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netxen: fix tx timeout recovery
[mirror_ubuntu-focal-kernel.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
1494a814 37#include <linux/dma-mapping.h>
391587c3 38#include <linux/if_vlan.h>
c9bdd4b5 39#include <net/ip.h>
00977784 40#include <linux/ipv6.h>
6598b169 41#include <linux/inetdevice.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);
61357325
SH		 66static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
67 struct net_device *);
3d396eb1 68static void netxen_tx_timeout(struct net_device *netdev);
74c520da 69static void netxen_tx_timeout_task(struct work_struct *work);
6a581e93
DP		 70static void netxen_fw_poll_work(struct work_struct *work);
71static void netxen_schedule_work(struct netxen_adapter *adapter,
72 work_func_t func, int delay);
73static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
bea3348e 74static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 75#ifdef CONFIG_NET_POLL_CONTROLLER
76static void netxen_nic_poll_controller(struct net_device *netdev);
77#endif
fa3ce355
NK		 78
79static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
80static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
81
6a581e93
DP		 82static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
83static int netxen_can_start_firmware(struct netxen_adapter *adapter);
84
1494a814 85static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 86static irqreturn_t netxen_msi_intr(int irq, void *data);
b3df68f8 87static irqreturn_t netxen_msix_intr(int irq, void *data);
3d396eb1 88
d0725e4d
AKS		 89static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
90
3d396eb1 91/* PCI Device ID Table */
70081ac5 92#define ENTRY(device) \
040dec3b 93 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 94 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
95
3d396eb1 96static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 97 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
98 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
99 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
100 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
101 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
102 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
103 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
104 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 105 {0,}
106};
107
108MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
109
7830b22c
DP		 110static uint32_t crb_cmd_producer[4] = {
111 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
112 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
113};
114
c9fc891f 115void
3ce06a32 116netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
cb2107be 117 struct nx_host_tx_ring *tx_ring)
3176ff3e 118{
195c5f98 119 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
cb2107be
DP		 120
121 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
122 netif_stop_queue(adapter->netdev);
123 smp_mb();
124 }
3176ff3e
MT		 125}
126
7830b22c
DP		 127static uint32_t crb_cmd_consumer[4] = {
128 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
129 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
130};
131
3ce06a32
DP		 132static inline void
133netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
cb2107be 134 struct nx_host_tx_ring *tx_ring)
3176ff3e 135{
195c5f98 136 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
3176ff3e
MT		 137}
138
2956640d 139static uint32_t msi_tgt_status[8] = {
443be796 140 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 141 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
142 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
143 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 144};
145
2956640d
DP		 146static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
147
d8b100c5 148static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 149{
d8b100c5
DP		 150 struct netxen_adapter *adapter = sds_ring->adapter;
151
195c5f98 152 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 153}
154
d8b100c5 155static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 156{
d8b100c5
DP		 157 struct netxen_adapter *adapter = sds_ring->adapter;
158
195c5f98 159 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 160
092bc571 161 if (!NETXEN_IS_MSI_FAMILY(adapter))
195c5f98 162 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
4638aef1
SH		 163}
164
71dcddbd
DP		 165static int
166netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
167{
168 int size = sizeof(struct nx_host_sds_ring) * count;
169
170 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
171
172 return (recv_ctx->sds_rings == NULL);
173}
174
d8b100c5 175static void
71dcddbd
DP		 176netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
177{
178 if (recv_ctx->sds_rings != NULL)
179 kfree(recv_ctx->sds_rings);
232e7d68
DP		 180
181 recv_ctx->sds_rings = NULL;
71dcddbd
DP		 182}
183
184static int
d8b100c5
DP		 185netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
186{
187 int ring;
188 struct nx_host_sds_ring *sds_ring;
189 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
190
71dcddbd 191 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
f17443f4 192 return -ENOMEM;
71dcddbd 193
d8b100c5
DP		 194 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
195 sds_ring = &recv_ctx->sds_rings[ring];
196 netif_napi_add(netdev, &sds_ring->napi,
197 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
198 }
71dcddbd
DP		 199
200 return 0;
d8b100c5
DP		 201}
202
232e7d68
DP		 203static void
204netxen_napi_del(struct netxen_adapter *adapter)
205{
206 int ring;
207 struct nx_host_sds_ring *sds_ring;
208 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
209
210 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
211 sds_ring = &recv_ctx->sds_rings[ring];
212 netif_napi_del(&sds_ring->napi);
213 }
214
215 netxen_free_sds_rings(&adapter->recv_ctx);
216}
217
d8b100c5
DP		 218static void
219netxen_napi_enable(struct netxen_adapter *adapter)
220{
221 int ring;
222 struct nx_host_sds_ring *sds_ring;
223 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
224
225 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
226 sds_ring = &recv_ctx->sds_rings[ring];
227 napi_enable(&sds_ring->napi);
228 netxen_nic_enable_int(sds_ring);
229 }
230}
231
232static void
233netxen_napi_disable(struct netxen_adapter *adapter)
234{
235 int ring;
236 struct nx_host_sds_ring *sds_ring;
237 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
238
239 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
240 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 241 netxen_nic_disable_int(sds_ring);
b2af9cb0
DP		 242 napi_synchronize(&sds_ring->napi);
243 napi_disable(&sds_ring->napi);
d8b100c5
DP		 244 }
245}
246
50c643e7 247static int nx_set_dma_mask(struct netxen_adapter *adapter)
2956640d
DP		 248{
249 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 250 uint64_t mask, cmask;
251
252 adapter->pci_using_dac = 0;
2956640d 253
6afd142f 254 mask = DMA_BIT_MASK(32);
6afd142f 255 cmask = DMA_BIT_MASK(32);
1f434f63 256
50c643e7 257 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1f434f63 258#ifndef CONFIG_IA64
6afd142f 259 mask = DMA_BIT_MASK(35);
1f434f63 260#endif
50c643e7
DP		 261 } else {
262 mask = DMA_BIT_MASK(39);
263 cmask = mask;
264 }
265
2956640d 266 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 267 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 268 adapter->pci_using_dac = 1;
269 return 0;
270 }
2956640d 271
1f434f63
DP		 272 return -EIO;
273}
274
275/* Update addressable range if firmware supports it */
276static int
277nx_update_dma_mask(struct netxen_adapter *adapter)
278{
279 int change, shift, err;
50c643e7 280 uint64_t mask, old_mask, old_cmask;
1f434f63
DP		 281 struct pci_dev *pdev = adapter->pdev;
282
283 change = 0;
284
f98a9f69 285 shift = NXRD32(adapter, CRB_DMA_SHIFT);
f60f7856 286 if (shift > 32)
1f434f63
DP		 287 return 0;
288
289 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
290 change = 1;
291 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
292 change = 1;
293
294 if (change) {
295 old_mask = pdev->dma_mask;
50c643e7
DP		 296 old_cmask = pdev->dev.coherent_dma_mask;
297
f60f7856 298 mask = DMA_BIT_MASK(32+shift);
1f434f63
DP		 299
300 err = pci_set_dma_mask(pdev, mask);
301 if (err)
50c643e7
DP		 302 goto err_out;
303
304 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
305
306 err = pci_set_consistent_dma_mask(pdev, mask);
307 if (err)
308 goto err_out;
309 }
310 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
2956640d
DP		 311 }
312
2956640d 313 return 0;
50c643e7
DP		 314
315err_out:
316 pci_set_dma_mask(pdev, old_mask);
317 pci_set_consistent_dma_mask(pdev, old_cmask);
318 return err;
2956640d
DP		 319}
320
2956640d
DP		 321static int
322netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
323{
27c915a4 324 u32 val, timeout;
2956640d
DP		 325
326 if (first_boot == 0x55555555) {
327 /* This is the first boot after power up */
f98a9f69 328 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 329
330 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
331 return 0;
2956640d
DP		 332
333 /* PCI bus master workaround */
f98a9f69 334 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 335 if (!(first_boot & 0x4)) {
336 first_boot |= 0x4;
f98a9f69
DP		 337 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
338 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 339 }
340
341 /* This is the first boot after power up */
f98a9f69 342 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 343 if (first_boot != 0x80000f) {
344 /* clear the register for future unloads/loads */
f98a9f69 345 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 346 return -EIO;
2956640d
DP		 347 }
348
27c915a4 349 /* Start P2 boot loader */
f98a9f69
DP		 350 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
351 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 352 timeout = 0;
353 do {
354 msleep(1);
f98a9f69 355 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 356
357 if (++timeout > 5000)
358 return -EIO;
359
360 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 361 }
27c915a4 362 return 0;
2956640d
DP		 363}
364
365static void netxen_set_port_mode(struct netxen_adapter *adapter)
366{
367 u32 val, data;
368
1e2d0059 369 val = adapter->ahw.board_type;
2956640d
DP		 370 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
371 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
372 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
373 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 374 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 375 } else if (port_mode == NETXEN_PORT_MODE_XG) {
376 data = NETXEN_PORT_MODE_XG;
f98a9f69 377 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 378 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
379 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 380 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 381 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
382 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 383 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 384 } else {
385 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 386 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 387 }
388
389 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
390 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
391 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
392 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
393 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
394 }
f98a9f69 395 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 396 }
397}
398
2956640d
DP		 399static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
400{
401 u32 control;
402 int pos;
403
404 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
405 if (pos) {
406 pci_read_config_dword(pdev, pos, &control);
407 if (enable)
408 control |= PCI_MSIX_FLAGS_ENABLE;
409 else
410 control = 0;
411 pci_write_config_dword(pdev, pos, control);
412 }
413}
414
be339aee 415static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 416{
417 int i;
418
be339aee 419 for (i = 0; i < count; i++)
2956640d
DP		 420 adapter->msix_entries[i].entry = i;
421}
422
9dc28efe
DP		 423static int
424netxen_read_mac_addr(struct netxen_adapter *adapter)
425{
426 int i;
427 unsigned char *p;
428 __le64 mac_addr;
9dc28efe
DP		 429 struct net_device *netdev = adapter->netdev;
430 struct pci_dev *pdev = adapter->pdev;
431
9dc28efe
DP		 432 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
433 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
434 return -EIO;
435 } else {
436 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
437 return -EIO;
438 }
439
440 p = (unsigned char *)&mac_addr;
441 for (i = 0; i < 6; i++)
442 netdev->dev_addr[i] = *(p + 5 - i);
443
444 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
445
446 /* set station address */
447
e174961c
JB		 448 if (!is_valid_ether_addr(netdev->perm_addr))
449 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 450
451 return 0;
452}
453
3d0a3cc9
DP		 454int netxen_nic_set_mac(struct net_device *netdev, void *p)
455{
456 struct netxen_adapter *adapter = netdev_priv(netdev);
457 struct sockaddr *addr = p;
458
459 if (!is_valid_ether_addr(addr->sa_data))
460 return -EINVAL;
461
462 if (netif_running(netdev)) {
463 netif_device_detach(netdev);
464 netxen_napi_disable(adapter);
465 }
466
467 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
468 adapter->macaddr_set(adapter, addr->sa_data);
469
470 if (netif_running(netdev)) {
471 netif_device_attach(netdev);
472 netxen_napi_enable(adapter);
473 }
474 return 0;
475}
476
1abd266f
SH		 477static void netxen_set_multicast_list(struct net_device *dev)
478{
479 struct netxen_adapter *adapter = netdev_priv(dev);
480
3d0a3cc9 481 adapter->set_multi(dev);
1abd266f
SH		 482}
483
484static const struct net_device_ops netxen_netdev_ops = {
485 .ndo_open = netxen_nic_open,
486 .ndo_stop = netxen_nic_close,
487 .ndo_start_xmit = netxen_nic_xmit_frame,
488 .ndo_get_stats = netxen_nic_get_stats,
489 .ndo_validate_addr = eth_validate_addr,
490 .ndo_set_multicast_list = netxen_set_multicast_list,
491 .ndo_set_mac_address = netxen_nic_set_mac,
492 .ndo_change_mtu = netxen_nic_change_mtu,
493 .ndo_tx_timeout = netxen_tx_timeout,
494#ifdef CONFIG_NET_POLL_CONTROLLER
495 .ndo_poll_controller = netxen_nic_poll_controller,
496#endif
497};
498
97daee83
DP		 499static void
500netxen_setup_intr(struct netxen_adapter *adapter)
501{
502 struct netxen_legacy_intr_set *legacy_intrp;
503 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 504 int err, num_msix;
505
506 if (adapter->rss_supported) {
507 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
508 MSIX_ENTRIES_PER_ADAPTER : 2;
509 } else
510 num_msix = 1;
511
512 adapter->max_sds_rings = 1;
97daee83
DP		 513
514 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 515
516 if (adapter->ahw.revision_id >= NX_P3_B0)
517 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
518 else
519 legacy_intrp = &legacy_intr[0];
195c5f98
AKS		 520
521 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
522 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
523 legacy_intrp->tgt_status_reg);
524 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
525 legacy_intrp->tgt_mask_reg);
526 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
527 legacy_intrp->pci_int_reg);
528 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
529
530 if (adapter->ahw.revision_id >= NX_P3_B1)
531 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
532 ISR_INT_STATE_REG);
533 else
534 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
535 CRB_INT_VECTOR);
97daee83
DP		 536
537 netxen_set_msix_bit(pdev, 0);
538
539 if (adapter->msix_supported) {
540
be339aee
DP		 541 netxen_init_msix_entries(adapter, num_msix);
542 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
543 if (err == 0) {
544 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
545 netxen_set_msix_bit(pdev, 1);
97daee83 546
be339aee
DP		 547 if (adapter->rss_supported)
548 adapter->max_sds_rings = num_msix;
97daee83 549
be339aee
DP		 550 dev_info(&pdev->dev, "using msi-x interrupts\n");
551 return;
552 }
553
554 if (err > 0)
555 pci_disable_msix(pdev);
556
557 /* fall through for msi */
97daee83 558 }
be339aee
DP		 559
560 if (use_msi && !pci_enable_msi(pdev)) {
561 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
195c5f98
AKS		 562 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
563 msi_tgt_status[adapter->ahw.pci_func]);
be339aee 564 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 565 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 566 return;
567 }
568
569 dev_info(&pdev->dev, "using legacy interrupts\n");
570 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 571}
572
573static void
574netxen_teardown_intr(struct netxen_adapter *adapter)
575{
576 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
577 pci_disable_msix(adapter->pdev);
578 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
579 pci_disable_msi(adapter->pdev);
580}
581
582static void
583netxen_cleanup_pci_map(struct netxen_adapter *adapter)
584{
585 if (adapter->ahw.db_base != NULL)
586 iounmap(adapter->ahw.db_base);
587 if (adapter->ahw.pci_base0 != NULL)
588 iounmap(adapter->ahw.pci_base0);
589 if (adapter->ahw.pci_base1 != NULL)
590 iounmap(adapter->ahw.pci_base1);
591 if (adapter->ahw.pci_base2 != NULL)
592 iounmap(adapter->ahw.pci_base2);
593}
594
595static int
596netxen_setup_pci_map(struct netxen_adapter *adapter)
597{
598 void __iomem *mem_ptr0 = NULL;
599 void __iomem *mem_ptr1 = NULL;
600 void __iomem *mem_ptr2 = NULL;
601 void __iomem *db_ptr = NULL;
602
97daee83
DP		 603 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
604
605 struct pci_dev *pdev = adapter->pdev;
606 int pci_func = adapter->ahw.pci_func;
607
608 int err = 0;
609
610 /*
611 * Set the CRB window to invalid. If any register in window 0 is
612 * accessed it should set the window to 0 and then reset it to 1.
613 */
614 adapter->curr_window = 255;
615 adapter->ahw.qdr_sn_window = -1;
616 adapter->ahw.ddr_mn_window = -1;
617
618 /* remap phys address */
619 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
620 mem_len = pci_resource_len(pdev, 0);
621 pci_len0 = 0;
622
97daee83
DP		 623 /* 128 Meg of memory */
624 if (mem_len == NETXEN_PCI_128MB_SIZE) {
625 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
626 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
627 SECOND_PAGE_GROUP_SIZE);
628 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
629 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 630 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
631 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
632 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
633 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83 634 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
97daee83
DP		 635
636 mem_ptr0 = pci_ioremap_bar(pdev, 0);
637 if (mem_ptr0 == NULL) {
638 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
639 return -EIO;
640 }
641 pci_len0 = mem_len;
97daee83
DP		 642
643 adapter->ahw.ddr_mn_window = 0;
644 adapter->ahw.qdr_sn_window = 0;
645
ea6828b8
DP		 646 adapter->ahw.mn_win_crb = NETXEN_PCI_CRBSPACE +
647 0x100000 + PCIX_MN_WINDOW + (pci_func * 0x20);
648 adapter->ahw.ms_win_crb = NETXEN_PCI_CRBSPACE +
649 0x100000 + PCIX_SN_WINDOW;
97daee83
DP		 650 if (pci_func < 4)
651 adapter->ahw.ms_win_crb += (pci_func * 0x20);
652 else
653 adapter->ahw.ms_win_crb +=
654 0xA0 + ((pci_func - 4) * 0x10);
655 } else {
656 return -EIO;
657 }
658
195c5f98
AKS		 659 netxen_setup_hwops(adapter);
660
97daee83
DP		 661 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
662
663 adapter->ahw.pci_base0 = mem_ptr0;
664 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 665 adapter->ahw.pci_base1 = mem_ptr1;
666 adapter->ahw.pci_base2 = mem_ptr2;
667
668 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
669 goto skip_doorbell;
670
671 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
672 db_len = pci_resource_len(pdev, 4);
673
674 if (db_len == 0) {
675 printk(KERN_ERR "%s: doorbell is disabled\n",
676 netxen_nic_driver_name);
677 err = -EIO;
678 goto err_out;
679 }
680
681 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
682 if (!db_ptr) {
683 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
684 netxen_nic_driver_name);
685 err = -EIO;
686 goto err_out;
687 }
688
689skip_doorbell:
690 adapter->ahw.db_base = db_ptr;
691 adapter->ahw.db_len = db_len;
692 return 0;
693
694err_out:
695 netxen_cleanup_pci_map(adapter);
696 return err;
697}
698
2b9e62ee
DP		 699static void
700netxen_check_options(struct netxen_adapter *adapter)
701{
702 u32 fw_major, fw_minor, fw_build;
703 char brd_name[NETXEN_MAX_SHORT_NAME];
704 char serial_num[32];
705 int i, offset, val;
706 int *ptr32;
707 struct pci_dev *pdev = adapter->pdev;
708
709 adapter->driver_mismatch = 0;
710
711 ptr32 = (int *)&serial_num;
712 offset = NX_FW_SERIAL_NUM_OFFSET;
713 for (i = 0; i < 8; i++) {
714 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
715 dev_err(&pdev->dev, "error reading board info\n");
716 adapter->driver_mismatch = 1;
717 return;
718 }
719 ptr32[i] = cpu_to_le32(val);
720 offset += sizeof(u32);
721 }
722
723 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
724 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
725 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
726
727 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
728
729 if (adapter->portnum == 0) {
730 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
731
732 printk(KERN_INFO "NetXen %s Board S/N %s Chip rev 0x%x\n",
733 brd_name, serial_num, adapter->ahw.revision_id);
734 }
735
736 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
737 adapter->driver_mismatch = 1;
738 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
739 fw_major, fw_minor, fw_build);
740 return;
741 }
742
743 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
744 i = NXRD32(adapter, NETXEN_SRE_MISC);
745 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
746 }
747
748 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
749 fw_major, fw_minor, fw_build,
750 adapter->ahw.cut_through ? "cut-through" : "legacy");
751
752 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
753 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
754
755 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
756
757 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
758 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
759 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
760 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
761 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
762 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
763 }
764
765 adapter->msix_supported = 0;
766 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
767 adapter->msix_supported = !!use_msi_x;
768 adapter->rss_supported = !!use_msi_x;
769 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
770 switch (adapter->ahw.board_type) {
771 case NETXEN_BRDTYPE_P2_SB31_10G:
772 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
773 adapter->msix_supported = !!use_msi_x;
774 adapter->rss_supported = !!use_msi_x;
775 break;
776 default:
777 break;
778 }
779 }
780
781 adapter->num_txd = MAX_CMD_DESCRIPTORS;
782
783 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
784 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
785 adapter->max_rds_rings = 3;
786 } else {
787 adapter->num_lro_rxd = 0;
788 adapter->max_rds_rings = 2;
789 }
790}
791
ba599d4f 792static int
6a581e93 793netxen_start_firmware(struct netxen_adapter *adapter)
ba599d4f
DP		 794{
795 int val, err, first_boot;
796 struct pci_dev *pdev = adapter->pdev;
797
2b9e62ee
DP		 798 /* required for NX2031 dummy dma */
799 err = nx_set_dma_mask(adapter);
800 if (err)
801 return err;
802
6a581e93 803 if (!netxen_can_start_firmware(adapter))
96f2ebd2 804 goto wait_init;
0b72e659 805
f98a9f69 806 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 807
808 err = netxen_check_hw_init(adapter, first_boot);
809 if (err) {
810 dev_err(&pdev->dev, "error in init HW init sequence\n");
811 return err;
812 }
813
6a581e93 814 netxen_request_firmware(adapter);
f7185c71 815
67c38fc6 816 err = netxen_need_fw_reset(adapter);
1dbc84a7 817 if (err < 0)
db4cfd8a 818 goto err_out;
1dbc84a7 819 if (err == 0)
ec5c50cb 820 goto ready;
67c38fc6 821
ba599d4f 822 if (first_boot != 0x55555555) {
f98a9f69 823 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
ba599d4f
DP		 824 netxen_pinit_from_rom(adapter, 0);
825 msleep(1);
826 }
567c6c4e 827
f98a9f69 828 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
6a581e93
DP		 829 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
830 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
831
567c6c4e
DP		 832 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
833 netxen_set_port_mode(adapter);
834
db4cfd8a
DP		 835 err = netxen_load_firmware(adapter);
836 if (err)
837 goto err_out;
ba599d4f 838
6a581e93
DP		 839 netxen_release_firmware(adapter);
840
ba599d4f
DP		 841 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
842
843 /* Initialize multicast addr pool owners */
844 val = 0x7654;
1e2d0059 845 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 846 val |= 0x0f000000;
f98a9f69 847 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 848
849 }
850
83ac51fa 851 err = netxen_init_dummy_dma(adapter);
ba599d4f 852 if (err)
db4cfd8a 853 goto err_out;
ba599d4f
DP		 854
855 /*
856 * Tell the hardware our version number.
857 */
858 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
859 | ((_NETXEN_NIC_LINUX_MINOR << 8))
860 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 861 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 862
ec5c50cb 863ready:
6a581e93
DP		 864 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
865
96f2ebd2 866wait_init:
ba599d4f
DP		 867 /* Handshake with the card before we register the devices. */
868 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
869 if (err) {
83ac51fa 870 netxen_free_dummy_dma(adapter);
db4cfd8a 871 goto err_out;
ba599d4f
DP		 872 }
873
68b3cae0
DP		 874 nx_update_dma_mask(adapter);
875
6a581e93 876 netxen_check_options(adapter);
68b3cae0 877
74c520da
AKS		 878 adapter->need_fw_reset = 0;
879
ec5c50cb 880 /* fall through and release firmware */
db4cfd8a
DP		 881
882err_out:
883 netxen_release_firmware(adapter);
884 return err;
ba599d4f
DP		 885}
886
9f5bc7f1
DP		 887static int
888netxen_nic_request_irq(struct netxen_adapter *adapter)
889{
890 irq_handler_t handler;
d8b100c5
DP		 891 struct nx_host_sds_ring *sds_ring;
892 int err, ring;
893
9f5bc7f1
DP		 894 unsigned long flags = IRQF_SAMPLE_RANDOM;
895 struct net_device *netdev = adapter->netdev;
d8b100c5 896 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 897
9f5bc7f1
DP		 898 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
899 handler = netxen_msix_intr;
900 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
901 handler = netxen_msi_intr;
902 else {
903 flags |= IRQF_SHARED;
904 handler = netxen_intr;
905 }
906 adapter->irq = netdev->irq;
907
d8b100c5
DP		 908 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
909 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 910 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 911 err = request_irq(sds_ring->irq, handler,
912 flags, sds_ring->name, sds_ring);
913 if (err)
914 return err;
915 }
916
917 return 0;
918}
919
920static void
921netxen_nic_free_irq(struct netxen_adapter *adapter)
922{
923 int ring;
924 struct nx_host_sds_ring *sds_ring;
925
926 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
927
928 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
929 sds_ring = &recv_ctx->sds_rings[ring];
930 free_irq(sds_ring->irq, sds_ring);
931 }
9f5bc7f1
DP		 932}
933
ca2ef330
DP		 934static void
935netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
936{
937 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
938 adapter->coal.normal.data.rx_time_us =
939 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
940 adapter->coal.normal.data.rx_packets =
941 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
942 adapter->coal.normal.data.tx_time_us =
943 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
944 adapter->coal.normal.data.tx_packets =
945 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
946}
947
9f5bc7f1
DP		 948static int
949netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
950{
951 int err;
952
db4cfd8a
DP		 953 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
954 return -EIO;
955
9f5bc7f1
DP		 956 err = adapter->init_port(adapter, adapter->physical_port);
957 if (err) {
958 printk(KERN_ERR "%s: Failed to initialize port %d\n",
959 netxen_nic_driver_name, adapter->portnum);
960 return err;
961 }
3d0a3cc9
DP		 962 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
963 adapter->macaddr_set(adapter, netdev->dev_addr);
9f5bc7f1 964
3d0a3cc9
DP		 965 adapter->set_multi(netdev);
966 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 967
968 adapter->ahw.linkup = 0;
9f5bc7f1 969
d8b100c5
DP		 970 if (adapter->max_sds_rings > 1)
971 netxen_config_rss(adapter, 1);
9f5bc7f1 972
ca2ef330
DP		 973 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
974 netxen_config_intr_coalesce(adapter);
975
1bb482f8
NK		 976 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
977 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
978
b2af9cb0
DP		 979 netxen_napi_enable(adapter);
980
5103c9f7 981 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 982 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 983 else
984 netxen_nic_set_link_parameters(adapter);
985
6a581e93 986 set_bit(__NX_DEV_UP, &adapter->state);
9f5bc7f1
DP		 987 return 0;
988}
989
990static void
991netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
992{
db4cfd8a
DP		 993 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
994 return;
995
6a581e93
DP		 996 clear_bit(__NX_DEV_UP, &adapter->state);
997
b2af9cb0 998 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 999 netif_carrier_off(netdev);
b2af9cb0 1000 netif_tx_disable(netdev);
9f5bc7f1
DP		 1001
1002 if (adapter->stop_port)
1003 adapter->stop_port(adapter);
1004
5cf4d323
DP		 1005 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1006 netxen_p3_free_mac_list(adapter);
1007
22b5794b
AKS		 1008 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1009
be339aee
DP		 1010 netxen_napi_disable(adapter);
1011
9f5bc7f1 1012 netxen_release_tx_buffers(adapter);
b2af9cb0 1013 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1
DP		 1014}
1015
1016
1017static int
1018netxen_nic_attach(struct netxen_adapter *adapter)
1019{
1020 struct net_device *netdev = adapter->netdev;
1021 struct pci_dev *pdev = adapter->pdev;
becf46a0 1022 int err, ring;
d8b100c5 1023 struct nx_host_rds_ring *rds_ring;
d877f1e3 1024 struct nx_host_tx_ring *tx_ring;
9f5bc7f1 1025
7042cd8f
AKS		 1026 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1027 return 0;
1028
9f5bc7f1 1029 err = netxen_init_firmware(adapter);
232e7d68
DP		 1030 if (err)
1031 return err;
1032
1033 err = netxen_napi_add(adapter, netdev);
1034 if (err)
1035 return err;
9f5bc7f1 1036
9f5bc7f1
DP		 1037 err = netxen_alloc_sw_resources(adapter);
1038 if (err) {
1039 printk(KERN_ERR "%s: Error in setting sw resources\n",
1040 netdev->name);
1041 return err;
1042 }
1043
9f5bc7f1
DP		 1044 err = netxen_alloc_hw_resources(adapter);
1045 if (err) {
1046 printk(KERN_ERR "%s: Error in setting hw resources\n",
1047 netdev->name);
1048 goto err_out_free_sw;
1049 }
1050
4f96b988 1051 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
4ea528a1 1052 tx_ring = adapter->tx_ring;
195c5f98
AKS		 1053 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1054 crb_cmd_producer[adapter->portnum]);
1055 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1056 crb_cmd_consumer[adapter->portnum]);
9f5bc7f1 1057
cb2107be
DP		 1058 tx_ring->producer = 0;
1059 tx_ring->sw_consumer = 0;
1060
1061 netxen_nic_update_cmd_producer(adapter, tx_ring);
1062 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 1063 }
1064
d8b100c5
DP		 1065 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1066 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1067 netxen_post_rx_buffers(adapter, ring, rds_ring);
1068 }
9f5bc7f1
DP		 1069
1070 err = netxen_nic_request_irq(adapter);
1071 if (err) {
1072 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1073 netdev->name);
1074 goto err_out_free_rxbuf;
1075 }
1076
ca2ef330
DP		 1077 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1078 netxen_nic_init_coalesce_defaults(adapter);
1079
fa3ce355
NK		 1080 netxen_create_sysfs_entries(adapter);
1081
9f5bc7f1
DP		 1082 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1083 return 0;
1084
1085err_out_free_rxbuf:
1086 netxen_release_rx_buffers(adapter);
1087 netxen_free_hw_resources(adapter);
1088err_out_free_sw:
1089 netxen_free_sw_resources(adapter);
1090 return err;
1091}
1092
1093static void
1094netxen_nic_detach(struct netxen_adapter *adapter)
1095{
7042cd8f
AKS		 1096 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1097 return;
1098
fa3ce355
NK		 1099 netxen_remove_sysfs_entries(adapter);
1100
9f5bc7f1 1101 netxen_free_hw_resources(adapter);
cf981ffb 1102 netxen_release_rx_buffers(adapter);
be339aee 1103 netxen_nic_free_irq(adapter);
232e7d68 1104 netxen_napi_del(adapter);
9f5bc7f1
DP		 1105 netxen_free_sw_resources(adapter);
1106
1107 adapter->is_up = 0;
1108}
1109
7042cd8f
AKS		 1110int
1111netxen_nic_reset_context(struct netxen_adapter *adapter)
1112{
1113 int err = 0;
1114 struct net_device *netdev = adapter->netdev;
1115
6a581e93
DP		 1116 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1117 return -EBUSY;
1118
7042cd8f
AKS		 1119 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1120
6a581e93
DP		 1121 netif_device_detach(netdev);
1122
7042cd8f
AKS		 1123 if (netif_running(netdev))
1124 netxen_nic_down(adapter, netdev);
1125
1126 netxen_nic_detach(adapter);
1127
6a581e93
DP		 1128 if (netif_running(netdev)) {
1129 err = netxen_nic_attach(adapter);
1130 if (!err)
1131 err = netxen_nic_up(adapter, netdev);
7042cd8f 1132
6a581e93
DP		 1133 if (err)
1134 goto done;
1135 }
1136
1137 netif_device_attach(netdev);
7042cd8f 1138 }
6a581e93 1139
7042cd8f 1140done:
6a581e93 1141 clear_bit(__NX_RESETTING, &adapter->state);
7042cd8f
AKS		 1142 return err;
1143}
1144
f17443f4
DP		 1145static int
1146netxen_setup_netdev(struct netxen_adapter *adapter,
1147 struct net_device *netdev)
1148{
1149 int err = 0;
1150 struct pci_dev *pdev = adapter->pdev;
1151
1152 adapter->rx_csum = 1;
1153 adapter->mc_enabled = 0;
1154 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1155 adapter->max_mc_count = 38;
1156 else
1157 adapter->max_mc_count = 16;
1158
1159 netdev->netdev_ops = &netxen_netdev_ops;
1160 netdev->watchdog_timeo = 2*HZ;
1161
1162 netxen_nic_change_mtu(netdev, netdev->mtu);
1163
1164 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1165
1166 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1167 netdev->features |= (NETIF_F_GRO);
1168 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1169
1170 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1171 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1172 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1173 }
1174
1175 if (adapter->pci_using_dac) {
1176 netdev->features |= NETIF_F_HIGHDMA;
1177 netdev->vlan_features |= NETIF_F_HIGHDMA;
1178 }
1179
028afe71
DP		 1180 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1181 netdev->features |= (NETIF_F_HW_VLAN_TX);
1182
1bb482f8
NK		 1183 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1184 netdev->features |= NETIF_F_LRO;
1185
f17443f4
DP		 1186 netdev->irq = adapter->msix_entries[0].vector;
1187
74c520da 1188 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
f17443f4
DP		 1189
1190 if (netxen_read_mac_addr(adapter))
1191 dev_warn(&pdev->dev, "failed to read mac addr\n");
1192
1193 netif_carrier_off(netdev);
1194 netif_stop_queue(netdev);
1195
1196 err = register_netdev(netdev);
1197 if (err) {
1198 dev_err(&pdev->dev, "failed to register net device\n");
1199 return err;
1200 }
1201
1202 return 0;
1203}
1204
3d396eb1
AK		 1205static int __devinit
1206netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1207{
1208 struct net_device *netdev = NULL;
1209 struct netxen_adapter *adapter = NULL;
2956640d 1210 int i = 0, err;
3176ff3e 1211 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 1212 uint8_t revision_id;
3d396eb1 1213
3176ff3e 1214 if (pdev->class != 0x020000) {
dcd56fdb 1215 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 1216 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 1217 return -ENODEV;
1218 }
2956640d 1219
11d89d63
DP		 1220 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1221 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1222 "will not be enabled.\n",
1223 NX_P3_A0, NX_P3_B1);
1224 return -ENODEV;
1225 }
1226
3d396eb1
AK		 1227 if ((err = pci_enable_device(pdev)))
1228 return err;
2956640d 1229
3d396eb1
AK		 1230 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1231 err = -ENODEV;
1232 goto err_out_disable_pdev;
1233 }
1234
1235 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1236 goto err_out_disable_pdev;
1237
1238 pci_set_master(pdev);
3176ff3e
MT		 1239
1240 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1241 if(!netdev) {
f17443f4
DP		 1242 dev_err(&pdev->dev, "failed to allocate net_device\n");
1243 err = -ENOMEM;
3176ff3e
MT		 1244 goto err_out_free_res;
1245 }
1246
3176ff3e
MT		 1247 SET_NETDEV_DEV(netdev, &pdev->dev);
1248
4cf1653a 1249 adapter = netdev_priv(netdev);
2956640d
DP		 1250 adapter->netdev = netdev;
1251 adapter->pdev = pdev;
13ba9c77 1252 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1253
1254 revision_id = pdev->revision;
1255 adapter->ahw.revision_id = revision_id;
1256
3ce06a32 1257 rwlock_init(&adapter->adapter_lock);
d8b100c5 1258 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1259 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1260
97daee83
DP		 1261 err = netxen_setup_pci_map(adapter);
1262 if (err)
6c80b18d 1263 goto err_out_free_netdev;
3d396eb1 1264
2d1a3bbd 1265 /* This will be reset for mezz cards */
3176ff3e 1266 adapter->portnum = pci_func_id;
3176ff3e 1267
f17443f4
DP		 1268 err = netxen_nic_get_board_info(adapter);
1269 if (err) {
1270 dev_err(&pdev->dev, "Error getting board config info.\n");
dcd56fdb
DP		 1271 goto err_out_iounmap;
1272 }
6c80b18d 1273
13ba9c77 1274 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1275 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1276 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1277 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1278 if (pci_func_id >= 2)
13ba9c77 1279 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1280 break;
1281 default:
1282 break;
1283 }
13ba9c77 1284
6a581e93 1285 err = netxen_start_firmware(adapter);
0b72e659
DP		 1286 if (err)
1287 goto err_out_iounmap;
f17443f4 1288
3d396eb1 1289 /*
6c80b18d 1290 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1291 */
dcd56fdb 1292 adapter->physical_port = adapter->portnum;
4f96b988 1293 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
f98a9f69 1294 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1295 if (i != 0x55555555)
1296 adapter->physical_port = i;
1297 }
6c80b18d 1298
6a581e93 1299 netxen_nic_clear_stats(adapter);
2956640d 1300
97daee83 1301 netxen_setup_intr(adapter);
2956640d 1302
f17443f4 1303 err = netxen_setup_netdev(adapter, netdev);
9dc28efe 1304 if (err)
2956640d 1305 goto err_out_disable_msi;
6c80b18d
MT		 1306
1307 pci_set_drvdata(pdev, adapter);
3d396eb1 1308
6a581e93
DP		 1309 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1310
1e2d0059 1311 switch (adapter->ahw.port_type) {
2956640d
DP		 1312 case NETXEN_NIC_GBE:
1313 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1314 adapter->netdev->name);
1315 break;
1316 case NETXEN_NIC_XGBE:
1317 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1318 adapter->netdev->name);
1319 break;
3d396eb1 1320 }
3d396eb1 1321
2956640d
DP		 1322 return 0;
1323
1324err_out_disable_msi:
97daee83 1325 netxen_teardown_intr(adapter);
6c80b18d 1326
83ac51fa 1327 netxen_free_dummy_dma(adapter);
3d396eb1 1328
6a581e93
DP		 1329 nx_decr_dev_ref_cnt(adapter);
1330
2956640d 1331err_out_iounmap:
97daee83 1332 netxen_cleanup_pci_map(adapter);
cb8011ad 1333
6c80b18d
MT		 1334err_out_free_netdev:
1335 free_netdev(netdev);
1336
1337err_out_free_res:
3d396eb1 1338 pci_release_regions(pdev);
6c80b18d
MT		 1339
1340err_out_disable_pdev:
2956640d 1341 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1342 pci_disable_device(pdev);
1343 return err;
1344}
1345
1346static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1347{
1348 struct netxen_adapter *adapter;
3176ff3e 1349 struct net_device *netdev;
3d396eb1 1350
6c80b18d 1351 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1352 if (adapter == NULL)
1353 return;
1354
6c80b18d
MT		 1355 netdev = adapter->netdev;
1356
6a581e93
DP		 1357 netxen_cancel_fw_work(adapter);
1358
96acb6eb
DP		 1359 unregister_netdev(netdev);
1360
e424fa9d
AKS		 1361 cancel_work_sync(&adapter->tx_timeout_task);
1362
7042cd8f 1363 netxen_nic_detach(adapter);
3d396eb1 1364
6a581e93
DP		 1365 nx_decr_dev_ref_cnt(adapter);
1366
439b454e 1367 if (adapter->portnum == 0)
83ac51fa 1368 netxen_free_dummy_dma(adapter);
96acb6eb 1369
6a581e93
DP		 1370 clear_bit(__NX_RESETTING, &adapter->state);
1371
97daee83 1372 netxen_teardown_intr(adapter);
3052246c 1373
97daee83 1374 netxen_cleanup_pci_map(adapter);
595e3fb8 1375
f7185c71
DP		 1376 netxen_release_firmware(adapter);
1377
595e3fb8 1378 pci_release_regions(pdev);
3052246c 1379 pci_disable_device(pdev);
595e3fb8
MT		 1380 pci_set_drvdata(pdev, NULL);
1381
6c80b18d 1382 free_netdev(netdev);
3d396eb1 1383}
22b5794b 1384static int __netxen_nic_shutdown(struct pci_dev *pdev)
0b72e659 1385{
0b72e659
DP		 1386 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1387 struct net_device *netdev = adapter->netdev;
22b5794b 1388 int retval;
0b72e659
DP		 1389
1390 netif_device_detach(netdev);
1391
6a581e93
DP		 1392 netxen_cancel_fw_work(adapter);
1393
0b72e659
DP		 1394 if (netif_running(netdev))
1395 netxen_nic_down(adapter, netdev);
1396
e424fa9d
AKS		 1397 cancel_work_sync(&adapter->tx_timeout_task);
1398
7042cd8f 1399 netxen_nic_detach(adapter);
0b72e659 1400
22b5794b
AKS		 1401 if (adapter->portnum == 0)
1402 netxen_free_dummy_dma(adapter);
1403
6a581e93
DP		 1404 nx_decr_dev_ref_cnt(adapter);
1405
1406 clear_bit(__NX_RESETTING, &adapter->state);
1407
22b5794b
AKS		 1408 retval = pci_save_state(pdev);
1409 if (retval)
1410 return retval;
0b72e659
DP		 1411
1412 if (netxen_nic_wol_supported(adapter)) {
1413 pci_enable_wake(pdev, PCI_D3cold, 1);
1414 pci_enable_wake(pdev, PCI_D3hot, 1);
1415 }
1416
1417 pci_disable_device(pdev);
0b72e659
DP		 1418
1419 return 0;
1420}
22b5794b
AKS		 1421static void netxen_nic_shutdown(struct pci_dev *pdev)
1422{
1423 if (__netxen_nic_shutdown(pdev))
1424 return;
1425}
1426#ifdef CONFIG_PM
1427static int
1428netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1429{
1430 int retval;
1431
1432 retval = __netxen_nic_shutdown(pdev);
1433 if (retval)
1434 return retval;
1435
1436 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1437 return 0;
1438}
0b72e659
DP		 1439
1440static int
1441netxen_nic_resume(struct pci_dev *pdev)
1442{
1443 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1444 struct net_device *netdev = adapter->netdev;
1445 int err;
1446
1447 pci_set_power_state(pdev, PCI_D0);
1448 pci_restore_state(pdev);
1449
1450 err = pci_enable_device(pdev);
1451 if (err)
1452 return err;
1453
1454 adapter->curr_window = 255;
1455
6a581e93 1456 err = netxen_start_firmware(adapter);
0b72e659
DP		 1457 if (err) {
1458 dev_err(&pdev->dev, "failed to start firmware\n");
1459 return err;
1460 }
1461
1462 if (netif_running(netdev)) {
1463 err = netxen_nic_attach(adapter);
1464 if (err)
6a581e93 1465 goto err_out;
0b72e659
DP		 1466
1467 err = netxen_nic_up(adapter, netdev);
1468 if (err)
6a581e93 1469 goto err_out_detach;
0b72e659
DP		 1470
1471 netif_device_attach(netdev);
d0725e4d
AKS		 1472
1473 netxen_config_indev_addr(netdev, NETDEV_UP);
0b72e659
DP		 1474 }
1475
6a581e93
DP		 1476 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1477
1478err_out_detach:
1479 netxen_nic_detach(adapter);
1480err_out:
1481 nx_decr_dev_ref_cnt(adapter);
1482 return err;
0b72e659 1483}
01542cd1 1484#endif
0b72e659 1485
3d396eb1
AK		 1486static int netxen_nic_open(struct net_device *netdev)
1487{
4cf1653a 1488 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1489 int err = 0;
3d396eb1 1490
dcd56fdb
DP		 1491 if (adapter->driver_mismatch)
1492 return -EIO;
1493
7042cd8f
AKS		 1494 err = netxen_nic_attach(adapter);
1495 if (err)
1496 return err;
2956640d 1497
9f5bc7f1
DP		 1498 err = netxen_nic_up(adapter, netdev);
1499 if (err)
1500 goto err_out;
05aaa02d 1501
dcd56fdb 1502 netif_start_queue(netdev);
3d396eb1
AK		 1503
1504 return 0;
2956640d 1505
9f5bc7f1
DP		 1506err_out:
1507 netxen_nic_detach(adapter);
2956640d 1508 return err;
3d396eb1
AK		 1509}
1510
1511/*
1512 * netxen_nic_close - Disables a network interface entry point
1513 */
1514static int netxen_nic_close(struct net_device *netdev)
1515{
3176ff3e 1516 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1517
9f5bc7f1 1518 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1519 return 0;
1520}
1521
1bcfd790
DP		 1522static void
1523netxen_tso_check(struct net_device *netdev,
1524 struct nx_host_tx_ring *tx_ring,
1525 struct cmd_desc_type0 *first_desc,
1526 struct sk_buff *skb)
cd1f8160 1527{
391587c3 1528 u8 opcode = TX_ETHER_PKT;
cdff1036 1529 __be16 protocol = skb->protocol;
028afe71 1530 u16 flags = 0, vid = 0;
1bcfd790 1531 u32 producer;
028afe71 1532 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1bcfd790 1533 struct cmd_desc_type0 *hwdesc;
028afe71 1534 struct vlan_ethhdr *vh;
cdff1036 1535
09640e63 1536 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
028afe71
DP		 1537
1538 vh = (struct vlan_ethhdr *)skb->data;
cdff1036
DP		 1539 protocol = vh->h_vlan_encapsulated_proto;
1540 flags = FLAGS_VLAN_TAGGED;
028afe71
DP		 1541
1542 } else if (vlan_tx_tag_present(skb)) {
1543
1544 flags = FLAGS_VLAN_OOB;
1545 vid = vlan_tx_tag_get(skb);
1546 netxen_set_tx_vlan_tci(first_desc, vid);
1547 vlan_oob = 1;
cdff1036 1548 }
cd1f8160 1549
391587c3
DP		 1550 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1551 skb_shinfo(skb)->gso_size > 0) {
1552
1bcfd790
DP		 1553 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1554
1555 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1556 first_desc->total_hdr_length = hdr_len;
028afe71
DP		 1557 if (vlan_oob) {
1558 first_desc->total_hdr_length += VLAN_HLEN;
1559 first_desc->tcp_hdr_offset = VLAN_HLEN;
1560 first_desc->ip_hdr_offset = VLAN_HLEN;
1561 /* Only in case of TSO on vlan device */
1562 flags |= FLAGS_VLAN_TAGGED;
1563 }
391587c3 1564
09640e63 1565 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3 1566 TX_TCP_LSO6 : TX_TCP_LSO;
1bcfd790 1567 tso = 1;
cd1f8160
DP		 1568
1569 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1570 u8 l4proto;
1571
09640e63 1572 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1573 l4proto = ip_hdr(skb)->protocol;
1574
1575 if (l4proto == IPPROTO_TCP)
1576 opcode = TX_TCP_PKT;
1577 else if(l4proto == IPPROTO_UDP)
1578 opcode = TX_UDP_PKT;
09640e63 1579 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1580 l4proto = ipv6_hdr(skb)->nexthdr;
1581
1582 if (l4proto == IPPROTO_TCP)
1583 opcode = TX_TCPV6_PKT;
1584 else if(l4proto == IPPROTO_UDP)
1585 opcode = TX_UDPV6_PKT;
1586 }
cd1f8160 1587 }
028afe71
DP		 1588
1589 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1590 first_desc->ip_hdr_offset += skb_network_offset(skb);
1bcfd790
DP		 1591 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1592
1593 if (!tso)
1594 return;
1595
1596 /* For LSO, we need to copy the MAC/IP/TCP headers into
1597 * the descriptor ring
1598 */
1599 producer = tx_ring->producer;
1600 copied = 0;
1601 offset = 2;
1602
028afe71
DP		 1603 if (vlan_oob) {
1604 /* Create a TSO vlan header template for firmware */
1605
1606 hwdesc = &tx_ring->desc_head[producer];
1607 tx_ring->cmd_buf_arr[producer].skb = NULL;
1608
1609 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1610 hdr_len + VLAN_HLEN);
1611
1612 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1613 skb_copy_from_linear_data(skb, vh, 12);
1614 vh->h_vlan_proto = htons(ETH_P_8021Q);
1615 vh->h_vlan_TCI = htons(vid);
1616 skb_copy_from_linear_data_offset(skb, 12,
1617 (char *)vh + 16, copy_len - 16);
1618
545eb370 1619 copied = copy_len - VLAN_HLEN;
028afe71
DP		 1620 offset = 0;
1621
1622 producer = get_next_index(producer, tx_ring->num_desc);
1623 }
1624
1bcfd790
DP		 1625 while (copied < hdr_len) {
1626
1627 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1628 (hdr_len - copied));
1629
1630 hwdesc = &tx_ring->desc_head[producer];
1631 tx_ring->cmd_buf_arr[producer].skb = NULL;
1632
1633 skb_copy_from_linear_data_offset(skb, copied,
1634 (char *)hwdesc + offset, copy_len);
1635
1636 copied += copy_len;
1637 offset = 0;
1638
1639 producer = get_next_index(producer, tx_ring->num_desc);
1640 }
1641
1642 tx_ring->producer = producer;
1643 barrier();
cd1f8160
DP		 1644}
1645
ce644ed4
DP		 1646static int
1647netxen_map_tx_skb(struct pci_dev *pdev,
1648 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
6f703406 1649{
ce644ed4
DP		 1650 struct netxen_skb_frag *nf;
1651 struct skb_frag_struct *frag;
1652 int i, nr_frags;
1653 dma_addr_t map;
1654
1655 nr_frags = skb_shinfo(skb)->nr_frags;
1656 nf = &pbuf->frag_array[0];
1657
1658 map = pci_map_single(pdev, skb->data,
1659 skb_headlen(skb), PCI_DMA_TODEVICE);
1660 if (pci_dma_mapping_error(pdev, map))
1661 goto out_err;
6f703406 1662
ce644ed4
DP		 1663 nf->dma = map;
1664 nf->length = skb_headlen(skb);
1665
1666 for (i = 0; i < nr_frags; i++) {
1667 frag = &skb_shinfo(skb)->frags[i];
1668 nf = &pbuf->frag_array[i+1];
1669
1670 map = pci_map_page(pdev, frag->page, frag->page_offset,
1671 frag->size, PCI_DMA_TODEVICE);
1672 if (pci_dma_mapping_error(pdev, map))
1673 goto unwind;
1674
1675 nf->dma = map;
1676 nf->length = frag->size;
1677 }
1678
1679 return 0;
6f703406 1680
ce644ed4 1681unwind:
cf503e8f
DP		 1682 while (--i >= 0) {
1683 nf = &pbuf->frag_array[i+1];
ce644ed4 1684 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
6f703406 1685 }
ce644ed4
DP		 1686
1687 nf = &pbuf->frag_array[0];
1688 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1689
1690out_err:
1691 return -ENOMEM;
6f703406
DP		 1692}
1693
d32cc3d2
DP		 1694static inline void
1695netxen_clear_cmddesc(u64 *desc)
1696{
1bcfd790
DP		 1697 desc[0] = 0ULL;
1698 desc[2] = 0ULL;
d32cc3d2
DP		 1699}
1700
61357325 1701static netdev_tx_t
d32cc3d2 1702netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1703{
3176ff3e 1704 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1705 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
391587c3 1706 struct netxen_cmd_buffer *pbuf;
3d396eb1 1707 struct netxen_skb_frag *buffrag;
1bcfd790
DP		 1708 struct cmd_desc_type0 *hwdesc, *first_desc;
1709 struct pci_dev *pdev;
391587c3 1710 int i, k;
3d396eb1 1711
cb2107be 1712 u32 producer;
ce644ed4 1713 int frag_count, no_of_desc;
d877f1e3 1714 u32 num_txd = tx_ring->num_desc;
3d396eb1 1715
3d396eb1
AK		 1716 frag_count = skb_shinfo(skb)->nr_frags + 1;
1717
d877f1e3 1718 /* 4 fragments per cmd des */
3d396eb1 1719 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1720
cb2107be 1721 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
ba53e6b4 1722 netif_stop_queue(netdev);
ba53e6b4 1723 return NETDEV_TX_BUSY;
53a01e00 1724 }
3d396eb1 1725
cb2107be 1726 producer = tx_ring->producer;
ce644ed4 1727 pbuf = &tx_ring->cmd_buf_arr[producer];
cb2107be 1728
1bcfd790 1729 pdev = adapter->pdev;
391587c3 1730
ce644ed4 1731 if (netxen_map_tx_skb(pdev, skb, pbuf))
1bcfd790 1732 goto drop_packet;
391587c3 1733
3d396eb1 1734 pbuf->skb = skb;
3d396eb1 1735 pbuf->frag_count = frag_count;
6f703406 1736
1bcfd790
DP		 1737 first_desc = hwdesc = &tx_ring->desc_head[producer];
1738 netxen_clear_cmddesc((u64 *)hwdesc);
3d396eb1 1739
ce644ed4
DP		 1740 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1741 netxen_set_tx_port(first_desc, adapter->portnum);
3d396eb1 1742
ce644ed4 1743 for (i = 0; i < frag_count; i++) {
3d396eb1 1744
ce644ed4
DP		 1745 k = i % 4;
1746
1747 if ((k == 0) && (i > 0)) {
1748 /* move to next desc.*/
ba53e6b4 1749 producer = get_next_index(producer, num_txd);
d877f1e3 1750 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1751 netxen_clear_cmddesc((u64 *)hwdesc);
ce644ed4 1752 tx_ring->cmd_buf_arr[producer].skb = NULL;
6f703406 1753 }
3d396eb1 1754
ce644ed4 1755 buffrag = &pbuf->frag_array[i];
3d396eb1 1756
ce644ed4 1757 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
3d396eb1
AK		 1758 switch (k) {
1759 case 0:
ce644ed4 1760 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1761 break;
1762 case 1:
ce644ed4 1763 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1764 break;
1765 case 2:
ce644ed4 1766 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1767 break;
1768 case 3:
ce644ed4 1769 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1770 break;
1771 }
3d396eb1 1772 }
ce644ed4 1773
1bcfd790 1774 tx_ring->producer = get_next_index(producer, num_txd);
3d396eb1 1775
1bcfd790 1776 netxen_tso_check(netdev, tx_ring, first_desc, skb);
6c80b18d 1777
cb2107be 1778 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1779
1bcfd790 1780 adapter->stats.txbytes += skb->len;
ba53e6b4 1781 adapter->stats.xmitcalled++;
3d396eb1 1782
3d396eb1 1783 return NETDEV_TX_OK;
6f703406
DP		 1784
1785drop_packet:
1786 adapter->stats.txdropped++;
1787 dev_kfree_skb_any(skb);
1788 return NETDEV_TX_OK;
3d396eb1
AK		 1789}
1790
a97342f9
DP		 1791static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1792{
1793 struct net_device *netdev = adapter->netdev;
1794 uint32_t temp, temp_state, temp_val;
1795 int rv = 0;
1796
f98a9f69 1797 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1798
1799 temp_state = nx_get_temp_state(temp);
1800 temp_val = nx_get_temp_val(temp);
1801
1802 if (temp_state == NX_TEMP_PANIC) {
1803 printk(KERN_ALERT
1804 "%s: Device temperature %d degrees C exceeds"
1805 " maximum allowed. Hardware has been shut down.\n",
e4135c2d 1806 netdev->name, temp_val);
a97342f9
DP		 1807 rv = 1;
1808 } else if (temp_state == NX_TEMP_WARN) {
1809 if (adapter->temp == NX_TEMP_NORMAL) {
1810 printk(KERN_ALERT
1811 "%s: Device temperature %d degrees C "
1812 "exceeds operating range."
1813 " Immediate action needed.\n",
e4135c2d 1814 netdev->name, temp_val);
a97342f9
DP		 1815 }
1816 } else {
1817 if (adapter->temp == NX_TEMP_WARN) {
1818 printk(KERN_INFO
1819 "%s: Device temperature is now %d degrees C"
e4135c2d 1820 " in normal range.\n", netdev->name,
a97342f9
DP		 1821 temp_val);
1822 }
1823 }
1824 adapter->temp = temp_state;
1825 return rv;
1826}
1827
3bf26ce3 1828void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1829{
1830 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1831
1832 if (adapter->ahw.linkup && !linkup) {
1833 printk(KERN_INFO "%s: %s NIC Link is down\n",
1834 netxen_nic_driver_name, netdev->name);
1835 adapter->ahw.linkup = 0;
1836 if (netif_running(netdev)) {
1837 netif_carrier_off(netdev);
1838 netif_stop_queue(netdev);
1839 }
e424fa9d 1840 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1841 } else if (!adapter->ahw.linkup && linkup) {
1842 printk(KERN_INFO "%s: %s NIC Link is up\n",
1843 netxen_nic_driver_name, netdev->name);
1844 adapter->ahw.linkup = 1;
1845 if (netif_running(netdev)) {
1846 netif_carrier_on(netdev);
1847 netif_wake_queue(netdev);
1848 }
e424fa9d 1849 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1850 }
1851}
1852
3bf26ce3
DP		 1853static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1854{
1855 u32 val, port, linkup;
1856
1857 port = adapter->physical_port;
1858
1859 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1860 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1861 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1862 linkup = (val == XG_LINK_UP_P3);
1863 } else {
f98a9f69 1864 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1865 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1866 linkup = (val >> port) & 1;
1867 else {
1868 val = (val >> port*8) & 0xff;
1869 linkup = (val == XG_LINK_UP);
1870 }
1871 }
1872
1873 netxen_advert_link_change(adapter, linkup);
1874}
1875
3d396eb1
AK		 1876static void netxen_tx_timeout(struct net_device *netdev)
1877{
e424fa9d 1878 struct netxen_adapter *adapter = netdev_priv(netdev);
f17443f4 1879
6a581e93
DP		 1880 if (test_bit(__NX_RESETTING, &adapter->state))
1881 return;
1882
f17443f4 1883 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
e424fa9d 1884 schedule_work(&adapter->tx_timeout_task);
3d396eb1
AK		 1885}
1886
74c520da 1887static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1888{
4790654c 1889 struct netxen_adapter *adapter =
3176ff3e 1890 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1891
b2af9cb0
DP		 1892 if (!netif_running(adapter->netdev))
1893 return;
1894
74c520da 1895 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
6a581e93
DP		 1896 return;
1897
74c520da
AKS		 1898 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
1899 goto request_reset;
1900
1901 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1902 /* try to scrub interrupt */
1903 netxen_napi_disable(adapter);
ba53e6b4 1904
74c520da 1905 adapter->netdev->trans_start = jiffies;
ba53e6b4 1906
74c520da
AKS		 1907 netxen_napi_enable(adapter);
1908
1909 netif_wake_queue(adapter->netdev);
1910
1911 goto done;
1912
1913 } else {
1914 if (!netxen_nic_reset_context(adapter)) {
1915 adapter->netdev->trans_start = jiffies;
1916 goto done;
1917 }
1918
1919 /* context reset failed, fall through for fw reset */
1920 }
1921
1922request_reset:
1923 adapter->need_fw_reset = 1;
1924done:
1925 clear_bit(__NX_RESETTING, &adapter->state);
3d396eb1
AK		 1926}
1927
a97342f9
DP		 1928struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1929{
1930 struct netxen_adapter *adapter = netdev_priv(netdev);
1931 struct net_device_stats *stats = &adapter->net_stats;
1932
1933 memset(stats, 0, sizeof(*stats));
1934
1bb482f8 1935 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
e98e3350 1936 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1937 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1938 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1939 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1940 stats->tx_dropped = adapter->stats.txdropped;
1941
1942 return stats;
1943}
1944
e4c93c81 1945static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1946{
d8b100c5
DP		 1947 struct nx_host_sds_ring *sds_ring = data;
1948 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1949 u32 status = 0;
1950
195c5f98 1951 status = readl(adapter->isr_int_vec);
d71e1be8 1952
195c5f98 1953 if (!(status & adapter->int_vec_bit))
05aaa02d 1954 return IRQ_NONE;
e01872af 1955
195c5f98 1956 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
d71e1be8 1957 /* check interrupt state machine, to be sure */
195c5f98 1958 status = readl(adapter->crb_int_state_reg);
d71e1be8
DP		 1959 if (!ISR_LEGACY_INT_TRIGGERED(status))
1960 return IRQ_NONE;
1961
092bc571
DP		 1962 } else {
1963 unsigned long our_int = 0;
d71e1be8 1964
195c5f98 1965 our_int = readl(adapter->crb_int_state_reg);
092bc571 1966
d71e1be8 1967 /* not our interrupt */
092bc571 1968 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1969 return IRQ_NONE;
1970
092bc571 1971 /* claim interrupt */
195c5f98 1972 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
e01872af 1973
195c5f98 1974 /* clear interrupt */
d8b100c5 1975 netxen_nic_disable_int(sds_ring);
195c5f98 1976 }
092bc571 1977
195c5f98 1978 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 1979 /* read twice to ensure write is flushed */
195c5f98
AKS		 1980 readl(adapter->isr_int_vec);
1981 readl(adapter->isr_int_vec);
092bc571 1982
d8b100c5 1983 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1984
1985 return IRQ_HANDLED;
1986}
1987
e4c93c81 1988static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1989{
d8b100c5
DP		 1990 struct nx_host_sds_ring *sds_ring = data;
1991 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1992
092bc571 1993 /* clear interrupt */
195c5f98 1994 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 1995
d8b100c5 1996 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1997 return IRQ_HANDLED;
1998}
1999
b3df68f8
DP		 2000static irqreturn_t netxen_msix_intr(int irq, void *data)
2001{
d8b100c5 2002 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 2003
d8b100c5 2004 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 2005 return IRQ_HANDLED;
2006}
2007
bea3348e 2008static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 2009{
d8b100c5
DP		 2010 struct nx_host_sds_ring *sds_ring =
2011 container_of(napi, struct nx_host_sds_ring, napi);
2012
2013 struct netxen_adapter *adapter = sds_ring->adapter;
2014
05aaa02d 2015 int tx_complete;
bea3348e 2016 int work_done;
3d396eb1 2017
05aaa02d 2018 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 2019
d8b100c5 2020 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 2021
05aaa02d 2022 if ((work_done < budget) && tx_complete) {
d8b100c5 2023 napi_complete(&sds_ring->napi);
b2af9cb0
DP		 2024 if (netif_running(adapter->netdev))
2025 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 2026 }
2027
bea3348e 2028 return work_done;
3d396eb1
AK		 2029}
2030
2031#ifdef CONFIG_NET_POLL_CONTROLLER
2032static void netxen_nic_poll_controller(struct net_device *netdev)
2033{
3176ff3e 2034 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 2035 disable_irq(adapter->irq);
1494a814 2036 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 2037 enable_irq(adapter->irq);
2038}
2039#endif
3d396eb1 2040
6a581e93
DP		 2041static int
2042nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2043{
2044 int count;
2045 if (netxen_api_lock(adapter))
2046 return -EIO;
2047
2048 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2049
2050 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2051
2052 netxen_api_unlock(adapter);
2053 return count;
2054}
2055
2056static int
2057nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2058{
2059 int count;
2060 if (netxen_api_lock(adapter))
2061 return -EIO;
2062
2063 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2064 WARN_ON(count == 0);
2065
2066 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2067
2068 if (count == 0)
2069 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2070
2071 netxen_api_unlock(adapter);
2072 return count;
2073}
2074
74c520da
AKS		 2075static void
2076nx_dev_request_reset(struct netxen_adapter *adapter)
2077{
2078 u32 state;
2079
2080 if (netxen_api_lock(adapter))
2081 return;
2082
2083 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2084
2085 if (state != NX_DEV_INITALIZING)
2086 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2087
2088 netxen_api_unlock(adapter);
2089}
2090
6a581e93
DP		 2091static int
2092netxen_can_start_firmware(struct netxen_adapter *adapter)
2093{
2094 int count;
2095 int can_start = 0;
2096
2097 if (netxen_api_lock(adapter))
2098 return 0;
2099
2100 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2101
2102 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2103 count = 0;
2104
2105 if (count == 0) {
2106 can_start = 1;
2107 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2108 }
2109
2110 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2111
2112 netxen_api_unlock(adapter);
2113
2114 return can_start;
2115}
2116
2117static void
2118netxen_schedule_work(struct netxen_adapter *adapter,
2119 work_func_t func, int delay)
2120{
2121 INIT_DELAYED_WORK(&adapter->fw_work, func);
2122 schedule_delayed_work(&adapter->fw_work, delay);
2123}
2124
2125static void
2126netxen_cancel_fw_work(struct netxen_adapter *adapter)
2127{
2128 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2129 msleep(10);
2130
2131 cancel_delayed_work_sync(&adapter->fw_work);
2132}
2133
2134static void
2135netxen_attach_work(struct work_struct *work)
2136{
2137 struct netxen_adapter *adapter = container_of(work,
2138 struct netxen_adapter, fw_work.work);
2139 struct net_device *netdev = adapter->netdev;
2140 int err = 0;
2141
2142 if (netif_running(netdev)) {
2143 err = netxen_nic_attach(adapter);
2144 if (err)
2145 goto done;
2146
2147 err = netxen_nic_up(adapter, netdev);
2148 if (err) {
2149 netxen_nic_detach(adapter);
2150 goto done;
2151 }
2152
d0725e4d 2153 netxen_config_indev_addr(netdev, NETDEV_UP);
6a581e93
DP		 2154 }
2155
2156 netif_device_attach(netdev);
2157
2158done:
2159 adapter->fw_fail_cnt = 0;
2160 clear_bit(__NX_RESETTING, &adapter->state);
2161 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2162}
2163
2164static void
2165netxen_fwinit_work(struct work_struct *work)
2166{
2167 struct netxen_adapter *adapter = container_of(work,
2168 struct netxen_adapter, fw_work.work);
2169 int dev_state;
2170
2171 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2172
2173 switch (dev_state) {
2174 case NX_DEV_COLD:
2175 case NX_DEV_READY:
74c520da
AKS		 2176 if (!netxen_start_firmware(adapter)) {
2177 netxen_schedule_work(adapter, netxen_attach_work, 0);
2178 return;
2179 }
2180 break;
6a581e93
DP		 2181
2182 case NX_DEV_INITALIZING:
2183 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2184 netxen_schedule_work(adapter,
2185 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2186 return;
2187 }
2188 break;
2189
2190 case NX_DEV_FAILED:
2191 default:
2192 break;
2193 }
2194
2195 nx_incr_dev_ref_cnt(adapter);
2196 clear_bit(__NX_RESETTING, &adapter->state);
2197}
2198
2199static void
2200netxen_detach_work(struct work_struct *work)
2201{
2202 struct netxen_adapter *adapter = container_of(work,
2203 struct netxen_adapter, fw_work.work);
2204 struct net_device *netdev = adapter->netdev;
2205 int ref_cnt, delay;
2206 u32 status;
2207
2208 netif_device_detach(netdev);
2209
2210 if (netif_running(netdev))
2211 netxen_nic_down(adapter, netdev);
2212
2213 netxen_nic_detach(adapter);
2214
2215 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2216
2217 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2218
2219 if (status & NX_RCODE_FATAL_ERROR)
2220 return;
2221
2222 if (adapter->temp == NX_TEMP_PANIC)
2223 return;
2224
2225 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2226
2227 adapter->fw_wait_cnt = 0;
2228 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2229}
2230
2231static int
2232netxen_check_health(struct netxen_adapter *adapter)
2233{
2234 u32 state, heartbit;
2235 struct net_device *netdev = adapter->netdev;
2236
2237 if (netxen_nic_check_temp(adapter))
2238 goto detach;
2239
74c520da
AKS		 2240 if (adapter->need_fw_reset) {
2241 nx_dev_request_reset(adapter);
2242 goto detach;
2243 }
2244
6a581e93
DP		 2245 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2246 if (state == NX_DEV_NEED_RESET)
2247 goto detach;
2248
2249 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2250 return 0;
2251
2252 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2253 if (heartbit != adapter->heartbit) {
2254 adapter->heartbit = heartbit;
2255 adapter->fw_fail_cnt = 0;
2256 return 0;
2257 }
2258
2259 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2260 return 0;
2261
2262 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2263
2264 dev_info(&netdev->dev, "firmware hang detected\n");
2265
2266detach:
2267 if (!test_and_set_bit(__NX_RESETTING, &adapter->state))
2268 netxen_schedule_work(adapter, netxen_detach_work, 0);
2269 return 1;
2270}
2271
2272static void
2273netxen_fw_poll_work(struct work_struct *work)
2274{
2275 struct netxen_adapter *adapter = container_of(work,
2276 struct netxen_adapter, fw_work.work);
2277
2278 if (test_bit(__NX_RESETTING, &adapter->state))
2279 goto reschedule;
2280
2281 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2282 if (!adapter->has_link_events) {
2283
2284 netxen_nic_handle_phy_intr(adapter);
2285
2286 if (adapter->link_changed)
2287 netxen_nic_set_link_parameters(adapter);
2288 }
2289 }
2290
2291 if (netxen_check_health(adapter))
2292 return;
2293
2294reschedule:
2295 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2296}
2297
fa3ce355
NK		 2298static ssize_t
2299netxen_store_bridged_mode(struct device *dev,
2300 struct device_attribute *attr, const char *buf, size_t len)
2301{
2302 struct net_device *net = to_net_dev(dev);
2303 struct netxen_adapter *adapter = netdev_priv(net);
2304 unsigned long new;
2305 int ret = -EINVAL;
2306
2307 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2308 goto err_out;
2309
2310 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2311 goto err_out;
2312
2313 if (strict_strtoul(buf, 2, &new))
2314 goto err_out;
2315
2316 if (!netxen_config_bridged_mode(adapter, !!new))
2317 ret = len;
2318
2319err_out:
2320 return ret;
2321}
2322
2323static ssize_t
2324netxen_show_bridged_mode(struct device *dev,
2325 struct device_attribute *attr, char *buf)
2326{
2327 struct net_device *net = to_net_dev(dev);
2328 struct netxen_adapter *adapter;
2329 int bridged_mode = 0;
2330
2331 adapter = netdev_priv(net);
2332
2333 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2334 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2335
2336 return sprintf(buf, "%d\n", bridged_mode);
2337}
2338
2339static struct device_attribute dev_attr_bridged_mode = {
2340 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2341 .show = netxen_show_bridged_mode,
2342 .store = netxen_store_bridged_mode,
2343};
2344
2345static void
2346netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2347{
2348 struct net_device *netdev = adapter->netdev;
2349 struct device *dev = &netdev->dev;
2350
2351 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2352 /* bridged_mode control */
2353 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2354 dev_warn(&netdev->dev,
2355 "failed to create bridged_mode sysfs entry\n");
2356 }
2357 }
2358}
2359
2360static void
2361netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2362{
2363 struct net_device *netdev = adapter->netdev;
2364 struct device *dev = &netdev->dev;
2365
2366 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2367 device_remove_file(dev, &dev_attr_bridged_mode);
2368}
2369
044824d9
DP		 2370#ifdef CONFIG_INET
2371
6598b169
DP		 2372#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2373
2374static int
2375netxen_destip_supported(struct netxen_adapter *adapter)
2376{
2377 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2378 return 0;
2379
2380 if (adapter->ahw.cut_through)
2381 return 0;
2382
2383 return 1;
2384}
2385
d0725e4d
AKS		 2386static void
2387netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2388{
2389 struct in_device *indev;
2390 struct netxen_adapter *adapter = netdev_priv(dev);
2391
3db76755 2392 if (!netxen_destip_supported(adapter))
d0725e4d
AKS		 2393 return;
2394
2395 indev = in_dev_get(dev);
2396 if (!indev)
2397 return;
2398
2399 for_ifa(indev) {
2400 switch (event) {
2401 case NETDEV_UP:
2402 netxen_config_ipaddr(adapter,
2403 ifa->ifa_address, NX_IP_UP);
2404 break;
2405 case NETDEV_DOWN:
2406 netxen_config_ipaddr(adapter,
2407 ifa->ifa_address, NX_IP_DOWN);
2408 break;
2409 default:
2410 break;
2411 }
2412 } endfor_ifa(indev);
2413
2414 in_dev_put(indev);
2415 return;
2416}
2417
6598b169
DP		 2418static int netxen_netdev_event(struct notifier_block *this,
2419 unsigned long event, void *ptr)
2420{
2421 struct netxen_adapter *adapter;
2422 struct net_device *dev = (struct net_device *)ptr;
6598b169
DP		 2423
2424recheck:
2425 if (dev == NULL)
2426 goto done;
2427
2428 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2429 dev = vlan_dev_real_dev(dev);
2430 goto recheck;
2431 }
2432
2433 if (!is_netxen_netdev(dev))
2434 goto done;
2435
2436 adapter = netdev_priv(dev);
2437
d0725e4d 2438 if (!adapter)
6598b169
DP		 2439 goto done;
2440
2441 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2442 goto done;
2443
d0725e4d 2444 netxen_config_indev_addr(dev, event);
6598b169
DP		 2445done:
2446 return NOTIFY_DONE;
2447}
2448
2449static int
2450netxen_inetaddr_event(struct notifier_block *this,
2451 unsigned long event, void *ptr)
2452{
2453 struct netxen_adapter *adapter;
2454 struct net_device *dev;
2455
2456 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2457
2458 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2459
2460recheck:
2461 if (dev == NULL || !netif_running(dev))
2462 goto done;
2463
2464 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2465 dev = vlan_dev_real_dev(dev);
2466 goto recheck;
2467 }
2468
2469 if (!is_netxen_netdev(dev))
2470 goto done;
2471
2472 adapter = netdev_priv(dev);
2473
2474 if (!adapter || !netxen_destip_supported(adapter))
2475 goto done;
2476
2477 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2478 goto done;
2479
2480 switch (event) {
2481 case NETDEV_UP:
2482 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2483 break;
2484 case NETDEV_DOWN:
2485 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2486 break;
2487 default:
2488 break;
2489 }
2490
2491done:
2492 return NOTIFY_DONE;
2493}
2494
2495static struct notifier_block netxen_netdev_cb = {
2496 .notifier_call = netxen_netdev_event,
2497};
2498
2499static struct notifier_block netxen_inetaddr_cb = {
2500 .notifier_call = netxen_inetaddr_event,
2501};
9feae56c
RD		 2502#else
2503static void
2504netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2505{ }
044824d9 2506#endif
6598b169 2507
3d396eb1
AK		 2508static struct pci_driver netxen_driver = {
2509 .name = netxen_nic_driver_name,
2510 .id_table = netxen_pci_tbl,
2511 .probe = netxen_nic_probe,
0b72e659 2512 .remove = __devexit_p(netxen_nic_remove),
01542cd1 2513#ifdef CONFIG_PM
0b72e659 2514 .suspend = netxen_nic_suspend,
22b5794b 2515 .resume = netxen_nic_resume,
01542cd1 2516#endif
22b5794b 2517 .shutdown = netxen_nic_shutdown
3d396eb1
AK		 2518};
2519
3d396eb1
AK		 2520static int __init netxen_init_module(void)
2521{
ff4fbd43
DP		 2522 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2523
044824d9 2524#ifdef CONFIG_INET
6598b169
DP		 2525 register_netdevice_notifier(&netxen_netdev_cb);
2526 register_inetaddr_notifier(&netxen_inetaddr_cb);
044824d9 2527#endif
6598b169 2528
184231bd 2529 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 2530}
2531
2532module_init(netxen_init_module);
2533
2534static void __exit netxen_exit_module(void)
2535{
3d396eb1 2536 pci_unregister_driver(&netxen_driver);
6598b169 2537
044824d9 2538#ifdef CONFIG_INET
6598b169
DP		 2539 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2540 unregister_netdevice_notifier(&netxen_netdev_cb);
044824d9 2541#endif
3d396eb1
AK		 2542}
2543
2544module_exit(netxen_exit_module);
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