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