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netxen: enable ip addr hashing
[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);
6d5aefb8 69static void netxen_tx_timeout_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
b1555130
AB		 98static struct workqueue_struct *netxen_workq;
99#define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
100#define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
101
ed25ffa1
AK		 102static void netxen_watchdog(unsigned long);
103
7830b22c
DP		 104static uint32_t crb_cmd_producer[4] = {
105 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
106 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
107};
108
c9fc891f 109void
3ce06a32 110netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
cb2107be 111 struct nx_host_tx_ring *tx_ring)
3176ff3e 112{
cb2107be
DP		 113 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
114
115 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
116 netif_stop_queue(adapter->netdev);
117 smp_mb();
118 }
3176ff3e
MT		 119}
120
7830b22c
DP		 121static uint32_t crb_cmd_consumer[4] = {
122 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
123 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
124};
125
3ce06a32
DP		 126static inline void
127netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
cb2107be 128 struct nx_host_tx_ring *tx_ring)
3176ff3e 129{
cb2107be 130 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
3176ff3e
MT		 131}
132
2956640d 133static uint32_t msi_tgt_status[8] = {
443be796 134 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 135 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
136 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
137 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 138};
139
2956640d
DP		 140static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
141
d8b100c5 142static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 143{
d8b100c5
DP		 144 struct netxen_adapter *adapter = sds_ring->adapter;
145
f98a9f69 146 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 147}
148
d8b100c5 149static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 150{
d8b100c5
DP		 151 struct netxen_adapter *adapter = sds_ring->adapter;
152
f98a9f69 153 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 154
092bc571
DP		 155 if (!NETXEN_IS_MSI_FAMILY(adapter))
156 adapter->pci_write_immediate(adapter,
157 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
4638aef1
SH		 158}
159
71dcddbd
DP		 160static int
161netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
162{
163 int size = sizeof(struct nx_host_sds_ring) * count;
164
165 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
166
167 return (recv_ctx->sds_rings == NULL);
168}
169
d8b100c5 170static void
71dcddbd
DP		 171netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
172{
173 if (recv_ctx->sds_rings != NULL)
174 kfree(recv_ctx->sds_rings);
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
DP		 184 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
185 return 1;
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
196static void
197netxen_napi_enable(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 napi_enable(&sds_ring->napi);
206 netxen_nic_enable_int(sds_ring);
207 }
208}
209
210static void
211netxen_napi_disable(struct netxen_adapter *adapter)
212{
213 int ring;
214 struct nx_host_sds_ring *sds_ring;
215 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
216
217 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
218 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 219 netxen_nic_disable_int(sds_ring);
b2af9cb0
DP		 220 napi_synchronize(&sds_ring->napi);
221 napi_disable(&sds_ring->napi);
d8b100c5
DP		 222 }
223}
224
2956640d
DP		 225static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
226{
227 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 228 uint64_t mask, cmask;
229
230 adapter->pci_using_dac = 0;
2956640d 231
6afd142f 232 mask = DMA_BIT_MASK(32);
2956640d
DP		 233 /*
234 * Consistent DMA mask is set to 32 bit because it cannot be set to
235 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
236 * come off this pool.
237 */
6afd142f 238 cmask = DMA_BIT_MASK(32);
1f434f63
DP		 239
240#ifndef CONFIG_IA64
241 if (revision_id >= NX_P3_B0)
6afd142f 242 mask = DMA_BIT_MASK(39);
1f434f63 243 else if (revision_id == NX_P2_C1)
6afd142f 244 mask = DMA_BIT_MASK(35);
1f434f63 245#endif
2956640d 246 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 247 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 248 adapter->pci_using_dac = 1;
249 return 0;
250 }
2956640d 251
1f434f63
DP		 252 return -EIO;
253}
254
255/* Update addressable range if firmware supports it */
256static int
257nx_update_dma_mask(struct netxen_adapter *adapter)
258{
259 int change, shift, err;
260 uint64_t mask, old_mask;
261 struct pci_dev *pdev = adapter->pdev;
262
263 change = 0;
264
f98a9f69 265 shift = NXRD32(adapter, CRB_DMA_SHIFT);
1f434f63
DP		 266 if (shift >= 32)
267 return 0;
268
269 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
270 change = 1;
271 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
272 change = 1;
273
274 if (change) {
275 old_mask = pdev->dma_mask;
276 mask = (1ULL<<(32+shift)) - 1;
277
278 err = pci_set_dma_mask(pdev, mask);
279 if (err)
280 return pci_set_dma_mask(pdev, old_mask);
2956640d
DP		 281 }
282
2956640d
DP		 283 return 0;
284}
285
286static void netxen_check_options(struct netxen_adapter *adapter)
287{
438627c7
DP		 288 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
289 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
290 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
291 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
2956640d 292
f6d21f44
DP		 293 adapter->msix_supported = 0;
294 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
c7860a2a 295 adapter->msix_supported = !!use_msi_x;
f6d21f44
DP		 296 adapter->rss_supported = !!use_msi_x;
297 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
298 switch (adapter->ahw.board_type) {
299 case NETXEN_BRDTYPE_P2_SB31_10G:
300 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
f6d21f44
DP		 301 adapter->msix_supported = !!use_msi_x;
302 adapter->rss_supported = !!use_msi_x;
303 break;
304 default:
305 break;
306 }
307 }
2956640d 308
438627c7
DP		 309 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
310 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
311 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
2956640d 312
2956640d
DP		 313 return;
314}
315
316static int
317netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
318{
27c915a4 319 u32 val, timeout;
2956640d
DP		 320
321 if (first_boot == 0x55555555) {
322 /* This is the first boot after power up */
f98a9f69 323 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 324
325 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
326 return 0;
2956640d
DP		 327
328 /* PCI bus master workaround */
f98a9f69 329 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 330 if (!(first_boot & 0x4)) {
331 first_boot |= 0x4;
f98a9f69
DP		 332 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
333 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 334 }
335
336 /* This is the first boot after power up */
f98a9f69 337 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 338 if (first_boot != 0x80000f) {
339 /* clear the register for future unloads/loads */
f98a9f69 340 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 341 return -EIO;
2956640d
DP		 342 }
343
27c915a4 344 /* Start P2 boot loader */
f98a9f69
DP		 345 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
346 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 347 timeout = 0;
348 do {
349 msleep(1);
f98a9f69 350 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 351
352 if (++timeout > 5000)
353 return -EIO;
354
355 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 356 }
27c915a4 357 return 0;
2956640d
DP		 358}
359
360static void netxen_set_port_mode(struct netxen_adapter *adapter)
361{
362 u32 val, data;
363
1e2d0059 364 val = adapter->ahw.board_type;
2956640d
DP		 365 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
366 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
367 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
368 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 369 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 370 } else if (port_mode == NETXEN_PORT_MODE_XG) {
371 data = NETXEN_PORT_MODE_XG;
f98a9f69 372 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 373 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
374 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 375 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 376 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
377 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 378 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 379 } else {
380 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 381 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 382 }
383
384 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
385 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
386 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
387 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
388 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
389 }
f98a9f69 390 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 391 }
392}
393
2956640d
DP		 394static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
395{
396 u32 control;
397 int pos;
398
399 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
400 if (pos) {
401 pci_read_config_dword(pdev, pos, &control);
402 if (enable)
403 control |= PCI_MSIX_FLAGS_ENABLE;
404 else
405 control = 0;
406 pci_write_config_dword(pdev, pos, control);
407 }
408}
409
be339aee 410static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 411{
412 int i;
413
be339aee 414 for (i = 0; i < count; i++)
2956640d
DP		 415 adapter->msix_entries[i].entry = i;
416}
417
9dc28efe
DP		 418static int
419netxen_read_mac_addr(struct netxen_adapter *adapter)
420{
421 int i;
422 unsigned char *p;
423 __le64 mac_addr;
9dc28efe
DP		 424 struct net_device *netdev = adapter->netdev;
425 struct pci_dev *pdev = adapter->pdev;
426
9dc28efe
DP		 427 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
428 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
429 return -EIO;
430 } else {
431 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
432 return -EIO;
433 }
434
435 p = (unsigned char *)&mac_addr;
436 for (i = 0; i < 6; i++)
437 netdev->dev_addr[i] = *(p + 5 - i);
438
439 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
440
441 /* set station address */
442
e174961c
JB		 443 if (!is_valid_ether_addr(netdev->perm_addr))
444 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 445
446 return 0;
447}
448
3d0a3cc9
DP		 449int netxen_nic_set_mac(struct net_device *netdev, void *p)
450{
451 struct netxen_adapter *adapter = netdev_priv(netdev);
452 struct sockaddr *addr = p;
453
454 if (!is_valid_ether_addr(addr->sa_data))
455 return -EINVAL;
456
457 if (netif_running(netdev)) {
458 netif_device_detach(netdev);
459 netxen_napi_disable(adapter);
460 }
461
462 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
463 adapter->macaddr_set(adapter, addr->sa_data);
464
465 if (netif_running(netdev)) {
466 netif_device_attach(netdev);
467 netxen_napi_enable(adapter);
468 }
469 return 0;
470}
471
1abd266f
SH		 472static void netxen_set_multicast_list(struct net_device *dev)
473{
474 struct netxen_adapter *adapter = netdev_priv(dev);
475
3d0a3cc9 476 adapter->set_multi(dev);
1abd266f
SH		 477}
478
479static const struct net_device_ops netxen_netdev_ops = {
480 .ndo_open = netxen_nic_open,
481 .ndo_stop = netxen_nic_close,
482 .ndo_start_xmit = netxen_nic_xmit_frame,
483 .ndo_get_stats = netxen_nic_get_stats,
484 .ndo_validate_addr = eth_validate_addr,
485 .ndo_set_multicast_list = netxen_set_multicast_list,
486 .ndo_set_mac_address = netxen_nic_set_mac,
487 .ndo_change_mtu = netxen_nic_change_mtu,
488 .ndo_tx_timeout = netxen_tx_timeout,
489#ifdef CONFIG_NET_POLL_CONTROLLER
490 .ndo_poll_controller = netxen_nic_poll_controller,
491#endif
492};
493
97daee83
DP		 494static void
495netxen_setup_intr(struct netxen_adapter *adapter)
496{
497 struct netxen_legacy_intr_set *legacy_intrp;
498 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 499 int err, num_msix;
500
501 if (adapter->rss_supported) {
502 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
503 MSIX_ENTRIES_PER_ADAPTER : 2;
504 } else
505 num_msix = 1;
506
507 adapter->max_sds_rings = 1;
97daee83
DP		 508
509 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 510
511 if (adapter->ahw.revision_id >= NX_P3_B0)
512 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
513 else
514 legacy_intrp = &legacy_intr[0];
515 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
516 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
517 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
518 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
519
520 netxen_set_msix_bit(pdev, 0);
521
522 if (adapter->msix_supported) {
523
be339aee
DP		 524 netxen_init_msix_entries(adapter, num_msix);
525 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
526 if (err == 0) {
527 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
528 netxen_set_msix_bit(pdev, 1);
97daee83 529
be339aee
DP		 530 if (adapter->rss_supported)
531 adapter->max_sds_rings = num_msix;
97daee83 532
be339aee
DP		 533 dev_info(&pdev->dev, "using msi-x interrupts\n");
534 return;
535 }
536
537 if (err > 0)
538 pci_disable_msix(pdev);
539
540 /* fall through for msi */
97daee83 541 }
be339aee
DP		 542
543 if (use_msi && !pci_enable_msi(pdev)) {
544 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
545 adapter->msi_tgt_status =
546 msi_tgt_status[adapter->ahw.pci_func];
547 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 548 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 549 return;
550 }
551
552 dev_info(&pdev->dev, "using legacy interrupts\n");
553 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 554}
555
556static void
557netxen_teardown_intr(struct netxen_adapter *adapter)
558{
559 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
560 pci_disable_msix(adapter->pdev);
561 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
562 pci_disable_msi(adapter->pdev);
563}
564
565static void
566netxen_cleanup_pci_map(struct netxen_adapter *adapter)
567{
568 if (adapter->ahw.db_base != NULL)
569 iounmap(adapter->ahw.db_base);
570 if (adapter->ahw.pci_base0 != NULL)
571 iounmap(adapter->ahw.pci_base0);
572 if (adapter->ahw.pci_base1 != NULL)
573 iounmap(adapter->ahw.pci_base1);
574 if (adapter->ahw.pci_base2 != NULL)
575 iounmap(adapter->ahw.pci_base2);
576}
577
578static int
579netxen_setup_pci_map(struct netxen_adapter *adapter)
580{
581 void __iomem *mem_ptr0 = NULL;
582 void __iomem *mem_ptr1 = NULL;
583 void __iomem *mem_ptr2 = NULL;
584 void __iomem *db_ptr = NULL;
585
97daee83
DP		 586 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
587
588 struct pci_dev *pdev = adapter->pdev;
589 int pci_func = adapter->ahw.pci_func;
590
591 int err = 0;
592
593 /*
594 * Set the CRB window to invalid. If any register in window 0 is
595 * accessed it should set the window to 0 and then reset it to 1.
596 */
597 adapter->curr_window = 255;
598 adapter->ahw.qdr_sn_window = -1;
599 adapter->ahw.ddr_mn_window = -1;
600
601 /* remap phys address */
602 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
603 mem_len = pci_resource_len(pdev, 0);
604 pci_len0 = 0;
605
606 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
607 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
608 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
609 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
97daee83
DP		 610 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
611 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
612 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
613
614 /* 128 Meg of memory */
615 if (mem_len == NETXEN_PCI_128MB_SIZE) {
616 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
617 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
618 SECOND_PAGE_GROUP_SIZE);
619 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
620 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 621 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
622 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
623 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
624 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 625 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
626 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
627 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
628 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
629 adapter->pci_write_immediate =
630 netxen_nic_pci_write_immediate_2M;
97daee83
DP		 631 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
632 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
633 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
634
635 mem_ptr0 = pci_ioremap_bar(pdev, 0);
636 if (mem_ptr0 == NULL) {
637 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
638 return -EIO;
639 }
640 pci_len0 = mem_len;
97daee83
DP		 641
642 adapter->ahw.ddr_mn_window = 0;
643 adapter->ahw.qdr_sn_window = 0;
644
645 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
646 (pci_func * 0x20);
647 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
648 if (pci_func < 4)
649 adapter->ahw.ms_win_crb += (pci_func * 0x20);
650 else
651 adapter->ahw.ms_win_crb +=
652 0xA0 + ((pci_func - 4) * 0x10);
653 } else {
654 return -EIO;
655 }
656
657 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
658
659 adapter->ahw.pci_base0 = mem_ptr0;
660 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 661 adapter->ahw.pci_base1 = mem_ptr1;
662 adapter->ahw.pci_base2 = mem_ptr2;
663
664 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
665 goto skip_doorbell;
666
667 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
668 db_len = pci_resource_len(pdev, 4);
669
670 if (db_len == 0) {
671 printk(KERN_ERR "%s: doorbell is disabled\n",
672 netxen_nic_driver_name);
673 err = -EIO;
674 goto err_out;
675 }
676
677 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
678 if (!db_ptr) {
679 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
680 netxen_nic_driver_name);
681 err = -EIO;
682 goto err_out;
683 }
684
685skip_doorbell:
686 adapter->ahw.db_base = db_ptr;
687 adapter->ahw.db_len = db_len;
688 return 0;
689
690err_out:
691 netxen_cleanup_pci_map(adapter);
692 return err;
693}
694
ba599d4f 695static int
f7185c71 696netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
ba599d4f
DP		 697{
698 int val, err, first_boot;
699 struct pci_dev *pdev = adapter->pdev;
700
0b72e659 701 int first_driver = 0;
f7185c71
DP		 702
703 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
704 first_driver = (adapter->portnum == 0);
705 else
706 first_driver = (adapter->ahw.pci_func == 0);
0b72e659
DP		 707
708 if (!first_driver)
96f2ebd2 709 goto wait_init;
0b72e659 710
f98a9f69 711 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 712
713 err = netxen_check_hw_init(adapter, first_boot);
714 if (err) {
715 dev_err(&pdev->dev, "error in init HW init sequence\n");
716 return err;
717 }
718
f7185c71
DP		 719 if (request_fw)
720 netxen_request_firmware(adapter);
721
67c38fc6
DP		 722 err = netxen_need_fw_reset(adapter);
723 if (err <= 0)
724 return err;
725
ba599d4f 726 if (first_boot != 0x55555555) {
f98a9f69 727 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
ba599d4f
DP		 728 netxen_pinit_from_rom(adapter, 0);
729 msleep(1);
730 }
567c6c4e 731
f98a9f69 732 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 733 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
734 netxen_set_port_mode(adapter);
735
ba599d4f
DP		 736 netxen_load_firmware(adapter);
737
738 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
739
740 /* Initialize multicast addr pool owners */
741 val = 0x7654;
1e2d0059 742 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 743 val |= 0x0f000000;
f98a9f69 744 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 745
746 }
747
748 err = netxen_initialize_adapter_offload(adapter);
749 if (err)
750 return err;
751
752 /*
753 * Tell the hardware our version number.
754 */
755 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
756 | ((_NETXEN_NIC_LINUX_MINOR << 8))
757 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 758 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 759
96f2ebd2 760wait_init:
ba599d4f
DP		 761 /* Handshake with the card before we register the devices. */
762 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
763 if (err) {
764 netxen_free_adapter_offload(adapter);
765 return err;
766 }
767
68b3cae0
DP		 768 nx_update_dma_mask(adapter);
769
770 netxen_nic_get_firmware_info(adapter);
771
ba599d4f
DP		 772 return 0;
773}
774
9f5bc7f1
DP		 775static int
776netxen_nic_request_irq(struct netxen_adapter *adapter)
777{
778 irq_handler_t handler;
d8b100c5
DP		 779 struct nx_host_sds_ring *sds_ring;
780 int err, ring;
781
9f5bc7f1
DP		 782 unsigned long flags = IRQF_SAMPLE_RANDOM;
783 struct net_device *netdev = adapter->netdev;
d8b100c5 784 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 785
9f5bc7f1
DP		 786 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
787 handler = netxen_msix_intr;
788 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
789 handler = netxen_msi_intr;
790 else {
791 flags |= IRQF_SHARED;
792 handler = netxen_intr;
793 }
794 adapter->irq = netdev->irq;
795
d8b100c5
DP		 796 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
797 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 798 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 799 err = request_irq(sds_ring->irq, handler,
800 flags, sds_ring->name, sds_ring);
801 if (err)
802 return err;
803 }
804
805 return 0;
806}
807
808static void
809netxen_nic_free_irq(struct netxen_adapter *adapter)
810{
811 int ring;
812 struct nx_host_sds_ring *sds_ring;
813
814 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
815
816 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
817 sds_ring = &recv_ctx->sds_rings[ring];
818 free_irq(sds_ring->irq, sds_ring);
819 }
9f5bc7f1
DP		 820}
821
822static int
823netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
824{
825 int err;
826
827 err = adapter->init_port(adapter, adapter->physical_port);
828 if (err) {
829 printk(KERN_ERR "%s: Failed to initialize port %d\n",
830 netxen_nic_driver_name, adapter->portnum);
831 return err;
832 }
3d0a3cc9
DP		 833 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
834 adapter->macaddr_set(adapter, netdev->dev_addr);
9f5bc7f1 835
3d0a3cc9
DP		 836 adapter->set_multi(netdev);
837 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 838
839 adapter->ahw.linkup = 0;
9f5bc7f1 840
d8b100c5
DP		 841 if (adapter->max_sds_rings > 1)
842 netxen_config_rss(adapter, 1);
9f5bc7f1 843
b2af9cb0
DP		 844 netxen_napi_enable(adapter);
845
5103c9f7 846 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 847 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 848 else
849 netxen_nic_set_link_parameters(adapter);
850
851 mod_timer(&adapter->watchdog_timer, jiffies);
3bf26ce3 852
9f5bc7f1
DP		 853 return 0;
854}
855
856static void
857netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
858{
b2af9cb0 859 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 860 netif_carrier_off(netdev);
b2af9cb0 861 netif_tx_disable(netdev);
9f5bc7f1
DP		 862
863 if (adapter->stop_port)
864 adapter->stop_port(adapter);
865
5cf4d323
DP		 866 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
867 netxen_p3_free_mac_list(adapter);
868
be339aee
DP		 869 netxen_napi_disable(adapter);
870
9f5bc7f1 871 netxen_release_tx_buffers(adapter);
b2af9cb0 872 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1 873
9f5bc7f1 874 del_timer_sync(&adapter->watchdog_timer);
b2af9cb0 875 FLUSH_SCHEDULED_WORK();
9f5bc7f1
DP		 876}
877
878
879static int
880netxen_nic_attach(struct netxen_adapter *adapter)
881{
882 struct net_device *netdev = adapter->netdev;
883 struct pci_dev *pdev = adapter->pdev;
becf46a0 884 int err, ring;
d8b100c5 885 struct nx_host_rds_ring *rds_ring;
d877f1e3 886 struct nx_host_tx_ring *tx_ring;
9f5bc7f1
DP		 887
888 err = netxen_init_firmware(adapter);
889 if (err != 0) {
890 printk(KERN_ERR "Failed to init firmware\n");
891 return -EIO;
892 }
893
894 if (adapter->fw_major < 4)
895 adapter->max_rds_rings = 3;
896 else
897 adapter->max_rds_rings = 2;
898
899 err = netxen_alloc_sw_resources(adapter);
900 if (err) {
901 printk(KERN_ERR "%s: Error in setting sw resources\n",
902 netdev->name);
903 return err;
904 }
905
906 netxen_nic_clear_stats(adapter);
907
908 err = netxen_alloc_hw_resources(adapter);
909 if (err) {
910 printk(KERN_ERR "%s: Error in setting hw resources\n",
911 netdev->name);
912 goto err_out_free_sw;
913 }
914
915 if (adapter->fw_major < 4) {
4ea528a1 916 tx_ring = adapter->tx_ring;
d877f1e3
DP		 917 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
918 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
9f5bc7f1 919
cb2107be
DP		 920 tx_ring->producer = 0;
921 tx_ring->sw_consumer = 0;
922
923 netxen_nic_update_cmd_producer(adapter, tx_ring);
924 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 925 }
926
d8b100c5
DP		 927 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
928 rds_ring = &adapter->recv_ctx.rds_rings[ring];
929 netxen_post_rx_buffers(adapter, ring, rds_ring);
930 }
9f5bc7f1
DP		 931
932 err = netxen_nic_request_irq(adapter);
933 if (err) {
934 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
935 netdev->name);
936 goto err_out_free_rxbuf;
937 }
938
939 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
940 return 0;
941
942err_out_free_rxbuf:
943 netxen_release_rx_buffers(adapter);
944 netxen_free_hw_resources(adapter);
945err_out_free_sw:
946 netxen_free_sw_resources(adapter);
947 return err;
948}
949
950static void
951netxen_nic_detach(struct netxen_adapter *adapter)
952{
9f5bc7f1 953 netxen_free_hw_resources(adapter);
cf981ffb 954 netxen_release_rx_buffers(adapter);
be339aee 955 netxen_nic_free_irq(adapter);
9f5bc7f1
DP		 956 netxen_free_sw_resources(adapter);
957
958 adapter->is_up = 0;
959}
960
3d396eb1
AK		 961static int __devinit
962netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
963{
964 struct net_device *netdev = NULL;
965 struct netxen_adapter *adapter = NULL;
2956640d 966 int i = 0, err;
3176ff3e 967 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 968 uint8_t revision_id;
3d396eb1 969
3176ff3e 970 if (pdev->class != 0x020000) {
dcd56fdb 971 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 972 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 973 return -ENODEV;
974 }
2956640d 975
11d89d63
DP		 976 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
977 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
978 "will not be enabled.\n",
979 NX_P3_A0, NX_P3_B1);
980 return -ENODEV;
981 }
982
3d396eb1
AK		 983 if ((err = pci_enable_device(pdev)))
984 return err;
2956640d 985
3d396eb1
AK		 986 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
987 err = -ENODEV;
988 goto err_out_disable_pdev;
989 }
990
991 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
992 goto err_out_disable_pdev;
993
994 pci_set_master(pdev);
3176ff3e
MT		 995
996 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
997 if(!netdev) {
998 printk(KERN_ERR"%s: Failed to allocate memory for the "
999 "device block.Check system memory resource"
1000 " usage.\n", netxen_nic_driver_name);
1001 goto err_out_free_res;
1002 }
1003
3176ff3e
MT		 1004 SET_NETDEV_DEV(netdev, &pdev->dev);
1005
4cf1653a 1006 adapter = netdev_priv(netdev);
2956640d
DP		 1007 adapter->netdev = netdev;
1008 adapter->pdev = pdev;
13ba9c77 1009 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1010
1011 revision_id = pdev->revision;
1012 adapter->ahw.revision_id = revision_id;
1013
1014 err = nx_set_dma_mask(adapter, revision_id);
1015 if (err)
1016 goto err_out_free_netdev;
1017
3ce06a32 1018 rwlock_init(&adapter->adapter_lock);
d8b100c5 1019 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1020 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1021
97daee83
DP		 1022 err = netxen_setup_pci_map(adapter);
1023 if (err)
6c80b18d 1024 goto err_out_free_netdev;
3d396eb1 1025
2d1a3bbd 1026 /* This will be reset for mezz cards */
3176ff3e 1027 adapter->portnum = pci_func_id;
200eef20 1028 adapter->rx_csum = 1;
623621b0 1029 adapter->mc_enabled = 0;
83821a07 1030 if (NX_IS_REVISION_P3(revision_id))
2956640d 1031 adapter->max_mc_count = 38;
83821a07 1032 else
2956640d 1033 adapter->max_mc_count = 16;
3176ff3e 1034
1abd266f 1035 netdev->netdev_ops = &netxen_netdev_ops;
05aaa02d 1036 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 1037
1038 netxen_nic_change_mtu(netdev, netdev->mtu);
1039
1040 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1abd266f 1041
cdff1036 1042 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
a92e9e65 1043 netdev->features |= (NETIF_F_GRO);
cdff1036
DP		 1044 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1045
cd1f8160 1046 if (NX_IS_REVISION_P3(revision_id)) {
cdff1036
DP		 1047 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1048 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
cd1f8160 1049 }
3176ff3e 1050
cdff1036 1051 if (adapter->pci_using_dac) {
3176ff3e 1052 netdev->features |= NETIF_F_HIGHDMA;
cdff1036
DP		 1053 netdev->vlan_features |= NETIF_F_HIGHDMA;
1054 }
3176ff3e 1055
dcd56fdb
DP		 1056 if (netxen_nic_get_board_info(adapter) != 0) {
1057 printk("%s: Error getting board config info.\n",
2956640d 1058 netxen_nic_driver_name);
dcd56fdb
DP		 1059 err = -EIO;
1060 goto err_out_iounmap;
1061 }
6c80b18d 1062
6c80b18d
MT		 1063 netxen_initialize_adapter_ops(adapter);
1064
13ba9c77 1065 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1066 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1067 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1068 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1069 if (pci_func_id >= 2)
13ba9c77 1070 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1071 break;
1072 default:
1073 break;
1074 }
13ba9c77 1075
f7185c71 1076 err = netxen_start_firmware(adapter, 1);
0b72e659
DP		 1077 if (err)
1078 goto err_out_iounmap;
3d396eb1 1079 /*
6c80b18d 1080 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1081 */
dcd56fdb 1082 adapter->physical_port = adapter->portnum;
044fad0d 1083 if (adapter->fw_major < 4) {
f98a9f69 1084 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1085 if (i != 0x55555555)
1086 adapter->physical_port = i;
1087 }
6c80b18d 1088
438627c7 1089 netxen_check_options(adapter);
2956640d 1090
97daee83 1091 netxen_setup_intr(adapter);
2956640d 1092
d8b100c5
DP		 1093 netdev->irq = adapter->msix_entries[0].vector;
1094
71dcddbd
DP		 1095 if (netxen_napi_add(adapter, netdev))
1096 goto err_out_disable_msi;
2956640d 1097
2956640d 1098 init_timer(&adapter->watchdog_timer);
2956640d
DP		 1099 adapter->watchdog_timer.function = &netxen_watchdog;
1100 adapter->watchdog_timer.data = (unsigned long)adapter;
1101 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1102 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1103
9dc28efe
DP		 1104 err = netxen_read_mac_addr(adapter);
1105 if (err)
1106 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 1107
3176ff3e
MT		 1108 netif_carrier_off(netdev);
1109 netif_stop_queue(netdev);
1110
6c80b18d
MT		 1111 if ((err = register_netdev(netdev))) {
1112 printk(KERN_ERR "%s: register_netdev failed port #%d"
1113 " aborting\n", netxen_nic_driver_name,
1114 adapter->portnum);
1115 err = -EIO;
2956640d 1116 goto err_out_disable_msi;
6c80b18d
MT		 1117 }
1118
1119 pci_set_drvdata(pdev, adapter);
3d396eb1 1120
1e2d0059 1121 switch (adapter->ahw.port_type) {
2956640d
DP		 1122 case NETXEN_NIC_GBE:
1123 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1124 adapter->netdev->name);
1125 break;
1126 case NETXEN_NIC_XGBE:
1127 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1128 adapter->netdev->name);
1129 break;
3d396eb1 1130 }
3d396eb1 1131
2956640d
DP		 1132 return 0;
1133
1134err_out_disable_msi:
97daee83 1135 netxen_teardown_intr(adapter);
6c80b18d 1136
0b72e659 1137 netxen_free_adapter_offload(adapter);
3d396eb1 1138
2956640d 1139err_out_iounmap:
97daee83 1140 netxen_cleanup_pci_map(adapter);
cb8011ad 1141
6c80b18d
MT		 1142err_out_free_netdev:
1143 free_netdev(netdev);
1144
1145err_out_free_res:
3d396eb1 1146 pci_release_regions(pdev);
6c80b18d
MT		 1147
1148err_out_disable_pdev:
2956640d 1149 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1150 pci_disable_device(pdev);
1151 return err;
1152}
1153
1154static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1155{
1156 struct netxen_adapter *adapter;
3176ff3e 1157 struct net_device *netdev;
3d396eb1 1158
6c80b18d 1159 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1160 if (adapter == NULL)
1161 return;
1162
6c80b18d
MT		 1163 netdev = adapter->netdev;
1164
96acb6eb
DP		 1165 unregister_netdev(netdev);
1166
96acb6eb 1167 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1 1168 netxen_nic_detach(adapter);
96acb6eb 1169 }
3d396eb1 1170
439b454e
DP		 1171 if (adapter->portnum == 0)
1172 netxen_free_adapter_offload(adapter);
96acb6eb 1173
97daee83 1174 netxen_teardown_intr(adapter);
71dcddbd 1175 netxen_free_sds_rings(&adapter->recv_ctx);
3052246c 1176
97daee83 1177 netxen_cleanup_pci_map(adapter);
595e3fb8 1178
f7185c71
DP		 1179 netxen_release_firmware(adapter);
1180
595e3fb8 1181 pci_release_regions(pdev);
3052246c 1182 pci_disable_device(pdev);
595e3fb8
MT		 1183 pci_set_drvdata(pdev, NULL);
1184
6c80b18d 1185 free_netdev(netdev);
3d396eb1
AK		 1186}
1187
01542cd1 1188#ifdef CONFIG_PM
0b72e659
DP		 1189static int
1190netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1191{
1192
1193 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1194 struct net_device *netdev = adapter->netdev;
1195
1196 netif_device_detach(netdev);
1197
1198 if (netif_running(netdev))
1199 netxen_nic_down(adapter, netdev);
1200
1201 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1202 netxen_nic_detach(adapter);
1203
1204 pci_save_state(pdev);
1205
1206 if (netxen_nic_wol_supported(adapter)) {
1207 pci_enable_wake(pdev, PCI_D3cold, 1);
1208 pci_enable_wake(pdev, PCI_D3hot, 1);
1209 }
1210
1211 pci_disable_device(pdev);
1212 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1213
1214 return 0;
1215}
1216
1217static int
1218netxen_nic_resume(struct pci_dev *pdev)
1219{
1220 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1221 struct net_device *netdev = adapter->netdev;
1222 int err;
1223
1224 pci_set_power_state(pdev, PCI_D0);
1225 pci_restore_state(pdev);
1226
1227 err = pci_enable_device(pdev);
1228 if (err)
1229 return err;
1230
1231 adapter->curr_window = 255;
1232
f7185c71 1233 err = netxen_start_firmware(adapter, 0);
0b72e659
DP		 1234 if (err) {
1235 dev_err(&pdev->dev, "failed to start firmware\n");
1236 return err;
1237 }
1238
1239 if (netif_running(netdev)) {
1240 err = netxen_nic_attach(adapter);
1241 if (err)
1242 return err;
1243
1244 err = netxen_nic_up(adapter, netdev);
1245 if (err)
1246 return err;
1247
1248 netif_device_attach(netdev);
1249 }
1250
1251 return 0;
1252}
01542cd1 1253#endif
0b72e659 1254
3d396eb1
AK		 1255static int netxen_nic_open(struct net_device *netdev)
1256{
4cf1653a 1257 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1258 int err = 0;
3d396eb1 1259
dcd56fdb
DP		 1260 if (adapter->driver_mismatch)
1261 return -EIO;
1262
3d396eb1 1263 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1
DP		 1264 err = netxen_nic_attach(adapter);
1265 if (err)
3d396eb1 1266 return err;
ed25ffa1 1267 }
2956640d 1268
9f5bc7f1
DP		 1269 err = netxen_nic_up(adapter, netdev);
1270 if (err)
1271 goto err_out;
05aaa02d 1272
dcd56fdb 1273 netif_start_queue(netdev);
3d396eb1
AK		 1274
1275 return 0;
2956640d 1276
9f5bc7f1
DP		 1277err_out:
1278 netxen_nic_detach(adapter);
2956640d 1279 return err;
3d396eb1
AK		 1280}
1281
1282/*
1283 * netxen_nic_close - Disables a network interface entry point
1284 */
1285static int netxen_nic_close(struct net_device *netdev)
1286{
3176ff3e 1287 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1288
9f5bc7f1 1289 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1290 return 0;
1291}
1292
391587c3 1293static bool netxen_tso_check(struct net_device *netdev,
cd1f8160
DP		 1294 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1295{
391587c3
DP		 1296 bool tso = false;
1297 u8 opcode = TX_ETHER_PKT;
cdff1036
DP		 1298 __be16 protocol = skb->protocol;
1299 u16 flags = 0;
1300
09640e63 1301 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
cdff1036
DP		 1302 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1303 protocol = vh->h_vlan_encapsulated_proto;
1304 flags = FLAGS_VLAN_TAGGED;
1305 }
cd1f8160 1306
391587c3
DP		 1307 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1308 skb_shinfo(skb)->gso_size > 0) {
1309
1310 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1311 desc->total_hdr_length =
1312 skb_transport_offset(skb) + tcp_hdrlen(skb);
1313
09640e63 1314 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3
DP		 1315 TX_TCP_LSO6 : TX_TCP_LSO;
1316 tso = true;
cd1f8160
DP		 1317
1318 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1319 u8 l4proto;
1320
09640e63 1321 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1322 l4proto = ip_hdr(skb)->protocol;
1323
1324 if (l4proto == IPPROTO_TCP)
1325 opcode = TX_TCP_PKT;
1326 else if(l4proto == IPPROTO_UDP)
1327 opcode = TX_UDP_PKT;
09640e63 1328 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1329 l4proto = ipv6_hdr(skb)->nexthdr;
1330
1331 if (l4proto == IPPROTO_TCP)
1332 opcode = TX_TCPV6_PKT;
1333 else if(l4proto == IPPROTO_UDP)
1334 opcode = TX_UDPV6_PKT;
1335 }
cd1f8160
DP		 1336 }
1337 desc->tcp_hdr_offset = skb_transport_offset(skb);
1338 desc->ip_hdr_offset = skb_network_offset(skb);
cdff1036 1339 netxen_set_tx_flags_opcode(desc, flags, opcode);
391587c3 1340 return tso;
cd1f8160
DP		 1341}
1342
6f703406
DP		 1343static void
1344netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1345 struct netxen_cmd_buffer *pbuf, int last)
1346{
1347 int k;
1348 struct netxen_skb_frag *buffrag;
1349
1350 buffrag = &pbuf->frag_array[0];
1351 pci_unmap_single(pdev, buffrag->dma,
1352 buffrag->length, PCI_DMA_TODEVICE);
1353
1354 for (k = 1; k < last; k++) {
1355 buffrag = &pbuf->frag_array[k];
1356 pci_unmap_page(pdev, buffrag->dma,
1357 buffrag->length, PCI_DMA_TODEVICE);
1358 }
1359}
1360
d32cc3d2
DP		 1361static inline void
1362netxen_clear_cmddesc(u64 *desc)
1363{
1364 int i;
1365 for (i = 0; i < 8; i++)
1366 desc[i] = 0ULL;
1367}
1368
1369static int
1370netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1371{
3176ff3e 1372 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1373 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
3d396eb1 1374 unsigned int first_seg_len = skb->len - skb->data_len;
391587c3 1375 struct netxen_cmd_buffer *pbuf;
3d396eb1 1376 struct netxen_skb_frag *buffrag;
391587c3 1377 struct cmd_desc_type0 *hwdesc;
6f703406
DP		 1378 struct pci_dev *pdev = adapter->pdev;
1379 dma_addr_t temp_dma;
391587c3 1380 int i, k;
3d396eb1 1381
cb2107be 1382 u32 producer;
391587c3 1383 int frag_count, no_of_desc;
d877f1e3 1384 u32 num_txd = tx_ring->num_desc;
391587c3 1385 bool is_tso = false;
3d396eb1 1386
3d396eb1
AK		 1387 frag_count = skb_shinfo(skb)->nr_frags + 1;
1388
d877f1e3 1389 /* 4 fragments per cmd des */
3d396eb1 1390 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1391
cb2107be 1392 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
ba53e6b4 1393 netif_stop_queue(netdev);
ba53e6b4 1394 return NETDEV_TX_BUSY;
53a01e00 1395 }
3d396eb1 1396
cb2107be
DP		 1397 producer = tx_ring->producer;
1398
d877f1e3 1399 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1400 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1401 pbuf = &tx_ring->cmd_buf_arr[producer];
391587c3
DP		 1402
1403 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1404
3d396eb1 1405 pbuf->skb = skb;
3d396eb1 1406 pbuf->frag_count = frag_count;
3d396eb1 1407 buffrag = &pbuf->frag_array[0];
6f703406 1408 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
3d396eb1 1409 PCI_DMA_TODEVICE);
6f703406
DP		 1410 if (pci_dma_mapping_error(pdev, temp_dma))
1411 goto drop_packet;
1412
1413 buffrag->dma = temp_dma;
3d396eb1 1414 buffrag->length = first_seg_len;
391587c3
DP		 1415 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1416 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1417
d32cc3d2 1418 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
3d396eb1
AK		 1419 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1420
1421 for (i = 1, k = 1; i < frag_count; i++, k++) {
1422 struct skb_frag_struct *frag;
1423 int len, temp_len;
1424 unsigned long offset;
3d396eb1
AK		 1425
1426 /* move to next desc. if there is a need */
1427 if ((i & 0x3) == 0) {
1428 k = 0;
ba53e6b4 1429 producer = get_next_index(producer, num_txd);
d877f1e3 1430 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1431 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1432 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1433 pbuf->skb = NULL;
3d396eb1
AK		 1434 }
1435 frag = &skb_shinfo(skb)->frags[i - 1];
1436 len = frag->size;
1437 offset = frag->page_offset;
1438
1439 temp_len = len;
6f703406 1440 temp_dma = pci_map_page(pdev, frag->page, offset,
3d396eb1 1441 len, PCI_DMA_TODEVICE);
6f703406
DP		 1442 if (pci_dma_mapping_error(pdev, temp_dma)) {
1443 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1444 goto drop_packet;
1445 }
3d396eb1
AK		 1446
1447 buffrag++;
1448 buffrag->dma = temp_dma;
1449 buffrag->length = temp_len;
1450
d32cc3d2 1451 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
3d396eb1
AK		 1452 switch (k) {
1453 case 0:
3d396eb1
AK		 1454 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1455 break;
1456 case 1:
3d396eb1
AK		 1457 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1458 break;
1459 case 2:
3d396eb1
AK		 1460 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1461 break;
1462 case 3:
3d396eb1
AK		 1463 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1464 break;
1465 }
1466 frag++;
1467 }
ba53e6b4 1468 producer = get_next_index(producer, num_txd);
3d396eb1 1469
3d396eb1
AK		 1470 /* For LSO, we need to copy the MAC/IP/TCP headers into
1471 * the descriptor ring
1472 */
391587c3 1473 if (is_tso) {
3d396eb1 1474 int hdr_len, first_hdr_len, more_hdr;
391587c3 1475 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
ed25ffa1
AK		 1476 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1477 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1478 more_hdr = 1;
1479 } else {
1480 first_hdr_len = hdr_len;
1481 more_hdr = 0;
1482 }
1483 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
d877f1e3
DP		 1484 hwdesc = &tx_ring->desc_head[producer];
1485 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1486 pbuf->skb = NULL;
3d396eb1
AK		 1487
1488 /* copy the first 64 bytes */
ed25ffa1 1489 memcpy(((void *)hwdesc) + 2,
3d396eb1 1490 (void *)(skb->data), first_hdr_len);
ba53e6b4 1491 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1492
1493 if (more_hdr) {
d877f1e3
DP		 1494 hwdesc = &tx_ring->desc_head[producer];
1495 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1496 pbuf->skb = NULL;
3d396eb1
AK		 1497 /* copy the next 64 bytes - should be enough except
1498 * for pathological case
1499 */
d626f62b
ACM		 1500 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1501 hwdesc,
1502 (hdr_len -
1503 first_hdr_len));
ba53e6b4 1504 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1505 }
1506 }
6c80b18d 1507
d877f1e3 1508 tx_ring->producer = producer;
5dc16268 1509 adapter->stats.txbytes += skb->len;
6c80b18d 1510
cb2107be 1511 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1512
ba53e6b4 1513 adapter->stats.xmitcalled++;
3d396eb1 1514
3d396eb1 1515 return NETDEV_TX_OK;
6f703406
DP		 1516
1517drop_packet:
1518 adapter->stats.txdropped++;
1519 dev_kfree_skb_any(skb);
1520 return NETDEV_TX_OK;
3d396eb1
AK		 1521}
1522
a97342f9
DP		 1523static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1524{
1525 struct net_device *netdev = adapter->netdev;
1526 uint32_t temp, temp_state, temp_val;
1527 int rv = 0;
1528
f98a9f69 1529 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1530
1531 temp_state = nx_get_temp_state(temp);
1532 temp_val = nx_get_temp_val(temp);
1533
1534 if (temp_state == NX_TEMP_PANIC) {
1535 printk(KERN_ALERT
1536 "%s: Device temperature %d degrees C exceeds"
1537 " maximum allowed. Hardware has been shut down.\n",
e4135c2d
DP		 1538 netdev->name, temp_val);
1539
1540 netif_device_detach(netdev);
1541 netxen_nic_down(adapter, netdev);
1542 netxen_nic_detach(adapter);
a97342f9 1543
a97342f9
DP		 1544 rv = 1;
1545 } else if (temp_state == NX_TEMP_WARN) {
1546 if (adapter->temp == NX_TEMP_NORMAL) {
1547 printk(KERN_ALERT
1548 "%s: Device temperature %d degrees C "
1549 "exceeds operating range."
1550 " Immediate action needed.\n",
e4135c2d 1551 netdev->name, temp_val);
a97342f9
DP		 1552 }
1553 } else {
1554 if (adapter->temp == NX_TEMP_WARN) {
1555 printk(KERN_INFO
1556 "%s: Device temperature is now %d degrees C"
e4135c2d 1557 " in normal range.\n", netdev->name,
a97342f9
DP		 1558 temp_val);
1559 }
1560 }
1561 adapter->temp = temp_state;
1562 return rv;
1563}
1564
3bf26ce3 1565void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1566{
1567 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1568
1569 if (adapter->ahw.linkup && !linkup) {
1570 printk(KERN_INFO "%s: %s NIC Link is down\n",
1571 netxen_nic_driver_name, netdev->name);
1572 adapter->ahw.linkup = 0;
1573 if (netif_running(netdev)) {
1574 netif_carrier_off(netdev);
1575 netif_stop_queue(netdev);
1576 }
c7860a2a 1577
3bf26ce3
DP		 1578 if (!adapter->has_link_events)
1579 netxen_nic_set_link_parameters(adapter);
1580
a97342f9
DP		 1581 } else if (!adapter->ahw.linkup && linkup) {
1582 printk(KERN_INFO "%s: %s NIC Link is up\n",
1583 netxen_nic_driver_name, netdev->name);
1584 adapter->ahw.linkup = 1;
1585 if (netif_running(netdev)) {
1586 netif_carrier_on(netdev);
1587 netif_wake_queue(netdev);
1588 }
c7860a2a 1589
3bf26ce3
DP		 1590 if (!adapter->has_link_events)
1591 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1592 }
1593}
1594
3bf26ce3
DP		 1595static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1596{
1597 u32 val, port, linkup;
1598
1599 port = adapter->physical_port;
1600
1601 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1602 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1603 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1604 linkup = (val == XG_LINK_UP_P3);
1605 } else {
f98a9f69 1606 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1607 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1608 linkup = (val >> port) & 1;
1609 else {
1610 val = (val >> port*8) & 0xff;
1611 linkup = (val == XG_LINK_UP);
1612 }
1613 }
1614
1615 netxen_advert_link_change(adapter, linkup);
1616}
1617
3d396eb1
AK		 1618static void netxen_watchdog(unsigned long v)
1619{
1620 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1621
1622 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1623}
1624
a97342f9
DP		 1625void netxen_watchdog_task(struct work_struct *work)
1626{
1627 struct netxen_adapter *adapter =
1628 container_of(work, struct netxen_adapter, watchdog_task);
1629
e4135c2d 1630 if (netxen_nic_check_temp(adapter))
a97342f9
DP		 1631 return;
1632
3bf26ce3
DP		 1633 if (!adapter->has_link_events)
1634 netxen_nic_handle_phy_intr(adapter);
a97342f9 1635
922c4f2c
DP		 1636 if (netif_running(adapter->netdev))
1637 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1638}
1639
3d396eb1
AK		 1640static void netxen_tx_timeout(struct net_device *netdev)
1641{
3176ff3e
MT		 1642 struct netxen_adapter *adapter = (struct netxen_adapter *)
1643 netdev_priv(netdev);
1644 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1645}
1646
6d5aefb8 1647static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1648{
4790654c 1649 struct netxen_adapter *adapter =
3176ff3e 1650 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1651
b2af9cb0
DP		 1652 if (!netif_running(adapter->netdev))
1653 return;
1654
3d396eb1 1655 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1656 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1657
d8b100c5 1658 netxen_napi_disable(adapter);
ba53e6b4 1659
6c80b18d 1660 adapter->netdev->trans_start = jiffies;
ba53e6b4 1661
d8b100c5 1662 netxen_napi_enable(adapter);
6c80b18d 1663 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1664}
1665
a97342f9
DP		 1666struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1667{
1668 struct netxen_adapter *adapter = netdev_priv(netdev);
1669 struct net_device_stats *stats = &adapter->net_stats;
1670
1671 memset(stats, 0, sizeof(*stats));
1672
a97342f9 1673 stats->rx_packets = adapter->stats.no_rcv;
e98e3350 1674 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1675 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1676 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1677 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1678 stats->tx_dropped = adapter->stats.txdropped;
1679
1680 return stats;
1681}
1682
e4c93c81 1683static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1684{
d8b100c5
DP		 1685 struct nx_host_sds_ring *sds_ring = data;
1686 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1687 u32 status = 0;
1688
1689 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1690
1691 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1692 return IRQ_NONE;
e01872af 1693
d71e1be8
DP		 1694 if (adapter->ahw.revision_id >= NX_P3_B1) {
1695 /* check interrupt state machine, to be sure */
1696 status = adapter->pci_read_immediate(adapter,
1697 ISR_INT_STATE_REG);
1698 if (!ISR_LEGACY_INT_TRIGGERED(status))
1699 return IRQ_NONE;
1700
092bc571
DP		 1701 } else {
1702 unsigned long our_int = 0;
d71e1be8 1703
f98a9f69 1704 our_int = NXRD32(adapter, CRB_INT_VECTOR);
092bc571 1705
d71e1be8 1706 /* not our interrupt */
092bc571 1707 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1708 return IRQ_NONE;
1709
092bc571 1710 /* claim interrupt */
f98a9f69 1711 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1712 }
1713
092bc571
DP		 1714 /* clear interrupt */
1715 if (adapter->fw_major < 4)
d8b100c5 1716 netxen_nic_disable_int(sds_ring);
092bc571
DP		 1717
1718 adapter->pci_write_immediate(adapter,
1719 adapter->legacy_intr.tgt_status_reg,
1720 0xffffffff);
1721 /* read twice to ensure write is flushed */
1722 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1723 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1724
d8b100c5 1725 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1726
1727 return IRQ_HANDLED;
1728}
1729
e4c93c81 1730static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1731{
d8b100c5
DP		 1732 struct nx_host_sds_ring *sds_ring = data;
1733 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1734
092bc571
DP		 1735 /* clear interrupt */
1736 adapter->pci_write_immediate(adapter,
7a2469ce 1737 adapter->msi_tgt_status, 0xffffffff);
092bc571 1738
d8b100c5 1739 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1740 return IRQ_HANDLED;
1741}
1742
b3df68f8
DP		 1743static irqreturn_t netxen_msix_intr(int irq, void *data)
1744{
d8b100c5 1745 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1746
d8b100c5 1747 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1748 return IRQ_HANDLED;
1749}
1750
bea3348e 1751static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1752{
d8b100c5
DP		 1753 struct nx_host_sds_ring *sds_ring =
1754 container_of(napi, struct nx_host_sds_ring, napi);
1755
1756 struct netxen_adapter *adapter = sds_ring->adapter;
1757
05aaa02d 1758 int tx_complete;
bea3348e 1759 int work_done;
3d396eb1 1760
05aaa02d 1761 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1762
d8b100c5 1763 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 1764
05aaa02d 1765 if ((work_done < budget) && tx_complete) {
d8b100c5 1766 napi_complete(&sds_ring->napi);
b2af9cb0
DP		 1767 if (netif_running(adapter->netdev))
1768 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 1769 }
1770
bea3348e 1771 return work_done;
3d396eb1
AK		 1772}
1773
1774#ifdef CONFIG_NET_POLL_CONTROLLER
1775static void netxen_nic_poll_controller(struct net_device *netdev)
1776{
3176ff3e 1777 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1778 disable_irq(adapter->irq);
1494a814 1779 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1780 enable_irq(adapter->irq);
1781}
1782#endif
3d396eb1 1783
6598b169
DP		 1784#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
1785
1786static int
1787netxen_destip_supported(struct netxen_adapter *adapter)
1788{
1789 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1790 return 0;
1791
1792 if (adapter->ahw.cut_through)
1793 return 0;
1794
1795 return 1;
1796}
1797
1798static int netxen_netdev_event(struct notifier_block *this,
1799 unsigned long event, void *ptr)
1800{
1801 struct netxen_adapter *adapter;
1802 struct net_device *dev = (struct net_device *)ptr;
1803 struct in_device *indev;
1804
1805recheck:
1806 if (dev == NULL)
1807 goto done;
1808
1809 if (dev->priv_flags & IFF_802_1Q_VLAN) {
1810 dev = vlan_dev_real_dev(dev);
1811 goto recheck;
1812 }
1813
1814 if (!is_netxen_netdev(dev))
1815 goto done;
1816
1817 adapter = netdev_priv(dev);
1818
1819 if (!adapter || !netxen_destip_supported(adapter))
1820 goto done;
1821
1822 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1823 goto done;
1824
1825 indev = in_dev_get(dev);
1826 if (!indev)
1827 goto done;
1828
1829 for_ifa(indev) {
1830 switch (event) {
1831 case NETDEV_UP:
1832 netxen_config_ipaddr(adapter,
1833 ifa->ifa_address, NX_IP_UP);
1834 break;
1835 case NETDEV_DOWN:
1836 netxen_config_ipaddr(adapter,
1837 ifa->ifa_address, NX_IP_DOWN);
1838 break;
1839 default:
1840 break;
1841 }
1842 } endfor_ifa(indev);
1843
1844 in_dev_put(indev);
1845done:
1846 return NOTIFY_DONE;
1847}
1848
1849static int
1850netxen_inetaddr_event(struct notifier_block *this,
1851 unsigned long event, void *ptr)
1852{
1853 struct netxen_adapter *adapter;
1854 struct net_device *dev;
1855
1856 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
1857
1858 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
1859
1860recheck:
1861 if (dev == NULL || !netif_running(dev))
1862 goto done;
1863
1864 if (dev->priv_flags & IFF_802_1Q_VLAN) {
1865 dev = vlan_dev_real_dev(dev);
1866 goto recheck;
1867 }
1868
1869 if (!is_netxen_netdev(dev))
1870 goto done;
1871
1872 adapter = netdev_priv(dev);
1873
1874 if (!adapter || !netxen_destip_supported(adapter))
1875 goto done;
1876
1877 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1878 goto done;
1879
1880 switch (event) {
1881 case NETDEV_UP:
1882 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
1883 break;
1884 case NETDEV_DOWN:
1885 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
1886 break;
1887 default:
1888 break;
1889 }
1890
1891done:
1892 return NOTIFY_DONE;
1893}
1894
1895static struct notifier_block netxen_netdev_cb = {
1896 .notifier_call = netxen_netdev_event,
1897};
1898
1899static struct notifier_block netxen_inetaddr_cb = {
1900 .notifier_call = netxen_inetaddr_event,
1901};
1902
3d396eb1
AK		 1903static struct pci_driver netxen_driver = {
1904 .name = netxen_nic_driver_name,
1905 .id_table = netxen_pci_tbl,
1906 .probe = netxen_nic_probe,
0b72e659 1907 .remove = __devexit_p(netxen_nic_remove),
01542cd1 1908#ifdef CONFIG_PM
0b72e659
DP		 1909 .suspend = netxen_nic_suspend,
1910 .resume = netxen_nic_resume
01542cd1 1911#endif
3d396eb1
AK		 1912};
1913
1914/* Driver Registration on NetXen card */
1915
1916static int __init netxen_init_module(void)
1917{
ff4fbd43
DP		 1918 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1919
79ea13ce 1920 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1921 return -ENOMEM;
1922
6598b169
DP		 1923 register_netdevice_notifier(&netxen_netdev_cb);
1924 register_inetaddr_notifier(&netxen_inetaddr_cb);
1925
184231bd 1926 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1927}
1928
1929module_init(netxen_init_module);
1930
1931static void __exit netxen_exit_module(void)
1932{
3d396eb1 1933 pci_unregister_driver(&netxen_driver);
6598b169
DP		 1934
1935 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
1936 unregister_netdevice_notifier(&netxen_netdev_cb);
9de06610 1937 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1938}
1939
1940module_exit(netxen_exit_module);
Linux kernel - Deliverables
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