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