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netxen: fix deadlock on dev close
[deliverable/linux.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
2956640d
DP		 224static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
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);
2956640d
DP		 232 /*
233 * Consistent DMA mask is set to 32 bit because it cannot be set to
234 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
235 * come off this pool.
236 */
6afd142f 237 cmask = DMA_BIT_MASK(32);
1f434f63
DP		 238
239#ifndef CONFIG_IA64
240 if (revision_id >= NX_P3_B0)
6afd142f 241 mask = DMA_BIT_MASK(39);
1f434f63 242 else if (revision_id == NX_P2_C1)
6afd142f 243 mask = DMA_BIT_MASK(35);
1f434f63 244#endif
2956640d 245 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 246 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 247 adapter->pci_using_dac = 1;
248 return 0;
249 }
2956640d 250
1f434f63
DP		 251 return -EIO;
252}
253
254/* Update addressable range if firmware supports it */
255static int
256nx_update_dma_mask(struct netxen_adapter *adapter)
257{
258 int change, shift, err;
259 uint64_t mask, old_mask;
260 struct pci_dev *pdev = adapter->pdev;
261
262 change = 0;
263
f98a9f69 264 shift = NXRD32(adapter, CRB_DMA_SHIFT);
1f434f63
DP		 265 if (shift >= 32)
266 return 0;
267
268 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
269 change = 1;
270 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
271 change = 1;
272
273 if (change) {
274 old_mask = pdev->dma_mask;
275 mask = (1ULL<<(32+shift)) - 1;
276
277 err = pci_set_dma_mask(pdev, mask);
278 if (err)
279 return pci_set_dma_mask(pdev, old_mask);
2956640d
DP		 280 }
281
2956640d
DP		 282 return 0;
283}
284
285static void netxen_check_options(struct netxen_adapter *adapter)
286{
438627c7
DP		 287 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
288 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
289 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
290 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
2956640d 291
f6d21f44
DP		 292 adapter->msix_supported = 0;
293 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
c7860a2a 294 adapter->msix_supported = !!use_msi_x;
f6d21f44
DP		 295 adapter->rss_supported = !!use_msi_x;
296 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
297 switch (adapter->ahw.board_type) {
298 case NETXEN_BRDTYPE_P2_SB31_10G:
299 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
f6d21f44
DP		 300 adapter->msix_supported = !!use_msi_x;
301 adapter->rss_supported = !!use_msi_x;
302 break;
303 default:
304 break;
305 }
306 }
2956640d 307
438627c7
DP		 308 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
309 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
310 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
2956640d 311
2956640d
DP		 312 return;
313}
314
315static int
316netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
317{
27c915a4 318 u32 val, timeout;
2956640d
DP		 319
320 if (first_boot == 0x55555555) {
321 /* This is the first boot after power up */
f98a9f69 322 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 323
324 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
325 return 0;
2956640d
DP		 326
327 /* PCI bus master workaround */
f98a9f69 328 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 329 if (!(first_boot & 0x4)) {
330 first_boot |= 0x4;
f98a9f69
DP		 331 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
332 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 333 }
334
335 /* This is the first boot after power up */
f98a9f69 336 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 337 if (first_boot != 0x80000f) {
338 /* clear the register for future unloads/loads */
f98a9f69 339 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 340 return -EIO;
2956640d
DP		 341 }
342
27c915a4 343 /* Start P2 boot loader */
f98a9f69
DP		 344 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
345 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 346 timeout = 0;
347 do {
348 msleep(1);
f98a9f69 349 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 350
351 if (++timeout > 5000)
352 return -EIO;
353
354 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 355 }
27c915a4 356 return 0;
2956640d
DP		 357}
358
359static void netxen_set_port_mode(struct netxen_adapter *adapter)
360{
361 u32 val, data;
362
1e2d0059 363 val = adapter->ahw.board_type;
2956640d
DP		 364 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
365 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
366 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
367 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 368 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 369 } else if (port_mode == NETXEN_PORT_MODE_XG) {
370 data = NETXEN_PORT_MODE_XG;
f98a9f69 371 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 372 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
373 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 374 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 375 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
376 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 377 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 378 } else {
379 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 380 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 381 }
382
383 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
384 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
385 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
386 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
387 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
388 }
f98a9f69 389 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 390 }
391}
392
2956640d
DP		 393static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
394{
395 u32 control;
396 int pos;
397
398 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
399 if (pos) {
400 pci_read_config_dword(pdev, pos, &control);
401 if (enable)
402 control |= PCI_MSIX_FLAGS_ENABLE;
403 else
404 control = 0;
405 pci_write_config_dword(pdev, pos, control);
406 }
407}
408
be339aee 409static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 410{
411 int i;
412
be339aee 413 for (i = 0; i < count; i++)
2956640d
DP		 414 adapter->msix_entries[i].entry = i;
415}
416
9dc28efe
DP		 417static int
418netxen_read_mac_addr(struct netxen_adapter *adapter)
419{
420 int i;
421 unsigned char *p;
422 __le64 mac_addr;
9dc28efe
DP		 423 struct net_device *netdev = adapter->netdev;
424 struct pci_dev *pdev = adapter->pdev;
425
9dc28efe
DP		 426 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
427 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
428 return -EIO;
429 } else {
430 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
431 return -EIO;
432 }
433
434 p = (unsigned char *)&mac_addr;
435 for (i = 0; i < 6; i++)
436 netdev->dev_addr[i] = *(p + 5 - i);
437
438 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
439
440 /* set station address */
441
e174961c
JB		 442 if (!is_valid_ether_addr(netdev->perm_addr))
443 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 444
445 return 0;
446}
447
3d0a3cc9
DP		 448int netxen_nic_set_mac(struct net_device *netdev, void *p)
449{
450 struct netxen_adapter *adapter = netdev_priv(netdev);
451 struct sockaddr *addr = p;
452
453 if (!is_valid_ether_addr(addr->sa_data))
454 return -EINVAL;
455
456 if (netif_running(netdev)) {
457 netif_device_detach(netdev);
458 netxen_napi_disable(adapter);
459 }
460
461 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
462 adapter->macaddr_set(adapter, addr->sa_data);
463
464 if (netif_running(netdev)) {
465 netif_device_attach(netdev);
466 netxen_napi_enable(adapter);
467 }
468 return 0;
469}
470
1abd266f
SH		 471static void netxen_set_multicast_list(struct net_device *dev)
472{
473 struct netxen_adapter *adapter = netdev_priv(dev);
474
3d0a3cc9 475 adapter->set_multi(dev);
1abd266f
SH		 476}
477
478static const struct net_device_ops netxen_netdev_ops = {
479 .ndo_open = netxen_nic_open,
480 .ndo_stop = netxen_nic_close,
481 .ndo_start_xmit = netxen_nic_xmit_frame,
482 .ndo_get_stats = netxen_nic_get_stats,
483 .ndo_validate_addr = eth_validate_addr,
484 .ndo_set_multicast_list = netxen_set_multicast_list,
485 .ndo_set_mac_address = netxen_nic_set_mac,
486 .ndo_change_mtu = netxen_nic_change_mtu,
487 .ndo_tx_timeout = netxen_tx_timeout,
488#ifdef CONFIG_NET_POLL_CONTROLLER
489 .ndo_poll_controller = netxen_nic_poll_controller,
490#endif
491};
492
97daee83
DP		 493static void
494netxen_setup_intr(struct netxen_adapter *adapter)
495{
496 struct netxen_legacy_intr_set *legacy_intrp;
497 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 498 int err, num_msix;
499
500 if (adapter->rss_supported) {
501 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
502 MSIX_ENTRIES_PER_ADAPTER : 2;
503 } else
504 num_msix = 1;
505
506 adapter->max_sds_rings = 1;
97daee83
DP		 507
508 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 509
510 if (adapter->ahw.revision_id >= NX_P3_B0)
511 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
512 else
513 legacy_intrp = &legacy_intr[0];
514 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
515 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
516 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
517 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
518
519 netxen_set_msix_bit(pdev, 0);
520
521 if (adapter->msix_supported) {
522
be339aee
DP		 523 netxen_init_msix_entries(adapter, num_msix);
524 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
525 if (err == 0) {
526 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
527 netxen_set_msix_bit(pdev, 1);
97daee83 528
be339aee
DP		 529 if (adapter->rss_supported)
530 adapter->max_sds_rings = num_msix;
97daee83 531
be339aee
DP		 532 dev_info(&pdev->dev, "using msi-x interrupts\n");
533 return;
534 }
535
536 if (err > 0)
537 pci_disable_msix(pdev);
538
539 /* fall through for msi */
97daee83 540 }
be339aee
DP		 541
542 if (use_msi && !pci_enable_msi(pdev)) {
543 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
544 adapter->msi_tgt_status =
545 msi_tgt_status[adapter->ahw.pci_func];
546 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 547 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 548 return;
549 }
550
551 dev_info(&pdev->dev, "using legacy interrupts\n");
552 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 553}
554
555static void
556netxen_teardown_intr(struct netxen_adapter *adapter)
557{
558 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
559 pci_disable_msix(adapter->pdev);
560 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
561 pci_disable_msi(adapter->pdev);
562}
563
564static void
565netxen_cleanup_pci_map(struct netxen_adapter *adapter)
566{
567 if (adapter->ahw.db_base != NULL)
568 iounmap(adapter->ahw.db_base);
569 if (adapter->ahw.pci_base0 != NULL)
570 iounmap(adapter->ahw.pci_base0);
571 if (adapter->ahw.pci_base1 != NULL)
572 iounmap(adapter->ahw.pci_base1);
573 if (adapter->ahw.pci_base2 != NULL)
574 iounmap(adapter->ahw.pci_base2);
575}
576
577static int
578netxen_setup_pci_map(struct netxen_adapter *adapter)
579{
580 void __iomem *mem_ptr0 = NULL;
581 void __iomem *mem_ptr1 = NULL;
582 void __iomem *mem_ptr2 = NULL;
583 void __iomem *db_ptr = NULL;
584
97daee83
DP		 585 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
586
587 struct pci_dev *pdev = adapter->pdev;
588 int pci_func = adapter->ahw.pci_func;
589
590 int err = 0;
591
592 /*
593 * Set the CRB window to invalid. If any register in window 0 is
594 * accessed it should set the window to 0 and then reset it to 1.
595 */
596 adapter->curr_window = 255;
597 adapter->ahw.qdr_sn_window = -1;
598 adapter->ahw.ddr_mn_window = -1;
599
600 /* remap phys address */
601 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
602 mem_len = pci_resource_len(pdev, 0);
603 pci_len0 = 0;
604
605 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
606 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
607 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
608 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
97daee83
DP		 609 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
610 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
611 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
612
613 /* 128 Meg of memory */
614 if (mem_len == NETXEN_PCI_128MB_SIZE) {
615 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
616 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
617 SECOND_PAGE_GROUP_SIZE);
618 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
619 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 620 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
621 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
622 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
623 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 624 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
625 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
626 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
627 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
628 adapter->pci_write_immediate =
629 netxen_nic_pci_write_immediate_2M;
97daee83
DP		 630 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
631 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
632 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
633
634 mem_ptr0 = pci_ioremap_bar(pdev, 0);
635 if (mem_ptr0 == NULL) {
636 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
637 return -EIO;
638 }
639 pci_len0 = mem_len;
97daee83
DP		 640
641 adapter->ahw.ddr_mn_window = 0;
642 adapter->ahw.qdr_sn_window = 0;
643
644 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
645 (pci_func * 0x20);
646 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
647 if (pci_func < 4)
648 adapter->ahw.ms_win_crb += (pci_func * 0x20);
649 else
650 adapter->ahw.ms_win_crb +=
651 0xA0 + ((pci_func - 4) * 0x10);
652 } else {
653 return -EIO;
654 }
655
656 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
657
658 adapter->ahw.pci_base0 = mem_ptr0;
659 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 660 adapter->ahw.pci_base1 = mem_ptr1;
661 adapter->ahw.pci_base2 = mem_ptr2;
662
663 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
664 goto skip_doorbell;
665
666 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
667 db_len = pci_resource_len(pdev, 4);
668
669 if (db_len == 0) {
670 printk(KERN_ERR "%s: doorbell is disabled\n",
671 netxen_nic_driver_name);
672 err = -EIO;
673 goto err_out;
674 }
675
676 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
677 if (!db_ptr) {
678 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
679 netxen_nic_driver_name);
680 err = -EIO;
681 goto err_out;
682 }
683
684skip_doorbell:
685 adapter->ahw.db_base = db_ptr;
686 adapter->ahw.db_len = db_len;
687 return 0;
688
689err_out:
690 netxen_cleanup_pci_map(adapter);
691 return err;
692}
693
ba599d4f 694static int
f7185c71 695netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
ba599d4f
DP		 696{
697 int val, err, first_boot;
698 struct pci_dev *pdev = adapter->pdev;
699
0b72e659 700 int first_driver = 0;
f7185c71
DP		 701
702 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
703 first_driver = (adapter->portnum == 0);
704 else
705 first_driver = (adapter->ahw.pci_func == 0);
0b72e659
DP		 706
707 if (!first_driver)
96f2ebd2 708 goto wait_init;
0b72e659 709
f98a9f69 710 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 711
712 err = netxen_check_hw_init(adapter, first_boot);
713 if (err) {
714 dev_err(&pdev->dev, "error in init HW init sequence\n");
715 return err;
716 }
717
f7185c71
DP		 718 if (request_fw)
719 netxen_request_firmware(adapter);
720
67c38fc6
DP		 721 err = netxen_need_fw_reset(adapter);
722 if (err <= 0)
723 return err;
724
ba599d4f 725 if (first_boot != 0x55555555) {
f98a9f69 726 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
ba599d4f
DP		 727 netxen_pinit_from_rom(adapter, 0);
728 msleep(1);
729 }
567c6c4e 730
f98a9f69 731 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 732 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
733 netxen_set_port_mode(adapter);
734
ba599d4f
DP		 735 netxen_load_firmware(adapter);
736
737 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
738
739 /* Initialize multicast addr pool owners */
740 val = 0x7654;
1e2d0059 741 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 742 val |= 0x0f000000;
f98a9f69 743 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 744
745 }
746
747 err = netxen_initialize_adapter_offload(adapter);
748 if (err)
749 return err;
750
751 /*
752 * Tell the hardware our version number.
753 */
754 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
755 | ((_NETXEN_NIC_LINUX_MINOR << 8))
756 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 757 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 758
96f2ebd2 759wait_init:
ba599d4f
DP		 760 /* Handshake with the card before we register the devices. */
761 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
762 if (err) {
763 netxen_free_adapter_offload(adapter);
764 return err;
765 }
766
767 return 0;
768}
769
9f5bc7f1
DP		 770static int
771netxen_nic_request_irq(struct netxen_adapter *adapter)
772{
773 irq_handler_t handler;
d8b100c5
DP		 774 struct nx_host_sds_ring *sds_ring;
775 int err, ring;
776
9f5bc7f1
DP		 777 unsigned long flags = IRQF_SAMPLE_RANDOM;
778 struct net_device *netdev = adapter->netdev;
d8b100c5 779 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 780
9f5bc7f1
DP		 781 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
782 handler = netxen_msix_intr;
783 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
784 handler = netxen_msi_intr;
785 else {
786 flags |= IRQF_SHARED;
787 handler = netxen_intr;
788 }
789 adapter->irq = netdev->irq;
790
d8b100c5
DP		 791 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
792 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 793 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 794 err = request_irq(sds_ring->irq, handler,
795 flags, sds_ring->name, sds_ring);
796 if (err)
797 return err;
798 }
799
800 return 0;
801}
802
803static void
804netxen_nic_free_irq(struct netxen_adapter *adapter)
805{
806 int ring;
807 struct nx_host_sds_ring *sds_ring;
808
809 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
810
811 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
812 sds_ring = &recv_ctx->sds_rings[ring];
813 free_irq(sds_ring->irq, sds_ring);
814 }
9f5bc7f1
DP		 815}
816
817static int
818netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
819{
820 int err;
821
822 err = adapter->init_port(adapter, adapter->physical_port);
823 if (err) {
824 printk(KERN_ERR "%s: Failed to initialize port %d\n",
825 netxen_nic_driver_name, adapter->portnum);
826 return err;
827 }
3d0a3cc9
DP		 828 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
829 adapter->macaddr_set(adapter, netdev->dev_addr);
9f5bc7f1 830
3d0a3cc9
DP		 831 adapter->set_multi(netdev);
832 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 833
834 adapter->ahw.linkup = 0;
9f5bc7f1 835
d8b100c5
DP		 836 if (adapter->max_sds_rings > 1)
837 netxen_config_rss(adapter, 1);
9f5bc7f1 838
b2af9cb0
DP		 839 netxen_napi_enable(adapter);
840
5103c9f7 841 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 842 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 843 else
844 netxen_nic_set_link_parameters(adapter);
845
846 mod_timer(&adapter->watchdog_timer, jiffies);
3bf26ce3 847
9f5bc7f1
DP		 848 return 0;
849}
850
851static void
852netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
853{
b2af9cb0 854 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 855 netif_carrier_off(netdev);
b2af9cb0 856 netif_tx_disable(netdev);
9f5bc7f1
DP		 857
858 if (adapter->stop_port)
859 adapter->stop_port(adapter);
860
5cf4d323
DP		 861 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
862 netxen_p3_free_mac_list(adapter);
863
be339aee
DP		 864 netxen_napi_disable(adapter);
865
9f5bc7f1 866 netxen_release_tx_buffers(adapter);
b2af9cb0 867 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1 868
9f5bc7f1 869 del_timer_sync(&adapter->watchdog_timer);
b2af9cb0 870 FLUSH_SCHEDULED_WORK();
9f5bc7f1
DP		 871}
872
873
874static int
875netxen_nic_attach(struct netxen_adapter *adapter)
876{
877 struct net_device *netdev = adapter->netdev;
878 struct pci_dev *pdev = adapter->pdev;
becf46a0 879 int err, ring;
d8b100c5 880 struct nx_host_rds_ring *rds_ring;
d877f1e3 881 struct nx_host_tx_ring *tx_ring;
9f5bc7f1
DP		 882
883 err = netxen_init_firmware(adapter);
884 if (err != 0) {
885 printk(KERN_ERR "Failed to init firmware\n");
886 return -EIO;
887 }
888
889 if (adapter->fw_major < 4)
890 adapter->max_rds_rings = 3;
891 else
892 adapter->max_rds_rings = 2;
893
894 err = netxen_alloc_sw_resources(adapter);
895 if (err) {
896 printk(KERN_ERR "%s: Error in setting sw resources\n",
897 netdev->name);
898 return err;
899 }
900
901 netxen_nic_clear_stats(adapter);
902
903 err = netxen_alloc_hw_resources(adapter);
904 if (err) {
905 printk(KERN_ERR "%s: Error in setting hw resources\n",
906 netdev->name);
907 goto err_out_free_sw;
908 }
909
910 if (adapter->fw_major < 4) {
4ea528a1 911 tx_ring = adapter->tx_ring;
d877f1e3
DP		 912 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
913 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
9f5bc7f1 914
cb2107be
DP		 915 tx_ring->producer = 0;
916 tx_ring->sw_consumer = 0;
917
918 netxen_nic_update_cmd_producer(adapter, tx_ring);
919 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 920 }
921
d8b100c5
DP		 922 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
923 rds_ring = &adapter->recv_ctx.rds_rings[ring];
924 netxen_post_rx_buffers(adapter, ring, rds_ring);
925 }
9f5bc7f1
DP		 926
927 err = netxen_nic_request_irq(adapter);
928 if (err) {
929 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
930 netdev->name);
931 goto err_out_free_rxbuf;
932 }
933
934 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
935 return 0;
936
937err_out_free_rxbuf:
938 netxen_release_rx_buffers(adapter);
939 netxen_free_hw_resources(adapter);
940err_out_free_sw:
941 netxen_free_sw_resources(adapter);
942 return err;
943}
944
945static void
946netxen_nic_detach(struct netxen_adapter *adapter)
947{
9f5bc7f1 948 netxen_free_hw_resources(adapter);
cf981ffb 949 netxen_release_rx_buffers(adapter);
be339aee 950 netxen_nic_free_irq(adapter);
9f5bc7f1
DP		 951 netxen_free_sw_resources(adapter);
952
953 adapter->is_up = 0;
954}
955
3d396eb1
AK		 956static int __devinit
957netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
958{
959 struct net_device *netdev = NULL;
960 struct netxen_adapter *adapter = NULL;
2956640d 961 int i = 0, err;
3176ff3e 962 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 963 uint8_t revision_id;
3d396eb1 964
3176ff3e 965 if (pdev->class != 0x020000) {
dcd56fdb 966 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 967 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 968 return -ENODEV;
969 }
2956640d 970
11d89d63
DP		 971 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
972 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
973 "will not be enabled.\n",
974 NX_P3_A0, NX_P3_B1);
975 return -ENODEV;
976 }
977
3d396eb1
AK		 978 if ((err = pci_enable_device(pdev)))
979 return err;
2956640d 980
3d396eb1
AK		 981 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
982 err = -ENODEV;
983 goto err_out_disable_pdev;
984 }
985
986 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
987 goto err_out_disable_pdev;
988
989 pci_set_master(pdev);
3176ff3e
MT		 990
991 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
992 if(!netdev) {
993 printk(KERN_ERR"%s: Failed to allocate memory for the "
994 "device block.Check system memory resource"
995 " usage.\n", netxen_nic_driver_name);
996 goto err_out_free_res;
997 }
998
3176ff3e
MT		 999 SET_NETDEV_DEV(netdev, &pdev->dev);
1000
4cf1653a 1001 adapter = netdev_priv(netdev);
2956640d
DP		 1002 adapter->netdev = netdev;
1003 adapter->pdev = pdev;
13ba9c77 1004 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1005
1006 revision_id = pdev->revision;
1007 adapter->ahw.revision_id = revision_id;
1008
1009 err = nx_set_dma_mask(adapter, revision_id);
1010 if (err)
1011 goto err_out_free_netdev;
1012
3ce06a32 1013 rwlock_init(&adapter->adapter_lock);
d8b100c5 1014 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1015 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1016
97daee83
DP		 1017 err = netxen_setup_pci_map(adapter);
1018 if (err)
6c80b18d 1019 goto err_out_free_netdev;
3d396eb1 1020
2d1a3bbd 1021 /* This will be reset for mezz cards */
3176ff3e 1022 adapter->portnum = pci_func_id;
200eef20 1023 adapter->rx_csum = 1;
623621b0 1024 adapter->mc_enabled = 0;
83821a07 1025 if (NX_IS_REVISION_P3(revision_id))
2956640d 1026 adapter->max_mc_count = 38;
83821a07 1027 else
2956640d 1028 adapter->max_mc_count = 16;
3176ff3e 1029
1abd266f 1030 netdev->netdev_ops = &netxen_netdev_ops;
05aaa02d 1031 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 1032
1033 netxen_nic_change_mtu(netdev, netdev->mtu);
1034
1035 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1abd266f 1036
cdff1036 1037 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
a92e9e65 1038 netdev->features |= (NETIF_F_GRO);
cdff1036
DP		 1039 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1040
cd1f8160 1041 if (NX_IS_REVISION_P3(revision_id)) {
cdff1036
DP		 1042 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1043 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
cd1f8160 1044 }
3176ff3e 1045
cdff1036 1046 if (adapter->pci_using_dac) {
3176ff3e 1047 netdev->features |= NETIF_F_HIGHDMA;
cdff1036
DP		 1048 netdev->vlan_features |= NETIF_F_HIGHDMA;
1049 }
3176ff3e 1050
dcd56fdb
DP		 1051 if (netxen_nic_get_board_info(adapter) != 0) {
1052 printk("%s: Error getting board config info.\n",
2956640d 1053 netxen_nic_driver_name);
dcd56fdb
DP		 1054 err = -EIO;
1055 goto err_out_iounmap;
1056 }
6c80b18d 1057
6c80b18d
MT		 1058 netxen_initialize_adapter_ops(adapter);
1059
13ba9c77 1060 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1061 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1062 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1063 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1064 if (pci_func_id >= 2)
13ba9c77 1065 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1066 break;
1067 default:
1068 break;
1069 }
13ba9c77 1070
f7185c71 1071 err = netxen_start_firmware(adapter, 1);
0b72e659
DP		 1072 if (err)
1073 goto err_out_iounmap;
2956640d 1074
1f434f63
DP		 1075 nx_update_dma_mask(adapter);
1076
1e2d0059 1077 netxen_nic_get_firmware_info(adapter);
d9e651bc 1078
3d396eb1 1079 /*
6c80b18d 1080 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1081 */
dcd56fdb 1082 adapter->physical_port = adapter->portnum;
044fad0d 1083 if (adapter->fw_major < 4) {
f98a9f69 1084 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1085 if (i != 0x55555555)
1086 adapter->physical_port = i;
1087 }
6c80b18d 1088
438627c7 1089 netxen_check_options(adapter);
2956640d 1090
97daee83 1091 netxen_setup_intr(adapter);
2956640d 1092
d8b100c5
DP		 1093 netdev->irq = adapter->msix_entries[0].vector;
1094
71dcddbd
DP		 1095 if (netxen_napi_add(adapter, netdev))
1096 goto err_out_disable_msi;
2956640d 1097
2956640d 1098 init_timer(&adapter->watchdog_timer);
2956640d
DP		 1099 adapter->watchdog_timer.function = &netxen_watchdog;
1100 adapter->watchdog_timer.data = (unsigned long)adapter;
1101 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1102 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1103
9dc28efe
DP		 1104 err = netxen_read_mac_addr(adapter);
1105 if (err)
1106 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 1107
3176ff3e
MT		 1108 netif_carrier_off(netdev);
1109 netif_stop_queue(netdev);
1110
6c80b18d
MT		 1111 if ((err = register_netdev(netdev))) {
1112 printk(KERN_ERR "%s: register_netdev failed port #%d"
1113 " aborting\n", netxen_nic_driver_name,
1114 adapter->portnum);
1115 err = -EIO;
2956640d 1116 goto err_out_disable_msi;
6c80b18d
MT		 1117 }
1118
1119 pci_set_drvdata(pdev, adapter);
3d396eb1 1120
1e2d0059 1121 switch (adapter->ahw.port_type) {
2956640d
DP		 1122 case NETXEN_NIC_GBE:
1123 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1124 adapter->netdev->name);
1125 break;
1126 case NETXEN_NIC_XGBE:
1127 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1128 adapter->netdev->name);
1129 break;
3d396eb1 1130 }
3d396eb1 1131
2956640d
DP		 1132 return 0;
1133
1134err_out_disable_msi:
97daee83 1135 netxen_teardown_intr(adapter);
6c80b18d 1136
0b72e659 1137 netxen_free_adapter_offload(adapter);
3d396eb1 1138
2956640d 1139err_out_iounmap:
97daee83 1140 netxen_cleanup_pci_map(adapter);
cb8011ad 1141
6c80b18d
MT		 1142err_out_free_netdev:
1143 free_netdev(netdev);
1144
1145err_out_free_res:
3d396eb1 1146 pci_release_regions(pdev);
6c80b18d
MT		 1147
1148err_out_disable_pdev:
2956640d 1149 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1150 pci_disable_device(pdev);
1151 return err;
1152}
1153
1154static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1155{
1156 struct netxen_adapter *adapter;
3176ff3e 1157 struct net_device *netdev;
3d396eb1 1158
6c80b18d 1159 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1160 if (adapter == NULL)
1161 return;
1162
6c80b18d
MT		 1163 netdev = adapter->netdev;
1164
96acb6eb
DP		 1165 unregister_netdev(netdev);
1166
96acb6eb 1167 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1 1168 netxen_nic_detach(adapter);
96acb6eb 1169 }
3d396eb1 1170
439b454e
DP		 1171 if (adapter->portnum == 0)
1172 netxen_free_adapter_offload(adapter);
96acb6eb 1173
97daee83 1174 netxen_teardown_intr(adapter);
71dcddbd 1175 netxen_free_sds_rings(&adapter->recv_ctx);
3052246c 1176
97daee83 1177 netxen_cleanup_pci_map(adapter);
595e3fb8 1178
f7185c71
DP		 1179 netxen_release_firmware(adapter);
1180
595e3fb8 1181 pci_release_regions(pdev);
3052246c 1182 pci_disable_device(pdev);
595e3fb8
MT		 1183 pci_set_drvdata(pdev, NULL);
1184
6c80b18d 1185 free_netdev(netdev);
3d396eb1
AK		 1186}
1187
01542cd1 1188#ifdef CONFIG_PM
0b72e659
DP		 1189static int
1190netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1191{
1192
1193 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1194 struct net_device *netdev = adapter->netdev;
1195
1196 netif_device_detach(netdev);
1197
1198 if (netif_running(netdev))
1199 netxen_nic_down(adapter, netdev);
1200
1201 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1202 netxen_nic_detach(adapter);
1203
1204 pci_save_state(pdev);
1205
1206 if (netxen_nic_wol_supported(adapter)) {
1207 pci_enable_wake(pdev, PCI_D3cold, 1);
1208 pci_enable_wake(pdev, PCI_D3hot, 1);
1209 }
1210
1211 pci_disable_device(pdev);
1212 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1213
1214 return 0;
1215}
1216
1217static int
1218netxen_nic_resume(struct pci_dev *pdev)
1219{
1220 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1221 struct net_device *netdev = adapter->netdev;
1222 int err;
1223
1224 pci_set_power_state(pdev, PCI_D0);
1225 pci_restore_state(pdev);
1226
1227 err = pci_enable_device(pdev);
1228 if (err)
1229 return err;
1230
1231 adapter->curr_window = 255;
1232
f7185c71 1233 err = netxen_start_firmware(adapter, 0);
0b72e659
DP		 1234 if (err) {
1235 dev_err(&pdev->dev, "failed to start firmware\n");
1236 return err;
1237 }
1238
1239 if (netif_running(netdev)) {
1240 err = netxen_nic_attach(adapter);
1241 if (err)
1242 return err;
1243
1244 err = netxen_nic_up(adapter, netdev);
1245 if (err)
1246 return err;
1247
1248 netif_device_attach(netdev);
1249 }
1250
1251 return 0;
1252}
01542cd1 1253#endif
0b72e659 1254
3d396eb1
AK		 1255static int netxen_nic_open(struct net_device *netdev)
1256{
4cf1653a 1257 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1258 int err = 0;
3d396eb1 1259
dcd56fdb
DP		 1260 if (adapter->driver_mismatch)
1261 return -EIO;
1262
3d396eb1 1263 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1
DP		 1264 err = netxen_nic_attach(adapter);
1265 if (err)
3d396eb1 1266 return err;
ed25ffa1 1267 }
2956640d 1268
9f5bc7f1
DP		 1269 err = netxen_nic_up(adapter, netdev);
1270 if (err)
1271 goto err_out;
05aaa02d 1272
dcd56fdb 1273 netif_start_queue(netdev);
3d396eb1
AK		 1274
1275 return 0;
2956640d 1276
9f5bc7f1
DP		 1277err_out:
1278 netxen_nic_detach(adapter);
2956640d 1279 return err;
3d396eb1
AK		 1280}
1281
1282/*
1283 * netxen_nic_close - Disables a network interface entry point
1284 */
1285static int netxen_nic_close(struct net_device *netdev)
1286{
3176ff3e 1287 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1288
9f5bc7f1 1289 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1290 return 0;
1291}
1292
391587c3 1293static bool netxen_tso_check(struct net_device *netdev,
cd1f8160
DP		 1294 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1295{
391587c3
DP		 1296 bool tso = false;
1297 u8 opcode = TX_ETHER_PKT;
cdff1036
DP		 1298 __be16 protocol = skb->protocol;
1299 u16 flags = 0;
1300
09640e63 1301 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
cdff1036
DP		 1302 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1303 protocol = vh->h_vlan_encapsulated_proto;
1304 flags = FLAGS_VLAN_TAGGED;
1305 }
cd1f8160 1306
391587c3
DP		 1307 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1308 skb_shinfo(skb)->gso_size > 0) {
1309
1310 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1311 desc->total_hdr_length =
1312 skb_transport_offset(skb) + tcp_hdrlen(skb);
1313
09640e63 1314 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3
DP		 1315 TX_TCP_LSO6 : TX_TCP_LSO;
1316 tso = true;
cd1f8160
DP		 1317
1318 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1319 u8 l4proto;
1320
09640e63 1321 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1322 l4proto = ip_hdr(skb)->protocol;
1323
1324 if (l4proto == IPPROTO_TCP)
1325 opcode = TX_TCP_PKT;
1326 else if(l4proto == IPPROTO_UDP)
1327 opcode = TX_UDP_PKT;
09640e63 1328 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1329 l4proto = ipv6_hdr(skb)->nexthdr;
1330
1331 if (l4proto == IPPROTO_TCP)
1332 opcode = TX_TCPV6_PKT;
1333 else if(l4proto == IPPROTO_UDP)
1334 opcode = TX_UDPV6_PKT;
1335 }
cd1f8160
DP		 1336 }
1337 desc->tcp_hdr_offset = skb_transport_offset(skb);
1338 desc->ip_hdr_offset = skb_network_offset(skb);
cdff1036 1339 netxen_set_tx_flags_opcode(desc, flags, opcode);
391587c3 1340 return tso;
cd1f8160
DP		 1341}
1342
6f703406
DP		 1343static void
1344netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1345 struct netxen_cmd_buffer *pbuf, int last)
1346{
1347 int k;
1348 struct netxen_skb_frag *buffrag;
1349
1350 buffrag = &pbuf->frag_array[0];
1351 pci_unmap_single(pdev, buffrag->dma,
1352 buffrag->length, PCI_DMA_TODEVICE);
1353
1354 for (k = 1; k < last; k++) {
1355 buffrag = &pbuf->frag_array[k];
1356 pci_unmap_page(pdev, buffrag->dma,
1357 buffrag->length, PCI_DMA_TODEVICE);
1358 }
1359}
1360
d32cc3d2
DP		 1361static inline void
1362netxen_clear_cmddesc(u64 *desc)
1363{
1364 int i;
1365 for (i = 0; i < 8; i++)
1366 desc[i] = 0ULL;
1367}
1368
1369static int
1370netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1371{
3176ff3e 1372 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1373 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
3d396eb1 1374 unsigned int first_seg_len = skb->len - skb->data_len;
391587c3 1375 struct netxen_cmd_buffer *pbuf;
3d396eb1 1376 struct netxen_skb_frag *buffrag;
391587c3 1377 struct cmd_desc_type0 *hwdesc;
6f703406
DP		 1378 struct pci_dev *pdev = adapter->pdev;
1379 dma_addr_t temp_dma;
391587c3 1380 int i, k;
3d396eb1 1381
cb2107be 1382 u32 producer;
391587c3 1383 int frag_count, no_of_desc;
d877f1e3 1384 u32 num_txd = tx_ring->num_desc;
391587c3 1385 bool is_tso = false;
3d396eb1 1386
3d396eb1
AK		 1387 frag_count = skb_shinfo(skb)->nr_frags + 1;
1388
d877f1e3 1389 /* 4 fragments per cmd des */
3d396eb1 1390 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1391
cb2107be 1392 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
ba53e6b4 1393 netif_stop_queue(netdev);
ba53e6b4 1394 return NETDEV_TX_BUSY;
53a01e00 1395 }
3d396eb1 1396
cb2107be
DP		 1397 producer = tx_ring->producer;
1398
d877f1e3 1399 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1400 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1401 pbuf = &tx_ring->cmd_buf_arr[producer];
391587c3
DP		 1402
1403 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1404
3d396eb1 1405 pbuf->skb = skb;
3d396eb1 1406 pbuf->frag_count = frag_count;
3d396eb1 1407 buffrag = &pbuf->frag_array[0];
6f703406 1408 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
3d396eb1 1409 PCI_DMA_TODEVICE);
6f703406
DP		 1410 if (pci_dma_mapping_error(pdev, temp_dma))
1411 goto drop_packet;
1412
1413 buffrag->dma = temp_dma;
3d396eb1 1414 buffrag->length = first_seg_len;
391587c3
DP		 1415 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1416 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1417
d32cc3d2 1418 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
3d396eb1
AK		 1419 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1420
1421 for (i = 1, k = 1; i < frag_count; i++, k++) {
1422 struct skb_frag_struct *frag;
1423 int len, temp_len;
1424 unsigned long offset;
3d396eb1
AK		 1425
1426 /* move to next desc. if there is a need */
1427 if ((i & 0x3) == 0) {
1428 k = 0;
ba53e6b4 1429 producer = get_next_index(producer, num_txd);
d877f1e3 1430 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1431 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1432 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1433 pbuf->skb = NULL;
3d396eb1
AK		 1434 }
1435 frag = &skb_shinfo(skb)->frags[i - 1];
1436 len = frag->size;
1437 offset = frag->page_offset;
1438
1439 temp_len = len;
6f703406 1440 temp_dma = pci_map_page(pdev, frag->page, offset,
3d396eb1 1441 len, PCI_DMA_TODEVICE);
6f703406
DP		 1442 if (pci_dma_mapping_error(pdev, temp_dma)) {
1443 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1444 goto drop_packet;
1445 }
3d396eb1
AK		 1446
1447 buffrag++;
1448 buffrag->dma = temp_dma;
1449 buffrag->length = temp_len;
1450
d32cc3d2 1451 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
3d396eb1
AK		 1452 switch (k) {
1453 case 0:
3d396eb1
AK		 1454 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1455 break;
1456 case 1:
3d396eb1
AK		 1457 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1458 break;
1459 case 2:
3d396eb1
AK		 1460 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1461 break;
1462 case 3:
3d396eb1
AK		 1463 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1464 break;
1465 }
1466 frag++;
1467 }
ba53e6b4 1468 producer = get_next_index(producer, num_txd);
3d396eb1 1469
3d396eb1
AK		 1470 /* For LSO, we need to copy the MAC/IP/TCP headers into
1471 * the descriptor ring
1472 */
391587c3 1473 if (is_tso) {
3d396eb1 1474 int hdr_len, first_hdr_len, more_hdr;
391587c3 1475 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
ed25ffa1
AK		 1476 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1477 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1478 more_hdr = 1;
1479 } else {
1480 first_hdr_len = hdr_len;
1481 more_hdr = 0;
1482 }
1483 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
d877f1e3
DP		 1484 hwdesc = &tx_ring->desc_head[producer];
1485 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1486 pbuf->skb = NULL;
3d396eb1
AK		 1487
1488 /* copy the first 64 bytes */
ed25ffa1 1489 memcpy(((void *)hwdesc) + 2,
3d396eb1 1490 (void *)(skb->data), first_hdr_len);
ba53e6b4 1491 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1492
1493 if (more_hdr) {
d877f1e3
DP		 1494 hwdesc = &tx_ring->desc_head[producer];
1495 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1496 pbuf->skb = NULL;
3d396eb1
AK		 1497 /* copy the next 64 bytes - should be enough except
1498 * for pathological case
1499 */
d626f62b
ACM		 1500 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1501 hwdesc,
1502 (hdr_len -
1503 first_hdr_len));
ba53e6b4 1504 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1505 }
1506 }
6c80b18d 1507
d877f1e3 1508 tx_ring->producer = producer;
5dc16268 1509 adapter->stats.txbytes += skb->len;
6c80b18d 1510
cb2107be 1511 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1512
ba53e6b4 1513 adapter->stats.xmitcalled++;
3d396eb1 1514
3d396eb1 1515 return NETDEV_TX_OK;
6f703406
DP		 1516
1517drop_packet:
1518 adapter->stats.txdropped++;
1519 dev_kfree_skb_any(skb);
1520 return NETDEV_TX_OK;
3d396eb1
AK		 1521}
1522
a97342f9
DP		 1523static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1524{
1525 struct net_device *netdev = adapter->netdev;
1526 uint32_t temp, temp_state, temp_val;
1527 int rv = 0;
1528
f98a9f69 1529 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1530
1531 temp_state = nx_get_temp_state(temp);
1532 temp_val = nx_get_temp_val(temp);
1533
1534 if (temp_state == NX_TEMP_PANIC) {
1535 printk(KERN_ALERT
1536 "%s: Device temperature %d degrees C exceeds"
1537 " maximum allowed. Hardware has been shut down.\n",
1538 netxen_nic_driver_name, temp_val);
1539
1540 netif_carrier_off(netdev);
1541 netif_stop_queue(netdev);
1542 rv = 1;
1543 } else if (temp_state == NX_TEMP_WARN) {
1544 if (adapter->temp == NX_TEMP_NORMAL) {
1545 printk(KERN_ALERT
1546 "%s: Device temperature %d degrees C "
1547 "exceeds operating range."
1548 " Immediate action needed.\n",
1549 netxen_nic_driver_name, temp_val);
1550 }
1551 } else {
1552 if (adapter->temp == NX_TEMP_WARN) {
1553 printk(KERN_INFO
1554 "%s: Device temperature is now %d degrees C"
1555 " in normal range.\n", netxen_nic_driver_name,
1556 temp_val);
1557 }
1558 }
1559 adapter->temp = temp_state;
1560 return rv;
1561}
1562
3bf26ce3 1563void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1564{
1565 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1566
1567 if (adapter->ahw.linkup && !linkup) {
1568 printk(KERN_INFO "%s: %s NIC Link is down\n",
1569 netxen_nic_driver_name, netdev->name);
1570 adapter->ahw.linkup = 0;
1571 if (netif_running(netdev)) {
1572 netif_carrier_off(netdev);
1573 netif_stop_queue(netdev);
1574 }
c7860a2a 1575
3bf26ce3
DP		 1576 if (!adapter->has_link_events)
1577 netxen_nic_set_link_parameters(adapter);
1578
a97342f9
DP		 1579 } else if (!adapter->ahw.linkup && linkup) {
1580 printk(KERN_INFO "%s: %s NIC Link is up\n",
1581 netxen_nic_driver_name, netdev->name);
1582 adapter->ahw.linkup = 1;
1583 if (netif_running(netdev)) {
1584 netif_carrier_on(netdev);
1585 netif_wake_queue(netdev);
1586 }
c7860a2a 1587
3bf26ce3
DP		 1588 if (!adapter->has_link_events)
1589 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1590 }
1591}
1592
3bf26ce3
DP		 1593static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1594{
1595 u32 val, port, linkup;
1596
1597 port = adapter->physical_port;
1598
1599 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1600 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1601 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1602 linkup = (val == XG_LINK_UP_P3);
1603 } else {
f98a9f69 1604 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1605 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1606 linkup = (val >> port) & 1;
1607 else {
1608 val = (val >> port*8) & 0xff;
1609 linkup = (val == XG_LINK_UP);
1610 }
1611 }
1612
1613 netxen_advert_link_change(adapter, linkup);
1614}
1615
3d396eb1
AK		 1616static void netxen_watchdog(unsigned long v)
1617{
1618 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1619
1620 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1621}
1622
a97342f9
DP		 1623void netxen_watchdog_task(struct work_struct *work)
1624{
1625 struct netxen_adapter *adapter =
1626 container_of(work, struct netxen_adapter, watchdog_task);
1627
1628 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1629 return;
1630
3bf26ce3
DP		 1631 if (!adapter->has_link_events)
1632 netxen_nic_handle_phy_intr(adapter);
a97342f9 1633
922c4f2c
DP		 1634 if (netif_running(adapter->netdev))
1635 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1636}
1637
3d396eb1
AK		 1638static void netxen_tx_timeout(struct net_device *netdev)
1639{
3176ff3e
MT		 1640 struct netxen_adapter *adapter = (struct netxen_adapter *)
1641 netdev_priv(netdev);
1642 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1643}
1644
6d5aefb8 1645static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1646{
4790654c 1647 struct netxen_adapter *adapter =
3176ff3e 1648 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1649
b2af9cb0
DP		 1650 if (!netif_running(adapter->netdev))
1651 return;
1652
3d396eb1 1653 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1654 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1655
d8b100c5 1656 netxen_napi_disable(adapter);
ba53e6b4 1657
6c80b18d 1658 adapter->netdev->trans_start = jiffies;
ba53e6b4 1659
d8b100c5 1660 netxen_napi_enable(adapter);
6c80b18d 1661 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1662}
1663
a97342f9
DP		 1664struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1665{
1666 struct netxen_adapter *adapter = netdev_priv(netdev);
1667 struct net_device_stats *stats = &adapter->net_stats;
1668
1669 memset(stats, 0, sizeof(*stats));
1670
a97342f9 1671 stats->rx_packets = adapter->stats.no_rcv;
e98e3350 1672 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1673 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1674 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1675 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1676 stats->tx_dropped = adapter->stats.txdropped;
1677
1678 return stats;
1679}
1680
e4c93c81 1681static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1682{
d8b100c5
DP		 1683 struct nx_host_sds_ring *sds_ring = data;
1684 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1685 u32 status = 0;
1686
1687 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1688
1689 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1690 return IRQ_NONE;
e01872af 1691
d71e1be8
DP		 1692 if (adapter->ahw.revision_id >= NX_P3_B1) {
1693 /* check interrupt state machine, to be sure */
1694 status = adapter->pci_read_immediate(adapter,
1695 ISR_INT_STATE_REG);
1696 if (!ISR_LEGACY_INT_TRIGGERED(status))
1697 return IRQ_NONE;
1698
092bc571
DP		 1699 } else {
1700 unsigned long our_int = 0;
d71e1be8 1701
f98a9f69 1702 our_int = NXRD32(adapter, CRB_INT_VECTOR);
092bc571 1703
d71e1be8 1704 /* not our interrupt */
092bc571 1705 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1706 return IRQ_NONE;
1707
092bc571 1708 /* claim interrupt */
f98a9f69 1709 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1710 }
1711
092bc571
DP		 1712 /* clear interrupt */
1713 if (adapter->fw_major < 4)
d8b100c5 1714 netxen_nic_disable_int(sds_ring);
092bc571
DP		 1715
1716 adapter->pci_write_immediate(adapter,
1717 adapter->legacy_intr.tgt_status_reg,
1718 0xffffffff);
1719 /* read twice to ensure write is flushed */
1720 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1721 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1722
d8b100c5 1723 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1724
1725 return IRQ_HANDLED;
1726}
1727
e4c93c81 1728static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1729{
d8b100c5
DP		 1730 struct nx_host_sds_ring *sds_ring = data;
1731 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1732
092bc571
DP		 1733 /* clear interrupt */
1734 adapter->pci_write_immediate(adapter,
7a2469ce 1735 adapter->msi_tgt_status, 0xffffffff);
092bc571 1736
d8b100c5 1737 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1738 return IRQ_HANDLED;
1739}
1740
b3df68f8
DP		 1741static irqreturn_t netxen_msix_intr(int irq, void *data)
1742{
d8b100c5 1743 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1744
d8b100c5 1745 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1746 return IRQ_HANDLED;
1747}
1748
bea3348e 1749static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1750{
d8b100c5
DP		 1751 struct nx_host_sds_ring *sds_ring =
1752 container_of(napi, struct nx_host_sds_ring, napi);
1753
1754 struct netxen_adapter *adapter = sds_ring->adapter;
1755
05aaa02d 1756 int tx_complete;
bea3348e 1757 int work_done;
3d396eb1 1758
05aaa02d 1759 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1760
d8b100c5 1761 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 1762
05aaa02d 1763 if ((work_done < budget) && tx_complete) {
d8b100c5 1764 napi_complete(&sds_ring->napi);
b2af9cb0
DP		 1765 if (netif_running(adapter->netdev))
1766 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 1767 }
1768
bea3348e 1769 return work_done;
3d396eb1
AK		 1770}
1771
1772#ifdef CONFIG_NET_POLL_CONTROLLER
1773static void netxen_nic_poll_controller(struct net_device *netdev)
1774{
3176ff3e 1775 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1776 disable_irq(adapter->irq);
1494a814 1777 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1778 enable_irq(adapter->irq);
1779}
1780#endif
3d396eb1
AK		 1781
1782static struct pci_driver netxen_driver = {
1783 .name = netxen_nic_driver_name,
1784 .id_table = netxen_pci_tbl,
1785 .probe = netxen_nic_probe,
0b72e659 1786 .remove = __devexit_p(netxen_nic_remove),
01542cd1 1787#ifdef CONFIG_PM
0b72e659
DP		 1788 .suspend = netxen_nic_suspend,
1789 .resume = netxen_nic_resume
01542cd1 1790#endif
3d396eb1
AK		 1791};
1792
1793/* Driver Registration on NetXen card */
1794
1795static int __init netxen_init_module(void)
1796{
ff4fbd43
DP		 1797 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1798
79ea13ce 1799 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1800 return -ENOMEM;
1801
184231bd 1802 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1803}
1804
1805module_init(netxen_init_module);
1806
1807static void __exit netxen_exit_module(void)
1808{
3d396eb1 1809 pci_unregister_driver(&netxen_driver);
9de06610 1810 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1811}
1812
1813module_exit(netxen_exit_module);
Linux kernel - Deliverables
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