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1/*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * Copyright (C) 2009 - QLogic Corporation.
4 * All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 *
19 * The full GNU General Public License is included in this distribution
20 * in the file called "COPYING".
21 *
22 */
23
24#include <linux/slab.h>
25#include <linux/vmalloc.h>
26#include <linux/interrupt.h>
27#include "netxen_nic_hw.h"
28
29#include "netxen_nic.h"
30
31#include <linux/dma-mapping.h>
32#include <linux/if_vlan.h>
33#include <net/ip.h>
34#include <linux/ipv6.h>
35#include <linux/inetdevice.h>
36#include <linux/sysfs.h>
37#include <linux/aer.h>
38
39MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
40MODULE_LICENSE("GPL");
41MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
42MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
43
44char netxen_nic_driver_name[] = "netxen_nic";
45static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
46 NETXEN_NIC_LINUX_VERSIONID;
47
48static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
49
50/* Default to restricted 1G auto-neg mode */
51static int wol_port_mode = 5;
52
53static int use_msi = 1;
54
55static int use_msi_x = 1;
56
57static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
58module_param(auto_fw_reset, int, 0644);
59MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
60
61static int netxen_nic_probe(struct pci_dev *pdev,
62 const struct pci_device_id *ent);
63static void netxen_nic_remove(struct pci_dev *pdev);
64static int netxen_nic_open(struct net_device *netdev);
65static int netxen_nic_close(struct net_device *netdev);
66static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
67 struct net_device *);
68static void netxen_tx_timeout(struct net_device *netdev);
69static void netxen_tx_timeout_task(struct work_struct *work);
70static void netxen_fw_poll_work(struct work_struct *work);
71static void netxen_schedule_work(struct netxen_adapter *adapter,
72 work_func_t func, int delay);
73static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
74static int netxen_nic_poll(struct napi_struct *napi, int budget);
75#ifdef CONFIG_NET_POLL_CONTROLLER
76static void netxen_nic_poll_controller(struct net_device *netdev);
77#endif
78
79static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
80static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
81static void netxen_create_diag_entries(struct netxen_adapter *adapter);
82static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
83static int nx_dev_request_aer(struct netxen_adapter *adapter);
84static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
85static int netxen_can_start_firmware(struct netxen_adapter *adapter);
86
87static irqreturn_t netxen_intr(int irq, void *data);
88static irqreturn_t netxen_msi_intr(int irq, void *data);
89static irqreturn_t netxen_msix_intr(int irq, void *data);
90
91static void netxen_free_ip_list(struct netxen_adapter *, bool);
92static void netxen_restore_indev_addr(struct net_device *dev, unsigned long);
93static void netxen_nic_get_stats(struct net_device *dev,
94 struct rtnl_link_stats64 *stats);
95static int netxen_nic_set_mac(struct net_device *netdev, void *p);
96
97/* PCI Device ID Table */
98#define ENTRY(device) \
99 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
100 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
101
102static const struct pci_device_id netxen_pci_tbl[] = {
103 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
104 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
105 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
106 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
107 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
108 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
109 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
110 ENTRY(PCI_DEVICE_ID_NX3031),
111 {0,}
112};
113
114MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
115
116static uint32_t crb_cmd_producer[4] = {
117 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
118 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
119};
120
121void
122netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
123 struct nx_host_tx_ring *tx_ring)
124{
125 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
126}
127
128static uint32_t crb_cmd_consumer[4] = {
129 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
130 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
131};
132
133static inline void
134netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
135 struct nx_host_tx_ring *tx_ring)
136{
137 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
138}
139
140static uint32_t msi_tgt_status[8] = {
141 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
142 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
143 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
144 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
145};
146
147static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
148
149static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
150{
151 struct netxen_adapter *adapter = sds_ring->adapter;
152
153 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
154}
155
156static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
157{
158 struct netxen_adapter *adapter = sds_ring->adapter;
159
160 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
161
162 if (!NETXEN_IS_MSI_FAMILY(adapter))
163 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
164}
165
166static int
167netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
168{
169 int size = sizeof(struct nx_host_sds_ring) * count;
170
171 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
172
173 return recv_ctx->sds_rings == NULL;
174}
175
176static void
177netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
178{
179 kfree(recv_ctx->sds_rings);
180 recv_ctx->sds_rings = NULL;
181}
182
183static int
184netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
185{
186 int ring;
187 struct nx_host_sds_ring *sds_ring;
188 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
189
190 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
191 return -ENOMEM;
192
193 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
194 sds_ring = &recv_ctx->sds_rings[ring];
195 netif_napi_add(netdev, &sds_ring->napi,
196 netxen_nic_poll, NAPI_POLL_WEIGHT);
197 }
198
199 return 0;
200}
201
202static void
203netxen_napi_del(struct netxen_adapter *adapter)
204{
205 int ring;
206 struct nx_host_sds_ring *sds_ring;
207 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
208
209 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
210 sds_ring = &recv_ctx->sds_rings[ring];
211 netif_napi_del(&sds_ring->napi);
212 }
213
214 netxen_free_sds_rings(&adapter->recv_ctx);
215}
216
217static void
218netxen_napi_enable(struct netxen_adapter *adapter)
219{
220 int ring;
221 struct nx_host_sds_ring *sds_ring;
222 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
223
224 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
225 sds_ring = &recv_ctx->sds_rings[ring];
226 napi_enable(&sds_ring->napi);
227 netxen_nic_enable_int(sds_ring);
228 }
229}
230
231static void
232netxen_napi_disable(struct netxen_adapter *adapter)
233{
234 int ring;
235 struct nx_host_sds_ring *sds_ring;
236 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
237
238 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
239 sds_ring = &recv_ctx->sds_rings[ring];
240 netxen_nic_disable_int(sds_ring);
241 napi_synchronize(&sds_ring->napi);
242 napi_disable(&sds_ring->napi);
243 }
244}
245
246static int nx_set_dma_mask(struct netxen_adapter *adapter)
247{
248 struct pci_dev *pdev = adapter->pdev;
249 uint64_t mask, cmask;
250
251 adapter->pci_using_dac = 0;
252
253 mask = DMA_BIT_MASK(32);
254 cmask = DMA_BIT_MASK(32);
255
256 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
257#ifndef CONFIG_IA64
258 mask = DMA_BIT_MASK(35);
259#endif
260 } else {
261 mask = DMA_BIT_MASK(39);
262 cmask = mask;
263 }
264
265 if (pci_set_dma_mask(pdev, mask) == 0 &&
266 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
267 adapter->pci_using_dac = 1;
268 return 0;
269 }
270
271 return -EIO;
272}
273
274/* Update addressable range if firmware supports it */
275static int
276nx_update_dma_mask(struct netxen_adapter *adapter)
277{
278 int change, shift, err;
279 uint64_t mask, old_mask, old_cmask;
280 struct pci_dev *pdev = adapter->pdev;
281
282 change = 0;
283
284 shift = NXRD32(adapter, CRB_DMA_SHIFT);
285 if (shift > 32)
286 return 0;
287
288 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
289 change = 1;
290 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
291 change = 1;
292
293 if (change) {
294 old_mask = pdev->dma_mask;
295 old_cmask = pdev->dev.coherent_dma_mask;
296
297 mask = DMA_BIT_MASK(32+shift);
298
299 err = pci_set_dma_mask(pdev, mask);
300 if (err)
301 goto err_out;
302
303 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
304
305 err = pci_set_consistent_dma_mask(pdev, mask);
306 if (err)
307 goto err_out;
308 }
309 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
310 }
311
312 return 0;
313
314err_out:
315 pci_set_dma_mask(pdev, old_mask);
316 pci_set_consistent_dma_mask(pdev, old_cmask);
317 return err;
318}
319
320static int
321netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
322{
323 u32 val, timeout;
324
325 if (first_boot == 0x55555555) {
326 /* This is the first boot after power up */
327 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
328
329 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
330 return 0;
331
332 /* PCI bus master workaround */
333 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
334 if (!(first_boot & 0x4)) {
335 first_boot |= 0x4;
336 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
337 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
338 }
339
340 /* This is the first boot after power up */
341 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
342 if (first_boot != 0x80000f) {
343 /* clear the register for future unloads/loads */
344 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
345 return -EIO;
346 }
347
348 /* Start P2 boot loader */
349 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
350 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
351 timeout = 0;
352 do {
353 msleep(1);
354 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
355
356 if (++timeout > 5000)
357 return -EIO;
358
359 } while (val == NETXEN_BDINFO_MAGIC);
360 }
361 return 0;
362}
363
364static void netxen_set_port_mode(struct netxen_adapter *adapter)
365{
366 u32 val, data;
367
368 val = adapter->ahw.board_type;
369 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
370 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
371 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
372 data = NETXEN_PORT_MODE_802_3_AP;
373 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
374 } else if (port_mode == NETXEN_PORT_MODE_XG) {
375 data = NETXEN_PORT_MODE_XG;
376 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
377 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
378 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
379 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
380 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
381 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
382 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
383 } else {
384 data = NETXEN_PORT_MODE_AUTO_NEG;
385 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
386 }
387
388 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
389 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
390 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
391 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
392 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
393 }
394 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
395 }
396}
397
398#define PCI_CAP_ID_GEN 0x10
399
400static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
401{
402 u32 pdevfuncsave;
403 u32 c8c9value = 0;
404 u32 chicken = 0;
405 u32 control = 0;
406 int i, pos;
407 struct pci_dev *pdev;
408
409 pdev = adapter->pdev;
410
411 chicken = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3));
412 /* clear chicken3.25:24 */
413 chicken &= 0xFCFFFFFF;
414 /*
415 * if gen1 and B0, set F1020 - if gen 2, do nothing
416 * if gen2 set to F1000
417 */
418 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
419 if (pos == 0xC0) {
420 pci_read_config_dword(pdev, pos + 0x10, &control);
421 if ((control & 0x000F0000) != 0x00020000) {
422 /* set chicken3.24 if gen1 */
423 chicken |= 0x01000000;
424 }
425 dev_info(&adapter->pdev->dev, "Gen2 strapping detected\n");
426 c8c9value = 0xF1000;
427 } else {
428 /* set chicken3.24 if gen1 */
429 chicken |= 0x01000000;
430 dev_info(&adapter->pdev->dev, "Gen1 strapping detected\n");
431 if (adapter->ahw.revision_id == NX_P3_B0)
432 c8c9value = 0xF1020;
433 else
434 c8c9value = 0;
435 }
436
437 NXWR32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3), chicken);
438
439 if (!c8c9value)
440 return;
441
442 pdevfuncsave = pdev->devfn;
443 if (pdevfuncsave & 0x07)
444 return;
445
446 for (i = 0; i < 8; i++) {
447 pci_read_config_dword(pdev, pos + 8, &control);
448 pci_read_config_dword(pdev, pos + 8, &control);
449 pci_write_config_dword(pdev, pos + 8, c8c9value);
450 pdev->devfn++;
451 }
452 pdev->devfn = pdevfuncsave;
453}
454
455static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
456{
457 u32 control;
458
459 if (pdev->msix_cap) {
460 pci_read_config_dword(pdev, pdev->msix_cap, &control);
461 if (enable)
462 control |= PCI_MSIX_FLAGS_ENABLE;
463 else
464 control = 0;
465 pci_write_config_dword(pdev, pdev->msix_cap, control);
466 }
467}
468
469static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
470{
471 int i;
472
473 for (i = 0; i < count; i++)
474 adapter->msix_entries[i].entry = i;
475}
476
477static int
478netxen_read_mac_addr(struct netxen_adapter *adapter)
479{
480 int i;
481 unsigned char *p;
482 u64 mac_addr;
483 struct net_device *netdev = adapter->netdev;
484 struct pci_dev *pdev = adapter->pdev;
485
486 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
487 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
488 return -EIO;
489 } else {
490 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
491 return -EIO;
492 }
493
494 p = (unsigned char *)&mac_addr;
495 for (i = 0; i < 6; i++)
496 netdev->dev_addr[i] = *(p + 5 - i);
497
498 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
499
500 /* set station address */
501
502 if (!is_valid_ether_addr(netdev->dev_addr))
503 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
504
505 return 0;
506}
507
508static int netxen_nic_set_mac(struct net_device *netdev, void *p)
509{
510 struct netxen_adapter *adapter = netdev_priv(netdev);
511 struct sockaddr *addr = p;
512
513 if (!is_valid_ether_addr(addr->sa_data))
514 return -EADDRNOTAVAIL;
515
516 if (netif_running(netdev)) {
517 netif_device_detach(netdev);
518 netxen_napi_disable(adapter);
519 }
520
521 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
522 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
523 adapter->macaddr_set(adapter, addr->sa_data);
524
525 if (netif_running(netdev)) {
526 netif_device_attach(netdev);
527 netxen_napi_enable(adapter);
528 }
529 return 0;
530}
531
532static void netxen_set_multicast_list(struct net_device *dev)
533{
534 struct netxen_adapter *adapter = netdev_priv(dev);
535
536 adapter->set_multi(dev);
537}
538
539static netdev_features_t netxen_fix_features(struct net_device *dev,
540 netdev_features_t features)
541{
542 if (!(features & NETIF_F_RXCSUM)) {
543 netdev_info(dev, "disabling LRO as RXCSUM is off\n");
544
545 features &= ~NETIF_F_LRO;
546 }
547
548 return features;
549}
550
551static int netxen_set_features(struct net_device *dev,
552 netdev_features_t features)
553{
554 struct netxen_adapter *adapter = netdev_priv(dev);
555 int hw_lro;
556
557 if (!((dev->features ^ features) & NETIF_F_LRO))
558 return 0;
559
560 hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
561 : NETXEN_NIC_LRO_DISABLED;
562
563 if (netxen_config_hw_lro(adapter, hw_lro))
564 return -EIO;
565
566 if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
567 return -EIO;
568
569 return 0;
570}
571
572static const struct net_device_ops netxen_netdev_ops = {
573 .ndo_open = netxen_nic_open,
574 .ndo_stop = netxen_nic_close,
575 .ndo_start_xmit = netxen_nic_xmit_frame,
576 .ndo_get_stats64 = netxen_nic_get_stats,
577 .ndo_validate_addr = eth_validate_addr,
578 .ndo_set_rx_mode = netxen_set_multicast_list,
579 .ndo_set_mac_address = netxen_nic_set_mac,
580 .ndo_change_mtu = netxen_nic_change_mtu,
581 .ndo_tx_timeout = netxen_tx_timeout,
582 .ndo_fix_features = netxen_fix_features,
583 .ndo_set_features = netxen_set_features,
584#ifdef CONFIG_NET_POLL_CONTROLLER
585 .ndo_poll_controller = netxen_nic_poll_controller,
586#endif
587};
588
589static inline bool netxen_function_zero(struct pci_dev *pdev)
590{
591 return (PCI_FUNC(pdev->devfn) == 0) ? true : false;
592}
593
594static inline void netxen_set_interrupt_mode(struct netxen_adapter *adapter,
595 u32 mode)
596{
597 NXWR32(adapter, NETXEN_INTR_MODE_REG, mode);
598}
599
600static inline u32 netxen_get_interrupt_mode(struct netxen_adapter *adapter)
601{
602 return NXRD32(adapter, NETXEN_INTR_MODE_REG);
603}
604
605static void
606netxen_initialize_interrupt_registers(struct netxen_adapter *adapter)
607{
608 struct netxen_legacy_intr_set *legacy_intrp;
609 u32 tgt_status_reg, int_state_reg;
610
611 if (adapter->ahw.revision_id >= NX_P3_B0)
612 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
613 else
614 legacy_intrp = &legacy_intr[0];
615
616 tgt_status_reg = legacy_intrp->tgt_status_reg;
617 int_state_reg = ISR_INT_STATE_REG;
618
619 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
620 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, tgt_status_reg);
621 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
622 legacy_intrp->tgt_mask_reg);
623 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
624 legacy_intrp->pci_int_reg);
625 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
626
627 if (adapter->ahw.revision_id >= NX_P3_B1)
628 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
629 int_state_reg);
630 else
631 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
632 CRB_INT_VECTOR);
633}
634
635static int netxen_setup_msi_interrupts(struct netxen_adapter *adapter,
636 int num_msix)
637{
638 struct pci_dev *pdev = adapter->pdev;
639 u32 value;
640 int err;
641
642 if (adapter->msix_supported) {
643 netxen_init_msix_entries(adapter, num_msix);
644 err = pci_enable_msix_range(pdev, adapter->msix_entries,
645 num_msix, num_msix);
646 if (err > 0) {
647 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
648 netxen_set_msix_bit(pdev, 1);
649
650 if (adapter->rss_supported)
651 adapter->max_sds_rings = num_msix;
652
653 dev_info(&pdev->dev, "using msi-x interrupts\n");
654 return 0;
655 }
656 /* fall through for msi */
657 }
658
659 if (use_msi && !pci_enable_msi(pdev)) {
660 value = msi_tgt_status[adapter->ahw.pci_func];
661 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
662 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, value);
663 adapter->msix_entries[0].vector = pdev->irq;
664 dev_info(&pdev->dev, "using msi interrupts\n");
665 return 0;
666 }
667
668 dev_err(&pdev->dev, "Failed to acquire MSI-X/MSI interrupt vector\n");
669 return -EIO;
670}
671
672static int netxen_setup_intr(struct netxen_adapter *adapter)
673{
674 struct pci_dev *pdev = adapter->pdev;
675 int num_msix;
676
677 if (adapter->rss_supported)
678 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
679 MSIX_ENTRIES_PER_ADAPTER : 2;
680 else
681 num_msix = 1;
682
683 adapter->max_sds_rings = 1;
684 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
685
686 netxen_initialize_interrupt_registers(adapter);
687 netxen_set_msix_bit(pdev, 0);
688
689 if (netxen_function_zero(pdev)) {
690 if (!netxen_setup_msi_interrupts(adapter, num_msix))
691 netxen_set_interrupt_mode(adapter, NETXEN_MSI_MODE);
692 else
693 netxen_set_interrupt_mode(adapter, NETXEN_INTX_MODE);
694 } else {
695 if (netxen_get_interrupt_mode(adapter) == NETXEN_MSI_MODE &&
696 netxen_setup_msi_interrupts(adapter, num_msix)) {
697 dev_err(&pdev->dev, "Co-existence of MSI-X/MSI and INTx interrupts is not supported\n");
698 return -EIO;
699 }
700 }
701
702 if (!NETXEN_IS_MSI_FAMILY(adapter)) {
703 adapter->msix_entries[0].vector = pdev->irq;
704 dev_info(&pdev->dev, "using legacy interrupts\n");
705 }
706 return 0;
707}
708
709static void
710netxen_teardown_intr(struct netxen_adapter *adapter)
711{
712 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
713 pci_disable_msix(adapter->pdev);
714 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
715 pci_disable_msi(adapter->pdev);
716}
717
718static void
719netxen_cleanup_pci_map(struct netxen_adapter *adapter)
720{
721 if (adapter->ahw.db_base != NULL)
722 iounmap(adapter->ahw.db_base);
723 if (adapter->ahw.pci_base0 != NULL)
724 iounmap(adapter->ahw.pci_base0);
725 if (adapter->ahw.pci_base1 != NULL)
726 iounmap(adapter->ahw.pci_base1);
727 if (adapter->ahw.pci_base2 != NULL)
728 iounmap(adapter->ahw.pci_base2);
729}
730
731static int
732netxen_setup_pci_map(struct netxen_adapter *adapter)
733{
734 void __iomem *db_ptr = NULL;
735
736 resource_size_t mem_base, db_base;
737 unsigned long mem_len, db_len = 0;
738
739 struct pci_dev *pdev = adapter->pdev;
740 int pci_func = adapter->ahw.pci_func;
741 struct netxen_hardware_context *ahw = &adapter->ahw;
742
743 int err = 0;
744
745 /*
746 * Set the CRB window to invalid. If any register in window 0 is
747 * accessed it should set the window to 0 and then reset it to 1.
748 */
749 adapter->ahw.crb_win = -1;
750 adapter->ahw.ocm_win = -1;
751
752 /* remap phys address */
753 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
754 mem_len = pci_resource_len(pdev, 0);
755
756 /* 128 Meg of memory */
757 if (mem_len == NETXEN_PCI_128MB_SIZE) {
758
759 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
760 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
761 SECOND_PAGE_GROUP_SIZE);
762 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
763 THIRD_PAGE_GROUP_SIZE);
764 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
765 ahw->pci_base2 == NULL) {
766 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
767 err = -EIO;
768 goto err_out;
769 }
770
771 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
772
773 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
774
775 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
776 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
777 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
778 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
779 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
780 err = -EIO;
781 goto err_out;
782 }
783
784 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
785
786 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
787 if (ahw->pci_base0 == NULL) {
788 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
789 return -EIO;
790 }
791 ahw->pci_len0 = mem_len;
792 } else {
793 return -EIO;
794 }
795
796 netxen_setup_hwops(adapter);
797
798 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
799
800 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
801 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
802 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
803
804 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
805 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
806 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
807 }
808
809 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
810 goto skip_doorbell;
811
812 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
813 db_len = pci_resource_len(pdev, 4);
814
815 if (db_len == 0) {
816 printk(KERN_ERR "%s: doorbell is disabled\n",
817 netxen_nic_driver_name);
818 err = -EIO;
819 goto err_out;
820 }
821
822 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
823 if (!db_ptr) {
824 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
825 netxen_nic_driver_name);
826 err = -EIO;
827 goto err_out;
828 }
829
830skip_doorbell:
831 adapter->ahw.db_base = db_ptr;
832 adapter->ahw.db_len = db_len;
833 return 0;
834
835err_out:
836 netxen_cleanup_pci_map(adapter);
837 return err;
838}
839
840static void
841netxen_check_options(struct netxen_adapter *adapter)
842{
843 u32 fw_major, fw_minor, fw_build, prev_fw_version;
844 char brd_name[NETXEN_MAX_SHORT_NAME];
845 char serial_num[32];
846 int i, offset, val, err;
847 __le32 *ptr32;
848 struct pci_dev *pdev = adapter->pdev;
849
850 adapter->driver_mismatch = 0;
851
852 ptr32 = (__le32 *)&serial_num;
853 offset = NX_FW_SERIAL_NUM_OFFSET;
854 for (i = 0; i < 8; i++) {
855 err = netxen_rom_fast_read(adapter, offset, &val);
856 if (err) {
857 dev_err(&pdev->dev, "error reading board info\n");
858 adapter->driver_mismatch = 1;
859 return;
860 }
861 ptr32[i] = cpu_to_le32(val);
862 offset += sizeof(u32);
863 }
864
865 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
866 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
867 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
868 prev_fw_version = adapter->fw_version;
869 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
870
871 /* Get FW Mini Coredump template and store it */
872 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
873 if (adapter->mdump.md_template == NULL ||
874 adapter->fw_version > prev_fw_version) {
875 kfree(adapter->mdump.md_template);
876 adapter->mdump.md_template = NULL;
877 err = netxen_setup_minidump(adapter);
878 if (err)
879 dev_err(&adapter->pdev->dev,
880 "Failed to setup minidump rcode = %d\n", err);
881 }
882 }
883
884 if (adapter->portnum == 0) {
885 if (netxen_nic_get_brd_name_by_type(adapter->ahw.board_type,
886 brd_name))
887 strcpy(serial_num, "Unknown");
888
889 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
890 module_name(THIS_MODULE),
891 brd_name, serial_num, adapter->ahw.revision_id);
892 }
893
894 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
895 adapter->driver_mismatch = 1;
896 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
897 fw_major, fw_minor, fw_build);
898 return;
899 }
900
901 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
902 i = NXRD32(adapter, NETXEN_SRE_MISC);
903 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
904 }
905
906 dev_info(&pdev->dev, "Driver v%s, firmware v%d.%d.%d [%s]\n",
907 NETXEN_NIC_LINUX_VERSIONID, fw_major, fw_minor, fw_build,
908 adapter->ahw.cut_through ? "cut-through" : "legacy");
909
910 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
911 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
912
913 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
914 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
915 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
916 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
917 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
918 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
919 }
920
921 adapter->msix_supported = 0;
922 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
923 adapter->msix_supported = !!use_msi_x;
924 adapter->rss_supported = !!use_msi_x;
925 } else {
926 u32 flashed_ver = 0;
927 netxen_rom_fast_read(adapter,
928 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
929 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
930
931 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
932 switch (adapter->ahw.board_type) {
933 case NETXEN_BRDTYPE_P2_SB31_10G:
934 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
935 adapter->msix_supported = !!use_msi_x;
936 adapter->rss_supported = !!use_msi_x;
937 break;
938 default:
939 break;
940 }
941 }
942 }
943
944 adapter->num_txd = MAX_CMD_DESCRIPTORS;
945
946 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
947 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
948 adapter->max_rds_rings = 3;
949 } else {
950 adapter->num_lro_rxd = 0;
951 adapter->max_rds_rings = 2;
952 }
953}
954
955static int
956netxen_start_firmware(struct netxen_adapter *adapter)
957{
958 int val, err, first_boot;
959 struct pci_dev *pdev = adapter->pdev;
960
961 /* required for NX2031 dummy dma */
962 err = nx_set_dma_mask(adapter);
963 if (err)
964 return err;
965
966 err = netxen_can_start_firmware(adapter);
967
968 if (err < 0)
969 return err;
970
971 if (!err)
972 goto wait_init;
973
974 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
975
976 err = netxen_check_hw_init(adapter, first_boot);
977 if (err) {
978 dev_err(&pdev->dev, "error in init HW init sequence\n");
979 return err;
980 }
981
982 netxen_request_firmware(adapter);
983
984 err = netxen_need_fw_reset(adapter);
985 if (err < 0)
986 goto err_out;
987 if (err == 0)
988 goto pcie_strap_init;
989
990 if (first_boot != 0x55555555) {
991 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
992 netxen_pinit_from_rom(adapter);
993 msleep(1);
994 }
995
996 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
997 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
998 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
999
1000 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1001 netxen_set_port_mode(adapter);
1002
1003 err = netxen_load_firmware(adapter);
1004 if (err)
1005 goto err_out;
1006
1007 netxen_release_firmware(adapter);
1008
1009 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1010
1011 /* Initialize multicast addr pool owners */
1012 val = 0x7654;
1013 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
1014 val |= 0x0f000000;
1015 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
1016
1017 }
1018
1019 err = netxen_init_dummy_dma(adapter);
1020 if (err)
1021 goto err_out;
1022
1023 /*
1024 * Tell the hardware our version number.
1025 */
1026 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
1027 | ((_NETXEN_NIC_LINUX_MINOR << 8))
1028 | (_NETXEN_NIC_LINUX_SUBVERSION);
1029 NXWR32(adapter, CRB_DRIVER_VERSION, val);
1030
1031pcie_strap_init:
1032 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1033 netxen_pcie_strap_init(adapter);
1034
1035wait_init:
1036 /* Handshake with the card before we register the devices. */
1037 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
1038 if (err) {
1039 netxen_free_dummy_dma(adapter);
1040 goto err_out;
1041 }
1042
1043 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
1044
1045 nx_update_dma_mask(adapter);
1046
1047 netxen_check_options(adapter);
1048
1049 adapter->need_fw_reset = 0;
1050
1051 /* fall through and release firmware */
1052
1053err_out:
1054 netxen_release_firmware(adapter);
1055 return err;
1056}
1057
1058static int
1059netxen_nic_request_irq(struct netxen_adapter *adapter)
1060{
1061 irq_handler_t handler;
1062 struct nx_host_sds_ring *sds_ring;
1063 int err, ring;
1064
1065 unsigned long flags = 0;
1066 struct net_device *netdev = adapter->netdev;
1067 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1068
1069 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1070 handler = netxen_msix_intr;
1071 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1072 handler = netxen_msi_intr;
1073 else {
1074 flags |= IRQF_SHARED;
1075 handler = netxen_intr;
1076 }
1077 adapter->irq = netdev->irq;
1078
1079 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1080 sds_ring = &recv_ctx->sds_rings[ring];
1081 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
1082 err = request_irq(sds_ring->irq, handler,
1083 flags, sds_ring->name, sds_ring);
1084 if (err)
1085 return err;
1086 }
1087
1088 return 0;
1089}
1090
1091static void
1092netxen_nic_free_irq(struct netxen_adapter *adapter)
1093{
1094 int ring;
1095 struct nx_host_sds_ring *sds_ring;
1096
1097 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1098
1099 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1100 sds_ring = &recv_ctx->sds_rings[ring];
1101 free_irq(sds_ring->irq, sds_ring);
1102 }
1103}
1104
1105static void
1106netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
1107{
1108 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
1109 adapter->coal.normal.data.rx_time_us =
1110 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
1111 adapter->coal.normal.data.rx_packets =
1112 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
1113 adapter->coal.normal.data.tx_time_us =
1114 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
1115 adapter->coal.normal.data.tx_packets =
1116 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
1117}
1118
1119/* with rtnl_lock */
1120static int
1121__netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1122{
1123 int err;
1124
1125 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1126 return -EIO;
1127
1128 err = adapter->init_port(adapter, adapter->physical_port);
1129 if (err) {
1130 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1131 netxen_nic_driver_name, adapter->portnum);
1132 return err;
1133 }
1134 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1135 adapter->macaddr_set(adapter, adapter->mac_addr);
1136
1137 adapter->set_multi(netdev);
1138 adapter->set_mtu(adapter, netdev->mtu);
1139
1140 adapter->ahw.linkup = 0;
1141
1142 if (adapter->max_sds_rings > 1)
1143 netxen_config_rss(adapter, 1);
1144
1145 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1146 netxen_config_intr_coalesce(adapter);
1147
1148 if (netdev->features & NETIF_F_LRO)
1149 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1150
1151 netxen_napi_enable(adapter);
1152
1153 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1154 netxen_linkevent_request(adapter, 1);
1155 else
1156 netxen_nic_set_link_parameters(adapter);
1157
1158 set_bit(__NX_DEV_UP, &adapter->state);
1159 return 0;
1160}
1161
1162/* Usage: During resume and firmware recovery module.*/
1163
1164static inline int
1165netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1166{
1167 int err = 0;
1168
1169 rtnl_lock();
1170 if (netif_running(netdev))
1171 err = __netxen_nic_up(adapter, netdev);
1172 rtnl_unlock();
1173
1174 return err;
1175}
1176
1177/* with rtnl_lock */
1178static void
1179__netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1180{
1181 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1182 return;
1183
1184 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1185 return;
1186
1187 smp_mb();
1188 netif_carrier_off(netdev);
1189 netif_tx_disable(netdev);
1190
1191 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1192 netxen_linkevent_request(adapter, 0);
1193
1194 if (adapter->stop_port)
1195 adapter->stop_port(adapter);
1196
1197 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1198 netxen_p3_free_mac_list(adapter);
1199
1200 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1201
1202 netxen_napi_disable(adapter);
1203
1204 netxen_release_tx_buffers(adapter);
1205}
1206
1207/* Usage: During suspend and firmware recovery module */
1208
1209static inline void
1210netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1211{
1212 rtnl_lock();
1213 if (netif_running(netdev))
1214 __netxen_nic_down(adapter, netdev);
1215 rtnl_unlock();
1216
1217}
1218
1219static int
1220netxen_nic_attach(struct netxen_adapter *adapter)
1221{
1222 struct net_device *netdev = adapter->netdev;
1223 struct pci_dev *pdev = adapter->pdev;
1224 int err, ring;
1225 struct nx_host_rds_ring *rds_ring;
1226 struct nx_host_tx_ring *tx_ring;
1227 u32 capab2;
1228
1229 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1230 return 0;
1231
1232 err = netxen_init_firmware(adapter);
1233 if (err)
1234 return err;
1235
1236 adapter->flags &= ~NETXEN_FW_MSS_CAP;
1237 if (adapter->capabilities & NX_FW_CAPABILITY_MORE_CAPS) {
1238 capab2 = NXRD32(adapter, CRB_FW_CAPABILITIES_2);
1239 if (capab2 & NX_FW_CAPABILITY_2_LRO_MAX_TCP_SEG)
1240 adapter->flags |= NETXEN_FW_MSS_CAP;
1241 }
1242
1243 err = netxen_napi_add(adapter, netdev);
1244 if (err)
1245 return err;
1246
1247 err = netxen_alloc_sw_resources(adapter);
1248 if (err) {
1249 printk(KERN_ERR "%s: Error in setting sw resources\n",
1250 netdev->name);
1251 return err;
1252 }
1253
1254 err = netxen_alloc_hw_resources(adapter);
1255 if (err) {
1256 printk(KERN_ERR "%s: Error in setting hw resources\n",
1257 netdev->name);
1258 goto err_out_free_sw;
1259 }
1260
1261 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1262 tx_ring = adapter->tx_ring;
1263 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1264 crb_cmd_producer[adapter->portnum]);
1265 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1266 crb_cmd_consumer[adapter->portnum]);
1267
1268 tx_ring->producer = 0;
1269 tx_ring->sw_consumer = 0;
1270
1271 netxen_nic_update_cmd_producer(adapter, tx_ring);
1272 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1273 }
1274
1275 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1276 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1277 netxen_post_rx_buffers(adapter, ring, rds_ring);
1278 }
1279
1280 err = netxen_nic_request_irq(adapter);
1281 if (err) {
1282 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1283 netdev->name);
1284 goto err_out_free_rxbuf;
1285 }
1286
1287 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1288 netxen_nic_init_coalesce_defaults(adapter);
1289
1290 netxen_create_sysfs_entries(adapter);
1291
1292 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1293 return 0;
1294
1295err_out_free_rxbuf:
1296 netxen_release_rx_buffers(adapter);
1297 netxen_free_hw_resources(adapter);
1298err_out_free_sw:
1299 netxen_free_sw_resources(adapter);
1300 return err;
1301}
1302
1303static void
1304netxen_nic_detach(struct netxen_adapter *adapter)
1305{
1306 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1307 return;
1308
1309 netxen_remove_sysfs_entries(adapter);
1310
1311 netxen_free_hw_resources(adapter);
1312 netxen_release_rx_buffers(adapter);
1313 netxen_nic_free_irq(adapter);
1314 netxen_napi_del(adapter);
1315 netxen_free_sw_resources(adapter);
1316
1317 adapter->is_up = 0;
1318}
1319
1320int
1321netxen_nic_reset_context(struct netxen_adapter *adapter)
1322{
1323 int err = 0;
1324 struct net_device *netdev = adapter->netdev;
1325
1326 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1327 return -EBUSY;
1328
1329 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1330
1331 netif_device_detach(netdev);
1332
1333 if (netif_running(netdev))
1334 __netxen_nic_down(adapter, netdev);
1335
1336 netxen_nic_detach(adapter);
1337
1338 if (netif_running(netdev)) {
1339 err = netxen_nic_attach(adapter);
1340 if (!err)
1341 err = __netxen_nic_up(adapter, netdev);
1342
1343 if (err)
1344 goto done;
1345 }
1346
1347 netif_device_attach(netdev);
1348 }
1349
1350done:
1351 clear_bit(__NX_RESETTING, &adapter->state);
1352 return err;
1353}
1354
1355static int
1356netxen_setup_netdev(struct netxen_adapter *adapter,
1357 struct net_device *netdev)
1358{
1359 int err = 0;
1360 struct pci_dev *pdev = adapter->pdev;
1361
1362 adapter->mc_enabled = 0;
1363 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1364 adapter->max_mc_count = 38;
1365 else
1366 adapter->max_mc_count = 16;
1367
1368 netdev->netdev_ops = &netxen_netdev_ops;
1369 netdev->watchdog_timeo = 5*HZ;
1370
1371 netxen_nic_change_mtu(netdev, netdev->mtu);
1372
1373 netdev->ethtool_ops = &netxen_nic_ethtool_ops;
1374
1375 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1376 NETIF_F_RXCSUM;
1377
1378 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1379 netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1380
1381 netdev->vlan_features |= netdev->hw_features;
1382
1383 if (adapter->pci_using_dac) {
1384 netdev->features |= NETIF_F_HIGHDMA;
1385 netdev->vlan_features |= NETIF_F_HIGHDMA;
1386 }
1387
1388 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1389 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
1390
1391 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1392 netdev->hw_features |= NETIF_F_LRO;
1393
1394 netdev->features |= netdev->hw_features;
1395
1396 netdev->irq = adapter->msix_entries[0].vector;
1397
1398 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1399
1400 if (netxen_read_mac_addr(adapter))
1401 dev_warn(&pdev->dev, "failed to read mac addr\n");
1402
1403 netif_carrier_off(netdev);
1404
1405 err = register_netdev(netdev);
1406 if (err) {
1407 dev_err(&pdev->dev, "failed to register net device\n");
1408 return err;
1409 }
1410
1411 return 0;
1412}
1413
1414#define NETXEN_ULA_ADAPTER_KEY (0xdaddad01)
1415#define NETXEN_NON_ULA_ADAPTER_KEY (0xdaddad00)
1416
1417static void netxen_read_ula_info(struct netxen_adapter *adapter)
1418{
1419 u32 temp;
1420
1421 /* Print ULA info only once for an adapter */
1422 if (adapter->portnum != 0)
1423 return;
1424
1425 temp = NXRD32(adapter, NETXEN_ULA_KEY);
1426 switch (temp) {
1427 case NETXEN_ULA_ADAPTER_KEY:
1428 dev_info(&adapter->pdev->dev, "ULA adapter");
1429 break;
1430 case NETXEN_NON_ULA_ADAPTER_KEY:
1431 dev_info(&adapter->pdev->dev, "non ULA adapter");
1432 break;
1433 default:
1434 break;
1435 }
1436
1437 return;
1438}
1439
1440#ifdef CONFIG_PCIEAER
1441static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1442{
1443 struct pci_dev *pdev = adapter->pdev;
1444 struct pci_dev *root = pdev->bus->self;
1445 u32 aer_pos;
1446
1447 /* root bus? */
1448 if (!root)
1449 return;
1450
1451 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1452 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1453 return;
1454
1455 if (pci_pcie_type(root) != PCI_EXP_TYPE_ROOT_PORT)
1456 return;
1457
1458 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1459 if (!aer_pos)
1460 return;
1461
1462 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1463}
1464#endif
1465
1466static int
1467netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1468{
1469 struct net_device *netdev = NULL;
1470 struct netxen_adapter *adapter = NULL;
1471 int i = 0, err;
1472 int pci_func_id = PCI_FUNC(pdev->devfn);
1473 uint8_t revision_id;
1474 u32 val;
1475
1476 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1477 pr_warn("%s: chip revisions between 0x%x-0x%x will not be enabled\n",
1478 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1479 return -ENODEV;
1480 }
1481
1482 if ((err = pci_enable_device(pdev)))
1483 return err;
1484
1485 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1486 err = -ENODEV;
1487 goto err_out_disable_pdev;
1488 }
1489
1490 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1491 goto err_out_disable_pdev;
1492
1493 if (NX_IS_REVISION_P3(pdev->revision))
1494 pci_enable_pcie_error_reporting(pdev);
1495
1496 pci_set_master(pdev);
1497
1498 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1499 if(!netdev) {
1500 err = -ENOMEM;
1501 goto err_out_free_res;
1502 }
1503
1504 SET_NETDEV_DEV(netdev, &pdev->dev);
1505
1506 adapter = netdev_priv(netdev);
1507 adapter->netdev = netdev;
1508 adapter->pdev = pdev;
1509 adapter->ahw.pci_func = pci_func_id;
1510
1511 revision_id = pdev->revision;
1512 adapter->ahw.revision_id = revision_id;
1513
1514 rwlock_init(&adapter->ahw.crb_lock);
1515 spin_lock_init(&adapter->ahw.mem_lock);
1516
1517 spin_lock_init(&adapter->tx_clean_lock);
1518 INIT_LIST_HEAD(&adapter->mac_list);
1519 INIT_LIST_HEAD(&adapter->ip_list);
1520
1521 err = netxen_setup_pci_map(adapter);
1522 if (err)
1523 goto err_out_free_netdev;
1524
1525 /* This will be reset for mezz cards */
1526 adapter->portnum = pci_func_id;
1527
1528 err = netxen_nic_get_board_info(adapter);
1529 if (err) {
1530 dev_err(&pdev->dev, "Error getting board config info.\n");
1531 goto err_out_iounmap;
1532 }
1533
1534#ifdef CONFIG_PCIEAER
1535 netxen_mask_aer_correctable(adapter);
1536#endif
1537
1538 /* Mezz cards have PCI function 0,2,3 enabled */
1539 switch (adapter->ahw.board_type) {
1540 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1541 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1542 if (pci_func_id >= 2)
1543 adapter->portnum = pci_func_id - 2;
1544 break;
1545 default:
1546 break;
1547 }
1548
1549 err = netxen_check_flash_fw_compatibility(adapter);
1550 if (err)
1551 goto err_out_iounmap;
1552
1553 if (adapter->portnum == 0) {
1554 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1555 if (val != 0xffffffff && val != 0) {
1556 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1557 adapter->need_fw_reset = 1;
1558 }
1559 }
1560
1561 err = netxen_start_firmware(adapter);
1562 if (err)
1563 goto err_out_decr_ref;
1564
1565 /*
1566 * See if the firmware gave us a virtual-physical port mapping.
1567 */
1568 adapter->physical_port = adapter->portnum;
1569 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1570 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1571 if (i != 0x55555555)
1572 adapter->physical_port = i;
1573 }
1574
1575 /* MTU range: 0 - 8000 (P2) or 9600 (P3) */
1576 netdev->min_mtu = 0;
1577 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1578 netdev->max_mtu = P3_MAX_MTU;
1579 else
1580 netdev->max_mtu = P2_MAX_MTU;
1581
1582 netxen_nic_clear_stats(adapter);
1583
1584 err = netxen_setup_intr(adapter);
1585
1586 if (err) {
1587 dev_err(&adapter->pdev->dev,
1588 "Failed to setup interrupts, error = %d\n", err);
1589 goto err_out_disable_msi;
1590 }
1591
1592 netxen_read_ula_info(adapter);
1593
1594 err = netxen_setup_netdev(adapter, netdev);
1595 if (err)
1596 goto err_out_disable_msi;
1597
1598 pci_set_drvdata(pdev, adapter);
1599
1600 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1601
1602 switch (adapter->ahw.port_type) {
1603 case NETXEN_NIC_GBE:
1604 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1605 adapter->netdev->name);
1606 break;
1607 case NETXEN_NIC_XGBE:
1608 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1609 adapter->netdev->name);
1610 break;
1611 }
1612
1613 netxen_create_diag_entries(adapter);
1614
1615 return 0;
1616
1617err_out_disable_msi:
1618 netxen_teardown_intr(adapter);
1619
1620 netxen_free_dummy_dma(adapter);
1621
1622err_out_decr_ref:
1623 nx_decr_dev_ref_cnt(adapter);
1624
1625err_out_iounmap:
1626 netxen_cleanup_pci_map(adapter);
1627
1628err_out_free_netdev:
1629 free_netdev(netdev);
1630
1631err_out_free_res:
1632 pci_release_regions(pdev);
1633
1634err_out_disable_pdev:
1635 pci_disable_device(pdev);
1636 return err;
1637}
1638
1639static
1640void netxen_cleanup_minidump(struct netxen_adapter *adapter)
1641{
1642 kfree(adapter->mdump.md_template);
1643 adapter->mdump.md_template = NULL;
1644
1645 if (adapter->mdump.md_capture_buff) {
1646 vfree(adapter->mdump.md_capture_buff);
1647 adapter->mdump.md_capture_buff = NULL;
1648 }
1649}
1650
1651static void netxen_nic_remove(struct pci_dev *pdev)
1652{
1653 struct netxen_adapter *adapter;
1654 struct net_device *netdev;
1655
1656 adapter = pci_get_drvdata(pdev);
1657 if (adapter == NULL)
1658 return;
1659
1660 netdev = adapter->netdev;
1661
1662 netxen_cancel_fw_work(adapter);
1663
1664 unregister_netdev(netdev);
1665
1666 cancel_work_sync(&adapter->tx_timeout_task);
1667
1668 netxen_free_ip_list(adapter, false);
1669 netxen_nic_detach(adapter);
1670
1671 nx_decr_dev_ref_cnt(adapter);
1672
1673 if (adapter->portnum == 0)
1674 netxen_free_dummy_dma(adapter);
1675
1676 clear_bit(__NX_RESETTING, &adapter->state);
1677
1678 netxen_teardown_intr(adapter);
1679 netxen_set_interrupt_mode(adapter, 0);
1680 netxen_remove_diag_entries(adapter);
1681
1682 netxen_cleanup_pci_map(adapter);
1683
1684 netxen_release_firmware(adapter);
1685
1686 if (NX_IS_REVISION_P3(pdev->revision)) {
1687 netxen_cleanup_minidump(adapter);
1688 pci_disable_pcie_error_reporting(pdev);
1689 }
1690
1691 pci_release_regions(pdev);
1692 pci_disable_device(pdev);
1693
1694 free_netdev(netdev);
1695}
1696
1697static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1698{
1699 struct net_device *netdev = adapter->netdev;
1700
1701 netif_device_detach(netdev);
1702
1703 netxen_cancel_fw_work(adapter);
1704
1705 if (netif_running(netdev))
1706 netxen_nic_down(adapter, netdev);
1707
1708 cancel_work_sync(&adapter->tx_timeout_task);
1709
1710 netxen_nic_detach(adapter);
1711
1712 if (adapter->portnum == 0)
1713 netxen_free_dummy_dma(adapter);
1714
1715 nx_decr_dev_ref_cnt(adapter);
1716
1717 clear_bit(__NX_RESETTING, &adapter->state);
1718}
1719
1720static int netxen_nic_attach_func(struct pci_dev *pdev)
1721{
1722 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1723 struct net_device *netdev = adapter->netdev;
1724 int err;
1725
1726 err = pci_enable_device(pdev);
1727 if (err)
1728 return err;
1729
1730 pci_set_power_state(pdev, PCI_D0);
1731 pci_set_master(pdev);
1732 pci_restore_state(pdev);
1733
1734 adapter->ahw.crb_win = -1;
1735 adapter->ahw.ocm_win = -1;
1736
1737 err = netxen_start_firmware(adapter);
1738 if (err) {
1739 dev_err(&pdev->dev, "failed to start firmware\n");
1740 return err;
1741 }
1742
1743 if (netif_running(netdev)) {
1744 err = netxen_nic_attach(adapter);
1745 if (err)
1746 goto err_out;
1747
1748 err = netxen_nic_up(adapter, netdev);
1749 if (err)
1750 goto err_out_detach;
1751
1752 netxen_restore_indev_addr(netdev, NETDEV_UP);
1753 }
1754
1755 netif_device_attach(netdev);
1756 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1757 return 0;
1758
1759err_out_detach:
1760 netxen_nic_detach(adapter);
1761err_out:
1762 nx_decr_dev_ref_cnt(adapter);
1763 return err;
1764}
1765
1766static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1767 pci_channel_state_t state)
1768{
1769 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1770
1771 if (state == pci_channel_io_perm_failure)
1772 return PCI_ERS_RESULT_DISCONNECT;
1773
1774 if (nx_dev_request_aer(adapter))
1775 return PCI_ERS_RESULT_RECOVERED;
1776
1777 netxen_nic_detach_func(adapter);
1778
1779 pci_disable_device(pdev);
1780
1781 return PCI_ERS_RESULT_NEED_RESET;
1782}
1783
1784static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1785{
1786 int err = 0;
1787
1788 err = netxen_nic_attach_func(pdev);
1789
1790 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1791}
1792
1793static void netxen_io_resume(struct pci_dev *pdev)
1794{
1795 pci_cleanup_aer_uncorrect_error_status(pdev);
1796}
1797
1798static void netxen_nic_shutdown(struct pci_dev *pdev)
1799{
1800 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1801
1802 netxen_nic_detach_func(adapter);
1803
1804 if (pci_save_state(pdev))
1805 return;
1806
1807 if (netxen_nic_wol_supported(adapter)) {
1808 pci_enable_wake(pdev, PCI_D3cold, 1);
1809 pci_enable_wake(pdev, PCI_D3hot, 1);
1810 }
1811
1812 pci_disable_device(pdev);
1813}
1814
1815#ifdef CONFIG_PM
1816static int
1817netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1818{
1819 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1820 int retval;
1821
1822 netxen_nic_detach_func(adapter);
1823
1824 retval = pci_save_state(pdev);
1825 if (retval)
1826 return retval;
1827
1828 if (netxen_nic_wol_supported(adapter)) {
1829 pci_enable_wake(pdev, PCI_D3cold, 1);
1830 pci_enable_wake(pdev, PCI_D3hot, 1);
1831 }
1832
1833 pci_disable_device(pdev);
1834 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1835
1836 return 0;
1837}
1838
1839static int
1840netxen_nic_resume(struct pci_dev *pdev)
1841{
1842 return netxen_nic_attach_func(pdev);
1843}
1844#endif
1845
1846static int netxen_nic_open(struct net_device *netdev)
1847{
1848 struct netxen_adapter *adapter = netdev_priv(netdev);
1849 int err = 0;
1850
1851 if (adapter->driver_mismatch)
1852 return -EIO;
1853
1854 err = netxen_nic_attach(adapter);
1855 if (err)
1856 return err;
1857
1858 err = __netxen_nic_up(adapter, netdev);
1859 if (err)
1860 goto err_out;
1861
1862 netif_start_queue(netdev);
1863
1864 return 0;
1865
1866err_out:
1867 netxen_nic_detach(adapter);
1868 return err;
1869}
1870
1871/*
1872 * netxen_nic_close - Disables a network interface entry point
1873 */
1874static int netxen_nic_close(struct net_device *netdev)
1875{
1876 struct netxen_adapter *adapter = netdev_priv(netdev);
1877
1878 __netxen_nic_down(adapter, netdev);
1879 return 0;
1880}
1881
1882static void
1883netxen_tso_check(struct net_device *netdev,
1884 struct nx_host_tx_ring *tx_ring,
1885 struct cmd_desc_type0 *first_desc,
1886 struct sk_buff *skb)
1887{
1888 u8 opcode = TX_ETHER_PKT;
1889 __be16 protocol = skb->protocol;
1890 u16 flags = 0, vid = 0;
1891 u32 producer;
1892 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1893 struct cmd_desc_type0 *hwdesc;
1894 struct vlan_ethhdr *vh;
1895
1896 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1897
1898 vh = (struct vlan_ethhdr *)skb->data;
1899 protocol = vh->h_vlan_encapsulated_proto;
1900 flags = FLAGS_VLAN_TAGGED;
1901
1902 } else if (skb_vlan_tag_present(skb)) {
1903 flags = FLAGS_VLAN_OOB;
1904 vid = skb_vlan_tag_get(skb);
1905 netxen_set_tx_vlan_tci(first_desc, vid);
1906 vlan_oob = 1;
1907 }
1908
1909 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1910 skb_shinfo(skb)->gso_size > 0) {
1911
1912 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1913
1914 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1915 first_desc->total_hdr_length = hdr_len;
1916 if (vlan_oob) {
1917 first_desc->total_hdr_length += VLAN_HLEN;
1918 first_desc->tcp_hdr_offset = VLAN_HLEN;
1919 first_desc->ip_hdr_offset = VLAN_HLEN;
1920 /* Only in case of TSO on vlan device */
1921 flags |= FLAGS_VLAN_TAGGED;
1922 }
1923
1924 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1925 TX_TCP_LSO6 : TX_TCP_LSO;
1926 tso = 1;
1927
1928 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1929 u8 l4proto;
1930
1931 if (protocol == cpu_to_be16(ETH_P_IP)) {
1932 l4proto = ip_hdr(skb)->protocol;
1933
1934 if (l4proto == IPPROTO_TCP)
1935 opcode = TX_TCP_PKT;
1936 else if(l4proto == IPPROTO_UDP)
1937 opcode = TX_UDP_PKT;
1938 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1939 l4proto = ipv6_hdr(skb)->nexthdr;
1940
1941 if (l4proto == IPPROTO_TCP)
1942 opcode = TX_TCPV6_PKT;
1943 else if(l4proto == IPPROTO_UDP)
1944 opcode = TX_UDPV6_PKT;
1945 }
1946 }
1947
1948 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1949 first_desc->ip_hdr_offset += skb_network_offset(skb);
1950 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1951
1952 if (!tso)
1953 return;
1954
1955 /* For LSO, we need to copy the MAC/IP/TCP headers into
1956 * the descriptor ring
1957 */
1958 producer = tx_ring->producer;
1959 copied = 0;
1960 offset = 2;
1961
1962 if (vlan_oob) {
1963 /* Create a TSO vlan header template for firmware */
1964
1965 hwdesc = &tx_ring->desc_head[producer];
1966 tx_ring->cmd_buf_arr[producer].skb = NULL;
1967
1968 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1969 hdr_len + VLAN_HLEN);
1970
1971 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1972 skb_copy_from_linear_data(skb, vh, 12);
1973 vh->h_vlan_proto = htons(ETH_P_8021Q);
1974 vh->h_vlan_TCI = htons(vid);
1975 skb_copy_from_linear_data_offset(skb, 12,
1976 (char *)vh + 16, copy_len - 16);
1977
1978 copied = copy_len - VLAN_HLEN;
1979 offset = 0;
1980
1981 producer = get_next_index(producer, tx_ring->num_desc);
1982 }
1983
1984 while (copied < hdr_len) {
1985
1986 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1987 (hdr_len - copied));
1988
1989 hwdesc = &tx_ring->desc_head[producer];
1990 tx_ring->cmd_buf_arr[producer].skb = NULL;
1991
1992 skb_copy_from_linear_data_offset(skb, copied,
1993 (char *)hwdesc + offset, copy_len);
1994
1995 copied += copy_len;
1996 offset = 0;
1997
1998 producer = get_next_index(producer, tx_ring->num_desc);
1999 }
2000
2001 tx_ring->producer = producer;
2002 barrier();
2003}
2004
2005static int
2006netxen_map_tx_skb(struct pci_dev *pdev,
2007 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
2008{
2009 struct netxen_skb_frag *nf;
2010 struct skb_frag_struct *frag;
2011 int i, nr_frags;
2012 dma_addr_t map;
2013
2014 nr_frags = skb_shinfo(skb)->nr_frags;
2015 nf = &pbuf->frag_array[0];
2016
2017 map = pci_map_single(pdev, skb->data,
2018 skb_headlen(skb), PCI_DMA_TODEVICE);
2019 if (pci_dma_mapping_error(pdev, map))
2020 goto out_err;
2021
2022 nf->dma = map;
2023 nf->length = skb_headlen(skb);
2024
2025 for (i = 0; i < nr_frags; i++) {
2026 frag = &skb_shinfo(skb)->frags[i];
2027 nf = &pbuf->frag_array[i+1];
2028
2029 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
2030 DMA_TO_DEVICE);
2031 if (dma_mapping_error(&pdev->dev, map))
2032 goto unwind;
2033
2034 nf->dma = map;
2035 nf->length = skb_frag_size(frag);
2036 }
2037
2038 return 0;
2039
2040unwind:
2041 while (--i >= 0) {
2042 nf = &pbuf->frag_array[i+1];
2043 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
2044 nf->dma = 0ULL;
2045 }
2046
2047 nf = &pbuf->frag_array[0];
2048 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
2049 nf->dma = 0ULL;
2050
2051out_err:
2052 return -ENOMEM;
2053}
2054
2055static inline void
2056netxen_clear_cmddesc(u64 *desc)
2057{
2058 desc[0] = 0ULL;
2059 desc[2] = 0ULL;
2060}
2061
2062static netdev_tx_t
2063netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2064{
2065 struct netxen_adapter *adapter = netdev_priv(netdev);
2066 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
2067 struct netxen_cmd_buffer *pbuf;
2068 struct netxen_skb_frag *buffrag;
2069 struct cmd_desc_type0 *hwdesc, *first_desc;
2070 struct pci_dev *pdev;
2071 int i, k;
2072 int delta = 0;
2073 struct skb_frag_struct *frag;
2074
2075 u32 producer;
2076 int frag_count, no_of_desc;
2077 u32 num_txd = tx_ring->num_desc;
2078
2079 frag_count = skb_shinfo(skb)->nr_frags + 1;
2080
2081 /* 14 frags supported for normal packet and
2082 * 32 frags supported for TSO packet
2083 */
2084 if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
2085
2086 for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
2087 frag = &skb_shinfo(skb)->frags[i];
2088 delta += skb_frag_size(frag);
2089 }
2090
2091 if (!__pskb_pull_tail(skb, delta))
2092 goto drop_packet;
2093
2094 frag_count = 1 + skb_shinfo(skb)->nr_frags;
2095 }
2096 /* 4 fragments per cmd des */
2097 no_of_desc = (frag_count + 3) >> 2;
2098
2099 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
2100 netif_stop_queue(netdev);
2101 smp_mb();
2102 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
2103 netif_start_queue(netdev);
2104 else
2105 return NETDEV_TX_BUSY;
2106 }
2107
2108 producer = tx_ring->producer;
2109 pbuf = &tx_ring->cmd_buf_arr[producer];
2110
2111 pdev = adapter->pdev;
2112
2113 if (netxen_map_tx_skb(pdev, skb, pbuf))
2114 goto drop_packet;
2115
2116 pbuf->skb = skb;
2117 pbuf->frag_count = frag_count;
2118
2119 first_desc = hwdesc = &tx_ring->desc_head[producer];
2120 netxen_clear_cmddesc((u64 *)hwdesc);
2121
2122 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
2123 netxen_set_tx_port(first_desc, adapter->portnum);
2124
2125 for (i = 0; i < frag_count; i++) {
2126
2127 k = i % 4;
2128
2129 if ((k == 0) && (i > 0)) {
2130 /* move to next desc.*/
2131 producer = get_next_index(producer, num_txd);
2132 hwdesc = &tx_ring->desc_head[producer];
2133 netxen_clear_cmddesc((u64 *)hwdesc);
2134 tx_ring->cmd_buf_arr[producer].skb = NULL;
2135 }
2136
2137 buffrag = &pbuf->frag_array[i];
2138
2139 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
2140 switch (k) {
2141 case 0:
2142 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
2143 break;
2144 case 1:
2145 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
2146 break;
2147 case 2:
2148 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
2149 break;
2150 case 3:
2151 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
2152 break;
2153 }
2154 }
2155
2156 tx_ring->producer = get_next_index(producer, num_txd);
2157
2158 netxen_tso_check(netdev, tx_ring, first_desc, skb);
2159
2160 adapter->stats.txbytes += skb->len;
2161 adapter->stats.xmitcalled++;
2162
2163 netxen_nic_update_cmd_producer(adapter, tx_ring);
2164
2165 return NETDEV_TX_OK;
2166
2167drop_packet:
2168 adapter->stats.txdropped++;
2169 dev_kfree_skb_any(skb);
2170 return NETDEV_TX_OK;
2171}
2172
2173static int netxen_nic_check_temp(struct netxen_adapter *adapter)
2174{
2175 struct net_device *netdev = adapter->netdev;
2176 uint32_t temp, temp_state, temp_val;
2177 int rv = 0;
2178
2179 temp = NXRD32(adapter, CRB_TEMP_STATE);
2180
2181 temp_state = nx_get_temp_state(temp);
2182 temp_val = nx_get_temp_val(temp);
2183
2184 if (temp_state == NX_TEMP_PANIC) {
2185 printk(KERN_ALERT
2186 "%s: Device temperature %d degrees C exceeds"
2187 " maximum allowed. Hardware has been shut down.\n",
2188 netdev->name, temp_val);
2189 rv = 1;
2190 } else if (temp_state == NX_TEMP_WARN) {
2191 if (adapter->temp == NX_TEMP_NORMAL) {
2192 printk(KERN_ALERT
2193 "%s: Device temperature %d degrees C "
2194 "exceeds operating range."
2195 " Immediate action needed.\n",
2196 netdev->name, temp_val);
2197 }
2198 } else {
2199 if (adapter->temp == NX_TEMP_WARN) {
2200 printk(KERN_INFO
2201 "%s: Device temperature is now %d degrees C"
2202 " in normal range.\n", netdev->name,
2203 temp_val);
2204 }
2205 }
2206 adapter->temp = temp_state;
2207 return rv;
2208}
2209
2210void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2211{
2212 struct net_device *netdev = adapter->netdev;
2213
2214 if (adapter->ahw.linkup && !linkup) {
2215 printk(KERN_INFO "%s: %s NIC Link is down\n",
2216 netxen_nic_driver_name, netdev->name);
2217 adapter->ahw.linkup = 0;
2218 if (netif_running(netdev)) {
2219 netif_carrier_off(netdev);
2220 netif_stop_queue(netdev);
2221 }
2222 adapter->link_changed = !adapter->has_link_events;
2223 } else if (!adapter->ahw.linkup && linkup) {
2224 printk(KERN_INFO "%s: %s NIC Link is up\n",
2225 netxen_nic_driver_name, netdev->name);
2226 adapter->ahw.linkup = 1;
2227 if (netif_running(netdev)) {
2228 netif_carrier_on(netdev);
2229 netif_wake_queue(netdev);
2230 }
2231 adapter->link_changed = !adapter->has_link_events;
2232 }
2233}
2234
2235static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2236{
2237 u32 val, port, linkup;
2238
2239 port = adapter->physical_port;
2240
2241 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2242 val = NXRD32(adapter, CRB_XG_STATE_P3);
2243 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2244 linkup = (val == XG_LINK_UP_P3);
2245 } else {
2246 val = NXRD32(adapter, CRB_XG_STATE);
2247 val = (val >> port*8) & 0xff;
2248 linkup = (val == XG_LINK_UP);
2249 }
2250
2251 netxen_advert_link_change(adapter, linkup);
2252}
2253
2254static void netxen_tx_timeout(struct net_device *netdev)
2255{
2256 struct netxen_adapter *adapter = netdev_priv(netdev);
2257
2258 if (test_bit(__NX_RESETTING, &adapter->state))
2259 return;
2260
2261 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2262 schedule_work(&adapter->tx_timeout_task);
2263}
2264
2265static void netxen_tx_timeout_task(struct work_struct *work)
2266{
2267 struct netxen_adapter *adapter =
2268 container_of(work, struct netxen_adapter, tx_timeout_task);
2269
2270 if (!netif_running(adapter->netdev))
2271 return;
2272
2273 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2274 return;
2275
2276 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2277 goto request_reset;
2278
2279 rtnl_lock();
2280 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2281 /* try to scrub interrupt */
2282 netxen_napi_disable(adapter);
2283
2284 netxen_napi_enable(adapter);
2285
2286 netif_wake_queue(adapter->netdev);
2287
2288 clear_bit(__NX_RESETTING, &adapter->state);
2289 } else {
2290 clear_bit(__NX_RESETTING, &adapter->state);
2291 if (netxen_nic_reset_context(adapter)) {
2292 rtnl_unlock();
2293 goto request_reset;
2294 }
2295 }
2296 netif_trans_update(adapter->netdev);
2297 rtnl_unlock();
2298 return;
2299
2300request_reset:
2301 adapter->need_fw_reset = 1;
2302 clear_bit(__NX_RESETTING, &adapter->state);
2303}
2304
2305static void netxen_nic_get_stats(struct net_device *netdev,
2306 struct rtnl_link_stats64 *stats)
2307{
2308 struct netxen_adapter *adapter = netdev_priv(netdev);
2309
2310 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2311 stats->tx_packets = adapter->stats.xmitfinished;
2312 stats->rx_bytes = adapter->stats.rxbytes;
2313 stats->tx_bytes = adapter->stats.txbytes;
2314 stats->rx_dropped = adapter->stats.rxdropped;
2315 stats->tx_dropped = adapter->stats.txdropped;
2316}
2317
2318static irqreturn_t netxen_intr(int irq, void *data)
2319{
2320 struct nx_host_sds_ring *sds_ring = data;
2321 struct netxen_adapter *adapter = sds_ring->adapter;
2322 u32 status = 0;
2323
2324 status = readl(adapter->isr_int_vec);
2325
2326 if (!(status & adapter->int_vec_bit))
2327 return IRQ_NONE;
2328
2329 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2330 /* check interrupt state machine, to be sure */
2331 status = readl(adapter->crb_int_state_reg);
2332 if (!ISR_LEGACY_INT_TRIGGERED(status))
2333 return IRQ_NONE;
2334
2335 } else {
2336 unsigned long our_int = 0;
2337
2338 our_int = readl(adapter->crb_int_state_reg);
2339
2340 /* not our interrupt */
2341 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2342 return IRQ_NONE;
2343
2344 /* claim interrupt */
2345 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2346
2347 /* clear interrupt */
2348 netxen_nic_disable_int(sds_ring);
2349 }
2350
2351 writel(0xffffffff, adapter->tgt_status_reg);
2352 /* read twice to ensure write is flushed */
2353 readl(adapter->isr_int_vec);
2354 readl(adapter->isr_int_vec);
2355
2356 napi_schedule(&sds_ring->napi);
2357
2358 return IRQ_HANDLED;
2359}
2360
2361static irqreturn_t netxen_msi_intr(int irq, void *data)
2362{
2363 struct nx_host_sds_ring *sds_ring = data;
2364 struct netxen_adapter *adapter = sds_ring->adapter;
2365
2366 /* clear interrupt */
2367 writel(0xffffffff, adapter->tgt_status_reg);
2368
2369 napi_schedule(&sds_ring->napi);
2370 return IRQ_HANDLED;
2371}
2372
2373static irqreturn_t netxen_msix_intr(int irq, void *data)
2374{
2375 struct nx_host_sds_ring *sds_ring = data;
2376
2377 napi_schedule(&sds_ring->napi);
2378 return IRQ_HANDLED;
2379}
2380
2381static int netxen_nic_poll(struct napi_struct *napi, int budget)
2382{
2383 struct nx_host_sds_ring *sds_ring =
2384 container_of(napi, struct nx_host_sds_ring, napi);
2385
2386 struct netxen_adapter *adapter = sds_ring->adapter;
2387
2388 int tx_complete;
2389 int work_done;
2390
2391 tx_complete = netxen_process_cmd_ring(adapter);
2392
2393 work_done = netxen_process_rcv_ring(sds_ring, budget);
2394
2395 if (!tx_complete)
2396 work_done = budget;
2397
2398 if (work_done < budget) {
2399 napi_complete_done(&sds_ring->napi, work_done);
2400 if (test_bit(__NX_DEV_UP, &adapter->state))
2401 netxen_nic_enable_int(sds_ring);
2402 }
2403
2404 return work_done;
2405}
2406
2407#ifdef CONFIG_NET_POLL_CONTROLLER
2408static void netxen_nic_poll_controller(struct net_device *netdev)
2409{
2410 int ring;
2411 struct nx_host_sds_ring *sds_ring;
2412 struct netxen_adapter *adapter = netdev_priv(netdev);
2413 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2414
2415 disable_irq(adapter->irq);
2416 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2417 sds_ring = &recv_ctx->sds_rings[ring];
2418 netxen_intr(adapter->irq, sds_ring);
2419 }
2420 enable_irq(adapter->irq);
2421}
2422#endif
2423
2424static int
2425nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2426{
2427 int count;
2428 if (netxen_api_lock(adapter))
2429 return -EIO;
2430
2431 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2432
2433 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2434
2435 netxen_api_unlock(adapter);
2436 return count;
2437}
2438
2439static int
2440nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2441{
2442 int count, state;
2443 if (netxen_api_lock(adapter))
2444 return -EIO;
2445
2446 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2447 WARN_ON(count == 0);
2448
2449 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2450 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2451
2452 if (count == 0 && state != NX_DEV_FAILED)
2453 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2454
2455 netxen_api_unlock(adapter);
2456 return count;
2457}
2458
2459static int
2460nx_dev_request_aer(struct netxen_adapter *adapter)
2461{
2462 u32 state;
2463 int ret = -EINVAL;
2464
2465 if (netxen_api_lock(adapter))
2466 return ret;
2467
2468 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2469
2470 if (state == NX_DEV_NEED_AER)
2471 ret = 0;
2472 else if (state == NX_DEV_READY) {
2473 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2474 ret = 0;
2475 }
2476
2477 netxen_api_unlock(adapter);
2478 return ret;
2479}
2480
2481int
2482nx_dev_request_reset(struct netxen_adapter *adapter)
2483{
2484 u32 state;
2485 int ret = -EINVAL;
2486
2487 if (netxen_api_lock(adapter))
2488 return ret;
2489
2490 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2491
2492 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED)
2493 ret = 0;
2494 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2495 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2496 adapter->flags |= NETXEN_FW_RESET_OWNER;
2497 ret = 0;
2498 }
2499
2500 netxen_api_unlock(adapter);
2501
2502 return ret;
2503}
2504
2505static int
2506netxen_can_start_firmware(struct netxen_adapter *adapter)
2507{
2508 int count;
2509 int can_start = 0;
2510
2511 if (netxen_api_lock(adapter)) {
2512 nx_incr_dev_ref_cnt(adapter);
2513 return -1;
2514 }
2515
2516 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2517
2518 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2519 count = 0;
2520
2521 if (count == 0) {
2522 can_start = 1;
2523 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2524 }
2525
2526 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2527
2528 netxen_api_unlock(adapter);
2529
2530 return can_start;
2531}
2532
2533static void
2534netxen_schedule_work(struct netxen_adapter *adapter,
2535 work_func_t func, int delay)
2536{
2537 INIT_DELAYED_WORK(&adapter->fw_work, func);
2538 schedule_delayed_work(&adapter->fw_work, delay);
2539}
2540
2541static void
2542netxen_cancel_fw_work(struct netxen_adapter *adapter)
2543{
2544 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2545 msleep(10);
2546
2547 cancel_delayed_work_sync(&adapter->fw_work);
2548}
2549
2550static void
2551netxen_attach_work(struct work_struct *work)
2552{
2553 struct netxen_adapter *adapter = container_of(work,
2554 struct netxen_adapter, fw_work.work);
2555 struct net_device *netdev = adapter->netdev;
2556 int err = 0;
2557
2558 if (netif_running(netdev)) {
2559 err = netxen_nic_attach(adapter);
2560 if (err)
2561 goto done;
2562
2563 err = netxen_nic_up(adapter, netdev);
2564 if (err) {
2565 netxen_nic_detach(adapter);
2566 goto done;
2567 }
2568
2569 netxen_restore_indev_addr(netdev, NETDEV_UP);
2570 }
2571
2572 netif_device_attach(netdev);
2573
2574done:
2575 adapter->fw_fail_cnt = 0;
2576 clear_bit(__NX_RESETTING, &adapter->state);
2577 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2578}
2579
2580static void
2581netxen_fwinit_work(struct work_struct *work)
2582{
2583 struct netxen_adapter *adapter = container_of(work,
2584 struct netxen_adapter, fw_work.work);
2585 int dev_state;
2586 int count;
2587 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2588 if (adapter->flags & NETXEN_FW_RESET_OWNER) {
2589 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2590 WARN_ON(count == 0);
2591 if (count == 1) {
2592 if (adapter->mdump.md_enabled) {
2593 rtnl_lock();
2594 netxen_dump_fw(adapter);
2595 rtnl_unlock();
2596 }
2597 adapter->flags &= ~NETXEN_FW_RESET_OWNER;
2598 if (netxen_api_lock(adapter)) {
2599 clear_bit(__NX_RESETTING, &adapter->state);
2600 NXWR32(adapter, NX_CRB_DEV_STATE,
2601 NX_DEV_FAILED);
2602 return;
2603 }
2604 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2605 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2606 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2607 dev_state = NX_DEV_COLD;
2608 netxen_api_unlock(adapter);
2609 }
2610 }
2611
2612 switch (dev_state) {
2613 case NX_DEV_COLD:
2614 case NX_DEV_READY:
2615 if (!netxen_start_firmware(adapter)) {
2616 netxen_schedule_work(adapter, netxen_attach_work, 0);
2617 return;
2618 }
2619 break;
2620
2621 case NX_DEV_NEED_RESET:
2622 case NX_DEV_INITALIZING:
2623 netxen_schedule_work(adapter,
2624 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2625 return;
2626
2627 case NX_DEV_FAILED:
2628 default:
2629 nx_incr_dev_ref_cnt(adapter);
2630 break;
2631 }
2632
2633 if (netxen_api_lock(adapter)) {
2634 clear_bit(__NX_RESETTING, &adapter->state);
2635 return;
2636 }
2637 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_FAILED);
2638 netxen_api_unlock(adapter);
2639 dev_err(&adapter->pdev->dev, "%s: Device initialization Failed\n",
2640 adapter->netdev->name);
2641
2642 clear_bit(__NX_RESETTING, &adapter->state);
2643}
2644
2645static void
2646netxen_detach_work(struct work_struct *work)
2647{
2648 struct netxen_adapter *adapter = container_of(work,
2649 struct netxen_adapter, fw_work.work);
2650 struct net_device *netdev = adapter->netdev;
2651 int ref_cnt = 0, delay;
2652 u32 status;
2653
2654 netif_device_detach(netdev);
2655
2656 netxen_nic_down(adapter, netdev);
2657
2658 rtnl_lock();
2659 netxen_nic_detach(adapter);
2660 rtnl_unlock();
2661
2662 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2663
2664 if (status & NX_RCODE_FATAL_ERROR)
2665 goto err_ret;
2666
2667 if (adapter->temp == NX_TEMP_PANIC)
2668 goto err_ret;
2669
2670 if (!(adapter->flags & NETXEN_FW_RESET_OWNER))
2671 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2672
2673 if (ref_cnt == -EIO)
2674 goto err_ret;
2675
2676 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2677
2678 adapter->fw_wait_cnt = 0;
2679 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2680
2681 return;
2682
2683err_ret:
2684 clear_bit(__NX_RESETTING, &adapter->state);
2685}
2686
2687static int
2688netxen_check_health(struct netxen_adapter *adapter)
2689{
2690 u32 state, heartbit;
2691 u32 peg_status;
2692 struct net_device *netdev = adapter->netdev;
2693
2694 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2695 if (state == NX_DEV_NEED_AER)
2696 return 0;
2697
2698 if (netxen_nic_check_temp(adapter))
2699 goto detach;
2700
2701 if (adapter->need_fw_reset) {
2702 if (nx_dev_request_reset(adapter))
2703 return 0;
2704 goto detach;
2705 }
2706
2707 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2708 * 1. Tx timeout 2. Fw hang
2709 * Send request to destroy context in case of tx timeout only
2710 * and doesn't required in case of Fw hang
2711 */
2712 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED) {
2713 adapter->need_fw_reset = 1;
2714 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2715 goto detach;
2716 }
2717
2718 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2719 return 0;
2720
2721 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2722 if (heartbit != adapter->heartbit) {
2723 adapter->heartbit = heartbit;
2724 adapter->fw_fail_cnt = 0;
2725 if (adapter->need_fw_reset)
2726 goto detach;
2727 return 0;
2728 }
2729
2730 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2731 return 0;
2732
2733 if (nx_dev_request_reset(adapter))
2734 return 0;
2735
2736 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2737
2738 dev_err(&netdev->dev, "firmware hang detected\n");
2739 peg_status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2740 dev_err(&adapter->pdev->dev, "Dumping hw/fw registers\n"
2741 "PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2: 0x%x,\n"
2742 "PEG_NET_0_PC: 0x%x, PEG_NET_1_PC: 0x%x,\n"
2743 "PEG_NET_2_PC: 0x%x, PEG_NET_3_PC: 0x%x,\n"
2744 "PEG_NET_4_PC: 0x%x\n",
2745 peg_status,
2746 NXRD32(adapter, NETXEN_PEG_HALT_STATUS2),
2747 NXRD32(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c),
2748 NXRD32(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c),
2749 NXRD32(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c),
2750 NXRD32(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c),
2751 NXRD32(adapter, NETXEN_CRB_PEG_NET_4 + 0x3c));
2752 if (NX_FWERROR_PEGSTAT1(peg_status) == 0x67)
2753 dev_err(&adapter->pdev->dev,
2754 "Firmware aborted with error code 0x00006700. "
2755 "Device is being reset.\n");
2756detach:
2757 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2758 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2759 netxen_schedule_work(adapter, netxen_detach_work, 0);
2760 return 1;
2761}
2762
2763static void
2764netxen_fw_poll_work(struct work_struct *work)
2765{
2766 struct netxen_adapter *adapter = container_of(work,
2767 struct netxen_adapter, fw_work.work);
2768
2769 if (test_bit(__NX_RESETTING, &adapter->state))
2770 goto reschedule;
2771
2772 if (test_bit(__NX_DEV_UP, &adapter->state) &&
2773 !(adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)) {
2774 if (!adapter->has_link_events) {
2775
2776 netxen_nic_handle_phy_intr(adapter);
2777
2778 if (adapter->link_changed)
2779 netxen_nic_set_link_parameters(adapter);
2780 }
2781 }
2782
2783 if (netxen_check_health(adapter))
2784 return;
2785
2786reschedule:
2787 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2788}
2789
2790static ssize_t
2791netxen_store_bridged_mode(struct device *dev,
2792 struct device_attribute *attr, const char *buf, size_t len)
2793{
2794 struct net_device *net = to_net_dev(dev);
2795 struct netxen_adapter *adapter = netdev_priv(net);
2796 unsigned long new;
2797 int ret = -EINVAL;
2798
2799 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2800 goto err_out;
2801
2802 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2803 goto err_out;
2804
2805 if (kstrtoul(buf, 2, &new))
2806 goto err_out;
2807
2808 if (!netxen_config_bridged_mode(adapter, !!new))
2809 ret = len;
2810
2811err_out:
2812 return ret;
2813}
2814
2815static ssize_t
2816netxen_show_bridged_mode(struct device *dev,
2817 struct device_attribute *attr, char *buf)
2818{
2819 struct net_device *net = to_net_dev(dev);
2820 struct netxen_adapter *adapter;
2821 int bridged_mode = 0;
2822
2823 adapter = netdev_priv(net);
2824
2825 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2826 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2827
2828 return sprintf(buf, "%d\n", bridged_mode);
2829}
2830
2831static const struct device_attribute dev_attr_bridged_mode = {
2832 .attr = { .name = "bridged_mode", .mode = 0644 },
2833 .show = netxen_show_bridged_mode,
2834 .store = netxen_store_bridged_mode,
2835};
2836
2837static ssize_t
2838netxen_store_diag_mode(struct device *dev,
2839 struct device_attribute *attr, const char *buf, size_t len)
2840{
2841 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2842 unsigned long new;
2843
2844 if (kstrtoul(buf, 2, &new))
2845 return -EINVAL;
2846
2847 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2848 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2849
2850 return len;
2851}
2852
2853static ssize_t
2854netxen_show_diag_mode(struct device *dev,
2855 struct device_attribute *attr, char *buf)
2856{
2857 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2858
2859 return sprintf(buf, "%d\n",
2860 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2861}
2862
2863static const struct device_attribute dev_attr_diag_mode = {
2864 .attr = { .name = "diag_mode", .mode = 0644 },
2865 .show = netxen_show_diag_mode,
2866 .store = netxen_store_diag_mode,
2867};
2868
2869static int
2870netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2871 loff_t offset, size_t size)
2872{
2873 size_t crb_size = 4;
2874
2875 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2876 return -EIO;
2877
2878 if (offset < NETXEN_PCI_CRBSPACE) {
2879 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2880 return -EINVAL;
2881
2882 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2883 NETXEN_PCI_CAMQM_2M_END))
2884 crb_size = 8;
2885 else
2886 return -EINVAL;
2887 }
2888
2889 if ((size != crb_size) || (offset & (crb_size-1)))
2890 return -EINVAL;
2891
2892 return 0;
2893}
2894
2895static ssize_t
2896netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2897 struct bin_attribute *attr,
2898 char *buf, loff_t offset, size_t size)
2899{
2900 struct device *dev = kobj_to_dev(kobj);
2901 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2902 u32 data;
2903 u64 qmdata;
2904 int ret;
2905
2906 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2907 if (ret != 0)
2908 return ret;
2909
2910 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2911 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2912 NETXEN_PCI_CAMQM_2M_END)) {
2913 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2914 memcpy(buf, &qmdata, size);
2915 } else {
2916 data = NXRD32(adapter, offset);
2917 memcpy(buf, &data, size);
2918 }
2919
2920 return size;
2921}
2922
2923static ssize_t
2924netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2925 struct bin_attribute *attr,
2926 char *buf, loff_t offset, size_t size)
2927{
2928 struct device *dev = kobj_to_dev(kobj);
2929 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2930 u32 data;
2931 u64 qmdata;
2932 int ret;
2933
2934 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2935 if (ret != 0)
2936 return ret;
2937
2938 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2939 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2940 NETXEN_PCI_CAMQM_2M_END)) {
2941 memcpy(&qmdata, buf, size);
2942 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2943 } else {
2944 memcpy(&data, buf, size);
2945 NXWR32(adapter, offset, data);
2946 }
2947
2948 return size;
2949}
2950
2951static int
2952netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2953 loff_t offset, size_t size)
2954{
2955 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2956 return -EIO;
2957
2958 if ((size != 8) || (offset & 0x7))
2959 return -EIO;
2960
2961 return 0;
2962}
2963
2964static ssize_t
2965netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2966 struct bin_attribute *attr,
2967 char *buf, loff_t offset, size_t size)
2968{
2969 struct device *dev = kobj_to_dev(kobj);
2970 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2971 u64 data;
2972 int ret;
2973
2974 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2975 if (ret != 0)
2976 return ret;
2977
2978 if (adapter->pci_mem_read(adapter, offset, &data))
2979 return -EIO;
2980
2981 memcpy(buf, &data, size);
2982
2983 return size;
2984}
2985
2986static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2987 struct bin_attribute *attr, char *buf,
2988 loff_t offset, size_t size)
2989{
2990 struct device *dev = kobj_to_dev(kobj);
2991 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2992 u64 data;
2993 int ret;
2994
2995 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2996 if (ret != 0)
2997 return ret;
2998
2999 memcpy(&data, buf, size);
3000
3001 if (adapter->pci_mem_write(adapter, offset, data))
3002 return -EIO;
3003
3004 return size;
3005}
3006
3007
3008static const struct bin_attribute bin_attr_crb = {
3009 .attr = { .name = "crb", .mode = 0644 },
3010 .size = 0,
3011 .read = netxen_sysfs_read_crb,
3012 .write = netxen_sysfs_write_crb,
3013};
3014
3015static const struct bin_attribute bin_attr_mem = {
3016 .attr = { .name = "mem", .mode = 0644 },
3017 .size = 0,
3018 .read = netxen_sysfs_read_mem,
3019 .write = netxen_sysfs_write_mem,
3020};
3021
3022static ssize_t
3023netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj,
3024 struct bin_attribute *attr,
3025 char *buf, loff_t offset, size_t size)
3026{
3027 struct device *dev = kobj_to_dev(kobj);
3028 struct netxen_adapter *adapter = dev_get_drvdata(dev);
3029 struct net_device *netdev = adapter->netdev;
3030 struct netxen_dimm_cfg dimm;
3031 u8 dw, rows, cols, banks, ranks;
3032 u32 val;
3033
3034 if (size < attr->size) {
3035 netdev_err(netdev, "Invalid size\n");
3036 return -EINVAL;
3037 }
3038
3039 memset(&dimm, 0, sizeof(struct netxen_dimm_cfg));
3040 val = NXRD32(adapter, NETXEN_DIMM_CAPABILITY);
3041
3042 /* Checks if DIMM info is valid. */
3043 if (val & NETXEN_DIMM_VALID_FLAG) {
3044 netdev_err(netdev, "Invalid DIMM flag\n");
3045 dimm.presence = 0xff;
3046 goto out;
3047 }
3048
3049 rows = NETXEN_DIMM_NUMROWS(val);
3050 cols = NETXEN_DIMM_NUMCOLS(val);
3051 ranks = NETXEN_DIMM_NUMRANKS(val);
3052 banks = NETXEN_DIMM_NUMBANKS(val);
3053 dw = NETXEN_DIMM_DATAWIDTH(val);
3054
3055 dimm.presence = (val & NETXEN_DIMM_PRESENT);
3056
3057 /* Checks if DIMM info is present. */
3058 if (!dimm.presence) {
3059 netdev_err(netdev, "DIMM not present\n");
3060 goto out;
3061 }
3062
3063 dimm.dimm_type = NETXEN_DIMM_TYPE(val);
3064
3065 switch (dimm.dimm_type) {
3066 case NETXEN_DIMM_TYPE_RDIMM:
3067 case NETXEN_DIMM_TYPE_UDIMM:
3068 case NETXEN_DIMM_TYPE_SO_DIMM:
3069 case NETXEN_DIMM_TYPE_Micro_DIMM:
3070 case NETXEN_DIMM_TYPE_Mini_RDIMM:
3071 case NETXEN_DIMM_TYPE_Mini_UDIMM:
3072 break;
3073 default:
3074 netdev_err(netdev, "Invalid DIMM type %x\n", dimm.dimm_type);
3075 goto out;
3076 }
3077
3078 if (val & NETXEN_DIMM_MEMTYPE_DDR2_SDRAM)
3079 dimm.mem_type = NETXEN_DIMM_MEM_DDR2_SDRAM;
3080 else
3081 dimm.mem_type = NETXEN_DIMM_MEMTYPE(val);
3082
3083 if (val & NETXEN_DIMM_SIZE) {
3084 dimm.size = NETXEN_DIMM_STD_MEM_SIZE;
3085 goto out;
3086 }
3087
3088 if (!rows) {
3089 netdev_err(netdev, "Invalid no of rows %x\n", rows);
3090 goto out;
3091 }
3092
3093 if (!cols) {
3094 netdev_err(netdev, "Invalid no of columns %x\n", cols);
3095 goto out;
3096 }
3097
3098 if (!banks) {
3099 netdev_err(netdev, "Invalid no of banks %x\n", banks);
3100 goto out;
3101 }
3102
3103 ranks += 1;
3104
3105 switch (dw) {
3106 case 0x0:
3107 dw = 32;
3108 break;
3109 case 0x1:
3110 dw = 33;
3111 break;
3112 case 0x2:
3113 dw = 36;
3114 break;
3115 case 0x3:
3116 dw = 64;
3117 break;
3118 case 0x4:
3119 dw = 72;
3120 break;
3121 case 0x5:
3122 dw = 80;
3123 break;
3124 case 0x6:
3125 dw = 128;
3126 break;
3127 case 0x7:
3128 dw = 144;
3129 break;
3130 default:
3131 netdev_err(netdev, "Invalid data-width %x\n", dw);
3132 goto out;
3133 }
3134
3135 dimm.size = ((1 << rows) * (1 << cols) * dw * banks * ranks) / 8;
3136 /* Size returned in MB. */
3137 dimm.size = (dimm.size) / 0x100000;
3138out:
3139 memcpy(buf, &dimm, sizeof(struct netxen_dimm_cfg));
3140 return sizeof(struct netxen_dimm_cfg);
3141
3142}
3143
3144static const struct bin_attribute bin_attr_dimm = {
3145 .attr = { .name = "dimm", .mode = 0644 },
3146 .size = sizeof(struct netxen_dimm_cfg),
3147 .read = netxen_sysfs_read_dimm,
3148};
3149
3150
3151static void
3152netxen_create_sysfs_entries(struct netxen_adapter *adapter)
3153{
3154 struct device *dev = &adapter->pdev->dev;
3155
3156 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
3157 /* bridged_mode control */
3158 if (device_create_file(dev, &dev_attr_bridged_mode)) {
3159 dev_warn(dev,
3160 "failed to create bridged_mode sysfs entry\n");
3161 }
3162 }
3163}
3164
3165static void
3166netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
3167{
3168 struct device *dev = &adapter->pdev->dev;
3169
3170 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
3171 device_remove_file(dev, &dev_attr_bridged_mode);
3172}
3173
3174static void
3175netxen_create_diag_entries(struct netxen_adapter *adapter)
3176{
3177 struct pci_dev *pdev = adapter->pdev;
3178 struct device *dev;
3179
3180 dev = &pdev->dev;
3181 if (device_create_file(dev, &dev_attr_diag_mode))
3182 dev_info(dev, "failed to create diag_mode sysfs entry\n");
3183 if (device_create_bin_file(dev, &bin_attr_crb))
3184 dev_info(dev, "failed to create crb sysfs entry\n");
3185 if (device_create_bin_file(dev, &bin_attr_mem))
3186 dev_info(dev, "failed to create mem sysfs entry\n");
3187 if (device_create_bin_file(dev, &bin_attr_dimm))
3188 dev_info(dev, "failed to create dimm sysfs entry\n");
3189}
3190
3191
3192static void
3193netxen_remove_diag_entries(struct netxen_adapter *adapter)
3194{
3195 struct pci_dev *pdev = adapter->pdev;
3196 struct device *dev = &pdev->dev;
3197
3198 device_remove_file(dev, &dev_attr_diag_mode);
3199 device_remove_bin_file(dev, &bin_attr_crb);
3200 device_remove_bin_file(dev, &bin_attr_mem);
3201 device_remove_bin_file(dev, &bin_attr_dimm);
3202}
3203
3204#ifdef CONFIG_INET
3205
3206#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
3207
3208static int
3209netxen_destip_supported(struct netxen_adapter *adapter)
3210{
3211 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
3212 return 0;
3213
3214 if (adapter->ahw.cut_through)
3215 return 0;
3216
3217 return 1;
3218}
3219
3220static void
3221netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3222{
3223 struct nx_ip_list *cur, *tmp_cur;
3224
3225 list_for_each_entry_safe(cur, tmp_cur, &adapter->ip_list, list) {
3226 if (master) {
3227 if (cur->master) {
3228 netxen_config_ipaddr(adapter, cur->ip_addr,
3229 NX_IP_DOWN);
3230 list_del(&cur->list);
3231 kfree(cur);
3232 }
3233 } else {
3234 netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
3235 list_del(&cur->list);
3236 kfree(cur);
3237 }
3238 }
3239}
3240
3241static bool
3242netxen_list_config_ip(struct netxen_adapter *adapter,
3243 struct in_ifaddr *ifa, unsigned long event)
3244{
3245 struct net_device *dev;
3246 struct nx_ip_list *cur, *tmp_cur;
3247 struct list_head *head;
3248 bool ret = false;
3249
3250 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3251
3252 if (dev == NULL)
3253 goto out;
3254
3255 switch (event) {
3256 case NX_IP_UP:
3257 list_for_each(head, &adapter->ip_list) {
3258 cur = list_entry(head, struct nx_ip_list, list);
3259
3260 if (cur->ip_addr == ifa->ifa_address)
3261 goto out;
3262 }
3263
3264 cur = kzalloc(sizeof(struct nx_ip_list), GFP_ATOMIC);
3265 if (cur == NULL)
3266 goto out;
3267 if (is_vlan_dev(dev))
3268 dev = vlan_dev_real_dev(dev);
3269 cur->master = !!netif_is_bond_master(dev);
3270 cur->ip_addr = ifa->ifa_address;
3271 list_add_tail(&cur->list, &adapter->ip_list);
3272 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
3273 ret = true;
3274 break;
3275 case NX_IP_DOWN:
3276 list_for_each_entry_safe(cur, tmp_cur,
3277 &adapter->ip_list, list) {
3278 if (cur->ip_addr == ifa->ifa_address) {
3279 list_del(&cur->list);
3280 kfree(cur);
3281 netxen_config_ipaddr(adapter, ifa->ifa_address,
3282 NX_IP_DOWN);
3283 ret = true;
3284 break;
3285 }
3286 }
3287 }
3288out:
3289 return ret;
3290}
3291
3292static void
3293netxen_config_indev_addr(struct netxen_adapter *adapter,
3294 struct net_device *dev, unsigned long event)
3295{
3296 struct in_device *indev;
3297
3298 if (!netxen_destip_supported(adapter))
3299 return;
3300
3301 indev = in_dev_get(dev);
3302 if (!indev)
3303 return;
3304
3305 for_ifa(indev) {
3306 switch (event) {
3307 case NETDEV_UP:
3308 netxen_list_config_ip(adapter, ifa, NX_IP_UP);
3309 break;
3310 case NETDEV_DOWN:
3311 netxen_list_config_ip(adapter, ifa, NX_IP_DOWN);
3312 break;
3313 default:
3314 break;
3315 }
3316 } endfor_ifa(indev);
3317
3318 in_dev_put(indev);
3319}
3320
3321static void
3322netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
3323
3324{
3325 struct netxen_adapter *adapter = netdev_priv(netdev);
3326 struct nx_ip_list *pos, *tmp_pos;
3327 unsigned long ip_event;
3328
3329 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3330 netxen_config_indev_addr(adapter, netdev, event);
3331
3332 list_for_each_entry_safe(pos, tmp_pos, &adapter->ip_list, list) {
3333 netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
3334 }
3335}
3336
3337static inline bool
3338netxen_config_checkdev(struct net_device *dev)
3339{
3340 struct netxen_adapter *adapter;
3341
3342 if (!is_netxen_netdev(dev))
3343 return false;
3344 adapter = netdev_priv(dev);
3345 if (!adapter)
3346 return false;
3347 if (!netxen_destip_supported(adapter))
3348 return false;
3349 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3350 return false;
3351
3352 return true;
3353}
3354
3355/**
3356 * netxen_config_master - configure addresses based on master
3357 * @dev: netxen device
3358 * @event: netdev event
3359 */
3360static void netxen_config_master(struct net_device *dev, unsigned long event)
3361{
3362 struct net_device *master, *slave;
3363 struct netxen_adapter *adapter = netdev_priv(dev);
3364
3365 rcu_read_lock();
3366 master = netdev_master_upper_dev_get_rcu(dev);
3367 /*
3368 * This is the case where the netxen nic is being
3369 * enslaved and is dev_open()ed in bond_enslave()
3370 * Now we should program the bond's (and its vlans')
3371 * addresses in the netxen NIC.
3372 */
3373 if (master && netif_is_bond_master(master) &&
3374 !netif_is_bond_slave(dev)) {
3375 netxen_config_indev_addr(adapter, master, event);
3376 for_each_netdev_rcu(&init_net, slave)
3377 if (is_vlan_dev(slave) &&
3378 vlan_dev_real_dev(slave) == master)
3379 netxen_config_indev_addr(adapter, slave, event);
3380 }
3381 rcu_read_unlock();
3382 /*
3383 * This is the case where the netxen nic is being
3384 * released and is dev_close()ed in bond_release()
3385 * just before IFF_BONDING is stripped.
3386 */
3387 if (!master && dev->priv_flags & IFF_BONDING)
3388 netxen_free_ip_list(adapter, true);
3389}
3390
3391static int netxen_netdev_event(struct notifier_block *this,
3392 unsigned long event, void *ptr)
3393{
3394 struct netxen_adapter *adapter;
3395 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3396 struct net_device *orig_dev = dev;
3397 struct net_device *slave;
3398
3399recheck:
3400 if (dev == NULL)
3401 goto done;
3402
3403 if (is_vlan_dev(dev)) {
3404 dev = vlan_dev_real_dev(dev);
3405 goto recheck;
3406 }
3407 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3408 /* If this is a bonding device, look for netxen-based slaves*/
3409 if (netif_is_bond_master(dev)) {
3410 rcu_read_lock();
3411 for_each_netdev_in_bond_rcu(dev, slave) {
3412 if (!netxen_config_checkdev(slave))
3413 continue;
3414 adapter = netdev_priv(slave);
3415 netxen_config_indev_addr(adapter,
3416 orig_dev, event);
3417 }
3418 rcu_read_unlock();
3419 } else {
3420 if (!netxen_config_checkdev(dev))
3421 goto done;
3422 adapter = netdev_priv(dev);
3423 /* Act only if the actual netxen is the target */
3424 if (orig_dev == dev)
3425 netxen_config_master(dev, event);
3426 netxen_config_indev_addr(adapter, orig_dev, event);
3427 }
3428 }
3429done:
3430 return NOTIFY_DONE;
3431}
3432
3433static int
3434netxen_inetaddr_event(struct notifier_block *this,
3435 unsigned long event, void *ptr)
3436{
3437 struct netxen_adapter *adapter;
3438 struct net_device *dev, *slave;
3439 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3440 unsigned long ip_event;
3441
3442 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3443 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3444recheck:
3445 if (dev == NULL)
3446 goto done;
3447
3448 if (is_vlan_dev(dev)) {
3449 dev = vlan_dev_real_dev(dev);
3450 goto recheck;
3451 }
3452 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3453 /* If this is a bonding device, look for netxen-based slaves*/
3454 if (netif_is_bond_master(dev)) {
3455 rcu_read_lock();
3456 for_each_netdev_in_bond_rcu(dev, slave) {
3457 if (!netxen_config_checkdev(slave))
3458 continue;
3459 adapter = netdev_priv(slave);
3460 netxen_list_config_ip(adapter, ifa, ip_event);
3461 }
3462 rcu_read_unlock();
3463 } else {
3464 if (!netxen_config_checkdev(dev))
3465 goto done;
3466 adapter = netdev_priv(dev);
3467 netxen_list_config_ip(adapter, ifa, ip_event);
3468 }
3469 }
3470done:
3471 return NOTIFY_DONE;
3472}
3473
3474static struct notifier_block netxen_netdev_cb = {
3475 .notifier_call = netxen_netdev_event,
3476};
3477
3478static struct notifier_block netxen_inetaddr_cb = {
3479 .notifier_call = netxen_inetaddr_event,
3480};
3481#else
3482static void
3483netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
3484{ }
3485static void
3486netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3487{ }
3488#endif
3489
3490static const struct pci_error_handlers netxen_err_handler = {
3491 .error_detected = netxen_io_error_detected,
3492 .slot_reset = netxen_io_slot_reset,
3493 .resume = netxen_io_resume,
3494};
3495
3496static struct pci_driver netxen_driver = {
3497 .name = netxen_nic_driver_name,
3498 .id_table = netxen_pci_tbl,
3499 .probe = netxen_nic_probe,
3500 .remove = netxen_nic_remove,
3501#ifdef CONFIG_PM
3502 .suspend = netxen_nic_suspend,
3503 .resume = netxen_nic_resume,
3504#endif
3505 .shutdown = netxen_nic_shutdown,
3506 .err_handler = &netxen_err_handler
3507};
3508
3509static int __init netxen_init_module(void)
3510{
3511 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
3512
3513#ifdef CONFIG_INET
3514 register_netdevice_notifier(&netxen_netdev_cb);
3515 register_inetaddr_notifier(&netxen_inetaddr_cb);
3516#endif
3517 return pci_register_driver(&netxen_driver);
3518}
3519
3520module_init(netxen_init_module);
3521
3522static void __exit netxen_exit_module(void)
3523{
3524 pci_unregister_driver(&netxen_driver);
3525
3526#ifdef CONFIG_INET
3527 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3528 unregister_netdevice_notifier(&netxen_netdev_cb);
3529#endif
3530}
3531
3532module_exit(netxen_exit_module);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2003 - 2009 NetXen, Inc.
4 * Copyright (C) 2009 - QLogic Corporation.
5 * All rights reserved.
6 */
7
8#include <linux/slab.h>
9#include <linux/vmalloc.h>
10#include <linux/interrupt.h>
11#include "netxen_nic_hw.h"
12
13#include "netxen_nic.h"
14
15#include <linux/dma-mapping.h>
16#include <linux/if_vlan.h>
17#include <net/ip.h>
18#include <linux/ipv6.h>
19#include <linux/inetdevice.h>
20#include <linux/sysfs.h>
21#include <linux/aer.h>
22
23MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
24MODULE_LICENSE("GPL");
25MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
26MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
27
28char netxen_nic_driver_name[] = "netxen_nic";
29static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
30 NETXEN_NIC_LINUX_VERSIONID;
31
32static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
33
34/* Default to restricted 1G auto-neg mode */
35static int wol_port_mode = 5;
36
37static int use_msi = 1;
38
39static int use_msi_x = 1;
40
41static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
42module_param(auto_fw_reset, int, 0644);
43MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
44
45static int netxen_nic_probe(struct pci_dev *pdev,
46 const struct pci_device_id *ent);
47static void netxen_nic_remove(struct pci_dev *pdev);
48static int netxen_nic_open(struct net_device *netdev);
49static int netxen_nic_close(struct net_device *netdev);
50static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
51 struct net_device *);
52static void netxen_tx_timeout(struct net_device *netdev, unsigned int txqueue);
53static void netxen_tx_timeout_task(struct work_struct *work);
54static void netxen_fw_poll_work(struct work_struct *work);
55static void netxen_schedule_work(struct netxen_adapter *adapter,
56 work_func_t func, int delay);
57static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
58static int netxen_nic_poll(struct napi_struct *napi, int budget);
59
60static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
61static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
62static void netxen_create_diag_entries(struct netxen_adapter *adapter);
63static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
64static int nx_dev_request_aer(struct netxen_adapter *adapter);
65static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
66static int netxen_can_start_firmware(struct netxen_adapter *adapter);
67
68static irqreturn_t netxen_intr(int irq, void *data);
69static irqreturn_t netxen_msi_intr(int irq, void *data);
70static irqreturn_t netxen_msix_intr(int irq, void *data);
71
72static void netxen_free_ip_list(struct netxen_adapter *, bool);
73static void netxen_restore_indev_addr(struct net_device *dev, unsigned long);
74static void netxen_nic_get_stats(struct net_device *dev,
75 struct rtnl_link_stats64 *stats);
76static int netxen_nic_set_mac(struct net_device *netdev, void *p);
77
78/* PCI Device ID Table */
79#define ENTRY(device) \
80 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
81 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
82
83static const struct pci_device_id netxen_pci_tbl[] = {
84 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
85 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
86 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
87 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
88 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
91 ENTRY(PCI_DEVICE_ID_NX3031),
92 {0,}
93};
94
95MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
96
97static uint32_t crb_cmd_producer[4] = {
98 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
99 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
100};
101
102void
103netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
104 struct nx_host_tx_ring *tx_ring)
105{
106 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
107}
108
109static uint32_t crb_cmd_consumer[4] = {
110 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
111 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
112};
113
114static inline void
115netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
116 struct nx_host_tx_ring *tx_ring)
117{
118 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
119}
120
121static uint32_t msi_tgt_status[8] = {
122 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
123 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
124 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
125 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
126};
127
128static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
129
130static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
131{
132 struct netxen_adapter *adapter = sds_ring->adapter;
133
134 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
135}
136
137static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
138{
139 struct netxen_adapter *adapter = sds_ring->adapter;
140
141 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
142
143 if (!NETXEN_IS_MSI_FAMILY(adapter))
144 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
145}
146
147static int
148netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
149{
150 int size = sizeof(struct nx_host_sds_ring) * count;
151
152 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
153
154 return recv_ctx->sds_rings == NULL;
155}
156
157static void
158netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
159{
160 kfree(recv_ctx->sds_rings);
161 recv_ctx->sds_rings = NULL;
162}
163
164static int
165netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
166{
167 int ring;
168 struct nx_host_sds_ring *sds_ring;
169 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
170
171 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
172 return -ENOMEM;
173
174 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
175 sds_ring = &recv_ctx->sds_rings[ring];
176 netif_napi_add(netdev, &sds_ring->napi, netxen_nic_poll);
177 }
178
179 return 0;
180}
181
182static void
183netxen_napi_del(struct netxen_adapter *adapter)
184{
185 int ring;
186 struct nx_host_sds_ring *sds_ring;
187 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
188
189 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
190 sds_ring = &recv_ctx->sds_rings[ring];
191 netif_napi_del(&sds_ring->napi);
192 }
193
194 netxen_free_sds_rings(&adapter->recv_ctx);
195}
196
197static void
198netxen_napi_enable(struct netxen_adapter *adapter)
199{
200 int ring;
201 struct nx_host_sds_ring *sds_ring;
202 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
203
204 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
205 sds_ring = &recv_ctx->sds_rings[ring];
206 napi_enable(&sds_ring->napi);
207 netxen_nic_enable_int(sds_ring);
208 }
209}
210
211static void
212netxen_napi_disable(struct netxen_adapter *adapter)
213{
214 int ring;
215 struct nx_host_sds_ring *sds_ring;
216 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
217
218 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
219 sds_ring = &recv_ctx->sds_rings[ring];
220 netxen_nic_disable_int(sds_ring);
221 napi_synchronize(&sds_ring->napi);
222 napi_disable(&sds_ring->napi);
223 }
224}
225
226static int nx_set_dma_mask(struct netxen_adapter *adapter)
227{
228 struct pci_dev *pdev = adapter->pdev;
229 uint64_t mask, cmask;
230
231 adapter->pci_using_dac = 0;
232
233 mask = DMA_BIT_MASK(32);
234 cmask = DMA_BIT_MASK(32);
235
236 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
237#ifndef CONFIG_IA64
238 mask = DMA_BIT_MASK(35);
239#endif
240 } else {
241 mask = DMA_BIT_MASK(39);
242 cmask = mask;
243 }
244
245 if (dma_set_mask(&pdev->dev, mask) == 0 &&
246 dma_set_coherent_mask(&pdev->dev, cmask) == 0) {
247 adapter->pci_using_dac = 1;
248 return 0;
249 }
250
251 return -EIO;
252}
253
254/* Update addressable range if firmware supports it */
255static int
256nx_update_dma_mask(struct netxen_adapter *adapter)
257{
258 int change, shift, err;
259 uint64_t mask, old_mask, old_cmask;
260 struct pci_dev *pdev = adapter->pdev;
261
262 change = 0;
263
264 shift = NXRD32(adapter, CRB_DMA_SHIFT);
265 if (shift > 32)
266 return 0;
267
268 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
269 change = 1;
270 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
271 change = 1;
272
273 if (change) {
274 old_mask = pdev->dma_mask;
275 old_cmask = pdev->dev.coherent_dma_mask;
276
277 mask = DMA_BIT_MASK(32+shift);
278
279 err = dma_set_mask(&pdev->dev, mask);
280 if (err)
281 goto err_out;
282
283 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
284
285 err = dma_set_coherent_mask(&pdev->dev, mask);
286 if (err)
287 goto err_out;
288 }
289 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
290 }
291
292 return 0;
293
294err_out:
295 dma_set_mask(&pdev->dev, old_mask);
296 dma_set_coherent_mask(&pdev->dev, old_cmask);
297 return err;
298}
299
300static int
301netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
302{
303 u32 val, timeout;
304
305 if (first_boot == 0x55555555) {
306 /* This is the first boot after power up */
307 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
308
309 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
310 return 0;
311
312 /* PCI bus master workaround */
313 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
314 if (!(first_boot & 0x4)) {
315 first_boot |= 0x4;
316 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
317 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
318 }
319
320 /* This is the first boot after power up */
321 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
322 if (first_boot != 0x80000f) {
323 /* clear the register for future unloads/loads */
324 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
325 return -EIO;
326 }
327
328 /* Start P2 boot loader */
329 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
330 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
331 timeout = 0;
332 do {
333 msleep(1);
334 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
335
336 if (++timeout > 5000)
337 return -EIO;
338
339 } while (val == NETXEN_BDINFO_MAGIC);
340 }
341 return 0;
342}
343
344static void netxen_set_port_mode(struct netxen_adapter *adapter)
345{
346 u32 val, data;
347
348 val = adapter->ahw.board_type;
349 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
350 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
351 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
352 data = NETXEN_PORT_MODE_802_3_AP;
353 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
354 } else if (port_mode == NETXEN_PORT_MODE_XG) {
355 data = NETXEN_PORT_MODE_XG;
356 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
357 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
358 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
359 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
360 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
361 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
362 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
363 } else {
364 data = NETXEN_PORT_MODE_AUTO_NEG;
365 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
366 }
367
368 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
369 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
370 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
371 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
372 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
373 }
374 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
375 }
376}
377
378#define PCI_CAP_ID_GEN 0x10
379
380static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
381{
382 u32 pdevfuncsave;
383 u32 c8c9value = 0;
384 u32 chicken = 0;
385 u32 control = 0;
386 int i, pos;
387 struct pci_dev *pdev;
388
389 pdev = adapter->pdev;
390
391 chicken = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3));
392 /* clear chicken3.25:24 */
393 chicken &= 0xFCFFFFFF;
394 /*
395 * if gen1 and B0, set F1020 - if gen 2, do nothing
396 * if gen2 set to F1000
397 */
398 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
399 if (pos == 0xC0) {
400 pci_read_config_dword(pdev, pos + 0x10, &control);
401 if ((control & 0x000F0000) != 0x00020000) {
402 /* set chicken3.24 if gen1 */
403 chicken |= 0x01000000;
404 }
405 dev_info(&adapter->pdev->dev, "Gen2 strapping detected\n");
406 c8c9value = 0xF1000;
407 } else {
408 /* set chicken3.24 if gen1 */
409 chicken |= 0x01000000;
410 dev_info(&adapter->pdev->dev, "Gen1 strapping detected\n");
411 if (adapter->ahw.revision_id == NX_P3_B0)
412 c8c9value = 0xF1020;
413 else
414 c8c9value = 0;
415 }
416
417 NXWR32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3), chicken);
418
419 if (!c8c9value)
420 return;
421
422 pdevfuncsave = pdev->devfn;
423 if (pdevfuncsave & 0x07)
424 return;
425
426 for (i = 0; i < 8; i++) {
427 pci_read_config_dword(pdev, pos + 8, &control);
428 pci_read_config_dword(pdev, pos + 8, &control);
429 pci_write_config_dword(pdev, pos + 8, c8c9value);
430 pdev->devfn++;
431 }
432 pdev->devfn = pdevfuncsave;
433}
434
435static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
436{
437 u32 control;
438
439 if (pdev->msix_cap) {
440 pci_read_config_dword(pdev, pdev->msix_cap, &control);
441 if (enable)
442 control |= PCI_MSIX_FLAGS_ENABLE;
443 else
444 control = 0;
445 pci_write_config_dword(pdev, pdev->msix_cap, control);
446 }
447}
448
449static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
450{
451 int i;
452
453 for (i = 0; i < count; i++)
454 adapter->msix_entries[i].entry = i;
455}
456
457static int
458netxen_read_mac_addr(struct netxen_adapter *adapter)
459{
460 int i;
461 unsigned char *p;
462 u64 mac_addr;
463 struct net_device *netdev = adapter->netdev;
464 struct pci_dev *pdev = adapter->pdev;
465 u8 addr[ETH_ALEN];
466
467 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
468 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
469 return -EIO;
470 } else {
471 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
472 return -EIO;
473 }
474
475 p = (unsigned char *)&mac_addr;
476 for (i = 0; i < 6; i++)
477 addr[i] = *(p + 5 - i);
478 eth_hw_addr_set(netdev, addr);
479
480 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
481
482 /* set station address */
483
484 if (!is_valid_ether_addr(netdev->dev_addr))
485 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
486
487 return 0;
488}
489
490static int netxen_nic_set_mac(struct net_device *netdev, void *p)
491{
492 struct netxen_adapter *adapter = netdev_priv(netdev);
493 struct sockaddr *addr = p;
494
495 if (!is_valid_ether_addr(addr->sa_data))
496 return -EADDRNOTAVAIL;
497
498 if (netif_running(netdev)) {
499 netif_device_detach(netdev);
500 netxen_napi_disable(adapter);
501 }
502
503 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
504 eth_hw_addr_set(netdev, addr->sa_data);
505 adapter->macaddr_set(adapter, addr->sa_data);
506
507 if (netif_running(netdev)) {
508 netif_device_attach(netdev);
509 netxen_napi_enable(adapter);
510 }
511 return 0;
512}
513
514static void netxen_set_multicast_list(struct net_device *dev)
515{
516 struct netxen_adapter *adapter = netdev_priv(dev);
517
518 adapter->set_multi(dev);
519}
520
521static netdev_features_t netxen_fix_features(struct net_device *dev,
522 netdev_features_t features)
523{
524 if (!(features & NETIF_F_RXCSUM)) {
525 netdev_info(dev, "disabling LRO as RXCSUM is off\n");
526
527 features &= ~NETIF_F_LRO;
528 }
529
530 return features;
531}
532
533static int netxen_set_features(struct net_device *dev,
534 netdev_features_t features)
535{
536 struct netxen_adapter *adapter = netdev_priv(dev);
537 int hw_lro;
538
539 if (!((dev->features ^ features) & NETIF_F_LRO))
540 return 0;
541
542 hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
543 : NETXEN_NIC_LRO_DISABLED;
544
545 if (netxen_config_hw_lro(adapter, hw_lro))
546 return -EIO;
547
548 if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
549 return -EIO;
550
551 return 0;
552}
553
554static const struct net_device_ops netxen_netdev_ops = {
555 .ndo_open = netxen_nic_open,
556 .ndo_stop = netxen_nic_close,
557 .ndo_start_xmit = netxen_nic_xmit_frame,
558 .ndo_get_stats64 = netxen_nic_get_stats,
559 .ndo_validate_addr = eth_validate_addr,
560 .ndo_set_rx_mode = netxen_set_multicast_list,
561 .ndo_set_mac_address = netxen_nic_set_mac,
562 .ndo_change_mtu = netxen_nic_change_mtu,
563 .ndo_tx_timeout = netxen_tx_timeout,
564 .ndo_fix_features = netxen_fix_features,
565 .ndo_set_features = netxen_set_features,
566};
567
568static inline void netxen_set_interrupt_mode(struct netxen_adapter *adapter,
569 u32 mode)
570{
571 NXWR32(adapter, NETXEN_INTR_MODE_REG, mode);
572}
573
574static inline u32 netxen_get_interrupt_mode(struct netxen_adapter *adapter)
575{
576 return NXRD32(adapter, NETXEN_INTR_MODE_REG);
577}
578
579static void
580netxen_initialize_interrupt_registers(struct netxen_adapter *adapter)
581{
582 struct netxen_legacy_intr_set *legacy_intrp;
583 u32 tgt_status_reg, int_state_reg;
584
585 if (adapter->ahw.revision_id >= NX_P3_B0)
586 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
587 else
588 legacy_intrp = &legacy_intr[0];
589
590 tgt_status_reg = legacy_intrp->tgt_status_reg;
591 int_state_reg = ISR_INT_STATE_REG;
592
593 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
594 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, tgt_status_reg);
595 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
596 legacy_intrp->tgt_mask_reg);
597 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
598 legacy_intrp->pci_int_reg);
599 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
600
601 if (adapter->ahw.revision_id >= NX_P3_B1)
602 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
603 int_state_reg);
604 else
605 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
606 CRB_INT_VECTOR);
607}
608
609static int netxen_setup_msi_interrupts(struct netxen_adapter *adapter,
610 int num_msix)
611{
612 struct pci_dev *pdev = adapter->pdev;
613 u32 value;
614 int err;
615
616 if (adapter->msix_supported) {
617 netxen_init_msix_entries(adapter, num_msix);
618 err = pci_enable_msix_range(pdev, adapter->msix_entries,
619 num_msix, num_msix);
620 if (err > 0) {
621 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
622 netxen_set_msix_bit(pdev, 1);
623
624 if (adapter->rss_supported)
625 adapter->max_sds_rings = num_msix;
626
627 dev_info(&pdev->dev, "using msi-x interrupts\n");
628 return 0;
629 }
630 /* fall through for msi */
631 }
632
633 if (use_msi && !pci_enable_msi(pdev)) {
634 value = msi_tgt_status[adapter->ahw.pci_func];
635 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
636 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, value);
637 adapter->msix_entries[0].vector = pdev->irq;
638 dev_info(&pdev->dev, "using msi interrupts\n");
639 return 0;
640 }
641
642 dev_err(&pdev->dev, "Failed to acquire MSI-X/MSI interrupt vector\n");
643 return -EIO;
644}
645
646static int netxen_setup_intr(struct netxen_adapter *adapter)
647{
648 struct pci_dev *pdev = adapter->pdev;
649 int num_msix;
650
651 if (adapter->rss_supported)
652 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
653 MSIX_ENTRIES_PER_ADAPTER : 2;
654 else
655 num_msix = 1;
656
657 adapter->max_sds_rings = 1;
658 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
659
660 netxen_initialize_interrupt_registers(adapter);
661 netxen_set_msix_bit(pdev, 0);
662
663 if (adapter->portnum == 0) {
664 if (!netxen_setup_msi_interrupts(adapter, num_msix))
665 netxen_set_interrupt_mode(adapter, NETXEN_MSI_MODE);
666 else
667 netxen_set_interrupt_mode(adapter, NETXEN_INTX_MODE);
668 } else {
669 if (netxen_get_interrupt_mode(adapter) == NETXEN_MSI_MODE &&
670 netxen_setup_msi_interrupts(adapter, num_msix)) {
671 dev_err(&pdev->dev, "Co-existence of MSI-X/MSI and INTx interrupts is not supported\n");
672 return -EIO;
673 }
674 }
675
676 if (!NETXEN_IS_MSI_FAMILY(adapter)) {
677 adapter->msix_entries[0].vector = pdev->irq;
678 dev_info(&pdev->dev, "using legacy interrupts\n");
679 }
680 return 0;
681}
682
683static void
684netxen_teardown_intr(struct netxen_adapter *adapter)
685{
686 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
687 pci_disable_msix(adapter->pdev);
688 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
689 pci_disable_msi(adapter->pdev);
690}
691
692static void
693netxen_cleanup_pci_map(struct netxen_adapter *adapter)
694{
695 if (adapter->ahw.db_base != NULL)
696 iounmap(adapter->ahw.db_base);
697 if (adapter->ahw.pci_base0 != NULL)
698 iounmap(adapter->ahw.pci_base0);
699 if (adapter->ahw.pci_base1 != NULL)
700 iounmap(adapter->ahw.pci_base1);
701 if (adapter->ahw.pci_base2 != NULL)
702 iounmap(adapter->ahw.pci_base2);
703}
704
705static int
706netxen_setup_pci_map(struct netxen_adapter *adapter)
707{
708 void __iomem *db_ptr = NULL;
709
710 resource_size_t mem_base, db_base;
711 unsigned long mem_len, db_len = 0;
712
713 struct pci_dev *pdev = adapter->pdev;
714 int pci_func = adapter->ahw.pci_func;
715 struct netxen_hardware_context *ahw = &adapter->ahw;
716
717 int err = 0;
718
719 /*
720 * Set the CRB window to invalid. If any register in window 0 is
721 * accessed it should set the window to 0 and then reset it to 1.
722 */
723 adapter->ahw.crb_win = -1;
724 adapter->ahw.ocm_win = -1;
725
726 /* remap phys address */
727 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
728 mem_len = pci_resource_len(pdev, 0);
729
730 /* 128 Meg of memory */
731 if (mem_len == NETXEN_PCI_128MB_SIZE) {
732
733 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
734 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
735 SECOND_PAGE_GROUP_SIZE);
736 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
737 THIRD_PAGE_GROUP_SIZE);
738 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
739 ahw->pci_base2 == NULL) {
740 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
741 err = -EIO;
742 goto err_out;
743 }
744
745 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
746
747 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
748
749 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
750 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
751 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
752 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
753 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
754 err = -EIO;
755 goto err_out;
756 }
757
758 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
759
760 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
761 if (ahw->pci_base0 == NULL) {
762 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
763 return -EIO;
764 }
765 ahw->pci_len0 = mem_len;
766 } else {
767 return -EIO;
768 }
769
770 netxen_setup_hwops(adapter);
771
772 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
773
774 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
775 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
776 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
777
778 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
779 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
780 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
781 }
782
783 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
784 goto skip_doorbell;
785
786 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
787 db_len = pci_resource_len(pdev, 4);
788
789 if (db_len == 0) {
790 printk(KERN_ERR "%s: doorbell is disabled\n",
791 netxen_nic_driver_name);
792 err = -EIO;
793 goto err_out;
794 }
795
796 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
797 if (!db_ptr) {
798 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
799 netxen_nic_driver_name);
800 err = -EIO;
801 goto err_out;
802 }
803
804skip_doorbell:
805 adapter->ahw.db_base = db_ptr;
806 adapter->ahw.db_len = db_len;
807 return 0;
808
809err_out:
810 netxen_cleanup_pci_map(adapter);
811 return err;
812}
813
814static void
815netxen_check_options(struct netxen_adapter *adapter)
816{
817 u32 fw_major, fw_minor, fw_build, prev_fw_version;
818 char brd_name[NETXEN_MAX_SHORT_NAME];
819 char serial_num[32];
820 int i, offset, val, err;
821 __le32 *ptr32;
822 struct pci_dev *pdev = adapter->pdev;
823
824 adapter->driver_mismatch = 0;
825
826 ptr32 = (__le32 *)&serial_num;
827 offset = NX_FW_SERIAL_NUM_OFFSET;
828 for (i = 0; i < 8; i++) {
829 err = netxen_rom_fast_read(adapter, offset, &val);
830 if (err) {
831 dev_err(&pdev->dev, "error reading board info\n");
832 adapter->driver_mismatch = 1;
833 return;
834 }
835 ptr32[i] = cpu_to_le32(val);
836 offset += sizeof(u32);
837 }
838
839 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
840 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
841 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
842 prev_fw_version = adapter->fw_version;
843 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
844
845 /* Get FW Mini Coredump template and store it */
846 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
847 if (adapter->mdump.md_template == NULL ||
848 adapter->fw_version > prev_fw_version) {
849 kfree(adapter->mdump.md_template);
850 adapter->mdump.md_template = NULL;
851 err = netxen_setup_minidump(adapter);
852 if (err)
853 dev_err(&adapter->pdev->dev,
854 "Failed to setup minidump rcode = %d\n", err);
855 }
856 }
857
858 if (adapter->portnum == 0) {
859 if (netxen_nic_get_brd_name_by_type(adapter->ahw.board_type,
860 brd_name))
861 strcpy(serial_num, "Unknown");
862
863 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
864 module_name(THIS_MODULE),
865 brd_name, serial_num, adapter->ahw.revision_id);
866 }
867
868 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
869 adapter->driver_mismatch = 1;
870 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
871 fw_major, fw_minor, fw_build);
872 return;
873 }
874
875 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
876 i = NXRD32(adapter, NETXEN_SRE_MISC);
877 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
878 }
879
880 dev_info(&pdev->dev, "Driver v%s, firmware v%d.%d.%d [%s]\n",
881 NETXEN_NIC_LINUX_VERSIONID, fw_major, fw_minor, fw_build,
882 adapter->ahw.cut_through ? "cut-through" : "legacy");
883
884 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
885 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
886
887 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
888 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
889 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
890 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
891 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
892 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
893 }
894
895 adapter->msix_supported = 0;
896 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
897 adapter->msix_supported = !!use_msi_x;
898 adapter->rss_supported = !!use_msi_x;
899 } else {
900 u32 flashed_ver = 0;
901 netxen_rom_fast_read(adapter,
902 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
903 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
904
905 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
906 switch (adapter->ahw.board_type) {
907 case NETXEN_BRDTYPE_P2_SB31_10G:
908 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
909 adapter->msix_supported = !!use_msi_x;
910 adapter->rss_supported = !!use_msi_x;
911 break;
912 default:
913 break;
914 }
915 }
916 }
917
918 adapter->num_txd = MAX_CMD_DESCRIPTORS;
919
920 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
921 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
922 adapter->max_rds_rings = 3;
923 } else {
924 adapter->num_lro_rxd = 0;
925 adapter->max_rds_rings = 2;
926 }
927}
928
929static int
930netxen_start_firmware(struct netxen_adapter *adapter)
931{
932 int val, err, first_boot;
933 struct pci_dev *pdev = adapter->pdev;
934
935 /* required for NX2031 dummy dma */
936 err = nx_set_dma_mask(adapter);
937 if (err)
938 return err;
939
940 err = netxen_can_start_firmware(adapter);
941
942 if (err < 0)
943 return err;
944
945 if (!err)
946 goto wait_init;
947
948 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
949
950 err = netxen_check_hw_init(adapter, first_boot);
951 if (err) {
952 dev_err(&pdev->dev, "error in init HW init sequence\n");
953 return err;
954 }
955
956 netxen_request_firmware(adapter);
957
958 err = netxen_need_fw_reset(adapter);
959 if (err < 0)
960 goto err_out;
961 if (err == 0)
962 goto pcie_strap_init;
963
964 if (first_boot != 0x55555555) {
965 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
966 netxen_pinit_from_rom(adapter);
967 msleep(1);
968 }
969
970 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
971 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
972 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
973
974 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
975 netxen_set_port_mode(adapter);
976
977 err = netxen_load_firmware(adapter);
978 if (err)
979 goto err_out;
980
981 netxen_release_firmware(adapter);
982
983 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
984
985 /* Initialize multicast addr pool owners */
986 val = 0x7654;
987 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
988 val |= 0x0f000000;
989 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
990
991 }
992
993 err = netxen_init_dummy_dma(adapter);
994 if (err)
995 goto err_out;
996
997 /*
998 * Tell the hardware our version number.
999 */
1000 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
1001 | ((_NETXEN_NIC_LINUX_MINOR << 8))
1002 | (_NETXEN_NIC_LINUX_SUBVERSION);
1003 NXWR32(adapter, CRB_DRIVER_VERSION, val);
1004
1005pcie_strap_init:
1006 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1007 netxen_pcie_strap_init(adapter);
1008
1009wait_init:
1010 /* Handshake with the card before we register the devices. */
1011 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
1012 if (err) {
1013 netxen_free_dummy_dma(adapter);
1014 goto err_out;
1015 }
1016
1017 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
1018
1019 nx_update_dma_mask(adapter);
1020
1021 netxen_check_options(adapter);
1022
1023 adapter->need_fw_reset = 0;
1024
1025 /* fall through and release firmware */
1026
1027err_out:
1028 netxen_release_firmware(adapter);
1029 return err;
1030}
1031
1032static int
1033netxen_nic_request_irq(struct netxen_adapter *adapter)
1034{
1035 irq_handler_t handler;
1036 struct nx_host_sds_ring *sds_ring;
1037 int err, ring;
1038
1039 unsigned long flags = 0;
1040 struct net_device *netdev = adapter->netdev;
1041 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1042
1043 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1044 handler = netxen_msix_intr;
1045 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1046 handler = netxen_msi_intr;
1047 else {
1048 flags |= IRQF_SHARED;
1049 handler = netxen_intr;
1050 }
1051 adapter->irq = netdev->irq;
1052
1053 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1054 sds_ring = &recv_ctx->sds_rings[ring];
1055 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
1056 err = request_irq(sds_ring->irq, handler,
1057 flags, sds_ring->name, sds_ring);
1058 if (err)
1059 return err;
1060 }
1061
1062 return 0;
1063}
1064
1065static void
1066netxen_nic_free_irq(struct netxen_adapter *adapter)
1067{
1068 int ring;
1069 struct nx_host_sds_ring *sds_ring;
1070
1071 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1072
1073 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1074 sds_ring = &recv_ctx->sds_rings[ring];
1075 free_irq(sds_ring->irq, sds_ring);
1076 }
1077}
1078
1079static void
1080netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
1081{
1082 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
1083 adapter->coal.normal.data.rx_time_us =
1084 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
1085 adapter->coal.normal.data.rx_packets =
1086 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
1087 adapter->coal.normal.data.tx_time_us =
1088 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
1089 adapter->coal.normal.data.tx_packets =
1090 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
1091}
1092
1093/* with rtnl_lock */
1094static int
1095__netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1096{
1097 int err;
1098
1099 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1100 return -EIO;
1101
1102 err = adapter->init_port(adapter, adapter->physical_port);
1103 if (err) {
1104 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1105 netxen_nic_driver_name, adapter->portnum);
1106 return err;
1107 }
1108 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1109 adapter->macaddr_set(adapter, adapter->mac_addr);
1110
1111 adapter->set_multi(netdev);
1112 adapter->set_mtu(adapter, netdev->mtu);
1113
1114 adapter->ahw.linkup = 0;
1115
1116 if (adapter->max_sds_rings > 1)
1117 netxen_config_rss(adapter, 1);
1118
1119 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1120 netxen_config_intr_coalesce(adapter);
1121
1122 if (netdev->features & NETIF_F_LRO)
1123 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1124
1125 netxen_napi_enable(adapter);
1126
1127 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1128 netxen_linkevent_request(adapter, 1);
1129 else
1130 netxen_nic_set_link_parameters(adapter);
1131
1132 set_bit(__NX_DEV_UP, &adapter->state);
1133 return 0;
1134}
1135
1136/* Usage: During resume and firmware recovery module.*/
1137
1138static inline int
1139netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1140{
1141 int err = 0;
1142
1143 rtnl_lock();
1144 if (netif_running(netdev))
1145 err = __netxen_nic_up(adapter, netdev);
1146 rtnl_unlock();
1147
1148 return err;
1149}
1150
1151/* with rtnl_lock */
1152static void
1153__netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1154{
1155 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1156 return;
1157
1158 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1159 return;
1160
1161 smp_mb();
1162 netif_carrier_off(netdev);
1163 netif_tx_disable(netdev);
1164
1165 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1166 netxen_linkevent_request(adapter, 0);
1167
1168 if (adapter->stop_port)
1169 adapter->stop_port(adapter);
1170
1171 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1172 netxen_p3_free_mac_list(adapter);
1173
1174 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1175
1176 netxen_napi_disable(adapter);
1177
1178 netxen_release_tx_buffers(adapter);
1179}
1180
1181/* Usage: During suspend and firmware recovery module */
1182
1183static inline void
1184netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1185{
1186 rtnl_lock();
1187 if (netif_running(netdev))
1188 __netxen_nic_down(adapter, netdev);
1189 rtnl_unlock();
1190
1191}
1192
1193static int
1194netxen_nic_attach(struct netxen_adapter *adapter)
1195{
1196 struct net_device *netdev = adapter->netdev;
1197 struct pci_dev *pdev = adapter->pdev;
1198 int err, ring;
1199 struct nx_host_rds_ring *rds_ring;
1200 struct nx_host_tx_ring *tx_ring;
1201 u32 capab2;
1202
1203 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1204 return 0;
1205
1206 err = netxen_init_firmware(adapter);
1207 if (err)
1208 return err;
1209
1210 adapter->flags &= ~NETXEN_FW_MSS_CAP;
1211 if (adapter->capabilities & NX_FW_CAPABILITY_MORE_CAPS) {
1212 capab2 = NXRD32(adapter, CRB_FW_CAPABILITIES_2);
1213 if (capab2 & NX_FW_CAPABILITY_2_LRO_MAX_TCP_SEG)
1214 adapter->flags |= NETXEN_FW_MSS_CAP;
1215 }
1216
1217 err = netxen_napi_add(adapter, netdev);
1218 if (err)
1219 return err;
1220
1221 err = netxen_alloc_sw_resources(adapter);
1222 if (err) {
1223 printk(KERN_ERR "%s: Error in setting sw resources\n",
1224 netdev->name);
1225 return err;
1226 }
1227
1228 err = netxen_alloc_hw_resources(adapter);
1229 if (err) {
1230 printk(KERN_ERR "%s: Error in setting hw resources\n",
1231 netdev->name);
1232 goto err_out_free_sw;
1233 }
1234
1235 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1236 tx_ring = adapter->tx_ring;
1237 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1238 crb_cmd_producer[adapter->portnum]);
1239 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1240 crb_cmd_consumer[adapter->portnum]);
1241
1242 tx_ring->producer = 0;
1243 tx_ring->sw_consumer = 0;
1244
1245 netxen_nic_update_cmd_producer(adapter, tx_ring);
1246 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1247 }
1248
1249 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1250 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1251 netxen_post_rx_buffers(adapter, ring, rds_ring);
1252 }
1253
1254 err = netxen_nic_request_irq(adapter);
1255 if (err) {
1256 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1257 netdev->name);
1258 goto err_out_free_rxbuf;
1259 }
1260
1261 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1262 netxen_nic_init_coalesce_defaults(adapter);
1263
1264 netxen_create_sysfs_entries(adapter);
1265
1266 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1267 return 0;
1268
1269err_out_free_rxbuf:
1270 netxen_release_rx_buffers(adapter);
1271 netxen_free_hw_resources(adapter);
1272err_out_free_sw:
1273 netxen_free_sw_resources(adapter);
1274 return err;
1275}
1276
1277static void
1278netxen_nic_detach(struct netxen_adapter *adapter)
1279{
1280 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1281 return;
1282
1283 netxen_remove_sysfs_entries(adapter);
1284
1285 netxen_free_hw_resources(adapter);
1286 netxen_release_rx_buffers(adapter);
1287 netxen_nic_free_irq(adapter);
1288 netxen_napi_del(adapter);
1289 netxen_free_sw_resources(adapter);
1290
1291 adapter->is_up = 0;
1292}
1293
1294int
1295netxen_nic_reset_context(struct netxen_adapter *adapter)
1296{
1297 int err = 0;
1298 struct net_device *netdev = adapter->netdev;
1299
1300 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1301 return -EBUSY;
1302
1303 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1304
1305 netif_device_detach(netdev);
1306
1307 if (netif_running(netdev))
1308 __netxen_nic_down(adapter, netdev);
1309
1310 netxen_nic_detach(adapter);
1311
1312 if (netif_running(netdev)) {
1313 err = netxen_nic_attach(adapter);
1314 if (!err)
1315 err = __netxen_nic_up(adapter, netdev);
1316
1317 if (err)
1318 goto done;
1319 }
1320
1321 netif_device_attach(netdev);
1322 }
1323
1324done:
1325 clear_bit(__NX_RESETTING, &adapter->state);
1326 return err;
1327}
1328
1329static int
1330netxen_setup_netdev(struct netxen_adapter *adapter,
1331 struct net_device *netdev)
1332{
1333 int err = 0;
1334 struct pci_dev *pdev = adapter->pdev;
1335
1336 adapter->mc_enabled = 0;
1337 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1338 adapter->max_mc_count = 38;
1339 else
1340 adapter->max_mc_count = 16;
1341
1342 netdev->netdev_ops = &netxen_netdev_ops;
1343 netdev->watchdog_timeo = 5*HZ;
1344
1345 netxen_nic_change_mtu(netdev, netdev->mtu);
1346
1347 netdev->ethtool_ops = &netxen_nic_ethtool_ops;
1348
1349 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1350 NETIF_F_RXCSUM;
1351
1352 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1353 netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1354
1355 netdev->vlan_features |= netdev->hw_features;
1356
1357 if (adapter->pci_using_dac) {
1358 netdev->features |= NETIF_F_HIGHDMA;
1359 netdev->vlan_features |= NETIF_F_HIGHDMA;
1360 }
1361
1362 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1363 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
1364
1365 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1366 netdev->hw_features |= NETIF_F_LRO;
1367
1368 netdev->features |= netdev->hw_features;
1369
1370 netdev->irq = adapter->msix_entries[0].vector;
1371
1372 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1373
1374 if (netxen_read_mac_addr(adapter))
1375 dev_warn(&pdev->dev, "failed to read mac addr\n");
1376
1377 netif_carrier_off(netdev);
1378
1379 err = register_netdev(netdev);
1380 if (err) {
1381 dev_err(&pdev->dev, "failed to register net device\n");
1382 return err;
1383 }
1384
1385 return 0;
1386}
1387
1388#define NETXEN_ULA_ADAPTER_KEY (0xdaddad01)
1389#define NETXEN_NON_ULA_ADAPTER_KEY (0xdaddad00)
1390
1391static void netxen_read_ula_info(struct netxen_adapter *adapter)
1392{
1393 u32 temp;
1394
1395 /* Print ULA info only once for an adapter */
1396 if (adapter->portnum != 0)
1397 return;
1398
1399 temp = NXRD32(adapter, NETXEN_ULA_KEY);
1400 switch (temp) {
1401 case NETXEN_ULA_ADAPTER_KEY:
1402 dev_info(&adapter->pdev->dev, "ULA adapter");
1403 break;
1404 case NETXEN_NON_ULA_ADAPTER_KEY:
1405 dev_info(&adapter->pdev->dev, "non ULA adapter");
1406 break;
1407 default:
1408 break;
1409 }
1410
1411 return;
1412}
1413
1414#ifdef CONFIG_PCIEAER
1415static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1416{
1417 struct pci_dev *pdev = adapter->pdev;
1418 struct pci_dev *root = pdev->bus->self;
1419 u32 aer_pos;
1420
1421 /* root bus? */
1422 if (!root)
1423 return;
1424
1425 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1426 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1427 return;
1428
1429 if (pci_pcie_type(root) != PCI_EXP_TYPE_ROOT_PORT)
1430 return;
1431
1432 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1433 if (!aer_pos)
1434 return;
1435
1436 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1437}
1438#endif
1439
1440static int
1441netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1442{
1443 struct net_device *netdev = NULL;
1444 struct netxen_adapter *adapter = NULL;
1445 int i = 0, err;
1446 int pci_func_id = PCI_FUNC(pdev->devfn);
1447 uint8_t revision_id;
1448 u32 val;
1449
1450 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1451 pr_warn("%s: chip revisions between 0x%x-0x%x will not be enabled\n",
1452 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1453 return -ENODEV;
1454 }
1455
1456 if ((err = pci_enable_device(pdev)))
1457 return err;
1458
1459 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1460 err = -ENODEV;
1461 goto err_out_disable_pdev;
1462 }
1463
1464 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1465 goto err_out_disable_pdev;
1466
1467 if (NX_IS_REVISION_P3(pdev->revision))
1468 pci_enable_pcie_error_reporting(pdev);
1469
1470 pci_set_master(pdev);
1471
1472 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1473 if(!netdev) {
1474 err = -ENOMEM;
1475 goto err_out_free_res;
1476 }
1477
1478 SET_NETDEV_DEV(netdev, &pdev->dev);
1479
1480 adapter = netdev_priv(netdev);
1481 adapter->netdev = netdev;
1482 adapter->pdev = pdev;
1483 adapter->ahw.pci_func = pci_func_id;
1484
1485 revision_id = pdev->revision;
1486 adapter->ahw.revision_id = revision_id;
1487
1488 rwlock_init(&adapter->ahw.crb_lock);
1489 spin_lock_init(&adapter->ahw.mem_lock);
1490
1491 spin_lock_init(&adapter->tx_clean_lock);
1492 INIT_LIST_HEAD(&adapter->mac_list);
1493 INIT_LIST_HEAD(&adapter->ip_list);
1494
1495 err = netxen_setup_pci_map(adapter);
1496 if (err)
1497 goto err_out_free_netdev;
1498
1499 /* This will be reset for mezz cards */
1500 adapter->portnum = pci_func_id;
1501
1502 err = netxen_nic_get_board_info(adapter);
1503 if (err) {
1504 dev_err(&pdev->dev, "Error getting board config info.\n");
1505 goto err_out_iounmap;
1506 }
1507
1508#ifdef CONFIG_PCIEAER
1509 netxen_mask_aer_correctable(adapter);
1510#endif
1511
1512 /* Mezz cards have PCI function 0,2,3 enabled */
1513 switch (adapter->ahw.board_type) {
1514 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1515 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1516 if (pci_func_id >= 2)
1517 adapter->portnum = pci_func_id - 2;
1518 break;
1519 default:
1520 break;
1521 }
1522
1523 err = netxen_check_flash_fw_compatibility(adapter);
1524 if (err)
1525 goto err_out_iounmap;
1526
1527 if (adapter->portnum == 0) {
1528 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1529 if (val != 0xffffffff && val != 0) {
1530 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1531 adapter->need_fw_reset = 1;
1532 }
1533 }
1534
1535 err = netxen_start_firmware(adapter);
1536 if (err)
1537 goto err_out_decr_ref;
1538
1539 /*
1540 * See if the firmware gave us a virtual-physical port mapping.
1541 */
1542 adapter->physical_port = adapter->portnum;
1543 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1544 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1545 if (i != 0x55555555)
1546 adapter->physical_port = i;
1547 }
1548
1549 /* MTU range: 0 - 8000 (P2) or 9600 (P3) */
1550 netdev->min_mtu = 0;
1551 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1552 netdev->max_mtu = P3_MAX_MTU;
1553 else
1554 netdev->max_mtu = P2_MAX_MTU;
1555
1556 netxen_nic_clear_stats(adapter);
1557
1558 err = netxen_setup_intr(adapter);
1559
1560 if (err) {
1561 dev_err(&adapter->pdev->dev,
1562 "Failed to setup interrupts, error = %d\n", err);
1563 goto err_out_disable_msi;
1564 }
1565
1566 netxen_read_ula_info(adapter);
1567
1568 err = netxen_setup_netdev(adapter, netdev);
1569 if (err)
1570 goto err_out_disable_msi;
1571
1572 pci_set_drvdata(pdev, adapter);
1573
1574 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1575
1576 switch (adapter->ahw.port_type) {
1577 case NETXEN_NIC_GBE:
1578 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1579 adapter->netdev->name);
1580 break;
1581 case NETXEN_NIC_XGBE:
1582 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1583 adapter->netdev->name);
1584 break;
1585 }
1586
1587 netxen_create_diag_entries(adapter);
1588
1589 return 0;
1590
1591err_out_disable_msi:
1592 netxen_teardown_intr(adapter);
1593
1594 netxen_free_dummy_dma(adapter);
1595
1596err_out_decr_ref:
1597 nx_decr_dev_ref_cnt(adapter);
1598
1599err_out_iounmap:
1600 netxen_cleanup_pci_map(adapter);
1601
1602err_out_free_netdev:
1603 free_netdev(netdev);
1604
1605err_out_free_res:
1606 if (NX_IS_REVISION_P3(pdev->revision))
1607 pci_disable_pcie_error_reporting(pdev);
1608 pci_release_regions(pdev);
1609
1610err_out_disable_pdev:
1611 pci_disable_device(pdev);
1612 return err;
1613}
1614
1615static
1616void netxen_cleanup_minidump(struct netxen_adapter *adapter)
1617{
1618 kfree(adapter->mdump.md_template);
1619 adapter->mdump.md_template = NULL;
1620
1621 if (adapter->mdump.md_capture_buff) {
1622 vfree(adapter->mdump.md_capture_buff);
1623 adapter->mdump.md_capture_buff = NULL;
1624 }
1625}
1626
1627static void netxen_nic_remove(struct pci_dev *pdev)
1628{
1629 struct netxen_adapter *adapter;
1630 struct net_device *netdev;
1631
1632 adapter = pci_get_drvdata(pdev);
1633 if (adapter == NULL)
1634 return;
1635
1636 netdev = adapter->netdev;
1637
1638 netxen_cancel_fw_work(adapter);
1639
1640 unregister_netdev(netdev);
1641
1642 cancel_work_sync(&adapter->tx_timeout_task);
1643
1644 netxen_free_ip_list(adapter, false);
1645 netxen_nic_detach(adapter);
1646
1647 nx_decr_dev_ref_cnt(adapter);
1648
1649 if (adapter->portnum == 0)
1650 netxen_free_dummy_dma(adapter);
1651
1652 clear_bit(__NX_RESETTING, &adapter->state);
1653
1654 netxen_teardown_intr(adapter);
1655 netxen_set_interrupt_mode(adapter, 0);
1656 netxen_remove_diag_entries(adapter);
1657
1658 netxen_cleanup_pci_map(adapter);
1659
1660 netxen_release_firmware(adapter);
1661
1662 if (NX_IS_REVISION_P3(pdev->revision)) {
1663 netxen_cleanup_minidump(adapter);
1664 pci_disable_pcie_error_reporting(pdev);
1665 }
1666
1667 pci_release_regions(pdev);
1668 pci_disable_device(pdev);
1669
1670 free_netdev(netdev);
1671}
1672
1673static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1674{
1675 struct net_device *netdev = adapter->netdev;
1676
1677 netif_device_detach(netdev);
1678
1679 netxen_cancel_fw_work(adapter);
1680
1681 if (netif_running(netdev))
1682 netxen_nic_down(adapter, netdev);
1683
1684 cancel_work_sync(&adapter->tx_timeout_task);
1685
1686 netxen_nic_detach(adapter);
1687
1688 if (adapter->portnum == 0)
1689 netxen_free_dummy_dma(adapter);
1690
1691 nx_decr_dev_ref_cnt(adapter);
1692
1693 clear_bit(__NX_RESETTING, &adapter->state);
1694}
1695
1696static int netxen_nic_attach_late_func(struct pci_dev *pdev)
1697{
1698 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1699 struct net_device *netdev = adapter->netdev;
1700 int err;
1701
1702 pci_set_master(pdev);
1703
1704 adapter->ahw.crb_win = -1;
1705 adapter->ahw.ocm_win = -1;
1706
1707 err = netxen_start_firmware(adapter);
1708 if (err) {
1709 dev_err(&pdev->dev, "failed to start firmware\n");
1710 return err;
1711 }
1712
1713 if (netif_running(netdev)) {
1714 err = netxen_nic_attach(adapter);
1715 if (err)
1716 goto err_out;
1717
1718 err = netxen_nic_up(adapter, netdev);
1719 if (err)
1720 goto err_out_detach;
1721
1722 netxen_restore_indev_addr(netdev, NETDEV_UP);
1723 }
1724
1725 netif_device_attach(netdev);
1726 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1727 return 0;
1728
1729err_out_detach:
1730 netxen_nic_detach(adapter);
1731err_out:
1732 nx_decr_dev_ref_cnt(adapter);
1733 return err;
1734}
1735
1736static int netxen_nic_attach_func(struct pci_dev *pdev)
1737{
1738 int err;
1739
1740 err = pci_enable_device(pdev);
1741 if (err)
1742 return err;
1743
1744 pci_set_power_state(pdev, PCI_D0);
1745 pci_restore_state(pdev);
1746
1747 return netxen_nic_attach_late_func(pdev);
1748}
1749
1750static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1751 pci_channel_state_t state)
1752{
1753 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1754
1755 if (state == pci_channel_io_perm_failure)
1756 return PCI_ERS_RESULT_DISCONNECT;
1757
1758 if (nx_dev_request_aer(adapter))
1759 return PCI_ERS_RESULT_RECOVERED;
1760
1761 netxen_nic_detach_func(adapter);
1762
1763 pci_disable_device(pdev);
1764
1765 return PCI_ERS_RESULT_NEED_RESET;
1766}
1767
1768static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1769{
1770 int err = 0;
1771
1772 err = netxen_nic_attach_func(pdev);
1773
1774 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1775}
1776
1777static void netxen_nic_shutdown(struct pci_dev *pdev)
1778{
1779 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1780
1781 netxen_nic_detach_func(adapter);
1782
1783 if (pci_save_state(pdev))
1784 return;
1785
1786 if (netxen_nic_wol_supported(adapter)) {
1787 pci_enable_wake(pdev, PCI_D3cold, 1);
1788 pci_enable_wake(pdev, PCI_D3hot, 1);
1789 }
1790
1791 pci_disable_device(pdev);
1792}
1793
1794static int __maybe_unused
1795netxen_nic_suspend(struct device *dev_d)
1796{
1797 struct netxen_adapter *adapter = dev_get_drvdata(dev_d);
1798
1799 netxen_nic_detach_func(adapter);
1800
1801 if (netxen_nic_wol_supported(adapter))
1802 device_wakeup_enable(dev_d);
1803
1804 return 0;
1805}
1806
1807static int __maybe_unused
1808netxen_nic_resume(struct device *dev_d)
1809{
1810 return netxen_nic_attach_late_func(to_pci_dev(dev_d));
1811}
1812
1813static int netxen_nic_open(struct net_device *netdev)
1814{
1815 struct netxen_adapter *adapter = netdev_priv(netdev);
1816 int err = 0;
1817
1818 if (adapter->driver_mismatch)
1819 return -EIO;
1820
1821 err = netxen_nic_attach(adapter);
1822 if (err)
1823 return err;
1824
1825 err = __netxen_nic_up(adapter, netdev);
1826 if (err)
1827 goto err_out;
1828
1829 netif_start_queue(netdev);
1830
1831 return 0;
1832
1833err_out:
1834 netxen_nic_detach(adapter);
1835 return err;
1836}
1837
1838/*
1839 * netxen_nic_close - Disables a network interface entry point
1840 */
1841static int netxen_nic_close(struct net_device *netdev)
1842{
1843 struct netxen_adapter *adapter = netdev_priv(netdev);
1844
1845 __netxen_nic_down(adapter, netdev);
1846 return 0;
1847}
1848
1849static void
1850netxen_tso_check(struct net_device *netdev,
1851 struct nx_host_tx_ring *tx_ring,
1852 struct cmd_desc_type0 *first_desc,
1853 struct sk_buff *skb)
1854{
1855 u8 opcode = TX_ETHER_PKT;
1856 __be16 protocol = skb->protocol;
1857 u16 flags = 0, vid = 0;
1858 u32 producer;
1859 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1860 struct cmd_desc_type0 *hwdesc;
1861 struct vlan_ethhdr *vh;
1862
1863 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1864
1865 vh = (struct vlan_ethhdr *)skb->data;
1866 protocol = vh->h_vlan_encapsulated_proto;
1867 flags = FLAGS_VLAN_TAGGED;
1868
1869 } else if (skb_vlan_tag_present(skb)) {
1870 flags = FLAGS_VLAN_OOB;
1871 vid = skb_vlan_tag_get(skb);
1872 netxen_set_tx_vlan_tci(first_desc, vid);
1873 vlan_oob = 1;
1874 }
1875
1876 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1877 skb_shinfo(skb)->gso_size > 0) {
1878
1879 hdr_len = skb_tcp_all_headers(skb);
1880
1881 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1882 first_desc->total_hdr_length = hdr_len;
1883 if (vlan_oob) {
1884 first_desc->total_hdr_length += VLAN_HLEN;
1885 first_desc->tcp_hdr_offset = VLAN_HLEN;
1886 first_desc->ip_hdr_offset = VLAN_HLEN;
1887 /* Only in case of TSO on vlan device */
1888 flags |= FLAGS_VLAN_TAGGED;
1889 }
1890
1891 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1892 TX_TCP_LSO6 : TX_TCP_LSO;
1893 tso = 1;
1894
1895 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1896 u8 l4proto;
1897
1898 if (protocol == cpu_to_be16(ETH_P_IP)) {
1899 l4proto = ip_hdr(skb)->protocol;
1900
1901 if (l4proto == IPPROTO_TCP)
1902 opcode = TX_TCP_PKT;
1903 else if(l4proto == IPPROTO_UDP)
1904 opcode = TX_UDP_PKT;
1905 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1906 l4proto = ipv6_hdr(skb)->nexthdr;
1907
1908 if (l4proto == IPPROTO_TCP)
1909 opcode = TX_TCPV6_PKT;
1910 else if(l4proto == IPPROTO_UDP)
1911 opcode = TX_UDPV6_PKT;
1912 }
1913 }
1914
1915 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1916 first_desc->ip_hdr_offset += skb_network_offset(skb);
1917 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1918
1919 if (!tso)
1920 return;
1921
1922 /* For LSO, we need to copy the MAC/IP/TCP headers into
1923 * the descriptor ring
1924 */
1925 producer = tx_ring->producer;
1926 copied = 0;
1927 offset = 2;
1928
1929 if (vlan_oob) {
1930 /* Create a TSO vlan header template for firmware */
1931
1932 hwdesc = &tx_ring->desc_head[producer];
1933 tx_ring->cmd_buf_arr[producer].skb = NULL;
1934
1935 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1936 hdr_len + VLAN_HLEN);
1937
1938 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1939 skb_copy_from_linear_data(skb, vh, 12);
1940 vh->h_vlan_proto = htons(ETH_P_8021Q);
1941 vh->h_vlan_TCI = htons(vid);
1942 skb_copy_from_linear_data_offset(skb, 12,
1943 (char *)vh + 16, copy_len - 16);
1944
1945 copied = copy_len - VLAN_HLEN;
1946 offset = 0;
1947
1948 producer = get_next_index(producer, tx_ring->num_desc);
1949 }
1950
1951 while (copied < hdr_len) {
1952
1953 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1954 (hdr_len - copied));
1955
1956 hwdesc = &tx_ring->desc_head[producer];
1957 tx_ring->cmd_buf_arr[producer].skb = NULL;
1958
1959 skb_copy_from_linear_data_offset(skb, copied,
1960 (char *)hwdesc + offset, copy_len);
1961
1962 copied += copy_len;
1963 offset = 0;
1964
1965 producer = get_next_index(producer, tx_ring->num_desc);
1966 }
1967
1968 tx_ring->producer = producer;
1969 barrier();
1970}
1971
1972static int
1973netxen_map_tx_skb(struct pci_dev *pdev,
1974 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1975{
1976 struct netxen_skb_frag *nf;
1977 skb_frag_t *frag;
1978 int i, nr_frags;
1979 dma_addr_t map;
1980
1981 nr_frags = skb_shinfo(skb)->nr_frags;
1982 nf = &pbuf->frag_array[0];
1983
1984 map = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb),
1985 DMA_TO_DEVICE);
1986 if (dma_mapping_error(&pdev->dev, map))
1987 goto out_err;
1988
1989 nf->dma = map;
1990 nf->length = skb_headlen(skb);
1991
1992 for (i = 0; i < nr_frags; i++) {
1993 frag = &skb_shinfo(skb)->frags[i];
1994 nf = &pbuf->frag_array[i+1];
1995
1996 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
1997 DMA_TO_DEVICE);
1998 if (dma_mapping_error(&pdev->dev, map))
1999 goto unwind;
2000
2001 nf->dma = map;
2002 nf->length = skb_frag_size(frag);
2003 }
2004
2005 return 0;
2006
2007unwind:
2008 while (--i >= 0) {
2009 nf = &pbuf->frag_array[i+1];
2010 dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE);
2011 nf->dma = 0ULL;
2012 }
2013
2014 nf = &pbuf->frag_array[0];
2015 dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE);
2016 nf->dma = 0ULL;
2017
2018out_err:
2019 return -ENOMEM;
2020}
2021
2022static inline void
2023netxen_clear_cmddesc(u64 *desc)
2024{
2025 desc[0] = 0ULL;
2026 desc[2] = 0ULL;
2027}
2028
2029static netdev_tx_t
2030netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2031{
2032 struct netxen_adapter *adapter = netdev_priv(netdev);
2033 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
2034 struct netxen_cmd_buffer *pbuf;
2035 struct netxen_skb_frag *buffrag;
2036 struct cmd_desc_type0 *hwdesc, *first_desc;
2037 struct pci_dev *pdev;
2038 int i, k;
2039 int delta = 0;
2040 skb_frag_t *frag;
2041
2042 u32 producer;
2043 int frag_count;
2044 u32 num_txd = tx_ring->num_desc;
2045
2046 frag_count = skb_shinfo(skb)->nr_frags + 1;
2047
2048 /* 14 frags supported for normal packet and
2049 * 32 frags supported for TSO packet
2050 */
2051 if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
2052
2053 for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
2054 frag = &skb_shinfo(skb)->frags[i];
2055 delta += skb_frag_size(frag);
2056 }
2057
2058 if (!__pskb_pull_tail(skb, delta))
2059 goto drop_packet;
2060
2061 frag_count = 1 + skb_shinfo(skb)->nr_frags;
2062 }
2063
2064 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
2065 netif_stop_queue(netdev);
2066 smp_mb();
2067 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
2068 netif_start_queue(netdev);
2069 else
2070 return NETDEV_TX_BUSY;
2071 }
2072
2073 producer = tx_ring->producer;
2074 pbuf = &tx_ring->cmd_buf_arr[producer];
2075
2076 pdev = adapter->pdev;
2077
2078 if (netxen_map_tx_skb(pdev, skb, pbuf))
2079 goto drop_packet;
2080
2081 pbuf->skb = skb;
2082 pbuf->frag_count = frag_count;
2083
2084 first_desc = hwdesc = &tx_ring->desc_head[producer];
2085 netxen_clear_cmddesc((u64 *)hwdesc);
2086
2087 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
2088 netxen_set_tx_port(first_desc, adapter->portnum);
2089
2090 for (i = 0; i < frag_count; i++) {
2091
2092 k = i % 4;
2093
2094 if ((k == 0) && (i > 0)) {
2095 /* move to next desc.*/
2096 producer = get_next_index(producer, num_txd);
2097 hwdesc = &tx_ring->desc_head[producer];
2098 netxen_clear_cmddesc((u64 *)hwdesc);
2099 tx_ring->cmd_buf_arr[producer].skb = NULL;
2100 }
2101
2102 buffrag = &pbuf->frag_array[i];
2103
2104 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
2105 switch (k) {
2106 case 0:
2107 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
2108 break;
2109 case 1:
2110 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
2111 break;
2112 case 2:
2113 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
2114 break;
2115 case 3:
2116 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
2117 break;
2118 }
2119 }
2120
2121 tx_ring->producer = get_next_index(producer, num_txd);
2122
2123 netxen_tso_check(netdev, tx_ring, first_desc, skb);
2124
2125 adapter->stats.txbytes += skb->len;
2126 adapter->stats.xmitcalled++;
2127
2128 netxen_nic_update_cmd_producer(adapter, tx_ring);
2129
2130 return NETDEV_TX_OK;
2131
2132drop_packet:
2133 adapter->stats.txdropped++;
2134 dev_kfree_skb_any(skb);
2135 return NETDEV_TX_OK;
2136}
2137
2138static int netxen_nic_check_temp(struct netxen_adapter *adapter)
2139{
2140 struct net_device *netdev = adapter->netdev;
2141 uint32_t temp, temp_state, temp_val;
2142 int rv = 0;
2143
2144 temp = NXRD32(adapter, CRB_TEMP_STATE);
2145
2146 temp_state = nx_get_temp_state(temp);
2147 temp_val = nx_get_temp_val(temp);
2148
2149 if (temp_state == NX_TEMP_PANIC) {
2150 printk(KERN_ALERT
2151 "%s: Device temperature %d degrees C exceeds"
2152 " maximum allowed. Hardware has been shut down.\n",
2153 netdev->name, temp_val);
2154 rv = 1;
2155 } else if (temp_state == NX_TEMP_WARN) {
2156 if (adapter->temp == NX_TEMP_NORMAL) {
2157 printk(KERN_ALERT
2158 "%s: Device temperature %d degrees C "
2159 "exceeds operating range."
2160 " Immediate action needed.\n",
2161 netdev->name, temp_val);
2162 }
2163 } else {
2164 if (adapter->temp == NX_TEMP_WARN) {
2165 printk(KERN_INFO
2166 "%s: Device temperature is now %d degrees C"
2167 " in normal range.\n", netdev->name,
2168 temp_val);
2169 }
2170 }
2171 adapter->temp = temp_state;
2172 return rv;
2173}
2174
2175void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2176{
2177 struct net_device *netdev = adapter->netdev;
2178
2179 if (adapter->ahw.linkup && !linkup) {
2180 printk(KERN_INFO "%s: %s NIC Link is down\n",
2181 netxen_nic_driver_name, netdev->name);
2182 adapter->ahw.linkup = 0;
2183 if (netif_running(netdev)) {
2184 netif_carrier_off(netdev);
2185 netif_stop_queue(netdev);
2186 }
2187 adapter->link_changed = !adapter->has_link_events;
2188 } else if (!adapter->ahw.linkup && linkup) {
2189 printk(KERN_INFO "%s: %s NIC Link is up\n",
2190 netxen_nic_driver_name, netdev->name);
2191 adapter->ahw.linkup = 1;
2192 if (netif_running(netdev)) {
2193 netif_carrier_on(netdev);
2194 netif_wake_queue(netdev);
2195 }
2196 adapter->link_changed = !adapter->has_link_events;
2197 }
2198}
2199
2200static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2201{
2202 u32 val, port, linkup;
2203
2204 port = adapter->physical_port;
2205
2206 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2207 val = NXRD32(adapter, CRB_XG_STATE_P3);
2208 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2209 linkup = (val == XG_LINK_UP_P3);
2210 } else {
2211 val = NXRD32(adapter, CRB_XG_STATE);
2212 val = (val >> port*8) & 0xff;
2213 linkup = (val == XG_LINK_UP);
2214 }
2215
2216 netxen_advert_link_change(adapter, linkup);
2217}
2218
2219static void netxen_tx_timeout(struct net_device *netdev, unsigned int txqueue)
2220{
2221 struct netxen_adapter *adapter = netdev_priv(netdev);
2222
2223 if (test_bit(__NX_RESETTING, &adapter->state))
2224 return;
2225
2226 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2227 schedule_work(&adapter->tx_timeout_task);
2228}
2229
2230static void netxen_tx_timeout_task(struct work_struct *work)
2231{
2232 struct netxen_adapter *adapter =
2233 container_of(work, struct netxen_adapter, tx_timeout_task);
2234
2235 if (!netif_running(adapter->netdev))
2236 return;
2237
2238 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2239 return;
2240
2241 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2242 goto request_reset;
2243
2244 rtnl_lock();
2245 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2246 /* try to scrub interrupt */
2247 netxen_napi_disable(adapter);
2248
2249 netxen_napi_enable(adapter);
2250
2251 netif_wake_queue(adapter->netdev);
2252
2253 clear_bit(__NX_RESETTING, &adapter->state);
2254 } else {
2255 clear_bit(__NX_RESETTING, &adapter->state);
2256 if (netxen_nic_reset_context(adapter)) {
2257 rtnl_unlock();
2258 goto request_reset;
2259 }
2260 }
2261 netif_trans_update(adapter->netdev);
2262 rtnl_unlock();
2263 return;
2264
2265request_reset:
2266 adapter->need_fw_reset = 1;
2267 clear_bit(__NX_RESETTING, &adapter->state);
2268}
2269
2270static void netxen_nic_get_stats(struct net_device *netdev,
2271 struct rtnl_link_stats64 *stats)
2272{
2273 struct netxen_adapter *adapter = netdev_priv(netdev);
2274
2275 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2276 stats->tx_packets = adapter->stats.xmitfinished;
2277 stats->rx_bytes = adapter->stats.rxbytes;
2278 stats->tx_bytes = adapter->stats.txbytes;
2279 stats->rx_dropped = adapter->stats.rxdropped;
2280 stats->tx_dropped = adapter->stats.txdropped;
2281}
2282
2283static irqreturn_t netxen_intr(int irq, void *data)
2284{
2285 struct nx_host_sds_ring *sds_ring = data;
2286 struct netxen_adapter *adapter = sds_ring->adapter;
2287 u32 status = 0;
2288
2289 status = readl(adapter->isr_int_vec);
2290
2291 if (!(status & adapter->int_vec_bit))
2292 return IRQ_NONE;
2293
2294 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2295 /* check interrupt state machine, to be sure */
2296 status = readl(adapter->crb_int_state_reg);
2297 if (!ISR_LEGACY_INT_TRIGGERED(status))
2298 return IRQ_NONE;
2299
2300 } else {
2301 unsigned long our_int = 0;
2302
2303 our_int = readl(adapter->crb_int_state_reg);
2304
2305 /* not our interrupt */
2306 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2307 return IRQ_NONE;
2308
2309 /* claim interrupt */
2310 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2311
2312 /* clear interrupt */
2313 netxen_nic_disable_int(sds_ring);
2314 }
2315
2316 writel(0xffffffff, adapter->tgt_status_reg);
2317 /* read twice to ensure write is flushed */
2318 readl(adapter->isr_int_vec);
2319 readl(adapter->isr_int_vec);
2320
2321 napi_schedule(&sds_ring->napi);
2322
2323 return IRQ_HANDLED;
2324}
2325
2326static irqreturn_t netxen_msi_intr(int irq, void *data)
2327{
2328 struct nx_host_sds_ring *sds_ring = data;
2329 struct netxen_adapter *adapter = sds_ring->adapter;
2330
2331 /* clear interrupt */
2332 writel(0xffffffff, adapter->tgt_status_reg);
2333
2334 napi_schedule(&sds_ring->napi);
2335 return IRQ_HANDLED;
2336}
2337
2338static irqreturn_t netxen_msix_intr(int irq, void *data)
2339{
2340 struct nx_host_sds_ring *sds_ring = data;
2341
2342 napi_schedule(&sds_ring->napi);
2343 return IRQ_HANDLED;
2344}
2345
2346static int netxen_nic_poll(struct napi_struct *napi, int budget)
2347{
2348 struct nx_host_sds_ring *sds_ring =
2349 container_of(napi, struct nx_host_sds_ring, napi);
2350
2351 struct netxen_adapter *adapter = sds_ring->adapter;
2352
2353 int tx_complete;
2354 int work_done;
2355
2356 tx_complete = netxen_process_cmd_ring(adapter);
2357
2358 work_done = netxen_process_rcv_ring(sds_ring, budget);
2359
2360 if (!tx_complete)
2361 work_done = budget;
2362
2363 if (work_done < budget) {
2364 napi_complete_done(&sds_ring->napi, work_done);
2365 if (test_bit(__NX_DEV_UP, &adapter->state))
2366 netxen_nic_enable_int(sds_ring);
2367 }
2368
2369 return work_done;
2370}
2371
2372static int
2373nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2374{
2375 int count;
2376 if (netxen_api_lock(adapter))
2377 return -EIO;
2378
2379 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2380
2381 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2382
2383 netxen_api_unlock(adapter);
2384 return count;
2385}
2386
2387static int
2388nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2389{
2390 int count, state;
2391 if (netxen_api_lock(adapter))
2392 return -EIO;
2393
2394 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2395 WARN_ON(count == 0);
2396
2397 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2398 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2399
2400 if (count == 0 && state != NX_DEV_FAILED)
2401 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2402
2403 netxen_api_unlock(adapter);
2404 return count;
2405}
2406
2407static int
2408nx_dev_request_aer(struct netxen_adapter *adapter)
2409{
2410 u32 state;
2411 int ret = -EINVAL;
2412
2413 if (netxen_api_lock(adapter))
2414 return ret;
2415
2416 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2417
2418 if (state == NX_DEV_NEED_AER)
2419 ret = 0;
2420 else if (state == NX_DEV_READY) {
2421 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2422 ret = 0;
2423 }
2424
2425 netxen_api_unlock(adapter);
2426 return ret;
2427}
2428
2429int
2430nx_dev_request_reset(struct netxen_adapter *adapter)
2431{
2432 u32 state;
2433 int ret = -EINVAL;
2434
2435 if (netxen_api_lock(adapter))
2436 return ret;
2437
2438 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2439
2440 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED)
2441 ret = 0;
2442 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2443 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2444 adapter->flags |= NETXEN_FW_RESET_OWNER;
2445 ret = 0;
2446 }
2447
2448 netxen_api_unlock(adapter);
2449
2450 return ret;
2451}
2452
2453static int
2454netxen_can_start_firmware(struct netxen_adapter *adapter)
2455{
2456 int count;
2457 int can_start = 0;
2458
2459 if (netxen_api_lock(adapter)) {
2460 nx_incr_dev_ref_cnt(adapter);
2461 return -1;
2462 }
2463
2464 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2465
2466 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2467 count = 0;
2468
2469 if (count == 0) {
2470 can_start = 1;
2471 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2472 }
2473
2474 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2475
2476 netxen_api_unlock(adapter);
2477
2478 return can_start;
2479}
2480
2481static void
2482netxen_schedule_work(struct netxen_adapter *adapter,
2483 work_func_t func, int delay)
2484{
2485 INIT_DELAYED_WORK(&adapter->fw_work, func);
2486 schedule_delayed_work(&adapter->fw_work, delay);
2487}
2488
2489static void
2490netxen_cancel_fw_work(struct netxen_adapter *adapter)
2491{
2492 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2493 msleep(10);
2494
2495 cancel_delayed_work_sync(&adapter->fw_work);
2496}
2497
2498static void
2499netxen_attach_work(struct work_struct *work)
2500{
2501 struct netxen_adapter *adapter = container_of(work,
2502 struct netxen_adapter, fw_work.work);
2503 struct net_device *netdev = adapter->netdev;
2504 int err = 0;
2505
2506 if (netif_running(netdev)) {
2507 err = netxen_nic_attach(adapter);
2508 if (err)
2509 goto done;
2510
2511 err = netxen_nic_up(adapter, netdev);
2512 if (err) {
2513 netxen_nic_detach(adapter);
2514 goto done;
2515 }
2516
2517 netxen_restore_indev_addr(netdev, NETDEV_UP);
2518 }
2519
2520 netif_device_attach(netdev);
2521
2522done:
2523 adapter->fw_fail_cnt = 0;
2524 clear_bit(__NX_RESETTING, &adapter->state);
2525 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2526}
2527
2528static void
2529netxen_fwinit_work(struct work_struct *work)
2530{
2531 struct netxen_adapter *adapter = container_of(work,
2532 struct netxen_adapter, fw_work.work);
2533 int dev_state;
2534 int count;
2535 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2536 if (adapter->flags & NETXEN_FW_RESET_OWNER) {
2537 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2538 WARN_ON(count == 0);
2539 if (count == 1) {
2540 if (adapter->mdump.md_enabled) {
2541 rtnl_lock();
2542 netxen_dump_fw(adapter);
2543 rtnl_unlock();
2544 }
2545 adapter->flags &= ~NETXEN_FW_RESET_OWNER;
2546 if (netxen_api_lock(adapter)) {
2547 clear_bit(__NX_RESETTING, &adapter->state);
2548 NXWR32(adapter, NX_CRB_DEV_STATE,
2549 NX_DEV_FAILED);
2550 return;
2551 }
2552 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2553 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2554 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2555 dev_state = NX_DEV_COLD;
2556 netxen_api_unlock(adapter);
2557 }
2558 }
2559
2560 switch (dev_state) {
2561 case NX_DEV_COLD:
2562 case NX_DEV_READY:
2563 if (!netxen_start_firmware(adapter)) {
2564 netxen_schedule_work(adapter, netxen_attach_work, 0);
2565 return;
2566 }
2567 break;
2568
2569 case NX_DEV_NEED_RESET:
2570 case NX_DEV_INITALIZING:
2571 netxen_schedule_work(adapter,
2572 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2573 return;
2574
2575 case NX_DEV_FAILED:
2576 default:
2577 nx_incr_dev_ref_cnt(adapter);
2578 break;
2579 }
2580
2581 if (netxen_api_lock(adapter)) {
2582 clear_bit(__NX_RESETTING, &adapter->state);
2583 return;
2584 }
2585 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_FAILED);
2586 netxen_api_unlock(adapter);
2587 dev_err(&adapter->pdev->dev, "%s: Device initialization Failed\n",
2588 adapter->netdev->name);
2589
2590 clear_bit(__NX_RESETTING, &adapter->state);
2591}
2592
2593static void
2594netxen_detach_work(struct work_struct *work)
2595{
2596 struct netxen_adapter *adapter = container_of(work,
2597 struct netxen_adapter, fw_work.work);
2598 struct net_device *netdev = adapter->netdev;
2599 int ref_cnt = 0, delay;
2600 u32 status;
2601
2602 netif_device_detach(netdev);
2603
2604 netxen_nic_down(adapter, netdev);
2605
2606 rtnl_lock();
2607 netxen_nic_detach(adapter);
2608 rtnl_unlock();
2609
2610 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2611
2612 if (status & NX_RCODE_FATAL_ERROR)
2613 goto err_ret;
2614
2615 if (adapter->temp == NX_TEMP_PANIC)
2616 goto err_ret;
2617
2618 if (!(adapter->flags & NETXEN_FW_RESET_OWNER))
2619 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2620
2621 if (ref_cnt == -EIO)
2622 goto err_ret;
2623
2624 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2625
2626 adapter->fw_wait_cnt = 0;
2627 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2628
2629 return;
2630
2631err_ret:
2632 clear_bit(__NX_RESETTING, &adapter->state);
2633}
2634
2635static int
2636netxen_check_health(struct netxen_adapter *adapter)
2637{
2638 u32 state, heartbit;
2639 u32 peg_status;
2640 struct net_device *netdev = adapter->netdev;
2641
2642 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2643 if (state == NX_DEV_NEED_AER)
2644 return 0;
2645
2646 if (netxen_nic_check_temp(adapter))
2647 goto detach;
2648
2649 if (adapter->need_fw_reset) {
2650 if (nx_dev_request_reset(adapter))
2651 return 0;
2652 goto detach;
2653 }
2654
2655 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2656 * 1. Tx timeout 2. Fw hang
2657 * Send request to destroy context in case of tx timeout only
2658 * and doesn't required in case of Fw hang
2659 */
2660 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED) {
2661 adapter->need_fw_reset = 1;
2662 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2663 goto detach;
2664 }
2665
2666 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2667 return 0;
2668
2669 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2670 if (heartbit != adapter->heartbit) {
2671 adapter->heartbit = heartbit;
2672 adapter->fw_fail_cnt = 0;
2673 if (adapter->need_fw_reset)
2674 goto detach;
2675 return 0;
2676 }
2677
2678 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2679 return 0;
2680
2681 if (nx_dev_request_reset(adapter))
2682 return 0;
2683
2684 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2685
2686 dev_err(&netdev->dev, "firmware hang detected\n");
2687 peg_status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2688 dev_err(&adapter->pdev->dev, "Dumping hw/fw registers\n"
2689 "PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2: 0x%x,\n"
2690 "PEG_NET_0_PC: 0x%x, PEG_NET_1_PC: 0x%x,\n"
2691 "PEG_NET_2_PC: 0x%x, PEG_NET_3_PC: 0x%x,\n"
2692 "PEG_NET_4_PC: 0x%x\n",
2693 peg_status,
2694 NXRD32(adapter, NETXEN_PEG_HALT_STATUS2),
2695 NXRD32(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c),
2696 NXRD32(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c),
2697 NXRD32(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c),
2698 NXRD32(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c),
2699 NXRD32(adapter, NETXEN_CRB_PEG_NET_4 + 0x3c));
2700 if (NX_FWERROR_PEGSTAT1(peg_status) == 0x67)
2701 dev_err(&adapter->pdev->dev,
2702 "Firmware aborted with error code 0x00006700. "
2703 "Device is being reset.\n");
2704detach:
2705 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2706 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2707 netxen_schedule_work(adapter, netxen_detach_work, 0);
2708 return 1;
2709}
2710
2711static void
2712netxen_fw_poll_work(struct work_struct *work)
2713{
2714 struct netxen_adapter *adapter = container_of(work,
2715 struct netxen_adapter, fw_work.work);
2716
2717 if (test_bit(__NX_RESETTING, &adapter->state))
2718 goto reschedule;
2719
2720 if (test_bit(__NX_DEV_UP, &adapter->state) &&
2721 !(adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)) {
2722 if (!adapter->has_link_events) {
2723
2724 netxen_nic_handle_phy_intr(adapter);
2725
2726 if (adapter->link_changed)
2727 netxen_nic_set_link_parameters(adapter);
2728 }
2729 }
2730
2731 if (netxen_check_health(adapter))
2732 return;
2733
2734reschedule:
2735 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2736}
2737
2738static ssize_t
2739netxen_store_bridged_mode(struct device *dev,
2740 struct device_attribute *attr, const char *buf, size_t len)
2741{
2742 struct net_device *net = to_net_dev(dev);
2743 struct netxen_adapter *adapter = netdev_priv(net);
2744 unsigned long new;
2745 int ret = -EINVAL;
2746
2747 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2748 goto err_out;
2749
2750 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2751 goto err_out;
2752
2753 if (kstrtoul(buf, 2, &new))
2754 goto err_out;
2755
2756 if (!netxen_config_bridged_mode(adapter, !!new))
2757 ret = len;
2758
2759err_out:
2760 return ret;
2761}
2762
2763static ssize_t
2764netxen_show_bridged_mode(struct device *dev,
2765 struct device_attribute *attr, char *buf)
2766{
2767 struct net_device *net = to_net_dev(dev);
2768 struct netxen_adapter *adapter;
2769 int bridged_mode = 0;
2770
2771 adapter = netdev_priv(net);
2772
2773 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2774 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2775
2776 return sprintf(buf, "%d\n", bridged_mode);
2777}
2778
2779static const struct device_attribute dev_attr_bridged_mode = {
2780 .attr = { .name = "bridged_mode", .mode = 0644 },
2781 .show = netxen_show_bridged_mode,
2782 .store = netxen_store_bridged_mode,
2783};
2784
2785static ssize_t
2786netxen_store_diag_mode(struct device *dev,
2787 struct device_attribute *attr, const char *buf, size_t len)
2788{
2789 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2790 unsigned long new;
2791
2792 if (kstrtoul(buf, 2, &new))
2793 return -EINVAL;
2794
2795 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2796 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2797
2798 return len;
2799}
2800
2801static ssize_t
2802netxen_show_diag_mode(struct device *dev,
2803 struct device_attribute *attr, char *buf)
2804{
2805 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2806
2807 return sprintf(buf, "%d\n",
2808 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2809}
2810
2811static const struct device_attribute dev_attr_diag_mode = {
2812 .attr = { .name = "diag_mode", .mode = 0644 },
2813 .show = netxen_show_diag_mode,
2814 .store = netxen_store_diag_mode,
2815};
2816
2817static int
2818netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2819 loff_t offset, size_t size)
2820{
2821 size_t crb_size = 4;
2822
2823 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2824 return -EIO;
2825
2826 if (offset < NETXEN_PCI_CRBSPACE) {
2827 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2828 return -EINVAL;
2829
2830 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2831 NETXEN_PCI_CAMQM_2M_END))
2832 crb_size = 8;
2833 else
2834 return -EINVAL;
2835 }
2836
2837 if ((size != crb_size) || (offset & (crb_size-1)))
2838 return -EINVAL;
2839
2840 return 0;
2841}
2842
2843static ssize_t
2844netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2845 struct bin_attribute *attr,
2846 char *buf, loff_t offset, size_t size)
2847{
2848 struct device *dev = kobj_to_dev(kobj);
2849 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2850 u32 data;
2851 u64 qmdata;
2852 int ret;
2853
2854 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2855 if (ret != 0)
2856 return ret;
2857
2858 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2859 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2860 NETXEN_PCI_CAMQM_2M_END)) {
2861 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2862 memcpy(buf, &qmdata, size);
2863 } else {
2864 data = NXRD32(adapter, offset);
2865 memcpy(buf, &data, size);
2866 }
2867
2868 return size;
2869}
2870
2871static ssize_t
2872netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2873 struct bin_attribute *attr,
2874 char *buf, loff_t offset, size_t size)
2875{
2876 struct device *dev = kobj_to_dev(kobj);
2877 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2878 u32 data;
2879 u64 qmdata;
2880 int ret;
2881
2882 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2883 if (ret != 0)
2884 return ret;
2885
2886 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2887 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2888 NETXEN_PCI_CAMQM_2M_END)) {
2889 memcpy(&qmdata, buf, size);
2890 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2891 } else {
2892 memcpy(&data, buf, size);
2893 NXWR32(adapter, offset, data);
2894 }
2895
2896 return size;
2897}
2898
2899static int
2900netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2901 loff_t offset, size_t size)
2902{
2903 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2904 return -EIO;
2905
2906 if ((size != 8) || (offset & 0x7))
2907 return -EIO;
2908
2909 return 0;
2910}
2911
2912static ssize_t
2913netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2914 struct bin_attribute *attr,
2915 char *buf, loff_t offset, size_t size)
2916{
2917 struct device *dev = kobj_to_dev(kobj);
2918 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2919 u64 data;
2920 int ret;
2921
2922 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2923 if (ret != 0)
2924 return ret;
2925
2926 if (adapter->pci_mem_read(adapter, offset, &data))
2927 return -EIO;
2928
2929 memcpy(buf, &data, size);
2930
2931 return size;
2932}
2933
2934static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2935 struct bin_attribute *attr, char *buf,
2936 loff_t offset, size_t size)
2937{
2938 struct device *dev = kobj_to_dev(kobj);
2939 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2940 u64 data;
2941 int ret;
2942
2943 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2944 if (ret != 0)
2945 return ret;
2946
2947 memcpy(&data, buf, size);
2948
2949 if (adapter->pci_mem_write(adapter, offset, data))
2950 return -EIO;
2951
2952 return size;
2953}
2954
2955
2956static const struct bin_attribute bin_attr_crb = {
2957 .attr = { .name = "crb", .mode = 0644 },
2958 .size = 0,
2959 .read = netxen_sysfs_read_crb,
2960 .write = netxen_sysfs_write_crb,
2961};
2962
2963static const struct bin_attribute bin_attr_mem = {
2964 .attr = { .name = "mem", .mode = 0644 },
2965 .size = 0,
2966 .read = netxen_sysfs_read_mem,
2967 .write = netxen_sysfs_write_mem,
2968};
2969
2970static ssize_t
2971netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj,
2972 struct bin_attribute *attr,
2973 char *buf, loff_t offset, size_t size)
2974{
2975 struct device *dev = kobj_to_dev(kobj);
2976 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2977 struct net_device *netdev = adapter->netdev;
2978 struct netxen_dimm_cfg dimm;
2979 u8 dw, rows, cols, banks, ranks;
2980 u32 val;
2981
2982 if (size < attr->size) {
2983 netdev_err(netdev, "Invalid size\n");
2984 return -EINVAL;
2985 }
2986
2987 memset(&dimm, 0, sizeof(struct netxen_dimm_cfg));
2988 val = NXRD32(adapter, NETXEN_DIMM_CAPABILITY);
2989
2990 /* Checks if DIMM info is valid. */
2991 if (val & NETXEN_DIMM_VALID_FLAG) {
2992 netdev_err(netdev, "Invalid DIMM flag\n");
2993 dimm.presence = 0xff;
2994 goto out;
2995 }
2996
2997 rows = NETXEN_DIMM_NUMROWS(val);
2998 cols = NETXEN_DIMM_NUMCOLS(val);
2999 ranks = NETXEN_DIMM_NUMRANKS(val);
3000 banks = NETXEN_DIMM_NUMBANKS(val);
3001 dw = NETXEN_DIMM_DATAWIDTH(val);
3002
3003 dimm.presence = (val & NETXEN_DIMM_PRESENT);
3004
3005 /* Checks if DIMM info is present. */
3006 if (!dimm.presence) {
3007 netdev_err(netdev, "DIMM not present\n");
3008 goto out;
3009 }
3010
3011 dimm.dimm_type = NETXEN_DIMM_TYPE(val);
3012
3013 switch (dimm.dimm_type) {
3014 case NETXEN_DIMM_TYPE_RDIMM:
3015 case NETXEN_DIMM_TYPE_UDIMM:
3016 case NETXEN_DIMM_TYPE_SO_DIMM:
3017 case NETXEN_DIMM_TYPE_Micro_DIMM:
3018 case NETXEN_DIMM_TYPE_Mini_RDIMM:
3019 case NETXEN_DIMM_TYPE_Mini_UDIMM:
3020 break;
3021 default:
3022 netdev_err(netdev, "Invalid DIMM type %x\n", dimm.dimm_type);
3023 goto out;
3024 }
3025
3026 if (val & NETXEN_DIMM_MEMTYPE_DDR2_SDRAM)
3027 dimm.mem_type = NETXEN_DIMM_MEM_DDR2_SDRAM;
3028 else
3029 dimm.mem_type = NETXEN_DIMM_MEMTYPE(val);
3030
3031 if (val & NETXEN_DIMM_SIZE) {
3032 dimm.size = NETXEN_DIMM_STD_MEM_SIZE;
3033 goto out;
3034 }
3035
3036 if (!rows) {
3037 netdev_err(netdev, "Invalid no of rows %x\n", rows);
3038 goto out;
3039 }
3040
3041 if (!cols) {
3042 netdev_err(netdev, "Invalid no of columns %x\n", cols);
3043 goto out;
3044 }
3045
3046 if (!banks) {
3047 netdev_err(netdev, "Invalid no of banks %x\n", banks);
3048 goto out;
3049 }
3050
3051 ranks += 1;
3052
3053 switch (dw) {
3054 case 0x0:
3055 dw = 32;
3056 break;
3057 case 0x1:
3058 dw = 33;
3059 break;
3060 case 0x2:
3061 dw = 36;
3062 break;
3063 case 0x3:
3064 dw = 64;
3065 break;
3066 case 0x4:
3067 dw = 72;
3068 break;
3069 case 0x5:
3070 dw = 80;
3071 break;
3072 case 0x6:
3073 dw = 128;
3074 break;
3075 case 0x7:
3076 dw = 144;
3077 break;
3078 default:
3079 netdev_err(netdev, "Invalid data-width %x\n", dw);
3080 goto out;
3081 }
3082
3083 dimm.size = ((1 << rows) * (1 << cols) * dw * banks * ranks) / 8;
3084 /* Size returned in MB. */
3085 dimm.size = (dimm.size) / 0x100000;
3086out:
3087 memcpy(buf, &dimm, sizeof(struct netxen_dimm_cfg));
3088 return sizeof(struct netxen_dimm_cfg);
3089
3090}
3091
3092static const struct bin_attribute bin_attr_dimm = {
3093 .attr = { .name = "dimm", .mode = 0644 },
3094 .size = sizeof(struct netxen_dimm_cfg),
3095 .read = netxen_sysfs_read_dimm,
3096};
3097
3098
3099static void
3100netxen_create_sysfs_entries(struct netxen_adapter *adapter)
3101{
3102 struct device *dev = &adapter->pdev->dev;
3103
3104 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
3105 /* bridged_mode control */
3106 if (device_create_file(dev, &dev_attr_bridged_mode)) {
3107 dev_warn(dev,
3108 "failed to create bridged_mode sysfs entry\n");
3109 }
3110 }
3111}
3112
3113static void
3114netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
3115{
3116 struct device *dev = &adapter->pdev->dev;
3117
3118 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
3119 device_remove_file(dev, &dev_attr_bridged_mode);
3120}
3121
3122static void
3123netxen_create_diag_entries(struct netxen_adapter *adapter)
3124{
3125 struct pci_dev *pdev = adapter->pdev;
3126 struct device *dev;
3127
3128 dev = &pdev->dev;
3129 if (device_create_file(dev, &dev_attr_diag_mode))
3130 dev_info(dev, "failed to create diag_mode sysfs entry\n");
3131 if (device_create_bin_file(dev, &bin_attr_crb))
3132 dev_info(dev, "failed to create crb sysfs entry\n");
3133 if (device_create_bin_file(dev, &bin_attr_mem))
3134 dev_info(dev, "failed to create mem sysfs entry\n");
3135 if (device_create_bin_file(dev, &bin_attr_dimm))
3136 dev_info(dev, "failed to create dimm sysfs entry\n");
3137}
3138
3139
3140static void
3141netxen_remove_diag_entries(struct netxen_adapter *adapter)
3142{
3143 struct pci_dev *pdev = adapter->pdev;
3144 struct device *dev = &pdev->dev;
3145
3146 device_remove_file(dev, &dev_attr_diag_mode);
3147 device_remove_bin_file(dev, &bin_attr_crb);
3148 device_remove_bin_file(dev, &bin_attr_mem);
3149 device_remove_bin_file(dev, &bin_attr_dimm);
3150}
3151
3152#ifdef CONFIG_INET
3153
3154#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
3155
3156static int
3157netxen_destip_supported(struct netxen_adapter *adapter)
3158{
3159 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
3160 return 0;
3161
3162 if (adapter->ahw.cut_through)
3163 return 0;
3164
3165 return 1;
3166}
3167
3168static void
3169netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3170{
3171 struct nx_ip_list *cur, *tmp_cur;
3172
3173 list_for_each_entry_safe(cur, tmp_cur, &adapter->ip_list, list) {
3174 if (master) {
3175 if (cur->master) {
3176 netxen_config_ipaddr(adapter, cur->ip_addr,
3177 NX_IP_DOWN);
3178 list_del(&cur->list);
3179 kfree(cur);
3180 }
3181 } else {
3182 netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
3183 list_del(&cur->list);
3184 kfree(cur);
3185 }
3186 }
3187}
3188
3189static bool
3190netxen_list_config_ip(struct netxen_adapter *adapter,
3191 struct in_ifaddr *ifa, unsigned long event)
3192{
3193 struct net_device *dev;
3194 struct nx_ip_list *cur, *tmp_cur;
3195 struct list_head *head;
3196 bool ret = false;
3197
3198 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3199
3200 if (dev == NULL)
3201 goto out;
3202
3203 switch (event) {
3204 case NX_IP_UP:
3205 list_for_each(head, &adapter->ip_list) {
3206 cur = list_entry(head, struct nx_ip_list, list);
3207
3208 if (cur->ip_addr == ifa->ifa_address)
3209 goto out;
3210 }
3211
3212 cur = kzalloc(sizeof(struct nx_ip_list), GFP_ATOMIC);
3213 if (cur == NULL)
3214 goto out;
3215 if (is_vlan_dev(dev))
3216 dev = vlan_dev_real_dev(dev);
3217 cur->master = !!netif_is_bond_master(dev);
3218 cur->ip_addr = ifa->ifa_address;
3219 list_add_tail(&cur->list, &adapter->ip_list);
3220 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
3221 ret = true;
3222 break;
3223 case NX_IP_DOWN:
3224 list_for_each_entry_safe(cur, tmp_cur,
3225 &adapter->ip_list, list) {
3226 if (cur->ip_addr == ifa->ifa_address) {
3227 list_del(&cur->list);
3228 kfree(cur);
3229 netxen_config_ipaddr(adapter, ifa->ifa_address,
3230 NX_IP_DOWN);
3231 ret = true;
3232 break;
3233 }
3234 }
3235 }
3236out:
3237 return ret;
3238}
3239
3240static void
3241netxen_config_indev_addr(struct netxen_adapter *adapter,
3242 struct net_device *dev, unsigned long event)
3243{
3244 struct in_device *indev;
3245 struct in_ifaddr *ifa;
3246
3247 if (!netxen_destip_supported(adapter))
3248 return;
3249
3250 indev = in_dev_get(dev);
3251 if (!indev)
3252 return;
3253
3254 rcu_read_lock();
3255 in_dev_for_each_ifa_rcu(ifa, indev) {
3256 switch (event) {
3257 case NETDEV_UP:
3258 netxen_list_config_ip(adapter, ifa, NX_IP_UP);
3259 break;
3260 case NETDEV_DOWN:
3261 netxen_list_config_ip(adapter, ifa, NX_IP_DOWN);
3262 break;
3263 default:
3264 break;
3265 }
3266 }
3267 rcu_read_unlock();
3268 in_dev_put(indev);
3269}
3270
3271static void
3272netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
3273
3274{
3275 struct netxen_adapter *adapter = netdev_priv(netdev);
3276 struct nx_ip_list *pos, *tmp_pos;
3277 unsigned long ip_event;
3278
3279 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3280 netxen_config_indev_addr(adapter, netdev, event);
3281
3282 list_for_each_entry_safe(pos, tmp_pos, &adapter->ip_list, list) {
3283 netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
3284 }
3285}
3286
3287static inline bool
3288netxen_config_checkdev(struct net_device *dev)
3289{
3290 struct netxen_adapter *adapter;
3291
3292 if (!is_netxen_netdev(dev))
3293 return false;
3294 adapter = netdev_priv(dev);
3295 if (!adapter)
3296 return false;
3297 if (!netxen_destip_supported(adapter))
3298 return false;
3299 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3300 return false;
3301
3302 return true;
3303}
3304
3305/**
3306 * netxen_config_master - configure addresses based on master
3307 * @dev: netxen device
3308 * @event: netdev event
3309 */
3310static void netxen_config_master(struct net_device *dev, unsigned long event)
3311{
3312 struct net_device *master, *slave;
3313 struct netxen_adapter *adapter = netdev_priv(dev);
3314
3315 rcu_read_lock();
3316 master = netdev_master_upper_dev_get_rcu(dev);
3317 /*
3318 * This is the case where the netxen nic is being
3319 * enslaved and is dev_open()ed in bond_enslave()
3320 * Now we should program the bond's (and its vlans')
3321 * addresses in the netxen NIC.
3322 */
3323 if (master && netif_is_bond_master(master) &&
3324 !netif_is_bond_slave(dev)) {
3325 netxen_config_indev_addr(adapter, master, event);
3326 for_each_netdev_rcu(&init_net, slave)
3327 if (is_vlan_dev(slave) &&
3328 vlan_dev_real_dev(slave) == master)
3329 netxen_config_indev_addr(adapter, slave, event);
3330 }
3331 rcu_read_unlock();
3332 /*
3333 * This is the case where the netxen nic is being
3334 * released and is dev_close()ed in bond_release()
3335 * just before IFF_BONDING is stripped.
3336 */
3337 if (!master && dev->priv_flags & IFF_BONDING)
3338 netxen_free_ip_list(adapter, true);
3339}
3340
3341static int netxen_netdev_event(struct notifier_block *this,
3342 unsigned long event, void *ptr)
3343{
3344 struct netxen_adapter *adapter;
3345 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3346 struct net_device *orig_dev = dev;
3347 struct net_device *slave;
3348
3349recheck:
3350 if (dev == NULL)
3351 goto done;
3352
3353 if (is_vlan_dev(dev)) {
3354 dev = vlan_dev_real_dev(dev);
3355 goto recheck;
3356 }
3357 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3358 /* If this is a bonding device, look for netxen-based slaves*/
3359 if (netif_is_bond_master(dev)) {
3360 rcu_read_lock();
3361 for_each_netdev_in_bond_rcu(dev, slave) {
3362 if (!netxen_config_checkdev(slave))
3363 continue;
3364 adapter = netdev_priv(slave);
3365 netxen_config_indev_addr(adapter,
3366 orig_dev, event);
3367 }
3368 rcu_read_unlock();
3369 } else {
3370 if (!netxen_config_checkdev(dev))
3371 goto done;
3372 adapter = netdev_priv(dev);
3373 /* Act only if the actual netxen is the target */
3374 if (orig_dev == dev)
3375 netxen_config_master(dev, event);
3376 netxen_config_indev_addr(adapter, orig_dev, event);
3377 }
3378 }
3379done:
3380 return NOTIFY_DONE;
3381}
3382
3383static int
3384netxen_inetaddr_event(struct notifier_block *this,
3385 unsigned long event, void *ptr)
3386{
3387 struct netxen_adapter *adapter;
3388 struct net_device *dev, *slave;
3389 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3390 unsigned long ip_event;
3391
3392 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3393 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3394recheck:
3395 if (dev == NULL)
3396 goto done;
3397
3398 if (is_vlan_dev(dev)) {
3399 dev = vlan_dev_real_dev(dev);
3400 goto recheck;
3401 }
3402 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3403 /* If this is a bonding device, look for netxen-based slaves*/
3404 if (netif_is_bond_master(dev)) {
3405 rcu_read_lock();
3406 for_each_netdev_in_bond_rcu(dev, slave) {
3407 if (!netxen_config_checkdev(slave))
3408 continue;
3409 adapter = netdev_priv(slave);
3410 netxen_list_config_ip(adapter, ifa, ip_event);
3411 }
3412 rcu_read_unlock();
3413 } else {
3414 if (!netxen_config_checkdev(dev))
3415 goto done;
3416 adapter = netdev_priv(dev);
3417 netxen_list_config_ip(adapter, ifa, ip_event);
3418 }
3419 }
3420done:
3421 return NOTIFY_DONE;
3422}
3423
3424static struct notifier_block netxen_netdev_cb = {
3425 .notifier_call = netxen_netdev_event,
3426};
3427
3428static struct notifier_block netxen_inetaddr_cb = {
3429 .notifier_call = netxen_inetaddr_event,
3430};
3431#else
3432static void
3433netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
3434{ }
3435static void
3436netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3437{ }
3438#endif
3439
3440static const struct pci_error_handlers netxen_err_handler = {
3441 .error_detected = netxen_io_error_detected,
3442 .slot_reset = netxen_io_slot_reset,
3443};
3444
3445static SIMPLE_DEV_PM_OPS(netxen_nic_pm_ops,
3446 netxen_nic_suspend,
3447 netxen_nic_resume);
3448
3449static struct pci_driver netxen_driver = {
3450 .name = netxen_nic_driver_name,
3451 .id_table = netxen_pci_tbl,
3452 .probe = netxen_nic_probe,
3453 .remove = netxen_nic_remove,
3454 .driver.pm = &netxen_nic_pm_ops,
3455 .shutdown = netxen_nic_shutdown,
3456 .err_handler = &netxen_err_handler
3457};
3458
3459static int __init netxen_init_module(void)
3460{
3461 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
3462
3463#ifdef CONFIG_INET
3464 register_netdevice_notifier(&netxen_netdev_cb);
3465 register_inetaddr_notifier(&netxen_inetaddr_cb);
3466#endif
3467 return pci_register_driver(&netxen_driver);
3468}
3469
3470module_init(netxen_init_module);
3471
3472static void __exit netxen_exit_module(void)
3473{
3474 pci_unregister_driver(&netxen_driver);
3475
3476#ifdef CONFIG_INET
3477 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3478 unregister_netdevice_notifier(&netxen_netdev_cb);
3479#endif
3480}
3481
3482module_exit(netxen_exit_module);