Merge git://git.infradead.org/mtd-2.6
[linux-2.6] / drivers / net / netxen / netxen_nic_ctx.c
1 /*
2  * Copyright (C) 2003 - 2008 NetXen, Inc.
3  * All rights reserved.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License
7  * as published by the Free Software Foundation; either version 2
8  * of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18  * MA  02111-1307, USA.
19  *
20  * The full GNU General Public License is included in this distribution
21  * in the file called LICENSE.
22  *
23  * Contact Information:
24  *    info@netxen.com
25  * NetXen,
26  * 3965 Freedom Circle, Fourth floor,
27  * Santa Clara, CA 95054
28  *
29  */
30
31 #include "netxen_nic_hw.h"
32 #include "netxen_nic.h"
33 #include "netxen_nic_phan_reg.h"
34
35 #define NXHAL_VERSION   1
36
37 static int
38 netxen_api_lock(struct netxen_adapter *adapter)
39 {
40         u32 done = 0, timeout = 0;
41
42         for (;;) {
43                 /* Acquire PCIE HW semaphore5 */
44                 netxen_nic_read_w0(adapter,
45                         NETXEN_PCIE_REG(PCIE_SEM5_LOCK), &done);
46
47                 if (done == 1)
48                         break;
49
50                 if (++timeout >= NX_OS_CRB_RETRY_COUNT) {
51                         printk(KERN_ERR "%s: lock timeout.\n", __func__);
52                         return -1;
53                 }
54
55                 msleep(1);
56         }
57
58 #if 0
59         netxen_nic_write_w1(adapter,
60                 NETXEN_API_LOCK_ID, NX_OS_API_LOCK_DRIVER);
61 #endif
62         return 0;
63 }
64
65 static int
66 netxen_api_unlock(struct netxen_adapter *adapter)
67 {
68         u32 val;
69
70         /* Release PCIE HW semaphore5 */
71         netxen_nic_read_w0(adapter,
72                 NETXEN_PCIE_REG(PCIE_SEM5_UNLOCK), &val);
73         return 0;
74 }
75
76 static u32
77 netxen_poll_rsp(struct netxen_adapter *adapter)
78 {
79         u32 rsp = NX_CDRP_RSP_OK;
80         int     timeout = 0;
81
82         do {
83                 /* give atleast 1ms for firmware to respond */
84                 msleep(1);
85
86                 if (++timeout > NX_OS_CRB_RETRY_COUNT)
87                         return NX_CDRP_RSP_TIMEOUT;
88
89                 netxen_nic_read_w1(adapter, NX_CDRP_CRB_OFFSET, &rsp);
90         } while (!NX_CDRP_IS_RSP(rsp));
91
92         return rsp;
93 }
94
95 static u32
96 netxen_issue_cmd(struct netxen_adapter *adapter,
97         u32 pci_fn, u32 version, u32 arg1, u32 arg2, u32 arg3, u32 cmd)
98 {
99         u32 rsp;
100         u32 signature = 0;
101         u32 rcode = NX_RCODE_SUCCESS;
102
103         signature = NX_CDRP_SIGNATURE_MAKE(pci_fn, version);
104
105         /* Acquire semaphore before accessing CRB */
106         if (netxen_api_lock(adapter))
107                 return NX_RCODE_TIMEOUT;
108
109         netxen_nic_write_w1(adapter, NX_SIGN_CRB_OFFSET, signature);
110
111         netxen_nic_write_w1(adapter, NX_ARG1_CRB_OFFSET, arg1);
112
113         netxen_nic_write_w1(adapter, NX_ARG2_CRB_OFFSET, arg2);
114
115         netxen_nic_write_w1(adapter, NX_ARG3_CRB_OFFSET, arg3);
116
117         netxen_nic_write_w1(adapter, NX_CDRP_CRB_OFFSET,
118                         NX_CDRP_FORM_CMD(cmd));
119
120         rsp = netxen_poll_rsp(adapter);
121
122         if (rsp == NX_CDRP_RSP_TIMEOUT) {
123                 printk(KERN_ERR "%s: card response timeout.\n",
124                                 netxen_nic_driver_name);
125
126                 rcode = NX_RCODE_TIMEOUT;
127         } else if (rsp == NX_CDRP_RSP_FAIL) {
128                 netxen_nic_read_w1(adapter, NX_ARG1_CRB_OFFSET, &rcode);
129
130                 printk(KERN_ERR "%s: failed card response code:0x%x\n",
131                                 netxen_nic_driver_name, rcode);
132         }
133
134         /* Release semaphore */
135         netxen_api_unlock(adapter);
136
137         return rcode;
138 }
139
140 int
141 nx_fw_cmd_set_mtu(struct netxen_adapter *adapter, int mtu)
142 {
143         u32 rcode = NX_RCODE_SUCCESS;
144         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx[0];
145
146         if (recv_ctx->state == NX_HOST_CTX_STATE_ACTIVE)
147                 rcode = netxen_issue_cmd(adapter,
148                                 adapter->ahw.pci_func,
149                                 NXHAL_VERSION,
150                                 recv_ctx->context_id,
151                                 mtu,
152                                 0,
153                                 NX_CDRP_CMD_SET_MTU);
154
155         if (rcode != NX_RCODE_SUCCESS)
156                 return -EIO;
157
158         return 0;
159 }
160
161 static int
162 nx_fw_cmd_create_rx_ctx(struct netxen_adapter *adapter)
163 {
164         void *addr;
165         nx_hostrq_rx_ctx_t *prq;
166         nx_cardrsp_rx_ctx_t *prsp;
167         nx_hostrq_rds_ring_t *prq_rds;
168         nx_hostrq_sds_ring_t *prq_sds;
169         nx_cardrsp_rds_ring_t *prsp_rds;
170         nx_cardrsp_sds_ring_t *prsp_sds;
171         struct nx_host_rds_ring *rds_ring;
172
173         dma_addr_t hostrq_phys_addr, cardrsp_phys_addr;
174         u64 phys_addr;
175
176         int i, nrds_rings, nsds_rings;
177         size_t rq_size, rsp_size;
178         u32 cap, reg, val;
179
180         int err;
181
182         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx[0];
183
184         /* only one sds ring for now */
185         nrds_rings = adapter->max_rds_rings;
186         nsds_rings = 1;
187
188         rq_size =
189                 SIZEOF_HOSTRQ_RX(nx_hostrq_rx_ctx_t, nrds_rings, nsds_rings);
190         rsp_size =
191                 SIZEOF_CARDRSP_RX(nx_cardrsp_rx_ctx_t, nrds_rings, nsds_rings);
192
193         addr = pci_alloc_consistent(adapter->pdev,
194                                 rq_size, &hostrq_phys_addr);
195         if (addr == NULL)
196                 return -ENOMEM;
197         prq = (nx_hostrq_rx_ctx_t *)addr;
198
199         addr = pci_alloc_consistent(adapter->pdev,
200                         rsp_size, &cardrsp_phys_addr);
201         if (addr == NULL) {
202                 err = -ENOMEM;
203                 goto out_free_rq;
204         }
205         prsp = (nx_cardrsp_rx_ctx_t *)addr;
206
207         prq->host_rsp_dma_addr = cpu_to_le64(cardrsp_phys_addr);
208
209         cap = (NX_CAP0_LEGACY_CONTEXT | NX_CAP0_LEGACY_MN);
210         cap |= (NX_CAP0_JUMBO_CONTIGUOUS | NX_CAP0_LRO_CONTIGUOUS);
211
212         prq->capabilities[0] = cpu_to_le32(cap);
213         prq->host_int_crb_mode =
214                 cpu_to_le32(NX_HOST_INT_CRB_MODE_SHARED);
215         prq->host_rds_crb_mode =
216                 cpu_to_le32(NX_HOST_RDS_CRB_MODE_UNIQUE);
217
218         prq->num_rds_rings = cpu_to_le16(nrds_rings);
219         prq->num_sds_rings = cpu_to_le16(nsds_rings);
220         prq->rds_ring_offset = cpu_to_le32(0);
221
222         val = le32_to_cpu(prq->rds_ring_offset) +
223                 (sizeof(nx_hostrq_rds_ring_t) * nrds_rings);
224         prq->sds_ring_offset = cpu_to_le32(val);
225
226         prq_rds = (nx_hostrq_rds_ring_t *)(prq->data +
227                         le32_to_cpu(prq->rds_ring_offset));
228
229         for (i = 0; i < nrds_rings; i++) {
230
231                 rds_ring = &recv_ctx->rds_rings[i];
232
233                 prq_rds[i].host_phys_addr = cpu_to_le64(rds_ring->phys_addr);
234                 prq_rds[i].ring_size = cpu_to_le32(rds_ring->max_rx_desc_count);
235                 prq_rds[i].ring_kind = cpu_to_le32(i);
236                 prq_rds[i].buff_size = cpu_to_le64(rds_ring->dma_size);
237         }
238
239         prq_sds = (nx_hostrq_sds_ring_t *)(prq->data +
240                         le32_to_cpu(prq->sds_ring_offset));
241
242         prq_sds[0].host_phys_addr =
243                 cpu_to_le64(recv_ctx->rcv_status_desc_phys_addr);
244         prq_sds[0].ring_size = cpu_to_le32(adapter->max_rx_desc_count);
245         /* only one msix vector for now */
246         prq_sds[0].msi_index = cpu_to_le16(0);
247
248         phys_addr = hostrq_phys_addr;
249         err = netxen_issue_cmd(adapter,
250                         adapter->ahw.pci_func,
251                         NXHAL_VERSION,
252                         (u32)(phys_addr >> 32),
253                         (u32)(phys_addr & 0xffffffff),
254                         rq_size,
255                         NX_CDRP_CMD_CREATE_RX_CTX);
256         if (err) {
257                 printk(KERN_WARNING
258                         "Failed to create rx ctx in firmware%d\n", err);
259                 goto out_free_rsp;
260         }
261
262
263         prsp_rds = ((nx_cardrsp_rds_ring_t *)
264                          &prsp->data[le32_to_cpu(prsp->rds_ring_offset)]);
265
266         for (i = 0; i < le16_to_cpu(prsp->num_rds_rings); i++) {
267                 rds_ring = &recv_ctx->rds_rings[i];
268
269                 reg = le32_to_cpu(prsp_rds[i].host_producer_crb);
270                 rds_ring->crb_rcv_producer = NETXEN_NIC_REG(reg - 0x200);
271         }
272
273         prsp_sds = ((nx_cardrsp_sds_ring_t *)
274                         &prsp->data[le32_to_cpu(prsp->sds_ring_offset)]);
275         reg = le32_to_cpu(prsp_sds[0].host_consumer_crb);
276         recv_ctx->crb_sts_consumer = NETXEN_NIC_REG(reg - 0x200);
277
278         reg = le32_to_cpu(prsp_sds[0].interrupt_crb);
279         adapter->crb_intr_mask = NETXEN_NIC_REG(reg - 0x200);
280
281         recv_ctx->state = le32_to_cpu(prsp->host_ctx_state);
282         recv_ctx->context_id = le16_to_cpu(prsp->context_id);
283         recv_ctx->virt_port = prsp->virt_port;
284
285 out_free_rsp:
286         pci_free_consistent(adapter->pdev, rsp_size, prsp, cardrsp_phys_addr);
287 out_free_rq:
288         pci_free_consistent(adapter->pdev, rq_size, prq, hostrq_phys_addr);
289         return err;
290 }
291
292 static void
293 nx_fw_cmd_destroy_rx_ctx(struct netxen_adapter *adapter)
294 {
295         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx[0];
296
297         if (netxen_issue_cmd(adapter,
298                         adapter->ahw.pci_func,
299                         NXHAL_VERSION,
300                         recv_ctx->context_id,
301                         NX_DESTROY_CTX_RESET,
302                         0,
303                         NX_CDRP_CMD_DESTROY_RX_CTX)) {
304
305                 printk(KERN_WARNING
306                         "%s: Failed to destroy rx ctx in firmware\n",
307                         netxen_nic_driver_name);
308         }
309 }
310
311 static int
312 nx_fw_cmd_create_tx_ctx(struct netxen_adapter *adapter)
313 {
314         nx_hostrq_tx_ctx_t      *prq;
315         nx_hostrq_cds_ring_t    *prq_cds;
316         nx_cardrsp_tx_ctx_t     *prsp;
317         void    *rq_addr, *rsp_addr;
318         size_t  rq_size, rsp_size;
319         u32     temp;
320         int     err = 0;
321         u64     offset, phys_addr;
322         dma_addr_t      rq_phys_addr, rsp_phys_addr;
323
324         rq_size = SIZEOF_HOSTRQ_TX(nx_hostrq_tx_ctx_t);
325         rq_addr = pci_alloc_consistent(adapter->pdev,
326                 rq_size, &rq_phys_addr);
327         if (!rq_addr)
328                 return -ENOMEM;
329
330         rsp_size = SIZEOF_CARDRSP_TX(nx_cardrsp_tx_ctx_t);
331         rsp_addr = pci_alloc_consistent(adapter->pdev,
332                 rsp_size, &rsp_phys_addr);
333         if (!rsp_addr) {
334                 err = -ENOMEM;
335                 goto out_free_rq;
336         }
337
338         memset(rq_addr, 0, rq_size);
339         prq = (nx_hostrq_tx_ctx_t *)rq_addr;
340
341         memset(rsp_addr, 0, rsp_size);
342         prsp = (nx_cardrsp_tx_ctx_t *)rsp_addr;
343
344         prq->host_rsp_dma_addr = cpu_to_le64(rsp_phys_addr);
345
346         temp = (NX_CAP0_LEGACY_CONTEXT | NX_CAP0_LEGACY_MN | NX_CAP0_LSO);
347         prq->capabilities[0] = cpu_to_le32(temp);
348
349         prq->host_int_crb_mode =
350                 cpu_to_le32(NX_HOST_INT_CRB_MODE_SHARED);
351
352         prq->interrupt_ctl = 0;
353         prq->msi_index = 0;
354
355         prq->dummy_dma_addr = cpu_to_le64(adapter->dummy_dma.phys_addr);
356
357         offset = adapter->ctx_desc_phys_addr+sizeof(struct netxen_ring_ctx);
358         prq->cmd_cons_dma_addr = cpu_to_le64(offset);
359
360         prq_cds = &prq->cds_ring;
361
362         prq_cds->host_phys_addr =
363                 cpu_to_le64(adapter->ahw.cmd_desc_phys_addr);
364
365         prq_cds->ring_size = cpu_to_le32(adapter->max_tx_desc_count);
366
367         phys_addr = rq_phys_addr;
368         err = netxen_issue_cmd(adapter,
369                         adapter->ahw.pci_func,
370                         NXHAL_VERSION,
371                         (u32)(phys_addr >> 32),
372                         ((u32)phys_addr & 0xffffffff),
373                         rq_size,
374                         NX_CDRP_CMD_CREATE_TX_CTX);
375
376         if (err == NX_RCODE_SUCCESS) {
377                 temp = le32_to_cpu(prsp->cds_ring.host_producer_crb);
378                 adapter->crb_addr_cmd_producer =
379                         NETXEN_NIC_REG(temp - 0x200);
380 #if 0
381                 adapter->tx_state =
382                         le32_to_cpu(prsp->host_ctx_state);
383 #endif
384                 adapter->tx_context_id =
385                         le16_to_cpu(prsp->context_id);
386         } else {
387                 printk(KERN_WARNING
388                         "Failed to create tx ctx in firmware%d\n", err);
389                 err = -EIO;
390         }
391
392         pci_free_consistent(adapter->pdev, rsp_size, rsp_addr, rsp_phys_addr);
393
394 out_free_rq:
395         pci_free_consistent(adapter->pdev, rq_size, rq_addr, rq_phys_addr);
396
397         return err;
398 }
399
400 static void
401 nx_fw_cmd_destroy_tx_ctx(struct netxen_adapter *adapter)
402 {
403         if (netxen_issue_cmd(adapter,
404                         adapter->ahw.pci_func,
405                         NXHAL_VERSION,
406                         adapter->tx_context_id,
407                         NX_DESTROY_CTX_RESET,
408                         0,
409                         NX_CDRP_CMD_DESTROY_TX_CTX)) {
410
411                 printk(KERN_WARNING
412                         "%s: Failed to destroy tx ctx in firmware\n",
413                         netxen_nic_driver_name);
414         }
415 }
416
417 static u64 ctx_addr_sig_regs[][3] = {
418         {NETXEN_NIC_REG(0x188), NETXEN_NIC_REG(0x18c), NETXEN_NIC_REG(0x1c0)},
419         {NETXEN_NIC_REG(0x190), NETXEN_NIC_REG(0x194), NETXEN_NIC_REG(0x1c4)},
420         {NETXEN_NIC_REG(0x198), NETXEN_NIC_REG(0x19c), NETXEN_NIC_REG(0x1c8)},
421         {NETXEN_NIC_REG(0x1a0), NETXEN_NIC_REG(0x1a4), NETXEN_NIC_REG(0x1cc)}
422 };
423
424 #define CRB_CTX_ADDR_REG_LO(FUNC_ID)    (ctx_addr_sig_regs[FUNC_ID][0])
425 #define CRB_CTX_ADDR_REG_HI(FUNC_ID)    (ctx_addr_sig_regs[FUNC_ID][2])
426 #define CRB_CTX_SIGNATURE_REG(FUNC_ID)  (ctx_addr_sig_regs[FUNC_ID][1])
427
428 #define lower32(x)      ((u32)((x) & 0xffffffff))
429 #define upper32(x)      ((u32)(((u64)(x) >> 32) & 0xffffffff))
430
431 static struct netxen_recv_crb recv_crb_registers[] = {
432         /* Instance 0 */
433         {
434                 /* crb_rcv_producer: */
435                 {
436                         NETXEN_NIC_REG(0x100),
437                         /* Jumbo frames */
438                         NETXEN_NIC_REG(0x110),
439                         /* LRO */
440                         NETXEN_NIC_REG(0x120)
441                 },
442                 /* crb_sts_consumer: */
443                 NETXEN_NIC_REG(0x138),
444         },
445         /* Instance 1 */
446         {
447                 /* crb_rcv_producer: */
448                 {
449                         NETXEN_NIC_REG(0x144),
450                         /* Jumbo frames */
451                         NETXEN_NIC_REG(0x154),
452                         /* LRO */
453                         NETXEN_NIC_REG(0x164)
454                 },
455                 /* crb_sts_consumer: */
456                 NETXEN_NIC_REG(0x17c),
457         },
458         /* Instance 2 */
459         {
460                 /* crb_rcv_producer: */
461                 {
462                         NETXEN_NIC_REG(0x1d8),
463                         /* Jumbo frames */
464                         NETXEN_NIC_REG(0x1f8),
465                         /* LRO */
466                         NETXEN_NIC_REG(0x208)
467                 },
468                 /* crb_sts_consumer: */
469                 NETXEN_NIC_REG(0x220),
470         },
471         /* Instance 3 */
472         {
473                 /* crb_rcv_producer: */
474                 {
475                         NETXEN_NIC_REG(0x22c),
476                         /* Jumbo frames */
477                         NETXEN_NIC_REG(0x23c),
478                         /* LRO */
479                         NETXEN_NIC_REG(0x24c)
480                 },
481                 /* crb_sts_consumer: */
482                 NETXEN_NIC_REG(0x264),
483         },
484 };
485
486 static int
487 netxen_init_old_ctx(struct netxen_adapter *adapter)
488 {
489         struct netxen_recv_context *recv_ctx;
490         struct nx_host_rds_ring *rds_ring;
491         int ctx, ring;
492         int func_id = adapter->portnum;
493
494         adapter->ctx_desc->cmd_ring_addr =
495                 cpu_to_le64(adapter->ahw.cmd_desc_phys_addr);
496         adapter->ctx_desc->cmd_ring_size =
497                 cpu_to_le32(adapter->max_tx_desc_count);
498
499         for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
500                 recv_ctx = &adapter->recv_ctx[ctx];
501
502                 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
503                         rds_ring = &recv_ctx->rds_rings[ring];
504
505                         adapter->ctx_desc->rcv_ctx[ring].rcv_ring_addr =
506                                 cpu_to_le64(rds_ring->phys_addr);
507                         adapter->ctx_desc->rcv_ctx[ring].rcv_ring_size =
508                                 cpu_to_le32(rds_ring->max_rx_desc_count);
509                 }
510                 adapter->ctx_desc->sts_ring_addr =
511                         cpu_to_le64(recv_ctx->rcv_status_desc_phys_addr);
512                 adapter->ctx_desc->sts_ring_size =
513                         cpu_to_le32(adapter->max_rx_desc_count);
514         }
515
516         adapter->pci_write_normalize(adapter, CRB_CTX_ADDR_REG_LO(func_id),
517                         lower32(adapter->ctx_desc_phys_addr));
518         adapter->pci_write_normalize(adapter, CRB_CTX_ADDR_REG_HI(func_id),
519                         upper32(adapter->ctx_desc_phys_addr));
520         adapter->pci_write_normalize(adapter, CRB_CTX_SIGNATURE_REG(func_id),
521                         NETXEN_CTX_SIGNATURE | func_id);
522         return 0;
523 }
524
525 static uint32_t sw_int_mask[4] = {
526         CRB_SW_INT_MASK_0, CRB_SW_INT_MASK_1,
527         CRB_SW_INT_MASK_2, CRB_SW_INT_MASK_3
528 };
529
530 int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
531 {
532         struct netxen_hardware_context *hw = &adapter->ahw;
533         u32 state = 0;
534         void *addr;
535         int err = 0;
536         int ctx, ring;
537         struct netxen_recv_context *recv_ctx;
538         struct nx_host_rds_ring *rds_ring;
539
540         err = netxen_receive_peg_ready(adapter);
541         if (err) {
542                 printk(KERN_ERR "Rcv Peg initialization not complete:%x.\n",
543                                 state);
544                 return err;
545         }
546
547         addr = pci_alloc_consistent(adapter->pdev,
548                         sizeof(struct netxen_ring_ctx) + sizeof(uint32_t),
549                         &adapter->ctx_desc_phys_addr);
550
551         if (addr == NULL) {
552                 DPRINTK(ERR, "failed to allocate hw context\n");
553                 return -ENOMEM;
554         }
555         memset(addr, 0, sizeof(struct netxen_ring_ctx));
556         adapter->ctx_desc = (struct netxen_ring_ctx *)addr;
557         adapter->ctx_desc->ctx_id = cpu_to_le32(adapter->portnum);
558         adapter->ctx_desc->cmd_consumer_offset =
559                 cpu_to_le64(adapter->ctx_desc_phys_addr +
560                         sizeof(struct netxen_ring_ctx));
561         adapter->cmd_consumer =
562                 (__le32 *)(((char *)addr) + sizeof(struct netxen_ring_ctx));
563
564         /* cmd desc ring */
565         addr = pci_alloc_consistent(adapter->pdev,
566                         sizeof(struct cmd_desc_type0) *
567                         adapter->max_tx_desc_count,
568                         &hw->cmd_desc_phys_addr);
569
570         if (addr == NULL) {
571                 printk(KERN_ERR "%s failed to allocate tx desc ring\n",
572                                 netxen_nic_driver_name);
573                 return -ENOMEM;
574         }
575
576         hw->cmd_desc_head = (struct cmd_desc_type0 *)addr;
577
578         for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
579                 recv_ctx = &adapter->recv_ctx[ctx];
580
581                 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
582                         /* rx desc ring */
583                         rds_ring = &recv_ctx->rds_rings[ring];
584                         addr = pci_alloc_consistent(adapter->pdev,
585                                         RCV_DESC_RINGSIZE,
586                                         &rds_ring->phys_addr);
587                         if (addr == NULL) {
588                                 printk(KERN_ERR "%s failed to allocate rx "
589                                         "desc ring[%d]\n",
590                                         netxen_nic_driver_name, ring);
591                                 err = -ENOMEM;
592                                 goto err_out_free;
593                         }
594                         rds_ring->desc_head = (struct rcv_desc *)addr;
595
596                         if (adapter->fw_major < 4)
597                                 rds_ring->crb_rcv_producer =
598                                         recv_crb_registers[adapter->portnum].
599                                         crb_rcv_producer[ring];
600                 }
601
602                 /* status desc ring */
603                 addr = pci_alloc_consistent(adapter->pdev,
604                                 STATUS_DESC_RINGSIZE,
605                                 &recv_ctx->rcv_status_desc_phys_addr);
606                 if (addr == NULL) {
607                         printk(KERN_ERR "%s failed to allocate sts desc ring\n",
608                                         netxen_nic_driver_name);
609                         err = -ENOMEM;
610                         goto err_out_free;
611                 }
612                 recv_ctx->rcv_status_desc_head = (struct status_desc *)addr;
613
614                 if (adapter->fw_major < 4)
615                         recv_ctx->crb_sts_consumer =
616                                 recv_crb_registers[adapter->portnum].
617                                 crb_sts_consumer;
618         }
619
620         if (adapter->fw_major >= 4) {
621                 adapter->intr_scheme = INTR_SCHEME_PERPORT;
622                 adapter->msi_mode = MSI_MODE_MULTIFUNC;
623
624                 err = nx_fw_cmd_create_rx_ctx(adapter);
625                 if (err)
626                         goto err_out_free;
627                 err = nx_fw_cmd_create_tx_ctx(adapter);
628                 if (err)
629                         goto err_out_free;
630         } else {
631
632                 adapter->intr_scheme = adapter->pci_read_normalize(adapter,
633                                 CRB_NIC_CAPABILITIES_FW);
634                 adapter->msi_mode = adapter->pci_read_normalize(adapter,
635                                 CRB_NIC_MSI_MODE_FW);
636                 adapter->crb_intr_mask = sw_int_mask[adapter->portnum];
637
638                 err = netxen_init_old_ctx(adapter);
639                 if (err) {
640                         netxen_free_hw_resources(adapter);
641                         return err;
642                 }
643
644         }
645
646         return 0;
647
648 err_out_free:
649         netxen_free_hw_resources(adapter);
650         return err;
651 }
652
653 void netxen_free_hw_resources(struct netxen_adapter *adapter)
654 {
655         struct netxen_recv_context *recv_ctx;
656         struct nx_host_rds_ring *rds_ring;
657         int ctx, ring;
658
659         if (adapter->fw_major >= 4) {
660                 nx_fw_cmd_destroy_tx_ctx(adapter);
661                 nx_fw_cmd_destroy_rx_ctx(adapter);
662         }
663
664         if (adapter->ctx_desc != NULL) {
665                 pci_free_consistent(adapter->pdev,
666                                 sizeof(struct netxen_ring_ctx) +
667                                 sizeof(uint32_t),
668                                 adapter->ctx_desc,
669                                 adapter->ctx_desc_phys_addr);
670                 adapter->ctx_desc = NULL;
671         }
672
673         if (adapter->ahw.cmd_desc_head != NULL) {
674                 pci_free_consistent(adapter->pdev,
675                                 sizeof(struct cmd_desc_type0) *
676                                 adapter->max_tx_desc_count,
677                                 adapter->ahw.cmd_desc_head,
678                                 adapter->ahw.cmd_desc_phys_addr);
679                 adapter->ahw.cmd_desc_head = NULL;
680         }
681
682         for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
683                 recv_ctx = &adapter->recv_ctx[ctx];
684                 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
685                         rds_ring = &recv_ctx->rds_rings[ring];
686
687                         if (rds_ring->desc_head != NULL) {
688                                 pci_free_consistent(adapter->pdev,
689                                                 RCV_DESC_RINGSIZE,
690                                                 rds_ring->desc_head,
691                                                 rds_ring->phys_addr);
692                                 rds_ring->desc_head = NULL;
693                         }
694                 }
695
696                 if (recv_ctx->rcv_status_desc_head != NULL) {
697                         pci_free_consistent(adapter->pdev,
698                                         STATUS_DESC_RINGSIZE,
699                                         recv_ctx->rcv_status_desc_head,
700                                         recv_ctx->rcv_status_desc_phys_addr);
701                         recv_ctx->rcv_status_desc_head = NULL;
702                 }
703         }
704 }
705