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netxen: fix link event handling
[linux-2.6-block.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
f6d21f44
DP		 178 if ((adapter->flags & NETXEN_NIC_MSIX_ENABLED) &&
179 adapter->rss_supported)
d8b100c5
DP		 180 adapter->max_sds_rings = (num_online_cpus() >= 4) ? 4 : 2;
181 else
182 adapter->max_sds_rings = 1;
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];
219 netxen_nic_disable_int(sds_ring);
220 napi_disable(&sds_ring->napi);
221 }
222}
223
2956640d
DP		 224static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
225{
226 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 227 uint64_t mask, cmask;
228
229 adapter->pci_using_dac = 0;
2956640d 230
6afd142f 231 mask = DMA_BIT_MASK(32);
2956640d
DP		 232 /*
233 * Consistent DMA mask is set to 32 bit because it cannot be set to
234 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
235 * come off this pool.
236 */
6afd142f 237 cmask = DMA_BIT_MASK(32);
1f434f63
DP		 238
239#ifndef CONFIG_IA64
240 if (revision_id >= NX_P3_B0)
6afd142f 241 mask = DMA_BIT_MASK(39);
1f434f63 242 else if (revision_id == NX_P2_C1)
6afd142f 243 mask = DMA_BIT_MASK(35);
1f434f63 244#endif
2956640d 245 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 246 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 247 adapter->pci_using_dac = 1;
248 return 0;
249 }
2956640d 250
1f434f63
DP		 251 return -EIO;
252}
253
254/* Update addressable range if firmware supports it */
255static int
256nx_update_dma_mask(struct netxen_adapter *adapter)
257{
258 int change, shift, err;
259 uint64_t mask, old_mask;
260 struct pci_dev *pdev = adapter->pdev;
261
262 change = 0;
263
f98a9f69 264 shift = NXRD32(adapter, CRB_DMA_SHIFT);
1f434f63
DP		 265 if (shift >= 32)
266 return 0;
267
268 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
269 change = 1;
270 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
271 change = 1;
272
273 if (change) {
274 old_mask = pdev->dma_mask;
275 mask = (1ULL<<(32+shift)) - 1;
276
277 err = pci_set_dma_mask(pdev, mask);
278 if (err)
279 return pci_set_dma_mask(pdev, old_mask);
2956640d
DP		 280 }
281
2956640d
DP		 282 return 0;
283}
284
285static void netxen_check_options(struct netxen_adapter *adapter)
286{
438627c7
DP		 287 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
288 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
289 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
290 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
2956640d 291
f6d21f44
DP		 292 adapter->msix_supported = 0;
293 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
c7860a2a 294 adapter->msix_supported = !!use_msi_x;
f6d21f44
DP		 295 adapter->rss_supported = !!use_msi_x;
296 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
297 switch (adapter->ahw.board_type) {
298 case NETXEN_BRDTYPE_P2_SB31_10G:
299 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
300 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
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
410static void netxen_init_msix_entries(struct netxen_adapter *adapter)
411{
412 int i;
413
414 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
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);
445 else
9dc28efe
DP		 446 adapter->macaddr_set(adapter, netdev->dev_addr);
447
448 return 0;
449}
450
1abd266f
SH		 451static void netxen_set_multicast_list(struct net_device *dev)
452{
453 struct netxen_adapter *adapter = netdev_priv(dev);
454
455 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
456 netxen_p3_nic_set_multi(dev);
457 else
458 netxen_p2_nic_set_multi(dev);
459}
460
461static const struct net_device_ops netxen_netdev_ops = {
462 .ndo_open = netxen_nic_open,
463 .ndo_stop = netxen_nic_close,
464 .ndo_start_xmit = netxen_nic_xmit_frame,
465 .ndo_get_stats = netxen_nic_get_stats,
466 .ndo_validate_addr = eth_validate_addr,
467 .ndo_set_multicast_list = netxen_set_multicast_list,
468 .ndo_set_mac_address = netxen_nic_set_mac,
469 .ndo_change_mtu = netxen_nic_change_mtu,
470 .ndo_tx_timeout = netxen_tx_timeout,
471#ifdef CONFIG_NET_POLL_CONTROLLER
472 .ndo_poll_controller = netxen_nic_poll_controller,
473#endif
474};
475
97daee83
DP		 476static void
477netxen_setup_intr(struct netxen_adapter *adapter)
478{
479 struct netxen_legacy_intr_set *legacy_intrp;
480 struct pci_dev *pdev = adapter->pdev;
481
482 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 483
484 if (adapter->ahw.revision_id >= NX_P3_B0)
485 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
486 else
487 legacy_intrp = &legacy_intr[0];
488 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
489 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
490 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
491 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
492
493 netxen_set_msix_bit(pdev, 0);
494
495 if (adapter->msix_supported) {
496
497 netxen_init_msix_entries(adapter);
498 if (pci_enable_msix(pdev, adapter->msix_entries,
499 MSIX_ENTRIES_PER_ADAPTER))
500 goto request_msi;
501
502 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
503 netxen_set_msix_bit(pdev, 1);
504 dev_info(&pdev->dev, "using msi-x interrupts\n");
505
506 } else {
507request_msi:
508 if (use_msi && !pci_enable_msi(pdev)) {
509 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
510 dev_info(&pdev->dev, "using msi interrupts\n");
511 } else
512 dev_info(&pdev->dev, "using legacy interrupts\n");
d8b100c5 513 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 514 }
515}
516
517static void
518netxen_teardown_intr(struct netxen_adapter *adapter)
519{
520 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
521 pci_disable_msix(adapter->pdev);
522 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
523 pci_disable_msi(adapter->pdev);
524}
525
526static void
527netxen_cleanup_pci_map(struct netxen_adapter *adapter)
528{
529 if (adapter->ahw.db_base != NULL)
530 iounmap(adapter->ahw.db_base);
531 if (adapter->ahw.pci_base0 != NULL)
532 iounmap(adapter->ahw.pci_base0);
533 if (adapter->ahw.pci_base1 != NULL)
534 iounmap(adapter->ahw.pci_base1);
535 if (adapter->ahw.pci_base2 != NULL)
536 iounmap(adapter->ahw.pci_base2);
537}
538
539static int
540netxen_setup_pci_map(struct netxen_adapter *adapter)
541{
542 void __iomem *mem_ptr0 = NULL;
543 void __iomem *mem_ptr1 = NULL;
544 void __iomem *mem_ptr2 = NULL;
545 void __iomem *db_ptr = NULL;
546
97daee83
DP		 547 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
548
549 struct pci_dev *pdev = adapter->pdev;
550 int pci_func = adapter->ahw.pci_func;
551
552 int err = 0;
553
554 /*
555 * Set the CRB window to invalid. If any register in window 0 is
556 * accessed it should set the window to 0 and then reset it to 1.
557 */
558 adapter->curr_window = 255;
559 adapter->ahw.qdr_sn_window = -1;
560 adapter->ahw.ddr_mn_window = -1;
561
562 /* remap phys address */
563 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
564 mem_len = pci_resource_len(pdev, 0);
565 pci_len0 = 0;
566
567 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
568 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
569 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
570 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
97daee83
DP		 571 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
572 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
573 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
574
575 /* 128 Meg of memory */
576 if (mem_len == NETXEN_PCI_128MB_SIZE) {
577 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
578 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
579 SECOND_PAGE_GROUP_SIZE);
580 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
581 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 582 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
583 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
584 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
585 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 586 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
587 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
588 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
589 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
590 adapter->pci_write_immediate =
591 netxen_nic_pci_write_immediate_2M;
97daee83
DP		 592 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
593 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
594 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
595
596 mem_ptr0 = pci_ioremap_bar(pdev, 0);
597 if (mem_ptr0 == NULL) {
598 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
599 return -EIO;
600 }
601 pci_len0 = mem_len;
97daee83
DP		 602
603 adapter->ahw.ddr_mn_window = 0;
604 adapter->ahw.qdr_sn_window = 0;
605
606 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
607 (pci_func * 0x20);
608 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
609 if (pci_func < 4)
610 adapter->ahw.ms_win_crb += (pci_func * 0x20);
611 else
612 adapter->ahw.ms_win_crb +=
613 0xA0 + ((pci_func - 4) * 0x10);
614 } else {
615 return -EIO;
616 }
617
618 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
619
620 adapter->ahw.pci_base0 = mem_ptr0;
621 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 622 adapter->ahw.pci_base1 = mem_ptr1;
623 adapter->ahw.pci_base2 = mem_ptr2;
624
625 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
626 goto skip_doorbell;
627
628 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
629 db_len = pci_resource_len(pdev, 4);
630
631 if (db_len == 0) {
632 printk(KERN_ERR "%s: doorbell is disabled\n",
633 netxen_nic_driver_name);
634 err = -EIO;
635 goto err_out;
636 }
637
638 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
639 if (!db_ptr) {
640 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
641 netxen_nic_driver_name);
642 err = -EIO;
643 goto err_out;
644 }
645
646skip_doorbell:
647 adapter->ahw.db_base = db_ptr;
648 adapter->ahw.db_len = db_len;
649 return 0;
650
651err_out:
652 netxen_cleanup_pci_map(adapter);
653 return err;
654}
655
ba599d4f
DP		 656static int
657netxen_start_firmware(struct netxen_adapter *adapter)
658{
659 int val, err, first_boot;
660 struct pci_dev *pdev = adapter->pdev;
661
0b72e659
DP		 662 int first_driver = 0;
663 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
664 if (adapter->ahw.pci_func == 0)
665 first_driver = 1;
666 } else {
667 if (adapter->portnum == 0)
668 first_driver = 1;
669 }
670
671 if (!first_driver)
672 return 0;
673
f98a9f69 674 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 675
676 err = netxen_check_hw_init(adapter, first_boot);
677 if (err) {
678 dev_err(&pdev->dev, "error in init HW init sequence\n");
679 return err;
680 }
681
ba599d4f 682 if (first_boot != 0x55555555) {
f98a9f69 683 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
ba599d4f
DP		 684 netxen_pinit_from_rom(adapter, 0);
685 msleep(1);
686 }
567c6c4e 687
f98a9f69 688 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 689 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
690 netxen_set_port_mode(adapter);
691
ba599d4f
DP		 692 netxen_load_firmware(adapter);
693
694 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
695
696 /* Initialize multicast addr pool owners */
697 val = 0x7654;
1e2d0059 698 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 699 val |= 0x0f000000;
f98a9f69 700 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 701
702 }
703
704 err = netxen_initialize_adapter_offload(adapter);
705 if (err)
706 return err;
707
708 /*
709 * Tell the hardware our version number.
710 */
711 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
712 | ((_NETXEN_NIC_LINUX_MINOR << 8))
713 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 714 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f
DP		 715
716 /* Handshake with the card before we register the devices. */
717 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
718 if (err) {
719 netxen_free_adapter_offload(adapter);
720 return err;
721 }
722
723 return 0;
724}
725
9f5bc7f1
DP		 726static int
727netxen_nic_request_irq(struct netxen_adapter *adapter)
728{
729 irq_handler_t handler;
d8b100c5
DP		 730 struct nx_host_sds_ring *sds_ring;
731 int err, ring;
732
9f5bc7f1
DP		 733 unsigned long flags = IRQF_SAMPLE_RANDOM;
734 struct net_device *netdev = adapter->netdev;
d8b100c5 735 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 736
9f5bc7f1
DP		 737 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
738 handler = netxen_msix_intr;
739 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
740 handler = netxen_msi_intr;
741 else {
742 flags |= IRQF_SHARED;
743 handler = netxen_intr;
744 }
745 adapter->irq = netdev->irq;
746
d8b100c5
DP		 747 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
748 sds_ring = &recv_ctx->sds_rings[ring];
749 sprintf(sds_ring->name, "%16s[%d]", netdev->name, ring);
750 err = request_irq(sds_ring->irq, handler,
751 flags, sds_ring->name, sds_ring);
752 if (err)
753 return err;
754 }
755
756 return 0;
757}
758
759static void
760netxen_nic_free_irq(struct netxen_adapter *adapter)
761{
762 int ring;
763 struct nx_host_sds_ring *sds_ring;
764
765 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
766
767 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
768 sds_ring = &recv_ctx->sds_rings[ring];
769 free_irq(sds_ring->irq, sds_ring);
770 }
9f5bc7f1
DP		 771}
772
773static int
774netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
775{
776 int err;
777
778 err = adapter->init_port(adapter, adapter->physical_port);
779 if (err) {
780 printk(KERN_ERR "%s: Failed to initialize port %d\n",
781 netxen_nic_driver_name, adapter->portnum);
782 return err;
783 }
784 adapter->macaddr_set(adapter, netdev->dev_addr);
785
786 netxen_nic_set_link_parameters(adapter);
787
788 netxen_set_multicast_list(netdev);
789 if (adapter->set_mtu)
790 adapter->set_mtu(adapter, netdev->mtu);
791
792 adapter->ahw.linkup = 0;
793 mod_timer(&adapter->watchdog_timer, jiffies);
794
d8b100c5
DP		 795 netxen_napi_enable(adapter);
796
797 if (adapter->max_sds_rings > 1)
798 netxen_config_rss(adapter, 1);
9f5bc7f1 799
5103c9f7 800 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3
DP		 801 netxen_linkevent_request(adapter, 1);
802
9f5bc7f1
DP		 803 return 0;
804}
805
806static void
807netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
808{
809 netif_carrier_off(netdev);
810 netif_stop_queue(netdev);
d8b100c5 811 netxen_napi_disable(adapter);
9f5bc7f1
DP		 812
813 if (adapter->stop_port)
814 adapter->stop_port(adapter);
815
9f5bc7f1
DP		 816 netxen_release_tx_buffers(adapter);
817
818 FLUSH_SCHEDULED_WORK();
819 del_timer_sync(&adapter->watchdog_timer);
820}
821
822
823static int
824netxen_nic_attach(struct netxen_adapter *adapter)
825{
826 struct net_device *netdev = adapter->netdev;
827 struct pci_dev *pdev = adapter->pdev;
becf46a0 828 int err, ring;
d8b100c5 829 struct nx_host_rds_ring *rds_ring;
d877f1e3 830 struct nx_host_tx_ring *tx_ring;
9f5bc7f1
DP		 831
832 err = netxen_init_firmware(adapter);
833 if (err != 0) {
834 printk(KERN_ERR "Failed to init firmware\n");
835 return -EIO;
836 }
837
838 if (adapter->fw_major < 4)
839 adapter->max_rds_rings = 3;
840 else
841 adapter->max_rds_rings = 2;
842
843 err = netxen_alloc_sw_resources(adapter);
844 if (err) {
845 printk(KERN_ERR "%s: Error in setting sw resources\n",
846 netdev->name);
847 return err;
848 }
849
850 netxen_nic_clear_stats(adapter);
851
852 err = netxen_alloc_hw_resources(adapter);
853 if (err) {
854 printk(KERN_ERR "%s: Error in setting hw resources\n",
855 netdev->name);
856 goto err_out_free_sw;
857 }
858
859 if (adapter->fw_major < 4) {
d877f1e3
DP		 860 tx_ring = &adapter->tx_ring;
861 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
862 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
9f5bc7f1 863
d877f1e3
DP		 864 netxen_nic_update_cmd_producer(adapter, tx_ring, 0);
865 netxen_nic_update_cmd_consumer(adapter, tx_ring, 0);
9f5bc7f1
DP		 866 }
867
d8b100c5
DP		 868 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
869 rds_ring = &adapter->recv_ctx.rds_rings[ring];
870 netxen_post_rx_buffers(adapter, ring, rds_ring);
871 }
9f5bc7f1
DP		 872
873 err = netxen_nic_request_irq(adapter);
874 if (err) {
875 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
876 netdev->name);
877 goto err_out_free_rxbuf;
878 }
879
880 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
881 return 0;
882
883err_out_free_rxbuf:
884 netxen_release_rx_buffers(adapter);
885 netxen_free_hw_resources(adapter);
886err_out_free_sw:
887 netxen_free_sw_resources(adapter);
888 return err;
889}
890
891static void
892netxen_nic_detach(struct netxen_adapter *adapter)
893{
d8b100c5 894 netxen_nic_free_irq(adapter);
9f5bc7f1
DP		 895
896 netxen_release_rx_buffers(adapter);
897 netxen_free_hw_resources(adapter);
898 netxen_free_sw_resources(adapter);
899
900 adapter->is_up = 0;
901}
902
3d396eb1
AK		 903static int __devinit
904netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
905{
906 struct net_device *netdev = NULL;
907 struct netxen_adapter *adapter = NULL;
2956640d 908 int i = 0, err;
3176ff3e 909 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 910 uint8_t revision_id;
3d396eb1 911
3176ff3e 912 if (pdev->class != 0x020000) {
dcd56fdb 913 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 914 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 915 return -ENODEV;
916 }
2956640d 917
11d89d63
DP		 918 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
919 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
920 "will not be enabled.\n",
921 NX_P3_A0, NX_P3_B1);
922 return -ENODEV;
923 }
924
3d396eb1
AK		 925 if ((err = pci_enable_device(pdev)))
926 return err;
2956640d 927
3d396eb1
AK		 928 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
929 err = -ENODEV;
930 goto err_out_disable_pdev;
931 }
932
933 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
934 goto err_out_disable_pdev;
935
936 pci_set_master(pdev);
3176ff3e
MT		 937
938 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
939 if(!netdev) {
940 printk(KERN_ERR"%s: Failed to allocate memory for the "
941 "device block.Check system memory resource"
942 " usage.\n", netxen_nic_driver_name);
943 goto err_out_free_res;
944 }
945
3176ff3e
MT		 946 SET_NETDEV_DEV(netdev, &pdev->dev);
947
4cf1653a 948 adapter = netdev_priv(netdev);
2956640d
DP		 949 adapter->netdev = netdev;
950 adapter->pdev = pdev;
13ba9c77 951 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 952
953 revision_id = pdev->revision;
954 adapter->ahw.revision_id = revision_id;
955
956 err = nx_set_dma_mask(adapter, revision_id);
957 if (err)
958 goto err_out_free_netdev;
959
3ce06a32 960 rwlock_init(&adapter->adapter_lock);
d8b100c5 961 spin_lock_init(&adapter->tx_clean_lock);
3ce06a32 962
97daee83
DP		 963 err = netxen_setup_pci_map(adapter);
964 if (err)
6c80b18d 965 goto err_out_free_netdev;
3d396eb1 966
2d1a3bbd 967 /* This will be reset for mezz cards */
3176ff3e 968 adapter->portnum = pci_func_id;
200eef20 969 adapter->rx_csum = 1;
623621b0 970 adapter->mc_enabled = 0;
83821a07 971 if (NX_IS_REVISION_P3(revision_id))
2956640d 972 adapter->max_mc_count = 38;
83821a07 973 else
2956640d 974 adapter->max_mc_count = 16;
3176ff3e 975
1abd266f 976 netdev->netdev_ops = &netxen_netdev_ops;
05aaa02d 977 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 978
979 netxen_nic_change_mtu(netdev, netdev->mtu);
980
981 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1abd266f 982
cdff1036 983 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
a92e9e65 984 netdev->features |= (NETIF_F_GRO);
cdff1036
DP		 985 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
986
cd1f8160 987 if (NX_IS_REVISION_P3(revision_id)) {
cdff1036
DP		 988 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
989 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
cd1f8160 990 }
3176ff3e 991
cdff1036 992 if (adapter->pci_using_dac) {
3176ff3e 993 netdev->features |= NETIF_F_HIGHDMA;
cdff1036
DP		 994 netdev->vlan_features |= NETIF_F_HIGHDMA;
995 }
3176ff3e 996
dcd56fdb
DP		 997 if (netxen_nic_get_board_info(adapter) != 0) {
998 printk("%s: Error getting board config info.\n",
2956640d 999 netxen_nic_driver_name);
dcd56fdb
DP		 1000 err = -EIO;
1001 goto err_out_iounmap;
1002 }
6c80b18d 1003
6c80b18d
MT		 1004 netxen_initialize_adapter_ops(adapter);
1005
13ba9c77 1006 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1007 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1008 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1009 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1010 if (pci_func_id >= 2)
13ba9c77 1011 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1012 break;
1013 default:
1014 break;
1015 }
13ba9c77 1016
0b72e659
DP		 1017 err = netxen_start_firmware(adapter);
1018 if (err)
1019 goto err_out_iounmap;
2956640d 1020
1f434f63
DP		 1021 nx_update_dma_mask(adapter);
1022
1e2d0059 1023 netxen_nic_get_firmware_info(adapter);
d9e651bc 1024
3d396eb1 1025 /*
6c80b18d 1026 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1027 */
dcd56fdb 1028 adapter->physical_port = adapter->portnum;
044fad0d 1029 if (adapter->fw_major < 4) {
f98a9f69 1030 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1031 if (i != 0x55555555)
1032 adapter->physical_port = i;
1033 }
6c80b18d 1034
438627c7 1035 netxen_check_options(adapter);
2956640d 1036
97daee83 1037 netxen_setup_intr(adapter);
2956640d 1038
d8b100c5
DP		 1039 netdev->irq = adapter->msix_entries[0].vector;
1040
71dcddbd
DP		 1041 if (netxen_napi_add(adapter, netdev))
1042 goto err_out_disable_msi;
2956640d 1043
2956640d 1044 init_timer(&adapter->watchdog_timer);
2956640d
DP		 1045 adapter->watchdog_timer.function = &netxen_watchdog;
1046 adapter->watchdog_timer.data = (unsigned long)adapter;
1047 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1048 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1049
9dc28efe
DP		 1050 err = netxen_read_mac_addr(adapter);
1051 if (err)
1052 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 1053
3176ff3e
MT		 1054 netif_carrier_off(netdev);
1055 netif_stop_queue(netdev);
1056
6c80b18d
MT		 1057 if ((err = register_netdev(netdev))) {
1058 printk(KERN_ERR "%s: register_netdev failed port #%d"
1059 " aborting\n", netxen_nic_driver_name,
1060 adapter->portnum);
1061 err = -EIO;
2956640d 1062 goto err_out_disable_msi;
6c80b18d
MT		 1063 }
1064
1065 pci_set_drvdata(pdev, adapter);
3d396eb1 1066
1e2d0059 1067 switch (adapter->ahw.port_type) {
2956640d
DP		 1068 case NETXEN_NIC_GBE:
1069 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1070 adapter->netdev->name);
1071 break;
1072 case NETXEN_NIC_XGBE:
1073 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1074 adapter->netdev->name);
1075 break;
3d396eb1 1076 }
3d396eb1 1077
2956640d
DP		 1078 return 0;
1079
1080err_out_disable_msi:
97daee83 1081 netxen_teardown_intr(adapter);
6c80b18d 1082
0b72e659 1083 netxen_free_adapter_offload(adapter);
3d396eb1 1084
2956640d 1085err_out_iounmap:
97daee83 1086 netxen_cleanup_pci_map(adapter);
cb8011ad 1087
6c80b18d
MT		 1088err_out_free_netdev:
1089 free_netdev(netdev);
1090
1091err_out_free_res:
3d396eb1 1092 pci_release_regions(pdev);
6c80b18d
MT		 1093
1094err_out_disable_pdev:
2956640d 1095 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1096 pci_disable_device(pdev);
1097 return err;
1098}
1099
1100static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1101{
1102 struct netxen_adapter *adapter;
3176ff3e 1103 struct net_device *netdev;
3d396eb1 1104
6c80b18d 1105 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1106 if (adapter == NULL)
1107 return;
1108
6c80b18d
MT		 1109 netdev = adapter->netdev;
1110
96acb6eb
DP		 1111 unregister_netdev(netdev);
1112
96acb6eb 1113 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1 1114 netxen_nic_detach(adapter);
06e9d9f9
DP		 1115
1116 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1117 netxen_p3_free_mac_list(adapter);
96acb6eb 1118 }
3d396eb1 1119
439b454e
DP		 1120 if (adapter->portnum == 0)
1121 netxen_free_adapter_offload(adapter);
96acb6eb 1122
97daee83 1123 netxen_teardown_intr(adapter);
71dcddbd 1124 netxen_free_sds_rings(&adapter->recv_ctx);
3052246c 1125
97daee83 1126 netxen_cleanup_pci_map(adapter);
595e3fb8
MT		 1127
1128 pci_release_regions(pdev);
3052246c 1129 pci_disable_device(pdev);
595e3fb8
MT		 1130 pci_set_drvdata(pdev, NULL);
1131
6c80b18d 1132 free_netdev(netdev);
3d396eb1
AK		 1133}
1134
0b72e659
DP		 1135static int
1136netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1137{
1138
1139 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1140 struct net_device *netdev = adapter->netdev;
1141
1142 netif_device_detach(netdev);
1143
1144 if (netif_running(netdev))
1145 netxen_nic_down(adapter, netdev);
1146
1147 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1148 netxen_nic_detach(adapter);
1149
1150 pci_save_state(pdev);
1151
1152 if (netxen_nic_wol_supported(adapter)) {
1153 pci_enable_wake(pdev, PCI_D3cold, 1);
1154 pci_enable_wake(pdev, PCI_D3hot, 1);
1155 }
1156
1157 pci_disable_device(pdev);
1158 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1159
1160 return 0;
1161}
1162
1163static int
1164netxen_nic_resume(struct pci_dev *pdev)
1165{
1166 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1167 struct net_device *netdev = adapter->netdev;
1168 int err;
1169
1170 pci_set_power_state(pdev, PCI_D0);
1171 pci_restore_state(pdev);
1172
1173 err = pci_enable_device(pdev);
1174 if (err)
1175 return err;
1176
1177 adapter->curr_window = 255;
1178
1179 err = netxen_start_firmware(adapter);
1180 if (err) {
1181 dev_err(&pdev->dev, "failed to start firmware\n");
1182 return err;
1183 }
1184
1185 if (netif_running(netdev)) {
1186 err = netxen_nic_attach(adapter);
1187 if (err)
1188 return err;
1189
1190 err = netxen_nic_up(adapter, netdev);
1191 if (err)
1192 return err;
1193
1194 netif_device_attach(netdev);
1195 }
1196
1197 return 0;
1198}
1199
3d396eb1
AK		 1200static int netxen_nic_open(struct net_device *netdev)
1201{
4cf1653a 1202 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1203 int err = 0;
3d396eb1 1204
dcd56fdb
DP		 1205 if (adapter->driver_mismatch)
1206 return -EIO;
1207
3d396eb1 1208 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1
DP		 1209 err = netxen_nic_attach(adapter);
1210 if (err)
3d396eb1 1211 return err;
ed25ffa1 1212 }
2956640d 1213
9f5bc7f1
DP		 1214 err = netxen_nic_up(adapter, netdev);
1215 if (err)
1216 goto err_out;
05aaa02d 1217
dcd56fdb 1218 netif_start_queue(netdev);
3d396eb1
AK		 1219
1220 return 0;
2956640d 1221
9f5bc7f1
DP		 1222err_out:
1223 netxen_nic_detach(adapter);
2956640d 1224 return err;
3d396eb1
AK		 1225}
1226
1227/*
1228 * netxen_nic_close - Disables a network interface entry point
1229 */
1230static int netxen_nic_close(struct net_device *netdev)
1231{
3176ff3e 1232 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1233
9f5bc7f1 1234 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1235 return 0;
1236}
1237
391587c3 1238static bool netxen_tso_check(struct net_device *netdev,
cd1f8160
DP		 1239 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1240{
391587c3
DP		 1241 bool tso = false;
1242 u8 opcode = TX_ETHER_PKT;
cdff1036
DP		 1243 __be16 protocol = skb->protocol;
1244 u16 flags = 0;
1245
09640e63 1246 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
cdff1036
DP		 1247 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1248 protocol = vh->h_vlan_encapsulated_proto;
1249 flags = FLAGS_VLAN_TAGGED;
1250 }
cd1f8160 1251
391587c3
DP		 1252 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1253 skb_shinfo(skb)->gso_size > 0) {
1254
1255 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1256 desc->total_hdr_length =
1257 skb_transport_offset(skb) + tcp_hdrlen(skb);
1258
09640e63 1259 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3
DP		 1260 TX_TCP_LSO6 : TX_TCP_LSO;
1261 tso = true;
cd1f8160
DP		 1262
1263 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1264 u8 l4proto;
1265
09640e63 1266 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1267 l4proto = ip_hdr(skb)->protocol;
1268
1269 if (l4proto == IPPROTO_TCP)
1270 opcode = TX_TCP_PKT;
1271 else if(l4proto == IPPROTO_UDP)
1272 opcode = TX_UDP_PKT;
09640e63 1273 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1274 l4proto = ipv6_hdr(skb)->nexthdr;
1275
1276 if (l4proto == IPPROTO_TCP)
1277 opcode = TX_TCPV6_PKT;
1278 else if(l4proto == IPPROTO_UDP)
1279 opcode = TX_UDPV6_PKT;
1280 }
cd1f8160
DP		 1281 }
1282 desc->tcp_hdr_offset = skb_transport_offset(skb);
1283 desc->ip_hdr_offset = skb_network_offset(skb);
cdff1036 1284 netxen_set_tx_flags_opcode(desc, flags, opcode);
391587c3 1285 return tso;
cd1f8160
DP		 1286}
1287
6f703406
DP		 1288static void
1289netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1290 struct netxen_cmd_buffer *pbuf, int last)
1291{
1292 int k;
1293 struct netxen_skb_frag *buffrag;
1294
1295 buffrag = &pbuf->frag_array[0];
1296 pci_unmap_single(pdev, buffrag->dma,
1297 buffrag->length, PCI_DMA_TODEVICE);
1298
1299 for (k = 1; k < last; k++) {
1300 buffrag = &pbuf->frag_array[k];
1301 pci_unmap_page(pdev, buffrag->dma,
1302 buffrag->length, PCI_DMA_TODEVICE);
1303 }
1304}
1305
d32cc3d2
DP		 1306static inline void
1307netxen_clear_cmddesc(u64 *desc)
1308{
1309 int i;
1310 for (i = 0; i < 8; i++)
1311 desc[i] = 0ULL;
1312}
1313
1314static int
1315netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1316{
3176ff3e 1317 struct netxen_adapter *adapter = netdev_priv(netdev);
d877f1e3 1318 struct nx_host_tx_ring *tx_ring = &adapter->tx_ring;
3d396eb1 1319 unsigned int first_seg_len = skb->len - skb->data_len;
391587c3 1320 struct netxen_cmd_buffer *pbuf;
3d396eb1 1321 struct netxen_skb_frag *buffrag;
391587c3 1322 struct cmd_desc_type0 *hwdesc;
6f703406
DP		 1323 struct pci_dev *pdev = adapter->pdev;
1324 dma_addr_t temp_dma;
391587c3 1325 int i, k;
3d396eb1 1326
ba53e6b4 1327 u32 producer, consumer;
391587c3 1328 int frag_count, no_of_desc;
d877f1e3 1329 u32 num_txd = tx_ring->num_desc;
391587c3 1330 bool is_tso = false;
3d396eb1 1331
3d396eb1
AK		 1332 frag_count = skb_shinfo(skb)->nr_frags + 1;
1333
d877f1e3 1334 /* 4 fragments per cmd des */
3d396eb1 1335 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1336
d877f1e3 1337 producer = tx_ring->producer;
ba53e6b4 1338 smp_mb();
d877f1e3 1339 consumer = tx_ring->sw_consumer;
ba53e6b4
DP		 1340 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1341 netif_stop_queue(netdev);
1342 smp_mb();
1343 return NETDEV_TX_BUSY;
53a01e00 1344 }
3d396eb1 1345
d877f1e3 1346 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1347 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1348 pbuf = &tx_ring->cmd_buf_arr[producer];
391587c3
DP		 1349
1350 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1351
3d396eb1 1352 pbuf->skb = skb;
3d396eb1 1353 pbuf->frag_count = frag_count;
3d396eb1 1354 buffrag = &pbuf->frag_array[0];
6f703406 1355 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
3d396eb1 1356 PCI_DMA_TODEVICE);
6f703406
DP		 1357 if (pci_dma_mapping_error(pdev, temp_dma))
1358 goto drop_packet;
1359
1360 buffrag->dma = temp_dma;
3d396eb1 1361 buffrag->length = first_seg_len;
391587c3
DP		 1362 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1363 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1364
d32cc3d2 1365 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
3d396eb1
AK		 1366 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1367
1368 for (i = 1, k = 1; i < frag_count; i++, k++) {
1369 struct skb_frag_struct *frag;
1370 int len, temp_len;
1371 unsigned long offset;
3d396eb1
AK		 1372
1373 /* move to next desc. if there is a need */
1374 if ((i & 0x3) == 0) {
1375 k = 0;
ba53e6b4 1376 producer = get_next_index(producer, num_txd);
d877f1e3 1377 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1378 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1379 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1380 pbuf->skb = NULL;
3d396eb1
AK		 1381 }
1382 frag = &skb_shinfo(skb)->frags[i - 1];
1383 len = frag->size;
1384 offset = frag->page_offset;
1385
1386 temp_len = len;
6f703406 1387 temp_dma = pci_map_page(pdev, frag->page, offset,
3d396eb1 1388 len, PCI_DMA_TODEVICE);
6f703406
DP		 1389 if (pci_dma_mapping_error(pdev, temp_dma)) {
1390 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1391 goto drop_packet;
1392 }
3d396eb1
AK		 1393
1394 buffrag++;
1395 buffrag->dma = temp_dma;
1396 buffrag->length = temp_len;
1397
d32cc3d2 1398 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
3d396eb1
AK		 1399 switch (k) {
1400 case 0:
3d396eb1
AK		 1401 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1402 break;
1403 case 1:
3d396eb1
AK		 1404 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1405 break;
1406 case 2:
3d396eb1
AK		 1407 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1408 break;
1409 case 3:
3d396eb1
AK		 1410 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1411 break;
1412 }
1413 frag++;
1414 }
ba53e6b4 1415 producer = get_next_index(producer, num_txd);
3d396eb1 1416
3d396eb1
AK		 1417 /* For LSO, we need to copy the MAC/IP/TCP headers into
1418 * the descriptor ring
1419 */
391587c3 1420 if (is_tso) {
3d396eb1 1421 int hdr_len, first_hdr_len, more_hdr;
391587c3 1422 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
ed25ffa1
AK		 1423 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1424 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1425 more_hdr = 1;
1426 } else {
1427 first_hdr_len = hdr_len;
1428 more_hdr = 0;
1429 }
1430 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
d877f1e3
DP		 1431 hwdesc = &tx_ring->desc_head[producer];
1432 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1433 pbuf->skb = NULL;
3d396eb1
AK		 1434
1435 /* copy the first 64 bytes */
ed25ffa1 1436 memcpy(((void *)hwdesc) + 2,
3d396eb1 1437 (void *)(skb->data), first_hdr_len);
ba53e6b4 1438 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1439
1440 if (more_hdr) {
d877f1e3
DP		 1441 hwdesc = &tx_ring->desc_head[producer];
1442 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1443 pbuf->skb = NULL;
3d396eb1
AK		 1444 /* copy the next 64 bytes - should be enough except
1445 * for pathological case
1446 */
d626f62b
ACM		 1447 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1448 hwdesc,
1449 (hdr_len -
1450 first_hdr_len));
ba53e6b4 1451 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1452 }
1453 }
6c80b18d 1454
d877f1e3 1455 tx_ring->producer = producer;
5dc16268 1456 adapter->stats.txbytes += skb->len;
6c80b18d 1457
d877f1e3 1458 netxen_nic_update_cmd_producer(adapter, tx_ring, producer);
3d396eb1 1459
ba53e6b4 1460 adapter->stats.xmitcalled++;
3d396eb1
AK		 1461 netdev->trans_start = jiffies;
1462
3d396eb1 1463 return NETDEV_TX_OK;
6f703406
DP		 1464
1465drop_packet:
1466 adapter->stats.txdropped++;
1467 dev_kfree_skb_any(skb);
1468 return NETDEV_TX_OK;
3d396eb1
AK		 1469}
1470
a97342f9
DP		 1471static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1472{
1473 struct net_device *netdev = adapter->netdev;
1474 uint32_t temp, temp_state, temp_val;
1475 int rv = 0;
1476
f98a9f69 1477 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1478
1479 temp_state = nx_get_temp_state(temp);
1480 temp_val = nx_get_temp_val(temp);
1481
1482 if (temp_state == NX_TEMP_PANIC) {
1483 printk(KERN_ALERT
1484 "%s: Device temperature %d degrees C exceeds"
1485 " maximum allowed. Hardware has been shut down.\n",
1486 netxen_nic_driver_name, temp_val);
1487
1488 netif_carrier_off(netdev);
1489 netif_stop_queue(netdev);
1490 rv = 1;
1491 } else if (temp_state == NX_TEMP_WARN) {
1492 if (adapter->temp == NX_TEMP_NORMAL) {
1493 printk(KERN_ALERT
1494 "%s: Device temperature %d degrees C "
1495 "exceeds operating range."
1496 " Immediate action needed.\n",
1497 netxen_nic_driver_name, temp_val);
1498 }
1499 } else {
1500 if (adapter->temp == NX_TEMP_WARN) {
1501 printk(KERN_INFO
1502 "%s: Device temperature is now %d degrees C"
1503 " in normal range.\n", netxen_nic_driver_name,
1504 temp_val);
1505 }
1506 }
1507 adapter->temp = temp_state;
1508 return rv;
1509}
1510
3bf26ce3 1511void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1512{
1513 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1514
1515 if (adapter->ahw.linkup && !linkup) {
1516 printk(KERN_INFO "%s: %s NIC Link is down\n",
1517 netxen_nic_driver_name, netdev->name);
1518 adapter->ahw.linkup = 0;
1519 if (netif_running(netdev)) {
1520 netif_carrier_off(netdev);
1521 netif_stop_queue(netdev);
1522 }
c7860a2a 1523
3bf26ce3
DP		 1524 if (!adapter->has_link_events)
1525 netxen_nic_set_link_parameters(adapter);
1526
a97342f9
DP		 1527 } else if (!adapter->ahw.linkup && linkup) {
1528 printk(KERN_INFO "%s: %s NIC Link is up\n",
1529 netxen_nic_driver_name, netdev->name);
1530 adapter->ahw.linkup = 1;
1531 if (netif_running(netdev)) {
1532 netif_carrier_on(netdev);
1533 netif_wake_queue(netdev);
1534 }
c7860a2a 1535
3bf26ce3
DP		 1536 if (!adapter->has_link_events)
1537 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1538 }
1539}
1540
3bf26ce3
DP		 1541static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1542{
1543 u32 val, port, linkup;
1544
1545 port = adapter->physical_port;
1546
1547 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1548 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1549 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1550 linkup = (val == XG_LINK_UP_P3);
1551 } else {
f98a9f69 1552 val = NXRD32(adapter, CRB_XG_STATE);
3bf26ce3
DP		 1553 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1554 linkup = (val >> port) & 1;
1555 else {
1556 val = (val >> port*8) & 0xff;
1557 linkup = (val == XG_LINK_UP);
1558 }
1559 }
1560
1561 netxen_advert_link_change(adapter, linkup);
1562}
1563
3d396eb1
AK		 1564static void netxen_watchdog(unsigned long v)
1565{
1566 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1567
1568 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1569}
1570
a97342f9
DP		 1571void netxen_watchdog_task(struct work_struct *work)
1572{
1573 struct netxen_adapter *adapter =
1574 container_of(work, struct netxen_adapter, watchdog_task);
1575
1576 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1577 return;
1578
3bf26ce3
DP		 1579 if (!adapter->has_link_events)
1580 netxen_nic_handle_phy_intr(adapter);
a97342f9 1581
922c4f2c
DP		 1582 if (netif_running(adapter->netdev))
1583 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1584}
1585
3d396eb1
AK		 1586static void netxen_tx_timeout(struct net_device *netdev)
1587{
3176ff3e
MT		 1588 struct netxen_adapter *adapter = (struct netxen_adapter *)
1589 netdev_priv(netdev);
1590 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1591}
1592
6d5aefb8 1593static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1594{
4790654c 1595 struct netxen_adapter *adapter =
3176ff3e 1596 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1
AK		 1597
1598 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1599 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1600
d8b100c5 1601 netxen_napi_disable(adapter);
ba53e6b4 1602
6c80b18d 1603 adapter->netdev->trans_start = jiffies;
ba53e6b4 1604
d8b100c5 1605 netxen_napi_enable(adapter);
6c80b18d 1606 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1607}
1608
a97342f9
DP		 1609struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1610{
1611 struct netxen_adapter *adapter = netdev_priv(netdev);
1612 struct net_device_stats *stats = &adapter->net_stats;
1613
1614 memset(stats, 0, sizeof(*stats));
1615
a97342f9 1616 stats->rx_packets = adapter->stats.no_rcv;
e98e3350 1617 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1618 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1619 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1620 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1621 stats->tx_dropped = adapter->stats.txdropped;
1622
1623 return stats;
1624}
1625
e4c93c81 1626static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1627{
d8b100c5
DP		 1628 struct nx_host_sds_ring *sds_ring = data;
1629 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1630 u32 status = 0;
1631
1632 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1633
1634 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1635 return IRQ_NONE;
e01872af 1636
d71e1be8
DP		 1637 if (adapter->ahw.revision_id >= NX_P3_B1) {
1638 /* check interrupt state machine, to be sure */
1639 status = adapter->pci_read_immediate(adapter,
1640 ISR_INT_STATE_REG);
1641 if (!ISR_LEGACY_INT_TRIGGERED(status))
1642 return IRQ_NONE;
1643
092bc571
DP		 1644 } else {
1645 unsigned long our_int = 0;
d71e1be8 1646
f98a9f69 1647 our_int = NXRD32(adapter, CRB_INT_VECTOR);
092bc571 1648
d71e1be8 1649 /* not our interrupt */
092bc571 1650 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1651 return IRQ_NONE;
1652
092bc571 1653 /* claim interrupt */
f98a9f69 1654 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1655 }
1656
092bc571
DP		 1657 /* clear interrupt */
1658 if (adapter->fw_major < 4)
d8b100c5 1659 netxen_nic_disable_int(sds_ring);
092bc571
DP		 1660
1661 adapter->pci_write_immediate(adapter,
1662 adapter->legacy_intr.tgt_status_reg,
1663 0xffffffff);
1664 /* read twice to ensure write is flushed */
1665 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1666 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1667
d8b100c5 1668 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1669
1670 return IRQ_HANDLED;
1671}
1672
e4c93c81 1673static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1674{
d8b100c5
DP		 1675 struct nx_host_sds_ring *sds_ring = data;
1676 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1677
092bc571
DP		 1678 /* clear interrupt */
1679 adapter->pci_write_immediate(adapter,
1680 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1681
d8b100c5 1682 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1683 return IRQ_HANDLED;
1684}
1685
b3df68f8
DP		 1686static irqreturn_t netxen_msix_intr(int irq, void *data)
1687{
d8b100c5 1688 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1689
d8b100c5 1690 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1691 return IRQ_HANDLED;
1692}
1693
bea3348e 1694static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1695{
d8b100c5
DP		 1696 struct nx_host_sds_ring *sds_ring =
1697 container_of(napi, struct nx_host_sds_ring, napi);
1698
1699 struct netxen_adapter *adapter = sds_ring->adapter;
1700
05aaa02d 1701 int tx_complete;
bea3348e 1702 int work_done;
3d396eb1 1703
05aaa02d 1704 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1705
d8b100c5 1706 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 1707
05aaa02d 1708 if ((work_done < budget) && tx_complete) {
d8b100c5
DP		 1709 napi_complete(&sds_ring->napi);
1710 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 1711 }
1712
bea3348e 1713 return work_done;
3d396eb1
AK		 1714}
1715
1716#ifdef CONFIG_NET_POLL_CONTROLLER
1717static void netxen_nic_poll_controller(struct net_device *netdev)
1718{
3176ff3e 1719 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1720 disable_irq(adapter->irq);
1494a814 1721 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1722 enable_irq(adapter->irq);
1723}
1724#endif
3d396eb1
AK		 1725
1726static struct pci_driver netxen_driver = {
1727 .name = netxen_nic_driver_name,
1728 .id_table = netxen_pci_tbl,
1729 .probe = netxen_nic_probe,
0b72e659
DP		 1730 .remove = __devexit_p(netxen_nic_remove),
1731 .suspend = netxen_nic_suspend,
1732 .resume = netxen_nic_resume
3d396eb1
AK		 1733};
1734
1735/* Driver Registration on NetXen card */
1736
1737static int __init netxen_init_module(void)
1738{
ff4fbd43
DP		 1739 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1740
79ea13ce 1741 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1742 return -ENOMEM;
1743
184231bd 1744 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1745}
1746
1747module_init(netxen_init_module);
1748
1749static void __exit netxen_exit_module(void)
1750{
3d396eb1 1751 pci_unregister_driver(&netxen_driver);
9de06610 1752 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1753}
1754
1755module_exit(netxen_exit_module);
Linux 6.x block layer and io_uring tree(s)