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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[deliverable/linux.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#include "netxen_nic_phan_reg.h"
3d396eb1 37
1494a814 38#include <linux/dma-mapping.h>
391587c3 39#include <linux/if_vlan.h>
c9bdd4b5 40#include <net/ip.h>
00977784 41#include <linux/ipv6.h>
6598b169 42#include <linux/inetdevice.h>
1494a814 43
3d396eb1
AK		 44MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
45MODULE_LICENSE("GPL");
46MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
47
ceded32f 48char netxen_nic_driver_name[] = "netxen_nic";
3d396eb1 49static char netxen_nic_driver_string[] = "NetXen Network Driver version "
cb8011ad 50 NETXEN_NIC_LINUX_VERSIONID;
3d396eb1 51
2956640d
DP		 52static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
53
54/* Default to restricted 1G auto-neg mode */
55static int wol_port_mode = 5;
56
57static int use_msi = 1;
58
59static int use_msi_x = 1;
60
3d396eb1
AK		 61/* Local functions to NetXen NIC driver */
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);
67static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
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
1494a814 75static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 76static irqreturn_t netxen_msi_intr(int irq, void *data);
b3df68f8 77static irqreturn_t netxen_msix_intr(int irq, void *data);
3d396eb1
AK		 78
79/* PCI Device ID Table */
70081ac5 80#define ENTRY(device) \
040dec3b 81 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 82 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
83
3d396eb1 84static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 85 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
86 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
87 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
88 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
91 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
92 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 93 {0,}
94};
95
96MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
97
ed25ffa1
AK		 98static void netxen_watchdog(unsigned long);
99
7830b22c
DP		 100static uint32_t crb_cmd_producer[4] = {
101 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
102 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
103};
104
c9fc891f 105void
3ce06a32 106netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
cb2107be 107 struct nx_host_tx_ring *tx_ring)
3176ff3e 108{
cb2107be
DP		 109 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
110
111 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
112 netif_stop_queue(adapter->netdev);
113 smp_mb();
114 }
3176ff3e
MT		 115}
116
7830b22c
DP		 117static uint32_t crb_cmd_consumer[4] = {
118 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
119 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
120};
121
3ce06a32
DP		 122static inline void
123netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
cb2107be 124 struct nx_host_tx_ring *tx_ring)
3176ff3e 125{
cb2107be 126 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
3176ff3e
MT		 127}
128
2956640d 129static uint32_t msi_tgt_status[8] = {
443be796 130 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 131 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
132 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
133 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 134};
135
2956640d
DP		 136static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
137
d8b100c5 138static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 139{
d8b100c5
DP		 140 struct netxen_adapter *adapter = sds_ring->adapter;
141
f98a9f69 142 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 143}
144
d8b100c5 145static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 146{
d8b100c5
DP		 147 struct netxen_adapter *adapter = sds_ring->adapter;
148
f98a9f69 149 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 150
092bc571
DP		 151 if (!NETXEN_IS_MSI_FAMILY(adapter))
152 adapter->pci_write_immediate(adapter,
153 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
4638aef1
SH		 154}
155
71dcddbd
DP		 156static int
157netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
158{
159 int size = sizeof(struct nx_host_sds_ring) * count;
160
161 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
162
163 return (recv_ctx->sds_rings == NULL);
164}
165
d8b100c5 166static void
71dcddbd
DP		 167netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
168{
169 if (recv_ctx->sds_rings != NULL)
170 kfree(recv_ctx->sds_rings);
232e7d68
DP		 171
172 recv_ctx->sds_rings = NULL;
71dcddbd
DP		 173}
174
175static int
d8b100c5
DP		 176netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
177{
178 int ring;
179 struct nx_host_sds_ring *sds_ring;
180 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
181
71dcddbd 182 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
f17443f4 183 return -ENOMEM;
71dcddbd 184
d8b100c5
DP		 185 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
186 sds_ring = &recv_ctx->sds_rings[ring];
187 netif_napi_add(netdev, &sds_ring->napi,
188 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
189 }
71dcddbd
DP		 190
191 return 0;
d8b100c5
DP		 192}
193
232e7d68
DP		 194static void
195netxen_napi_del(struct netxen_adapter *adapter)
196{
197 int ring;
198 struct nx_host_sds_ring *sds_ring;
199 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
200
201 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
202 sds_ring = &recv_ctx->sds_rings[ring];
203 netif_napi_del(&sds_ring->napi);
204 }
205
206 netxen_free_sds_rings(&adapter->recv_ctx);
207}
208
d8b100c5
DP		 209static void
210netxen_napi_enable(struct netxen_adapter *adapter)
211{
212 int ring;
213 struct nx_host_sds_ring *sds_ring;
214 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
215
216 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
217 sds_ring = &recv_ctx->sds_rings[ring];
218 napi_enable(&sds_ring->napi);
219 netxen_nic_enable_int(sds_ring);
220 }
221}
222
223static void
224netxen_napi_disable(struct netxen_adapter *adapter)
225{
226 int ring;
227 struct nx_host_sds_ring *sds_ring;
228 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
229
230 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
231 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 232 netxen_nic_disable_int(sds_ring);
b2af9cb0
DP		 233 napi_synchronize(&sds_ring->napi);
234 napi_disable(&sds_ring->napi);
d8b100c5
DP		 235 }
236}
237
50c643e7 238static int nx_set_dma_mask(struct netxen_adapter *adapter)
2956640d
DP		 239{
240 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 241 uint64_t mask, cmask;
242
243 adapter->pci_using_dac = 0;
2956640d 244
6afd142f 245 mask = DMA_BIT_MASK(32);
6afd142f 246 cmask = DMA_BIT_MASK(32);
1f434f63 247
50c643e7 248 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1f434f63 249#ifndef CONFIG_IA64
6afd142f 250 mask = DMA_BIT_MASK(35);
1f434f63 251#endif
50c643e7
DP		 252 } else {
253 mask = DMA_BIT_MASK(39);
254 cmask = mask;
255 }
256
2956640d 257 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 258 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 259 adapter->pci_using_dac = 1;
260 return 0;
261 }
2956640d 262
1f434f63
DP		 263 return -EIO;
264}
265
266/* Update addressable range if firmware supports it */
267static int
268nx_update_dma_mask(struct netxen_adapter *adapter)
269{
270 int change, shift, err;
50c643e7 271 uint64_t mask, old_mask, old_cmask;
1f434f63
DP		 272 struct pci_dev *pdev = adapter->pdev;
273
274 change = 0;
275
f98a9f69 276 shift = NXRD32(adapter, CRB_DMA_SHIFT);
f60f7856 277 if (shift > 32)
1f434f63
DP		 278 return 0;
279
280 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
281 change = 1;
282 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
283 change = 1;
284
285 if (change) {
286 old_mask = pdev->dma_mask;
50c643e7
DP		 287 old_cmask = pdev->dev.coherent_dma_mask;
288
f60f7856 289 mask = DMA_BIT_MASK(32+shift);
1f434f63
DP		 290
291 err = pci_set_dma_mask(pdev, mask);
292 if (err)
50c643e7
DP		 293 goto err_out;
294
295 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
296
297 err = pci_set_consistent_dma_mask(pdev, mask);
298 if (err)
299 goto err_out;
300 }
301 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
2956640d
DP		 302 }
303
2956640d 304 return 0;
50c643e7
DP		 305
306err_out:
307 pci_set_dma_mask(pdev, old_mask);
308 pci_set_consistent_dma_mask(pdev, old_cmask);
309 return err;
2956640d
DP		 310}
311
24767ab1
DP		 312static void
313netxen_check_options(struct netxen_adapter *adapter)
2956640d 314{
24767ab1
DP		 315 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
316 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
317 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
318 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
319 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
320 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
321 }
2956640d 322
f6d21f44
DP		 323 adapter->msix_supported = 0;
324 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
c7860a2a 325 adapter->msix_supported = !!use_msi_x;
f6d21f44
DP		 326 adapter->rss_supported = !!use_msi_x;
327 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
328 switch (adapter->ahw.board_type) {
329 case NETXEN_BRDTYPE_P2_SB31_10G:
330 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
f6d21f44
DP		 331 adapter->msix_supported = !!use_msi_x;
332 adapter->rss_supported = !!use_msi_x;
333 break;
334 default:
335 break;
336 }
337 }
2956640d 338
24767ab1 339 adapter->num_txd = MAX_CMD_DESCRIPTORS;
2956640d 340
24767ab1
DP		 341 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
342 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
343 adapter->max_rds_rings = 3;
344 } else {
345 adapter->num_lro_rxd = 0;
346 adapter->max_rds_rings = 2;
347 }
2956640d
DP		 348}
349
350static int
351netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
352{
27c915a4 353 u32 val, timeout;
2956640d
DP		 354
355 if (first_boot == 0x55555555) {
356 /* This is the first boot after power up */
f98a9f69 357 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 358
359 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
360 return 0;
2956640d
DP		 361
362 /* PCI bus master workaround */
f98a9f69 363 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 364 if (!(first_boot & 0x4)) {
365 first_boot |= 0x4;
f98a9f69
DP		 366 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
367 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 368 }
369
370 /* This is the first boot after power up */
f98a9f69 371 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 372 if (first_boot != 0x80000f) {
373 /* clear the register for future unloads/loads */
f98a9f69 374 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 375 return -EIO;
2956640d
DP		 376 }
377
27c915a4 378 /* Start P2 boot loader */
f98a9f69
DP		 379 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
380 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 381 timeout = 0;
382 do {
383 msleep(1);
f98a9f69 384 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 385
386 if (++timeout > 5000)
387 return -EIO;
388
389 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 390 }
27c915a4 391 return 0;
2956640d
DP		 392}
393
394static void netxen_set_port_mode(struct netxen_adapter *adapter)
395{
396 u32 val, data;
397
1e2d0059 398 val = adapter->ahw.board_type;
2956640d
DP		 399 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
400 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
401 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
402 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 403 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 404 } else if (port_mode == NETXEN_PORT_MODE_XG) {
405 data = NETXEN_PORT_MODE_XG;
f98a9f69 406 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 407 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
408 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 409 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 410 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
411 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 412 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 413 } else {
414 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 415 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 416 }
417
418 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
419 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
420 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
421 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
422 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
423 }
f98a9f69 424 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 425 }
426}
427
2956640d
DP		 428static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
429{
430 u32 control;
431 int pos;
432
433 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
434 if (pos) {
435 pci_read_config_dword(pdev, pos, &control);
436 if (enable)
437 control |= PCI_MSIX_FLAGS_ENABLE;
438 else
439 control = 0;
440 pci_write_config_dword(pdev, pos, control);
441 }
442}
443
be339aee 444static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 445{
446 int i;
447
be339aee 448 for (i = 0; i < count; i++)
2956640d
DP		 449 adapter->msix_entries[i].entry = i;
450}
451
9dc28efe
DP		 452static int
453netxen_read_mac_addr(struct netxen_adapter *adapter)
454{
455 int i;
456 unsigned char *p;
457 __le64 mac_addr;
9dc28efe
DP		 458 struct net_device *netdev = adapter->netdev;
459 struct pci_dev *pdev = adapter->pdev;
460
9dc28efe
DP		 461 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
462 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
463 return -EIO;
464 } else {
465 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
466 return -EIO;
467 }
468
469 p = (unsigned char *)&mac_addr;
470 for (i = 0; i < 6; i++)
471 netdev->dev_addr[i] = *(p + 5 - i);
472
473 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
474
475 /* set station address */
476
e174961c
JB		 477 if (!is_valid_ether_addr(netdev->perm_addr))
478 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 479
480 return 0;
481}
482
3d0a3cc9
DP		 483int netxen_nic_set_mac(struct net_device *netdev, void *p)
484{
485 struct netxen_adapter *adapter = netdev_priv(netdev);
486 struct sockaddr *addr = p;
487
488 if (!is_valid_ether_addr(addr->sa_data))
489 return -EINVAL;
490
491 if (netif_running(netdev)) {
492 netif_device_detach(netdev);
493 netxen_napi_disable(adapter);
494 }
495
496 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
497 adapter->macaddr_set(adapter, addr->sa_data);
498
499 if (netif_running(netdev)) {
500 netif_device_attach(netdev);
501 netxen_napi_enable(adapter);
502 }
503 return 0;
504}
505
1abd266f
SH		 506static void netxen_set_multicast_list(struct net_device *dev)
507{
508 struct netxen_adapter *adapter = netdev_priv(dev);
509
3d0a3cc9 510 adapter->set_multi(dev);
1abd266f
SH		 511}
512
513static const struct net_device_ops netxen_netdev_ops = {
514 .ndo_open = netxen_nic_open,
515 .ndo_stop = netxen_nic_close,
516 .ndo_start_xmit = netxen_nic_xmit_frame,
517 .ndo_get_stats = netxen_nic_get_stats,
518 .ndo_validate_addr = eth_validate_addr,
519 .ndo_set_multicast_list = netxen_set_multicast_list,
520 .ndo_set_mac_address = netxen_nic_set_mac,
521 .ndo_change_mtu = netxen_nic_change_mtu,
522 .ndo_tx_timeout = netxen_tx_timeout,
523#ifdef CONFIG_NET_POLL_CONTROLLER
524 .ndo_poll_controller = netxen_nic_poll_controller,
525#endif
526};
527
97daee83
DP		 528static void
529netxen_setup_intr(struct netxen_adapter *adapter)
530{
531 struct netxen_legacy_intr_set *legacy_intrp;
532 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 533 int err, num_msix;
534
535 if (adapter->rss_supported) {
536 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
537 MSIX_ENTRIES_PER_ADAPTER : 2;
538 } else
539 num_msix = 1;
540
541 adapter->max_sds_rings = 1;
97daee83
DP		 542
543 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 544
545 if (adapter->ahw.revision_id >= NX_P3_B0)
546 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
547 else
548 legacy_intrp = &legacy_intr[0];
549 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
550 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
551 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
552 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
553
554 netxen_set_msix_bit(pdev, 0);
555
556 if (adapter->msix_supported) {
557
be339aee
DP		 558 netxen_init_msix_entries(adapter, num_msix);
559 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
560 if (err == 0) {
561 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
562 netxen_set_msix_bit(pdev, 1);
97daee83 563
be339aee
DP		 564 if (adapter->rss_supported)
565 adapter->max_sds_rings = num_msix;
97daee83 566
be339aee
DP		 567 dev_info(&pdev->dev, "using msi-x interrupts\n");
568 return;
569 }
570
571 if (err > 0)
572 pci_disable_msix(pdev);
573
574 /* fall through for msi */
97daee83 575 }
be339aee
DP		 576
577 if (use_msi && !pci_enable_msi(pdev)) {
578 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
579 adapter->msi_tgt_status =
580 msi_tgt_status[adapter->ahw.pci_func];
581 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 582 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 583 return;
584 }
585
586 dev_info(&pdev->dev, "using legacy interrupts\n");
587 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 588}
589
590static void
591netxen_teardown_intr(struct netxen_adapter *adapter)
592{
593 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
594 pci_disable_msix(adapter->pdev);
595 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
596 pci_disable_msi(adapter->pdev);
597}
598
599static void
600netxen_cleanup_pci_map(struct netxen_adapter *adapter)
601{
602 if (adapter->ahw.db_base != NULL)
603 iounmap(adapter->ahw.db_base);
604 if (adapter->ahw.pci_base0 != NULL)
605 iounmap(adapter->ahw.pci_base0);
606 if (adapter->ahw.pci_base1 != NULL)
607 iounmap(adapter->ahw.pci_base1);
608 if (adapter->ahw.pci_base2 != NULL)
609 iounmap(adapter->ahw.pci_base2);
610}
611
612static int
613netxen_setup_pci_map(struct netxen_adapter *adapter)
614{
615 void __iomem *mem_ptr0 = NULL;
616 void __iomem *mem_ptr1 = NULL;
617 void __iomem *mem_ptr2 = NULL;
618 void __iomem *db_ptr = NULL;
619
97daee83
DP		 620 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
621
622 struct pci_dev *pdev = adapter->pdev;
623 int pci_func = adapter->ahw.pci_func;
624
625 int err = 0;
626
627 /*
628 * Set the CRB window to invalid. If any register in window 0 is
629 * accessed it should set the window to 0 and then reset it to 1.
630 */
631 adapter->curr_window = 255;
632 adapter->ahw.qdr_sn_window = -1;
633 adapter->ahw.ddr_mn_window = -1;
634
635 /* remap phys address */
636 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
637 mem_len = pci_resource_len(pdev, 0);
638 pci_len0 = 0;
639
640 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
641 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
642 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
643 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
97daee83
DP		 644 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
645 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
646 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
647
648 /* 128 Meg of memory */
649 if (mem_len == NETXEN_PCI_128MB_SIZE) {
650 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
651 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
652 SECOND_PAGE_GROUP_SIZE);
653 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
654 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 655 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
656 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
657 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
658 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 659 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
660 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
661 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
662 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
663 adapter->pci_write_immediate =
664 netxen_nic_pci_write_immediate_2M;
97daee83
DP		 665 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
666 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
667 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
668
669 mem_ptr0 = pci_ioremap_bar(pdev, 0);
670 if (mem_ptr0 == NULL) {
671 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
672 return -EIO;
673 }
674 pci_len0 = mem_len;
97daee83
DP		 675
676 adapter->ahw.ddr_mn_window = 0;
677 adapter->ahw.qdr_sn_window = 0;
678
679 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
680 (pci_func * 0x20);
681 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
682 if (pci_func < 4)
683 adapter->ahw.ms_win_crb += (pci_func * 0x20);
684 else
685 adapter->ahw.ms_win_crb +=
686 0xA0 + ((pci_func - 4) * 0x10);
687 } else {
688 return -EIO;
689 }
690
691 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
692
693 adapter->ahw.pci_base0 = mem_ptr0;
694 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 695 adapter->ahw.pci_base1 = mem_ptr1;
696 adapter->ahw.pci_base2 = mem_ptr2;
697
698 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
699 goto skip_doorbell;
700
701 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
702 db_len = pci_resource_len(pdev, 4);
703
704 if (db_len == 0) {
705 printk(KERN_ERR "%s: doorbell is disabled\n",
706 netxen_nic_driver_name);
707 err = -EIO;
708 goto err_out;
709 }
710
711 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
712 if (!db_ptr) {
713 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
714 netxen_nic_driver_name);
715 err = -EIO;
716 goto err_out;
717 }
718
719skip_doorbell:
720 adapter->ahw.db_base = db_ptr;
721 adapter->ahw.db_len = db_len;
722 return 0;
723
724err_out:
725 netxen_cleanup_pci_map(adapter);
726 return err;
727}
728
ba599d4f 729static int
f7185c71 730netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
ba599d4f
DP		 731{
732 int val, err, first_boot;
733 struct pci_dev *pdev = adapter->pdev;
734
0b72e659 735 int first_driver = 0;
f7185c71
DP		 736
737 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
738 first_driver = (adapter->portnum == 0);
739 else
740 first_driver = (adapter->ahw.pci_func == 0);
0b72e659
DP		 741
742 if (!first_driver)
96f2ebd2 743 goto wait_init;
0b72e659 744
f98a9f69 745 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 746
747 err = netxen_check_hw_init(adapter, first_boot);
748 if (err) {
749 dev_err(&pdev->dev, "error in init HW init sequence\n");
750 return err;
751 }
752
f7185c71
DP		 753 if (request_fw)
754 netxen_request_firmware(adapter);
755
67c38fc6
DP		 756 err = netxen_need_fw_reset(adapter);
757 if (err <= 0)
758 return err;
759
ba599d4f 760 if (first_boot != 0x55555555) {
f98a9f69 761 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
ba599d4f
DP		 762 netxen_pinit_from_rom(adapter, 0);
763 msleep(1);
764 }
567c6c4e 765
f98a9f69 766 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 767 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
768 netxen_set_port_mode(adapter);
769
ba599d4f
DP		 770 netxen_load_firmware(adapter);
771
772 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
773
774 /* Initialize multicast addr pool owners */
775 val = 0x7654;
1e2d0059 776 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 777 val |= 0x0f000000;
f98a9f69 778 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 779
780 }
781
83ac51fa 782 err = netxen_init_dummy_dma(adapter);
ba599d4f
DP		 783 if (err)
784 return err;
785
786 /*
787 * Tell the hardware our version number.
788 */
789 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
790 | ((_NETXEN_NIC_LINUX_MINOR << 8))
791 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 792 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 793
96f2ebd2 794wait_init:
ba599d4f
DP		 795 /* Handshake with the card before we register the devices. */
796 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
797 if (err) {
83ac51fa 798 netxen_free_dummy_dma(adapter);
ba599d4f
DP		 799 return err;
800 }
801
68b3cae0
DP		 802 nx_update_dma_mask(adapter);
803
804 netxen_nic_get_firmware_info(adapter);
805
ba599d4f
DP		 806 return 0;
807}
808
9f5bc7f1
DP		 809static int
810netxen_nic_request_irq(struct netxen_adapter *adapter)
811{
812 irq_handler_t handler;
d8b100c5
DP		 813 struct nx_host_sds_ring *sds_ring;
814 int err, ring;
815
9f5bc7f1
DP		 816 unsigned long flags = IRQF_SAMPLE_RANDOM;
817 struct net_device *netdev = adapter->netdev;
d8b100c5 818 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 819
9f5bc7f1
DP		 820 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
821 handler = netxen_msix_intr;
822 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
823 handler = netxen_msi_intr;
824 else {
825 flags |= IRQF_SHARED;
826 handler = netxen_intr;
827 }
828 adapter->irq = netdev->irq;
829
d8b100c5
DP		 830 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
831 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 832 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 833 err = request_irq(sds_ring->irq, handler,
834 flags, sds_ring->name, sds_ring);
835 if (err)
836 return err;
837 }
838
839 return 0;
840}
841
842static void
843netxen_nic_free_irq(struct netxen_adapter *adapter)
844{
845 int ring;
846 struct nx_host_sds_ring *sds_ring;
847
848 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
849
850 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
851 sds_ring = &recv_ctx->sds_rings[ring];
852 free_irq(sds_ring->irq, sds_ring);
853 }
9f5bc7f1
DP		 854}
855
ca2ef330
DP		 856static void
857netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
858{
859 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
860 adapter->coal.normal.data.rx_time_us =
861 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
862 adapter->coal.normal.data.rx_packets =
863 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
864 adapter->coal.normal.data.tx_time_us =
865 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
866 adapter->coal.normal.data.tx_packets =
867 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
868}
869
9f5bc7f1
DP		 870static int
871netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
872{
873 int err;
874
875 err = adapter->init_port(adapter, adapter->physical_port);
876 if (err) {
877 printk(KERN_ERR "%s: Failed to initialize port %d\n",
878 netxen_nic_driver_name, adapter->portnum);
879 return err;
880 }
3d0a3cc9
DP		 881 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
882 adapter->macaddr_set(adapter, netdev->dev_addr);
9f5bc7f1 883
3d0a3cc9
DP		 884 adapter->set_multi(netdev);
885 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 886
887 adapter->ahw.linkup = 0;
9f5bc7f1 888
d8b100c5
DP		 889 if (adapter->max_sds_rings > 1)
890 netxen_config_rss(adapter, 1);
9f5bc7f1 891
ca2ef330
DP		 892 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
893 netxen_config_intr_coalesce(adapter);
894
b2af9cb0
DP		 895 netxen_napi_enable(adapter);
896
5103c9f7 897 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 898 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 899 else
900 netxen_nic_set_link_parameters(adapter);
901
902 mod_timer(&adapter->watchdog_timer, jiffies);
3bf26ce3 903
9f5bc7f1
DP		 904 return 0;
905}
906
907static void
908netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
909{
b2af9cb0 910 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 911 netif_carrier_off(netdev);
b2af9cb0 912 netif_tx_disable(netdev);
9f5bc7f1
DP		 913
914 if (adapter->stop_port)
915 adapter->stop_port(adapter);
916
5cf4d323
DP		 917 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
918 netxen_p3_free_mac_list(adapter);
919
be339aee
DP		 920 netxen_napi_disable(adapter);
921
9f5bc7f1 922 netxen_release_tx_buffers(adapter);
b2af9cb0 923 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1 924
9f5bc7f1
DP		 925 del_timer_sync(&adapter->watchdog_timer);
926}
927
928
929static int
930netxen_nic_attach(struct netxen_adapter *adapter)
931{
932 struct net_device *netdev = adapter->netdev;
933 struct pci_dev *pdev = adapter->pdev;
becf46a0 934 int err, ring;
d8b100c5 935 struct nx_host_rds_ring *rds_ring;
d877f1e3 936 struct nx_host_tx_ring *tx_ring;
9f5bc7f1 937
7042cd8f
AKS		 938 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
939 return 0;
940
9f5bc7f1 941 err = netxen_init_firmware(adapter);
232e7d68
DP		 942 if (err)
943 return err;
944
945 err = netxen_napi_add(adapter, netdev);
946 if (err)
947 return err;
9f5bc7f1 948
9f5bc7f1
DP		 949 err = netxen_alloc_sw_resources(adapter);
950 if (err) {
951 printk(KERN_ERR "%s: Error in setting sw resources\n",
952 netdev->name);
953 return err;
954 }
955
956 netxen_nic_clear_stats(adapter);
957
958 err = netxen_alloc_hw_resources(adapter);
959 if (err) {
960 printk(KERN_ERR "%s: Error in setting hw resources\n",
961 netdev->name);
962 goto err_out_free_sw;
963 }
964
4f96b988 965 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
4ea528a1 966 tx_ring = adapter->tx_ring;
d877f1e3
DP		 967 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
968 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
9f5bc7f1 969
cb2107be
DP		 970 tx_ring->producer = 0;
971 tx_ring->sw_consumer = 0;
972
973 netxen_nic_update_cmd_producer(adapter, tx_ring);
974 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 975 }
976
d8b100c5
DP		 977 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
978 rds_ring = &adapter->recv_ctx.rds_rings[ring];
979 netxen_post_rx_buffers(adapter, ring, rds_ring);
980 }
9f5bc7f1
DP		 981
982 err = netxen_nic_request_irq(adapter);
983 if (err) {
984 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
985 netdev->name);
986 goto err_out_free_rxbuf;
987 }
988
ca2ef330
DP		 989 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
990 netxen_nic_init_coalesce_defaults(adapter);
991
9f5bc7f1
DP		 992 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
993 return 0;
994
995err_out_free_rxbuf:
996 netxen_release_rx_buffers(adapter);
997 netxen_free_hw_resources(adapter);
998err_out_free_sw:
999 netxen_free_sw_resources(adapter);
1000 return err;
1001}
1002
1003static void
1004netxen_nic_detach(struct netxen_adapter *adapter)
1005{
7042cd8f
AKS		 1006 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1007 return;
1008
9f5bc7f1 1009 netxen_free_hw_resources(adapter);
cf981ffb 1010 netxen_release_rx_buffers(adapter);
be339aee 1011 netxen_nic_free_irq(adapter);
232e7d68 1012 netxen_napi_del(adapter);
9f5bc7f1
DP		 1013 netxen_free_sw_resources(adapter);
1014
1015 adapter->is_up = 0;
1016}
1017
7042cd8f
AKS		 1018int
1019netxen_nic_reset_context(struct netxen_adapter *adapter)
1020{
1021 int err = 0;
1022 struct net_device *netdev = adapter->netdev;
1023
1024 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1025
1026 if (netif_running(netdev))
1027 netxen_nic_down(adapter, netdev);
1028
1029 netxen_nic_detach(adapter);
1030
1031 err = netxen_nic_attach(adapter);
1032 if (err)
1033 goto done;
1034
1035 if (netif_running(netdev))
1036 err = netxen_nic_up(adapter, netdev);
1037 }
1038done:
1039 return err;
1040}
1041
f17443f4
DP		 1042static int
1043netxen_setup_netdev(struct netxen_adapter *adapter,
1044 struct net_device *netdev)
1045{
1046 int err = 0;
1047 struct pci_dev *pdev = adapter->pdev;
1048
1049 adapter->rx_csum = 1;
1050 adapter->mc_enabled = 0;
1051 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1052 adapter->max_mc_count = 38;
1053 else
1054 adapter->max_mc_count = 16;
1055
1056 netdev->netdev_ops = &netxen_netdev_ops;
1057 netdev->watchdog_timeo = 2*HZ;
1058
1059 netxen_nic_change_mtu(netdev, netdev->mtu);
1060
1061 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1062
1063 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1064 netdev->features |= (NETIF_F_GRO);
1065 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1066
1067 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1068 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1069 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1070 }
1071
1072 if (adapter->pci_using_dac) {
1073 netdev->features |= NETIF_F_HIGHDMA;
1074 netdev->vlan_features |= NETIF_F_HIGHDMA;
1075 }
1076
028afe71
DP		 1077 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1078 netdev->features |= (NETIF_F_HW_VLAN_TX);
1079
f17443f4
DP		 1080 netdev->irq = adapter->msix_entries[0].vector;
1081
1082 err = netxen_napi_add(adapter, netdev);
1083 if (err)
1084 return err;
1085
1086 init_timer(&adapter->watchdog_timer);
1087 adapter->watchdog_timer.function = &netxen_watchdog;
1088 adapter->watchdog_timer.data = (unsigned long)adapter;
1089 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1090 INIT_WORK(&adapter->tx_timeout_task, netxen_reset_task);
1091
1092 if (netxen_read_mac_addr(adapter))
1093 dev_warn(&pdev->dev, "failed to read mac addr\n");
1094
1095 netif_carrier_off(netdev);
1096 netif_stop_queue(netdev);
1097
1098 err = register_netdev(netdev);
1099 if (err) {
1100 dev_err(&pdev->dev, "failed to register net device\n");
1101 return err;
1102 }
1103
1104 return 0;
1105}
1106
3d396eb1
AK		 1107static int __devinit
1108netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1109{
1110 struct net_device *netdev = NULL;
1111 struct netxen_adapter *adapter = NULL;
2956640d 1112 int i = 0, err;
3176ff3e 1113 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 1114 uint8_t revision_id;
3d396eb1 1115
3176ff3e 1116 if (pdev->class != 0x020000) {
dcd56fdb 1117 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 1118 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 1119 return -ENODEV;
1120 }
2956640d 1121
11d89d63
DP		 1122 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1123 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1124 "will not be enabled.\n",
1125 NX_P3_A0, NX_P3_B1);
1126 return -ENODEV;
1127 }
1128
3d396eb1
AK		 1129 if ((err = pci_enable_device(pdev)))
1130 return err;
2956640d 1131
3d396eb1
AK		 1132 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1133 err = -ENODEV;
1134 goto err_out_disable_pdev;
1135 }
1136
1137 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1138 goto err_out_disable_pdev;
1139
1140 pci_set_master(pdev);
3176ff3e
MT		 1141
1142 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1143 if(!netdev) {
f17443f4
DP		 1144 dev_err(&pdev->dev, "failed to allocate net_device\n");
1145 err = -ENOMEM;
3176ff3e
MT		 1146 goto err_out_free_res;
1147 }
1148
3176ff3e
MT		 1149 SET_NETDEV_DEV(netdev, &pdev->dev);
1150
4cf1653a 1151 adapter = netdev_priv(netdev);
2956640d
DP		 1152 adapter->netdev = netdev;
1153 adapter->pdev = pdev;
13ba9c77 1154 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1155
1156 revision_id = pdev->revision;
1157 adapter->ahw.revision_id = revision_id;
1158
50c643e7 1159 err = nx_set_dma_mask(adapter);
2956640d
DP		 1160 if (err)
1161 goto err_out_free_netdev;
1162
3ce06a32 1163 rwlock_init(&adapter->adapter_lock);
d8b100c5 1164 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1165 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1166
97daee83
DP		 1167 err = netxen_setup_pci_map(adapter);
1168 if (err)
6c80b18d 1169 goto err_out_free_netdev;
3d396eb1 1170
2d1a3bbd 1171 /* This will be reset for mezz cards */
3176ff3e 1172 adapter->portnum = pci_func_id;
3176ff3e 1173
f17443f4
DP		 1174 err = netxen_nic_get_board_info(adapter);
1175 if (err) {
1176 dev_err(&pdev->dev, "Error getting board config info.\n");
dcd56fdb
DP		 1177 goto err_out_iounmap;
1178 }
6c80b18d 1179
6c80b18d
MT		 1180 netxen_initialize_adapter_ops(adapter);
1181
13ba9c77 1182 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1183 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1184 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1185 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1186 if (pci_func_id >= 2)
13ba9c77 1187 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1188 break;
1189 default:
1190 break;
1191 }
13ba9c77 1192
f7185c71 1193 err = netxen_start_firmware(adapter, 1);
0b72e659
DP		 1194 if (err)
1195 goto err_out_iounmap;
f17443f4 1196
3d396eb1 1197 /*
6c80b18d 1198 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1199 */
dcd56fdb 1200 adapter->physical_port = adapter->portnum;
4f96b988 1201 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
f98a9f69 1202 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1203 if (i != 0x55555555)
1204 adapter->physical_port = i;
1205 }
6c80b18d 1206
438627c7 1207 netxen_check_options(adapter);
2956640d 1208
97daee83 1209 netxen_setup_intr(adapter);
2956640d 1210
f17443f4 1211 err = netxen_setup_netdev(adapter, netdev);
9dc28efe 1212 if (err)
2956640d 1213 goto err_out_disable_msi;
6c80b18d
MT		 1214
1215 pci_set_drvdata(pdev, adapter);
3d396eb1 1216
1e2d0059 1217 switch (adapter->ahw.port_type) {
2956640d
DP		 1218 case NETXEN_NIC_GBE:
1219 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1220 adapter->netdev->name);
1221 break;
1222 case NETXEN_NIC_XGBE:
1223 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1224 adapter->netdev->name);
1225 break;
3d396eb1 1226 }
3d396eb1 1227
2956640d
DP		 1228 return 0;
1229
1230err_out_disable_msi:
97daee83 1231 netxen_teardown_intr(adapter);
6c80b18d 1232
83ac51fa 1233 netxen_free_dummy_dma(adapter);
3d396eb1 1234
2956640d 1235err_out_iounmap:
97daee83 1236 netxen_cleanup_pci_map(adapter);
cb8011ad 1237
6c80b18d
MT		 1238err_out_free_netdev:
1239 free_netdev(netdev);
1240
1241err_out_free_res:
3d396eb1 1242 pci_release_regions(pdev);
6c80b18d
MT		 1243
1244err_out_disable_pdev:
2956640d 1245 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1246 pci_disable_device(pdev);
1247 return err;
1248}
1249
1250static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1251{
1252 struct netxen_adapter *adapter;
3176ff3e 1253 struct net_device *netdev;
3d396eb1 1254
6c80b18d 1255 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1256 if (adapter == NULL)
1257 return;
1258
6c80b18d
MT		 1259 netdev = adapter->netdev;
1260
96acb6eb
DP		 1261 unregister_netdev(netdev);
1262
e424fa9d
AKS		 1263 cancel_work_sync(&adapter->watchdog_task);
1264 cancel_work_sync(&adapter->tx_timeout_task);
1265
7042cd8f 1266 netxen_nic_detach(adapter);
3d396eb1 1267
439b454e 1268 if (adapter->portnum == 0)
83ac51fa 1269 netxen_free_dummy_dma(adapter);
96acb6eb 1270
97daee83 1271 netxen_teardown_intr(adapter);
3052246c 1272
97daee83 1273 netxen_cleanup_pci_map(adapter);
595e3fb8 1274
f7185c71
DP		 1275 netxen_release_firmware(adapter);
1276
595e3fb8 1277 pci_release_regions(pdev);
3052246c 1278 pci_disable_device(pdev);
595e3fb8
MT		 1279 pci_set_drvdata(pdev, NULL);
1280
6c80b18d 1281 free_netdev(netdev);
3d396eb1
AK		 1282}
1283
01542cd1 1284#ifdef CONFIG_PM
0b72e659
DP		 1285static int
1286netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1287{
1288
1289 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1290 struct net_device *netdev = adapter->netdev;
1291
1292 netif_device_detach(netdev);
1293
1294 if (netif_running(netdev))
1295 netxen_nic_down(adapter, netdev);
1296
e424fa9d
AKS		 1297 cancel_work_sync(&adapter->watchdog_task);
1298 cancel_work_sync(&adapter->tx_timeout_task);
1299
7042cd8f 1300 netxen_nic_detach(adapter);
0b72e659
DP		 1301
1302 pci_save_state(pdev);
1303
1304 if (netxen_nic_wol_supported(adapter)) {
1305 pci_enable_wake(pdev, PCI_D3cold, 1);
1306 pci_enable_wake(pdev, PCI_D3hot, 1);
1307 }
1308
1309 pci_disable_device(pdev);
1310 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1311
1312 return 0;
1313}
1314
1315static int
1316netxen_nic_resume(struct pci_dev *pdev)
1317{
1318 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1319 struct net_device *netdev = adapter->netdev;
1320 int err;
1321
1322 pci_set_power_state(pdev, PCI_D0);
1323 pci_restore_state(pdev);
1324
1325 err = pci_enable_device(pdev);
1326 if (err)
1327 return err;
1328
1329 adapter->curr_window = 255;
1330
f7185c71 1331 err = netxen_start_firmware(adapter, 0);
0b72e659
DP		 1332 if (err) {
1333 dev_err(&pdev->dev, "failed to start firmware\n");
1334 return err;
1335 }
1336
1337 if (netif_running(netdev)) {
1338 err = netxen_nic_attach(adapter);
1339 if (err)
1340 return err;
1341
1342 err = netxen_nic_up(adapter, netdev);
1343 if (err)
1344 return err;
1345
1346 netif_device_attach(netdev);
1347 }
1348
1349 return 0;
1350}
01542cd1 1351#endif
0b72e659 1352
3d396eb1
AK		 1353static int netxen_nic_open(struct net_device *netdev)
1354{
4cf1653a 1355 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1356 int err = 0;
3d396eb1 1357
dcd56fdb
DP		 1358 if (adapter->driver_mismatch)
1359 return -EIO;
1360
7042cd8f
AKS		 1361 err = netxen_nic_attach(adapter);
1362 if (err)
1363 return err;
2956640d 1364
9f5bc7f1
DP		 1365 err = netxen_nic_up(adapter, netdev);
1366 if (err)
1367 goto err_out;
05aaa02d 1368
dcd56fdb 1369 netif_start_queue(netdev);
3d396eb1
AK		 1370
1371 return 0;
2956640d 1372
9f5bc7f1
DP		 1373err_out:
1374 netxen_nic_detach(adapter);
2956640d 1375 return err;
3d396eb1
AK		 1376}
1377
1378/*
1379 * netxen_nic_close - Disables a network interface entry point
1380 */
1381static int netxen_nic_close(struct net_device *netdev)
1382{
3176ff3e 1383 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1384
9f5bc7f1 1385 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1386 return 0;
1387}
1388
1bcfd790
DP		 1389static void
1390netxen_tso_check(struct net_device *netdev,
1391 struct nx_host_tx_ring *tx_ring,
1392 struct cmd_desc_type0 *first_desc,
1393 struct sk_buff *skb)
cd1f8160 1394{
391587c3 1395 u8 opcode = TX_ETHER_PKT;
cdff1036 1396 __be16 protocol = skb->protocol;
028afe71 1397 u16 flags = 0, vid = 0;
1bcfd790 1398 u32 producer;
028afe71 1399 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1bcfd790 1400 struct cmd_desc_type0 *hwdesc;
028afe71 1401 struct vlan_ethhdr *vh;
cdff1036 1402
09640e63 1403 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
028afe71
DP		 1404
1405 vh = (struct vlan_ethhdr *)skb->data;
cdff1036
DP		 1406 protocol = vh->h_vlan_encapsulated_proto;
1407 flags = FLAGS_VLAN_TAGGED;
028afe71
DP		 1408
1409 } else if (vlan_tx_tag_present(skb)) {
1410
1411 flags = FLAGS_VLAN_OOB;
1412 vid = vlan_tx_tag_get(skb);
1413 netxen_set_tx_vlan_tci(first_desc, vid);
1414 vlan_oob = 1;
cdff1036 1415 }
cd1f8160 1416
391587c3
DP		 1417 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1418 skb_shinfo(skb)->gso_size > 0) {
1419
1bcfd790
DP		 1420 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1421
1422 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1423 first_desc->total_hdr_length = hdr_len;
028afe71
DP		 1424 if (vlan_oob) {
1425 first_desc->total_hdr_length += VLAN_HLEN;
1426 first_desc->tcp_hdr_offset = VLAN_HLEN;
1427 first_desc->ip_hdr_offset = VLAN_HLEN;
1428 /* Only in case of TSO on vlan device */
1429 flags |= FLAGS_VLAN_TAGGED;
1430 }
391587c3 1431
09640e63 1432 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3 1433 TX_TCP_LSO6 : TX_TCP_LSO;
1bcfd790 1434 tso = 1;
cd1f8160
DP		 1435
1436 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1437 u8 l4proto;
1438
09640e63 1439 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1440 l4proto = ip_hdr(skb)->protocol;
1441
1442 if (l4proto == IPPROTO_TCP)
1443 opcode = TX_TCP_PKT;
1444 else if(l4proto == IPPROTO_UDP)
1445 opcode = TX_UDP_PKT;
09640e63 1446 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1447 l4proto = ipv6_hdr(skb)->nexthdr;
1448
1449 if (l4proto == IPPROTO_TCP)
1450 opcode = TX_TCPV6_PKT;
1451 else if(l4proto == IPPROTO_UDP)
1452 opcode = TX_UDPV6_PKT;
1453 }
cd1f8160 1454 }
028afe71
DP		 1455
1456 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1457 first_desc->ip_hdr_offset += skb_network_offset(skb);
1bcfd790
DP		 1458 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1459
1460 if (!tso)
1461 return;
1462
1463 /* For LSO, we need to copy the MAC/IP/TCP headers into
1464 * the descriptor ring
1465 */
1466 producer = tx_ring->producer;
1467 copied = 0;
1468 offset = 2;
1469
028afe71
DP		 1470 if (vlan_oob) {
1471 /* Create a TSO vlan header template for firmware */
1472
1473 hwdesc = &tx_ring->desc_head[producer];
1474 tx_ring->cmd_buf_arr[producer].skb = NULL;
1475
1476 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1477 hdr_len + VLAN_HLEN);
1478
1479 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1480 skb_copy_from_linear_data(skb, vh, 12);
1481 vh->h_vlan_proto = htons(ETH_P_8021Q);
1482 vh->h_vlan_TCI = htons(vid);
1483 skb_copy_from_linear_data_offset(skb, 12,
1484 (char *)vh + 16, copy_len - 16);
1485
545eb370 1486 copied = copy_len - VLAN_HLEN;
028afe71
DP		 1487 offset = 0;
1488
1489 producer = get_next_index(producer, tx_ring->num_desc);
1490 }
1491
1bcfd790
DP		 1492 while (copied < hdr_len) {
1493
1494 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1495 (hdr_len - copied));
1496
1497 hwdesc = &tx_ring->desc_head[producer];
1498 tx_ring->cmd_buf_arr[producer].skb = NULL;
1499
1500 skb_copy_from_linear_data_offset(skb, copied,
1501 (char *)hwdesc + offset, copy_len);
1502
1503 copied += copy_len;
1504 offset = 0;
1505
1506 producer = get_next_index(producer, tx_ring->num_desc);
1507 }
1508
1509 tx_ring->producer = producer;
1510 barrier();
cd1f8160
DP		 1511}
1512
6f703406
DP		 1513static void
1514netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1515 struct netxen_cmd_buffer *pbuf, int last)
1516{
1517 int k;
1518 struct netxen_skb_frag *buffrag;
1519
1520 buffrag = &pbuf->frag_array[0];
1521 pci_unmap_single(pdev, buffrag->dma,
1522 buffrag->length, PCI_DMA_TODEVICE);
1523
1524 for (k = 1; k < last; k++) {
1525 buffrag = &pbuf->frag_array[k];
1526 pci_unmap_page(pdev, buffrag->dma,
1527 buffrag->length, PCI_DMA_TODEVICE);
1528 }
1529}
1530
d32cc3d2
DP		 1531static inline void
1532netxen_clear_cmddesc(u64 *desc)
1533{
1bcfd790
DP		 1534 desc[0] = 0ULL;
1535 desc[2] = 0ULL;
d32cc3d2
DP		 1536}
1537
1538static int
1539netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1540{
3176ff3e 1541 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1542 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1bcfd790 1543 struct skb_frag_struct *frag;
391587c3 1544 struct netxen_cmd_buffer *pbuf;
3d396eb1 1545 struct netxen_skb_frag *buffrag;
1bcfd790
DP		 1546 struct cmd_desc_type0 *hwdesc, *first_desc;
1547 struct pci_dev *pdev;
6f703406 1548 dma_addr_t temp_dma;
391587c3 1549 int i, k;
1bcfd790 1550 unsigned long offset;
3d396eb1 1551
cb2107be 1552 u32 producer;
1bcfd790 1553 int len, frag_count, no_of_desc;
d877f1e3 1554 u32 num_txd = tx_ring->num_desc;
3d396eb1 1555
3d396eb1
AK		 1556 frag_count = skb_shinfo(skb)->nr_frags + 1;
1557
d877f1e3 1558 /* 4 fragments per cmd des */
3d396eb1 1559 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1560
cb2107be 1561 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
ba53e6b4 1562 netif_stop_queue(netdev);
ba53e6b4 1563 return NETDEV_TX_BUSY;
53a01e00 1564 }
3d396eb1 1565
cb2107be
DP		 1566 producer = tx_ring->producer;
1567
1bcfd790
DP		 1568 pdev = adapter->pdev;
1569 len = skb->len - skb->data_len;
391587c3 1570
1bcfd790
DP		 1571 temp_dma = pci_map_single(pdev, skb->data, len, PCI_DMA_TODEVICE);
1572 if (pci_dma_mapping_error(pdev, temp_dma))
1573 goto drop_packet;
391587c3 1574
1bcfd790 1575 pbuf = &tx_ring->cmd_buf_arr[producer];
3d396eb1 1576 pbuf->skb = skb;
3d396eb1 1577 pbuf->frag_count = frag_count;
6f703406 1578
1bcfd790 1579 buffrag = &pbuf->frag_array[0];
6f703406 1580 buffrag->dma = temp_dma;
1bcfd790
DP		 1581 buffrag->length = len;
1582
1583 first_desc = hwdesc = &tx_ring->desc_head[producer];
1584 netxen_clear_cmddesc((u64 *)hwdesc);
391587c3
DP		 1585 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1586 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1587
1bcfd790
DP		 1588 hwdesc->buffer_length[0] = cpu_to_le16(len);
1589 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
3d396eb1
AK		 1590
1591 for (i = 1, k = 1; i < frag_count; i++, k++) {
3d396eb1
AK		 1592
1593 /* move to next desc. if there is a need */
1594 if ((i & 0x3) == 0) {
1595 k = 0;
ba53e6b4 1596 producer = get_next_index(producer, num_txd);
d877f1e3 1597 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1598 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1599 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1600 pbuf->skb = NULL;
3d396eb1 1601 }
1bcfd790 1602 buffrag = &pbuf->frag_array[i];
3d396eb1
AK		 1603 frag = &skb_shinfo(skb)->frags[i - 1];
1604 len = frag->size;
1605 offset = frag->page_offset;
1606
6f703406 1607 temp_dma = pci_map_page(pdev, frag->page, offset,
3d396eb1 1608 len, PCI_DMA_TODEVICE);
6f703406
DP		 1609 if (pci_dma_mapping_error(pdev, temp_dma)) {
1610 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1611 goto drop_packet;
1612 }
3d396eb1 1613
3d396eb1 1614 buffrag->dma = temp_dma;
1bcfd790 1615 buffrag->length = len;
3d396eb1 1616
1bcfd790 1617 hwdesc->buffer_length[k] = cpu_to_le16(len);
3d396eb1
AK		 1618 switch (k) {
1619 case 0:
3d396eb1
AK		 1620 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1621 break;
1622 case 1:
3d396eb1
AK		 1623 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1624 break;
1625 case 2:
3d396eb1
AK		 1626 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1627 break;
1628 case 3:
3d396eb1
AK		 1629 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1630 break;
1631 }
3d396eb1 1632 }
1bcfd790 1633 tx_ring->producer = get_next_index(producer, num_txd);
3d396eb1 1634
1bcfd790 1635 netxen_tso_check(netdev, tx_ring, first_desc, skb);
6c80b18d 1636
cb2107be 1637 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1638
1bcfd790 1639 adapter->stats.txbytes += skb->len;
ba53e6b4 1640 adapter->stats.xmitcalled++;
3d396eb1 1641
3d396eb1 1642 return NETDEV_TX_OK;
6f703406
DP		 1643
1644drop_packet:
1645 adapter->stats.txdropped++;
1646 dev_kfree_skb_any(skb);
1647 return NETDEV_TX_OK;
3d396eb1
AK		 1648}
1649
a97342f9
DP		 1650static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1651{
1652 struct net_device *netdev = adapter->netdev;
1653 uint32_t temp, temp_state, temp_val;
1654 int rv = 0;
1655
f98a9f69 1656 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1657
1658 temp_state = nx_get_temp_state(temp);
1659 temp_val = nx_get_temp_val(temp);
1660
1661 if (temp_state == NX_TEMP_PANIC) {
1662 printk(KERN_ALERT
1663 "%s: Device temperature %d degrees C exceeds"
1664 " maximum allowed. Hardware has been shut down.\n",
e4135c2d 1665 netdev->name, temp_val);
a97342f9
DP		 1666 rv = 1;
1667 } else if (temp_state == NX_TEMP_WARN) {
1668 if (adapter->temp == NX_TEMP_NORMAL) {
1669 printk(KERN_ALERT
1670 "%s: Device temperature %d degrees C "
1671 "exceeds operating range."
1672 " Immediate action needed.\n",
e4135c2d 1673 netdev->name, temp_val);
a97342f9
DP		 1674 }
1675 } else {
1676 if (adapter->temp == NX_TEMP_WARN) {
1677 printk(KERN_INFO
1678 "%s: Device temperature is now %d degrees C"
e4135c2d 1679 " in normal range.\n", netdev->name,
a97342f9
DP		 1680 temp_val);
1681 }
1682 }
1683 adapter->temp = temp_state;
1684 return rv;
1685}
1686
3bf26ce3 1687void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1688{
1689 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1690
1691 if (adapter->ahw.linkup && !linkup) {
1692 printk(KERN_INFO "%s: %s NIC Link is down\n",
1693 netxen_nic_driver_name, netdev->name);
1694 adapter->ahw.linkup = 0;
1695 if (netif_running(netdev)) {
1696 netif_carrier_off(netdev);
1697 netif_stop_queue(netdev);
1698 }
e424fa9d 1699 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1700 } else if (!adapter->ahw.linkup && linkup) {
1701 printk(KERN_INFO "%s: %s NIC Link is up\n",
1702 netxen_nic_driver_name, netdev->name);
1703 adapter->ahw.linkup = 1;
1704 if (netif_running(netdev)) {
1705 netif_carrier_on(netdev);
1706 netif_wake_queue(netdev);
1707 }
e424fa9d 1708 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1709 }
1710}
1711
3bf26ce3
DP		 1712static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1713{
1714 u32 val, port, linkup;
1715
1716 port = adapter->physical_port;
1717
1718 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1719 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1720 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1721 linkup = (val == XG_LINK_UP_P3);
1722 } else {
f98a9f69 1723 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1724 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1725 linkup = (val >> port) & 1;
1726 else {
1727 val = (val >> port*8) & 0xff;
1728 linkup = (val == XG_LINK_UP);
1729 }
1730 }
1731
1732 netxen_advert_link_change(adapter, linkup);
1733}
1734
e424fa9d
AKS		 1735static void netxen_nic_thermal_shutdown(struct netxen_adapter *adapter)
1736{
1737 struct net_device *netdev = adapter->netdev;
1738
1739 netif_device_detach(netdev);
1740 netxen_nic_down(adapter, netdev);
1741 netxen_nic_detach(adapter);
1742}
1743
3d396eb1
AK		 1744static void netxen_watchdog(unsigned long v)
1745{
1746 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1 1747
e424fa9d
AKS		 1748 if (netxen_nic_check_temp(adapter))
1749 goto do_sched;
1750
1751 if (!adapter->has_link_events) {
1752 netxen_nic_handle_phy_intr(adapter);
1753
1754 if (adapter->link_changed)
1755 goto do_sched;
1756 }
1757
1758 if (netif_running(adapter->netdev))
1759 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1760
1761 return;
1762
1763do_sched:
1764 schedule_work(&adapter->watchdog_task);
3d396eb1
AK		 1765}
1766
a97342f9
DP		 1767void netxen_watchdog_task(struct work_struct *work)
1768{
1769 struct netxen_adapter *adapter =
1770 container_of(work, struct netxen_adapter, watchdog_task);
1771
e424fa9d
AKS		 1772 if (adapter->temp == NX_TEMP_PANIC) {
1773 netxen_nic_thermal_shutdown(adapter);
a97342f9 1774 return;
e424fa9d 1775 }
a97342f9 1776
e424fa9d
AKS		 1777 if (adapter->link_changed)
1778 netxen_nic_set_link_parameters(adapter);
a97342f9 1779
922c4f2c
DP		 1780 if (netif_running(adapter->netdev))
1781 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1782}
1783
3d396eb1
AK		 1784static void netxen_tx_timeout(struct net_device *netdev)
1785{
e424fa9d 1786 struct netxen_adapter *adapter = netdev_priv(netdev);
f17443f4
DP		 1787
1788 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
e424fa9d 1789 schedule_work(&adapter->tx_timeout_task);
3d396eb1
AK		 1790}
1791
f17443f4 1792static void netxen_reset_task(struct work_struct *work)
3d396eb1 1793{
4790654c 1794 struct netxen_adapter *adapter =
3176ff3e 1795 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1796
b2af9cb0
DP		 1797 if (!netif_running(adapter->netdev))
1798 return;
1799
d8b100c5 1800 netxen_napi_disable(adapter);
ba53e6b4 1801
6c80b18d 1802 adapter->netdev->trans_start = jiffies;
ba53e6b4 1803
d8b100c5 1804 netxen_napi_enable(adapter);
6c80b18d 1805 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1806}
1807
a97342f9
DP		 1808struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1809{
1810 struct netxen_adapter *adapter = netdev_priv(netdev);
1811 struct net_device_stats *stats = &adapter->net_stats;
1812
1813 memset(stats, 0, sizeof(*stats));
1814
a97342f9 1815 stats->rx_packets = adapter->stats.no_rcv;
e98e3350 1816 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1817 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1818 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1819 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1820 stats->tx_dropped = adapter->stats.txdropped;
1821
1822 return stats;
1823}
1824
e4c93c81 1825static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1826{
d8b100c5
DP		 1827 struct nx_host_sds_ring *sds_ring = data;
1828 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1829 u32 status = 0;
1830
1831 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1832
1833 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1834 return IRQ_NONE;
e01872af 1835
d71e1be8
DP		 1836 if (adapter->ahw.revision_id >= NX_P3_B1) {
1837 /* check interrupt state machine, to be sure */
1838 status = adapter->pci_read_immediate(adapter,
1839 ISR_INT_STATE_REG);
1840 if (!ISR_LEGACY_INT_TRIGGERED(status))
1841 return IRQ_NONE;
1842
092bc571
DP		 1843 } else {
1844 unsigned long our_int = 0;
d71e1be8 1845
f98a9f69 1846 our_int = NXRD32(adapter, CRB_INT_VECTOR);
092bc571 1847
d71e1be8 1848 /* not our interrupt */
092bc571 1849 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1850 return IRQ_NONE;
1851
092bc571 1852 /* claim interrupt */
f98a9f69 1853 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1854 }
1855
092bc571 1856 /* clear interrupt */
4f96b988 1857 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
d8b100c5 1858 netxen_nic_disable_int(sds_ring);
092bc571
DP		 1859
1860 adapter->pci_write_immediate(adapter,
1861 adapter->legacy_intr.tgt_status_reg,
1862 0xffffffff);
1863 /* read twice to ensure write is flushed */
1864 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1865 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1866
d8b100c5 1867 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1868
1869 return IRQ_HANDLED;
1870}
1871
e4c93c81 1872static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1873{
d8b100c5
DP		 1874 struct nx_host_sds_ring *sds_ring = data;
1875 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1876
092bc571
DP		 1877 /* clear interrupt */
1878 adapter->pci_write_immediate(adapter,
7a2469ce 1879 adapter->msi_tgt_status, 0xffffffff);
092bc571 1880
d8b100c5 1881 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1882 return IRQ_HANDLED;
1883}
1884
b3df68f8
DP		 1885static irqreturn_t netxen_msix_intr(int irq, void *data)
1886{
d8b100c5 1887 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1888
d8b100c5 1889 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1890 return IRQ_HANDLED;
1891}
1892
bea3348e 1893static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1894{
d8b100c5
DP		 1895 struct nx_host_sds_ring *sds_ring =
1896 container_of(napi, struct nx_host_sds_ring, napi);
1897
1898 struct netxen_adapter *adapter = sds_ring->adapter;
1899
05aaa02d 1900 int tx_complete;
bea3348e 1901 int work_done;
3d396eb1 1902
05aaa02d 1903 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1904
d8b100c5 1905 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 1906
05aaa02d 1907 if ((work_done < budget) && tx_complete) {
d8b100c5 1908 napi_complete(&sds_ring->napi);
b2af9cb0
DP		 1909 if (netif_running(adapter->netdev))
1910 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 1911 }
1912
bea3348e 1913 return work_done;
3d396eb1
AK		 1914}
1915
1916#ifdef CONFIG_NET_POLL_CONTROLLER
1917static void netxen_nic_poll_controller(struct net_device *netdev)
1918{
3176ff3e 1919 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1920 disable_irq(adapter->irq);
1494a814 1921 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1922 enable_irq(adapter->irq);
1923}
1924#endif
3d396eb1 1925
044824d9
DP		 1926#ifdef CONFIG_INET
1927
6598b169
DP		 1928#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
1929
1930static int
1931netxen_destip_supported(struct netxen_adapter *adapter)
1932{
1933 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1934 return 0;
1935
1936 if (adapter->ahw.cut_through)
1937 return 0;
1938
1939 return 1;
1940}
1941
1942static int netxen_netdev_event(struct notifier_block *this,
1943 unsigned long event, void *ptr)
1944{
1945 struct netxen_adapter *adapter;
1946 struct net_device *dev = (struct net_device *)ptr;
1947 struct in_device *indev;
1948
1949recheck:
1950 if (dev == NULL)
1951 goto done;
1952
1953 if (dev->priv_flags & IFF_802_1Q_VLAN) {
1954 dev = vlan_dev_real_dev(dev);
1955 goto recheck;
1956 }
1957
1958 if (!is_netxen_netdev(dev))
1959 goto done;
1960
1961 adapter = netdev_priv(dev);
1962
1963 if (!adapter || !netxen_destip_supported(adapter))
1964 goto done;
1965
1966 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1967 goto done;
1968
1969 indev = in_dev_get(dev);
1970 if (!indev)
1971 goto done;
1972
1973 for_ifa(indev) {
1974 switch (event) {
1975 case NETDEV_UP:
1976 netxen_config_ipaddr(adapter,
1977 ifa->ifa_address, NX_IP_UP);
1978 break;
1979 case NETDEV_DOWN:
1980 netxen_config_ipaddr(adapter,
1981 ifa->ifa_address, NX_IP_DOWN);
1982 break;
1983 default:
1984 break;
1985 }
1986 } endfor_ifa(indev);
1987
1988 in_dev_put(indev);
1989done:
1990 return NOTIFY_DONE;
1991}
1992
1993static int
1994netxen_inetaddr_event(struct notifier_block *this,
1995 unsigned long event, void *ptr)
1996{
1997 struct netxen_adapter *adapter;
1998 struct net_device *dev;
1999
2000 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2001
2002 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2003
2004recheck:
2005 if (dev == NULL || !netif_running(dev))
2006 goto done;
2007
2008 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2009 dev = vlan_dev_real_dev(dev);
2010 goto recheck;
2011 }
2012
2013 if (!is_netxen_netdev(dev))
2014 goto done;
2015
2016 adapter = netdev_priv(dev);
2017
2018 if (!adapter || !netxen_destip_supported(adapter))
2019 goto done;
2020
2021 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2022 goto done;
2023
2024 switch (event) {
2025 case NETDEV_UP:
2026 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2027 break;
2028 case NETDEV_DOWN:
2029 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2030 break;
2031 default:
2032 break;
2033 }
2034
2035done:
2036 return NOTIFY_DONE;
2037}
2038
2039static struct notifier_block netxen_netdev_cb = {
2040 .notifier_call = netxen_netdev_event,
2041};
2042
2043static struct notifier_block netxen_inetaddr_cb = {
2044 .notifier_call = netxen_inetaddr_event,
2045};
044824d9 2046#endif
6598b169 2047
3d396eb1
AK		 2048static struct pci_driver netxen_driver = {
2049 .name = netxen_nic_driver_name,
2050 .id_table = netxen_pci_tbl,
2051 .probe = netxen_nic_probe,
0b72e659 2052 .remove = __devexit_p(netxen_nic_remove),
01542cd1 2053#ifdef CONFIG_PM
0b72e659
DP		 2054 .suspend = netxen_nic_suspend,
2055 .resume = netxen_nic_resume
01542cd1 2056#endif
3d396eb1
AK		 2057};
2058
3d396eb1
AK		 2059static int __init netxen_init_module(void)
2060{
ff4fbd43
DP		 2061 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2062
044824d9 2063#ifdef CONFIG_INET
6598b169
DP		 2064 register_netdevice_notifier(&netxen_netdev_cb);
2065 register_inetaddr_notifier(&netxen_inetaddr_cb);
044824d9 2066#endif
6598b169 2067
184231bd 2068 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 2069}
2070
2071module_init(netxen_init_module);
2072
2073static void __exit netxen_exit_module(void)
2074{
3d396eb1 2075 pci_unregister_driver(&netxen_driver);
6598b169 2076
044824d9 2077#ifdef CONFIG_INET
6598b169
DP		 2078 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2079 unregister_netdevice_notifier(&netxen_netdev_cb);
044824d9 2080#endif
3d396eb1
AK		 2081}
2082
2083module_exit(netxen_exit_module);
Linux kernel - Deliverables
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