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gre: Optimize multiple unregistration
[linux-2.6-block.git] / drivers / net / netxen / netxen_nic_main.c
CommitLineData
3d396eb1 1/*
5d242f1c 2 * Copyright (C) 2003 - 2009 NetXen, Inc.
13af7a6e 3 * Copyright (C) 2009 - QLogic Corporation.
3d396eb1 4 * All rights reserved.
80922fbc 5 *
3d396eb1
AK		 6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
80922fbc 10 *
3d396eb1
AK		 11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
80922fbc 15 *
3d396eb1
AK		 16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19 * MA 02111-1307, USA.
80922fbc 20 *
3d396eb1
AK		 21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.
80922fbc 23 *
3d396eb1
AK		 24 */
25
cb8011ad 26#include <linux/vmalloc.h>
e98e3350 27#include <linux/interrupt.h>
3d396eb1
AK		 28#include "netxen_nic_hw.h"
29
30#include "netxen_nic.h"
3d396eb1 31
1494a814 32#include <linux/dma-mapping.h>
391587c3 33#include <linux/if_vlan.h>
c9bdd4b5 34#include <net/ip.h>
00977784 35#include <linux/ipv6.h>
6598b169 36#include <linux/inetdevice.h>
1494a814 37
3d396eb1
AK		 38MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
39MODULE_LICENSE("GPL");
40MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
41
ceded32f 42char netxen_nic_driver_name[] = "netxen_nic";
3d396eb1 43static char netxen_nic_driver_string[] = "NetXen Network Driver version "
cb8011ad 44 NETXEN_NIC_LINUX_VERSIONID;
3d396eb1 45
2956640d
DP		 46static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
47
48/* Default to restricted 1G auto-neg mode */
49static int wol_port_mode = 5;
50
51static int use_msi = 1;
52
53static int use_msi_x = 1;
54
caa2dd53
NK		 55static unsigned long auto_fw_reset = AUTO_FW_RESET_ENABLED;
56
3d396eb1
AK		 57/* Local functions to NetXen NIC driver */
58static int __devinit netxen_nic_probe(struct pci_dev *pdev,
2956640d 59 const struct pci_device_id *ent);
3d396eb1
AK		 60static void __devexit netxen_nic_remove(struct pci_dev *pdev);
61static int netxen_nic_open(struct net_device *netdev);
62static int netxen_nic_close(struct net_device *netdev);
61357325
SH		 63static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
64 struct net_device *);
3d396eb1 65static void netxen_tx_timeout(struct net_device *netdev);
74c520da 66static void netxen_tx_timeout_task(struct work_struct *work);
6a581e93
DP		 67static void netxen_fw_poll_work(struct work_struct *work);
68static void netxen_schedule_work(struct netxen_adapter *adapter,
69 work_func_t func, int delay);
70static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
bea3348e 71static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 72#ifdef CONFIG_NET_POLL_CONTROLLER
73static void netxen_nic_poll_controller(struct net_device *netdev);
74#endif
fa3ce355
NK		 75
76static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
77static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
70f9cf89
DP		 78static void netxen_create_diag_entries(struct netxen_adapter *adapter);
79static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
fa3ce355 80
6a581e93
DP		 81static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
82static int netxen_can_start_firmware(struct netxen_adapter *adapter);
83
1494a814 84static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 85static irqreturn_t netxen_msi_intr(int irq, void *data);
b3df68f8 86static irqreturn_t netxen_msix_intr(int irq, void *data);
3d396eb1 87
d0725e4d
AKS		 88static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
89
3d396eb1 90/* PCI Device ID Table */
70081ac5 91#define ENTRY(device) \
040dec3b 92 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 93 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
94
3d396eb1 95static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 96 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
97 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
98 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
99 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
100 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
101 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
102 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
103 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 104 {0,}
105};
106
107MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
108
7830b22c
DP		 109static uint32_t crb_cmd_producer[4] = {
110 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
111 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
112};
113
c9fc891f 114void
3ce06a32 115netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
cb2107be 116 struct nx_host_tx_ring *tx_ring)
3176ff3e 117{
195c5f98 118 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
cb2107be
DP		 119
120 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
121 netif_stop_queue(adapter->netdev);
122 smp_mb();
123 }
3176ff3e
MT		 124}
125
7830b22c
DP		 126static uint32_t crb_cmd_consumer[4] = {
127 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
128 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
129};
130
3ce06a32
DP		 131static inline void
132netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
cb2107be 133 struct nx_host_tx_ring *tx_ring)
3176ff3e 134{
195c5f98 135 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
3176ff3e
MT		 136}
137
2956640d 138static uint32_t msi_tgt_status[8] = {
443be796 139 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 140 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
141 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
142 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 143};
144
2956640d
DP		 145static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
146
d8b100c5 147static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 148{
d8b100c5
DP		 149 struct netxen_adapter *adapter = sds_ring->adapter;
150
195c5f98 151 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 152}
153
d8b100c5 154static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 155{
d8b100c5
DP		 156 struct netxen_adapter *adapter = sds_ring->adapter;
157
195c5f98 158 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 159
092bc571 160 if (!NETXEN_IS_MSI_FAMILY(adapter))
195c5f98 161 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
4638aef1
SH		 162}
163
71dcddbd
DP		 164static int
165netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
166{
167 int size = sizeof(struct nx_host_sds_ring) * count;
168
169 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
170
171 return (recv_ctx->sds_rings == NULL);
172}
173
d8b100c5 174static void
71dcddbd
DP		 175netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
176{
177 if (recv_ctx->sds_rings != NULL)
178 kfree(recv_ctx->sds_rings);
232e7d68
DP		 179
180 recv_ctx->sds_rings = NULL;
71dcddbd
DP		 181}
182
183static int
d8b100c5
DP		 184netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
185{
186 int ring;
187 struct nx_host_sds_ring *sds_ring;
188 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
189
71dcddbd 190 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
f17443f4 191 return -ENOMEM;
71dcddbd 192
d8b100c5
DP		 193 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
194 sds_ring = &recv_ctx->sds_rings[ring];
195 netif_napi_add(netdev, &sds_ring->napi,
196 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
197 }
71dcddbd
DP		 198
199 return 0;
d8b100c5
DP		 200}
201
232e7d68
DP		 202static void
203netxen_napi_del(struct netxen_adapter *adapter)
204{
205 int ring;
206 struct nx_host_sds_ring *sds_ring;
207 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
208
209 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
210 sds_ring = &recv_ctx->sds_rings[ring];
211 netif_napi_del(&sds_ring->napi);
212 }
213
214 netxen_free_sds_rings(&adapter->recv_ctx);
215}
216
d8b100c5
DP		 217static void
218netxen_napi_enable(struct netxen_adapter *adapter)
219{
220 int ring;
221 struct nx_host_sds_ring *sds_ring;
222 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
223
224 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
225 sds_ring = &recv_ctx->sds_rings[ring];
226 napi_enable(&sds_ring->napi);
227 netxen_nic_enable_int(sds_ring);
228 }
229}
230
231static void
232netxen_napi_disable(struct netxen_adapter *adapter)
233{
234 int ring;
235 struct nx_host_sds_ring *sds_ring;
236 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
237
238 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
239 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 240 netxen_nic_disable_int(sds_ring);
b2af9cb0
DP		 241 napi_synchronize(&sds_ring->napi);
242 napi_disable(&sds_ring->napi);
d8b100c5
DP		 243 }
244}
245
50c643e7 246static int nx_set_dma_mask(struct netxen_adapter *adapter)
2956640d
DP		 247{
248 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 249 uint64_t mask, cmask;
250
251 adapter->pci_using_dac = 0;
2956640d 252
6afd142f 253 mask = DMA_BIT_MASK(32);
6afd142f 254 cmask = DMA_BIT_MASK(32);
1f434f63 255
50c643e7 256 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1f434f63 257#ifndef CONFIG_IA64
6afd142f 258 mask = DMA_BIT_MASK(35);
1f434f63 259#endif
50c643e7
DP		 260 } else {
261 mask = DMA_BIT_MASK(39);
262 cmask = mask;
263 }
264
2956640d 265 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 266 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 267 adapter->pci_using_dac = 1;
268 return 0;
269 }
2956640d 270
1f434f63
DP		 271 return -EIO;
272}
273
274/* Update addressable range if firmware supports it */
275static int
276nx_update_dma_mask(struct netxen_adapter *adapter)
277{
278 int change, shift, err;
50c643e7 279 uint64_t mask, old_mask, old_cmask;
1f434f63
DP		 280 struct pci_dev *pdev = adapter->pdev;
281
282 change = 0;
283
f98a9f69 284 shift = NXRD32(adapter, CRB_DMA_SHIFT);
f60f7856 285 if (shift > 32)
1f434f63
DP		 286 return 0;
287
288 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
289 change = 1;
290 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
291 change = 1;
292
293 if (change) {
294 old_mask = pdev->dma_mask;
50c643e7
DP		 295 old_cmask = pdev->dev.coherent_dma_mask;
296
f60f7856 297 mask = DMA_BIT_MASK(32+shift);
1f434f63
DP		 298
299 err = pci_set_dma_mask(pdev, mask);
300 if (err)
50c643e7
DP		 301 goto err_out;
302
303 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
304
305 err = pci_set_consistent_dma_mask(pdev, mask);
306 if (err)
307 goto err_out;
308 }
309 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
2956640d
DP		 310 }
311
2956640d 312 return 0;
50c643e7
DP		 313
314err_out:
315 pci_set_dma_mask(pdev, old_mask);
316 pci_set_consistent_dma_mask(pdev, old_cmask);
317 return err;
2956640d
DP		 318}
319
2956640d
DP		 320static int
321netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
322{
27c915a4 323 u32 val, timeout;
2956640d
DP		 324
325 if (first_boot == 0x55555555) {
326 /* This is the first boot after power up */
f98a9f69 327 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 328
329 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
330 return 0;
2956640d
DP		 331
332 /* PCI bus master workaround */
f98a9f69 333 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 334 if (!(first_boot & 0x4)) {
335 first_boot |= 0x4;
f98a9f69
DP		 336 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
337 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 338 }
339
340 /* This is the first boot after power up */
f98a9f69 341 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 342 if (first_boot != 0x80000f) {
343 /* clear the register for future unloads/loads */
f98a9f69 344 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 345 return -EIO;
2956640d
DP		 346 }
347
27c915a4 348 /* Start P2 boot loader */
f98a9f69
DP		 349 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
350 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 351 timeout = 0;
352 do {
353 msleep(1);
f98a9f69 354 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 355
356 if (++timeout > 5000)
357 return -EIO;
358
359 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 360 }
27c915a4 361 return 0;
2956640d
DP		 362}
363
364static void netxen_set_port_mode(struct netxen_adapter *adapter)
365{
366 u32 val, data;
367
1e2d0059 368 val = adapter->ahw.board_type;
2956640d
DP		 369 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
370 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
371 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
372 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 373 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 374 } else if (port_mode == NETXEN_PORT_MODE_XG) {
375 data = NETXEN_PORT_MODE_XG;
f98a9f69 376 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 377 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
378 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 379 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 380 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
381 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 382 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 383 } else {
384 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 385 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 386 }
387
388 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
389 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
390 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
391 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
392 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
393 }
f98a9f69 394 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 395 }
396}
397
2956640d
DP		 398static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
399{
400 u32 control;
401 int pos;
402
403 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
404 if (pos) {
405 pci_read_config_dword(pdev, pos, &control);
406 if (enable)
407 control |= PCI_MSIX_FLAGS_ENABLE;
408 else
409 control = 0;
410 pci_write_config_dword(pdev, pos, control);
411 }
412}
413
be339aee 414static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 415{
416 int i;
417
be339aee 418 for (i = 0; i < count; i++)
2956640d
DP		 419 adapter->msix_entries[i].entry = i;
420}
421
9dc28efe
DP		 422static int
423netxen_read_mac_addr(struct netxen_adapter *adapter)
424{
425 int i;
426 unsigned char *p;
427 __le64 mac_addr;
9dc28efe
DP		 428 struct net_device *netdev = adapter->netdev;
429 struct pci_dev *pdev = adapter->pdev;
430
9dc28efe
DP		 431 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
432 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
433 return -EIO;
434 } else {
435 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
436 return -EIO;
437 }
438
439 p = (unsigned char *)&mac_addr;
440 for (i = 0; i < 6; i++)
441 netdev->dev_addr[i] = *(p + 5 - i);
442
443 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
444
445 /* set station address */
446
e174961c
JB		 447 if (!is_valid_ether_addr(netdev->perm_addr))
448 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 449
450 return 0;
451}
452
3d0a3cc9
DP		 453int netxen_nic_set_mac(struct net_device *netdev, void *p)
454{
455 struct netxen_adapter *adapter = netdev_priv(netdev);
456 struct sockaddr *addr = p;
457
458 if (!is_valid_ether_addr(addr->sa_data))
459 return -EINVAL;
460
461 if (netif_running(netdev)) {
462 netif_device_detach(netdev);
463 netxen_napi_disable(adapter);
464 }
465
466 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
467 adapter->macaddr_set(adapter, addr->sa_data);
468
469 if (netif_running(netdev)) {
470 netif_device_attach(netdev);
471 netxen_napi_enable(adapter);
472 }
473 return 0;
474}
475
1abd266f
SH		 476static void netxen_set_multicast_list(struct net_device *dev)
477{
478 struct netxen_adapter *adapter = netdev_priv(dev);
479
3d0a3cc9 480 adapter->set_multi(dev);
1abd266f
SH		 481}
482
483static const struct net_device_ops netxen_netdev_ops = {
484 .ndo_open = netxen_nic_open,
485 .ndo_stop = netxen_nic_close,
486 .ndo_start_xmit = netxen_nic_xmit_frame,
487 .ndo_get_stats = netxen_nic_get_stats,
488 .ndo_validate_addr = eth_validate_addr,
489 .ndo_set_multicast_list = netxen_set_multicast_list,
490 .ndo_set_mac_address = netxen_nic_set_mac,
491 .ndo_change_mtu = netxen_nic_change_mtu,
492 .ndo_tx_timeout = netxen_tx_timeout,
493#ifdef CONFIG_NET_POLL_CONTROLLER
494 .ndo_poll_controller = netxen_nic_poll_controller,
495#endif
496};
497
97daee83
DP		 498static void
499netxen_setup_intr(struct netxen_adapter *adapter)
500{
501 struct netxen_legacy_intr_set *legacy_intrp;
502 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 503 int err, num_msix;
504
505 if (adapter->rss_supported) {
506 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
507 MSIX_ENTRIES_PER_ADAPTER : 2;
508 } else
509 num_msix = 1;
510
511 adapter->max_sds_rings = 1;
97daee83
DP		 512
513 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 514
515 if (adapter->ahw.revision_id >= NX_P3_B0)
516 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
517 else
518 legacy_intrp = &legacy_intr[0];
195c5f98
AKS		 519
520 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
521 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
522 legacy_intrp->tgt_status_reg);
523 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
524 legacy_intrp->tgt_mask_reg);
525 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
526 legacy_intrp->pci_int_reg);
527 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
528
529 if (adapter->ahw.revision_id >= NX_P3_B1)
530 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
531 ISR_INT_STATE_REG);
532 else
533 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
534 CRB_INT_VECTOR);
97daee83
DP		 535
536 netxen_set_msix_bit(pdev, 0);
537
538 if (adapter->msix_supported) {
539
be339aee
DP		 540 netxen_init_msix_entries(adapter, num_msix);
541 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
542 if (err == 0) {
543 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
544 netxen_set_msix_bit(pdev, 1);
97daee83 545
be339aee
DP		 546 if (adapter->rss_supported)
547 adapter->max_sds_rings = num_msix;
97daee83 548
be339aee
DP		 549 dev_info(&pdev->dev, "using msi-x interrupts\n");
550 return;
551 }
552
553 if (err > 0)
554 pci_disable_msix(pdev);
555
556 /* fall through for msi */
97daee83 557 }
be339aee
DP		 558
559 if (use_msi && !pci_enable_msi(pdev)) {
560 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
195c5f98
AKS		 561 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
562 msi_tgt_status[adapter->ahw.pci_func]);
be339aee 563 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 564 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 565 return;
566 }
567
568 dev_info(&pdev->dev, "using legacy interrupts\n");
569 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 570}
571
572static void
573netxen_teardown_intr(struct netxen_adapter *adapter)
574{
575 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
576 pci_disable_msix(adapter->pdev);
577 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
578 pci_disable_msi(adapter->pdev);
579}
580
581static void
582netxen_cleanup_pci_map(struct netxen_adapter *adapter)
583{
584 if (adapter->ahw.db_base != NULL)
585 iounmap(adapter->ahw.db_base);
586 if (adapter->ahw.pci_base0 != NULL)
587 iounmap(adapter->ahw.pci_base0);
588 if (adapter->ahw.pci_base1 != NULL)
589 iounmap(adapter->ahw.pci_base1);
590 if (adapter->ahw.pci_base2 != NULL)
591 iounmap(adapter->ahw.pci_base2);
592}
593
594static int
595netxen_setup_pci_map(struct netxen_adapter *adapter)
596{
597 void __iomem *mem_ptr0 = NULL;
598 void __iomem *mem_ptr1 = NULL;
599 void __iomem *mem_ptr2 = NULL;
600 void __iomem *db_ptr = NULL;
601
71fb62fb
DP		 602 resource_size_t mem_base, db_base;
603 unsigned long mem_len, db_len = 0, pci_len0 = 0;
97daee83
DP		 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 */
907fa120 614 adapter->ahw.crb_win = -1;
47abe356 615 adapter->ahw.ocm_win = -1;
97daee83
DP		 616
617 /* remap phys address */
618 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
619 mem_len = pci_resource_len(pdev, 0);
97daee83 620
97daee83
DP		 621 /* 128 Meg of memory */
622 if (mem_len == NETXEN_PCI_128MB_SIZE) {
623 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
624 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
625 SECOND_PAGE_GROUP_SIZE);
626 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
627 THIRD_PAGE_GROUP_SIZE);
47abe356 628 pci_len0 = FIRST_PAGE_GROUP_SIZE;
97daee83
DP		 629 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
630 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
631 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
632 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83 633 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
97daee83
DP		 634
635 mem_ptr0 = pci_ioremap_bar(pdev, 0);
636 if (mem_ptr0 == NULL) {
637 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
638 return -EIO;
639 }
640 pci_len0 = mem_len;
97daee83
DP		 641 } else {
642 return -EIO;
643 }
644
195c5f98
AKS		 645 netxen_setup_hwops(adapter);
646
97daee83
DP		 647 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
648
649 adapter->ahw.pci_base0 = mem_ptr0;
650 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 651 adapter->ahw.pci_base1 = mem_ptr1;
652 adapter->ahw.pci_base2 = mem_ptr2;
653
6abb4b83
AKS		 654 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
655 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
656 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
657
658 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
47abe356
DP		 659 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
660 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
661 }
662
97daee83
DP		 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
2b9e62ee
DP		 694static void
695netxen_check_options(struct netxen_adapter *adapter)
696{
697 u32 fw_major, fw_minor, fw_build;
698 char brd_name[NETXEN_MAX_SHORT_NAME];
699 char serial_num[32];
700 int i, offset, val;
701 int *ptr32;
702 struct pci_dev *pdev = adapter->pdev;
703
704 adapter->driver_mismatch = 0;
705
706 ptr32 = (int *)&serial_num;
707 offset = NX_FW_SERIAL_NUM_OFFSET;
708 for (i = 0; i < 8; i++) {
709 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
710 dev_err(&pdev->dev, "error reading board info\n");
711 adapter->driver_mismatch = 1;
712 return;
713 }
714 ptr32[i] = cpu_to_le32(val);
715 offset += sizeof(u32);
716 }
717
718 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
719 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
720 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
721
722 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
723
724 if (adapter->portnum == 0) {
725 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
726
727 printk(KERN_INFO "NetXen %s Board S/N %s Chip rev 0x%x\n",
728 brd_name, serial_num, adapter->ahw.revision_id);
729 }
730
731 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
732 adapter->driver_mismatch = 1;
733 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
734 fw_major, fw_minor, fw_build);
735 return;
736 }
737
738 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
739 i = NXRD32(adapter, NETXEN_SRE_MISC);
740 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
741 }
742
743 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
744 fw_major, fw_minor, fw_build,
745 adapter->ahw.cut_through ? "cut-through" : "legacy");
746
747 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
748 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
749
750 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
751
752 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
753 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
754 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
755 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
756 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
757 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
758 }
759
760 adapter->msix_supported = 0;
761 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
762 adapter->msix_supported = !!use_msi_x;
763 adapter->rss_supported = !!use_msi_x;
764 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
765 switch (adapter->ahw.board_type) {
766 case NETXEN_BRDTYPE_P2_SB31_10G:
767 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
768 adapter->msix_supported = !!use_msi_x;
769 adapter->rss_supported = !!use_msi_x;
770 break;
771 default:
772 break;
773 }
774 }
775
776 adapter->num_txd = MAX_CMD_DESCRIPTORS;
777
778 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
779 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
780 adapter->max_rds_rings = 3;
781 } else {
782 adapter->num_lro_rxd = 0;
783 adapter->max_rds_rings = 2;
784 }
785}
786
ba599d4f 787static int
6a581e93 788netxen_start_firmware(struct netxen_adapter *adapter)
ba599d4f
DP		 789{
790 int val, err, first_boot;
791 struct pci_dev *pdev = adapter->pdev;
792
2b9e62ee
DP		 793 /* required for NX2031 dummy dma */
794 err = nx_set_dma_mask(adapter);
795 if (err)
796 return err;
797
6a581e93 798 if (!netxen_can_start_firmware(adapter))
96f2ebd2 799 goto wait_init;
0b72e659 800
f98a9f69 801 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 802
803 err = netxen_check_hw_init(adapter, first_boot);
804 if (err) {
805 dev_err(&pdev->dev, "error in init HW init sequence\n");
806 return err;
807 }
808
6a581e93 809 netxen_request_firmware(adapter);
f7185c71 810
67c38fc6 811 err = netxen_need_fw_reset(adapter);
1dbc84a7 812 if (err < 0)
db4cfd8a 813 goto err_out;
1dbc84a7 814 if (err == 0)
ec5c50cb 815 goto ready;
67c38fc6 816
ba599d4f 817 if (first_boot != 0x55555555) {
f98a9f69 818 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
0be367bd 819 netxen_pinit_from_rom(adapter);
ba599d4f
DP		 820 msleep(1);
821 }
567c6c4e 822
f98a9f69 823 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
6a581e93
DP		 824 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
825 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
826
567c6c4e
DP		 827 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
828 netxen_set_port_mode(adapter);
829
db4cfd8a
DP		 830 err = netxen_load_firmware(adapter);
831 if (err)
832 goto err_out;
ba599d4f 833
6a581e93
DP		 834 netxen_release_firmware(adapter);
835
ba599d4f
DP		 836 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
837
838 /* Initialize multicast addr pool owners */
839 val = 0x7654;
1e2d0059 840 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 841 val |= 0x0f000000;
f98a9f69 842 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 843
844 }
845
83ac51fa 846 err = netxen_init_dummy_dma(adapter);
ba599d4f 847 if (err)
db4cfd8a 848 goto err_out;
ba599d4f
DP		 849
850 /*
851 * Tell the hardware our version number.
852 */
853 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
854 | ((_NETXEN_NIC_LINUX_MINOR << 8))
855 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 856 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 857
ec5c50cb 858ready:
6a581e93
DP		 859 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
860
96f2ebd2 861wait_init:
ba599d4f
DP		 862 /* Handshake with the card before we register the devices. */
863 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
864 if (err) {
83ac51fa 865 netxen_free_dummy_dma(adapter);
db4cfd8a 866 goto err_out;
ba599d4f
DP		 867 }
868
68b3cae0
DP		 869 nx_update_dma_mask(adapter);
870
6a581e93 871 netxen_check_options(adapter);
68b3cae0 872
74c520da
AKS		 873 adapter->need_fw_reset = 0;
874
ec5c50cb 875 /* fall through and release firmware */
db4cfd8a
DP		 876
877err_out:
878 netxen_release_firmware(adapter);
879 return err;
ba599d4f
DP		 880}
881
9f5bc7f1
DP		 882static int
883netxen_nic_request_irq(struct netxen_adapter *adapter)
884{
885 irq_handler_t handler;
d8b100c5
DP		 886 struct nx_host_sds_ring *sds_ring;
887 int err, ring;
888
9f5bc7f1
DP		 889 unsigned long flags = IRQF_SAMPLE_RANDOM;
890 struct net_device *netdev = adapter->netdev;
d8b100c5 891 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 892
9f5bc7f1
DP		 893 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
894 handler = netxen_msix_intr;
895 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
896 handler = netxen_msi_intr;
897 else {
898 flags |= IRQF_SHARED;
899 handler = netxen_intr;
900 }
901 adapter->irq = netdev->irq;
902
d8b100c5
DP		 903 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
904 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 905 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 906 err = request_irq(sds_ring->irq, handler,
907 flags, sds_ring->name, sds_ring);
908 if (err)
909 return err;
910 }
911
912 return 0;
913}
914
915static void
916netxen_nic_free_irq(struct netxen_adapter *adapter)
917{
918 int ring;
919 struct nx_host_sds_ring *sds_ring;
920
921 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
922
923 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
924 sds_ring = &recv_ctx->sds_rings[ring];
925 free_irq(sds_ring->irq, sds_ring);
926 }
9f5bc7f1
DP		 927}
928
ca2ef330
DP		 929static void
930netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
931{
932 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
933 adapter->coal.normal.data.rx_time_us =
934 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
935 adapter->coal.normal.data.rx_packets =
936 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
937 adapter->coal.normal.data.tx_time_us =
938 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
939 adapter->coal.normal.data.tx_packets =
940 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
941}
942
9f5bc7f1
DP		 943static int
944netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
945{
946 int err;
947
db4cfd8a
DP		 948 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
949 return -EIO;
950
9f5bc7f1
DP		 951 err = adapter->init_port(adapter, adapter->physical_port);
952 if (err) {
953 printk(KERN_ERR "%s: Failed to initialize port %d\n",
954 netxen_nic_driver_name, adapter->portnum);
955 return err;
956 }
3d0a3cc9
DP		 957 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
958 adapter->macaddr_set(adapter, netdev->dev_addr);
9f5bc7f1 959
3d0a3cc9
DP		 960 adapter->set_multi(netdev);
961 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 962
963 adapter->ahw.linkup = 0;
9f5bc7f1 964
d8b100c5
DP		 965 if (adapter->max_sds_rings > 1)
966 netxen_config_rss(adapter, 1);
9f5bc7f1 967
ca2ef330
DP		 968 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
969 netxen_config_intr_coalesce(adapter);
970
1bb482f8
NK		 971 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
972 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
973
b2af9cb0
DP		 974 netxen_napi_enable(adapter);
975
5103c9f7 976 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 977 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 978 else
979 netxen_nic_set_link_parameters(adapter);
980
6a581e93 981 set_bit(__NX_DEV_UP, &adapter->state);
9f5bc7f1
DP		 982 return 0;
983}
984
985static void
986netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
987{
db4cfd8a
DP		 988 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
989 return;
990
6a581e93
DP		 991 clear_bit(__NX_DEV_UP, &adapter->state);
992
b2af9cb0 993 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 994 netif_carrier_off(netdev);
b2af9cb0 995 netif_tx_disable(netdev);
9f5bc7f1
DP		 996
997 if (adapter->stop_port)
998 adapter->stop_port(adapter);
999
5cf4d323
DP		 1000 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1001 netxen_p3_free_mac_list(adapter);
1002
22b5794b
AKS		 1003 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1004
be339aee
DP		 1005 netxen_napi_disable(adapter);
1006
9f5bc7f1 1007 netxen_release_tx_buffers(adapter);
b2af9cb0 1008 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1
DP		 1009}
1010
1011
1012static int
1013netxen_nic_attach(struct netxen_adapter *adapter)
1014{
1015 struct net_device *netdev = adapter->netdev;
1016 struct pci_dev *pdev = adapter->pdev;
becf46a0 1017 int err, ring;
d8b100c5 1018 struct nx_host_rds_ring *rds_ring;
d877f1e3 1019 struct nx_host_tx_ring *tx_ring;
9f5bc7f1 1020
7042cd8f
AKS		 1021 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1022 return 0;
1023
9f5bc7f1 1024 err = netxen_init_firmware(adapter);
232e7d68
DP		 1025 if (err)
1026 return err;
1027
1028 err = netxen_napi_add(adapter, netdev);
1029 if (err)
1030 return err;
9f5bc7f1 1031
9f5bc7f1
DP		 1032 err = netxen_alloc_sw_resources(adapter);
1033 if (err) {
1034 printk(KERN_ERR "%s: Error in setting sw resources\n",
1035 netdev->name);
1036 return err;
1037 }
1038
9f5bc7f1
DP		 1039 err = netxen_alloc_hw_resources(adapter);
1040 if (err) {
1041 printk(KERN_ERR "%s: Error in setting hw resources\n",
1042 netdev->name);
1043 goto err_out_free_sw;
1044 }
1045
4f96b988 1046 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
4ea528a1 1047 tx_ring = adapter->tx_ring;
195c5f98
AKS		 1048 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1049 crb_cmd_producer[adapter->portnum]);
1050 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1051 crb_cmd_consumer[adapter->portnum]);
9f5bc7f1 1052
cb2107be
DP		 1053 tx_ring->producer = 0;
1054 tx_ring->sw_consumer = 0;
1055
1056 netxen_nic_update_cmd_producer(adapter, tx_ring);
1057 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 1058 }
1059
d8b100c5
DP		 1060 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1061 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1062 netxen_post_rx_buffers(adapter, ring, rds_ring);
1063 }
9f5bc7f1
DP		 1064
1065 err = netxen_nic_request_irq(adapter);
1066 if (err) {
1067 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1068 netdev->name);
1069 goto err_out_free_rxbuf;
1070 }
1071
ca2ef330
DP		 1072 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1073 netxen_nic_init_coalesce_defaults(adapter);
1074
fa3ce355
NK		 1075 netxen_create_sysfs_entries(adapter);
1076
9f5bc7f1
DP		 1077 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1078 return 0;
1079
1080err_out_free_rxbuf:
1081 netxen_release_rx_buffers(adapter);
1082 netxen_free_hw_resources(adapter);
1083err_out_free_sw:
1084 netxen_free_sw_resources(adapter);
1085 return err;
1086}
1087
1088static void
1089netxen_nic_detach(struct netxen_adapter *adapter)
1090{
7042cd8f
AKS		 1091 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1092 return;
1093
fa3ce355
NK		 1094 netxen_remove_sysfs_entries(adapter);
1095
9f5bc7f1 1096 netxen_free_hw_resources(adapter);
cf981ffb 1097 netxen_release_rx_buffers(adapter);
be339aee 1098 netxen_nic_free_irq(adapter);
232e7d68 1099 netxen_napi_del(adapter);
9f5bc7f1
DP		 1100 netxen_free_sw_resources(adapter);
1101
1102 adapter->is_up = 0;
1103}
1104
7042cd8f
AKS		 1105int
1106netxen_nic_reset_context(struct netxen_adapter *adapter)
1107{
1108 int err = 0;
1109 struct net_device *netdev = adapter->netdev;
1110
6a581e93
DP		 1111 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1112 return -EBUSY;
1113
7042cd8f
AKS		 1114 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1115
6a581e93
DP		 1116 netif_device_detach(netdev);
1117
7042cd8f
AKS		 1118 if (netif_running(netdev))
1119 netxen_nic_down(adapter, netdev);
1120
1121 netxen_nic_detach(adapter);
1122
6a581e93
DP		 1123 if (netif_running(netdev)) {
1124 err = netxen_nic_attach(adapter);
1125 if (!err)
1126 err = netxen_nic_up(adapter, netdev);
7042cd8f 1127
6a581e93
DP		 1128 if (err)
1129 goto done;
1130 }
1131
1132 netif_device_attach(netdev);
7042cd8f 1133 }
6a581e93 1134
7042cd8f 1135done:
6a581e93 1136 clear_bit(__NX_RESETTING, &adapter->state);
7042cd8f
AKS		 1137 return err;
1138}
1139
f17443f4
DP		 1140static int
1141netxen_setup_netdev(struct netxen_adapter *adapter,
1142 struct net_device *netdev)
1143{
1144 int err = 0;
1145 struct pci_dev *pdev = adapter->pdev;
1146
1147 adapter->rx_csum = 1;
1148 adapter->mc_enabled = 0;
1149 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1150 adapter->max_mc_count = 38;
1151 else
1152 adapter->max_mc_count = 16;
1153
1154 netdev->netdev_ops = &netxen_netdev_ops;
1155 netdev->watchdog_timeo = 2*HZ;
1156
1157 netxen_nic_change_mtu(netdev, netdev->mtu);
1158
1159 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1160
1161 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1162 netdev->features |= (NETIF_F_GRO);
1163 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1164
1165 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1166 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1167 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1168 }
1169
1170 if (adapter->pci_using_dac) {
1171 netdev->features |= NETIF_F_HIGHDMA;
1172 netdev->vlan_features |= NETIF_F_HIGHDMA;
1173 }
1174
028afe71
DP		 1175 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1176 netdev->features |= (NETIF_F_HW_VLAN_TX);
1177
1bb482f8
NK		 1178 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1179 netdev->features |= NETIF_F_LRO;
1180
f17443f4
DP		 1181 netdev->irq = adapter->msix_entries[0].vector;
1182
74c520da 1183 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
f17443f4
DP		 1184
1185 if (netxen_read_mac_addr(adapter))
1186 dev_warn(&pdev->dev, "failed to read mac addr\n");
1187
1188 netif_carrier_off(netdev);
1189 netif_stop_queue(netdev);
1190
1191 err = register_netdev(netdev);
1192 if (err) {
1193 dev_err(&pdev->dev, "failed to register net device\n");
1194 return err;
1195 }
1196
1197 return 0;
1198}
1199
3d396eb1
AK		 1200static int __devinit
1201netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1202{
1203 struct net_device *netdev = NULL;
1204 struct netxen_adapter *adapter = NULL;
2956640d 1205 int i = 0, err;
3176ff3e 1206 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 1207 uint8_t revision_id;
3d396eb1 1208
3176ff3e 1209 if (pdev->class != 0x020000) {
dcd56fdb 1210 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 1211 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 1212 return -ENODEV;
1213 }
2956640d 1214
11d89d63
DP		 1215 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1216 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1217 "will not be enabled.\n",
1218 NX_P3_A0, NX_P3_B1);
1219 return -ENODEV;
1220 }
1221
3d396eb1
AK		 1222 if ((err = pci_enable_device(pdev)))
1223 return err;
2956640d 1224
3d396eb1
AK		 1225 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1226 err = -ENODEV;
1227 goto err_out_disable_pdev;
1228 }
1229
1230 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1231 goto err_out_disable_pdev;
1232
1233 pci_set_master(pdev);
3176ff3e
MT		 1234
1235 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1236 if(!netdev) {
f17443f4
DP		 1237 dev_err(&pdev->dev, "failed to allocate net_device\n");
1238 err = -ENOMEM;
3176ff3e
MT		 1239 goto err_out_free_res;
1240 }
1241
3176ff3e
MT		 1242 SET_NETDEV_DEV(netdev, &pdev->dev);
1243
4cf1653a 1244 adapter = netdev_priv(netdev);
2956640d
DP		 1245 adapter->netdev = netdev;
1246 adapter->pdev = pdev;
13ba9c77 1247 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1248
1249 revision_id = pdev->revision;
1250 adapter->ahw.revision_id = revision_id;
1251
f03b0ebd
DP		 1252 rwlock_init(&adapter->ahw.crb_lock);
1253 spin_lock_init(&adapter->ahw.mem_lock);
1254
d8b100c5 1255 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1256 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1257
97daee83
DP		 1258 err = netxen_setup_pci_map(adapter);
1259 if (err)
6c80b18d 1260 goto err_out_free_netdev;
3d396eb1 1261
2d1a3bbd 1262 /* This will be reset for mezz cards */
3176ff3e 1263 adapter->portnum = pci_func_id;
3176ff3e 1264
f17443f4
DP		 1265 err = netxen_nic_get_board_info(adapter);
1266 if (err) {
1267 dev_err(&pdev->dev, "Error getting board config info.\n");
dcd56fdb
DP		 1268 goto err_out_iounmap;
1269 }
6c80b18d 1270
13ba9c77 1271 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1272 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1273 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1274 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1275 if (pci_func_id >= 2)
13ba9c77 1276 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1277 break;
1278 default:
1279 break;
1280 }
13ba9c77 1281
6a581e93 1282 err = netxen_start_firmware(adapter);
0b72e659
DP		 1283 if (err)
1284 goto err_out_iounmap;
f17443f4 1285
3d396eb1 1286 /*
6c80b18d 1287 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1288 */
dcd56fdb 1289 adapter->physical_port = adapter->portnum;
4f96b988 1290 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
f98a9f69 1291 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1292 if (i != 0x55555555)
1293 adapter->physical_port = i;
1294 }
6c80b18d 1295
6a581e93 1296 netxen_nic_clear_stats(adapter);
2956640d 1297
97daee83 1298 netxen_setup_intr(adapter);
2956640d 1299
f17443f4 1300 err = netxen_setup_netdev(adapter, netdev);
9dc28efe 1301 if (err)
2956640d 1302 goto err_out_disable_msi;
6c80b18d
MT		 1303
1304 pci_set_drvdata(pdev, adapter);
3d396eb1 1305
6a581e93
DP		 1306 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1307
1e2d0059 1308 switch (adapter->ahw.port_type) {
2956640d
DP		 1309 case NETXEN_NIC_GBE:
1310 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1311 adapter->netdev->name);
1312 break;
1313 case NETXEN_NIC_XGBE:
1314 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1315 adapter->netdev->name);
1316 break;
3d396eb1 1317 }
3d396eb1 1318
70f9cf89
DP		 1319 netxen_create_diag_entries(adapter);
1320
2956640d
DP		 1321 return 0;
1322
1323err_out_disable_msi:
97daee83 1324 netxen_teardown_intr(adapter);
6c80b18d 1325
83ac51fa 1326 netxen_free_dummy_dma(adapter);
3d396eb1 1327
6a581e93
DP		 1328 nx_decr_dev_ref_cnt(adapter);
1329
2956640d 1330err_out_iounmap:
97daee83 1331 netxen_cleanup_pci_map(adapter);
cb8011ad 1332
6c80b18d
MT		 1333err_out_free_netdev:
1334 free_netdev(netdev);
1335
1336err_out_free_res:
3d396eb1 1337 pci_release_regions(pdev);
6c80b18d
MT		 1338
1339err_out_disable_pdev:
2956640d 1340 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1341 pci_disable_device(pdev);
1342 return err;
1343}
1344
1345static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1346{
1347 struct netxen_adapter *adapter;
3176ff3e 1348 struct net_device *netdev;
3d396eb1 1349
6c80b18d 1350 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1351 if (adapter == NULL)
1352 return;
1353
6c80b18d
MT		 1354 netdev = adapter->netdev;
1355
6a581e93
DP		 1356 netxen_cancel_fw_work(adapter);
1357
96acb6eb
DP		 1358 unregister_netdev(netdev);
1359
e424fa9d
AKS		 1360 cancel_work_sync(&adapter->tx_timeout_task);
1361
7042cd8f 1362 netxen_nic_detach(adapter);
3d396eb1 1363
6a581e93
DP		 1364 nx_decr_dev_ref_cnt(adapter);
1365
439b454e 1366 if (adapter->portnum == 0)
83ac51fa 1367 netxen_free_dummy_dma(adapter);
96acb6eb 1368
6a581e93
DP		 1369 clear_bit(__NX_RESETTING, &adapter->state);
1370
97daee83 1371 netxen_teardown_intr(adapter);
3052246c 1372
70f9cf89
DP		 1373 netxen_remove_diag_entries(adapter);
1374
97daee83 1375 netxen_cleanup_pci_map(adapter);
595e3fb8 1376
f7185c71
DP		 1377 netxen_release_firmware(adapter);
1378
595e3fb8 1379 pci_release_regions(pdev);
3052246c 1380 pci_disable_device(pdev);
595e3fb8
MT		 1381 pci_set_drvdata(pdev, NULL);
1382
6c80b18d 1383 free_netdev(netdev);
3d396eb1 1384}
22b5794b 1385static int __netxen_nic_shutdown(struct pci_dev *pdev)
0b72e659 1386{
0b72e659
DP		 1387 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1388 struct net_device *netdev = adapter->netdev;
22b5794b 1389 int retval;
0b72e659
DP		 1390
1391 netif_device_detach(netdev);
1392
6a581e93
DP		 1393 netxen_cancel_fw_work(adapter);
1394
0b72e659
DP		 1395 if (netif_running(netdev))
1396 netxen_nic_down(adapter, netdev);
1397
e424fa9d
AKS		 1398 cancel_work_sync(&adapter->tx_timeout_task);
1399
7042cd8f 1400 netxen_nic_detach(adapter);
0b72e659 1401
22b5794b
AKS		 1402 if (adapter->portnum == 0)
1403 netxen_free_dummy_dma(adapter);
1404
6a581e93
DP		 1405 nx_decr_dev_ref_cnt(adapter);
1406
1407 clear_bit(__NX_RESETTING, &adapter->state);
1408
22b5794b
AKS		 1409 retval = pci_save_state(pdev);
1410 if (retval)
1411 return retval;
0b72e659
DP		 1412
1413 if (netxen_nic_wol_supported(adapter)) {
1414 pci_enable_wake(pdev, PCI_D3cold, 1);
1415 pci_enable_wake(pdev, PCI_D3hot, 1);
1416 }
1417
1418 pci_disable_device(pdev);
0b72e659
DP		 1419
1420 return 0;
1421}
22b5794b
AKS		 1422static void netxen_nic_shutdown(struct pci_dev *pdev)
1423{
1424 if (__netxen_nic_shutdown(pdev))
1425 return;
1426}
1427#ifdef CONFIG_PM
1428static int
1429netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1430{
1431 int retval;
1432
1433 retval = __netxen_nic_shutdown(pdev);
1434 if (retval)
1435 return retval;
1436
1437 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1438 return 0;
1439}
0b72e659
DP		 1440
1441static int
1442netxen_nic_resume(struct pci_dev *pdev)
1443{
1444 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1445 struct net_device *netdev = adapter->netdev;
1446 int err;
1447
1448 pci_set_power_state(pdev, PCI_D0);
1449 pci_restore_state(pdev);
1450
1451 err = pci_enable_device(pdev);
1452 if (err)
1453 return err;
1454
907fa120 1455 adapter->ahw.crb_win = -1;
47abe356 1456 adapter->ahw.ocm_win = -1;
0b72e659 1457
6a581e93 1458 err = netxen_start_firmware(adapter);
0b72e659
DP		 1459 if (err) {
1460 dev_err(&pdev->dev, "failed to start firmware\n");
1461 return err;
1462 }
1463
1464 if (netif_running(netdev)) {
1465 err = netxen_nic_attach(adapter);
1466 if (err)
6a581e93 1467 goto err_out;
0b72e659
DP		 1468
1469 err = netxen_nic_up(adapter, netdev);
1470 if (err)
6a581e93 1471 goto err_out_detach;
0b72e659
DP		 1472
1473 netif_device_attach(netdev);
d0725e4d
AKS		 1474
1475 netxen_config_indev_addr(netdev, NETDEV_UP);
0b72e659
DP		 1476 }
1477
6a581e93 1478 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
07653aa3 1479 return 0;
6a581e93
DP		 1480
1481err_out_detach:
1482 netxen_nic_detach(adapter);
1483err_out:
1484 nx_decr_dev_ref_cnt(adapter);
1485 return err;
0b72e659 1486}
01542cd1 1487#endif
0b72e659 1488
3d396eb1
AK		 1489static int netxen_nic_open(struct net_device *netdev)
1490{
4cf1653a 1491 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1492 int err = 0;
3d396eb1 1493
dcd56fdb
DP		 1494 if (adapter->driver_mismatch)
1495 return -EIO;
1496
7042cd8f
AKS		 1497 err = netxen_nic_attach(adapter);
1498 if (err)
1499 return err;
2956640d 1500
9f5bc7f1
DP		 1501 err = netxen_nic_up(adapter, netdev);
1502 if (err)
1503 goto err_out;
05aaa02d 1504
dcd56fdb 1505 netif_start_queue(netdev);
3d396eb1
AK		 1506
1507 return 0;
2956640d 1508
9f5bc7f1
DP		 1509err_out:
1510 netxen_nic_detach(adapter);
2956640d 1511 return err;
3d396eb1
AK		 1512}
1513
1514/*
1515 * netxen_nic_close - Disables a network interface entry point
1516 */
1517static int netxen_nic_close(struct net_device *netdev)
1518{
3176ff3e 1519 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1520
9f5bc7f1 1521 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1522 return 0;
1523}
1524
1bcfd790
DP		 1525static void
1526netxen_tso_check(struct net_device *netdev,
1527 struct nx_host_tx_ring *tx_ring,
1528 struct cmd_desc_type0 *first_desc,
1529 struct sk_buff *skb)
cd1f8160 1530{
391587c3 1531 u8 opcode = TX_ETHER_PKT;
cdff1036 1532 __be16 protocol = skb->protocol;
028afe71 1533 u16 flags = 0, vid = 0;
1bcfd790 1534 u32 producer;
028afe71 1535 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1bcfd790 1536 struct cmd_desc_type0 *hwdesc;
028afe71 1537 struct vlan_ethhdr *vh;
cdff1036 1538
09640e63 1539 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
028afe71
DP		 1540
1541 vh = (struct vlan_ethhdr *)skb->data;
cdff1036
DP		 1542 protocol = vh->h_vlan_encapsulated_proto;
1543 flags = FLAGS_VLAN_TAGGED;
028afe71
DP		 1544
1545 } else if (vlan_tx_tag_present(skb)) {
1546
1547 flags = FLAGS_VLAN_OOB;
1548 vid = vlan_tx_tag_get(skb);
1549 netxen_set_tx_vlan_tci(first_desc, vid);
1550 vlan_oob = 1;
cdff1036 1551 }
cd1f8160 1552
391587c3
DP		 1553 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1554 skb_shinfo(skb)->gso_size > 0) {
1555
1bcfd790
DP		 1556 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1557
1558 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1559 first_desc->total_hdr_length = hdr_len;
028afe71
DP		 1560 if (vlan_oob) {
1561 first_desc->total_hdr_length += VLAN_HLEN;
1562 first_desc->tcp_hdr_offset = VLAN_HLEN;
1563 first_desc->ip_hdr_offset = VLAN_HLEN;
1564 /* Only in case of TSO on vlan device */
1565 flags |= FLAGS_VLAN_TAGGED;
1566 }
391587c3 1567
09640e63 1568 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3 1569 TX_TCP_LSO6 : TX_TCP_LSO;
1bcfd790 1570 tso = 1;
cd1f8160
DP		 1571
1572 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1573 u8 l4proto;
1574
09640e63 1575 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1576 l4proto = ip_hdr(skb)->protocol;
1577
1578 if (l4proto == IPPROTO_TCP)
1579 opcode = TX_TCP_PKT;
1580 else if(l4proto == IPPROTO_UDP)
1581 opcode = TX_UDP_PKT;
09640e63 1582 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1583 l4proto = ipv6_hdr(skb)->nexthdr;
1584
1585 if (l4proto == IPPROTO_TCP)
1586 opcode = TX_TCPV6_PKT;
1587 else if(l4proto == IPPROTO_UDP)
1588 opcode = TX_UDPV6_PKT;
1589 }
cd1f8160 1590 }
028afe71
DP		 1591
1592 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1593 first_desc->ip_hdr_offset += skb_network_offset(skb);
1bcfd790
DP		 1594 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1595
1596 if (!tso)
1597 return;
1598
1599 /* For LSO, we need to copy the MAC/IP/TCP headers into
1600 * the descriptor ring
1601 */
1602 producer = tx_ring->producer;
1603 copied = 0;
1604 offset = 2;
1605
028afe71
DP		 1606 if (vlan_oob) {
1607 /* Create a TSO vlan header template for firmware */
1608
1609 hwdesc = &tx_ring->desc_head[producer];
1610 tx_ring->cmd_buf_arr[producer].skb = NULL;
1611
1612 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1613 hdr_len + VLAN_HLEN);
1614
1615 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1616 skb_copy_from_linear_data(skb, vh, 12);
1617 vh->h_vlan_proto = htons(ETH_P_8021Q);
1618 vh->h_vlan_TCI = htons(vid);
1619 skb_copy_from_linear_data_offset(skb, 12,
1620 (char *)vh + 16, copy_len - 16);
1621
545eb370 1622 copied = copy_len - VLAN_HLEN;
028afe71
DP		 1623 offset = 0;
1624
1625 producer = get_next_index(producer, tx_ring->num_desc);
1626 }
1627
1bcfd790
DP		 1628 while (copied < hdr_len) {
1629
1630 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1631 (hdr_len - copied));
1632
1633 hwdesc = &tx_ring->desc_head[producer];
1634 tx_ring->cmd_buf_arr[producer].skb = NULL;
1635
1636 skb_copy_from_linear_data_offset(skb, copied,
1637 (char *)hwdesc + offset, copy_len);
1638
1639 copied += copy_len;
1640 offset = 0;
1641
1642 producer = get_next_index(producer, tx_ring->num_desc);
1643 }
1644
1645 tx_ring->producer = producer;
1646 barrier();
cd1f8160
DP		 1647}
1648
ce644ed4
DP		 1649static int
1650netxen_map_tx_skb(struct pci_dev *pdev,
1651 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
6f703406 1652{
ce644ed4
DP		 1653 struct netxen_skb_frag *nf;
1654 struct skb_frag_struct *frag;
1655 int i, nr_frags;
1656 dma_addr_t map;
1657
1658 nr_frags = skb_shinfo(skb)->nr_frags;
1659 nf = &pbuf->frag_array[0];
1660
1661 map = pci_map_single(pdev, skb->data,
1662 skb_headlen(skb), PCI_DMA_TODEVICE);
1663 if (pci_dma_mapping_error(pdev, map))
1664 goto out_err;
6f703406 1665
ce644ed4
DP		 1666 nf->dma = map;
1667 nf->length = skb_headlen(skb);
1668
1669 for (i = 0; i < nr_frags; i++) {
1670 frag = &skb_shinfo(skb)->frags[i];
1671 nf = &pbuf->frag_array[i+1];
1672
1673 map = pci_map_page(pdev, frag->page, frag->page_offset,
1674 frag->size, PCI_DMA_TODEVICE);
1675 if (pci_dma_mapping_error(pdev, map))
1676 goto unwind;
1677
1678 nf->dma = map;
1679 nf->length = frag->size;
1680 }
1681
1682 return 0;
6f703406 1683
ce644ed4 1684unwind:
cf503e8f
DP		 1685 while (--i >= 0) {
1686 nf = &pbuf->frag_array[i+1];
ce644ed4 1687 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
6f703406 1688 }
ce644ed4
DP		 1689
1690 nf = &pbuf->frag_array[0];
1691 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1692
1693out_err:
1694 return -ENOMEM;
6f703406
DP		 1695}
1696
d32cc3d2
DP		 1697static inline void
1698netxen_clear_cmddesc(u64 *desc)
1699{
1bcfd790
DP		 1700 desc[0] = 0ULL;
1701 desc[2] = 0ULL;
d32cc3d2
DP		 1702}
1703
61357325 1704static netdev_tx_t
d32cc3d2 1705netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1706{
3176ff3e 1707 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1708 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
391587c3 1709 struct netxen_cmd_buffer *pbuf;
3d396eb1 1710 struct netxen_skb_frag *buffrag;
1bcfd790
DP		 1711 struct cmd_desc_type0 *hwdesc, *first_desc;
1712 struct pci_dev *pdev;
391587c3 1713 int i, k;
3d396eb1 1714
cb2107be 1715 u32 producer;
ce644ed4 1716 int frag_count, no_of_desc;
d877f1e3 1717 u32 num_txd = tx_ring->num_desc;
3d396eb1 1718
3d396eb1
AK		 1719 frag_count = skb_shinfo(skb)->nr_frags + 1;
1720
d877f1e3 1721 /* 4 fragments per cmd des */
3d396eb1 1722 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1723
fa9859ef 1724 if (unlikely(no_of_desc + 2 > netxen_tx_avail(tx_ring))) {
ba53e6b4 1725 netif_stop_queue(netdev);
ba53e6b4 1726 return NETDEV_TX_BUSY;
53a01e00 1727 }
3d396eb1 1728
cb2107be 1729 producer = tx_ring->producer;
ce644ed4 1730 pbuf = &tx_ring->cmd_buf_arr[producer];
cb2107be 1731
1bcfd790 1732 pdev = adapter->pdev;
391587c3 1733
ce644ed4 1734 if (netxen_map_tx_skb(pdev, skb, pbuf))
1bcfd790 1735 goto drop_packet;
391587c3 1736
3d396eb1 1737 pbuf->skb = skb;
3d396eb1 1738 pbuf->frag_count = frag_count;
6f703406 1739
1bcfd790
DP		 1740 first_desc = hwdesc = &tx_ring->desc_head[producer];
1741 netxen_clear_cmddesc((u64 *)hwdesc);
3d396eb1 1742
ce644ed4
DP		 1743 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1744 netxen_set_tx_port(first_desc, adapter->portnum);
3d396eb1 1745
ce644ed4 1746 for (i = 0; i < frag_count; i++) {
3d396eb1 1747
ce644ed4
DP		 1748 k = i % 4;
1749
1750 if ((k == 0) && (i > 0)) {
1751 /* move to next desc.*/
ba53e6b4 1752 producer = get_next_index(producer, num_txd);
d877f1e3 1753 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1754 netxen_clear_cmddesc((u64 *)hwdesc);
ce644ed4 1755 tx_ring->cmd_buf_arr[producer].skb = NULL;
6f703406 1756 }
3d396eb1 1757
ce644ed4 1758 buffrag = &pbuf->frag_array[i];
3d396eb1 1759
ce644ed4 1760 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
3d396eb1
AK		 1761 switch (k) {
1762 case 0:
ce644ed4 1763 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1764 break;
1765 case 1:
ce644ed4 1766 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1767 break;
1768 case 2:
ce644ed4 1769 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1770 break;
1771 case 3:
ce644ed4 1772 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1773 break;
1774 }
3d396eb1 1775 }
ce644ed4 1776
1bcfd790 1777 tx_ring->producer = get_next_index(producer, num_txd);
3d396eb1 1778
1bcfd790 1779 netxen_tso_check(netdev, tx_ring, first_desc, skb);
6c80b18d 1780
cb2107be 1781 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1782
1bcfd790 1783 adapter->stats.txbytes += skb->len;
ba53e6b4 1784 adapter->stats.xmitcalled++;
3d396eb1 1785
3d396eb1 1786 return NETDEV_TX_OK;
6f703406
DP		 1787
1788drop_packet:
1789 adapter->stats.txdropped++;
1790 dev_kfree_skb_any(skb);
1791 return NETDEV_TX_OK;
3d396eb1
AK		 1792}
1793
a97342f9
DP		 1794static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1795{
1796 struct net_device *netdev = adapter->netdev;
1797 uint32_t temp, temp_state, temp_val;
1798 int rv = 0;
1799
f98a9f69 1800 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1801
1802 temp_state = nx_get_temp_state(temp);
1803 temp_val = nx_get_temp_val(temp);
1804
1805 if (temp_state == NX_TEMP_PANIC) {
1806 printk(KERN_ALERT
1807 "%s: Device temperature %d degrees C exceeds"
1808 " maximum allowed. Hardware has been shut down.\n",
e4135c2d 1809 netdev->name, temp_val);
a97342f9
DP		 1810 rv = 1;
1811 } else if (temp_state == NX_TEMP_WARN) {
1812 if (adapter->temp == NX_TEMP_NORMAL) {
1813 printk(KERN_ALERT
1814 "%s: Device temperature %d degrees C "
1815 "exceeds operating range."
1816 " Immediate action needed.\n",
e4135c2d 1817 netdev->name, temp_val);
a97342f9
DP		 1818 }
1819 } else {
1820 if (adapter->temp == NX_TEMP_WARN) {
1821 printk(KERN_INFO
1822 "%s: Device temperature is now %d degrees C"
e4135c2d 1823 " in normal range.\n", netdev->name,
a97342f9
DP		 1824 temp_val);
1825 }
1826 }
1827 adapter->temp = temp_state;
1828 return rv;
1829}
1830
3bf26ce3 1831void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1832{
1833 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1834
1835 if (adapter->ahw.linkup && !linkup) {
1836 printk(KERN_INFO "%s: %s NIC Link is down\n",
1837 netxen_nic_driver_name, netdev->name);
1838 adapter->ahw.linkup = 0;
1839 if (netif_running(netdev)) {
1840 netif_carrier_off(netdev);
1841 netif_stop_queue(netdev);
1842 }
e424fa9d 1843 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1844 } else if (!adapter->ahw.linkup && linkup) {
1845 printk(KERN_INFO "%s: %s NIC Link is up\n",
1846 netxen_nic_driver_name, netdev->name);
1847 adapter->ahw.linkup = 1;
1848 if (netif_running(netdev)) {
1849 netif_carrier_on(netdev);
1850 netif_wake_queue(netdev);
1851 }
e424fa9d 1852 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1853 }
1854}
1855
3bf26ce3
DP		 1856static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1857{
1858 u32 val, port, linkup;
1859
1860 port = adapter->physical_port;
1861
1862 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1863 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1864 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1865 linkup = (val == XG_LINK_UP_P3);
1866 } else {
f98a9f69 1867 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1868 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1869 linkup = (val >> port) & 1;
1870 else {
1871 val = (val >> port*8) & 0xff;
1872 linkup = (val == XG_LINK_UP);
1873 }
1874 }
1875
1876 netxen_advert_link_change(adapter, linkup);
1877}
1878
3d396eb1
AK		 1879static void netxen_tx_timeout(struct net_device *netdev)
1880{
e424fa9d 1881 struct netxen_adapter *adapter = netdev_priv(netdev);
f17443f4 1882
6a581e93
DP		 1883 if (test_bit(__NX_RESETTING, &adapter->state))
1884 return;
1885
f17443f4 1886 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
e424fa9d 1887 schedule_work(&adapter->tx_timeout_task);
3d396eb1
AK		 1888}
1889
74c520da 1890static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1891{
4790654c 1892 struct netxen_adapter *adapter =
3176ff3e 1893 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1894
b2af9cb0
DP		 1895 if (!netif_running(adapter->netdev))
1896 return;
1897
74c520da 1898 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
6a581e93
DP		 1899 return;
1900
74c520da
AKS		 1901 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
1902 goto request_reset;
1903
1904 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1905 /* try to scrub interrupt */
1906 netxen_napi_disable(adapter);
ba53e6b4 1907
74c520da 1908 adapter->netdev->trans_start = jiffies;
ba53e6b4 1909
74c520da
AKS		 1910 netxen_napi_enable(adapter);
1911
1912 netif_wake_queue(adapter->netdev);
1913
a598ae17 1914 clear_bit(__NX_RESETTING, &adapter->state);
74c520da
AKS		 1915
1916 } else {
a598ae17 1917 clear_bit(__NX_RESETTING, &adapter->state);
74c520da
AKS		 1918 if (!netxen_nic_reset_context(adapter)) {
1919 adapter->netdev->trans_start = jiffies;
a598ae17 1920 return;
74c520da
AKS		 1921 }
1922
1923 /* context reset failed, fall through for fw reset */
1924 }
1925
1926request_reset:
1927 adapter->need_fw_reset = 1;
ff8a306d 1928 clear_bit(__NX_RESETTING, &adapter->state);
3d396eb1
AK		 1929}
1930
a97342f9
DP		 1931struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1932{
1933 struct netxen_adapter *adapter = netdev_priv(netdev);
5a4d6311 1934 struct net_device_stats *stats = &netdev->stats;
a97342f9
DP		 1935
1936 memset(stats, 0, sizeof(*stats));
1937
1bb482f8 1938 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
e98e3350 1939 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1940 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1941 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1942 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1943 stats->tx_dropped = adapter->stats.txdropped;
1944
1945 return stats;
1946}
1947
e4c93c81 1948static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1949{
d8b100c5
DP		 1950 struct nx_host_sds_ring *sds_ring = data;
1951 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1952 u32 status = 0;
1953
195c5f98 1954 status = readl(adapter->isr_int_vec);
d71e1be8 1955
195c5f98 1956 if (!(status & adapter->int_vec_bit))
05aaa02d 1957 return IRQ_NONE;
e01872af 1958
195c5f98 1959 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
d71e1be8 1960 /* check interrupt state machine, to be sure */
195c5f98 1961 status = readl(adapter->crb_int_state_reg);
d71e1be8
DP		 1962 if (!ISR_LEGACY_INT_TRIGGERED(status))
1963 return IRQ_NONE;
1964
092bc571
DP		 1965 } else {
1966 unsigned long our_int = 0;
d71e1be8 1967
195c5f98 1968 our_int = readl(adapter->crb_int_state_reg);
092bc571 1969
d71e1be8 1970 /* not our interrupt */
092bc571 1971 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1972 return IRQ_NONE;
1973
092bc571 1974 /* claim interrupt */
195c5f98 1975 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
e01872af 1976
195c5f98 1977 /* clear interrupt */
d8b100c5 1978 netxen_nic_disable_int(sds_ring);
195c5f98 1979 }
092bc571 1980
195c5f98 1981 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 1982 /* read twice to ensure write is flushed */
195c5f98
AKS		 1983 readl(adapter->isr_int_vec);
1984 readl(adapter->isr_int_vec);
092bc571 1985
d8b100c5 1986 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1987
1988 return IRQ_HANDLED;
1989}
1990
e4c93c81 1991static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1992{
d8b100c5
DP		 1993 struct nx_host_sds_ring *sds_ring = data;
1994 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1995
092bc571 1996 /* clear interrupt */
195c5f98 1997 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 1998
d8b100c5 1999 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 2000 return IRQ_HANDLED;
2001}
2002
b3df68f8
DP		 2003static irqreturn_t netxen_msix_intr(int irq, void *data)
2004{
d8b100c5 2005 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 2006
d8b100c5 2007 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 2008 return IRQ_HANDLED;
2009}
2010
bea3348e 2011static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 2012{
d8b100c5
DP		 2013 struct nx_host_sds_ring *sds_ring =
2014 container_of(napi, struct nx_host_sds_ring, napi);
2015
2016 struct netxen_adapter *adapter = sds_ring->adapter;
2017
05aaa02d 2018 int tx_complete;
bea3348e 2019 int work_done;
3d396eb1 2020
05aaa02d 2021 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 2022
d8b100c5 2023 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 2024
05aaa02d 2025 if ((work_done < budget) && tx_complete) {
d8b100c5 2026 napi_complete(&sds_ring->napi);
b2af9cb0
DP		 2027 if (netif_running(adapter->netdev))
2028 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 2029 }
2030
bea3348e 2031 return work_done;
3d396eb1
AK		 2032}
2033
2034#ifdef CONFIG_NET_POLL_CONTROLLER
2035static void netxen_nic_poll_controller(struct net_device *netdev)
2036{
3176ff3e 2037 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 2038 disable_irq(adapter->irq);
1494a814 2039 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 2040 enable_irq(adapter->irq);
2041}
2042#endif
3d396eb1 2043
6a581e93
DP		 2044static int
2045nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2046{
2047 int count;
2048 if (netxen_api_lock(adapter))
2049 return -EIO;
2050
2051 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2052
2053 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2054
2055 netxen_api_unlock(adapter);
2056 return count;
2057}
2058
2059static int
2060nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2061{
2062 int count;
2063 if (netxen_api_lock(adapter))
2064 return -EIO;
2065
2066 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2067 WARN_ON(count == 0);
2068
2069 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2070
2071 if (count == 0)
2072 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2073
2074 netxen_api_unlock(adapter);
2075 return count;
2076}
2077
74c520da
AKS		 2078static void
2079nx_dev_request_reset(struct netxen_adapter *adapter)
2080{
2081 u32 state;
2082
2083 if (netxen_api_lock(adapter))
2084 return;
2085
2086 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2087
2088 if (state != NX_DEV_INITALIZING)
2089 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2090
2091 netxen_api_unlock(adapter);
2092}
2093
6a581e93
DP		 2094static int
2095netxen_can_start_firmware(struct netxen_adapter *adapter)
2096{
2097 int count;
2098 int can_start = 0;
2099
2100 if (netxen_api_lock(adapter))
2101 return 0;
2102
2103 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2104
2105 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2106 count = 0;
2107
2108 if (count == 0) {
2109 can_start = 1;
2110 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2111 }
2112
2113 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2114
2115 netxen_api_unlock(adapter);
2116
2117 return can_start;
2118}
2119
2120static void
2121netxen_schedule_work(struct netxen_adapter *adapter,
2122 work_func_t func, int delay)
2123{
2124 INIT_DELAYED_WORK(&adapter->fw_work, func);
2125 schedule_delayed_work(&adapter->fw_work, delay);
2126}
2127
2128static void
2129netxen_cancel_fw_work(struct netxen_adapter *adapter)
2130{
2131 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2132 msleep(10);
2133
2134 cancel_delayed_work_sync(&adapter->fw_work);
2135}
2136
2137static void
2138netxen_attach_work(struct work_struct *work)
2139{
2140 struct netxen_adapter *adapter = container_of(work,
2141 struct netxen_adapter, fw_work.work);
2142 struct net_device *netdev = adapter->netdev;
2143 int err = 0;
2144
2145 if (netif_running(netdev)) {
2146 err = netxen_nic_attach(adapter);
2147 if (err)
2148 goto done;
2149
2150 err = netxen_nic_up(adapter, netdev);
2151 if (err) {
2152 netxen_nic_detach(adapter);
2153 goto done;
2154 }
2155
d0725e4d 2156 netxen_config_indev_addr(netdev, NETDEV_UP);
6a581e93
DP		 2157 }
2158
2159 netif_device_attach(netdev);
2160
2161done:
2162 adapter->fw_fail_cnt = 0;
2163 clear_bit(__NX_RESETTING, &adapter->state);
2164 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2165}
2166
2167static void
2168netxen_fwinit_work(struct work_struct *work)
2169{
2170 struct netxen_adapter *adapter = container_of(work,
2171 struct netxen_adapter, fw_work.work);
2172 int dev_state;
2173
2174 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2175
2176 switch (dev_state) {
2177 case NX_DEV_COLD:
2178 case NX_DEV_READY:
74c520da
AKS		 2179 if (!netxen_start_firmware(adapter)) {
2180 netxen_schedule_work(adapter, netxen_attach_work, 0);
2181 return;
2182 }
2183 break;
6a581e93
DP		 2184
2185 case NX_DEV_INITALIZING:
2186 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2187 netxen_schedule_work(adapter,
2188 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2189 return;
2190 }
2191 break;
2192
2193 case NX_DEV_FAILED:
2194 default:
2195 break;
2196 }
2197
2198 nx_incr_dev_ref_cnt(adapter);
2199 clear_bit(__NX_RESETTING, &adapter->state);
2200}
2201
2202static void
2203netxen_detach_work(struct work_struct *work)
2204{
2205 struct netxen_adapter *adapter = container_of(work,
2206 struct netxen_adapter, fw_work.work);
2207 struct net_device *netdev = adapter->netdev;
2208 int ref_cnt, delay;
2209 u32 status;
2210
2211 netif_device_detach(netdev);
2212
2213 if (netif_running(netdev))
2214 netxen_nic_down(adapter, netdev);
2215
2216 netxen_nic_detach(adapter);
2217
2218 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2219
2220 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2221
2222 if (status & NX_RCODE_FATAL_ERROR)
2223 return;
2224
2225 if (adapter->temp == NX_TEMP_PANIC)
2226 return;
2227
2228 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2229
2230 adapter->fw_wait_cnt = 0;
2231 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2232}
2233
2234static int
2235netxen_check_health(struct netxen_adapter *adapter)
2236{
2237 u32 state, heartbit;
2238 struct net_device *netdev = adapter->netdev;
2239
2240 if (netxen_nic_check_temp(adapter))
2241 goto detach;
2242
74c520da
AKS		 2243 if (adapter->need_fw_reset) {
2244 nx_dev_request_reset(adapter);
2245 goto detach;
2246 }
2247
6a581e93
DP		 2248 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2249 if (state == NX_DEV_NEED_RESET)
2250 goto detach;
2251
2252 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2253 return 0;
2254
2255 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2256 if (heartbit != adapter->heartbit) {
2257 adapter->heartbit = heartbit;
2258 adapter->fw_fail_cnt = 0;
2259 return 0;
2260 }
2261
2262 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2263 return 0;
2264
2265 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2266
2267 dev_info(&netdev->dev, "firmware hang detected\n");
2268
2269detach:
caa2dd53
NK		 2270 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2271 !test_and_set_bit(__NX_RESETTING, &adapter->state))
6a581e93
DP		 2272 netxen_schedule_work(adapter, netxen_detach_work, 0);
2273 return 1;
2274}
2275
2276static void
2277netxen_fw_poll_work(struct work_struct *work)
2278{
2279 struct netxen_adapter *adapter = container_of(work,
2280 struct netxen_adapter, fw_work.work);
2281
2282 if (test_bit(__NX_RESETTING, &adapter->state))
2283 goto reschedule;
2284
2285 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2286 if (!adapter->has_link_events) {
2287
2288 netxen_nic_handle_phy_intr(adapter);
2289
2290 if (adapter->link_changed)
2291 netxen_nic_set_link_parameters(adapter);
2292 }
2293 }
2294
2295 if (netxen_check_health(adapter))
2296 return;
2297
2298reschedule:
2299 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2300}
2301
fa3ce355
NK		 2302static ssize_t
2303netxen_store_bridged_mode(struct device *dev,
2304 struct device_attribute *attr, const char *buf, size_t len)
2305{
2306 struct net_device *net = to_net_dev(dev);
2307 struct netxen_adapter *adapter = netdev_priv(net);
2308 unsigned long new;
2309 int ret = -EINVAL;
2310
2311 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2312 goto err_out;
2313
2314 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2315 goto err_out;
2316
2317 if (strict_strtoul(buf, 2, &new))
2318 goto err_out;
2319
2320 if (!netxen_config_bridged_mode(adapter, !!new))
2321 ret = len;
2322
2323err_out:
2324 return ret;
2325}
2326
2327static ssize_t
2328netxen_show_bridged_mode(struct device *dev,
2329 struct device_attribute *attr, char *buf)
2330{
2331 struct net_device *net = to_net_dev(dev);
2332 struct netxen_adapter *adapter;
2333 int bridged_mode = 0;
2334
2335 adapter = netdev_priv(net);
2336
2337 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2338 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2339
2340 return sprintf(buf, "%d\n", bridged_mode);
2341}
2342
2343static struct device_attribute dev_attr_bridged_mode = {
2344 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2345 .show = netxen_show_bridged_mode,
2346 .store = netxen_store_bridged_mode,
2347};
2348
70f9cf89
DP		 2349static ssize_t
2350netxen_store_diag_mode(struct device *dev,
2351 struct device_attribute *attr, const char *buf, size_t len)
2352{
2353 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2354 unsigned long new;
2355
2356 if (strict_strtoul(buf, 2, &new))
2357 return -EINVAL;
2358
2359 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2360 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2361
2362 return len;
2363}
2364
2365static ssize_t
2366netxen_show_diag_mode(struct device *dev,
2367 struct device_attribute *attr, char *buf)
2368{
2369 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2370
2371 return sprintf(buf, "%d\n",
2372 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2373}
2374
2375static struct device_attribute dev_attr_diag_mode = {
2376 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2377 .show = netxen_show_diag_mode,
2378 .store = netxen_store_diag_mode,
2379};
2380
2381static int
2382netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2383 loff_t offset, size_t size)
2384{
2385 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2386 return -EIO;
2387
2388 if ((size != 4) || (offset & 0x3))
2389 return -EINVAL;
2390
2391 if (offset < NETXEN_PCI_CRBSPACE)
2392 return -EINVAL;
2393
2394 return 0;
2395}
2396
2397static ssize_t
2398netxen_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
2399 char *buf, loff_t offset, size_t size)
2400{
2401 struct device *dev = container_of(kobj, struct device, kobj);
2402 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2403 u32 data;
2404 int ret;
2405
2406 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2407 if (ret != 0)
2408 return ret;
2409
2410 data = NXRD32(adapter, offset);
2411 memcpy(buf, &data, size);
2412 return size;
2413}
2414
2415static ssize_t
2416netxen_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
2417 char *buf, loff_t offset, size_t size)
2418{
2419 struct device *dev = container_of(kobj, struct device, kobj);
2420 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2421 u32 data;
2422 int ret;
2423
2424 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2425 if (ret != 0)
2426 return ret;
2427
2428 memcpy(&data, buf, size);
2429 NXWR32(adapter, offset, data);
2430 return size;
2431}
2432
2433static int
2434netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2435 loff_t offset, size_t size)
2436{
2437 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2438 return -EIO;
2439
2440 if ((size != 8) || (offset & 0x7))
2441 return -EIO;
2442
2443 return 0;
2444}
2445
2446static ssize_t
2447netxen_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
2448 char *buf, loff_t offset, size_t size)
2449{
2450 struct device *dev = container_of(kobj, struct device, kobj);
2451 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2452 u64 data;
2453 int ret;
2454
2455 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2456 if (ret != 0)
2457 return ret;
2458
2459 if (adapter->pci_mem_read(adapter, offset, &data))
2460 return -EIO;
2461
2462 memcpy(buf, &data, size);
2463
2464 return size;
2465}
2466
2467ssize_t netxen_sysfs_write_mem(struct kobject *kobj,
2468 struct bin_attribute *attr, char *buf,
2469 loff_t offset, size_t size)
2470{
2471 struct device *dev = container_of(kobj, struct device, kobj);
2472 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2473 u64 data;
2474 int ret;
2475
2476 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2477 if (ret != 0)
2478 return ret;
2479
2480 memcpy(&data, buf, size);
2481
2482 if (adapter->pci_mem_write(adapter, offset, data))
2483 return -EIO;
2484
2485 return size;
2486}
2487
2488
2489static struct bin_attribute bin_attr_crb = {
2490 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2491 .size = 0,
2492 .read = netxen_sysfs_read_crb,
2493 .write = netxen_sysfs_write_crb,
2494};
2495
2496static struct bin_attribute bin_attr_mem = {
2497 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2498 .size = 0,
2499 .read = netxen_sysfs_read_mem,
2500 .write = netxen_sysfs_write_mem,
2501};
2502
caa2dd53
NK		 2503static ssize_t
2504netxen_store_auto_fw_reset(struct module_attribute *mattr,
2505 struct module *mod, const char *buf, size_t count)
2506
2507{
2508 unsigned long new;
2509
2510 if (strict_strtoul(buf, 16, &new))
2511 return -EINVAL;
2512
2513 if ((new == AUTO_FW_RESET_ENABLED) || (new == AUTO_FW_RESET_DISABLED)) {
2514 auto_fw_reset = new;
2515 return count;
2516 }
2517
2518 return -EINVAL;
2519}
2520
2521static ssize_t
2522netxen_show_auto_fw_reset(struct module_attribute *mattr,
2523 struct module *mod, char *buf)
2524
2525{
2526 if (auto_fw_reset == AUTO_FW_RESET_ENABLED)
2527 return sprintf(buf, "enabled\n");
2528 else
2529 return sprintf(buf, "disabled\n");
2530}
2531
2532static struct module_attribute mod_attr_fw_reset = {
2533 .attr = {.name = "auto_fw_reset", .mode = (S_IRUGO | S_IWUSR)},
2534 .show = netxen_show_auto_fw_reset,
2535 .store = netxen_store_auto_fw_reset,
2536};
2537
fa3ce355
NK		 2538static void
2539netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2540{
2541 struct net_device *netdev = adapter->netdev;
2542 struct device *dev = &netdev->dev;
2543
2544 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2545 /* bridged_mode control */
2546 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2547 dev_warn(&netdev->dev,
2548 "failed to create bridged_mode sysfs entry\n");
2549 }
2550 }
2551}
2552
2553static void
2554netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2555{
2556 struct net_device *netdev = adapter->netdev;
2557 struct device *dev = &netdev->dev;
2558
2559 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2560 device_remove_file(dev, &dev_attr_bridged_mode);
2561}
2562
70f9cf89
DP		 2563static void
2564netxen_create_diag_entries(struct netxen_adapter *adapter)
2565{
2566 struct pci_dev *pdev = adapter->pdev;
2567 struct device *dev;
2568
2569 dev = &pdev->dev;
2570 if (device_create_file(dev, &dev_attr_diag_mode))
2571 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2572 if (device_create_bin_file(dev, &bin_attr_crb))
2573 dev_info(dev, "failed to create crb sysfs entry\n");
2574 if (device_create_bin_file(dev, &bin_attr_mem))
2575 dev_info(dev, "failed to create mem sysfs entry\n");
2576}
2577
2578
2579static void
2580netxen_remove_diag_entries(struct netxen_adapter *adapter)
2581{
2582 struct pci_dev *pdev = adapter->pdev;
2583 struct device *dev = &pdev->dev;
2584
2585 device_remove_file(dev, &dev_attr_diag_mode);
2586 device_remove_bin_file(dev, &bin_attr_crb);
2587 device_remove_bin_file(dev, &bin_attr_mem);
2588}
2589
044824d9
DP		 2590#ifdef CONFIG_INET
2591
6598b169
DP		 2592#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2593
2594static int
2595netxen_destip_supported(struct netxen_adapter *adapter)
2596{
2597 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2598 return 0;
2599
2600 if (adapter->ahw.cut_through)
2601 return 0;
2602
2603 return 1;
2604}
2605
d0725e4d
AKS		 2606static void
2607netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2608{
2609 struct in_device *indev;
2610 struct netxen_adapter *adapter = netdev_priv(dev);
2611
3db76755 2612 if (!netxen_destip_supported(adapter))
d0725e4d
AKS		 2613 return;
2614
2615 indev = in_dev_get(dev);
2616 if (!indev)
2617 return;
2618
2619 for_ifa(indev) {
2620 switch (event) {
2621 case NETDEV_UP:
2622 netxen_config_ipaddr(adapter,
2623 ifa->ifa_address, NX_IP_UP);
2624 break;
2625 case NETDEV_DOWN:
2626 netxen_config_ipaddr(adapter,
2627 ifa->ifa_address, NX_IP_DOWN);
2628 break;
2629 default:
2630 break;
2631 }
2632 } endfor_ifa(indev);
2633
2634 in_dev_put(indev);
2635 return;
2636}
2637
6598b169
DP		 2638static int netxen_netdev_event(struct notifier_block *this,
2639 unsigned long event, void *ptr)
2640{
2641 struct netxen_adapter *adapter;
2642 struct net_device *dev = (struct net_device *)ptr;
6598b169
DP		 2643
2644recheck:
2645 if (dev == NULL)
2646 goto done;
2647
2648 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2649 dev = vlan_dev_real_dev(dev);
2650 goto recheck;
2651 }
2652
2653 if (!is_netxen_netdev(dev))
2654 goto done;
2655
2656 adapter = netdev_priv(dev);
2657
d0725e4d 2658 if (!adapter)
6598b169
DP		 2659 goto done;
2660
2661 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2662 goto done;
2663
d0725e4d 2664 netxen_config_indev_addr(dev, event);
6598b169
DP		 2665done:
2666 return NOTIFY_DONE;
2667}
2668
2669static int
2670netxen_inetaddr_event(struct notifier_block *this,
2671 unsigned long event, void *ptr)
2672{
2673 struct netxen_adapter *adapter;
2674 struct net_device *dev;
2675
2676 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2677
2678 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2679
2680recheck:
2681 if (dev == NULL || !netif_running(dev))
2682 goto done;
2683
2684 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2685 dev = vlan_dev_real_dev(dev);
2686 goto recheck;
2687 }
2688
2689 if (!is_netxen_netdev(dev))
2690 goto done;
2691
2692 adapter = netdev_priv(dev);
2693
2694 if (!adapter || !netxen_destip_supported(adapter))
2695 goto done;
2696
2697 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2698 goto done;
2699
2700 switch (event) {
2701 case NETDEV_UP:
2702 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2703 break;
2704 case NETDEV_DOWN:
2705 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2706 break;
2707 default:
2708 break;
2709 }
2710
2711done:
2712 return NOTIFY_DONE;
2713}
2714
2715static struct notifier_block netxen_netdev_cb = {
2716 .notifier_call = netxen_netdev_event,
2717};
2718
2719static struct notifier_block netxen_inetaddr_cb = {
2720 .notifier_call = netxen_inetaddr_event,
2721};
9feae56c
RD		 2722#else
2723static void
2724netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2725{ }
044824d9 2726#endif
6598b169 2727
3d396eb1
AK		 2728static struct pci_driver netxen_driver = {
2729 .name = netxen_nic_driver_name,
2730 .id_table = netxen_pci_tbl,
2731 .probe = netxen_nic_probe,
0b72e659 2732 .remove = __devexit_p(netxen_nic_remove),
01542cd1 2733#ifdef CONFIG_PM
0b72e659 2734 .suspend = netxen_nic_suspend,
22b5794b 2735 .resume = netxen_nic_resume,
01542cd1 2736#endif
22b5794b 2737 .shutdown = netxen_nic_shutdown
3d396eb1
AK		 2738};
2739
3d396eb1
AK		 2740static int __init netxen_init_module(void)
2741{
caa2dd53
NK		 2742 struct module *mod = THIS_MODULE;
2743
ff4fbd43
DP		 2744 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2745
044824d9 2746#ifdef CONFIG_INET
6598b169
DP		 2747 register_netdevice_notifier(&netxen_netdev_cb);
2748 register_inetaddr_notifier(&netxen_inetaddr_cb);
044824d9 2749#endif
6598b169 2750
caa2dd53
NK		 2751 if (sysfs_create_file(&mod->mkobj.kobj, &mod_attr_fw_reset.attr))
2752 printk(KERN_ERR "%s: Failed to create auto_fw_reset "
2753 "sysfs entry.", netxen_nic_driver_name);
2754
184231bd 2755 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 2756}
2757
2758module_init(netxen_init_module);
2759
2760static void __exit netxen_exit_module(void)
2761{
caa2dd53
NK		 2762 struct module *mod = THIS_MODULE;
2763
2764 sysfs_remove_file(&mod->mkobj.kobj, &mod_attr_fw_reset.attr);
2765
3d396eb1 2766 pci_unregister_driver(&netxen_driver);
6598b169 2767
044824d9 2768#ifdef CONFIG_INET
6598b169
DP		 2769 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2770 unregister_netdevice_notifier(&netxen_netdev_cb);
044824d9 2771#endif
3d396eb1
AK		 2772}
2773
2774module_exit(netxen_exit_module);
Linux 6.x block layer and io_uring tree(s)