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