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Merge 3.1-rc1 into usb-linus
[zen-stable.git] / drivers / infiniband / hw / nes / nes_hw.c
blobbe36cbeae63078cabcd642816a79e56c5ca6c9ad
1 /*
2 * Copyright (c) 2006 - 2009 Intel Corporation. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 */
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/ip.h>
39 #include <linux/tcp.h>
40 #include <linux/if_vlan.h>
41 #include <linux/inet_lro.h>
42 #include <linux/slab.h>
43
44 #include "nes.h"
45
46 static unsigned int nes_lro_max_aggr = NES_LRO_MAX_AGGR;
47 module_param(nes_lro_max_aggr, uint, 0444);
48 MODULE_PARM_DESC(nes_lro_max_aggr, "NIC LRO max packet aggregation");
49
50 static int wide_ppm_offset;
51 module_param(wide_ppm_offset, int, 0644);
52 MODULE_PARM_DESC(wide_ppm_offset, "Increase CX4 interface clock ppm offset, 0=100ppm (default), 1=300ppm");
53
54 static u32 crit_err_count;
55 u32 int_mod_timer_init;
56 u32 int_mod_cq_depth_256;
57 u32 int_mod_cq_depth_128;
58 u32 int_mod_cq_depth_32;
59 u32 int_mod_cq_depth_24;
60 u32 int_mod_cq_depth_16;
61 u32 int_mod_cq_depth_4;
62 u32 int_mod_cq_depth_1;
63 static const u8 nes_max_critical_error_count = 100;
64 #include "nes_cm.h"
65
66 static void nes_cqp_ce_handler(struct nes_device *nesdev, struct nes_hw_cq *cq);
67 static void nes_init_csr_ne020(struct nes_device *nesdev, u8 hw_rev, u8 port_count);
68 static int nes_init_serdes(struct nes_device *nesdev, u8 hw_rev, u8 port_count,
69 struct nes_adapter *nesadapter, u8 OneG_Mode);
70 static void nes_nic_napi_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *cq);
71 static void nes_process_aeq(struct nes_device *nesdev, struct nes_hw_aeq *aeq);
72 static void nes_process_ceq(struct nes_device *nesdev, struct nes_hw_ceq *ceq);
73 static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
74 struct nes_hw_aeqe *aeqe);
75 static void process_critical_error(struct nes_device *nesdev);
76 static void nes_process_mac_intr(struct nes_device *nesdev, u32 mac_number);
77 static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_Mode);
78 static void nes_terminate_timeout(unsigned long context);
79 static void nes_terminate_start_timer(struct nes_qp *nesqp);
80
81 #ifdef CONFIG_INFINIBAND_NES_DEBUG
82 static unsigned char *nes_iwarp_state_str[] = {
83 "Non-Existent",
84 "Idle",
85 "RTS",
86 "Closing",
87 "RSVD1",
88 "Terminate",
89 "Error",
90 "RSVD2",
91 };
92
93 static unsigned char *nes_tcp_state_str[] = {
94 "Non-Existent",
95 "Closed",
96 "Listen",
97 "SYN Sent",
98 "SYN Rcvd",
99 "Established",
100 "Close Wait",
101 "FIN Wait 1",
102 "Closing",
103 "Last Ack",
104 "FIN Wait 2",
105 "Time Wait",
106 "RSVD1",
107 "RSVD2",
108 "RSVD3",
109 "RSVD4",
110 };
111 #endif
112
113
114 /**
115 * nes_nic_init_timer_defaults
116 */
117 void nes_nic_init_timer_defaults(struct nes_device *nesdev, u8 jumbomode)
118 {
119 unsigned long flags;
120 struct nes_adapter *nesadapter = nesdev->nesadapter;
121 struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
122
123 spin_lock_irqsave(&nesadapter->periodic_timer_lock, flags);
124
125 shared_timer->timer_in_use_min = NES_NIC_FAST_TIMER_LOW;
126 shared_timer->timer_in_use_max = NES_NIC_FAST_TIMER_HIGH;
127 if (jumbomode) {
128 shared_timer->threshold_low = DEFAULT_JUMBO_NES_QL_LOW;
129 shared_timer->threshold_target = DEFAULT_JUMBO_NES_QL_TARGET;
130 shared_timer->threshold_high = DEFAULT_JUMBO_NES_QL_HIGH;
131 } else {
132 shared_timer->threshold_low = DEFAULT_NES_QL_LOW;
133 shared_timer->threshold_target = DEFAULT_NES_QL_TARGET;
134 shared_timer->threshold_high = DEFAULT_NES_QL_HIGH;
135 }
136
137 /* todo use netdev->mtu to set thresholds */
138 spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
139 }
140
141
142 /**
143 * nes_nic_init_timer
144 */
145 static void nes_nic_init_timer(struct nes_device *nesdev)
146 {
147 unsigned long flags;
148 struct nes_adapter *nesadapter = nesdev->nesadapter;
149 struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
150
151 spin_lock_irqsave(&nesadapter->periodic_timer_lock, flags);
152
153 if (shared_timer->timer_in_use_old == 0) {
154 nesdev->deepcq_count = 0;
155 shared_timer->timer_direction_upward = 0;
156 shared_timer->timer_direction_downward = 0;
157 shared_timer->timer_in_use = NES_NIC_FAST_TIMER;
158 shared_timer->timer_in_use_old = 0;
159
160 }
161 if (shared_timer->timer_in_use != shared_timer->timer_in_use_old) {
162 shared_timer->timer_in_use_old = shared_timer->timer_in_use;
163 nes_write32(nesdev->regs+NES_PERIODIC_CONTROL,
164 0x80000000 | ((u32)(shared_timer->timer_in_use*8)));
165 }
166 /* todo use netdev->mtu to set thresholds */
167 spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
168 }
169
170
171 /**
172 * nes_nic_tune_timer
173 */
174 static void nes_nic_tune_timer(struct nes_device *nesdev)
175 {
176 unsigned long flags;
177 struct nes_adapter *nesadapter = nesdev->nesadapter;
178 struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
179 u16 cq_count = nesdev->currcq_count;
180
181 spin_lock_irqsave(&nesadapter->periodic_timer_lock, flags);
182
183 if (shared_timer->cq_count_old <= cq_count)
184 shared_timer->cq_direction_downward = 0;
185 else
186 shared_timer->cq_direction_downward++;
187 shared_timer->cq_count_old = cq_count;
188 if (shared_timer->cq_direction_downward > NES_NIC_CQ_DOWNWARD_TREND) {
189 if (cq_count <= shared_timer->threshold_low &&
190 shared_timer->threshold_low > 4) {
191 shared_timer->threshold_low = shared_timer->threshold_low/2;
192 shared_timer->cq_direction_downward=0;
193 nesdev->currcq_count = 0;
194 spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
195 return;
196 }
197 }
198
199 if (cq_count > 1) {
200 nesdev->deepcq_count += cq_count;
201 if (cq_count <= shared_timer->threshold_low) { /* increase timer gently */
202 shared_timer->timer_direction_upward++;
203 shared_timer->timer_direction_downward = 0;
204 } else if (cq_count <= shared_timer->threshold_target) { /* balanced */
205 shared_timer->timer_direction_upward = 0;
206 shared_timer->timer_direction_downward = 0;
207 } else if (cq_count <= shared_timer->threshold_high) { /* decrease timer gently */
208 shared_timer->timer_direction_downward++;
209 shared_timer->timer_direction_upward = 0;
210 } else if (cq_count <= (shared_timer->threshold_high) * 2) {
211 shared_timer->timer_in_use -= 2;
212 shared_timer->timer_direction_upward = 0;
213 shared_timer->timer_direction_downward++;
214 } else {
215 shared_timer->timer_in_use -= 4;
216 shared_timer->timer_direction_upward = 0;
217 shared_timer->timer_direction_downward++;
218 }
219
220 if (shared_timer->timer_direction_upward > 3 ) { /* using history */
221 shared_timer->timer_in_use += 3;
222 shared_timer->timer_direction_upward = 0;
223 shared_timer->timer_direction_downward = 0;
224 }
225 if (shared_timer->timer_direction_downward > 5) { /* using history */
226 shared_timer->timer_in_use -= 4 ;
227 shared_timer->timer_direction_downward = 0;
228 shared_timer->timer_direction_upward = 0;
229 }
230 }
231
232 /* boundary checking */
233 if (shared_timer->timer_in_use > shared_timer->threshold_high)
234 shared_timer->timer_in_use = shared_timer->threshold_high;
235 else if (shared_timer->timer_in_use < shared_timer->threshold_low)
236 shared_timer->timer_in_use = shared_timer->threshold_low;
237
238 nesdev->currcq_count = 0;
239
240 spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
241 }
242
243
244 /**
245 * nes_init_adapter - initialize adapter
246 */
247 struct nes_adapter *nes_init_adapter(struct nes_device *nesdev, u8 hw_rev) {
248 struct nes_adapter *nesadapter = NULL;
249 unsigned long num_pds;
250 u32 u32temp;
251 u32 port_count;
252 u16 max_rq_wrs;
253 u16 max_sq_wrs;
254 u32 max_mr;
255 u32 max_256pbl;
256 u32 max_4kpbl;
257 u32 max_qp;
258 u32 max_irrq;
259 u32 max_cq;
260 u32 hte_index_mask;
261 u32 adapter_size;
262 u32 arp_table_size;
263 u16 vendor_id;
264 u16 device_id;
265 u8 OneG_Mode;
266 u8 func_index;
267
268 /* search the list of existing adapters */
269 list_for_each_entry(nesadapter, &nes_adapter_list, list) {
270 nes_debug(NES_DBG_INIT, "Searching Adapter list for PCI devfn = 0x%X,"
271 " adapter PCI slot/bus = %u/%u, pci devices PCI slot/bus = %u/%u, .\n",
272 nesdev->pcidev->devfn,
273 PCI_SLOT(nesadapter->devfn),
274 nesadapter->bus_number,
275 PCI_SLOT(nesdev->pcidev->devfn),
276 nesdev->pcidev->bus->number );
277 if ((PCI_SLOT(nesadapter->devfn) == PCI_SLOT(nesdev->pcidev->devfn)) &&
278 (nesadapter->bus_number == nesdev->pcidev->bus->number)) {
279 nesadapter->ref_count++;
280 return nesadapter;
281 }
282 }
283
284 /* no adapter found */
285 num_pds = pci_resource_len(nesdev->pcidev, BAR_1) >> PAGE_SHIFT;
286 if ((hw_rev != NE020_REV) && (hw_rev != NE020_REV1)) {
287 nes_debug(NES_DBG_INIT, "NE020 driver detected unknown hardware revision 0x%x\n",
288 hw_rev);
289 return NULL;
290 }
291
292 nes_debug(NES_DBG_INIT, "Determine Soft Reset, QP_control=0x%x, CPU0=0x%x, CPU1=0x%x, CPU2=0x%x\n",
293 nes_read_indexed(nesdev, NES_IDX_QP_CONTROL + PCI_FUNC(nesdev->pcidev->devfn) * 8),
294 nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS),
295 nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS + 4),
296 nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS + 8));
297
298 nes_debug(NES_DBG_INIT, "Reset and init NE020\n");
299
300
301 if ((port_count = nes_reset_adapter_ne020(nesdev, &OneG_Mode)) == 0)
302 return NULL;
303
304 max_qp = nes_read_indexed(nesdev, NES_IDX_QP_CTX_SIZE);
305 nes_debug(NES_DBG_INIT, "QP_CTX_SIZE=%u\n", max_qp);
306
307 u32temp = nes_read_indexed(nesdev, NES_IDX_QUAD_HASH_TABLE_SIZE);
308 if (max_qp > ((u32)1 << (u32temp & 0x001f))) {
309 nes_debug(NES_DBG_INIT, "Reducing Max QPs to %u due to hash table size = 0x%08X\n",
310 max_qp, u32temp);
311 max_qp = (u32)1 << (u32temp & 0x001f);
312 }
313
314 hte_index_mask = ((u32)1 << ((u32temp & 0x001f)+1))-1;
315 nes_debug(NES_DBG_INIT, "Max QP = %u, hte_index_mask = 0x%08X.\n",
316 max_qp, hte_index_mask);
317
318 u32temp = nes_read_indexed(nesdev, NES_IDX_IRRQ_COUNT);
319
320 max_irrq = 1 << (u32temp & 0x001f);
321
322 if (max_qp > max_irrq) {
323 max_qp = max_irrq;
324 nes_debug(NES_DBG_INIT, "Reducing Max QPs to %u due to Available Q1s.\n",
325 max_qp);
326 }
327
328 /* there should be no reason to allocate more pds than qps */
329 if (num_pds > max_qp)
330 num_pds = max_qp;
331
332 u32temp = nes_read_indexed(nesdev, NES_IDX_MRT_SIZE);
333 max_mr = (u32)8192 << (u32temp & 0x7);
334
335 u32temp = nes_read_indexed(nesdev, NES_IDX_PBL_REGION_SIZE);
336 max_256pbl = (u32)1 << (u32temp & 0x0000001f);
337 max_4kpbl = (u32)1 << ((u32temp >> 16) & 0x0000001f);
338 max_cq = nes_read_indexed(nesdev, NES_IDX_CQ_CTX_SIZE);
339
340 u32temp = nes_read_indexed(nesdev, NES_IDX_ARP_CACHE_SIZE);
341 arp_table_size = 1 << u32temp;
342
343 adapter_size = (sizeof(struct nes_adapter) +
344 (sizeof(unsigned long)-1)) & (~(sizeof(unsigned long)-1));
345 adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(max_qp);
346 adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(max_mr);
347 adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(max_cq);
348 adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(num_pds);
349 adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(arp_table_size);
350 adapter_size += sizeof(struct nes_qp **) * max_qp;
351
352 /* allocate a new adapter struct */
353 nesadapter = kzalloc(adapter_size, GFP_KERNEL);
354 if (nesadapter == NULL) {
355 return NULL;
356 }
357
358 nes_debug(NES_DBG_INIT, "Allocating new nesadapter @ %p, size = %u (actual size = %u).\n",
359 nesadapter, (u32)sizeof(struct nes_adapter), adapter_size);
360
361 if (nes_read_eeprom_values(nesdev, nesadapter)) {
362 printk(KERN_ERR PFX "Unable to read EEPROM data.\n");
363 kfree(nesadapter);
364 return NULL;
365 }
366
367 nesadapter->vendor_id = (((u32) nesadapter->mac_addr_high) << 8) |
368 (nesadapter->mac_addr_low >> 24);
369
370 pci_bus_read_config_word(nesdev->pcidev->bus, nesdev->pcidev->devfn,
371 PCI_DEVICE_ID, &device_id);
372 nesadapter->vendor_part_id = device_id;
373
374 if (nes_init_serdes(nesdev, hw_rev, port_count, nesadapter,
375 OneG_Mode)) {
376 kfree(nesadapter);
377 return NULL;
378 }
379 nes_init_csr_ne020(nesdev, hw_rev, port_count);
380
381 memset(nesadapter->pft_mcast_map, 255,
382 sizeof nesadapter->pft_mcast_map);
383
384 /* populate the new nesadapter */
385 nesadapter->devfn = nesdev->pcidev->devfn;
386 nesadapter->bus_number = nesdev->pcidev->bus->number;
387 nesadapter->ref_count = 1;
388 nesadapter->timer_int_req = 0xffff0000;
389 nesadapter->OneG_Mode = OneG_Mode;
390 nesadapter->doorbell_start = nesdev->doorbell_region;
391
392 /* nesadapter->tick_delta = clk_divisor; */
393 nesadapter->hw_rev = hw_rev;
394 nesadapter->port_count = port_count;
395
396 nesadapter->max_qp = max_qp;
397 nesadapter->hte_index_mask = hte_index_mask;
398 nesadapter->max_irrq = max_irrq;
399 nesadapter->max_mr = max_mr;
400 nesadapter->max_256pbl = max_256pbl - 1;
401 nesadapter->max_4kpbl = max_4kpbl - 1;
402 nesadapter->max_cq = max_cq;
403 nesadapter->free_256pbl = max_256pbl - 1;
404 nesadapter->free_4kpbl = max_4kpbl - 1;
405 nesadapter->max_pd = num_pds;
406 nesadapter->arp_table_size = arp_table_size;
407
408 nesadapter->et_pkt_rate_low = NES_TIMER_ENABLE_LIMIT;
409 if (nes_drv_opt & NES_DRV_OPT_DISABLE_INT_MOD) {
410 nesadapter->et_use_adaptive_rx_coalesce = 0;
411 nesadapter->timer_int_limit = NES_TIMER_INT_LIMIT;
412 nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
413 } else {
414 nesadapter->et_use_adaptive_rx_coalesce = 1;
415 nesadapter->timer_int_limit = NES_TIMER_INT_LIMIT_DYNAMIC;
416 nesadapter->et_rx_coalesce_usecs_irq = 0;
417 printk(PFX "%s: Using Adaptive Interrupt Moderation\n", __func__);
418 }
419 /* Setup and enable the periodic timer */
420 if (nesadapter->et_rx_coalesce_usecs_irq)
421 nes_write32(nesdev->regs+NES_PERIODIC_CONTROL, 0x80000000 |
422 ((u32)(nesadapter->et_rx_coalesce_usecs_irq * 8)));
423 else
424 nes_write32(nesdev->regs+NES_PERIODIC_CONTROL, 0x00000000);
425
426 nesadapter->base_pd = 1;
427
428 nesadapter->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
429 IB_DEVICE_MEM_WINDOW |
430 IB_DEVICE_MEM_MGT_EXTENSIONS;
431
432 nesadapter->allocated_qps = (unsigned long *)&(((unsigned char *)nesadapter)
433 [(sizeof(struct nes_adapter)+(sizeof(unsigned long)-1))&(~(sizeof(unsigned long)-1))]);
434 nesadapter->allocated_cqs = &nesadapter->allocated_qps[BITS_TO_LONGS(max_qp)];
435 nesadapter->allocated_mrs = &nesadapter->allocated_cqs[BITS_TO_LONGS(max_cq)];
436 nesadapter->allocated_pds = &nesadapter->allocated_mrs[BITS_TO_LONGS(max_mr)];
437 nesadapter->allocated_arps = &nesadapter->allocated_pds[BITS_TO_LONGS(num_pds)];
438 nesadapter->qp_table = (struct nes_qp **)(&nesadapter->allocated_arps[BITS_TO_LONGS(arp_table_size)]);
439
440
441 /* mark the usual suspect QPs, MR and CQs as in use */
442 for (u32temp = 0; u32temp < NES_FIRST_QPN; u32temp++) {
443 set_bit(u32temp, nesadapter->allocated_qps);
444 set_bit(u32temp, nesadapter->allocated_cqs);
445 }
446 set_bit(0, nesadapter->allocated_mrs);
447
448 for (u32temp = 0; u32temp < 20; u32temp++)
449 set_bit(u32temp, nesadapter->allocated_pds);
450 u32temp = nes_read_indexed(nesdev, NES_IDX_QP_MAX_CFG_SIZES);
451
452 max_rq_wrs = ((u32temp >> 8) & 3);
453 switch (max_rq_wrs) {
454 case 0:
455 max_rq_wrs = 4;
456 break;
457 case 1:
458 max_rq_wrs = 16;
459 break;
460 case 2:
461 max_rq_wrs = 32;
462 break;
463 case 3:
464 max_rq_wrs = 512;
465 break;
466 }
467
468 max_sq_wrs = (u32temp & 3);
469 switch (max_sq_wrs) {
470 case 0:
471 max_sq_wrs = 4;
472 break;
473 case 1:
474 max_sq_wrs = 16;
475 break;
476 case 2:
477 max_sq_wrs = 32;
478 break;
479 case 3:
480 max_sq_wrs = 512;
481 break;
482 }
483 nesadapter->max_qp_wr = min(max_rq_wrs, max_sq_wrs);
484 nesadapter->max_irrq_wr = (u32temp >> 16) & 3;
485
486 nesadapter->max_sge = 4;
487 nesadapter->max_cqe = 32766;
488
489 if (nes_read_eeprom_values(nesdev, nesadapter)) {
490 printk(KERN_ERR PFX "Unable to read EEPROM data.\n");
491 kfree(nesadapter);
492 return NULL;
493 }
494
495 u32temp = nes_read_indexed(nesdev, NES_IDX_TCP_TIMER_CONFIG);
496 nes_write_indexed(nesdev, NES_IDX_TCP_TIMER_CONFIG,
497 (u32temp & 0xff000000) | (nesadapter->tcp_timer_core_clk_divisor & 0x00ffffff));
498
499 /* setup port configuration */
500 if (nesadapter->port_count == 1) {
501 nesadapter->log_port = 0x00000000;
502 if (nes_drv_opt & NES_DRV_OPT_DUAL_LOGICAL_PORT)
503 nes_write_indexed(nesdev, NES_IDX_TX_POOL_SIZE, 0x00000002);
504 else
505 nes_write_indexed(nesdev, NES_IDX_TX_POOL_SIZE, 0x00000003);
506 } else {
507 if (nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
508 nesadapter->log_port = 0x000000D8;
509 } else {
510 if (nesadapter->port_count == 2)
511 nesadapter->log_port = 0x00000044;
512 else
513 nesadapter->log_port = 0x000000e4;
514 }
515 nes_write_indexed(nesdev, NES_IDX_TX_POOL_SIZE, 0x00000003);
516 }
517
518 nes_write_indexed(nesdev, NES_IDX_NIC_LOGPORT_TO_PHYPORT,
519 nesadapter->log_port);
520 nes_debug(NES_DBG_INIT, "Probe time, LOG2PHY=%u\n",
521 nes_read_indexed(nesdev, NES_IDX_NIC_LOGPORT_TO_PHYPORT));
522
523 spin_lock_init(&nesadapter->resource_lock);
524 spin_lock_init(&nesadapter->phy_lock);
525 spin_lock_init(&nesadapter->pbl_lock);
526 spin_lock_init(&nesadapter->periodic_timer_lock);
527
528 INIT_LIST_HEAD(&nesadapter->nesvnic_list[0]);
529 INIT_LIST_HEAD(&nesadapter->nesvnic_list[1]);
530 INIT_LIST_HEAD(&nesadapter->nesvnic_list[2]);
531 INIT_LIST_HEAD(&nesadapter->nesvnic_list[3]);
532
533 if ((!nesadapter->OneG_Mode) && (nesadapter->port_count == 2)) {
534 u32 pcs_control_status0, pcs_control_status1;
535 u32 reset_value;
536 u32 i = 0;
537 u32 int_cnt = 0;
538 u32 ext_cnt = 0;
539 unsigned long flags;
540 u32 j = 0;
541
542 pcs_control_status0 = nes_read_indexed(nesdev,
543 NES_IDX_PHY_PCS_CONTROL_STATUS0);
544 pcs_control_status1 = nes_read_indexed(nesdev,
545 NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
546
547 for (i = 0; i < NES_MAX_LINK_CHECK; i++) {
548 pcs_control_status0 = nes_read_indexed(nesdev,
549 NES_IDX_PHY_PCS_CONTROL_STATUS0);
550 pcs_control_status1 = nes_read_indexed(nesdev,
551 NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
552 if ((0x0F000100 == (pcs_control_status0 & 0x0F000100))
553 || (0x0F000100 == (pcs_control_status1 & 0x0F000100)))
554 int_cnt++;
555 msleep(1);
556 }
557 if (int_cnt > 1) {
558 spin_lock_irqsave(&nesadapter->phy_lock, flags);
559 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F0C8);
560 mh_detected++;
561 reset_value = nes_read32(nesdev->regs+NES_SOFTWARE_RESET);
562 reset_value |= 0x0000003d;
563 nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value);
564
565 while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET)
566 & 0x00000040) != 0x00000040) && (j++ < 5000));
567 spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
568
569 pcs_control_status0 = nes_read_indexed(nesdev,
570 NES_IDX_PHY_PCS_CONTROL_STATUS0);
571 pcs_control_status1 = nes_read_indexed(nesdev,
572 NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
573
574 for (i = 0; i < NES_MAX_LINK_CHECK; i++) {
575 pcs_control_status0 = nes_read_indexed(nesdev,
576 NES_IDX_PHY_PCS_CONTROL_STATUS0);
577 pcs_control_status1 = nes_read_indexed(nesdev,
578 NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
579 if ((0x0F000100 == (pcs_control_status0 & 0x0F000100))
580 || (0x0F000100 == (pcs_control_status1 & 0x0F000100))) {
581 if (++ext_cnt > int_cnt) {
582 spin_lock_irqsave(&nesadapter->phy_lock, flags);
583 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1,
584 0x0000F088);
585 mh_detected++;
586 reset_value = nes_read32(nesdev->regs+NES_SOFTWARE_RESET);
587 reset_value |= 0x0000003d;
588 nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value);
589
590 while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET)
591 & 0x00000040) != 0x00000040) && (j++ < 5000));
592 spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
593 break;
594 }
595 }
596 msleep(1);
597 }
598 }
599 }
600
601 if (nesadapter->hw_rev == NE020_REV) {
602 init_timer(&nesadapter->mh_timer);
603 nesadapter->mh_timer.function = nes_mh_fix;
604 nesadapter->mh_timer.expires = jiffies + (HZ/5); /* 1 second */
605 nesadapter->mh_timer.data = (unsigned long)nesdev;
606 add_timer(&nesadapter->mh_timer);
607 } else {
608 nes_write32(nesdev->regs+NES_INTF_INT_STAT, 0x0f000000);
609 }
610
611 init_timer(&nesadapter->lc_timer);
612 nesadapter->lc_timer.function = nes_clc;
613 nesadapter->lc_timer.expires = jiffies + 3600 * HZ; /* 1 hour */
614 nesadapter->lc_timer.data = (unsigned long)nesdev;
615 add_timer(&nesadapter->lc_timer);
616
617 list_add_tail(&nesadapter->list, &nes_adapter_list);
618
619 for (func_index = 0; func_index < 8; func_index++) {
620 pci_bus_read_config_word(nesdev->pcidev->bus,
621 PCI_DEVFN(PCI_SLOT(nesdev->pcidev->devfn),
622 func_index), 0, &vendor_id);
623 if (vendor_id == 0xffff)
624 break;
625 }
626 nes_debug(NES_DBG_INIT, "%s %d functions found for %s.\n", __func__,
627 func_index, pci_name(nesdev->pcidev));
628 nesadapter->adapter_fcn_count = func_index;
629
630 return nesadapter;
631 }
632
633
634 /**
635 * nes_reset_adapter_ne020
636 */
637 static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_Mode)
638 {
639 u32 port_count;
640 u32 u32temp;
641 u32 i;
642
643 u32temp = nes_read32(nesdev->regs+NES_SOFTWARE_RESET);
644 port_count = ((u32temp & 0x00000300) >> 8) + 1;
645 /* TODO: assuming that both SERDES are set the same for now */
646 *OneG_Mode = (u32temp & 0x00003c00) ? 0 : 1;
647 nes_debug(NES_DBG_INIT, "Initial Software Reset = 0x%08X, port_count=%u\n",
648 u32temp, port_count);
649 if (*OneG_Mode)
650 nes_debug(NES_DBG_INIT, "Running in 1G mode.\n");
651 u32temp &= 0xff00ffc0;
652 switch (port_count) {
653 case 1:
654 u32temp |= 0x00ee0000;
655 break;
656 case 2:
657 u32temp |= 0x00cc0000;
658 break;
659 case 4:
660 u32temp |= 0x00000000;
661 break;
662 default:
663 return 0;
664 break;
665 }
666
667 /* check and do full reset if needed */
668 if (nes_read_indexed(nesdev, NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8))) {
669 nes_debug(NES_DBG_INIT, "Issuing Full Soft reset = 0x%08X\n", u32temp | 0xd);
670 nes_write32(nesdev->regs+NES_SOFTWARE_RESET, u32temp | 0xd);
671
672 i = 0;
673 while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET) & 0x00000040) == 0) && i++ < 10000)
674 mdelay(1);
675 if (i > 10000) {
676 nes_debug(NES_DBG_INIT, "Did not see full soft reset done.\n");
677 return 0;
678 }
679
680 i = 0;
681 while ((nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS) != 0x80) && i++ < 10000)
682 mdelay(1);
683 if (i > 10000) {
684 printk(KERN_ERR PFX "Internal CPU not ready, status = %02X\n",
685 nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS));
686 return 0;
687 }
688 }
689
690 /* port reset */
691 switch (port_count) {
692 case 1:
693 u32temp |= 0x00ee0010;
694 break;
695 case 2:
696 u32temp |= 0x00cc0030;
697 break;
698 case 4:
699 u32temp |= 0x00000030;
700 break;
701 }
702
703 nes_debug(NES_DBG_INIT, "Issuing Port Soft reset = 0x%08X\n", u32temp | 0xd);
704 nes_write32(nesdev->regs+NES_SOFTWARE_RESET, u32temp | 0xd);
705
706 i = 0;
707 while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET) & 0x00000040) == 0) && i++ < 10000)
708 mdelay(1);
709 if (i > 10000) {
710 nes_debug(NES_DBG_INIT, "Did not see port soft reset done.\n");
711 return 0;
712 }
713
714 /* serdes 0 */
715 i = 0;
716 while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0)
717 & 0x0000000f)) != 0x0000000f) && i++ < 5000)
718 mdelay(1);
719 if (i > 5000) {
720 nes_debug(NES_DBG_INIT, "Serdes 0 not ready, status=%x\n", u32temp);
721 return 0;
722 }
723
724 /* serdes 1 */
725 if (port_count > 1) {
726 i = 0;
727 while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS1)
728 & 0x0000000f)) != 0x0000000f) && i++ < 5000)
729 mdelay(1);
730 if (i > 5000) {
731 nes_debug(NES_DBG_INIT, "Serdes 1 not ready, status=%x\n", u32temp);
732 return 0;
733 }
734 }
735
736 return port_count;
737 }
738
739
740 /**
741 * nes_init_serdes
742 */
743 static int nes_init_serdes(struct nes_device *nesdev, u8 hw_rev, u8 port_count,
744 struct nes_adapter *nesadapter, u8 OneG_Mode)
745 {
746 int i;
747 u32 u32temp;
748 u32 sds;
749
750 if (hw_rev != NE020_REV) {
751 /* init serdes 0 */
752 switch (nesadapter->phy_type[0]) {
753 case NES_PHY_TYPE_CX4:
754 if (wide_ppm_offset)
755 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000FFFAA);
756 else
757 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000FF);
758 break;
759 case NES_PHY_TYPE_KR:
760 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000FF);
761 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP0, 0x00000000);
762 break;
763 case NES_PHY_TYPE_PUMA_1G:
764 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000FF);
765 sds = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0);
766 sds |= 0x00000100;
767 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0, sds);
768 break;
769 default:
770 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000FF);
771 break;
772 }
773
774 if (!OneG_Mode)
775 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_HIGHZ_LANE_MODE0, 0x11110000);
776
777 if (port_count < 2)
778 return 0;
779
780 /* init serdes 1 */
781 if (!(OneG_Mode && (nesadapter->phy_type[1] != NES_PHY_TYPE_PUMA_1G)))
782 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL1, 0x000000FF);
783
784 switch (nesadapter->phy_type[1]) {
785 case NES_PHY_TYPE_ARGUS:
786 case NES_PHY_TYPE_SFP_D:
787 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP0, 0x00000000);
788 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP1, 0x00000000);
789 break;
790 case NES_PHY_TYPE_CX4:
791 if (wide_ppm_offset)
792 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL1, 0x000FFFAA);
793 break;
794 case NES_PHY_TYPE_KR:
795 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP1, 0x00000000);
796 break;
797 case NES_PHY_TYPE_PUMA_1G:
798 sds = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1);
799 sds |= 0x000000100;
800 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, sds);
801 }
802 if (!OneG_Mode) {
803 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_HIGHZ_LANE_MODE1, 0x11110000);
804 sds = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1);
805 sds &= 0xFFFFFFBF;
806 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, sds);
807 }
808 } else {
809 /* init serdes 0 */
810 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0, 0x00000008);
811 i = 0;
812 while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0)
813 & 0x0000000f)) != 0x0000000f) && i++ < 5000)
814 mdelay(1);
815 if (i > 5000) {
816 nes_debug(NES_DBG_PHY, "Init: serdes 0 not ready, status=%x\n", u32temp);
817 return 1;
818 }
819 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP0, 0x000bdef7);
820 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_DRIVE0, 0x9ce73000);
821 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_MODE0, 0x0ff00000);
822 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_SIGDET0, 0x00000000);
823 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_BYPASS0, 0x00000000);
824 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_LOOPBACK_CONTROL0, 0x00000000);
825 if (OneG_Mode)
826 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL0, 0xf0182222);
827 else
828 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL0, 0xf0042222);
829
830 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000ff);
831 if (port_count > 1) {
832 /* init serdes 1 */
833 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x00000048);
834 i = 0;
835 while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS1)
836 & 0x0000000f)) != 0x0000000f) && (i++ < 5000))
837 mdelay(1);
838 if (i > 5000) {
839 printk("%s: Init: serdes 1 not ready, status=%x\n", __func__, u32temp);
840 /* return 1; */
841 }
842 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP1, 0x000bdef7);
843 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_DRIVE1, 0x9ce73000);
844 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_MODE1, 0x0ff00000);
845 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_SIGDET1, 0x00000000);
846 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_BYPASS1, 0x00000000);
847 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_LOOPBACK_CONTROL1, 0x00000000);
848 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL1, 0xf0002222);
849 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL1, 0x000000ff);
850 }
851 }
852 return 0;
853 }
854
855
856 /**
857 * nes_init_csr_ne020
858 * Initialize registers for ne020 hardware
859 */
860 static void nes_init_csr_ne020(struct nes_device *nesdev, u8 hw_rev, u8 port_count)
861 {
862 u32 u32temp;
863
864 nes_debug(NES_DBG_INIT, "port_count=%d\n", port_count);
865
866 nes_write_indexed(nesdev, 0x000001E4, 0x00000007);
867 /* nes_write_indexed(nesdev, 0x000001E8, 0x000208C4); */
868 nes_write_indexed(nesdev, 0x000001E8, 0x00020874);
869 nes_write_indexed(nesdev, 0x000001D8, 0x00048002);
870 /* nes_write_indexed(nesdev, 0x000001D8, 0x0004B002); */
871 nes_write_indexed(nesdev, 0x000001FC, 0x00050005);
872 nes_write_indexed(nesdev, 0x00000600, 0x55555555);
873 nes_write_indexed(nesdev, 0x00000604, 0x55555555);
874
875 /* TODO: move these MAC register settings to NIC bringup */
876 nes_write_indexed(nesdev, 0x00002000, 0x00000001);
877 nes_write_indexed(nesdev, 0x00002004, 0x00000001);
878 nes_write_indexed(nesdev, 0x00002008, 0x0000FFFF);
879 nes_write_indexed(nesdev, 0x0000200C, 0x00000001);
880 nes_write_indexed(nesdev, 0x00002010, 0x000003c1);
881 nes_write_indexed(nesdev, 0x0000201C, 0x75345678);
882 if (port_count > 1) {
883 nes_write_indexed(nesdev, 0x00002200, 0x00000001);
884 nes_write_indexed(nesdev, 0x00002204, 0x00000001);
885 nes_write_indexed(nesdev, 0x00002208, 0x0000FFFF);
886 nes_write_indexed(nesdev, 0x0000220C, 0x00000001);
887 nes_write_indexed(nesdev, 0x00002210, 0x000003c1);
888 nes_write_indexed(nesdev, 0x0000221C, 0x75345678);
889 nes_write_indexed(nesdev, 0x00000908, 0x20000001);
890 }
891 if (port_count > 2) {
892 nes_write_indexed(nesdev, 0x00002400, 0x00000001);
893 nes_write_indexed(nesdev, 0x00002404, 0x00000001);
894 nes_write_indexed(nesdev, 0x00002408, 0x0000FFFF);
895 nes_write_indexed(nesdev, 0x0000240C, 0x00000001);
896 nes_write_indexed(nesdev, 0x00002410, 0x000003c1);
897 nes_write_indexed(nesdev, 0x0000241C, 0x75345678);
898 nes_write_indexed(nesdev, 0x00000910, 0x20000001);
899
900 nes_write_indexed(nesdev, 0x00002600, 0x00000001);
901 nes_write_indexed(nesdev, 0x00002604, 0x00000001);
902 nes_write_indexed(nesdev, 0x00002608, 0x0000FFFF);
903 nes_write_indexed(nesdev, 0x0000260C, 0x00000001);
904 nes_write_indexed(nesdev, 0x00002610, 0x000003c1);
905 nes_write_indexed(nesdev, 0x0000261C, 0x75345678);
906 nes_write_indexed(nesdev, 0x00000918, 0x20000001);
907 }
908
909 nes_write_indexed(nesdev, 0x00005000, 0x00018000);
910 /* nes_write_indexed(nesdev, 0x00005000, 0x00010000); */
911 nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1, (wqm_quanta << 1) |
912 0x00000001);
913 nes_write_indexed(nesdev, 0x00005008, 0x1F1F1F1F);
914 nes_write_indexed(nesdev, 0x00005010, 0x1F1F1F1F);
915 nes_write_indexed(nesdev, 0x00005018, 0x1F1F1F1F);
916 nes_write_indexed(nesdev, 0x00005020, 0x1F1F1F1F);
917 nes_write_indexed(nesdev, 0x00006090, 0xFFFFFFFF);
918
919 /* TODO: move this to code, get from EEPROM */
920 nes_write_indexed(nesdev, 0x00000900, 0x20000001);
921 nes_write_indexed(nesdev, 0x000060C0, 0x0000028e);
922 nes_write_indexed(nesdev, 0x000060C8, 0x00000020);
923
924 nes_write_indexed(nesdev, 0x000001EC, 0x7b2625a0);
925 /* nes_write_indexed(nesdev, 0x000001EC, 0x5f2625a0); */
926
927 if (hw_rev != NE020_REV) {
928 u32temp = nes_read_indexed(nesdev, 0x000008e8);
929 u32temp |= 0x80000000;
930 nes_write_indexed(nesdev, 0x000008e8, u32temp);
931 u32temp = nes_read_indexed(nesdev, 0x000021f8);
932 u32temp &= 0x7fffffff;
933 u32temp |= 0x7fff0010;
934 nes_write_indexed(nesdev, 0x000021f8, u32temp);
935 if (port_count > 1) {
936 u32temp = nes_read_indexed(nesdev, 0x000023f8);
937 u32temp &= 0x7fffffff;
938 u32temp |= 0x7fff0010;
939 nes_write_indexed(nesdev, 0x000023f8, u32temp);
940 }
941 }
942 }
943
944
945 /**
946 * nes_destroy_adapter - destroy the adapter structure
947 */
948 void nes_destroy_adapter(struct nes_adapter *nesadapter)
949 {
950 struct nes_adapter *tmp_adapter;
951
952 list_for_each_entry(tmp_adapter, &nes_adapter_list, list) {
953 nes_debug(NES_DBG_SHUTDOWN, "Nes Adapter list entry = 0x%p.\n",
954 tmp_adapter);
955 }
956
957 nesadapter->ref_count--;
958 if (!nesadapter->ref_count) {
959 if (nesadapter->hw_rev == NE020_REV) {
960 del_timer(&nesadapter->mh_timer);
961 }
962 del_timer(&nesadapter->lc_timer);
963
964 list_del(&nesadapter->list);
965 kfree(nesadapter);
966 }
967 }
968
969
970 /**
971 * nes_init_cqp
972 */
973 int nes_init_cqp(struct nes_device *nesdev)
974 {
975 struct nes_adapter *nesadapter = nesdev->nesadapter;
976 struct nes_hw_cqp_qp_context *cqp_qp_context;
977 struct nes_hw_cqp_wqe *cqp_wqe;
978 struct nes_hw_ceq *ceq;
979 struct nes_hw_ceq *nic_ceq;
980 struct nes_hw_aeq *aeq;
981 void *vmem;
982 dma_addr_t pmem;
983 u32 count=0;
984 u32 cqp_head;
985 u64 u64temp;
986 u32 u32temp;
987
988 /* allocate CQP memory */
989 /* Need to add max_cq to the aeq size once cq overflow checking is added back */
990 /* SQ is 512 byte aligned, others are 256 byte aligned */
991 nesdev->cqp_mem_size = 512 +
992 (sizeof(struct nes_hw_cqp_wqe) * NES_CQP_SQ_SIZE) +
993 (sizeof(struct nes_hw_cqe) * NES_CCQ_SIZE) +
994 max(((u32)sizeof(struct nes_hw_ceqe) * NES_CCEQ_SIZE), (u32)256) +
995 max(((u32)sizeof(struct nes_hw_ceqe) * NES_NIC_CEQ_SIZE), (u32)256) +
996 (sizeof(struct nes_hw_aeqe) * nesadapter->max_qp) +
997 sizeof(struct nes_hw_cqp_qp_context);
998
999 nesdev->cqp_vbase = pci_alloc_consistent(nesdev->pcidev, nesdev->cqp_mem_size,
1000 &nesdev->cqp_pbase);
1001 if (!nesdev->cqp_vbase) {
1002 nes_debug(NES_DBG_INIT, "Unable to allocate memory for host descriptor rings\n");
1003 return -ENOMEM;
1004 }
1005 memset(nesdev->cqp_vbase, 0, nesdev->cqp_mem_size);
1006
1007 /* Allocate a twice the number of CQP requests as the SQ size */
1008 nesdev->nes_cqp_requests = kzalloc(sizeof(struct nes_cqp_request) *
1009 2 * NES_CQP_SQ_SIZE, GFP_KERNEL);
1010 if (nesdev->nes_cqp_requests == NULL) {
1011 nes_debug(NES_DBG_INIT, "Unable to allocate memory CQP request entries.\n");
1012 pci_free_consistent(nesdev->pcidev, nesdev->cqp_mem_size, nesdev->cqp.sq_vbase,
1013 nesdev->cqp.sq_pbase);
1014 return -ENOMEM;
1015 }
1016
1017 nes_debug(NES_DBG_INIT, "Allocated CQP structures at %p (phys = %016lX), size = %u.\n",
1018 nesdev->cqp_vbase, (unsigned long)nesdev->cqp_pbase, nesdev->cqp_mem_size);
1019
1020 spin_lock_init(&nesdev->cqp.lock);
1021 init_waitqueue_head(&nesdev->cqp.waitq);
1022
1023 /* Setup Various Structures */
1024 vmem = (void *)(((unsigned long)nesdev->cqp_vbase + (512 - 1)) &
1025 ~(unsigned long)(512 - 1));
1026 pmem = (dma_addr_t)(((unsigned long long)nesdev->cqp_pbase + (512 - 1)) &
1027 ~(unsigned long long)(512 - 1));
1028
1029 nesdev->cqp.sq_vbase = vmem;
1030 nesdev->cqp.sq_pbase = pmem;
1031 nesdev->cqp.sq_size = NES_CQP_SQ_SIZE;
1032 nesdev->cqp.sq_head = 0;
1033 nesdev->cqp.sq_tail = 0;
1034 nesdev->cqp.qp_id = PCI_FUNC(nesdev->pcidev->devfn);
1035
1036 vmem += (sizeof(struct nes_hw_cqp_wqe) * nesdev->cqp.sq_size);
1037 pmem += (sizeof(struct nes_hw_cqp_wqe) * nesdev->cqp.sq_size);
1038
1039 nesdev->ccq.cq_vbase = vmem;
1040 nesdev->ccq.cq_pbase = pmem;
1041 nesdev->ccq.cq_size = NES_CCQ_SIZE;
1042 nesdev->ccq.cq_head = 0;
1043 nesdev->ccq.ce_handler = nes_cqp_ce_handler;
1044 nesdev->ccq.cq_number = PCI_FUNC(nesdev->pcidev->devfn);
1045
1046 vmem += (sizeof(struct nes_hw_cqe) * nesdev->ccq.cq_size);
1047 pmem += (sizeof(struct nes_hw_cqe) * nesdev->ccq.cq_size);
1048
1049 nesdev->ceq_index = PCI_FUNC(nesdev->pcidev->devfn);
1050 ceq = &nesadapter->ceq[nesdev->ceq_index];
1051 ceq->ceq_vbase = vmem;
1052 ceq->ceq_pbase = pmem;
1053 ceq->ceq_size = NES_CCEQ_SIZE;
1054 ceq->ceq_head = 0;
1055
1056 vmem += max(((u32)sizeof(struct nes_hw_ceqe) * ceq->ceq_size), (u32)256);
1057 pmem += max(((u32)sizeof(struct nes_hw_ceqe) * ceq->ceq_size), (u32)256);
1058
1059 nesdev->nic_ceq_index = PCI_FUNC(nesdev->pcidev->devfn) + 8;
1060 nic_ceq = &nesadapter->ceq[nesdev->nic_ceq_index];
1061 nic_ceq->ceq_vbase = vmem;
1062 nic_ceq->ceq_pbase = pmem;
1063 nic_ceq->ceq_size = NES_NIC_CEQ_SIZE;
1064 nic_ceq->ceq_head = 0;
1065
1066 vmem += max(((u32)sizeof(struct nes_hw_ceqe) * nic_ceq->ceq_size), (u32)256);
1067 pmem += max(((u32)sizeof(struct nes_hw_ceqe) * nic_ceq->ceq_size), (u32)256);
1068
1069 aeq = &nesadapter->aeq[PCI_FUNC(nesdev->pcidev->devfn)];
1070 aeq->aeq_vbase = vmem;
1071 aeq->aeq_pbase = pmem;
1072 aeq->aeq_size = nesadapter->max_qp;
1073 aeq->aeq_head = 0;
1074
1075 /* Setup QP Context */
1076 vmem += (sizeof(struct nes_hw_aeqe) * aeq->aeq_size);
1077 pmem += (sizeof(struct nes_hw_aeqe) * aeq->aeq_size);
1078
1079 cqp_qp_context = vmem;
1080 cqp_qp_context->context_words[0] =
1081 cpu_to_le32((PCI_FUNC(nesdev->pcidev->devfn) << 12) + (2 << 10));
1082 cqp_qp_context->context_words[1] = 0;
1083 cqp_qp_context->context_words[2] = cpu_to_le32((u32)nesdev->cqp.sq_pbase);
1084 cqp_qp_context->context_words[3] = cpu_to_le32(((u64)nesdev->cqp.sq_pbase) >> 32);
1085
1086
1087 /* Write the address to Create CQP */
1088 if ((sizeof(dma_addr_t) > 4)) {
1089 nes_write_indexed(nesdev,
1090 NES_IDX_CREATE_CQP_HIGH + (PCI_FUNC(nesdev->pcidev->devfn) * 8),
1091 ((u64)pmem) >> 32);
1092 } else {
1093 nes_write_indexed(nesdev,
1094 NES_IDX_CREATE_CQP_HIGH + (PCI_FUNC(nesdev->pcidev->devfn) * 8), 0);
1095 }
1096 nes_write_indexed(nesdev,
1097 NES_IDX_CREATE_CQP_LOW + (PCI_FUNC(nesdev->pcidev->devfn) * 8),
1098 (u32)pmem);
1099
1100 INIT_LIST_HEAD(&nesdev->cqp_avail_reqs);
1101 INIT_LIST_HEAD(&nesdev->cqp_pending_reqs);
1102
1103 for (count = 0; count < 2*NES_CQP_SQ_SIZE; count++) {
1104 init_waitqueue_head(&nesdev->nes_cqp_requests[count].waitq);
1105 list_add_tail(&nesdev->nes_cqp_requests[count].list, &nesdev->cqp_avail_reqs);
1106 }
1107
1108 /* Write Create CCQ WQE */
1109 cqp_head = nesdev->cqp.sq_head++;
1110 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1111 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1112 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
1113 (NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1114 NES_CQP_CQ_CHK_OVERFLOW | ((u32)nesdev->ccq.cq_size << 16)));
1115 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1116 (nesdev->ccq.cq_number |
1117 ((u32)nesdev->ceq_index << 16)));
1118 u64temp = (u64)nesdev->ccq.cq_pbase;
1119 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1120 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1121 u64temp = (unsigned long)&nesdev->ccq;
1122 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1123 cpu_to_le32((u32)(u64temp >> 1));
1124 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1125 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1126 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1127
1128 /* Write Create CEQ WQE */
1129 cqp_head = nesdev->cqp.sq_head++;
1130 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1131 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1132 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
1133 (NES_CQP_CREATE_CEQ + ((u32)nesdev->ceq_index << 8)));
1134 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CEQ_WQE_ELEMENT_COUNT_IDX, ceq->ceq_size);
1135 u64temp = (u64)ceq->ceq_pbase;
1136 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1137
1138 /* Write Create AEQ WQE */
1139 cqp_head = nesdev->cqp.sq_head++;
1140 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1141 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1142 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
1143 (NES_CQP_CREATE_AEQ + ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 8)));
1144 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_AEQ_WQE_ELEMENT_COUNT_IDX, aeq->aeq_size);
1145 u64temp = (u64)aeq->aeq_pbase;
1146 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1147
1148 /* Write Create NIC CEQ WQE */
1149 cqp_head = nesdev->cqp.sq_head++;
1150 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1151 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1152 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
1153 (NES_CQP_CREATE_CEQ + ((u32)nesdev->nic_ceq_index << 8)));
1154 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CEQ_WQE_ELEMENT_COUNT_IDX, nic_ceq->ceq_size);
1155 u64temp = (u64)nic_ceq->ceq_pbase;
1156 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1157
1158 /* Poll until CCQP done */
1159 count = 0;
1160 do {
1161 if (count++ > 1000) {
1162 printk(KERN_ERR PFX "Error creating CQP\n");
1163 pci_free_consistent(nesdev->pcidev, nesdev->cqp_mem_size,
1164 nesdev->cqp_vbase, nesdev->cqp_pbase);
1165 return -1;
1166 }
1167 udelay(10);
1168 } while (!(nes_read_indexed(nesdev,
1169 NES_IDX_QP_CONTROL + (PCI_FUNC(nesdev->pcidev->devfn) * 8)) & (1 << 8)));
1170
1171 nes_debug(NES_DBG_INIT, "CQP Status = 0x%08X\n", nes_read_indexed(nesdev,
1172 NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8)));
1173
1174 u32temp = 0x04800000;
1175 nes_write32(nesdev->regs+NES_WQE_ALLOC, u32temp | nesdev->cqp.qp_id);
1176
1177 /* wait for the CCQ, CEQ, and AEQ to get created */
1178 count = 0;
1179 do {
1180 if (count++ > 1000) {
1181 printk(KERN_ERR PFX "Error creating CCQ, CEQ, and AEQ\n");
1182 pci_free_consistent(nesdev->pcidev, nesdev->cqp_mem_size,
1183 nesdev->cqp_vbase, nesdev->cqp_pbase);
1184 return -1;
1185 }
1186 udelay(10);
1187 } while (((nes_read_indexed(nesdev,
1188 NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8)) & (15<<8)) != (15<<8)));
1189
1190 /* dump the QP status value */
1191 nes_debug(NES_DBG_INIT, "QP Status = 0x%08X\n", nes_read_indexed(nesdev,
1192 NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8)));
1193
1194 nesdev->cqp.sq_tail++;
1195
1196 return 0;
1197 }
1198
1199
1200 /**
1201 * nes_destroy_cqp
1202 */
1203 int nes_destroy_cqp(struct nes_device *nesdev)
1204 {
1205 struct nes_hw_cqp_wqe *cqp_wqe;
1206 u32 count = 0;
1207 u32 cqp_head;
1208 unsigned long flags;
1209
1210 do {
1211 if (count++ > 1000)
1212 break;
1213 udelay(10);
1214 } while (!(nesdev->cqp.sq_head == nesdev->cqp.sq_tail));
1215
1216 /* Reset CCQ */
1217 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_RESET |
1218 nesdev->ccq.cq_number);
1219
1220 /* Disable device interrupts */
1221 nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
1222
1223 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1224
1225 /* Destroy the AEQ */
1226 cqp_head = nesdev->cqp.sq_head++;
1227 nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
1228 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1229 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_AEQ |
1230 ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 8));
1231 cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = 0;
1232
1233 /* Destroy the NIC CEQ */
1234 cqp_head = nesdev->cqp.sq_head++;
1235 nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
1236 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1237 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_CEQ |
1238 ((u32)nesdev->nic_ceq_index << 8));
1239
1240 /* Destroy the CEQ */
1241 cqp_head = nesdev->cqp.sq_head++;
1242 nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
1243 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1244 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_CEQ |
1245 (nesdev->ceq_index << 8));
1246
1247 /* Destroy the CCQ */
1248 cqp_head = nesdev->cqp.sq_head++;
1249 nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
1250 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1251 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_CQ);
1252 cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(nesdev->ccq.cq_number |
1253 ((u32)nesdev->ceq_index << 16));
1254
1255 /* Destroy CQP */
1256 cqp_head = nesdev->cqp.sq_head++;
1257 nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
1258 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1259 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_QP |
1260 NES_CQP_QP_TYPE_CQP);
1261 cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(nesdev->cqp.qp_id);
1262
1263 barrier();
1264 /* Ring doorbell (5 WQEs) */
1265 nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x05800000 | nesdev->cqp.qp_id);
1266
1267 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1268
1269 /* wait for the CCQ, CEQ, and AEQ to get destroyed */
1270 count = 0;
1271 do {
1272 if (count++ > 1000) {
1273 printk(KERN_ERR PFX "Function%d: Error destroying CCQ, CEQ, and AEQ\n",
1274 PCI_FUNC(nesdev->pcidev->devfn));
1275 break;
1276 }
1277 udelay(10);
1278 } while (((nes_read_indexed(nesdev,
1279 NES_IDX_QP_CONTROL + (PCI_FUNC(nesdev->pcidev->devfn)*8)) & (15 << 8)) != 0));
1280
1281 /* dump the QP status value */
1282 nes_debug(NES_DBG_SHUTDOWN, "Function%d: QP Status = 0x%08X\n",
1283 PCI_FUNC(nesdev->pcidev->devfn),
1284 nes_read_indexed(nesdev,
1285 NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8)));
1286
1287 kfree(nesdev->nes_cqp_requests);
1288
1289 /* Free the control structures */
1290 pci_free_consistent(nesdev->pcidev, nesdev->cqp_mem_size, nesdev->cqp.sq_vbase,
1291 nesdev->cqp.sq_pbase);
1292
1293 return 0;
1294 }
1295
1296
1297 /**
1298 * nes_init_1g_phy
1299 */
1300 static int nes_init_1g_phy(struct nes_device *nesdev, u8 phy_type, u8 phy_index)
1301 {
1302 u32 counter = 0;
1303 u16 phy_data;
1304 int ret = 0;
1305
1306 nes_read_1G_phy_reg(nesdev, 1, phy_index, &phy_data);
1307 nes_write_1G_phy_reg(nesdev, 23, phy_index, 0xb000);
1308
1309 /* Reset the PHY */
1310 nes_write_1G_phy_reg(nesdev, 0, phy_index, 0x8000);
1311 udelay(100);
1312 counter = 0;
1313 do {
1314 nes_read_1G_phy_reg(nesdev, 0, phy_index, &phy_data);
1315 if (counter++ > 100) {
1316 ret = -1;
1317 break;
1318 }
1319 } while (phy_data & 0x8000);
1320
1321 /* Setting no phy loopback */
1322 phy_data &= 0xbfff;
1323 phy_data |= 0x1140;
1324 nes_write_1G_phy_reg(nesdev, 0, phy_index, phy_data);
1325 nes_read_1G_phy_reg(nesdev, 0, phy_index, &phy_data);
1326 nes_read_1G_phy_reg(nesdev, 0x17, phy_index, &phy_data);
1327 nes_read_1G_phy_reg(nesdev, 0x1e, phy_index, &phy_data);
1328
1329 /* Setting the interrupt mask */
1330 nes_read_1G_phy_reg(nesdev, 0x19, phy_index, &phy_data);
1331 nes_write_1G_phy_reg(nesdev, 0x19, phy_index, 0xffee);
1332 nes_read_1G_phy_reg(nesdev, 0x19, phy_index, &phy_data);
1333
1334 /* turning on flow control */
1335 nes_read_1G_phy_reg(nesdev, 4, phy_index, &phy_data);
1336 nes_write_1G_phy_reg(nesdev, 4, phy_index, (phy_data & ~(0x03E0)) | 0xc00);
1337 nes_read_1G_phy_reg(nesdev, 4, phy_index, &phy_data);
1338
1339 /* Clear Half duplex */
1340 nes_read_1G_phy_reg(nesdev, 9, phy_index, &phy_data);
1341 nes_write_1G_phy_reg(nesdev, 9, phy_index, phy_data & ~(0x0100));
1342 nes_read_1G_phy_reg(nesdev, 9, phy_index, &phy_data);
1343
1344 nes_read_1G_phy_reg(nesdev, 0, phy_index, &phy_data);
1345 nes_write_1G_phy_reg(nesdev, 0, phy_index, phy_data | 0x0300);
1346
1347 return ret;
1348 }
1349
1350
1351 /**
1352 * nes_init_2025_phy
1353 */
1354 static int nes_init_2025_phy(struct nes_device *nesdev, u8 phy_type, u8 phy_index)
1355 {
1356 u32 temp_phy_data = 0;
1357 u32 temp_phy_data2 = 0;
1358 u32 counter = 0;
1359 u32 sds;
1360 u32 mac_index = nesdev->mac_index;
1361 int ret = 0;
1362 unsigned int first_attempt = 1;
1363
1364 /* Check firmware heartbeat */
1365 nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
1366 temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
1367 udelay(1500);
1368 nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
1369 temp_phy_data2 = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
1370
1371 if (temp_phy_data != temp_phy_data2) {
1372 nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7fd);
1373 temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
1374 if ((temp_phy_data & 0xff) > 0x20)
1375 return 0;
1376 printk(PFX "Reinitialize external PHY\n");
1377 }
1378
1379 /* no heartbeat, configure the PHY */
1380 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0x0000, 0x8000);
1381 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc300, 0x0000);
1382 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc316, 0x000A);
1383 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc318, 0x0052);
1384
1385 switch (phy_type) {
1386 case NES_PHY_TYPE_ARGUS:
1387 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc316, 0x000A);
1388 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc318, 0x0052);
1389 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc302, 0x000C);
1390 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc319, 0x0008);
1391 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0027, 0x0001);
1392 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc31a, 0x0098);
1393 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0026, 0x0E00);
1394
1395 /* setup LEDs */
1396 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd006, 0x0007);
1397 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd007, 0x000A);
1398 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd008, 0x0009);
1399 break;
1400
1401 case NES_PHY_TYPE_SFP_D:
1402 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc316, 0x000A);
1403 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc318, 0x0052);
1404 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc302, 0x0004);
1405 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc319, 0x0038);
1406 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0027, 0x0013);
1407 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc31a, 0x0098);
1408 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0026, 0x0E00);
1409
1410 /* setup LEDs */
1411 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd006, 0x0007);
1412 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd007, 0x000A);
1413 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd008, 0x0009);
1414 break;
1415
1416 case NES_PHY_TYPE_KR:
1417 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc316, 0x000A);
1418 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc318, 0x0052);
1419 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc302, 0x000C);
1420 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc319, 0x0010);
1421 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0027, 0x0013);
1422 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc31a, 0x0080);
1423 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0026, 0x0E00);
1424
1425 /* setup LEDs */
1426 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd006, 0x000B);
1427 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd007, 0x0003);
1428 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd008, 0x0004);
1429
1430 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0022, 0x406D);
1431 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0023, 0x0020);
1432 break;
1433 }
1434
1435 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0028, 0xA528);
1436
1437 /* Bring PHY out of reset */
1438 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc300, 0x0002);
1439
1440 /* Check for heartbeat */
1441 counter = 0;
1442 mdelay(690);
1443 nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
1444 temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
1445 do {
1446 if (counter++ > 150) {
1447 printk(PFX "No PHY heartbeat\n");
1448 break;
1449 }
1450 mdelay(1);
1451 nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
1452 temp_phy_data2 = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
1453 } while ((temp_phy_data2 == temp_phy_data));
1454
1455 /* wait for tracking */
1456 counter = 0;
1457 do {
1458 nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7fd);
1459 temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
1460 if (counter++ > 300) {
1461 if (((temp_phy_data & 0xff) == 0x0) && first_attempt) {
1462 first_attempt = 0;
1463 counter = 0;
1464 /* reset AMCC PHY and try again */
1465 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0xe854, 0x00c0);
1466 nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0xe854, 0x0040);
1467 continue;
1468 } else {
1469 ret = 1;
1470 break;
1471 }
1472 }
1473 mdelay(10);
1474 } while ((temp_phy_data & 0xff) < 0x30);
1475
1476 /* setup signal integrity */
1477 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd003, 0x0000);
1478 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xF00D, 0x00FE);
1479 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xF00E, 0x0032);
1480 if (phy_type == NES_PHY_TYPE_KR) {
1481 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xF00F, 0x000C);
1482 } else {
1483 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xF00F, 0x0002);
1484 nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc314, 0x0063);
1485 }
1486
1487 /* reset serdes */
1488 sds = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0 + mac_index * 0x200);
1489 sds |= 0x1;
1490 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0 + mac_index * 0x200, sds);
1491 sds &= 0xfffffffe;
1492 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0 + mac_index * 0x200, sds);
1493
1494 counter = 0;
1495 while (((nes_read32(nesdev->regs + NES_SOFTWARE_RESET) & 0x00000040) != 0x00000040)
1496 && (counter++ < 5000))
1497 ;
1498
1499 return ret;
1500 }
1501
1502
1503 /**
1504 * nes_init_phy
1505 */
1506 int nes_init_phy(struct nes_device *nesdev)
1507 {
1508 struct nes_adapter *nesadapter = nesdev->nesadapter;
1509 u32 mac_index = nesdev->mac_index;
1510 u32 tx_config = 0;
1511 unsigned long flags;
1512 u8 phy_type = nesadapter->phy_type[mac_index];
1513 u8 phy_index = nesadapter->phy_index[mac_index];
1514 int ret = 0;
1515
1516 tx_config = nes_read_indexed(nesdev, NES_IDX_MAC_TX_CONFIG);
1517 if (phy_type == NES_PHY_TYPE_1G) {
1518 /* setup 1G MDIO operation */
1519 tx_config &= 0xFFFFFFE3;
1520 tx_config |= 0x04;
1521 } else {
1522 /* setup 10G MDIO operation */
1523 tx_config &= 0xFFFFFFE3;
1524 tx_config |= 0x15;
1525 }
1526 nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONFIG, tx_config);
1527
1528 spin_lock_irqsave(&nesdev->nesadapter->phy_lock, flags);
1529
1530 switch (phy_type) {
1531 case NES_PHY_TYPE_1G:
1532 ret = nes_init_1g_phy(nesdev, phy_type, phy_index);
1533 break;
1534 case NES_PHY_TYPE_ARGUS:
1535 case NES_PHY_TYPE_SFP_D:
1536 case NES_PHY_TYPE_KR:
1537 ret = nes_init_2025_phy(nesdev, phy_type, phy_index);
1538 break;
1539 }
1540
1541 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
1542
1543 return ret;
1544 }
1545
1546
1547 /**
1548 * nes_replenish_nic_rq
1549 */
1550 static void nes_replenish_nic_rq(struct nes_vnic *nesvnic)
1551 {
1552 unsigned long flags;
1553 dma_addr_t bus_address;
1554 struct sk_buff *skb;
1555 struct nes_hw_nic_rq_wqe *nic_rqe;
1556 struct nes_hw_nic *nesnic;
1557 struct nes_device *nesdev;
1558 u32 rx_wqes_posted = 0;
1559
1560 nesnic = &nesvnic->nic;
1561 nesdev = nesvnic->nesdev;
1562 spin_lock_irqsave(&nesnic->rq_lock, flags);
1563 if (nesnic->replenishing_rq !=0) {
1564 if (((nesnic->rq_size-1) == atomic_read(&nesvnic->rx_skbs_needed)) &&
1565 (atomic_read(&nesvnic->rx_skb_timer_running) == 0)) {
1566 atomic_set(&nesvnic->rx_skb_timer_running, 1);
1567 spin_unlock_irqrestore(&nesnic->rq_lock, flags);
1568 nesvnic->rq_wqes_timer.expires = jiffies + (HZ/2); /* 1/2 second */
1569 add_timer(&nesvnic->rq_wqes_timer);
1570 } else
1571 spin_unlock_irqrestore(&nesnic->rq_lock, flags);
1572 return;
1573 }
1574 nesnic->replenishing_rq = 1;
1575 spin_unlock_irqrestore(&nesnic->rq_lock, flags);
1576 do {
1577 skb = dev_alloc_skb(nesvnic->max_frame_size);
1578 if (skb) {
1579 skb->dev = nesvnic->netdev;
1580
1581 bus_address = pci_map_single(nesdev->pcidev,
1582 skb->data, nesvnic->max_frame_size, PCI_DMA_FROMDEVICE);
1583
1584 nic_rqe = &nesnic->rq_vbase[nesvnic->nic.rq_head];
1585 nic_rqe->wqe_words[NES_NIC_RQ_WQE_LENGTH_1_0_IDX] =
1586 cpu_to_le32(nesvnic->max_frame_size);
1587 nic_rqe->wqe_words[NES_NIC_RQ_WQE_LENGTH_3_2_IDX] = 0;
1588 nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_LOW_IDX] =
1589 cpu_to_le32((u32)bus_address);
1590 nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_HIGH_IDX] =
1591 cpu_to_le32((u32)((u64)bus_address >> 32));
1592 nesnic->rx_skb[nesnic->rq_head] = skb;
1593 nesnic->rq_head++;
1594 nesnic->rq_head &= nesnic->rq_size - 1;
1595 atomic_dec(&nesvnic->rx_skbs_needed);
1596 barrier();
1597 if (++rx_wqes_posted == 255) {
1598 nes_write32(nesdev->regs+NES_WQE_ALLOC, (rx_wqes_posted << 24) | nesnic->qp_id);
1599 rx_wqes_posted = 0;
1600 }
1601 } else {
1602 spin_lock_irqsave(&nesnic->rq_lock, flags);
1603 if (((nesnic->rq_size-1) == atomic_read(&nesvnic->rx_skbs_needed)) &&
1604 (atomic_read(&nesvnic->rx_skb_timer_running) == 0)) {
1605 atomic_set(&nesvnic->rx_skb_timer_running, 1);
1606 spin_unlock_irqrestore(&nesnic->rq_lock, flags);
1607 nesvnic->rq_wqes_timer.expires = jiffies + (HZ/2); /* 1/2 second */
1608 add_timer(&nesvnic->rq_wqes_timer);
1609 } else
1610 spin_unlock_irqrestore(&nesnic->rq_lock, flags);
1611 break;
1612 }
1613 } while (atomic_read(&nesvnic->rx_skbs_needed));
1614 barrier();
1615 if (rx_wqes_posted)
1616 nes_write32(nesdev->regs+NES_WQE_ALLOC, (rx_wqes_posted << 24) | nesnic->qp_id);
1617 nesnic->replenishing_rq = 0;
1618 }
1619
1620
1621 /**
1622 * nes_rq_wqes_timeout
1623 */
1624 static void nes_rq_wqes_timeout(unsigned long parm)
1625 {
1626 struct nes_vnic *nesvnic = (struct nes_vnic *)parm;
1627 printk("%s: Timer fired.\n", __func__);
1628 atomic_set(&nesvnic->rx_skb_timer_running, 0);
1629 if (atomic_read(&nesvnic->rx_skbs_needed))
1630 nes_replenish_nic_rq(nesvnic);
1631 }
1632
1633
1634 static int nes_lro_get_skb_hdr(struct sk_buff *skb, void **iphdr,
1635 void **tcph, u64 *hdr_flags, void *priv)
1636 {
1637 unsigned int ip_len;
1638 struct iphdr *iph;
1639 skb_reset_network_header(skb);
1640 iph = ip_hdr(skb);
1641 if (iph->protocol != IPPROTO_TCP)
1642 return -1;
1643 ip_len = ip_hdrlen(skb);
1644 skb_set_transport_header(skb, ip_len);
1645 *tcph = tcp_hdr(skb);
1646
1647 *hdr_flags = LRO_IPV4 | LRO_TCP;
1648 *iphdr = iph;
1649 return 0;
1650 }
1651
1652
1653 /**
1654 * nes_init_nic_qp
1655 */
1656 int nes_init_nic_qp(struct nes_device *nesdev, struct net_device *netdev)
1657 {
1658 struct nes_hw_cqp_wqe *cqp_wqe;
1659 struct nes_hw_nic_sq_wqe *nic_sqe;
1660 struct nes_hw_nic_qp_context *nic_context;
1661 struct sk_buff *skb;
1662 struct nes_hw_nic_rq_wqe *nic_rqe;
1663 struct nes_vnic *nesvnic = netdev_priv(netdev);
1664 unsigned long flags;
1665 void *vmem;
1666 dma_addr_t pmem;
1667 u64 u64temp;
1668 int ret;
1669 u32 cqp_head;
1670 u32 counter;
1671 u32 wqe_count;
1672 u8 jumbomode=0;
1673
1674 /* Allocate fragment, SQ, RQ, and CQ; Reuse CEQ based on the PCI function */
1675 nesvnic->nic_mem_size = 256 +
1676 (NES_NIC_WQ_SIZE * sizeof(struct nes_first_frag)) +
1677 (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_sq_wqe)) +
1678 (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_rq_wqe)) +
1679 (NES_NIC_WQ_SIZE * 2 * sizeof(struct nes_hw_nic_cqe)) +
1680 sizeof(struct nes_hw_nic_qp_context);
1681
1682 nesvnic->nic_vbase = pci_alloc_consistent(nesdev->pcidev, nesvnic->nic_mem_size,
1683 &nesvnic->nic_pbase);
1684 if (!nesvnic->nic_vbase) {
1685 nes_debug(NES_DBG_INIT, "Unable to allocate memory for NIC host descriptor rings\n");
1686 return -ENOMEM;
1687 }
1688 memset(nesvnic->nic_vbase, 0, nesvnic->nic_mem_size);
1689 nes_debug(NES_DBG_INIT, "Allocated NIC QP structures at %p (phys = %016lX), size = %u.\n",
1690 nesvnic->nic_vbase, (unsigned long)nesvnic->nic_pbase, nesvnic->nic_mem_size);
1691
1692 vmem = (void *)(((unsigned long)nesvnic->nic_vbase + (256 - 1)) &
1693 ~(unsigned long)(256 - 1));
1694 pmem = (dma_addr_t)(((unsigned long long)nesvnic->nic_pbase + (256 - 1)) &
1695 ~(unsigned long long)(256 - 1));
1696
1697 /* Setup the first Fragment buffers */
1698 nesvnic->nic.first_frag_vbase = vmem;
1699
1700 for (counter = 0; counter < NES_NIC_WQ_SIZE; counter++) {
1701 nesvnic->nic.frag_paddr[counter] = pmem;
1702 pmem += sizeof(struct nes_first_frag);
1703 }
1704
1705 /* setup the SQ */
1706 vmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_first_frag));
1707
1708 nesvnic->nic.sq_vbase = (void *)vmem;
1709 nesvnic->nic.sq_pbase = pmem;
1710 nesvnic->nic.sq_head = 0;
1711 nesvnic->nic.sq_tail = 0;
1712 nesvnic->nic.sq_size = NES_NIC_WQ_SIZE;
1713 for (counter = 0; counter < NES_NIC_WQ_SIZE; counter++) {
1714 nic_sqe = &nesvnic->nic.sq_vbase[counter];
1715 nic_sqe->wqe_words[NES_NIC_SQ_WQE_MISC_IDX] =
1716 cpu_to_le32(NES_NIC_SQ_WQE_DISABLE_CHKSUM |
1717 NES_NIC_SQ_WQE_COMPLETION);
1718 nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX] =
1719 cpu_to_le32((u32)NES_FIRST_FRAG_SIZE << 16);
1720 nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX] =
1721 cpu_to_le32((u32)nesvnic->nic.frag_paddr[counter]);
1722 nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_HIGH_IDX] =
1723 cpu_to_le32((u32)((u64)nesvnic->nic.frag_paddr[counter] >> 32));
1724 }
1725
1726 nesvnic->get_cqp_request = nes_get_cqp_request;
1727 nesvnic->post_cqp_request = nes_post_cqp_request;
1728 nesvnic->mcrq_mcast_filter = NULL;
1729
1730 spin_lock_init(&nesvnic->nic.rq_lock);
1731
1732 /* setup the RQ */
1733 vmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_sq_wqe));
1734 pmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_sq_wqe));
1735
1736
1737 nesvnic->nic.rq_vbase = vmem;
1738 nesvnic->nic.rq_pbase = pmem;
1739 nesvnic->nic.rq_head = 0;
1740 nesvnic->nic.rq_tail = 0;
1741 nesvnic->nic.rq_size = NES_NIC_WQ_SIZE;
1742
1743 /* setup the CQ */
1744 vmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_rq_wqe));
1745 pmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_rq_wqe));
1746
1747 if (nesdev->nesadapter->netdev_count > 2)
1748 nesvnic->mcrq_qp_id = nesvnic->nic_index + 32;
1749 else
1750 nesvnic->mcrq_qp_id = nesvnic->nic.qp_id + 4;
1751
1752 nesvnic->nic_cq.cq_vbase = vmem;
1753 nesvnic->nic_cq.cq_pbase = pmem;
1754 nesvnic->nic_cq.cq_head = 0;
1755 nesvnic->nic_cq.cq_size = NES_NIC_WQ_SIZE * 2;
1756
1757 nesvnic->nic_cq.ce_handler = nes_nic_napi_ce_handler;
1758
1759 /* Send CreateCQ request to CQP */
1760 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1761 cqp_head = nesdev->cqp.sq_head;
1762
1763 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1764 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1765
1766 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(
1767 NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1768 ((u32)nesvnic->nic_cq.cq_size << 16));
1769 cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(
1770 nesvnic->nic_cq.cq_number | ((u32)nesdev->nic_ceq_index << 16));
1771 u64temp = (u64)nesvnic->nic_cq.cq_pbase;
1772 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1773 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1774 u64temp = (unsigned long)&nesvnic->nic_cq;
1775 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] = cpu_to_le32((u32)(u64temp >> 1));
1776 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1777 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1778 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1779 if (++cqp_head >= nesdev->cqp.sq_size)
1780 cqp_head = 0;
1781 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1782 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1783
1784 /* Send CreateQP request to CQP */
1785 nic_context = (void *)(&nesvnic->nic_cq.cq_vbase[nesvnic->nic_cq.cq_size]);
1786 nic_context->context_words[NES_NIC_CTX_MISC_IDX] =
1787 cpu_to_le32((u32)NES_NIC_CTX_SIZE |
1788 ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 12));
1789 nes_debug(NES_DBG_INIT, "RX_WINDOW_BUFFER_PAGE_TABLE_SIZE = 0x%08X, RX_WINDOW_BUFFER_SIZE = 0x%08X\n",
1790 nes_read_indexed(nesdev, NES_IDX_RX_WINDOW_BUFFER_PAGE_TABLE_SIZE),
1791 nes_read_indexed(nesdev, NES_IDX_RX_WINDOW_BUFFER_SIZE));
1792 if (nes_read_indexed(nesdev, NES_IDX_RX_WINDOW_BUFFER_SIZE) != 0) {
1793 nic_context->context_words[NES_NIC_CTX_MISC_IDX] |= cpu_to_le32(NES_NIC_BACK_STORE);
1794 }
1795
1796 u64temp = (u64)nesvnic->nic.sq_pbase;
1797 nic_context->context_words[NES_NIC_CTX_SQ_LOW_IDX] = cpu_to_le32((u32)u64temp);
1798 nic_context->context_words[NES_NIC_CTX_SQ_HIGH_IDX] = cpu_to_le32((u32)(u64temp >> 32));
1799 u64temp = (u64)nesvnic->nic.rq_pbase;
1800 nic_context->context_words[NES_NIC_CTX_RQ_LOW_IDX] = cpu_to_le32((u32)u64temp);
1801 nic_context->context_words[NES_NIC_CTX_RQ_HIGH_IDX] = cpu_to_le32((u32)(u64temp >> 32));
1802
1803 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_CREATE_QP |
1804 NES_CQP_QP_TYPE_NIC);
1805 cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(nesvnic->nic.qp_id);
1806 u64temp = (u64)nesvnic->nic_cq.cq_pbase +
1807 (nesvnic->nic_cq.cq_size * sizeof(struct nes_hw_nic_cqe));
1808 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1809
1810 if (++cqp_head >= nesdev->cqp.sq_size)
1811 cqp_head = 0;
1812 nesdev->cqp.sq_head = cqp_head;
1813
1814 barrier();
1815
1816 /* Ring doorbell (2 WQEs) */
1817 nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x02800000 | nesdev->cqp.qp_id);
1818
1819 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1820 nes_debug(NES_DBG_INIT, "Waiting for create NIC QP%u to complete.\n",
1821 nesvnic->nic.qp_id);
1822
1823 ret = wait_event_timeout(nesdev->cqp.waitq, (nesdev->cqp.sq_tail == cqp_head),
1824 NES_EVENT_TIMEOUT);
1825 nes_debug(NES_DBG_INIT, "Create NIC QP%u completed, wait_event_timeout ret = %u.\n",
1826 nesvnic->nic.qp_id, ret);
1827 if (!ret) {
1828 nes_debug(NES_DBG_INIT, "NIC QP%u create timeout expired\n", nesvnic->nic.qp_id);
1829 pci_free_consistent(nesdev->pcidev, nesvnic->nic_mem_size, nesvnic->nic_vbase,
1830 nesvnic->nic_pbase);
1831 return -EIO;
1832 }
1833
1834 /* Populate the RQ */
1835 for (counter = 0; counter < (NES_NIC_WQ_SIZE - 1); counter++) {
1836 skb = dev_alloc_skb(nesvnic->max_frame_size);
1837 if (!skb) {
1838 nes_debug(NES_DBG_INIT, "%s: out of memory for receive skb\n", netdev->name);
1839
1840 nes_destroy_nic_qp(nesvnic);
1841 return -ENOMEM;
1842 }
1843
1844 skb->dev = netdev;
1845
1846 pmem = pci_map_single(nesdev->pcidev, skb->data,
1847 nesvnic->max_frame_size, PCI_DMA_FROMDEVICE);
1848
1849 nic_rqe = &nesvnic->nic.rq_vbase[counter];
1850 nic_rqe->wqe_words[NES_NIC_RQ_WQE_LENGTH_1_0_IDX] = cpu_to_le32(nesvnic->max_frame_size);
1851 nic_rqe->wqe_words[NES_NIC_RQ_WQE_LENGTH_3_2_IDX] = 0;
1852 nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_LOW_IDX] = cpu_to_le32((u32)pmem);
1853 nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_HIGH_IDX] = cpu_to_le32((u32)((u64)pmem >> 32));
1854 nesvnic->nic.rx_skb[counter] = skb;
1855 }
1856
1857 wqe_count = NES_NIC_WQ_SIZE - 1;
1858 nesvnic->nic.rq_head = wqe_count;
1859 barrier();
1860 do {
1861 counter = min(wqe_count, ((u32)255));
1862 wqe_count -= counter;
1863 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter << 24) | nesvnic->nic.qp_id);
1864 } while (wqe_count);
1865 init_timer(&nesvnic->rq_wqes_timer);
1866 nesvnic->rq_wqes_timer.function = nes_rq_wqes_timeout;
1867 nesvnic->rq_wqes_timer.data = (unsigned long)nesvnic;
1868 nes_debug(NES_DBG_INIT, "NAPI support Enabled\n");
1869 if (nesdev->nesadapter->et_use_adaptive_rx_coalesce)
1870 {
1871 nes_nic_init_timer(nesdev);
1872 if (netdev->mtu > 1500)
1873 jumbomode = 1;
1874 nes_nic_init_timer_defaults(nesdev, jumbomode);
1875 }
1876 nesvnic->lro_mgr.max_aggr = nes_lro_max_aggr;
1877 nesvnic->lro_mgr.max_desc = NES_MAX_LRO_DESCRIPTORS;
1878 nesvnic->lro_mgr.lro_arr = nesvnic->lro_desc;
1879 nesvnic->lro_mgr.get_skb_header = nes_lro_get_skb_hdr;
1880 nesvnic->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1881 nesvnic->lro_mgr.dev = netdev;
1882 nesvnic->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1883 nesvnic->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1884 return 0;
1885 }
1886
1887
1888 /**
1889 * nes_destroy_nic_qp
1890 */
1891 void nes_destroy_nic_qp(struct nes_vnic *nesvnic)
1892 {
1893 u64 u64temp;
1894 dma_addr_t bus_address;
1895 struct nes_device *nesdev = nesvnic->nesdev;
1896 struct nes_hw_cqp_wqe *cqp_wqe;
1897 struct nes_hw_nic_sq_wqe *nic_sqe;
1898 struct nes_hw_nic_rq_wqe *nic_rqe;
1899 __le16 *wqe_fragment_length;
1900 u16 wqe_fragment_index;
1901 u64 wqe_frag;
1902 u32 cqp_head;
1903 u32 wqm_cfg0;
1904 unsigned long flags;
1905 int ret;
1906
1907 /* clear wqe stall before destroying NIC QP */
1908 wqm_cfg0 = nes_read_indexed(nesdev, NES_IDX_WQM_CONFIG0);
1909 nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG0, wqm_cfg0 & 0xFFFF7FFF);
1910
1911 /* Free remaining NIC receive buffers */
1912 while (nesvnic->nic.rq_head != nesvnic->nic.rq_tail) {
1913 nic_rqe = &nesvnic->nic.rq_vbase[nesvnic->nic.rq_tail];
1914 wqe_frag = (u64)le32_to_cpu(
1915 nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_LOW_IDX]);
1916 wqe_frag |= ((u64)le32_to_cpu(
1917 nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_HIGH_IDX]))<<32;
1918 pci_unmap_single(nesdev->pcidev, (dma_addr_t)wqe_frag,
1919 nesvnic->max_frame_size, PCI_DMA_FROMDEVICE);
1920 dev_kfree_skb(nesvnic->nic.rx_skb[nesvnic->nic.rq_tail++]);
1921 nesvnic->nic.rq_tail &= (nesvnic->nic.rq_size - 1);
1922 }
1923
1924 /* Free remaining NIC transmit buffers */
1925 while (nesvnic->nic.sq_head != nesvnic->nic.sq_tail) {
1926 nic_sqe = &nesvnic->nic.sq_vbase[nesvnic->nic.sq_tail];
1927 wqe_fragment_index = 1;
1928 wqe_fragment_length = (__le16 *)
1929 &nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX];
1930 /* bump past the vlan tag */
1931 wqe_fragment_length++;
1932 if (le16_to_cpu(wqe_fragment_length[wqe_fragment_index]) != 0) {
1933 u64temp = (u64)le32_to_cpu(
1934 nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX+
1935 wqe_fragment_index*2]);
1936 u64temp += ((u64)le32_to_cpu(
1937 nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_HIGH_IDX
1938 + wqe_fragment_index*2]))<<32;
1939 bus_address = (dma_addr_t)u64temp;
1940 if (test_and_clear_bit(nesvnic->nic.sq_tail,
1941 nesvnic->nic.first_frag_overflow)) {
1942 pci_unmap_single(nesdev->pcidev,
1943 bus_address,
1944 le16_to_cpu(wqe_fragment_length[
1945 wqe_fragment_index++]),
1946 PCI_DMA_TODEVICE);
1947 }
1948 for (; wqe_fragment_index < 5; wqe_fragment_index++) {
1949 if (wqe_fragment_length[wqe_fragment_index]) {
1950 u64temp = le32_to_cpu(
1951 nic_sqe->wqe_words[
1952 NES_NIC_SQ_WQE_FRAG0_LOW_IDX+
1953 wqe_fragment_index*2]);
1954 u64temp += ((u64)le32_to_cpu(
1955 nic_sqe->wqe_words[
1956 NES_NIC_SQ_WQE_FRAG0_HIGH_IDX+
1957 wqe_fragment_index*2]))<<32;
1958 bus_address = (dma_addr_t)u64temp;
1959 pci_unmap_page(nesdev->pcidev,
1960 bus_address,
1961 le16_to_cpu(
1962 wqe_fragment_length[
1963 wqe_fragment_index]),
1964 PCI_DMA_TODEVICE);
1965 } else
1966 break;
1967 }
1968 }
1969 if (nesvnic->nic.tx_skb[nesvnic->nic.sq_tail])
1970 dev_kfree_skb(
1971 nesvnic->nic.tx_skb[nesvnic->nic.sq_tail]);
1972
1973 nesvnic->nic.sq_tail = (nesvnic->nic.sq_tail + 1)
1974 & (nesvnic->nic.sq_size - 1);
1975 }
1976
1977 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1978
1979 /* Destroy NIC QP */
1980 cqp_head = nesdev->cqp.sq_head;
1981 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1982 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1983
1984 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
1985 (NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_NIC));
1986 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1987 nesvnic->nic.qp_id);
1988
1989 if (++cqp_head >= nesdev->cqp.sq_size)
1990 cqp_head = 0;
1991
1992 cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
1993
1994 /* Destroy NIC CQ */
1995 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1996 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
1997 (NES_CQP_DESTROY_CQ | ((u32)nesvnic->nic_cq.cq_size << 16)));
1998 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1999 (nesvnic->nic_cq.cq_number | ((u32)nesdev->nic_ceq_index << 16)));
2000
2001 if (++cqp_head >= nesdev->cqp.sq_size)
2002 cqp_head = 0;
2003
2004 nesdev->cqp.sq_head = cqp_head;
2005 barrier();
2006
2007 /* Ring doorbell (2 WQEs) */
2008 nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x02800000 | nesdev->cqp.qp_id);
2009
2010 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2011 nes_debug(NES_DBG_SHUTDOWN, "Waiting for CQP, cqp_head=%u, cqp.sq_head=%u,"
2012 " cqp.sq_tail=%u, cqp.sq_size=%u\n",
2013 cqp_head, nesdev->cqp.sq_head,
2014 nesdev->cqp.sq_tail, nesdev->cqp.sq_size);
2015
2016 ret = wait_event_timeout(nesdev->cqp.waitq, (nesdev->cqp.sq_tail == cqp_head),
2017 NES_EVENT_TIMEOUT);
2018
2019 nes_debug(NES_DBG_SHUTDOWN, "Destroy NIC QP returned, wait_event_timeout ret = %u, cqp_head=%u,"
2020 " cqp.sq_head=%u, cqp.sq_tail=%u\n",
2021 ret, cqp_head, nesdev->cqp.sq_head, nesdev->cqp.sq_tail);
2022 if (!ret) {
2023 nes_debug(NES_DBG_SHUTDOWN, "NIC QP%u destroy timeout expired\n",
2024 nesvnic->nic.qp_id);
2025 }
2026
2027 pci_free_consistent(nesdev->pcidev, nesvnic->nic_mem_size, nesvnic->nic_vbase,
2028 nesvnic->nic_pbase);
2029
2030 /* restore old wqm_cfg0 value */
2031 nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG0, wqm_cfg0);
2032 }
2033
2034 /**
2035 * nes_napi_isr
2036 */
2037 int nes_napi_isr(struct nes_device *nesdev)
2038 {
2039 struct nes_adapter *nesadapter = nesdev->nesadapter;
2040 u32 int_stat;
2041
2042 if (nesdev->napi_isr_ran) {
2043 /* interrupt status has already been read in ISR */
2044 int_stat = nesdev->int_stat;
2045 } else {
2046 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
2047 nesdev->int_stat = int_stat;
2048 nesdev->napi_isr_ran = 1;
2049 }
2050
2051 int_stat &= nesdev->int_req;
2052 /* iff NIC, process here, else wait for DPC */
2053 if ((int_stat) && ((int_stat & 0x0000ff00) == int_stat)) {
2054 nesdev->napi_isr_ran = 0;
2055 nes_write32(nesdev->regs + NES_INT_STAT,
2056 (int_stat &
2057 ~(NES_INT_INTF | NES_INT_TIMER | NES_INT_MAC0 | NES_INT_MAC1 | NES_INT_MAC2 | NES_INT_MAC3)));
2058
2059 /* Process the CEQs */
2060 nes_process_ceq(nesdev, &nesdev->nesadapter->ceq[nesdev->nic_ceq_index]);
2061
2062 if (unlikely((((nesadapter->et_rx_coalesce_usecs_irq) &&
2063 (!nesadapter->et_use_adaptive_rx_coalesce)) ||
2064 ((nesadapter->et_use_adaptive_rx_coalesce) &&
2065 (nesdev->deepcq_count > nesadapter->et_pkt_rate_low))))) {
2066 if ((nesdev->int_req & NES_INT_TIMER) == 0) {
2067 /* Enable Periodic timer interrupts */
2068 nesdev->int_req |= NES_INT_TIMER;
2069 /* ack any pending periodic timer interrupts so we don't get an immediate interrupt */
2070 /* TODO: need to also ack other unused periodic timer values, get from nesadapter */
2071 nes_write32(nesdev->regs+NES_TIMER_STAT,
2072 nesdev->timer_int_req | ~(nesdev->nesadapter->timer_int_req));
2073 nes_write32(nesdev->regs+NES_INTF_INT_MASK,
2074 ~(nesdev->intf_int_req | NES_INTF_PERIODIC_TIMER));
2075 }
2076
2077 if (unlikely(nesadapter->et_use_adaptive_rx_coalesce))
2078 {
2079 nes_nic_init_timer(nesdev);
2080 }
2081 /* Enable interrupts, except CEQs */
2082 nes_write32(nesdev->regs+NES_INT_MASK, 0x0000ffff | (~nesdev->int_req));
2083 } else {
2084 /* Enable interrupts, make sure timer is off */
2085 nesdev->int_req &= ~NES_INT_TIMER;
2086 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
2087 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
2088 }
2089 nesdev->deepcq_count = 0;
2090 return 1;
2091 } else {
2092 return 0;
2093 }
2094 }
2095
2096 static void process_critical_error(struct nes_device *nesdev)
2097 {
2098 u32 debug_error;
2099 u32 nes_idx_debug_error_masks0 = 0;
2100 u16 error_module = 0;
2101
2102 debug_error = nes_read_indexed(nesdev, NES_IDX_DEBUG_ERROR_CONTROL_STATUS);
2103 printk(KERN_ERR PFX "Critical Error reported by device!!! 0x%02X\n",
2104 (u16)debug_error);
2105 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_CONTROL_STATUS,
2106 0x01010000 | (debug_error & 0x0000ffff));
2107 if (crit_err_count++ > 10)
2108 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 1 << 0x17);
2109 error_module = (u16) (debug_error & 0x1F00) >> 8;
2110 if (++nesdev->nesadapter->crit_error_count[error_module-1] >=
2111 nes_max_critical_error_count) {
2112 printk(KERN_ERR PFX "Masking off critical error for module "
2113 "0x%02X\n", (u16)error_module);
2114 nes_idx_debug_error_masks0 = nes_read_indexed(nesdev,
2115 NES_IDX_DEBUG_ERROR_MASKS0);
2116 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0,
2117 nes_idx_debug_error_masks0 | (1 << error_module));
2118 }
2119 }
2120 /**
2121 * nes_dpc
2122 */
2123 void nes_dpc(unsigned long param)
2124 {
2125 struct nes_device *nesdev = (struct nes_device *)param;
2126 struct nes_adapter *nesadapter = nesdev->nesadapter;
2127 u32 counter;
2128 u32 loop_counter = 0;
2129 u32 int_status_bit;
2130 u32 int_stat;
2131 u32 timer_stat;
2132 u32 temp_int_stat;
2133 u32 intf_int_stat;
2134 u32 processed_intf_int = 0;
2135 u16 processed_timer_int = 0;
2136 u16 completion_ints = 0;
2137 u16 timer_ints = 0;
2138
2139 /* nes_debug(NES_DBG_ISR, "\n"); */
2140
2141 do {
2142 timer_stat = 0;
2143 if (nesdev->napi_isr_ran) {
2144 nesdev->napi_isr_ran = 0;
2145 int_stat = nesdev->int_stat;
2146 } else
2147 int_stat = nes_read32(nesdev->regs+NES_INT_STAT);
2148 if (processed_intf_int != 0)
2149 int_stat &= nesdev->int_req & ~NES_INT_INTF;
2150 else
2151 int_stat &= nesdev->int_req;
2152 if (processed_timer_int == 0) {
2153 processed_timer_int = 1;
2154 if (int_stat & NES_INT_TIMER) {
2155 timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
2156 if ((timer_stat & nesdev->timer_int_req) == 0) {
2157 int_stat &= ~NES_INT_TIMER;
2158 }
2159 }
2160 } else {
2161 int_stat &= ~NES_INT_TIMER;
2162 }
2163
2164 if (int_stat) {
2165 if (int_stat & ~(NES_INT_INTF | NES_INT_TIMER | NES_INT_MAC0|
2166 NES_INT_MAC1|NES_INT_MAC2 | NES_INT_MAC3)) {
2167 /* Ack the interrupts */
2168 nes_write32(nesdev->regs+NES_INT_STAT,
2169 (int_stat & ~(NES_INT_INTF | NES_INT_TIMER | NES_INT_MAC0|
2170 NES_INT_MAC1 | NES_INT_MAC2 | NES_INT_MAC3)));
2171 }
2172
2173 temp_int_stat = int_stat;
2174 for (counter = 0, int_status_bit = 1; counter < 16; counter++) {
2175 if (int_stat & int_status_bit) {
2176 nes_process_ceq(nesdev, &nesadapter->ceq[counter]);
2177 temp_int_stat &= ~int_status_bit;
2178 completion_ints = 1;
2179 }
2180 if (!(temp_int_stat & 0x0000ffff))
2181 break;
2182 int_status_bit <<= 1;
2183 }
2184
2185 /* Process the AEQ for this pci function */
2186 int_status_bit = 1 << (16 + PCI_FUNC(nesdev->pcidev->devfn));
2187 if (int_stat & int_status_bit) {
2188 nes_process_aeq(nesdev, &nesadapter->aeq[PCI_FUNC(nesdev->pcidev->devfn)]);
2189 }
2190
2191 /* Process the MAC interrupt for this pci function */
2192 int_status_bit = 1 << (24 + nesdev->mac_index);
2193 if (int_stat & int_status_bit) {
2194 nes_process_mac_intr(nesdev, nesdev->mac_index);
2195 }
2196
2197 if (int_stat & NES_INT_TIMER) {
2198 if (timer_stat & nesdev->timer_int_req) {
2199 nes_write32(nesdev->regs + NES_TIMER_STAT,
2200 (timer_stat & nesdev->timer_int_req) |
2201 ~(nesdev->nesadapter->timer_int_req));
2202 timer_ints = 1;
2203 }
2204 }
2205
2206 if (int_stat & NES_INT_INTF) {
2207 processed_intf_int = 1;
2208 intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
2209 intf_int_stat &= nesdev->intf_int_req;
2210 if (NES_INTF_INT_CRITERR & intf_int_stat) {
2211 process_critical_error(nesdev);
2212 }
2213 if (NES_INTF_INT_PCIERR & intf_int_stat) {
2214 printk(KERN_ERR PFX "PCI Error reported by device!!!\n");
2215 BUG();
2216 }
2217 if (NES_INTF_INT_AEQ_OFLOW & intf_int_stat) {
2218 printk(KERN_ERR PFX "AEQ Overflow reported by device!!!\n");
2219 BUG();
2220 }
2221 nes_write32(nesdev->regs+NES_INTF_INT_STAT, intf_int_stat);
2222 }
2223
2224 if (int_stat & NES_INT_TSW) {
2225 }
2226 }
2227 /* Don't use the interface interrupt bit stay in loop */
2228 int_stat &= ~NES_INT_INTF | NES_INT_TIMER | NES_INT_MAC0 |
2229 NES_INT_MAC1 | NES_INT_MAC2 | NES_INT_MAC3;
2230 } while ((int_stat != 0) && (loop_counter++ < MAX_DPC_ITERATIONS));
2231
2232 if (timer_ints == 1) {
2233 if ((nesadapter->et_rx_coalesce_usecs_irq) || (nesadapter->et_use_adaptive_rx_coalesce)) {
2234 if (completion_ints == 0) {
2235 nesdev->timer_only_int_count++;
2236 if (nesdev->timer_only_int_count>=nesadapter->timer_int_limit) {
2237 nesdev->timer_only_int_count = 0;
2238 nesdev->int_req &= ~NES_INT_TIMER;
2239 nes_write32(nesdev->regs + NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
2240 nes_write32(nesdev->regs + NES_INT_MASK, ~nesdev->int_req);
2241 } else {
2242 nes_write32(nesdev->regs+NES_INT_MASK, 0x0000ffff | (~nesdev->int_req));
2243 }
2244 } else {
2245 if (unlikely(nesadapter->et_use_adaptive_rx_coalesce))
2246 {
2247 nes_nic_init_timer(nesdev);
2248 }
2249 nesdev->timer_only_int_count = 0;
2250 nes_write32(nesdev->regs+NES_INT_MASK, 0x0000ffff | (~nesdev->int_req));
2251 }
2252 } else {
2253 nesdev->timer_only_int_count = 0;
2254 nesdev->int_req &= ~NES_INT_TIMER;
2255 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
2256 nes_write32(nesdev->regs+NES_TIMER_STAT,
2257 nesdev->timer_int_req | ~(nesdev->nesadapter->timer_int_req));
2258 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
2259 }
2260 } else {
2261 if ( (completion_ints == 1) &&
2262 (((nesadapter->et_rx_coalesce_usecs_irq) &&
2263 (!nesadapter->et_use_adaptive_rx_coalesce)) ||
2264 ((nesdev->deepcq_count > nesadapter->et_pkt_rate_low) &&
2265 (nesadapter->et_use_adaptive_rx_coalesce) )) ) {
2266 /* nes_debug(NES_DBG_ISR, "Enabling periodic timer interrupt.\n" ); */
2267 nesdev->timer_only_int_count = 0;
2268 nesdev->int_req |= NES_INT_TIMER;
2269 nes_write32(nesdev->regs+NES_TIMER_STAT,
2270 nesdev->timer_int_req | ~(nesdev->nesadapter->timer_int_req));
2271 nes_write32(nesdev->regs+NES_INTF_INT_MASK,
2272 ~(nesdev->intf_int_req | NES_INTF_PERIODIC_TIMER));
2273 nes_write32(nesdev->regs+NES_INT_MASK, 0x0000ffff | (~nesdev->int_req));
2274 } else {
2275 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
2276 }
2277 }
2278 nesdev->deepcq_count = 0;
2279 }
2280
2281
2282 /**
2283 * nes_process_ceq
2284 */
2285 static void nes_process_ceq(struct nes_device *nesdev, struct nes_hw_ceq *ceq)
2286 {
2287 u64 u64temp;
2288 struct nes_hw_cq *cq;
2289 u32 head;
2290 u32 ceq_size;
2291
2292 /* nes_debug(NES_DBG_CQ, "\n"); */
2293 head = ceq->ceq_head;
2294 ceq_size = ceq->ceq_size;
2295
2296 do {
2297 if (le32_to_cpu(ceq->ceq_vbase[head].ceqe_words[NES_CEQE_CQ_CTX_HIGH_IDX]) &
2298 NES_CEQE_VALID) {
2299 u64temp = (((u64)(le32_to_cpu(ceq->ceq_vbase[head].ceqe_words[NES_CEQE_CQ_CTX_HIGH_IDX]))) << 32) |
2300 ((u64)(le32_to_cpu(ceq->ceq_vbase[head].ceqe_words[NES_CEQE_CQ_CTX_LOW_IDX])));
2301 u64temp <<= 1;
2302 cq = *((struct nes_hw_cq **)&u64temp);
2303 /* nes_debug(NES_DBG_CQ, "pCQ = %p\n", cq); */
2304 barrier();
2305 ceq->ceq_vbase[head].ceqe_words[NES_CEQE_CQ_CTX_HIGH_IDX] = 0;
2306
2307 /* call the event handler */
2308 cq->ce_handler(nesdev, cq);
2309
2310 if (++head >= ceq_size)
2311 head = 0;
2312 } else {
2313 break;
2314 }
2315
2316 } while (1);
2317
2318 ceq->ceq_head = head;
2319 }
2320
2321
2322 /**
2323 * nes_process_aeq
2324 */
2325 static void nes_process_aeq(struct nes_device *nesdev, struct nes_hw_aeq *aeq)
2326 {
2327 /* u64 u64temp; */
2328 u32 head;
2329 u32 aeq_size;
2330 u32 aeqe_misc;
2331 u32 aeqe_cq_id;
2332 struct nes_hw_aeqe volatile *aeqe;
2333
2334 head = aeq->aeq_head;
2335 aeq_size = aeq->aeq_size;
2336
2337 do {
2338 aeqe = &aeq->aeq_vbase[head];
2339 if ((le32_to_cpu(aeqe->aeqe_words[NES_AEQE_MISC_IDX]) & NES_AEQE_VALID) == 0)
2340 break;
2341 aeqe_misc = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_MISC_IDX]);
2342 aeqe_cq_id = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]);
2343 if (aeqe_misc & (NES_AEQE_QP|NES_AEQE_CQ)) {
2344 if (aeqe_cq_id >= NES_FIRST_QPN) {
2345 /* dealing with an accelerated QP related AE */
2346 /*
2347 * u64temp = (((u64)(le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_CTXT_HIGH_IDX]))) << 32) |
2348 * ((u64)(le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_CTXT_LOW_IDX])));
2349 */
2350 nes_process_iwarp_aeqe(nesdev, (struct nes_hw_aeqe *)aeqe);
2351 } else {
2352 /* TODO: dealing with a CQP related AE */
2353 nes_debug(NES_DBG_AEQ, "Processing CQP related AE, misc = 0x%04X\n",
2354 (u16)(aeqe_misc >> 16));
2355 }
2356 }
2357
2358 aeqe->aeqe_words[NES_AEQE_MISC_IDX] = 0;
2359
2360 if (++head >= aeq_size)
2361 head = 0;
2362
2363 nes_write32(nesdev->regs + NES_AEQ_ALLOC, 1 << 16);
2364 }
2365 while (1);
2366 aeq->aeq_head = head;
2367 }
2368
2369 static void nes_reset_link(struct nes_device *nesdev, u32 mac_index)
2370 {
2371 struct nes_adapter *nesadapter = nesdev->nesadapter;
2372 u32 reset_value;
2373 u32 i=0;
2374 u32 u32temp;
2375
2376 if (nesadapter->hw_rev == NE020_REV) {
2377 return;
2378 }
2379 mh_detected++;
2380
2381 reset_value = nes_read32(nesdev->regs+NES_SOFTWARE_RESET);
2382
2383 if ((mac_index == 0) || ((mac_index == 1) && (nesadapter->OneG_Mode)))
2384 reset_value |= 0x0000001d;
2385 else
2386 reset_value |= 0x0000002d;
2387
2388 if (4 <= (nesadapter->link_interrupt_count[mac_index] / ((u16)NES_MAX_LINK_INTERRUPTS))) {
2389 if ((!nesadapter->OneG_Mode) && (nesadapter->port_count == 2)) {
2390 nesadapter->link_interrupt_count[0] = 0;
2391 nesadapter->link_interrupt_count[1] = 0;
2392 u32temp = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1);
2393 if (0x00000040 & u32temp)
2394 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F088);
2395 else
2396 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F0C8);
2397
2398 reset_value |= 0x0000003d;
2399 }
2400 nesadapter->link_interrupt_count[mac_index] = 0;
2401 }
2402
2403 nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value);
2404
2405 while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET)
2406 & 0x00000040) != 0x00000040) && (i++ < 5000));
2407
2408 if (0x0000003d == (reset_value & 0x0000003d)) {
2409 u32 pcs_control_status0, pcs_control_status1;
2410
2411 for (i = 0; i < 10; i++) {
2412 pcs_control_status0 = nes_read_indexed(nesdev, NES_IDX_PHY_PCS_CONTROL_STATUS0);
2413 pcs_control_status1 = nes_read_indexed(nesdev, NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
2414 if (((0x0F000000 == (pcs_control_status0 & 0x0F000000))
2415 && (pcs_control_status0 & 0x00100000))
2416 || ((0x0F000000 == (pcs_control_status1 & 0x0F000000))
2417 && (pcs_control_status1 & 0x00100000)))
2418 continue;
2419 else
2420 break;
2421 }
2422 if (10 == i) {
2423 u32temp = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1);
2424 if (0x00000040 & u32temp)
2425 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F088);
2426 else
2427 nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F0C8);
2428
2429 nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value);
2430
2431 while (((nes_read32(nesdev->regs + NES_SOFTWARE_RESET)
2432 & 0x00000040) != 0x00000040) && (i++ < 5000));
2433 }
2434 }
2435 }
2436
2437 /**
2438 * nes_process_mac_intr
2439 */
2440 static void nes_process_mac_intr(struct nes_device *nesdev, u32 mac_number)
2441 {
2442 unsigned long flags;
2443 u32 pcs_control_status;
2444 struct nes_adapter *nesadapter = nesdev->nesadapter;
2445 struct nes_vnic *nesvnic;
2446 u32 mac_status;
2447 u32 mac_index = nesdev->mac_index;
2448 u32 u32temp;
2449 u16 phy_data;
2450 u16 temp_phy_data;
2451 u32 pcs_val = 0x0f0f0000;
2452 u32 pcs_mask = 0x0f1f0000;
2453 u32 cdr_ctrl;
2454
2455 spin_lock_irqsave(&nesadapter->phy_lock, flags);
2456 if (nesadapter->mac_sw_state[mac_number] != NES_MAC_SW_IDLE) {
2457 spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
2458 return;
2459 }
2460 nesadapter->mac_sw_state[mac_number] = NES_MAC_SW_INTERRUPT;
2461
2462 /* ack the MAC interrupt */
2463 mac_status = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (mac_index * 0x200));
2464 /* Clear the interrupt */
2465 nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (mac_index * 0x200), mac_status);
2466
2467 nes_debug(NES_DBG_PHY, "MAC%u interrupt status = 0x%X.\n", mac_number, mac_status);
2468
2469 if (mac_status & (NES_MAC_INT_LINK_STAT_CHG | NES_MAC_INT_XGMII_EXT)) {
2470 nesdev->link_status_interrupts++;
2471 if (0 == (++nesadapter->link_interrupt_count[mac_index] % ((u16)NES_MAX_LINK_INTERRUPTS)))
2472 nes_reset_link(nesdev, mac_index);
2473
2474 /* read the PHY interrupt status register */
2475 if ((nesadapter->OneG_Mode) &&
2476 (nesadapter->phy_type[mac_index] != NES_PHY_TYPE_PUMA_1G)) {
2477 do {
2478 nes_read_1G_phy_reg(nesdev, 0x1a,
2479 nesadapter->phy_index[mac_index], &phy_data);
2480 nes_debug(NES_DBG_PHY, "Phy%d data from register 0x1a = 0x%X.\n",
2481 nesadapter->phy_index[mac_index], phy_data);
2482 } while (phy_data&0x8000);
2483
2484 temp_phy_data = 0;
2485 do {
2486 nes_read_1G_phy_reg(nesdev, 0x11,
2487 nesadapter->phy_index[mac_index], &phy_data);
2488 nes_debug(NES_DBG_PHY, "Phy%d data from register 0x11 = 0x%X.\n",
2489 nesadapter->phy_index[mac_index], phy_data);
2490 if (temp_phy_data == phy_data)
2491 break;
2492 temp_phy_data = phy_data;
2493 } while (1);
2494
2495 nes_read_1G_phy_reg(nesdev, 0x1e,
2496 nesadapter->phy_index[mac_index], &phy_data);
2497 nes_debug(NES_DBG_PHY, "Phy%d data from register 0x1e = 0x%X.\n",
2498 nesadapter->phy_index[mac_index], phy_data);
2499
2500 nes_read_1G_phy_reg(nesdev, 1,
2501 nesadapter->phy_index[mac_index], &phy_data);
2502 nes_debug(NES_DBG_PHY, "1G phy%u data from register 1 = 0x%X\n",
2503 nesadapter->phy_index[mac_index], phy_data);
2504
2505 if (temp_phy_data & 0x1000) {
2506 nes_debug(NES_DBG_PHY, "The Link is up according to the PHY\n");
2507 phy_data = 4;
2508 } else {
2509 nes_debug(NES_DBG_PHY, "The Link is down according to the PHY\n");
2510 }
2511 }
2512 nes_debug(NES_DBG_PHY, "Eth SERDES Common Status: 0=0x%08X, 1=0x%08X\n",
2513 nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0),
2514 nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0+0x200));
2515
2516 if (nesadapter->phy_type[mac_index] == NES_PHY_TYPE_PUMA_1G) {
2517 switch (mac_index) {
2518 case 1:
2519 case 3:
2520 pcs_control_status = nes_read_indexed(nesdev,
2521 NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
2522 break;
2523 default:
2524 pcs_control_status = nes_read_indexed(nesdev,
2525 NES_IDX_PHY_PCS_CONTROL_STATUS0);
2526 break;
2527 }
2528 } else {
2529 pcs_control_status = nes_read_indexed(nesdev,
2530 NES_IDX_PHY_PCS_CONTROL_STATUS0 + ((mac_index & 1) * 0x200));
2531 pcs_control_status = nes_read_indexed(nesdev,
2532 NES_IDX_PHY_PCS_CONTROL_STATUS0 + ((mac_index & 1) * 0x200));
2533 }
2534
2535 nes_debug(NES_DBG_PHY, "PCS PHY Control/Status%u: 0x%08X\n",
2536 mac_index, pcs_control_status);
2537 if ((nesadapter->OneG_Mode) &&
2538 (nesadapter->phy_type[mac_index] != NES_PHY_TYPE_PUMA_1G)) {
2539 u32temp = 0x01010000;
2540 if (nesadapter->port_count > 2) {
2541 u32temp |= 0x02020000;
2542 }
2543 if ((pcs_control_status & u32temp)!= u32temp) {
2544 phy_data = 0;
2545 nes_debug(NES_DBG_PHY, "PCS says the link is down\n");
2546 }
2547 } else {
2548 switch (nesadapter->phy_type[mac_index]) {
2549 case NES_PHY_TYPE_ARGUS:
2550 case NES_PHY_TYPE_SFP_D:
2551 case NES_PHY_TYPE_KR:
2552 /* clear the alarms */
2553 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0x0008);
2554 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0xc001);
2555 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0xc002);
2556 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0xc005);
2557 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0xc006);
2558 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 1, 0x9003);
2559 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 1, 0x9004);
2560 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 1, 0x9005);
2561 /* check link status */
2562 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 1, 0x9003);
2563 temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
2564
2565 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 3, 0x0021);
2566 nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
2567 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 3, 0x0021);
2568 phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
2569
2570 phy_data = (!temp_phy_data && (phy_data == 0x8000)) ? 0x4 : 0x0;
2571
2572 nes_debug(NES_DBG_PHY, "%s: Phy data = 0x%04X, link was %s.\n",
2573 __func__, phy_data, nesadapter->mac_link_down[mac_index] ? "DOWN" : "UP");
2574 break;
2575
2576 case NES_PHY_TYPE_PUMA_1G:
2577 if (mac_index < 2)
2578 pcs_val = pcs_mask = 0x01010000;
2579 else
2580 pcs_val = pcs_mask = 0x02020000;
2581 /* fall through */
2582 default:
2583 phy_data = (pcs_val == (pcs_control_status & pcs_mask)) ? 0x4 : 0x0;
2584 break;
2585 }
2586 }
2587
2588 if (phy_data & 0x0004) {
2589 if (wide_ppm_offset &&
2590 (nesadapter->phy_type[mac_index] == NES_PHY_TYPE_CX4) &&
2591 (nesadapter->hw_rev != NE020_REV)) {
2592 cdr_ctrl = nes_read_indexed(nesdev,
2593 NES_IDX_ETH_SERDES_CDR_CONTROL0 +
2594 mac_index * 0x200);
2595 nes_write_indexed(nesdev,
2596 NES_IDX_ETH_SERDES_CDR_CONTROL0 +
2597 mac_index * 0x200,
2598 cdr_ctrl | 0x000F0000);
2599 }
2600 nesadapter->mac_link_down[mac_index] = 0;
2601 list_for_each_entry(nesvnic, &nesadapter->nesvnic_list[mac_index], list) {
2602 nes_debug(NES_DBG_PHY, "The Link is UP!!. linkup was %d\n",
2603 nesvnic->linkup);
2604 if (nesvnic->linkup == 0) {
2605 printk(PFX "The Link is now up for port %s, netdev %p.\n",
2606 nesvnic->netdev->name, nesvnic->netdev);
2607 if (netif_queue_stopped(nesvnic->netdev))
2608 netif_start_queue(nesvnic->netdev);
2609 nesvnic->linkup = 1;
2610 netif_carrier_on(nesvnic->netdev);
2611
2612 spin_lock(&nesvnic->port_ibevent_lock);
2613 if (nesvnic->of_device_registered) {
2614 if (nesdev->iw_status == 0) {
2615 nesdev->iw_status = 1;
2616 nes_port_ibevent(nesvnic);
2617 }
2618 }
2619 spin_unlock(&nesvnic->port_ibevent_lock);
2620 }
2621 }
2622 } else {
2623 if (wide_ppm_offset &&
2624 (nesadapter->phy_type[mac_index] == NES_PHY_TYPE_CX4) &&
2625 (nesadapter->hw_rev != NE020_REV)) {
2626 cdr_ctrl = nes_read_indexed(nesdev,
2627 NES_IDX_ETH_SERDES_CDR_CONTROL0 +
2628 mac_index * 0x200);
2629 nes_write_indexed(nesdev,
2630 NES_IDX_ETH_SERDES_CDR_CONTROL0 +
2631 mac_index * 0x200,
2632 cdr_ctrl & 0xFFF0FFFF);
2633 }
2634 nesadapter->mac_link_down[mac_index] = 1;
2635 list_for_each_entry(nesvnic, &nesadapter->nesvnic_list[mac_index], list) {
2636 nes_debug(NES_DBG_PHY, "The Link is Down!!. linkup was %d\n",
2637 nesvnic->linkup);
2638 if (nesvnic->linkup == 1) {
2639 printk(PFX "The Link is now down for port %s, netdev %p.\n",
2640 nesvnic->netdev->name, nesvnic->netdev);
2641 if (!(netif_queue_stopped(nesvnic->netdev)))
2642 netif_stop_queue(nesvnic->netdev);
2643 nesvnic->linkup = 0;
2644 netif_carrier_off(nesvnic->netdev);
2645
2646 spin_lock(&nesvnic->port_ibevent_lock);
2647 if (nesvnic->of_device_registered) {
2648 if (nesdev->iw_status == 1) {
2649 nesdev->iw_status = 0;
2650 nes_port_ibevent(nesvnic);
2651 }
2652 }
2653 spin_unlock(&nesvnic->port_ibevent_lock);
2654 }
2655 }
2656 }
2657 if (nesadapter->phy_type[mac_index] == NES_PHY_TYPE_SFP_D) {
2658 if (nesdev->link_recheck)
2659 cancel_delayed_work(&nesdev->work);
2660 nesdev->link_recheck = 1;
2661 schedule_delayed_work(&nesdev->work,
2662 NES_LINK_RECHECK_DELAY);
2663 }
2664 }
2665
2666 spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
2667
2668 nesadapter->mac_sw_state[mac_number] = NES_MAC_SW_IDLE;
2669 }
2670
2671 void nes_recheck_link_status(struct work_struct *work)
2672 {
2673 unsigned long flags;
2674 struct nes_device *nesdev = container_of(work, struct nes_device, work.work);
2675 struct nes_adapter *nesadapter = nesdev->nesadapter;
2676 struct nes_vnic *nesvnic;
2677 u32 mac_index = nesdev->mac_index;
2678 u16 phy_data;
2679 u16 temp_phy_data;
2680
2681 spin_lock_irqsave(&nesadapter->phy_lock, flags);
2682
2683 /* check link status */
2684 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 1, 0x9003);
2685 temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
2686
2687 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 3, 0x0021);
2688 nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
2689 nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 3, 0x0021);
2690 phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
2691
2692 phy_data = (!temp_phy_data && (phy_data == 0x8000)) ? 0x4 : 0x0;
2693
2694 nes_debug(NES_DBG_PHY, "%s: Phy data = 0x%04X, link was %s.\n",
2695 __func__, phy_data,
2696 nesadapter->mac_link_down[mac_index] ? "DOWN" : "UP");
2697
2698 if (phy_data & 0x0004) {
2699 nesadapter->mac_link_down[mac_index] = 0;
2700 list_for_each_entry(nesvnic, &nesadapter->nesvnic_list[mac_index], list) {
2701 if (nesvnic->linkup == 0) {
2702 printk(PFX "The Link is now up for port %s, netdev %p.\n",
2703 nesvnic->netdev->name, nesvnic->netdev);
2704 if (netif_queue_stopped(nesvnic->netdev))
2705 netif_start_queue(nesvnic->netdev);
2706 nesvnic->linkup = 1;
2707 netif_carrier_on(nesvnic->netdev);
2708
2709 spin_lock(&nesvnic->port_ibevent_lock);
2710 if (nesvnic->of_device_registered) {
2711 if (nesdev->iw_status == 0) {
2712 nesdev->iw_status = 1;
2713 nes_port_ibevent(nesvnic);
2714 }
2715 }
2716 spin_unlock(&nesvnic->port_ibevent_lock);
2717 }
2718 }
2719
2720 } else {
2721 nesadapter->mac_link_down[mac_index] = 1;
2722 list_for_each_entry(nesvnic, &nesadapter->nesvnic_list[mac_index], list) {
2723 if (nesvnic->linkup == 1) {
2724 printk(PFX "The Link is now down for port %s, netdev %p.\n",
2725 nesvnic->netdev->name, nesvnic->netdev);
2726 if (!(netif_queue_stopped(nesvnic->netdev)))
2727 netif_stop_queue(nesvnic->netdev);
2728 nesvnic->linkup = 0;
2729 netif_carrier_off(nesvnic->netdev);
2730
2731 spin_lock(&nesvnic->port_ibevent_lock);
2732 if (nesvnic->of_device_registered) {
2733 if (nesdev->iw_status == 1) {
2734 nesdev->iw_status = 0;
2735 nes_port_ibevent(nesvnic);
2736 }
2737 }
2738 spin_unlock(&nesvnic->port_ibevent_lock);
2739 }
2740 }
2741 }
2742 if (nesdev->link_recheck++ < NES_LINK_RECHECK_MAX)
2743 schedule_delayed_work(&nesdev->work, NES_LINK_RECHECK_DELAY);
2744 else
2745 nesdev->link_recheck = 0;
2746
2747 spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
2748 }
2749
2750
2751 static void nes_nic_napi_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *cq)
2752 {
2753 struct nes_vnic *nesvnic = container_of(cq, struct nes_vnic, nic_cq);
2754
2755 napi_schedule(&nesvnic->napi);
2756 }
2757
2758
2759 /* The MAX_RQES_TO_PROCESS defines how many max read requests to complete before
2760 * getting out of nic_ce_handler
2761 */
2762 #define MAX_RQES_TO_PROCESS 384
2763
2764 /**
2765 * nes_nic_ce_handler
2766 */
2767 void nes_nic_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *cq)
2768 {
2769 u64 u64temp;
2770 dma_addr_t bus_address;
2771 struct nes_hw_nic *nesnic;
2772 struct nes_vnic *nesvnic = container_of(cq, struct nes_vnic, nic_cq);
2773 struct nes_adapter *nesadapter = nesdev->nesadapter;
2774 struct nes_hw_nic_rq_wqe *nic_rqe;
2775 struct nes_hw_nic_sq_wqe *nic_sqe;
2776 struct sk_buff *skb;
2777 struct sk_buff *rx_skb;
2778 __le16 *wqe_fragment_length;
2779 u32 head;
2780 u32 cq_size;
2781 u32 rx_pkt_size;
2782 u32 cqe_count=0;
2783 u32 cqe_errv;
2784 u32 cqe_misc;
2785 u16 wqe_fragment_index = 1; /* first fragment (0) is used by copy buffer */
2786 u16 vlan_tag;
2787 u16 pkt_type;
2788 u16 rqes_processed = 0;
2789 u8 sq_cqes = 0;
2790 u8 nes_use_lro = 0;
2791
2792 head = cq->cq_head;
2793 cq_size = cq->cq_size;
2794 cq->cqes_pending = 1;
2795 if (nesvnic->netdev->features & NETIF_F_LRO)
2796 nes_use_lro = 1;
2797 do {
2798 if (le32_to_cpu(cq->cq_vbase[head].cqe_words[NES_NIC_CQE_MISC_IDX]) &
2799 NES_NIC_CQE_VALID) {
2800 nesnic = &nesvnic->nic;
2801 cqe_misc = le32_to_cpu(cq->cq_vbase[head].cqe_words[NES_NIC_CQE_MISC_IDX]);
2802 if (cqe_misc & NES_NIC_CQE_SQ) {
2803 sq_cqes++;
2804 wqe_fragment_index = 1;
2805 nic_sqe = &nesnic->sq_vbase[nesnic->sq_tail];
2806 skb = nesnic->tx_skb[nesnic->sq_tail];
2807 wqe_fragment_length = (__le16 *)&nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX];
2808 /* bump past the vlan tag */
2809 wqe_fragment_length++;
2810 if (le16_to_cpu(wqe_fragment_length[wqe_fragment_index]) != 0) {
2811 u64temp = (u64) le32_to_cpu(nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX +
2812 wqe_fragment_index * 2]);
2813 u64temp += ((u64)le32_to_cpu(nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_HIGH_IDX +
2814 wqe_fragment_index * 2])) << 32;
2815 bus_address = (dma_addr_t)u64temp;
2816 if (test_and_clear_bit(nesnic->sq_tail, nesnic->first_frag_overflow)) {
2817 pci_unmap_single(nesdev->pcidev,
2818 bus_address,
2819 le16_to_cpu(wqe_fragment_length[wqe_fragment_index++]),
2820 PCI_DMA_TODEVICE);
2821 }
2822 for (; wqe_fragment_index < 5; wqe_fragment_index++) {
2823 if (wqe_fragment_length[wqe_fragment_index]) {
2824 u64temp = le32_to_cpu(nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX +
2825 wqe_fragment_index * 2]);
2826 u64temp += ((u64)le32_to_cpu(nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_HIGH_IDX
2827 + wqe_fragment_index * 2])) <<32;
2828 bus_address = (dma_addr_t)u64temp;
2829 pci_unmap_page(nesdev->pcidev,
2830 bus_address,
2831 le16_to_cpu(wqe_fragment_length[wqe_fragment_index]),
2832 PCI_DMA_TODEVICE);
2833 } else
2834 break;
2835 }
2836 }
2837 if (skb)
2838 dev_kfree_skb_any(skb);
2839 nesnic->sq_tail++;
2840 nesnic->sq_tail &= nesnic->sq_size-1;
2841 if (sq_cqes > 128) {
2842 barrier();
2843 /* restart the queue if it had been stopped */
2844 if (netif_queue_stopped(nesvnic->netdev))
2845 netif_wake_queue(nesvnic->netdev);
2846 sq_cqes = 0;
2847 }
2848 } else {
2849 rqes_processed ++;
2850
2851 cq->rx_cqes_completed++;
2852 cq->rx_pkts_indicated++;
2853 rx_pkt_size = cqe_misc & 0x0000ffff;
2854 nic_rqe = &nesnic->rq_vbase[nesnic->rq_tail];
2855 /* Get the skb */
2856 rx_skb = nesnic->rx_skb[nesnic->rq_tail];
2857 nic_rqe = &nesnic->rq_vbase[nesvnic->nic.rq_tail];
2858 bus_address = (dma_addr_t)le32_to_cpu(nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_LOW_IDX]);
2859 bus_address += ((u64)le32_to_cpu(nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_HIGH_IDX])) << 32;
2860 pci_unmap_single(nesdev->pcidev, bus_address,
2861 nesvnic->max_frame_size, PCI_DMA_FROMDEVICE);
2862 /* rx_skb->tail = rx_skb->data + rx_pkt_size; */
2863 /* rx_skb->len = rx_pkt_size; */
2864 rx_skb->len = 0; /* TODO: see if this is necessary */
2865 skb_put(rx_skb, rx_pkt_size);
2866 rx_skb->protocol = eth_type_trans(rx_skb, nesvnic->netdev);
2867 nesnic->rq_tail++;
2868 nesnic->rq_tail &= nesnic->rq_size - 1;
2869
2870 atomic_inc(&nesvnic->rx_skbs_needed);
2871 if (atomic_read(&nesvnic->rx_skbs_needed) > (nesvnic->nic.rq_size>>1)) {
2872 nes_write32(nesdev->regs+NES_CQE_ALLOC,
2873 cq->cq_number | (cqe_count << 16));
2874 /* nesadapter->tune_timer.cq_count += cqe_count; */
2875 nesdev->currcq_count += cqe_count;
2876 cqe_count = 0;
2877 nes_replenish_nic_rq(nesvnic);
2878 }
2879 pkt_type = (u16)(le32_to_cpu(cq->cq_vbase[head].cqe_words[NES_NIC_CQE_TAG_PKT_TYPE_IDX]));
2880 cqe_errv = (cqe_misc & NES_NIC_CQE_ERRV_MASK) >> NES_NIC_CQE_ERRV_SHIFT;
2881 rx_skb->ip_summed = CHECKSUM_NONE;
2882
2883 if ((NES_PKT_TYPE_TCPV4_BITS == (pkt_type & NES_PKT_TYPE_TCPV4_MASK)) ||
2884 (NES_PKT_TYPE_UDPV4_BITS == (pkt_type & NES_PKT_TYPE_UDPV4_MASK))) {
2885 if ((cqe_errv &
2886 (NES_NIC_ERRV_BITS_IPV4_CSUM_ERR | NES_NIC_ERRV_BITS_TCPUDP_CSUM_ERR |
2887 NES_NIC_ERRV_BITS_IPH_ERR | NES_NIC_ERRV_BITS_WQE_OVERRUN)) == 0) {
2888 if (nesvnic->netdev->features & NETIF_F_RXCSUM)
2889 rx_skb->ip_summed = CHECKSUM_UNNECESSARY;
2890 } else
2891 nes_debug(NES_DBG_CQ, "%s: unsuccessfully checksummed TCP or UDP packet."
2892 " errv = 0x%X, pkt_type = 0x%X.\n",
2893 nesvnic->netdev->name, cqe_errv, pkt_type);
2894
2895 } else if ((pkt_type & NES_PKT_TYPE_IPV4_MASK) == NES_PKT_TYPE_IPV4_BITS) {
2896 if ((cqe_errv &
2897 (NES_NIC_ERRV_BITS_IPV4_CSUM_ERR | NES_NIC_ERRV_BITS_IPH_ERR |
2898 NES_NIC_ERRV_BITS_WQE_OVERRUN)) == 0) {
2899 if (nesvnic->netdev->features & NETIF_F_RXCSUM) {
2900 rx_skb->ip_summed = CHECKSUM_UNNECESSARY;
2901 /* nes_debug(NES_DBG_CQ, "%s: Reporting successfully checksummed IPv4 packet.\n",
2902 nesvnic->netdev->name); */
2903 }
2904 } else
2905 nes_debug(NES_DBG_CQ, "%s: unsuccessfully checksummed TCP or UDP packet."
2906 " errv = 0x%X, pkt_type = 0x%X.\n",
2907 nesvnic->netdev->name, cqe_errv, pkt_type);
2908 }
2909 /* nes_debug(NES_DBG_CQ, "pkt_type=%x, APBVT_MASK=%x\n",
2910 pkt_type, (pkt_type & NES_PKT_TYPE_APBVT_MASK)); */
2911
2912 if ((pkt_type & NES_PKT_TYPE_APBVT_MASK) == NES_PKT_TYPE_APBVT_BITS) {
2913 if (nes_cm_recv(rx_skb, nesvnic->netdev))
2914 rx_skb = NULL;
2915 }
2916 if (rx_skb == NULL)
2917 goto skip_rx_indicate0;
2918
2919
2920 if (cqe_misc & NES_NIC_CQE_TAG_VALID) {
2921 vlan_tag = (u16)(le32_to_cpu(
2922 cq->cq_vbase[head].cqe_words[NES_NIC_CQE_TAG_PKT_TYPE_IDX])
2923 >> 16);
2924 nes_debug(NES_DBG_CQ, "%s: Reporting stripped VLAN packet. Tag = 0x%04X\n",
2925 nesvnic->netdev->name, vlan_tag);
2926
2927 __vlan_hwaccel_put_tag(rx_skb, vlan_tag);
2928 }
2929 if (nes_use_lro)
2930 lro_receive_skb(&nesvnic->lro_mgr, rx_skb, NULL);
2931 else
2932 netif_receive_skb(rx_skb);
2933
2934 skip_rx_indicate0:
2935 ;
2936 /* nesvnic->netstats.rx_packets++; */
2937 /* nesvnic->netstats.rx_bytes += rx_pkt_size; */
2938 }
2939
2940 cq->cq_vbase[head].cqe_words[NES_NIC_CQE_MISC_IDX] = 0;
2941 /* Accounting... */
2942 cqe_count++;
2943 if (++head >= cq_size)
2944 head = 0;
2945 if (cqe_count == 255) {
2946 /* Replenish Nic CQ */
2947 nes_write32(nesdev->regs+NES_CQE_ALLOC,
2948 cq->cq_number | (cqe_count << 16));
2949 /* nesdev->nesadapter->tune_timer.cq_count += cqe_count; */
2950 nesdev->currcq_count += cqe_count;
2951 cqe_count = 0;
2952 }
2953
2954 if (cq->rx_cqes_completed >= nesvnic->budget)
2955 break;
2956 } else {
2957 cq->cqes_pending = 0;
2958 break;
2959 }
2960
2961 } while (1);
2962
2963 if (nes_use_lro)
2964 lro_flush_all(&nesvnic->lro_mgr);
2965 if (sq_cqes) {
2966 barrier();
2967 /* restart the queue if it had been stopped */
2968 if (netif_queue_stopped(nesvnic->netdev))
2969 netif_wake_queue(nesvnic->netdev);
2970 }
2971 cq->cq_head = head;
2972 /* nes_debug(NES_DBG_CQ, "CQ%u Processed = %u cqes, new head = %u.\n",
2973 cq->cq_number, cqe_count, cq->cq_head); */
2974 cq->cqe_allocs_pending = cqe_count;
2975 if (unlikely(nesadapter->et_use_adaptive_rx_coalesce))
2976 {
2977 /* nesdev->nesadapter->tune_timer.cq_count += cqe_count; */
2978 nesdev->currcq_count += cqe_count;
2979 nes_nic_tune_timer(nesdev);
2980 }
2981 if (atomic_read(&nesvnic->rx_skbs_needed))
2982 nes_replenish_nic_rq(nesvnic);
2983 }
2984
2985
2986 /**
2987 * nes_cqp_ce_handler
2988 */
2989 static void nes_cqp_ce_handler(struct nes_device *nesdev, struct nes_hw_cq *cq)
2990 {
2991 u64 u64temp;
2992 unsigned long flags;
2993 struct nes_hw_cqp *cqp = NULL;
2994 struct nes_cqp_request *cqp_request;
2995 struct nes_hw_cqp_wqe *cqp_wqe;
2996 u32 head;
2997 u32 cq_size;
2998 u32 cqe_count=0;
2999 u32 error_code;
3000 /* u32 counter; */
3001
3002 head = cq->cq_head;
3003 cq_size = cq->cq_size;
3004
3005 do {
3006 /* process the CQE */
3007 /* nes_debug(NES_DBG_CQP, "head=%u cqe_words=%08X\n", head,
3008 le32_to_cpu(cq->cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX])); */
3009
3010 if (le32_to_cpu(cq->cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
3011 u64temp = (((u64)(le32_to_cpu(cq->cq_vbase[head].
3012 cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]))) << 32) |
3013 ((u64)(le32_to_cpu(cq->cq_vbase[head].
3014 cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX])));
3015 cqp = *((struct nes_hw_cqp **)&u64temp);
3016
3017 error_code = le32_to_cpu(cq->cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX]);
3018 if (error_code) {
3019 nes_debug(NES_DBG_CQP, "Bad Completion code for opcode 0x%02X from CQP,"
3020 " Major/Minor codes = 0x%04X:%04X.\n",
3021 le32_to_cpu(cq->cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX])&0x3f,
3022 (u16)(error_code >> 16),
3023 (u16)error_code);
3024 nes_debug(NES_DBG_CQP, "cqp: qp_id=%u, sq_head=%u, sq_tail=%u\n",
3025 cqp->qp_id, cqp->sq_head, cqp->sq_tail);
3026 }
3027
3028 u64temp = (((u64)(le32_to_cpu(nesdev->cqp.sq_vbase[cqp->sq_tail].
3029 wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3030 ((u64)(le32_to_cpu(nesdev->cqp.sq_vbase[cqp->sq_tail].
3031 wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX])));
3032 cqp_request = *((struct nes_cqp_request **)&u64temp);
3033 if (cqp_request) {
3034 if (cqp_request->waiting) {
3035 /* nes_debug(NES_DBG_CQP, "%s: Waking up requestor\n"); */
3036 cqp_request->major_code = (u16)(error_code >> 16);
3037 cqp_request->minor_code = (u16)error_code;
3038 barrier();
3039 cqp_request->request_done = 1;
3040 wake_up(&cqp_request->waitq);
3041 nes_put_cqp_request(nesdev, cqp_request);
3042 } else {
3043 if (cqp_request->callback)
3044 cqp_request->cqp_callback(nesdev, cqp_request);
3045 nes_free_cqp_request(nesdev, cqp_request);
3046 }
3047 } else {
3048 wake_up(&nesdev->cqp.waitq);
3049 }
3050
3051 cq->cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3052 nes_write32(nesdev->regs + NES_CQE_ALLOC, cq->cq_number | (1 << 16));
3053 if (++cqp->sq_tail >= cqp->sq_size)
3054 cqp->sq_tail = 0;
3055
3056 /* Accounting... */
3057 cqe_count++;
3058 if (++head >= cq_size)
3059 head = 0;
3060 } else {
3061 break;
3062 }
3063 } while (1);
3064 cq->cq_head = head;
3065
3066 spin_lock_irqsave(&nesdev->cqp.lock, flags);
3067 while ((!list_empty(&nesdev->cqp_pending_reqs)) &&
3068 ((((nesdev->cqp.sq_tail+nesdev->cqp.sq_size)-nesdev->cqp.sq_head) &
3069 (nesdev->cqp.sq_size - 1)) != 1)) {
3070 cqp_request = list_entry(nesdev->cqp_pending_reqs.next,
3071 struct nes_cqp_request, list);
3072 list_del_init(&cqp_request->list);
3073 head = nesdev->cqp.sq_head++;
3074 nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
3075 cqp_wqe = &nesdev->cqp.sq_vbase[head];
3076 memcpy(cqp_wqe, &cqp_request->cqp_wqe, sizeof(*cqp_wqe));
3077 barrier();
3078 cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] =
3079 cpu_to_le32((u32)((unsigned long)cqp_request));
3080 cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] =
3081 cpu_to_le32((u32)(upper_32_bits((unsigned long)cqp_request)));
3082 nes_debug(NES_DBG_CQP, "CQP request %p (opcode 0x%02X) put on CQPs SQ wqe%u.\n",
3083 cqp_request, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX])&0x3f, head);
3084 /* Ring doorbell (1 WQEs) */
3085 barrier();
3086 nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x01800000 | nesdev->cqp.qp_id);
3087 }
3088 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
3089
3090 /* Arm the CCQ */
3091 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
3092 cq->cq_number);
3093 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3094 }
3095
3096
3097 static u8 *locate_mpa(u8 *pkt, u32 aeq_info)
3098 {
3099 if (aeq_info & NES_AEQE_Q2_DATA_ETHERNET) {
3100 /* skip over ethernet header */
3101 pkt += ETH_HLEN;
3102
3103 /* Skip over IP and TCP headers */
3104 pkt += 4 * (pkt[0] & 0x0f);
3105 pkt += 4 * ((pkt[12] >> 4) & 0x0f);
3106 }
3107 return pkt;
3108 }
3109
3110 /* Determine if incoming error pkt is rdma layer */
3111 static u32 iwarp_opcode(struct nes_qp *nesqp, u32 aeq_info)
3112 {
3113 u8 *pkt;
3114 u16 *mpa;
3115 u32 opcode = 0xffffffff;
3116
3117 if (aeq_info & NES_AEQE_Q2_DATA_WRITTEN) {
3118 pkt = nesqp->hwqp.q2_vbase + BAD_FRAME_OFFSET;
3119 mpa = (u16 *)locate_mpa(pkt, aeq_info);
3120 opcode = be16_to_cpu(mpa[1]) & 0xf;
3121 }
3122
3123 return opcode;
3124 }
3125
3126 /* Build iWARP terminate header */
3127 static int nes_bld_terminate_hdr(struct nes_qp *nesqp, u16 async_event_id, u32 aeq_info)
3128 {
3129 u8 *pkt = nesqp->hwqp.q2_vbase + BAD_FRAME_OFFSET;
3130 u16 ddp_seg_len;
3131 int copy_len = 0;
3132 u8 is_tagged = 0;
3133 u8 flush_code = 0;
3134 struct nes_terminate_hdr *termhdr;
3135
3136 termhdr = (struct nes_terminate_hdr *)nesqp->hwqp.q2_vbase;
3137 memset(termhdr, 0, 64);
3138
3139 if (aeq_info & NES_AEQE_Q2_DATA_WRITTEN) {
3140
3141 /* Use data from offending packet to fill in ddp & rdma hdrs */
3142 pkt = locate_mpa(pkt, aeq_info);
3143 ddp_seg_len = be16_to_cpu(*(u16 *)pkt);
3144 if (ddp_seg_len) {
3145 copy_len = 2;
3146 termhdr->hdrct = DDP_LEN_FLAG;
3147 if (pkt[2] & 0x80) {
3148 is_tagged = 1;
3149 if (ddp_seg_len >= TERM_DDP_LEN_TAGGED) {
3150 copy_len += TERM_DDP_LEN_TAGGED;
3151 termhdr->hdrct |= DDP_HDR_FLAG;
3152 }
3153 } else {
3154 if (ddp_seg_len >= TERM_DDP_LEN_UNTAGGED) {
3155 copy_len += TERM_DDP_LEN_UNTAGGED;
3156 termhdr->hdrct |= DDP_HDR_FLAG;
3157 }
3158
3159 if (ddp_seg_len >= (TERM_DDP_LEN_UNTAGGED + TERM_RDMA_LEN)) {
3160 if ((pkt[3] & RDMA_OPCODE_MASK) == RDMA_READ_REQ_OPCODE) {
3161 copy_len += TERM_RDMA_LEN;
3162 termhdr->hdrct |= RDMA_HDR_FLAG;
3163 }
3164 }
3165 }
3166 }
3167 }
3168
3169 switch (async_event_id) {
3170 case NES_AEQE_AEID_AMP_UNALLOCATED_STAG:
3171 switch (iwarp_opcode(nesqp, aeq_info)) {
3172 case IWARP_OPCODE_WRITE:
3173 flush_code = IB_WC_LOC_PROT_ERR;
3174 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_TAGGED_BUFFER;
3175 termhdr->error_code = DDP_TAGGED_INV_STAG;
3176 break;
3177 default:
3178 flush_code = IB_WC_REM_ACCESS_ERR;
3179 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_PROT;
3180 termhdr->error_code = RDMAP_INV_STAG;
3181 }
3182 break;
3183 case NES_AEQE_AEID_AMP_INVALID_STAG:
3184 flush_code = IB_WC_REM_ACCESS_ERR;
3185 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_PROT;
3186 termhdr->error_code = RDMAP_INV_STAG;
3187 break;
3188 case NES_AEQE_AEID_AMP_BAD_QP:
3189 flush_code = IB_WC_LOC_QP_OP_ERR;
3190 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_UNTAGGED_BUFFER;
3191 termhdr->error_code = DDP_UNTAGGED_INV_QN;
3192 break;
3193 case NES_AEQE_AEID_AMP_BAD_STAG_KEY:
3194 case NES_AEQE_AEID_AMP_BAD_STAG_INDEX:
3195 switch (iwarp_opcode(nesqp, aeq_info)) {
3196 case IWARP_OPCODE_SEND_INV:
3197 case IWARP_OPCODE_SEND_SE_INV:
3198 flush_code = IB_WC_REM_OP_ERR;
3199 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_OP;
3200 termhdr->error_code = RDMAP_CANT_INV_STAG;
3201 break;
3202 default:
3203 flush_code = IB_WC_REM_ACCESS_ERR;
3204 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_PROT;
3205 termhdr->error_code = RDMAP_INV_STAG;
3206 }
3207 break;
3208 case NES_AEQE_AEID_AMP_BOUNDS_VIOLATION:
3209 if (aeq_info & (NES_AEQE_Q2_DATA_ETHERNET | NES_AEQE_Q2_DATA_MPA)) {
3210 flush_code = IB_WC_LOC_PROT_ERR;
3211 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_TAGGED_BUFFER;
3212 termhdr->error_code = DDP_TAGGED_BOUNDS;
3213 } else {
3214 flush_code = IB_WC_REM_ACCESS_ERR;
3215 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_PROT;
3216 termhdr->error_code = RDMAP_INV_BOUNDS;
3217 }
3218 break;
3219 case NES_AEQE_AEID_AMP_RIGHTS_VIOLATION:
3220 case NES_AEQE_AEID_AMP_INVALIDATE_NO_REMOTE_ACCESS_RIGHTS:
3221 case NES_AEQE_AEID_PRIV_OPERATION_DENIED:
3222 flush_code = IB_WC_REM_ACCESS_ERR;
3223 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_PROT;
3224 termhdr->error_code = RDMAP_ACCESS;
3225 break;
3226 case NES_AEQE_AEID_AMP_TO_WRAP:
3227 flush_code = IB_WC_REM_ACCESS_ERR;
3228 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_PROT;
3229 termhdr->error_code = RDMAP_TO_WRAP;
3230 break;
3231 case NES_AEQE_AEID_AMP_BAD_PD:
3232 switch (iwarp_opcode(nesqp, aeq_info)) {
3233 case IWARP_OPCODE_WRITE:
3234 flush_code = IB_WC_LOC_PROT_ERR;
3235 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_TAGGED_BUFFER;
3236 termhdr->error_code = DDP_TAGGED_UNASSOC_STAG;
3237 break;
3238 case IWARP_OPCODE_SEND_INV:
3239 case IWARP_OPCODE_SEND_SE_INV:
3240 flush_code = IB_WC_REM_ACCESS_ERR;
3241 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_PROT;
3242 termhdr->error_code = RDMAP_CANT_INV_STAG;
3243 break;
3244 default:
3245 flush_code = IB_WC_REM_ACCESS_ERR;
3246 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_PROT;
3247 termhdr->error_code = RDMAP_UNASSOC_STAG;
3248 }
3249 break;
3250 case NES_AEQE_AEID_LLP_RECEIVED_MARKER_AND_LENGTH_FIELDS_DONT_MATCH:
3251 flush_code = IB_WC_LOC_LEN_ERR;
3252 termhdr->layer_etype = (LAYER_MPA << 4) | DDP_LLP;
3253 termhdr->error_code = MPA_MARKER;
3254 break;
3255 case NES_AEQE_AEID_LLP_RECEIVED_MPA_CRC_ERROR:
3256 flush_code = IB_WC_GENERAL_ERR;
3257 termhdr->layer_etype = (LAYER_MPA << 4) | DDP_LLP;
3258 termhdr->error_code = MPA_CRC;
3259 break;
3260 case NES_AEQE_AEID_LLP_SEGMENT_TOO_LARGE:
3261 case NES_AEQE_AEID_LLP_SEGMENT_TOO_SMALL:
3262 flush_code = IB_WC_LOC_LEN_ERR;
3263 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_CATASTROPHIC;
3264 termhdr->error_code = DDP_CATASTROPHIC_LOCAL;
3265 break;
3266 case NES_AEQE_AEID_DDP_LCE_LOCAL_CATASTROPHIC:
3267 case NES_AEQE_AEID_DDP_NO_L_BIT:
3268 flush_code = IB_WC_FATAL_ERR;
3269 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_CATASTROPHIC;
3270 termhdr->error_code = DDP_CATASTROPHIC_LOCAL;
3271 break;
3272 case NES_AEQE_AEID_DDP_INVALID_MSN_GAP_IN_MSN:
3273 case NES_AEQE_AEID_DDP_INVALID_MSN_RANGE_IS_NOT_VALID:
3274 flush_code = IB_WC_GENERAL_ERR;
3275 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_UNTAGGED_BUFFER;
3276 termhdr->error_code = DDP_UNTAGGED_INV_MSN_RANGE;
3277 break;
3278 case NES_AEQE_AEID_DDP_UBE_DDP_MESSAGE_TOO_LONG_FOR_AVAILABLE_BUFFER:
3279 flush_code = IB_WC_LOC_LEN_ERR;
3280 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_UNTAGGED_BUFFER;
3281 termhdr->error_code = DDP_UNTAGGED_INV_TOO_LONG;
3282 break;
3283 case NES_AEQE_AEID_DDP_UBE_INVALID_DDP_VERSION:
3284 flush_code = IB_WC_GENERAL_ERR;
3285 if (is_tagged) {
3286 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_TAGGED_BUFFER;
3287 termhdr->error_code = DDP_TAGGED_INV_DDP_VER;
3288 } else {
3289 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_UNTAGGED_BUFFER;
3290 termhdr->error_code = DDP_UNTAGGED_INV_DDP_VER;
3291 }
3292 break;
3293 case NES_AEQE_AEID_DDP_UBE_INVALID_MO:
3294 flush_code = IB_WC_GENERAL_ERR;
3295 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_UNTAGGED_BUFFER;
3296 termhdr->error_code = DDP_UNTAGGED_INV_MO;
3297 break;
3298 case NES_AEQE_AEID_DDP_UBE_INVALID_MSN_NO_BUFFER_AVAILABLE:
3299 flush_code = IB_WC_REM_OP_ERR;
3300 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_UNTAGGED_BUFFER;
3301 termhdr->error_code = DDP_UNTAGGED_INV_MSN_NO_BUF;
3302 break;
3303 case NES_AEQE_AEID_DDP_UBE_INVALID_QN:
3304 flush_code = IB_WC_GENERAL_ERR;
3305 termhdr->layer_etype = (LAYER_DDP << 4) | DDP_UNTAGGED_BUFFER;
3306 termhdr->error_code = DDP_UNTAGGED_INV_QN;
3307 break;
3308 case NES_AEQE_AEID_RDMAP_ROE_INVALID_RDMAP_VERSION:
3309 flush_code = IB_WC_GENERAL_ERR;
3310 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_OP;
3311 termhdr->error_code = RDMAP_INV_RDMAP_VER;
3312 break;
3313 case NES_AEQE_AEID_RDMAP_ROE_UNEXPECTED_OPCODE:
3314 flush_code = IB_WC_LOC_QP_OP_ERR;
3315 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_OP;
3316 termhdr->error_code = RDMAP_UNEXPECTED_OP;
3317 break;
3318 default:
3319 flush_code = IB_WC_FATAL_ERR;
3320 termhdr->layer_etype = (LAYER_RDMA << 4) | RDMAP_REMOTE_OP;
3321 termhdr->error_code = RDMAP_UNSPECIFIED;
3322 break;
3323 }
3324
3325 if (copy_len)
3326 memcpy(termhdr + 1, pkt, copy_len);
3327
3328 if ((flush_code) && ((NES_AEQE_INBOUND_RDMA & aeq_info) == 0)) {
3329 if (aeq_info & NES_AEQE_SQ)
3330 nesqp->term_sq_flush_code = flush_code;
3331 else
3332 nesqp->term_rq_flush_code = flush_code;
3333 }
3334
3335 return sizeof(struct nes_terminate_hdr) + copy_len;
3336 }
3337
3338 static void nes_terminate_connection(struct nes_device *nesdev, struct nes_qp *nesqp,
3339 struct nes_hw_aeqe *aeqe, enum ib_event_type eventtype)
3340 {
3341 u64 context;
3342 unsigned long flags;
3343 u32 aeq_info;
3344 u16 async_event_id;
3345 u8 tcp_state;
3346 u8 iwarp_state;
3347 u32 termlen = 0;
3348 u32 mod_qp_flags = NES_CQP_QP_IWARP_STATE_TERMINATE |
3349 NES_CQP_QP_TERM_DONT_SEND_FIN;
3350 struct nes_adapter *nesadapter = nesdev->nesadapter;
3351
3352 if (nesqp->term_flags & NES_TERM_SENT)
3353 return; /* Sanity check */
3354
3355 aeq_info = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_MISC_IDX]);
3356 tcp_state = (aeq_info & NES_AEQE_TCP_STATE_MASK) >> NES_AEQE_TCP_STATE_SHIFT;
3357 iwarp_state = (aeq_info & NES_AEQE_IWARP_STATE_MASK) >> NES_AEQE_IWARP_STATE_SHIFT;
3358 async_event_id = (u16)aeq_info;
3359
3360 context = (unsigned long)nesadapter->qp_table[le32_to_cpu(
3361 aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]) - NES_FIRST_QPN];
3362 if (!context) {
3363 WARN_ON(!context);
3364 return;
3365 }
3366
3367 nesqp = (struct nes_qp *)(unsigned long)context;
3368 spin_lock_irqsave(&nesqp->lock, flags);
3369 nesqp->hw_iwarp_state = iwarp_state;
3370 nesqp->hw_tcp_state = tcp_state;
3371 nesqp->last_aeq = async_event_id;
3372 nesqp->terminate_eventtype = eventtype;
3373 spin_unlock_irqrestore(&nesqp->lock, flags);
3374
3375 if (nesadapter->send_term_ok)
3376 termlen = nes_bld_terminate_hdr(nesqp, async_event_id, aeq_info);
3377 else
3378 mod_qp_flags |= NES_CQP_QP_TERM_DONT_SEND_TERM_MSG;
3379
3380 if (!nesdev->iw_status) {
3381 nesqp->term_flags = NES_TERM_DONE;
3382 nes_hw_modify_qp(nesdev, nesqp, NES_CQP_QP_IWARP_STATE_ERROR, 0, 0);
3383 nes_cm_disconn(nesqp);
3384 } else {
3385 nes_terminate_start_timer(nesqp);
3386 nesqp->term_flags |= NES_TERM_SENT;
3387 nes_hw_modify_qp(nesdev, nesqp, mod_qp_flags, termlen, 0);
3388 }
3389 }
3390
3391 static void nes_terminate_send_fin(struct nes_device *nesdev,
3392 struct nes_qp *nesqp, struct nes_hw_aeqe *aeqe)
3393 {
3394 u32 aeq_info;
3395 u16 async_event_id;
3396 u8 tcp_state;
3397 u8 iwarp_state;
3398 unsigned long flags;
3399
3400 aeq_info = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_MISC_IDX]);
3401 tcp_state = (aeq_info & NES_AEQE_TCP_STATE_MASK) >> NES_AEQE_TCP_STATE_SHIFT;
3402 iwarp_state = (aeq_info & NES_AEQE_IWARP_STATE_MASK) >> NES_AEQE_IWARP_STATE_SHIFT;
3403 async_event_id = (u16)aeq_info;
3404
3405 spin_lock_irqsave(&nesqp->lock, flags);
3406 nesqp->hw_iwarp_state = iwarp_state;
3407 nesqp->hw_tcp_state = tcp_state;
3408 nesqp->last_aeq = async_event_id;
3409 spin_unlock_irqrestore(&nesqp->lock, flags);
3410
3411 /* Send the fin only */
3412 nes_hw_modify_qp(nesdev, nesqp, NES_CQP_QP_IWARP_STATE_TERMINATE |
3413 NES_CQP_QP_TERM_DONT_SEND_TERM_MSG, 0, 0);
3414 }
3415
3416 /* Cleanup after a terminate sent or received */
3417 static void nes_terminate_done(struct nes_qp *nesqp, int timeout_occurred)
3418 {
3419 u32 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3420 unsigned long flags;
3421 struct nes_vnic *nesvnic = to_nesvnic(nesqp->ibqp.device);
3422 struct nes_device *nesdev = nesvnic->nesdev;
3423 u8 first_time = 0;
3424
3425 spin_lock_irqsave(&nesqp->lock, flags);
3426 if (nesqp->hte_added) {
3427 nesqp->hte_added = 0;
3428 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3429 }
3430
3431 first_time = (nesqp->term_flags & NES_TERM_DONE) == 0;
3432 nesqp->term_flags |= NES_TERM_DONE;
3433 spin_unlock_irqrestore(&nesqp->lock, flags);
3434
3435 /* Make sure we go through this only once */
3436 if (first_time) {
3437 if (timeout_occurred == 0)
3438 del_timer(&nesqp->terminate_timer);
3439 else
3440 next_iwarp_state |= NES_CQP_QP_RESET;
3441
3442 nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 0);
3443 nes_cm_disconn(nesqp);
3444 }
3445 }
3446
3447 static void nes_terminate_received(struct nes_device *nesdev,
3448 struct nes_qp *nesqp, struct nes_hw_aeqe *aeqe)
3449 {
3450 u32 aeq_info;
3451 u8 *pkt;
3452 u32 *mpa;
3453 u8 ddp_ctl;
3454 u8 rdma_ctl;
3455 u16 aeq_id = 0;
3456
3457 aeq_info = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_MISC_IDX]);
3458 if (aeq_info & NES_AEQE_Q2_DATA_WRITTEN) {
3459 /* Terminate is not a performance path so the silicon */
3460 /* did not validate the frame - do it now */
3461 pkt = nesqp->hwqp.q2_vbase + BAD_FRAME_OFFSET;
3462 mpa = (u32 *)locate_mpa(pkt, aeq_info);
3463 ddp_ctl = (be32_to_cpu(mpa[0]) >> 8) & 0xff;
3464 rdma_ctl = be32_to_cpu(mpa[0]) & 0xff;
3465 if ((ddp_ctl & 0xc0) != 0x40)
3466 aeq_id = NES_AEQE_AEID_DDP_LCE_LOCAL_CATASTROPHIC;
3467 else if ((ddp_ctl & 0x03) != 1)
3468 aeq_id = NES_AEQE_AEID_DDP_UBE_INVALID_DDP_VERSION;
3469 else if (be32_to_cpu(mpa[2]) != 2)
3470 aeq_id = NES_AEQE_AEID_DDP_UBE_INVALID_QN;
3471 else if (be32_to_cpu(mpa[3]) != 1)
3472 aeq_id = NES_AEQE_AEID_DDP_INVALID_MSN_GAP_IN_MSN;
3473 else if (be32_to_cpu(mpa[4]) != 0)
3474 aeq_id = NES_AEQE_AEID_DDP_UBE_INVALID_MO;
3475 else if ((rdma_ctl & 0xc0) != 0x40)
3476 aeq_id = NES_AEQE_AEID_RDMAP_ROE_INVALID_RDMAP_VERSION;
3477
3478 if (aeq_id) {
3479 /* Bad terminate recvd - send back a terminate */
3480 aeq_info = (aeq_info & 0xffff0000) | aeq_id;
3481 aeqe->aeqe_words[NES_AEQE_MISC_IDX] = cpu_to_le32(aeq_info);
3482 nes_terminate_connection(nesdev, nesqp, aeqe, IB_EVENT_QP_FATAL);
3483 return;
3484 }
3485 }
3486
3487 nesqp->term_flags |= NES_TERM_RCVD;
3488 nesqp->terminate_eventtype = IB_EVENT_QP_FATAL;
3489 nes_terminate_start_timer(nesqp);
3490 nes_terminate_send_fin(nesdev, nesqp, aeqe);
3491 }
3492
3493 /* Timeout routine in case terminate fails to complete */
3494 static void nes_terminate_timeout(unsigned long context)
3495 {
3496 struct nes_qp *nesqp = (struct nes_qp *)(unsigned long)context;
3497
3498 nes_terminate_done(nesqp, 1);
3499 }
3500
3501 /* Set a timer in case hw cannot complete the terminate sequence */
3502 static void nes_terminate_start_timer(struct nes_qp *nesqp)
3503 {
3504 init_timer(&nesqp->terminate_timer);
3505 nesqp->terminate_timer.function = nes_terminate_timeout;
3506 nesqp->terminate_timer.expires = jiffies + HZ;
3507 nesqp->terminate_timer.data = (unsigned long)nesqp;
3508 add_timer(&nesqp->terminate_timer);
3509 }
3510
3511 /**
3512 * nes_process_iwarp_aeqe
3513 */
3514 static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
3515 struct nes_hw_aeqe *aeqe)
3516 {
3517 u64 context;
3518 unsigned long flags;
3519 struct nes_qp *nesqp;
3520 struct nes_hw_cq *hw_cq;
3521 struct nes_cq *nescq;
3522 int resource_allocated;
3523 struct nes_adapter *nesadapter = nesdev->nesadapter;
3524 u32 aeq_info;
3525 u32 next_iwarp_state = 0;
3526 u32 aeqe_cq_id;
3527 u16 async_event_id;
3528 u8 tcp_state;
3529 u8 iwarp_state;
3530 struct ib_event ibevent;
3531
3532 nes_debug(NES_DBG_AEQ, "\n");
3533 aeq_info = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_MISC_IDX]);
3534 if ((NES_AEQE_INBOUND_RDMA & aeq_info) || (!(NES_AEQE_QP & aeq_info))) {
3535 context = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_CTXT_LOW_IDX]);
3536 context += ((u64)le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_CTXT_HIGH_IDX])) << 32;
3537 } else {
3538 context = (unsigned long)nesadapter->qp_table[le32_to_cpu(
3539 aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]) - NES_FIRST_QPN];
3540 BUG_ON(!context);
3541 }
3542
3543 /* context is nesqp unless async_event_id == CQ ERROR */
3544 nesqp = (struct nes_qp *)(unsigned long)context;
3545 async_event_id = (u16)aeq_info;
3546 tcp_state = (aeq_info & NES_AEQE_TCP_STATE_MASK) >> NES_AEQE_TCP_STATE_SHIFT;
3547 iwarp_state = (aeq_info & NES_AEQE_IWARP_STATE_MASK) >> NES_AEQE_IWARP_STATE_SHIFT;
3548 nes_debug(NES_DBG_AEQ, "aeid = 0x%04X, qp-cq id = %d, aeqe = %p,"
3549 " Tcp state = %s, iWARP state = %s\n",
3550 async_event_id,
3551 le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]), aeqe,
3552 nes_tcp_state_str[tcp_state], nes_iwarp_state_str[iwarp_state]);
3553
3554 aeqe_cq_id = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]);
3555 if (aeq_info & NES_AEQE_QP) {
3556 if ((!nes_is_resource_allocated(nesadapter, nesadapter->allocated_qps,
3557 aeqe_cq_id)) ||
3558 (atomic_read(&nesqp->close_timer_started)))
3559 return;
3560 }
3561
3562 switch (async_event_id) {
3563 case NES_AEQE_AEID_LLP_FIN_RECEIVED:
3564 if (nesqp->term_flags)
3565 return; /* Ignore it, wait for close complete */
3566
3567 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3568 if ((tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) &&
3569 (nesqp->ibqp_state == IB_QPS_RTS) &&
3570 ((nesadapter->eeprom_version >> 16) != NES_A0)) {
3571 spin_lock_irqsave(&nesqp->lock, flags);
3572 nesqp->hw_iwarp_state = iwarp_state;
3573 nesqp->hw_tcp_state = tcp_state;
3574 nesqp->last_aeq = async_event_id;
3575 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3576 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3577 spin_unlock_irqrestore(&nesqp->lock, flags);
3578 nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 0);
3579 nes_cm_disconn(nesqp);
3580 }
3581 nesqp->cm_id->add_ref(nesqp->cm_id);
3582 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *)nesqp,
3583 NES_TIMER_TYPE_CLOSE, 1, 0);
3584 nes_debug(NES_DBG_AEQ, "QP%u Not decrementing QP refcount (%d),"
3585 " need ae to finish up, original_last_aeq = 0x%04X."
3586 " last_aeq = 0x%04X, scheduling timer. TCP state = %d\n",
3587 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3588 async_event_id, nesqp->last_aeq, tcp_state);
3589 }
3590 break;
3591 case NES_AEQE_AEID_LLP_CLOSE_COMPLETE:
3592 if (nesqp->term_flags) {
3593 nes_terminate_done(nesqp, 0);
3594 return;
3595 }
3596 spin_lock_irqsave(&nesqp->lock, flags);
3597 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3598 spin_unlock_irqrestore(&nesqp->lock, flags);
3599 nes_hw_modify_qp(nesdev, nesqp, NES_CQP_QP_IWARP_STATE_CLOSING, 0, 0);
3600 nes_cm_disconn(nesqp);
3601 break;
3602
3603 case NES_AEQE_AEID_RESET_SENT:
3604 tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3605 spin_lock_irqsave(&nesqp->lock, flags);
3606 nesqp->hw_iwarp_state = iwarp_state;
3607 nesqp->hw_tcp_state = tcp_state;
3608 nesqp->last_aeq = async_event_id;
3609 nesqp->hte_added = 0;
3610 spin_unlock_irqrestore(&nesqp->lock, flags);
3611 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR | NES_CQP_QP_DEL_HTE;
3612 nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 0);
3613 nes_cm_disconn(nesqp);
3614 break;
3615
3616 case NES_AEQE_AEID_LLP_CONNECTION_RESET:
3617 if (atomic_read(&nesqp->close_timer_started))
3618 return;
3619 spin_lock_irqsave(&nesqp->lock, flags);
3620 nesqp->hw_iwarp_state = iwarp_state;
3621 nesqp->hw_tcp_state = tcp_state;
3622 nesqp->last_aeq = async_event_id;
3623 spin_unlock_irqrestore(&nesqp->lock, flags);
3624 nes_cm_disconn(nesqp);
3625 break;
3626
3627 case NES_AEQE_AEID_TERMINATE_SENT:
3628 nes_terminate_send_fin(nesdev, nesqp, aeqe);
3629 break;
3630
3631 case NES_AEQE_AEID_LLP_TERMINATE_RECEIVED:
3632 nes_terminate_received(nesdev, nesqp, aeqe);
3633 break;
3634
3635 case NES_AEQE_AEID_AMP_BAD_STAG_KEY:
3636 case NES_AEQE_AEID_AMP_BAD_STAG_INDEX:
3637 case NES_AEQE_AEID_AMP_UNALLOCATED_STAG:
3638 case NES_AEQE_AEID_AMP_INVALID_STAG:
3639 case NES_AEQE_AEID_AMP_RIGHTS_VIOLATION:
3640 case NES_AEQE_AEID_AMP_INVALIDATE_NO_REMOTE_ACCESS_RIGHTS:
3641 case NES_AEQE_AEID_PRIV_OPERATION_DENIED:
3642 case NES_AEQE_AEID_DDP_UBE_DDP_MESSAGE_TOO_LONG_FOR_AVAILABLE_BUFFER:
3643 case NES_AEQE_AEID_AMP_BOUNDS_VIOLATION:
3644 case NES_AEQE_AEID_AMP_TO_WRAP:
3645 printk(KERN_ERR PFX "QP[%u] async_event_id=0x%04X IB_EVENT_QP_ACCESS_ERR\n",
3646 nesqp->hwqp.qp_id, async_event_id);
3647 nes_terminate_connection(nesdev, nesqp, aeqe, IB_EVENT_QP_ACCESS_ERR);
3648 break;
3649
3650 case NES_AEQE_AEID_LLP_SEGMENT_TOO_LARGE:
3651 case NES_AEQE_AEID_LLP_SEGMENT_TOO_SMALL:
3652 case NES_AEQE_AEID_DDP_UBE_INVALID_MO:
3653 case NES_AEQE_AEID_DDP_UBE_INVALID_QN:
3654 if (iwarp_opcode(nesqp, aeq_info) > IWARP_OPCODE_TERM) {
3655 aeq_info &= 0xffff0000;
3656 aeq_info |= NES_AEQE_AEID_RDMAP_ROE_UNEXPECTED_OPCODE;
3657 aeqe->aeqe_words[NES_AEQE_MISC_IDX] = cpu_to_le32(aeq_info);
3658 }
3659
3660 case NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE:
3661 case NES_AEQE_AEID_LLP_TOO_MANY_RETRIES:
3662 case NES_AEQE_AEID_DDP_UBE_INVALID_MSN_NO_BUFFER_AVAILABLE:
3663 case NES_AEQE_AEID_LLP_RECEIVED_MPA_CRC_ERROR:
3664 case NES_AEQE_AEID_AMP_BAD_QP:
3665 case NES_AEQE_AEID_LLP_RECEIVED_MARKER_AND_LENGTH_FIELDS_DONT_MATCH:
3666 case NES_AEQE_AEID_DDP_LCE_LOCAL_CATASTROPHIC:
3667 case NES_AEQE_AEID_DDP_NO_L_BIT:
3668 case NES_AEQE_AEID_DDP_INVALID_MSN_GAP_IN_MSN:
3669 case NES_AEQE_AEID_DDP_INVALID_MSN_RANGE_IS_NOT_VALID:
3670 case NES_AEQE_AEID_DDP_UBE_INVALID_DDP_VERSION:
3671 case NES_AEQE_AEID_RDMAP_ROE_INVALID_RDMAP_VERSION:
3672 case NES_AEQE_AEID_RDMAP_ROE_UNEXPECTED_OPCODE:
3673 case NES_AEQE_AEID_AMP_BAD_PD:
3674 case NES_AEQE_AEID_AMP_FASTREG_SHARED:
3675 case NES_AEQE_AEID_AMP_FASTREG_VALID_STAG:
3676 case NES_AEQE_AEID_AMP_FASTREG_MW_STAG:
3677 case NES_AEQE_AEID_AMP_FASTREG_INVALID_RIGHTS:
3678 case NES_AEQE_AEID_AMP_FASTREG_PBL_TABLE_OVERFLOW:
3679 case NES_AEQE_AEID_AMP_FASTREG_INVALID_LENGTH:
3680 case NES_AEQE_AEID_AMP_INVALIDATE_SHARED:
3681 case NES_AEQE_AEID_AMP_INVALIDATE_MR_WITH_BOUND_WINDOWS:
3682 case NES_AEQE_AEID_AMP_MWBIND_VALID_STAG:
3683 case NES_AEQE_AEID_AMP_MWBIND_OF_MR_STAG:
3684 case NES_AEQE_AEID_AMP_MWBIND_TO_ZERO_BASED_STAG:
3685 case NES_AEQE_AEID_AMP_MWBIND_TO_MW_STAG:
3686 case NES_AEQE_AEID_AMP_MWBIND_INVALID_RIGHTS:
3687 case NES_AEQE_AEID_AMP_MWBIND_INVALID_BOUNDS:
3688 case NES_AEQE_AEID_AMP_MWBIND_TO_INVALID_PARENT:
3689 case NES_AEQE_AEID_AMP_MWBIND_BIND_DISABLED:
3690 case NES_AEQE_AEID_BAD_CLOSE:
3691 case NES_AEQE_AEID_RDMA_READ_WHILE_ORD_ZERO:
3692 case NES_AEQE_AEID_STAG_ZERO_INVALID:
3693 case NES_AEQE_AEID_ROE_INVALID_RDMA_READ_REQUEST:
3694 case NES_AEQE_AEID_ROE_INVALID_RDMA_WRITE_OR_READ_RESP:
3695 printk(KERN_ERR PFX "QP[%u] async_event_id=0x%04X IB_EVENT_QP_FATAL\n",
3696 nesqp->hwqp.qp_id, async_event_id);
3697 nes_terminate_connection(nesdev, nesqp, aeqe, IB_EVENT_QP_FATAL);
3698 break;
3699
3700 case NES_AEQE_AEID_CQ_OPERATION_ERROR:
3701 context <<= 1;
3702 nes_debug(NES_DBG_AEQ, "Processing an NES_AEQE_AEID_CQ_OPERATION_ERROR event on CQ%u, %p\n",
3703 le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]), (void *)(unsigned long)context);
3704 resource_allocated = nes_is_resource_allocated(nesadapter, nesadapter->allocated_cqs,
3705 le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]));
3706 if (resource_allocated) {
3707 printk(KERN_ERR PFX "%s: Processing an NES_AEQE_AEID_CQ_OPERATION_ERROR event on CQ%u\n",
3708 __func__, le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]));
3709 hw_cq = (struct nes_hw_cq *)(unsigned long)context;
3710 if (hw_cq) {
3711 nescq = container_of(hw_cq, struct nes_cq, hw_cq);
3712 if (nescq->ibcq.event_handler) {
3713 ibevent.device = nescq->ibcq.device;
3714 ibevent.event = IB_EVENT_CQ_ERR;
3715 ibevent.element.cq = &nescq->ibcq;
3716 nescq->ibcq.event_handler(&ibevent, nescq->ibcq.cq_context);
3717 }
3718 }
3719 }
3720 break;
3721
3722 default:
3723 nes_debug(NES_DBG_AEQ, "Processing an iWARP related AE for QP, misc = 0x%04X\n",
3724 async_event_id);
3725 break;
3726 }
3727
3728 }
3729
3730 /**
3731 * nes_iwarp_ce_handler
3732 */
3733 void nes_iwarp_ce_handler(struct nes_device *nesdev, struct nes_hw_cq *hw_cq)
3734 {
3735 struct nes_cq *nescq = container_of(hw_cq, struct nes_cq, hw_cq);
3736
3737 /* nes_debug(NES_DBG_CQ, "Processing completion event for iWARP CQ%u.\n",
3738 nescq->hw_cq.cq_number); */
3739 nes_write32(nesdev->regs+NES_CQ_ACK, nescq->hw_cq.cq_number);
3740
3741 if (nescq->ibcq.comp_handler)
3742 nescq->ibcq.comp_handler(&nescq->ibcq, nescq->ibcq.cq_context);
3743
3744 return;
3745 }
3746
3747
3748 /**
3749 * nes_manage_apbvt()
3750 */
3751 int nes_manage_apbvt(struct nes_vnic *nesvnic, u32 accel_local_port,
3752 u32 nic_index, u32 add_port)
3753 {
3754 struct nes_device *nesdev = nesvnic->nesdev;
3755 struct nes_hw_cqp_wqe *cqp_wqe;
3756 struct nes_cqp_request *cqp_request;
3757 int ret = 0;
3758 u16 major_code;
3759
3760 /* Send manage APBVT request to CQP */
3761 cqp_request = nes_get_cqp_request(nesdev);
3762 if (cqp_request == NULL) {
3763 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
3764 return -ENOMEM;
3765 }
3766 cqp_request->waiting = 1;
3767 cqp_wqe = &cqp_request->cqp_wqe;
3768
3769 nes_debug(NES_DBG_QP, "%s APBV for local port=%u(0x%04x), nic_index=%u\n",
3770 (add_port == NES_MANAGE_APBVT_ADD) ? "ADD" : "DEL",
3771 accel_local_port, accel_local_port, nic_index);
3772
3773 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
3774 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, (NES_CQP_MANAGE_APBVT |
3775 ((add_port == NES_MANAGE_APBVT_ADD) ? NES_CQP_APBVT_ADD : 0)));
3776 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
3777 ((nic_index << NES_CQP_APBVT_NIC_SHIFT) | accel_local_port));
3778
3779 nes_debug(NES_DBG_QP, "Waiting for CQP completion for APBVT.\n");
3780
3781 atomic_set(&cqp_request->refcount, 2);
3782 nes_post_cqp_request(nesdev, cqp_request);
3783
3784 if (add_port == NES_MANAGE_APBVT_ADD)
3785 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
3786 NES_EVENT_TIMEOUT);
3787 nes_debug(NES_DBG_QP, "Completed, ret=%u, CQP Major:Minor codes = 0x%04X:0x%04X\n",
3788 ret, cqp_request->major_code, cqp_request->minor_code);
3789 major_code = cqp_request->major_code;
3790
3791 nes_put_cqp_request(nesdev, cqp_request);
3792
3793 if (!ret)
3794 return -ETIME;
3795 else if (major_code)
3796 return -EIO;
3797 else
3798 return 0;
3799 }
3800
3801
3802 /**
3803 * nes_manage_arp_cache
3804 */
3805 void nes_manage_arp_cache(struct net_device *netdev, unsigned char *mac_addr,
3806 u32 ip_addr, u32 action)
3807 {
3808 struct nes_hw_cqp_wqe *cqp_wqe;
3809 struct nes_vnic *nesvnic = netdev_priv(netdev);
3810 struct nes_device *nesdev;
3811 struct nes_cqp_request *cqp_request;
3812 int arp_index;
3813
3814 nesdev = nesvnic->nesdev;
3815 arp_index = nes_arp_table(nesdev, ip_addr, mac_addr, action);
3816 if (arp_index == -1) {
3817 return;
3818 }
3819
3820 /* update the ARP entry */
3821 cqp_request = nes_get_cqp_request(nesdev);
3822 if (cqp_request == NULL) {
3823 nes_debug(NES_DBG_NETDEV, "Failed to get a cqp_request.\n");
3824 return;
3825 }
3826 cqp_request->waiting = 0;
3827 cqp_wqe = &cqp_request->cqp_wqe;
3828 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
3829
3830 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(
3831 NES_CQP_MANAGE_ARP_CACHE | NES_CQP_ARP_PERM);
3832 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(
3833 (u32)PCI_FUNC(nesdev->pcidev->devfn) << NES_CQP_ARP_AEQ_INDEX_SHIFT);
3834 cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(arp_index);
3835
3836 if (action == NES_ARP_ADD) {
3837 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_ARP_VALID);
3838 cqp_wqe->wqe_words[NES_CQP_ARP_WQE_MAC_ADDR_LOW_IDX] = cpu_to_le32(
3839 (((u32)mac_addr[2]) << 24) | (((u32)mac_addr[3]) << 16) |
3840 (((u32)mac_addr[4]) << 8) | (u32)mac_addr[5]);
3841 cqp_wqe->wqe_words[NES_CQP_ARP_WQE_MAC_HIGH_IDX] = cpu_to_le32(
3842 (((u32)mac_addr[0]) << 16) | (u32)mac_addr[1]);
3843 } else {
3844 cqp_wqe->wqe_words[NES_CQP_ARP_WQE_MAC_ADDR_LOW_IDX] = 0;
3845 cqp_wqe->wqe_words[NES_CQP_ARP_WQE_MAC_HIGH_IDX] = 0;
3846 }
3847
3848 nes_debug(NES_DBG_NETDEV, "Not waiting for CQP, cqp.sq_head=%u, cqp.sq_tail=%u\n",
3849 nesdev->cqp.sq_head, nesdev->cqp.sq_tail);
3850
3851 atomic_set(&cqp_request->refcount, 1);
3852 nes_post_cqp_request(nesdev, cqp_request);
3853 }
3854
3855
3856 /**
3857 * flush_wqes
3858 */
3859 void flush_wqes(struct nes_device *nesdev, struct nes_qp *nesqp,
3860 u32 which_wq, u32 wait_completion)
3861 {
3862 struct nes_cqp_request *cqp_request;
3863 struct nes_hw_cqp_wqe *cqp_wqe;
3864 u32 sq_code = (NES_IWARP_CQE_MAJOR_FLUSH << 16) | NES_IWARP_CQE_MINOR_FLUSH;
3865 u32 rq_code = (NES_IWARP_CQE_MAJOR_FLUSH << 16) | NES_IWARP_CQE_MINOR_FLUSH;
3866 int ret;
3867
3868 cqp_request = nes_get_cqp_request(nesdev);
3869 if (cqp_request == NULL) {
3870 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
3871 return;
3872 }
3873 if (wait_completion) {
3874 cqp_request->waiting = 1;
3875 atomic_set(&cqp_request->refcount, 2);
3876 } else {
3877 cqp_request->waiting = 0;
3878 }
3879 cqp_wqe = &cqp_request->cqp_wqe;
3880 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
3881
3882 /* If wqe in error was identified, set code to be put into cqe */
3883 if ((nesqp->term_sq_flush_code) && (which_wq & NES_CQP_FLUSH_SQ)) {
3884 which_wq |= NES_CQP_FLUSH_MAJ_MIN;
3885 sq_code = (CQE_MAJOR_DRV << 16) | nesqp->term_sq_flush_code;
3886 nesqp->term_sq_flush_code = 0;
3887 }
3888
3889 if ((nesqp->term_rq_flush_code) && (which_wq & NES_CQP_FLUSH_RQ)) {
3890 which_wq |= NES_CQP_FLUSH_MAJ_MIN;
3891 rq_code = (CQE_MAJOR_DRV << 16) | nesqp->term_rq_flush_code;
3892 nesqp->term_rq_flush_code = 0;
3893 }
3894
3895 if (which_wq & NES_CQP_FLUSH_MAJ_MIN) {
3896 cqp_wqe->wqe_words[NES_CQP_QP_WQE_FLUSH_SQ_CODE] = cpu_to_le32(sq_code);
3897 cqp_wqe->wqe_words[NES_CQP_QP_WQE_FLUSH_RQ_CODE] = cpu_to_le32(rq_code);
3898 }
3899
3900 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
3901 cpu_to_le32(NES_CQP_FLUSH_WQES | which_wq);
3902 cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(nesqp->hwqp.qp_id);
3903
3904 nes_post_cqp_request(nesdev, cqp_request);
3905
3906 if (wait_completion) {
3907 /* Wait for CQP */
3908 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
3909 NES_EVENT_TIMEOUT);
3910 nes_debug(NES_DBG_QP, "Flush SQ QP WQEs completed, ret=%u,"
3911 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
3912 ret, cqp_request->major_code, cqp_request->minor_code);
3913 nes_put_cqp_request(nesdev, cqp_request);
3914 }
3915 }