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netxen: add access to on chip memory for tools
[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
3d396eb1
AK		 55/* Local functions to NetXen NIC driver */
56static int __devinit netxen_nic_probe(struct pci_dev *pdev,
2956640d 57 const struct pci_device_id *ent);
3d396eb1
AK		 58static void __devexit netxen_nic_remove(struct pci_dev *pdev);
59static int netxen_nic_open(struct net_device *netdev);
60static int netxen_nic_close(struct net_device *netdev);
61357325
SH		 61static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
62 struct net_device *);
3d396eb1 63static void netxen_tx_timeout(struct net_device *netdev);
74c520da 64static void netxen_tx_timeout_task(struct work_struct *work);
6a581e93
DP		 65static void netxen_fw_poll_work(struct work_struct *work);
66static void netxen_schedule_work(struct netxen_adapter *adapter,
67 work_func_t func, int delay);
68static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
bea3348e 69static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 70#ifdef CONFIG_NET_POLL_CONTROLLER
71static void netxen_nic_poll_controller(struct net_device *netdev);
72#endif
fa3ce355
NK		 73
74static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
75static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
76
6a581e93
DP		 77static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
78static int netxen_can_start_firmware(struct netxen_adapter *adapter);
79
1494a814 80static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 81static irqreturn_t netxen_msi_intr(int irq, void *data);
b3df68f8 82static irqreturn_t netxen_msix_intr(int irq, void *data);
3d396eb1 83
d0725e4d
AKS		 84static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
85
3d396eb1 86/* PCI Device ID Table */
70081ac5 87#define ENTRY(device) \
040dec3b 88 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 89 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
90
3d396eb1 91static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 92 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
93 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
94 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
95 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
96 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
97 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
98 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
99 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 100 {0,}
101};
102
103MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
104
7830b22c
DP		 105static uint32_t crb_cmd_producer[4] = {
106 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
107 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
108};
109
c9fc891f 110void
3ce06a32 111netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
cb2107be 112 struct nx_host_tx_ring *tx_ring)
3176ff3e 113{
195c5f98 114 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
cb2107be
DP		 115
116 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
117 netif_stop_queue(adapter->netdev);
118 smp_mb();
119 }
3176ff3e
MT		 120}
121
7830b22c
DP		 122static uint32_t crb_cmd_consumer[4] = {
123 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
124 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
125};
126
3ce06a32
DP		 127static inline void
128netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
cb2107be 129 struct nx_host_tx_ring *tx_ring)
3176ff3e 130{
195c5f98 131 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
3176ff3e
MT		 132}
133
2956640d 134static uint32_t msi_tgt_status[8] = {
443be796 135 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 136 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
137 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
138 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 139};
140
2956640d
DP		 141static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
142
d8b100c5 143static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 144{
d8b100c5
DP		 145 struct netxen_adapter *adapter = sds_ring->adapter;
146
195c5f98 147 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 148}
149
d8b100c5 150static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 151{
d8b100c5
DP		 152 struct netxen_adapter *adapter = sds_ring->adapter;
153
195c5f98 154 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 155
092bc571 156 if (!NETXEN_IS_MSI_FAMILY(adapter))
195c5f98 157 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
4638aef1
SH		 158}
159
71dcddbd
DP		 160static int
161netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
162{
163 int size = sizeof(struct nx_host_sds_ring) * count;
164
165 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
166
167 return (recv_ctx->sds_rings == NULL);
168}
169
d8b100c5 170static void
71dcddbd
DP		 171netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
172{
173 if (recv_ctx->sds_rings != NULL)
174 kfree(recv_ctx->sds_rings);
232e7d68
DP		 175
176 recv_ctx->sds_rings = NULL;
71dcddbd
DP		 177}
178
179static int
d8b100c5
DP		 180netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
181{
182 int ring;
183 struct nx_host_sds_ring *sds_ring;
184 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
185
71dcddbd 186 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
f17443f4 187 return -ENOMEM;
71dcddbd 188
d8b100c5
DP		 189 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
190 sds_ring = &recv_ctx->sds_rings[ring];
191 netif_napi_add(netdev, &sds_ring->napi,
192 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
193 }
71dcddbd
DP		 194
195 return 0;
d8b100c5
DP		 196}
197
232e7d68
DP		 198static void
199netxen_napi_del(struct netxen_adapter *adapter)
200{
201 int ring;
202 struct nx_host_sds_ring *sds_ring;
203 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
204
205 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
206 sds_ring = &recv_ctx->sds_rings[ring];
207 netif_napi_del(&sds_ring->napi);
208 }
209
210 netxen_free_sds_rings(&adapter->recv_ctx);
211}
212
d8b100c5
DP		 213static void
214netxen_napi_enable(struct netxen_adapter *adapter)
215{
216 int ring;
217 struct nx_host_sds_ring *sds_ring;
218 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
219
220 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
221 sds_ring = &recv_ctx->sds_rings[ring];
222 napi_enable(&sds_ring->napi);
223 netxen_nic_enable_int(sds_ring);
224 }
225}
226
227static void
228netxen_napi_disable(struct netxen_adapter *adapter)
229{
230 int ring;
231 struct nx_host_sds_ring *sds_ring;
232 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
233
234 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
235 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 236 netxen_nic_disable_int(sds_ring);
b2af9cb0
DP		 237 napi_synchronize(&sds_ring->napi);
238 napi_disable(&sds_ring->napi);
d8b100c5
DP		 239 }
240}
241
50c643e7 242static int nx_set_dma_mask(struct netxen_adapter *adapter)
2956640d
DP		 243{
244 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 245 uint64_t mask, cmask;
246
247 adapter->pci_using_dac = 0;
2956640d 248
6afd142f 249 mask = DMA_BIT_MASK(32);
6afd142f 250 cmask = DMA_BIT_MASK(32);
1f434f63 251
50c643e7 252 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1f434f63 253#ifndef CONFIG_IA64
6afd142f 254 mask = DMA_BIT_MASK(35);
1f434f63 255#endif
50c643e7
DP		 256 } else {
257 mask = DMA_BIT_MASK(39);
258 cmask = mask;
259 }
260
2956640d 261 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 262 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 263 adapter->pci_using_dac = 1;
264 return 0;
265 }
2956640d 266
1f434f63
DP		 267 return -EIO;
268}
269
270/* Update addressable range if firmware supports it */
271static int
272nx_update_dma_mask(struct netxen_adapter *adapter)
273{
274 int change, shift, err;
50c643e7 275 uint64_t mask, old_mask, old_cmask;
1f434f63
DP		 276 struct pci_dev *pdev = adapter->pdev;
277
278 change = 0;
279
f98a9f69 280 shift = NXRD32(adapter, CRB_DMA_SHIFT);
f60f7856 281 if (shift > 32)
1f434f63
DP		 282 return 0;
283
284 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
285 change = 1;
286 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
287 change = 1;
288
289 if (change) {
290 old_mask = pdev->dma_mask;
50c643e7
DP		 291 old_cmask = pdev->dev.coherent_dma_mask;
292
f60f7856 293 mask = DMA_BIT_MASK(32+shift);
1f434f63
DP		 294
295 err = pci_set_dma_mask(pdev, mask);
296 if (err)
50c643e7
DP		 297 goto err_out;
298
299 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
300
301 err = pci_set_consistent_dma_mask(pdev, mask);
302 if (err)
303 goto err_out;
304 }
305 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
2956640d
DP		 306 }
307
2956640d 308 return 0;
50c643e7
DP		 309
310err_out:
311 pci_set_dma_mask(pdev, old_mask);
312 pci_set_consistent_dma_mask(pdev, old_cmask);
313 return err;
2956640d
DP		 314}
315
2956640d
DP		 316static int
317netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
318{
27c915a4 319 u32 val, timeout;
2956640d
DP		 320
321 if (first_boot == 0x55555555) {
322 /* This is the first boot after power up */
f98a9f69 323 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 324
325 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
326 return 0;
2956640d
DP		 327
328 /* PCI bus master workaround */
f98a9f69 329 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 330 if (!(first_boot & 0x4)) {
331 first_boot |= 0x4;
f98a9f69
DP		 332 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
333 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 334 }
335
336 /* This is the first boot after power up */
f98a9f69 337 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 338 if (first_boot != 0x80000f) {
339 /* clear the register for future unloads/loads */
f98a9f69 340 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 341 return -EIO;
2956640d
DP		 342 }
343
27c915a4 344 /* Start P2 boot loader */
f98a9f69
DP		 345 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
346 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 347 timeout = 0;
348 do {
349 msleep(1);
f98a9f69 350 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 351
352 if (++timeout > 5000)
353 return -EIO;
354
355 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 356 }
27c915a4 357 return 0;
2956640d
DP		 358}
359
360static void netxen_set_port_mode(struct netxen_adapter *adapter)
361{
362 u32 val, data;
363
1e2d0059 364 val = adapter->ahw.board_type;
2956640d
DP		 365 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
366 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
367 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
368 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 369 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 370 } else if (port_mode == NETXEN_PORT_MODE_XG) {
371 data = NETXEN_PORT_MODE_XG;
f98a9f69 372 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 373 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
374 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 375 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 376 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
377 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 378 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 379 } else {
380 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 381 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 382 }
383
384 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
385 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
386 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
387 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
388 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
389 }
f98a9f69 390 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 391 }
392}
393
2956640d
DP		 394static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
395{
396 u32 control;
397 int pos;
398
399 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
400 if (pos) {
401 pci_read_config_dword(pdev, pos, &control);
402 if (enable)
403 control |= PCI_MSIX_FLAGS_ENABLE;
404 else
405 control = 0;
406 pci_write_config_dword(pdev, pos, control);
407 }
408}
409
be339aee 410static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 411{
412 int i;
413
be339aee 414 for (i = 0; i < count; i++)
2956640d
DP		 415 adapter->msix_entries[i].entry = i;
416}
417
9dc28efe
DP		 418static int
419netxen_read_mac_addr(struct netxen_adapter *adapter)
420{
421 int i;
422 unsigned char *p;
423 __le64 mac_addr;
9dc28efe
DP		 424 struct net_device *netdev = adapter->netdev;
425 struct pci_dev *pdev = adapter->pdev;
426
9dc28efe
DP		 427 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
428 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
429 return -EIO;
430 } else {
431 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
432 return -EIO;
433 }
434
435 p = (unsigned char *)&mac_addr;
436 for (i = 0; i < 6; i++)
437 netdev->dev_addr[i] = *(p + 5 - i);
438
439 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
440
441 /* set station address */
442
e174961c
JB		 443 if (!is_valid_ether_addr(netdev->perm_addr))
444 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 445
446 return 0;
447}
448
3d0a3cc9
DP		 449int netxen_nic_set_mac(struct net_device *netdev, void *p)
450{
451 struct netxen_adapter *adapter = netdev_priv(netdev);
452 struct sockaddr *addr = p;
453
454 if (!is_valid_ether_addr(addr->sa_data))
455 return -EINVAL;
456
457 if (netif_running(netdev)) {
458 netif_device_detach(netdev);
459 netxen_napi_disable(adapter);
460 }
461
462 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
463 adapter->macaddr_set(adapter, addr->sa_data);
464
465 if (netif_running(netdev)) {
466 netif_device_attach(netdev);
467 netxen_napi_enable(adapter);
468 }
469 return 0;
470}
471
1abd266f
SH		 472static void netxen_set_multicast_list(struct net_device *dev)
473{
474 struct netxen_adapter *adapter = netdev_priv(dev);
475
3d0a3cc9 476 adapter->set_multi(dev);
1abd266f
SH		 477}
478
479static const struct net_device_ops netxen_netdev_ops = {
480 .ndo_open = netxen_nic_open,
481 .ndo_stop = netxen_nic_close,
482 .ndo_start_xmit = netxen_nic_xmit_frame,
483 .ndo_get_stats = netxen_nic_get_stats,
484 .ndo_validate_addr = eth_validate_addr,
485 .ndo_set_multicast_list = netxen_set_multicast_list,
486 .ndo_set_mac_address = netxen_nic_set_mac,
487 .ndo_change_mtu = netxen_nic_change_mtu,
488 .ndo_tx_timeout = netxen_tx_timeout,
489#ifdef CONFIG_NET_POLL_CONTROLLER
490 .ndo_poll_controller = netxen_nic_poll_controller,
491#endif
492};
493
97daee83
DP		 494static void
495netxen_setup_intr(struct netxen_adapter *adapter)
496{
497 struct netxen_legacy_intr_set *legacy_intrp;
498 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 499 int err, num_msix;
500
501 if (adapter->rss_supported) {
502 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
503 MSIX_ENTRIES_PER_ADAPTER : 2;
504 } else
505 num_msix = 1;
506
507 adapter->max_sds_rings = 1;
97daee83
DP		 508
509 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 510
511 if (adapter->ahw.revision_id >= NX_P3_B0)
512 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
513 else
514 legacy_intrp = &legacy_intr[0];
195c5f98
AKS		 515
516 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
517 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
518 legacy_intrp->tgt_status_reg);
519 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
520 legacy_intrp->tgt_mask_reg);
521 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
522 legacy_intrp->pci_int_reg);
523 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
524
525 if (adapter->ahw.revision_id >= NX_P3_B1)
526 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
527 ISR_INT_STATE_REG);
528 else
529 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
530 CRB_INT_VECTOR);
97daee83
DP		 531
532 netxen_set_msix_bit(pdev, 0);
533
534 if (adapter->msix_supported) {
535
be339aee
DP		 536 netxen_init_msix_entries(adapter, num_msix);
537 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
538 if (err == 0) {
539 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
540 netxen_set_msix_bit(pdev, 1);
97daee83 541
be339aee
DP		 542 if (adapter->rss_supported)
543 adapter->max_sds_rings = num_msix;
97daee83 544
be339aee
DP		 545 dev_info(&pdev->dev, "using msi-x interrupts\n");
546 return;
547 }
548
549 if (err > 0)
550 pci_disable_msix(pdev);
551
552 /* fall through for msi */
97daee83 553 }
be339aee
DP		 554
555 if (use_msi && !pci_enable_msi(pdev)) {
556 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
195c5f98
AKS		 557 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
558 msi_tgt_status[adapter->ahw.pci_func]);
be339aee 559 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 560 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 561 return;
562 }
563
564 dev_info(&pdev->dev, "using legacy interrupts\n");
565 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 566}
567
568static void
569netxen_teardown_intr(struct netxen_adapter *adapter)
570{
571 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
572 pci_disable_msix(adapter->pdev);
573 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
574 pci_disable_msi(adapter->pdev);
575}
576
577static void
578netxen_cleanup_pci_map(struct netxen_adapter *adapter)
579{
580 if (adapter->ahw.db_base != NULL)
581 iounmap(adapter->ahw.db_base);
582 if (adapter->ahw.pci_base0 != NULL)
583 iounmap(adapter->ahw.pci_base0);
584 if (adapter->ahw.pci_base1 != NULL)
585 iounmap(adapter->ahw.pci_base1);
586 if (adapter->ahw.pci_base2 != NULL)
587 iounmap(adapter->ahw.pci_base2);
588}
589
590static int
591netxen_setup_pci_map(struct netxen_adapter *adapter)
592{
593 void __iomem *mem_ptr0 = NULL;
594 void __iomem *mem_ptr1 = NULL;
595 void __iomem *mem_ptr2 = NULL;
596 void __iomem *db_ptr = NULL;
597
97daee83
DP		 598 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
599
600 struct pci_dev *pdev = adapter->pdev;
601 int pci_func = adapter->ahw.pci_func;
602
603 int err = 0;
604
605 /*
606 * Set the CRB window to invalid. If any register in window 0 is
607 * accessed it should set the window to 0 and then reset it to 1.
608 */
609 adapter->curr_window = 255;
47abe356 610 adapter->ahw.ocm_win = -1;
97daee83
DP		 611
612 /* remap phys address */
613 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
614 mem_len = pci_resource_len(pdev, 0);
97daee83 615
97daee83
DP		 616 /* 128 Meg of memory */
617 if (mem_len == NETXEN_PCI_128MB_SIZE) {
618 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
619 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
620 SECOND_PAGE_GROUP_SIZE);
621 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
622 THIRD_PAGE_GROUP_SIZE);
47abe356 623 pci_len0 = FIRST_PAGE_GROUP_SIZE;
97daee83
DP		 624 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
625 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
626 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
627 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83 628 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
97daee83
DP		 629
630 mem_ptr0 = pci_ioremap_bar(pdev, 0);
631 if (mem_ptr0 == NULL) {
632 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
633 return -EIO;
634 }
635 pci_len0 = mem_len;
97daee83
DP		 636 } else {
637 return -EIO;
638 }
639
195c5f98
AKS		 640 netxen_setup_hwops(adapter);
641
97daee83
DP		 642 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
643
644 adapter->ahw.pci_base0 = mem_ptr0;
645 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 646 adapter->ahw.pci_base1 = mem_ptr1;
647 adapter->ahw.pci_base2 = mem_ptr2;
648
47abe356
DP		 649 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
650 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
651 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
652 }
653
97daee83
DP		 654 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
655 goto skip_doorbell;
656
657 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
658 db_len = pci_resource_len(pdev, 4);
659
660 if (db_len == 0) {
661 printk(KERN_ERR "%s: doorbell is disabled\n",
662 netxen_nic_driver_name);
663 err = -EIO;
664 goto err_out;
665 }
666
667 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
668 if (!db_ptr) {
669 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
670 netxen_nic_driver_name);
671 err = -EIO;
672 goto err_out;
673 }
674
675skip_doorbell:
676 adapter->ahw.db_base = db_ptr;
677 adapter->ahw.db_len = db_len;
678 return 0;
679
680err_out:
681 netxen_cleanup_pci_map(adapter);
682 return err;
683}
684
2b9e62ee
DP		 685static void
686netxen_check_options(struct netxen_adapter *adapter)
687{
688 u32 fw_major, fw_minor, fw_build;
689 char brd_name[NETXEN_MAX_SHORT_NAME];
690 char serial_num[32];
691 int i, offset, val;
692 int *ptr32;
693 struct pci_dev *pdev = adapter->pdev;
694
695 adapter->driver_mismatch = 0;
696
697 ptr32 = (int *)&serial_num;
698 offset = NX_FW_SERIAL_NUM_OFFSET;
699 for (i = 0; i < 8; i++) {
700 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
701 dev_err(&pdev->dev, "error reading board info\n");
702 adapter->driver_mismatch = 1;
703 return;
704 }
705 ptr32[i] = cpu_to_le32(val);
706 offset += sizeof(u32);
707 }
708
709 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
710 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
711 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
712
713 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
714
715 if (adapter->portnum == 0) {
716 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
717
718 printk(KERN_INFO "NetXen %s Board S/N %s Chip rev 0x%x\n",
719 brd_name, serial_num, adapter->ahw.revision_id);
720 }
721
722 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
723 adapter->driver_mismatch = 1;
724 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
725 fw_major, fw_minor, fw_build);
726 return;
727 }
728
729 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
730 i = NXRD32(adapter, NETXEN_SRE_MISC);
731 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
732 }
733
734 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
735 fw_major, fw_minor, fw_build,
736 adapter->ahw.cut_through ? "cut-through" : "legacy");
737
738 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
739 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
740
741 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
742
743 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
744 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
745 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
746 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
747 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
748 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
749 }
750
751 adapter->msix_supported = 0;
752 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
753 adapter->msix_supported = !!use_msi_x;
754 adapter->rss_supported = !!use_msi_x;
755 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
756 switch (adapter->ahw.board_type) {
757 case NETXEN_BRDTYPE_P2_SB31_10G:
758 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
759 adapter->msix_supported = !!use_msi_x;
760 adapter->rss_supported = !!use_msi_x;
761 break;
762 default:
763 break;
764 }
765 }
766
767 adapter->num_txd = MAX_CMD_DESCRIPTORS;
768
769 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
770 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
771 adapter->max_rds_rings = 3;
772 } else {
773 adapter->num_lro_rxd = 0;
774 adapter->max_rds_rings = 2;
775 }
776}
777
ba599d4f 778static int
6a581e93 779netxen_start_firmware(struct netxen_adapter *adapter)
ba599d4f
DP		 780{
781 int val, err, first_boot;
782 struct pci_dev *pdev = adapter->pdev;
783
2b9e62ee
DP		 784 /* required for NX2031 dummy dma */
785 err = nx_set_dma_mask(adapter);
786 if (err)
787 return err;
788
6a581e93 789 if (!netxen_can_start_firmware(adapter))
96f2ebd2 790 goto wait_init;
0b72e659 791
f98a9f69 792 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 793
794 err = netxen_check_hw_init(adapter, first_boot);
795 if (err) {
796 dev_err(&pdev->dev, "error in init HW init sequence\n");
797 return err;
798 }
799
6a581e93 800 netxen_request_firmware(adapter);
f7185c71 801
67c38fc6 802 err = netxen_need_fw_reset(adapter);
1dbc84a7 803 if (err < 0)
db4cfd8a 804 goto err_out;
1dbc84a7 805 if (err == 0)
ec5c50cb 806 goto ready;
67c38fc6 807
ba599d4f 808 if (first_boot != 0x55555555) {
f98a9f69 809 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
ba599d4f
DP		 810 netxen_pinit_from_rom(adapter, 0);
811 msleep(1);
812 }
567c6c4e 813
f98a9f69 814 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
6a581e93
DP		 815 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
816 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
817
567c6c4e
DP		 818 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
819 netxen_set_port_mode(adapter);
820
db4cfd8a
DP		 821 err = netxen_load_firmware(adapter);
822 if (err)
823 goto err_out;
ba599d4f 824
6a581e93
DP		 825 netxen_release_firmware(adapter);
826
ba599d4f
DP		 827 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
828
829 /* Initialize multicast addr pool owners */
830 val = 0x7654;
1e2d0059 831 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 832 val |= 0x0f000000;
f98a9f69 833 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 834
835 }
836
83ac51fa 837 err = netxen_init_dummy_dma(adapter);
ba599d4f 838 if (err)
db4cfd8a 839 goto err_out;
ba599d4f
DP		 840
841 /*
842 * Tell the hardware our version number.
843 */
844 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
845 | ((_NETXEN_NIC_LINUX_MINOR << 8))
846 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 847 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 848
ec5c50cb 849ready:
6a581e93
DP		 850 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
851
96f2ebd2 852wait_init:
ba599d4f
DP		 853 /* Handshake with the card before we register the devices. */
854 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
855 if (err) {
83ac51fa 856 netxen_free_dummy_dma(adapter);
db4cfd8a 857 goto err_out;
ba599d4f
DP		 858 }
859
68b3cae0
DP		 860 nx_update_dma_mask(adapter);
861
6a581e93 862 netxen_check_options(adapter);
68b3cae0 863
74c520da
AKS		 864 adapter->need_fw_reset = 0;
865
ec5c50cb 866 /* fall through and release firmware */
db4cfd8a
DP		 867
868err_out:
869 netxen_release_firmware(adapter);
870 return err;
ba599d4f
DP		 871}
872
9f5bc7f1
DP		 873static int
874netxen_nic_request_irq(struct netxen_adapter *adapter)
875{
876 irq_handler_t handler;
d8b100c5
DP		 877 struct nx_host_sds_ring *sds_ring;
878 int err, ring;
879
9f5bc7f1
DP		 880 unsigned long flags = IRQF_SAMPLE_RANDOM;
881 struct net_device *netdev = adapter->netdev;
d8b100c5 882 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 883
9f5bc7f1
DP		 884 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
885 handler = netxen_msix_intr;
886 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
887 handler = netxen_msi_intr;
888 else {
889 flags |= IRQF_SHARED;
890 handler = netxen_intr;
891 }
892 adapter->irq = netdev->irq;
893
d8b100c5
DP		 894 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
895 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 896 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 897 err = request_irq(sds_ring->irq, handler,
898 flags, sds_ring->name, sds_ring);
899 if (err)
900 return err;
901 }
902
903 return 0;
904}
905
906static void
907netxen_nic_free_irq(struct netxen_adapter *adapter)
908{
909 int ring;
910 struct nx_host_sds_ring *sds_ring;
911
912 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
913
914 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
915 sds_ring = &recv_ctx->sds_rings[ring];
916 free_irq(sds_ring->irq, sds_ring);
917 }
9f5bc7f1
DP		 918}
919
ca2ef330
DP		 920static void
921netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
922{
923 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
924 adapter->coal.normal.data.rx_time_us =
925 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
926 adapter->coal.normal.data.rx_packets =
927 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
928 adapter->coal.normal.data.tx_time_us =
929 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
930 adapter->coal.normal.data.tx_packets =
931 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
932}
933
9f5bc7f1
DP		 934static int
935netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
936{
937 int err;
938
db4cfd8a
DP		 939 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
940 return -EIO;
941
9f5bc7f1
DP		 942 err = adapter->init_port(adapter, adapter->physical_port);
943 if (err) {
944 printk(KERN_ERR "%s: Failed to initialize port %d\n",
945 netxen_nic_driver_name, adapter->portnum);
946 return err;
947 }
3d0a3cc9
DP		 948 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
949 adapter->macaddr_set(adapter, netdev->dev_addr);
9f5bc7f1 950
3d0a3cc9
DP		 951 adapter->set_multi(netdev);
952 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 953
954 adapter->ahw.linkup = 0;
9f5bc7f1 955
d8b100c5
DP		 956 if (adapter->max_sds_rings > 1)
957 netxen_config_rss(adapter, 1);
9f5bc7f1 958
ca2ef330
DP		 959 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
960 netxen_config_intr_coalesce(adapter);
961
1bb482f8
NK		 962 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
963 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
964
b2af9cb0
DP		 965 netxen_napi_enable(adapter);
966
5103c9f7 967 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 968 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 969 else
970 netxen_nic_set_link_parameters(adapter);
971
6a581e93 972 set_bit(__NX_DEV_UP, &adapter->state);
9f5bc7f1
DP		 973 return 0;
974}
975
976static void
977netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
978{
db4cfd8a
DP		 979 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
980 return;
981
6a581e93
DP		 982 clear_bit(__NX_DEV_UP, &adapter->state);
983
b2af9cb0 984 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 985 netif_carrier_off(netdev);
b2af9cb0 986 netif_tx_disable(netdev);
9f5bc7f1
DP		 987
988 if (adapter->stop_port)
989 adapter->stop_port(adapter);
990
5cf4d323
DP		 991 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
992 netxen_p3_free_mac_list(adapter);
993
22b5794b
AKS		 994 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
995
be339aee
DP		 996 netxen_napi_disable(adapter);
997
9f5bc7f1 998 netxen_release_tx_buffers(adapter);
b2af9cb0 999 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1
DP		 1000}
1001
1002
1003static int
1004netxen_nic_attach(struct netxen_adapter *adapter)
1005{
1006 struct net_device *netdev = adapter->netdev;
1007 struct pci_dev *pdev = adapter->pdev;
becf46a0 1008 int err, ring;
d8b100c5 1009 struct nx_host_rds_ring *rds_ring;
d877f1e3 1010 struct nx_host_tx_ring *tx_ring;
9f5bc7f1 1011
7042cd8f
AKS		 1012 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1013 return 0;
1014
9f5bc7f1 1015 err = netxen_init_firmware(adapter);
232e7d68
DP		 1016 if (err)
1017 return err;
1018
1019 err = netxen_napi_add(adapter, netdev);
1020 if (err)
1021 return err;
9f5bc7f1 1022
9f5bc7f1
DP		 1023 err = netxen_alloc_sw_resources(adapter);
1024 if (err) {
1025 printk(KERN_ERR "%s: Error in setting sw resources\n",
1026 netdev->name);
1027 return err;
1028 }
1029
9f5bc7f1
DP		 1030 err = netxen_alloc_hw_resources(adapter);
1031 if (err) {
1032 printk(KERN_ERR "%s: Error in setting hw resources\n",
1033 netdev->name);
1034 goto err_out_free_sw;
1035 }
1036
4f96b988 1037 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
4ea528a1 1038 tx_ring = adapter->tx_ring;
195c5f98
AKS		 1039 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1040 crb_cmd_producer[adapter->portnum]);
1041 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1042 crb_cmd_consumer[adapter->portnum]);
9f5bc7f1 1043
cb2107be
DP		 1044 tx_ring->producer = 0;
1045 tx_ring->sw_consumer = 0;
1046
1047 netxen_nic_update_cmd_producer(adapter, tx_ring);
1048 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 1049 }
1050
d8b100c5
DP		 1051 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1052 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1053 netxen_post_rx_buffers(adapter, ring, rds_ring);
1054 }
9f5bc7f1
DP		 1055
1056 err = netxen_nic_request_irq(adapter);
1057 if (err) {
1058 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1059 netdev->name);
1060 goto err_out_free_rxbuf;
1061 }
1062
ca2ef330
DP		 1063 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1064 netxen_nic_init_coalesce_defaults(adapter);
1065
fa3ce355
NK		 1066 netxen_create_sysfs_entries(adapter);
1067
9f5bc7f1
DP		 1068 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1069 return 0;
1070
1071err_out_free_rxbuf:
1072 netxen_release_rx_buffers(adapter);
1073 netxen_free_hw_resources(adapter);
1074err_out_free_sw:
1075 netxen_free_sw_resources(adapter);
1076 return err;
1077}
1078
1079static void
1080netxen_nic_detach(struct netxen_adapter *adapter)
1081{
7042cd8f
AKS		 1082 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1083 return;
1084
fa3ce355
NK		 1085 netxen_remove_sysfs_entries(adapter);
1086
9f5bc7f1 1087 netxen_free_hw_resources(adapter);
cf981ffb 1088 netxen_release_rx_buffers(adapter);
be339aee 1089 netxen_nic_free_irq(adapter);
232e7d68 1090 netxen_napi_del(adapter);
9f5bc7f1
DP		 1091 netxen_free_sw_resources(adapter);
1092
1093 adapter->is_up = 0;
1094}
1095
7042cd8f
AKS		 1096int
1097netxen_nic_reset_context(struct netxen_adapter *adapter)
1098{
1099 int err = 0;
1100 struct net_device *netdev = adapter->netdev;
1101
6a581e93
DP		 1102 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1103 return -EBUSY;
1104
7042cd8f
AKS		 1105 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1106
6a581e93
DP		 1107 netif_device_detach(netdev);
1108
7042cd8f
AKS		 1109 if (netif_running(netdev))
1110 netxen_nic_down(adapter, netdev);
1111
1112 netxen_nic_detach(adapter);
1113
6a581e93
DP		 1114 if (netif_running(netdev)) {
1115 err = netxen_nic_attach(adapter);
1116 if (!err)
1117 err = netxen_nic_up(adapter, netdev);
7042cd8f 1118
6a581e93
DP		 1119 if (err)
1120 goto done;
1121 }
1122
1123 netif_device_attach(netdev);
7042cd8f 1124 }
6a581e93 1125
7042cd8f 1126done:
6a581e93 1127 clear_bit(__NX_RESETTING, &adapter->state);
7042cd8f
AKS		 1128 return err;
1129}
1130
f17443f4
DP		 1131static int
1132netxen_setup_netdev(struct netxen_adapter *adapter,
1133 struct net_device *netdev)
1134{
1135 int err = 0;
1136 struct pci_dev *pdev = adapter->pdev;
1137
1138 adapter->rx_csum = 1;
1139 adapter->mc_enabled = 0;
1140 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1141 adapter->max_mc_count = 38;
1142 else
1143 adapter->max_mc_count = 16;
1144
1145 netdev->netdev_ops = &netxen_netdev_ops;
1146 netdev->watchdog_timeo = 2*HZ;
1147
1148 netxen_nic_change_mtu(netdev, netdev->mtu);
1149
1150 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1151
1152 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1153 netdev->features |= (NETIF_F_GRO);
1154 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1155
1156 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1157 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1158 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1159 }
1160
1161 if (adapter->pci_using_dac) {
1162 netdev->features |= NETIF_F_HIGHDMA;
1163 netdev->vlan_features |= NETIF_F_HIGHDMA;
1164 }
1165
028afe71
DP		 1166 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1167 netdev->features |= (NETIF_F_HW_VLAN_TX);
1168
1bb482f8
NK		 1169 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1170 netdev->features |= NETIF_F_LRO;
1171
f17443f4
DP		 1172 netdev->irq = adapter->msix_entries[0].vector;
1173
74c520da 1174 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
f17443f4
DP		 1175
1176 if (netxen_read_mac_addr(adapter))
1177 dev_warn(&pdev->dev, "failed to read mac addr\n");
1178
1179 netif_carrier_off(netdev);
1180 netif_stop_queue(netdev);
1181
1182 err = register_netdev(netdev);
1183 if (err) {
1184 dev_err(&pdev->dev, "failed to register net device\n");
1185 return err;
1186 }
1187
1188 return 0;
1189}
1190
3d396eb1
AK		 1191static int __devinit
1192netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1193{
1194 struct net_device *netdev = NULL;
1195 struct netxen_adapter *adapter = NULL;
2956640d 1196 int i = 0, err;
3176ff3e 1197 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 1198 uint8_t revision_id;
3d396eb1 1199
3176ff3e 1200 if (pdev->class != 0x020000) {
dcd56fdb 1201 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 1202 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 1203 return -ENODEV;
1204 }
2956640d 1205
11d89d63
DP		 1206 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1207 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1208 "will not be enabled.\n",
1209 NX_P3_A0, NX_P3_B1);
1210 return -ENODEV;
1211 }
1212
3d396eb1
AK		 1213 if ((err = pci_enable_device(pdev)))
1214 return err;
2956640d 1215
3d396eb1
AK		 1216 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1217 err = -ENODEV;
1218 goto err_out_disable_pdev;
1219 }
1220
1221 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1222 goto err_out_disable_pdev;
1223
1224 pci_set_master(pdev);
3176ff3e
MT		 1225
1226 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1227 if(!netdev) {
f17443f4
DP		 1228 dev_err(&pdev->dev, "failed to allocate net_device\n");
1229 err = -ENOMEM;
3176ff3e
MT		 1230 goto err_out_free_res;
1231 }
1232
3176ff3e
MT		 1233 SET_NETDEV_DEV(netdev, &pdev->dev);
1234
4cf1653a 1235 adapter = netdev_priv(netdev);
2956640d
DP		 1236 adapter->netdev = netdev;
1237 adapter->pdev = pdev;
13ba9c77 1238 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1239
1240 revision_id = pdev->revision;
1241 adapter->ahw.revision_id = revision_id;
1242
3ce06a32 1243 rwlock_init(&adapter->adapter_lock);
d8b100c5 1244 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1245 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1246
97daee83
DP		 1247 err = netxen_setup_pci_map(adapter);
1248 if (err)
6c80b18d 1249 goto err_out_free_netdev;
3d396eb1 1250
2d1a3bbd 1251 /* This will be reset for mezz cards */
3176ff3e 1252 adapter->portnum = pci_func_id;
3176ff3e 1253
f17443f4
DP		 1254 err = netxen_nic_get_board_info(adapter);
1255 if (err) {
1256 dev_err(&pdev->dev, "Error getting board config info.\n");
dcd56fdb
DP		 1257 goto err_out_iounmap;
1258 }
6c80b18d 1259
13ba9c77 1260 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1261 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1262 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1263 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1264 if (pci_func_id >= 2)
13ba9c77 1265 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1266 break;
1267 default:
1268 break;
1269 }
13ba9c77 1270
6a581e93 1271 err = netxen_start_firmware(adapter);
0b72e659
DP		 1272 if (err)
1273 goto err_out_iounmap;
f17443f4 1274
3d396eb1 1275 /*
6c80b18d 1276 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1277 */
dcd56fdb 1278 adapter->physical_port = adapter->portnum;
4f96b988 1279 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
f98a9f69 1280 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1281 if (i != 0x55555555)
1282 adapter->physical_port = i;
1283 }
6c80b18d 1284
6a581e93 1285 netxen_nic_clear_stats(adapter);
2956640d 1286
97daee83 1287 netxen_setup_intr(adapter);
2956640d 1288
f17443f4 1289 err = netxen_setup_netdev(adapter, netdev);
9dc28efe 1290 if (err)
2956640d 1291 goto err_out_disable_msi;
6c80b18d
MT		 1292
1293 pci_set_drvdata(pdev, adapter);
3d396eb1 1294
6a581e93
DP		 1295 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1296
1e2d0059 1297 switch (adapter->ahw.port_type) {
2956640d
DP		 1298 case NETXEN_NIC_GBE:
1299 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1300 adapter->netdev->name);
1301 break;
1302 case NETXEN_NIC_XGBE:
1303 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1304 adapter->netdev->name);
1305 break;
3d396eb1 1306 }
3d396eb1 1307
2956640d
DP		 1308 return 0;
1309
1310err_out_disable_msi:
97daee83 1311 netxen_teardown_intr(adapter);
6c80b18d 1312
83ac51fa 1313 netxen_free_dummy_dma(adapter);
3d396eb1 1314
6a581e93
DP		 1315 nx_decr_dev_ref_cnt(adapter);
1316
2956640d 1317err_out_iounmap:
97daee83 1318 netxen_cleanup_pci_map(adapter);
cb8011ad 1319
6c80b18d
MT		 1320err_out_free_netdev:
1321 free_netdev(netdev);
1322
1323err_out_free_res:
3d396eb1 1324 pci_release_regions(pdev);
6c80b18d
MT		 1325
1326err_out_disable_pdev:
2956640d 1327 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1328 pci_disable_device(pdev);
1329 return err;
1330}
1331
1332static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1333{
1334 struct netxen_adapter *adapter;
3176ff3e 1335 struct net_device *netdev;
3d396eb1 1336
6c80b18d 1337 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1338 if (adapter == NULL)
1339 return;
1340
6c80b18d
MT		 1341 netdev = adapter->netdev;
1342
6a581e93
DP		 1343 netxen_cancel_fw_work(adapter);
1344
96acb6eb
DP		 1345 unregister_netdev(netdev);
1346
e424fa9d
AKS		 1347 cancel_work_sync(&adapter->tx_timeout_task);
1348
7042cd8f 1349 netxen_nic_detach(adapter);
3d396eb1 1350
6a581e93
DP		 1351 nx_decr_dev_ref_cnt(adapter);
1352
439b454e 1353 if (adapter->portnum == 0)
83ac51fa 1354 netxen_free_dummy_dma(adapter);
96acb6eb 1355
6a581e93
DP		 1356 clear_bit(__NX_RESETTING, &adapter->state);
1357
97daee83 1358 netxen_teardown_intr(adapter);
3052246c 1359
97daee83 1360 netxen_cleanup_pci_map(adapter);
595e3fb8 1361
f7185c71
DP		 1362 netxen_release_firmware(adapter);
1363
595e3fb8 1364 pci_release_regions(pdev);
3052246c 1365 pci_disable_device(pdev);
595e3fb8
MT		 1366 pci_set_drvdata(pdev, NULL);
1367
6c80b18d 1368 free_netdev(netdev);
3d396eb1 1369}
22b5794b 1370static int __netxen_nic_shutdown(struct pci_dev *pdev)
0b72e659 1371{
0b72e659
DP		 1372 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1373 struct net_device *netdev = adapter->netdev;
22b5794b 1374 int retval;
0b72e659
DP		 1375
1376 netif_device_detach(netdev);
1377
6a581e93
DP		 1378 netxen_cancel_fw_work(adapter);
1379
0b72e659
DP		 1380 if (netif_running(netdev))
1381 netxen_nic_down(adapter, netdev);
1382
e424fa9d
AKS		 1383 cancel_work_sync(&adapter->tx_timeout_task);
1384
7042cd8f 1385 netxen_nic_detach(adapter);
0b72e659 1386
22b5794b
AKS		 1387 if (adapter->portnum == 0)
1388 netxen_free_dummy_dma(adapter);
1389
6a581e93
DP		 1390 nx_decr_dev_ref_cnt(adapter);
1391
1392 clear_bit(__NX_RESETTING, &adapter->state);
1393
22b5794b
AKS		 1394 retval = pci_save_state(pdev);
1395 if (retval)
1396 return retval;
0b72e659
DP		 1397
1398 if (netxen_nic_wol_supported(adapter)) {
1399 pci_enable_wake(pdev, PCI_D3cold, 1);
1400 pci_enable_wake(pdev, PCI_D3hot, 1);
1401 }
1402
1403 pci_disable_device(pdev);
0b72e659
DP		 1404
1405 return 0;
1406}
22b5794b
AKS		 1407static void netxen_nic_shutdown(struct pci_dev *pdev)
1408{
1409 if (__netxen_nic_shutdown(pdev))
1410 return;
1411}
1412#ifdef CONFIG_PM
1413static int
1414netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1415{
1416 int retval;
1417
1418 retval = __netxen_nic_shutdown(pdev);
1419 if (retval)
1420 return retval;
1421
1422 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1423 return 0;
1424}
0b72e659
DP		 1425
1426static int
1427netxen_nic_resume(struct pci_dev *pdev)
1428{
1429 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1430 struct net_device *netdev = adapter->netdev;
1431 int err;
1432
1433 pci_set_power_state(pdev, PCI_D0);
1434 pci_restore_state(pdev);
1435
1436 err = pci_enable_device(pdev);
1437 if (err)
1438 return err;
1439
1440 adapter->curr_window = 255;
47abe356 1441 adapter->ahw.ocm_win = -1;
0b72e659 1442
6a581e93 1443 err = netxen_start_firmware(adapter);
0b72e659
DP		 1444 if (err) {
1445 dev_err(&pdev->dev, "failed to start firmware\n");
1446 return err;
1447 }
1448
1449 if (netif_running(netdev)) {
1450 err = netxen_nic_attach(adapter);
1451 if (err)
6a581e93 1452 goto err_out;
0b72e659
DP		 1453
1454 err = netxen_nic_up(adapter, netdev);
1455 if (err)
6a581e93 1456 goto err_out_detach;
0b72e659
DP		 1457
1458 netif_device_attach(netdev);
d0725e4d
AKS		 1459
1460 netxen_config_indev_addr(netdev, NETDEV_UP);
0b72e659
DP		 1461 }
1462
6a581e93 1463 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
07653aa3 1464 return 0;
6a581e93
DP		 1465
1466err_out_detach:
1467 netxen_nic_detach(adapter);
1468err_out:
1469 nx_decr_dev_ref_cnt(adapter);
1470 return err;
0b72e659 1471}
01542cd1 1472#endif
0b72e659 1473
3d396eb1
AK		 1474static int netxen_nic_open(struct net_device *netdev)
1475{
4cf1653a 1476 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1477 int err = 0;
3d396eb1 1478
dcd56fdb
DP		 1479 if (adapter->driver_mismatch)
1480 return -EIO;
1481
7042cd8f
AKS		 1482 err = netxen_nic_attach(adapter);
1483 if (err)
1484 return err;
2956640d 1485
9f5bc7f1
DP		 1486 err = netxen_nic_up(adapter, netdev);
1487 if (err)
1488 goto err_out;
05aaa02d 1489
dcd56fdb 1490 netif_start_queue(netdev);
3d396eb1
AK		 1491
1492 return 0;
2956640d 1493
9f5bc7f1
DP		 1494err_out:
1495 netxen_nic_detach(adapter);
2956640d 1496 return err;
3d396eb1
AK		 1497}
1498
1499/*
1500 * netxen_nic_close - Disables a network interface entry point
1501 */
1502static int netxen_nic_close(struct net_device *netdev)
1503{
3176ff3e 1504 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1505
9f5bc7f1 1506 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1507 return 0;
1508}
1509
1bcfd790
DP		 1510static void
1511netxen_tso_check(struct net_device *netdev,
1512 struct nx_host_tx_ring *tx_ring,
1513 struct cmd_desc_type0 *first_desc,
1514 struct sk_buff *skb)
cd1f8160 1515{
391587c3 1516 u8 opcode = TX_ETHER_PKT;
cdff1036 1517 __be16 protocol = skb->protocol;
028afe71 1518 u16 flags = 0, vid = 0;
1bcfd790 1519 u32 producer;
028afe71 1520 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1bcfd790 1521 struct cmd_desc_type0 *hwdesc;
028afe71 1522 struct vlan_ethhdr *vh;
cdff1036 1523
09640e63 1524 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
028afe71
DP		 1525
1526 vh = (struct vlan_ethhdr *)skb->data;
cdff1036
DP		 1527 protocol = vh->h_vlan_encapsulated_proto;
1528 flags = FLAGS_VLAN_TAGGED;
028afe71
DP		 1529
1530 } else if (vlan_tx_tag_present(skb)) {
1531
1532 flags = FLAGS_VLAN_OOB;
1533 vid = vlan_tx_tag_get(skb);
1534 netxen_set_tx_vlan_tci(first_desc, vid);
1535 vlan_oob = 1;
cdff1036 1536 }
cd1f8160 1537
391587c3
DP		 1538 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1539 skb_shinfo(skb)->gso_size > 0) {
1540
1bcfd790
DP		 1541 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1542
1543 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1544 first_desc->total_hdr_length = hdr_len;
028afe71
DP		 1545 if (vlan_oob) {
1546 first_desc->total_hdr_length += VLAN_HLEN;
1547 first_desc->tcp_hdr_offset = VLAN_HLEN;
1548 first_desc->ip_hdr_offset = VLAN_HLEN;
1549 /* Only in case of TSO on vlan device */
1550 flags |= FLAGS_VLAN_TAGGED;
1551 }
391587c3 1552
09640e63 1553 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3 1554 TX_TCP_LSO6 : TX_TCP_LSO;
1bcfd790 1555 tso = 1;
cd1f8160
DP		 1556
1557 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1558 u8 l4proto;
1559
09640e63 1560 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1561 l4proto = ip_hdr(skb)->protocol;
1562
1563 if (l4proto == IPPROTO_TCP)
1564 opcode = TX_TCP_PKT;
1565 else if(l4proto == IPPROTO_UDP)
1566 opcode = TX_UDP_PKT;
09640e63 1567 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1568 l4proto = ipv6_hdr(skb)->nexthdr;
1569
1570 if (l4proto == IPPROTO_TCP)
1571 opcode = TX_TCPV6_PKT;
1572 else if(l4proto == IPPROTO_UDP)
1573 opcode = TX_UDPV6_PKT;
1574 }
cd1f8160 1575 }
028afe71
DP		 1576
1577 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1578 first_desc->ip_hdr_offset += skb_network_offset(skb);
1bcfd790
DP		 1579 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1580
1581 if (!tso)
1582 return;
1583
1584 /* For LSO, we need to copy the MAC/IP/TCP headers into
1585 * the descriptor ring
1586 */
1587 producer = tx_ring->producer;
1588 copied = 0;
1589 offset = 2;
1590
028afe71
DP		 1591 if (vlan_oob) {
1592 /* Create a TSO vlan header template for firmware */
1593
1594 hwdesc = &tx_ring->desc_head[producer];
1595 tx_ring->cmd_buf_arr[producer].skb = NULL;
1596
1597 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1598 hdr_len + VLAN_HLEN);
1599
1600 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1601 skb_copy_from_linear_data(skb, vh, 12);
1602 vh->h_vlan_proto = htons(ETH_P_8021Q);
1603 vh->h_vlan_TCI = htons(vid);
1604 skb_copy_from_linear_data_offset(skb, 12,
1605 (char *)vh + 16, copy_len - 16);
1606
545eb370 1607 copied = copy_len - VLAN_HLEN;
028afe71
DP		 1608 offset = 0;
1609
1610 producer = get_next_index(producer, tx_ring->num_desc);
1611 }
1612
1bcfd790
DP		 1613 while (copied < hdr_len) {
1614
1615 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1616 (hdr_len - copied));
1617
1618 hwdesc = &tx_ring->desc_head[producer];
1619 tx_ring->cmd_buf_arr[producer].skb = NULL;
1620
1621 skb_copy_from_linear_data_offset(skb, copied,
1622 (char *)hwdesc + offset, copy_len);
1623
1624 copied += copy_len;
1625 offset = 0;
1626
1627 producer = get_next_index(producer, tx_ring->num_desc);
1628 }
1629
1630 tx_ring->producer = producer;
1631 barrier();
cd1f8160
DP		 1632}
1633
ce644ed4
DP		 1634static int
1635netxen_map_tx_skb(struct pci_dev *pdev,
1636 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
6f703406 1637{
ce644ed4
DP		 1638 struct netxen_skb_frag *nf;
1639 struct skb_frag_struct *frag;
1640 int i, nr_frags;
1641 dma_addr_t map;
1642
1643 nr_frags = skb_shinfo(skb)->nr_frags;
1644 nf = &pbuf->frag_array[0];
1645
1646 map = pci_map_single(pdev, skb->data,
1647 skb_headlen(skb), PCI_DMA_TODEVICE);
1648 if (pci_dma_mapping_error(pdev, map))
1649 goto out_err;
6f703406 1650
ce644ed4
DP		 1651 nf->dma = map;
1652 nf->length = skb_headlen(skb);
1653
1654 for (i = 0; i < nr_frags; i++) {
1655 frag = &skb_shinfo(skb)->frags[i];
1656 nf = &pbuf->frag_array[i+1];
1657
1658 map = pci_map_page(pdev, frag->page, frag->page_offset,
1659 frag->size, PCI_DMA_TODEVICE);
1660 if (pci_dma_mapping_error(pdev, map))
1661 goto unwind;
1662
1663 nf->dma = map;
1664 nf->length = frag->size;
1665 }
1666
1667 return 0;
6f703406 1668
ce644ed4 1669unwind:
cf503e8f
DP		 1670 while (--i >= 0) {
1671 nf = &pbuf->frag_array[i+1];
ce644ed4 1672 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
6f703406 1673 }
ce644ed4
DP		 1674
1675 nf = &pbuf->frag_array[0];
1676 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1677
1678out_err:
1679 return -ENOMEM;
6f703406
DP		 1680}
1681
d32cc3d2
DP		 1682static inline void
1683netxen_clear_cmddesc(u64 *desc)
1684{
1bcfd790
DP		 1685 desc[0] = 0ULL;
1686 desc[2] = 0ULL;
d32cc3d2
DP		 1687}
1688
61357325 1689static netdev_tx_t
d32cc3d2 1690netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1691{
3176ff3e 1692 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1693 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
391587c3 1694 struct netxen_cmd_buffer *pbuf;
3d396eb1 1695 struct netxen_skb_frag *buffrag;
1bcfd790
DP		 1696 struct cmd_desc_type0 *hwdesc, *first_desc;
1697 struct pci_dev *pdev;
391587c3 1698 int i, k;
3d396eb1 1699
cb2107be 1700 u32 producer;
ce644ed4 1701 int frag_count, no_of_desc;
d877f1e3 1702 u32 num_txd = tx_ring->num_desc;
3d396eb1 1703
3d396eb1
AK		 1704 frag_count = skb_shinfo(skb)->nr_frags + 1;
1705
d877f1e3 1706 /* 4 fragments per cmd des */
3d396eb1 1707 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1708
fa9859ef 1709 if (unlikely(no_of_desc + 2 > netxen_tx_avail(tx_ring))) {
ba53e6b4 1710 netif_stop_queue(netdev);
ba53e6b4 1711 return NETDEV_TX_BUSY;
53a01e00 1712 }
3d396eb1 1713
cb2107be 1714 producer = tx_ring->producer;
ce644ed4 1715 pbuf = &tx_ring->cmd_buf_arr[producer];
cb2107be 1716
1bcfd790 1717 pdev = adapter->pdev;
391587c3 1718
ce644ed4 1719 if (netxen_map_tx_skb(pdev, skb, pbuf))
1bcfd790 1720 goto drop_packet;
391587c3 1721
3d396eb1 1722 pbuf->skb = skb;
3d396eb1 1723 pbuf->frag_count = frag_count;
6f703406 1724
1bcfd790
DP		 1725 first_desc = hwdesc = &tx_ring->desc_head[producer];
1726 netxen_clear_cmddesc((u64 *)hwdesc);
3d396eb1 1727
ce644ed4
DP		 1728 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1729 netxen_set_tx_port(first_desc, adapter->portnum);
3d396eb1 1730
ce644ed4 1731 for (i = 0; i < frag_count; i++) {
3d396eb1 1732
ce644ed4
DP		 1733 k = i % 4;
1734
1735 if ((k == 0) && (i > 0)) {
1736 /* move to next desc.*/
ba53e6b4 1737 producer = get_next_index(producer, num_txd);
d877f1e3 1738 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1739 netxen_clear_cmddesc((u64 *)hwdesc);
ce644ed4 1740 tx_ring->cmd_buf_arr[producer].skb = NULL;
6f703406 1741 }
3d396eb1 1742
ce644ed4 1743 buffrag = &pbuf->frag_array[i];
3d396eb1 1744
ce644ed4 1745 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
3d396eb1
AK		 1746 switch (k) {
1747 case 0:
ce644ed4 1748 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1749 break;
1750 case 1:
ce644ed4 1751 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1752 break;
1753 case 2:
ce644ed4 1754 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1755 break;
1756 case 3:
ce644ed4 1757 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1758 break;
1759 }
3d396eb1 1760 }
ce644ed4 1761
1bcfd790 1762 tx_ring->producer = get_next_index(producer, num_txd);
3d396eb1 1763
1bcfd790 1764 netxen_tso_check(netdev, tx_ring, first_desc, skb);
6c80b18d 1765
cb2107be 1766 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1767
1bcfd790 1768 adapter->stats.txbytes += skb->len;
ba53e6b4 1769 adapter->stats.xmitcalled++;
3d396eb1 1770
3d396eb1 1771 return NETDEV_TX_OK;
6f703406
DP		 1772
1773drop_packet:
1774 adapter->stats.txdropped++;
1775 dev_kfree_skb_any(skb);
1776 return NETDEV_TX_OK;
3d396eb1
AK		 1777}
1778
a97342f9
DP		 1779static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1780{
1781 struct net_device *netdev = adapter->netdev;
1782 uint32_t temp, temp_state, temp_val;
1783 int rv = 0;
1784
f98a9f69 1785 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1786
1787 temp_state = nx_get_temp_state(temp);
1788 temp_val = nx_get_temp_val(temp);
1789
1790 if (temp_state == NX_TEMP_PANIC) {
1791 printk(KERN_ALERT
1792 "%s: Device temperature %d degrees C exceeds"
1793 " maximum allowed. Hardware has been shut down.\n",
e4135c2d 1794 netdev->name, temp_val);
a97342f9
DP		 1795 rv = 1;
1796 } else if (temp_state == NX_TEMP_WARN) {
1797 if (adapter->temp == NX_TEMP_NORMAL) {
1798 printk(KERN_ALERT
1799 "%s: Device temperature %d degrees C "
1800 "exceeds operating range."
1801 " Immediate action needed.\n",
e4135c2d 1802 netdev->name, temp_val);
a97342f9
DP		 1803 }
1804 } else {
1805 if (adapter->temp == NX_TEMP_WARN) {
1806 printk(KERN_INFO
1807 "%s: Device temperature is now %d degrees C"
e4135c2d 1808 " in normal range.\n", netdev->name,
a97342f9
DP		 1809 temp_val);
1810 }
1811 }
1812 adapter->temp = temp_state;
1813 return rv;
1814}
1815
3bf26ce3 1816void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1817{
1818 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1819
1820 if (adapter->ahw.linkup && !linkup) {
1821 printk(KERN_INFO "%s: %s NIC Link is down\n",
1822 netxen_nic_driver_name, netdev->name);
1823 adapter->ahw.linkup = 0;
1824 if (netif_running(netdev)) {
1825 netif_carrier_off(netdev);
1826 netif_stop_queue(netdev);
1827 }
e424fa9d 1828 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1829 } else if (!adapter->ahw.linkup && linkup) {
1830 printk(KERN_INFO "%s: %s NIC Link is up\n",
1831 netxen_nic_driver_name, netdev->name);
1832 adapter->ahw.linkup = 1;
1833 if (netif_running(netdev)) {
1834 netif_carrier_on(netdev);
1835 netif_wake_queue(netdev);
1836 }
e424fa9d 1837 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1838 }
1839}
1840
3bf26ce3
DP		 1841static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1842{
1843 u32 val, port, linkup;
1844
1845 port = adapter->physical_port;
1846
1847 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1848 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1849 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1850 linkup = (val == XG_LINK_UP_P3);
1851 } else {
f98a9f69 1852 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1853 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1854 linkup = (val >> port) & 1;
1855 else {
1856 val = (val >> port*8) & 0xff;
1857 linkup = (val == XG_LINK_UP);
1858 }
1859 }
1860
1861 netxen_advert_link_change(adapter, linkup);
1862}
1863
3d396eb1
AK		 1864static void netxen_tx_timeout(struct net_device *netdev)
1865{
e424fa9d 1866 struct netxen_adapter *adapter = netdev_priv(netdev);
f17443f4 1867
6a581e93
DP		 1868 if (test_bit(__NX_RESETTING, &adapter->state))
1869 return;
1870
f17443f4 1871 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
e424fa9d 1872 schedule_work(&adapter->tx_timeout_task);
3d396eb1
AK		 1873}
1874
74c520da 1875static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1876{
4790654c 1877 struct netxen_adapter *adapter =
3176ff3e 1878 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1879
b2af9cb0
DP		 1880 if (!netif_running(adapter->netdev))
1881 return;
1882
74c520da 1883 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
6a581e93
DP		 1884 return;
1885
74c520da
AKS		 1886 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
1887 goto request_reset;
1888
1889 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1890 /* try to scrub interrupt */
1891 netxen_napi_disable(adapter);
ba53e6b4 1892
74c520da 1893 adapter->netdev->trans_start = jiffies;
ba53e6b4 1894
74c520da
AKS		 1895 netxen_napi_enable(adapter);
1896
1897 netif_wake_queue(adapter->netdev);
1898
a598ae17 1899 clear_bit(__NX_RESETTING, &adapter->state);
74c520da
AKS		 1900
1901 } else {
a598ae17 1902 clear_bit(__NX_RESETTING, &adapter->state);
74c520da
AKS		 1903 if (!netxen_nic_reset_context(adapter)) {
1904 adapter->netdev->trans_start = jiffies;
a598ae17 1905 return;
74c520da
AKS		 1906 }
1907
1908 /* context reset failed, fall through for fw reset */
1909 }
1910
1911request_reset:
1912 adapter->need_fw_reset = 1;
3d396eb1
AK		 1913}
1914
a97342f9
DP		 1915struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1916{
1917 struct netxen_adapter *adapter = netdev_priv(netdev);
5a4d6311 1918 struct net_device_stats *stats = &netdev->stats;
a97342f9
DP		 1919
1920 memset(stats, 0, sizeof(*stats));
1921
1bb482f8 1922 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
e98e3350 1923 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1924 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1925 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1926 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1927 stats->tx_dropped = adapter->stats.txdropped;
1928
1929 return stats;
1930}
1931
e4c93c81 1932static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1933{
d8b100c5
DP		 1934 struct nx_host_sds_ring *sds_ring = data;
1935 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1936 u32 status = 0;
1937
195c5f98 1938 status = readl(adapter->isr_int_vec);
d71e1be8 1939
195c5f98 1940 if (!(status & adapter->int_vec_bit))
05aaa02d 1941 return IRQ_NONE;
e01872af 1942
195c5f98 1943 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
d71e1be8 1944 /* check interrupt state machine, to be sure */
195c5f98 1945 status = readl(adapter->crb_int_state_reg);
d71e1be8
DP		 1946 if (!ISR_LEGACY_INT_TRIGGERED(status))
1947 return IRQ_NONE;
1948
092bc571
DP		 1949 } else {
1950 unsigned long our_int = 0;
d71e1be8 1951
195c5f98 1952 our_int = readl(adapter->crb_int_state_reg);
092bc571 1953
d71e1be8 1954 /* not our interrupt */
092bc571 1955 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1956 return IRQ_NONE;
1957
092bc571 1958 /* claim interrupt */
195c5f98 1959 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
e01872af 1960
195c5f98 1961 /* clear interrupt */
d8b100c5 1962 netxen_nic_disable_int(sds_ring);
195c5f98 1963 }
092bc571 1964
195c5f98 1965 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 1966 /* read twice to ensure write is flushed */
195c5f98
AKS		 1967 readl(adapter->isr_int_vec);
1968 readl(adapter->isr_int_vec);
092bc571 1969
d8b100c5 1970 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1971
1972 return IRQ_HANDLED;
1973}
1974
e4c93c81 1975static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1976{
d8b100c5
DP		 1977 struct nx_host_sds_ring *sds_ring = data;
1978 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1979
092bc571 1980 /* clear interrupt */
195c5f98 1981 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 1982
d8b100c5 1983 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1984 return IRQ_HANDLED;
1985}
1986
b3df68f8
DP		 1987static irqreturn_t netxen_msix_intr(int irq, void *data)
1988{
d8b100c5 1989 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1990
d8b100c5 1991 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1992 return IRQ_HANDLED;
1993}
1994
bea3348e 1995static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1996{
d8b100c5
DP		 1997 struct nx_host_sds_ring *sds_ring =
1998 container_of(napi, struct nx_host_sds_ring, napi);
1999
2000 struct netxen_adapter *adapter = sds_ring->adapter;
2001
05aaa02d 2002 int tx_complete;
bea3348e 2003 int work_done;
3d396eb1 2004
05aaa02d 2005 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 2006
d8b100c5 2007 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 2008
05aaa02d 2009 if ((work_done < budget) && tx_complete) {
d8b100c5 2010 napi_complete(&sds_ring->napi);
b2af9cb0
DP		 2011 if (netif_running(adapter->netdev))
2012 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 2013 }
2014
bea3348e 2015 return work_done;
3d396eb1
AK		 2016}
2017
2018#ifdef CONFIG_NET_POLL_CONTROLLER
2019static void netxen_nic_poll_controller(struct net_device *netdev)
2020{
3176ff3e 2021 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 2022 disable_irq(adapter->irq);
1494a814 2023 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 2024 enable_irq(adapter->irq);
2025}
2026#endif
3d396eb1 2027
6a581e93
DP		 2028static int
2029nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2030{
2031 int count;
2032 if (netxen_api_lock(adapter))
2033 return -EIO;
2034
2035 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2036
2037 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2038
2039 netxen_api_unlock(adapter);
2040 return count;
2041}
2042
2043static int
2044nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2045{
2046 int count;
2047 if (netxen_api_lock(adapter))
2048 return -EIO;
2049
2050 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2051 WARN_ON(count == 0);
2052
2053 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2054
2055 if (count == 0)
2056 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2057
2058 netxen_api_unlock(adapter);
2059 return count;
2060}
2061
74c520da
AKS		 2062static void
2063nx_dev_request_reset(struct netxen_adapter *adapter)
2064{
2065 u32 state;
2066
2067 if (netxen_api_lock(adapter))
2068 return;
2069
2070 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2071
2072 if (state != NX_DEV_INITALIZING)
2073 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2074
2075 netxen_api_unlock(adapter);
2076}
2077
6a581e93
DP		 2078static int
2079netxen_can_start_firmware(struct netxen_adapter *adapter)
2080{
2081 int count;
2082 int can_start = 0;
2083
2084 if (netxen_api_lock(adapter))
2085 return 0;
2086
2087 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2088
2089 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2090 count = 0;
2091
2092 if (count == 0) {
2093 can_start = 1;
2094 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2095 }
2096
2097 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2098
2099 netxen_api_unlock(adapter);
2100
2101 return can_start;
2102}
2103
2104static void
2105netxen_schedule_work(struct netxen_adapter *adapter,
2106 work_func_t func, int delay)
2107{
2108 INIT_DELAYED_WORK(&adapter->fw_work, func);
2109 schedule_delayed_work(&adapter->fw_work, delay);
2110}
2111
2112static void
2113netxen_cancel_fw_work(struct netxen_adapter *adapter)
2114{
2115 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2116 msleep(10);
2117
2118 cancel_delayed_work_sync(&adapter->fw_work);
2119}
2120
2121static void
2122netxen_attach_work(struct work_struct *work)
2123{
2124 struct netxen_adapter *adapter = container_of(work,
2125 struct netxen_adapter, fw_work.work);
2126 struct net_device *netdev = adapter->netdev;
2127 int err = 0;
2128
2129 if (netif_running(netdev)) {
2130 err = netxen_nic_attach(adapter);
2131 if (err)
2132 goto done;
2133
2134 err = netxen_nic_up(adapter, netdev);
2135 if (err) {
2136 netxen_nic_detach(adapter);
2137 goto done;
2138 }
2139
d0725e4d 2140 netxen_config_indev_addr(netdev, NETDEV_UP);
6a581e93
DP		 2141 }
2142
2143 netif_device_attach(netdev);
2144
2145done:
2146 adapter->fw_fail_cnt = 0;
2147 clear_bit(__NX_RESETTING, &adapter->state);
2148 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2149}
2150
2151static void
2152netxen_fwinit_work(struct work_struct *work)
2153{
2154 struct netxen_adapter *adapter = container_of(work,
2155 struct netxen_adapter, fw_work.work);
2156 int dev_state;
2157
2158 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2159
2160 switch (dev_state) {
2161 case NX_DEV_COLD:
2162 case NX_DEV_READY:
74c520da
AKS		 2163 if (!netxen_start_firmware(adapter)) {
2164 netxen_schedule_work(adapter, netxen_attach_work, 0);
2165 return;
2166 }
2167 break;
6a581e93
DP		 2168
2169 case NX_DEV_INITALIZING:
2170 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2171 netxen_schedule_work(adapter,
2172 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2173 return;
2174 }
2175 break;
2176
2177 case NX_DEV_FAILED:
2178 default:
2179 break;
2180 }
2181
2182 nx_incr_dev_ref_cnt(adapter);
2183 clear_bit(__NX_RESETTING, &adapter->state);
2184}
2185
2186static void
2187netxen_detach_work(struct work_struct *work)
2188{
2189 struct netxen_adapter *adapter = container_of(work,
2190 struct netxen_adapter, fw_work.work);
2191 struct net_device *netdev = adapter->netdev;
2192 int ref_cnt, delay;
2193 u32 status;
2194
2195 netif_device_detach(netdev);
2196
2197 if (netif_running(netdev))
2198 netxen_nic_down(adapter, netdev);
2199
2200 netxen_nic_detach(adapter);
2201
2202 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2203
2204 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2205
2206 if (status & NX_RCODE_FATAL_ERROR)
2207 return;
2208
2209 if (adapter->temp == NX_TEMP_PANIC)
2210 return;
2211
2212 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2213
2214 adapter->fw_wait_cnt = 0;
2215 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2216}
2217
2218static int
2219netxen_check_health(struct netxen_adapter *adapter)
2220{
2221 u32 state, heartbit;
2222 struct net_device *netdev = adapter->netdev;
2223
2224 if (netxen_nic_check_temp(adapter))
2225 goto detach;
2226
74c520da
AKS		 2227 if (adapter->need_fw_reset) {
2228 nx_dev_request_reset(adapter);
2229 goto detach;
2230 }
2231
6a581e93
DP		 2232 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2233 if (state == NX_DEV_NEED_RESET)
2234 goto detach;
2235
2236 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2237 return 0;
2238
2239 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2240 if (heartbit != adapter->heartbit) {
2241 adapter->heartbit = heartbit;
2242 adapter->fw_fail_cnt = 0;
2243 return 0;
2244 }
2245
2246 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2247 return 0;
2248
2249 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2250
2251 dev_info(&netdev->dev, "firmware hang detected\n");
2252
2253detach:
2254 if (!test_and_set_bit(__NX_RESETTING, &adapter->state))
2255 netxen_schedule_work(adapter, netxen_detach_work, 0);
2256 return 1;
2257}
2258
2259static void
2260netxen_fw_poll_work(struct work_struct *work)
2261{
2262 struct netxen_adapter *adapter = container_of(work,
2263 struct netxen_adapter, fw_work.work);
2264
2265 if (test_bit(__NX_RESETTING, &adapter->state))
2266 goto reschedule;
2267
2268 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2269 if (!adapter->has_link_events) {
2270
2271 netxen_nic_handle_phy_intr(adapter);
2272
2273 if (adapter->link_changed)
2274 netxen_nic_set_link_parameters(adapter);
2275 }
2276 }
2277
2278 if (netxen_check_health(adapter))
2279 return;
2280
2281reschedule:
2282 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2283}
2284
fa3ce355
NK		 2285static ssize_t
2286netxen_store_bridged_mode(struct device *dev,
2287 struct device_attribute *attr, const char *buf, size_t len)
2288{
2289 struct net_device *net = to_net_dev(dev);
2290 struct netxen_adapter *adapter = netdev_priv(net);
2291 unsigned long new;
2292 int ret = -EINVAL;
2293
2294 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2295 goto err_out;
2296
2297 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2298 goto err_out;
2299
2300 if (strict_strtoul(buf, 2, &new))
2301 goto err_out;
2302
2303 if (!netxen_config_bridged_mode(adapter, !!new))
2304 ret = len;
2305
2306err_out:
2307 return ret;
2308}
2309
2310static ssize_t
2311netxen_show_bridged_mode(struct device *dev,
2312 struct device_attribute *attr, char *buf)
2313{
2314 struct net_device *net = to_net_dev(dev);
2315 struct netxen_adapter *adapter;
2316 int bridged_mode = 0;
2317
2318 adapter = netdev_priv(net);
2319
2320 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2321 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2322
2323 return sprintf(buf, "%d\n", bridged_mode);
2324}
2325
2326static struct device_attribute dev_attr_bridged_mode = {
2327 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2328 .show = netxen_show_bridged_mode,
2329 .store = netxen_store_bridged_mode,
2330};
2331
2332static void
2333netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2334{
2335 struct net_device *netdev = adapter->netdev;
2336 struct device *dev = &netdev->dev;
2337
2338 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2339 /* bridged_mode control */
2340 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2341 dev_warn(&netdev->dev,
2342 "failed to create bridged_mode sysfs entry\n");
2343 }
2344 }
2345}
2346
2347static void
2348netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2349{
2350 struct net_device *netdev = adapter->netdev;
2351 struct device *dev = &netdev->dev;
2352
2353 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2354 device_remove_file(dev, &dev_attr_bridged_mode);
2355}
2356
044824d9
DP		 2357#ifdef CONFIG_INET
2358
6598b169
DP		 2359#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2360
2361static int
2362netxen_destip_supported(struct netxen_adapter *adapter)
2363{
2364 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2365 return 0;
2366
2367 if (adapter->ahw.cut_through)
2368 return 0;
2369
2370 return 1;
2371}
2372
d0725e4d
AKS		 2373static void
2374netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2375{
2376 struct in_device *indev;
2377 struct netxen_adapter *adapter = netdev_priv(dev);
2378
3db76755 2379 if (!netxen_destip_supported(adapter))
d0725e4d
AKS		 2380 return;
2381
2382 indev = in_dev_get(dev);
2383 if (!indev)
2384 return;
2385
2386 for_ifa(indev) {
2387 switch (event) {
2388 case NETDEV_UP:
2389 netxen_config_ipaddr(adapter,
2390 ifa->ifa_address, NX_IP_UP);
2391 break;
2392 case NETDEV_DOWN:
2393 netxen_config_ipaddr(adapter,
2394 ifa->ifa_address, NX_IP_DOWN);
2395 break;
2396 default:
2397 break;
2398 }
2399 } endfor_ifa(indev);
2400
2401 in_dev_put(indev);
2402 return;
2403}
2404
6598b169
DP		 2405static int netxen_netdev_event(struct notifier_block *this,
2406 unsigned long event, void *ptr)
2407{
2408 struct netxen_adapter *adapter;
2409 struct net_device *dev = (struct net_device *)ptr;
6598b169
DP		 2410
2411recheck:
2412 if (dev == NULL)
2413 goto done;
2414
2415 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2416 dev = vlan_dev_real_dev(dev);
2417 goto recheck;
2418 }
2419
2420 if (!is_netxen_netdev(dev))
2421 goto done;
2422
2423 adapter = netdev_priv(dev);
2424
d0725e4d 2425 if (!adapter)
6598b169
DP		 2426 goto done;
2427
2428 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2429 goto done;
2430
d0725e4d 2431 netxen_config_indev_addr(dev, event);
6598b169
DP		 2432done:
2433 return NOTIFY_DONE;
2434}
2435
2436static int
2437netxen_inetaddr_event(struct notifier_block *this,
2438 unsigned long event, void *ptr)
2439{
2440 struct netxen_adapter *adapter;
2441 struct net_device *dev;
2442
2443 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2444
2445 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2446
2447recheck:
2448 if (dev == NULL || !netif_running(dev))
2449 goto done;
2450
2451 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2452 dev = vlan_dev_real_dev(dev);
2453 goto recheck;
2454 }
2455
2456 if (!is_netxen_netdev(dev))
2457 goto done;
2458
2459 adapter = netdev_priv(dev);
2460
2461 if (!adapter || !netxen_destip_supported(adapter))
2462 goto done;
2463
2464 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2465 goto done;
2466
2467 switch (event) {
2468 case NETDEV_UP:
2469 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2470 break;
2471 case NETDEV_DOWN:
2472 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2473 break;
2474 default:
2475 break;
2476 }
2477
2478done:
2479 return NOTIFY_DONE;
2480}
2481
2482static struct notifier_block netxen_netdev_cb = {
2483 .notifier_call = netxen_netdev_event,
2484};
2485
2486static struct notifier_block netxen_inetaddr_cb = {
2487 .notifier_call = netxen_inetaddr_event,
2488};
9feae56c
RD		 2489#else
2490static void
2491netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2492{ }
044824d9 2493#endif
6598b169 2494
3d396eb1
AK		 2495static struct pci_driver netxen_driver = {
2496 .name = netxen_nic_driver_name,
2497 .id_table = netxen_pci_tbl,
2498 .probe = netxen_nic_probe,
0b72e659 2499 .remove = __devexit_p(netxen_nic_remove),
01542cd1 2500#ifdef CONFIG_PM
0b72e659 2501 .suspend = netxen_nic_suspend,
22b5794b 2502 .resume = netxen_nic_resume,
01542cd1 2503#endif
22b5794b 2504 .shutdown = netxen_nic_shutdown
3d396eb1
AK		 2505};
2506
3d396eb1
AK		 2507static int __init netxen_init_module(void)
2508{
ff4fbd43
DP		 2509 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2510
044824d9 2511#ifdef CONFIG_INET
6598b169
DP		 2512 register_netdevice_notifier(&netxen_netdev_cb);
2513 register_inetaddr_notifier(&netxen_inetaddr_cb);
044824d9 2514#endif
6598b169 2515
184231bd 2516 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 2517}
2518
2519module_init(netxen_init_module);
2520
2521static void __exit netxen_exit_module(void)
2522{
3d396eb1 2523 pci_unregister_driver(&netxen_driver);
6598b169 2524
044824d9 2525#ifdef CONFIG_INET
6598b169
DP		 2526 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2527 unregister_netdevice_notifier(&netxen_netdev_cb);
044824d9 2528#endif
3d396eb1
AK		 2529}
2530
2531module_exit(netxen_exit_module);
Linux 6.x block layer and io_uring tree(s)