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netdev: convert bulk of drivers to netdev_tx_t
[mirror_ubuntu-eoan-kernel.git] / drivers / net / netxen / netxen_nic_main.c
CommitLineData
3d396eb1 1/*
5d242f1c 2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3d396eb1 3 * All rights reserved.
80922fbc 4 *
3d396eb1
AK		 5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
80922fbc 9 *
3d396eb1
AK		 10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
80922fbc 14 *
3d396eb1
AK		 15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
80922fbc 19 *
3d396eb1
AK		 20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
80922fbc 22 *
3d396eb1
AK		 23 * Contact Information:
24 * info@netxen.com
5d242f1c
DP		 25 * NetXen Inc,
26 * 18922 Forge Drive
27 * Cupertino, CA 95014-0701
3d396eb1
AK		 28 *
29 */
30
cb8011ad 31#include <linux/vmalloc.h>
e98e3350 32#include <linux/interrupt.h>
3d396eb1
AK		 33#include "netxen_nic_hw.h"
34
35#include "netxen_nic.h"
3d396eb1 36
1494a814 37#include <linux/dma-mapping.h>
391587c3 38#include <linux/if_vlan.h>
c9bdd4b5 39#include <net/ip.h>
00977784 40#include <linux/ipv6.h>
6598b169 41#include <linux/inetdevice.h>
1494a814 42
3d396eb1
AK		 43MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
44MODULE_LICENSE("GPL");
45MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
46
ceded32f 47char netxen_nic_driver_name[] = "netxen_nic";
3d396eb1 48static char netxen_nic_driver_string[] = "NetXen Network Driver version "
cb8011ad 49 NETXEN_NIC_LINUX_VERSIONID;
3d396eb1 50
2956640d
DP		 51static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
52
53/* Default to restricted 1G auto-neg mode */
54static int wol_port_mode = 5;
55
56static int use_msi = 1;
57
58static int use_msi_x = 1;
59
3d396eb1
AK		 60/* Local functions to NetXen NIC driver */
61static int __devinit netxen_nic_probe(struct pci_dev *pdev,
2956640d 62 const struct pci_device_id *ent);
3d396eb1
AK		 63static void __devexit netxen_nic_remove(struct pci_dev *pdev);
64static int netxen_nic_open(struct net_device *netdev);
65static int netxen_nic_close(struct net_device *netdev);
61357325
SH		 66static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
67 struct net_device *);
3d396eb1 68static void netxen_tx_timeout(struct net_device *netdev);
f17443f4 69static void netxen_reset_task(struct work_struct *work);
3d396eb1 70static void netxen_watchdog(unsigned long);
bea3348e 71static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 72#ifdef CONFIG_NET_POLL_CONTROLLER
73static void netxen_nic_poll_controller(struct net_device *netdev);
74#endif
fa3ce355
NK		 75
76static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
77static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
78
1494a814 79static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 80static irqreturn_t netxen_msi_intr(int irq, void *data);
b3df68f8 81static irqreturn_t netxen_msix_intr(int irq, void *data);
3d396eb1
AK		 82
83/* PCI Device ID Table */
70081ac5 84#define ENTRY(device) \
040dec3b 85 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 86 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
87
3d396eb1 88static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 89 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
90 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
91 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
92 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
93 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
94 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
95 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
96 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 97 {0,}
98};
99
100MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
101
7830b22c
DP		 102static uint32_t crb_cmd_producer[4] = {
103 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
104 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
105};
106
c9fc891f 107void
3ce06a32 108netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
cb2107be 109 struct nx_host_tx_ring *tx_ring)
3176ff3e 110{
cb2107be
DP		 111 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
112
113 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
114 netif_stop_queue(adapter->netdev);
115 smp_mb();
116 }
3176ff3e
MT		 117}
118
7830b22c
DP		 119static uint32_t crb_cmd_consumer[4] = {
120 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
121 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
122};
123
3ce06a32
DP		 124static inline void
125netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
cb2107be 126 struct nx_host_tx_ring *tx_ring)
3176ff3e 127{
cb2107be 128 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
3176ff3e
MT		 129}
130
2956640d 131static uint32_t msi_tgt_status[8] = {
443be796 132 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 133 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
134 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
135 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 136};
137
2956640d
DP		 138static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
139
d8b100c5 140static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 141{
d8b100c5
DP		 142 struct netxen_adapter *adapter = sds_ring->adapter;
143
f98a9f69 144 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 145}
146
d8b100c5 147static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 148{
d8b100c5
DP		 149 struct netxen_adapter *adapter = sds_ring->adapter;
150
f98a9f69 151 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 152
092bc571
DP		 153 if (!NETXEN_IS_MSI_FAMILY(adapter))
154 adapter->pci_write_immediate(adapter,
155 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
4638aef1
SH		 156}
157
71dcddbd
DP		 158static int
159netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
160{
161 int size = sizeof(struct nx_host_sds_ring) * count;
162
163 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
164
165 return (recv_ctx->sds_rings == NULL);
166}
167
d8b100c5 168static void
71dcddbd
DP		 169netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
170{
171 if (recv_ctx->sds_rings != NULL)
172 kfree(recv_ctx->sds_rings);
232e7d68
DP		 173
174 recv_ctx->sds_rings = NULL;
71dcddbd
DP		 175}
176
177static int
d8b100c5
DP		 178netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
179{
180 int ring;
181 struct nx_host_sds_ring *sds_ring;
182 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
183
71dcddbd 184 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
f17443f4 185 return -ENOMEM;
71dcddbd 186
d8b100c5
DP		 187 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
188 sds_ring = &recv_ctx->sds_rings[ring];
189 netif_napi_add(netdev, &sds_ring->napi,
190 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
191 }
71dcddbd
DP		 192
193 return 0;
d8b100c5
DP		 194}
195
232e7d68
DP		 196static void
197netxen_napi_del(struct netxen_adapter *adapter)
198{
199 int ring;
200 struct nx_host_sds_ring *sds_ring;
201 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
202
203 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
204 sds_ring = &recv_ctx->sds_rings[ring];
205 netif_napi_del(&sds_ring->napi);
206 }
207
208 netxen_free_sds_rings(&adapter->recv_ctx);
209}
210
d8b100c5
DP		 211static void
212netxen_napi_enable(struct netxen_adapter *adapter)
213{
214 int ring;
215 struct nx_host_sds_ring *sds_ring;
216 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
217
218 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
219 sds_ring = &recv_ctx->sds_rings[ring];
220 napi_enable(&sds_ring->napi);
221 netxen_nic_enable_int(sds_ring);
222 }
223}
224
225static void
226netxen_napi_disable(struct netxen_adapter *adapter)
227{
228 int ring;
229 struct nx_host_sds_ring *sds_ring;
230 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
231
232 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
233 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 234 netxen_nic_disable_int(sds_ring);
b2af9cb0
DP		 235 napi_synchronize(&sds_ring->napi);
236 napi_disable(&sds_ring->napi);
d8b100c5
DP		 237 }
238}
239
50c643e7 240static int nx_set_dma_mask(struct netxen_adapter *adapter)
2956640d
DP		 241{
242 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 243 uint64_t mask, cmask;
244
245 adapter->pci_using_dac = 0;
2956640d 246
6afd142f 247 mask = DMA_BIT_MASK(32);
6afd142f 248 cmask = DMA_BIT_MASK(32);
1f434f63 249
50c643e7 250 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1f434f63 251#ifndef CONFIG_IA64
6afd142f 252 mask = DMA_BIT_MASK(35);
1f434f63 253#endif
50c643e7
DP		 254 } else {
255 mask = DMA_BIT_MASK(39);
256 cmask = mask;
257 }
258
2956640d 259 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 260 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 261 adapter->pci_using_dac = 1;
262 return 0;
263 }
2956640d 264
1f434f63
DP		 265 return -EIO;
266}
267
268/* Update addressable range if firmware supports it */
269static int
270nx_update_dma_mask(struct netxen_adapter *adapter)
271{
272 int change, shift, err;
50c643e7 273 uint64_t mask, old_mask, old_cmask;
1f434f63
DP		 274 struct pci_dev *pdev = adapter->pdev;
275
276 change = 0;
277
f98a9f69 278 shift = NXRD32(adapter, CRB_DMA_SHIFT);
f60f7856 279 if (shift > 32)
1f434f63
DP		 280 return 0;
281
282 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
283 change = 1;
284 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
285 change = 1;
286
287 if (change) {
288 old_mask = pdev->dma_mask;
50c643e7
DP		 289 old_cmask = pdev->dev.coherent_dma_mask;
290
f60f7856 291 mask = DMA_BIT_MASK(32+shift);
1f434f63
DP		 292
293 err = pci_set_dma_mask(pdev, mask);
294 if (err)
50c643e7
DP		 295 goto err_out;
296
297 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
298
299 err = pci_set_consistent_dma_mask(pdev, mask);
300 if (err)
301 goto err_out;
302 }
303 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
2956640d
DP		 304 }
305
2956640d 306 return 0;
50c643e7
DP		 307
308err_out:
309 pci_set_dma_mask(pdev, old_mask);
310 pci_set_consistent_dma_mask(pdev, old_cmask);
311 return err;
2956640d
DP		 312}
313
24767ab1
DP		 314static void
315netxen_check_options(struct netxen_adapter *adapter)
2956640d 316{
24767ab1
DP		 317 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
318 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
319 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
320 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
321 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
322 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
323 }
2956640d 324
f6d21f44
DP		 325 adapter->msix_supported = 0;
326 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
c7860a2a 327 adapter->msix_supported = !!use_msi_x;
f6d21f44
DP		 328 adapter->rss_supported = !!use_msi_x;
329 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
330 switch (adapter->ahw.board_type) {
331 case NETXEN_BRDTYPE_P2_SB31_10G:
332 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
f6d21f44
DP		 333 adapter->msix_supported = !!use_msi_x;
334 adapter->rss_supported = !!use_msi_x;
335 break;
336 default:
337 break;
338 }
339 }
2956640d 340
24767ab1 341 adapter->num_txd = MAX_CMD_DESCRIPTORS;
2956640d 342
24767ab1
DP		 343 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
344 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
345 adapter->max_rds_rings = 3;
346 } else {
347 adapter->num_lro_rxd = 0;
348 adapter->max_rds_rings = 2;
349 }
2956640d
DP		 350}
351
352static int
353netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
354{
27c915a4 355 u32 val, timeout;
2956640d
DP		 356
357 if (first_boot == 0x55555555) {
358 /* This is the first boot after power up */
f98a9f69 359 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 360
361 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
362 return 0;
2956640d
DP		 363
364 /* PCI bus master workaround */
f98a9f69 365 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 366 if (!(first_boot & 0x4)) {
367 first_boot |= 0x4;
f98a9f69
DP		 368 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
369 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 370 }
371
372 /* This is the first boot after power up */
f98a9f69 373 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 374 if (first_boot != 0x80000f) {
375 /* clear the register for future unloads/loads */
f98a9f69 376 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 377 return -EIO;
2956640d
DP		 378 }
379
27c915a4 380 /* Start P2 boot loader */
f98a9f69
DP		 381 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
382 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 383 timeout = 0;
384 do {
385 msleep(1);
f98a9f69 386 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 387
388 if (++timeout > 5000)
389 return -EIO;
390
391 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 392 }
27c915a4 393 return 0;
2956640d
DP		 394}
395
396static void netxen_set_port_mode(struct netxen_adapter *adapter)
397{
398 u32 val, data;
399
1e2d0059 400 val = adapter->ahw.board_type;
2956640d
DP		 401 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
402 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
403 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
404 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 405 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 406 } else if (port_mode == NETXEN_PORT_MODE_XG) {
407 data = NETXEN_PORT_MODE_XG;
f98a9f69 408 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 409 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
410 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 411 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 412 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
413 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 414 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 415 } else {
416 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 417 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 418 }
419
420 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
421 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
422 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
423 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
424 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
425 }
f98a9f69 426 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 427 }
428}
429
2956640d
DP		 430static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
431{
432 u32 control;
433 int pos;
434
435 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
436 if (pos) {
437 pci_read_config_dword(pdev, pos, &control);
438 if (enable)
439 control |= PCI_MSIX_FLAGS_ENABLE;
440 else
441 control = 0;
442 pci_write_config_dword(pdev, pos, control);
443 }
444}
445
be339aee 446static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 447{
448 int i;
449
be339aee 450 for (i = 0; i < count; i++)
2956640d
DP		 451 adapter->msix_entries[i].entry = i;
452}
453
9dc28efe
DP		 454static int
455netxen_read_mac_addr(struct netxen_adapter *adapter)
456{
457 int i;
458 unsigned char *p;
459 __le64 mac_addr;
9dc28efe
DP		 460 struct net_device *netdev = adapter->netdev;
461 struct pci_dev *pdev = adapter->pdev;
462
9dc28efe
DP		 463 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
464 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
465 return -EIO;
466 } else {
467 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
468 return -EIO;
469 }
470
471 p = (unsigned char *)&mac_addr;
472 for (i = 0; i < 6; i++)
473 netdev->dev_addr[i] = *(p + 5 - i);
474
475 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
476
477 /* set station address */
478
e174961c
JB		 479 if (!is_valid_ether_addr(netdev->perm_addr))
480 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 481
482 return 0;
483}
484
3d0a3cc9
DP		 485int netxen_nic_set_mac(struct net_device *netdev, void *p)
486{
487 struct netxen_adapter *adapter = netdev_priv(netdev);
488 struct sockaddr *addr = p;
489
490 if (!is_valid_ether_addr(addr->sa_data))
491 return -EINVAL;
492
493 if (netif_running(netdev)) {
494 netif_device_detach(netdev);
495 netxen_napi_disable(adapter);
496 }
497
498 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
499 adapter->macaddr_set(adapter, addr->sa_data);
500
501 if (netif_running(netdev)) {
502 netif_device_attach(netdev);
503 netxen_napi_enable(adapter);
504 }
505 return 0;
506}
507
1abd266f
SH		 508static void netxen_set_multicast_list(struct net_device *dev)
509{
510 struct netxen_adapter *adapter = netdev_priv(dev);
511
3d0a3cc9 512 adapter->set_multi(dev);
1abd266f
SH		 513}
514
515static const struct net_device_ops netxen_netdev_ops = {
516 .ndo_open = netxen_nic_open,
517 .ndo_stop = netxen_nic_close,
518 .ndo_start_xmit = netxen_nic_xmit_frame,
519 .ndo_get_stats = netxen_nic_get_stats,
520 .ndo_validate_addr = eth_validate_addr,
521 .ndo_set_multicast_list = netxen_set_multicast_list,
522 .ndo_set_mac_address = netxen_nic_set_mac,
523 .ndo_change_mtu = netxen_nic_change_mtu,
524 .ndo_tx_timeout = netxen_tx_timeout,
525#ifdef CONFIG_NET_POLL_CONTROLLER
526 .ndo_poll_controller = netxen_nic_poll_controller,
527#endif
528};
529
97daee83
DP		 530static void
531netxen_setup_intr(struct netxen_adapter *adapter)
532{
533 struct netxen_legacy_intr_set *legacy_intrp;
534 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 535 int err, num_msix;
536
537 if (adapter->rss_supported) {
538 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
539 MSIX_ENTRIES_PER_ADAPTER : 2;
540 } else
541 num_msix = 1;
542
543 adapter->max_sds_rings = 1;
97daee83
DP		 544
545 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 546
547 if (adapter->ahw.revision_id >= NX_P3_B0)
548 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
549 else
550 legacy_intrp = &legacy_intr[0];
551 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
552 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
553 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
554 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
555
556 netxen_set_msix_bit(pdev, 0);
557
558 if (adapter->msix_supported) {
559
be339aee
DP		 560 netxen_init_msix_entries(adapter, num_msix);
561 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
562 if (err == 0) {
563 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
564 netxen_set_msix_bit(pdev, 1);
97daee83 565
be339aee
DP		 566 if (adapter->rss_supported)
567 adapter->max_sds_rings = num_msix;
97daee83 568
be339aee
DP		 569 dev_info(&pdev->dev, "using msi-x interrupts\n");
570 return;
571 }
572
573 if (err > 0)
574 pci_disable_msix(pdev);
575
576 /* fall through for msi */
97daee83 577 }
be339aee
DP		 578
579 if (use_msi && !pci_enable_msi(pdev)) {
580 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
581 adapter->msi_tgt_status =
582 msi_tgt_status[adapter->ahw.pci_func];
583 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 584 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 585 return;
586 }
587
588 dev_info(&pdev->dev, "using legacy interrupts\n");
589 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 590}
591
592static void
593netxen_teardown_intr(struct netxen_adapter *adapter)
594{
595 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
596 pci_disable_msix(adapter->pdev);
597 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
598 pci_disable_msi(adapter->pdev);
599}
600
601static void
602netxen_cleanup_pci_map(struct netxen_adapter *adapter)
603{
604 if (adapter->ahw.db_base != NULL)
605 iounmap(adapter->ahw.db_base);
606 if (adapter->ahw.pci_base0 != NULL)
607 iounmap(adapter->ahw.pci_base0);
608 if (adapter->ahw.pci_base1 != NULL)
609 iounmap(adapter->ahw.pci_base1);
610 if (adapter->ahw.pci_base2 != NULL)
611 iounmap(adapter->ahw.pci_base2);
612}
613
614static int
615netxen_setup_pci_map(struct netxen_adapter *adapter)
616{
617 void __iomem *mem_ptr0 = NULL;
618 void __iomem *mem_ptr1 = NULL;
619 void __iomem *mem_ptr2 = NULL;
620 void __iomem *db_ptr = NULL;
621
97daee83
DP		 622 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
623
624 struct pci_dev *pdev = adapter->pdev;
625 int pci_func = adapter->ahw.pci_func;
626
627 int err = 0;
628
629 /*
630 * Set the CRB window to invalid. If any register in window 0 is
631 * accessed it should set the window to 0 and then reset it to 1.
632 */
633 adapter->curr_window = 255;
634 adapter->ahw.qdr_sn_window = -1;
635 adapter->ahw.ddr_mn_window = -1;
636
637 /* remap phys address */
638 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
639 mem_len = pci_resource_len(pdev, 0);
640 pci_len0 = 0;
641
642 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
643 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
644 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
645 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
97daee83
DP		 646 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
647 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
648 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
649
650 /* 128 Meg of memory */
651 if (mem_len == NETXEN_PCI_128MB_SIZE) {
652 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
653 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
654 SECOND_PAGE_GROUP_SIZE);
655 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
656 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 657 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
658 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
659 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
660 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 661 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
662 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
663 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
664 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
665 adapter->pci_write_immediate =
666 netxen_nic_pci_write_immediate_2M;
97daee83
DP		 667 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
668 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
669 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
670
671 mem_ptr0 = pci_ioremap_bar(pdev, 0);
672 if (mem_ptr0 == NULL) {
673 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
674 return -EIO;
675 }
676 pci_len0 = mem_len;
97daee83
DP		 677
678 adapter->ahw.ddr_mn_window = 0;
679 adapter->ahw.qdr_sn_window = 0;
680
681 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
682 (pci_func * 0x20);
683 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
684 if (pci_func < 4)
685 adapter->ahw.ms_win_crb += (pci_func * 0x20);
686 else
687 adapter->ahw.ms_win_crb +=
688 0xA0 + ((pci_func - 4) * 0x10);
689 } else {
690 return -EIO;
691 }
692
693 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
694
695 adapter->ahw.pci_base0 = mem_ptr0;
696 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 697 adapter->ahw.pci_base1 = mem_ptr1;
698 adapter->ahw.pci_base2 = mem_ptr2;
699
700 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
701 goto skip_doorbell;
702
703 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
704 db_len = pci_resource_len(pdev, 4);
705
706 if (db_len == 0) {
707 printk(KERN_ERR "%s: doorbell is disabled\n",
708 netxen_nic_driver_name);
709 err = -EIO;
710 goto err_out;
711 }
712
713 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
714 if (!db_ptr) {
715 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
716 netxen_nic_driver_name);
717 err = -EIO;
718 goto err_out;
719 }
720
721skip_doorbell:
722 adapter->ahw.db_base = db_ptr;
723 adapter->ahw.db_len = db_len;
724 return 0;
725
726err_out:
727 netxen_cleanup_pci_map(adapter);
728 return err;
729}
730
ba599d4f 731static int
f7185c71 732netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
ba599d4f
DP		 733{
734 int val, err, first_boot;
735 struct pci_dev *pdev = adapter->pdev;
736
0b72e659 737 int first_driver = 0;
f7185c71
DP		 738
739 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
740 first_driver = (adapter->portnum == 0);
741 else
742 first_driver = (adapter->ahw.pci_func == 0);
0b72e659
DP		 743
744 if (!first_driver)
96f2ebd2 745 goto wait_init;
0b72e659 746
f98a9f69 747 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 748
749 err = netxen_check_hw_init(adapter, first_boot);
750 if (err) {
751 dev_err(&pdev->dev, "error in init HW init sequence\n");
752 return err;
753 }
754
f7185c71
DP		 755 if (request_fw)
756 netxen_request_firmware(adapter);
757
67c38fc6 758 err = netxen_need_fw_reset(adapter);
1dbc84a7 759 if (err < 0)
67c38fc6 760 return err;
1dbc84a7
DP		 761 if (err == 0)
762 goto wait_init;
67c38fc6 763
ba599d4f 764 if (first_boot != 0x55555555) {
f98a9f69 765 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
ba599d4f
DP		 766 netxen_pinit_from_rom(adapter, 0);
767 msleep(1);
768 }
567c6c4e 769
f98a9f69 770 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 771 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
772 netxen_set_port_mode(adapter);
773
ba599d4f
DP		 774 netxen_load_firmware(adapter);
775
776 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
777
778 /* Initialize multicast addr pool owners */
779 val = 0x7654;
1e2d0059 780 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 781 val |= 0x0f000000;
f98a9f69 782 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 783
784 }
785
83ac51fa 786 err = netxen_init_dummy_dma(adapter);
ba599d4f
DP		 787 if (err)
788 return err;
789
790 /*
791 * Tell the hardware our version number.
792 */
793 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
794 | ((_NETXEN_NIC_LINUX_MINOR << 8))
795 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 796 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 797
96f2ebd2 798wait_init:
ba599d4f
DP		 799 /* Handshake with the card before we register the devices. */
800 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
801 if (err) {
83ac51fa 802 netxen_free_dummy_dma(adapter);
ba599d4f
DP		 803 return err;
804 }
805
68b3cae0
DP		 806 nx_update_dma_mask(adapter);
807
808 netxen_nic_get_firmware_info(adapter);
809
ba599d4f
DP		 810 return 0;
811}
812
9f5bc7f1
DP		 813static int
814netxen_nic_request_irq(struct netxen_adapter *adapter)
815{
816 irq_handler_t handler;
d8b100c5
DP		 817 struct nx_host_sds_ring *sds_ring;
818 int err, ring;
819
9f5bc7f1
DP		 820 unsigned long flags = IRQF_SAMPLE_RANDOM;
821 struct net_device *netdev = adapter->netdev;
d8b100c5 822 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 823
9f5bc7f1
DP		 824 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
825 handler = netxen_msix_intr;
826 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
827 handler = netxen_msi_intr;
828 else {
829 flags |= IRQF_SHARED;
830 handler = netxen_intr;
831 }
832 adapter->irq = netdev->irq;
833
d8b100c5
DP		 834 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
835 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 836 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 837 err = request_irq(sds_ring->irq, handler,
838 flags, sds_ring->name, sds_ring);
839 if (err)
840 return err;
841 }
842
843 return 0;
844}
845
846static void
847netxen_nic_free_irq(struct netxen_adapter *adapter)
848{
849 int ring;
850 struct nx_host_sds_ring *sds_ring;
851
852 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
853
854 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
855 sds_ring = &recv_ctx->sds_rings[ring];
856 free_irq(sds_ring->irq, sds_ring);
857 }
9f5bc7f1
DP		 858}
859
ca2ef330
DP		 860static void
861netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
862{
863 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
864 adapter->coal.normal.data.rx_time_us =
865 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
866 adapter->coal.normal.data.rx_packets =
867 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
868 adapter->coal.normal.data.tx_time_us =
869 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
870 adapter->coal.normal.data.tx_packets =
871 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
872}
873
9f5bc7f1
DP		 874static int
875netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
876{
877 int err;
878
879 err = adapter->init_port(adapter, adapter->physical_port);
880 if (err) {
881 printk(KERN_ERR "%s: Failed to initialize port %d\n",
882 netxen_nic_driver_name, adapter->portnum);
883 return err;
884 }
3d0a3cc9
DP		 885 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
886 adapter->macaddr_set(adapter, netdev->dev_addr);
9f5bc7f1 887
3d0a3cc9
DP		 888 adapter->set_multi(netdev);
889 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 890
891 adapter->ahw.linkup = 0;
9f5bc7f1 892
d8b100c5
DP		 893 if (adapter->max_sds_rings > 1)
894 netxen_config_rss(adapter, 1);
9f5bc7f1 895
ca2ef330
DP		 896 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
897 netxen_config_intr_coalesce(adapter);
898
1bb482f8
NK		 899 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
900 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
901
b2af9cb0
DP		 902 netxen_napi_enable(adapter);
903
5103c9f7 904 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 905 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 906 else
907 netxen_nic_set_link_parameters(adapter);
908
909 mod_timer(&adapter->watchdog_timer, jiffies);
3bf26ce3 910
9f5bc7f1
DP		 911 return 0;
912}
913
914static void
915netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
916{
b2af9cb0 917 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 918 netif_carrier_off(netdev);
b2af9cb0 919 netif_tx_disable(netdev);
9f5bc7f1
DP		 920
921 if (adapter->stop_port)
922 adapter->stop_port(adapter);
923
5cf4d323
DP		 924 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
925 netxen_p3_free_mac_list(adapter);
926
22b5794b
AKS		 927 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
928
be339aee
DP		 929 netxen_napi_disable(adapter);
930
9f5bc7f1 931 netxen_release_tx_buffers(adapter);
b2af9cb0 932 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1 933
9f5bc7f1
DP		 934 del_timer_sync(&adapter->watchdog_timer);
935}
936
937
938static int
939netxen_nic_attach(struct netxen_adapter *adapter)
940{
941 struct net_device *netdev = adapter->netdev;
942 struct pci_dev *pdev = adapter->pdev;
becf46a0 943 int err, ring;
d8b100c5 944 struct nx_host_rds_ring *rds_ring;
d877f1e3 945 struct nx_host_tx_ring *tx_ring;
9f5bc7f1 946
7042cd8f
AKS		 947 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
948 return 0;
949
9f5bc7f1 950 err = netxen_init_firmware(adapter);
232e7d68
DP		 951 if (err)
952 return err;
953
954 err = netxen_napi_add(adapter, netdev);
955 if (err)
956 return err;
9f5bc7f1 957
9f5bc7f1
DP		 958 err = netxen_alloc_sw_resources(adapter);
959 if (err) {
960 printk(KERN_ERR "%s: Error in setting sw resources\n",
961 netdev->name);
962 return err;
963 }
964
965 netxen_nic_clear_stats(adapter);
966
967 err = netxen_alloc_hw_resources(adapter);
968 if (err) {
969 printk(KERN_ERR "%s: Error in setting hw resources\n",
970 netdev->name);
971 goto err_out_free_sw;
972 }
973
4f96b988 974 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
4ea528a1 975 tx_ring = adapter->tx_ring;
d877f1e3
DP		 976 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
977 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
9f5bc7f1 978
cb2107be
DP		 979 tx_ring->producer = 0;
980 tx_ring->sw_consumer = 0;
981
982 netxen_nic_update_cmd_producer(adapter, tx_ring);
983 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 984 }
985
d8b100c5
DP		 986 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
987 rds_ring = &adapter->recv_ctx.rds_rings[ring];
988 netxen_post_rx_buffers(adapter, ring, rds_ring);
989 }
9f5bc7f1
DP		 990
991 err = netxen_nic_request_irq(adapter);
992 if (err) {
993 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
994 netdev->name);
995 goto err_out_free_rxbuf;
996 }
997
ca2ef330
DP		 998 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
999 netxen_nic_init_coalesce_defaults(adapter);
1000
fa3ce355
NK		 1001 netxen_create_sysfs_entries(adapter);
1002
9f5bc7f1
DP		 1003 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1004 return 0;
1005
1006err_out_free_rxbuf:
1007 netxen_release_rx_buffers(adapter);
1008 netxen_free_hw_resources(adapter);
1009err_out_free_sw:
1010 netxen_free_sw_resources(adapter);
1011 return err;
1012}
1013
1014static void
1015netxen_nic_detach(struct netxen_adapter *adapter)
1016{
7042cd8f
AKS		 1017 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1018 return;
1019
fa3ce355
NK		 1020 netxen_remove_sysfs_entries(adapter);
1021
9f5bc7f1 1022 netxen_free_hw_resources(adapter);
cf981ffb 1023 netxen_release_rx_buffers(adapter);
be339aee 1024 netxen_nic_free_irq(adapter);
232e7d68 1025 netxen_napi_del(adapter);
9f5bc7f1
DP		 1026 netxen_free_sw_resources(adapter);
1027
1028 adapter->is_up = 0;
1029}
1030
7042cd8f
AKS		 1031int
1032netxen_nic_reset_context(struct netxen_adapter *adapter)
1033{
1034 int err = 0;
1035 struct net_device *netdev = adapter->netdev;
1036
1037 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1038
1039 if (netif_running(netdev))
1040 netxen_nic_down(adapter, netdev);
1041
1042 netxen_nic_detach(adapter);
1043
1044 err = netxen_nic_attach(adapter);
1045 if (err)
1046 goto done;
1047
1048 if (netif_running(netdev))
1049 err = netxen_nic_up(adapter, netdev);
1050 }
1051done:
1052 return err;
1053}
1054
f17443f4
DP		 1055static int
1056netxen_setup_netdev(struct netxen_adapter *adapter,
1057 struct net_device *netdev)
1058{
1059 int err = 0;
1060 struct pci_dev *pdev = adapter->pdev;
1061
1062 adapter->rx_csum = 1;
1063 adapter->mc_enabled = 0;
1064 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1065 adapter->max_mc_count = 38;
1066 else
1067 adapter->max_mc_count = 16;
1068
1069 netdev->netdev_ops = &netxen_netdev_ops;
1070 netdev->watchdog_timeo = 2*HZ;
1071
1072 netxen_nic_change_mtu(netdev, netdev->mtu);
1073
1074 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1075
1076 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1077 netdev->features |= (NETIF_F_GRO);
1078 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1079
1080 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1081 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1082 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1083 }
1084
1085 if (adapter->pci_using_dac) {
1086 netdev->features |= NETIF_F_HIGHDMA;
1087 netdev->vlan_features |= NETIF_F_HIGHDMA;
1088 }
1089
028afe71
DP		 1090 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1091 netdev->features |= (NETIF_F_HW_VLAN_TX);
1092
1bb482f8
NK		 1093 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1094 netdev->features |= NETIF_F_LRO;
1095
f17443f4
DP		 1096 netdev->irq = adapter->msix_entries[0].vector;
1097
1098 err = netxen_napi_add(adapter, netdev);
1099 if (err)
1100 return err;
1101
1102 init_timer(&adapter->watchdog_timer);
1103 adapter->watchdog_timer.function = &netxen_watchdog;
1104 adapter->watchdog_timer.data = (unsigned long)adapter;
1105 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1106 INIT_WORK(&adapter->tx_timeout_task, netxen_reset_task);
1107
1108 if (netxen_read_mac_addr(adapter))
1109 dev_warn(&pdev->dev, "failed to read mac addr\n");
1110
1111 netif_carrier_off(netdev);
1112 netif_stop_queue(netdev);
1113
1114 err = register_netdev(netdev);
1115 if (err) {
1116 dev_err(&pdev->dev, "failed to register net device\n");
1117 return err;
1118 }
1119
1120 return 0;
1121}
1122
3d396eb1
AK		 1123static int __devinit
1124netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1125{
1126 struct net_device *netdev = NULL;
1127 struct netxen_adapter *adapter = NULL;
2956640d 1128 int i = 0, err;
3176ff3e 1129 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 1130 uint8_t revision_id;
3d396eb1 1131
3176ff3e 1132 if (pdev->class != 0x020000) {
dcd56fdb 1133 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 1134 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 1135 return -ENODEV;
1136 }
2956640d 1137
11d89d63
DP		 1138 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1139 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1140 "will not be enabled.\n",
1141 NX_P3_A0, NX_P3_B1);
1142 return -ENODEV;
1143 }
1144
3d396eb1
AK		 1145 if ((err = pci_enable_device(pdev)))
1146 return err;
2956640d 1147
3d396eb1
AK		 1148 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1149 err = -ENODEV;
1150 goto err_out_disable_pdev;
1151 }
1152
1153 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1154 goto err_out_disable_pdev;
1155
1156 pci_set_master(pdev);
3176ff3e
MT		 1157
1158 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1159 if(!netdev) {
f17443f4
DP		 1160 dev_err(&pdev->dev, "failed to allocate net_device\n");
1161 err = -ENOMEM;
3176ff3e
MT		 1162 goto err_out_free_res;
1163 }
1164
3176ff3e
MT		 1165 SET_NETDEV_DEV(netdev, &pdev->dev);
1166
4cf1653a 1167 adapter = netdev_priv(netdev);
2956640d
DP		 1168 adapter->netdev = netdev;
1169 adapter->pdev = pdev;
13ba9c77 1170 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1171
1172 revision_id = pdev->revision;
1173 adapter->ahw.revision_id = revision_id;
1174
50c643e7 1175 err = nx_set_dma_mask(adapter);
2956640d
DP		 1176 if (err)
1177 goto err_out_free_netdev;
1178
3ce06a32 1179 rwlock_init(&adapter->adapter_lock);
d8b100c5 1180 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1181 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1182
97daee83
DP		 1183 err = netxen_setup_pci_map(adapter);
1184 if (err)
6c80b18d 1185 goto err_out_free_netdev;
3d396eb1 1186
2d1a3bbd 1187 /* This will be reset for mezz cards */
3176ff3e 1188 adapter->portnum = pci_func_id;
3176ff3e 1189
f17443f4
DP		 1190 err = netxen_nic_get_board_info(adapter);
1191 if (err) {
1192 dev_err(&pdev->dev, "Error getting board config info.\n");
dcd56fdb
DP		 1193 goto err_out_iounmap;
1194 }
6c80b18d 1195
6c80b18d
MT		 1196 netxen_initialize_adapter_ops(adapter);
1197
13ba9c77 1198 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1199 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1200 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1201 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1202 if (pci_func_id >= 2)
13ba9c77 1203 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1204 break;
1205 default:
1206 break;
1207 }
13ba9c77 1208
f7185c71 1209 err = netxen_start_firmware(adapter, 1);
0b72e659
DP		 1210 if (err)
1211 goto err_out_iounmap;
f17443f4 1212
3d396eb1 1213 /*
6c80b18d 1214 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1215 */
dcd56fdb 1216 adapter->physical_port = adapter->portnum;
4f96b988 1217 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
f98a9f69 1218 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1219 if (i != 0x55555555)
1220 adapter->physical_port = i;
1221 }
6c80b18d 1222
438627c7 1223 netxen_check_options(adapter);
2956640d 1224
97daee83 1225 netxen_setup_intr(adapter);
2956640d 1226
f17443f4 1227 err = netxen_setup_netdev(adapter, netdev);
9dc28efe 1228 if (err)
2956640d 1229 goto err_out_disable_msi;
6c80b18d
MT		 1230
1231 pci_set_drvdata(pdev, adapter);
3d396eb1 1232
1e2d0059 1233 switch (adapter->ahw.port_type) {
2956640d
DP		 1234 case NETXEN_NIC_GBE:
1235 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1236 adapter->netdev->name);
1237 break;
1238 case NETXEN_NIC_XGBE:
1239 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1240 adapter->netdev->name);
1241 break;
3d396eb1 1242 }
3d396eb1 1243
2956640d
DP		 1244 return 0;
1245
1246err_out_disable_msi:
97daee83 1247 netxen_teardown_intr(adapter);
6c80b18d 1248
83ac51fa 1249 netxen_free_dummy_dma(adapter);
3d396eb1 1250
2956640d 1251err_out_iounmap:
97daee83 1252 netxen_cleanup_pci_map(adapter);
cb8011ad 1253
6c80b18d
MT		 1254err_out_free_netdev:
1255 free_netdev(netdev);
1256
1257err_out_free_res:
3d396eb1 1258 pci_release_regions(pdev);
6c80b18d
MT		 1259
1260err_out_disable_pdev:
2956640d 1261 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1262 pci_disable_device(pdev);
1263 return err;
1264}
1265
1266static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1267{
1268 struct netxen_adapter *adapter;
3176ff3e 1269 struct net_device *netdev;
3d396eb1 1270
6c80b18d 1271 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1272 if (adapter == NULL)
1273 return;
1274
6c80b18d
MT		 1275 netdev = adapter->netdev;
1276
96acb6eb
DP		 1277 unregister_netdev(netdev);
1278
e424fa9d
AKS		 1279 cancel_work_sync(&adapter->watchdog_task);
1280 cancel_work_sync(&adapter->tx_timeout_task);
1281
7042cd8f 1282 netxen_nic_detach(adapter);
3d396eb1 1283
439b454e 1284 if (adapter->portnum == 0)
83ac51fa 1285 netxen_free_dummy_dma(adapter);
96acb6eb 1286
97daee83 1287 netxen_teardown_intr(adapter);
3052246c 1288
97daee83 1289 netxen_cleanup_pci_map(adapter);
595e3fb8 1290
f7185c71
DP		 1291 netxen_release_firmware(adapter);
1292
595e3fb8 1293 pci_release_regions(pdev);
3052246c 1294 pci_disable_device(pdev);
595e3fb8
MT		 1295 pci_set_drvdata(pdev, NULL);
1296
6c80b18d 1297 free_netdev(netdev);
3d396eb1 1298}
22b5794b 1299static int __netxen_nic_shutdown(struct pci_dev *pdev)
0b72e659 1300{
0b72e659
DP		 1301 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1302 struct net_device *netdev = adapter->netdev;
22b5794b 1303 int retval;
0b72e659
DP		 1304
1305 netif_device_detach(netdev);
1306
1307 if (netif_running(netdev))
1308 netxen_nic_down(adapter, netdev);
1309
e424fa9d
AKS		 1310 cancel_work_sync(&adapter->watchdog_task);
1311 cancel_work_sync(&adapter->tx_timeout_task);
1312
7042cd8f 1313 netxen_nic_detach(adapter);
0b72e659 1314
22b5794b
AKS		 1315 if (adapter->portnum == 0)
1316 netxen_free_dummy_dma(adapter);
1317
1318 retval = pci_save_state(pdev);
1319 if (retval)
1320 return retval;
0b72e659
DP		 1321
1322 if (netxen_nic_wol_supported(adapter)) {
1323 pci_enable_wake(pdev, PCI_D3cold, 1);
1324 pci_enable_wake(pdev, PCI_D3hot, 1);
1325 }
1326
1327 pci_disable_device(pdev);
0b72e659
DP		 1328
1329 return 0;
1330}
22b5794b
AKS		 1331static void netxen_nic_shutdown(struct pci_dev *pdev)
1332{
1333 if (__netxen_nic_shutdown(pdev))
1334 return;
1335}
1336#ifdef CONFIG_PM
1337static int
1338netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1339{
1340 int retval;
1341
1342 retval = __netxen_nic_shutdown(pdev);
1343 if (retval)
1344 return retval;
1345
1346 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1347 return 0;
1348}
0b72e659
DP		 1349
1350static int
1351netxen_nic_resume(struct pci_dev *pdev)
1352{
1353 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1354 struct net_device *netdev = adapter->netdev;
1355 int err;
1356
1357 pci_set_power_state(pdev, PCI_D0);
1358 pci_restore_state(pdev);
1359
1360 err = pci_enable_device(pdev);
1361 if (err)
1362 return err;
1363
1364 adapter->curr_window = 255;
1365
f7185c71 1366 err = netxen_start_firmware(adapter, 0);
0b72e659
DP		 1367 if (err) {
1368 dev_err(&pdev->dev, "failed to start firmware\n");
1369 return err;
1370 }
1371
1372 if (netif_running(netdev)) {
1373 err = netxen_nic_attach(adapter);
1374 if (err)
1375 return err;
1376
1377 err = netxen_nic_up(adapter, netdev);
1378 if (err)
1379 return err;
1380
1381 netif_device_attach(netdev);
1382 }
1383
1384 return 0;
1385}
01542cd1 1386#endif
0b72e659 1387
3d396eb1
AK		 1388static int netxen_nic_open(struct net_device *netdev)
1389{
4cf1653a 1390 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1391 int err = 0;
3d396eb1 1392
dcd56fdb
DP		 1393 if (adapter->driver_mismatch)
1394 return -EIO;
1395
7042cd8f
AKS		 1396 err = netxen_nic_attach(adapter);
1397 if (err)
1398 return err;
2956640d 1399
9f5bc7f1
DP		 1400 err = netxen_nic_up(adapter, netdev);
1401 if (err)
1402 goto err_out;
05aaa02d 1403
dcd56fdb 1404 netif_start_queue(netdev);
3d396eb1
AK		 1405
1406 return 0;
2956640d 1407
9f5bc7f1
DP		 1408err_out:
1409 netxen_nic_detach(adapter);
2956640d 1410 return err;
3d396eb1
AK		 1411}
1412
1413/*
1414 * netxen_nic_close - Disables a network interface entry point
1415 */
1416static int netxen_nic_close(struct net_device *netdev)
1417{
3176ff3e 1418 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1419
9f5bc7f1 1420 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1421 return 0;
1422}
1423
1bcfd790
DP		 1424static void
1425netxen_tso_check(struct net_device *netdev,
1426 struct nx_host_tx_ring *tx_ring,
1427 struct cmd_desc_type0 *first_desc,
1428 struct sk_buff *skb)
cd1f8160 1429{
391587c3 1430 u8 opcode = TX_ETHER_PKT;
cdff1036 1431 __be16 protocol = skb->protocol;
028afe71 1432 u16 flags = 0, vid = 0;
1bcfd790 1433 u32 producer;
028afe71 1434 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1bcfd790 1435 struct cmd_desc_type0 *hwdesc;
028afe71 1436 struct vlan_ethhdr *vh;
cdff1036 1437
09640e63 1438 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
028afe71
DP		 1439
1440 vh = (struct vlan_ethhdr *)skb->data;
cdff1036
DP		 1441 protocol = vh->h_vlan_encapsulated_proto;
1442 flags = FLAGS_VLAN_TAGGED;
028afe71
DP		 1443
1444 } else if (vlan_tx_tag_present(skb)) {
1445
1446 flags = FLAGS_VLAN_OOB;
1447 vid = vlan_tx_tag_get(skb);
1448 netxen_set_tx_vlan_tci(first_desc, vid);
1449 vlan_oob = 1;
cdff1036 1450 }
cd1f8160 1451
391587c3
DP		 1452 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1453 skb_shinfo(skb)->gso_size > 0) {
1454
1bcfd790
DP		 1455 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1456
1457 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1458 first_desc->total_hdr_length = hdr_len;
028afe71
DP		 1459 if (vlan_oob) {
1460 first_desc->total_hdr_length += VLAN_HLEN;
1461 first_desc->tcp_hdr_offset = VLAN_HLEN;
1462 first_desc->ip_hdr_offset = VLAN_HLEN;
1463 /* Only in case of TSO on vlan device */
1464 flags |= FLAGS_VLAN_TAGGED;
1465 }
391587c3 1466
09640e63 1467 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3 1468 TX_TCP_LSO6 : TX_TCP_LSO;
1bcfd790 1469 tso = 1;
cd1f8160
DP		 1470
1471 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1472 u8 l4proto;
1473
09640e63 1474 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1475 l4proto = ip_hdr(skb)->protocol;
1476
1477 if (l4proto == IPPROTO_TCP)
1478 opcode = TX_TCP_PKT;
1479 else if(l4proto == IPPROTO_UDP)
1480 opcode = TX_UDP_PKT;
09640e63 1481 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1482 l4proto = ipv6_hdr(skb)->nexthdr;
1483
1484 if (l4proto == IPPROTO_TCP)
1485 opcode = TX_TCPV6_PKT;
1486 else if(l4proto == IPPROTO_UDP)
1487 opcode = TX_UDPV6_PKT;
1488 }
cd1f8160 1489 }
028afe71
DP		 1490
1491 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1492 first_desc->ip_hdr_offset += skb_network_offset(skb);
1bcfd790
DP		 1493 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1494
1495 if (!tso)
1496 return;
1497
1498 /* For LSO, we need to copy the MAC/IP/TCP headers into
1499 * the descriptor ring
1500 */
1501 producer = tx_ring->producer;
1502 copied = 0;
1503 offset = 2;
1504
028afe71
DP		 1505 if (vlan_oob) {
1506 /* Create a TSO vlan header template for firmware */
1507
1508 hwdesc = &tx_ring->desc_head[producer];
1509 tx_ring->cmd_buf_arr[producer].skb = NULL;
1510
1511 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1512 hdr_len + VLAN_HLEN);
1513
1514 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1515 skb_copy_from_linear_data(skb, vh, 12);
1516 vh->h_vlan_proto = htons(ETH_P_8021Q);
1517 vh->h_vlan_TCI = htons(vid);
1518 skb_copy_from_linear_data_offset(skb, 12,
1519 (char *)vh + 16, copy_len - 16);
1520
545eb370 1521 copied = copy_len - VLAN_HLEN;
028afe71
DP		 1522 offset = 0;
1523
1524 producer = get_next_index(producer, tx_ring->num_desc);
1525 }
1526
1bcfd790
DP		 1527 while (copied < hdr_len) {
1528
1529 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1530 (hdr_len - copied));
1531
1532 hwdesc = &tx_ring->desc_head[producer];
1533 tx_ring->cmd_buf_arr[producer].skb = NULL;
1534
1535 skb_copy_from_linear_data_offset(skb, copied,
1536 (char *)hwdesc + offset, copy_len);
1537
1538 copied += copy_len;
1539 offset = 0;
1540
1541 producer = get_next_index(producer, tx_ring->num_desc);
1542 }
1543
1544 tx_ring->producer = producer;
1545 barrier();
cd1f8160
DP		 1546}
1547
ce644ed4
DP		 1548static int
1549netxen_map_tx_skb(struct pci_dev *pdev,
1550 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
6f703406 1551{
ce644ed4
DP		 1552 struct netxen_skb_frag *nf;
1553 struct skb_frag_struct *frag;
1554 int i, nr_frags;
1555 dma_addr_t map;
1556
1557 nr_frags = skb_shinfo(skb)->nr_frags;
1558 nf = &pbuf->frag_array[0];
1559
1560 map = pci_map_single(pdev, skb->data,
1561 skb_headlen(skb), PCI_DMA_TODEVICE);
1562 if (pci_dma_mapping_error(pdev, map))
1563 goto out_err;
6f703406 1564
ce644ed4
DP		 1565 nf->dma = map;
1566 nf->length = skb_headlen(skb);
1567
1568 for (i = 0; i < nr_frags; i++) {
1569 frag = &skb_shinfo(skb)->frags[i];
1570 nf = &pbuf->frag_array[i+1];
1571
1572 map = pci_map_page(pdev, frag->page, frag->page_offset,
1573 frag->size, PCI_DMA_TODEVICE);
1574 if (pci_dma_mapping_error(pdev, map))
1575 goto unwind;
1576
1577 nf->dma = map;
1578 nf->length = frag->size;
1579 }
1580
1581 return 0;
6f703406 1582
ce644ed4
DP		 1583unwind:
1584 while (i > 0) {
1585 nf = &pbuf->frag_array[i];
1586 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
6f703406 1587 }
ce644ed4
DP		 1588
1589 nf = &pbuf->frag_array[0];
1590 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1591
1592out_err:
1593 return -ENOMEM;
6f703406
DP		 1594}
1595
d32cc3d2
DP		 1596static inline void
1597netxen_clear_cmddesc(u64 *desc)
1598{
1bcfd790
DP		 1599 desc[0] = 0ULL;
1600 desc[2] = 0ULL;
d32cc3d2
DP		 1601}
1602
61357325 1603static netdev_tx_t
d32cc3d2 1604netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1605{
3176ff3e 1606 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1607 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
391587c3 1608 struct netxen_cmd_buffer *pbuf;
3d396eb1 1609 struct netxen_skb_frag *buffrag;
1bcfd790
DP		 1610 struct cmd_desc_type0 *hwdesc, *first_desc;
1611 struct pci_dev *pdev;
391587c3 1612 int i, k;
3d396eb1 1613
cb2107be 1614 u32 producer;
ce644ed4 1615 int frag_count, no_of_desc;
d877f1e3 1616 u32 num_txd = tx_ring->num_desc;
3d396eb1 1617
3d396eb1
AK		 1618 frag_count = skb_shinfo(skb)->nr_frags + 1;
1619
d877f1e3 1620 /* 4 fragments per cmd des */
3d396eb1 1621 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1622
cb2107be 1623 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
ba53e6b4 1624 netif_stop_queue(netdev);
ba53e6b4 1625 return NETDEV_TX_BUSY;
53a01e00 1626 }
3d396eb1 1627
cb2107be 1628 producer = tx_ring->producer;
ce644ed4 1629 pbuf = &tx_ring->cmd_buf_arr[producer];
cb2107be 1630
1bcfd790 1631 pdev = adapter->pdev;
391587c3 1632
ce644ed4 1633 if (netxen_map_tx_skb(pdev, skb, pbuf))
1bcfd790 1634 goto drop_packet;
391587c3 1635
3d396eb1 1636 pbuf->skb = skb;
3d396eb1 1637 pbuf->frag_count = frag_count;
6f703406 1638
1bcfd790
DP		 1639 first_desc = hwdesc = &tx_ring->desc_head[producer];
1640 netxen_clear_cmddesc((u64 *)hwdesc);
3d396eb1 1641
ce644ed4
DP		 1642 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1643 netxen_set_tx_port(first_desc, adapter->portnum);
3d396eb1 1644
ce644ed4 1645 for (i = 0; i < frag_count; i++) {
3d396eb1 1646
ce644ed4
DP		 1647 k = i % 4;
1648
1649 if ((k == 0) && (i > 0)) {
1650 /* move to next desc.*/
ba53e6b4 1651 producer = get_next_index(producer, num_txd);
d877f1e3 1652 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1653 netxen_clear_cmddesc((u64 *)hwdesc);
ce644ed4 1654 tx_ring->cmd_buf_arr[producer].skb = NULL;
6f703406 1655 }
3d396eb1 1656
ce644ed4 1657 buffrag = &pbuf->frag_array[i];
3d396eb1 1658
ce644ed4 1659 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
3d396eb1
AK		 1660 switch (k) {
1661 case 0:
ce644ed4 1662 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1663 break;
1664 case 1:
ce644ed4 1665 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1666 break;
1667 case 2:
ce644ed4 1668 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1669 break;
1670 case 3:
ce644ed4 1671 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1672 break;
1673 }
3d396eb1 1674 }
ce644ed4 1675
1bcfd790 1676 tx_ring->producer = get_next_index(producer, num_txd);
3d396eb1 1677
1bcfd790 1678 netxen_tso_check(netdev, tx_ring, first_desc, skb);
6c80b18d 1679
cb2107be 1680 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1681
1bcfd790 1682 adapter->stats.txbytes += skb->len;
ba53e6b4 1683 adapter->stats.xmitcalled++;
3d396eb1 1684
3d396eb1 1685 return NETDEV_TX_OK;
6f703406
DP		 1686
1687drop_packet:
1688 adapter->stats.txdropped++;
1689 dev_kfree_skb_any(skb);
1690 return NETDEV_TX_OK;
3d396eb1
AK		 1691}
1692
a97342f9
DP		 1693static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1694{
1695 struct net_device *netdev = adapter->netdev;
1696 uint32_t temp, temp_state, temp_val;
1697 int rv = 0;
1698
f98a9f69 1699 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1700
1701 temp_state = nx_get_temp_state(temp);
1702 temp_val = nx_get_temp_val(temp);
1703
1704 if (temp_state == NX_TEMP_PANIC) {
1705 printk(KERN_ALERT
1706 "%s: Device temperature %d degrees C exceeds"
1707 " maximum allowed. Hardware has been shut down.\n",
e4135c2d 1708 netdev->name, temp_val);
a97342f9
DP		 1709 rv = 1;
1710 } else if (temp_state == NX_TEMP_WARN) {
1711 if (adapter->temp == NX_TEMP_NORMAL) {
1712 printk(KERN_ALERT
1713 "%s: Device temperature %d degrees C "
1714 "exceeds operating range."
1715 " Immediate action needed.\n",
e4135c2d 1716 netdev->name, temp_val);
a97342f9
DP		 1717 }
1718 } else {
1719 if (adapter->temp == NX_TEMP_WARN) {
1720 printk(KERN_INFO
1721 "%s: Device temperature is now %d degrees C"
e4135c2d 1722 " in normal range.\n", netdev->name,
a97342f9
DP		 1723 temp_val);
1724 }
1725 }
1726 adapter->temp = temp_state;
1727 return rv;
1728}
1729
3bf26ce3 1730void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1731{
1732 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1733
1734 if (adapter->ahw.linkup && !linkup) {
1735 printk(KERN_INFO "%s: %s NIC Link is down\n",
1736 netxen_nic_driver_name, netdev->name);
1737 adapter->ahw.linkup = 0;
1738 if (netif_running(netdev)) {
1739 netif_carrier_off(netdev);
1740 netif_stop_queue(netdev);
1741 }
e424fa9d 1742 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1743 } else if (!adapter->ahw.linkup && linkup) {
1744 printk(KERN_INFO "%s: %s NIC Link is up\n",
1745 netxen_nic_driver_name, netdev->name);
1746 adapter->ahw.linkup = 1;
1747 if (netif_running(netdev)) {
1748 netif_carrier_on(netdev);
1749 netif_wake_queue(netdev);
1750 }
e424fa9d 1751 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1752 }
1753}
1754
3bf26ce3
DP		 1755static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1756{
1757 u32 val, port, linkup;
1758
1759 port = adapter->physical_port;
1760
1761 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1762 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1763 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1764 linkup = (val == XG_LINK_UP_P3);
1765 } else {
f98a9f69 1766 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1767 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1768 linkup = (val >> port) & 1;
1769 else {
1770 val = (val >> port*8) & 0xff;
1771 linkup = (val == XG_LINK_UP);
1772 }
1773 }
1774
1775 netxen_advert_link_change(adapter, linkup);
1776}
1777
e424fa9d
AKS		 1778static void netxen_nic_thermal_shutdown(struct netxen_adapter *adapter)
1779{
1780 struct net_device *netdev = adapter->netdev;
1781
1782 netif_device_detach(netdev);
1783 netxen_nic_down(adapter, netdev);
1784 netxen_nic_detach(adapter);
1785}
1786
3d396eb1
AK		 1787static void netxen_watchdog(unsigned long v)
1788{
1789 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1 1790
e424fa9d
AKS		 1791 if (netxen_nic_check_temp(adapter))
1792 goto do_sched;
1793
1794 if (!adapter->has_link_events) {
1795 netxen_nic_handle_phy_intr(adapter);
1796
1797 if (adapter->link_changed)
1798 goto do_sched;
1799 }
1800
1801 if (netif_running(adapter->netdev))
1802 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1803
1804 return;
1805
1806do_sched:
1807 schedule_work(&adapter->watchdog_task);
3d396eb1
AK		 1808}
1809
a97342f9
DP		 1810void netxen_watchdog_task(struct work_struct *work)
1811{
1812 struct netxen_adapter *adapter =
1813 container_of(work, struct netxen_adapter, watchdog_task);
1814
e424fa9d
AKS		 1815 if (adapter->temp == NX_TEMP_PANIC) {
1816 netxen_nic_thermal_shutdown(adapter);
a97342f9 1817 return;
e424fa9d 1818 }
a97342f9 1819
e424fa9d
AKS		 1820 if (adapter->link_changed)
1821 netxen_nic_set_link_parameters(adapter);
a97342f9 1822
922c4f2c
DP		 1823 if (netif_running(adapter->netdev))
1824 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1825}
1826
3d396eb1
AK		 1827static void netxen_tx_timeout(struct net_device *netdev)
1828{
e424fa9d 1829 struct netxen_adapter *adapter = netdev_priv(netdev);
f17443f4
DP		 1830
1831 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
e424fa9d 1832 schedule_work(&adapter->tx_timeout_task);
3d396eb1
AK		 1833}
1834
f17443f4 1835static void netxen_reset_task(struct work_struct *work)
3d396eb1 1836{
4790654c 1837 struct netxen_adapter *adapter =
3176ff3e 1838 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1839
b2af9cb0
DP		 1840 if (!netif_running(adapter->netdev))
1841 return;
1842
d8b100c5 1843 netxen_napi_disable(adapter);
ba53e6b4 1844
6c80b18d 1845 adapter->netdev->trans_start = jiffies;
ba53e6b4 1846
d8b100c5 1847 netxen_napi_enable(adapter);
6c80b18d 1848 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1849}
1850
a97342f9
DP		 1851struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1852{
1853 struct netxen_adapter *adapter = netdev_priv(netdev);
1854 struct net_device_stats *stats = &adapter->net_stats;
1855
1856 memset(stats, 0, sizeof(*stats));
1857
1bb482f8 1858 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
e98e3350 1859 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1860 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1861 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1862 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1863 stats->tx_dropped = adapter->stats.txdropped;
1864
1865 return stats;
1866}
1867
e4c93c81 1868static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1869{
d8b100c5
DP		 1870 struct nx_host_sds_ring *sds_ring = data;
1871 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1872 u32 status = 0;
1873
1874 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1875
1876 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1877 return IRQ_NONE;
e01872af 1878
d71e1be8
DP		 1879 if (adapter->ahw.revision_id >= NX_P3_B1) {
1880 /* check interrupt state machine, to be sure */
1881 status = adapter->pci_read_immediate(adapter,
1882 ISR_INT_STATE_REG);
1883 if (!ISR_LEGACY_INT_TRIGGERED(status))
1884 return IRQ_NONE;
1885
092bc571
DP		 1886 } else {
1887 unsigned long our_int = 0;
d71e1be8 1888
f98a9f69 1889 our_int = NXRD32(adapter, CRB_INT_VECTOR);
092bc571 1890
d71e1be8 1891 /* not our interrupt */
092bc571 1892 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1893 return IRQ_NONE;
1894
092bc571 1895 /* claim interrupt */
f98a9f69 1896 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1897 }
1898
092bc571 1899 /* clear interrupt */
4f96b988 1900 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
d8b100c5 1901 netxen_nic_disable_int(sds_ring);
092bc571
DP		 1902
1903 adapter->pci_write_immediate(adapter,
1904 adapter->legacy_intr.tgt_status_reg,
1905 0xffffffff);
1906 /* read twice to ensure write is flushed */
1907 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1908 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1909
d8b100c5 1910 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1911
1912 return IRQ_HANDLED;
1913}
1914
e4c93c81 1915static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1916{
d8b100c5
DP		 1917 struct nx_host_sds_ring *sds_ring = data;
1918 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1919
092bc571
DP		 1920 /* clear interrupt */
1921 adapter->pci_write_immediate(adapter,
7a2469ce 1922 adapter->msi_tgt_status, 0xffffffff);
092bc571 1923
d8b100c5 1924 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1925 return IRQ_HANDLED;
1926}
1927
b3df68f8
DP		 1928static irqreturn_t netxen_msix_intr(int irq, void *data)
1929{
d8b100c5 1930 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1931
d8b100c5 1932 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1933 return IRQ_HANDLED;
1934}
1935
bea3348e 1936static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1937{
d8b100c5
DP		 1938 struct nx_host_sds_ring *sds_ring =
1939 container_of(napi, struct nx_host_sds_ring, napi);
1940
1941 struct netxen_adapter *adapter = sds_ring->adapter;
1942
05aaa02d 1943 int tx_complete;
bea3348e 1944 int work_done;
3d396eb1 1945
05aaa02d 1946 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1947
d8b100c5 1948 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 1949
05aaa02d 1950 if ((work_done < budget) && tx_complete) {
d8b100c5 1951 napi_complete(&sds_ring->napi);
b2af9cb0
DP		 1952 if (netif_running(adapter->netdev))
1953 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 1954 }
1955
bea3348e 1956 return work_done;
3d396eb1
AK		 1957}
1958
1959#ifdef CONFIG_NET_POLL_CONTROLLER
1960static void netxen_nic_poll_controller(struct net_device *netdev)
1961{
3176ff3e 1962 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1963 disable_irq(adapter->irq);
1494a814 1964 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1965 enable_irq(adapter->irq);
1966}
1967#endif
3d396eb1 1968
fa3ce355
NK		 1969static ssize_t
1970netxen_store_bridged_mode(struct device *dev,
1971 struct device_attribute *attr, const char *buf, size_t len)
1972{
1973 struct net_device *net = to_net_dev(dev);
1974 struct netxen_adapter *adapter = netdev_priv(net);
1975 unsigned long new;
1976 int ret = -EINVAL;
1977
1978 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
1979 goto err_out;
1980
1981 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1982 goto err_out;
1983
1984 if (strict_strtoul(buf, 2, &new))
1985 goto err_out;
1986
1987 if (!netxen_config_bridged_mode(adapter, !!new))
1988 ret = len;
1989
1990err_out:
1991 return ret;
1992}
1993
1994static ssize_t
1995netxen_show_bridged_mode(struct device *dev,
1996 struct device_attribute *attr, char *buf)
1997{
1998 struct net_device *net = to_net_dev(dev);
1999 struct netxen_adapter *adapter;
2000 int bridged_mode = 0;
2001
2002 adapter = netdev_priv(net);
2003
2004 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2005 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2006
2007 return sprintf(buf, "%d\n", bridged_mode);
2008}
2009
2010static struct device_attribute dev_attr_bridged_mode = {
2011 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2012 .show = netxen_show_bridged_mode,
2013 .store = netxen_store_bridged_mode,
2014};
2015
2016static void
2017netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2018{
2019 struct net_device *netdev = adapter->netdev;
2020 struct device *dev = &netdev->dev;
2021
2022 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2023 /* bridged_mode control */
2024 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2025 dev_warn(&netdev->dev,
2026 "failed to create bridged_mode sysfs entry\n");
2027 }
2028 }
2029}
2030
2031static void
2032netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2033{
2034 struct net_device *netdev = adapter->netdev;
2035 struct device *dev = &netdev->dev;
2036
2037 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2038 device_remove_file(dev, &dev_attr_bridged_mode);
2039}
2040
2041static void netxen_watchdog(unsigned long);
2042
044824d9
DP		 2043#ifdef CONFIG_INET
2044
6598b169
DP		 2045#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2046
2047static int
2048netxen_destip_supported(struct netxen_adapter *adapter)
2049{
2050 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2051 return 0;
2052
2053 if (adapter->ahw.cut_through)
2054 return 0;
2055
2056 return 1;
2057}
2058
2059static int netxen_netdev_event(struct notifier_block *this,
2060 unsigned long event, void *ptr)
2061{
2062 struct netxen_adapter *adapter;
2063 struct net_device *dev = (struct net_device *)ptr;
2064 struct in_device *indev;
2065
2066recheck:
2067 if (dev == NULL)
2068 goto done;
2069
2070 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2071 dev = vlan_dev_real_dev(dev);
2072 goto recheck;
2073 }
2074
2075 if (!is_netxen_netdev(dev))
2076 goto done;
2077
2078 adapter = netdev_priv(dev);
2079
2080 if (!adapter || !netxen_destip_supported(adapter))
2081 goto done;
2082
2083 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2084 goto done;
2085
2086 indev = in_dev_get(dev);
2087 if (!indev)
2088 goto done;
2089
2090 for_ifa(indev) {
2091 switch (event) {
2092 case NETDEV_UP:
2093 netxen_config_ipaddr(adapter,
2094 ifa->ifa_address, NX_IP_UP);
2095 break;
2096 case NETDEV_DOWN:
2097 netxen_config_ipaddr(adapter,
2098 ifa->ifa_address, NX_IP_DOWN);
2099 break;
2100 default:
2101 break;
2102 }
2103 } endfor_ifa(indev);
2104
2105 in_dev_put(indev);
2106done:
2107 return NOTIFY_DONE;
2108}
2109
2110static int
2111netxen_inetaddr_event(struct notifier_block *this,
2112 unsigned long event, void *ptr)
2113{
2114 struct netxen_adapter *adapter;
2115 struct net_device *dev;
2116
2117 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2118
2119 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2120
2121recheck:
2122 if (dev == NULL || !netif_running(dev))
2123 goto done;
2124
2125 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2126 dev = vlan_dev_real_dev(dev);
2127 goto recheck;
2128 }
2129
2130 if (!is_netxen_netdev(dev))
2131 goto done;
2132
2133 adapter = netdev_priv(dev);
2134
2135 if (!adapter || !netxen_destip_supported(adapter))
2136 goto done;
2137
2138 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2139 goto done;
2140
2141 switch (event) {
2142 case NETDEV_UP:
2143 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2144 break;
2145 case NETDEV_DOWN:
2146 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2147 break;
2148 default:
2149 break;
2150 }
2151
2152done:
2153 return NOTIFY_DONE;
2154}
2155
2156static struct notifier_block netxen_netdev_cb = {
2157 .notifier_call = netxen_netdev_event,
2158};
2159
2160static struct notifier_block netxen_inetaddr_cb = {
2161 .notifier_call = netxen_inetaddr_event,
2162};
044824d9 2163#endif
6598b169 2164
3d396eb1
AK		 2165static struct pci_driver netxen_driver = {
2166 .name = netxen_nic_driver_name,
2167 .id_table = netxen_pci_tbl,
2168 .probe = netxen_nic_probe,
0b72e659 2169 .remove = __devexit_p(netxen_nic_remove),
01542cd1 2170#ifdef CONFIG_PM
0b72e659 2171 .suspend = netxen_nic_suspend,
22b5794b 2172 .resume = netxen_nic_resume,
01542cd1 2173#endif
22b5794b 2174 .shutdown = netxen_nic_shutdown
3d396eb1
AK		 2175};
2176
3d396eb1
AK		 2177static int __init netxen_init_module(void)
2178{
ff4fbd43
DP		 2179 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2180
044824d9 2181#ifdef CONFIG_INET
6598b169
DP		 2182 register_netdevice_notifier(&netxen_netdev_cb);
2183 register_inetaddr_notifier(&netxen_inetaddr_cb);
044824d9 2184#endif
6598b169 2185
184231bd 2186 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 2187}
2188
2189module_init(netxen_init_module);
2190
2191static void __exit netxen_exit_module(void)
2192{
3d396eb1 2193 pci_unregister_driver(&netxen_driver);
6598b169 2194
044824d9 2195#ifdef CONFIG_INET
6598b169
DP		 2196 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2197 unregister_netdevice_notifier(&netxen_netdev_cb);
044824d9 2198#endif
3d396eb1
AK		 2199}
2200
2201module_exit(netxen_exit_module);
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