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net: Fix spinlock use in alloc_netdev_mq()
[linux-2.6-block.git] / drivers / net / netxen / netxen_nic_main.c
CommitLineData
3d396eb1 1/*
5d242f1c 2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3d396eb1 3 * All rights reserved.
80922fbc 4 *
3d396eb1
AK		 5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
80922fbc 9 *
3d396eb1
AK		 10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
80922fbc 14 *
3d396eb1
AK		 15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
80922fbc 19 *
3d396eb1
AK		 20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
80922fbc 22 *
3d396eb1
AK		 23 * Contact Information:
24 * info@netxen.com
5d242f1c
DP		 25 * NetXen Inc,
26 * 18922 Forge Drive
27 * Cupertino, CA 95014-0701
3d396eb1
AK		 28 *
29 */
30
cb8011ad 31#include <linux/vmalloc.h>
e98e3350 32#include <linux/interrupt.h>
3d396eb1
AK		 33#include "netxen_nic_hw.h"
34
35#include "netxen_nic.h"
3d396eb1 36#include "netxen_nic_phan_reg.h"
3d396eb1 37
1494a814 38#include <linux/dma-mapping.h>
391587c3 39#include <linux/if_vlan.h>
c9bdd4b5 40#include <net/ip.h>
00977784 41#include <linux/ipv6.h>
1494a814 42
3d396eb1
AK		 43MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
44MODULE_LICENSE("GPL");
45MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
46
ceded32f 47char netxen_nic_driver_name[] = "netxen_nic";
3d396eb1 48static char netxen_nic_driver_string[] = "NetXen Network Driver version "
cb8011ad 49 NETXEN_NIC_LINUX_VERSIONID;
3d396eb1 50
2956640d
DP		 51static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
52
53/* Default to restricted 1G auto-neg mode */
54static int wol_port_mode = 5;
55
56static int use_msi = 1;
57
58static int use_msi_x = 1;
59
3d396eb1
AK		 60/* Local functions to NetXen NIC driver */
61static int __devinit netxen_nic_probe(struct pci_dev *pdev,
2956640d 62 const struct pci_device_id *ent);
3d396eb1
AK		 63static void __devexit 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 int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
67static void netxen_tx_timeout(struct net_device *netdev);
6d5aefb8 68static void netxen_tx_timeout_task(struct work_struct *work);
3d396eb1 69static void netxen_watchdog(unsigned long);
bea3348e 70static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 71#ifdef CONFIG_NET_POLL_CONTROLLER
72static void netxen_nic_poll_controller(struct net_device *netdev);
73#endif
1494a814 74static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 75static irqreturn_t netxen_msi_intr(int irq, void *data);
b3df68f8 76static irqreturn_t netxen_msix_intr(int irq, void *data);
3d396eb1
AK		 77
78/* PCI Device ID Table */
70081ac5 79#define ENTRY(device) \
040dec3b 80 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 81 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
82
3d396eb1 83static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 84 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
85 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
86 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
87 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
88 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
91 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 92 {0,}
93};
94
95MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
96
b1555130
AB		 97static struct workqueue_struct *netxen_workq;
98#define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
99#define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
100
ed25ffa1
AK		 101static void netxen_watchdog(unsigned long);
102
7830b22c
DP		 103static uint32_t crb_cmd_producer[4] = {
104 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
105 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
106};
107
c9fc891f 108void
3ce06a32 109netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
cb2107be 110 struct nx_host_tx_ring *tx_ring)
3176ff3e 111{
cb2107be
DP		 112 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
113
114 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
115 netif_stop_queue(adapter->netdev);
116 smp_mb();
117 }
3176ff3e
MT		 118}
119
7830b22c
DP		 120static uint32_t crb_cmd_consumer[4] = {
121 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
122 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
123};
124
3ce06a32
DP		 125static inline void
126netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
cb2107be 127 struct nx_host_tx_ring *tx_ring)
3176ff3e 128{
cb2107be 129 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
3176ff3e
MT		 130}
131
2956640d 132static uint32_t msi_tgt_status[8] = {
443be796 133 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 134 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
135 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
136 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 137};
138
2956640d
DP		 139static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
140
d8b100c5 141static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 142{
d8b100c5
DP		 143 struct netxen_adapter *adapter = sds_ring->adapter;
144
f98a9f69 145 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 146}
147
d8b100c5 148static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 149{
d8b100c5
DP		 150 struct netxen_adapter *adapter = sds_ring->adapter;
151
f98a9f69 152 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 153
092bc571
DP		 154 if (!NETXEN_IS_MSI_FAMILY(adapter))
155 adapter->pci_write_immediate(adapter,
156 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
4638aef1
SH		 157}
158
71dcddbd
DP		 159static int
160netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
161{
162 int size = sizeof(struct nx_host_sds_ring) * count;
163
164 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
165
166 return (recv_ctx->sds_rings == NULL);
167}
168
d8b100c5 169static void
71dcddbd
DP		 170netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
171{
172 if (recv_ctx->sds_rings != NULL)
173 kfree(recv_ctx->sds_rings);
174}
175
176static int
d8b100c5
DP		 177netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
178{
179 int ring;
180 struct nx_host_sds_ring *sds_ring;
181 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
182
71dcddbd
DP		 183 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
184 return 1;
185
d8b100c5
DP		 186 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
187 sds_ring = &recv_ctx->sds_rings[ring];
188 netif_napi_add(netdev, &sds_ring->napi,
189 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
190 }
71dcddbd
DP		 191
192 return 0;
d8b100c5
DP		 193}
194
195static void
196netxen_napi_enable(struct netxen_adapter *adapter)
197{
198 int ring;
199 struct nx_host_sds_ring *sds_ring;
200 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
201
202 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
203 sds_ring = &recv_ctx->sds_rings[ring];
204 napi_enable(&sds_ring->napi);
205 netxen_nic_enable_int(sds_ring);
206 }
207}
208
209static void
210netxen_napi_disable(struct netxen_adapter *adapter)
211{
212 int ring;
213 struct nx_host_sds_ring *sds_ring;
214 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
215
216 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
217 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 218 netxen_nic_disable_int(sds_ring);
b2af9cb0
DP		 219 napi_synchronize(&sds_ring->napi);
220 napi_disable(&sds_ring->napi);
d8b100c5
DP		 221 }
222}
223
50c643e7 224static int nx_set_dma_mask(struct netxen_adapter *adapter)
2956640d
DP		 225{
226 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 227 uint64_t mask, cmask;
228
229 adapter->pci_using_dac = 0;
2956640d 230
6afd142f 231 mask = DMA_BIT_MASK(32);
6afd142f 232 cmask = DMA_BIT_MASK(32);
1f434f63 233
50c643e7 234 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1f434f63 235#ifndef CONFIG_IA64
6afd142f 236 mask = DMA_BIT_MASK(35);
1f434f63 237#endif
50c643e7
DP		 238 } else {
239 mask = DMA_BIT_MASK(39);
240 cmask = mask;
241 }
242
2956640d 243 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 244 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 245 adapter->pci_using_dac = 1;
246 return 0;
247 }
2956640d 248
1f434f63
DP		 249 return -EIO;
250}
251
252/* Update addressable range if firmware supports it */
253static int
254nx_update_dma_mask(struct netxen_adapter *adapter)
255{
256 int change, shift, err;
50c643e7 257 uint64_t mask, old_mask, old_cmask;
1f434f63
DP		 258 struct pci_dev *pdev = adapter->pdev;
259
260 change = 0;
261
f98a9f69 262 shift = NXRD32(adapter, CRB_DMA_SHIFT);
1f434f63
DP		 263 if (shift >= 32)
264 return 0;
265
266 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
267 change = 1;
268 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
269 change = 1;
270
271 if (change) {
272 old_mask = pdev->dma_mask;
50c643e7
DP		 273 old_cmask = pdev->dev.coherent_dma_mask;
274
1f434f63
DP		 275 mask = (1ULL<<(32+shift)) - 1;
276
277 err = pci_set_dma_mask(pdev, mask);
278 if (err)
50c643e7
DP		 279 goto err_out;
280
281 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
282
283 err = pci_set_consistent_dma_mask(pdev, mask);
284 if (err)
285 goto err_out;
286 }
287 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
2956640d
DP		 288 }
289
2956640d 290 return 0;
50c643e7
DP		 291
292err_out:
293 pci_set_dma_mask(pdev, old_mask);
294 pci_set_consistent_dma_mask(pdev, old_cmask);
295 return err;
2956640d
DP		 296}
297
298static void netxen_check_options(struct netxen_adapter *adapter)
299{
438627c7
DP		 300 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
301 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
302 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
303 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
2956640d 304
f6d21f44
DP		 305 adapter->msix_supported = 0;
306 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
c7860a2a 307 adapter->msix_supported = !!use_msi_x;
f6d21f44
DP		 308 adapter->rss_supported = !!use_msi_x;
309 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
310 switch (adapter->ahw.board_type) {
311 case NETXEN_BRDTYPE_P2_SB31_10G:
312 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
f6d21f44
DP		 313 adapter->msix_supported = !!use_msi_x;
314 adapter->rss_supported = !!use_msi_x;
315 break;
316 default:
317 break;
318 }
319 }
2956640d 320
438627c7
DP		 321 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
322 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
323 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
2956640d 324
2956640d
DP		 325 return;
326}
327
328static int
329netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
330{
27c915a4 331 u32 val, timeout;
2956640d
DP		 332
333 if (first_boot == 0x55555555) {
334 /* This is the first boot after power up */
f98a9f69 335 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 336
337 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
338 return 0;
2956640d
DP		 339
340 /* PCI bus master workaround */
f98a9f69 341 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 342 if (!(first_boot & 0x4)) {
343 first_boot |= 0x4;
f98a9f69
DP		 344 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
345 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 346 }
347
348 /* This is the first boot after power up */
f98a9f69 349 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 350 if (first_boot != 0x80000f) {
351 /* clear the register for future unloads/loads */
f98a9f69 352 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 353 return -EIO;
2956640d
DP		 354 }
355
27c915a4 356 /* Start P2 boot loader */
f98a9f69
DP		 357 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
358 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 359 timeout = 0;
360 do {
361 msleep(1);
f98a9f69 362 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 363
364 if (++timeout > 5000)
365 return -EIO;
366
367 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 368 }
27c915a4 369 return 0;
2956640d
DP		 370}
371
372static void netxen_set_port_mode(struct netxen_adapter *adapter)
373{
374 u32 val, data;
375
1e2d0059 376 val = adapter->ahw.board_type;
2956640d
DP		 377 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
378 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
379 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
380 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 381 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 382 } else if (port_mode == NETXEN_PORT_MODE_XG) {
383 data = NETXEN_PORT_MODE_XG;
f98a9f69 384 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 385 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
386 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 387 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 388 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
389 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 390 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 391 } else {
392 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 393 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 394 }
395
396 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
397 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
398 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
399 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
400 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
401 }
f98a9f69 402 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 403 }
404}
405
2956640d
DP		 406static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
407{
408 u32 control;
409 int pos;
410
411 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
412 if (pos) {
413 pci_read_config_dword(pdev, pos, &control);
414 if (enable)
415 control |= PCI_MSIX_FLAGS_ENABLE;
416 else
417 control = 0;
418 pci_write_config_dword(pdev, pos, control);
419 }
420}
421
be339aee 422static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 423{
424 int i;
425
be339aee 426 for (i = 0; i < count; i++)
2956640d
DP		 427 adapter->msix_entries[i].entry = i;
428}
429
9dc28efe
DP		 430static int
431netxen_read_mac_addr(struct netxen_adapter *adapter)
432{
433 int i;
434 unsigned char *p;
435 __le64 mac_addr;
9dc28efe
DP		 436 struct net_device *netdev = adapter->netdev;
437 struct pci_dev *pdev = adapter->pdev;
438
9dc28efe
DP		 439 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
440 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
441 return -EIO;
442 } else {
443 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
444 return -EIO;
445 }
446
447 p = (unsigned char *)&mac_addr;
448 for (i = 0; i < 6; i++)
449 netdev->dev_addr[i] = *(p + 5 - i);
450
451 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
452
453 /* set station address */
454
e174961c
JB		 455 if (!is_valid_ether_addr(netdev->perm_addr))
456 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 457
458 return 0;
459}
460
3d0a3cc9
DP		 461int netxen_nic_set_mac(struct net_device *netdev, void *p)
462{
463 struct netxen_adapter *adapter = netdev_priv(netdev);
464 struct sockaddr *addr = p;
465
466 if (!is_valid_ether_addr(addr->sa_data))
467 return -EINVAL;
468
469 if (netif_running(netdev)) {
470 netif_device_detach(netdev);
471 netxen_napi_disable(adapter);
472 }
473
474 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
475 adapter->macaddr_set(adapter, addr->sa_data);
476
477 if (netif_running(netdev)) {
478 netif_device_attach(netdev);
479 netxen_napi_enable(adapter);
480 }
481 return 0;
482}
483
1abd266f
SH		 484static void netxen_set_multicast_list(struct net_device *dev)
485{
486 struct netxen_adapter *adapter = netdev_priv(dev);
487
3d0a3cc9 488 adapter->set_multi(dev);
1abd266f
SH		 489}
490
491static const struct net_device_ops netxen_netdev_ops = {
492 .ndo_open = netxen_nic_open,
493 .ndo_stop = netxen_nic_close,
494 .ndo_start_xmit = netxen_nic_xmit_frame,
495 .ndo_get_stats = netxen_nic_get_stats,
496 .ndo_validate_addr = eth_validate_addr,
497 .ndo_set_multicast_list = netxen_set_multicast_list,
498 .ndo_set_mac_address = netxen_nic_set_mac,
499 .ndo_change_mtu = netxen_nic_change_mtu,
500 .ndo_tx_timeout = netxen_tx_timeout,
501#ifdef CONFIG_NET_POLL_CONTROLLER
502 .ndo_poll_controller = netxen_nic_poll_controller,
503#endif
504};
505
97daee83
DP		 506static void
507netxen_setup_intr(struct netxen_adapter *adapter)
508{
509 struct netxen_legacy_intr_set *legacy_intrp;
510 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 511 int err, num_msix;
512
513 if (adapter->rss_supported) {
514 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
515 MSIX_ENTRIES_PER_ADAPTER : 2;
516 } else
517 num_msix = 1;
518
519 adapter->max_sds_rings = 1;
97daee83
DP		 520
521 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 522
523 if (adapter->ahw.revision_id >= NX_P3_B0)
524 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
525 else
526 legacy_intrp = &legacy_intr[0];
527 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
528 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
529 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
530 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
531
532 netxen_set_msix_bit(pdev, 0);
533
534 if (adapter->msix_supported) {
535
be339aee
DP		 536 netxen_init_msix_entries(adapter, num_msix);
537 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
538 if (err == 0) {
539 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
540 netxen_set_msix_bit(pdev, 1);
97daee83 541
be339aee
DP		 542 if (adapter->rss_supported)
543 adapter->max_sds_rings = num_msix;
97daee83 544
be339aee
DP		 545 dev_info(&pdev->dev, "using msi-x interrupts\n");
546 return;
547 }
548
549 if (err > 0)
550 pci_disable_msix(pdev);
551
552 /* fall through for msi */
97daee83 553 }
be339aee
DP		 554
555 if (use_msi && !pci_enable_msi(pdev)) {
556 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
557 adapter->msi_tgt_status =
558 msi_tgt_status[adapter->ahw.pci_func];
559 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 560 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 561 return;
562 }
563
564 dev_info(&pdev->dev, "using legacy interrupts\n");
565 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 566}
567
568static void
569netxen_teardown_intr(struct netxen_adapter *adapter)
570{
571 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
572 pci_disable_msix(adapter->pdev);
573 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
574 pci_disable_msi(adapter->pdev);
575}
576
577static void
578netxen_cleanup_pci_map(struct netxen_adapter *adapter)
579{
580 if (adapter->ahw.db_base != NULL)
581 iounmap(adapter->ahw.db_base);
582 if (adapter->ahw.pci_base0 != NULL)
583 iounmap(adapter->ahw.pci_base0);
584 if (adapter->ahw.pci_base1 != NULL)
585 iounmap(adapter->ahw.pci_base1);
586 if (adapter->ahw.pci_base2 != NULL)
587 iounmap(adapter->ahw.pci_base2);
588}
589
590static int
591netxen_setup_pci_map(struct netxen_adapter *adapter)
592{
593 void __iomem *mem_ptr0 = NULL;
594 void __iomem *mem_ptr1 = NULL;
595 void __iomem *mem_ptr2 = NULL;
596 void __iomem *db_ptr = NULL;
597
97daee83
DP		 598 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
599
600 struct pci_dev *pdev = adapter->pdev;
601 int pci_func = adapter->ahw.pci_func;
602
603 int err = 0;
604
605 /*
606 * Set the CRB window to invalid. If any register in window 0 is
607 * accessed it should set the window to 0 and then reset it to 1.
608 */
609 adapter->curr_window = 255;
610 adapter->ahw.qdr_sn_window = -1;
611 adapter->ahw.ddr_mn_window = -1;
612
613 /* remap phys address */
614 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
615 mem_len = pci_resource_len(pdev, 0);
616 pci_len0 = 0;
617
618 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
619 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
620 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
621 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
97daee83
DP		 622 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
623 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
624 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
625
626 /* 128 Meg of memory */
627 if (mem_len == NETXEN_PCI_128MB_SIZE) {
628 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
629 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
630 SECOND_PAGE_GROUP_SIZE);
631 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
632 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 633 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
634 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
635 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
636 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 637 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
638 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
639 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
640 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
641 adapter->pci_write_immediate =
642 netxen_nic_pci_write_immediate_2M;
97daee83
DP		 643 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
644 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
645 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
646
647 mem_ptr0 = pci_ioremap_bar(pdev, 0);
648 if (mem_ptr0 == NULL) {
649 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
650 return -EIO;
651 }
652 pci_len0 = mem_len;
97daee83
DP		 653
654 adapter->ahw.ddr_mn_window = 0;
655 adapter->ahw.qdr_sn_window = 0;
656
657 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
658 (pci_func * 0x20);
659 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
660 if (pci_func < 4)
661 adapter->ahw.ms_win_crb += (pci_func * 0x20);
662 else
663 adapter->ahw.ms_win_crb +=
664 0xA0 + ((pci_func - 4) * 0x10);
665 } else {
666 return -EIO;
667 }
668
669 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
670
671 adapter->ahw.pci_base0 = mem_ptr0;
672 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 673 adapter->ahw.pci_base1 = mem_ptr1;
674 adapter->ahw.pci_base2 = mem_ptr2;
675
676 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
677 goto skip_doorbell;
678
679 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
680 db_len = pci_resource_len(pdev, 4);
681
682 if (db_len == 0) {
683 printk(KERN_ERR "%s: doorbell is disabled\n",
684 netxen_nic_driver_name);
685 err = -EIO;
686 goto err_out;
687 }
688
689 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
690 if (!db_ptr) {
691 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
692 netxen_nic_driver_name);
693 err = -EIO;
694 goto err_out;
695 }
696
697skip_doorbell:
698 adapter->ahw.db_base = db_ptr;
699 adapter->ahw.db_len = db_len;
700 return 0;
701
702err_out:
703 netxen_cleanup_pci_map(adapter);
704 return err;
705}
706
ba599d4f 707static int
f7185c71 708netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
ba599d4f
DP		 709{
710 int val, err, first_boot;
711 struct pci_dev *pdev = adapter->pdev;
712
0b72e659 713 int first_driver = 0;
f7185c71
DP		 714
715 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
716 first_driver = (adapter->portnum == 0);
717 else
718 first_driver = (adapter->ahw.pci_func == 0);
0b72e659
DP		 719
720 if (!first_driver)
96f2ebd2 721 goto wait_init;
0b72e659 722
f98a9f69 723 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 724
725 err = netxen_check_hw_init(adapter, first_boot);
726 if (err) {
727 dev_err(&pdev->dev, "error in init HW init sequence\n");
728 return err;
729 }
730
f7185c71
DP		 731 if (request_fw)
732 netxen_request_firmware(adapter);
733
67c38fc6
DP		 734 err = netxen_need_fw_reset(adapter);
735 if (err <= 0)
736 return err;
737
ba599d4f 738 if (first_boot != 0x55555555) {
f98a9f69 739 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
ba599d4f
DP		 740 netxen_pinit_from_rom(adapter, 0);
741 msleep(1);
742 }
567c6c4e 743
f98a9f69 744 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 745 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
746 netxen_set_port_mode(adapter);
747
ba599d4f
DP		 748 netxen_load_firmware(adapter);
749
750 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
751
752 /* Initialize multicast addr pool owners */
753 val = 0x7654;
1e2d0059 754 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 755 val |= 0x0f000000;
f98a9f69 756 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 757
758 }
759
760 err = netxen_initialize_adapter_offload(adapter);
761 if (err)
762 return err;
763
764 /*
765 * Tell the hardware our version number.
766 */
767 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
768 | ((_NETXEN_NIC_LINUX_MINOR << 8))
769 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 770 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 771
96f2ebd2 772wait_init:
ba599d4f
DP		 773 /* Handshake with the card before we register the devices. */
774 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
775 if (err) {
776 netxen_free_adapter_offload(adapter);
777 return err;
778 }
779
780 return 0;
781}
782
9f5bc7f1
DP		 783static int
784netxen_nic_request_irq(struct netxen_adapter *adapter)
785{
786 irq_handler_t handler;
d8b100c5
DP		 787 struct nx_host_sds_ring *sds_ring;
788 int err, ring;
789
9f5bc7f1
DP		 790 unsigned long flags = IRQF_SAMPLE_RANDOM;
791 struct net_device *netdev = adapter->netdev;
d8b100c5 792 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 793
9f5bc7f1
DP		 794 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
795 handler = netxen_msix_intr;
796 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
797 handler = netxen_msi_intr;
798 else {
799 flags |= IRQF_SHARED;
800 handler = netxen_intr;
801 }
802 adapter->irq = netdev->irq;
803
d8b100c5
DP		 804 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
805 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 806 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 807 err = request_irq(sds_ring->irq, handler,
808 flags, sds_ring->name, sds_ring);
809 if (err)
810 return err;
811 }
812
813 return 0;
814}
815
816static void
817netxen_nic_free_irq(struct netxen_adapter *adapter)
818{
819 int ring;
820 struct nx_host_sds_ring *sds_ring;
821
822 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
823
824 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
825 sds_ring = &recv_ctx->sds_rings[ring];
826 free_irq(sds_ring->irq, sds_ring);
827 }
9f5bc7f1
DP		 828}
829
830static int
831netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
832{
833 int err;
834
835 err = adapter->init_port(adapter, adapter->physical_port);
836 if (err) {
837 printk(KERN_ERR "%s: Failed to initialize port %d\n",
838 netxen_nic_driver_name, adapter->portnum);
839 return err;
840 }
3d0a3cc9
DP		 841 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
842 adapter->macaddr_set(adapter, netdev->dev_addr);
9f5bc7f1 843
3d0a3cc9
DP		 844 adapter->set_multi(netdev);
845 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 846
847 adapter->ahw.linkup = 0;
9f5bc7f1 848
d8b100c5
DP		 849 if (adapter->max_sds_rings > 1)
850 netxen_config_rss(adapter, 1);
9f5bc7f1 851
b2af9cb0
DP		 852 netxen_napi_enable(adapter);
853
5103c9f7 854 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 855 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 856 else
857 netxen_nic_set_link_parameters(adapter);
858
859 mod_timer(&adapter->watchdog_timer, jiffies);
3bf26ce3 860
9f5bc7f1
DP		 861 return 0;
862}
863
864static void
865netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
866{
b2af9cb0 867 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 868 netif_carrier_off(netdev);
b2af9cb0 869 netif_tx_disable(netdev);
9f5bc7f1
DP		 870
871 if (adapter->stop_port)
872 adapter->stop_port(adapter);
873
5cf4d323
DP		 874 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
875 netxen_p3_free_mac_list(adapter);
876
be339aee
DP		 877 netxen_napi_disable(adapter);
878
9f5bc7f1 879 netxen_release_tx_buffers(adapter);
b2af9cb0 880 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1 881
9f5bc7f1 882 del_timer_sync(&adapter->watchdog_timer);
b2af9cb0 883 FLUSH_SCHEDULED_WORK();
9f5bc7f1
DP		 884}
885
886
887static int
888netxen_nic_attach(struct netxen_adapter *adapter)
889{
890 struct net_device *netdev = adapter->netdev;
891 struct pci_dev *pdev = adapter->pdev;
becf46a0 892 int err, ring;
d8b100c5 893 struct nx_host_rds_ring *rds_ring;
d877f1e3 894 struct nx_host_tx_ring *tx_ring;
9f5bc7f1
DP		 895
896 err = netxen_init_firmware(adapter);
897 if (err != 0) {
898 printk(KERN_ERR "Failed to init firmware\n");
899 return -EIO;
900 }
901
902 if (adapter->fw_major < 4)
903 adapter->max_rds_rings = 3;
904 else
905 adapter->max_rds_rings = 2;
906
907 err = netxen_alloc_sw_resources(adapter);
908 if (err) {
909 printk(KERN_ERR "%s: Error in setting sw resources\n",
910 netdev->name);
911 return err;
912 }
913
914 netxen_nic_clear_stats(adapter);
915
916 err = netxen_alloc_hw_resources(adapter);
917 if (err) {
918 printk(KERN_ERR "%s: Error in setting hw resources\n",
919 netdev->name);
920 goto err_out_free_sw;
921 }
922
923 if (adapter->fw_major < 4) {
4ea528a1 924 tx_ring = adapter->tx_ring;
d877f1e3
DP		 925 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
926 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
9f5bc7f1 927
cb2107be
DP		 928 tx_ring->producer = 0;
929 tx_ring->sw_consumer = 0;
930
931 netxen_nic_update_cmd_producer(adapter, tx_ring);
932 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 933 }
934
d8b100c5
DP		 935 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
936 rds_ring = &adapter->recv_ctx.rds_rings[ring];
937 netxen_post_rx_buffers(adapter, ring, rds_ring);
938 }
9f5bc7f1
DP		 939
940 err = netxen_nic_request_irq(adapter);
941 if (err) {
942 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
943 netdev->name);
944 goto err_out_free_rxbuf;
945 }
946
947 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
948 return 0;
949
950err_out_free_rxbuf:
951 netxen_release_rx_buffers(adapter);
952 netxen_free_hw_resources(adapter);
953err_out_free_sw:
954 netxen_free_sw_resources(adapter);
955 return err;
956}
957
958static void
959netxen_nic_detach(struct netxen_adapter *adapter)
960{
9f5bc7f1 961 netxen_free_hw_resources(adapter);
cf981ffb 962 netxen_release_rx_buffers(adapter);
be339aee 963 netxen_nic_free_irq(adapter);
9f5bc7f1
DP		 964 netxen_free_sw_resources(adapter);
965
966 adapter->is_up = 0;
967}
968
3d396eb1
AK		 969static int __devinit
970netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
971{
972 struct net_device *netdev = NULL;
973 struct netxen_adapter *adapter = NULL;
2956640d 974 int i = 0, err;
3176ff3e 975 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 976 uint8_t revision_id;
3d396eb1 977
3176ff3e 978 if (pdev->class != 0x020000) {
dcd56fdb 979 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 980 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 981 return -ENODEV;
982 }
2956640d 983
11d89d63
DP		 984 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
985 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
986 "will not be enabled.\n",
987 NX_P3_A0, NX_P3_B1);
988 return -ENODEV;
989 }
990
3d396eb1
AK		 991 if ((err = pci_enable_device(pdev)))
992 return err;
2956640d 993
3d396eb1
AK		 994 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
995 err = -ENODEV;
996 goto err_out_disable_pdev;
997 }
998
999 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1000 goto err_out_disable_pdev;
1001
1002 pci_set_master(pdev);
3176ff3e
MT		 1003
1004 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1005 if(!netdev) {
1006 printk(KERN_ERR"%s: Failed to allocate memory for the "
1007 "device block.Check system memory resource"
1008 " usage.\n", netxen_nic_driver_name);
1009 goto err_out_free_res;
1010 }
1011
3176ff3e
MT		 1012 SET_NETDEV_DEV(netdev, &pdev->dev);
1013
4cf1653a 1014 adapter = netdev_priv(netdev);
2956640d
DP		 1015 adapter->netdev = netdev;
1016 adapter->pdev = pdev;
13ba9c77 1017 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1018
1019 revision_id = pdev->revision;
1020 adapter->ahw.revision_id = revision_id;
1021
50c643e7 1022 err = nx_set_dma_mask(adapter);
2956640d
DP		 1023 if (err)
1024 goto err_out_free_netdev;
1025
3ce06a32 1026 rwlock_init(&adapter->adapter_lock);
d8b100c5 1027 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1028 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1029
97daee83
DP		 1030 err = netxen_setup_pci_map(adapter);
1031 if (err)
6c80b18d 1032 goto err_out_free_netdev;
3d396eb1 1033
2d1a3bbd 1034 /* This will be reset for mezz cards */
3176ff3e 1035 adapter->portnum = pci_func_id;
200eef20 1036 adapter->rx_csum = 1;
623621b0 1037 adapter->mc_enabled = 0;
83821a07 1038 if (NX_IS_REVISION_P3(revision_id))
2956640d 1039 adapter->max_mc_count = 38;
83821a07 1040 else
2956640d 1041 adapter->max_mc_count = 16;
3176ff3e 1042
1abd266f 1043 netdev->netdev_ops = &netxen_netdev_ops;
05aaa02d 1044 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 1045
1046 netxen_nic_change_mtu(netdev, netdev->mtu);
1047
1048 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1abd266f 1049
cdff1036 1050 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
a92e9e65 1051 netdev->features |= (NETIF_F_GRO);
cdff1036
DP		 1052 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1053
cd1f8160 1054 if (NX_IS_REVISION_P3(revision_id)) {
cdff1036
DP		 1055 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1056 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
cd1f8160 1057 }
3176ff3e 1058
cdff1036 1059 if (adapter->pci_using_dac) {
3176ff3e 1060 netdev->features |= NETIF_F_HIGHDMA;
cdff1036
DP		 1061 netdev->vlan_features |= NETIF_F_HIGHDMA;
1062 }
3176ff3e 1063
dcd56fdb
DP		 1064 if (netxen_nic_get_board_info(adapter) != 0) {
1065 printk("%s: Error getting board config info.\n",
2956640d 1066 netxen_nic_driver_name);
dcd56fdb
DP		 1067 err = -EIO;
1068 goto err_out_iounmap;
1069 }
6c80b18d 1070
6c80b18d
MT		 1071 netxen_initialize_adapter_ops(adapter);
1072
13ba9c77 1073 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1074 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1075 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1076 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1077 if (pci_func_id >= 2)
13ba9c77 1078 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1079 break;
1080 default:
1081 break;
1082 }
13ba9c77 1083
f7185c71 1084 err = netxen_start_firmware(adapter, 1);
0b72e659
DP		 1085 if (err)
1086 goto err_out_iounmap;
2956640d 1087
1f434f63
DP		 1088 nx_update_dma_mask(adapter);
1089
1e2d0059 1090 netxen_nic_get_firmware_info(adapter);
d9e651bc 1091
3d396eb1 1092 /*
6c80b18d 1093 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1094 */
dcd56fdb 1095 adapter->physical_port = adapter->portnum;
044fad0d 1096 if (adapter->fw_major < 4) {
f98a9f69 1097 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1098 if (i != 0x55555555)
1099 adapter->physical_port = i;
1100 }
6c80b18d 1101
438627c7 1102 netxen_check_options(adapter);
2956640d 1103
97daee83 1104 netxen_setup_intr(adapter);
2956640d 1105
d8b100c5
DP		 1106 netdev->irq = adapter->msix_entries[0].vector;
1107
71dcddbd
DP		 1108 if (netxen_napi_add(adapter, netdev))
1109 goto err_out_disable_msi;
2956640d 1110
2956640d 1111 init_timer(&adapter->watchdog_timer);
2956640d
DP		 1112 adapter->watchdog_timer.function = &netxen_watchdog;
1113 adapter->watchdog_timer.data = (unsigned long)adapter;
1114 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1115 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1116
9dc28efe
DP		 1117 err = netxen_read_mac_addr(adapter);
1118 if (err)
1119 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 1120
3176ff3e
MT		 1121 netif_carrier_off(netdev);
1122 netif_stop_queue(netdev);
1123
6c80b18d
MT		 1124 if ((err = register_netdev(netdev))) {
1125 printk(KERN_ERR "%s: register_netdev failed port #%d"
1126 " aborting\n", netxen_nic_driver_name,
1127 adapter->portnum);
1128 err = -EIO;
2956640d 1129 goto err_out_disable_msi;
6c80b18d
MT		 1130 }
1131
1132 pci_set_drvdata(pdev, adapter);
3d396eb1 1133
1e2d0059 1134 switch (adapter->ahw.port_type) {
2956640d
DP		 1135 case NETXEN_NIC_GBE:
1136 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1137 adapter->netdev->name);
1138 break;
1139 case NETXEN_NIC_XGBE:
1140 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1141 adapter->netdev->name);
1142 break;
3d396eb1 1143 }
3d396eb1 1144
2956640d
DP		 1145 return 0;
1146
1147err_out_disable_msi:
97daee83 1148 netxen_teardown_intr(adapter);
6c80b18d 1149
0b72e659 1150 netxen_free_adapter_offload(adapter);
3d396eb1 1151
2956640d 1152err_out_iounmap:
97daee83 1153 netxen_cleanup_pci_map(adapter);
cb8011ad 1154
6c80b18d
MT		 1155err_out_free_netdev:
1156 free_netdev(netdev);
1157
1158err_out_free_res:
3d396eb1 1159 pci_release_regions(pdev);
6c80b18d
MT		 1160
1161err_out_disable_pdev:
2956640d 1162 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1163 pci_disable_device(pdev);
1164 return err;
1165}
1166
1167static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1168{
1169 struct netxen_adapter *adapter;
3176ff3e 1170 struct net_device *netdev;
3d396eb1 1171
6c80b18d 1172 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1173 if (adapter == NULL)
1174 return;
1175
6c80b18d
MT		 1176 netdev = adapter->netdev;
1177
96acb6eb
DP		 1178 unregister_netdev(netdev);
1179
96acb6eb 1180 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1 1181 netxen_nic_detach(adapter);
96acb6eb 1182 }
3d396eb1 1183
439b454e
DP		 1184 if (adapter->portnum == 0)
1185 netxen_free_adapter_offload(adapter);
96acb6eb 1186
97daee83 1187 netxen_teardown_intr(adapter);
71dcddbd 1188 netxen_free_sds_rings(&adapter->recv_ctx);
3052246c 1189
97daee83 1190 netxen_cleanup_pci_map(adapter);
595e3fb8 1191
f7185c71
DP		 1192 netxen_release_firmware(adapter);
1193
595e3fb8 1194 pci_release_regions(pdev);
3052246c 1195 pci_disable_device(pdev);
595e3fb8
MT		 1196 pci_set_drvdata(pdev, NULL);
1197
6c80b18d 1198 free_netdev(netdev);
3d396eb1
AK		 1199}
1200
01542cd1 1201#ifdef CONFIG_PM
0b72e659
DP		 1202static int
1203netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1204{
1205
1206 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1207 struct net_device *netdev = adapter->netdev;
1208
1209 netif_device_detach(netdev);
1210
1211 if (netif_running(netdev))
1212 netxen_nic_down(adapter, netdev);
1213
1214 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1215 netxen_nic_detach(adapter);
1216
1217 pci_save_state(pdev);
1218
1219 if (netxen_nic_wol_supported(adapter)) {
1220 pci_enable_wake(pdev, PCI_D3cold, 1);
1221 pci_enable_wake(pdev, PCI_D3hot, 1);
1222 }
1223
1224 pci_disable_device(pdev);
1225 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1226
1227 return 0;
1228}
1229
1230static int
1231netxen_nic_resume(struct pci_dev *pdev)
1232{
1233 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1234 struct net_device *netdev = adapter->netdev;
1235 int err;
1236
1237 pci_set_power_state(pdev, PCI_D0);
1238 pci_restore_state(pdev);
1239
1240 err = pci_enable_device(pdev);
1241 if (err)
1242 return err;
1243
1244 adapter->curr_window = 255;
1245
f7185c71 1246 err = netxen_start_firmware(adapter, 0);
0b72e659
DP		 1247 if (err) {
1248 dev_err(&pdev->dev, "failed to start firmware\n");
1249 return err;
1250 }
1251
1252 if (netif_running(netdev)) {
1253 err = netxen_nic_attach(adapter);
1254 if (err)
1255 return err;
1256
1257 err = netxen_nic_up(adapter, netdev);
1258 if (err)
1259 return err;
1260
1261 netif_device_attach(netdev);
1262 }
1263
1264 return 0;
1265}
01542cd1 1266#endif
0b72e659 1267
3d396eb1
AK		 1268static int netxen_nic_open(struct net_device *netdev)
1269{
4cf1653a 1270 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1271 int err = 0;
3d396eb1 1272
dcd56fdb
DP		 1273 if (adapter->driver_mismatch)
1274 return -EIO;
1275
3d396eb1 1276 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1
DP		 1277 err = netxen_nic_attach(adapter);
1278 if (err)
3d396eb1 1279 return err;
ed25ffa1 1280 }
2956640d 1281
9f5bc7f1
DP		 1282 err = netxen_nic_up(adapter, netdev);
1283 if (err)
1284 goto err_out;
05aaa02d 1285
dcd56fdb 1286 netif_start_queue(netdev);
3d396eb1
AK		 1287
1288 return 0;
2956640d 1289
9f5bc7f1
DP		 1290err_out:
1291 netxen_nic_detach(adapter);
2956640d 1292 return err;
3d396eb1
AK		 1293}
1294
1295/*
1296 * netxen_nic_close - Disables a network interface entry point
1297 */
1298static int netxen_nic_close(struct net_device *netdev)
1299{
3176ff3e 1300 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1301
9f5bc7f1 1302 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1303 return 0;
1304}
1305
391587c3 1306static bool netxen_tso_check(struct net_device *netdev,
cd1f8160
DP		 1307 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1308{
391587c3
DP		 1309 bool tso = false;
1310 u8 opcode = TX_ETHER_PKT;
cdff1036
DP		 1311 __be16 protocol = skb->protocol;
1312 u16 flags = 0;
1313
09640e63 1314 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
cdff1036
DP		 1315 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1316 protocol = vh->h_vlan_encapsulated_proto;
1317 flags = FLAGS_VLAN_TAGGED;
1318 }
cd1f8160 1319
391587c3
DP		 1320 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1321 skb_shinfo(skb)->gso_size > 0) {
1322
1323 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1324 desc->total_hdr_length =
1325 skb_transport_offset(skb) + tcp_hdrlen(skb);
1326
09640e63 1327 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3
DP		 1328 TX_TCP_LSO6 : TX_TCP_LSO;
1329 tso = true;
cd1f8160
DP		 1330
1331 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1332 u8 l4proto;
1333
09640e63 1334 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1335 l4proto = ip_hdr(skb)->protocol;
1336
1337 if (l4proto == IPPROTO_TCP)
1338 opcode = TX_TCP_PKT;
1339 else if(l4proto == IPPROTO_UDP)
1340 opcode = TX_UDP_PKT;
09640e63 1341 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1342 l4proto = ipv6_hdr(skb)->nexthdr;
1343
1344 if (l4proto == IPPROTO_TCP)
1345 opcode = TX_TCPV6_PKT;
1346 else if(l4proto == IPPROTO_UDP)
1347 opcode = TX_UDPV6_PKT;
1348 }
cd1f8160
DP		 1349 }
1350 desc->tcp_hdr_offset = skb_transport_offset(skb);
1351 desc->ip_hdr_offset = skb_network_offset(skb);
cdff1036 1352 netxen_set_tx_flags_opcode(desc, flags, opcode);
391587c3 1353 return tso;
cd1f8160
DP		 1354}
1355
6f703406
DP		 1356static void
1357netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1358 struct netxen_cmd_buffer *pbuf, int last)
1359{
1360 int k;
1361 struct netxen_skb_frag *buffrag;
1362
1363 buffrag = &pbuf->frag_array[0];
1364 pci_unmap_single(pdev, buffrag->dma,
1365 buffrag->length, PCI_DMA_TODEVICE);
1366
1367 for (k = 1; k < last; k++) {
1368 buffrag = &pbuf->frag_array[k];
1369 pci_unmap_page(pdev, buffrag->dma,
1370 buffrag->length, PCI_DMA_TODEVICE);
1371 }
1372}
1373
d32cc3d2
DP		 1374static inline void
1375netxen_clear_cmddesc(u64 *desc)
1376{
1377 int i;
1378 for (i = 0; i < 8; i++)
1379 desc[i] = 0ULL;
1380}
1381
1382static int
1383netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1384{
3176ff3e 1385 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1386 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
3d396eb1 1387 unsigned int first_seg_len = skb->len - skb->data_len;
391587c3 1388 struct netxen_cmd_buffer *pbuf;
3d396eb1 1389 struct netxen_skb_frag *buffrag;
391587c3 1390 struct cmd_desc_type0 *hwdesc;
6f703406
DP		 1391 struct pci_dev *pdev = adapter->pdev;
1392 dma_addr_t temp_dma;
391587c3 1393 int i, k;
3d396eb1 1394
cb2107be 1395 u32 producer;
391587c3 1396 int frag_count, no_of_desc;
d877f1e3 1397 u32 num_txd = tx_ring->num_desc;
391587c3 1398 bool is_tso = false;
3d396eb1 1399
3d396eb1
AK		 1400 frag_count = skb_shinfo(skb)->nr_frags + 1;
1401
d877f1e3 1402 /* 4 fragments per cmd des */
3d396eb1 1403 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1404
cb2107be 1405 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
ba53e6b4 1406 netif_stop_queue(netdev);
ba53e6b4 1407 return NETDEV_TX_BUSY;
53a01e00 1408 }
3d396eb1 1409
cb2107be
DP		 1410 producer = tx_ring->producer;
1411
d877f1e3 1412 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1413 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1414 pbuf = &tx_ring->cmd_buf_arr[producer];
391587c3
DP		 1415
1416 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1417
3d396eb1 1418 pbuf->skb = skb;
3d396eb1 1419 pbuf->frag_count = frag_count;
3d396eb1 1420 buffrag = &pbuf->frag_array[0];
6f703406 1421 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
3d396eb1 1422 PCI_DMA_TODEVICE);
6f703406
DP		 1423 if (pci_dma_mapping_error(pdev, temp_dma))
1424 goto drop_packet;
1425
1426 buffrag->dma = temp_dma;
3d396eb1 1427 buffrag->length = first_seg_len;
391587c3
DP		 1428 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1429 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1430
d32cc3d2 1431 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
3d396eb1
AK		 1432 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1433
1434 for (i = 1, k = 1; i < frag_count; i++, k++) {
1435 struct skb_frag_struct *frag;
1436 int len, temp_len;
1437 unsigned long offset;
3d396eb1
AK		 1438
1439 /* move to next desc. if there is a need */
1440 if ((i & 0x3) == 0) {
1441 k = 0;
ba53e6b4 1442 producer = get_next_index(producer, num_txd);
d877f1e3 1443 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1444 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1445 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1446 pbuf->skb = NULL;
3d396eb1
AK		 1447 }
1448 frag = &skb_shinfo(skb)->frags[i - 1];
1449 len = frag->size;
1450 offset = frag->page_offset;
1451
1452 temp_len = len;
6f703406 1453 temp_dma = pci_map_page(pdev, frag->page, offset,
3d396eb1 1454 len, PCI_DMA_TODEVICE);
6f703406
DP		 1455 if (pci_dma_mapping_error(pdev, temp_dma)) {
1456 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1457 goto drop_packet;
1458 }
3d396eb1
AK		 1459
1460 buffrag++;
1461 buffrag->dma = temp_dma;
1462 buffrag->length = temp_len;
1463
d32cc3d2 1464 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
3d396eb1
AK		 1465 switch (k) {
1466 case 0:
3d396eb1
AK		 1467 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1468 break;
1469 case 1:
3d396eb1
AK		 1470 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1471 break;
1472 case 2:
3d396eb1
AK		 1473 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1474 break;
1475 case 3:
3d396eb1
AK		 1476 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1477 break;
1478 }
1479 frag++;
1480 }
ba53e6b4 1481 producer = get_next_index(producer, num_txd);
3d396eb1 1482
3d396eb1
AK		 1483 /* For LSO, we need to copy the MAC/IP/TCP headers into
1484 * the descriptor ring
1485 */
391587c3 1486 if (is_tso) {
3d396eb1 1487 int hdr_len, first_hdr_len, more_hdr;
391587c3 1488 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
ed25ffa1
AK		 1489 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1490 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1491 more_hdr = 1;
1492 } else {
1493 first_hdr_len = hdr_len;
1494 more_hdr = 0;
1495 }
1496 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
d877f1e3
DP		 1497 hwdesc = &tx_ring->desc_head[producer];
1498 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1499 pbuf->skb = NULL;
3d396eb1
AK		 1500
1501 /* copy the first 64 bytes */
ed25ffa1 1502 memcpy(((void *)hwdesc) + 2,
3d396eb1 1503 (void *)(skb->data), first_hdr_len);
ba53e6b4 1504 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1505
1506 if (more_hdr) {
d877f1e3
DP		 1507 hwdesc = &tx_ring->desc_head[producer];
1508 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1509 pbuf->skb = NULL;
3d396eb1
AK		 1510 /* copy the next 64 bytes - should be enough except
1511 * for pathological case
1512 */
d626f62b
ACM		 1513 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1514 hwdesc,
1515 (hdr_len -
1516 first_hdr_len));
ba53e6b4 1517 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1518 }
1519 }
6c80b18d 1520
d877f1e3 1521 tx_ring->producer = producer;
5dc16268 1522 adapter->stats.txbytes += skb->len;
6c80b18d 1523
cb2107be 1524 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1525
ba53e6b4 1526 adapter->stats.xmitcalled++;
3d396eb1 1527
3d396eb1 1528 return NETDEV_TX_OK;
6f703406
DP		 1529
1530drop_packet:
1531 adapter->stats.txdropped++;
1532 dev_kfree_skb_any(skb);
1533 return NETDEV_TX_OK;
3d396eb1
AK		 1534}
1535
a97342f9
DP		 1536static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1537{
1538 struct net_device *netdev = adapter->netdev;
1539 uint32_t temp, temp_state, temp_val;
1540 int rv = 0;
1541
f98a9f69 1542 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1543
1544 temp_state = nx_get_temp_state(temp);
1545 temp_val = nx_get_temp_val(temp);
1546
1547 if (temp_state == NX_TEMP_PANIC) {
1548 printk(KERN_ALERT
1549 "%s: Device temperature %d degrees C exceeds"
1550 " maximum allowed. Hardware has been shut down.\n",
e4135c2d
DP		 1551 netdev->name, temp_val);
1552
1553 netif_device_detach(netdev);
1554 netxen_nic_down(adapter, netdev);
1555 netxen_nic_detach(adapter);
a97342f9 1556
a97342f9
DP		 1557 rv = 1;
1558 } else if (temp_state == NX_TEMP_WARN) {
1559 if (adapter->temp == NX_TEMP_NORMAL) {
1560 printk(KERN_ALERT
1561 "%s: Device temperature %d degrees C "
1562 "exceeds operating range."
1563 " Immediate action needed.\n",
e4135c2d 1564 netdev->name, temp_val);
a97342f9
DP		 1565 }
1566 } else {
1567 if (adapter->temp == NX_TEMP_WARN) {
1568 printk(KERN_INFO
1569 "%s: Device temperature is now %d degrees C"
e4135c2d 1570 " in normal range.\n", netdev->name,
a97342f9
DP		 1571 temp_val);
1572 }
1573 }
1574 adapter->temp = temp_state;
1575 return rv;
1576}
1577
3bf26ce3 1578void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1579{
1580 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1581
1582 if (adapter->ahw.linkup && !linkup) {
1583 printk(KERN_INFO "%s: %s NIC Link is down\n",
1584 netxen_nic_driver_name, netdev->name);
1585 adapter->ahw.linkup = 0;
1586 if (netif_running(netdev)) {
1587 netif_carrier_off(netdev);
1588 netif_stop_queue(netdev);
1589 }
c7860a2a 1590
3bf26ce3
DP		 1591 if (!adapter->has_link_events)
1592 netxen_nic_set_link_parameters(adapter);
1593
a97342f9
DP		 1594 } else if (!adapter->ahw.linkup && linkup) {
1595 printk(KERN_INFO "%s: %s NIC Link is up\n",
1596 netxen_nic_driver_name, netdev->name);
1597 adapter->ahw.linkup = 1;
1598 if (netif_running(netdev)) {
1599 netif_carrier_on(netdev);
1600 netif_wake_queue(netdev);
1601 }
c7860a2a 1602
3bf26ce3
DP		 1603 if (!adapter->has_link_events)
1604 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1605 }
1606}
1607
3bf26ce3
DP		 1608static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1609{
1610 u32 val, port, linkup;
1611
1612 port = adapter->physical_port;
1613
1614 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1615 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1616 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1617 linkup = (val == XG_LINK_UP_P3);
1618 } else {
f98a9f69 1619 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1620 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1621 linkup = (val >> port) & 1;
1622 else {
1623 val = (val >> port*8) & 0xff;
1624 linkup = (val == XG_LINK_UP);
1625 }
1626 }
1627
1628 netxen_advert_link_change(adapter, linkup);
1629}
1630
3d396eb1
AK		 1631static void netxen_watchdog(unsigned long v)
1632{
1633 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1634
1635 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1636}
1637
a97342f9
DP		 1638void netxen_watchdog_task(struct work_struct *work)
1639{
1640 struct netxen_adapter *adapter =
1641 container_of(work, struct netxen_adapter, watchdog_task);
1642
e4135c2d 1643 if (netxen_nic_check_temp(adapter))
a97342f9
DP		 1644 return;
1645
3bf26ce3
DP		 1646 if (!adapter->has_link_events)
1647 netxen_nic_handle_phy_intr(adapter);
a97342f9 1648
922c4f2c
DP		 1649 if (netif_running(adapter->netdev))
1650 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1651}
1652
3d396eb1
AK		 1653static void netxen_tx_timeout(struct net_device *netdev)
1654{
3176ff3e
MT		 1655 struct netxen_adapter *adapter = (struct netxen_adapter *)
1656 netdev_priv(netdev);
1657 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1658}
1659
6d5aefb8 1660static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1661{
4790654c 1662 struct netxen_adapter *adapter =
3176ff3e 1663 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1664
b2af9cb0
DP		 1665 if (!netif_running(adapter->netdev))
1666 return;
1667
3d396eb1 1668 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1669 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1670
d8b100c5 1671 netxen_napi_disable(adapter);
ba53e6b4 1672
6c80b18d 1673 adapter->netdev->trans_start = jiffies;
ba53e6b4 1674
d8b100c5 1675 netxen_napi_enable(adapter);
6c80b18d 1676 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1677}
1678
a97342f9
DP		 1679struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1680{
1681 struct netxen_adapter *adapter = netdev_priv(netdev);
1682 struct net_device_stats *stats = &adapter->net_stats;
1683
1684 memset(stats, 0, sizeof(*stats));
1685
a97342f9 1686 stats->rx_packets = adapter->stats.no_rcv;
e98e3350 1687 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1688 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1689 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1690 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1691 stats->tx_dropped = adapter->stats.txdropped;
1692
1693 return stats;
1694}
1695
e4c93c81 1696static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1697{
d8b100c5
DP		 1698 struct nx_host_sds_ring *sds_ring = data;
1699 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1700 u32 status = 0;
1701
1702 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1703
1704 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1705 return IRQ_NONE;
e01872af 1706
d71e1be8
DP		 1707 if (adapter->ahw.revision_id >= NX_P3_B1) {
1708 /* check interrupt state machine, to be sure */
1709 status = adapter->pci_read_immediate(adapter,
1710 ISR_INT_STATE_REG);
1711 if (!ISR_LEGACY_INT_TRIGGERED(status))
1712 return IRQ_NONE;
1713
092bc571
DP		 1714 } else {
1715 unsigned long our_int = 0;
d71e1be8 1716
f98a9f69 1717 our_int = NXRD32(adapter, CRB_INT_VECTOR);
092bc571 1718
d71e1be8 1719 /* not our interrupt */
092bc571 1720 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1721 return IRQ_NONE;
1722
092bc571 1723 /* claim interrupt */
f98a9f69 1724 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1725 }
1726
092bc571
DP		 1727 /* clear interrupt */
1728 if (adapter->fw_major < 4)
d8b100c5 1729 netxen_nic_disable_int(sds_ring);
092bc571
DP		 1730
1731 adapter->pci_write_immediate(adapter,
1732 adapter->legacy_intr.tgt_status_reg,
1733 0xffffffff);
1734 /* read twice to ensure write is flushed */
1735 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1736 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1737
d8b100c5 1738 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1739
1740 return IRQ_HANDLED;
1741}
1742
e4c93c81 1743static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1744{
d8b100c5
DP		 1745 struct nx_host_sds_ring *sds_ring = data;
1746 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1747
092bc571
DP		 1748 /* clear interrupt */
1749 adapter->pci_write_immediate(adapter,
7a2469ce 1750 adapter->msi_tgt_status, 0xffffffff);
092bc571 1751
d8b100c5 1752 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1753 return IRQ_HANDLED;
1754}
1755
b3df68f8
DP		 1756static irqreturn_t netxen_msix_intr(int irq, void *data)
1757{
d8b100c5 1758 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1759
d8b100c5 1760 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1761 return IRQ_HANDLED;
1762}
1763
bea3348e 1764static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1765{
d8b100c5
DP		 1766 struct nx_host_sds_ring *sds_ring =
1767 container_of(napi, struct nx_host_sds_ring, napi);
1768
1769 struct netxen_adapter *adapter = sds_ring->adapter;
1770
05aaa02d 1771 int tx_complete;
bea3348e 1772 int work_done;
3d396eb1 1773
05aaa02d 1774 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1775
d8b100c5 1776 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 1777
05aaa02d 1778 if ((work_done < budget) && tx_complete) {
d8b100c5 1779 napi_complete(&sds_ring->napi);
b2af9cb0
DP		 1780 if (netif_running(adapter->netdev))
1781 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 1782 }
1783
bea3348e 1784 return work_done;
3d396eb1
AK		 1785}
1786
1787#ifdef CONFIG_NET_POLL_CONTROLLER
1788static void netxen_nic_poll_controller(struct net_device *netdev)
1789{
3176ff3e 1790 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1791 disable_irq(adapter->irq);
1494a814 1792 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1793 enable_irq(adapter->irq);
1794}
1795#endif
3d396eb1
AK		 1796
1797static struct pci_driver netxen_driver = {
1798 .name = netxen_nic_driver_name,
1799 .id_table = netxen_pci_tbl,
1800 .probe = netxen_nic_probe,
0b72e659 1801 .remove = __devexit_p(netxen_nic_remove),
01542cd1 1802#ifdef CONFIG_PM
0b72e659
DP		 1803 .suspend = netxen_nic_suspend,
1804 .resume = netxen_nic_resume
01542cd1 1805#endif
3d396eb1
AK		 1806};
1807
1808/* Driver Registration on NetXen card */
1809
1810static int __init netxen_init_module(void)
1811{
ff4fbd43
DP		 1812 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1813
79ea13ce 1814 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1815 return -ENOMEM;
1816
184231bd 1817 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1818}
1819
1820module_init(netxen_init_module);
1821
1822static void __exit netxen_exit_module(void)
1823{
3d396eb1 1824 pci_unregister_driver(&netxen_driver);
9de06610 1825 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1826}
1827
1828module_exit(netxen_exit_module);
Linux 6.x block layer and io_uring tree(s)