT;
109 break;
110 case SEM_PROBE_MASK:
111 sem_bits = SEM_SET << SEM_PROBE_SHIFT;
112 break;
113 case SEM_RT_IDX_MASK:
114 sem_bits = SEM_SET << SEM_RT_IDX_SHIFT;
115 break;
116 case SEM_PROC_REG_MASK:
117 sem_bits = SEM_SET << SEM_PROC_REG_SHIFT;
118 break;
119 default:
120 QPRINTK(qdev, PROBE, ALERT, "Bad Semaphore mask!.\n");
121 return -EINVAL;
122 }
123
124 ql_write32(qdev, SEM, sem_bits | sem_mask);
125 return !(ql_read32(qdev, SEM) & sem_bits);
126 }
127
128 int ql_sem_spinlock(struct ql_adapter *qdev, u32 sem_mask)
129 {
130 unsigned int wait_count = 30;
131 do {
132 if (!ql_sem_trylock(qdev, sem_mask))
133 return 0;
134 udelay(100);
135 } while (--wait_count);
136 return -ETIMEDOUT;
137 }
138
139 void ql_sem_unlock(struct ql_adapter *qdev, u32 sem_mask)
140 {
141 ql_write32(qdev, SEM, sem_mask);
142 ql_read32(qdev, SEM); /* flush */
143 }
144
145 /* This function waits for a specific bit to come ready
146 * in a given register. It is used mostly by the initialize
147 * process, but is also used in kernel thread API such as
148 * netdev->set_multi, netdev->set_mac_address, netdev->vlan_rx_add_vid.
149 */
150 int ql_wait_reg_rdy(struct ql_adapter *qdev, u32 reg, u32 bit, u32 err_bit)
151 {
152 u32 temp;
153 int count = UDELAY_COUNT;
154
155 while (count) {
156 temp = ql_read32(qdev, reg);
157
158 /* check for errors */
159 if (temp & err_bit) {
160 QPRINTK(qdev, PROBE, ALERT,
161 "register 0x%.08x access error, value = 0x%.08x!.\n",
162 reg, temp);
163 return -EIO;
164 } else if (temp & bit)
165 return 0;
166 udelay(UDELAY_DELAY);
167 count--;
168 }
169 QPRINTK(qdev, PROBE, ALERT,
170 "Timed out waiting for reg %x to come ready.\n", reg);
171 return -ETIMEDOUT;
172 }
173
174 /* The CFG register is used to download TX and RX control blocks
175 * to the chip. This function waits for an operation to complete.
176 */
177 static int ql_wait_cfg(struct ql_adapter *qdev, u32 bit)
178 {
179 int count = UDELAY_COUNT;
180 u32 temp;
181
182 while (count) {
183 temp = ql_read32(qdev, CFG);
184 if (temp & CFG_LE)
185 return -EIO;
186 if (!(temp & bit))
187 return 0;
188 udelay(UDELAY_DELAY);
189 count--;
190 }
191 return -ETIMEDOUT;
192 }
193
194
195 /* Used to issue init control blocks to hw. Maps control block,
196 * sets address, triggers download, waits for completion.
197 */
198 int ql_write_cfg(struct ql_adapter *qdev, void *ptr, int size, u32 bit,
199 u16 q_id)
200 {
201 u64 map;
202 int status = 0;
203 int direction;
204 u32 mask;
205 u32 value;
206
207 direction =
208 (bit & (CFG_LRQ | CFG_LR | CFG_LCQ)) ? PCI_DMA_TODEVICE :
209 PCI_DMA_FROMDEVICE;
210
211 map = pci_map_single(qdev->pdev, ptr, size, direction);
212 if (pci_dma_mapping_error(qdev->pdev, map)) {
213 QPRINTK(qdev, IFUP, ERR, "Couldn't map DMA area.\n");
214 return -ENOMEM;
215 }
216
217 status = ql_wait_cfg(qdev, bit);
218 if (status) {
219 QPRINTK(qdev, IFUP, ERR,
220 "Timed out waiting for CFG to come ready.\n");
221 goto exit;
222 }
223
224 status = ql_sem_spinlock(qdev, SEM_ICB_MASK);
225 if (status)
226 goto exit;
227 ql_write32(qdev, ICB_L, (u32) map);
228 ql_write32(qdev, ICB_H, (u32) (map >> 32));
229 ql_sem_unlock(qdev, SEM_ICB_MASK); /* does flush too */
230
231 mask = CFG_Q_MASK | (bit << 16);
232 value = bit | (q_id << CFG_Q_SHIFT);
233 ql_write32(qdev, CFG, (mask | value));
234
235 /*
236 * Wait for the bit to clear after signaling hw.
237 */
238 status = ql_wait_cfg(qdev, bit);
239 exit:
240 pci_unmap_single(qdev->pdev, map, size, direction);
241 return status;
242 }
243
244 /* Get a specific MAC address from the CAM. Used for debug and reg dump. */
245 int ql_get_mac_addr_reg(struct ql_adapter *qdev, u32 type, u16 index,
246 u32 *value)
247 {
248 u32 offset = 0;
249 int status;
250
251 switch (type) {
252 case MAC_ADDR_TYPE_MULTI_MAC:
253 case MAC_ADDR_TYPE_CAM_MAC:
254 {
255 status =
256 ql_wait_reg_rdy(qdev,
257 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
258 if (status)
259 goto exit;
260 ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
261 (index << MAC_ADDR_IDX_SHIFT) | /* index */
262 MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
263 status =
264 ql_wait_reg_rdy(qdev,
265 MAC_ADDR_IDX, MAC_ADDR_MR, 0);
266 if (status)
267 goto exit;
268 *value++ = ql_read32(qdev, MAC_ADDR_DATA);
269 status =
270 ql_wait_reg_rdy(qdev,
271 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
272 if (status)
273 goto exit;
274 ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
275 (index << MAC_ADDR_IDX_SHIFT) | /* index */
276 MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
277 status =
278 ql_wait_reg_rdy(qdev,
279 MAC_ADDR_IDX, MAC_ADDR_MR, 0);
280 if (status)
281 goto exit;
282 *value++ = ql_read32(qdev, MAC_ADDR_DATA);
283 if (type == MAC_ADDR_TYPE_CAM_MAC) {
284 status =
285 ql_wait_reg_rdy(qdev,
286 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
287 if (status)
288 goto exit;
289 ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
290 (index << MAC_ADDR_IDX_SHIFT) | /* index */
291 MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
292 status =
293 ql_wait_reg_rdy(qdev, MAC_ADDR_IDX,
294 MAC_ADDR_MR, 0);
295 if (status)
296 goto exit;
297 *value++ = ql_read32(qdev, MAC_ADDR_DATA);
298 }
299 break;
300 }
301 case MAC_ADDR_TYPE_VLAN:
302 case MAC_ADDR_TYPE_MULTI_FLTR:
303 default:
304 QPRINTK(qdev, IFUP, CRIT,
305 "Address type %d not yet supported.\n", type);
306 status = -EPERM;
307 }
308 exit:
309 return status;
310 }
311
312 /* Set up a MAC, multicast or VLAN address for the
313 * inbound frame matching.
314 */
315 static int ql_set_mac_addr_reg(struct ql_adapter *qdev, u8 *addr, u32 type,
316 u16 index)
317 {
318 u32 offset = 0;
319 int status = 0;
320
321 switch (type) {
322 case MAC_ADDR_TYPE_MULTI_MAC:
323 case MAC_ADDR_TYPE_CAM_MAC:
324 {
325 u32 cam_output;
326 u32 upper = (addr[0] << 8) | addr[1];
327 u32 lower =
328 (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) |
329 (addr[5]);
330
331 QPRINTK(qdev, IFUP, DEBUG,
332 "Adding %s address %pM"
333 " at index %d in the CAM.\n",
334 ((type ==
335 MAC_ADDR_TYPE_MULTI_MAC) ? "MULTICAST" :
336 "UNICAST"), addr, index);
337
338 status =
339 ql_wait_reg_rdy(qdev,
340 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
341 if (status)
342 goto exit;
343 ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
344 (index << MAC_ADDR_IDX_SHIFT) | /* index */
345 type); /* type */
346 ql_write32(qdev, MAC_ADDR_DATA, lower);
347 status =
348 ql_wait_reg_rdy(qdev,
349 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
350 if (status)
351 goto exit;
352 ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
353 (index << MAC_ADDR_IDX_SHIFT) | /* index */
354 type); /* type */
355 ql_write32(qdev, MAC_ADDR_DATA, upper);
356 status =
357 ql_wait_reg_rdy(qdev,
358 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
359 if (status)
360 goto exit;
361 ql_write32(qdev, MAC_ADDR_IDX, (offset) | /* offset */
362 (index << MAC_ADDR_IDX_SHIFT) | /* index */
363 type); /* type */
364 /* This field should also include the queue id
365 and possibly the function id. Right now we hardcode
366 the route field to NIC core.
367 */
368 if (type == MAC_ADDR_TYPE_CAM_MAC) {
369 cam_output = (CAM_OUT_ROUTE_NIC |
370 (qdev->
371 func << CAM_OUT_FUNC_SHIFT) |
372 (qdev->
373 rss_ring_first_cq_id <<
374 CAM_OUT_CQ_ID_SHIFT));
375 if (qdev->vlgrp)
376 cam_output |= CAM_OUT_RV;
377 /* route to NIC core */
378 ql_write32(qdev, MAC_ADDR_DATA, cam_output);
379 }
380 break;
381 }
382 case MAC_ADDR_TYPE_VLAN:
383 {
384 u32 enable_bit = *((u32 *) &addr[0]);
385 /* For VLAN, the addr actually holds a bit that
386 * either enables or disables the vlan id we are
387 * addressing. It's either MAC_ADDR_E on or off.
388 * That's bit-27 we're talking about.
389 */
390 QPRINTK(qdev, IFUP, INFO, "%s VLAN ID %d %s the CAM.\n",
391 (enable_bit ? "Adding" : "Removing"),
392 index, (enable_bit ? "to" : "from"));
393
394 status =
395 ql_wait_reg_rdy(qdev,
396 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
397 if (status)
398 goto exit;
399 ql_write32(qdev, MAC_ADDR_IDX, offset | /* offset */
400 (index << MAC_ADDR_IDX_SHIFT) | /* index */
401 type | /* type */
402 enable_bit); /* enable/disable */
403 break;
404 }
405 case MAC_ADDR_TYPE_MULTI_FLTR:
406 default:
407 QPRINTK(qdev, IFUP, CRIT,
408 "Address type %d not yet supported.\n", type);
409 status = -EPERM;
410 }
411 exit:
412 return status;
413 }
414
415 /* Get a specific frame routing value from the CAM.
416 * Used for debug and reg dump.
417 */
418 int ql_get_routing_reg(struct ql_adapter *qdev, u32 index, u32 *value)
419 {
420 int status = 0;
421
422 status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0);
423 if (status)
424 goto exit;
425
426 ql_write32(qdev, RT_IDX,
427 RT_IDX_TYPE_NICQ | RT_IDX_RS | (index << RT_IDX_IDX_SHIFT));
428 status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MR, 0);
429 if (status)
430 goto exit;
431 *value = ql_read32(qdev, RT_DATA);
432 exit:
433 return status;
434 }
435
436 /* The NIC function for this chip has 16 routing indexes. Each one can be used
437 * to route different frame types to various inbound queues. We send broadcast/
438 * multicast/error frames to the default queue for slow handling,
439 * and CAM hit/RSS frames to the fast handling queues.
440 */
441 static int ql_set_routing_reg(struct ql_adapter *qdev, u32 index, u32 mask,
442 int enable)
443 {
444 int status = -EINVAL; /* Return error if no mask match. */
445 u32 value = 0;
446
447 QPRINTK(qdev, IFUP, DEBUG,
448 "%s %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s mask %s the routing reg.\n",
449 (enable ? "Adding" : "Removing"),
450 ((index == RT_IDX_ALL_ERR_SLOT) ? "MAC ERROR/ALL ERROR" : ""),
451 ((index == RT_IDX_IP_CSUM_ERR_SLOT) ? "IP CSUM ERROR" : ""),
452 ((index ==
453 RT_IDX_TCP_UDP_CSUM_ERR_SLOT) ? "TCP/UDP CSUM ERROR" : ""),
454 ((index == RT_IDX_BCAST_SLOT) ? "BROADCAST" : ""),
455 ((index == RT_IDX_MCAST_MATCH_SLOT) ? "MULTICAST MATCH" : ""),
456 ((index == RT_IDX_ALLMULTI_SLOT) ? "ALL MULTICAST MATCH" : ""),
457 ((index == RT_IDX_UNUSED6_SLOT) ? "UNUSED6" : ""),
458 ((index == RT_IDX_UNUSED7_SLOT) ? "UNUSED7" : ""),
459 ((index == RT_IDX_RSS_MATCH_SLOT) ? "RSS ALL/IPV4 MATCH" : ""),
460 ((index == RT_IDX_RSS_IPV6_SLOT) ? "RSS IPV6" : ""),
461 ((index == RT_IDX_RSS_TCP4_SLOT) ? "RSS TCP4" : ""),
462 ((index == RT_IDX_RSS_TCP6_SLOT) ? "RSS TCP6" : ""),
463 ((index == RT_IDX_CAM_HIT_SLOT) ? "CAM HIT" : ""),
464 ((index == RT_IDX_UNUSED013) ? "UNUSED13" : ""),
465 ((index == RT_IDX_UNUSED014) ? "UNUSED14" : ""),
466 ((index == RT_IDX_PROMISCUOUS_SLOT) ? "PROMISCUOUS" : ""),
467 (enable ? "to" : "from"));
468
469 switch (mask) {
470 case RT_IDX_CAM_HIT:
471 {
472 value = RT_IDX_DST_CAM_Q | /* dest */
473 RT_IDX_TYPE_NICQ | /* type */
474 (RT_IDX_CAM_HIT_SLOT << RT_IDX_IDX_SHIFT);/* index */
475 break;
476 }
477 case RT_IDX_VALID: /* Promiscuous Mode frames. */
478 {
479 value = RT_IDX_DST_DFLT_Q | /* dest */
480 RT_IDX_TYPE_NICQ | /* type */
481 (RT_IDX_PROMISCUOUS_SLOT << RT_IDX_IDX_SHIFT);/* index */
482 break;
483 }
484 case RT_IDX_ERR: /* Pass up MAC,IP,TCP/UDP error frames. */
485 {
486 value = RT_IDX_DST_DFLT_Q | /* dest */
487 RT_IDX_TYPE_NICQ | /* type */
488 (RT_IDX_ALL_ERR_SLOT << RT_IDX_IDX_SHIFT);/* index */
489 break;
490 }
491 case RT_IDX_BCAST: /* Pass up Broadcast frames to default Q. */
492 {
493 value = RT_IDX_DST_DFLT_Q | /* dest */
494 RT_IDX_TYPE_NICQ | /* type */
495 (RT_IDX_BCAST_SLOT << RT_IDX_IDX_SHIFT);/* index */
496 break;
497 }
498 case RT_IDX_MCAST: /* Pass up All Multicast frames. */
499 {
500 value = RT_IDX_DST_CAM_Q | /* dest */
501 RT_IDX_TYPE_NICQ | /* type */
502 (RT_IDX_ALLMULTI_SLOT << RT_IDX_IDX_SHIFT);/* index */
503 break;
504 }
505 case RT_IDX_MCAST_MATCH: /* Pass up matched Multicast frames. */
506 {
507 value = RT_IDX_DST_CAM_Q | /* dest */
508 RT_IDX_TYPE_NICQ | /* type */
509 (RT_IDX_MCAST_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
510 break;
511 }
512 case RT_IDX_RSS_MATCH: /* Pass up matched RSS frames. */
513 {
514 value = RT_IDX_DST_RSS | /* dest */
515 RT_IDX_TYPE_NICQ | /* type */
516 (RT_IDX_RSS_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
517 break;
518 }
519 case 0: /* Clear the E-bit on an entry. */
520 {
521 value = RT_IDX_DST_DFLT_Q | /* dest */
522 RT_IDX_TYPE_NICQ | /* type */
523 (index << RT_IDX_IDX_SHIFT);/* index */
524 break;
525 }
526 default:
527 QPRINTK(qdev, IFUP, ERR, "Mask type %d not yet supported.\n",
528 mask);
529 status = -EPERM;
530 goto exit;
531 }
532
533 if (value) {
534 status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0);
535 if (status)
536 goto exit;
537 value |= (enable ? RT_IDX_E : 0);
538 ql_write32(qdev, RT_IDX, value);
539 ql_write32(qdev, RT_DATA, enable ? mask : 0);
540 }
541 exit:
542 return status;
543 }
544
545 static void ql_enable_interrupts(struct ql_adapter *qdev)
546 {
547 ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16) | INTR_EN_EI);
548 }
549
550 static void ql_disable_interrupts(struct ql_adapter *qdev)
551 {
552 ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16));
553 }
554
555 /* If we're running with multiple MSI-X vectors then we enable on the fly.
556 * Otherwise, we may have multiple outstanding workers and don't want to
557 * enable until the last one finishes. In this case, the irq_cnt gets
558 * incremented everytime we queue a worker and decremented everytime
559 * a worker finishes. Once it hits zero we enable the interrupt.
560 */
561 u32 ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
562 {
563 u32 var = 0;
564 unsigned long hw_flags = 0;
565 struct intr_context *ctx = qdev->intr_context + intr;
566
567 if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr)) {
568 /* Always enable if we're MSIX multi interrupts and
569 * it's not the default (zeroeth) interrupt.
570 */
571 ql_write32(qdev, INTR_EN,
572 ctx->intr_en_mask);
573 var = ql_read32(qdev, STS);
574 return var;
575 }
576
577 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
578 if (atomic_dec_and_test(&ctx->irq_cnt)) {
579 ql_write32(qdev, INTR_EN,
580 ctx->intr_en_mask);
581 var = ql_read32(qdev, STS);
582 }
583 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
584 return var;
585 }
586
587 static u32 ql_disable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
588 {
589 u32 var = 0;
590 unsigned long hw_flags;
591 struct intr_context *ctx;
592
593 /* HW disables for us if we're MSIX multi interrupts and
594 * it's not the default (zeroeth) interrupt.
595 */
596 if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr))
597 return 0;
598
599 ctx = qdev->intr_context + intr;
600 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
601 if (!atomic_read(&ctx->irq_cnt)) {
602 ql_write32(qdev, INTR_EN,
603 ctx->intr_dis_mask);
604 var = ql_read32(qdev, STS);
605 }
606 atomic_inc(&ctx->irq_cnt);
607 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
608 return var;
609 }
610
611 static void ql_enable_all_completion_interrupts(struct ql_adapter *qdev)
612 {
613 int i;
614 for (i = 0; i < qdev->intr_count; i++) {
615 /* The enable call does a atomic_dec_and_test
616 * and enables only if the result is zero.
617 * So we precharge it here.
618 */
619 if (unlikely(!test_bit(QL_MSIX_ENABLED, &qdev->flags) ||
620 i == 0))
621 atomic_set(&qdev->intr_context[i].irq_cnt, 1);
622 ql_enable_completion_interrupt(qdev, i);
623 }
624
625 }
626
627 static int ql_validate_flash(struct ql_adapter *qdev, u32 size, const char *str)
628 {
629 int status, i;
630 u16 csum = 0;
631 __le16 *flash = (__le16 *)&qdev->flash;
632
633 status = strncmp((char *)&qdev->flash, str, 4);
634 if (status) {
635 QPRINTK(qdev, IFUP, ERR, "Invalid flash signature.\n");
636 return status;
637 }
638
639 for (i = 0; i < size; i++)
640 csum += le16_to_cpu(*flash++);
641
642 if (csum)
643 QPRINTK(qdev, IFUP, ERR,
644 "Invalid flash checksum, csum = 0x%.04x.\n", csum);
645
646 return csum;
647 }
648
649 static int ql_read_flash_word(struct ql_adapter *qdev, int offset, __le32 *data)
650 {
651 int status = 0;
652 /* wait for reg to come ready */
653 status = ql_wait_reg_rdy(qdev,
654 FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
655 if (status)
656 goto exit;
657 /* set up for reg read */
658 ql_write32(qdev, FLASH_ADDR, FLASH_ADDR_R | offset);
659 /* wait for reg to come ready */
660 status = ql_wait_reg_rdy(qdev,
661 FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
662 if (status)
663 goto exit;
664 /* This data is stored on flash as an array of
665 * __le32. Since ql_read32() returns cpu endian
666 * we need to swap it back.
667 */
668 *data = cpu_to_le32(ql_read32(qdev, FLASH_DATA));
669 exit:
670 return status;
671 }
672
673 static int ql_get_8000_flash_params(struct ql_adapter *qdev)
674 {
675 u32 i, size;
676 int status;
677 __le32 *p = (__le32 *)&qdev->flash;
678 u32 offset;
679
680 /* Get flash offset for function and adjust
681 * for dword access.
682 */
683 if (!qdev->func)
684 offset = FUNC0_FLASH_OFFSET / sizeof(u32);
685 else
686 offset = FUNC1_FLASH_OFFSET / sizeof(u32);
687
688 if (ql_sem_spinlock(qdev, SEM_FLASH_MASK))
689 return -ETIMEDOUT;
690
691 size = sizeof(struct flash_params_8000) / sizeof(u32);
692 for (i = 0; i < size; i++, p++) {
693 status = ql_read_flash_word(qdev, i+offset, p);
694 if (status) {
695 QPRINTK(qdev, IFUP, ERR, "Error reading flash.\n");
696 goto exit;
697 }
698 }
699
700 status = ql_validate_flash(qdev,
701 sizeof(struct flash_params_8000) / sizeof(u16),
702 "8000");
703 if (status) {
704 QPRINTK(qdev, IFUP, ERR, "Invalid flash.\n");
705 status = -EINVAL;
706 goto exit;
707 }
708
709 if (!is_valid_ether_addr(qdev->flash.flash_params_8000.mac_addr)) {
710 QPRINTK(qdev, IFUP, ERR, "Invalid MAC address.\n");
711 status = -EINVAL;
712 goto exit;
713 }
714
715 memcpy(qdev->ndev->dev_addr,
716 qdev->flash.flash_params_8000.mac_addr,
717 qdev->ndev->addr_len);
718
719 exit:
720 ql_sem_unlock(qdev, SEM_FLASH_MASK);
721 return status;
722 }
723
724 static int ql_get_8012_flash_params(struct ql_adapter *qdev)
725 {
726 int i;
727 int status;
728 __le32 *p = (__le32 *)&qdev->flash;
729 u32 offset = 0;
730 u32 size = sizeof(struct flash_params_8012) / sizeof(u32);
731
732 /* Second function's parameters follow the first
733 * function's.
734 */
735 if (qdev->func)
736 offset = size;
737
738 if (ql_sem_spinlock(qdev, SEM_FLASH_MASK))
739 return -ETIMEDOUT;
740
741 for (i = 0; i < size; i++, p++) {
742 status = ql_read_flash_word(qdev, i+offset, p);
743 if (status) {
744 QPRINTK(qdev, IFUP, ERR, "Error reading flash.\n");
745 goto exit;
746 }
747
748 }
749
750 status = ql_validate_flash(qdev,
751 sizeof(struct flash_params_8012) / sizeof(u16),
752 "8012");
753 if (status) {
754 QPRINTK(qdev, IFUP, ERR, "Invalid flash.\n");
755 status = -EINVAL;
756 goto exit;
757 }
758
759 if (!is_valid_ether_addr(qdev->flash.flash_params_8012.mac_addr)) {
760 status = -EINVAL;
761 goto exit;
762 }
763
764 memcpy(qdev->ndev->dev_addr,
765 qdev->flash.flash_params_8012.mac_addr,
766 qdev->ndev->addr_len);
767
768 exit:
769 ql_sem_unlock(qdev, SEM_FLASH_MASK);
770 return status;
771 }
772
773 /* xgmac register are located behind the xgmac_addr and xgmac_data
774 * register pair. Each read/write requires us to wait for the ready
775 * bit before reading/writing the data.
776 */
777 static int ql_write_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 data)
778 {
779 int status;
780 /* wait for reg to come ready */
781 status = ql_wait_reg_rdy(qdev,
782 XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
783 if (status)
784 return status;
785 /* write the data to the data reg */
786 ql_write32(qdev, XGMAC_DATA, data);
787 /* trigger the write */
788 ql_write32(qdev, XGMAC_ADDR, reg);
789 return status;
790 }
791
792 /* xgmac register are located behind the xgmac_addr and xgmac_data
793 * register pair. Each read/write requires us to wait for the ready
794 * bit before reading/writing the data.
795 */
796 int ql_read_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
797 {
798 int status = 0;
799 /* wait for reg to come ready */
800 status = ql_wait_reg_rdy(qdev,
801 XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
802 if (status)
803 goto exit;
804 /* set up for reg read */
805 ql_write32(qdev, XGMAC_ADDR, reg | XGMAC_ADDR_R);
806 /* wait for reg to come ready */
807 status = ql_wait_reg_rdy(qdev,
808 XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
809 if (status)
810 goto exit;
811 /* get the data */
812 *data = ql_read32(qdev, XGMAC_DATA);
813 exit:
814 return status;
815 }
816
817 /* This is used for reading the 64-bit statistics regs. */
818 int ql_read_xgmac_reg64(struct ql_adapter *qdev, u32 reg, u64 *data)
819 {
820 int status = 0;
821 u32 hi = 0;
822 u32 lo = 0;
823
824 status = ql_read_xgmac_reg(qdev, reg, &lo);
825 if (status)
826 goto exit;
827
828 status = ql_read_xgmac_reg(qdev, reg + 4, &hi);
829 if (status)
830 goto exit;
831
832 *data = (u64) lo | ((u64) hi << 32);
833
834 exit:
835 return status;
836 }
837
838 static int ql_8000_port_initialize(struct ql_adapter *qdev)
839 {
840 int status;
841 status = ql_mb_get_fw_state(qdev);
842 if (status)
843 goto exit;
844 /* Wake up a worker to get/set the TX/RX frame sizes. */
845 queue_delayed_work(qdev->workqueue, &qdev->mpi_port_cfg_work, 0);
846 exit:
847 return status;
848 }
849
850 /* Take the MAC Core out of reset.
851 * Enable statistics counting.
852 * Take the transmitter/receiver out of reset.
853 * This functionality may be done in the MPI firmware at a
854 * later date.
855 */
856 static int ql_8012_port_initialize(struct ql_adapter *qdev)
857 {
858 int status = 0;
859 u32 data;
860
861 if (ql_sem_trylock(qdev, qdev->xg_sem_mask)) {
862 /* Another function has the semaphore, so
863 * wait for the port init bit to come ready.
864 */
865 QPRINTK(qdev, LINK, INFO,
866 "Another function has the semaphore, so wait for the port init bit to come ready.\n");
867 status = ql_wait_reg_rdy(qdev, STS, qdev->port_init, 0);
868 if (status) {
869 QPRINTK(qdev, LINK, CRIT,
870 "Port initialize timed out.\n");
871 }
872 return status;
873 }
874
875 QPRINTK(qdev, LINK, INFO, "Got xgmac semaphore!.\n");
876 /* Set the core reset. */
877 status = ql_read_xgmac_reg(qdev, GLOBAL_CFG, &data);
878 if (status)
879 goto end;
880 data |= GLOBAL_CFG_RESET;
881 status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
882 if (status)
883 goto end;
884
885 /* Clear the core reset and turn on jumbo for receiver. */
886 data &= ~GLOBAL_CFG_RESET; /* Clear core reset. */
887 data |= GLOBAL_CFG_JUMBO; /* Turn on jumbo. */
888 data |= GLOBAL_CFG_TX_STAT_EN;
889 data |= GLOBAL_CFG_RX_STAT_EN;
890 status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
891 if (status)
892 goto end;
893
894 /* Enable transmitter, and clear it's reset. */
895 status = ql_read_xgmac_reg(qdev, TX_CFG, &data);
896 if (status)
897 goto end;
898 data &= ~TX_CFG_RESET; /* Clear the TX MAC reset. */
899 data |= TX_CFG_EN; /* Enable the transmitter. */
900 status = ql_write_xgmac_reg(qdev, TX_CFG, data);
901 if (status)
902 goto end;
903
904 /* Enable receiver and clear it's reset. */
905 status = ql_read_xgmac_reg(qdev, RX_CFG, &data);
906 if (status)
907 goto end;
908 data &= ~RX_CFG_RESET; /* Clear the RX MAC reset. */
909 data |= RX_CFG_EN; /* Enable the receiver. */
910 status = ql_write_xgmac_reg(qdev, RX_CFG, data);
911 if (status)
912 goto end;
913
914 /* Turn on jumbo. */
915 status =
916 ql_write_xgmac_reg(qdev, MAC_TX_PARAMS, MAC_TX_PARAMS_JUMBO | (0x2580 << 16));
917 if (status)
918 goto end;
919 status =
920 ql_write_xgmac_reg(qdev, MAC_RX_PARAMS, 0x2580);
921 if (status)
922 goto end;
923
924 /* Signal to the world that the port is enabled. */
925 ql_write32(qdev, STS, ((qdev->port_init << 16) | qdev->port_init));
926 end:
927 ql_sem_unlock(qdev, qdev->xg_sem_mask);
928 return status;
929 }
930
931 /* Get the next large buffer. */
932 static struct bq_desc *ql_get_curr_lbuf(struct rx_ring *rx_ring)
933 {
934 struct bq_desc *lbq_desc = &rx_ring->lbq[rx_ring->lbq_curr_idx];
935 rx_ring->lbq_curr_idx++;
936 if (rx_ring->lbq_curr_idx == rx_ring->lbq_len)
937 rx_ring->lbq_curr_idx = 0;
938 rx_ring->lbq_free_cnt++;
939 return lbq_desc;
940 }
941
942 /* Get the next small buffer. */
943 static struct bq_desc *ql_get_curr_sbuf(struct rx_ring *rx_ring)
944 {
945 struct bq_desc *sbq_desc = &rx_ring->sbq[rx_ring->sbq_curr_idx];
946 rx_ring->sbq_curr_idx++;
947 if (rx_ring->sbq_curr_idx == rx_ring->sbq_len)
948 rx_ring->sbq_curr_idx = 0;
949 rx_ring->sbq_free_cnt++;
950 return sbq_desc;
951 }
952
953 /* Update an rx ring index. */
954 static void ql_update_cq(struct rx_ring *rx_ring)
955 {
956 rx_ring->cnsmr_idx++;
957 rx_ring->curr_entry++;
958 if (unlikely(rx_ring->cnsmr_idx == rx_ring->cq_len)) {
959 rx_ring->cnsmr_idx = 0;
960 rx_ring->curr_entry = rx_ring->cq_base;
961 }
962 }
963
964 static void ql_write_cq_idx(struct rx_ring *rx_ring)
965 {
966 ql_write_db_reg(rx_ring->cnsmr_idx, rx_ring->cnsmr_idx_db_reg);
967 }
968
969 /* Process (refill) a large buffer queue. */
970 static void ql_update_lbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
971 {
972 u32 clean_idx = rx_ring->lbq_clean_idx;
973 u32 start_idx = clean_idx;
974 struct bq_desc *lbq_desc;
975 u64 map;
976 int i;
977
978 while (rx_ring->lbq_free_cnt > 16) {
979 for (i = 0; i < 16; i++) {
980 QPRINTK(qdev, RX_STATUS, DEBUG,
981 "lbq: try cleaning clean_idx = %d.\n",
982 clean_idx);
983 lbq_desc = &rx_ring->lbq[clean_idx];
984 if (lbq_desc->p.lbq_page == NULL) {
985 QPRINTK(qdev, RX_STATUS, DEBUG,
986 "lbq: getting new page for index %d.\n",
987 lbq_desc->index);
988 lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
989 if (lbq_desc->p.lbq_page == NULL) {
990 rx_ring->lbq_clean_idx = clean_idx;
991 QPRINTK(qdev, RX_STATUS, ERR,
992 "Couldn't get a page.\n");
993 return;
994 }
995 map = pci_map_page(qdev->pdev,
996 lbq_desc->p.lbq_page,
997 0, PAGE_SIZE,
998 PCI_DMA_FROMDEVICE);
999 if (pci_dma_mapping_error(qdev->pdev, map)) {
1000 rx_ring->lbq_clean_idx = clean_idx;
1001 put_page(lbq_desc->p.lbq_page);
1002 lbq_desc->p.lbq_page = NULL;
1003 QPRINTK(qdev, RX_STATUS, ERR,
1004 "PCI mapping failed.\n");
1005 return;
1006 }
1007 pci_unmap_addr_set(lbq_desc, mapaddr, map);
1008 pci_unmap_len_set(lbq_desc, maplen, PAGE_SIZE);
1009 *lbq_desc->addr = cpu_to_le64(map);
1010 }
1011 clean_idx++;
1012 if (clean_idx == rx_ring->lbq_len)
1013 clean_idx = 0;
1014 }
1015
1016 rx_ring->lbq_clean_idx = clean_idx;
1017 rx_ring->lbq_prod_idx += 16;
1018 if (rx_ring->lbq_prod_idx == rx_ring->lbq_len)
1019 rx_ring->lbq_prod_idx = 0;
1020 rx_ring->lbq_free_cnt -= 16;
1021 }
1022
1023 if (start_idx != clean_idx) {
1024 QPRINTK(qdev, RX_STATUS, DEBUG,
1025 "lbq: updating prod idx = %d.\n",
1026 rx_ring->lbq_prod_idx);
1027 ql_write_db_reg(rx_ring->lbq_prod_idx,
1028 rx_ring->lbq_prod_idx_db_reg);
1029 }
1030 }
1031
1032 /* Process (refill) a small buffer queue. */
1033 static void ql_update_sbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
1034 {
1035 u32 clean_idx = rx_ring->sbq_clean_idx;
1036 u32 start_idx = clean_idx;
1037 struct bq_desc *sbq_desc;
1038 u64 map;
1039 int i;
1040
1041 while (rx_ring->sbq_free_cnt > 16) {
1042 for (i = 0; i < 16; i++) {
1043 sbq_desc = &rx_ring->sbq[clean_idx];
1044 QPRINTK(qdev, RX_STATUS, DEBUG,
1045 "sbq: try cleaning clean_idx = %d.\n",
1046 clean_idx);
1047 if (sbq_desc->p.skb == NULL) {
1048 QPRINTK(qdev, RX_STATUS, DEBUG,
1049 "sbq: getting new skb for index %d.\n",
1050 sbq_desc->index);
1051 sbq_desc->p.skb =
1052 netdev_alloc_skb(qdev->ndev,
1053 rx_ring->sbq_buf_size);
1054 if (sbq_desc->p.skb == NULL) {
1055 QPRINTK(qdev, PROBE, ERR,
1056 "Couldn't get an skb.\n");
1057 rx_ring->sbq_clean_idx = clean_idx;
1058 return;
1059 }
1060 skb_reserve(sbq_desc->p.skb, QLGE_SB_PAD);
1061 map = pci_map_single(qdev->pdev,
1062 sbq_desc->p.skb->data,
1063 rx_ring->sbq_buf_size /
1064 2, PCI_DMA_FROMDEVICE);
1065 if (pci_dma_mapping_error(qdev->pdev, map)) {
1066 QPRINTK(qdev, IFUP, ERR, "PCI mapping failed.\n");
1067 rx_ring->sbq_clean_idx = clean_idx;
1068 dev_kfree_skb_any(sbq_desc->p.skb);
1069 sbq_desc->p.skb = NULL;
1070 return;
1071 }
1072 pci_unmap_addr_set(sbq_desc, mapaddr, map);
1073 pci_unmap_len_set(sbq_desc, maplen,
1074 rx_ring->sbq_buf_size / 2);
1075 *sbq_desc->addr = cpu_to_le64(map);
1076 }
1077
1078 clean_idx++;
1079 if (clean_idx == rx_ring->sbq_len)
1080 clean_idx = 0;
1081 }
1082 rx_ring->sbq_clean_idx = clean_idx;
1083 rx_ring->sbq_prod_idx += 16;
1084 if (rx_ring->sbq_prod_idx == rx_ring->sbq_len)
1085 rx_ring->sbq_prod_idx = 0;
1086 rx_ring->sbq_free_cnt -= 16;
1087 }
1088
1089 if (start_idx != clean_idx) {
1090 QPRINTK(qdev, RX_STATUS, DEBUG,
1091 "sbq: updating prod idx = %d.\n",
1092 rx_ring->sbq_prod_idx);
1093 ql_write_db_reg(rx_ring->sbq_prod_idx,
1094 rx_ring->sbq_prod_idx_db_reg);
1095 }
1096 }
1097
1098 static void ql_update_buffer_queues(struct ql_adapter *qdev,
1099 struct rx_ring *rx_ring)
1100 {
1101 ql_update_sbq(qdev, rx_ring);
1102 ql_update_lbq(qdev, rx_ring);
1103 }
1104
1105 /* Unmaps tx buffers. Can be called from send() if a pci mapping
1106 * fails at some stage, or from the interrupt when a tx completes.
1107 */
1108 static void ql_unmap_send(struct ql_adapter *qdev,
1109 struct tx_ring_desc *tx_ring_desc, int mapped)
1110 {
1111 int i;
1112 for (i = 0; i < mapped; i++) {
1113 if (i == 0 || (i == 7 && mapped > 7)) {
1114 /*
1115 * Unmap the skb->data area, or the
1116 * external sglist (AKA the Outbound
1117 * Address List (OAL)).
1118 * If its the zeroeth element, then it's
1119 * the skb->data area. If it's the 7th
1120 * element and there is more than 6 frags,
1121 * then its an OAL.
1122 */
1123 if (i == 7) {
1124 QPRINTK(qdev, TX_DONE, DEBUG,
1125 "unmapping OAL area.\n");
1126 }
1127 pci_unmap_single(qdev->pdev,
1128 pci_unmap_addr(&tx_ring_desc->map[i],
1129 mapaddr),
1130 pci_unmap_len(&tx_ring_desc->map[i],
1131 maplen),
1132 PCI_DMA_TODEVICE);
1133 } else {
1134 QPRINTK(qdev, TX_DONE, DEBUG, "unmapping frag %d.\n",
1135 i);
1136 pci_unmap_page(qdev->pdev,
1137 pci_unmap_addr(&tx_ring_desc->map[i],
1138 mapaddr),
1139 pci_unmap_len(&tx_ring_desc->map[i],
1140 maplen), PCI_DMA_TODEVICE);
1141 }
1142 }
1143
1144 }
1145
1146 /* Map the buffers for this transmit. This will return
1147 * NETDEV_TX_BUSY or NETDEV_TX_OK based on success.
1148 */
1149 static int ql_map_send(struct ql_adapter *qdev,
1150 struct ob_mac_iocb_req *mac_iocb_ptr,
1151 struct sk_buff *skb, struct tx_ring_desc *tx_ring_desc)
1152 {
1153 int len = skb_headlen(skb);
1154 dma_addr_t map;
1155 int frag_idx, err, map_idx = 0;
1156 struct tx_buf_desc *tbd = mac_iocb_ptr->tbd;
1157 int frag_cnt = skb_shinfo(skb)->nr_frags;
1158
1159 if (frag_cnt) {
1160 QPRINTK(qdev, TX_QUEUED, DEBUG, "frag_cnt = %d.\n", frag_cnt);
1161 }
1162 /*
1163 * Map the skb buffer first.
1164 */
1165 map = pci_map_single(qdev->pdev, skb->data, len, PCI_DMA_TODEVICE);
1166
1167 err = pci_dma_mapping_error(qdev->pdev, map);
1168 if (err) {
1169 QPRINTK(qdev, TX_QUEUED, ERR,
1170 "PCI mapping failed with error: %d\n", err);
1171
1172 return NETDEV_TX_BUSY;
1173 }
1174
1175 tbd->len = cpu_to_le32(len);
1176 tbd->addr = cpu_to_le64(map);
1177 pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
1178 pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen, len);
1179 map_idx++;
1180
1181 /*
1182 * This loop fills the remainder of the 8 address descriptors
1183 * in the IOCB. If there are more than 7 fragments, then the
1184 * eighth address desc will point to an external list (OAL).
1185 * When this happens, the remainder of the frags will be stored
1186 * in this list.
1187 */
1188 for (frag_idx = 0; frag_idx < frag_cnt; frag_idx++, map_idx++) {
1189 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_idx];
1190 tbd++;
1191 if (frag_idx == 6 && frag_cnt > 7) {
1192 /* Let's tack on an sglist.
1193 * Our control block will now
1194 * look like this:
1195 * iocb->seg[0] = skb->data
1196 * iocb->seg[1] = frag[0]
1197 * iocb->seg[2] = frag[1]
1198 * iocb->seg[3] = frag[2]
1199 * iocb->seg[4] = frag[3]
1200 * iocb->seg[5] = frag[4]
1201 * iocb->seg[6] = frag[5]
1202 * iocb->seg[7] = ptr to OAL (external sglist)
1203 * oal->seg[0] = frag[6]
1204 * oal->seg[1] = frag[7]
1205 * oal->seg[2] = frag[8]
1206 * oal->seg[3] = frag[9]
1207 * oal->seg[4] = frag[10]
1208 * etc...
1209 */
1210 /* Tack on the OAL in the eighth segment of IOCB. */
1211 map = pci_map_single(qdev->pdev, &tx_ring_desc->oal,
1212 sizeof(struct oal),
1213 PCI_DMA_TODEVICE);
1214 err = pci_dma_mapping_error(qdev->pdev, map);
1215 if (err) {
1216 QPRINTK(qdev, TX_QUEUED, ERR,
1217 "PCI mapping outbound address list with error: %d\n",
1218 err);
1219 goto map_error;
1220 }
1221
1222 tbd->addr = cpu_to_le64(map);
1223 /*
1224 * The length is the number of fragments
1225 * that remain to be mapped times the length
1226 * of our sglist (OAL).
1227 */
1228 tbd->len =
1229 cpu_to_le32((sizeof(struct tx_buf_desc) *
1230 (frag_cnt - frag_idx)) | TX_DESC_C);
1231 pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr,
1232 map);
1233 pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
1234 sizeof(struct oal));
1235 tbd = (struct tx_buf_desc *)&tx_ring_desc->oal;
1236 map_idx++;
1237 }
1238
1239 map =
1240 pci_map_page(qdev->pdev, frag->page,
1241 frag->page_offset, frag->size,
1242 PCI_DMA_TODEVICE);
1243
1244 err = pci_dma_mapping_error(qdev->pdev, map);
1245 if (err) {
1246 QPRINTK(qdev, TX_QUEUED, ERR,
1247 "PCI mapping frags failed with error: %d.\n",
1248 err);
1249 goto map_error;
1250 }
1251
1252 tbd->addr = cpu_to_le64(map);
1253 tbd->len = cpu_to_le32(frag->size);
1254 pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
1255 pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
1256 frag->size);
1257
1258 }
1259 /* Save the number of segments we've mapped. */
1260 tx_ring_desc->map_cnt = map_idx;
1261 /* Terminate the last segment. */
1262 tbd->len = cpu_to_le32(le32_to_cpu(tbd->len) | TX_DESC_E);
1263 return NETDEV_TX_OK;
1264
1265 map_error:
1266 /*
1267 * If the first frag mapping failed, then i will be zero.
1268 * This causes the unmap of the skb->data area. Otherwise
1269 * we pass in the number of frags that mapped successfully
1270 * so they can be umapped.
1271 */
1272 ql_unmap_send(qdev, tx_ring_desc, map_idx);
1273 return NETDEV_TX_BUSY;
1274 }
1275
1276 static void ql_realign_skb(struct sk_buff *skb, int len)
1277 {
1278 void *temp_addr = skb->data;
1279
1280 /* Undo the skb_reserve(skb,32) we did before
1281 * giving to hardware, and realign data on
1282 * a 2-byte boundary.
1283 */
1284 skb->data -= QLGE_SB_PAD - NET_IP_ALIGN;
1285 skb->tail -= QLGE_SB_PAD - NET_IP_ALIGN;
1286 skb_copy_to_linear_data(skb, temp_addr,
1287 (unsigned int)len);
1288 }
1289
1290 /*
1291 * This function builds an skb for the given inbound
1292 * completion. It will be rewritten for readability in the near
1293 * future, but for not it works well.
1294 */
1295 static struct sk_buff *ql_build_rx_skb(struct ql_adapter *qdev,
1296 struct rx_ring *rx_ring,
1297 struct ib_mac_iocb_rsp *ib_mac_rsp)
1298 {
1299 struct bq_desc *lbq_desc;
1300 struct bq_desc *sbq_desc;
1301 struct sk_buff *skb = NULL;
1302 u32 length = le32_to_cpu(ib_mac_rsp->data_len);
1303 u32 hdr_len = le32_to_cpu(ib_mac_rsp->hdr_len);
1304
1305 /*
1306 * Handle the header buffer if present.
1307 */
1308 if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HV &&
1309 ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
1310 QPRINTK(qdev, RX_STATUS, DEBUG, "Header of %d bytes in small buffer.\n", hdr_len);
1311 /*
1312 * Headers fit nicely into a small buffer.
1313 */
1314 sbq_desc = ql_get_curr_sbuf(rx_ring);
1315 pci_unmap_single(qdev->pdev,
1316 pci_unmap_addr(sbq_desc, mapaddr),
1317 pci_unmap_len(sbq_desc, maplen),
1318 PCI_DMA_FROMDEVICE);
1319 skb = sbq_desc->p.skb;
1320 ql_realign_skb(skb, hdr_len);
1321 skb_put(skb, hdr_len);
1322 sbq_desc->p.skb = NULL;
1323 }
1324
1325 /*
1326 * Handle the data buffer(s).
1327 */
1328 if (unlikely(!length)) { /* Is there data too? */
1329 QPRINTK(qdev, RX_STATUS, DEBUG,
1330 "No Data buffer in this packet.\n");
1331 return skb;
1332 }
1333
1334 if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DS) {
1335 if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
1336 QPRINTK(qdev, RX_STATUS, DEBUG,
1337 "Headers in small, data of %d bytes in small, combine them.\n", length);
1338 /*
1339 * Data is less than small buffer size so it's
1340 * stuffed in a small buffer.
1341 * For this case we append the data
1342 * from the "data" small buffer to the "header" small
1343 * buffer.
1344 */
1345 sbq_desc = ql_get_curr_sbuf(rx_ring);
1346 pci_dma_sync_single_for_cpu(qdev->pdev,
1347 pci_unmap_addr
1348 (sbq_desc, mapaddr),
1349 pci_unmap_len
1350 (sbq_desc, maplen),
1351 PCI_DMA_FROMDEVICE);
1352 memcpy(skb_put(skb, length),
1353 sbq_desc->p.skb->data, length);
1354 pci_dma_sync_single_for_device(qdev->pdev,
1355 pci_unmap_addr
1356 (sbq_desc,
1357 mapaddr),
1358 pci_unmap_len
1359 (sbq_desc,
1360 maplen),
1361 PCI_DMA_FROMDEVICE);
1362 } else {
1363 QPRINTK(qdev, RX_STATUS, DEBUG,
1364 "%d bytes in a single small buffer.\n", length);
1365 sbq_desc = ql_get_curr_sbuf(rx_ring);
1366 skb = sbq_desc->p.skb;
1367 ql_realign_skb(skb, length);
1368 skb_put(skb, length);
1369 pci_unmap_single(qdev->pdev,
1370 pci_unmap_addr(sbq_desc,
1371 mapaddr),
1372 pci_unmap_len(sbq_desc,
1373 maplen),
1374 PCI_DMA_FROMDEVICE);
1375 sbq_desc->p.skb = NULL;
1376 }
1377 } else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) {
1378 if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
1379 QPRINTK(qdev, RX_STATUS, DEBUG,
1380 "Header in small, %d bytes in large. Chain large to small!\n", length);
1381 /*
1382 * The data is in a single large buffer. We
1383 * chain it to the header buffer's skb and let
1384 * it rip.
1385 */
1386 lbq_desc = ql_get_curr_lbuf(rx_ring);
1387 pci_unmap_page(qdev->pdev,
1388 pci_unmap_addr(lbq_desc,
1389 mapaddr),
1390 pci_unmap_len(lbq_desc, maplen),
1391 PCI_DMA_FROMDEVICE);
1392 QPRINTK(qdev, RX_STATUS, DEBUG,
1393 "Chaining page to skb.\n");
1394 skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
1395 0, length);
1396 skb->len += length;
1397 skb->data_len += length;
1398 skb->truesize += length;
1399 lbq_desc->p.lbq_page = NULL;
1400 } else {
1401 /*
1402 * The headers and data are in a single large buffer. We
1403 * copy it to a new skb and let it go. This can happen with
1404 * jumbo mtu on a non-TCP/UDP frame.
1405 */
1406 lbq_desc = ql_get_curr_lbuf(rx_ring);
1407 skb = netdev_alloc_skb(qdev->ndev, length);
1408 if (skb == NULL) {
1409 QPRINTK(qdev, PROBE, DEBUG,
1410 "No skb available, drop the packet.\n");
1411 return NULL;
1412 }
1413 pci_unmap_page(qdev->pdev,
1414 pci_unmap_addr(lbq_desc,
1415 mapaddr),
1416 pci_unmap_len(lbq_desc, maplen),
1417 PCI_DMA_FROMDEVICE);
1418 skb_reserve(skb, NET_IP_ALIGN);
1419 QPRINTK(qdev, RX_STATUS, DEBUG,
1420 "%d bytes of headers and data in large. Chain page to new skb and pull tail.\n", length);
1421 skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
1422 0, length);
1423 skb->len += length;
1424 skb->data_len += length;
1425 skb->truesize += length;
1426 length -= length;
1427 lbq_desc->p.lbq_page = NULL;
1428 __pskb_pull_tail(skb,
1429 (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
1430 VLAN_ETH_HLEN : ETH_HLEN);
1431 }
1432 } else {
1433 /*
1434 * The data is in a chain of large buffers
1435 * pointed to by a small buffer. We loop
1436 * thru and chain them to the our small header
1437 * buffer's skb.
1438 * frags: There are 18 max frags and our small
1439 * buffer will hold 32 of them. The thing is,
1440 * we'll use 3 max for our 9000 byte jumbo
1441 * frames. If the MTU goes up we could
1442 * eventually be in trouble.
1443 */
1444 int size, offset, i = 0;
1445 __le64 *bq, bq_array[8];
1446 sbq_desc = ql_get_curr_sbuf(rx_ring);
1447 pci_unmap_single(qdev->pdev,
1448 pci_unmap_addr(sbq_desc, mapaddr),
1449 pci_unmap_len(sbq_desc, maplen),
1450 PCI_DMA_FROMDEVICE);
1451 if (!(ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS)) {
1452 /*
1453 * This is an non TCP/UDP IP frame, so
1454 * the headers aren't split into a small
1455 * buffer. We have to use the small buffer
1456 * that contains our sg list as our skb to
1457 * send upstairs. Copy the sg list here to
1458 * a local buffer and use it to find the
1459 * pages to chain.
1460 */
1461 QPRINTK(qdev, RX_STATUS, DEBUG,
1462 "%d bytes of headers & data in chain of large.\n", length);
1463 skb = sbq_desc->p.skb;
1464 bq = &bq_array[0];
1465 memcpy(bq, skb->data, sizeof(bq_array));
1466 sbq_desc->p.skb = NULL;
1467 skb_reserve(skb, NET_IP_ALIGN);
1468 } else {
1469 QPRINTK(qdev, RX_STATUS, DEBUG,
1470 "Headers in small, %d bytes of data in chain of large.\n", length);
1471 bq = (__le64 *)sbq_desc->p.skb->data;
1472 }
1473 while (length > 0) {
1474 lbq_desc = ql_get_curr_lbuf(rx_ring);
1475 pci_unmap_page(qdev->pdev,
1476 pci_unmap_addr(lbq_desc,
1477 mapaddr),
1478 pci_unmap_len(lbq_desc,
1479 maplen),
1480 PCI_DMA_FROMDEVICE);
1481 size = (length < PAGE_SIZE) ? length : PAGE_SIZE;
1482 offset = 0;
1483
1484 QPRINTK(qdev, RX_STATUS, DEBUG,
1485 "Adding page %d to skb for %d bytes.\n",
1486 i, size);
1487 skb_fill_page_desc(skb, i, lbq_desc->p.lbq_page,
1488 offset, size);
1489 skb->len += size;
1490 skb->data_len += size;
1491 skb->truesize += size;
1492 length -= size;
1493 lbq_desc->p.lbq_page = NULL;
1494 bq++;
1495 i++;
1496 }
1497 __pskb_pull_tail(skb, (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
1498 VLAN_ETH_HLEN : ETH_HLEN);
1499 }
1500 return skb;
1501 }
1502
1503 /* Process an inbound completion from an rx ring. */
1504 static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
1505 struct rx_ring *rx_ring,
1506 struct ib_mac_iocb_rsp *ib_mac_rsp)
1507 {
1508 struct net_device *ndev = qdev->ndev;
1509 struct sk_buff *skb = NULL;
1510
1511 QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
1512
1513 skb = ql_build_rx_skb(qdev, rx_ring, ib_mac_rsp);
1514 if (unlikely(!skb)) {
1515 QPRINTK(qdev, RX_STATUS, DEBUG,
1516 "No skb available, drop packet.\n");
1517 return;
1518 }
1519
1520 prefetch(skb->data);
1521 skb->dev = ndev;
1522 if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {
1523 QPRINTK(qdev, RX_STATUS, DEBUG, "%s%s%s Multicast.\n",
1524 (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
1525 IB_MAC_IOCB_RSP_M_HASH ? "Hash" : "",
1526 (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
1527 IB_MAC_IOCB_RSP_M_REG ? "Registered" : "",
1528 (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
1529 IB_MAC_IOCB_RSP_M_PROM ? "Promiscuous" : "");
1530 }
1531 if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_P) {
1532 QPRINTK(qdev, RX_STATUS, DEBUG, "Promiscuous Packet.\n");
1533 }
1534 if (ib_mac_rsp->flags1 & (IB_MAC_IOCB_RSP_IE | IB_MAC_IOCB_RSP_TE)) {
1535 QPRINTK(qdev, RX_STATUS, ERR,
1536 "Bad checksum for this %s packet.\n",
1537 ((ib_mac_rsp->
1538 flags2 & IB_MAC_IOCB_RSP_T) ? "TCP" : "UDP"));
1539 skb->ip_summed = CHECKSUM_NONE;
1540 } else if (qdev->rx_csum &&
1541 ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) ||
1542 ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
1543 !(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_NU)))) {
1544 QPRINTK(qdev, RX_STATUS, DEBUG, "RX checksum done!\n");
1545 skb->ip_summed = CHECKSUM_UNNECESSARY;
1546 }
1547 qdev->stats.rx_packets++;
1548 qdev->stats.rx_bytes += skb->len;
1549 skb->protocol = eth_type_trans(skb, ndev);
1550 skb_record_rx_queue(skb, rx_ring - &qdev->rx_ring[0]);
1551 if (qdev->vlgrp && (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V)) {
1552 QPRINTK(qdev, RX_STATUS, DEBUG,
1553 "Passing a VLAN packet upstream.\n");
1554 vlan_hwaccel_receive_skb(skb, qdev->vlgrp,
1555 le16_to_cpu(ib_mac_rsp->vlan_id));
1556 } else {
1557 QPRINTK(qdev, RX_STATUS, DEBUG,
1558 "Passing a normal packet upstream.\n");
1559 netif_receive_skb(skb);
1560 }
1561 }
1562
1563 /* Process an outbound completion from an rx ring. */
1564 static void ql_process_mac_tx_intr(struct ql_adapter *qdev,
1565 struct ob_mac_iocb_rsp *mac_rsp)
1566 {
1567 struct tx_ring *tx_ring;
1568 struct tx_ring_desc *tx_ring_desc;
1569
1570 QL_DUMP_OB_MAC_RSP(mac_rsp);
1571 tx_ring = &qdev->tx_ring[mac_rsp->txq_idx];
1572 tx_ring_desc = &tx_ring->q[mac_rsp->tid];
1573 ql_unmap_send(qdev, tx_ring_desc, tx_ring_desc->map_cnt);
1574 qdev->stats.tx_bytes += tx_ring_desc->map_cnt;
1575 qdev->stats.tx_packets++;
1576 dev_kfree_skb(tx_ring_desc->skb);
1577 tx_ring_desc->skb = NULL;
1578
1579 if (unlikely(mac_rsp->flags1 & (OB_MAC_IOCB_RSP_E |
1580 OB_MAC_IOCB_RSP_S |
1581 OB_MAC_IOCB_RSP_L |
1582 OB_MAC_IOCB_RSP_P | OB_MAC_IOCB_RSP_B))) {
1583 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_E) {
1584 QPRINTK(qdev, TX_DONE, WARNING,
1585 "Total descriptor length did not match transfer length.\n");
1586 }
1587 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_S) {
1588 QPRINTK(qdev, TX_DONE, WARNING,
1589 "Frame too short to be legal, not sent.\n");
1590 }
1591 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_L) {
1592 QPRINTK(qdev, TX_DONE, WARNING,
1593 "Frame too long, but sent anyway.\n");
1594 }
1595 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_B) {
1596 QPRINTK(qdev, TX_DONE, WARNING,
1597 "PCI backplane error. Frame not sent.\n");
1598 }
1599 }
1600 atomic_inc(&tx_ring->tx_count);
1601 }
1602
1603 /* Fire up a handler to reset the MPI processor. */
1604 void ql_queue_fw_error(struct ql_adapter *qdev)
1605 {
1606 netif_stop_queue(qdev->ndev);
1607 netif_carrier_off(qdev->ndev);
1608 queue_delayed_work(qdev->workqueue, &qdev->mpi_reset_work, 0);
1609 }
1610
1611 void ql_queue_asic_error(struct ql_adapter *qdev)
1612 {
1613 netif_stop_queue(qdev->ndev);
1614 netif_carrier_off(qdev->ndev);
1615 ql_disable_interrupts(qdev);
1616 /* Clear adapter up bit to signal the recovery
1617 * process that it shouldn't kill the reset worker
1618 * thread
1619 */
1620 clear_bit(QL_ADAPTER_UP, &qdev->flags);
1621 queue_delayed_work(qdev->workqueue, &qdev->asic_reset_work, 0);
1622 }
1623
1624 static void ql_process_chip_ae_intr(struct ql_adapter *qdev,
1625 struct ib_ae_iocb_rsp *ib_ae_rsp)
1626 {
1627 switch (ib_ae_rsp->event) {
1628 case MGMT_ERR_EVENT:
1629 QPRINTK(qdev, RX_ERR, ERR,
1630 "Management Processor Fatal Error.\n");
1631 ql_queue_fw_error(qdev);
1632 return;
1633
1634 case CAM_LOOKUP_ERR_EVENT:
1635 QPRINTK(qdev, LINK, ERR,
1636 "Multiple CAM hits lookup occurred.\n");
1637 QPRINTK(qdev, DRV, ERR, "This event shouldn't occur.\n");
1638 ql_queue_asic_error(qdev);
1639 return;
1640
1641 case SOFT_ECC_ERROR_EVENT:
1642 QPRINTK(qdev, RX_ERR, ERR, "Soft ECC error detected.\n");
1643 ql_queue_asic_error(qdev);
1644 break;
1645
1646 case PCI_ERR_ANON_BUF_RD:
1647 QPRINTK(qdev, RX_ERR, ERR,
1648 "PCI error occurred when reading anonymous buffers from rx_ring %d.\n",
1649 ib_ae_rsp->q_id);
1650 ql_queue_asic_error(qdev);
1651 break;
1652
1653 default:
1654 QPRINTK(qdev, DRV, ERR, "Unexpected event %d.\n",
1655 ib_ae_rsp->event);
1656 ql_queue_asic_error(qdev);
1657 break;
1658 }
1659 }
1660
1661 static int ql_clean_outbound_rx_ring(struct rx_ring *rx_ring)
1662 {
1663 struct ql_adapter *qdev = rx_ring->qdev;
1664 u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1665 struct ob_mac_iocb_rsp *net_rsp = NULL;
1666 int count = 0;
1667
1668 /* While there are entries in the completion queue. */
1669 while (prod != rx_ring->cnsmr_idx) {
1670
1671 QPRINTK(qdev, RX_STATUS, DEBUG,
1672 "cq_id = %d, prod = %d, cnsmr = %d.\n.", rx_ring->cq_id,
1673 prod, rx_ring->cnsmr_idx);
1674
1675 net_rsp = (struct ob_mac_iocb_rsp *)rx_ring->curr_entry;
1676 rmb();
1677 switch (net_rsp->opcode) {
1678
1679 case OPCODE_OB_MAC_TSO_IOCB:
1680 case OPCODE_OB_MAC_IOCB:
1681 ql_process_mac_tx_intr(qdev, net_rsp);
1682 break;
1683 default:
1684 QPRINTK(qdev, RX_STATUS, DEBUG,
1685 "Hit default case, not handled! dropping the packet, opcode = %x.\n",
1686 net_rsp->opcode);
1687 }
1688 count++;
1689 ql_update_cq(rx_ring);
1690 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1691 }
1692 ql_write_cq_idx(rx_ring);
1693 if (netif_queue_stopped(qdev->ndev) && net_rsp != NULL) {
1694 struct tx_ring *tx_ring = &qdev->tx_ring[net_rsp->txq_idx];
1695 if (atomic_read(&tx_ring->queue_stopped) &&
1696 (atomic_read(&tx_ring->tx_count) > (tx_ring->wq_len / 4)))
1697 /*
1698 * The queue got stopped because the tx_ring was full.
1699 * Wake it up, because it's now at least 25% empty.
1700 */
1701 netif_wake_queue(qdev->ndev);
1702 }
1703
1704 return count;
1705 }
1706
1707 static int ql_clean_inbound_rx_ring(struct rx_ring *rx_ring, int budget)
1708 {
1709 struct ql_adapter *qdev = rx_ring->qdev;
1710 u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1711 struct ql_net_rsp_iocb *net_rsp;
1712 int count = 0;
1713
1714 /* While there are entries in the completion queue. */
1715 while (prod != rx_ring->cnsmr_idx) {
1716
1717 QPRINTK(qdev, RX_STATUS, DEBUG,
1718 "cq_id = %d, prod = %d, cnsmr = %d.\n.", rx_ring->cq_id,
1719 prod, rx_ring->cnsmr_idx);
1720
1721 net_rsp = rx_ring->curr_entry;
1722 rmb();
1723 switch (net_rsp->opcode) {
1724 case OPCODE_IB_MAC_IOCB:
1725 ql_process_mac_rx_intr(qdev, rx_ring,
1726 (struct ib_mac_iocb_rsp *)
1727 net_rsp);
1728 break;
1729
1730 case OPCODE_IB_AE_IOCB:
1731 ql_process_chip_ae_intr(qdev, (struct ib_ae_iocb_rsp *)
1732 net_rsp);
1733 break;
1734 default:
1735 {
1736 QPRINTK(qdev, RX_STATUS, DEBUG,
1737 "Hit default case, not handled! dropping the packet, opcode = %x.\n",
1738 net_rsp->opcode);
1739 }
1740 }
1741 count++;
1742 ql_update_cq(rx_ring);
1743 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1744 if (count == budget)
1745 break;
1746 }
1747 ql_update_buffer_queues(qdev, rx_ring);
1748 ql_write_cq_idx(rx_ring);
1749 return count;
1750 }
1751
1752 static int ql_napi_poll_msix(struct napi_struct *napi, int budget)
1753 {
1754 struct rx_ring *rx_ring = container_of(napi, struct rx_ring, napi);
1755 struct ql_adapter *qdev = rx_ring->qdev;
1756 int work_done = ql_clean_inbound_rx_ring(rx_ring, budget);
1757
1758 QPRINTK(qdev, RX_STATUS, DEBUG, "Enter, NAPI POLL cq_id = %d.\n",
1759 rx_ring->cq_id);
1760
1761 if (work_done < budget) {
1762 __napi_complete(napi);
1763 ql_enable_completion_interrupt(qdev, rx_ring->irq);
1764 }
1765 return work_done;
1766 }
1767
1768 static void ql_vlan_rx_register(struct net_device *ndev, struct vlan_group *grp)
1769 {
1770 struct ql_adapter *qdev = netdev_priv(ndev);
1771
1772 qdev->vlgrp = grp;
1773 if (grp) {
1774 QPRINTK(qdev, IFUP, DEBUG, "Turning on VLAN in NIC_RCV_CFG.\n");
1775 ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK |
1776 NIC_RCV_CFG_VLAN_MATCH_AND_NON);
1777 } else {
1778 QPRINTK(qdev, IFUP, DEBUG,
1779 "Turning off VLAN in NIC_RCV_CFG.\n");
1780 ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK);
1781 }
1782 }
1783
1784 static void ql_vlan_rx_add_vid(struct net_device *ndev, u16 vid)
1785 {
1786 struct ql_adapter *qdev = netdev_priv(ndev);
1787 u32 enable_bit = MAC_ADDR_E;
1788 int status;
1789
1790 status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
1791 if (status)
1792 return;
1793 spin_lock(&qdev->hw_lock);
1794 if (ql_set_mac_addr_reg
1795 (qdev, (u8 *) &enable_bit, MAC_ADDR_TYPE_VLAN, vid)) {
1796 QPRINTK(qdev, IFUP, ERR, "Failed to init vlan address.\n");
1797 }
1798 spin_unlock(&qdev->hw_lock);
1799 ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
1800 }
1801
1802 static void ql_vlan_rx_kill_vid(struct net_device *ndev, u16 vid)
1803 {
1804 struct ql_adapter *qdev = netdev_priv(ndev);
1805 u32 enable_bit = 0;
1806 int status;
1807
1808 status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
1809 if (status)
1810 return;
1811
1812 spin_lock(&qdev->hw_lock);
1813 if (ql_set_mac_addr_reg
1814 (qdev, (u8 *) &enable_bit, MAC_ADDR_TYPE_VLAN, vid)) {
1815 QPRINTK(qdev, IFUP, ERR, "Failed to clear vlan address.\n");
1816 }
1817 spin_unlock(&qdev->hw_lock);
1818 ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
1819
1820 }
1821
1822 /* Worker thread to process a given rx_ring that is dedicated
1823 * to outbound completions.
1824 */
1825 static void ql_tx_clean(struct work_struct *work)
1826 {
1827 struct rx_ring *rx_ring =
1828 container_of(work, struct rx_ring, rx_work.work);
1829 ql_clean_outbound_rx_ring(rx_ring);
1830 ql_enable_completion_interrupt(rx_ring->qdev, rx_ring->irq);
1831
1832 }
1833
1834 /* Worker thread to process a given rx_ring that is dedicated
1835 * to inbound completions.
1836 */
1837 static void ql_rx_clean(struct work_struct *work)
1838 {
1839 struct rx_ring *rx_ring =
1840 container_of(work, struct rx_ring, rx_work.work);
1841 ql_clean_inbound_rx_ring(rx_ring, 64);
1842 ql_enable_completion_interrupt(rx_ring->qdev, rx_ring->irq);
1843 }
1844
1845 /* MSI-X Multiple Vector Interrupt Handler for outbound completions. */
1846 static irqreturn_t qlge_msix_tx_isr(int irq, void *dev_id)
1847 {
1848 struct rx_ring *rx_ring = dev_id;
1849 queue_delayed_work_on(rx_ring->cpu, rx_ring->qdev->q_workqueue,
1850 &rx_ring->rx_work, 0);
1851 return IRQ_HANDLED;
1852 }
1853
1854 /* MSI-X Multiple Vector Interrupt Handler for inbound completions. */
1855 static irqreturn_t qlge_msix_rx_isr(int irq, void *dev_id)
1856 {
1857 struct rx_ring *rx_ring = dev_id;
1858 napi_schedule(&rx_ring->napi);
1859 return IRQ_HANDLED;
1860 }
1861
1862 /* This handles a fatal error, MPI activity, and the default
1863 * rx_ring in an MSI-X multiple vector environment.
1864 * In MSI/Legacy environment it also process the rest of
1865 * the rx_rings.
1866 */
1867 static irqreturn_t qlge_isr(int irq, void *dev_id)
1868 {
1869 struct rx_ring *rx_ring = dev_id;
1870 struct ql_adapter *qdev = rx_ring->qdev;
1871 struct intr_context *intr_context = &qdev->intr_context[0];
1872 u32 var;
1873 int i;
1874 int work_done = 0;
1875
1876 spin_lock(&qdev->hw_lock);
1877 if (atomic_read(&qdev->intr_context[0].irq_cnt)) {
1878 QPRINTK(qdev, INTR, DEBUG, "Shared Interrupt, Not ours!\n");
1879 spin_unlock(&qdev->hw_lock);
1880 return IRQ_NONE;
1881 }
1882 spin_unlock(&qdev->hw_lock);
1883
1884 var = ql_disable_completion_interrupt(qdev, intr_context->intr);
1885
1886 /*
1887 * Check for fatal error.
1888 */
1889 if (var & STS_FE) {
1890 ql_queue_asic_error(qdev);
1891 QPRINTK(qdev, INTR, ERR, "Got fatal error, STS = %x.\n", var);
1892 var = ql_read32(qdev, ERR_STS);
1893 QPRINTK(qdev, INTR, ERR,
1894 "Resetting chip. Error Status Register = 0x%x\n", var);
1895 return IRQ_HANDLED;
1896 }
1897
1898 /*
1899 * Check MPI processor activity.
1900 */
1901 if (var & STS_PI) {
1902 /*
1903 * We've got an async event or mailbox completion.
1904 * Handle it and clear the source of the interrupt.
1905 */
1906 QPRINTK(qdev, INTR, ERR, "Got MPI processor interrupt.\n");
1907 ql_disable_completion_interrupt(qdev, intr_context->intr);
1908 queue_delayed_work_on(smp_processor_id(), qdev->workqueue,
1909 &qdev->mpi_work, 0);
1910 work_done++;
1911 }
1912
1913 /*
1914 * Check the default queue and wake handler if active.
1915 */
1916 rx_ring = &qdev->rx_ring[0];
1917 if (ql_read_sh_reg(rx_ring->prod_idx_sh_reg) != rx_ring->cnsmr_idx) {
1918 QPRINTK(qdev, INTR, INFO, "Waking handler for rx_ring[0].\n");
1919 ql_disable_completion_interrupt(qdev, intr_context->intr);
1920 queue_delayed_work_on(smp_processor_id(), qdev->q_workqueue,
1921 &rx_ring->rx_work, 0);
1922 work_done++;
1923 }
1924
1925 if (!test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
1926 /*
1927 * Start the DPC for each active queue.
1928 */
1929 for (i = 1; i < qdev->rx_ring_count; i++) {
1930 rx_ring = &qdev->rx_ring[i];
1931 if (ql_read_sh_reg(rx_ring->prod_idx_sh_reg) !=
1932 rx_ring->cnsmr_idx) {
1933 QPRINTK(qdev, INTR, INFO,
1934 "Waking handler for rx_ring[%d].\n", i);
1935 ql_disable_completion_interrupt(qdev,
1936 intr_context->
1937 intr);
1938 if (i < qdev->rss_ring_first_cq_id)
1939 queue_delayed_work_on(rx_ring->cpu,
1940 qdev->q_workqueue,
1941 &rx_ring->rx_work,
1942 0);
1943 else
1944 napi_schedule(&rx_ring->napi);
1945 work_done++;
1946 }
1947 }
1948 }
1949 ql_enable_completion_interrupt(qdev, intr_context->intr);
1950 return work_done ? IRQ_HANDLED : IRQ_NONE;
1951 }
1952
1953 static int ql_tso(struct sk_buff *skb, struct ob_mac_tso_iocb_req *mac_iocb_ptr)
1954 {
1955
1956 if (skb_is_gso(skb)) {
1957 int err;
1958 if (skb_header_cloned(skb)) {
1959 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
1960 if (err)
1961 return err;
1962 }
1963
1964 mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
1965 mac_iocb_ptr->flags3 |= OB_MAC_TSO_IOCB_IC;
1966 mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
1967 mac_iocb_ptr->total_hdrs_len =
1968 cpu_to_le16(skb_transport_offset(skb) + tcp_hdrlen(skb));
1969 mac_iocb_ptr->net_trans_offset =
1970 cpu_to_le16(skb_network_offset(skb) |
1971 skb_transport_offset(skb)
1972 << OB_MAC_TRANSPORT_HDR_SHIFT);
1973 mac_iocb_ptr->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1974 mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_LSO;
1975 if (likely(skb->protocol == htons(ETH_P_IP))) {
1976 struct iphdr *iph = ip_hdr(skb);
1977 iph->check = 0;
1978 mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
1979 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1980 iph->daddr, 0,
1981 IPPROTO_TCP,
1982 0);
1983 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1984 mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP6;
1985 tcp_hdr(skb)->check =
1986 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
1987 &ipv6_hdr(skb)->daddr,
1988 0, IPPROTO_TCP, 0);
1989 }
1990 return 1;
1991 }
1992 return 0;
1993 }
1994
1995 static void ql_hw_csum_setup(struct sk_buff *skb,
1996 struct ob_mac_tso_iocb_req *mac_iocb_ptr)
1997 {
1998 int len;
1999 struct iphdr *iph = ip_hdr(skb);
2000 __sum16 *check;
2001 mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
2002 mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
2003 mac_iocb_ptr->net_trans_offset =
2004 cpu_to_le16(skb_network_offset(skb) |
2005 skb_transport_offset(skb) << OB_MAC_TRANSPORT_HDR_SHIFT);
2006
2007 mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
2008 len = (ntohs(iph->tot_len) - (iph->ihl << 2));
2009 if (likely(iph->protocol == IPPROTO_TCP)) {
2010 check = &(tcp_hdr(skb)->check);
2011 mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_TC;
2012 mac_iocb_ptr->total_hdrs_len =
2013 cpu_to_le16(skb_transport_offset(skb) +
2014 (tcp_hdr(skb)->doff << 2));
2015 } else {
2016 check = &(udp_hdr(skb)->check);
2017 mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_UC;
2018 mac_iocb_ptr->total_hdrs_len =
2019 cpu_to_le16(skb_transport_offset(skb) +
2020 sizeof(struct udphdr));
2021 }
2022 *check = ~csum_tcpudp_magic(iph->saddr,
2023 iph->daddr, len, iph->protocol, 0);
2024 }
2025
2026 static int qlge_send(struct sk_buff *skb, struct net_device *ndev)
2027 {
2028 struct tx_ring_desc *tx_ring_desc;
2029 struct ob_mac_iocb_req *mac_iocb_ptr;
2030 struct ql_adapter *qdev = netdev_priv(ndev);
2031 int tso;
2032 struct tx_ring *tx_ring;
2033 u32 tx_ring_idx = (u32) QL_TXQ_IDX(qdev, skb);
2034
2035 tx_ring = &qdev->tx_ring[tx_ring_idx];
2036
2037 if (unlikely(atomic_read(&tx_ring->tx_count) < 2)) {
2038 QPRINTK(qdev, TX_QUEUED, INFO,
2039 "%s: shutting down tx queue %d du to lack of resources.\n",
2040 __func__, tx_ring_idx);
2041 netif_stop_queue(ndev);
2042 atomic_inc(&tx_ring->queue_stopped);
2043 return NETDEV_TX_BUSY;
2044 }
2045 tx_ring_desc = &tx_ring->q[tx_ring->prod_idx];
2046 mac_iocb_ptr = tx_ring_desc->queue_entry;
2047 memset((void *)mac_iocb_ptr, 0, sizeof(mac_iocb_ptr));
2048
2049 mac_iocb_ptr->opcode = OPCODE_OB_MAC_IOCB;
2050 mac_iocb_ptr->tid = tx_ring_desc->index;
2051 /* We use the upper 32-bits to store the tx queue for this IO.
2052 * When we get the completion we can use it to establish the context.
2053 */
2054 mac_iocb_ptr->txq_idx = tx_ring_idx;
2055 tx_ring_desc->skb = skb;
2056
2057 mac_iocb_ptr->frame_len = cpu_to_le16((u16) skb->len);
2058
2059 if (qdev->vlgrp && vlan_tx_tag_present(skb)) {
2060 QPRINTK(qdev, TX_QUEUED, DEBUG, "Adding a vlan tag %d.\n",
2061 vlan_tx_tag_get(skb));
2062 mac_iocb_ptr->flags3 |= OB_MAC_IOCB_V;
2063 mac_iocb_ptr->vlan_tci = cpu_to_le16(vlan_tx_tag_get(skb));
2064 }
2065 tso = ql_tso(skb, (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
2066 if (tso < 0) {
2067 dev_kfree_skb_any(skb);
2068 return NETDEV_TX_OK;
2069 } else if (unlikely(!tso) && (skb->ip_summed == CHECKSUM_PARTIAL)) {
2070 ql_hw_csum_setup(skb,
2071 (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
2072 }
2073 if (ql_map_send(qdev, mac_iocb_ptr, skb, tx_ring_desc) !=
2074 NETDEV_TX_OK) {
2075 QPRINTK(qdev, TX_QUEUED, ERR,
2076 "Could not map the segments.\n");
2077 return NETDEV_TX_BUSY;
2078 }
2079 QL_DUMP_OB_MAC_IOCB(mac_iocb_ptr);
2080 tx_ring->prod_idx++;
2081 if (tx_ring->prod_idx == tx_ring->wq_len)
2082 tx_ring->prod_idx = 0;
2083 wmb();
2084
2085 ql_write_db_reg(tx_ring->prod_idx, tx_ring->prod_idx_db_reg);
2086 ndev->trans_start = jiffies;
2087 QPRINTK(qdev, TX_QUEUED, DEBUG, "tx queued, slot %d, len %d\n",
2088 tx_ring->prod_idx, skb->len);
2089
2090 atomic_dec(&tx_ring->tx_count);
2091 return NETDEV_TX_OK;
2092 }
2093
2094 static void ql_free_shadow_space(struct ql_adapter *qdev)
2095 {
2096 if (qdev->rx_ring_shadow_reg_area) {
2097 pci_free_consistent(qdev->pdev,
2098 PAGE_SIZE,
2099 qdev->rx_ring_shadow_reg_area,
2100 qdev->rx_ring_shadow_reg_dma);
2101 qdev->rx_ring_shadow_reg_area = NULL;
2102 }
2103 if (qdev->tx_ring_shadow_reg_area) {
2104 pci_free_consistent(qdev->pdev,
2105 PAGE_SIZE,
2106 qdev->tx_ring_shadow_reg_area,
2107 qdev->tx_ring_shadow_reg_dma);
2108 qdev->tx_ring_shadow_reg_area = NULL;
2109 }
2110 }
2111
2112 static int ql_alloc_shadow_space(struct ql_adapter *qdev)
2113 {
2114 qdev->rx_ring_shadow_reg_area =
2115 pci_alloc_consistent(qdev->pdev,
2116 PAGE_SIZE, &qdev->rx_ring_shadow_reg_dma);
2117 if (qdev->rx_ring_shadow_reg_area == NULL) {
2118 QPRINTK(qdev, IFUP, ERR,
2119 "Allocation of RX shadow space failed.\n");
2120 return -ENOMEM;
2121 }
2122 qdev->tx_ring_shadow_reg_area =
2123 pci_alloc_consistent(qdev->pdev, PAGE_SIZE,
2124 &qdev->tx_ring_shadow_reg_dma);
2125 if (qdev->tx_ring_shadow_reg_area == NULL) {
2126 QPRINTK(qdev, IFUP, ERR,
2127 "Allocation of TX shadow space failed.\n");
2128 goto err_wqp_sh_area;
2129 }
2130 return 0;
2131
2132 err_wqp_sh_area:
2133 pci_free_consistent(qdev->pdev,
2134 PAGE_SIZE,
2135 qdev->rx_ring_shadow_reg_area,
2136 qdev->rx_ring_shadow_reg_dma);
2137 return -ENOMEM;
2138 }
2139
2140 static void ql_init_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
2141 {
2142 struct tx_ring_desc *tx_ring_desc;
2143 int i;
2144 struct ob_mac_iocb_req *mac_iocb_ptr;
2145
2146 mac_iocb_ptr = tx_ring->wq_base;
2147 tx_ring_desc = tx_ring->q;
2148 for (i = 0; i < tx_ring->wq_len; i++) {
2149 tx_ring_desc->index = i;
2150 tx_ring_desc->skb = NULL;
2151 tx_ring_desc->queue_entry = mac_iocb_ptr;
2152 mac_iocb_ptr++;
2153 tx_ring_desc++;
2154 }
2155 atomic_set(&tx_ring->tx_count, tx_ring->wq_len);
2156 atomic_set(&tx_ring->queue_stopped, 0);
2157 }
2158
2159 static void ql_free_tx_resources(struct ql_adapter *qdev,
2160 struct tx_ring *tx_ring)
2161 {
2162 if (tx_ring->wq_base) {
2163 pci_free_consistent(qdev->pdev, tx_ring->wq_size,
2164 tx_ring->wq_base, tx_ring->wq_base_dma);
2165 tx_ring->wq_base = NULL;
2166 }
2167 kfree(tx_ring->q);
2168 tx_ring->q = NULL;
2169 }
2170
2171 static int ql_alloc_tx_resources(struct ql_adapter *qdev,
2172 struct tx_ring *tx_ring)
2173 {
2174 tx_ring->wq_base =
2175 pci_alloc_consistent(qdev->pdev, tx_ring->wq_size,
2176 &tx_ring->wq_base_dma);
2177
2178 if ((tx_ring->wq_base == NULL)
2179 || tx_ring->wq_base_dma & (tx_ring->wq_size - 1)) {
2180 QPRINTK(qdev, IFUP, ERR, "tx_ring alloc failed.\n");
2181 return -ENOMEM;
2182 }
2183 tx_ring->q =
2184 kmalloc(tx_ring->wq_len * sizeof(struct tx_ring_desc), GFP_KERNEL);
2185 if (tx_ring->q == NULL)
2186 goto err;
2187
2188 return 0;
2189 err:
2190 pci_free_consistent(qdev->pdev, tx_ring->wq_size,
2191 tx_ring->wq_base, tx_ring->wq_base_dma);
2192 return -ENOMEM;
2193 }
2194
2195 static void ql_free_lbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
2196 {
2197 int i;
2198 struct bq_desc *lbq_desc;
2199
2200 for (i = 0; i < rx_ring->lbq_len; i++) {
2201 lbq_desc = &rx_ring->lbq[i];
2202 if (lbq_desc->p.lbq_page) {
2203 pci_unmap_page(qdev->pdev,
2204 pci_unmap_addr(lbq_desc, mapaddr),
2205 pci_unmap_len(lbq_desc, maplen),
2206 PCI_DMA_FROMDEVICE);
2207
2208 put_page(lbq_desc->p.lbq_page);
2209 lbq_desc->p.lbq_page = NULL;
2210 }
2211 }
2212 }
2213
2214 static void ql_free_sbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
2215 {
2216 int i;
2217 struct bq_desc *sbq_desc;
2218
2219 for (i = 0; i < rx_ring->sbq_len; i++) {
2220 sbq_desc = &rx_ring->sbq[i];
2221 if (sbq_desc == NULL) {
2222 QPRINTK(qdev, IFUP, ERR, "sbq_desc %d is NULL.\n", i);
2223 return;
2224 }
2225 if (sbq_desc->p.skb) {
2226 pci_unmap_single(qdev->pdev,
2227 pci_unmap_addr(sbq_desc, mapaddr),
2228 pci_unmap_len(sbq_desc, maplen),
2229 PCI_DMA_FROMDEVICE);
2230 dev_kfree_skb(sbq_desc->p.skb);
2231 sbq_desc->p.skb = NULL;
2232 }
2233 }
2234 }
2235
2236 /* Free all large and small rx buffers associated
2237 * with the completion queues for this device.
2238 */
2239 static void ql_free_rx_buffers(struct ql_adapter *qdev)
2240 {
2241 int i;
2242 struct rx_ring *rx_ring;
2243
2244 for (i = 0; i < qdev->rx_ring_count; i++) {
2245 rx_ring = &qdev->rx_ring[i];
2246 if (rx_ring->lbq)
2247 ql_free_lbq_buffers(qdev, rx_ring);
2248 if (rx_ring->sbq)
2249 ql_free_sbq_buffers(qdev, rx_ring);
2250 }
2251 }
2252
2253 static void ql_alloc_rx_buffers(struct ql_adapter *qdev)
2254 {
2255 struct rx_ring *rx_ring;
2256 int i;
2257
2258 for (i = 0; i < qdev->rx_ring_count; i++) {
2259 rx_ring = &qdev->rx_ring[i];
2260 if (rx_ring->type != TX_Q)
2261 ql_update_buffer_queues(qdev, rx_ring);
2262 }
2263 }
2264
2265 static void ql_init_lbq_ring(struct ql_adapter *qdev,
2266 struct rx_ring *rx_ring)
2267 {
2268 int i;
2269 struct bq_desc *lbq_desc;
2270 __le64 *bq = rx_ring->lbq_base;
2271
2272 memset(rx_ring->lbq, 0, rx_ring->lbq_len * sizeof(struct bq_desc));
2273 for (i = 0; i < rx_ring->lbq_len; i++) {
2274 lbq_desc = &rx_ring->lbq[i];
2275 memset(lbq_desc, 0, sizeof(*lbq_desc));
2276 lbq_desc->index = i;
2277 lbq_desc->addr = bq;
2278 bq++;
2279 }
2280 }
2281
2282 static void ql_init_sbq_ring(struct ql_adapter *qdev,
2283 struct rx_ring *rx_ring)
2284 {
2285 int i;
2286 struct bq_desc *sbq_desc;
2287 __le64 *bq = rx_ring->sbq_base;
2288
2289 memset(rx_ring->sbq, 0, rx_ring->sbq_len * sizeof(struct bq_desc));
2290 for (i = 0; i < rx_ring->sbq_len; i++) {
2291 sbq_desc = &rx_ring->sbq[i];
2292 memset(sbq_desc, 0, sizeof(*sbq_desc));
2293 sbq_desc->index = i;
2294 sbq_desc->addr = bq;
2295 bq++;
2296 }
2297 }
2298
2299 static void ql_free_rx_resources(struct ql_adapter *qdev,
2300 struct rx_ring *rx_ring)
2301 {
2302 /* Free the small buffer queue. */
2303 if (rx_ring->sbq_base) {
2304 pci_free_consistent(qdev->pdev,
2305 rx_ring->sbq_size,
2306 rx_ring->sbq_base, rx_ring->sbq_base_dma);
2307 rx_ring->sbq_base = NULL;
2308 }
2309
2310 /* Free the small buffer queue control blocks. */
2311 kfree(rx_ring->sbq);
2312 rx_ring->sbq = NULL;
2313
2314 /* Free the large buffer queue. */
2315 if (rx_ring->lbq_base) {
2316 pci_free_consistent(qdev->pdev,
2317 rx_ring->lbq_size,
2318 rx_ring->lbq_base, rx_ring->lbq_base_dma);
2319 rx_ring->lbq_base = NULL;
2320 }
2321
2322 /* Free the large buffer queue control blocks. */
2323 kfree(rx_ring->lbq);
2324 rx_ring->lbq = NULL;
2325
2326 /* Free the rx queue. */
2327 if (rx_ring->cq_base) {
2328 pci_free_consistent(qdev->pdev,
2329 rx_ring->cq_size,
2330 rx_ring->cq_base, rx_ring->cq_base_dma);
2331 rx_ring->cq_base = NULL;
2332 }
2333 }
2334
2335 /* Allocate queues and buffers for this completions queue based
2336 * on the values in the parameter structure. */
2337 static int ql_alloc_rx_resources(struct ql_adapter *qdev,
2338 struct rx_ring *rx_ring)
2339 {
2340
2341 /*
2342 * Allocate the completion queue for this rx_ring.
2343 */
2344 rx_ring->cq_base =
2345 pci_alloc_consistent(qdev->pdev, rx_ring->cq_size,
2346 &rx_ring->cq_base_dma);
2347
2348 if (rx_ring->cq_base == NULL) {
2349 QPRINTK(qdev, IFUP, ERR, "rx_ring alloc failed.\n");
2350 return -ENOMEM;
2351 }
2352
2353 if (rx_ring->sbq_len) {
2354 /*
2355 * Allocate small buffer queue.
2356 */
2357 rx_ring->sbq_base =
2358 pci_alloc_consistent(qdev->pdev, rx_ring->sbq_size,
2359 &rx_ring->sbq_base_dma);
2360
2361 if (rx_ring->sbq_base == NULL) {
2362 QPRINTK(qdev, IFUP, ERR,
2363 "Small buffer queue allocation failed.\n");
2364 goto err_mem;
2365 }
2366
2367 /*
2368 * Allocate small buffer queue control blocks.
2369 */
2370 rx_ring->sbq =
2371 kmalloc(rx_ring->sbq_len * sizeof(struct bq_desc),
2372 GFP_KERNEL);
2373 if (rx_ring->sbq == NULL) {
2374 QPRINTK(qdev, IFUP, ERR,
2375 "Small buffer queue control block allocation failed.\n");
2376 goto err_mem;
2377 }
2378
2379 ql_init_sbq_ring(qdev, rx_ring);
2380 }
2381
2382 if (rx_ring->lbq_len) {
2383 /*
2384 * Allocate large buffer queue.
2385 */
2386 rx_ring->lbq_base =
2387 pci_alloc_consistent(qdev->pdev, rx_ring->lbq_size,
2388 &rx_ring->lbq_base_dma);
2389
2390 if (rx_ring->lbq_base == NULL) {
2391 QPRINTK(qdev, IFUP, ERR,
2392 "Large buffer queue allocation failed.\n");
2393 goto err_mem;
2394 }
2395 /*
2396 * Allocate large buffer queue control blocks.
2397 */
2398 rx_ring->lbq =
2399 kmalloc(rx_ring->lbq_len * sizeof(struct bq_desc),
2400 GFP_KERNEL);
2401 if (rx_ring->lbq == NULL) {
2402 QPRINTK(qdev, IFUP, ERR,
2403 "Large buffer queue control block allocation failed.\n");
2404 goto err_mem;
2405 }
2406
2407 ql_init_lbq_ring(qdev, rx_ring);
2408 }
2409
2410 return 0;
2411
2412 err_mem:
2413 ql_free_rx_resources(qdev, rx_ring);
2414 return -ENOMEM;
2415 }
2416
2417 static void ql_tx_ring_clean(struct ql_adapter *qdev)
2418 {
2419 struct tx_ring *tx_ring;
2420 struct tx_ring_desc *tx_ring_desc;
2421 int i, j;
2422
2423 /*
2424 * Loop through all queues and free
2425 * any resources.
2426 */
2427 for (j = 0; j < qdev->tx_ring_count; j++) {
2428 tx_ring = &qdev->tx_ring[j];
2429 for (i = 0; i < tx_ring->wq_len; i++) {
2430 tx_ring_desc = &tx_ring->q[i];
2431 if (tx_ring_desc && tx_ring_desc->skb) {
2432 QPRINTK(qdev, IFDOWN, ERR,
2433 "Freeing lost SKB %p, from queue %d, index %d.\n",
2434 tx_ring_desc->skb, j,
2435 tx_ring_desc->index);
2436 ql_unmap_send(qdev, tx_ring_desc,
2437 tx_ring_desc->map_cnt);
2438 dev_kfree_skb(tx_ring_desc->skb);
2439 tx_ring_desc->skb = NULL;
2440 }
2441 }
2442 }
2443 }
2444
2445 static void ql_free_mem_resources(struct ql_adapter *qdev)
2446 {
2447 int i;
2448
2449 for (i = 0; i < qdev->tx_ring_count; i++)
2450 ql_free_tx_resources(qdev, &qdev->tx_ring[i]);
2451 for (i = 0; i < qdev->rx_ring_count; i++)
2452 ql_free_rx_resources(qdev, &qdev->rx_ring[i]);
2453 ql_free_shadow_space(qdev);
2454 }
2455
2456 static int ql_alloc_mem_resources(struct ql_adapter *qdev)
2457 {
2458 int i;
2459
2460 /* Allocate space for our shadow registers and such. */
2461 if (ql_alloc_shadow_space(qdev))
2462 return -ENOMEM;
2463
2464 for (i = 0; i < qdev->rx_ring_count; i++) {
2465 if (ql_alloc_rx_resources(qdev, &qdev->rx_ring[i]) != 0) {
2466 QPRINTK(qdev, IFUP, ERR,
2467 "RX resource allocation failed.\n");
2468 goto err_mem;
2469 }
2470 }
2471 /* Allocate tx queue resources */
2472 for (i = 0; i < qdev->tx_ring_count; i++) {
2473 if (ql_alloc_tx_resources(qdev, &qdev->tx_ring[i]) != 0) {
2474 QPRINTK(qdev, IFUP, ERR,
2475 "TX resource allocation failed.\n");
2476 goto err_mem;
2477 }
2478 }
2479 return 0;
2480
2481 err_mem:
2482 ql_free_mem_resources(qdev);
2483 return -ENOMEM;
2484 }
2485
2486 /* Set up the rx ring control block and pass it to the chip.
2487 * The control block is defined as
2488 * "Completion Queue Initialization Control Block", or cqicb.
2489 */
2490 static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
2491 {
2492 struct cqicb *cqicb = &rx_ring->cqicb;
2493 void *shadow_reg = qdev->rx_ring_shadow_reg_area +
2494 (rx_ring->cq_id * sizeof(u64) * 4);
2495 u64 shadow_reg_dma = qdev->rx_ring_shadow_reg_dma +
2496 (rx_ring->cq_id * sizeof(u64) * 4);
2497 void __iomem *doorbell_area =
2498 qdev->doorbell_area + (DB_PAGE_SIZE * (128 + rx_ring->cq_id));
2499 int err = 0;
2500 u16 bq_len;
2501
2502 /* Set up the shadow registers for this ring. */
2503 rx_ring->prod_idx_sh_reg = shadow_reg;
2504 rx_ring->prod_idx_sh_reg_dma = shadow_reg_dma;
2505 shadow_reg += sizeof(u64);
2506 shadow_reg_dma += sizeof(u64);
2507 rx_ring->lbq_base_indirect = shadow_reg;
2508 rx_ring->lbq_base_indirect_dma = shadow_reg_dma;
2509 shadow_reg += sizeof(u64);
2510 shadow_reg_dma += sizeof(u64);
2511 rx_ring->sbq_base_indirect = shadow_reg;
2512 rx_ring->sbq_base_indirect_dma = shadow_reg_dma;
2513
2514 /* PCI doorbell mem area + 0x00 for consumer index register */
2515 rx_ring->cnsmr_idx_db_reg = (u32 __iomem *) doorbell_area;
2516 rx_ring->cnsmr_idx = 0;
2517 rx_ring->curr_entry = rx_ring->cq_base;
2518
2519 /* PCI doorbell mem area + 0x04 for valid register */
2520 rx_ring->valid_db_reg = doorbell_area + 0x04;
2521
2522 /* PCI doorbell mem area + 0x18 for large buffer consumer */
2523 rx_ring->lbq_prod_idx_db_reg = (u32 __iomem *) (doorbell_area + 0x18);
2524
2525 /* PCI doorbell mem area + 0x1c */
2526 rx_ring->sbq_prod_idx_db_reg = (u32 __iomem *) (doorbell_area + 0x1c);
2527
2528 memset((void *)cqicb, 0, sizeof(struct cqicb));
2529 cqicb->msix_vect = rx_ring->irq;
2530
2531 bq_len = (rx_ring->cq_len == 65536) ? 0 : (u16) rx_ring->cq_len;
2532 cqicb->len = cpu_to_le16(bq_len | LEN_V | LEN_CPP_CONT);
2533
2534 cqicb->addr = cpu_to_le64(rx_ring->cq_base_dma);
2535
2536 cqicb->prod_idx_addr = cpu_to_le64(rx_ring->prod_idx_sh_reg_dma);
2537
2538 /*
2539 * Set up the control block load flags.
2540 */
2541 cqicb->flags = FLAGS_LC | /* Load queue base address */
2542 FLAGS_LV | /* Load MSI-X vector */
2543 FLAGS_LI; /* Load irq delay values */
2544 if (rx_ring->lbq_len) {
2545 cqicb->flags |= FLAGS_LL; /* Load lbq values */
2546 *((u64 *) rx_ring->lbq_base_indirect) = rx_ring->lbq_base_dma;
2547 cqicb->lbq_addr =
2548 cpu_to_le64(rx_ring->lbq_base_indirect_dma);
2549 bq_len = (rx_ring->lbq_buf_size == 65536) ? 0 :
2550 (u16) rx_ring->lbq_buf_size;
2551 cqicb->lbq_buf_size = cpu_to_le16(bq_len);
2552 bq_len = (rx_ring->lbq_len == 65536) ? 0 :
2553 (u16) rx_ring->lbq_len;
2554 cqicb->lbq_len = cpu_to_le16(bq_len);
2555 rx_ring->lbq_prod_idx = 0;
2556 rx_ring->lbq_curr_idx = 0;
2557 rx_ring->lbq_clean_idx = 0;
2558 rx_ring->lbq_free_cnt = rx_ring->lbq_len;
2559 }
2560 if (rx_ring->sbq_len) {
2561 cqicb->flags |= FLAGS_LS; /* Load sbq values */
2562 *((u64 *) rx_ring->sbq_base_indirect) = rx_ring->sbq_base_dma;
2563 cqicb->sbq_addr =
2564 cpu_to_le64(rx_ring->sbq_base_indirect_dma);
2565 cqicb->sbq_buf_size =
2566 cpu_to_le16(((rx_ring->sbq_buf_size / 2) + 8) & 0xfffffff8);
2567 bq_len = (rx_ring->sbq_len == 65536) ? 0 :
2568 (u16) rx_ring->sbq_len;
2569 cqicb->sbq_len = cpu_to_le16(bq_len);
2570 rx_ring->sbq_prod_idx = 0;
2571 rx_ring->sbq_curr_idx = 0;
2572 rx_ring->sbq_clean_idx = 0;
2573 rx_ring->sbq_free_cnt = rx_ring->sbq_len;
2574 }
2575 switch (rx_ring->type) {
2576 case TX_Q:
2577 /* If there's only one interrupt, then we use
2578 * worker threads to process the outbound
2579 * completion handling rx_rings. We do this so
2580 * they can be run on multiple CPUs. There is
2581 * room to play with this more where we would only
2582 * run in a worker if there are more than x number
2583 * of outbound completions on the queue and more
2584 * than one queue active. Some threshold that
2585 * would indicate a benefit in spite of the cost
2586 * of a context switch.
2587 * If there's more than one interrupt, then the
2588 * outbound completions are processed in the ISR.
2589 */
2590 if (!test_bit(QL_MSIX_ENABLED, &qdev->flags))
2591 INIT_DELAYED_WORK(&rx_ring->rx_work, ql_tx_clean);
2592 else {
2593 /* With all debug warnings on we see a WARN_ON message
2594 * when we free the skb in the interrupt context.
2595 */
2596 INIT_DELAYED_WORK(&rx_ring->rx_work, ql_tx_clean);
2597 }
2598 cqicb->irq_delay = cpu_to_le16(qdev->tx_coalesce_usecs);
2599 cqicb->pkt_delay = cpu_to_le16(qdev->tx_max_coalesced_frames);
2600 break;
2601 case DEFAULT_Q:
2602 INIT_DELAYED_WORK(&rx_ring->rx_work, ql_rx_clean);
2603 cqicb->irq_delay = 0;
2604 cqicb->pkt_delay = 0;
2605 break;
2606 case RX_Q:
2607 /* Inbound completion handling rx_rings run in
2608 * separate NAPI contexts.
2609 */
2610 netif_napi_add(qdev->ndev, &rx_ring->napi, ql_napi_poll_msix,
2611 64);
2612 cqicb->irq_delay = cpu_to_le16(qdev->rx_coalesce_usecs);
2613 cqicb->pkt_delay = cpu_to_le16(qdev->rx_max_coalesced_frames);
2614 break;
2615 default:
2616 QPRINTK(qdev, IFUP, DEBUG, "Invalid rx_ring->type = %d.\n",
2617 rx_ring->type);
2618 }
2619 QPRINTK(qdev, IFUP, DEBUG, "Initializing rx work queue.\n");
2620 err = ql_write_cfg(qdev, cqicb, sizeof(struct cqicb),
2621 CFG_LCQ, rx_ring->cq_id);
2622 if (err) {
2623 QPRINTK(qdev, IFUP, ERR, "Failed to load CQICB.\n");
2624 return err;
2625 }
2626 return err;
2627 }
2628
2629 static int ql_start_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
2630 {
2631 struct wqicb *wqicb = (struct wqicb *)tx_ring;
2632 void __iomem *doorbell_area =
2633 qdev->doorbell_area + (DB_PAGE_SIZE * tx_ring->wq_id);
2634 void *shadow_reg = qdev->tx_ring_shadow_reg_area +
2635 (tx_ring->wq_id * sizeof(u64));
2636 u64 shadow_reg_dma = qdev->tx_ring_shadow_reg_dma +
2637 (tx_ring->wq_id * sizeof(u64));
2638 int err = 0;
2639
2640 /*
2641 * Assign doorbell registers for this tx_ring.
2642 */
2643 /* TX PCI doorbell mem area for tx producer index */
2644 tx_ring->prod_idx_db_reg = (u32 __iomem *) doorbell_area;
2645 tx_ring->prod_idx = 0;
2646 /* TX PCI doorbell mem area + 0x04 */
2647 tx_ring->valid_db_reg = doorbell_area + 0x04;
2648
2649 /*
2650 * Assign shadow registers for this tx_ring.
2651 */
2652 tx_ring->cnsmr_idx_sh_reg = shadow_reg;
2653 tx_ring->cnsmr_idx_sh_reg_dma = shadow_reg_dma;
2654
2655 wqicb->len = cpu_to_le16(tx_ring->wq_len | Q_LEN_V | Q_LEN_CPP_CONT);
2656 wqicb->flags = cpu_to_le16(Q_FLAGS_LC |
2657 Q_FLAGS_LB | Q_FLAGS_LI | Q_FLAGS_LO);
2658 wqicb->cq_id_rss = cpu_to_le16(tx_ring->cq_id);
2659 wqicb->rid = 0;
2660 wqicb->addr = cpu_to_le64(tx_ring->wq_base_dma);
2661
2662 wqicb->cnsmr_idx_addr = cpu_to_le64(tx_ring->cnsmr_idx_sh_reg_dma);
2663
2664 ql_init_tx_ring(qdev, tx_ring);
2665
2666 err = ql_write_cfg(qdev, wqicb, sizeof(wqicb), CFG_LRQ,
2667 (u16) tx_ring->wq_id);
2668 if (err) {
2669 QPRINTK(qdev, IFUP, ERR, "Failed to load tx_ring.\n");
2670 return err;
2671 }
2672 QPRINTK(qdev, IFUP, DEBUG, "Successfully loaded WQICB.\n");
2673 return err;
2674 }
2675
2676 static void ql_disable_msix(struct ql_adapter *qdev)
2677 {
2678 if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
2679 pci_disable_msix(qdev->pdev);
2680 clear_bit(QL_MSIX_ENABLED, &qdev->flags);
2681 kfree(qdev->msi_x_entry);
2682 qdev->msi_x_entry = NULL;
2683 } else if (test_bit(QL_MSI_ENABLED, &qdev->flags)) {
2684 pci_disable_msi(qdev->pdev);
2685 clear_bit(QL_MSI_ENABLED, &qdev->flags);
2686 }
2687 }
2688
2689 static void ql_enable_msix(struct ql_adapter *qdev)
2690 {
2691 int i;
2692
2693 qdev->intr_count = 1;
2694 /* Get the MSIX vectors. */
2695 if (irq_type == MSIX_IRQ) {
2696 /* Try to alloc space for the msix struct,
2697 * if it fails then go to MSI/legacy.
2698 */
2699 qdev->msi_x_entry = kcalloc(qdev->rx_ring_count,
2700 sizeof(struct msix_entry),
2701 GFP_KERNEL);
2702 if (!qdev->msi_x_entry) {
2703 irq_type = MSI_IRQ;
2704 goto msi;
2705 }
2706
2707 for (i = 0; i < qdev->rx_ring_count; i++)
2708 qdev->msi_x_entry[i].entry = i;
2709
2710 if (!pci_enable_msix
2711 (qdev->pdev, qdev->msi_x_entry, qdev->rx_ring_count)) {
2712 set_bit(QL_MSIX_ENABLED, &qdev->flags);
2713 qdev->intr_count = qdev->rx_ring_count;
2714 QPRINTK(qdev, IFUP, DEBUG,
2715 "MSI-X Enabled, got %d vectors.\n",
2716 qdev->intr_count);
2717 return;
2718 } else {
2719 kfree(qdev->msi_x_entry);
2720 qdev->msi_x_entry = NULL;
2721 QPRINTK(qdev, IFUP, WARNING,
2722 "MSI-X Enable failed, trying MSI.\n");
2723 irq_type = MSI_IRQ;
2724 }
2725 }
2726 msi:
2727 if (irq_type == MSI_IRQ) {
2728 if (!pci_enable_msi(qdev->pdev)) {
2729 set_bit(QL_MSI_ENABLED, &qdev->flags);
2730 QPRINTK(qdev, IFUP, INFO,
2731 "Running with MSI interrupts.\n");
2732 return;
2733 }
2734 }
2735 irq_type = LEG_IRQ;
2736 QPRINTK(qdev, IFUP, DEBUG, "Running with legacy interrupts.\n");
2737 }
2738
2739 /*
2740 * Here we build the intr_context structures based on
2741 * our rx_ring count and intr vector count.
2742 * The intr_context structure is used to hook each vector
2743 * to possibly different handlers.
2744 */
2745 static void ql_resolve_queues_to_irqs(struct ql_adapter *qdev)
2746 {
2747 int i = 0;
2748 struct intr_context *intr_context = &qdev->intr_context[0];
2749
2750 ql_enable_msix(qdev);
2751
2752 if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags))) {
2753 /* Each rx_ring has it's
2754 * own intr_context since we have separate
2755 * vectors for each queue.
2756 * This only true when MSI-X is enabled.
2757 */
2758 for (i = 0; i < qdev->intr_count; i++, intr_context++) {
2759 qdev->rx_ring[i].irq = i;
2760 intr_context->intr = i;
2761 intr_context->qdev = qdev;
2762 /*
2763 * We set up each vectors enable/disable/read bits so
2764 * there's no bit/mask calculations in the critical path.
2765 */
2766 intr_context->intr_en_mask =
2767 INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2768 INTR_EN_TYPE_ENABLE | INTR_EN_IHD_MASK | INTR_EN_IHD
2769 | i;
2770 intr_context->intr_dis_mask =
2771 INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2772 INTR_EN_TYPE_DISABLE | INTR_EN_IHD_MASK |
2773 INTR_EN_IHD | i;
2774 intr_context->intr_read_mask =
2775 INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2776 INTR_EN_TYPE_READ | INTR_EN_IHD_MASK | INTR_EN_IHD |
2777 i;
2778
2779 if (i == 0) {
2780 /*
2781 * Default queue handles bcast/mcast plus
2782 * async events. Needs buffers.
2783 */
2784 intr_context->handler = qlge_isr;
2785 sprintf(intr_context->name, "%s-default-queue",
2786 qdev->ndev->name);
2787 } else if (i < qdev->rss_ring_first_cq_id) {
2788 /*
2789 * Outbound queue is for outbound completions only.
2790 */
2791 intr_context->handler = qlge_msix_tx_isr;
2792 sprintf(intr_context->name, "%s-tx-%d",
2793 qdev->ndev->name, i);
2794 } else {
2795 /*
2796 * Inbound queues handle unicast frames only.
2797 */
2798 intr_context->handler = qlge_msix_rx_isr;
2799 sprintf(intr_context->name, "%s-rx-%d",
2800 qdev->ndev->name, i);
2801 }
2802 }
2803 } else {
2804 /*
2805 * All rx_rings use the same intr_context since
2806 * there is only one vector.
2807 */
2808 intr_context->intr = 0;
2809 intr_context->qdev = qdev;
2810 /*
2811 * We set up each vectors enable/disable/read bits so
2812 * there's no bit/mask calculations in the critical path.
2813 */
2814 intr_context->intr_en_mask =
2815 INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK | INTR_EN_TYPE_ENABLE;
2816 intr_context->intr_dis_mask =
2817 INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2818 INTR_EN_TYPE_DISABLE;
2819 intr_context->intr_read_mask =
2820 INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK | INTR_EN_TYPE_READ;
2821 /*
2822 * Single interrupt means one handler for all rings.
2823 */
2824 intr_context->handler = qlge_isr;
2825 sprintf(intr_context->name, "%s-single_irq", qdev->ndev->name);
2826 for (i = 0; i < qdev->rx_ring_count; i++)
2827 qdev->rx_ring[i].irq = 0;
2828 }
2829 }
2830
2831 static void ql_free_irq(struct ql_adapter *qdev)
2832 {
2833 int i;
2834 struct intr_context *intr_context = &qdev->intr_context[0];
2835
2836 for (i = 0; i < qdev->intr_count; i++, intr_context++) {
2837 if (intr_context->hooked) {
2838 if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
2839 free_irq(qdev->msi_x_entry[i].vector,
2840 &qdev->rx_ring[i]);
2841 QPRINTK(qdev, IFDOWN, DEBUG,
2842 "freeing msix interrupt %d.\n", i);
2843 } else {
2844 free_irq(qdev->pdev->irq, &qdev->rx_ring[0]);
2845 QPRINTK(qdev, IFDOWN, DEBUG,
2846 "freeing msi interrupt %d.\n", i);
2847 }
2848 }
2849 }
2850 ql_disable_msix(qdev);
2851 }
2852
2853 static int ql_request_irq(struct ql_adapter *qdev)
2854 {
2855 int i;
2856 int status = 0;
2857 struct pci_dev *pdev = qdev->pdev;
2858 struct intr_context *intr_context = &qdev->intr_context[0];
2859
2860 ql_resolve_queues_to_irqs(qdev);
2861
2862 for (i = 0; i < qdev->intr_count; i++, intr_context++) {
2863 atomic_set(&intr_context->irq_cnt, 0);
2864 if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
2865 status = request_irq(qdev->msi_x_entry[i].vector,
2866 intr_context->handler,
2867 0,
2868 intr_context->name,
2869 &qdev->rx_ring[i]);
2870 if (status) {
2871 QPRINTK(qdev, IFUP, ERR,
2872 "Failed request for MSIX interrupt %d.\n",
2873 i);
2874 goto err_irq;
2875 } else {
2876 QPRINTK(qdev, IFUP, DEBUG,
2877 "Hooked intr %d, queue type %s%s%s, with name %s.\n",
2878 i,
2879 qdev->rx_ring[i].type ==
2880 DEFAULT_Q ? "DEFAULT_Q" : "",
2881 qdev->rx_ring[i].type ==
2882 TX_Q ? "TX_Q" : "",
2883 qdev->rx_ring[i].type ==
2884 RX_Q ? "RX_Q" : "", intr_context->name);
2885 }
2886 } else {
2887 QPRINTK(qdev, IFUP, DEBUG,
2888 "trying msi or legacy interrupts.\n");
2889 QPRINTK(qdev, IFUP, DEBUG,
2890 "%s: irq = %d.\n", __func__, pdev->irq);
2891 QPRINTK(qdev, IFUP, DEBUG,
2892 "%s: context->name = %s.\n", __func__,
2893 intr_context->name);
2894 QPRINTK(qdev, IFUP, DEBUG,
2895 "%s: dev_id = 0x%p.\n", __func__,
2896 &qdev->rx_ring[0]);
2897 status =
2898 request_irq(pdev->irq, qlge_isr,
2899 test_bit(QL_MSI_ENABLED,
2900 &qdev->
2901 flags) ? 0 : IRQF_SHARED,
2902 intr_context->name, &qdev->rx_ring[0]);
2903 if (status)
2904 goto err_irq;
2905
2906 QPRINTK(qdev, IFUP, ERR,
2907 "Hooked intr %d, queue type %s%s%s, with name %s.\n",
2908 i,
2909 qdev->rx_ring[0].type ==
2910 DEFAULT_Q ? "DEFAULT_Q" : "",
2911 qdev->rx_ring[0].type == TX_Q ? "TX_Q" : "",
2912 qdev->rx_ring[0].type == RX_Q ? "RX_Q" : "",
2913 intr_context->name);
2914 }
2915 intr_context->hooked = 1;
2916 }
2917 return status;
2918 err_irq:
2919 QPRINTK(qdev, IFUP, ERR, "Failed to get the interrupts!!!/n");
2920 ql_free_irq(qdev);
2921 return status;
2922 }
2923
2924 static int ql_start_rss(struct ql_adapter *qdev)
2925 {
2926 struct ricb *ricb = &qdev->ricb;
2927 int status = 0;
2928 int i;
2929 u8 *hash_id = (u8 *) ricb->hash_cq_id;
2930
2931 memset((void *)ricb, 0, sizeof(ricb));
2932
2933 ricb->base_cq = qdev->rss_ring_first_cq_id | RSS_L4K;
2934 ricb->flags =
2935 (RSS_L6K | RSS_LI | RSS_LB | RSS_LM | RSS_RI4 | RSS_RI6 | RSS_RT4 |
2936 RSS_RT6);
2937 ricb->mask = cpu_to_le16(qdev->rss_ring_count - 1);
2938
2939 /*
2940 * Fill out the Indirection Table.
2941 */
2942 for (i = 0; i < 256; i++)
2943 hash_id[i] = i & (qdev->rss_ring_count - 1);
2944
2945 /*
2946 * Random values for the IPv6 and IPv4 Hash Keys.
2947 */
2948 get_random_bytes((void *)&ricb->ipv6_hash_key[0], 40);
2949 get_random_bytes((void *)&ricb->ipv4_hash_key[0], 16);
2950
2951 QPRINTK(qdev, IFUP, DEBUG, "Initializing RSS.\n");
2952
2953 status = ql_write_cfg(qdev, ricb, sizeof(ricb), CFG_LR, 0);
2954 if (status) {
2955 QPRINTK(qdev, IFUP, ERR, "Failed to load RICB.\n");
2956 return status;
2957 }
2958 QPRINTK(qdev, IFUP, DEBUG, "Successfully loaded RICB.\n");
2959 return status;
2960 }
2961
2962 /* Initialize the frame-to-queue routing. */
2963 static int ql_route_initialize(struct ql_adapter *qdev)
2964 {
2965 int status = 0;
2966 int i;
2967
2968 status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
2969 if (status)
2970 return status;
2971
2972 /* Clear all the entries in the routing table. */
2973 for (i = 0; i < 16; i++) {
2974 status = ql_set_routing_reg(qdev, i, 0, 0);
2975 if (status) {
2976 QPRINTK(qdev, IFUP, ERR,
2977 "Failed to init routing register for CAM packets.\n");
2978 goto exit;
2979 }
2980 }
2981
2982 status = ql_set_routing_reg(qdev, RT_IDX_ALL_ERR_SLOT, RT_IDX_ERR, 1);
2983 if (status) {
2984 QPRINTK(qdev, IFUP, ERR,
2985 "Failed to init routing register for error packets.\n");
2986 goto exit;
2987 }
2988 status = ql_set_routing_reg(qdev, RT_IDX_BCAST_SLOT, RT_IDX_BCAST, 1);
2989 if (status) {
2990 QPRINTK(qdev, IFUP, ERR,
2991 "Failed to init routing register for broadcast packets.\n");
2992 goto exit;
2993 }
2994 /* If we have more than one inbound queue, then turn on RSS in the
2995 * routing block.
2996 */
2997 if (qdev->rss_ring_count > 1) {
2998 status = ql_set_routing_reg(qdev, RT_IDX_RSS_MATCH_SLOT,
2999 RT_IDX_RSS_MATCH, 1);
3000 if (status) {
3001 QPRINTK(qdev, IFUP, ERR,
3002 "Failed to init routing register for MATCH RSS packets.\n");
3003 goto exit;
3004 }
3005 }
3006
3007 status = ql_set_routing_reg(qdev, RT_IDX_CAM_HIT_SLOT,
3008 RT_IDX_CAM_HIT, 1);
3009 if (status)
3010 QPRINTK(qdev, IFUP, ERR,
3011 "Failed to init routing register for CAM packets.\n");
3012 exit:
3013 ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
3014 return status;
3015 }
3016
3017 int ql_cam_route_initialize(struct ql_adapter *qdev)
3018 {
3019 int status;
3020
3021 status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
3022 if (status)
3023 return status;
3024 status = ql_set_mac_addr_reg(qdev, (u8 *) qdev->ndev->perm_addr,
3025 MAC_ADDR_TYPE_CAM_MAC, qdev->func * MAX_CQ);
3026 ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
3027 if (status) {
3028 QPRINTK(qdev, IFUP, ERR, "Failed to init mac address.\n");
3029 return status;
3030 }
3031
3032 status = ql_route_initialize(qdev);
3033 if (status)
3034 QPRINTK(qdev, IFUP, ERR, "Failed to init routing table.\n");
3035
3036 return status;
3037 }
3038
3039 static int ql_adapter_initialize(struct ql_adapter *qdev)
3040 {
3041 u32 value, mask;
3042 int i;
3043 int status = 0;
3044
3045 /*
3046 * Set up the System register to halt on errors.
3047 */
3048 value = SYS_EFE | SYS_FAE;
3049 mask = value << 16;
3050 ql_write32(qdev, SYS, mask | value);
3051
3052 /* Set the default queue. */
3053 value = NIC_RCV_CFG_DFQ;
3054 mask = NIC_RCV_CFG_DFQ_MASK;
3055 ql_write32(qdev, NIC_RCV_CFG, (mask | value));
3056
3057 /* Set the MPI interrupt to enabled. */
3058 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
3059
3060 /* Enable the function, set pagesize, enable error checking. */
3061 value = FSC_FE | FSC_EPC_INBOUND | FSC_EPC_OUTBOUND |
3062 FSC_EC | FSC_VM_PAGE_4K | FSC_SH;
3063
3064 /* Set/clear header splitting. */
3065 mask = FSC_VM_PAGESIZE_MASK |
3066 FSC_DBL_MASK | FSC_DBRST_MASK | (value << 16);
3067 ql_write32(qdev, FSC, mask | value);
3068
3069 ql_write32(qdev, SPLT_HDR, SPLT_HDR_EP |
3070 min(SMALL_BUFFER_SIZE, MAX_SPLIT_SIZE));
3071
3072 /* Start up the rx queues. */
3073 for (i = 0; i < qdev->rx_ring_count; i++) {
3074 status = ql_start_rx_ring(qdev, &qdev->rx_ring[i]);
3075 if (status) {
3076 QPRINTK(qdev, IFUP, ERR,
3077 "Failed to start rx ring[%d].\n", i);
3078 return status;
3079 }
3080 }
3081
3082 /* If there is more than one inbound completion queue
3083 * then download a RICB to configure RSS.
3084 */
3085 if (qdev->rss_ring_count > 1) {
3086 status = ql_start_rss(qdev);
3087 if (status) {
3088 QPRINTK(qdev, IFUP, ERR, "Failed to start RSS.\n");
3089 return status;
3090 }
3091 }
3092
3093 /* Start up the tx queues. */
3094 for (i = 0; i < qdev->tx_ring_count; i++) {
3095 status = ql_start_tx_ring(qdev, &qdev->tx_ring[i]);
3096 if (status) {
3097 QPRINTK(qdev, IFUP, ERR,
3098 "Failed to start tx ring[%d].\n", i);
3099 return status;
3100 }
3101 }
3102
3103 /* Initialize the port and set the max framesize. */
3104 status = qdev->nic_ops->port_initialize(qdev);
3105 if (status) {
3106 QPRINTK(qdev, IFUP, ERR, "Failed to start port.\n");
3107 return status;
3108 }
3109
3110 /* Set up the MAC address and frame routing filter. */
3111 status = ql_cam_route_initialize(qdev);
3112 if (status) {
3113 QPRINTK(qdev, IFUP, ERR,
3114 "Failed to init CAM/Routing tables.\n");
3115 return status;
3116 }
3117
3118 /* Start NAPI for the RSS queues. */
3119 for (i = qdev->rss_ring_first_cq_id; i < qdev->rx_ring_count; i++) {
3120 QPRINTK(qdev, IFUP, DEBUG, "Enabling NAPI for rx_ring[%d].\n",
3121 i);
3122 napi_enable(&qdev->rx_ring[i].napi);
3123 }
3124
3125 return status;
3126 }
3127
3128 /* Issue soft reset to chip. */
3129 static int ql_adapter_reset(struct ql_adapter *qdev)
3130 {
3131 u32 value;
3132 int status = 0;
3133 unsigned long end_jiffies = jiffies +
3134 max((unsigned long)1, usecs_to_jiffies(30));
3135
3136 ql_write32(qdev, RST_FO, (RST_FO_FR << 16) | RST_FO_FR);
3137
3138 do {
3139 value = ql_read32(qdev, RST_FO);
3140 if ((value & RST_FO_FR) == 0)
3141 break;
3142 cpu_relax();
3143 } while (time_before(jiffies, end_jiffies));
3144
3145 if (value & RST_FO_FR) {
3146 QPRINTK(qdev, IFDOWN, ERR,
3147 "ETIMEOUT!!! errored out of resetting the chip!\n");
3148 status = -ETIMEDOUT;
3149 }
3150
3151 return status;
3152 }
3153
3154 static void ql_display_dev_info(struct net_device *ndev)
3155 {
3156 struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3157
3158 QPRINTK(qdev, PROBE, INFO,
3159 "Function #%d, NIC Roll %d, NIC Rev = %d, "
3160 "XG Roll = %d, XG Rev = %d.\n",
3161 qdev->func,
3162 qdev->chip_rev_id & 0x0000000f,
3163 qdev->chip_rev_id >> 4 & 0x0000000f,
3164 qdev->chip_rev_id >> 8 & 0x0000000f,
3165 qdev->chip_rev_id >> 12 & 0x0000000f);
3166 QPRINTK(qdev, PROBE, INFO, "MAC address %pM\n", ndev->dev_addr);
3167 }
3168
3169 static int ql_adapter_down(struct ql_adapter *qdev)
3170 {
3171 struct net_device *ndev = qdev->ndev;
3172 int i, status = 0;
3173 struct rx_ring *rx_ring;
3174
3175 netif_stop_queue(ndev);
3176 netif_carrier_off(ndev);
3177
3178 /* Don't kill the reset worker thread if we
3179 * are in the process of recovery.
3180 */
3181 if (test_bit(QL_ADAPTER_UP, &qdev->flags))
3182 cancel_delayed_work_sync(&qdev->asic_reset_work);
3183 cancel_delayed_work_sync(&qdev->mpi_reset_work);
3184 cancel_delayed_work_sync(&qdev->mpi_work);
3185 cancel_delayed_work_sync(&qdev->mpi_idc_work);
3186 cancel_delayed_work_sync(&qdev->mpi_port_cfg_work);
3187
3188 /* The default queue at index 0 is always processed in
3189 * a workqueue.
3190 */
3191 cancel_delayed_work_sync(&qdev->rx_ring[0].rx_work);
3192
3193 /* The rest of the rx_rings are processed in
3194 * a workqueue only if it's a single interrupt
3195 * environment (MSI/Legacy).
3196 */
3197 for (i = 1; i < qdev->rx_ring_count; i++) {
3198 rx_ring = &qdev->rx_ring[i];
3199 /* Only the RSS rings use NAPI on multi irq
3200 * environment. Outbound completion processing
3201 * is done in interrupt context.
3202 */
3203 if (i >= qdev->rss_ring_first_cq_id) {
3204 napi_disable(&rx_ring->napi);
3205 } else {
3206 cancel_delayed_work_sync(&rx_ring->rx_work);
3207 }
3208 }
3209
3210 clear_bit(QL_ADAPTER_UP, &qdev->flags);
3211
3212 ql_disable_interrupts(qdev);
3213
3214 ql_tx_ring_clean(qdev);
3215
3216 ql_free_rx_buffers(qdev);
3217 spin_lock(&qdev->hw_lock);
3218 status = ql_adapter_reset(qdev);
3219 if (status)
3220 QPRINTK(qdev, IFDOWN, ERR, "reset(func #%d) FAILED!\n",
3221 qdev->func);
3222 spin_unlock(&qdev->hw_lock);
3223 return status;
3224 }
3225
3226 static int ql_adapter_up(struct ql_adapter *qdev)
3227 {
3228 int err = 0;
3229
3230 spin_lock(&qdev->hw_lock);
3231 err = ql_adapter_initialize(qdev);
3232 if (err) {
3233 QPRINTK(qdev, IFUP, INFO, "Unable to initialize adapter.\n");
3234 spin_unlock(&qdev->hw_lock);
3235 goto err_init;
3236 }
3237 spin_unlock(&qdev->hw_lock);
3238 set_bit(QL_ADAPTER_UP, &qdev->flags);
3239 ql_alloc_rx_buffers(qdev);
3240 ql_enable_interrupts(qdev);
3241 ql_enable_all_completion_interrupts(qdev);
3242 if ((ql_read32(qdev, STS) & qdev->port_init)) {
3243 netif_carrier_on(qdev->ndev);
3244 netif_start_queue(qdev->ndev);
3245 }
3246
3247 return 0;
3248 err_init:
3249 ql_adapter_reset(qdev);
3250 return err;
3251 }
3252
3253 static void ql_release_adapter_resources(struct ql_adapter *qdev)
3254 {
3255 ql_free_mem_resources(qdev);
3256 ql_free_irq(qdev);
3257 }
3258
3259 static int ql_get_adapter_resources(struct ql_adapter *qdev)
3260 {
3261 int status = 0;
3262
3263 if (ql_alloc_mem_resources(qdev)) {
3264 QPRINTK(qdev, IFUP, ERR, "Unable to allocate memory.\n");
3265 return -ENOMEM;
3266 }
3267 status = ql_request_irq(qdev);
3268 if (status)
3269 goto err_irq;
3270 return status;
3271 err_irq:
3272 ql_free_mem_resources(qdev);
3273 return status;
3274 }
3275
3276 static int qlge_close(struct net_device *ndev)
3277 {
3278 struct ql_adapter *qdev = netdev_priv(ndev);
3279
3280 /*
3281 * Wait for device to recover from a reset.
3282 * (Rarely happens, but possible.)
3283 */
3284 while (!test_bit(QL_ADAPTER_UP, &qdev->flags))
3285 msleep(1);
3286 ql_adapter_down(qdev);
3287 ql_release_adapter_resources(qdev);
3288 return 0;
3289 }
3290
3291 static int ql_configure_rings(struct ql_adapter *qdev)
3292 {
3293 int i;
3294 struct rx_ring *rx_ring;
3295 struct tx_ring *tx_ring;
3296 int cpu_cnt = num_online_cpus();
3297
3298 /*
3299 * For each processor present we allocate one
3300 * rx_ring for outbound completions, and one
3301 * rx_ring for inbound completions. Plus there is
3302 * always the one default queue. For the CPU
3303 * counts we end up with the following rx_rings:
3304 * rx_ring count =
3305 * one default queue +
3306 * (CPU count * outbound completion rx_ring) +
3307 * (CPU count * inbound (RSS) completion rx_ring)
3308 * To keep it simple we limit the total number of
3309 * queues to < 32, so we truncate CPU to 8.
3310 * This limitation can be removed when requested.
3311 */
3312
3313 if (cpu_cnt > MAX_CPUS)
3314 cpu_cnt = MAX_CPUS;
3315
3316 /*
3317 * rx_ring[0] is always the default queue.
3318 */
3319 /* Allocate outbound completion ring for each CPU. */
3320 qdev->tx_ring_count = cpu_cnt;
3321 /* Allocate inbound completion (RSS) ring for each CPU. */
3322 qdev->rss_ring_count = cpu_cnt;
3323 /* cq_id for the first inbound ring handler. */
3324 qdev->rss_ring_first_cq_id = cpu_cnt + 1;
3325 /*
3326 * qdev->rx_ring_count:
3327 * Total number of rx_rings. This includes the one
3328 * default queue, a number of outbound completion
3329 * handler rx_rings, and the number of inbound
3330 * completion handler rx_rings.
3331 */
3332 qdev->rx_ring_count = qdev->tx_ring_count + qdev->rss_ring_count + 1;
3333
3334 for (i = 0; i < qdev->tx_ring_count; i++) {
3335 tx_ring = &qdev->tx_ring[i];
3336 memset((void *)tx_ring, 0, sizeof(tx_ring));
3337 tx_ring->qdev = qdev;
3338 tx_ring->wq_id = i;
3339 tx_ring->wq_len = qdev->tx_ring_size;
3340 tx_ring->wq_size =
3341 tx_ring->wq_len * sizeof(struct ob_mac_iocb_req);
3342
3343 /*
3344 * The completion queue ID for the tx rings start
3345 * immediately after the default Q ID, which is zero.
3346 */
3347 tx_ring->cq_id = i + 1;
3348 }
3349
3350 for (i = 0; i < qdev->rx_ring_count; i++) {
3351 rx_ring = &qdev->rx_ring[i];
3352 memset((void *)rx_ring, 0, sizeof(rx_ring));
3353 rx_ring->qdev = qdev;
3354 rx_ring->cq_id = i;
3355 rx_ring->cpu = i % cpu_cnt; /* CPU to run handler on. */
3356 if (i == 0) { /* Default queue at index 0. */
3357 /*
3358 * Default queue handles bcast/mcast plus
3359 * async events. Needs buffers.
3360 */
3361 rx_ring->cq_len = qdev->rx_ring_size;
3362 rx_ring->cq_size =
3363 rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
3364 rx_ring->lbq_len = NUM_LARGE_BUFFERS;
3365 rx_ring->lbq_size =
3366 rx_ring->lbq_len * sizeof(__le64);
3367 rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE;
3368 rx_ring->sbq_len = NUM_SMALL_BUFFERS;
3369 rx_ring->sbq_size =
3370 rx_ring->sbq_len * sizeof(__le64);
3371 rx_ring->sbq_buf_size = SMALL_BUFFER_SIZE * 2;
3372 rx_ring->type = DEFAULT_Q;
3373 } else if (i < qdev->rss_ring_first_cq_id) {
3374 /*
3375 * Outbound queue handles outbound completions only.
3376 */
3377 /* outbound cq is same size as tx_ring it services. */
3378 rx_ring->cq_len = qdev->tx_ring_size;
3379 rx_ring->cq_size =
3380 rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
3381 rx_ring->lbq_len = 0;
3382 rx_ring->lbq_size = 0;
3383 rx_ring->lbq_buf_size = 0;
3384 rx_ring->sbq_len = 0;
3385 rx_ring->sbq_size = 0;
3386 rx_ring->sbq_buf_size = 0;
3387 rx_ring->type = TX_Q;
3388 } else { /* Inbound completions (RSS) queues */
3389 /*
3390 * Inbound queues handle unicast frames only.
3391 */
3392 rx_ring->cq_len = qdev->rx_ring_size;
3393 rx_ring->cq_size =
3394 rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
3395 rx_ring->lbq_len = NUM_LARGE_BUFFERS;
3396 rx_ring->lbq_size =
3397 rx_ring->lbq_len * sizeof(__le64);
3398 rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE;
3399 rx_ring->sbq_len = NUM_SMALL_BUFFERS;
3400 rx_ring->sbq_size =
3401 rx_ring->sbq_len * sizeof(__le64);
3402 rx_ring->sbq_buf_size = SMALL_BUFFER_SIZE * 2;
3403 rx_ring->type = RX_Q;
3404 }
3405 }
3406 return 0;
3407 }
3408
3409 static int qlge_open(struct net_device *ndev)
3410 {
3411 int err = 0;
3412 struct ql_adapter *qdev = netdev_priv(ndev);
3413
3414 err = ql_configure_rings(qdev);
3415 if (err)
3416 return err;
3417
3418 err = ql_get_adapter_resources(qdev);
3419 if (err)
3420 goto error_up;
3421
3422 err = ql_adapter_up(qdev);
3423 if (err)
3424 goto error_up;
3425
3426 return err;
3427
3428 error_up:
3429 ql_release_adapter_resources(qdev);
3430 return err;
3431 }
3432
3433 static int qlge_change_mtu(struct net_device *ndev, int new_mtu)
3434 {
3435 struct ql_adapter *qdev = netdev_priv(ndev);
3436
3437 if (ndev->mtu == 1500 && new_mtu == 9000) {
3438 QPRINTK(qdev, IFUP, ERR, "Changing to jumbo MTU.\n");
3439 queue_delayed_work(qdev->workqueue,
3440 &qdev->mpi_port_cfg_work, 0);
3441 } else if (ndev->mtu == 9000 && new_mtu == 1500) {
3442 QPRINTK(qdev, IFUP, ERR, "Changing to normal MTU.\n");
3443 } else if ((ndev->mtu == 1500 && new_mtu == 1500) ||
3444 (ndev->mtu == 9000 && new_mtu == 9000)) {
3445 return 0;
3446 } else
3447 return -EINVAL;
3448 ndev->mtu = new_mtu;
3449 return 0;
3450 }
3451
3452 static struct net_device_stats *qlge_get_stats(struct net_device
3453 *ndev)
3454 {
3455 struct ql_adapter *qdev = netdev_priv(ndev);
3456 return &qdev->stats;
3457 }
3458
3459 static void qlge_set_multicast_list(struct net_device *ndev)
3460 {
3461 struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3462 struct dev_mc_list *mc_ptr;
3463 int i, status;
3464
3465 status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
3466 if (status)
3467 return;
3468 spin_lock(&qdev->hw_lock);
3469 /*
3470 * Set or clear promiscuous mode if a
3471 * transition is taking place.
3472 */
3473 if (ndev->flags & IFF_PROMISC) {
3474 if (!test_bit(QL_PROMISCUOUS, &qdev->flags)) {
3475 if (ql_set_routing_reg
3476 (qdev, RT_IDX_PROMISCUOUS_SLOT, RT_IDX_VALID, 1)) {
3477 QPRINTK(qdev, HW, ERR,
3478 "Failed to set promiscous mode.\n");
3479 } else {
3480 set_bit(QL_PROMISCUOUS, &qdev->flags);
3481 }
3482 }
3483 } else {
3484 if (test_bit(QL_PROMISCUOUS, &qdev->flags)) {
3485 if (ql_set_routing_reg
3486 (qdev, RT_IDX_PROMISCUOUS_SLOT, RT_IDX_VALID, 0)) {
3487 QPRINTK(qdev, HW, ERR,
3488 "Failed to clear promiscous mode.\n");
3489 } else {
3490 clear_bit(QL_PROMISCUOUS, &qdev->flags);
3491 }
3492 }
3493 }
3494
3495 /*
3496 * Set or clear all multicast mode if a
3497 * transition is taking place.
3498 */
3499 if ((ndev->flags & IFF_ALLMULTI) ||
3500 (ndev->mc_count > MAX_MULTICAST_ENTRIES)) {
3501 if (!test_bit(QL_ALLMULTI, &qdev->flags)) {
3502 if (ql_set_routing_reg
3503 (qdev, RT_IDX_ALLMULTI_SLOT, RT_IDX_MCAST, 1)) {
3504 QPRINTK(qdev, HW, ERR,
3505 "Failed to set all-multi mode.\n");
3506 } else {
3507 set_bit(QL_ALLMULTI, &qdev->flags);
3508 }
3509 }
3510 } else {
3511 if (test_bit(QL_ALLMULTI, &qdev->flags)) {
3512 if (ql_set_routing_reg
3513 (qdev, RT_IDX_ALLMULTI_SLOT, RT_IDX_MCAST, 0)) {
3514 QPRINTK(qdev, HW, ERR,
3515 "Failed to clear all-multi mode.\n");
3516 } else {
3517 clear_bit(QL_ALLMULTI, &qdev->flags);
3518 }
3519 }
3520 }
3521
3522 if (ndev->mc_count) {
3523 status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
3524 if (status)
3525 goto exit;
3526 for (i = 0, mc_ptr = ndev->mc_list; mc_ptr;
3527 i++, mc_ptr = mc_ptr->next)
3528 if (ql_set_mac_addr_reg(qdev, (u8 *) mc_ptr->dmi_addr,
3529 MAC_ADDR_TYPE_MULTI_MAC, i)) {
3530 QPRINTK(qdev, HW, ERR,
3531 "Failed to loadmulticast address.\n");
3532 ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
3533 goto exit;
3534 }
3535 ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
3536 if (ql_set_routing_reg
3537 (qdev, RT_IDX_MCAST_MATCH_SLOT, RT_IDX_MCAST_MATCH, 1)) {
3538 QPRINTK(qdev, HW, ERR,
3539 "Failed to set multicast match mode.\n");
3540 } else {
3541 set_bit(QL_ALLMULTI, &qdev->flags);
3542 }
3543 }
3544 exit:
3545 spin_unlock(&qdev->hw_lock);
3546 ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
3547 }
3548
3549 static int qlge_set_mac_address(struct net_device *ndev, void *p)
3550 {
3551 struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3552 struct sockaddr *addr = p;
3553 int status;
3554
3555 if (netif_running(ndev))
3556 return -EBUSY;
3557
3558 if (!is_valid_ether_addr(addr->sa_data))
3559 return -EADDRNOTAVAIL;
3560 memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
3561
3562 status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
3563 if (status)
3564 return status;
3565 spin_lock(&qdev->hw_lock);
3566 status = ql_set_mac_addr_reg(qdev, (u8 *) ndev->dev_addr,
3567 MAC_ADDR_TYPE_CAM_MAC, qdev->func * MAX_CQ);
3568 spin_unlock(&qdev->hw_lock);
3569 if (status)
3570 QPRINTK(qdev, HW, ERR, "Failed to load MAC address.\n");
3571 ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
3572 return status;
3573 }
3574
3575 static void qlge_tx_timeout(struct net_device *ndev)
3576 {
3577 struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3578 ql_queue_asic_error(qdev);
3579 }
3580
3581 static void ql_asic_reset_work(struct work_struct *work)
3582 {
3583 struct ql_adapter *qdev =
3584 container_of(work, struct ql_adapter, asic_reset_work.work);
3585 int status;
3586
3587 status = ql_adapter_down(qdev);
3588 if (status)
3589 goto error;
3590
3591 status = ql_adapter_up(qdev);
3592 if (status)
3593 goto error;
3594
3595 return;
3596 error:
3597 QPRINTK(qdev, IFUP, ALERT,
3598 "Driver up/down cycle failed, closing device\n");
3599 rtnl_lock();
3600 set_bit(QL_ADAPTER_UP, &qdev->flags);
3601 dev_close(qdev->ndev);
3602 rtnl_unlock();
3603 }
3604
3605 static struct nic_operations qla8012_nic_ops = {
3606 .get_flash = ql_get_8012_flash_params,
3607 .port_initialize = ql_8012_port_initialize,
3608 };
3609
3610 static struct nic_operations qla8000_nic_ops = {
3611 .get_flash = ql_get_8000_flash_params,
3612 .port_initialize = ql_8000_port_initialize,
3613 };
3614
3615
3616 static void ql_get_board_info(struct ql_adapter *qdev)
3617 {
3618 qdev->func =
3619 (ql_read32(qdev, STS) & STS_FUNC_ID_MASK) >> STS_FUNC_ID_SHIFT;
3620 if (qdev->func) {
3621 qdev->xg_sem_mask = SEM_XGMAC1_MASK;
3622 qdev->port_link_up = STS_PL1;
3623 qdev->port_init = STS_PI1;
3624 qdev->mailbox_in = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC2_MBI;
3625 qdev->mailbox_out = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC2_MBO;
3626 } else {
3627 qdev->xg_sem_mask = SEM_XGMAC0_MASK;
3628 qdev->port_link_up = STS_PL0;
3629 qdev->port_init = STS_PI0;
3630 qdev->mailbox_in = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC0_MBI;
3631 qdev->mailbox_out = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC0_MBO;
3632 }
3633 qdev->chip_rev_id = ql_read32(qdev, REV_ID);
3634 qdev->device_id = qdev->pdev->device;
3635 if (qdev->device_id == QLGE_DEVICE_ID_8012)
3636 qdev->nic_ops = &qla8012_nic_ops;
3637 else if (qdev->device_id == QLGE_DEVICE_ID_8000)
3638 qdev->nic_ops = &qla8000_nic_ops;
3639 }
3640
3641 static void ql_release_all(struct pci_dev *pdev)
3642 {
3643 struct net_device *ndev = pci_get_drvdata(pdev);
3644 struct ql_adapter *qdev = netdev_priv(ndev);
3645
3646 if (qdev->workqueue) {
3647 destroy_workqueue(qdev->workqueue);
3648 qdev->workqueue = NULL;
3649 }
3650 if (qdev->q_workqueue) {
3651 destroy_workqueue(qdev->q_workqueue);
3652 qdev->q_workqueue = NULL;
3653 }
3654 if (qdev->reg_base)
3655 iounmap(qdev->reg_base);
3656 if (qdev->doorbell_area)
3657 iounmap(qdev->doorbell_area);
3658 pci_release_regions(pdev);
3659 pci_set_drvdata(pdev, NULL);
3660 }
3661
3662 static int __devinit ql_init_device(struct pci_dev *pdev,
3663 struct net_device *ndev, int cards_found)
3664 {
3665 struct ql_adapter *qdev = netdev_priv(ndev);
3666 int pos, err = 0;
3667 u16 val16;
3668
3669 memset((void *)qdev, 0, sizeof(qdev));
3670 err = pci_enable_device(pdev);
3671 if (err) {
3672 dev_err(&pdev->dev, "PCI device enable failed.\n");
3673 return err;
3674 }
3675
3676 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3677 if (pos <= 0) {
3678 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
3679 "aborting.\n");
3680 goto err_out;
3681 } else {
3682 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
3683 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
3684 val16 |= (PCI_EXP_DEVCTL_CERE |
3685 PCI_EXP_DEVCTL_NFERE |
3686 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE);
3687 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
3688 }
3689
3690 err = pci_request_regions(pdev, DRV_NAME);
3691 if (err) {
3692 dev_err(&pdev->dev, "PCI region request failed.\n");
3693 goto err_out;
3694 }
3695
3696 pci_set_master(pdev);
3697 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
3698 set_bit(QL_DMA64, &qdev->flags);
3699 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3700 } else {
3701 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3702 if (!err)
3703 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
3704 }
3705
3706 if (err) {
3707 dev_err(&pdev->dev, "No usable DMA configuration.\n");
3708 goto err_out;
3709 }
3710
3711 pci_set_drvdata(pdev, ndev);
3712 qdev->reg_base =
3713 ioremap_nocache(pci_resource_start(pdev, 1),
3714 pci_resource_len(pdev, 1));
3715 if (!qdev->reg_base) {
3716 dev_err(&pdev->dev, "Register mapping failed.\n");
3717 err = -ENOMEM;
3718 goto err_out;
3719 }
3720
3721 qdev->doorbell_area_size = pci_resource_len(pdev, 3);
3722 qdev->doorbell_area =
3723 ioremap_nocache(pci_resource_start(pdev, 3),
3724 pci_resource_len(pdev, 3));
3725 if (!qdev->doorbell_area) {
3726 dev_err(&pdev->dev, "Doorbell register mapping failed.\n");
3727 err = -ENOMEM;
3728 goto err_out;
3729 }
3730
3731 qdev->ndev = ndev;
3732 qdev->pdev = pdev;
3733 ql_get_board_info(qdev);
3734 qdev->msg_enable = netif_msg_init(debug, default_msg);
3735 spin_lock_init(&qdev->hw_lock);
3736 spin_lock_init(&qdev->stats_lock);
3737
3738 /* make sure the EEPROM is good */
3739 err = qdev->nic_ops->get_flash(qdev);
3740 if (err) {
3741 dev_err(&pdev->dev, "Invalid FLASH.\n");
3742 goto err_out;
3743 }
3744
3745 memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
3746
3747 /* Set up the default ring sizes. */
3748 qdev->tx_ring_size = NUM_TX_RING_ENTRIES;
3749 qdev->rx_ring_size = NUM_RX_RING_ENTRIES;
3750
3751 /* Set up the coalescing parameters. */
3752 qdev->rx_coalesce_usecs = DFLT_COALESCE_WAIT;
3753 qdev->tx_coalesce_usecs = DFLT_COALESCE_WAIT;
3754 qdev->rx_max_coalesced_frames = DFLT_INTER_FRAME_WAIT;
3755 qdev->tx_max_coalesced_frames = DFLT_INTER_FRAME_WAIT;
3756
3757 /*
3758 * Set up the operating parameters.
3759 */
3760 qdev->rx_csum = 1;
3761
3762 qdev->q_workqueue = create_workqueue(ndev->name);
3763 qdev->workqueue = create_singlethread_workqueue(ndev->name);
3764 INIT_DELAYED_WORK(&qdev->asic_reset_work, ql_asic_reset_work);
3765 INIT_DELAYED_WORK(&qdev->mpi_reset_work, ql_mpi_reset_work);
3766 INIT_DELAYED_WORK(&qdev->mpi_work, ql_mpi_work);
3767 INIT_DELAYED_WORK(&qdev->mpi_port_cfg_work, ql_mpi_port_cfg_work);
3768 INIT_DELAYED_WORK(&qdev->mpi_idc_work, ql_mpi_idc_work);
3769 mutex_init(&qdev->mpi_mutex);
3770 init_completion(&qdev->ide_completion);
3771
3772 if (!cards_found) {
3773 dev_info(&pdev->dev, "%s\n", DRV_STRING);
3774 dev_info(&pdev->dev, "Driver name: %s, Version: %s.\n",
3775 DRV_NAME, DRV_VERSION);
3776 }
3777 return 0;
3778 err_out:
3779 ql_release_all(pdev);
3780 pci_disable_device(pdev);
3781 return err;
3782 }
3783
3784
3785 static const struct net_device_ops qlge_netdev_ops = {
3786 .ndo_open = qlge_open,
3787 .ndo_stop = qlge_close,
3788 .ndo_start_xmit = qlge_send,
3789 .ndo_change_mtu = qlge_change_mtu,
3790 .ndo_get_stats = qlge_get_stats,
3791 .ndo_set_multicast_list = qlge_set_multicast_list,
3792 .ndo_set_mac_address = qlge_set_mac_address,
3793 .ndo_validate_addr = eth_validate_addr,
3794 .ndo_tx_timeout = qlge_tx_timeout,
3795 .ndo_vlan_rx_register = ql_vlan_rx_register,
3796 .ndo_vlan_rx_add_vid = ql_vlan_rx_add_vid,
3797 .ndo_vlan_rx_kill_vid = ql_vlan_rx_kill_vid,
3798 };
3799
3800 static int __devinit qlge_probe(struct pci_dev *pdev,
3801 const struct pci_device_id *pci_entry)
3802 {
3803 struct net_device *ndev = NULL;
3804 struct ql_adapter *qdev = NULL;
3805 static int cards_found = 0;
3806 int err = 0;
3807
3808 ndev = alloc_etherdev(sizeof(struct ql_adapter));
3809 if (!ndev)
3810 return -ENOMEM;
3811
3812 err = ql_init_device(pdev, ndev, cards_found);
3813 if (err < 0) {
3814 free_netdev(ndev);
3815 return err;
3816 }
3817
3818 qdev = netdev_priv(ndev);
3819 SET_NETDEV_DEV(ndev, &pdev->dev);
3820 ndev->features = (0
3821 | NETIF_F_IP_CSUM
3822 | NETIF_F_SG
3823 | NETIF_F_TSO
3824 | NETIF_F_TSO6
3825 | NETIF_F_TSO_ECN
3826 | NETIF_F_HW_VLAN_TX
3827 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER);
3828
3829 if (test_bit(QL_DMA64, &qdev->flags))
3830 ndev->features |= NETIF_F_HIGHDMA;
3831
3832 /*
3833 * Set up net_device structure.
3834 */
3835 ndev->tx_queue_len = qdev->tx_ring_size;
3836 ndev->irq = pdev->irq;
3837
3838 ndev->netdev_ops = &qlge_netdev_ops;
3839 SET_ETHTOOL_OPS(ndev, &qlge_ethtool_ops);
3840 ndev->watchdog_timeo = 10 * HZ;
3841
3842 err = register_netdev(ndev);
3843 if (err) {
3844 dev_err(&pdev->dev, "net device registration failed.\n");
3845 ql_release_all(pdev);
3846 pci_disable_device(pdev);
3847 return err;
3848 }
3849 netif_carrier_off(ndev);
3850 netif_stop_queue(ndev);
3851 ql_display_dev_info(ndev);
3852 cards_found++;
3853 return 0;
3854 }
3855
3856 static void __devexit qlge_remove(struct pci_dev *pdev)
3857 {
3858 struct net_device *ndev = pci_get_drvdata(pdev);
3859 unregister_netdev(ndev);
3860 ql_release_all(pdev);
3861 pci_disable_device(pdev);
3862 free_netdev(ndev);
3863 }
3864
3865 /*
3866 * This callback is called by the PCI subsystem whenever
3867 * a PCI bus error is detected.
3868 */
3869 static pci_ers_result_t qlge_io_error_detected(struct pci_dev *pdev,
3870 enum pci_channel_state state)
3871 {
3872 struct net_device *ndev = pci_get_drvdata(pdev);
3873 struct ql_adapter *qdev = netdev_priv(ndev);
3874
3875 if (netif_running(ndev))
3876 ql_adapter_down(qdev);
3877
3878 pci_disable_device(pdev);
3879
3880 /* Request a slot reset. */
3881 return PCI_ERS_RESULT_NEED_RESET;
3882 }
3883
3884 /*
3885 * This callback is called after the PCI buss has been reset.
3886 * Basically, this tries to restart the card from scratch.
3887 * This is a shortened version of the device probe/discovery code,
3888 * it resembles the first-half of the () routine.
3889 */
3890 static pci_ers_result_t qlge_io_slot_reset(struct pci_dev *pdev)
3891 {
3892 struct net_device *ndev = pci_get_drvdata(pdev);
3893 struct ql_adapter *qdev = netdev_priv(ndev);
3894
3895 if (pci_enable_device(pdev)) {
3896 QPRINTK(qdev, IFUP, ERR,
3897 "Cannot re-enable PCI device after reset.\n");
3898 return PCI_ERS_RESULT_DISCONNECT;
3899 }
3900
3901 pci_set_master(pdev);
3902
3903 netif_carrier_off(ndev);
3904 netif_stop_queue(ndev);
3905 ql_adapter_reset(qdev);
3906
3907 /* Make sure the EEPROM is good */
3908 memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
3909
3910 if (!is_valid_ether_addr(ndev->perm_addr)) {
3911 QPRINTK(qdev, IFUP, ERR, "After reset, invalid MAC address.\n");
3912 return PCI_ERS_RESULT_DISCONNECT;
3913 }
3914
3915 return PCI_ERS_RESULT_RECOVERED;
3916 }
3917
3918 static void qlge_io_resume(struct pci_dev *pdev)
3919 {
3920 struct net_device *ndev = pci_get_drvdata(pdev);
3921 struct ql_adapter *qdev = netdev_priv(ndev);
3922
3923 pci_set_master(pdev);
3924
3925 if (netif_running(ndev)) {
3926 if (ql_adapter_up(qdev)) {
3927 QPRINTK(qdev, IFUP, ERR,
3928 "Device initialization failed after reset.\n");
3929 return;
3930 }
3931 }
3932
3933 netif_device_attach(ndev);
3934 }
3935
3936 static struct pci_error_handlers qlge_err_handler = {
3937 .error_detected = qlge_io_error_detected,
3938 .slot_reset = qlge_io_slot_reset,
3939 .resume = qlge_io_resume,
3940 };
3941
3942 static int qlge_suspend(struct pci_dev *pdev, pm_message_t state)
3943 {
3944 struct net_device *ndev = pci_get_drvdata(pdev);
3945 struct ql_adapter *qdev = netdev_priv(ndev);
3946 int err, i;
3947
3948 netif_device_detach(ndev);
3949
3950 if (netif_running(ndev)) {
3951 err = ql_adapter_down(qdev);
3952 if (!err)
3953 return err;
3954 }
3955
3956 for (i = qdev->rss_ring_first_cq_id; i < qdev->rx_ring_count; i++)
3957 netif_napi_del(&qdev->rx_ring[i].napi);
3958
3959 err = pci_save_state(pdev);
3960 if (err)
3961 return err;
3962
3963 pci_disable_device(pdev);
3964
3965 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3966
3967 return 0;
3968 }
3969
3970 #ifdef CONFIG_PM
3971 static int qlge_resume(struct pci_dev *pdev)
3972 {
3973 struct net_device *ndev = pci_get_drvdata(pdev);
3974 struct ql_adapter *qdev = netdev_priv(ndev);
3975 int err;
3976
3977 pci_set_power_state(pdev, PCI_D0);
3978 pci_restore_state(pdev);
3979 err = pci_enable_device(pdev);
3980 if (err) {
3981 QPRINTK(qdev, IFUP, ERR, "Cannot enable PCI device from suspend\n");
3982 return err;
3983 }
3984 pci_set_master(pdev);
3985
3986 pci_enable_wake(pdev, PCI_D3hot, 0);
3987 pci_enable_wake(pdev, PCI_D3cold, 0);
3988
3989 if (netif_running(ndev)) {
3990 err = ql_adapter_up(qdev);
3991 if (err)
3992 return err;
3993 }
3994
3995 netif_device_attach(ndev);
3996
3997 return 0;
3998 }
3999 #endif /* CONFIG_PM */
4000
4001 static void qlge_shutdown(struct pci_dev *pdev)
4002 {
4003 qlge_suspend(pdev, PMSG_SUSPEND);
4004 }
4005
4006 static struct pci_driver qlge_driver = {
4007 .name = DRV_NAME,
4008 .id_table = qlge_pci_tbl,
4009 .probe = qlge_probe,
4010 .remove = __devexit_p(qlge_remove),
4011 #ifdef CONFIG_PM
4012 .suspend = qlge_suspend,
4013 .resume = qlge_resume,
4014 #endif
4015 .shutdown = qlge_shutdown,
4016 .err_handler = &qlge_err_handler
4017 };
4018
4019 static int __init qlge_init_module(void)
4020 {
4021 return pci_register_driver(&qlge_driver);
4022 }
4023
4024 static void __exit qlge_exit(void)
4025 {
4026 pci_unregister_driver(&qlge_driver);
4027 }
4028
4029 module_init(qlge_init_module);
4030 module_exit(qlge_exit);
Linux kernel - Deliverables
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