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netns: fix net.ipv6.route.gc_min_interval_ms in netns
[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>
0531d7b8 37#include <linux/sysfs.h>
1494a814 38
c25c0b9b 39MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Converged Ethernet Driver");
3d396eb1
AK		 40MODULE_LICENSE("GPL");
41MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
7e8e5d97
DP		 42MODULE_FIRMWARE(NX_P2_MN_ROMIMAGE_NAME);
43MODULE_FIRMWARE(NX_P3_CT_ROMIMAGE_NAME);
44MODULE_FIRMWARE(NX_P3_MN_ROMIMAGE_NAME);
45MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
3d396eb1 46
ceded32f 47char netxen_nic_driver_name[] = "netxen_nic";
c25c0b9b 48static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
cb8011ad 49 NETXEN_NIC_LINUX_VERSIONID;
3d396eb1 50
2956640d
DP		 51static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
52
53/* Default to restricted 1G auto-neg mode */
54static int wol_port_mode = 5;
55
56static int use_msi = 1;
57
58static int use_msi_x = 1;
59
caa2dd53
NK		 60static unsigned long auto_fw_reset = AUTO_FW_RESET_ENABLED;
61
3d396eb1 62static int __devinit netxen_nic_probe(struct pci_dev *pdev,
2956640d 63 const struct pci_device_id *ent);
3d396eb1
AK		 64static void __devexit netxen_nic_remove(struct pci_dev *pdev);
65static int netxen_nic_open(struct net_device *netdev);
66static int netxen_nic_close(struct net_device *netdev);
61357325
SH		 67static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
68 struct net_device *);
3d396eb1 69static void netxen_tx_timeout(struct net_device *netdev);
74c520da 70static void netxen_tx_timeout_task(struct work_struct *work);
6a581e93
DP		 71static void netxen_fw_poll_work(struct work_struct *work);
72static void netxen_schedule_work(struct netxen_adapter *adapter,
73 work_func_t func, int delay);
74static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
bea3348e 75static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 76#ifdef CONFIG_NET_POLL_CONTROLLER
77static void netxen_nic_poll_controller(struct net_device *netdev);
78#endif
fa3ce355
NK		 79
80static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
81static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
70f9cf89
DP		 82static void netxen_create_diag_entries(struct netxen_adapter *adapter);
83static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
fa3ce355 84
6a581e93
DP		 85static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
86static int netxen_can_start_firmware(struct netxen_adapter *adapter);
87
1494a814 88static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 89static irqreturn_t netxen_msi_intr(int irq, void *data);
b3df68f8 90static irqreturn_t netxen_msix_intr(int irq, void *data);
3d396eb1 91
d0725e4d
AKS		 92static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
93
3d396eb1 94/* PCI Device ID Table */
70081ac5 95#define ENTRY(device) \
040dec3b 96 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 97 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
98
3d396eb1 99static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 100 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
101 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
102 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
103 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
104 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
105 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
106 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
107 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 108 {0,}
109};
110
111MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
112
7830b22c
DP		 113static uint32_t crb_cmd_producer[4] = {
114 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
115 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
116};
117
c9fc891f 118void
3ce06a32 119netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
cb2107be 120 struct nx_host_tx_ring *tx_ring)
3176ff3e 121{
195c5f98 122 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
cb2107be
DP		 123
124 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
125 netif_stop_queue(adapter->netdev);
126 smp_mb();
127 }
3176ff3e
MT		 128}
129
7830b22c
DP		 130static uint32_t crb_cmd_consumer[4] = {
131 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
132 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
133};
134
3ce06a32
DP		 135static inline void
136netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
cb2107be 137 struct nx_host_tx_ring *tx_ring)
3176ff3e 138{
195c5f98 139 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
3176ff3e
MT		 140}
141
2956640d 142static uint32_t msi_tgt_status[8] = {
443be796 143 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 144 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
145 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
146 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 147};
148
2956640d
DP		 149static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
150
d8b100c5 151static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 152{
d8b100c5
DP		 153 struct netxen_adapter *adapter = sds_ring->adapter;
154
195c5f98 155 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 156}
157
d8b100c5 158static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 159{
d8b100c5
DP		 160 struct netxen_adapter *adapter = sds_ring->adapter;
161
195c5f98 162 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 163
092bc571 164 if (!NETXEN_IS_MSI_FAMILY(adapter))
195c5f98 165 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
4638aef1
SH		 166}
167
71dcddbd
DP		 168static int
169netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
170{
171 int size = sizeof(struct nx_host_sds_ring) * count;
172
173 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
174
175 return (recv_ctx->sds_rings == NULL);
176}
177
d8b100c5 178static void
71dcddbd
DP		 179netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
180{
181 if (recv_ctx->sds_rings != NULL)
182 kfree(recv_ctx->sds_rings);
232e7d68
DP		 183
184 recv_ctx->sds_rings = NULL;
71dcddbd
DP		 185}
186
187static int
d8b100c5
DP		 188netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
189{
190 int ring;
191 struct nx_host_sds_ring *sds_ring;
192 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
193
71dcddbd 194 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
f17443f4 195 return -ENOMEM;
71dcddbd 196
d8b100c5
DP		 197 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
198 sds_ring = &recv_ctx->sds_rings[ring];
199 netif_napi_add(netdev, &sds_ring->napi,
200 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
201 }
71dcddbd
DP		 202
203 return 0;
d8b100c5
DP		 204}
205
232e7d68
DP		 206static void
207netxen_napi_del(struct netxen_adapter *adapter)
208{
209 int ring;
210 struct nx_host_sds_ring *sds_ring;
211 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
212
213 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
214 sds_ring = &recv_ctx->sds_rings[ring];
215 netif_napi_del(&sds_ring->napi);
216 }
217
218 netxen_free_sds_rings(&adapter->recv_ctx);
219}
220
d8b100c5
DP		 221static void
222netxen_napi_enable(struct netxen_adapter *adapter)
223{
224 int ring;
225 struct nx_host_sds_ring *sds_ring;
226 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
227
228 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
229 sds_ring = &recv_ctx->sds_rings[ring];
230 napi_enable(&sds_ring->napi);
231 netxen_nic_enable_int(sds_ring);
232 }
233}
234
235static void
236netxen_napi_disable(struct netxen_adapter *adapter)
237{
238 int ring;
239 struct nx_host_sds_ring *sds_ring;
240 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
241
242 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
243 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 244 netxen_nic_disable_int(sds_ring);
b2af9cb0
DP		 245 napi_synchronize(&sds_ring->napi);
246 napi_disable(&sds_ring->napi);
d8b100c5
DP		 247 }
248}
249
50c643e7 250static int nx_set_dma_mask(struct netxen_adapter *adapter)
2956640d
DP		 251{
252 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 253 uint64_t mask, cmask;
254
255 adapter->pci_using_dac = 0;
2956640d 256
6afd142f 257 mask = DMA_BIT_MASK(32);
6afd142f 258 cmask = DMA_BIT_MASK(32);
1f434f63 259
50c643e7 260 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1f434f63 261#ifndef CONFIG_IA64
6afd142f 262 mask = DMA_BIT_MASK(35);
1f434f63 263#endif
50c643e7
DP		 264 } else {
265 mask = DMA_BIT_MASK(39);
266 cmask = mask;
267 }
268
2956640d 269 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 270 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 271 adapter->pci_using_dac = 1;
272 return 0;
273 }
2956640d 274
1f434f63
DP		 275 return -EIO;
276}
277
278/* Update addressable range if firmware supports it */
279static int
280nx_update_dma_mask(struct netxen_adapter *adapter)
281{
282 int change, shift, err;
50c643e7 283 uint64_t mask, old_mask, old_cmask;
1f434f63
DP		 284 struct pci_dev *pdev = adapter->pdev;
285
286 change = 0;
287
f98a9f69 288 shift = NXRD32(adapter, CRB_DMA_SHIFT);
f60f7856 289 if (shift > 32)
1f434f63
DP		 290 return 0;
291
292 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
293 change = 1;
294 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
295 change = 1;
296
297 if (change) {
298 old_mask = pdev->dma_mask;
50c643e7
DP		 299 old_cmask = pdev->dev.coherent_dma_mask;
300
f60f7856 301 mask = DMA_BIT_MASK(32+shift);
1f434f63
DP		 302
303 err = pci_set_dma_mask(pdev, mask);
304 if (err)
50c643e7
DP		 305 goto err_out;
306
307 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
308
309 err = pci_set_consistent_dma_mask(pdev, mask);
310 if (err)
311 goto err_out;
312 }
313 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
2956640d
DP		 314 }
315
2956640d 316 return 0;
50c643e7
DP		 317
318err_out:
319 pci_set_dma_mask(pdev, old_mask);
320 pci_set_consistent_dma_mask(pdev, old_cmask);
321 return err;
2956640d
DP		 322}
323
2956640d
DP		 324static int
325netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
326{
27c915a4 327 u32 val, timeout;
2956640d
DP		 328
329 if (first_boot == 0x55555555) {
330 /* This is the first boot after power up */
f98a9f69 331 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 332
333 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
334 return 0;
2956640d
DP		 335
336 /* PCI bus master workaround */
f98a9f69 337 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 338 if (!(first_boot & 0x4)) {
339 first_boot |= 0x4;
f98a9f69
DP		 340 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
341 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 342 }
343
344 /* This is the first boot after power up */
f98a9f69 345 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 346 if (first_boot != 0x80000f) {
347 /* clear the register for future unloads/loads */
f98a9f69 348 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 349 return -EIO;
2956640d
DP		 350 }
351
27c915a4 352 /* Start P2 boot loader */
f98a9f69
DP		 353 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
354 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 355 timeout = 0;
356 do {
357 msleep(1);
f98a9f69 358 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 359
360 if (++timeout > 5000)
361 return -EIO;
362
363 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 364 }
27c915a4 365 return 0;
2956640d
DP		 366}
367
368static void netxen_set_port_mode(struct netxen_adapter *adapter)
369{
370 u32 val, data;
371
1e2d0059 372 val = adapter->ahw.board_type;
2956640d
DP		 373 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
374 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
375 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
376 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 377 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 378 } else if (port_mode == NETXEN_PORT_MODE_XG) {
379 data = NETXEN_PORT_MODE_XG;
f98a9f69 380 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 381 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
382 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 383 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 384 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
385 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 386 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 387 } else {
388 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 389 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 390 }
391
392 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
393 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
394 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
395 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
396 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
397 }
f98a9f69 398 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 399 }
400}
401
2956640d
DP		 402static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
403{
404 u32 control;
405 int pos;
406
407 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
408 if (pos) {
409 pci_read_config_dword(pdev, pos, &control);
410 if (enable)
411 control |= PCI_MSIX_FLAGS_ENABLE;
412 else
413 control = 0;
414 pci_write_config_dword(pdev, pos, control);
415 }
416}
417
be339aee 418static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 419{
420 int i;
421
be339aee 422 for (i = 0; i < count; i++)
2956640d
DP		 423 adapter->msix_entries[i].entry = i;
424}
425
9dc28efe
DP		 426static int
427netxen_read_mac_addr(struct netxen_adapter *adapter)
428{
429 int i;
430 unsigned char *p;
431 __le64 mac_addr;
9dc28efe
DP		 432 struct net_device *netdev = adapter->netdev;
433 struct pci_dev *pdev = adapter->pdev;
434
9dc28efe
DP		 435 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
436 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
437 return -EIO;
438 } else {
439 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
440 return -EIO;
441 }
442
443 p = (unsigned char *)&mac_addr;
444 for (i = 0; i < 6; i++)
445 netdev->dev_addr[i] = *(p + 5 - i);
446
447 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
5d09e534 448 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
9dc28efe
DP		 449
450 /* set station address */
451
e174961c
JB		 452 if (!is_valid_ether_addr(netdev->perm_addr))
453 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 454
455 return 0;
456}
457
3d0a3cc9
DP		 458int netxen_nic_set_mac(struct net_device *netdev, void *p)
459{
460 struct netxen_adapter *adapter = netdev_priv(netdev);
461 struct sockaddr *addr = p;
462
463 if (!is_valid_ether_addr(addr->sa_data))
464 return -EINVAL;
465
466 if (netif_running(netdev)) {
467 netif_device_detach(netdev);
468 netxen_napi_disable(adapter);
469 }
470
5d09e534 471 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
3d0a3cc9
DP		 472 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
473 adapter->macaddr_set(adapter, addr->sa_data);
474
475 if (netif_running(netdev)) {
476 netif_device_attach(netdev);
477 netxen_napi_enable(adapter);
478 }
479 return 0;
480}
481
1abd266f
SH		 482static void netxen_set_multicast_list(struct net_device *dev)
483{
484 struct netxen_adapter *adapter = netdev_priv(dev);
485
3d0a3cc9 486 adapter->set_multi(dev);
1abd266f
SH		 487}
488
489static const struct net_device_ops netxen_netdev_ops = {
490 .ndo_open = netxen_nic_open,
491 .ndo_stop = netxen_nic_close,
492 .ndo_start_xmit = netxen_nic_xmit_frame,
493 .ndo_get_stats = netxen_nic_get_stats,
494 .ndo_validate_addr = eth_validate_addr,
495 .ndo_set_multicast_list = netxen_set_multicast_list,
496 .ndo_set_mac_address = netxen_nic_set_mac,
497 .ndo_change_mtu = netxen_nic_change_mtu,
498 .ndo_tx_timeout = netxen_tx_timeout,
499#ifdef CONFIG_NET_POLL_CONTROLLER
500 .ndo_poll_controller = netxen_nic_poll_controller,
501#endif
502};
503
97daee83
DP		 504static void
505netxen_setup_intr(struct netxen_adapter *adapter)
506{
507 struct netxen_legacy_intr_set *legacy_intrp;
508 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 509 int err, num_msix;
510
511 if (adapter->rss_supported) {
512 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
513 MSIX_ENTRIES_PER_ADAPTER : 2;
514 } else
515 num_msix = 1;
516
517 adapter->max_sds_rings = 1;
97daee83
DP		 518
519 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 520
521 if (adapter->ahw.revision_id >= NX_P3_B0)
522 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
523 else
524 legacy_intrp = &legacy_intr[0];
195c5f98
AKS		 525
526 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
527 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
528 legacy_intrp->tgt_status_reg);
529 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
530 legacy_intrp->tgt_mask_reg);
531 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
532 legacy_intrp->pci_int_reg);
533 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
534
535 if (adapter->ahw.revision_id >= NX_P3_B1)
536 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
537 ISR_INT_STATE_REG);
538 else
539 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
540 CRB_INT_VECTOR);
97daee83
DP		 541
542 netxen_set_msix_bit(pdev, 0);
543
544 if (adapter->msix_supported) {
545
be339aee
DP		 546 netxen_init_msix_entries(adapter, num_msix);
547 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
548 if (err == 0) {
549 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
550 netxen_set_msix_bit(pdev, 1);
97daee83 551
be339aee
DP		 552 if (adapter->rss_supported)
553 adapter->max_sds_rings = num_msix;
97daee83 554
be339aee
DP		 555 dev_info(&pdev->dev, "using msi-x interrupts\n");
556 return;
557 }
558
559 if (err > 0)
560 pci_disable_msix(pdev);
561
562 /* fall through for msi */
97daee83 563 }
be339aee
DP		 564
565 if (use_msi && !pci_enable_msi(pdev)) {
566 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
195c5f98
AKS		 567 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
568 msi_tgt_status[adapter->ahw.pci_func]);
be339aee 569 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 570 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 571 return;
572 }
573
574 dev_info(&pdev->dev, "using legacy interrupts\n");
575 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 576}
577
578static void
579netxen_teardown_intr(struct netxen_adapter *adapter)
580{
581 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
582 pci_disable_msix(adapter->pdev);
583 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
584 pci_disable_msi(adapter->pdev);
585}
586
587static void
588netxen_cleanup_pci_map(struct netxen_adapter *adapter)
589{
590 if (adapter->ahw.db_base != NULL)
591 iounmap(adapter->ahw.db_base);
592 if (adapter->ahw.pci_base0 != NULL)
593 iounmap(adapter->ahw.pci_base0);
594 if (adapter->ahw.pci_base1 != NULL)
595 iounmap(adapter->ahw.pci_base1);
596 if (adapter->ahw.pci_base2 != NULL)
597 iounmap(adapter->ahw.pci_base2);
598}
599
600static int
601netxen_setup_pci_map(struct netxen_adapter *adapter)
602{
603 void __iomem *mem_ptr0 = NULL;
604 void __iomem *mem_ptr1 = NULL;
605 void __iomem *mem_ptr2 = NULL;
606 void __iomem *db_ptr = NULL;
607
71fb62fb
DP		 608 resource_size_t mem_base, db_base;
609 unsigned long mem_len, db_len = 0, pci_len0 = 0;
97daee83
DP		 610
611 struct pci_dev *pdev = adapter->pdev;
612 int pci_func = adapter->ahw.pci_func;
613
614 int err = 0;
615
616 /*
617 * Set the CRB window to invalid. If any register in window 0 is
618 * accessed it should set the window to 0 and then reset it to 1.
619 */
907fa120 620 adapter->ahw.crb_win = -1;
47abe356 621 adapter->ahw.ocm_win = -1;
97daee83
DP		 622
623 /* remap phys address */
624 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
625 mem_len = pci_resource_len(pdev, 0);
97daee83 626
97daee83
DP		 627 /* 128 Meg of memory */
628 if (mem_len == NETXEN_PCI_128MB_SIZE) {
629 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
630 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
631 SECOND_PAGE_GROUP_SIZE);
632 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
633 THIRD_PAGE_GROUP_SIZE);
47abe356 634 pci_len0 = FIRST_PAGE_GROUP_SIZE;
97daee83
DP		 635 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
636 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
637 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
638 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83 639 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
97daee83
DP		 640
641 mem_ptr0 = pci_ioremap_bar(pdev, 0);
642 if (mem_ptr0 == NULL) {
643 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
644 return -EIO;
645 }
646 pci_len0 = mem_len;
97daee83
DP		 647 } else {
648 return -EIO;
649 }
650
195c5f98
AKS		 651 netxen_setup_hwops(adapter);
652
97daee83
DP		 653 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
654
655 adapter->ahw.pci_base0 = mem_ptr0;
656 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 657 adapter->ahw.pci_base1 = mem_ptr1;
658 adapter->ahw.pci_base2 = mem_ptr2;
659
6abb4b83
AKS		 660 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
661 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
662 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
663
664 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
47abe356
DP		 665 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
666 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
667 }
668
97daee83
DP		 669 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
670 goto skip_doorbell;
671
672 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
673 db_len = pci_resource_len(pdev, 4);
674
675 if (db_len == 0) {
676 printk(KERN_ERR "%s: doorbell is disabled\n",
677 netxen_nic_driver_name);
678 err = -EIO;
679 goto err_out;
680 }
681
682 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
683 if (!db_ptr) {
684 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
685 netxen_nic_driver_name);
686 err = -EIO;
687 goto err_out;
688 }
689
690skip_doorbell:
691 adapter->ahw.db_base = db_ptr;
692 adapter->ahw.db_len = db_len;
693 return 0;
694
695err_out:
696 netxen_cleanup_pci_map(adapter);
697 return err;
698}
699
2b9e62ee
DP		 700static void
701netxen_check_options(struct netxen_adapter *adapter)
702{
703 u32 fw_major, fw_minor, fw_build;
704 char brd_name[NETXEN_MAX_SHORT_NAME];
705 char serial_num[32];
706 int i, offset, val;
707 int *ptr32;
708 struct pci_dev *pdev = adapter->pdev;
709
710 adapter->driver_mismatch = 0;
711
712 ptr32 = (int *)&serial_num;
713 offset = NX_FW_SERIAL_NUM_OFFSET;
714 for (i = 0; i < 8; i++) {
715 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
716 dev_err(&pdev->dev, "error reading board info\n");
717 adapter->driver_mismatch = 1;
718 return;
719 }
720 ptr32[i] = cpu_to_le32(val);
721 offset += sizeof(u32);
722 }
723
724 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
725 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
726 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
727
728 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
729
730 if (adapter->portnum == 0) {
731 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
732
c25c0b9b
DP		 733 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
734 module_name(THIS_MODULE),
2b9e62ee
DP		 735 brd_name, serial_num, adapter->ahw.revision_id);
736 }
737
738 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
739 adapter->driver_mismatch = 1;
740 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
741 fw_major, fw_minor, fw_build);
742 return;
743 }
744
745 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
746 i = NXRD32(adapter, NETXEN_SRE_MISC);
747 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
748 }
749
750 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
751 fw_major, fw_minor, fw_build,
752 adapter->ahw.cut_through ? "cut-through" : "legacy");
753
754 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
755 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
756
757 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
758
759 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
760 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
761 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
762 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
763 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
764 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
765 }
766
767 adapter->msix_supported = 0;
768 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
769 adapter->msix_supported = !!use_msi_x;
770 adapter->rss_supported = !!use_msi_x;
771 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
772 switch (adapter->ahw.board_type) {
773 case NETXEN_BRDTYPE_P2_SB31_10G:
774 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
775 adapter->msix_supported = !!use_msi_x;
776 adapter->rss_supported = !!use_msi_x;
777 break;
778 default:
779 break;
780 }
781 }
782
783 adapter->num_txd = MAX_CMD_DESCRIPTORS;
784
785 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
786 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
787 adapter->max_rds_rings = 3;
788 } else {
789 adapter->num_lro_rxd = 0;
790 adapter->max_rds_rings = 2;
791 }
792}
793
ba599d4f 794static int
6a581e93 795netxen_start_firmware(struct netxen_adapter *adapter)
ba599d4f
DP		 796{
797 int val, err, first_boot;
798 struct pci_dev *pdev = adapter->pdev;
799
2b9e62ee
DP		 800 /* required for NX2031 dummy dma */
801 err = nx_set_dma_mask(adapter);
802 if (err)
803 return err;
804
6a581e93 805 if (!netxen_can_start_firmware(adapter))
96f2ebd2 806 goto wait_init;
0b72e659 807
f98a9f69 808 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 809
810 err = netxen_check_hw_init(adapter, first_boot);
811 if (err) {
812 dev_err(&pdev->dev, "error in init HW init sequence\n");
813 return err;
814 }
815
6a581e93 816 netxen_request_firmware(adapter);
f7185c71 817
67c38fc6 818 err = netxen_need_fw_reset(adapter);
1dbc84a7 819 if (err < 0)
db4cfd8a 820 goto err_out;
1dbc84a7 821 if (err == 0)
8f9b3f69 822 goto wait_init;
67c38fc6 823
ba599d4f 824 if (first_boot != 0x55555555) {
f98a9f69 825 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
0be367bd 826 netxen_pinit_from_rom(adapter);
ba599d4f
DP		 827 msleep(1);
828 }
567c6c4e 829
f98a9f69 830 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
6a581e93
DP		 831 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
832 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
833
567c6c4e
DP		 834 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
835 netxen_set_port_mode(adapter);
836
db4cfd8a
DP		 837 err = netxen_load_firmware(adapter);
838 if (err)
839 goto err_out;
ba599d4f 840
6a581e93
DP		 841 netxen_release_firmware(adapter);
842
ba599d4f
DP		 843 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
844
845 /* Initialize multicast addr pool owners */
846 val = 0x7654;
1e2d0059 847 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 848 val |= 0x0f000000;
f98a9f69 849 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 850
851 }
852
83ac51fa 853 err = netxen_init_dummy_dma(adapter);
ba599d4f 854 if (err)
db4cfd8a 855 goto err_out;
ba599d4f
DP		 856
857 /*
858 * Tell the hardware our version number.
859 */
860 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
861 | ((_NETXEN_NIC_LINUX_MINOR << 8))
862 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 863 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 864
96f2ebd2 865wait_init:
ba599d4f
DP		 866 /* Handshake with the card before we register the devices. */
867 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
868 if (err) {
83ac51fa 869 netxen_free_dummy_dma(adapter);
db4cfd8a 870 goto err_out;
ba599d4f
DP		 871 }
872
8f9b3f69
AKS		 873 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
874
68b3cae0
DP		 875 nx_update_dma_mask(adapter);
876
6a581e93 877 netxen_check_options(adapter);
68b3cae0 878
74c520da
AKS		 879 adapter->need_fw_reset = 0;
880
ec5c50cb 881 /* fall through and release firmware */
db4cfd8a
DP		 882
883err_out:
884 netxen_release_firmware(adapter);
885 return err;
ba599d4f
DP		 886}
887
9f5bc7f1
DP		 888static int
889netxen_nic_request_irq(struct netxen_adapter *adapter)
890{
891 irq_handler_t handler;
d8b100c5
DP		 892 struct nx_host_sds_ring *sds_ring;
893 int err, ring;
894
9f5bc7f1
DP		 895 unsigned long flags = IRQF_SAMPLE_RANDOM;
896 struct net_device *netdev = adapter->netdev;
d8b100c5 897 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 898
9f5bc7f1
DP		 899 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
900 handler = netxen_msix_intr;
901 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
902 handler = netxen_msi_intr;
903 else {
904 flags |= IRQF_SHARED;
905 handler = netxen_intr;
906 }
907 adapter->irq = netdev->irq;
908
d8b100c5
DP		 909 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
910 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 911 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 912 err = request_irq(sds_ring->irq, handler,
913 flags, sds_ring->name, sds_ring);
914 if (err)
915 return err;
916 }
917
918 return 0;
919}
920
921static void
922netxen_nic_free_irq(struct netxen_adapter *adapter)
923{
924 int ring;
925 struct nx_host_sds_ring *sds_ring;
926
927 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
928
929 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
930 sds_ring = &recv_ctx->sds_rings[ring];
931 free_irq(sds_ring->irq, sds_ring);
932 }
9f5bc7f1
DP		 933}
934
ca2ef330
DP		 935static void
936netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
937{
938 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
939 adapter->coal.normal.data.rx_time_us =
940 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
941 adapter->coal.normal.data.rx_packets =
942 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
943 adapter->coal.normal.data.tx_time_us =
944 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
945 adapter->coal.normal.data.tx_packets =
946 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
947}
948
6f771419 949/* with rtnl_lock */
9f5bc7f1 950static int
6f771419 951__netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
9f5bc7f1
DP		 952{
953 int err;
954
db4cfd8a
DP		 955 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
956 return -EIO;
957
9f5bc7f1
DP		 958 err = adapter->init_port(adapter, adapter->physical_port);
959 if (err) {
960 printk(KERN_ERR "%s: Failed to initialize port %d\n",
961 netxen_nic_driver_name, adapter->portnum);
962 return err;
963 }
3d0a3cc9 964 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
5d09e534 965 adapter->macaddr_set(adapter, adapter->mac_addr);
9f5bc7f1 966
3d0a3cc9
DP		 967 adapter->set_multi(netdev);
968 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 969
970 adapter->ahw.linkup = 0;
9f5bc7f1 971
d8b100c5
DP		 972 if (adapter->max_sds_rings > 1)
973 netxen_config_rss(adapter, 1);
9f5bc7f1 974
ca2ef330
DP		 975 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
976 netxen_config_intr_coalesce(adapter);
977
1bb482f8
NK		 978 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
979 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
980
b2af9cb0
DP		 981 netxen_napi_enable(adapter);
982
5103c9f7 983 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 984 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 985 else
986 netxen_nic_set_link_parameters(adapter);
987
6a581e93 988 set_bit(__NX_DEV_UP, &adapter->state);
9f5bc7f1
DP		 989 return 0;
990}
991
6f771419
AKS		 992/* Usage: During resume and firmware recovery module.*/
993
994static inline int
995netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
996{
997 int err = 0;
998
999 rtnl_lock();
1000 if (netif_running(netdev))
1001 err = __netxen_nic_up(adapter, netdev);
1002 rtnl_unlock();
1003
1004 return err;
1005}
1006
1007/* with rtnl_lock */
9f5bc7f1 1008static void
6f771419 1009__netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
9f5bc7f1 1010{
db4cfd8a
DP		 1011 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1012 return;
1013
f2251f66
AKS		 1014 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1015 return;
6a581e93 1016
f2251f66 1017 smp_mb();
b2af9cb0 1018 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 1019 netif_carrier_off(netdev);
b2af9cb0 1020 netif_tx_disable(netdev);
9f5bc7f1
DP		 1021
1022 if (adapter->stop_port)
1023 adapter->stop_port(adapter);
1024
5cf4d323
DP		 1025 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1026 netxen_p3_free_mac_list(adapter);
1027
22b5794b
AKS		 1028 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1029
be339aee
DP		 1030 netxen_napi_disable(adapter);
1031
9f5bc7f1 1032 netxen_release_tx_buffers(adapter);
b2af9cb0 1033 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1
DP		 1034}
1035
6f771419
AKS		 1036/* Usage: During suspend and firmware recovery module */
1037
1038static inline void
1039netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1040{
1041 rtnl_lock();
1042 if (netif_running(netdev))
1043 __netxen_nic_down(adapter, netdev);
1044 rtnl_unlock();
1045
1046}
9f5bc7f1
DP		 1047
1048static int
1049netxen_nic_attach(struct netxen_adapter *adapter)
1050{
1051 struct net_device *netdev = adapter->netdev;
1052 struct pci_dev *pdev = adapter->pdev;
becf46a0 1053 int err, ring;
d8b100c5 1054 struct nx_host_rds_ring *rds_ring;
d877f1e3 1055 struct nx_host_tx_ring *tx_ring;
9f5bc7f1 1056
7042cd8f
AKS		 1057 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1058 return 0;
1059
9f5bc7f1 1060 err = netxen_init_firmware(adapter);
232e7d68
DP		 1061 if (err)
1062 return err;
1063
1064 err = netxen_napi_add(adapter, netdev);
1065 if (err)
1066 return err;
9f5bc7f1 1067
9f5bc7f1
DP		 1068 err = netxen_alloc_sw_resources(adapter);
1069 if (err) {
1070 printk(KERN_ERR "%s: Error in setting sw resources\n",
1071 netdev->name);
1072 return err;
1073 }
1074
9f5bc7f1
DP		 1075 err = netxen_alloc_hw_resources(adapter);
1076 if (err) {
1077 printk(KERN_ERR "%s: Error in setting hw resources\n",
1078 netdev->name);
1079 goto err_out_free_sw;
1080 }
1081
4f96b988 1082 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
4ea528a1 1083 tx_ring = adapter->tx_ring;
195c5f98
AKS		 1084 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1085 crb_cmd_producer[adapter->portnum]);
1086 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1087 crb_cmd_consumer[adapter->portnum]);
9f5bc7f1 1088
cb2107be
DP		 1089 tx_ring->producer = 0;
1090 tx_ring->sw_consumer = 0;
1091
1092 netxen_nic_update_cmd_producer(adapter, tx_ring);
1093 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 1094 }
1095
d8b100c5
DP		 1096 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1097 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1098 netxen_post_rx_buffers(adapter, ring, rds_ring);
1099 }
9f5bc7f1
DP		 1100
1101 err = netxen_nic_request_irq(adapter);
1102 if (err) {
1103 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1104 netdev->name);
1105 goto err_out_free_rxbuf;
1106 }
1107
ca2ef330
DP		 1108 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1109 netxen_nic_init_coalesce_defaults(adapter);
1110
fa3ce355
NK		 1111 netxen_create_sysfs_entries(adapter);
1112
9f5bc7f1
DP		 1113 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1114 return 0;
1115
1116err_out_free_rxbuf:
1117 netxen_release_rx_buffers(adapter);
1118 netxen_free_hw_resources(adapter);
1119err_out_free_sw:
1120 netxen_free_sw_resources(adapter);
1121 return err;
1122}
1123
1124static void
1125netxen_nic_detach(struct netxen_adapter *adapter)
1126{
7042cd8f
AKS		 1127 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1128 return;
1129
fa3ce355
NK		 1130 netxen_remove_sysfs_entries(adapter);
1131
9f5bc7f1 1132 netxen_free_hw_resources(adapter);
cf981ffb 1133 netxen_release_rx_buffers(adapter);
be339aee 1134 netxen_nic_free_irq(adapter);
232e7d68 1135 netxen_napi_del(adapter);
9f5bc7f1
DP		 1136 netxen_free_sw_resources(adapter);
1137
1138 adapter->is_up = 0;
1139}
1140
7042cd8f
AKS		 1141int
1142netxen_nic_reset_context(struct netxen_adapter *adapter)
1143{
1144 int err = 0;
1145 struct net_device *netdev = adapter->netdev;
1146
6a581e93
DP		 1147 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1148 return -EBUSY;
1149
7042cd8f
AKS		 1150 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1151
6a581e93
DP		 1152 netif_device_detach(netdev);
1153
7042cd8f 1154 if (netif_running(netdev))
6f771419 1155 __netxen_nic_down(adapter, netdev);
7042cd8f
AKS		 1156
1157 netxen_nic_detach(adapter);
1158
6a581e93
DP		 1159 if (netif_running(netdev)) {
1160 err = netxen_nic_attach(adapter);
1161 if (!err)
6f771419 1162 err = __netxen_nic_up(adapter, netdev);
7042cd8f 1163
6a581e93
DP		 1164 if (err)
1165 goto done;
1166 }
1167
1168 netif_device_attach(netdev);
7042cd8f 1169 }
6a581e93 1170
7042cd8f 1171done:
6a581e93 1172 clear_bit(__NX_RESETTING, &adapter->state);
7042cd8f
AKS		 1173 return err;
1174}
1175
f17443f4
DP		 1176static int
1177netxen_setup_netdev(struct netxen_adapter *adapter,
1178 struct net_device *netdev)
1179{
1180 int err = 0;
1181 struct pci_dev *pdev = adapter->pdev;
1182
1183 adapter->rx_csum = 1;
1184 adapter->mc_enabled = 0;
1185 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1186 adapter->max_mc_count = 38;
1187 else
1188 adapter->max_mc_count = 16;
1189
1190 netdev->netdev_ops = &netxen_netdev_ops;
1191 netdev->watchdog_timeo = 2*HZ;
1192
1193 netxen_nic_change_mtu(netdev, netdev->mtu);
1194
1195 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1196
1197 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1198 netdev->features |= (NETIF_F_GRO);
1199 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1200
1201 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1202 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1203 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1204 }
1205
1206 if (adapter->pci_using_dac) {
1207 netdev->features |= NETIF_F_HIGHDMA;
1208 netdev->vlan_features |= NETIF_F_HIGHDMA;
1209 }
1210
028afe71
DP		 1211 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1212 netdev->features |= (NETIF_F_HW_VLAN_TX);
1213
1bb482f8
NK		 1214 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1215 netdev->features |= NETIF_F_LRO;
1216
f17443f4
DP		 1217 netdev->irq = adapter->msix_entries[0].vector;
1218
74c520da 1219 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
f17443f4
DP		 1220
1221 if (netxen_read_mac_addr(adapter))
1222 dev_warn(&pdev->dev, "failed to read mac addr\n");
1223
1224 netif_carrier_off(netdev);
1225 netif_stop_queue(netdev);
1226
1227 err = register_netdev(netdev);
1228 if (err) {
1229 dev_err(&pdev->dev, "failed to register net device\n");
1230 return err;
1231 }
1232
1233 return 0;
1234}
1235
3d396eb1
AK		 1236static int __devinit
1237netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1238{
1239 struct net_device *netdev = NULL;
1240 struct netxen_adapter *adapter = NULL;
2956640d 1241 int i = 0, err;
3176ff3e 1242 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 1243 uint8_t revision_id;
3d396eb1 1244
11d89d63 1245 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
c25c0b9b 1246 pr_warning("%s: chip revisions between 0x%x-0x%x"
11d89d63 1247 "will not be enabled.\n",
c25c0b9b 1248 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
11d89d63
DP		 1249 return -ENODEV;
1250 }
1251
3d396eb1
AK		 1252 if ((err = pci_enable_device(pdev)))
1253 return err;
2956640d 1254
3d396eb1
AK		 1255 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1256 err = -ENODEV;
1257 goto err_out_disable_pdev;
1258 }
1259
1260 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1261 goto err_out_disable_pdev;
1262
1263 pci_set_master(pdev);
3176ff3e
MT		 1264
1265 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1266 if(!netdev) {
f17443f4
DP		 1267 dev_err(&pdev->dev, "failed to allocate net_device\n");
1268 err = -ENOMEM;
3176ff3e
MT		 1269 goto err_out_free_res;
1270 }
1271
3176ff3e
MT		 1272 SET_NETDEV_DEV(netdev, &pdev->dev);
1273
4cf1653a 1274 adapter = netdev_priv(netdev);
2956640d
DP		 1275 adapter->netdev = netdev;
1276 adapter->pdev = pdev;
13ba9c77 1277 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1278
1279 revision_id = pdev->revision;
1280 adapter->ahw.revision_id = revision_id;
1281
f03b0ebd
DP		 1282 rwlock_init(&adapter->ahw.crb_lock);
1283 spin_lock_init(&adapter->ahw.mem_lock);
1284
d8b100c5 1285 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1286 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1287
97daee83
DP		 1288 err = netxen_setup_pci_map(adapter);
1289 if (err)
6c80b18d 1290 goto err_out_free_netdev;
3d396eb1 1291
2d1a3bbd 1292 /* This will be reset for mezz cards */
3176ff3e 1293 adapter->portnum = pci_func_id;
3176ff3e 1294
f17443f4
DP		 1295 err = netxen_nic_get_board_info(adapter);
1296 if (err) {
1297 dev_err(&pdev->dev, "Error getting board config info.\n");
dcd56fdb
DP		 1298 goto err_out_iounmap;
1299 }
6c80b18d 1300
13ba9c77 1301 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1302 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1303 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1304 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1305 if (pci_func_id >= 2)
13ba9c77 1306 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1307 break;
1308 default:
1309 break;
1310 }
13ba9c77 1311
6a581e93 1312 err = netxen_start_firmware(adapter);
0b72e659 1313 if (err)
8f9b3f69 1314 goto err_out_decr_ref;
f17443f4 1315
3d396eb1 1316 /*
6c80b18d 1317 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1318 */
dcd56fdb 1319 adapter->physical_port = adapter->portnum;
4f96b988 1320 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
f98a9f69 1321 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1322 if (i != 0x55555555)
1323 adapter->physical_port = i;
1324 }
6c80b18d 1325
6a581e93 1326 netxen_nic_clear_stats(adapter);
2956640d 1327
97daee83 1328 netxen_setup_intr(adapter);
2956640d 1329
f17443f4 1330 err = netxen_setup_netdev(adapter, netdev);
9dc28efe 1331 if (err)
2956640d 1332 goto err_out_disable_msi;
6c80b18d
MT		 1333
1334 pci_set_drvdata(pdev, adapter);
3d396eb1 1335
6a581e93
DP		 1336 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1337
1e2d0059 1338 switch (adapter->ahw.port_type) {
2956640d
DP		 1339 case NETXEN_NIC_GBE:
1340 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1341 adapter->netdev->name);
1342 break;
1343 case NETXEN_NIC_XGBE:
1344 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1345 adapter->netdev->name);
1346 break;
3d396eb1 1347 }
3d396eb1 1348
70f9cf89
DP		 1349 netxen_create_diag_entries(adapter);
1350
2956640d
DP		 1351 return 0;
1352
1353err_out_disable_msi:
97daee83 1354 netxen_teardown_intr(adapter);
6c80b18d 1355
83ac51fa 1356 netxen_free_dummy_dma(adapter);
3d396eb1 1357
8f9b3f69 1358err_out_decr_ref:
6a581e93
DP		 1359 nx_decr_dev_ref_cnt(adapter);
1360
2956640d 1361err_out_iounmap:
97daee83 1362 netxen_cleanup_pci_map(adapter);
cb8011ad 1363
6c80b18d
MT		 1364err_out_free_netdev:
1365 free_netdev(netdev);
1366
1367err_out_free_res:
3d396eb1 1368 pci_release_regions(pdev);
6c80b18d
MT		 1369
1370err_out_disable_pdev:
2956640d 1371 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1372 pci_disable_device(pdev);
1373 return err;
1374}
1375
1376static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1377{
1378 struct netxen_adapter *adapter;
3176ff3e 1379 struct net_device *netdev;
3d396eb1 1380
6c80b18d 1381 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1382 if (adapter == NULL)
1383 return;
1384
6c80b18d
MT		 1385 netdev = adapter->netdev;
1386
6a581e93
DP		 1387 netxen_cancel_fw_work(adapter);
1388
96acb6eb
DP		 1389 unregister_netdev(netdev);
1390
e424fa9d
AKS		 1391 cancel_work_sync(&adapter->tx_timeout_task);
1392
7042cd8f 1393 netxen_nic_detach(adapter);
3d396eb1 1394
6a581e93
DP		 1395 nx_decr_dev_ref_cnt(adapter);
1396
439b454e 1397 if (adapter->portnum == 0)
83ac51fa 1398 netxen_free_dummy_dma(adapter);
96acb6eb 1399
6a581e93
DP		 1400 clear_bit(__NX_RESETTING, &adapter->state);
1401
97daee83 1402 netxen_teardown_intr(adapter);
3052246c 1403
70f9cf89
DP		 1404 netxen_remove_diag_entries(adapter);
1405
97daee83 1406 netxen_cleanup_pci_map(adapter);
595e3fb8 1407
f7185c71
DP		 1408 netxen_release_firmware(adapter);
1409
595e3fb8 1410 pci_release_regions(pdev);
3052246c 1411 pci_disable_device(pdev);
595e3fb8
MT		 1412 pci_set_drvdata(pdev, NULL);
1413
6c80b18d 1414 free_netdev(netdev);
3d396eb1 1415}
22b5794b 1416static int __netxen_nic_shutdown(struct pci_dev *pdev)
0b72e659 1417{
0b72e659
DP		 1418 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1419 struct net_device *netdev = adapter->netdev;
22b5794b 1420 int retval;
0b72e659
DP		 1421
1422 netif_device_detach(netdev);
1423
6a581e93
DP		 1424 netxen_cancel_fw_work(adapter);
1425
0b72e659
DP		 1426 if (netif_running(netdev))
1427 netxen_nic_down(adapter, netdev);
1428
e424fa9d
AKS		 1429 cancel_work_sync(&adapter->tx_timeout_task);
1430
7042cd8f 1431 netxen_nic_detach(adapter);
0b72e659 1432
22b5794b
AKS		 1433 if (adapter->portnum == 0)
1434 netxen_free_dummy_dma(adapter);
1435
6a581e93
DP		 1436 nx_decr_dev_ref_cnt(adapter);
1437
1438 clear_bit(__NX_RESETTING, &adapter->state);
1439
22b5794b
AKS		 1440 retval = pci_save_state(pdev);
1441 if (retval)
1442 return retval;
0b72e659
DP		 1443
1444 if (netxen_nic_wol_supported(adapter)) {
1445 pci_enable_wake(pdev, PCI_D3cold, 1);
1446 pci_enable_wake(pdev, PCI_D3hot, 1);
1447 }
1448
1449 pci_disable_device(pdev);
0b72e659
DP		 1450
1451 return 0;
1452}
22b5794b
AKS		 1453static void netxen_nic_shutdown(struct pci_dev *pdev)
1454{
1455 if (__netxen_nic_shutdown(pdev))
1456 return;
1457}
1458#ifdef CONFIG_PM
1459static int
1460netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1461{
1462 int retval;
1463
1464 retval = __netxen_nic_shutdown(pdev);
1465 if (retval)
1466 return retval;
1467
1468 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1469 return 0;
1470}
0b72e659
DP		 1471
1472static int
1473netxen_nic_resume(struct pci_dev *pdev)
1474{
1475 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1476 struct net_device *netdev = adapter->netdev;
1477 int err;
1478
1479 pci_set_power_state(pdev, PCI_D0);
1480 pci_restore_state(pdev);
1481
1482 err = pci_enable_device(pdev);
1483 if (err)
1484 return err;
1485
907fa120 1486 adapter->ahw.crb_win = -1;
47abe356 1487 adapter->ahw.ocm_win = -1;
0b72e659 1488
6a581e93 1489 err = netxen_start_firmware(adapter);
0b72e659
DP		 1490 if (err) {
1491 dev_err(&pdev->dev, "failed to start firmware\n");
1492 return err;
1493 }
1494
1495 if (netif_running(netdev)) {
1496 err = netxen_nic_attach(adapter);
1497 if (err)
6a581e93 1498 goto err_out;
0b72e659
DP		 1499
1500 err = netxen_nic_up(adapter, netdev);
1501 if (err)
6a581e93 1502 goto err_out_detach;
0b72e659
DP		 1503
1504 netif_device_attach(netdev);
d0725e4d
AKS		 1505
1506 netxen_config_indev_addr(netdev, NETDEV_UP);
0b72e659
DP		 1507 }
1508
6a581e93 1509 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
07653aa3 1510 return 0;
6a581e93
DP		 1511
1512err_out_detach:
1513 netxen_nic_detach(adapter);
1514err_out:
1515 nx_decr_dev_ref_cnt(adapter);
1516 return err;
0b72e659 1517}
01542cd1 1518#endif
0b72e659 1519
3d396eb1
AK		 1520static int netxen_nic_open(struct net_device *netdev)
1521{
4cf1653a 1522 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1523 int err = 0;
3d396eb1 1524
dcd56fdb
DP		 1525 if (adapter->driver_mismatch)
1526 return -EIO;
1527
7042cd8f
AKS		 1528 err = netxen_nic_attach(adapter);
1529 if (err)
1530 return err;
2956640d 1531
6f771419 1532 err = __netxen_nic_up(adapter, netdev);
9f5bc7f1
DP		 1533 if (err)
1534 goto err_out;
05aaa02d 1535
dcd56fdb 1536 netif_start_queue(netdev);
3d396eb1
AK		 1537
1538 return 0;
2956640d 1539
9f5bc7f1
DP		 1540err_out:
1541 netxen_nic_detach(adapter);
2956640d 1542 return err;
3d396eb1
AK		 1543}
1544
1545/*
1546 * netxen_nic_close - Disables a network interface entry point
1547 */
1548static int netxen_nic_close(struct net_device *netdev)
1549{
3176ff3e 1550 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1551
6f771419 1552 __netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1553 return 0;
1554}
1555
1bcfd790
DP		 1556static void
1557netxen_tso_check(struct net_device *netdev,
1558 struct nx_host_tx_ring *tx_ring,
1559 struct cmd_desc_type0 *first_desc,
1560 struct sk_buff *skb)
cd1f8160 1561{
391587c3 1562 u8 opcode = TX_ETHER_PKT;
cdff1036 1563 __be16 protocol = skb->protocol;
028afe71 1564 u16 flags = 0, vid = 0;
1bcfd790 1565 u32 producer;
028afe71 1566 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1bcfd790 1567 struct cmd_desc_type0 *hwdesc;
028afe71 1568 struct vlan_ethhdr *vh;
cdff1036 1569
09640e63 1570 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
028afe71
DP		 1571
1572 vh = (struct vlan_ethhdr *)skb->data;
cdff1036
DP		 1573 protocol = vh->h_vlan_encapsulated_proto;
1574 flags = FLAGS_VLAN_TAGGED;
028afe71
DP		 1575
1576 } else if (vlan_tx_tag_present(skb)) {
1577
1578 flags = FLAGS_VLAN_OOB;
1579 vid = vlan_tx_tag_get(skb);
1580 netxen_set_tx_vlan_tci(first_desc, vid);
1581 vlan_oob = 1;
cdff1036 1582 }
cd1f8160 1583
391587c3
DP		 1584 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1585 skb_shinfo(skb)->gso_size > 0) {
1586
1bcfd790
DP		 1587 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1588
1589 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1590 first_desc->total_hdr_length = hdr_len;
028afe71
DP		 1591 if (vlan_oob) {
1592 first_desc->total_hdr_length += VLAN_HLEN;
1593 first_desc->tcp_hdr_offset = VLAN_HLEN;
1594 first_desc->ip_hdr_offset = VLAN_HLEN;
1595 /* Only in case of TSO on vlan device */
1596 flags |= FLAGS_VLAN_TAGGED;
1597 }
391587c3 1598
09640e63 1599 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3 1600 TX_TCP_LSO6 : TX_TCP_LSO;
1bcfd790 1601 tso = 1;
cd1f8160
DP		 1602
1603 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1604 u8 l4proto;
1605
09640e63 1606 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1607 l4proto = ip_hdr(skb)->protocol;
1608
1609 if (l4proto == IPPROTO_TCP)
1610 opcode = TX_TCP_PKT;
1611 else if(l4proto == IPPROTO_UDP)
1612 opcode = TX_UDP_PKT;
09640e63 1613 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1614 l4proto = ipv6_hdr(skb)->nexthdr;
1615
1616 if (l4proto == IPPROTO_TCP)
1617 opcode = TX_TCPV6_PKT;
1618 else if(l4proto == IPPROTO_UDP)
1619 opcode = TX_UDPV6_PKT;
1620 }
cd1f8160 1621 }
028afe71
DP		 1622
1623 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1624 first_desc->ip_hdr_offset += skb_network_offset(skb);
1bcfd790
DP		 1625 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1626
1627 if (!tso)
1628 return;
1629
1630 /* For LSO, we need to copy the MAC/IP/TCP headers into
1631 * the descriptor ring
1632 */
1633 producer = tx_ring->producer;
1634 copied = 0;
1635 offset = 2;
1636
028afe71
DP		 1637 if (vlan_oob) {
1638 /* Create a TSO vlan header template for firmware */
1639
1640 hwdesc = &tx_ring->desc_head[producer];
1641 tx_ring->cmd_buf_arr[producer].skb = NULL;
1642
1643 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1644 hdr_len + VLAN_HLEN);
1645
1646 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1647 skb_copy_from_linear_data(skb, vh, 12);
1648 vh->h_vlan_proto = htons(ETH_P_8021Q);
1649 vh->h_vlan_TCI = htons(vid);
1650 skb_copy_from_linear_data_offset(skb, 12,
1651 (char *)vh + 16, copy_len - 16);
1652
545eb370 1653 copied = copy_len - VLAN_HLEN;
028afe71
DP		 1654 offset = 0;
1655
1656 producer = get_next_index(producer, tx_ring->num_desc);
1657 }
1658
1bcfd790
DP		 1659 while (copied < hdr_len) {
1660
1661 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1662 (hdr_len - copied));
1663
1664 hwdesc = &tx_ring->desc_head[producer];
1665 tx_ring->cmd_buf_arr[producer].skb = NULL;
1666
1667 skb_copy_from_linear_data_offset(skb, copied,
1668 (char *)hwdesc + offset, copy_len);
1669
1670 copied += copy_len;
1671 offset = 0;
1672
1673 producer = get_next_index(producer, tx_ring->num_desc);
1674 }
1675
1676 tx_ring->producer = producer;
1677 barrier();
cd1f8160
DP		 1678}
1679
ce644ed4
DP		 1680static int
1681netxen_map_tx_skb(struct pci_dev *pdev,
1682 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
6f703406 1683{
ce644ed4
DP		 1684 struct netxen_skb_frag *nf;
1685 struct skb_frag_struct *frag;
1686 int i, nr_frags;
1687 dma_addr_t map;
1688
1689 nr_frags = skb_shinfo(skb)->nr_frags;
1690 nf = &pbuf->frag_array[0];
1691
1692 map = pci_map_single(pdev, skb->data,
1693 skb_headlen(skb), PCI_DMA_TODEVICE);
1694 if (pci_dma_mapping_error(pdev, map))
1695 goto out_err;
6f703406 1696
ce644ed4
DP		 1697 nf->dma = map;
1698 nf->length = skb_headlen(skb);
1699
1700 for (i = 0; i < nr_frags; i++) {
1701 frag = &skb_shinfo(skb)->frags[i];
1702 nf = &pbuf->frag_array[i+1];
1703
1704 map = pci_map_page(pdev, frag->page, frag->page_offset,
1705 frag->size, PCI_DMA_TODEVICE);
1706 if (pci_dma_mapping_error(pdev, map))
1707 goto unwind;
1708
1709 nf->dma = map;
1710 nf->length = frag->size;
1711 }
1712
1713 return 0;
6f703406 1714
ce644ed4 1715unwind:
cf503e8f
DP		 1716 while (--i >= 0) {
1717 nf = &pbuf->frag_array[i+1];
ce644ed4 1718 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
6f703406 1719 }
ce644ed4
DP		 1720
1721 nf = &pbuf->frag_array[0];
1722 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1723
1724out_err:
1725 return -ENOMEM;
6f703406
DP		 1726}
1727
d32cc3d2
DP		 1728static inline void
1729netxen_clear_cmddesc(u64 *desc)
1730{
1bcfd790
DP		 1731 desc[0] = 0ULL;
1732 desc[2] = 0ULL;
d32cc3d2
DP		 1733}
1734
61357325 1735static netdev_tx_t
d32cc3d2 1736netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1737{
3176ff3e 1738 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1739 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
391587c3 1740 struct netxen_cmd_buffer *pbuf;
3d396eb1 1741 struct netxen_skb_frag *buffrag;
1bcfd790
DP		 1742 struct cmd_desc_type0 *hwdesc, *first_desc;
1743 struct pci_dev *pdev;
391587c3 1744 int i, k;
3d396eb1 1745
cb2107be 1746 u32 producer;
ce644ed4 1747 int frag_count, no_of_desc;
d877f1e3 1748 u32 num_txd = tx_ring->num_desc;
3d396eb1 1749
3d396eb1
AK		 1750 frag_count = skb_shinfo(skb)->nr_frags + 1;
1751
d877f1e3 1752 /* 4 fragments per cmd des */
3d396eb1 1753 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1754
fa9859ef 1755 if (unlikely(no_of_desc + 2 > netxen_tx_avail(tx_ring))) {
ba53e6b4 1756 netif_stop_queue(netdev);
ba53e6b4 1757 return NETDEV_TX_BUSY;
53a01e00 1758 }
3d396eb1 1759
cb2107be 1760 producer = tx_ring->producer;
ce644ed4 1761 pbuf = &tx_ring->cmd_buf_arr[producer];
cb2107be 1762
1bcfd790 1763 pdev = adapter->pdev;
391587c3 1764
ce644ed4 1765 if (netxen_map_tx_skb(pdev, skb, pbuf))
1bcfd790 1766 goto drop_packet;
391587c3 1767
3d396eb1 1768 pbuf->skb = skb;
3d396eb1 1769 pbuf->frag_count = frag_count;
6f703406 1770
1bcfd790
DP		 1771 first_desc = hwdesc = &tx_ring->desc_head[producer];
1772 netxen_clear_cmddesc((u64 *)hwdesc);
3d396eb1 1773
ce644ed4
DP		 1774 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1775 netxen_set_tx_port(first_desc, adapter->portnum);
3d396eb1 1776
ce644ed4 1777 for (i = 0; i < frag_count; i++) {
3d396eb1 1778
ce644ed4
DP		 1779 k = i % 4;
1780
1781 if ((k == 0) && (i > 0)) {
1782 /* move to next desc.*/
ba53e6b4 1783 producer = get_next_index(producer, num_txd);
d877f1e3 1784 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1785 netxen_clear_cmddesc((u64 *)hwdesc);
ce644ed4 1786 tx_ring->cmd_buf_arr[producer].skb = NULL;
6f703406 1787 }
3d396eb1 1788
ce644ed4 1789 buffrag = &pbuf->frag_array[i];
3d396eb1 1790
ce644ed4 1791 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
3d396eb1
AK		 1792 switch (k) {
1793 case 0:
ce644ed4 1794 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1795 break;
1796 case 1:
ce644ed4 1797 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1798 break;
1799 case 2:
ce644ed4 1800 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1801 break;
1802 case 3:
ce644ed4 1803 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1804 break;
1805 }
3d396eb1 1806 }
ce644ed4 1807
1bcfd790 1808 tx_ring->producer = get_next_index(producer, num_txd);
3d396eb1 1809
1bcfd790 1810 netxen_tso_check(netdev, tx_ring, first_desc, skb);
6c80b18d 1811
cb2107be 1812 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1813
1bcfd790 1814 adapter->stats.txbytes += skb->len;
ba53e6b4 1815 adapter->stats.xmitcalled++;
3d396eb1 1816
3d396eb1 1817 return NETDEV_TX_OK;
6f703406
DP		 1818
1819drop_packet:
1820 adapter->stats.txdropped++;
1821 dev_kfree_skb_any(skb);
1822 return NETDEV_TX_OK;
3d396eb1
AK		 1823}
1824
a97342f9
DP		 1825static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1826{
1827 struct net_device *netdev = adapter->netdev;
1828 uint32_t temp, temp_state, temp_val;
1829 int rv = 0;
1830
f98a9f69 1831 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1832
1833 temp_state = nx_get_temp_state(temp);
1834 temp_val = nx_get_temp_val(temp);
1835
1836 if (temp_state == NX_TEMP_PANIC) {
1837 printk(KERN_ALERT
1838 "%s: Device temperature %d degrees C exceeds"
1839 " maximum allowed. Hardware has been shut down.\n",
e4135c2d 1840 netdev->name, temp_val);
a97342f9
DP		 1841 rv = 1;
1842 } else if (temp_state == NX_TEMP_WARN) {
1843 if (adapter->temp == NX_TEMP_NORMAL) {
1844 printk(KERN_ALERT
1845 "%s: Device temperature %d degrees C "
1846 "exceeds operating range."
1847 " Immediate action needed.\n",
e4135c2d 1848 netdev->name, temp_val);
a97342f9
DP		 1849 }
1850 } else {
1851 if (adapter->temp == NX_TEMP_WARN) {
1852 printk(KERN_INFO
1853 "%s: Device temperature is now %d degrees C"
e4135c2d 1854 " in normal range.\n", netdev->name,
a97342f9
DP		 1855 temp_val);
1856 }
1857 }
1858 adapter->temp = temp_state;
1859 return rv;
1860}
1861
3bf26ce3 1862void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1863{
1864 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1865
1866 if (adapter->ahw.linkup && !linkup) {
1867 printk(KERN_INFO "%s: %s NIC Link is down\n",
1868 netxen_nic_driver_name, netdev->name);
1869 adapter->ahw.linkup = 0;
1870 if (netif_running(netdev)) {
1871 netif_carrier_off(netdev);
1872 netif_stop_queue(netdev);
1873 }
e424fa9d 1874 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1875 } else if (!adapter->ahw.linkup && linkup) {
1876 printk(KERN_INFO "%s: %s NIC Link is up\n",
1877 netxen_nic_driver_name, netdev->name);
1878 adapter->ahw.linkup = 1;
1879 if (netif_running(netdev)) {
1880 netif_carrier_on(netdev);
1881 netif_wake_queue(netdev);
1882 }
e424fa9d 1883 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1884 }
1885}
1886
3bf26ce3
DP		 1887static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1888{
1889 u32 val, port, linkup;
1890
1891 port = adapter->physical_port;
1892
1893 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1894 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1895 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1896 linkup = (val == XG_LINK_UP_P3);
1897 } else {
f98a9f69 1898 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1899 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1900 linkup = (val >> port) & 1;
1901 else {
1902 val = (val >> port*8) & 0xff;
1903 linkup = (val == XG_LINK_UP);
1904 }
1905 }
1906
1907 netxen_advert_link_change(adapter, linkup);
1908}
1909
3d396eb1
AK		 1910static void netxen_tx_timeout(struct net_device *netdev)
1911{
e424fa9d 1912 struct netxen_adapter *adapter = netdev_priv(netdev);
f17443f4 1913
6a581e93
DP		 1914 if (test_bit(__NX_RESETTING, &adapter->state))
1915 return;
1916
f17443f4 1917 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
e424fa9d 1918 schedule_work(&adapter->tx_timeout_task);
3d396eb1
AK		 1919}
1920
74c520da 1921static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1922{
4790654c 1923 struct netxen_adapter *adapter =
3176ff3e 1924 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1925
b2af9cb0
DP		 1926 if (!netif_running(adapter->netdev))
1927 return;
1928
74c520da 1929 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
6a581e93
DP		 1930 return;
1931
74c520da
AKS		 1932 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
1933 goto request_reset;
1934
1935 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1936 /* try to scrub interrupt */
1937 netxen_napi_disable(adapter);
ba53e6b4 1938
74c520da 1939 adapter->netdev->trans_start = jiffies;
ba53e6b4 1940
74c520da
AKS		 1941 netxen_napi_enable(adapter);
1942
1943 netif_wake_queue(adapter->netdev);
1944
a598ae17 1945 clear_bit(__NX_RESETTING, &adapter->state);
74c520da
AKS		 1946
1947 } else {
a598ae17 1948 clear_bit(__NX_RESETTING, &adapter->state);
74c520da
AKS		 1949 if (!netxen_nic_reset_context(adapter)) {
1950 adapter->netdev->trans_start = jiffies;
a598ae17 1951 return;
74c520da
AKS		 1952 }
1953
1954 /* context reset failed, fall through for fw reset */
1955 }
1956
1957request_reset:
1958 adapter->need_fw_reset = 1;
ff8a306d 1959 clear_bit(__NX_RESETTING, &adapter->state);
3d396eb1
AK		 1960}
1961
a97342f9
DP		 1962struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1963{
1964 struct netxen_adapter *adapter = netdev_priv(netdev);
5a4d6311 1965 struct net_device_stats *stats = &netdev->stats;
a97342f9
DP		 1966
1967 memset(stats, 0, sizeof(*stats));
1968
1bb482f8 1969 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
e98e3350 1970 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1971 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1972 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1973 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1974 stats->tx_dropped = adapter->stats.txdropped;
1975
1976 return stats;
1977}
1978
e4c93c81 1979static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1980{
d8b100c5
DP		 1981 struct nx_host_sds_ring *sds_ring = data;
1982 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1983 u32 status = 0;
1984
195c5f98 1985 status = readl(adapter->isr_int_vec);
d71e1be8 1986
195c5f98 1987 if (!(status & adapter->int_vec_bit))
05aaa02d 1988 return IRQ_NONE;
e01872af 1989
195c5f98 1990 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
d71e1be8 1991 /* check interrupt state machine, to be sure */
195c5f98 1992 status = readl(adapter->crb_int_state_reg);
d71e1be8
DP		 1993 if (!ISR_LEGACY_INT_TRIGGERED(status))
1994 return IRQ_NONE;
1995
092bc571
DP		 1996 } else {
1997 unsigned long our_int = 0;
d71e1be8 1998
195c5f98 1999 our_int = readl(adapter->crb_int_state_reg);
092bc571 2000
d71e1be8 2001 /* not our interrupt */
092bc571 2002 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 2003 return IRQ_NONE;
2004
092bc571 2005 /* claim interrupt */
195c5f98 2006 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
e01872af 2007
195c5f98 2008 /* clear interrupt */
d8b100c5 2009 netxen_nic_disable_int(sds_ring);
195c5f98 2010 }
092bc571 2011
195c5f98 2012 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 2013 /* read twice to ensure write is flushed */
195c5f98
AKS		 2014 readl(adapter->isr_int_vec);
2015 readl(adapter->isr_int_vec);
092bc571 2016
d8b100c5 2017 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 2018
2019 return IRQ_HANDLED;
2020}
2021
e4c93c81 2022static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 2023{
d8b100c5
DP		 2024 struct nx_host_sds_ring *sds_ring = data;
2025 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 2026
092bc571 2027 /* clear interrupt */
195c5f98 2028 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 2029
d8b100c5 2030 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 2031 return IRQ_HANDLED;
2032}
2033
b3df68f8
DP		 2034static irqreturn_t netxen_msix_intr(int irq, void *data)
2035{
d8b100c5 2036 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 2037
d8b100c5 2038 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 2039 return IRQ_HANDLED;
2040}
2041
bea3348e 2042static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 2043{
d8b100c5
DP		 2044 struct nx_host_sds_ring *sds_ring =
2045 container_of(napi, struct nx_host_sds_ring, napi);
2046
2047 struct netxen_adapter *adapter = sds_ring->adapter;
2048
05aaa02d 2049 int tx_complete;
bea3348e 2050 int work_done;
3d396eb1 2051
05aaa02d 2052 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 2053
d8b100c5 2054 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 2055
05aaa02d 2056 if ((work_done < budget) && tx_complete) {
d8b100c5 2057 napi_complete(&sds_ring->napi);
f2251f66 2058 if (test_bit(__NX_DEV_UP, &adapter->state))
b2af9cb0 2059 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 2060 }
2061
bea3348e 2062 return work_done;
3d396eb1
AK		 2063}
2064
2065#ifdef CONFIG_NET_POLL_CONTROLLER
2066static void netxen_nic_poll_controller(struct net_device *netdev)
2067{
3176ff3e 2068 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 2069 disable_irq(adapter->irq);
1494a814 2070 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 2071 enable_irq(adapter->irq);
2072}
2073#endif
3d396eb1 2074
6a581e93
DP		 2075static int
2076nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2077{
2078 int count;
2079 if (netxen_api_lock(adapter))
2080 return -EIO;
2081
2082 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2083
2084 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2085
2086 netxen_api_unlock(adapter);
2087 return count;
2088}
2089
2090static int
2091nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2092{
2093 int count;
2094 if (netxen_api_lock(adapter))
2095 return -EIO;
2096
2097 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2098 WARN_ON(count == 0);
2099
2100 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2101
2102 if (count == 0)
2103 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2104
2105 netxen_api_unlock(adapter);
2106 return count;
2107}
2108
74c520da
AKS		 2109static void
2110nx_dev_request_reset(struct netxen_adapter *adapter)
2111{
2112 u32 state;
2113
2114 if (netxen_api_lock(adapter))
2115 return;
2116
2117 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2118
2119 if (state != NX_DEV_INITALIZING)
2120 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2121
2122 netxen_api_unlock(adapter);
2123}
2124
6a581e93
DP		 2125static int
2126netxen_can_start_firmware(struct netxen_adapter *adapter)
2127{
2128 int count;
2129 int can_start = 0;
2130
2131 if (netxen_api_lock(adapter))
2132 return 0;
2133
2134 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2135
2136 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2137 count = 0;
2138
2139 if (count == 0) {
2140 can_start = 1;
2141 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2142 }
2143
2144 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2145
2146 netxen_api_unlock(adapter);
2147
2148 return can_start;
2149}
2150
2151static void
2152netxen_schedule_work(struct netxen_adapter *adapter,
2153 work_func_t func, int delay)
2154{
2155 INIT_DELAYED_WORK(&adapter->fw_work, func);
2156 schedule_delayed_work(&adapter->fw_work, delay);
2157}
2158
2159static void
2160netxen_cancel_fw_work(struct netxen_adapter *adapter)
2161{
2162 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2163 msleep(10);
2164
2165 cancel_delayed_work_sync(&adapter->fw_work);
2166}
2167
2168static void
2169netxen_attach_work(struct work_struct *work)
2170{
2171 struct netxen_adapter *adapter = container_of(work,
2172 struct netxen_adapter, fw_work.work);
2173 struct net_device *netdev = adapter->netdev;
2174 int err = 0;
2175
2176 if (netif_running(netdev)) {
2177 err = netxen_nic_attach(adapter);
2178 if (err)
2179 goto done;
2180
2181 err = netxen_nic_up(adapter, netdev);
2182 if (err) {
2183 netxen_nic_detach(adapter);
2184 goto done;
2185 }
2186
d0725e4d 2187 netxen_config_indev_addr(netdev, NETDEV_UP);
6a581e93
DP		 2188 }
2189
2190 netif_device_attach(netdev);
2191
2192done:
2193 adapter->fw_fail_cnt = 0;
2194 clear_bit(__NX_RESETTING, &adapter->state);
2195 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2196}
2197
2198static void
2199netxen_fwinit_work(struct work_struct *work)
2200{
2201 struct netxen_adapter *adapter = container_of(work,
2202 struct netxen_adapter, fw_work.work);
2203 int dev_state;
2204
2205 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2206
2207 switch (dev_state) {
2208 case NX_DEV_COLD:
2209 case NX_DEV_READY:
74c520da
AKS		 2210 if (!netxen_start_firmware(adapter)) {
2211 netxen_schedule_work(adapter, netxen_attach_work, 0);
2212 return;
2213 }
2214 break;
6a581e93
DP		 2215
2216 case NX_DEV_INITALIZING:
2217 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2218 netxen_schedule_work(adapter,
2219 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2220 return;
2221 }
6a581e93
DP		 2222
2223 case NX_DEV_FAILED:
2224 default:
8f9b3f69 2225 nx_incr_dev_ref_cnt(adapter);
6a581e93
DP		 2226 break;
2227 }
2228
6a581e93
DP		 2229 clear_bit(__NX_RESETTING, &adapter->state);
2230}
2231
2232static void
2233netxen_detach_work(struct work_struct *work)
2234{
2235 struct netxen_adapter *adapter = container_of(work,
2236 struct netxen_adapter, fw_work.work);
2237 struct net_device *netdev = adapter->netdev;
2238 int ref_cnt, delay;
2239 u32 status;
2240
2241 netif_device_detach(netdev);
2242
6f771419 2243 netxen_nic_down(adapter, netdev);
6a581e93
DP		 2244
2245 netxen_nic_detach(adapter);
2246
2247 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2248
6a581e93 2249 if (status & NX_RCODE_FATAL_ERROR)
8f9b3f69 2250 goto err_ret;
6a581e93
DP		 2251
2252 if (adapter->temp == NX_TEMP_PANIC)
8f9b3f69
AKS		 2253 goto err_ret;
2254
2255 ref_cnt = nx_decr_dev_ref_cnt(adapter);
6a581e93
DP		 2256
2257 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2258
2259 adapter->fw_wait_cnt = 0;
2260 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
8f9b3f69
AKS		 2261
2262 return;
2263
2264err_ret:
2265 clear_bit(__NX_RESETTING, &adapter->state);
6a581e93
DP		 2266}
2267
2268static int
2269netxen_check_health(struct netxen_adapter *adapter)
2270{
2271 u32 state, heartbit;
2272 struct net_device *netdev = adapter->netdev;
2273
2274 if (netxen_nic_check_temp(adapter))
2275 goto detach;
2276
74c520da
AKS		 2277 if (adapter->need_fw_reset) {
2278 nx_dev_request_reset(adapter);
2279 goto detach;
2280 }
2281
6a581e93
DP		 2282 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2283 if (state == NX_DEV_NEED_RESET)
2284 goto detach;
2285
2286 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2287 return 0;
2288
2289 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2290 if (heartbit != adapter->heartbit) {
2291 adapter->heartbit = heartbit;
2292 adapter->fw_fail_cnt = 0;
2293 return 0;
2294 }
2295
2296 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2297 return 0;
2298
2299 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2300
2301 dev_info(&netdev->dev, "firmware hang detected\n");
2302
2303detach:
caa2dd53
NK		 2304 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2305 !test_and_set_bit(__NX_RESETTING, &adapter->state))
6a581e93
DP		 2306 netxen_schedule_work(adapter, netxen_detach_work, 0);
2307 return 1;
2308}
2309
2310static void
2311netxen_fw_poll_work(struct work_struct *work)
2312{
2313 struct netxen_adapter *adapter = container_of(work,
2314 struct netxen_adapter, fw_work.work);
2315
2316 if (test_bit(__NX_RESETTING, &adapter->state))
2317 goto reschedule;
2318
2319 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2320 if (!adapter->has_link_events) {
2321
2322 netxen_nic_handle_phy_intr(adapter);
2323
2324 if (adapter->link_changed)
2325 netxen_nic_set_link_parameters(adapter);
2326 }
2327 }
2328
2329 if (netxen_check_health(adapter))
2330 return;
2331
2332reschedule:
2333 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2334}
2335
fa3ce355
NK		 2336static ssize_t
2337netxen_store_bridged_mode(struct device *dev,
2338 struct device_attribute *attr, const char *buf, size_t len)
2339{
2340 struct net_device *net = to_net_dev(dev);
2341 struct netxen_adapter *adapter = netdev_priv(net);
2342 unsigned long new;
2343 int ret = -EINVAL;
2344
2345 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2346 goto err_out;
2347
2348 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2349 goto err_out;
2350
2351 if (strict_strtoul(buf, 2, &new))
2352 goto err_out;
2353
2354 if (!netxen_config_bridged_mode(adapter, !!new))
2355 ret = len;
2356
2357err_out:
2358 return ret;
2359}
2360
2361static ssize_t
2362netxen_show_bridged_mode(struct device *dev,
2363 struct device_attribute *attr, char *buf)
2364{
2365 struct net_device *net = to_net_dev(dev);
2366 struct netxen_adapter *adapter;
2367 int bridged_mode = 0;
2368
2369 adapter = netdev_priv(net);
2370
2371 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2372 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2373
2374 return sprintf(buf, "%d\n", bridged_mode);
2375}
2376
2377static struct device_attribute dev_attr_bridged_mode = {
2378 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2379 .show = netxen_show_bridged_mode,
2380 .store = netxen_store_bridged_mode,
2381};
2382
70f9cf89
DP		 2383static ssize_t
2384netxen_store_diag_mode(struct device *dev,
2385 struct device_attribute *attr, const char *buf, size_t len)
2386{
2387 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2388 unsigned long new;
2389
2390 if (strict_strtoul(buf, 2, &new))
2391 return -EINVAL;
2392
2393 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2394 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2395
2396 return len;
2397}
2398
2399static ssize_t
2400netxen_show_diag_mode(struct device *dev,
2401 struct device_attribute *attr, char *buf)
2402{
2403 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2404
2405 return sprintf(buf, "%d\n",
2406 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2407}
2408
2409static struct device_attribute dev_attr_diag_mode = {
2410 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2411 .show = netxen_show_diag_mode,
2412 .store = netxen_store_diag_mode,
2413};
2414
2415static int
2416netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2417 loff_t offset, size_t size)
2418{
2419 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2420 return -EIO;
2421
2422 if ((size != 4) || (offset & 0x3))
2423 return -EINVAL;
2424
2425 if (offset < NETXEN_PCI_CRBSPACE)
2426 return -EINVAL;
2427
2428 return 0;
2429}
2430
2431static ssize_t
2432netxen_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
2433 char *buf, loff_t offset, size_t size)
2434{
2435 struct device *dev = container_of(kobj, struct device, kobj);
2436 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2437 u32 data;
2438 int ret;
2439
2440 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2441 if (ret != 0)
2442 return ret;
2443
2444 data = NXRD32(adapter, offset);
2445 memcpy(buf, &data, size);
2446 return size;
2447}
2448
2449static ssize_t
2450netxen_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
2451 char *buf, loff_t offset, size_t size)
2452{
2453 struct device *dev = container_of(kobj, struct device, kobj);
2454 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2455 u32 data;
2456 int ret;
2457
2458 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2459 if (ret != 0)
2460 return ret;
2461
2462 memcpy(&data, buf, size);
2463 NXWR32(adapter, offset, data);
2464 return size;
2465}
2466
2467static int
2468netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2469 loff_t offset, size_t size)
2470{
2471 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2472 return -EIO;
2473
2474 if ((size != 8) || (offset & 0x7))
2475 return -EIO;
2476
2477 return 0;
2478}
2479
2480static ssize_t
2481netxen_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
2482 char *buf, loff_t offset, size_t size)
2483{
2484 struct device *dev = container_of(kobj, struct device, kobj);
2485 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2486 u64 data;
2487 int ret;
2488
2489 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2490 if (ret != 0)
2491 return ret;
2492
2493 if (adapter->pci_mem_read(adapter, offset, &data))
2494 return -EIO;
2495
2496 memcpy(buf, &data, size);
2497
2498 return size;
2499}
2500
2501ssize_t netxen_sysfs_write_mem(struct kobject *kobj,
2502 struct bin_attribute *attr, char *buf,
2503 loff_t offset, size_t size)
2504{
2505 struct device *dev = container_of(kobj, struct device, kobj);
2506 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2507 u64 data;
2508 int ret;
2509
2510 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2511 if (ret != 0)
2512 return ret;
2513
2514 memcpy(&data, buf, size);
2515
2516 if (adapter->pci_mem_write(adapter, offset, data))
2517 return -EIO;
2518
2519 return size;
2520}
2521
2522
2523static struct bin_attribute bin_attr_crb = {
2524 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2525 .size = 0,
2526 .read = netxen_sysfs_read_crb,
2527 .write = netxen_sysfs_write_crb,
2528};
2529
2530static struct bin_attribute bin_attr_mem = {
2531 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2532 .size = 0,
2533 .read = netxen_sysfs_read_mem,
2534 .write = netxen_sysfs_write_mem,
2535};
2536
0531d7b8 2537#ifdef CONFIG_MODULES
caa2dd53
NK		 2538static ssize_t
2539netxen_store_auto_fw_reset(struct module_attribute *mattr,
2540 struct module *mod, const char *buf, size_t count)
2541
2542{
2543 unsigned long new;
2544
2545 if (strict_strtoul(buf, 16, &new))
2546 return -EINVAL;
2547
2548 if ((new == AUTO_FW_RESET_ENABLED) || (new == AUTO_FW_RESET_DISABLED)) {
2549 auto_fw_reset = new;
2550 return count;
2551 }
2552
2553 return -EINVAL;
2554}
2555
2556static ssize_t
2557netxen_show_auto_fw_reset(struct module_attribute *mattr,
2558 struct module *mod, char *buf)
2559
2560{
2561 if (auto_fw_reset == AUTO_FW_RESET_ENABLED)
2562 return sprintf(buf, "enabled\n");
2563 else
2564 return sprintf(buf, "disabled\n");
2565}
2566
2567static struct module_attribute mod_attr_fw_reset = {
2568 .attr = {.name = "auto_fw_reset", .mode = (S_IRUGO | S_IWUSR)},
2569 .show = netxen_show_auto_fw_reset,
2570 .store = netxen_store_auto_fw_reset,
2571};
0531d7b8 2572#endif
caa2dd53 2573
fa3ce355
NK		 2574static void
2575netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2576{
2577 struct net_device *netdev = adapter->netdev;
2578 struct device *dev = &netdev->dev;
2579
2580 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2581 /* bridged_mode control */
2582 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2583 dev_warn(&netdev->dev,
2584 "failed to create bridged_mode sysfs entry\n");
2585 }
2586 }
2587}
2588
2589static void
2590netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2591{
2592 struct net_device *netdev = adapter->netdev;
2593 struct device *dev = &netdev->dev;
2594
2595 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2596 device_remove_file(dev, &dev_attr_bridged_mode);
2597}
2598
70f9cf89
DP		 2599static void
2600netxen_create_diag_entries(struct netxen_adapter *adapter)
2601{
2602 struct pci_dev *pdev = adapter->pdev;
2603 struct device *dev;
2604
2605 dev = &pdev->dev;
2606 if (device_create_file(dev, &dev_attr_diag_mode))
2607 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2608 if (device_create_bin_file(dev, &bin_attr_crb))
2609 dev_info(dev, "failed to create crb sysfs entry\n");
2610 if (device_create_bin_file(dev, &bin_attr_mem))
2611 dev_info(dev, "failed to create mem sysfs entry\n");
2612}
2613
2614
2615static void
2616netxen_remove_diag_entries(struct netxen_adapter *adapter)
2617{
2618 struct pci_dev *pdev = adapter->pdev;
2619 struct device *dev = &pdev->dev;
2620
2621 device_remove_file(dev, &dev_attr_diag_mode);
2622 device_remove_bin_file(dev, &bin_attr_crb);
2623 device_remove_bin_file(dev, &bin_attr_mem);
2624}
2625
044824d9
DP		 2626#ifdef CONFIG_INET
2627
6598b169
DP		 2628#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2629
2630static int
2631netxen_destip_supported(struct netxen_adapter *adapter)
2632{
2633 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2634 return 0;
2635
2636 if (adapter->ahw.cut_through)
2637 return 0;
2638
2639 return 1;
2640}
2641
d0725e4d
AKS		 2642static void
2643netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2644{
2645 struct in_device *indev;
2646 struct netxen_adapter *adapter = netdev_priv(dev);
2647
3db76755 2648 if (!netxen_destip_supported(adapter))
d0725e4d
AKS		 2649 return;
2650
2651 indev = in_dev_get(dev);
2652 if (!indev)
2653 return;
2654
2655 for_ifa(indev) {
2656 switch (event) {
2657 case NETDEV_UP:
2658 netxen_config_ipaddr(adapter,
2659 ifa->ifa_address, NX_IP_UP);
2660 break;
2661 case NETDEV_DOWN:
2662 netxen_config_ipaddr(adapter,
2663 ifa->ifa_address, NX_IP_DOWN);
2664 break;
2665 default:
2666 break;
2667 }
2668 } endfor_ifa(indev);
2669
2670 in_dev_put(indev);
2671 return;
2672}
2673
6598b169
DP		 2674static int netxen_netdev_event(struct notifier_block *this,
2675 unsigned long event, void *ptr)
2676{
2677 struct netxen_adapter *adapter;
2678 struct net_device *dev = (struct net_device *)ptr;
6598b169
DP		 2679
2680recheck:
2681 if (dev == NULL)
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
d0725e4d 2694 if (!adapter)
6598b169
DP		 2695 goto done;
2696
2697 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2698 goto done;
2699
d0725e4d 2700 netxen_config_indev_addr(dev, event);
6598b169
DP		 2701done:
2702 return NOTIFY_DONE;
2703}
2704
2705static int
2706netxen_inetaddr_event(struct notifier_block *this,
2707 unsigned long event, void *ptr)
2708{
2709 struct netxen_adapter *adapter;
2710 struct net_device *dev;
2711
2712 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2713
2714 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2715
2716recheck:
2717 if (dev == NULL || !netif_running(dev))
2718 goto done;
2719
2720 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2721 dev = vlan_dev_real_dev(dev);
2722 goto recheck;
2723 }
2724
2725 if (!is_netxen_netdev(dev))
2726 goto done;
2727
2728 adapter = netdev_priv(dev);
2729
2730 if (!adapter || !netxen_destip_supported(adapter))
2731 goto done;
2732
2733 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2734 goto done;
2735
2736 switch (event) {
2737 case NETDEV_UP:
2738 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2739 break;
2740 case NETDEV_DOWN:
2741 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2742 break;
2743 default:
2744 break;
2745 }
2746
2747done:
2748 return NOTIFY_DONE;
2749}
2750
2751static struct notifier_block netxen_netdev_cb = {
2752 .notifier_call = netxen_netdev_event,
2753};
2754
2755static struct notifier_block netxen_inetaddr_cb = {
2756 .notifier_call = netxen_inetaddr_event,
2757};
9feae56c
RD		 2758#else
2759static void
2760netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2761{ }
044824d9 2762#endif
6598b169 2763
3d396eb1
AK		 2764static struct pci_driver netxen_driver = {
2765 .name = netxen_nic_driver_name,
2766 .id_table = netxen_pci_tbl,
2767 .probe = netxen_nic_probe,
0b72e659 2768 .remove = __devexit_p(netxen_nic_remove),
01542cd1 2769#ifdef CONFIG_PM
0b72e659 2770 .suspend = netxen_nic_suspend,
22b5794b 2771 .resume = netxen_nic_resume,
01542cd1 2772#endif
22b5794b 2773 .shutdown = netxen_nic_shutdown
3d396eb1
AK		 2774};
2775
3d396eb1
AK		 2776static int __init netxen_init_module(void)
2777{
0531d7b8 2778#ifdef CONFIG_MODULES
caa2dd53 2779 struct module *mod = THIS_MODULE;
0531d7b8 2780#endif
caa2dd53 2781
ff4fbd43
DP		 2782 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2783
044824d9 2784#ifdef CONFIG_INET
6598b169
DP		 2785 register_netdevice_notifier(&netxen_netdev_cb);
2786 register_inetaddr_notifier(&netxen_inetaddr_cb);
044824d9 2787#endif
6598b169 2788
0531d7b8 2789#ifdef CONFIG_MODULES
caa2dd53
NK		 2790 if (sysfs_create_file(&mod->mkobj.kobj, &mod_attr_fw_reset.attr))
2791 printk(KERN_ERR "%s: Failed to create auto_fw_reset "
2792 "sysfs entry.", netxen_nic_driver_name);
0531d7b8 2793#endif
caa2dd53 2794
184231bd 2795 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 2796}
2797
2798module_init(netxen_init_module);
2799
2800static void __exit netxen_exit_module(void)
2801{
0531d7b8 2802#ifdef CONFIG_MODULES
caa2dd53
NK		 2803 struct module *mod = THIS_MODULE;
2804
2805 sysfs_remove_file(&mod->mkobj.kobj, &mod_attr_fw_reset.attr);
0531d7b8 2806#endif
caa2dd53 2807
3d396eb1 2808 pci_unregister_driver(&netxen_driver);
6598b169 2809
044824d9 2810#ifdef CONFIG_INET
6598b169
DP		 2811 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2812 unregister_netdevice_notifier(&netxen_netdev_cb);
044824d9 2813#endif
3d396eb1
AK		 2814}
2815
2816module_exit(netxen_exit_module);
Linux 6.x block layer and io_uring tree(s)