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netxen: async link event handling
[mirror_ubuntu-focal-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{
3ce06a32 112 adapter->pci_write_normalize(adapter,
d877f1e3 113 tx_ring->crb_cmd_producer, producer);
3176ff3e
MT		 114}
115
7830b22c
DP		 116static uint32_t crb_cmd_consumer[4] = {
117 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
118 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
119};
120
3ce06a32
DP		 121static inline void
122netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
d877f1e3 123 struct nx_host_tx_ring *tx_ring, u32 consumer)
3176ff3e 124{
3ce06a32 125 adapter->pci_write_normalize(adapter,
d877f1e3 126 tx_ring->crb_cmd_consumer, consumer);
3176ff3e
MT		 127}
128
2956640d 129static uint32_t msi_tgt_status[8] = {
443be796 130 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 131 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
132 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
133 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 134};
135
2956640d
DP		 136static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
137
d8b100c5 138static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 139{
d8b100c5
DP		 140 struct netxen_adapter *adapter = sds_ring->adapter;
141
142 adapter->pci_write_normalize(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 143}
144
d8b100c5 145static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 146{
d8b100c5
DP		 147 struct netxen_adapter *adapter = sds_ring->adapter;
148
149 adapter->pci_write_normalize(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 150
092bc571
DP		 151 if (!NETXEN_IS_MSI_FAMILY(adapter))
152 adapter->pci_write_immediate(adapter,
153 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
4638aef1
SH		 154}
155
d8b100c5
DP		 156static void
157netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
158{
159 int ring;
160 struct nx_host_sds_ring *sds_ring;
161 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
162
163 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
164 adapter->max_sds_rings = (num_online_cpus() >= 4) ? 4 : 2;
165 else
166 adapter->max_sds_rings = 1;
167
168 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
169 sds_ring = &recv_ctx->sds_rings[ring];
170 netif_napi_add(netdev, &sds_ring->napi,
171 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
172 }
173}
174
175static void
176netxen_napi_enable(struct netxen_adapter *adapter)
177{
178 int ring;
179 struct nx_host_sds_ring *sds_ring;
180 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
181
182 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
183 sds_ring = &recv_ctx->sds_rings[ring];
184 napi_enable(&sds_ring->napi);
185 netxen_nic_enable_int(sds_ring);
186 }
187}
188
189static void
190netxen_napi_disable(struct netxen_adapter *adapter)
191{
192 int ring;
193 struct nx_host_sds_ring *sds_ring;
194 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
195
196 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
197 sds_ring = &recv_ctx->sds_rings[ring];
198 netxen_nic_disable_int(sds_ring);
199 napi_disable(&sds_ring->napi);
200 }
201}
202
2956640d
DP		 203static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
204{
205 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 206 uint64_t mask, cmask;
207
208 adapter->pci_using_dac = 0;
2956640d 209
6afd142f 210 mask = DMA_BIT_MASK(32);
2956640d
DP		 211 /*
212 * Consistent DMA mask is set to 32 bit because it cannot be set to
213 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
214 * come off this pool.
215 */
6afd142f 216 cmask = DMA_BIT_MASK(32);
1f434f63
DP		 217
218#ifndef CONFIG_IA64
219 if (revision_id >= NX_P3_B0)
6afd142f 220 mask = DMA_BIT_MASK(39);
1f434f63 221 else if (revision_id == NX_P2_C1)
6afd142f 222 mask = DMA_BIT_MASK(35);
1f434f63 223#endif
2956640d 224 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 225 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 226 adapter->pci_using_dac = 1;
227 return 0;
228 }
2956640d 229
1f434f63
DP		 230 return -EIO;
231}
232
233/* Update addressable range if firmware supports it */
234static int
235nx_update_dma_mask(struct netxen_adapter *adapter)
236{
237 int change, shift, err;
238 uint64_t mask, old_mask;
239 struct pci_dev *pdev = adapter->pdev;
240
241 change = 0;
242
243 shift = netxen_nic_reg_read(adapter, CRB_DMA_SHIFT);
244 if (shift >= 32)
245 return 0;
246
247 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
248 change = 1;
249 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
250 change = 1;
251
252 if (change) {
253 old_mask = pdev->dma_mask;
254 mask = (1ULL<<(32+shift)) - 1;
255
256 err = pci_set_dma_mask(pdev, mask);
257 if (err)
258 return pci_set_dma_mask(pdev, old_mask);
2956640d
DP		 259 }
260
2956640d
DP		 261 return 0;
262}
263
264static void netxen_check_options(struct netxen_adapter *adapter)
265{
438627c7
DP		 266 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
267 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
268 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
269 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
2956640d 270
438627c7 271 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
c7860a2a 272 adapter->msix_supported = !!use_msi_x;
438627c7 273 else
2956640d 274 adapter->msix_supported = 0;
2956640d 275
438627c7
DP		 276 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
277 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
278 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
2956640d 279
2956640d
DP		 280 return;
281}
282
283static int
284netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
285{
27c915a4 286 u32 val, timeout;
2956640d
DP		 287
288 if (first_boot == 0x55555555) {
289 /* This is the first boot after power up */
27c915a4
DP		 290 adapter->pci_write_normalize(adapter,
291 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
292
293 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
294 return 0;
2956640d
DP		 295
296 /* PCI bus master workaround */
297 adapter->hw_read_wx(adapter,
298 NETXEN_PCIE_REG(0x4), &first_boot, 4);
299 if (!(first_boot & 0x4)) {
300 first_boot |= 0x4;
301 adapter->hw_write_wx(adapter,
302 NETXEN_PCIE_REG(0x4), &first_boot, 4);
303 adapter->hw_read_wx(adapter,
304 NETXEN_PCIE_REG(0x4), &first_boot, 4);
305 }
306
307 /* This is the first boot after power up */
308 adapter->hw_read_wx(adapter,
309 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
310 if (first_boot != 0x80000f) {
311 /* clear the register for future unloads/loads */
312 adapter->pci_write_normalize(adapter,
313 NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 314 return -EIO;
2956640d
DP		 315 }
316
27c915a4
DP		 317 /* Start P2 boot loader */
318 val = adapter->pci_read_normalize(adapter,
319 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
320 adapter->pci_write_normalize(adapter,
321 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
322 timeout = 0;
323 do {
324 msleep(1);
325 val = adapter->pci_read_normalize(adapter,
326 NETXEN_CAM_RAM(0x1fc));
327
328 if (++timeout > 5000)
329 return -EIO;
330
331 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 332 }
27c915a4 333 return 0;
2956640d
DP		 334}
335
336static void netxen_set_port_mode(struct netxen_adapter *adapter)
337{
338 u32 val, data;
339
1e2d0059 340 val = adapter->ahw.board_type;
2956640d
DP		 341 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
342 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
343 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
344 data = NETXEN_PORT_MODE_802_3_AP;
345 adapter->hw_write_wx(adapter,
346 NETXEN_PORT_MODE_ADDR, &data, 4);
347 } else if (port_mode == NETXEN_PORT_MODE_XG) {
348 data = NETXEN_PORT_MODE_XG;
349 adapter->hw_write_wx(adapter,
350 NETXEN_PORT_MODE_ADDR, &data, 4);
351 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
352 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
353 adapter->hw_write_wx(adapter,
354 NETXEN_PORT_MODE_ADDR, &data, 4);
355 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
356 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
357 adapter->hw_write_wx(adapter,
358 NETXEN_PORT_MODE_ADDR, &data, 4);
359 } else {
360 data = NETXEN_PORT_MODE_AUTO_NEG;
361 adapter->hw_write_wx(adapter,
362 NETXEN_PORT_MODE_ADDR, &data, 4);
363 }
364
365 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
366 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
367 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
368 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
369 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
370 }
371 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
372 &wol_port_mode, 4);
373 }
374}
375
2956640d
DP		 376static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
377{
378 u32 control;
379 int pos;
380
381 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
382 if (pos) {
383 pci_read_config_dword(pdev, pos, &control);
384 if (enable)
385 control |= PCI_MSIX_FLAGS_ENABLE;
386 else
387 control = 0;
388 pci_write_config_dword(pdev, pos, control);
389 }
390}
391
392static void netxen_init_msix_entries(struct netxen_adapter *adapter)
393{
394 int i;
395
396 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
397 adapter->msix_entries[i].entry = i;
398}
399
9dc28efe
DP		 400static int
401netxen_read_mac_addr(struct netxen_adapter *adapter)
402{
403 int i;
404 unsigned char *p;
405 __le64 mac_addr;
9dc28efe
DP		 406 struct net_device *netdev = adapter->netdev;
407 struct pci_dev *pdev = adapter->pdev;
408
9dc28efe
DP		 409 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
410 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
411 return -EIO;
412 } else {
413 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
414 return -EIO;
415 }
416
417 p = (unsigned char *)&mac_addr;
418 for (i = 0; i < 6; i++)
419 netdev->dev_addr[i] = *(p + 5 - i);
420
421 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
422
423 /* set station address */
424
e174961c
JB		 425 if (!is_valid_ether_addr(netdev->perm_addr))
426 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
427 else
9dc28efe
DP		 428 adapter->macaddr_set(adapter, netdev->dev_addr);
429
430 return 0;
431}
432
1abd266f
SH		 433static void netxen_set_multicast_list(struct net_device *dev)
434{
435 struct netxen_adapter *adapter = netdev_priv(dev);
436
437 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
438 netxen_p3_nic_set_multi(dev);
439 else
440 netxen_p2_nic_set_multi(dev);
441}
442
443static const struct net_device_ops netxen_netdev_ops = {
444 .ndo_open = netxen_nic_open,
445 .ndo_stop = netxen_nic_close,
446 .ndo_start_xmit = netxen_nic_xmit_frame,
447 .ndo_get_stats = netxen_nic_get_stats,
448 .ndo_validate_addr = eth_validate_addr,
449 .ndo_set_multicast_list = netxen_set_multicast_list,
450 .ndo_set_mac_address = netxen_nic_set_mac,
451 .ndo_change_mtu = netxen_nic_change_mtu,
452 .ndo_tx_timeout = netxen_tx_timeout,
453#ifdef CONFIG_NET_POLL_CONTROLLER
454 .ndo_poll_controller = netxen_nic_poll_controller,
455#endif
456};
457
97daee83
DP		 458static void
459netxen_setup_intr(struct netxen_adapter *adapter)
460{
461 struct netxen_legacy_intr_set *legacy_intrp;
462 struct pci_dev *pdev = adapter->pdev;
463
464 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 465
466 if (adapter->ahw.revision_id >= NX_P3_B0)
467 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
468 else
469 legacy_intrp = &legacy_intr[0];
470 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
471 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
472 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
473 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
474
475 netxen_set_msix_bit(pdev, 0);
476
477 if (adapter->msix_supported) {
478
479 netxen_init_msix_entries(adapter);
480 if (pci_enable_msix(pdev, adapter->msix_entries,
481 MSIX_ENTRIES_PER_ADAPTER))
482 goto request_msi;
483
484 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
485 netxen_set_msix_bit(pdev, 1);
486 dev_info(&pdev->dev, "using msi-x interrupts\n");
487
488 } else {
489request_msi:
490 if (use_msi && !pci_enable_msi(pdev)) {
491 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
492 dev_info(&pdev->dev, "using msi interrupts\n");
493 } else
494 dev_info(&pdev->dev, "using legacy interrupts\n");
d8b100c5 495 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 496 }
497}
498
499static void
500netxen_teardown_intr(struct netxen_adapter *adapter)
501{
502 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
503 pci_disable_msix(adapter->pdev);
504 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
505 pci_disable_msi(adapter->pdev);
506}
507
508static void
509netxen_cleanup_pci_map(struct netxen_adapter *adapter)
510{
511 if (adapter->ahw.db_base != NULL)
512 iounmap(adapter->ahw.db_base);
513 if (adapter->ahw.pci_base0 != NULL)
514 iounmap(adapter->ahw.pci_base0);
515 if (adapter->ahw.pci_base1 != NULL)
516 iounmap(adapter->ahw.pci_base1);
517 if (adapter->ahw.pci_base2 != NULL)
518 iounmap(adapter->ahw.pci_base2);
519}
520
521static int
522netxen_setup_pci_map(struct netxen_adapter *adapter)
523{
524 void __iomem *mem_ptr0 = NULL;
525 void __iomem *mem_ptr1 = NULL;
526 void __iomem *mem_ptr2 = NULL;
527 void __iomem *db_ptr = NULL;
528
97daee83
DP		 529 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
530
531 struct pci_dev *pdev = adapter->pdev;
532 int pci_func = adapter->ahw.pci_func;
533
534 int err = 0;
535
536 /*
537 * Set the CRB window to invalid. If any register in window 0 is
538 * accessed it should set the window to 0 and then reset it to 1.
539 */
540 adapter->curr_window = 255;
541 adapter->ahw.qdr_sn_window = -1;
542 adapter->ahw.ddr_mn_window = -1;
543
544 /* remap phys address */
545 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
546 mem_len = pci_resource_len(pdev, 0);
547 pci_len0 = 0;
548
549 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
550 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
551 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
552 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
553 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
554 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
555 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
556 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
557 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
558
559 /* 128 Meg of memory */
560 if (mem_len == NETXEN_PCI_128MB_SIZE) {
561 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
562 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
563 SECOND_PAGE_GROUP_SIZE);
564 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
565 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 566 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
567 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
568 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
569 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 570 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
571 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
572 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
573 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
574 adapter->pci_write_immediate =
575 netxen_nic_pci_write_immediate_2M;
576 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
577 adapter->pci_write_normalize =
578 netxen_nic_pci_write_normalize_2M;
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
ba599d4f
DP		 661 first_boot = adapter->pci_read_normalize(adapter,
662 NETXEN_CAM_RAM(0x1fc));
663
664 err = netxen_check_hw_init(adapter, first_boot);
665 if (err) {
666 dev_err(&pdev->dev, "error in init HW init sequence\n");
667 return err;
668 }
669
ba599d4f
DP		 670 if (first_boot != 0x55555555) {
671 adapter->pci_write_normalize(adapter,
672 CRB_CMDPEG_STATE, 0);
673 netxen_pinit_from_rom(adapter, 0);
674 msleep(1);
675 }
567c6c4e 676
1f434f63 677 netxen_nic_reg_write(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 678 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
679 netxen_set_port_mode(adapter);
680
ba599d4f
DP		 681 netxen_load_firmware(adapter);
682
683 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
684
685 /* Initialize multicast addr pool owners */
686 val = 0x7654;
1e2d0059 687 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f
DP		 688 val |= 0x0f000000;
689 netxen_crb_writelit_adapter(adapter,
690 NETXEN_MAC_ADDR_CNTL_REG, val);
691
692 }
693
694 err = netxen_initialize_adapter_offload(adapter);
695 if (err)
696 return err;
697
698 /*
699 * Tell the hardware our version number.
700 */
701 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
702 | ((_NETXEN_NIC_LINUX_MINOR << 8))
703 | (_NETXEN_NIC_LINUX_SUBVERSION);
704 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, val);
705
706 /* Handshake with the card before we register the devices. */
707 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
708 if (err) {
709 netxen_free_adapter_offload(adapter);
710 return err;
711 }
712
713 return 0;
714}
715
9f5bc7f1
DP		 716static int
717netxen_nic_request_irq(struct netxen_adapter *adapter)
718{
719 irq_handler_t handler;
d8b100c5
DP		 720 struct nx_host_sds_ring *sds_ring;
721 int err, ring;
722
9f5bc7f1
DP		 723 unsigned long flags = IRQF_SAMPLE_RANDOM;
724 struct net_device *netdev = adapter->netdev;
d8b100c5 725 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 726
9f5bc7f1
DP		 727 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
728 handler = netxen_msix_intr;
729 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
730 handler = netxen_msi_intr;
731 else {
732 flags |= IRQF_SHARED;
733 handler = netxen_intr;
734 }
735 adapter->irq = netdev->irq;
736
d8b100c5
DP		 737 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
738 sds_ring = &recv_ctx->sds_rings[ring];
739 sprintf(sds_ring->name, "%16s[%d]", netdev->name, ring);
740 err = request_irq(sds_ring->irq, handler,
741 flags, sds_ring->name, sds_ring);
742 if (err)
743 return err;
744 }
745
746 return 0;
747}
748
749static void
750netxen_nic_free_irq(struct netxen_adapter *adapter)
751{
752 int ring;
753 struct nx_host_sds_ring *sds_ring;
754
755 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
756
757 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
758 sds_ring = &recv_ctx->sds_rings[ring];
759 free_irq(sds_ring->irq, sds_ring);
760 }
9f5bc7f1
DP		 761}
762
763static int
764netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
765{
766 int err;
767
768 err = adapter->init_port(adapter, adapter->physical_port);
769 if (err) {
770 printk(KERN_ERR "%s: Failed to initialize port %d\n",
771 netxen_nic_driver_name, adapter->portnum);
772 return err;
773 }
774 adapter->macaddr_set(adapter, netdev->dev_addr);
775
776 netxen_nic_set_link_parameters(adapter);
777
778 netxen_set_multicast_list(netdev);
779 if (adapter->set_mtu)
780 adapter->set_mtu(adapter, netdev->mtu);
781
782 adapter->ahw.linkup = 0;
783 mod_timer(&adapter->watchdog_timer, jiffies);
784
d8b100c5
DP		 785 netxen_napi_enable(adapter);
786
787 if (adapter->max_sds_rings > 1)
788 netxen_config_rss(adapter, 1);
9f5bc7f1 789
3bf26ce3
DP		 790 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
791 netxen_linkevent_request(adapter, 1);
792
9f5bc7f1
DP		 793 return 0;
794}
795
796static void
797netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
798{
799 netif_carrier_off(netdev);
800 netif_stop_queue(netdev);
d8b100c5 801 netxen_napi_disable(adapter);
9f5bc7f1
DP		 802
803 if (adapter->stop_port)
804 adapter->stop_port(adapter);
805
9f5bc7f1
DP		 806 netxen_release_tx_buffers(adapter);
807
808 FLUSH_SCHEDULED_WORK();
809 del_timer_sync(&adapter->watchdog_timer);
810}
811
812
813static int
814netxen_nic_attach(struct netxen_adapter *adapter)
815{
816 struct net_device *netdev = adapter->netdev;
817 struct pci_dev *pdev = adapter->pdev;
becf46a0 818 int err, ring;
d8b100c5 819 struct nx_host_rds_ring *rds_ring;
d877f1e3 820 struct nx_host_tx_ring *tx_ring;
9f5bc7f1
DP		 821
822 err = netxen_init_firmware(adapter);
823 if (err != 0) {
824 printk(KERN_ERR "Failed to init firmware\n");
825 return -EIO;
826 }
827
828 if (adapter->fw_major < 4)
829 adapter->max_rds_rings = 3;
830 else
831 adapter->max_rds_rings = 2;
832
833 err = netxen_alloc_sw_resources(adapter);
834 if (err) {
835 printk(KERN_ERR "%s: Error in setting sw resources\n",
836 netdev->name);
837 return err;
838 }
839
840 netxen_nic_clear_stats(adapter);
841
842 err = netxen_alloc_hw_resources(adapter);
843 if (err) {
844 printk(KERN_ERR "%s: Error in setting hw resources\n",
845 netdev->name);
846 goto err_out_free_sw;
847 }
848
849 if (adapter->fw_major < 4) {
d877f1e3
DP		 850 tx_ring = &adapter->tx_ring;
851 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
852 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
9f5bc7f1 853
d877f1e3
DP		 854 netxen_nic_update_cmd_producer(adapter, tx_ring, 0);
855 netxen_nic_update_cmd_consumer(adapter, tx_ring, 0);
9f5bc7f1
DP		 856 }
857
d8b100c5
DP		 858 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
859 rds_ring = &adapter->recv_ctx.rds_rings[ring];
860 netxen_post_rx_buffers(adapter, ring, rds_ring);
861 }
9f5bc7f1
DP		 862
863 err = netxen_nic_request_irq(adapter);
864 if (err) {
865 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
866 netdev->name);
867 goto err_out_free_rxbuf;
868 }
869
870 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
871 return 0;
872
873err_out_free_rxbuf:
874 netxen_release_rx_buffers(adapter);
875 netxen_free_hw_resources(adapter);
876err_out_free_sw:
877 netxen_free_sw_resources(adapter);
878 return err;
879}
880
881static void
882netxen_nic_detach(struct netxen_adapter *adapter)
883{
d8b100c5 884 netxen_nic_free_irq(adapter);
9f5bc7f1
DP		 885
886 netxen_release_rx_buffers(adapter);
887 netxen_free_hw_resources(adapter);
888 netxen_free_sw_resources(adapter);
889
890 adapter->is_up = 0;
891}
892
3d396eb1
AK		 893static int __devinit
894netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
895{
896 struct net_device *netdev = NULL;
897 struct netxen_adapter *adapter = NULL;
2956640d 898 int i = 0, err;
3176ff3e 899 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 900 uint8_t revision_id;
3d396eb1 901
3176ff3e 902 if (pdev->class != 0x020000) {
dcd56fdb 903 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 904 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 905 return -ENODEV;
906 }
2956640d 907
11d89d63
DP		 908 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
909 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
910 "will not be enabled.\n",
911 NX_P3_A0, NX_P3_B1);
912 return -ENODEV;
913 }
914
3d396eb1
AK		 915 if ((err = pci_enable_device(pdev)))
916 return err;
2956640d 917
3d396eb1
AK		 918 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
919 err = -ENODEV;
920 goto err_out_disable_pdev;
921 }
922
923 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
924 goto err_out_disable_pdev;
925
926 pci_set_master(pdev);
3176ff3e
MT		 927
928 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
929 if(!netdev) {
930 printk(KERN_ERR"%s: Failed to allocate memory for the "
931 "device block.Check system memory resource"
932 " usage.\n", netxen_nic_driver_name);
933 goto err_out_free_res;
934 }
935
3176ff3e
MT		 936 SET_NETDEV_DEV(netdev, &pdev->dev);
937
4cf1653a 938 adapter = netdev_priv(netdev);
2956640d
DP		 939 adapter->netdev = netdev;
940 adapter->pdev = pdev;
13ba9c77 941 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 942
943 revision_id = pdev->revision;
944 adapter->ahw.revision_id = revision_id;
945
946 err = nx_set_dma_mask(adapter, revision_id);
947 if (err)
948 goto err_out_free_netdev;
949
3ce06a32 950 rwlock_init(&adapter->adapter_lock);
d8b100c5 951 spin_lock_init(&adapter->tx_clean_lock);
3ce06a32 952
97daee83
DP		 953 err = netxen_setup_pci_map(adapter);
954 if (err)
6c80b18d 955 goto err_out_free_netdev;
3d396eb1 956
2d1a3bbd 957 /* This will be reset for mezz cards */
3176ff3e 958 adapter->portnum = pci_func_id;
200eef20 959 adapter->rx_csum = 1;
623621b0 960 adapter->mc_enabled = 0;
83821a07 961 if (NX_IS_REVISION_P3(revision_id))
2956640d 962 adapter->max_mc_count = 38;
83821a07 963 else
2956640d 964 adapter->max_mc_count = 16;
3176ff3e 965
1abd266f 966 netdev->netdev_ops = &netxen_netdev_ops;
05aaa02d 967 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 968
969 netxen_nic_change_mtu(netdev, netdev->mtu);
970
971 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1abd266f 972
cdff1036
DP		 973 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
974 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
975
cd1f8160 976 if (NX_IS_REVISION_P3(revision_id)) {
cdff1036
DP		 977 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
978 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
cd1f8160 979 }
3176ff3e 980
cdff1036 981 if (adapter->pci_using_dac) {
3176ff3e 982 netdev->features |= NETIF_F_HIGHDMA;
cdff1036
DP		 983 netdev->vlan_features |= NETIF_F_HIGHDMA;
984 }
3176ff3e 985
dcd56fdb
DP		 986 if (netxen_nic_get_board_info(adapter) != 0) {
987 printk("%s: Error getting board config info.\n",
2956640d 988 netxen_nic_driver_name);
dcd56fdb
DP		 989 err = -EIO;
990 goto err_out_iounmap;
991 }
6c80b18d 992
6c80b18d
MT		 993 netxen_initialize_adapter_ops(adapter);
994
13ba9c77 995 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 996 switch (adapter->ahw.board_type) {
dc515f2e
DP		 997 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
998 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
999 if (pci_func_id >= 2)
13ba9c77 1000 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1001 break;
1002 default:
1003 break;
1004 }
13ba9c77 1005
0b72e659
DP		 1006 err = netxen_start_firmware(adapter);
1007 if (err)
1008 goto err_out_iounmap;
2956640d 1009
1f434f63
DP		 1010 nx_update_dma_mask(adapter);
1011
1e2d0059 1012 netxen_nic_get_firmware_info(adapter);
d9e651bc 1013
3d396eb1 1014 /*
6c80b18d 1015 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1016 */
dcd56fdb 1017 adapter->physical_port = adapter->portnum;
044fad0d
DP		 1018 if (adapter->fw_major < 4) {
1019 i = adapter->pci_read_normalize(adapter,
1020 CRB_V2P(adapter->portnum));
1021 if (i != 0x55555555)
1022 adapter->physical_port = i;
1023 }
6c80b18d 1024
438627c7 1025 netxen_check_options(adapter);
2956640d 1026
97daee83 1027 netxen_setup_intr(adapter);
2956640d 1028
d8b100c5
DP		 1029 netdev->irq = adapter->msix_entries[0].vector;
1030
1031 netxen_napi_add(adapter, netdev);
2956640d 1032
2956640d 1033 init_timer(&adapter->watchdog_timer);
2956640d
DP		 1034 adapter->watchdog_timer.function = &netxen_watchdog;
1035 adapter->watchdog_timer.data = (unsigned long)adapter;
1036 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1037 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1038
9dc28efe
DP		 1039 err = netxen_read_mac_addr(adapter);
1040 if (err)
1041 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 1042
3176ff3e
MT		 1043 netif_carrier_off(netdev);
1044 netif_stop_queue(netdev);
1045
6c80b18d
MT		 1046 if ((err = register_netdev(netdev))) {
1047 printk(KERN_ERR "%s: register_netdev failed port #%d"
1048 " aborting\n", netxen_nic_driver_name,
1049 adapter->portnum);
1050 err = -EIO;
2956640d 1051 goto err_out_disable_msi;
6c80b18d
MT		 1052 }
1053
1054 pci_set_drvdata(pdev, adapter);
3d396eb1 1055
1e2d0059 1056 switch (adapter->ahw.port_type) {
2956640d
DP		 1057 case NETXEN_NIC_GBE:
1058 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1059 adapter->netdev->name);
1060 break;
1061 case NETXEN_NIC_XGBE:
1062 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1063 adapter->netdev->name);
1064 break;
3d396eb1 1065 }
3d396eb1 1066
2956640d
DP		 1067 return 0;
1068
1069err_out_disable_msi:
97daee83 1070 netxen_teardown_intr(adapter);
6c80b18d 1071
0b72e659 1072 netxen_free_adapter_offload(adapter);
3d396eb1 1073
2956640d 1074err_out_iounmap:
97daee83 1075 netxen_cleanup_pci_map(adapter);
cb8011ad 1076
6c80b18d
MT		 1077err_out_free_netdev:
1078 free_netdev(netdev);
1079
1080err_out_free_res:
3d396eb1 1081 pci_release_regions(pdev);
6c80b18d
MT		 1082
1083err_out_disable_pdev:
2956640d 1084 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1085 pci_disable_device(pdev);
1086 return err;
1087}
1088
1089static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1090{
1091 struct netxen_adapter *adapter;
3176ff3e 1092 struct net_device *netdev;
3d396eb1 1093
6c80b18d 1094 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1095 if (adapter == NULL)
1096 return;
1097
6c80b18d
MT		 1098 netdev = adapter->netdev;
1099
96acb6eb
DP		 1100 unregister_netdev(netdev);
1101
96acb6eb 1102 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1 1103 netxen_nic_detach(adapter);
06e9d9f9
DP		 1104
1105 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1106 netxen_p3_free_mac_list(adapter);
96acb6eb 1107 }
3d396eb1 1108
439b454e
DP		 1109 if (adapter->portnum == 0)
1110 netxen_free_adapter_offload(adapter);
96acb6eb 1111
97daee83 1112 netxen_teardown_intr(adapter);
3052246c 1113
97daee83 1114 netxen_cleanup_pci_map(adapter);
595e3fb8
MT		 1115
1116 pci_release_regions(pdev);
3052246c 1117 pci_disable_device(pdev);
595e3fb8
MT		 1118 pci_set_drvdata(pdev, NULL);
1119
6c80b18d 1120 free_netdev(netdev);
3d396eb1
AK		 1121}
1122
0b72e659
DP		 1123static int
1124netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1125{
1126
1127 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1128 struct net_device *netdev = adapter->netdev;
1129
1130 netif_device_detach(netdev);
1131
1132 if (netif_running(netdev))
1133 netxen_nic_down(adapter, netdev);
1134
1135 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1136 netxen_nic_detach(adapter);
1137
1138 pci_save_state(pdev);
1139
1140 if (netxen_nic_wol_supported(adapter)) {
1141 pci_enable_wake(pdev, PCI_D3cold, 1);
1142 pci_enable_wake(pdev, PCI_D3hot, 1);
1143 }
1144
1145 pci_disable_device(pdev);
1146 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1147
1148 return 0;
1149}
1150
1151static int
1152netxen_nic_resume(struct pci_dev *pdev)
1153{
1154 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1155 struct net_device *netdev = adapter->netdev;
1156 int err;
1157
1158 pci_set_power_state(pdev, PCI_D0);
1159 pci_restore_state(pdev);
1160
1161 err = pci_enable_device(pdev);
1162 if (err)
1163 return err;
1164
1165 adapter->curr_window = 255;
1166
1167 err = netxen_start_firmware(adapter);
1168 if (err) {
1169 dev_err(&pdev->dev, "failed to start firmware\n");
1170 return err;
1171 }
1172
1173 if (netif_running(netdev)) {
1174 err = netxen_nic_attach(adapter);
1175 if (err)
1176 return err;
1177
1178 err = netxen_nic_up(adapter, netdev);
1179 if (err)
1180 return err;
1181
1182 netif_device_attach(netdev);
1183 }
1184
1185 return 0;
1186}
1187
3d396eb1
AK		 1188static int netxen_nic_open(struct net_device *netdev)
1189{
4cf1653a 1190 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1191 int err = 0;
3d396eb1 1192
dcd56fdb
DP		 1193 if (adapter->driver_mismatch)
1194 return -EIO;
1195
3d396eb1 1196 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1
DP		 1197 err = netxen_nic_attach(adapter);
1198 if (err)
3d396eb1 1199 return err;
ed25ffa1 1200 }
2956640d 1201
9f5bc7f1
DP		 1202 err = netxen_nic_up(adapter, netdev);
1203 if (err)
1204 goto err_out;
05aaa02d 1205
dcd56fdb 1206 netif_start_queue(netdev);
3d396eb1
AK		 1207
1208 return 0;
2956640d 1209
9f5bc7f1
DP		 1210err_out:
1211 netxen_nic_detach(adapter);
2956640d 1212 return err;
3d396eb1
AK		 1213}
1214
1215/*
1216 * netxen_nic_close - Disables a network interface entry point
1217 */
1218static int netxen_nic_close(struct net_device *netdev)
1219{
3176ff3e 1220 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1221
9f5bc7f1 1222 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1223 return 0;
1224}
1225
391587c3 1226static bool netxen_tso_check(struct net_device *netdev,
cd1f8160
DP		 1227 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1228{
391587c3
DP		 1229 bool tso = false;
1230 u8 opcode = TX_ETHER_PKT;
cdff1036
DP		 1231 __be16 protocol = skb->protocol;
1232 u16 flags = 0;
1233
09640e63 1234 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
cdff1036
DP		 1235 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1236 protocol = vh->h_vlan_encapsulated_proto;
1237 flags = FLAGS_VLAN_TAGGED;
1238 }
cd1f8160 1239
391587c3
DP		 1240 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1241 skb_shinfo(skb)->gso_size > 0) {
1242
1243 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1244 desc->total_hdr_length =
1245 skb_transport_offset(skb) + tcp_hdrlen(skb);
1246
09640e63 1247 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3
DP		 1248 TX_TCP_LSO6 : TX_TCP_LSO;
1249 tso = true;
cd1f8160
DP		 1250
1251 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1252 u8 l4proto;
1253
09640e63 1254 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1255 l4proto = ip_hdr(skb)->protocol;
1256
1257 if (l4proto == IPPROTO_TCP)
1258 opcode = TX_TCP_PKT;
1259 else if(l4proto == IPPROTO_UDP)
1260 opcode = TX_UDP_PKT;
09640e63 1261 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1262 l4proto = ipv6_hdr(skb)->nexthdr;
1263
1264 if (l4proto == IPPROTO_TCP)
1265 opcode = TX_TCPV6_PKT;
1266 else if(l4proto == IPPROTO_UDP)
1267 opcode = TX_UDPV6_PKT;
1268 }
cd1f8160
DP		 1269 }
1270 desc->tcp_hdr_offset = skb_transport_offset(skb);
1271 desc->ip_hdr_offset = skb_network_offset(skb);
cdff1036 1272 netxen_set_tx_flags_opcode(desc, flags, opcode);
391587c3 1273 return tso;
cd1f8160
DP		 1274}
1275
6f703406
DP		 1276static void
1277netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1278 struct netxen_cmd_buffer *pbuf, int last)
1279{
1280 int k;
1281 struct netxen_skb_frag *buffrag;
1282
1283 buffrag = &pbuf->frag_array[0];
1284 pci_unmap_single(pdev, buffrag->dma,
1285 buffrag->length, PCI_DMA_TODEVICE);
1286
1287 for (k = 1; k < last; k++) {
1288 buffrag = &pbuf->frag_array[k];
1289 pci_unmap_page(pdev, buffrag->dma,
1290 buffrag->length, PCI_DMA_TODEVICE);
1291 }
1292}
1293
d32cc3d2
DP		 1294static inline void
1295netxen_clear_cmddesc(u64 *desc)
1296{
1297 int i;
1298 for (i = 0; i < 8; i++)
1299 desc[i] = 0ULL;
1300}
1301
1302static int
1303netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1304{
3176ff3e 1305 struct netxen_adapter *adapter = netdev_priv(netdev);
d877f1e3 1306 struct nx_host_tx_ring *tx_ring = &adapter->tx_ring;
3d396eb1 1307 unsigned int first_seg_len = skb->len - skb->data_len;
391587c3 1308 struct netxen_cmd_buffer *pbuf;
3d396eb1 1309 struct netxen_skb_frag *buffrag;
391587c3 1310 struct cmd_desc_type0 *hwdesc;
6f703406
DP		 1311 struct pci_dev *pdev = adapter->pdev;
1312 dma_addr_t temp_dma;
391587c3 1313 int i, k;
3d396eb1 1314
ba53e6b4 1315 u32 producer, consumer;
391587c3 1316 int frag_count, no_of_desc;
d877f1e3 1317 u32 num_txd = tx_ring->num_desc;
391587c3 1318 bool is_tso = false;
3d396eb1 1319
3d396eb1
AK		 1320 frag_count = skb_shinfo(skb)->nr_frags + 1;
1321
d877f1e3 1322 /* 4 fragments per cmd des */
3d396eb1 1323 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1324
d877f1e3 1325 producer = tx_ring->producer;
ba53e6b4 1326 smp_mb();
d877f1e3 1327 consumer = tx_ring->sw_consumer;
ba53e6b4
DP		 1328 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1329 netif_stop_queue(netdev);
1330 smp_mb();
1331 return NETDEV_TX_BUSY;
53a01e00 1332 }
3d396eb1 1333
d877f1e3 1334 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1335 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1336 pbuf = &tx_ring->cmd_buf_arr[producer];
391587c3
DP		 1337
1338 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1339
3d396eb1 1340 pbuf->skb = skb;
3d396eb1 1341 pbuf->frag_count = frag_count;
3d396eb1 1342 buffrag = &pbuf->frag_array[0];
6f703406 1343 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
3d396eb1 1344 PCI_DMA_TODEVICE);
6f703406
DP		 1345 if (pci_dma_mapping_error(pdev, temp_dma))
1346 goto drop_packet;
1347
1348 buffrag->dma = temp_dma;
3d396eb1 1349 buffrag->length = first_seg_len;
391587c3
DP		 1350 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1351 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1352
d32cc3d2 1353 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
3d396eb1
AK		 1354 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1355
1356 for (i = 1, k = 1; i < frag_count; i++, k++) {
1357 struct skb_frag_struct *frag;
1358 int len, temp_len;
1359 unsigned long offset;
3d396eb1
AK		 1360
1361 /* move to next desc. if there is a need */
1362 if ((i & 0x3) == 0) {
1363 k = 0;
ba53e6b4 1364 producer = get_next_index(producer, num_txd);
d877f1e3 1365 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1366 netxen_clear_cmddesc((u64 *)hwdesc);
d877f1e3 1367 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1368 pbuf->skb = NULL;
3d396eb1
AK		 1369 }
1370 frag = &skb_shinfo(skb)->frags[i - 1];
1371 len = frag->size;
1372 offset = frag->page_offset;
1373
1374 temp_len = len;
6f703406 1375 temp_dma = pci_map_page(pdev, frag->page, offset,
3d396eb1 1376 len, PCI_DMA_TODEVICE);
6f703406
DP		 1377 if (pci_dma_mapping_error(pdev, temp_dma)) {
1378 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1379 goto drop_packet;
1380 }
3d396eb1
AK		 1381
1382 buffrag++;
1383 buffrag->dma = temp_dma;
1384 buffrag->length = temp_len;
1385
d32cc3d2 1386 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
3d396eb1
AK		 1387 switch (k) {
1388 case 0:
3d396eb1
AK		 1389 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1390 break;
1391 case 1:
3d396eb1
AK		 1392 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1393 break;
1394 case 2:
3d396eb1
AK		 1395 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1396 break;
1397 case 3:
3d396eb1
AK		 1398 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1399 break;
1400 }
1401 frag++;
1402 }
ba53e6b4 1403 producer = get_next_index(producer, num_txd);
3d396eb1 1404
3d396eb1
AK		 1405 /* For LSO, we need to copy the MAC/IP/TCP headers into
1406 * the descriptor ring
1407 */
391587c3 1408 if (is_tso) {
3d396eb1 1409 int hdr_len, first_hdr_len, more_hdr;
391587c3 1410 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
ed25ffa1
AK		 1411 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1412 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1413 more_hdr = 1;
1414 } else {
1415 first_hdr_len = hdr_len;
1416 more_hdr = 0;
1417 }
1418 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
d877f1e3
DP		 1419 hwdesc = &tx_ring->desc_head[producer];
1420 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1421 pbuf->skb = NULL;
3d396eb1
AK		 1422
1423 /* copy the first 64 bytes */
ed25ffa1 1424 memcpy(((void *)hwdesc) + 2,
3d396eb1 1425 (void *)(skb->data), first_hdr_len);
ba53e6b4 1426 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1427
1428 if (more_hdr) {
d877f1e3
DP		 1429 hwdesc = &tx_ring->desc_head[producer];
1430 pbuf = &tx_ring->cmd_buf_arr[producer];
53a01e00 1431 pbuf->skb = NULL;
3d396eb1
AK		 1432 /* copy the next 64 bytes - should be enough except
1433 * for pathological case
1434 */
d626f62b
ACM		 1435 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1436 hwdesc,
1437 (hdr_len -
1438 first_hdr_len));
ba53e6b4 1439 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1440 }
1441 }
6c80b18d 1442
d877f1e3 1443 tx_ring->producer = producer;
5dc16268 1444 adapter->stats.txbytes += skb->len;
6c80b18d 1445
d877f1e3 1446 netxen_nic_update_cmd_producer(adapter, tx_ring, producer);
3d396eb1 1447
ba53e6b4 1448 adapter->stats.xmitcalled++;
3d396eb1
AK		 1449 netdev->trans_start = jiffies;
1450
3d396eb1 1451 return NETDEV_TX_OK;
6f703406
DP		 1452
1453drop_packet:
1454 adapter->stats.txdropped++;
1455 dev_kfree_skb_any(skb);
1456 return NETDEV_TX_OK;
3d396eb1
AK		 1457}
1458
a97342f9
DP		 1459static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1460{
1461 struct net_device *netdev = adapter->netdev;
1462 uint32_t temp, temp_state, temp_val;
1463 int rv = 0;
1464
1465 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1466
1467 temp_state = nx_get_temp_state(temp);
1468 temp_val = nx_get_temp_val(temp);
1469
1470 if (temp_state == NX_TEMP_PANIC) {
1471 printk(KERN_ALERT
1472 "%s: Device temperature %d degrees C exceeds"
1473 " maximum allowed. Hardware has been shut down.\n",
1474 netxen_nic_driver_name, temp_val);
1475
1476 netif_carrier_off(netdev);
1477 netif_stop_queue(netdev);
1478 rv = 1;
1479 } else if (temp_state == NX_TEMP_WARN) {
1480 if (adapter->temp == NX_TEMP_NORMAL) {
1481 printk(KERN_ALERT
1482 "%s: Device temperature %d degrees C "
1483 "exceeds operating range."
1484 " Immediate action needed.\n",
1485 netxen_nic_driver_name, temp_val);
1486 }
1487 } else {
1488 if (adapter->temp == NX_TEMP_WARN) {
1489 printk(KERN_INFO
1490 "%s: Device temperature is now %d degrees C"
1491 " in normal range.\n", netxen_nic_driver_name,
1492 temp_val);
1493 }
1494 }
1495 adapter->temp = temp_state;
1496 return rv;
1497}
1498
3bf26ce3 1499void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1500{
1501 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1502
1503 if (adapter->ahw.linkup && !linkup) {
1504 printk(KERN_INFO "%s: %s NIC Link is down\n",
1505 netxen_nic_driver_name, netdev->name);
1506 adapter->ahw.linkup = 0;
1507 if (netif_running(netdev)) {
1508 netif_carrier_off(netdev);
1509 netif_stop_queue(netdev);
1510 }
c7860a2a 1511
3bf26ce3
DP		 1512 if (!adapter->has_link_events)
1513 netxen_nic_set_link_parameters(adapter);
1514
a97342f9
DP		 1515 } else if (!adapter->ahw.linkup && linkup) {
1516 printk(KERN_INFO "%s: %s NIC Link is up\n",
1517 netxen_nic_driver_name, netdev->name);
1518 adapter->ahw.linkup = 1;
1519 if (netif_running(netdev)) {
1520 netif_carrier_on(netdev);
1521 netif_wake_queue(netdev);
1522 }
c7860a2a 1523
3bf26ce3
DP		 1524 if (!adapter->has_link_events)
1525 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1526 }
1527}
1528
3bf26ce3
DP		 1529static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1530{
1531 u32 val, port, linkup;
1532
1533 port = adapter->physical_port;
1534
1535 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1536 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1537 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1538 linkup = (val == XG_LINK_UP_P3);
1539 } else {
1540 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1541 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1542 linkup = (val >> port) & 1;
1543 else {
1544 val = (val >> port*8) & 0xff;
1545 linkup = (val == XG_LINK_UP);
1546 }
1547 }
1548
1549 netxen_advert_link_change(adapter, linkup);
1550}
1551
3d396eb1
AK		 1552static void netxen_watchdog(unsigned long v)
1553{
1554 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1555
1556 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1557}
1558
a97342f9
DP		 1559void netxen_watchdog_task(struct work_struct *work)
1560{
1561 struct netxen_adapter *adapter =
1562 container_of(work, struct netxen_adapter, watchdog_task);
1563
1564 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1565 return;
1566
3bf26ce3
DP		 1567 if (!adapter->has_link_events)
1568 netxen_nic_handle_phy_intr(adapter);
a97342f9 1569
922c4f2c
DP		 1570 if (netif_running(adapter->netdev))
1571 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1572}
1573
3d396eb1
AK		 1574static void netxen_tx_timeout(struct net_device *netdev)
1575{
3176ff3e
MT		 1576 struct netxen_adapter *adapter = (struct netxen_adapter *)
1577 netdev_priv(netdev);
1578 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1579}
1580
6d5aefb8 1581static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1582{
4790654c 1583 struct netxen_adapter *adapter =
3176ff3e 1584 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1
AK		 1585
1586 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1587 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1588
d8b100c5 1589 netxen_napi_disable(adapter);
ba53e6b4 1590
6c80b18d 1591 adapter->netdev->trans_start = jiffies;
ba53e6b4 1592
d8b100c5 1593 netxen_napi_enable(adapter);
6c80b18d 1594 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1595}
1596
a97342f9
DP		 1597struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1598{
1599 struct netxen_adapter *adapter = netdev_priv(netdev);
1600 struct net_device_stats *stats = &adapter->net_stats;
1601
1602 memset(stats, 0, sizeof(*stats));
1603
a97342f9 1604 stats->rx_packets = adapter->stats.no_rcv;
e98e3350 1605 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 1606 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 1607 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 1608 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 1609 stats->tx_dropped = adapter->stats.txdropped;
1610
1611 return stats;
1612}
1613
e4c93c81 1614static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1615{
d8b100c5
DP		 1616 struct nx_host_sds_ring *sds_ring = data;
1617 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1618 u32 status = 0;
1619
1620 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1621
1622 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1623 return IRQ_NONE;
e01872af 1624
d71e1be8
DP		 1625 if (adapter->ahw.revision_id >= NX_P3_B1) {
1626 /* check interrupt state machine, to be sure */
1627 status = adapter->pci_read_immediate(adapter,
1628 ISR_INT_STATE_REG);
1629 if (!ISR_LEGACY_INT_TRIGGERED(status))
1630 return IRQ_NONE;
1631
092bc571
DP		 1632 } else {
1633 unsigned long our_int = 0;
d71e1be8
DP		 1634
1635 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
092bc571 1636
d71e1be8 1637 /* not our interrupt */
092bc571 1638 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1639 return IRQ_NONE;
1640
092bc571
DP		 1641 /* claim interrupt */
1642 adapter->pci_write_normalize(adapter,
1643 CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1644 }
1645
092bc571
DP		 1646 /* clear interrupt */
1647 if (adapter->fw_major < 4)
d8b100c5 1648 netxen_nic_disable_int(sds_ring);
092bc571
DP		 1649
1650 adapter->pci_write_immediate(adapter,
1651 adapter->legacy_intr.tgt_status_reg,
1652 0xffffffff);
1653 /* read twice to ensure write is flushed */
1654 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1655 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1656
d8b100c5 1657 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1658
1659 return IRQ_HANDLED;
1660}
1661
e4c93c81 1662static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1663{
d8b100c5
DP		 1664 struct nx_host_sds_ring *sds_ring = data;
1665 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1666
092bc571
DP		 1667 /* clear interrupt */
1668 adapter->pci_write_immediate(adapter,
1669 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1670
d8b100c5 1671 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1672 return IRQ_HANDLED;
1673}
1674
b3df68f8
DP		 1675static irqreturn_t netxen_msix_intr(int irq, void *data)
1676{
d8b100c5 1677 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1678
d8b100c5 1679 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1680 return IRQ_HANDLED;
1681}
1682
bea3348e 1683static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1684{
d8b100c5
DP		 1685 struct nx_host_sds_ring *sds_ring =
1686 container_of(napi, struct nx_host_sds_ring, napi);
1687
1688 struct netxen_adapter *adapter = sds_ring->adapter;
1689
05aaa02d 1690 int tx_complete;
bea3348e 1691 int work_done;
3d396eb1 1692
05aaa02d 1693 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1694
d8b100c5 1695 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 1696
05aaa02d 1697 if ((work_done < budget) && tx_complete) {
d8b100c5
DP		 1698 napi_complete(&sds_ring->napi);
1699 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 1700 }
1701
bea3348e 1702 return work_done;
3d396eb1
AK		 1703}
1704
1705#ifdef CONFIG_NET_POLL_CONTROLLER
1706static void netxen_nic_poll_controller(struct net_device *netdev)
1707{
3176ff3e 1708 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1709 disable_irq(adapter->irq);
1494a814 1710 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1711 enable_irq(adapter->irq);
1712}
1713#endif
3d396eb1
AK		 1714
1715static struct pci_driver netxen_driver = {
1716 .name = netxen_nic_driver_name,
1717 .id_table = netxen_pci_tbl,
1718 .probe = netxen_nic_probe,
0b72e659
DP		 1719 .remove = __devexit_p(netxen_nic_remove),
1720 .suspend = netxen_nic_suspend,
1721 .resume = netxen_nic_resume
3d396eb1
AK		 1722};
1723
1724/* Driver Registration on NetXen card */
1725
1726static int __init netxen_init_module(void)
1727{
ff4fbd43
DP		 1728 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1729
79ea13ce 1730 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1731 return -ENOMEM;
1732
184231bd 1733 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1734}
1735
1736module_init(netxen_init_module);
1737
1738static void __exit netxen_exit_module(void)
1739{
3d396eb1 1740 pci_unregister_driver(&netxen_driver);
9de06610 1741 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1742}
1743
1744module_exit(netxen_exit_module);
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