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netxen: sanitize function names
[mirror_ubuntu-artful-kernel.git] / drivers / net / netxen / netxen_nic_main.c
CommitLineData
3d396eb1 1/*
5d242f1c 2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3d396eb1 3 * All rights reserved.
80922fbc 4 *
3d396eb1
AK		 5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
80922fbc 9 *
3d396eb1
AK		 10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
80922fbc 14 *
3d396eb1
AK		 15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
80922fbc 19 *
3d396eb1
AK		 20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
80922fbc 22 *
3d396eb1
AK		 23 * Contact Information:
24 * info@netxen.com
5d242f1c
DP		 25 * NetXen Inc,
26 * 18922 Forge Drive
27 * Cupertino, CA 95014-0701
3d396eb1
AK		 28 *
29 */
30
cb8011ad 31#include <linux/vmalloc.h>
e98e3350 32#include <linux/interrupt.h>
3d396eb1
AK		 33#include "netxen_nic_hw.h"
34
35#include "netxen_nic.h"
3d396eb1 36#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>
1494a814 42
3d396eb1
AK		 43MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
44MODULE_LICENSE("GPL");
45MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
46
ceded32f 47char netxen_nic_driver_name[] = "netxen_nic";
3d396eb1 48static char netxen_nic_driver_string[] = "NetXen Network Driver version "
cb8011ad 49 NETXEN_NIC_LINUX_VERSIONID;
3d396eb1 50
2956640d
DP		 51static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
52
53/* Default to restricted 1G auto-neg mode */
54static int wol_port_mode = 5;
55
56static int use_msi = 1;
57
58static int use_msi_x = 1;
59
3d396eb1
AK		 60/* Local functions to NetXen NIC driver */
61static int __devinit netxen_nic_probe(struct pci_dev *pdev,
2956640d 62 const struct pci_device_id *ent);
3d396eb1
AK		 63static void __devexit netxen_nic_remove(struct pci_dev *pdev);
64static int netxen_nic_open(struct net_device *netdev);
65static int netxen_nic_close(struct net_device *netdev);
66static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
67static void netxen_tx_timeout(struct net_device *netdev);
6d5aefb8 68static void netxen_tx_timeout_task(struct work_struct *work);
3d396eb1 69static void netxen_watchdog(unsigned long);
bea3348e 70static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 71#ifdef CONFIG_NET_POLL_CONTROLLER
72static void netxen_nic_poll_controller(struct net_device *netdev);
73#endif
1494a814 74static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 75static irqreturn_t netxen_msi_intr(int irq, void *data);
b3df68f8 76static irqreturn_t netxen_msix_intr(int irq, void *data);
3d396eb1
AK		 77
78/* PCI Device ID Table */
70081ac5 79#define ENTRY(device) \
040dec3b 80 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 81 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
82
3d396eb1 83static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 84 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
85 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
86 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
87 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
88 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
91 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 92 {0,}
93};
94
95MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
96
b1555130
AB		 97static struct workqueue_struct *netxen_workq;
98#define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
99#define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
100
ed25ffa1
AK		 101static void netxen_watchdog(unsigned long);
102
7830b22c
DP		 103static uint32_t crb_cmd_producer[4] = {
104 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
105 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
106};
107
c9fc891f 108void
3ce06a32 109netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
d877f1e3 110 struct nx_host_tx_ring *tx_ring, u32 producer)
3176ff3e 111{
f98a9f69 112 NXWR32(adapter, tx_ring->crb_cmd_producer, producer);
3176ff3e
MT		 113}
114
7830b22c
DP		 115static uint32_t crb_cmd_consumer[4] = {
116 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
117 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
118};
119
3ce06a32
DP		 120static inline void
121netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
d877f1e3 122 struct nx_host_tx_ring *tx_ring, u32 consumer)
3176ff3e 123{
f98a9f69 124 NXWR32(adapter, tx_ring->crb_cmd_consumer, consumer);
3176ff3e
MT		 125}
126
2956640d 127static uint32_t msi_tgt_status[8] = {
443be796 128 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 129 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
130 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
131 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 132};
133
2956640d
DP		 134static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
135
d8b100c5 136static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 137{
d8b100c5
DP		 138 struct netxen_adapter *adapter = sds_ring->adapter;
139
f98a9f69 140 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 141}
142
d8b100c5 143static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 144{
d8b100c5
DP		 145 struct netxen_adapter *adapter = sds_ring->adapter;
146
f98a9f69 147 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 148
092bc571
DP		 149 if (!NETXEN_IS_MSI_FAMILY(adapter))
150 adapter->pci_write_immediate(adapter,
151 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
4638aef1
SH		 152}
153
71dcddbd
DP		 154static int
155netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
156{
157 int size = sizeof(struct nx_host_sds_ring) * count;
158
159 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
160
161 return (recv_ctx->sds_rings == NULL);
162}
163
d8b100c5 164static void
71dcddbd
DP		 165netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
166{
167 if (recv_ctx->sds_rings != NULL)
168 kfree(recv_ctx->sds_rings);
169}
170
171static int
d8b100c5
DP		 172netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
173{
174 int ring;
175 struct nx_host_sds_ring *sds_ring;
176 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
177
178 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
179 adapter->max_sds_rings = (num_online_cpus() >= 4) ? 4 : 2;
180 else
181 adapter->max_sds_rings = 1;
182
71dcddbd
DP		 183 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
184 return 1;
185
d8b100c5
DP		 186 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
187 sds_ring = &recv_ctx->sds_rings[ring];
188 netif_napi_add(netdev, &sds_ring->napi,
189 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
190 }
71dcddbd
DP		 191
192 return 0;
d8b100c5
DP		 193}
194
195static void
196netxen_napi_enable(struct netxen_adapter *adapter)
197{
198 int ring;
199 struct nx_host_sds_ring *sds_ring;
200 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
201
202 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
203 sds_ring = &recv_ctx->sds_rings[ring];
204 napi_enable(&sds_ring->napi);
205 netxen_nic_enable_int(sds_ring);
206 }
207}
208
209static void
210netxen_napi_disable(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 netxen_nic_disable_int(sds_ring);
219 napi_disable(&sds_ring->napi);
220 }
221}
222
2956640d
DP		 223static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
224{
225 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 226 uint64_t mask, cmask;
227
228 adapter->pci_using_dac = 0;
2956640d 229
6afd142f 230 mask = DMA_BIT_MASK(32);
2956640d
DP		 231 /*
232 * Consistent DMA mask is set to 32 bit because it cannot be set to
233 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
234 * come off this pool.
235 */
6afd142f 236 cmask = DMA_BIT_MASK(32);
1f434f63
DP		 237
238#ifndef CONFIG_IA64
239 if (revision_id >= NX_P3_B0)
6afd142f 240 mask = DMA_BIT_MASK(39);
1f434f63 241 else if (revision_id == NX_P2_C1)
6afd142f 242 mask = DMA_BIT_MASK(35);
1f434f63 243#endif
2956640d 244 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 245 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 246 adapter->pci_using_dac = 1;
247 return 0;
248 }
2956640d 249
1f434f63
DP		 250 return -EIO;
251}
252
253/* Update addressable range if firmware supports it */
254static int
255nx_update_dma_mask(struct netxen_adapter *adapter)
256{
257 int change, shift, err;
258 uint64_t mask, old_mask;
259 struct pci_dev *pdev = adapter->pdev;
260
261 change = 0;
262
f98a9f69 263 shift = NXRD32(adapter, CRB_DMA_SHIFT);
1f434f63
DP		 264 if (shift >= 32)
265 return 0;
266
267 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
268 change = 1;
269 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
270 change = 1;
271
272 if (change) {
273 old_mask = pdev->dma_mask;
274 mask = (1ULL<<(32+shift)) - 1;
275
276 err = pci_set_dma_mask(pdev, mask);
277 if (err)
278 return pci_set_dma_mask(pdev, old_mask);
2956640d
DP		 279 }
280
2956640d
DP		 281 return 0;
282}
283
284static void netxen_check_options(struct netxen_adapter *adapter)
285{
438627c7
DP		 286 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
287 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
288 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
289 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
2956640d 290
438627c7 291 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
c7860a2a 292 adapter->msix_supported = !!use_msi_x;
438627c7 293 else
2956640d 294 adapter->msix_supported = 0;
2956640d 295
438627c7
DP		 296 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
297 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
298 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
2956640d 299
2956640d
DP		 300 return;
301}
302
303static int
304netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
305{
27c915a4 306 u32 val, timeout;
2956640d
DP		 307
308 if (first_boot == 0x55555555) {
309 /* This is the first boot after power up */
f98a9f69 310 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 311
312 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
313 return 0;
2956640d
DP		 314
315 /* PCI bus master workaround */
f98a9f69 316 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 317 if (!(first_boot & 0x4)) {
318 first_boot |= 0x4;
f98a9f69
DP		 319 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
320 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 321 }
322
323 /* This is the first boot after power up */
f98a9f69 324 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 325 if (first_boot != 0x80000f) {
326 /* clear the register for future unloads/loads */
f98a9f69 327 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 328 return -EIO;
2956640d
DP		 329 }
330
27c915a4 331 /* Start P2 boot loader */
f98a9f69
DP		 332 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
333 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 334 timeout = 0;
335 do {
336 msleep(1);
f98a9f69 337 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 338
339 if (++timeout > 5000)
340 return -EIO;
341
342 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 343 }
27c915a4 344 return 0;
2956640d
DP		 345}
346
347static void netxen_set_port_mode(struct netxen_adapter *adapter)
348{
349 u32 val, data;
350
1e2d0059 351 val = adapter->ahw.board_type;
2956640d
DP		 352 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
353 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
354 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
355 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 356 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 357 } else if (port_mode == NETXEN_PORT_MODE_XG) {
358 data = NETXEN_PORT_MODE_XG;
f98a9f69 359 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 360 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
361 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 362 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 363 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
364 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 365 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 366 } else {
367 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 368 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 369 }
370
371 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
372 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
373 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
374 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
375 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
376 }
f98a9f69 377 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 378 }
379}
380
2956640d
DP		 381static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
382{
383 u32 control;
384 int pos;
385
386 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
387 if (pos) {
388 pci_read_config_dword(pdev, pos, &control);
389 if (enable)
390 control |= PCI_MSIX_FLAGS_ENABLE;
391 else
392 control = 0;
393 pci_write_config_dword(pdev, pos, control);
394 }
395}
396
397static void netxen_init_msix_entries(struct netxen_adapter *adapter)
398{
399 int i;
400
401 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
402 adapter->msix_entries[i].entry = i;
403}
404
9dc28efe
DP		 405static int
406netxen_read_mac_addr(struct netxen_adapter *adapter)
407{
408 int i;
409 unsigned char *p;
410 __le64 mac_addr;
9dc28efe
DP		 411 struct net_device *netdev = adapter->netdev;
412 struct pci_dev *pdev = adapter->pdev;
413
9dc28efe
DP		 414 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
415 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
416 return -EIO;
417 } else {
418 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
419 return -EIO;
420 }
421
422 p = (unsigned char *)&mac_addr;
423 for (i = 0; i < 6; i++)
424 netdev->dev_addr[i] = *(p + 5 - i);
425
426 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
427
428 /* set station address */
429
e174961c
JB		 430 if (!is_valid_ether_addr(netdev->perm_addr))
431 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
432 else
9dc28efe
DP		 433 adapter->macaddr_set(adapter, netdev->dev_addr);
434
435 return 0;
436}
437
1abd266f
SH		 438static void netxen_set_multicast_list(struct net_device *dev)
439{
440 struct netxen_adapter *adapter = netdev_priv(dev);
441
442 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
443 netxen_p3_nic_set_multi(dev);
444 else
445 netxen_p2_nic_set_multi(dev);
446}
447
448static const struct net_device_ops netxen_netdev_ops = {
449 .ndo_open = netxen_nic_open,
450 .ndo_stop = netxen_nic_close,
451 .ndo_start_xmit = netxen_nic_xmit_frame,
452 .ndo_get_stats = netxen_nic_get_stats,
453 .ndo_validate_addr = eth_validate_addr,
454 .ndo_set_multicast_list = netxen_set_multicast_list,
455 .ndo_set_mac_address = netxen_nic_set_mac,
456 .ndo_change_mtu = netxen_nic_change_mtu,
457 .ndo_tx_timeout = netxen_tx_timeout,
458#ifdef CONFIG_NET_POLL_CONTROLLER
459 .ndo_poll_controller = netxen_nic_poll_controller,
460#endif
461};
462
97daee83
DP		 463static void
464netxen_setup_intr(struct netxen_adapter *adapter)
465{
466 struct netxen_legacy_intr_set *legacy_intrp;
467 struct pci_dev *pdev = adapter->pdev;
468
469 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 470
471 if (adapter->ahw.revision_id >= NX_P3_B0)
472 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
473 else
474 legacy_intrp = &legacy_intr[0];
475 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
476 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
477 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
478 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
479
480 netxen_set_msix_bit(pdev, 0);
481
482 if (adapter->msix_supported) {
483
484 netxen_init_msix_entries(adapter);
485 if (pci_enable_msix(pdev, adapter->msix_entries,
486 MSIX_ENTRIES_PER_ADAPTER))
487 goto request_msi;
488
489 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
490 netxen_set_msix_bit(pdev, 1);
491 dev_info(&pdev->dev, "using msi-x interrupts\n");
492
493 } else {
494request_msi:
495 if (use_msi && !pci_enable_msi(pdev)) {
496 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
497 dev_info(&pdev->dev, "using msi interrupts\n");
498 } else
499 dev_info(&pdev->dev, "using legacy interrupts\n");
d8b100c5 500 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 501 }
502}
503
504static void
505netxen_teardown_intr(struct netxen_adapter *adapter)
506{
507 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
508 pci_disable_msix(adapter->pdev);
509 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
510 pci_disable_msi(adapter->pdev);
511}
512
513static void
514netxen_cleanup_pci_map(struct netxen_adapter *adapter)
515{
516 if (adapter->ahw.db_base != NULL)
517 iounmap(adapter->ahw.db_base);
518 if (adapter->ahw.pci_base0 != NULL)
519 iounmap(adapter->ahw.pci_base0);
520 if (adapter->ahw.pci_base1 != NULL)
521 iounmap(adapter->ahw.pci_base1);
522 if (adapter->ahw.pci_base2 != NULL)
523 iounmap(adapter->ahw.pci_base2);
524}
525
526static int
527netxen_setup_pci_map(struct netxen_adapter *adapter)
528{
529 void __iomem *mem_ptr0 = NULL;
530 void __iomem *mem_ptr1 = NULL;
531 void __iomem *mem_ptr2 = NULL;
532 void __iomem *db_ptr = NULL;
533
97daee83
DP		 534 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
535
536 struct pci_dev *pdev = adapter->pdev;
537 int pci_func = adapter->ahw.pci_func;
538
539 int err = 0;
540
541 /*
542 * Set the CRB window to invalid. If any register in window 0 is
543 * accessed it should set the window to 0 and then reset it to 1.
544 */
545 adapter->curr_window = 255;
546 adapter->ahw.qdr_sn_window = -1;
547 adapter->ahw.ddr_mn_window = -1;
548
549 /* remap phys address */
550 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
551 mem_len = pci_resource_len(pdev, 0);
552 pci_len0 = 0;
553
554 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
555 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
556 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
557 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
97daee83
DP		 558 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
559 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
560 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
561
562 /* 128 Meg of memory */
563 if (mem_len == NETXEN_PCI_128MB_SIZE) {
564 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
565 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
566 SECOND_PAGE_GROUP_SIZE);
567 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
568 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 569 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
570 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
571 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
572 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 573 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
574 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
575 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
576 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
577 adapter->pci_write_immediate =
578 netxen_nic_pci_write_immediate_2M;
97daee83
DP		 579 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
580 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
581 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
582
583 mem_ptr0 = pci_ioremap_bar(pdev, 0);
584 if (mem_ptr0 == NULL) {
585 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
586 return -EIO;
587 }
588 pci_len0 = mem_len;
97daee83
DP		 589
590 adapter->ahw.ddr_mn_window = 0;
591 adapter->ahw.qdr_sn_window = 0;
592
593 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
594 (pci_func * 0x20);
595 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
596 if (pci_func < 4)
597 adapter->ahw.ms_win_crb += (pci_func * 0x20);
598 else
599 adapter->ahw.ms_win_crb +=
600 0xA0 + ((pci_func - 4) * 0x10);
601 } else {
602 return -EIO;
603 }
604
605 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
606
607 adapter->ahw.pci_base0 = mem_ptr0;
608 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 609 adapter->ahw.pci_base1 = mem_ptr1;
610 adapter->ahw.pci_base2 = mem_ptr2;
611
612 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
613 goto skip_doorbell;
614
615 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
616 db_len = pci_resource_len(pdev, 4);
617
618 if (db_len == 0) {
619 printk(KERN_ERR "%s: doorbell is disabled\n",
620 netxen_nic_driver_name);
621 err = -EIO;
622 goto err_out;
623 }
624
625 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
626 if (!db_ptr) {
627 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
628 netxen_nic_driver_name);
629 err = -EIO;
630 goto err_out;
631 }
632
633skip_doorbell:
634 adapter->ahw.db_base = db_ptr;
635 adapter->ahw.db_len = db_len;
636 return 0;
637
638err_out:
639 netxen_cleanup_pci_map(adapter);
640 return err;
641}
642
ba599d4f
DP		 643static int
644netxen_start_firmware(struct netxen_adapter *adapter)
645{
646 int val, err, first_boot;
647 struct pci_dev *pdev = adapter->pdev;
648
0b72e659
DP		 649 int first_driver = 0;
650 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
651 if (adapter->ahw.pci_func == 0)
652 first_driver = 1;
653 } else {
654 if (adapter->portnum == 0)
655 first_driver = 1;
656 }
657
658 if (!first_driver)
659 return 0;
660
f98a9f69 661 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 662
663 err = netxen_check_hw_init(adapter, first_boot);
664 if (err) {
665 dev_err(&pdev->dev, "error in init HW init sequence\n");
666 return err;
667 }
668
ba599d4f 669 if (first_boot != 0x55555555) {
f98a9f69 670 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
ba599d4f
DP		 671 netxen_pinit_from_rom(adapter, 0);
672 msleep(1);
673 }
567c6c4e 674
f98a9f69 675 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 676 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
677 netxen_set_port_mode(adapter);
678
ba599d4f
DP		 679 netxen_load_firmware(adapter);
680
681 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
682
683 /* Initialize multicast addr pool owners */
684 val = 0x7654;
1e2d0059 685 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 686 val |= 0x0f000000;
f98a9f69 687 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 688
689 }
690
691 err = netxen_initialize_adapter_offload(adapter);
692 if (err)
693 return err;
694
695 /*
696 * Tell the hardware our version number.
697 */
698 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
699 | ((_NETXEN_NIC_LINUX_MINOR << 8))
700 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 701 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f
DP		 702
703 /* Handshake with the card before we register the devices. */
704 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
705 if (err) {
706 netxen_free_adapter_offload(adapter);
707 return err;
708 }
709
710 return 0;
711}
712
9f5bc7f1
DP		 713static int
714netxen_nic_request_irq(struct netxen_adapter *adapter)
715{
716 irq_handler_t handler;
d8b100c5
DP		 717 struct nx_host_sds_ring *sds_ring;
718 int err, ring;
719
9f5bc7f1
DP		 720 unsigned long flags = IRQF_SAMPLE_RANDOM;
721 struct net_device *netdev = adapter->netdev;
d8b100c5 722 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 723
9f5bc7f1
DP		 724 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
725 handler = netxen_msix_intr;
726 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
727 handler = netxen_msi_intr;
728 else {
729 flags |= IRQF_SHARED;
730 handler = netxen_intr;
731 }
732 adapter->irq = netdev->irq;
733
d8b100c5
DP		 734 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
735 sds_ring = &recv_ctx->sds_rings[ring];
736 sprintf(sds_ring->name, "%16s[%d]", netdev->name, ring);
737 err = request_irq(sds_ring->irq, handler,
738 flags, sds_ring->name, sds_ring);
739 if (err)
740 return err;
741 }
742
743 return 0;
744}
745
746static void
747netxen_nic_free_irq(struct netxen_adapter *adapter)
748{
749 int ring;
750 struct nx_host_sds_ring *sds_ring;
751
752 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
753
754 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
755 sds_ring = &recv_ctx->sds_rings[ring];
756 free_irq(sds_ring->irq, sds_ring);
757 }
9f5bc7f1
DP		 758}
759
760static int
761netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
762{
763 int err;
764
765 err = adapter->init_port(adapter, adapter->physical_port);
766 if (err) {
767 printk(KERN_ERR "%s: Failed to initialize port %d\n",
768 netxen_nic_driver_name, adapter->portnum);
769 return err;
770 }
771 adapter->macaddr_set(adapter, netdev->dev_addr);
772
773 netxen_nic_set_link_parameters(adapter);
774
775 netxen_set_multicast_list(netdev);
776 if (adapter->set_mtu)
777 adapter->set_mtu(adapter, netdev->mtu);
778
779 adapter->ahw.linkup = 0;
780 mod_timer(&adapter->watchdog_timer, jiffies);
781
d8b100c5
DP		 782 netxen_napi_enable(adapter);
783
784 if (adapter->max_sds_rings > 1)
785 netxen_config_rss(adapter, 1);
9f5bc7f1 786
3bf26ce3
DP		 787 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
788 netxen_linkevent_request(adapter, 1);
789
9f5bc7f1
DP		 790 return 0;
791}
792
793static void
794netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
795{
796 netif_carrier_off(netdev);
797 netif_stop_queue(netdev);
d8b100c5 798 netxen_napi_disable(adapter);
9f5bc7f1
DP		 799
800 if (adapter->stop_port)
801 adapter->stop_port(adapter);
802
9f5bc7f1
DP		 803 netxen_release_tx_buffers(adapter);
804
805 FLUSH_SCHEDULED_WORK();
806 del_timer_sync(&adapter->watchdog_timer);
807}
808
809
810static int
811netxen_nic_attach(struct netxen_adapter *adapter)
812{
813 struct net_device *netdev = adapter->netdev;
814 struct pci_dev *pdev = adapter->pdev;
becf46a0 815 int err, ring;
d8b100c5 816 struct nx_host_rds_ring *rds_ring;
d877f1e3 817 struct nx_host_tx_ring *tx_ring;
9f5bc7f1
DP		 818
819 err = netxen_init_firmware(adapter);
820 if (err != 0) {
821 printk(KERN_ERR "Failed to init firmware\n");
822 return -EIO;
823 }
824
825 if (adapter->fw_major < 4)
826 adapter->max_rds_rings = 3;
827 else
828 adapter->max_rds_rings = 2;
829
830 err = netxen_alloc_sw_resources(adapter);
831 if (err) {
832 printk(KERN_ERR "%s: Error in setting sw resources\n",
833 netdev->name);
834 return err;
835 }
836
837 netxen_nic_clear_stats(adapter);
838
839 err = netxen_alloc_hw_resources(adapter);
840 if (err) {
841 printk(KERN_ERR "%s: Error in setting hw resources\n",
842 netdev->name);
843 goto err_out_free_sw;
844 }
845
846 if (adapter->fw_major < 4) {
d877f1e3
DP		 847 tx_ring = &adapter->tx_ring;
848 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
849 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
9f5bc7f1 850
d877f1e3
DP		 851 netxen_nic_update_cmd_producer(adapter, tx_ring, 0);
852 netxen_nic_update_cmd_consumer(adapter, tx_ring, 0);
9f5bc7f1
DP		 853 }
854
d8b100c5
DP		 855 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
856 rds_ring = &adapter->recv_ctx.rds_rings[ring];
857 netxen_post_rx_buffers(adapter, ring, rds_ring);
858 }
9f5bc7f1
DP		 859
860 err = netxen_nic_request_irq(adapter);
861 if (err) {
862 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
863 netdev->name);
864 goto err_out_free_rxbuf;
865 }
866
867 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
868 return 0;
869
870err_out_free_rxbuf:
871 netxen_release_rx_buffers(adapter);
872 netxen_free_hw_resources(adapter);
873err_out_free_sw:
874 netxen_free_sw_resources(adapter);
875 return err;
876}
877
878static void
879netxen_nic_detach(struct netxen_adapter *adapter)
880{
d8b100c5 881 netxen_nic_free_irq(adapter);
9f5bc7f1
DP		 882
883 netxen_release_rx_buffers(adapter);
884 netxen_free_hw_resources(adapter);
885 netxen_free_sw_resources(adapter);
886
887 adapter->is_up = 0;
888}
889
3d396eb1
AK		 890static int __devinit
891netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
892{
893 struct net_device *netdev = NULL;
894 struct netxen_adapter *adapter = NULL;
2956640d 895 int i = 0, err;
3176ff3e 896 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 897 uint8_t revision_id;
3d396eb1 898
3176ff3e 899 if (pdev->class != 0x020000) {
dcd56fdb 900 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 901 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 902 return -ENODEV;
903 }
2956640d 904
11d89d63
DP		 905 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
906 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
907 "will not be enabled.\n",
908 NX_P3_A0, NX_P3_B1);
909 return -ENODEV;
910 }
911
3d396eb1
AK		 912 if ((err = pci_enable_device(pdev)))
913 return err;
2956640d 914
3d396eb1
AK		 915 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
916 err = -ENODEV;
917 goto err_out_disable_pdev;
918 }
919
920 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
921 goto err_out_disable_pdev;
922
923 pci_set_master(pdev);
3176ff3e
MT		 924
925 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
926 if(!netdev) {
927 printk(KERN_ERR"%s: Failed to allocate memory for the "
928 "device block.Check system memory resource"
929 " usage.\n", netxen_nic_driver_name);
930 goto err_out_free_res;
931 }
932
3176ff3e
MT		 933 SET_NETDEV_DEV(netdev, &pdev->dev);
934
4cf1653a 935 adapter = netdev_priv(netdev);
2956640d
DP		 936 adapter->netdev = netdev;
937 adapter->pdev = pdev;
13ba9c77 938 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 939
940 revision_id = pdev->revision;
941 adapter->ahw.revision_id = revision_id;
942
943 err = nx_set_dma_mask(adapter, revision_id);
944 if (err)
945 goto err_out_free_netdev;
946
3ce06a32 947 rwlock_init(&adapter->adapter_lock);
d8b100c5 948 spin_lock_init(&adapter->tx_clean_lock);
3ce06a32 949
97daee83
DP		 950 err = netxen_setup_pci_map(adapter);
951 if (err)
6c80b18d 952 goto err_out_free_netdev;
3d396eb1 953
2d1a3bbd 954 /* This will be reset for mezz cards */
3176ff3e 955 adapter->portnum = pci_func_id;
200eef20 956 adapter->rx_csum = 1;
623621b0 957 adapter->mc_enabled = 0;
83821a07 958 if (NX_IS_REVISION_P3(revision_id))
2956640d 959 adapter->max_mc_count = 38;
83821a07 960 else
2956640d 961 adapter->max_mc_count = 16;
3176ff3e 962
1abd266f 963 netdev->netdev_ops = &netxen_netdev_ops;
05aaa02d 964 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 965
966 netxen_nic_change_mtu(netdev, netdev->mtu);
967
968 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1abd266f 969
cdff1036
DP		 970 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
971 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
972
cd1f8160 973 if (NX_IS_REVISION_P3(revision_id)) {
cdff1036
DP		 974 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
975 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
cd1f8160 976 }
3176ff3e 977
cdff1036 978 if (adapter->pci_using_dac) {
3176ff3e 979 netdev->features |= NETIF_F_HIGHDMA;
cdff1036
DP		 980 netdev->vlan_features |= NETIF_F_HIGHDMA;
981 }
3176ff3e 982
dcd56fdb
DP		 983 if (netxen_nic_get_board_info(adapter) != 0) {
984 printk("%s: Error getting board config info.\n",
2956640d 985 netxen_nic_driver_name);
dcd56fdb
DP		 986 err = -EIO;
987 goto err_out_iounmap;
988 }
6c80b18d 989
6c80b18d
MT		 990 netxen_initialize_adapter_ops(adapter);
991
13ba9c77 992 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 993 switch (adapter->ahw.board_type) {
dc515f2e
DP		 994 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
995 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
996 if (pci_func_id >= 2)
13ba9c77 997 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 998 break;
999 default:
1000 break;
1001 }
13ba9c77 1002
0b72e659
DP		 1003 err = netxen_start_firmware(adapter);
1004 if (err)
1005 goto err_out_iounmap;
2956640d 1006
1f434f63
DP		 1007 nx_update_dma_mask(adapter);
1008
1e2d0059 1009 netxen_nic_get_firmware_info(adapter);
d9e651bc 1010
3d396eb1 1011 /*
6c80b18d 1012 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1013 */
dcd56fdb 1014 adapter->physical_port = adapter->portnum;
044fad0d 1015 if (adapter->fw_major < 4) {
f98a9f69 1016 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1017 if (i != 0x55555555)
1018 adapter->physical_port = i;
1019 }
6c80b18d 1020
438627c7 1021 netxen_check_options(adapter);
2956640d 1022
97daee83 1023 netxen_setup_intr(adapter);
2956640d 1024
d8b100c5
DP		 1025 netdev->irq = adapter->msix_entries[0].vector;
1026
71dcddbd
DP		 1027 if (netxen_napi_add(adapter, netdev))
1028 goto err_out_disable_msi;
2956640d 1029
2956640d 1030 init_timer(&adapter->watchdog_timer);
2956640d
DP		 1031 adapter->watchdog_timer.function = &netxen_watchdog;
1032 adapter->watchdog_timer.data = (unsigned long)adapter;
1033 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1034 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1035
9dc28efe
DP		 1036 err = netxen_read_mac_addr(adapter);
1037 if (err)
1038 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 1039
3176ff3e
MT		 1040 netif_carrier_off(netdev);
1041 netif_stop_queue(netdev);
1042
6c80b18d
MT		 1043 if ((err = register_netdev(netdev))) {
1044 printk(KERN_ERR "%s: register_netdev failed port #%d"
1045 " aborting\n", netxen_nic_driver_name,
1046 adapter->portnum);
1047 err = -EIO;
2956640d 1048 goto err_out_disable_msi;
6c80b18d
MT		 1049 }
1050
1051 pci_set_drvdata(pdev, adapter);
3d396eb1 1052
1e2d0059 1053 switch (adapter->ahw.port_type) {
2956640d
DP		 1054 case NETXEN_NIC_GBE:
1055 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1056 adapter->netdev->name);
1057 break;
1058 case NETXEN_NIC_XGBE:
1059 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1060 adapter->netdev->name);
1061 break;
3d396eb1 1062 }
3d396eb1 1063
2956640d
DP		 1064 return 0;
1065
1066err_out_disable_msi:
97daee83 1067 netxen_teardown_intr(adapter);
6c80b18d 1068
0b72e659 1069 netxen_free_adapter_offload(adapter);
3d396eb1 1070
2956640d 1071err_out_iounmap:
97daee83 1072 netxen_cleanup_pci_map(adapter);
cb8011ad 1073
6c80b18d
MT		 1074err_out_free_netdev:
1075 free_netdev(netdev);
1076
1077err_out_free_res:
3d396eb1 1078 pci_release_regions(pdev);
6c80b18d
MT		 1079
1080err_out_disable_pdev:
2956640d 1081 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1082 pci_disable_device(pdev);
1083 return err;
1084}
1085
1086static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1087{
1088 struct netxen_adapter *adapter;
3176ff3e 1089 struct net_device *netdev;
3d396eb1 1090
6c80b18d 1091 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1092 if (adapter == NULL)
1093 return;
1094
6c80b18d
MT		 1095 netdev = adapter->netdev;
1096
96acb6eb
DP		 1097 unregister_netdev(netdev);
1098
96acb6eb 1099 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1 1100 netxen_nic_detach(adapter);
06e9d9f9
DP		 1101
1102 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1103 netxen_p3_free_mac_list(adapter);
96acb6eb 1104 }
3d396eb1 1105
439b454e
DP		 1106 if (adapter->portnum == 0)
1107 netxen_free_adapter_offload(adapter);
96acb6eb 1108
97daee83 1109 netxen_teardown_intr(adapter);
71dcddbd 1110 netxen_free_sds_rings(&adapter->recv_ctx);
3052246c 1111
97daee83 1112 netxen_cleanup_pci_map(adapter);
595e3fb8
MT		 1113
1114 pci_release_regions(pdev);
3052246c 1115 pci_disable_device(pdev);
595e3fb8
MT		 1116 pci_set_drvdata(pdev, NULL);
1117
6c80b18d 1118 free_netdev(netdev);
3d396eb1
AK		 1119}
1120
0b72e659
DP		 1121static int
1122netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1123{
1124
1125 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1126 struct net_device *netdev = adapter->netdev;
1127
1128 netif_device_detach(netdev);
1129
1130 if (netif_running(netdev))
1131 netxen_nic_down(adapter, netdev);
1132
1133 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1134 netxen_nic_detach(adapter);
1135
1136 pci_save_state(pdev);
1137
1138 if (netxen_nic_wol_supported(adapter)) {
1139 pci_enable_wake(pdev, PCI_D3cold, 1);
1140 pci_enable_wake(pdev, PCI_D3hot, 1);
1141 }
1142
1143 pci_disable_device(pdev);
1144 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1145
1146 return 0;
1147}
1148
1149static int
1150netxen_nic_resume(struct pci_dev *pdev)
1151{
1152 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1153 struct net_device *netdev = adapter->netdev;
1154 int err;
1155
1156 pci_set_power_state(pdev, PCI_D0);
1157 pci_restore_state(pdev);
1158
1159 err = pci_enable_device(pdev);
1160 if (err)
1161 return err;
1162
1163 adapter->curr_window = 255;
1164
1165 err = netxen_start_firmware(adapter);
1166 if (err) {
1167 dev_err(&pdev->dev, "failed to start firmware\n");
1168 return err;
1169 }
1170
1171 if (netif_running(netdev)) {
1172 err = netxen_nic_attach(adapter);
1173 if (err)
1174 return err;
1175
1176 err = netxen_nic_up(adapter, netdev);
1177 if (err)
1178 return err;
1179
1180 netif_device_attach(netdev);
1181 }
1182
1183 return 0;
1184}
1185
3d396eb1
AK		 1186static int netxen_nic_open(struct net_device *netdev)
1187{
4cf1653a 1188 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1189 int err = 0;
3d396eb1 1190
dcd56fdb
DP		 1191 if (adapter->driver_mismatch)
1192 return -EIO;
1193
3d396eb1 1194 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1
DP		 1195 err = netxen_nic_attach(adapter);
1196 if (err)
3d396eb1 1197 return err;
ed25ffa1 1198 }
2956640d 1199
9f5bc7f1
DP		 1200 err = netxen_nic_up(adapter, netdev);
1201 if (err)
1202 goto err_out;
05aaa02d 1203
dcd56fdb 1204 netif_start_queue(netdev);
3d396eb1
AK		 1205
1206 return 0;
2956640d 1207
9f5bc7f1
DP		 1208err_out:
1209 netxen_nic_detach(adapter);
2956640d 1210 return err;
3d396eb1
AK		 1211}
1212
1213/*
1214 * netxen_nic_close - Disables a network interface entry point
1215 */
1216static int netxen_nic_close(struct net_device *netdev)
1217{
3176ff3e 1218 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1219
9f5bc7f1 1220 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1221 return 0;
1222}
1223
391587c3 1224static bool netxen_tso_check(struct net_device *netdev,
cd1f8160
DP		 1225 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1226{
391587c3
DP		 1227 bool tso = false;
1228 u8 opcode = TX_ETHER_PKT;
cdff1036
DP		 1229 __be16 protocol = skb->protocol;
1230 u16 flags = 0;
1231
09640e63 1232 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
cdff1036
DP		 1233 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1234 protocol = vh->h_vlan_encapsulated_proto;
1235 flags = FLAGS_VLAN_TAGGED;
1236 }
cd1f8160 1237
391587c3
DP		 1238 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1239 skb_shinfo(skb)->gso_size > 0) {
1240
1241 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1242 desc->total_hdr_length =
1243 skb_transport_offset(skb) + tcp_hdrlen(skb);
1244
09640e63 1245 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3
DP		 1246 TX_TCP_LSO6 : TX_TCP_LSO;
1247 tso = true;
cd1f8160
DP		 1248
1249 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1250 u8 l4proto;
1251
09640e63 1252 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1253 l4proto = ip_hdr(skb)->protocol;
1254
1255 if (l4proto == IPPROTO_TCP)
1256 opcode = TX_TCP_PKT;
1257 else if(l4proto == IPPROTO_UDP)
1258 opcode = TX_UDP_PKT;
09640e63 1259 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1260 l4proto = ipv6_hdr(skb)->nexthdr;
1261
1262 if (l4proto == IPPROTO_TCP)
1263 opcode = TX_TCPV6_PKT;
1264 else if(l4proto == IPPROTO_UDP)
1265 opcode = TX_UDPV6_PKT;
1266 }
cd1f8160
DP		 1267 }
1268 desc->tcp_hdr_offset = skb_transport_offset(skb);
1269 desc->ip_hdr_offset = skb_network_offset(skb);
cdff1036 1270 netxen_set_tx_flags_opcode(desc, flags, opcode);
391587c3 1271 return tso;
cd1f8160
DP		 1272}
1273
6f703406
DP		 1274static void
1275netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1276 struct netxen_cmd_buffer *pbuf, int last)
1277{
1278 int k;
1279 struct netxen_skb_frag *buffrag;
1280
1281 buffrag = &pbuf->frag_array[0];
1282 pci_unmap_single(pdev, buffrag->dma,
1283 buffrag->length, PCI_DMA_TODEVICE);
1284
1285 for (k = 1; k < last; k++) {
1286 buffrag = &pbuf->frag_array[k];
1287 pci_unmap_page(pdev, buffrag->dma,
1288 buffrag->length, PCI_DMA_TODEVICE);
1289 }
1290}
1291
d32cc3d2
DP		 1292static inline void
1293netxen_clear_cmddesc(u64 *desc)
1294{
1295 int i;
1296 for (i = 0; i < 8; i++)
1297 desc[i] = 0ULL;
1298}
1299
1300static int
1301netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1302{
3176ff3e 1303 struct netxen_adapter *adapter = netdev_priv(netdev);
d877f1e3 1304 struct nx_host_tx_ring *tx_ring = &adapter->tx_ring;
3d396eb1 1305 unsigned int first_seg_len = skb->len - skb->data_len;
391587c3 1306 struct netxen_cmd_buffer *pbuf;
3d396eb1 1307 struct netxen_skb_frag *buffrag;
391587c3 1308 struct cmd_desc_type0 *hwdesc;
6f703406
DP		 1309 struct pci_dev *pdev = adapter->pdev;
1310 dma_addr_t temp_dma;
391587c3 1311 int i, k;
3d396eb1 1312
ba53e6b4 1313 u32 producer, consumer;
391587c3 1314 int frag_count, no_of_desc;
d877f1e3 1315 u32 num_txd = tx_ring->num_desc;
391587c3 1316 bool is_tso = false;
3d396eb1 1317
3d396eb1
AK		 1318 frag_count = skb_shinfo(skb)->nr_frags + 1;
1319
d877f1e3 1320 /* 4 fragments per cmd des */
3d396eb1 1321 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1322
d877f1e3 1323 producer = tx_ring->producer;
ba53e6b4 1324 smp_mb();
d877f1e3 1325 consumer = tx_ring->sw_consumer;
ba53e6b4
DP		 1326 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1327 netif_stop_queue(netdev);
1328 smp_mb();
1329 return NETDEV_TX_BUSY;
53a01e00 1330 }
3d396eb1 1331
d877f1e3 1332 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1333 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1334 pbuf = &tx_ring->cmd_buf_arr[producer];
391587c3
DP		 1335
1336 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1337
3d396eb1 1338 pbuf->skb = skb;
3d396eb1 1339 pbuf->frag_count = frag_count;
3d396eb1 1340 buffrag = &pbuf->frag_array[0];
6f703406 1341 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
3d396eb1 1342 PCI_DMA_TODEVICE);
6f703406
DP		 1343 if (pci_dma_mapping_error(pdev, temp_dma))
1344 goto drop_packet;
1345
1346 buffrag->dma = temp_dma;
3d396eb1 1347 buffrag->length = first_seg_len;
391587c3
DP		 1348 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1349 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1350
d32cc3d2 1351 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
3d396eb1
AK		 1352 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1353
1354 for (i = 1, k = 1; i < frag_count; i++, k++) {
1355 struct skb_frag_struct *frag;
1356 int len, temp_len;
1357 unsigned long offset;
3d396eb1
AK		 1358
1359 /* move to next desc. if there is a need */
1360 if ((i & 0x3) == 0) {
1361 k = 0;
ba53e6b4 1362 producer = get_next_index(producer, num_txd);
d877f1e3 1363 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1364 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1365 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1366 pbuf->skb = NULL;
3d396eb1
AK		 1367 }
1368 frag = &skb_shinfo(skb)->frags[i - 1];
1369 len = frag->size;
1370 offset = frag->page_offset;
1371
1372 temp_len = len;
6f703406 1373 temp_dma = pci_map_page(pdev, frag->page, offset,
3d396eb1 1374 len, PCI_DMA_TODEVICE);
6f703406
DP		 1375 if (pci_dma_mapping_error(pdev, temp_dma)) {
1376 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1377 goto drop_packet;
1378 }
3d396eb1
AK		 1379
1380 buffrag++;
1381 buffrag->dma = temp_dma;
1382 buffrag->length = temp_len;
1383
d32cc3d2 1384 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
3d396eb1
AK		 1385 switch (k) {
1386 case 0:
3d396eb1
AK		 1387 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1388 break;
1389 case 1:
3d396eb1
AK		 1390 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1391 break;
1392 case 2:
3d396eb1
AK		 1393 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1394 break;
1395 case 3:
3d396eb1
AK		 1396 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1397 break;
1398 }
1399 frag++;
1400 }
ba53e6b4 1401 producer = get_next_index(producer, num_txd);
3d396eb1 1402
3d396eb1
AK		 1403 /* For LSO, we need to copy the MAC/IP/TCP headers into
1404 * the descriptor ring
1405 */
391587c3 1406 if (is_tso) {
3d396eb1 1407 int hdr_len, first_hdr_len, more_hdr;
391587c3 1408 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
ed25ffa1
AK		 1409 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1410 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1411 more_hdr = 1;
1412 } else {
1413 first_hdr_len = hdr_len;
1414 more_hdr = 0;
1415 }
1416 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
d877f1e3
DP		 1417 hwdesc = &tx_ring->desc_head[producer];
1418 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1419 pbuf->skb = NULL;
3d396eb1
AK		 1420
1421 /* copy the first 64 bytes */
ed25ffa1 1422 memcpy(((void *)hwdesc) + 2,
3d396eb1 1423 (void *)(skb->data), first_hdr_len);
ba53e6b4 1424 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1425
1426 if (more_hdr) {
d877f1e3
DP		 1427 hwdesc = &tx_ring->desc_head[producer];
1428 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1429 pbuf->skb = NULL;
3d396eb1
AK		 1430 /* copy the next 64 bytes - should be enough except
1431 * for pathological case
1432 */
d626f62b
ACM		 1433 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1434 hwdesc,
1435 (hdr_len -
1436 first_hdr_len));
ba53e6b4 1437 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1438 }
1439 }
6c80b18d 1440
d877f1e3 1441 tx_ring->producer = producer;
5dc16268 1442 adapter->stats.txbytes += skb->len;
6c80b18d 1443
d877f1e3 1444 netxen_nic_update_cmd_producer(adapter, tx_ring, producer);
3d396eb1 1445
ba53e6b4 1446 adapter->stats.xmitcalled++;
3d396eb1
AK		 1447 netdev->trans_start = jiffies;
1448
3d396eb1 1449 return NETDEV_TX_OK;
6f703406
DP		 1450
1451drop_packet:
1452 adapter->stats.txdropped++;
1453 dev_kfree_skb_any(skb);
1454 return NETDEV_TX_OK;
3d396eb1
AK		 1455}
1456
a97342f9
DP		 1457static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1458{
1459 struct net_device *netdev = adapter->netdev;
1460 uint32_t temp, temp_state, temp_val;
1461 int rv = 0;
1462
f98a9f69 1463 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1464
1465 temp_state = nx_get_temp_state(temp);
1466 temp_val = nx_get_temp_val(temp);
1467
1468 if (temp_state == NX_TEMP_PANIC) {
1469 printk(KERN_ALERT
1470 "%s: Device temperature %d degrees C exceeds"
1471 " maximum allowed. Hardware has been shut down.\n",
1472 netxen_nic_driver_name, temp_val);
1473
1474 netif_carrier_off(netdev);
1475 netif_stop_queue(netdev);
1476 rv = 1;
1477 } else if (temp_state == NX_TEMP_WARN) {
1478 if (adapter->temp == NX_TEMP_NORMAL) {
1479 printk(KERN_ALERT
1480 "%s: Device temperature %d degrees C "
1481 "exceeds operating range."
1482 " Immediate action needed.\n",
1483 netxen_nic_driver_name, temp_val);
1484 }
1485 } else {
1486 if (adapter->temp == NX_TEMP_WARN) {
1487 printk(KERN_INFO
1488 "%s: Device temperature is now %d degrees C"
1489 " in normal range.\n", netxen_nic_driver_name,
1490 temp_val);
1491 }
1492 }
1493 adapter->temp = temp_state;
1494 return rv;
1495}
1496
3bf26ce3 1497void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1498{
1499 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1500
1501 if (adapter->ahw.linkup && !linkup) {
1502 printk(KERN_INFO "%s: %s NIC Link is down\n",
1503 netxen_nic_driver_name, netdev->name);
1504 adapter->ahw.linkup = 0;
1505 if (netif_running(netdev)) {
1506 netif_carrier_off(netdev);
1507 netif_stop_queue(netdev);
1508 }
c7860a2a 1509
3bf26ce3
DP		 1510 if (!adapter->has_link_events)
1511 netxen_nic_set_link_parameters(adapter);
1512
a97342f9
DP		 1513 } else if (!adapter->ahw.linkup && linkup) {
1514 printk(KERN_INFO "%s: %s NIC Link is up\n",
1515 netxen_nic_driver_name, netdev->name);
1516 adapter->ahw.linkup = 1;
1517 if (netif_running(netdev)) {
1518 netif_carrier_on(netdev);
1519 netif_wake_queue(netdev);
1520 }
c7860a2a 1521
3bf26ce3
DP		 1522 if (!adapter->has_link_events)
1523 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1524 }
1525}
1526
3bf26ce3
DP		 1527static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1528{
1529 u32 val, port, linkup;
1530
1531 port = adapter->physical_port;
1532
1533 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1534 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1535 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1536 linkup = (val == XG_LINK_UP_P3);
1537 } else {
f98a9f69 1538 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1539 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1540 linkup = (val >> port) & 1;
1541 else {
1542 val = (val >> port*8) & 0xff;
1543 linkup = (val == XG_LINK_UP);
1544 }
1545 }
1546
1547 netxen_advert_link_change(adapter, linkup);
1548}
1549
3d396eb1
AK		 1550static void netxen_watchdog(unsigned long v)
1551{
1552 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1553
1554 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1555}
1556
a97342f9
DP		 1557void netxen_watchdog_task(struct work_struct *work)
1558{
1559 struct netxen_adapter *adapter =
1560 container_of(work, struct netxen_adapter, watchdog_task);
1561
1562 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1563 return;
1564
3bf26ce3
DP		 1565 if (!adapter->has_link_events)
1566 netxen_nic_handle_phy_intr(adapter);
a97342f9 1567
922c4f2c
DP		 1568 if (netif_running(adapter->netdev))
1569 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1570}
1571
3d396eb1
AK		 1572static void netxen_tx_timeout(struct net_device *netdev)
1573{
3176ff3e
MT		 1574 struct netxen_adapter *adapter = (struct netxen_adapter *)
1575 netdev_priv(netdev);
1576 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1577}
1578
6d5aefb8 1579static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1580{
4790654c 1581 struct netxen_adapter *adapter =
3176ff3e 1582 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1
AK		 1583
1584 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1585 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1586
d8b100c5 1587 netxen_napi_disable(adapter);
ba53e6b4 1588
6c80b18d 1589 adapter->netdev->trans_start = jiffies;
ba53e6b4 1590
d8b100c5 1591 netxen_napi_enable(adapter);
6c80b18d 1592 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1593}
1594
a97342f9
DP		 1595struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1596{
1597 struct netxen_adapter *adapter = netdev_priv(netdev);
1598 struct net_device_stats *stats = &adapter->net_stats;
1599
1600 memset(stats, 0, sizeof(*stats));
1601
a97342f9 1602 stats->rx_packets = adapter->stats.no_rcv;
e98e3350 1603 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1604 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1605 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1606 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1607 stats->tx_dropped = adapter->stats.txdropped;
1608
1609 return stats;
1610}
1611
e4c93c81 1612static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1613{
d8b100c5
DP		 1614 struct nx_host_sds_ring *sds_ring = data;
1615 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1616 u32 status = 0;
1617
1618 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1619
1620 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1621 return IRQ_NONE;
e01872af 1622
d71e1be8
DP		 1623 if (adapter->ahw.revision_id >= NX_P3_B1) {
1624 /* check interrupt state machine, to be sure */
1625 status = adapter->pci_read_immediate(adapter,
1626 ISR_INT_STATE_REG);
1627 if (!ISR_LEGACY_INT_TRIGGERED(status))
1628 return IRQ_NONE;
1629
092bc571
DP		 1630 } else {
1631 unsigned long our_int = 0;
d71e1be8 1632
f98a9f69 1633 our_int = NXRD32(adapter, CRB_INT_VECTOR);
092bc571 1634
d71e1be8 1635 /* not our interrupt */
092bc571 1636 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1637 return IRQ_NONE;
1638
092bc571 1639 /* claim interrupt */
f98a9f69 1640 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1641 }
1642
092bc571
DP		 1643 /* clear interrupt */
1644 if (adapter->fw_major < 4)
d8b100c5 1645 netxen_nic_disable_int(sds_ring);
092bc571
DP		 1646
1647 adapter->pci_write_immediate(adapter,
1648 adapter->legacy_intr.tgt_status_reg,
1649 0xffffffff);
1650 /* read twice to ensure write is flushed */
1651 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1652 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1653
d8b100c5 1654 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1655
1656 return IRQ_HANDLED;
1657}
1658
e4c93c81 1659static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1660{
d8b100c5
DP		 1661 struct nx_host_sds_ring *sds_ring = data;
1662 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1663
092bc571
DP		 1664 /* clear interrupt */
1665 adapter->pci_write_immediate(adapter,
1666 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1667
d8b100c5 1668 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1669 return IRQ_HANDLED;
1670}
1671
b3df68f8
DP		 1672static irqreturn_t netxen_msix_intr(int irq, void *data)
1673{
d8b100c5 1674 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1675
d8b100c5 1676 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1677 return IRQ_HANDLED;
1678}
1679
bea3348e 1680static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1681{
d8b100c5
DP		 1682 struct nx_host_sds_ring *sds_ring =
1683 container_of(napi, struct nx_host_sds_ring, napi);
1684
1685 struct netxen_adapter *adapter = sds_ring->adapter;
1686
05aaa02d 1687 int tx_complete;
bea3348e 1688 int work_done;
3d396eb1 1689
05aaa02d 1690 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1691
d8b100c5 1692 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 1693
05aaa02d 1694 if ((work_done < budget) && tx_complete) {
d8b100c5
DP		 1695 napi_complete(&sds_ring->napi);
1696 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 1697 }
1698
bea3348e 1699 return work_done;
3d396eb1
AK		 1700}
1701
1702#ifdef CONFIG_NET_POLL_CONTROLLER
1703static void netxen_nic_poll_controller(struct net_device *netdev)
1704{
3176ff3e 1705 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1706 disable_irq(adapter->irq);
1494a814 1707 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1708 enable_irq(adapter->irq);
1709}
1710#endif
3d396eb1
AK		 1711
1712static struct pci_driver netxen_driver = {
1713 .name = netxen_nic_driver_name,
1714 .id_table = netxen_pci_tbl,
1715 .probe = netxen_nic_probe,
0b72e659
DP		 1716 .remove = __devexit_p(netxen_nic_remove),
1717 .suspend = netxen_nic_suspend,
1718 .resume = netxen_nic_resume
3d396eb1
AK		 1719};
1720
1721/* Driver Registration on NetXen card */
1722
1723static int __init netxen_init_module(void)
1724{
ff4fbd43
DP		 1725 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1726
79ea13ce 1727 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1728 return -ENOMEM;
1729
184231bd 1730 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1731}
1732
1733module_init(netxen_init_module);
1734
1735static void __exit netxen_exit_module(void)
1736{
3d396eb1 1737 pci_unregister_driver(&netxen_driver);
9de06610 1738 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1739}
1740
1741module_exit(netxen_exit_module);
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