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cxgb3: extend copyrights to 2008
[deliverable/linux.git] / drivers / net / cxgb3 / cxgb3_offload.c
CommitLineData
4d22de3e 1/*
a02d44a0 2 * Copyright (c) 2006-2008 Chelsio, Inc. All rights reserved.
4d22de3e
DLR		 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#include <linux/list.h>
34#include <net/neighbour.h>
35#include <linux/notifier.h>
36#include <asm/atomic.h>
37#include <linux/proc_fs.h>
38#include <linux/if_vlan.h>
39#include <net/netevent.h>
40#include <linux/highmem.h>
41#include <linux/vmalloc.h>
42
43#include "common.h"
44#include "regs.h"
45#include "cxgb3_ioctl.h"
46#include "cxgb3_ctl_defs.h"
47#include "cxgb3_defs.h"
48#include "l2t.h"
49#include "firmware_exports.h"
50#include "cxgb3_offload.h"
51
52static LIST_HEAD(client_list);
53static LIST_HEAD(ofld_dev_list);
54static DEFINE_MUTEX(cxgb3_db_lock);
55
56static DEFINE_RWLOCK(adapter_list_lock);
57static LIST_HEAD(adapter_list);
58
59static const unsigned int MAX_ATIDS = 64 * 1024;
c9a6ce50 60static const unsigned int ATID_BASE = 0x10000;
4d22de3e
DLR		 61
62static inline int offload_activated(struct t3cdev *tdev)
63{
64 const struct adapter *adapter = tdev2adap(tdev);
65
66 return (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map));
67}
68
69/**
70 * cxgb3_register_client - register an offload client
71 * @client: the client
72 *
73 * Add the client to the client list,
74 * and call backs the client for each activated offload device
75 */
76void cxgb3_register_client(struct cxgb3_client *client)
77{
78 struct t3cdev *tdev;
79
80 mutex_lock(&cxgb3_db_lock);
81 list_add_tail(&client->client_list, &client_list);
82
83 if (client->add) {
84 list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) {
85 if (offload_activated(tdev))
86 client->add(tdev);
87 }
88 }
89 mutex_unlock(&cxgb3_db_lock);
90}
91
92EXPORT_SYMBOL(cxgb3_register_client);
93
94/**
95 * cxgb3_unregister_client - unregister an offload client
96 * @client: the client
97 *
98 * Remove the client to the client list,
99 * and call backs the client for each activated offload device.
100 */
101void cxgb3_unregister_client(struct cxgb3_client *client)
102{
103 struct t3cdev *tdev;
104
105 mutex_lock(&cxgb3_db_lock);
106 list_del(&client->client_list);
107
108 if (client->remove) {
109 list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) {
110 if (offload_activated(tdev))
111 client->remove(tdev);
112 }
113 }
114 mutex_unlock(&cxgb3_db_lock);
115}
116
117EXPORT_SYMBOL(cxgb3_unregister_client);
118
119/**
120 * cxgb3_add_clients - activate registered clients for an offload device
121 * @tdev: the offload device
122 *
123 * Call backs all registered clients once a offload device is activated
124 */
125void cxgb3_add_clients(struct t3cdev *tdev)
126{
127 struct cxgb3_client *client;
128
129 mutex_lock(&cxgb3_db_lock);
130 list_for_each_entry(client, &client_list, client_list) {
131 if (client->add)
132 client->add(tdev);
133 }
134 mutex_unlock(&cxgb3_db_lock);
135}
136
137/**
138 * cxgb3_remove_clients - deactivates registered clients
139 * for an offload device
140 * @tdev: the offload device
141 *
142 * Call backs all registered clients once a offload device is deactivated
143 */
144void cxgb3_remove_clients(struct t3cdev *tdev)
145{
146 struct cxgb3_client *client;
147
148 mutex_lock(&cxgb3_db_lock);
149 list_for_each_entry(client, &client_list, client_list) {
150 if (client->remove)
151 client->remove(tdev);
152 }
153 mutex_unlock(&cxgb3_db_lock);
154}
155
156static struct net_device *get_iff_from_mac(struct adapter *adapter,
157 const unsigned char *mac,
158 unsigned int vlan)
159{
160 int i;
161
162 for_each_port(adapter, i) {
5c15bdec 163 struct vlan_group *grp;
4d22de3e
DLR		 164 struct net_device *dev = adapter->port[i];
165 const struct port_info *p = netdev_priv(dev);
166
167 if (!memcmp(dev->dev_addr, mac, ETH_ALEN)) {
168 if (vlan && vlan != VLAN_VID_MASK) {
169 grp = p->vlan_grp;
5c15bdec
DA		 170 dev = NULL;
171 if (grp)
172 dev = vlan_group_get_device(grp, vlan);
4d22de3e
DLR		 173 } else
174 while (dev->master)
175 dev = dev->master;
176 return dev;
177 }
178 }
179 return NULL;
180}
181
182static int cxgb_ulp_iscsi_ctl(struct adapter *adapter, unsigned int req,
183 void *data)
184{
185 int ret = 0;
186 struct ulp_iscsi_info *uiip = data;
187
188 switch (req) {
189 case ULP_ISCSI_GET_PARAMS:
190 uiip->pdev = adapter->pdev;
191 uiip->llimit = t3_read_reg(adapter, A_ULPRX_ISCSI_LLIMIT);
192 uiip->ulimit = t3_read_reg(adapter, A_ULPRX_ISCSI_ULIMIT);
193 uiip->tagmask = t3_read_reg(adapter, A_ULPRX_ISCSI_TAGMASK);
194 /*
195 * On tx, the iscsi pdu has to be <= tx page size and has to
196 * fit into the Tx PM FIFO.
197 */
198 uiip->max_txsz = min(adapter->params.tp.tx_pg_size,
199 t3_read_reg(adapter, A_PM1_TX_CFG) >> 17);
200 /* on rx, the iscsi pdu has to be < rx page size and the
201 whole pdu + cpl headers has to fit into one sge buffer */
202 uiip->max_rxsz = min_t(unsigned int,
203 adapter->params.tp.rx_pg_size,
204 (adapter->sge.qs[0].fl[1].buf_size -
205 sizeof(struct cpl_rx_data) * 2 -
206 sizeof(struct cpl_rx_data_ddp)));
207 break;
208 case ULP_ISCSI_SET_PARAMS:
209 t3_write_reg(adapter, A_ULPRX_ISCSI_TAGMASK, uiip->tagmask);
9439f749
KX		 210 /* set MaxRxData and MaxCoalesceSize to 16224 */
211 t3_write_reg(adapter, A_TP_PARA_REG2, 0x3f603f60);
212 /* program the ddp page sizes */
213 {
214 int i;
215 unsigned int val = 0;
216 for (i = 0; i < 4; i++)
217 val |= (uiip->pgsz_factor[i] & 0xF) << (8 * i);
218 if (val)
219 t3_write_reg(adapter, A_ULPRX_ISCSI_PSZ, val);
220 }
4d22de3e
DLR		 221 break;
222 default:
223 ret = -EOPNOTSUPP;
224 }
225 return ret;
226}
227
228/* Response queue used for RDMA events. */
229#define ASYNC_NOTIF_RSPQ 0
230
231static int cxgb_rdma_ctl(struct adapter *adapter, unsigned int req, void *data)
232{
233 int ret = 0;
234
235 switch (req) {
9265fabf
SH		 236 case RDMA_GET_PARAMS: {
237 struct rdma_info *rdma = data;
4d22de3e
DLR		 238 struct pci_dev *pdev = adapter->pdev;
239
9265fabf
SH		 240 rdma->udbell_physbase = pci_resource_start(pdev, 2);
241 rdma->udbell_len = pci_resource_len(pdev, 2);
242 rdma->tpt_base =
4d22de3e 243 t3_read_reg(adapter, A_ULPTX_TPT_LLIMIT);
9265fabf
SH		 244 rdma->tpt_top = t3_read_reg(adapter, A_ULPTX_TPT_ULIMIT);
245 rdma->pbl_base =
4d22de3e 246 t3_read_reg(adapter, A_ULPTX_PBL_LLIMIT);
9265fabf
SH		 247 rdma->pbl_top = t3_read_reg(adapter, A_ULPTX_PBL_ULIMIT);
248 rdma->rqt_base = t3_read_reg(adapter, A_ULPRX_RQ_LLIMIT);
249 rdma->rqt_top = t3_read_reg(adapter, A_ULPRX_RQ_ULIMIT);
250 rdma->kdb_addr = adapter->regs + A_SG_KDOORBELL;
251 rdma->pdev = pdev;
4d22de3e
DLR		 252 break;
253 }
254 case RDMA_CQ_OP:{
255 unsigned long flags;
9265fabf 256 struct rdma_cq_op *rdma = data;
4d22de3e
DLR		 257
258 /* may be called in any context */
259 spin_lock_irqsave(&adapter->sge.reg_lock, flags);
9265fabf
SH		 260 ret = t3_sge_cqcntxt_op(adapter, rdma->id, rdma->op,
261 rdma->credits);
4d22de3e
DLR		 262 spin_unlock_irqrestore(&adapter->sge.reg_lock, flags);
263 break;
264 }
265 case RDMA_GET_MEM:{
266 struct ch_mem_range *t = data;
267 struct mc7 *mem;
268
269 if ((t->addr & 7) || (t->len & 7))
270 return -EINVAL;
271 if (t->mem_id == MEM_CM)
272 mem = &adapter->cm;
273 else if (t->mem_id == MEM_PMRX)
274 mem = &adapter->pmrx;
275 else if (t->mem_id == MEM_PMTX)
276 mem = &adapter->pmtx;
277 else
278 return -EINVAL;
279
280 ret =
281 t3_mc7_bd_read(mem, t->addr / 8, t->len / 8,
282 (u64 *) t->buf);
283 if (ret)
284 return ret;
285 break;
286 }
287 case RDMA_CQ_SETUP:{
9265fabf 288 struct rdma_cq_setup *rdma = data;
4d22de3e
DLR		 289
290 spin_lock_irq(&adapter->sge.reg_lock);
291 ret =
9265fabf
SH		 292 t3_sge_init_cqcntxt(adapter, rdma->id,
293 rdma->base_addr, rdma->size,
4d22de3e 294 ASYNC_NOTIF_RSPQ,
9265fabf
SH		 295 rdma->ovfl_mode, rdma->credits,
296 rdma->credit_thres);
4d22de3e
DLR		 297 spin_unlock_irq(&adapter->sge.reg_lock);
298 break;
299 }
300 case RDMA_CQ_DISABLE:
301 spin_lock_irq(&adapter->sge.reg_lock);
302 ret = t3_sge_disable_cqcntxt(adapter, *(unsigned int *)data);
303 spin_unlock_irq(&adapter->sge.reg_lock);
304 break;
305 case RDMA_CTRL_QP_SETUP:{
9265fabf 306 struct rdma_ctrlqp_setup *rdma = data;
4d22de3e
DLR		 307
308 spin_lock_irq(&adapter->sge.reg_lock);
309 ret = t3_sge_init_ecntxt(adapter, FW_RI_SGEEC_START, 0,
310 SGE_CNTXT_RDMA,
311 ASYNC_NOTIF_RSPQ,
9265fabf 312 rdma->base_addr, rdma->size,
4d22de3e
DLR		 313 FW_RI_TID_START, 1, 0);
314 spin_unlock_irq(&adapter->sge.reg_lock);
315 break;
316 }
14cc180f
SW		 317 case RDMA_GET_MIB: {
318 spin_lock(&adapter->stats_lock);
319 t3_tp_get_mib_stats(adapter, (struct tp_mib_stats *)data);
320 spin_unlock(&adapter->stats_lock);
321 break;
322 }
4d22de3e
DLR		 323 default:
324 ret = -EOPNOTSUPP;
325 }
326 return ret;
327}
328
329static int cxgb_offload_ctl(struct t3cdev *tdev, unsigned int req, void *data)
330{
331 struct adapter *adapter = tdev2adap(tdev);
332 struct tid_range *tid;
333 struct mtutab *mtup;
334 struct iff_mac *iffmacp;
335 struct ddp_params *ddpp;
336 struct adap_ports *ports;
e22bb45d
DLR		 337 struct ofld_page_info *rx_page_info;
338 struct tp_params *tp = &adapter->params.tp;
4d22de3e
DLR		 339 int i;
340
341 switch (req) {
342 case GET_MAX_OUTSTANDING_WR:
343 *(unsigned int *)data = FW_WR_NUM;
344 break;
345 case GET_WR_LEN:
346 *(unsigned int *)data = WR_FLITS;
347 break;
348 case GET_TX_MAX_CHUNK:
349 *(unsigned int *)data = 1 << 20; /* 1MB */
350 break;
351 case GET_TID_RANGE:
352 tid = data;
353 tid->num = t3_mc5_size(&adapter->mc5) -
354 adapter->params.mc5.nroutes -
355 adapter->params.mc5.nfilters - adapter->params.mc5.nservers;
356 tid->base = 0;
357 break;
358 case GET_STID_RANGE:
359 tid = data;
360 tid->num = adapter->params.mc5.nservers;
361 tid->base = t3_mc5_size(&adapter->mc5) - tid->num -
362 adapter->params.mc5.nfilters - adapter->params.mc5.nroutes;
363 break;
364 case GET_L2T_CAPACITY:
365 *(unsigned int *)data = 2048;
366 break;
367 case GET_MTUS:
368 mtup = data;
369 mtup->size = NMTUS;
370 mtup->mtus = adapter->params.mtus;
371 break;
372 case GET_IFF_FROM_MAC:
373 iffmacp = data;
374 iffmacp->dev = get_iff_from_mac(adapter, iffmacp->mac_addr,
375 iffmacp->vlan_tag &
376 VLAN_VID_MASK);
377 break;
378 case GET_DDP_PARAMS:
379 ddpp = data;
380 ddpp->llimit = t3_read_reg(adapter, A_ULPRX_TDDP_LLIMIT);
381 ddpp->ulimit = t3_read_reg(adapter, A_ULPRX_TDDP_ULIMIT);
382 ddpp->tag_mask = t3_read_reg(adapter, A_ULPRX_TDDP_TAGMASK);
383 break;
384 case GET_PORTS:
385 ports = data;
386 ports->nports = adapter->params.nports;
387 for_each_port(adapter, i)
388 ports->lldevs[i] = adapter->port[i];
389 break;
390 case ULP_ISCSI_GET_PARAMS:
391 case ULP_ISCSI_SET_PARAMS:
392 if (!offload_running(adapter))
393 return -EAGAIN;
394 return cxgb_ulp_iscsi_ctl(adapter, req, data);
395 case RDMA_GET_PARAMS:
396 case RDMA_CQ_OP:
397 case RDMA_CQ_SETUP:
398 case RDMA_CQ_DISABLE:
399 case RDMA_CTRL_QP_SETUP:
400 case RDMA_GET_MEM:
14cc180f 401 case RDMA_GET_MIB:
4d22de3e
DLR		 402 if (!offload_running(adapter))
403 return -EAGAIN;
404 return cxgb_rdma_ctl(adapter, req, data);
e22bb45d
DLR		 405 case GET_RX_PAGE_INFO:
406 rx_page_info = data;
407 rx_page_info->page_size = tp->rx_pg_size;
408 rx_page_info->num = tp->rx_num_pgs;
409 break;
4d22de3e
DLR		 410 default:
411 return -EOPNOTSUPP;
412 }
413 return 0;
414}
415
416/*
417 * Dummy handler for Rx offload packets in case we get an offload packet before
418 * proper processing is setup. This complains and drops the packet as it isn't
419 * normal to get offload packets at this stage.
420 */
421static int rx_offload_blackhole(struct t3cdev *dev, struct sk_buff **skbs,
422 int n)
423{
4d22de3e
DLR		 424 while (n--)
425 dev_kfree_skb_any(skbs[n]);
426 return 0;
427}
428
429static void dummy_neigh_update(struct t3cdev *dev, struct neighbour *neigh)
430{
431}
432
433void cxgb3_set_dummy_ops(struct t3cdev *dev)
434{
435 dev->recv = rx_offload_blackhole;
436 dev->neigh_update = dummy_neigh_update;
437}
438
439/*
440 * Free an active-open TID.
441 */
442void *cxgb3_free_atid(struct t3cdev *tdev, int atid)
443{
444 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
445 union active_open_entry *p = atid2entry(t, atid);
446 void *ctx = p->t3c_tid.ctx;
447
448 spin_lock_bh(&t->atid_lock);
449 p->next = t->afree;
450 t->afree = p;
451 t->atids_in_use--;
452 spin_unlock_bh(&t->atid_lock);
453
454 return ctx;
455}
456
457EXPORT_SYMBOL(cxgb3_free_atid);
458
459/*
460 * Free a server TID and return it to the free pool.
461 */
462void cxgb3_free_stid(struct t3cdev *tdev, int stid)
463{
464 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
465 union listen_entry *p = stid2entry(t, stid);
466
467 spin_lock_bh(&t->stid_lock);
468 p->next = t->sfree;
469 t->sfree = p;
470 t->stids_in_use--;
471 spin_unlock_bh(&t->stid_lock);
472}
473
474EXPORT_SYMBOL(cxgb3_free_stid);
475
476void cxgb3_insert_tid(struct t3cdev *tdev, struct cxgb3_client *client,
477 void *ctx, unsigned int tid)
478{
479 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
480
481 t->tid_tab[tid].client = client;
482 t->tid_tab[tid].ctx = ctx;
483 atomic_inc(&t->tids_in_use);
484}
485
486EXPORT_SYMBOL(cxgb3_insert_tid);
487
488/*
489 * Populate a TID_RELEASE WR. The skb must be already propely sized.
490 */
491static inline void mk_tid_release(struct sk_buff *skb, unsigned int tid)
492{
493 struct cpl_tid_release *req;
494
495 skb->priority = CPL_PRIORITY_SETUP;
496 req = (struct cpl_tid_release *)__skb_put(skb, sizeof(*req));
497 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
498 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, tid));
499}
500
501static void t3_process_tid_release_list(struct work_struct *work)
502{
503 struct t3c_data *td = container_of(work, struct t3c_data,
504 tid_release_task);
505 struct sk_buff *skb;
506 struct t3cdev *tdev = td->dev;
2eab17ab 507
4d22de3e
DLR		 508
509 spin_lock_bh(&td->tid_release_lock);
510 while (td->tid_release_list) {
511 struct t3c_tid_entry *p = td->tid_release_list;
512
513 td->tid_release_list = (struct t3c_tid_entry *)p->ctx;
514 spin_unlock_bh(&td->tid_release_lock);
515
516 skb = alloc_skb(sizeof(struct cpl_tid_release),
517 GFP_KERNEL | __GFP_NOFAIL);
518 mk_tid_release(skb, p - td->tid_maps.tid_tab);
519 cxgb3_ofld_send(tdev, skb);
520 p->ctx = NULL;
521 spin_lock_bh(&td->tid_release_lock);
522 }
523 spin_unlock_bh(&td->tid_release_lock);
524}
525
526/* use ctx as a next pointer in the tid release list */
527void cxgb3_queue_tid_release(struct t3cdev *tdev, unsigned int tid)
528{
529 struct t3c_data *td = T3C_DATA(tdev);
530 struct t3c_tid_entry *p = &td->tid_maps.tid_tab[tid];
531
532 spin_lock_bh(&td->tid_release_lock);
533 p->ctx = (void *)td->tid_release_list;
606fcd0b 534 p->client = NULL;
4d22de3e
DLR		 535 td->tid_release_list = p;
536 if (!p->ctx)
537 schedule_work(&td->tid_release_task);
538 spin_unlock_bh(&td->tid_release_lock);
539}
540
541EXPORT_SYMBOL(cxgb3_queue_tid_release);
542
543/*
544 * Remove a tid from the TID table. A client may defer processing its last
545 * CPL message if it is locked at the time it arrives, and while the message
546 * sits in the client's backlog the TID may be reused for another connection.
547 * To handle this we atomically switch the TID association if it still points
548 * to the original client context.
549 */
550void cxgb3_remove_tid(struct t3cdev *tdev, void *ctx, unsigned int tid)
551{
552 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
553
554 BUG_ON(tid >= t->ntids);
555 if (tdev->type == T3A)
556 (void)cmpxchg(&t->tid_tab[tid].ctx, ctx, NULL);
557 else {
558 struct sk_buff *skb;
559
560 skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC);
561 if (likely(skb)) {
562 mk_tid_release(skb, tid);
563 cxgb3_ofld_send(tdev, skb);
564 t->tid_tab[tid].ctx = NULL;
565 } else
566 cxgb3_queue_tid_release(tdev, tid);
567 }
568 atomic_dec(&t->tids_in_use);
569}
570
571EXPORT_SYMBOL(cxgb3_remove_tid);
572
573int cxgb3_alloc_atid(struct t3cdev *tdev, struct cxgb3_client *client,
574 void *ctx)
575{
576 int atid = -1;
577 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
578
579 spin_lock_bh(&t->atid_lock);
9f238486
DLR		 580 if (t->afree &&
581 t->atids_in_use + atomic_read(&t->tids_in_use) + MC5_MIN_TIDS <=
582 t->ntids) {
4d22de3e
DLR		 583 union active_open_entry *p = t->afree;
584
585 atid = (p - t->atid_tab) + t->atid_base;
586 t->afree = p->next;
587 p->t3c_tid.ctx = ctx;
588 p->t3c_tid.client = client;
589 t->atids_in_use++;
590 }
591 spin_unlock_bh(&t->atid_lock);
592 return atid;
593}
594
595EXPORT_SYMBOL(cxgb3_alloc_atid);
596
597int cxgb3_alloc_stid(struct t3cdev *tdev, struct cxgb3_client *client,
598 void *ctx)
599{
600 int stid = -1;
601 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
602
603 spin_lock_bh(&t->stid_lock);
604 if (t->sfree) {
605 union listen_entry *p = t->sfree;
606
607 stid = (p - t->stid_tab) + t->stid_base;
608 t->sfree = p->next;
609 p->t3c_tid.ctx = ctx;
610 p->t3c_tid.client = client;
611 t->stids_in_use++;
612 }
613 spin_unlock_bh(&t->stid_lock);
614 return stid;
615}
616
617EXPORT_SYMBOL(cxgb3_alloc_stid);
618
5fbf816f
DLR		 619/* Get the t3cdev associated with a net_device */
620struct t3cdev *dev2t3cdev(struct net_device *dev)
621{
622 const struct port_info *pi = netdev_priv(dev);
623
624 return (struct t3cdev *)pi->adapter;
625}
626
627EXPORT_SYMBOL(dev2t3cdev);
628
4d22de3e
DLR		 629static int do_smt_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
630{
631 struct cpl_smt_write_rpl *rpl = cplhdr(skb);
632
633 if (rpl->status != CPL_ERR_NONE)
634 printk(KERN_ERR
635 "Unexpected SMT_WRITE_RPL status %u for entry %u\n",
636 rpl->status, GET_TID(rpl));
637
638 return CPL_RET_BUF_DONE;
639}
640
641static int do_l2t_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
642{
643 struct cpl_l2t_write_rpl *rpl = cplhdr(skb);
644
645 if (rpl->status != CPL_ERR_NONE)
646 printk(KERN_ERR
647 "Unexpected L2T_WRITE_RPL status %u for entry %u\n",
648 rpl->status, GET_TID(rpl));
649
650 return CPL_RET_BUF_DONE;
651}
652
b881955b
DLR		 653static int do_rte_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
654{
655 struct cpl_rte_write_rpl *rpl = cplhdr(skb);
656
657 if (rpl->status != CPL_ERR_NONE)
658 printk(KERN_ERR
659 "Unexpected RTE_WRITE_RPL status %u for entry %u\n",
660 rpl->status, GET_TID(rpl));
661
662 return CPL_RET_BUF_DONE;
663}
664
4d22de3e
DLR		 665static int do_act_open_rpl(struct t3cdev *dev, struct sk_buff *skb)
666{
667 struct cpl_act_open_rpl *rpl = cplhdr(skb);
668 unsigned int atid = G_TID(ntohl(rpl->atid));
669 struct t3c_tid_entry *t3c_tid;
670
671 t3c_tid = lookup_atid(&(T3C_DATA(dev))->tid_maps, atid);
606fcd0b
DLR		 672 if (t3c_tid && t3c_tid->ctx && t3c_tid->client &&
673 t3c_tid->client->handlers &&
4d22de3e
DLR		 674 t3c_tid->client->handlers[CPL_ACT_OPEN_RPL]) {
675 return t3c_tid->client->handlers[CPL_ACT_OPEN_RPL] (dev, skb,
676 t3c_tid->
677 ctx);
678 } else {
679 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
680 dev->name, CPL_ACT_OPEN_RPL);
681 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
682 }
683}
684
685static int do_stid_rpl(struct t3cdev *dev, struct sk_buff *skb)
686{
687 union opcode_tid *p = cplhdr(skb);
688 unsigned int stid = G_TID(ntohl(p->opcode_tid));
689 struct t3c_tid_entry *t3c_tid;
690
691 t3c_tid = lookup_stid(&(T3C_DATA(dev))->tid_maps, stid);
606fcd0b 692 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 693 t3c_tid->client->handlers[p->opcode]) {
694 return t3c_tid->client->handlers[p->opcode] (dev, skb,
695 t3c_tid->ctx);
696 } else {
697 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
698 dev->name, p->opcode);
699 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
700 }
701}
702
703static int do_hwtid_rpl(struct t3cdev *dev, struct sk_buff *skb)
704{
705 union opcode_tid *p = cplhdr(skb);
706 unsigned int hwtid = G_TID(ntohl(p->opcode_tid));
707 struct t3c_tid_entry *t3c_tid;
708
709 t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
606fcd0b 710 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 711 t3c_tid->client->handlers[p->opcode]) {
712 return t3c_tid->client->handlers[p->opcode]
713 (dev, skb, t3c_tid->ctx);
714 } else {
715 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
716 dev->name, p->opcode);
717 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
718 }
719}
720
721static int do_cr(struct t3cdev *dev, struct sk_buff *skb)
722{
723 struct cpl_pass_accept_req *req = cplhdr(skb);
724 unsigned int stid = G_PASS_OPEN_TID(ntohl(req->tos_tid));
c9a6ce50 725 struct tid_info *t = &(T3C_DATA(dev))->tid_maps;
4d22de3e 726 struct t3c_tid_entry *t3c_tid;
c9a6ce50 727 unsigned int tid = GET_TID(req);
4d22de3e 728
c9a6ce50
DLR		 729 if (unlikely(tid >= t->ntids)) {
730 printk("%s: passive open TID %u too large\n",
731 dev->name, tid);
732 t3_fatal_err(tdev2adap(dev));
733 return CPL_RET_BUF_DONE;
734 }
735
736 t3c_tid = lookup_stid(t, stid);
737 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 738 t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]) {
739 return t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]
740 (dev, skb, t3c_tid->ctx);
741 } else {
742 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
743 dev->name, CPL_PASS_ACCEPT_REQ);
744 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
745 }
746}
747
606fcd0b
DLR		 748/*
749 * Returns an sk_buff for a reply CPL message of size len. If the input
750 * sk_buff has no other users it is trimmed and reused, otherwise a new buffer
751 * is allocated. The input skb must be of size at least len. Note that this
752 * operation does not destroy the original skb data even if it decides to reuse
753 * the buffer.
754 */
755static struct sk_buff *cxgb3_get_cpl_reply_skb(struct sk_buff *skb, size_t len,
1f41bb3a 756 gfp_t gfp)
606fcd0b
DLR		 757{
758 if (likely(!skb_cloned(skb))) {
759 BUG_ON(skb->len < len);
760 __skb_trim(skb, len);
761 skb_get(skb);
762 } else {
763 skb = alloc_skb(len, gfp);
764 if (skb)
765 __skb_put(skb, len);
766 }
767 return skb;
768}
769
4d22de3e
DLR		 770static int do_abort_req_rss(struct t3cdev *dev, struct sk_buff *skb)
771{
772 union opcode_tid *p = cplhdr(skb);
773 unsigned int hwtid = G_TID(ntohl(p->opcode_tid));
774 struct t3c_tid_entry *t3c_tid;
775
776 t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
606fcd0b 777 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 778 t3c_tid->client->handlers[p->opcode]) {
779 return t3c_tid->client->handlers[p->opcode]
780 (dev, skb, t3c_tid->ctx);
781 } else {
782 struct cpl_abort_req_rss *req = cplhdr(skb);
783 struct cpl_abort_rpl *rpl;
606fcd0b
DLR		 784 struct sk_buff *reply_skb;
785 unsigned int tid = GET_TID(req);
786 u8 cmd = req->status;
787
788 if (req->status == CPL_ERR_RTX_NEG_ADVICE ||
789 req->status == CPL_ERR_PERSIST_NEG_ADVICE)
790 goto out;
4d22de3e 791
606fcd0b
DLR		 792 reply_skb = cxgb3_get_cpl_reply_skb(skb,
793 sizeof(struct
794 cpl_abort_rpl),
795 GFP_ATOMIC);
796
797 if (!reply_skb) {
4d22de3e
DLR		 798 printk("do_abort_req_rss: couldn't get skb!\n");
799 goto out;
800 }
606fcd0b
DLR		 801 reply_skb->priority = CPL_PRIORITY_DATA;
802 __skb_put(reply_skb, sizeof(struct cpl_abort_rpl));
803 rpl = cplhdr(reply_skb);
4d22de3e
DLR		 804 rpl->wr.wr_hi =
805 htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL));
606fcd0b
DLR		 806 rpl->wr.wr_lo = htonl(V_WR_TID(tid));
807 OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, tid));
808 rpl->cmd = cmd;
809 cxgb3_ofld_send(dev, reply_skb);
4d22de3e
DLR		 810out:
811 return CPL_RET_BUF_DONE;
812 }
813}
814
815static int do_act_establish(struct t3cdev *dev, struct sk_buff *skb)
816{
817 struct cpl_act_establish *req = cplhdr(skb);
818 unsigned int atid = G_PASS_OPEN_TID(ntohl(req->tos_tid));
c9a6ce50 819 struct tid_info *t = &(T3C_DATA(dev))->tid_maps;
4d22de3e 820 struct t3c_tid_entry *t3c_tid;
c9a6ce50 821 unsigned int tid = GET_TID(req);
4d22de3e 822
c9a6ce50
DLR		 823 if (unlikely(tid >= t->ntids)) {
824 printk("%s: active establish TID %u too large\n",
825 dev->name, tid);
826 t3_fatal_err(tdev2adap(dev));
827 return CPL_RET_BUF_DONE;
828 }
829
830 t3c_tid = lookup_atid(t, atid);
606fcd0b 831 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 832 t3c_tid->client->handlers[CPL_ACT_ESTABLISH]) {
833 return t3c_tid->client->handlers[CPL_ACT_ESTABLISH]
834 (dev, skb, t3c_tid->ctx);
835 } else {
836 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
c9a6ce50 837 dev->name, CPL_ACT_ESTABLISH);
4d22de3e
DLR		 838 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
839 }
840}
841
4d22de3e
DLR		 842static int do_trace(struct t3cdev *dev, struct sk_buff *skb)
843{
844 struct cpl_trace_pkt *p = cplhdr(skb);
845
b5344972 846 skb->protocol = htons(0xffff);
4d22de3e
DLR		 847 skb->dev = dev->lldev;
848 skb_pull(skb, sizeof(*p));
459a98ed 849 skb_reset_mac_header(skb);
4d22de3e
DLR		 850 netif_receive_skb(skb);
851 return 0;
852}
853
fa3a6cb4
AV		 854/*
855 * That skb would better have come from process_responses() where we abuse
856 * ->priority and ->csum to carry our data. NB: if we get to per-arch
857 * ->csum, the things might get really interesting here.
858 */
859
860static inline u32 get_hwtid(struct sk_buff *skb)
861{
862 return ntohl((__force __be32)skb->priority) >> 8 & 0xfffff;
863}
864
865static inline u32 get_opcode(struct sk_buff *skb)
866{
867 return G_OPCODE(ntohl((__force __be32)skb->csum));
868}
869
4d22de3e
DLR		 870static int do_term(struct t3cdev *dev, struct sk_buff *skb)
871{
fa3a6cb4
AV		 872 unsigned int hwtid = get_hwtid(skb);
873 unsigned int opcode = get_opcode(skb);
4d22de3e
DLR		 874 struct t3c_tid_entry *t3c_tid;
875
876 t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
606fcd0b 877 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 878 t3c_tid->client->handlers[opcode]) {
879 return t3c_tid->client->handlers[opcode] (dev, skb,
880 t3c_tid->ctx);
881 } else {
882 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
883 dev->name, opcode);
884 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
885 }
886}
887
888static int nb_callback(struct notifier_block *self, unsigned long event,
889 void *ctx)
890{
891 switch (event) {
892 case (NETEVENT_NEIGH_UPDATE):{
893 cxgb_neigh_update((struct neighbour *)ctx);
894 break;
895 }
896 case (NETEVENT_PMTU_UPDATE):
897 break;
898 case (NETEVENT_REDIRECT):{
899 struct netevent_redirect *nr = ctx;
900 cxgb_redirect(nr->old, nr->new);
901 cxgb_neigh_update(nr->new->neighbour);
902 break;
903 }
904 default:
905 break;
906 }
907 return 0;
908}
909
910static struct notifier_block nb = {
911 .notifier_call = nb_callback
912};
913
914/*
915 * Process a received packet with an unknown/unexpected CPL opcode.
916 */
917static int do_bad_cpl(struct t3cdev *dev, struct sk_buff *skb)
918{
919 printk(KERN_ERR "%s: received bad CPL command 0x%x\n", dev->name,
920 *skb->data);
921 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
922}
923
924/*
925 * Handlers for each CPL opcode
926 */
927static cpl_handler_func cpl_handlers[NUM_CPL_CMDS];
928
929/*
930 * Add a new handler to the CPL dispatch table. A NULL handler may be supplied
931 * to unregister an existing handler.
932 */
933void t3_register_cpl_handler(unsigned int opcode, cpl_handler_func h)
934{
935 if (opcode < NUM_CPL_CMDS)
936 cpl_handlers[opcode] = h ? h : do_bad_cpl;
937 else
938 printk(KERN_ERR "T3C: handler registration for "
939 "opcode %x failed\n", opcode);
940}
941
942EXPORT_SYMBOL(t3_register_cpl_handler);
943
944/*
945 * T3CDEV's receive method.
946 */
947int process_rx(struct t3cdev *dev, struct sk_buff **skbs, int n)
948{
949 while (n--) {
950 struct sk_buff *skb = *skbs++;
fa3a6cb4 951 unsigned int opcode = get_opcode(skb);
4d22de3e
DLR		 952 int ret = cpl_handlers[opcode] (dev, skb);
953
954#if VALIDATE_TID
955 if (ret & CPL_RET_UNKNOWN_TID) {
956 union opcode_tid *p = cplhdr(skb);
957
958 printk(KERN_ERR "%s: CPL message (opcode %u) had "
959 "unknown TID %u\n", dev->name, opcode,
960 G_TID(ntohl(p->opcode_tid)));
961 }
962#endif
963 if (ret & CPL_RET_BUF_DONE)
964 kfree_skb(skb);
965 }
966 return 0;
967}
968
969/*
970 * Sends an sk_buff to a T3C driver after dealing with any active network taps.
971 */
972int cxgb3_ofld_send(struct t3cdev *dev, struct sk_buff *skb)
973{
974 int r;
975
976 local_bh_disable();
977 r = dev->send(dev, skb);
978 local_bh_enable();
979 return r;
980}
981
982EXPORT_SYMBOL(cxgb3_ofld_send);
983
984static int is_offloading(struct net_device *dev)
985{
986 struct adapter *adapter;
987 int i;
988
989 read_lock_bh(&adapter_list_lock);
990 list_for_each_entry(adapter, &adapter_list, adapter_list) {
991 for_each_port(adapter, i) {
992 if (dev == adapter->port[i]) {
993 read_unlock_bh(&adapter_list_lock);
994 return 1;
995 }
996 }
997 }
998 read_unlock_bh(&adapter_list_lock);
999 return 0;
1000}
1001
1002void cxgb_neigh_update(struct neighbour *neigh)
1003{
1004 struct net_device *dev = neigh->dev;
1005
1006 if (dev && (is_offloading(dev))) {
5fbf816f 1007 struct t3cdev *tdev = dev2t3cdev(dev);
4d22de3e
DLR		 1008
1009 BUG_ON(!tdev);
1010 t3_l2t_update(tdev, neigh);
1011 }
1012}
1013
1014static void set_l2t_ix(struct t3cdev *tdev, u32 tid, struct l2t_entry *e)
1015{
1016 struct sk_buff *skb;
1017 struct cpl_set_tcb_field *req;
1018
1019 skb = alloc_skb(sizeof(*req), GFP_ATOMIC);
1020 if (!skb) {
b39d66a8 1021 printk(KERN_ERR "%s: cannot allocate skb!\n", __func__);
4d22de3e
DLR		 1022 return;
1023 }
1024 skb->priority = CPL_PRIORITY_CONTROL;
1025 req = (struct cpl_set_tcb_field *)skb_put(skb, sizeof(*req));
1026 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
1027 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid));
1028 req->reply = 0;
1029 req->cpu_idx = 0;
1030 req->word = htons(W_TCB_L2T_IX);
1031 req->mask = cpu_to_be64(V_TCB_L2T_IX(M_TCB_L2T_IX));
1032 req->val = cpu_to_be64(V_TCB_L2T_IX(e->idx));
1033 tdev->send(tdev, skb);
1034}
1035
1036void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
1037{
1038 struct net_device *olddev, *newdev;
1039 struct tid_info *ti;
1040 struct t3cdev *tdev;
1041 u32 tid;
1042 int update_tcb;
1043 struct l2t_entry *e;
1044 struct t3c_tid_entry *te;
1045
1046 olddev = old->neighbour->dev;
1047 newdev = new->neighbour->dev;
1048 if (!is_offloading(olddev))
1049 return;
1050 if (!is_offloading(newdev)) {
f07b2e40 1051 printk(KERN_WARNING "%s: Redirect to non-offload "
b39d66a8 1052 "device ignored.\n", __func__);
4d22de3e
DLR		 1053 return;
1054 }
5fbf816f 1055 tdev = dev2t3cdev(olddev);
4d22de3e 1056 BUG_ON(!tdev);
5fbf816f 1057 if (tdev != dev2t3cdev(newdev)) {
4d22de3e 1058 printk(KERN_WARNING "%s: Redirect to different "
b39d66a8 1059 "offload device ignored.\n", __func__);
4d22de3e
DLR		 1060 return;
1061 }
1062
1063 /* Add new L2T entry */
1064 e = t3_l2t_get(tdev, new->neighbour, newdev);
1065 if (!e) {
1066 printk(KERN_ERR "%s: couldn't allocate new l2t entry!\n",
b39d66a8 1067 __func__);
4d22de3e
DLR		 1068 return;
1069 }
1070
1071 /* Walk tid table and notify clients of dst change. */
1072 ti = &(T3C_DATA(tdev))->tid_maps;
1073 for (tid = 0; tid < ti->ntids; tid++) {
1074 te = lookup_tid(ti, tid);
1075 BUG_ON(!te);
606fcd0b 1076 if (te && te->ctx && te->client && te->client->redirect) {
4d22de3e
DLR		 1077 update_tcb = te->client->redirect(te->ctx, old, new, e);
1078 if (update_tcb) {
1079 l2t_hold(L2DATA(tdev), e);
1080 set_l2t_ix(tdev, tid, e);
1081 }
1082 }
1083 }
1084 l2t_release(L2DATA(tdev), e);
1085}
1086
1087/*
1088 * Allocate a chunk of memory using kmalloc or, if that fails, vmalloc.
1089 * The allocated memory is cleared.
1090 */
1091void *cxgb_alloc_mem(unsigned long size)
1092{
1093 void *p = kmalloc(size, GFP_KERNEL);
1094
1095 if (!p)
1096 p = vmalloc(size);
1097 if (p)
1098 memset(p, 0, size);
1099 return p;
1100}
1101
1102/*
1103 * Free memory allocated through t3_alloc_mem().
1104 */
1105void cxgb_free_mem(void *addr)
1106{
9e2779fa 1107 if (is_vmalloc_addr(addr))
4d22de3e
DLR		 1108 vfree(addr);
1109 else
1110 kfree(addr);
1111}
1112
1113/*
1114 * Allocate and initialize the TID tables. Returns 0 on success.
1115 */
1116static int init_tid_tabs(struct tid_info *t, unsigned int ntids,
1117 unsigned int natids, unsigned int nstids,
1118 unsigned int atid_base, unsigned int stid_base)
1119{
1120 unsigned long size = ntids * sizeof(*t->tid_tab) +
1121 natids * sizeof(*t->atid_tab) + nstids * sizeof(*t->stid_tab);
1122
1123 t->tid_tab = cxgb_alloc_mem(size);
1124 if (!t->tid_tab)
1125 return -ENOMEM;
1126
1127 t->stid_tab = (union listen_entry *)&t->tid_tab[ntids];
1128 t->atid_tab = (union active_open_entry *)&t->stid_tab[nstids];
1129 t->ntids = ntids;
1130 t->nstids = nstids;
1131 t->stid_base = stid_base;
1132 t->sfree = NULL;
1133 t->natids = natids;
1134 t->atid_base = atid_base;
1135 t->afree = NULL;
1136 t->stids_in_use = t->atids_in_use = 0;
1137 atomic_set(&t->tids_in_use, 0);
1138 spin_lock_init(&t->stid_lock);
1139 spin_lock_init(&t->atid_lock);
1140
1141 /*
1142 * Setup the free lists for stid_tab and atid_tab.
1143 */
1144 if (nstids) {
1145 while (--nstids)
1146 t->stid_tab[nstids - 1].next = &t->stid_tab[nstids];
1147 t->sfree = t->stid_tab;
1148 }
1149 if (natids) {
1150 while (--natids)
1151 t->atid_tab[natids - 1].next = &t->atid_tab[natids];
1152 t->afree = t->atid_tab;
1153 }
1154 return 0;
1155}
1156
1157static void free_tid_maps(struct tid_info *t)
1158{
1159 cxgb_free_mem(t->tid_tab);
1160}
1161
1162static inline void add_adapter(struct adapter *adap)
1163{
1164 write_lock_bh(&adapter_list_lock);
1165 list_add_tail(&adap->adapter_list, &adapter_list);
1166 write_unlock_bh(&adapter_list_lock);
1167}
1168
1169static inline void remove_adapter(struct adapter *adap)
1170{
1171 write_lock_bh(&adapter_list_lock);
1172 list_del(&adap->adapter_list);
1173 write_unlock_bh(&adapter_list_lock);
1174}
1175
1176int cxgb3_offload_activate(struct adapter *adapter)
1177{
1178 struct t3cdev *dev = &adapter->tdev;
1179 int natids, err;
1180 struct t3c_data *t;
1181 struct tid_range stid_range, tid_range;
1182 struct mtutab mtutab;
1183 unsigned int l2t_capacity;
1184
1185 t = kcalloc(1, sizeof(*t), GFP_KERNEL);
1186 if (!t)
1187 return -ENOMEM;
1188
1189 err = -EOPNOTSUPP;
1190 if (dev->ctl(dev, GET_TX_MAX_CHUNK, &t->tx_max_chunk) < 0 ||
1191 dev->ctl(dev, GET_MAX_OUTSTANDING_WR, &t->max_wrs) < 0 ||
1192 dev->ctl(dev, GET_L2T_CAPACITY, &l2t_capacity) < 0 ||
1193 dev->ctl(dev, GET_MTUS, &mtutab) < 0 ||
1194 dev->ctl(dev, GET_TID_RANGE, &tid_range) < 0 ||
1195 dev->ctl(dev, GET_STID_RANGE, &stid_range) < 0)
1196 goto out_free;
1197
1198 err = -ENOMEM;
1199 L2DATA(dev) = t3_init_l2t(l2t_capacity);
1200 if (!L2DATA(dev))
1201 goto out_free;
1202
1203 natids = min(tid_range.num / 2, MAX_ATIDS);
1204 err = init_tid_tabs(&t->tid_maps, tid_range.num, natids,
1205 stid_range.num, ATID_BASE, stid_range.base);
1206 if (err)
1207 goto out_free_l2t;
1208
1209 t->mtus = mtutab.mtus;
1210 t->nmtus = mtutab.size;
1211
1212 INIT_WORK(&t->tid_release_task, t3_process_tid_release_list);
1213 spin_lock_init(&t->tid_release_lock);
1214 INIT_LIST_HEAD(&t->list_node);
1215 t->dev = dev;
1216
1217 T3C_DATA(dev) = t;
1218 dev->recv = process_rx;
1219 dev->neigh_update = t3_l2t_update;
1220
1221 /* Register netevent handler once */
1222 if (list_empty(&adapter_list))
1223 register_netevent_notifier(&nb);
1224
1225 add_adapter(adapter);
1226 return 0;
1227
1228out_free_l2t:
1229 t3_free_l2t(L2DATA(dev));
1230 L2DATA(dev) = NULL;
1231out_free:
1232 kfree(t);
1233 return err;
1234}
1235
1236void cxgb3_offload_deactivate(struct adapter *adapter)
1237{
1238 struct t3cdev *tdev = &adapter->tdev;
1239 struct t3c_data *t = T3C_DATA(tdev);
1240
1241 remove_adapter(adapter);
1242 if (list_empty(&adapter_list))
1243 unregister_netevent_notifier(&nb);
1244
1245 free_tid_maps(&t->tid_maps);
1246 T3C_DATA(tdev) = NULL;
1247 t3_free_l2t(L2DATA(tdev));
1248 L2DATA(tdev) = NULL;
1249 kfree(t);
1250}
1251
1252static inline void register_tdev(struct t3cdev *tdev)
1253{
1254 static int unit;
1255
1256 mutex_lock(&cxgb3_db_lock);
1257 snprintf(tdev->name, sizeof(tdev->name), "ofld_dev%d", unit++);
1258 list_add_tail(&tdev->ofld_dev_list, &ofld_dev_list);
1259 mutex_unlock(&cxgb3_db_lock);
1260}
1261
1262static inline void unregister_tdev(struct t3cdev *tdev)
1263{
1264 mutex_lock(&cxgb3_db_lock);
1265 list_del(&tdev->ofld_dev_list);
1266 mutex_unlock(&cxgb3_db_lock);
1267}
1268
8f85cd7f
DLR		 1269static inline int adap2type(struct adapter *adapter)
1270{
1271 int type = 0;
1272
1273 switch (adapter->params.rev) {
1274 case T3_REV_A:
1275 type = T3A;
1276 break;
1277 case T3_REV_B:
1278 case T3_REV_B2:
1279 type = T3B;
1280 break;
1281 case T3_REV_C:
1282 type = T3C;
1283 break;
1284 }
1285 return type;
1286}
1287
4d22de3e
DLR		 1288void __devinit cxgb3_adapter_ofld(struct adapter *adapter)
1289{
1290 struct t3cdev *tdev = &adapter->tdev;
1291
1292 INIT_LIST_HEAD(&tdev->ofld_dev_list);
1293
1294 cxgb3_set_dummy_ops(tdev);
1295 tdev->send = t3_offload_tx;
1296 tdev->ctl = cxgb_offload_ctl;
8f85cd7f 1297 tdev->type = adap2type(adapter);
4d22de3e
DLR		 1298
1299 register_tdev(tdev);
1300}
1301
1302void __devexit cxgb3_adapter_unofld(struct adapter *adapter)
1303{
1304 struct t3cdev *tdev = &adapter->tdev;
1305
1306 tdev->recv = NULL;
1307 tdev->neigh_update = NULL;
1308
1309 unregister_tdev(tdev);
1310}
1311
1312void __init cxgb3_offload_init(void)
1313{
1314 int i;
1315
1316 for (i = 0; i < NUM_CPL_CMDS; ++i)
1317 cpl_handlers[i] = do_bad_cpl;
1318
1319 t3_register_cpl_handler(CPL_SMT_WRITE_RPL, do_smt_write_rpl);
1320 t3_register_cpl_handler(CPL_L2T_WRITE_RPL, do_l2t_write_rpl);
b881955b 1321 t3_register_cpl_handler(CPL_RTE_WRITE_RPL, do_rte_write_rpl);
4d22de3e
DLR		 1322 t3_register_cpl_handler(CPL_PASS_OPEN_RPL, do_stid_rpl);
1323 t3_register_cpl_handler(CPL_CLOSE_LISTSRV_RPL, do_stid_rpl);
1324 t3_register_cpl_handler(CPL_PASS_ACCEPT_REQ, do_cr);
1325 t3_register_cpl_handler(CPL_PASS_ESTABLISH, do_hwtid_rpl);
1326 t3_register_cpl_handler(CPL_ABORT_RPL_RSS, do_hwtid_rpl);
1327 t3_register_cpl_handler(CPL_ABORT_RPL, do_hwtid_rpl);
1328 t3_register_cpl_handler(CPL_RX_URG_NOTIFY, do_hwtid_rpl);
1329 t3_register_cpl_handler(CPL_RX_DATA, do_hwtid_rpl);
1330 t3_register_cpl_handler(CPL_TX_DATA_ACK, do_hwtid_rpl);
1331 t3_register_cpl_handler(CPL_TX_DMA_ACK, do_hwtid_rpl);
1332 t3_register_cpl_handler(CPL_ACT_OPEN_RPL, do_act_open_rpl);
1333 t3_register_cpl_handler(CPL_PEER_CLOSE, do_hwtid_rpl);
1334 t3_register_cpl_handler(CPL_CLOSE_CON_RPL, do_hwtid_rpl);
1335 t3_register_cpl_handler(CPL_ABORT_REQ_RSS, do_abort_req_rss);
1336 t3_register_cpl_handler(CPL_ACT_ESTABLISH, do_act_establish);
6cdbd77e
DLR		 1337 t3_register_cpl_handler(CPL_SET_TCB_RPL, do_hwtid_rpl);
1338 t3_register_cpl_handler(CPL_GET_TCB_RPL, do_hwtid_rpl);
4d22de3e
DLR		 1339 t3_register_cpl_handler(CPL_RDMA_TERMINATE, do_term);
1340 t3_register_cpl_handler(CPL_RDMA_EC_STATUS, do_hwtid_rpl);
1341 t3_register_cpl_handler(CPL_TRACE_PKT, do_trace);
1342 t3_register_cpl_handler(CPL_RX_DATA_DDP, do_hwtid_rpl);
1343 t3_register_cpl_handler(CPL_RX_DDP_COMPLETE, do_hwtid_rpl);
1344 t3_register_cpl_handler(CPL_ISCSI_HDR, do_hwtid_rpl);
1345}
Linux kernel - Deliverables
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