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netxen: add receive side scaling (rss) support
[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>
ed25ffa1 32#include <linux/highmem.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
DP		 109netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
110 uint32_t crb_producer)
3176ff3e 111{
3ce06a32
DP		 112 adapter->pci_write_normalize(adapter,
113 adapter->crb_addr_cmd_producer, crb_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,
123 u32 crb_consumer)
3176ff3e 124{
3ce06a32
DP		 125 adapter->pci_write_normalize(adapter,
126 adapter->crb_addr_cmd_consumer, crb_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
1f434f63 210 mask = DMA_32BIT_MASK;
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 */
1f434f63
DP		 216 cmask = DMA_32BIT_MASK;
217
218#ifndef CONFIG_IA64
219 if (revision_id >= NX_P3_B0)
220 mask = DMA_39BIT_MASK;
221 else if (revision_id == NX_P2_C1)
222 mask = DMA_35BIT_MASK;
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
409 if (netxen_is_flash_supported(adapter) != 0)
410 return -EIO;
411
412 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
413 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
414 return -EIO;
415 } else {
416 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
417 return -EIO;
418 }
419
420 p = (unsigned char *)&mac_addr;
421 for (i = 0; i < 6; i++)
422 netdev->dev_addr[i] = *(p + 5 - i);
423
424 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
425
426 /* set station address */
427
e174961c
JB		 428 if (!is_valid_ether_addr(netdev->perm_addr))
429 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
430 else
9dc28efe
DP		 431 adapter->macaddr_set(adapter, netdev->dev_addr);
432
433 return 0;
434}
435
1abd266f
SH		 436static void netxen_set_multicast_list(struct net_device *dev)
437{
438 struct netxen_adapter *adapter = netdev_priv(dev);
439
440 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
441 netxen_p3_nic_set_multi(dev);
442 else
443 netxen_p2_nic_set_multi(dev);
444}
445
446static const struct net_device_ops netxen_netdev_ops = {
447 .ndo_open = netxen_nic_open,
448 .ndo_stop = netxen_nic_close,
449 .ndo_start_xmit = netxen_nic_xmit_frame,
450 .ndo_get_stats = netxen_nic_get_stats,
451 .ndo_validate_addr = eth_validate_addr,
452 .ndo_set_multicast_list = netxen_set_multicast_list,
453 .ndo_set_mac_address = netxen_nic_set_mac,
454 .ndo_change_mtu = netxen_nic_change_mtu,
455 .ndo_tx_timeout = netxen_tx_timeout,
456#ifdef CONFIG_NET_POLL_CONTROLLER
457 .ndo_poll_controller = netxen_nic_poll_controller,
458#endif
459};
460
97daee83
DP		 461static void
462netxen_setup_intr(struct netxen_adapter *adapter)
463{
464 struct netxen_legacy_intr_set *legacy_intrp;
465 struct pci_dev *pdev = adapter->pdev;
466
467 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
468 adapter->intr_scheme = -1;
469 adapter->msi_mode = -1;
470
471 if (adapter->ahw.revision_id >= NX_P3_B0)
472 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
473 else
474 legacy_intrp = &legacy_intr[0];
475 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
476 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
477 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
478 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
479
480 netxen_set_msix_bit(pdev, 0);
481
482 if (adapter->msix_supported) {
483
484 netxen_init_msix_entries(adapter);
485 if (pci_enable_msix(pdev, adapter->msix_entries,
486 MSIX_ENTRIES_PER_ADAPTER))
487 goto request_msi;
488
489 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
490 netxen_set_msix_bit(pdev, 1);
491 dev_info(&pdev->dev, "using msi-x interrupts\n");
492
493 } else {
494request_msi:
495 if (use_msi && !pci_enable_msi(pdev)) {
496 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
497 dev_info(&pdev->dev, "using msi interrupts\n");
498 } else
499 dev_info(&pdev->dev, "using legacy interrupts\n");
d8b100c5 500 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 501 }
502}
503
504static void
505netxen_teardown_intr(struct netxen_adapter *adapter)
506{
507 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
508 pci_disable_msix(adapter->pdev);
509 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
510 pci_disable_msi(adapter->pdev);
511}
512
513static void
514netxen_cleanup_pci_map(struct netxen_adapter *adapter)
515{
516 if (adapter->ahw.db_base != NULL)
517 iounmap(adapter->ahw.db_base);
518 if (adapter->ahw.pci_base0 != NULL)
519 iounmap(adapter->ahw.pci_base0);
520 if (adapter->ahw.pci_base1 != NULL)
521 iounmap(adapter->ahw.pci_base1);
522 if (adapter->ahw.pci_base2 != NULL)
523 iounmap(adapter->ahw.pci_base2);
524}
525
526static int
527netxen_setup_pci_map(struct netxen_adapter *adapter)
528{
529 void __iomem *mem_ptr0 = NULL;
530 void __iomem *mem_ptr1 = NULL;
531 void __iomem *mem_ptr2 = NULL;
532 void __iomem *db_ptr = NULL;
533
97daee83
DP		 534 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
535
536 struct pci_dev *pdev = adapter->pdev;
537 int pci_func = adapter->ahw.pci_func;
538
539 int err = 0;
540
541 /*
542 * Set the CRB window to invalid. If any register in window 0 is
543 * accessed it should set the window to 0 and then reset it to 1.
544 */
545 adapter->curr_window = 255;
546 adapter->ahw.qdr_sn_window = -1;
547 adapter->ahw.ddr_mn_window = -1;
548
549 /* remap phys address */
550 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
551 mem_len = pci_resource_len(pdev, 0);
552 pci_len0 = 0;
553
554 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
555 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
556 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
557 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
558 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
559 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
560 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
561 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
562 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
563
564 /* 128 Meg of memory */
565 if (mem_len == NETXEN_PCI_128MB_SIZE) {
566 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
567 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
568 SECOND_PAGE_GROUP_SIZE);
569 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
570 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 571 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
572 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
573 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
574 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 575 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
576 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
577 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
578 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
579 adapter->pci_write_immediate =
580 netxen_nic_pci_write_immediate_2M;
581 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
582 adapter->pci_write_normalize =
583 netxen_nic_pci_write_normalize_2M;
584 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
585 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
586 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
587
588 mem_ptr0 = pci_ioremap_bar(pdev, 0);
589 if (mem_ptr0 == NULL) {
590 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
591 return -EIO;
592 }
593 pci_len0 = mem_len;
97daee83
DP		 594
595 adapter->ahw.ddr_mn_window = 0;
596 adapter->ahw.qdr_sn_window = 0;
597
598 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
599 (pci_func * 0x20);
600 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
601 if (pci_func < 4)
602 adapter->ahw.ms_win_crb += (pci_func * 0x20);
603 else
604 adapter->ahw.ms_win_crb +=
605 0xA0 + ((pci_func - 4) * 0x10);
606 } else {
607 return -EIO;
608 }
609
610 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
611
612 adapter->ahw.pci_base0 = mem_ptr0;
613 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 614 adapter->ahw.pci_base1 = mem_ptr1;
615 adapter->ahw.pci_base2 = mem_ptr2;
616
617 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
618 goto skip_doorbell;
619
620 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
621 db_len = pci_resource_len(pdev, 4);
622
623 if (db_len == 0) {
624 printk(KERN_ERR "%s: doorbell is disabled\n",
625 netxen_nic_driver_name);
626 err = -EIO;
627 goto err_out;
628 }
629
630 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
631 if (!db_ptr) {
632 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
633 netxen_nic_driver_name);
634 err = -EIO;
635 goto err_out;
636 }
637
638skip_doorbell:
639 adapter->ahw.db_base = db_ptr;
640 adapter->ahw.db_len = db_len;
641 return 0;
642
643err_out:
644 netxen_cleanup_pci_map(adapter);
645 return err;
646}
647
ba599d4f
DP		 648static int
649netxen_start_firmware(struct netxen_adapter *adapter)
650{
651 int val, err, first_boot;
652 struct pci_dev *pdev = adapter->pdev;
653
0b72e659
DP		 654 int first_driver = 0;
655 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
656 if (adapter->ahw.pci_func == 0)
657 first_driver = 1;
658 } else {
659 if (adapter->portnum == 0)
660 first_driver = 1;
661 }
662
663 if (!first_driver)
664 return 0;
665
ba599d4f
DP		 666 first_boot = adapter->pci_read_normalize(adapter,
667 NETXEN_CAM_RAM(0x1fc));
668
669 err = netxen_check_hw_init(adapter, first_boot);
670 if (err) {
671 dev_err(&pdev->dev, "error in init HW init sequence\n");
672 return err;
673 }
674
ba599d4f
DP		 675 if (first_boot != 0x55555555) {
676 adapter->pci_write_normalize(adapter,
677 CRB_CMDPEG_STATE, 0);
678 netxen_pinit_from_rom(adapter, 0);
679 msleep(1);
680 }
567c6c4e 681
1f434f63 682 netxen_nic_reg_write(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 683 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
684 netxen_set_port_mode(adapter);
685
ba599d4f
DP		 686 netxen_load_firmware(adapter);
687
688 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
689
690 /* Initialize multicast addr pool owners */
691 val = 0x7654;
1e2d0059 692 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f
DP		 693 val |= 0x0f000000;
694 netxen_crb_writelit_adapter(adapter,
695 NETXEN_MAC_ADDR_CNTL_REG, val);
696
697 }
698
699 err = netxen_initialize_adapter_offload(adapter);
700 if (err)
701 return err;
702
703 /*
704 * Tell the hardware our version number.
705 */
706 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
707 | ((_NETXEN_NIC_LINUX_MINOR << 8))
708 | (_NETXEN_NIC_LINUX_SUBVERSION);
709 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, val);
710
711 /* Handshake with the card before we register the devices. */
712 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
713 if (err) {
714 netxen_free_adapter_offload(adapter);
715 return err;
716 }
717
718 return 0;
719}
720
9f5bc7f1
DP		 721static int
722netxen_nic_request_irq(struct netxen_adapter *adapter)
723{
724 irq_handler_t handler;
d8b100c5
DP		 725 struct nx_host_sds_ring *sds_ring;
726 int err, ring;
727
9f5bc7f1
DP		 728 unsigned long flags = IRQF_SAMPLE_RANDOM;
729 struct net_device *netdev = adapter->netdev;
d8b100c5 730 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1
DP		 731
732 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
733 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
734 printk(KERN_ERR "%s: Firmware interrupt scheme is "
735 "incompatible with driver\n",
736 netdev->name);
737 adapter->driver_mismatch = 1;
738 return -EINVAL;
739 }
740
741 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
742 handler = netxen_msix_intr;
743 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
744 handler = netxen_msi_intr;
745 else {
746 flags |= IRQF_SHARED;
747 handler = netxen_intr;
748 }
749 adapter->irq = netdev->irq;
750
d8b100c5
DP		 751 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
752 sds_ring = &recv_ctx->sds_rings[ring];
753 sprintf(sds_ring->name, "%16s[%d]", netdev->name, ring);
754 err = request_irq(sds_ring->irq, handler,
755 flags, sds_ring->name, sds_ring);
756 if (err)
757 return err;
758 }
759
760 return 0;
761}
762
763static void
764netxen_nic_free_irq(struct netxen_adapter *adapter)
765{
766 int ring;
767 struct nx_host_sds_ring *sds_ring;
768
769 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
770
771 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
772 sds_ring = &recv_ctx->sds_rings[ring];
773 free_irq(sds_ring->irq, sds_ring);
774 }
9f5bc7f1
DP		 775}
776
777static int
778netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
779{
780 int err;
781
782 err = adapter->init_port(adapter, adapter->physical_port);
783 if (err) {
784 printk(KERN_ERR "%s: Failed to initialize port %d\n",
785 netxen_nic_driver_name, adapter->portnum);
786 return err;
787 }
788 adapter->macaddr_set(adapter, netdev->dev_addr);
789
790 netxen_nic_set_link_parameters(adapter);
791
792 netxen_set_multicast_list(netdev);
793 if (adapter->set_mtu)
794 adapter->set_mtu(adapter, netdev->mtu);
795
796 adapter->ahw.linkup = 0;
797 mod_timer(&adapter->watchdog_timer, jiffies);
798
d8b100c5
DP		 799 netxen_napi_enable(adapter);
800
801 if (adapter->max_sds_rings > 1)
802 netxen_config_rss(adapter, 1);
9f5bc7f1
DP		 803
804 return 0;
805}
806
807static void
808netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
809{
810 netif_carrier_off(netdev);
811 netif_stop_queue(netdev);
d8b100c5 812 netxen_napi_disable(adapter);
9f5bc7f1
DP		 813
814 if (adapter->stop_port)
815 adapter->stop_port(adapter);
816
9f5bc7f1
DP		 817 netxen_release_tx_buffers(adapter);
818
819 FLUSH_SCHEDULED_WORK();
820 del_timer_sync(&adapter->watchdog_timer);
821}
822
823
824static int
825netxen_nic_attach(struct netxen_adapter *adapter)
826{
827 struct net_device *netdev = adapter->netdev;
828 struct pci_dev *pdev = adapter->pdev;
becf46a0 829 int err, ring;
d8b100c5 830 struct nx_host_rds_ring *rds_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) {
860 adapter->crb_addr_cmd_producer =
861 crb_cmd_producer[adapter->portnum];
862 adapter->crb_addr_cmd_consumer =
863 crb_cmd_consumer[adapter->portnum];
864
865 netxen_nic_update_cmd_producer(adapter, 0);
866 netxen_nic_update_cmd_consumer(adapter, 0);
867 }
868
d8b100c5
DP		 869 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
870 rds_ring = &adapter->recv_ctx.rds_rings[ring];
871 netxen_post_rx_buffers(adapter, ring, rds_ring);
872 }
9f5bc7f1
DP		 873
874 err = netxen_nic_request_irq(adapter);
875 if (err) {
876 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
877 netdev->name);
878 goto err_out_free_rxbuf;
879 }
880
881 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
882 return 0;
883
884err_out_free_rxbuf:
885 netxen_release_rx_buffers(adapter);
886 netxen_free_hw_resources(adapter);
887err_out_free_sw:
888 netxen_free_sw_resources(adapter);
889 return err;
890}
891
892static void
893netxen_nic_detach(struct netxen_adapter *adapter)
894{
d8b100c5 895 netxen_nic_free_irq(adapter);
9f5bc7f1
DP		 896
897 netxen_release_rx_buffers(adapter);
898 netxen_free_hw_resources(adapter);
899 netxen_free_sw_resources(adapter);
900
901 adapter->is_up = 0;
902}
903
3d396eb1
AK		 904static int __devinit
905netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
906{
907 struct net_device *netdev = NULL;
908 struct netxen_adapter *adapter = NULL;
2956640d 909 int i = 0, err;
3176ff3e 910 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 911 uint8_t revision_id;
3d396eb1 912
dcd56fdb 913 if (pci_func_id == 0)
2956640d 914 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
6c80b18d 915
3176ff3e 916 if (pdev->class != 0x020000) {
dcd56fdb 917 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 918 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 919 return -ENODEV;
920 }
2956640d 921
11d89d63
DP		 922 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
923 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
924 "will not be enabled.\n",
925 NX_P3_A0, NX_P3_B1);
926 return -ENODEV;
927 }
928
3d396eb1
AK		 929 if ((err = pci_enable_device(pdev)))
930 return err;
2956640d 931
3d396eb1
AK		 932 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
933 err = -ENODEV;
934 goto err_out_disable_pdev;
935 }
936
937 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
938 goto err_out_disable_pdev;
939
940 pci_set_master(pdev);
3176ff3e
MT		 941
942 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
943 if(!netdev) {
944 printk(KERN_ERR"%s: Failed to allocate memory for the "
945 "device block.Check system memory resource"
946 " usage.\n", netxen_nic_driver_name);
947 goto err_out_free_res;
948 }
949
3176ff3e
MT		 950 SET_NETDEV_DEV(netdev, &pdev->dev);
951
4cf1653a 952 adapter = netdev_priv(netdev);
2956640d
DP		 953 adapter->netdev = netdev;
954 adapter->pdev = pdev;
13ba9c77 955 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 956
957 revision_id = pdev->revision;
958 adapter->ahw.revision_id = revision_id;
959
960 err = nx_set_dma_mask(adapter, revision_id);
961 if (err)
962 goto err_out_free_netdev;
963
3ce06a32 964 rwlock_init(&adapter->adapter_lock);
d8b100c5 965 spin_lock_init(&adapter->tx_clean_lock);
3ce06a32 966
97daee83
DP		 967 err = netxen_setup_pci_map(adapter);
968 if (err)
6c80b18d 969 goto err_out_free_netdev;
3d396eb1 970
2d1a3bbd 971 /* This will be reset for mezz cards */
3176ff3e 972 adapter->portnum = pci_func_id;
200eef20 973 adapter->rx_csum = 1;
623621b0 974 adapter->mc_enabled = 0;
83821a07 975 if (NX_IS_REVISION_P3(revision_id))
2956640d 976 adapter->max_mc_count = 38;
83821a07 977 else
2956640d 978 adapter->max_mc_count = 16;
3176ff3e 979
1abd266f 980 netdev->netdev_ops = &netxen_netdev_ops;
05aaa02d 981 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 982
983 netxen_nic_change_mtu(netdev, netdev->mtu);
984
985 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1abd266f 986
cdff1036
DP		 987 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
988 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
989
cd1f8160 990 if (NX_IS_REVISION_P3(revision_id)) {
cdff1036
DP		 991 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
992 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
cd1f8160 993 }
3176ff3e 994
cdff1036 995 if (adapter->pci_using_dac) {
3176ff3e 996 netdev->features |= NETIF_F_HIGHDMA;
cdff1036
DP		 997 netdev->vlan_features |= NETIF_F_HIGHDMA;
998 }
3176ff3e 999
dcd56fdb
DP		 1000 if (netxen_nic_get_board_info(adapter) != 0) {
1001 printk("%s: Error getting board config info.\n",
2956640d 1002 netxen_nic_driver_name);
dcd56fdb
DP		 1003 err = -EIO;
1004 goto err_out_iounmap;
1005 }
6c80b18d 1006
6c80b18d
MT		 1007 netxen_initialize_adapter_ops(adapter);
1008
13ba9c77 1009 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1010 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1011 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1012 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1013 if (pci_func_id >= 2)
13ba9c77 1014 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1015 break;
1016 default:
1017 break;
1018 }
13ba9c77 1019
0b72e659
DP		 1020 err = netxen_start_firmware(adapter);
1021 if (err)
1022 goto err_out_iounmap;
2956640d 1023
1f434f63
DP		 1024 nx_update_dma_mask(adapter);
1025
1e2d0059 1026 netxen_nic_get_firmware_info(adapter);
d9e651bc 1027
3d396eb1 1028 /*
6c80b18d 1029 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1030 */
dcd56fdb 1031 adapter->physical_port = adapter->portnum;
044fad0d
DP		 1032 if (adapter->fw_major < 4) {
1033 i = adapter->pci_read_normalize(adapter,
1034 CRB_V2P(adapter->portnum));
1035 if (i != 0x55555555)
1036 adapter->physical_port = i;
1037 }
6c80b18d 1038
438627c7 1039 netxen_check_options(adapter);
2956640d 1040
97daee83 1041 netxen_setup_intr(adapter);
2956640d 1042
d8b100c5
DP		 1043 netdev->irq = adapter->msix_entries[0].vector;
1044
1045 netxen_napi_add(adapter, netdev);
2956640d
DP		 1046
1047 err = netxen_receive_peg_ready(adapter);
1048 if (err)
1049 goto err_out_disable_msi;
1050
1051 init_timer(&adapter->watchdog_timer);
2956640d
DP		 1052 adapter->watchdog_timer.function = &netxen_watchdog;
1053 adapter->watchdog_timer.data = (unsigned long)adapter;
1054 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1055 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1056
9dc28efe
DP		 1057 err = netxen_read_mac_addr(adapter);
1058 if (err)
1059 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 1060
3176ff3e
MT		 1061 netif_carrier_off(netdev);
1062 netif_stop_queue(netdev);
1063
6c80b18d
MT		 1064 if ((err = register_netdev(netdev))) {
1065 printk(KERN_ERR "%s: register_netdev failed port #%d"
1066 " aborting\n", netxen_nic_driver_name,
1067 adapter->portnum);
1068 err = -EIO;
2956640d 1069 goto err_out_disable_msi;
6c80b18d
MT		 1070 }
1071
1072 pci_set_drvdata(pdev, adapter);
3d396eb1 1073
1e2d0059 1074 switch (adapter->ahw.port_type) {
2956640d
DP		 1075 case NETXEN_NIC_GBE:
1076 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1077 adapter->netdev->name);
1078 break;
1079 case NETXEN_NIC_XGBE:
1080 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1081 adapter->netdev->name);
1082 break;
3d396eb1 1083 }
3d396eb1 1084
2956640d
DP		 1085 return 0;
1086
1087err_out_disable_msi:
97daee83 1088 netxen_teardown_intr(adapter);
6c80b18d 1089
0b72e659 1090 netxen_free_adapter_offload(adapter);
3d396eb1 1091
2956640d 1092err_out_iounmap:
97daee83 1093 netxen_cleanup_pci_map(adapter);
cb8011ad 1094
6c80b18d
MT		 1095err_out_free_netdev:
1096 free_netdev(netdev);
1097
1098err_out_free_res:
3d396eb1 1099 pci_release_regions(pdev);
6c80b18d
MT		 1100
1101err_out_disable_pdev:
2956640d 1102 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1103 pci_disable_device(pdev);
1104 return err;
1105}
1106
1107static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1108{
1109 struct netxen_adapter *adapter;
3176ff3e 1110 struct net_device *netdev;
3d396eb1 1111
6c80b18d 1112 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1113 if (adapter == NULL)
1114 return;
1115
6c80b18d
MT		 1116 netdev = adapter->netdev;
1117
96acb6eb
DP		 1118 unregister_netdev(netdev);
1119
96acb6eb 1120 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1 1121 netxen_nic_detach(adapter);
06e9d9f9
DP		 1122
1123 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1124 netxen_p3_free_mac_list(adapter);
96acb6eb 1125 }
3d396eb1 1126
439b454e
DP		 1127 if (adapter->portnum == 0)
1128 netxen_free_adapter_offload(adapter);
96acb6eb 1129
97daee83 1130 netxen_teardown_intr(adapter);
3052246c 1131
97daee83 1132 netxen_cleanup_pci_map(adapter);
595e3fb8
MT		 1133
1134 pci_release_regions(pdev);
3052246c 1135 pci_disable_device(pdev);
595e3fb8
MT		 1136 pci_set_drvdata(pdev, NULL);
1137
6c80b18d 1138 free_netdev(netdev);
3d396eb1
AK		 1139}
1140
0b72e659
DP		 1141static int
1142netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1143{
1144
1145 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1146 struct net_device *netdev = adapter->netdev;
1147
1148 netif_device_detach(netdev);
1149
1150 if (netif_running(netdev))
1151 netxen_nic_down(adapter, netdev);
1152
1153 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1154 netxen_nic_detach(adapter);
1155
1156 pci_save_state(pdev);
1157
1158 if (netxen_nic_wol_supported(adapter)) {
1159 pci_enable_wake(pdev, PCI_D3cold, 1);
1160 pci_enable_wake(pdev, PCI_D3hot, 1);
1161 }
1162
1163 pci_disable_device(pdev);
1164 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1165
1166 return 0;
1167}
1168
1169static int
1170netxen_nic_resume(struct pci_dev *pdev)
1171{
1172 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1173 struct net_device *netdev = adapter->netdev;
1174 int err;
1175
1176 pci_set_power_state(pdev, PCI_D0);
1177 pci_restore_state(pdev);
1178
1179 err = pci_enable_device(pdev);
1180 if (err)
1181 return err;
1182
1183 adapter->curr_window = 255;
1184
1185 err = netxen_start_firmware(adapter);
1186 if (err) {
1187 dev_err(&pdev->dev, "failed to start firmware\n");
1188 return err;
1189 }
1190
1191 if (netif_running(netdev)) {
1192 err = netxen_nic_attach(adapter);
1193 if (err)
1194 return err;
1195
1196 err = netxen_nic_up(adapter, netdev);
1197 if (err)
1198 return err;
1199
1200 netif_device_attach(netdev);
1201 }
1202
1203 return 0;
1204}
1205
3d396eb1
AK		 1206static int netxen_nic_open(struct net_device *netdev)
1207{
4cf1653a 1208 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1209 int err = 0;
3d396eb1 1210
dcd56fdb
DP		 1211 if (adapter->driver_mismatch)
1212 return -EIO;
1213
3d396eb1 1214 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1
DP		 1215 err = netxen_nic_attach(adapter);
1216 if (err)
3d396eb1 1217 return err;
ed25ffa1 1218 }
2956640d 1219
9f5bc7f1
DP		 1220 err = netxen_nic_up(adapter, netdev);
1221 if (err)
1222 goto err_out;
05aaa02d 1223
dcd56fdb 1224 netif_start_queue(netdev);
3d396eb1
AK		 1225
1226 return 0;
2956640d 1227
9f5bc7f1
DP		 1228err_out:
1229 netxen_nic_detach(adapter);
2956640d 1230 return err;
3d396eb1
AK		 1231}
1232
1233/*
1234 * netxen_nic_close - Disables a network interface entry point
1235 */
1236static int netxen_nic_close(struct net_device *netdev)
1237{
3176ff3e 1238 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1239
9f5bc7f1 1240 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1241 return 0;
1242}
1243
391587c3 1244static bool netxen_tso_check(struct net_device *netdev,
cd1f8160
DP		 1245 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1246{
391587c3
DP		 1247 bool tso = false;
1248 u8 opcode = TX_ETHER_PKT;
cdff1036
DP		 1249 __be16 protocol = skb->protocol;
1250 u16 flags = 0;
1251
09640e63 1252 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
cdff1036
DP		 1253 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1254 protocol = vh->h_vlan_encapsulated_proto;
1255 flags = FLAGS_VLAN_TAGGED;
1256 }
cd1f8160 1257
391587c3
DP		 1258 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1259 skb_shinfo(skb)->gso_size > 0) {
1260
1261 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1262 desc->total_hdr_length =
1263 skb_transport_offset(skb) + tcp_hdrlen(skb);
1264
09640e63 1265 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3
DP		 1266 TX_TCP_LSO6 : TX_TCP_LSO;
1267 tso = true;
cd1f8160
DP		 1268
1269 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1270 u8 l4proto;
1271
09640e63 1272 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1273 l4proto = ip_hdr(skb)->protocol;
1274
1275 if (l4proto == IPPROTO_TCP)
1276 opcode = TX_TCP_PKT;
1277 else if(l4proto == IPPROTO_UDP)
1278 opcode = TX_UDP_PKT;
09640e63 1279 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1280 l4proto = ipv6_hdr(skb)->nexthdr;
1281
1282 if (l4proto == IPPROTO_TCP)
1283 opcode = TX_TCPV6_PKT;
1284 else if(l4proto == IPPROTO_UDP)
1285 opcode = TX_UDPV6_PKT;
1286 }
cd1f8160
DP		 1287 }
1288 desc->tcp_hdr_offset = skb_transport_offset(skb);
1289 desc->ip_hdr_offset = skb_network_offset(skb);
cdff1036 1290 netxen_set_tx_flags_opcode(desc, flags, opcode);
391587c3 1291 return tso;
cd1f8160
DP		 1292}
1293
6f703406
DP		 1294static void
1295netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1296 struct netxen_cmd_buffer *pbuf, int last)
1297{
1298 int k;
1299 struct netxen_skb_frag *buffrag;
1300
1301 buffrag = &pbuf->frag_array[0];
1302 pci_unmap_single(pdev, buffrag->dma,
1303 buffrag->length, PCI_DMA_TODEVICE);
1304
1305 for (k = 1; k < last; k++) {
1306 buffrag = &pbuf->frag_array[k];
1307 pci_unmap_page(pdev, buffrag->dma,
1308 buffrag->length, PCI_DMA_TODEVICE);
1309 }
1310}
1311
d32cc3d2
DP		 1312static inline void
1313netxen_clear_cmddesc(u64 *desc)
1314{
1315 int i;
1316 for (i = 0; i < 8; i++)
1317 desc[i] = 0ULL;
1318}
1319
1320static int
1321netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1322{
3176ff3e 1323 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1
AK		 1324 struct netxen_hardware_context *hw = &adapter->ahw;
1325 unsigned int first_seg_len = skb->len - skb->data_len;
391587c3 1326 struct netxen_cmd_buffer *pbuf;
3d396eb1 1327 struct netxen_skb_frag *buffrag;
391587c3 1328 struct cmd_desc_type0 *hwdesc;
6f703406
DP		 1329 struct pci_dev *pdev = adapter->pdev;
1330 dma_addr_t temp_dma;
391587c3 1331 int i, k;
3d396eb1 1332
ba53e6b4 1333 u32 producer, consumer;
391587c3 1334 int frag_count, no_of_desc;
438627c7 1335 u32 num_txd = adapter->num_txd;
391587c3 1336 bool is_tso = false;
3d396eb1 1337
3d396eb1
AK		 1338 frag_count = skb_shinfo(skb)->nr_frags + 1;
1339
3d396eb1
AK		 1340 /* There 4 fragments per descriptor */
1341 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1342
ba53e6b4
DP		 1343 producer = adapter->cmd_producer;
1344 smp_mb();
1345 consumer = adapter->last_cmd_consumer;
1346 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1347 netif_stop_queue(netdev);
1348 smp_mb();
1349 return NETDEV_TX_BUSY;
53a01e00 1350 }
3d396eb1 1351
3d396eb1 1352 /* Copy the descriptors into the hardware */
3d396eb1 1353 hwdesc = &hw->cmd_desc_head[producer];
d32cc3d2 1354 netxen_clear_cmddesc((u64 *)hwdesc);
3d396eb1
AK		 1355 /* Take skb->data itself */
1356 pbuf = &adapter->cmd_buf_arr[producer];
391587c3
DP		 1357
1358 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1359
3d396eb1 1360 pbuf->skb = skb;
3d396eb1 1361 pbuf->frag_count = frag_count;
3d396eb1 1362 buffrag = &pbuf->frag_array[0];
6f703406 1363 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
3d396eb1 1364 PCI_DMA_TODEVICE);
6f703406
DP		 1365 if (pci_dma_mapping_error(pdev, temp_dma))
1366 goto drop_packet;
1367
1368 buffrag->dma = temp_dma;
3d396eb1 1369 buffrag->length = first_seg_len;
391587c3
DP		 1370 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1371 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1372
d32cc3d2 1373 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
3d396eb1
AK		 1374 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1375
1376 for (i = 1, k = 1; i < frag_count; i++, k++) {
1377 struct skb_frag_struct *frag;
1378 int len, temp_len;
1379 unsigned long offset;
3d396eb1
AK		 1380
1381 /* move to next desc. if there is a need */
1382 if ((i & 0x3) == 0) {
1383 k = 0;
ba53e6b4 1384 producer = get_next_index(producer, num_txd);
3d396eb1 1385 hwdesc = &hw->cmd_desc_head[producer];
d32cc3d2 1386 netxen_clear_cmddesc((u64 *)hwdesc);
53a01e00 1387 pbuf = &adapter->cmd_buf_arr[producer];
1388 pbuf->skb = NULL;
3d396eb1
AK		 1389 }
1390 frag = &skb_shinfo(skb)->frags[i - 1];
1391 len = frag->size;
1392 offset = frag->page_offset;
1393
1394 temp_len = len;
6f703406 1395 temp_dma = pci_map_page(pdev, frag->page, offset,
3d396eb1 1396 len, PCI_DMA_TODEVICE);
6f703406
DP		 1397 if (pci_dma_mapping_error(pdev, temp_dma)) {
1398 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1399 goto drop_packet;
1400 }
3d396eb1
AK		 1401
1402 buffrag++;
1403 buffrag->dma = temp_dma;
1404 buffrag->length = temp_len;
1405
d32cc3d2 1406 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
3d396eb1
AK		 1407 switch (k) {
1408 case 0:
3d396eb1
AK		 1409 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1410 break;
1411 case 1:
3d396eb1
AK		 1412 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1413 break;
1414 case 2:
3d396eb1
AK		 1415 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1416 break;
1417 case 3:
3d396eb1
AK		 1418 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1419 break;
1420 }
1421 frag++;
1422 }
ba53e6b4 1423 producer = get_next_index(producer, num_txd);
3d396eb1 1424
3d396eb1
AK		 1425 /* For LSO, we need to copy the MAC/IP/TCP headers into
1426 * the descriptor ring
1427 */
391587c3 1428 if (is_tso) {
3d396eb1 1429 int hdr_len, first_hdr_len, more_hdr;
391587c3 1430 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
ed25ffa1
AK		 1431 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1432 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1433 more_hdr = 1;
1434 } else {
1435 first_hdr_len = hdr_len;
1436 more_hdr = 0;
1437 }
1438 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1439 hwdesc = &hw->cmd_desc_head[producer];
53a01e00 1440 pbuf = &adapter->cmd_buf_arr[producer];
1441 pbuf->skb = NULL;
3d396eb1
AK		 1442
1443 /* copy the first 64 bytes */
ed25ffa1 1444 memcpy(((void *)hwdesc) + 2,
3d396eb1 1445 (void *)(skb->data), first_hdr_len);
ba53e6b4 1446 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1447
1448 if (more_hdr) {
1449 hwdesc = &hw->cmd_desc_head[producer];
53a01e00 1450 pbuf = &adapter->cmd_buf_arr[producer];
1451 pbuf->skb = NULL;
3d396eb1
AK		 1452 /* copy the next 64 bytes - should be enough except
1453 * for pathological case
1454 */
d626f62b
ACM		 1455 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1456 hwdesc,
1457 (hdr_len -
1458 first_hdr_len));
ba53e6b4 1459 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1460 }
1461 }
6c80b18d 1462
ba53e6b4 1463 adapter->cmd_producer = producer;
5dc16268 1464 adapter->stats.txbytes += skb->len;
6c80b18d 1465
ba53e6b4 1466 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
3d396eb1 1467
ba53e6b4 1468 adapter->stats.xmitcalled++;
3d396eb1
AK		 1469 netdev->trans_start = jiffies;
1470
3d396eb1 1471 return NETDEV_TX_OK;
6f703406
DP		 1472
1473drop_packet:
1474 adapter->stats.txdropped++;
1475 dev_kfree_skb_any(skb);
1476 return NETDEV_TX_OK;
3d396eb1
AK		 1477}
1478
a97342f9
DP		 1479static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1480{
1481 struct net_device *netdev = adapter->netdev;
1482 uint32_t temp, temp_state, temp_val;
1483 int rv = 0;
1484
1485 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1486
1487 temp_state = nx_get_temp_state(temp);
1488 temp_val = nx_get_temp_val(temp);
1489
1490 if (temp_state == NX_TEMP_PANIC) {
1491 printk(KERN_ALERT
1492 "%s: Device temperature %d degrees C exceeds"
1493 " maximum allowed. Hardware has been shut down.\n",
1494 netxen_nic_driver_name, temp_val);
1495
1496 netif_carrier_off(netdev);
1497 netif_stop_queue(netdev);
1498 rv = 1;
1499 } else if (temp_state == NX_TEMP_WARN) {
1500 if (adapter->temp == NX_TEMP_NORMAL) {
1501 printk(KERN_ALERT
1502 "%s: Device temperature %d degrees C "
1503 "exceeds operating range."
1504 " Immediate action needed.\n",
1505 netxen_nic_driver_name, temp_val);
1506 }
1507 } else {
1508 if (adapter->temp == NX_TEMP_WARN) {
1509 printk(KERN_INFO
1510 "%s: Device temperature is now %d degrees C"
1511 " in normal range.\n", netxen_nic_driver_name,
1512 temp_val);
1513 }
1514 }
1515 adapter->temp = temp_state;
1516 return rv;
1517}
1518
1519static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1520{
1521 struct net_device *netdev = adapter->netdev;
1522 u32 val, port, linkup;
1523
1524 port = adapter->physical_port;
1525
24a7a455
DP		 1526 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1527 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1528 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1529 linkup = (val == XG_LINK_UP_P3);
c9fc891f 1530 } else {
24a7a455 1531 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1e2d0059 1532 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
24a7a455
DP		 1533 linkup = (val >> port) & 1;
1534 else {
c9fc891f
DP		 1535 val = (val >> port*8) & 0xff;
1536 linkup = (val == XG_LINK_UP);
c9fc891f 1537 }
a97342f9
DP		 1538 }
1539
1540 if (adapter->ahw.linkup && !linkup) {
1541 printk(KERN_INFO "%s: %s NIC Link is down\n",
1542 netxen_nic_driver_name, netdev->name);
1543 adapter->ahw.linkup = 0;
1544 if (netif_running(netdev)) {
1545 netif_carrier_off(netdev);
1546 netif_stop_queue(netdev);
1547 }
c7860a2a
DP		 1548
1549 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1550 } else if (!adapter->ahw.linkup && linkup) {
1551 printk(KERN_INFO "%s: %s NIC Link is up\n",
1552 netxen_nic_driver_name, netdev->name);
1553 adapter->ahw.linkup = 1;
1554 if (netif_running(netdev)) {
1555 netif_carrier_on(netdev);
1556 netif_wake_queue(netdev);
1557 }
c7860a2a
DP		 1558
1559 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1560 }
1561}
1562
3d396eb1
AK		 1563static void netxen_watchdog(unsigned long v)
1564{
1565 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1566
1567 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1568}
1569
a97342f9
DP		 1570void netxen_watchdog_task(struct work_struct *work)
1571{
1572 struct netxen_adapter *adapter =
1573 container_of(work, struct netxen_adapter, watchdog_task);
1574
1575 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1576 return;
1577
1578 netxen_nic_handle_phy_intr(adapter);
1579
922c4f2c
DP		 1580 if (netif_running(adapter->netdev))
1581 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1582}
1583
3d396eb1
AK		 1584static void netxen_tx_timeout(struct net_device *netdev)
1585{
3176ff3e
MT		 1586 struct netxen_adapter *adapter = (struct netxen_adapter *)
1587 netdev_priv(netdev);
1588 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1589}
1590
6d5aefb8 1591static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1592{
4790654c 1593 struct netxen_adapter *adapter =
3176ff3e 1594 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1
AK		 1595
1596 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1597 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1598
d8b100c5 1599 netxen_napi_disable(adapter);
ba53e6b4 1600
6c80b18d 1601 adapter->netdev->trans_start = jiffies;
ba53e6b4 1602
d8b100c5 1603 netxen_napi_enable(adapter);
6c80b18d 1604 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1605}
1606
a97342f9
DP		 1607/*
1608 * netxen_nic_get_stats - Get System Network Statistics
1609 * @netdev: network interface device structure
1610 */
1611struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1612{
1613 struct netxen_adapter *adapter = netdev_priv(netdev);
1614 struct net_device_stats *stats = &adapter->net_stats;
1615
1616 memset(stats, 0, sizeof(*stats));
1617
1618 /* total packets received */
1619 stats->rx_packets = adapter->stats.no_rcv;
1620 /* total packets transmitted */
1621 stats->tx_packets = adapter->stats.xmitedframes +
1622 adapter->stats.xmitfinished;
1623 /* total bytes received */
1624 stats->rx_bytes = adapter->stats.rxbytes;
1625 /* total bytes transmitted */
1626 stats->tx_bytes = adapter->stats.txbytes;
1627 /* bad packets received */
1628 stats->rx_errors = adapter->stats.rcvdbadskb;
1629 /* packet transmit problems */
1630 stats->tx_errors = adapter->stats.nocmddescriptor;
1631 /* no space in linux buffers */
1632 stats->rx_dropped = adapter->stats.rxdropped;
1633 /* no space available in linux */
1634 stats->tx_dropped = adapter->stats.txdropped;
1635
1636 return stats;
1637}
1638
e4c93c81 1639static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1640{
d8b100c5
DP		 1641 struct nx_host_sds_ring *sds_ring = data;
1642 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 1643 u32 status = 0;
1644
1645 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1646
1647 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1648 return IRQ_NONE;
e01872af 1649
d71e1be8
DP		 1650 if (adapter->ahw.revision_id >= NX_P3_B1) {
1651 /* check interrupt state machine, to be sure */
1652 status = adapter->pci_read_immediate(adapter,
1653 ISR_INT_STATE_REG);
1654 if (!ISR_LEGACY_INT_TRIGGERED(status))
1655 return IRQ_NONE;
1656
092bc571
DP		 1657 } else {
1658 unsigned long our_int = 0;
d71e1be8
DP		 1659
1660 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
092bc571 1661
d71e1be8 1662 /* not our interrupt */
092bc571 1663 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1664 return IRQ_NONE;
1665
092bc571
DP		 1666 /* claim interrupt */
1667 adapter->pci_write_normalize(adapter,
1668 CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1669 }
1670
092bc571
DP		 1671 /* clear interrupt */
1672 if (adapter->fw_major < 4)
d8b100c5 1673 netxen_nic_disable_int(sds_ring);
092bc571
DP		 1674
1675 adapter->pci_write_immediate(adapter,
1676 adapter->legacy_intr.tgt_status_reg,
1677 0xffffffff);
1678 /* read twice to ensure write is flushed */
1679 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1680 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1681
d8b100c5 1682 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 1683
1684 return IRQ_HANDLED;
1685}
1686
e4c93c81 1687static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 1688{
d8b100c5
DP		 1689 struct nx_host_sds_ring *sds_ring = data;
1690 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 1691
092bc571
DP		 1692 /* clear interrupt */
1693 adapter->pci_write_immediate(adapter,
1694 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1695
d8b100c5 1696 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 1697 return IRQ_HANDLED;
1698}
1699
b3df68f8
DP		 1700static irqreturn_t netxen_msix_intr(int irq, void *data)
1701{
d8b100c5 1702 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 1703
d8b100c5 1704 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 1705 return IRQ_HANDLED;
1706}
1707
bea3348e 1708static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1709{
d8b100c5
DP		 1710 struct nx_host_sds_ring *sds_ring =
1711 container_of(napi, struct nx_host_sds_ring, napi);
1712
1713 struct netxen_adapter *adapter = sds_ring->adapter;
1714
05aaa02d 1715 int tx_complete;
bea3348e 1716 int work_done;
3d396eb1 1717
05aaa02d 1718 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1719
d8b100c5 1720 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 1721
05aaa02d 1722 if ((work_done < budget) && tx_complete) {
d8b100c5
DP		 1723 napi_complete(&sds_ring->napi);
1724 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 1725 }
1726
bea3348e 1727 return work_done;
3d396eb1
AK		 1728}
1729
1730#ifdef CONFIG_NET_POLL_CONTROLLER
1731static void netxen_nic_poll_controller(struct net_device *netdev)
1732{
3176ff3e 1733 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1734 disable_irq(adapter->irq);
1494a814 1735 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1736 enable_irq(adapter->irq);
1737}
1738#endif
3d396eb1
AK		 1739
1740static struct pci_driver netxen_driver = {
1741 .name = netxen_nic_driver_name,
1742 .id_table = netxen_pci_tbl,
1743 .probe = netxen_nic_probe,
0b72e659
DP		 1744 .remove = __devexit_p(netxen_nic_remove),
1745 .suspend = netxen_nic_suspend,
1746 .resume = netxen_nic_resume
3d396eb1
AK		 1747};
1748
1749/* Driver Registration on NetXen card */
1750
1751static int __init netxen_init_module(void)
1752{
79ea13ce 1753 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1754 return -ENOMEM;
1755
184231bd 1756 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1757}
1758
1759module_init(netxen_init_module);
1760
1761static void __exit netxen_exit_module(void)
1762{
3d396eb1 1763 pci_unregister_driver(&netxen_driver);
9de06610 1764 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1765}
1766
1767module_exit(netxen_exit_module);
Linux 6.x block layer and io_uring tree(s)