projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
netxen: remove old lro code
[deliverable/linux.git] / drivers / net / netxen / netxen_nic_main.c
CommitLineData
3d396eb1 1/*
5d242f1c 2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3d396eb1 3 * All rights reserved.
80922fbc 4 *
3d396eb1
AK		 5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
80922fbc 9 *
3d396eb1
AK		 10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
80922fbc 14 *
3d396eb1
AK		 15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
80922fbc 19 *
3d396eb1
AK		 20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
80922fbc 22 *
3d396eb1
AK		 23 * Contact Information:
24 * info@netxen.com
5d242f1c
DP		 25 * NetXen Inc,
26 * 18922 Forge Drive
27 * Cupertino, CA 95014-0701
3d396eb1
AK		 28 *
29 */
30
cb8011ad 31#include <linux/vmalloc.h>
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
092bc571 138static inline void netxen_nic_disable_int(struct netxen_adapter *adapter)
4638aef1 139{
092bc571 140 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0);
4638aef1
SH		 141}
142
092bc571 143static inline void netxen_nic_enable_int(struct netxen_adapter *adapter)
4638aef1 144{
48bfd1e0 145 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1);
4638aef1 146
092bc571
DP		 147 if (!NETXEN_IS_MSI_FAMILY(adapter))
148 adapter->pci_write_immediate(adapter,
149 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
4638aef1
SH		 150}
151
2956640d
DP		 152static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
153{
154 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 155 uint64_t mask, cmask;
156
157 adapter->pci_using_dac = 0;
2956640d 158
1f434f63 159 mask = DMA_32BIT_MASK;
2956640d
DP		 160 /*
161 * Consistent DMA mask is set to 32 bit because it cannot be set to
162 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
163 * come off this pool.
164 */
1f434f63
DP		 165 cmask = DMA_32BIT_MASK;
166
167#ifndef CONFIG_IA64
168 if (revision_id >= NX_P3_B0)
169 mask = DMA_39BIT_MASK;
170 else if (revision_id == NX_P2_C1)
171 mask = DMA_35BIT_MASK;
172#endif
2956640d 173 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 174 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 175 adapter->pci_using_dac = 1;
176 return 0;
177 }
2956640d 178
1f434f63
DP		 179 return -EIO;
180}
181
182/* Update addressable range if firmware supports it */
183static int
184nx_update_dma_mask(struct netxen_adapter *adapter)
185{
186 int change, shift, err;
187 uint64_t mask, old_mask;
188 struct pci_dev *pdev = adapter->pdev;
189
190 change = 0;
191
192 shift = netxen_nic_reg_read(adapter, CRB_DMA_SHIFT);
193 if (shift >= 32)
194 return 0;
195
196 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
197 change = 1;
198 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
199 change = 1;
200
201 if (change) {
202 old_mask = pdev->dma_mask;
203 mask = (1ULL<<(32+shift)) - 1;
204
205 err = pci_set_dma_mask(pdev, mask);
206 if (err)
207 return pci_set_dma_mask(pdev, old_mask);
2956640d
DP		 208 }
209
2956640d
DP		 210 return 0;
211}
212
213static void netxen_check_options(struct netxen_adapter *adapter)
214{
438627c7
DP		 215 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
216 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
217 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
218 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
2956640d 219
438627c7 220 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
c7860a2a 221 adapter->msix_supported = !!use_msi_x;
438627c7 222 else
2956640d 223 adapter->msix_supported = 0;
2956640d 224
438627c7
DP		 225 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
226 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
227 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
2956640d
DP		 228
229 adapter->max_possible_rss_rings = 1;
230 return;
231}
232
233static int
234netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
235{
27c915a4 236 u32 val, timeout;
2956640d
DP		 237
238 if (first_boot == 0x55555555) {
239 /* This is the first boot after power up */
27c915a4
DP		 240 adapter->pci_write_normalize(adapter,
241 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
242
243 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
244 return 0;
2956640d
DP		 245
246 /* PCI bus master workaround */
247 adapter->hw_read_wx(adapter,
248 NETXEN_PCIE_REG(0x4), &first_boot, 4);
249 if (!(first_boot & 0x4)) {
250 first_boot |= 0x4;
251 adapter->hw_write_wx(adapter,
252 NETXEN_PCIE_REG(0x4), &first_boot, 4);
253 adapter->hw_read_wx(adapter,
254 NETXEN_PCIE_REG(0x4), &first_boot, 4);
255 }
256
257 /* This is the first boot after power up */
258 adapter->hw_read_wx(adapter,
259 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
260 if (first_boot != 0x80000f) {
261 /* clear the register for future unloads/loads */
262 adapter->pci_write_normalize(adapter,
263 NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 264 return -EIO;
2956640d
DP		 265 }
266
27c915a4
DP		 267 /* Start P2 boot loader */
268 val = adapter->pci_read_normalize(adapter,
269 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
270 adapter->pci_write_normalize(adapter,
271 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
272 timeout = 0;
273 do {
274 msleep(1);
275 val = adapter->pci_read_normalize(adapter,
276 NETXEN_CAM_RAM(0x1fc));
277
278 if (++timeout > 5000)
279 return -EIO;
280
281 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 282 }
27c915a4 283 return 0;
2956640d
DP		 284}
285
286static void netxen_set_port_mode(struct netxen_adapter *adapter)
287{
288 u32 val, data;
289
1e2d0059 290 val = adapter->ahw.board_type;
2956640d
DP		 291 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
292 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
293 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
294 data = NETXEN_PORT_MODE_802_3_AP;
295 adapter->hw_write_wx(adapter,
296 NETXEN_PORT_MODE_ADDR, &data, 4);
297 } else if (port_mode == NETXEN_PORT_MODE_XG) {
298 data = NETXEN_PORT_MODE_XG;
299 adapter->hw_write_wx(adapter,
300 NETXEN_PORT_MODE_ADDR, &data, 4);
301 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
302 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
303 adapter->hw_write_wx(adapter,
304 NETXEN_PORT_MODE_ADDR, &data, 4);
305 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
306 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
307 adapter->hw_write_wx(adapter,
308 NETXEN_PORT_MODE_ADDR, &data, 4);
309 } else {
310 data = NETXEN_PORT_MODE_AUTO_NEG;
311 adapter->hw_write_wx(adapter,
312 NETXEN_PORT_MODE_ADDR, &data, 4);
313 }
314
315 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
316 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
317 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
318 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
319 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
320 }
321 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
322 &wol_port_mode, 4);
323 }
324}
325
2956640d
DP		 326static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
327{
328 u32 control;
329 int pos;
330
331 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
332 if (pos) {
333 pci_read_config_dword(pdev, pos, &control);
334 if (enable)
335 control |= PCI_MSIX_FLAGS_ENABLE;
336 else
337 control = 0;
338 pci_write_config_dword(pdev, pos, control);
339 }
340}
341
342static void netxen_init_msix_entries(struct netxen_adapter *adapter)
343{
344 int i;
345
346 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
347 adapter->msix_entries[i].entry = i;
348}
349
9dc28efe
DP		 350static int
351netxen_read_mac_addr(struct netxen_adapter *adapter)
352{
353 int i;
354 unsigned char *p;
355 __le64 mac_addr;
9dc28efe
DP		 356 struct net_device *netdev = adapter->netdev;
357 struct pci_dev *pdev = adapter->pdev;
358
359 if (netxen_is_flash_supported(adapter) != 0)
360 return -EIO;
361
362 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
363 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
364 return -EIO;
365 } else {
366 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
367 return -EIO;
368 }
369
370 p = (unsigned char *)&mac_addr;
371 for (i = 0; i < 6; i++)
372 netdev->dev_addr[i] = *(p + 5 - i);
373
374 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
375
376 /* set station address */
377
e174961c
JB		 378 if (!is_valid_ether_addr(netdev->perm_addr))
379 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
380 else
9dc28efe
DP		 381 adapter->macaddr_set(adapter, netdev->dev_addr);
382
383 return 0;
384}
385
1abd266f
SH		 386static void netxen_set_multicast_list(struct net_device *dev)
387{
388 struct netxen_adapter *adapter = netdev_priv(dev);
389
390 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
391 netxen_p3_nic_set_multi(dev);
392 else
393 netxen_p2_nic_set_multi(dev);
394}
395
396static const struct net_device_ops netxen_netdev_ops = {
397 .ndo_open = netxen_nic_open,
398 .ndo_stop = netxen_nic_close,
399 .ndo_start_xmit = netxen_nic_xmit_frame,
400 .ndo_get_stats = netxen_nic_get_stats,
401 .ndo_validate_addr = eth_validate_addr,
402 .ndo_set_multicast_list = netxen_set_multicast_list,
403 .ndo_set_mac_address = netxen_nic_set_mac,
404 .ndo_change_mtu = netxen_nic_change_mtu,
405 .ndo_tx_timeout = netxen_tx_timeout,
406#ifdef CONFIG_NET_POLL_CONTROLLER
407 .ndo_poll_controller = netxen_nic_poll_controller,
408#endif
409};
410
97daee83
DP		 411static void
412netxen_setup_intr(struct netxen_adapter *adapter)
413{
414 struct netxen_legacy_intr_set *legacy_intrp;
415 struct pci_dev *pdev = adapter->pdev;
416
417 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
418 adapter->intr_scheme = -1;
419 adapter->msi_mode = -1;
420
421 if (adapter->ahw.revision_id >= NX_P3_B0)
422 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
423 else
424 legacy_intrp = &legacy_intr[0];
425 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
426 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
427 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
428 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
429
430 netxen_set_msix_bit(pdev, 0);
431
432 if (adapter->msix_supported) {
433
434 netxen_init_msix_entries(adapter);
435 if (pci_enable_msix(pdev, adapter->msix_entries,
436 MSIX_ENTRIES_PER_ADAPTER))
437 goto request_msi;
438
439 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
440 netxen_set_msix_bit(pdev, 1);
441 dev_info(&pdev->dev, "using msi-x interrupts\n");
442
443 } else {
444request_msi:
445 if (use_msi && !pci_enable_msi(pdev)) {
446 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
447 dev_info(&pdev->dev, "using msi interrupts\n");
448 } else
449 dev_info(&pdev->dev, "using legacy interrupts\n");
450 }
451}
452
453static void
454netxen_teardown_intr(struct netxen_adapter *adapter)
455{
456 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
457 pci_disable_msix(adapter->pdev);
458 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
459 pci_disable_msi(adapter->pdev);
460}
461
462static void
463netxen_cleanup_pci_map(struct netxen_adapter *adapter)
464{
465 if (adapter->ahw.db_base != NULL)
466 iounmap(adapter->ahw.db_base);
467 if (adapter->ahw.pci_base0 != NULL)
468 iounmap(adapter->ahw.pci_base0);
469 if (adapter->ahw.pci_base1 != NULL)
470 iounmap(adapter->ahw.pci_base1);
471 if (adapter->ahw.pci_base2 != NULL)
472 iounmap(adapter->ahw.pci_base2);
473}
474
475static int
476netxen_setup_pci_map(struct netxen_adapter *adapter)
477{
478 void __iomem *mem_ptr0 = NULL;
479 void __iomem *mem_ptr1 = NULL;
480 void __iomem *mem_ptr2 = NULL;
481 void __iomem *db_ptr = NULL;
482
97daee83
DP		 483 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
484
485 struct pci_dev *pdev = adapter->pdev;
486 int pci_func = adapter->ahw.pci_func;
487
488 int err = 0;
489
490 /*
491 * Set the CRB window to invalid. If any register in window 0 is
492 * accessed it should set the window to 0 and then reset it to 1.
493 */
494 adapter->curr_window = 255;
495 adapter->ahw.qdr_sn_window = -1;
496 adapter->ahw.ddr_mn_window = -1;
497
498 /* remap phys address */
499 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
500 mem_len = pci_resource_len(pdev, 0);
501 pci_len0 = 0;
502
503 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
504 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
505 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
506 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
507 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
508 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
509 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
510 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
511 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
512
513 /* 128 Meg of memory */
514 if (mem_len == NETXEN_PCI_128MB_SIZE) {
515 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
516 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
517 SECOND_PAGE_GROUP_SIZE);
518 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
519 THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 520 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
521 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
522 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
523 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
97daee83
DP		 524 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
525 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
526 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
527 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
528 adapter->pci_write_immediate =
529 netxen_nic_pci_write_immediate_2M;
530 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
531 adapter->pci_write_normalize =
532 netxen_nic_pci_write_normalize_2M;
533 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
534 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
535 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
536
537 mem_ptr0 = pci_ioremap_bar(pdev, 0);
538 if (mem_ptr0 == NULL) {
539 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
540 return -EIO;
541 }
542 pci_len0 = mem_len;
97daee83
DP		 543
544 adapter->ahw.ddr_mn_window = 0;
545 adapter->ahw.qdr_sn_window = 0;
546
547 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
548 (pci_func * 0x20);
549 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
550 if (pci_func < 4)
551 adapter->ahw.ms_win_crb += (pci_func * 0x20);
552 else
553 adapter->ahw.ms_win_crb +=
554 0xA0 + ((pci_func - 4) * 0x10);
555 } else {
556 return -EIO;
557 }
558
559 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
560
561 adapter->ahw.pci_base0 = mem_ptr0;
562 adapter->ahw.pci_len0 = pci_len0;
97daee83
DP		 563 adapter->ahw.pci_base1 = mem_ptr1;
564 adapter->ahw.pci_base2 = mem_ptr2;
565
566 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
567 goto skip_doorbell;
568
569 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
570 db_len = pci_resource_len(pdev, 4);
571
572 if (db_len == 0) {
573 printk(KERN_ERR "%s: doorbell is disabled\n",
574 netxen_nic_driver_name);
575 err = -EIO;
576 goto err_out;
577 }
578
579 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
580 if (!db_ptr) {
581 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
582 netxen_nic_driver_name);
583 err = -EIO;
584 goto err_out;
585 }
586
587skip_doorbell:
588 adapter->ahw.db_base = db_ptr;
589 adapter->ahw.db_len = db_len;
590 return 0;
591
592err_out:
593 netxen_cleanup_pci_map(adapter);
594 return err;
595}
596
ba599d4f
DP		 597static int
598netxen_start_firmware(struct netxen_adapter *adapter)
599{
600 int val, err, first_boot;
601 struct pci_dev *pdev = adapter->pdev;
602
0b72e659
DP		 603 int first_driver = 0;
604 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
605 if (adapter->ahw.pci_func == 0)
606 first_driver = 1;
607 } else {
608 if (adapter->portnum == 0)
609 first_driver = 1;
610 }
611
612 if (!first_driver)
613 return 0;
614
ba599d4f
DP		 615 first_boot = adapter->pci_read_normalize(adapter,
616 NETXEN_CAM_RAM(0x1fc));
617
618 err = netxen_check_hw_init(adapter, first_boot);
619 if (err) {
620 dev_err(&pdev->dev, "error in init HW init sequence\n");
621 return err;
622 }
623
ba599d4f
DP		 624 if (first_boot != 0x55555555) {
625 adapter->pci_write_normalize(adapter,
626 CRB_CMDPEG_STATE, 0);
627 netxen_pinit_from_rom(adapter, 0);
628 msleep(1);
629 }
567c6c4e 630
1f434f63 631 netxen_nic_reg_write(adapter, CRB_DMA_SHIFT, 0x55555555);
567c6c4e
DP		 632 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
633 netxen_set_port_mode(adapter);
634
ba599d4f
DP		 635 netxen_load_firmware(adapter);
636
637 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
638
639 /* Initialize multicast addr pool owners */
640 val = 0x7654;
1e2d0059 641 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f
DP		 642 val |= 0x0f000000;
643 netxen_crb_writelit_adapter(adapter,
644 NETXEN_MAC_ADDR_CNTL_REG, val);
645
646 }
647
648 err = netxen_initialize_adapter_offload(adapter);
649 if (err)
650 return err;
651
652 /*
653 * Tell the hardware our version number.
654 */
655 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
656 | ((_NETXEN_NIC_LINUX_MINOR << 8))
657 | (_NETXEN_NIC_LINUX_SUBVERSION);
658 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, val);
659
660 /* Handshake with the card before we register the devices. */
661 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
662 if (err) {
663 netxen_free_adapter_offload(adapter);
664 return err;
665 }
666
667 return 0;
668}
669
9f5bc7f1
DP		 670static int
671netxen_nic_request_irq(struct netxen_adapter *adapter)
672{
673 irq_handler_t handler;
674 unsigned long flags = IRQF_SAMPLE_RANDOM;
675 struct net_device *netdev = adapter->netdev;
676
677 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
678 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
679 printk(KERN_ERR "%s: Firmware interrupt scheme is "
680 "incompatible with driver\n",
681 netdev->name);
682 adapter->driver_mismatch = 1;
683 return -EINVAL;
684 }
685
686 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
687 handler = netxen_msix_intr;
688 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
689 handler = netxen_msi_intr;
690 else {
691 flags |= IRQF_SHARED;
692 handler = netxen_intr;
693 }
694 adapter->irq = netdev->irq;
695
696 return request_irq(adapter->irq, handler,
697 flags, netdev->name, adapter);
698}
699
700static int
701netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
702{
703 int err;
704
705 err = adapter->init_port(adapter, adapter->physical_port);
706 if (err) {
707 printk(KERN_ERR "%s: Failed to initialize port %d\n",
708 netxen_nic_driver_name, adapter->portnum);
709 return err;
710 }
711 adapter->macaddr_set(adapter, netdev->dev_addr);
712
713 netxen_nic_set_link_parameters(adapter);
714
715 netxen_set_multicast_list(netdev);
716 if (adapter->set_mtu)
717 adapter->set_mtu(adapter, netdev->mtu);
718
719 adapter->ahw.linkup = 0;
720 mod_timer(&adapter->watchdog_timer, jiffies);
721
722 napi_enable(&adapter->napi);
723 netxen_nic_enable_int(adapter);
724
725 return 0;
726}
727
728static void
729netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
730{
731 netif_carrier_off(netdev);
732 netif_stop_queue(netdev);
733 napi_disable(&adapter->napi);
734
735 if (adapter->stop_port)
736 adapter->stop_port(adapter);
737
738 netxen_nic_disable_int(adapter);
739
740 netxen_release_tx_buffers(adapter);
741
742 FLUSH_SCHEDULED_WORK();
743 del_timer_sync(&adapter->watchdog_timer);
744}
745
746
747static int
748netxen_nic_attach(struct netxen_adapter *adapter)
749{
750 struct net_device *netdev = adapter->netdev;
751 struct pci_dev *pdev = adapter->pdev;
becf46a0 752 int err, ring;
9f5bc7f1
DP		 753
754 err = netxen_init_firmware(adapter);
755 if (err != 0) {
756 printk(KERN_ERR "Failed to init firmware\n");
757 return -EIO;
758 }
759
760 if (adapter->fw_major < 4)
761 adapter->max_rds_rings = 3;
762 else
763 adapter->max_rds_rings = 2;
764
765 err = netxen_alloc_sw_resources(adapter);
766 if (err) {
767 printk(KERN_ERR "%s: Error in setting sw resources\n",
768 netdev->name);
769 return err;
770 }
771
772 netxen_nic_clear_stats(adapter);
773
774 err = netxen_alloc_hw_resources(adapter);
775 if (err) {
776 printk(KERN_ERR "%s: Error in setting hw resources\n",
777 netdev->name);
778 goto err_out_free_sw;
779 }
780
781 if (adapter->fw_major < 4) {
782 adapter->crb_addr_cmd_producer =
783 crb_cmd_producer[adapter->portnum];
784 adapter->crb_addr_cmd_consumer =
785 crb_cmd_consumer[adapter->portnum];
786
787 netxen_nic_update_cmd_producer(adapter, 0);
788 netxen_nic_update_cmd_consumer(adapter, 0);
789 }
790
becf46a0
DP		 791 for (ring = 0; ring < adapter->max_rds_rings; ring++)
792 netxen_post_rx_buffers(adapter, ring);
9f5bc7f1
DP		 793
794 err = netxen_nic_request_irq(adapter);
795 if (err) {
796 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
797 netdev->name);
798 goto err_out_free_rxbuf;
799 }
800
801 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
802 return 0;
803
804err_out_free_rxbuf:
805 netxen_release_rx_buffers(adapter);
806 netxen_free_hw_resources(adapter);
807err_out_free_sw:
808 netxen_free_sw_resources(adapter);
809 return err;
810}
811
812static void
813netxen_nic_detach(struct netxen_adapter *adapter)
814{
815 if (adapter->irq)
816 free_irq(adapter->irq, adapter);
817
818 netxen_release_rx_buffers(adapter);
819 netxen_free_hw_resources(adapter);
820 netxen_free_sw_resources(adapter);
821
822 adapter->is_up = 0;
823}
824
3d396eb1
AK		 825static int __devinit
826netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
827{
828 struct net_device *netdev = NULL;
829 struct netxen_adapter *adapter = NULL;
2956640d 830 int i = 0, err;
3176ff3e 831 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 832 uint8_t revision_id;
3d396eb1 833
dcd56fdb 834 if (pci_func_id == 0)
2956640d 835 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
6c80b18d 836
3176ff3e 837 if (pdev->class != 0x020000) {
dcd56fdb 838 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 839 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 840 return -ENODEV;
841 }
2956640d 842
11d89d63
DP		 843 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
844 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
845 "will not be enabled.\n",
846 NX_P3_A0, NX_P3_B1);
847 return -ENODEV;
848 }
849
3d396eb1
AK		 850 if ((err = pci_enable_device(pdev)))
851 return err;
2956640d 852
3d396eb1
AK		 853 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
854 err = -ENODEV;
855 goto err_out_disable_pdev;
856 }
857
858 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
859 goto err_out_disable_pdev;
860
861 pci_set_master(pdev);
3176ff3e
MT		 862
863 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
864 if(!netdev) {
865 printk(KERN_ERR"%s: Failed to allocate memory for the "
866 "device block.Check system memory resource"
867 " usage.\n", netxen_nic_driver_name);
868 goto err_out_free_res;
869 }
870
3176ff3e
MT		 871 SET_NETDEV_DEV(netdev, &pdev->dev);
872
4cf1653a 873 adapter = netdev_priv(netdev);
2956640d
DP		 874 adapter->netdev = netdev;
875 adapter->pdev = pdev;
13ba9c77 876 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 877
878 revision_id = pdev->revision;
879 adapter->ahw.revision_id = revision_id;
880
881 err = nx_set_dma_mask(adapter, revision_id);
882 if (err)
883 goto err_out_free_netdev;
884
3ce06a32 885 rwlock_init(&adapter->adapter_lock);
3ce06a32 886
97daee83
DP		 887 err = netxen_setup_pci_map(adapter);
888 if (err)
6c80b18d 889 goto err_out_free_netdev;
3d396eb1 890
bea3348e 891 netif_napi_add(netdev, &adapter->napi,
2956640d
DP		 892 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
893
2d1a3bbd 894 /* This will be reset for mezz cards */
3176ff3e 895 adapter->portnum = pci_func_id;
200eef20 896 adapter->rx_csum = 1;
623621b0 897 adapter->mc_enabled = 0;
83821a07 898 if (NX_IS_REVISION_P3(revision_id))
2956640d 899 adapter->max_mc_count = 38;
83821a07 900 else
2956640d 901 adapter->max_mc_count = 16;
3176ff3e 902
1abd266f 903 netdev->netdev_ops = &netxen_netdev_ops;
05aaa02d 904 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 905
906 netxen_nic_change_mtu(netdev, netdev->mtu);
907
908 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1abd266f 909
cdff1036
DP		 910 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
911 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
912
cd1f8160 913 if (NX_IS_REVISION_P3(revision_id)) {
cdff1036
DP		 914 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
915 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
cd1f8160 916 }
3176ff3e 917
cdff1036 918 if (adapter->pci_using_dac) {
3176ff3e 919 netdev->features |= NETIF_F_HIGHDMA;
cdff1036
DP		 920 netdev->vlan_features |= NETIF_F_HIGHDMA;
921 }
3176ff3e 922
dcd56fdb
DP		 923 if (netxen_nic_get_board_info(adapter) != 0) {
924 printk("%s: Error getting board config info.\n",
2956640d 925 netxen_nic_driver_name);
dcd56fdb
DP		 926 err = -EIO;
927 goto err_out_iounmap;
928 }
6c80b18d 929
6c80b18d
MT		 930 netxen_initialize_adapter_ops(adapter);
931
13ba9c77 932 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 933 switch (adapter->ahw.board_type) {
dc515f2e
DP		 934 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
935 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
936 if (pci_func_id >= 2)
13ba9c77 937 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 938 break;
939 default:
940 break;
941 }
13ba9c77 942
0b72e659
DP		 943 err = netxen_start_firmware(adapter);
944 if (err)
945 goto err_out_iounmap;
2956640d 946
1f434f63
DP		 947 nx_update_dma_mask(adapter);
948
1e2d0059 949 netxen_nic_get_firmware_info(adapter);
d9e651bc 950
3d396eb1 951 /*
6c80b18d 952 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 953 */
dcd56fdb 954 adapter->physical_port = adapter->portnum;
044fad0d
DP		 955 if (adapter->fw_major < 4) {
956 i = adapter->pci_read_normalize(adapter,
957 CRB_V2P(adapter->portnum));
958 if (i != 0x55555555)
959 adapter->physical_port = i;
960 }
6c80b18d 961
438627c7 962 netxen_check_options(adapter);
2956640d 963
97daee83 964 netxen_setup_intr(adapter);
2956640d
DP		 965
966 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
967 netdev->irq = adapter->msix_entries[0].vector;
968 else
969 netdev->irq = pdev->irq;
970
971 err = netxen_receive_peg_ready(adapter);
972 if (err)
973 goto err_out_disable_msi;
974
975 init_timer(&adapter->watchdog_timer);
2956640d
DP		 976 adapter->watchdog_timer.function = &netxen_watchdog;
977 adapter->watchdog_timer.data = (unsigned long)adapter;
978 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
979 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
980
9dc28efe
DP		 981 err = netxen_read_mac_addr(adapter);
982 if (err)
983 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 984
3176ff3e
MT		 985 netif_carrier_off(netdev);
986 netif_stop_queue(netdev);
987
6c80b18d
MT		 988 if ((err = register_netdev(netdev))) {
989 printk(KERN_ERR "%s: register_netdev failed port #%d"
990 " aborting\n", netxen_nic_driver_name,
991 adapter->portnum);
992 err = -EIO;
2956640d 993 goto err_out_disable_msi;
6c80b18d
MT		 994 }
995
996 pci_set_drvdata(pdev, adapter);
3d396eb1 997
1e2d0059 998 switch (adapter->ahw.port_type) {
2956640d
DP		 999 case NETXEN_NIC_GBE:
1000 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1001 adapter->netdev->name);
1002 break;
1003 case NETXEN_NIC_XGBE:
1004 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1005 adapter->netdev->name);
1006 break;
3d396eb1 1007 }
3d396eb1 1008
2956640d
DP		 1009 return 0;
1010
1011err_out_disable_msi:
97daee83 1012 netxen_teardown_intr(adapter);
6c80b18d 1013
0b72e659 1014 netxen_free_adapter_offload(adapter);
3d396eb1 1015
2956640d 1016err_out_iounmap:
97daee83 1017 netxen_cleanup_pci_map(adapter);
cb8011ad 1018
6c80b18d
MT		 1019err_out_free_netdev:
1020 free_netdev(netdev);
1021
1022err_out_free_res:
3d396eb1 1023 pci_release_regions(pdev);
6c80b18d
MT		 1024
1025err_out_disable_pdev:
2956640d 1026 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1027 pci_disable_device(pdev);
1028 return err;
1029}
1030
1031static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1032{
1033 struct netxen_adapter *adapter;
3176ff3e 1034 struct net_device *netdev;
3d396eb1 1035
6c80b18d 1036 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1037 if (adapter == NULL)
1038 return;
1039
6c80b18d
MT		 1040 netdev = adapter->netdev;
1041
96acb6eb
DP		 1042 unregister_netdev(netdev);
1043
96acb6eb 1044 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1 1045 netxen_nic_detach(adapter);
06e9d9f9
DP		 1046
1047 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1048 netxen_p3_free_mac_list(adapter);
96acb6eb 1049 }
3d396eb1 1050
439b454e
DP		 1051 if (adapter->portnum == 0)
1052 netxen_free_adapter_offload(adapter);
96acb6eb 1053
97daee83 1054 netxen_teardown_intr(adapter);
3052246c 1055
97daee83 1056 netxen_cleanup_pci_map(adapter);
595e3fb8
MT		 1057
1058 pci_release_regions(pdev);
3052246c 1059 pci_disable_device(pdev);
595e3fb8
MT		 1060 pci_set_drvdata(pdev, NULL);
1061
6c80b18d 1062 free_netdev(netdev);
3d396eb1
AK		 1063}
1064
0b72e659
DP		 1065static int
1066netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1067{
1068
1069 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1070 struct net_device *netdev = adapter->netdev;
1071
1072 netif_device_detach(netdev);
1073
1074 if (netif_running(netdev))
1075 netxen_nic_down(adapter, netdev);
1076
1077 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1078 netxen_nic_detach(adapter);
1079
1080 pci_save_state(pdev);
1081
1082 if (netxen_nic_wol_supported(adapter)) {
1083 pci_enable_wake(pdev, PCI_D3cold, 1);
1084 pci_enable_wake(pdev, PCI_D3hot, 1);
1085 }
1086
1087 pci_disable_device(pdev);
1088 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1089
1090 return 0;
1091}
1092
1093static int
1094netxen_nic_resume(struct pci_dev *pdev)
1095{
1096 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1097 struct net_device *netdev = adapter->netdev;
1098 int err;
1099
1100 pci_set_power_state(pdev, PCI_D0);
1101 pci_restore_state(pdev);
1102
1103 err = pci_enable_device(pdev);
1104 if (err)
1105 return err;
1106
1107 adapter->curr_window = 255;
1108
1109 err = netxen_start_firmware(adapter);
1110 if (err) {
1111 dev_err(&pdev->dev, "failed to start firmware\n");
1112 return err;
1113 }
1114
1115 if (netif_running(netdev)) {
1116 err = netxen_nic_attach(adapter);
1117 if (err)
1118 return err;
1119
1120 err = netxen_nic_up(adapter, netdev);
1121 if (err)
1122 return err;
1123
1124 netif_device_attach(netdev);
1125 }
1126
1127 return 0;
1128}
1129
3d396eb1
AK		 1130static int netxen_nic_open(struct net_device *netdev)
1131{
4cf1653a 1132 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1133 int err = 0;
3d396eb1 1134
dcd56fdb
DP		 1135 if (adapter->driver_mismatch)
1136 return -EIO;
1137
3d396eb1 1138 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
9f5bc7f1
DP		 1139 err = netxen_nic_attach(adapter);
1140 if (err)
3d396eb1 1141 return err;
ed25ffa1 1142 }
2956640d 1143
9f5bc7f1
DP		 1144 err = netxen_nic_up(adapter, netdev);
1145 if (err)
1146 goto err_out;
05aaa02d 1147
dcd56fdb 1148 netif_start_queue(netdev);
3d396eb1
AK		 1149
1150 return 0;
2956640d 1151
9f5bc7f1
DP		 1152err_out:
1153 netxen_nic_detach(adapter);
2956640d 1154 return err;
3d396eb1
AK		 1155}
1156
1157/*
1158 * netxen_nic_close - Disables a network interface entry point
1159 */
1160static int netxen_nic_close(struct net_device *netdev)
1161{
3176ff3e 1162 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1163
9f5bc7f1 1164 netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1165 return 0;
1166}
1167
391587c3 1168static bool netxen_tso_check(struct net_device *netdev,
cd1f8160
DP		 1169 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1170{
391587c3
DP		 1171 bool tso = false;
1172 u8 opcode = TX_ETHER_PKT;
cdff1036
DP		 1173 __be16 protocol = skb->protocol;
1174 u16 flags = 0;
1175
09640e63 1176 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
cdff1036
DP		 1177 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1178 protocol = vh->h_vlan_encapsulated_proto;
1179 flags = FLAGS_VLAN_TAGGED;
1180 }
cd1f8160 1181
391587c3
DP		 1182 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1183 skb_shinfo(skb)->gso_size > 0) {
1184
1185 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1186 desc->total_hdr_length =
1187 skb_transport_offset(skb) + tcp_hdrlen(skb);
1188
09640e63 1189 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3
DP		 1190 TX_TCP_LSO6 : TX_TCP_LSO;
1191 tso = true;
cd1f8160
DP		 1192
1193 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1194 u8 l4proto;
1195
09640e63 1196 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1197 l4proto = ip_hdr(skb)->protocol;
1198
1199 if (l4proto == IPPROTO_TCP)
1200 opcode = TX_TCP_PKT;
1201 else if(l4proto == IPPROTO_UDP)
1202 opcode = TX_UDP_PKT;
09640e63 1203 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1204 l4proto = ipv6_hdr(skb)->nexthdr;
1205
1206 if (l4proto == IPPROTO_TCP)
1207 opcode = TX_TCPV6_PKT;
1208 else if(l4proto == IPPROTO_UDP)
1209 opcode = TX_UDPV6_PKT;
1210 }
cd1f8160
DP		 1211 }
1212 desc->tcp_hdr_offset = skb_transport_offset(skb);
1213 desc->ip_hdr_offset = skb_network_offset(skb);
cdff1036 1214 netxen_set_tx_flags_opcode(desc, flags, opcode);
391587c3 1215 return tso;
cd1f8160
DP		 1216}
1217
6f703406
DP		 1218static void
1219netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1220 struct netxen_cmd_buffer *pbuf, int last)
1221{
1222 int k;
1223 struct netxen_skb_frag *buffrag;
1224
1225 buffrag = &pbuf->frag_array[0];
1226 pci_unmap_single(pdev, buffrag->dma,
1227 buffrag->length, PCI_DMA_TODEVICE);
1228
1229 for (k = 1; k < last; k++) {
1230 buffrag = &pbuf->frag_array[k];
1231 pci_unmap_page(pdev, buffrag->dma,
1232 buffrag->length, PCI_DMA_TODEVICE);
1233 }
1234}
1235
d32cc3d2
DP		 1236static inline void
1237netxen_clear_cmddesc(u64 *desc)
1238{
1239 int i;
1240 for (i = 0; i < 8; i++)
1241 desc[i] = 0ULL;
1242}
1243
1244static int
1245netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1246{
3176ff3e 1247 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1
AK		 1248 struct netxen_hardware_context *hw = &adapter->ahw;
1249 unsigned int first_seg_len = skb->len - skb->data_len;
391587c3 1250 struct netxen_cmd_buffer *pbuf;
3d396eb1 1251 struct netxen_skb_frag *buffrag;
391587c3 1252 struct cmd_desc_type0 *hwdesc;
6f703406
DP		 1253 struct pci_dev *pdev = adapter->pdev;
1254 dma_addr_t temp_dma;
391587c3 1255 int i, k;
3d396eb1 1256
ba53e6b4 1257 u32 producer, consumer;
391587c3 1258 int frag_count, no_of_desc;
438627c7 1259 u32 num_txd = adapter->num_txd;
391587c3 1260 bool is_tso = false;
3d396eb1 1261
3d396eb1
AK		 1262 frag_count = skb_shinfo(skb)->nr_frags + 1;
1263
3d396eb1
AK		 1264 /* There 4 fragments per descriptor */
1265 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1266
ba53e6b4
DP		 1267 producer = adapter->cmd_producer;
1268 smp_mb();
1269 consumer = adapter->last_cmd_consumer;
1270 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1271 netif_stop_queue(netdev);
1272 smp_mb();
1273 return NETDEV_TX_BUSY;
53a01e00 1274 }
3d396eb1 1275
3d396eb1 1276 /* Copy the descriptors into the hardware */
3d396eb1 1277 hwdesc = &hw->cmd_desc_head[producer];
d32cc3d2 1278 netxen_clear_cmddesc((u64 *)hwdesc);
3d396eb1
AK		 1279 /* Take skb->data itself */
1280 pbuf = &adapter->cmd_buf_arr[producer];
391587c3
DP		 1281
1282 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1283
3d396eb1 1284 pbuf->skb = skb;
3d396eb1 1285 pbuf->frag_count = frag_count;
3d396eb1 1286 buffrag = &pbuf->frag_array[0];
6f703406 1287 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
3d396eb1 1288 PCI_DMA_TODEVICE);
6f703406
DP		 1289 if (pci_dma_mapping_error(pdev, temp_dma))
1290 goto drop_packet;
1291
1292 buffrag->dma = temp_dma;
3d396eb1 1293 buffrag->length = first_seg_len;
391587c3
DP		 1294 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1295 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1296
d32cc3d2 1297 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
3d396eb1
AK		 1298 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1299
1300 for (i = 1, k = 1; i < frag_count; i++, k++) {
1301 struct skb_frag_struct *frag;
1302 int len, temp_len;
1303 unsigned long offset;
3d396eb1
AK		 1304
1305 /* move to next desc. if there is a need */
1306 if ((i & 0x3) == 0) {
1307 k = 0;
ba53e6b4 1308 producer = get_next_index(producer, num_txd);
3d396eb1 1309 hwdesc = &hw->cmd_desc_head[producer];
d32cc3d2 1310 netxen_clear_cmddesc((u64 *)hwdesc);
53a01e00 1311 pbuf = &adapter->cmd_buf_arr[producer];
1312 pbuf->skb = NULL;
3d396eb1
AK		 1313 }
1314 frag = &skb_shinfo(skb)->frags[i - 1];
1315 len = frag->size;
1316 offset = frag->page_offset;
1317
1318 temp_len = len;
6f703406 1319 temp_dma = pci_map_page(pdev, frag->page, offset,
3d396eb1 1320 len, PCI_DMA_TODEVICE);
6f703406
DP		 1321 if (pci_dma_mapping_error(pdev, temp_dma)) {
1322 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1323 goto drop_packet;
1324 }
3d396eb1
AK		 1325
1326 buffrag++;
1327 buffrag->dma = temp_dma;
1328 buffrag->length = temp_len;
1329
d32cc3d2 1330 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
3d396eb1
AK		 1331 switch (k) {
1332 case 0:
3d396eb1
AK		 1333 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1334 break;
1335 case 1:
3d396eb1
AK		 1336 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1337 break;
1338 case 2:
3d396eb1
AK		 1339 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1340 break;
1341 case 3:
3d396eb1
AK		 1342 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1343 break;
1344 }
1345 frag++;
1346 }
ba53e6b4 1347 producer = get_next_index(producer, num_txd);
3d396eb1 1348
3d396eb1
AK		 1349 /* For LSO, we need to copy the MAC/IP/TCP headers into
1350 * the descriptor ring
1351 */
391587c3 1352 if (is_tso) {
3d396eb1 1353 int hdr_len, first_hdr_len, more_hdr;
391587c3 1354 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
ed25ffa1
AK		 1355 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1356 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1357 more_hdr = 1;
1358 } else {
1359 first_hdr_len = hdr_len;
1360 more_hdr = 0;
1361 }
1362 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1363 hwdesc = &hw->cmd_desc_head[producer];
53a01e00 1364 pbuf = &adapter->cmd_buf_arr[producer];
1365 pbuf->skb = NULL;
3d396eb1
AK		 1366
1367 /* copy the first 64 bytes */
ed25ffa1 1368 memcpy(((void *)hwdesc) + 2,
3d396eb1 1369 (void *)(skb->data), first_hdr_len);
ba53e6b4 1370 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1371
1372 if (more_hdr) {
1373 hwdesc = &hw->cmd_desc_head[producer];
53a01e00 1374 pbuf = &adapter->cmd_buf_arr[producer];
1375 pbuf->skb = NULL;
3d396eb1
AK		 1376 /* copy the next 64 bytes - should be enough except
1377 * for pathological case
1378 */
d626f62b
ACM		 1379 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1380 hwdesc,
1381 (hdr_len -
1382 first_hdr_len));
ba53e6b4 1383 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1384 }
1385 }
6c80b18d 1386
ba53e6b4 1387 adapter->cmd_producer = producer;
5dc16268 1388 adapter->stats.txbytes += skb->len;
6c80b18d 1389
ba53e6b4 1390 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
3d396eb1 1391
ba53e6b4 1392 adapter->stats.xmitcalled++;
3d396eb1
AK		 1393 netdev->trans_start = jiffies;
1394
3d396eb1 1395 return NETDEV_TX_OK;
6f703406
DP		 1396
1397drop_packet:
1398 adapter->stats.txdropped++;
1399 dev_kfree_skb_any(skb);
1400 return NETDEV_TX_OK;
3d396eb1
AK		 1401}
1402
a97342f9
DP		 1403static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1404{
1405 struct net_device *netdev = adapter->netdev;
1406 uint32_t temp, temp_state, temp_val;
1407 int rv = 0;
1408
1409 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1410
1411 temp_state = nx_get_temp_state(temp);
1412 temp_val = nx_get_temp_val(temp);
1413
1414 if (temp_state == NX_TEMP_PANIC) {
1415 printk(KERN_ALERT
1416 "%s: Device temperature %d degrees C exceeds"
1417 " maximum allowed. Hardware has been shut down.\n",
1418 netxen_nic_driver_name, temp_val);
1419
1420 netif_carrier_off(netdev);
1421 netif_stop_queue(netdev);
1422 rv = 1;
1423 } else if (temp_state == NX_TEMP_WARN) {
1424 if (adapter->temp == NX_TEMP_NORMAL) {
1425 printk(KERN_ALERT
1426 "%s: Device temperature %d degrees C "
1427 "exceeds operating range."
1428 " Immediate action needed.\n",
1429 netxen_nic_driver_name, temp_val);
1430 }
1431 } else {
1432 if (adapter->temp == NX_TEMP_WARN) {
1433 printk(KERN_INFO
1434 "%s: Device temperature is now %d degrees C"
1435 " in normal range.\n", netxen_nic_driver_name,
1436 temp_val);
1437 }
1438 }
1439 adapter->temp = temp_state;
1440 return rv;
1441}
1442
1443static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1444{
1445 struct net_device *netdev = adapter->netdev;
1446 u32 val, port, linkup;
1447
1448 port = adapter->physical_port;
1449
24a7a455
DP		 1450 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1451 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1452 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1453 linkup = (val == XG_LINK_UP_P3);
c9fc891f 1454 } else {
24a7a455 1455 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1e2d0059 1456 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
24a7a455
DP		 1457 linkup = (val >> port) & 1;
1458 else {
c9fc891f
DP		 1459 val = (val >> port*8) & 0xff;
1460 linkup = (val == XG_LINK_UP);
c9fc891f 1461 }
a97342f9
DP		 1462 }
1463
1464 if (adapter->ahw.linkup && !linkup) {
1465 printk(KERN_INFO "%s: %s NIC Link is down\n",
1466 netxen_nic_driver_name, netdev->name);
1467 adapter->ahw.linkup = 0;
1468 if (netif_running(netdev)) {
1469 netif_carrier_off(netdev);
1470 netif_stop_queue(netdev);
1471 }
c7860a2a
DP		 1472
1473 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1474 } else if (!adapter->ahw.linkup && linkup) {
1475 printk(KERN_INFO "%s: %s NIC Link is up\n",
1476 netxen_nic_driver_name, netdev->name);
1477 adapter->ahw.linkup = 1;
1478 if (netif_running(netdev)) {
1479 netif_carrier_on(netdev);
1480 netif_wake_queue(netdev);
1481 }
c7860a2a
DP		 1482
1483 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1484 }
1485}
1486
3d396eb1
AK		 1487static void netxen_watchdog(unsigned long v)
1488{
1489 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1490
1491 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1492}
1493
a97342f9
DP		 1494void netxen_watchdog_task(struct work_struct *work)
1495{
1496 struct netxen_adapter *adapter =
1497 container_of(work, struct netxen_adapter, watchdog_task);
1498
1499 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1500 return;
1501
1502 netxen_nic_handle_phy_intr(adapter);
1503
922c4f2c
DP		 1504 if (netif_running(adapter->netdev))
1505 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1506}
1507
3d396eb1
AK		 1508static void netxen_tx_timeout(struct net_device *netdev)
1509{
3176ff3e
MT		 1510 struct netxen_adapter *adapter = (struct netxen_adapter *)
1511 netdev_priv(netdev);
1512 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1513}
1514
6d5aefb8 1515static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1516{
4790654c 1517 struct netxen_adapter *adapter =
3176ff3e 1518 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1
AK		 1519
1520 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1521 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1522
ba53e6b4
DP		 1523 netxen_nic_disable_int(adapter);
1524 napi_disable(&adapter->napi);
1525
6c80b18d 1526 adapter->netdev->trans_start = jiffies;
ba53e6b4
DP		 1527
1528 napi_enable(&adapter->napi);
1529 netxen_nic_enable_int(adapter);
6c80b18d 1530 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1531}
1532
a97342f9
DP		 1533/*
1534 * netxen_nic_get_stats - Get System Network Statistics
1535 * @netdev: network interface device structure
1536 */
1537struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1538{
1539 struct netxen_adapter *adapter = netdev_priv(netdev);
1540 struct net_device_stats *stats = &adapter->net_stats;
1541
1542 memset(stats, 0, sizeof(*stats));
1543
1544 /* total packets received */
1545 stats->rx_packets = adapter->stats.no_rcv;
1546 /* total packets transmitted */
1547 stats->tx_packets = adapter->stats.xmitedframes +
1548 adapter->stats.xmitfinished;
1549 /* total bytes received */
1550 stats->rx_bytes = adapter->stats.rxbytes;
1551 /* total bytes transmitted */
1552 stats->tx_bytes = adapter->stats.txbytes;
1553 /* bad packets received */
1554 stats->rx_errors = adapter->stats.rcvdbadskb;
1555 /* packet transmit problems */
1556 stats->tx_errors = adapter->stats.nocmddescriptor;
1557 /* no space in linux buffers */
1558 stats->rx_dropped = adapter->stats.rxdropped;
1559 /* no space available in linux */
1560 stats->tx_dropped = adapter->stats.txdropped;
1561
1562 return stats;
1563}
1564
e4c93c81 1565static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1566{
1daec86a 1567 struct netxen_adapter *adapter = data;
d71e1be8
DP		 1568 u32 status = 0;
1569
1570 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1571
1572 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1573 return IRQ_NONE;
e01872af 1574
d71e1be8
DP		 1575 if (adapter->ahw.revision_id >= NX_P3_B1) {
1576 /* check interrupt state machine, to be sure */
1577 status = adapter->pci_read_immediate(adapter,
1578 ISR_INT_STATE_REG);
1579 if (!ISR_LEGACY_INT_TRIGGERED(status))
1580 return IRQ_NONE;
1581
092bc571
DP		 1582 } else {
1583 unsigned long our_int = 0;
d71e1be8
DP		 1584
1585 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
092bc571 1586
d71e1be8 1587 /* not our interrupt */
092bc571 1588 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1589 return IRQ_NONE;
1590
092bc571
DP		 1591 /* claim interrupt */
1592 adapter->pci_write_normalize(adapter,
1593 CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1594 }
1595
092bc571
DP		 1596 /* clear interrupt */
1597 if (adapter->fw_major < 4)
1598 netxen_nic_disable_int(adapter);
1599
1600 adapter->pci_write_immediate(adapter,
1601 adapter->legacy_intr.tgt_status_reg,
1602 0xffffffff);
1603 /* read twice to ensure write is flushed */
1604 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1605 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1606
1607 napi_schedule(&adapter->napi);
3d396eb1
AK		 1608
1609 return IRQ_HANDLED;
1610}
1611
e4c93c81 1612static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d
DP		 1613{
1614 struct netxen_adapter *adapter = data;
1615
092bc571
DP		 1616 /* clear interrupt */
1617 adapter->pci_write_immediate(adapter,
1618 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1619
1620 napi_schedule(&adapter->napi);
05aaa02d
DP		 1621 return IRQ_HANDLED;
1622}
1623
b3df68f8
DP		 1624static irqreturn_t netxen_msix_intr(int irq, void *data)
1625{
1626 struct netxen_adapter *adapter = data;
1627
1628 napi_schedule(&adapter->napi);
1629 return IRQ_HANDLED;
1630}
1631
bea3348e 1632static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1633{
becf46a0
DP		 1634 struct netxen_adapter *adapter =
1635 container_of(napi, struct netxen_adapter, napi);
05aaa02d 1636 int tx_complete;
bea3348e 1637 int work_done;
3d396eb1 1638
05aaa02d 1639 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1640
becf46a0 1641 work_done = netxen_process_rcv_ring(adapter, budget);
3d396eb1 1642
05aaa02d 1643 if ((work_done < budget) && tx_complete) {
288379f0 1644 napi_complete(&adapter->napi);
3d396eb1
AK		 1645 netxen_nic_enable_int(adapter);
1646 }
1647
bea3348e 1648 return work_done;
3d396eb1
AK		 1649}
1650
1651#ifdef CONFIG_NET_POLL_CONTROLLER
1652static void netxen_nic_poll_controller(struct net_device *netdev)
1653{
3176ff3e 1654 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1655 disable_irq(adapter->irq);
1494a814 1656 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1657 enable_irq(adapter->irq);
1658}
1659#endif
3d396eb1
AK		 1660
1661static struct pci_driver netxen_driver = {
1662 .name = netxen_nic_driver_name,
1663 .id_table = netxen_pci_tbl,
1664 .probe = netxen_nic_probe,
0b72e659
DP		 1665 .remove = __devexit_p(netxen_nic_remove),
1666 .suspend = netxen_nic_suspend,
1667 .resume = netxen_nic_resume
3d396eb1
AK		 1668};
1669
1670/* Driver Registration on NetXen card */
1671
1672static int __init netxen_init_module(void)
1673{
79ea13ce 1674 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1675 return -ENOMEM;
1676
184231bd 1677 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1678}
1679
1680module_init(netxen_init_module);
1681
1682static void __exit netxen_exit_module(void)
1683{
3d396eb1 1684 pci_unregister_driver(&netxen_driver);
9de06610 1685 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1686}
1687
1688module_exit(netxen_exit_module);
Linux kernel - Deliverables
This page took 0.743694 seconds and 5 git commands to generate.