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CIFS: Fix endian conversion of vcnum field
[linux-2.6/mini2440.git] / drivers / net / netxen / netxen_nic_main.c
blobc172b6e24a9644f35047f3c6c0ba7f742a335dad
1 /*
2 * Copyright (C) 2003 - 2006 NetXen, Inc.
3 * All rights reserved.
4 *
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.
9 *
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.
14 *
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.
19 *
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
22 *
23 * Contact Information:
24 * info@netxen.com
25 * NetXen,
26 * 3965 Freedom Circle, Fourth floor,
27 * Santa Clara, CA 95054
28 *
29 *
30 * Main source file for NetXen NIC Driver on Linux
31 *
32 */
33
34 #include <linux/vmalloc.h>
35 #include <linux/highmem.h>
36 #include "netxen_nic_hw.h"
37
38 #include "netxen_nic.h"
39 #include "netxen_nic_phan_reg.h"
40
41 #include <linux/dma-mapping.h>
42 #include <linux/if_vlan.h>
43 #include <net/ip.h>
44 #include <linux/ipv6.h>
45
46 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
47 MODULE_LICENSE("GPL");
48 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
49
50 char netxen_nic_driver_name[] = "netxen_nic";
51 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
52 NETXEN_NIC_LINUX_VERSIONID;
53
54 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
55
56 /* Default to restricted 1G auto-neg mode */
57 static int wol_port_mode = 5;
58
59 static int use_msi = 1;
60
61 static int use_msi_x = 1;
62
63 /* Local functions to NetXen NIC driver */
64 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
65 const struct pci_device_id *ent);
66 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
67 static int netxen_nic_open(struct net_device *netdev);
68 static int netxen_nic_close(struct net_device *netdev);
69 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
70 static void netxen_tx_timeout(struct net_device *netdev);
71 static void netxen_tx_timeout_task(struct work_struct *work);
72 static void netxen_watchdog(unsigned long);
73 static int netxen_nic_poll(struct napi_struct *napi, int budget);
74 #ifdef CONFIG_NET_POLL_CONTROLLER
75 static void netxen_nic_poll_controller(struct net_device *netdev);
76 #endif
77 static irqreturn_t netxen_intr(int irq, void *data);
78 static irqreturn_t netxen_msi_intr(int irq, void *data);
79 static irqreturn_t netxen_msix_intr(int irq, void *data);
80
81 /* PCI Device ID Table */
82 #define ENTRY(device) \
83 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
84 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
85
86 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
87 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
88 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
89 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
90 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
91 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
92 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
93 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
94 ENTRY(PCI_DEVICE_ID_NX3031),
95 {0,}
96 };
97
98 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
99
100 /*
101 * In netxen_nic_down(), we must wait for any pending callback requests into
102 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
103 * reenabled right after it is deleted in netxen_nic_down().
104 * FLUSH_SCHEDULED_WORK() does this synchronization.
105 *
106 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
107 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
108 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
109 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
110 * linkwatch_event() to be executed which also attempts to acquire the rtnl
111 * lock thus causing a deadlock.
112 */
113
114 static struct workqueue_struct *netxen_workq;
115 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
116 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
117
118 static void netxen_watchdog(unsigned long);
119
120 static uint32_t crb_cmd_producer[4] = {
121 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
122 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
123 };
124
125 void
126 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
127 uint32_t crb_producer)
128 {
129 adapter->pci_write_normalize(adapter,
130 adapter->crb_addr_cmd_producer, crb_producer);
131 }
132
133 static uint32_t crb_cmd_consumer[4] = {
134 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
135 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
136 };
137
138 static inline void
139 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
140 u32 crb_consumer)
141 {
142 adapter->pci_write_normalize(adapter,
143 adapter->crb_addr_cmd_consumer, crb_consumer);
144 }
145
146 static uint32_t msi_tgt_status[8] = {
147 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
148 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
149 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
150 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
151 };
152
153 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
154
155 static inline void netxen_nic_disable_int(struct netxen_adapter *adapter)
156 {
157 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0);
158 }
159
160 static inline void netxen_nic_enable_int(struct netxen_adapter *adapter)
161 {
162 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1);
163
164 if (!NETXEN_IS_MSI_FAMILY(adapter))
165 adapter->pci_write_immediate(adapter,
166 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
167 }
168
169 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
170 {
171 struct pci_dev *pdev = adapter->pdev;
172 int err;
173 uint64_t mask;
174
175 #ifdef CONFIG_IA64
176 adapter->dma_mask = DMA_32BIT_MASK;
177 #else
178 if (revision_id >= NX_P3_B0) {
179 /* should go to DMA_64BIT_MASK */
180 adapter->dma_mask = DMA_39BIT_MASK;
181 mask = DMA_39BIT_MASK;
182 } else if (revision_id == NX_P3_A2) {
183 adapter->dma_mask = DMA_39BIT_MASK;
184 mask = DMA_39BIT_MASK;
185 } else if (revision_id == NX_P2_C1) {
186 adapter->dma_mask = DMA_35BIT_MASK;
187 mask = DMA_35BIT_MASK;
188 } else {
189 adapter->dma_mask = DMA_32BIT_MASK;
190 mask = DMA_32BIT_MASK;
191 goto set_32_bit_mask;
192 }
193
194 /*
195 * Consistent DMA mask is set to 32 bit because it cannot be set to
196 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
197 * come off this pool.
198 */
199 if (pci_set_dma_mask(pdev, mask) == 0 &&
200 pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) == 0) {
201 adapter->pci_using_dac = 1;
202 return 0;
203 }
204 set_32_bit_mask:
205 #endif /* CONFIG_IA64 */
206
207 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
208 if (!err)
209 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
210 if (err) {
211 DPRINTK(ERR, "No usable DMA configuration, aborting:%d\n", err);
212 return err;
213 }
214
215 adapter->pci_using_dac = 0;
216 return 0;
217 }
218
219 static void netxen_check_options(struct netxen_adapter *adapter)
220 {
221 switch (adapter->ahw.boardcfg.board_type) {
222 case NETXEN_BRDTYPE_P3_HMEZ:
223 case NETXEN_BRDTYPE_P3_XG_LOM:
224 case NETXEN_BRDTYPE_P3_10G_CX4:
225 case NETXEN_BRDTYPE_P3_10G_CX4_LP:
226 case NETXEN_BRDTYPE_P3_IMEZ:
227 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS:
228 case NETXEN_BRDTYPE_P3_10G_SFP_QT:
229 case NETXEN_BRDTYPE_P3_10G_SFP_CT:
230 case NETXEN_BRDTYPE_P3_10G_XFP:
231 case NETXEN_BRDTYPE_P3_10000_BASE_T:
232 adapter->msix_supported = !!use_msi_x;
233 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
234 break;
235
236 case NETXEN_BRDTYPE_P2_SB31_10G:
237 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
238 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
239 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
240 adapter->msix_supported = 0;
241 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
242 break;
243
244 case NETXEN_BRDTYPE_P3_REF_QG:
245 case NETXEN_BRDTYPE_P3_4_GB:
246 case NETXEN_BRDTYPE_P3_4_GB_MM:
247 adapter->msix_supported = !!use_msi_x;
248 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
249 break;
250
251 case NETXEN_BRDTYPE_P2_SB35_4G:
252 case NETXEN_BRDTYPE_P2_SB31_2G:
253 adapter->msix_supported = 0;
254 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
255 break;
256
257 case NETXEN_BRDTYPE_P3_10G_TP:
258 adapter->msix_supported = !!use_msi_x;
259 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
260 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
261 else
262 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
263 break;
264
265 default:
266 adapter->msix_supported = 0;
267 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
268
269 printk(KERN_WARNING "Unknown board type(0x%x)\n",
270 adapter->ahw.boardcfg.board_type);
271 break;
272 }
273
274 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
275 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
276 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
277
278 adapter->max_possible_rss_rings = 1;
279 return;
280 }
281
282 static int
283 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
284 {
285 u32 val, timeout;
286
287 if (first_boot == 0x55555555) {
288 /* This is the first boot after power up */
289 adapter->pci_write_normalize(adapter,
290 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
291
292 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
293 return 0;
294
295 /* PCI bus master workaround */
296 adapter->hw_read_wx(adapter,
297 NETXEN_PCIE_REG(0x4), &first_boot, 4);
298 if (!(first_boot & 0x4)) {
299 first_boot |= 0x4;
300 adapter->hw_write_wx(adapter,
301 NETXEN_PCIE_REG(0x4), &first_boot, 4);
302 adapter->hw_read_wx(adapter,
303 NETXEN_PCIE_REG(0x4), &first_boot, 4);
304 }
305
306 /* This is the first boot after power up */
307 adapter->hw_read_wx(adapter,
308 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
309 if (first_boot != 0x80000f) {
310 /* clear the register for future unloads/loads */
311 adapter->pci_write_normalize(adapter,
312 NETXEN_CAM_RAM(0x1fc), 0);
313 return -EIO;
314 }
315
316 /* Start P2 boot loader */
317 val = adapter->pci_read_normalize(adapter,
318 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
319 adapter->pci_write_normalize(adapter,
320 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
321 timeout = 0;
322 do {
323 msleep(1);
324 val = adapter->pci_read_normalize(adapter,
325 NETXEN_CAM_RAM(0x1fc));
326
327 if (++timeout > 5000)
328 return -EIO;
329
330 } while (val == NETXEN_BDINFO_MAGIC);
331 }
332 return 0;
333 }
334
335 static void netxen_set_port_mode(struct netxen_adapter *adapter)
336 {
337 u32 val, data;
338
339 val = adapter->ahw.boardcfg.board_type;
340 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
341 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
342 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
343 data = NETXEN_PORT_MODE_802_3_AP;
344 adapter->hw_write_wx(adapter,
345 NETXEN_PORT_MODE_ADDR, &data, 4);
346 } else if (port_mode == NETXEN_PORT_MODE_XG) {
347 data = NETXEN_PORT_MODE_XG;
348 adapter->hw_write_wx(adapter,
349 NETXEN_PORT_MODE_ADDR, &data, 4);
350 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
351 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
352 adapter->hw_write_wx(adapter,
353 NETXEN_PORT_MODE_ADDR, &data, 4);
354 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
355 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
356 adapter->hw_write_wx(adapter,
357 NETXEN_PORT_MODE_ADDR, &data, 4);
358 } else {
359 data = NETXEN_PORT_MODE_AUTO_NEG;
360 adapter->hw_write_wx(adapter,
361 NETXEN_PORT_MODE_ADDR, &data, 4);
362 }
363
364 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
365 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
366 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
367 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
368 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
369 }
370 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
371 &wol_port_mode, 4);
372 }
373 }
374
375 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
376 {
377 u32 control;
378 int pos;
379
380 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
381 if (pos) {
382 pci_read_config_dword(pdev, pos, &control);
383 if (enable)
384 control |= PCI_MSIX_FLAGS_ENABLE;
385 else
386 control = 0;
387 pci_write_config_dword(pdev, pos, control);
388 }
389 }
390
391 static void netxen_init_msix_entries(struct netxen_adapter *adapter)
392 {
393 int i;
394
395 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
396 adapter->msix_entries[i].entry = i;
397 }
398
399 static int
400 netxen_read_mac_addr(struct netxen_adapter *adapter)
401 {
402 int i;
403 unsigned char *p;
404 __le64 mac_addr;
405 struct net_device *netdev = adapter->netdev;
406 struct pci_dev *pdev = adapter->pdev;
407
408 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
409 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
410 return -EIO;
411 } else {
412 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
413 return -EIO;
414 }
415
416 p = (unsigned char *)&mac_addr;
417 for (i = 0; i < 6; i++)
418 netdev->dev_addr[i] = *(p + 5 - i);
419
420 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
421
422 /* set station address */
423
424 if (!is_valid_ether_addr(netdev->perm_addr))
425 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
426 else
427 adapter->macaddr_set(adapter, netdev->dev_addr);
428
429 return 0;
430 }
431
432 static void netxen_set_multicast_list(struct net_device *dev)
433 {
434 struct netxen_adapter *adapter = netdev_priv(dev);
435
436 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
437 netxen_p3_nic_set_multi(dev);
438 else
439 netxen_p2_nic_set_multi(dev);
440 }
441
442 static const struct net_device_ops netxen_netdev_ops = {
443 .ndo_open = netxen_nic_open,
444 .ndo_stop = netxen_nic_close,
445 .ndo_start_xmit = netxen_nic_xmit_frame,
446 .ndo_get_stats = netxen_nic_get_stats,
447 .ndo_validate_addr = eth_validate_addr,
448 .ndo_set_multicast_list = netxen_set_multicast_list,
449 .ndo_set_mac_address = netxen_nic_set_mac,
450 .ndo_change_mtu = netxen_nic_change_mtu,
451 .ndo_tx_timeout = netxen_tx_timeout,
452 #ifdef CONFIG_NET_POLL_CONTROLLER
453 .ndo_poll_controller = netxen_nic_poll_controller,
454 #endif
455 };
456
457 /*
458 * netxen_nic_probe()
459 *
460 * The Linux system will invoke this after identifying the vendor ID and
461 * device Id in the pci_tbl supported by this module.
462 *
463 * A quad port card has one operational PCI config space, (function 0),
464 * which is used to access all four ports.
465 *
466 * This routine will initialize the adapter, and setup the global parameters
467 * along with the port's specific structure.
468 */
469 static int __devinit
470 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
471 {
472 struct net_device *netdev = NULL;
473 struct netxen_adapter *adapter = NULL;
474 void __iomem *mem_ptr0 = NULL;
475 void __iomem *mem_ptr1 = NULL;
476 void __iomem *mem_ptr2 = NULL;
477 unsigned long first_page_group_end;
478 unsigned long first_page_group_start;
479
480
481 u8 __iomem *db_ptr = NULL;
482 unsigned long mem_base, mem_len, db_base, db_len, pci_len0 = 0;
483 int i = 0, err;
484 int first_driver, first_boot;
485 u32 val;
486 int pci_func_id = PCI_FUNC(pdev->devfn);
487 struct netxen_legacy_intr_set *legacy_intrp;
488 uint8_t revision_id;
489
490 if (pci_func_id == 0)
491 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
492
493 if (pdev->class != 0x020000) {
494 printk(KERN_DEBUG "NetXen function %d, class %x will not "
495 "be enabled.\n",pci_func_id, pdev->class);
496 return -ENODEV;
497 }
498
499 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
500 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
501 "will not be enabled.\n",
502 NX_P3_A0, NX_P3_B1);
503 return -ENODEV;
504 }
505
506 if ((err = pci_enable_device(pdev)))
507 return err;
508
509 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
510 err = -ENODEV;
511 goto err_out_disable_pdev;
512 }
513
514 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
515 goto err_out_disable_pdev;
516
517 pci_set_master(pdev);
518
519 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
520 if(!netdev) {
521 printk(KERN_ERR"%s: Failed to allocate memory for the "
522 "device block.Check system memory resource"
523 " usage.\n", netxen_nic_driver_name);
524 goto err_out_free_res;
525 }
526
527 SET_NETDEV_DEV(netdev, &pdev->dev);
528
529 adapter = netdev_priv(netdev);
530 adapter->netdev = netdev;
531 adapter->pdev = pdev;
532 adapter->ahw.pci_func = pci_func_id;
533
534 revision_id = pdev->revision;
535 adapter->ahw.revision_id = revision_id;
536
537 err = nx_set_dma_mask(adapter, revision_id);
538 if (err)
539 goto err_out_free_netdev;
540
541 rwlock_init(&adapter->adapter_lock);
542 adapter->ahw.qdr_sn_window = -1;
543 adapter->ahw.ddr_mn_window = -1;
544
545 /* remap phys address */
546 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
547 mem_len = pci_resource_len(pdev, 0);
548 pci_len0 = 0;
549
550 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
551 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
552 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
553 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
554 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
555 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
556 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
557 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
558 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
559
560 /* 128 Meg of memory */
561 if (mem_len == NETXEN_PCI_128MB_SIZE) {
562 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
563 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
564 SECOND_PAGE_GROUP_SIZE);
565 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
566 THIRD_PAGE_GROUP_SIZE);
567 first_page_group_start = FIRST_PAGE_GROUP_START;
568 first_page_group_end = FIRST_PAGE_GROUP_END;
569 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
570 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
571 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
572 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
573 first_page_group_start = 0;
574 first_page_group_end = 0;
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
594 pci_len0 = mem_len;
595 first_page_group_start = 0;
596 first_page_group_end = 0;
597
598 adapter->ahw.ddr_mn_window = 0;
599 adapter->ahw.qdr_sn_window = 0;
600
601 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
602 (pci_func_id * 0x20);
603 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
604 if (pci_func_id < 4)
605 adapter->ahw.ms_win_crb += (pci_func_id * 0x20);
606 else
607 adapter->ahw.ms_win_crb +=
608 0xA0 + ((pci_func_id - 4) * 0x10);
609 } else {
610 err = -EIO;
611 goto err_out_free_netdev;
612 }
613
614 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
615
616 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
617 db_len = pci_resource_len(pdev, 4);
618
619 if (db_len == 0) {
620 printk(KERN_ERR "%s: doorbell is disabled\n",
621 netxen_nic_driver_name);
622 err = -EIO;
623 goto err_out_iounmap;
624 }
625 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
626 db_len);
627
628 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
629 if (!db_ptr) {
630 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
631 netxen_nic_driver_name);
632 err = -EIO;
633 goto err_out_iounmap;
634 }
635 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
636
637 adapter->ahw.pci_base0 = mem_ptr0;
638 adapter->ahw.pci_len0 = pci_len0;
639 adapter->ahw.first_page_group_start = first_page_group_start;
640 adapter->ahw.first_page_group_end = first_page_group_end;
641 adapter->ahw.pci_base1 = mem_ptr1;
642 adapter->ahw.pci_base2 = mem_ptr2;
643 adapter->ahw.db_base = db_ptr;
644 adapter->ahw.db_len = db_len;
645
646 netif_napi_add(netdev, &adapter->napi,
647 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
648
649 if (revision_id >= NX_P3_B0)
650 legacy_intrp = &legacy_intr[pci_func_id];
651 else
652 legacy_intrp = &legacy_intr[0];
653
654 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
655 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
656 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
657 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
658
659 /* this will be read from FW later */
660 adapter->intr_scheme = -1;
661 adapter->msi_mode = -1;
662
663 /* This will be reset for mezz cards */
664 adapter->portnum = pci_func_id;
665 adapter->status &= ~NETXEN_NETDEV_STATUS;
666 adapter->rx_csum = 1;
667 adapter->mc_enabled = 0;
668 if (NX_IS_REVISION_P3(revision_id))
669 adapter->max_mc_count = 38;
670 else
671 adapter->max_mc_count = 16;
672
673 netdev->netdev_ops = &netxen_netdev_ops;
674 netdev->watchdog_timeo = 2*HZ;
675
676 netxen_nic_change_mtu(netdev, netdev->mtu);
677
678 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
679
680 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
681 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
682
683 if (NX_IS_REVISION_P3(revision_id)) {
684 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
685 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
686 }
687
688 if (adapter->pci_using_dac) {
689 netdev->features |= NETIF_F_HIGHDMA;
690 netdev->vlan_features |= NETIF_F_HIGHDMA;
691 }
692
693 /*
694 * Set the CRB window to invalid. If any register in window 0 is
695 * accessed it should set the window to 0 and then reset it to 1.
696 */
697 adapter->curr_window = 255;
698
699 if (netxen_nic_get_board_info(adapter) != 0) {
700 printk("%s: Error getting board config info.\n",
701 netxen_nic_driver_name);
702 err = -EIO;
703 goto err_out_iounmap;
704 }
705
706 netxen_initialize_adapter_ops(adapter);
707
708 /* Mezz cards have PCI function 0,2,3 enabled */
709 switch (adapter->ahw.boardcfg.board_type) {
710 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
711 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
712 if (pci_func_id >= 2)
713 adapter->portnum = pci_func_id - 2;
714 break;
715 default:
716 break;
717 }
718
719 /*
720 * This call will setup various max rx/tx counts.
721 * It must be done before any buffer/ring allocations.
722 */
723 netxen_check_options(adapter);
724
725 first_driver = 0;
726 if (NX_IS_REVISION_P3(revision_id)) {
727 if (adapter->ahw.pci_func == 0)
728 first_driver = 1;
729 } else {
730 if (adapter->portnum == 0)
731 first_driver = 1;
732 }
733
734 if (first_driver) {
735 first_boot = adapter->pci_read_normalize(adapter,
736 NETXEN_CAM_RAM(0x1fc));
737
738 err = netxen_check_hw_init(adapter, first_boot);
739 if (err) {
740 printk(KERN_ERR "%s: error in init HW init sequence\n",
741 netxen_nic_driver_name);
742 goto err_out_iounmap;
743 }
744
745 if (NX_IS_REVISION_P3(revision_id))
746 netxen_set_port_mode(adapter);
747
748 if (first_boot != 0x55555555) {
749 adapter->pci_write_normalize(adapter,
750 CRB_CMDPEG_STATE, 0);
751 netxen_pinit_from_rom(adapter, 0);
752 msleep(1);
753 }
754 netxen_load_firmware(adapter);
755
756 if (NX_IS_REVISION_P2(revision_id)) {
757
758 /* Initialize multicast addr pool owners */
759 val = 0x7654;
760 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
761 val |= 0x0f000000;
762 netxen_crb_writelit_adapter(adapter,
763 NETXEN_MAC_ADDR_CNTL_REG, val);
764
765 }
766
767 err = netxen_initialize_adapter_offload(adapter);
768 if (err)
769 goto err_out_iounmap;
770
771 /*
772 * Tell the hardware our version number.
773 */
774 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
775 | ((_NETXEN_NIC_LINUX_MINOR << 8))
776 | (_NETXEN_NIC_LINUX_SUBVERSION);
777 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i);
778
779 /* Handshake with the card before we register the devices. */
780 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
781 if (err)
782 goto err_out_free_offload;
783
784 } /* first_driver */
785
786 netxen_nic_flash_print(adapter);
787
788 if (NX_IS_REVISION_P3(revision_id)) {
789 adapter->hw_read_wx(adapter,
790 NETXEN_MIU_MN_CONTROL, &val, 4);
791 adapter->ahw.cut_through = (val & 0x4) ? 1 : 0;
792 dev_info(&pdev->dev, "firmware running in %s mode\n",
793 adapter->ahw.cut_through ? "cut through" : "legacy");
794 }
795
796 /*
797 * See if the firmware gave us a virtual-physical port mapping.
798 */
799 adapter->physical_port = adapter->portnum;
800 if (adapter->fw_major < 4) {
801 i = adapter->pci_read_normalize(adapter,
802 CRB_V2P(adapter->portnum));
803 if (i != 0x55555555)
804 adapter->physical_port = i;
805 }
806
807 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
808
809 netxen_set_msix_bit(pdev, 0);
810
811 if (NX_IS_REVISION_P3(revision_id)) {
812 if ((mem_len != NETXEN_PCI_128MB_SIZE) &&
813 mem_len != NETXEN_PCI_2MB_SIZE)
814 adapter->msix_supported = 0;
815 }
816
817 if (adapter->msix_supported) {
818
819 netxen_init_msix_entries(adapter);
820
821 if (pci_enable_msix(pdev, adapter->msix_entries,
822 MSIX_ENTRIES_PER_ADAPTER))
823 goto request_msi;
824
825 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
826 netxen_set_msix_bit(pdev, 1);
827 dev_info(&pdev->dev, "using msi-x interrupts\n");
828
829 } else {
830 request_msi:
831 if (use_msi && !pci_enable_msi(pdev)) {
832 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
833 dev_info(&pdev->dev, "using msi interrupts\n");
834 } else
835 dev_info(&pdev->dev, "using legacy interrupts\n");
836 }
837
838 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
839 netdev->irq = adapter->msix_entries[0].vector;
840 else
841 netdev->irq = pdev->irq;
842
843 err = netxen_receive_peg_ready(adapter);
844 if (err)
845 goto err_out_disable_msi;
846
847 init_timer(&adapter->watchdog_timer);
848 adapter->watchdog_timer.function = &netxen_watchdog;
849 adapter->watchdog_timer.data = (unsigned long)adapter;
850 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
851 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
852
853 err = netxen_read_mac_addr(adapter);
854 if (err)
855 dev_warn(&pdev->dev, "failed to read mac addr\n");
856
857 netif_carrier_off(netdev);
858 netif_stop_queue(netdev);
859
860 if ((err = register_netdev(netdev))) {
861 printk(KERN_ERR "%s: register_netdev failed port #%d"
862 " aborting\n", netxen_nic_driver_name,
863 adapter->portnum);
864 err = -EIO;
865 goto err_out_disable_msi;
866 }
867
868 pci_set_drvdata(pdev, adapter);
869
870 switch (adapter->ahw.board_type) {
871 case NETXEN_NIC_GBE:
872 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
873 adapter->netdev->name);
874 break;
875 case NETXEN_NIC_XGBE:
876 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
877 adapter->netdev->name);
878 break;
879 }
880
881 return 0;
882
883 err_out_disable_msi:
884 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
885 pci_disable_msix(pdev);
886 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
887 pci_disable_msi(pdev);
888
889 err_out_free_offload:
890 if (first_driver)
891 netxen_free_adapter_offload(adapter);
892
893 err_out_iounmap:
894 if (db_ptr)
895 iounmap(db_ptr);
896
897 if (mem_ptr0)
898 iounmap(mem_ptr0);
899 if (mem_ptr1)
900 iounmap(mem_ptr1);
901 if (mem_ptr2)
902 iounmap(mem_ptr2);
903
904 err_out_free_netdev:
905 free_netdev(netdev);
906
907 err_out_free_res:
908 pci_release_regions(pdev);
909
910 err_out_disable_pdev:
911 pci_set_drvdata(pdev, NULL);
912 pci_disable_device(pdev);
913 return err;
914 }
915
916 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
917 {
918 struct netxen_adapter *adapter;
919 struct net_device *netdev;
920
921 adapter = pci_get_drvdata(pdev);
922 if (adapter == NULL)
923 return;
924
925 netdev = adapter->netdev;
926
927 unregister_netdev(netdev);
928
929 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
930 netxen_free_hw_resources(adapter);
931 netxen_release_rx_buffers(adapter);
932 netxen_free_sw_resources(adapter);
933
934 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
935 netxen_p3_free_mac_list(adapter);
936 }
937
938 if (adapter->portnum == 0)
939 netxen_free_adapter_offload(adapter);
940
941 if (adapter->irq)
942 free_irq(adapter->irq, adapter);
943
944 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
945 pci_disable_msix(pdev);
946 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
947 pci_disable_msi(pdev);
948
949 iounmap(adapter->ahw.db_base);
950 iounmap(adapter->ahw.pci_base0);
951 if (adapter->ahw.pci_base1 != NULL)
952 iounmap(adapter->ahw.pci_base1);
953 if (adapter->ahw.pci_base2 != NULL)
954 iounmap(adapter->ahw.pci_base2);
955
956 pci_release_regions(pdev);
957 pci_disable_device(pdev);
958 pci_set_drvdata(pdev, NULL);
959
960 free_netdev(netdev);
961 }
962
963 /*
964 * Called when a network interface is made active
965 * @returns 0 on success, negative value on failure
966 */
967 static int netxen_nic_open(struct net_device *netdev)
968 {
969 struct netxen_adapter *adapter = netdev_priv(netdev);
970 int err = 0;
971 int ctx, ring;
972 irq_handler_t handler;
973 unsigned long flags = IRQF_SAMPLE_RANDOM;
974
975 if (adapter->driver_mismatch)
976 return -EIO;
977
978 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
979 err = netxen_init_firmware(adapter);
980 if (err != 0) {
981 printk(KERN_ERR "Failed to init firmware\n");
982 return -EIO;
983 }
984
985 if (adapter->fw_major < 4)
986 adapter->max_rds_rings = 3;
987 else
988 adapter->max_rds_rings = 2;
989
990 err = netxen_alloc_sw_resources(adapter);
991 if (err) {
992 printk(KERN_ERR "%s: Error in setting sw resources\n",
993 netdev->name);
994 return err;
995 }
996
997 netxen_nic_clear_stats(adapter);
998
999 err = netxen_alloc_hw_resources(adapter);
1000 if (err) {
1001 printk(KERN_ERR "%s: Error in setting hw resources\n",
1002 netdev->name);
1003 goto err_out_free_sw;
1004 }
1005
1006 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
1007 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
1008 printk(KERN_ERR "%s: Firmware interrupt scheme is "
1009 "incompatible with driver\n",
1010 netdev->name);
1011 adapter->driver_mismatch = 1;
1012 goto err_out_free_hw;
1013 }
1014
1015 if (adapter->fw_major < 4) {
1016 adapter->crb_addr_cmd_producer =
1017 crb_cmd_producer[adapter->portnum];
1018 adapter->crb_addr_cmd_consumer =
1019 crb_cmd_consumer[adapter->portnum];
1020
1021 netxen_nic_update_cmd_producer(adapter, 0);
1022 netxen_nic_update_cmd_consumer(adapter, 0);
1023 }
1024
1025 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1026 for (ring = 0; ring < adapter->max_rds_rings; ring++)
1027 netxen_post_rx_buffers(adapter, ctx, ring);
1028 }
1029 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1030 handler = netxen_msix_intr;
1031 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1032 handler = netxen_msi_intr;
1033 else {
1034 flags |= IRQF_SHARED;
1035 handler = netxen_intr;
1036 }
1037 adapter->irq = netdev->irq;
1038 err = request_irq(adapter->irq, handler,
1039 flags, netdev->name, adapter);
1040 if (err) {
1041 printk(KERN_ERR "request_irq failed with: %d\n", err);
1042 goto err_out_free_rxbuf;
1043 }
1044
1045 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1046 }
1047
1048 /* Done here again so that even if phantom sw overwrote it,
1049 * we set it */
1050 err = adapter->init_port(adapter, adapter->physical_port);
1051 if (err) {
1052 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1053 netxen_nic_driver_name, adapter->portnum);
1054 goto err_out_free_irq;
1055 }
1056 adapter->macaddr_set(adapter, netdev->dev_addr);
1057
1058 netxen_nic_set_link_parameters(adapter);
1059
1060 netxen_set_multicast_list(netdev);
1061 if (adapter->set_mtu)
1062 adapter->set_mtu(adapter, netdev->mtu);
1063
1064 adapter->ahw.linkup = 0;
1065 mod_timer(&adapter->watchdog_timer, jiffies);
1066
1067 napi_enable(&adapter->napi);
1068 netxen_nic_enable_int(adapter);
1069
1070 netif_start_queue(netdev);
1071
1072 return 0;
1073
1074 err_out_free_irq:
1075 free_irq(adapter->irq, adapter);
1076 err_out_free_rxbuf:
1077 netxen_release_rx_buffers(adapter);
1078 err_out_free_hw:
1079 netxen_free_hw_resources(adapter);
1080 err_out_free_sw:
1081 netxen_free_sw_resources(adapter);
1082 return err;
1083 }
1084
1085 /*
1086 * netxen_nic_close - Disables a network interface entry point
1087 */
1088 static int netxen_nic_close(struct net_device *netdev)
1089 {
1090 struct netxen_adapter *adapter = netdev_priv(netdev);
1091
1092 netif_carrier_off(netdev);
1093 netif_stop_queue(netdev);
1094 napi_disable(&adapter->napi);
1095
1096 if (adapter->stop_port)
1097 adapter->stop_port(adapter);
1098
1099 netxen_nic_disable_int(adapter);
1100
1101 netxen_release_tx_buffers(adapter);
1102
1103 FLUSH_SCHEDULED_WORK();
1104 del_timer_sync(&adapter->watchdog_timer);
1105
1106 return 0;
1107 }
1108
1109 static bool netxen_tso_check(struct net_device *netdev,
1110 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1111 {
1112 bool tso = false;
1113 u8 opcode = TX_ETHER_PKT;
1114 __be16 protocol = skb->protocol;
1115 u16 flags = 0;
1116
1117 if (protocol == __constant_htons(ETH_P_8021Q)) {
1118 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1119 protocol = vh->h_vlan_encapsulated_proto;
1120 flags = FLAGS_VLAN_TAGGED;
1121 }
1122
1123 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1124 skb_shinfo(skb)->gso_size > 0) {
1125
1126 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1127 desc->total_hdr_length =
1128 skb_transport_offset(skb) + tcp_hdrlen(skb);
1129
1130 opcode = (protocol == __constant_htons(ETH_P_IPV6)) ?
1131 TX_TCP_LSO6 : TX_TCP_LSO;
1132 tso = true;
1133
1134 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1135 u8 l4proto;
1136
1137 if (protocol == __constant_htons(ETH_P_IP)) {
1138 l4proto = ip_hdr(skb)->protocol;
1139
1140 if (l4proto == IPPROTO_TCP)
1141 opcode = TX_TCP_PKT;
1142 else if(l4proto == IPPROTO_UDP)
1143 opcode = TX_UDP_PKT;
1144 } else if (protocol == __constant_htons(ETH_P_IPV6)) {
1145 l4proto = ipv6_hdr(skb)->nexthdr;
1146
1147 if (l4proto == IPPROTO_TCP)
1148 opcode = TX_TCPV6_PKT;
1149 else if(l4proto == IPPROTO_UDP)
1150 opcode = TX_UDPV6_PKT;
1151 }
1152 }
1153 desc->tcp_hdr_offset = skb_transport_offset(skb);
1154 desc->ip_hdr_offset = skb_network_offset(skb);
1155 netxen_set_tx_flags_opcode(desc, flags, opcode);
1156 return tso;
1157 }
1158
1159 static void
1160 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1161 struct netxen_cmd_buffer *pbuf, int last)
1162 {
1163 int k;
1164 struct netxen_skb_frag *buffrag;
1165
1166 buffrag = &pbuf->frag_array[0];
1167 pci_unmap_single(pdev, buffrag->dma,
1168 buffrag->length, PCI_DMA_TODEVICE);
1169
1170 for (k = 1; k < last; k++) {
1171 buffrag = &pbuf->frag_array[k];
1172 pci_unmap_page(pdev, buffrag->dma,
1173 buffrag->length, PCI_DMA_TODEVICE);
1174 }
1175 }
1176
1177 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1178 {
1179 struct netxen_adapter *adapter = netdev_priv(netdev);
1180 struct netxen_hardware_context *hw = &adapter->ahw;
1181 unsigned int first_seg_len = skb->len - skb->data_len;
1182 struct netxen_cmd_buffer *pbuf;
1183 struct netxen_skb_frag *buffrag;
1184 struct cmd_desc_type0 *hwdesc;
1185 struct pci_dev *pdev = adapter->pdev;
1186 dma_addr_t temp_dma;
1187 int i, k;
1188
1189 u32 producer, consumer;
1190 int frag_count, no_of_desc;
1191 u32 num_txd = adapter->max_tx_desc_count;
1192 bool is_tso = false;
1193
1194 frag_count = skb_shinfo(skb)->nr_frags + 1;
1195
1196 /* There 4 fragments per descriptor */
1197 no_of_desc = (frag_count + 3) >> 2;
1198
1199 producer = adapter->cmd_producer;
1200 smp_mb();
1201 consumer = adapter->last_cmd_consumer;
1202 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1203 netif_stop_queue(netdev);
1204 smp_mb();
1205 return NETDEV_TX_BUSY;
1206 }
1207
1208 /* Copy the descriptors into the hardware */
1209 hwdesc = &hw->cmd_desc_head[producer];
1210 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1211 /* Take skb->data itself */
1212 pbuf = &adapter->cmd_buf_arr[producer];
1213
1214 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1215
1216 pbuf->skb = skb;
1217 pbuf->frag_count = frag_count;
1218 buffrag = &pbuf->frag_array[0];
1219 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1220 PCI_DMA_TODEVICE);
1221 if (pci_dma_mapping_error(pdev, temp_dma))
1222 goto drop_packet;
1223
1224 buffrag->dma = temp_dma;
1225 buffrag->length = first_seg_len;
1226 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1227 netxen_set_tx_port(hwdesc, adapter->portnum);
1228
1229 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1230 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1231
1232 for (i = 1, k = 1; i < frag_count; i++, k++) {
1233 struct skb_frag_struct *frag;
1234 int len, temp_len;
1235 unsigned long offset;
1236
1237 /* move to next desc. if there is a need */
1238 if ((i & 0x3) == 0) {
1239 k = 0;
1240 producer = get_next_index(producer, num_txd);
1241 hwdesc = &hw->cmd_desc_head[producer];
1242 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1243 pbuf = &adapter->cmd_buf_arr[producer];
1244 pbuf->skb = NULL;
1245 }
1246 frag = &skb_shinfo(skb)->frags[i - 1];
1247 len = frag->size;
1248 offset = frag->page_offset;
1249
1250 temp_len = len;
1251 temp_dma = pci_map_page(pdev, frag->page, offset,
1252 len, PCI_DMA_TODEVICE);
1253 if (pci_dma_mapping_error(pdev, temp_dma)) {
1254 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1255 goto drop_packet;
1256 }
1257
1258 buffrag++;
1259 buffrag->dma = temp_dma;
1260 buffrag->length = temp_len;
1261
1262 switch (k) {
1263 case 0:
1264 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1265 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1266 break;
1267 case 1:
1268 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1269 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1270 break;
1271 case 2:
1272 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1273 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1274 break;
1275 case 3:
1276 hwdesc->buffer4_length = cpu_to_le16(temp_len);
1277 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1278 break;
1279 }
1280 frag++;
1281 }
1282 producer = get_next_index(producer, num_txd);
1283
1284 /* For LSO, we need to copy the MAC/IP/TCP headers into
1285 * the descriptor ring
1286 */
1287 if (is_tso) {
1288 int hdr_len, first_hdr_len, more_hdr;
1289 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1290 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1291 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1292 more_hdr = 1;
1293 } else {
1294 first_hdr_len = hdr_len;
1295 more_hdr = 0;
1296 }
1297 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1298 hwdesc = &hw->cmd_desc_head[producer];
1299 pbuf = &adapter->cmd_buf_arr[producer];
1300 pbuf->skb = NULL;
1301
1302 /* copy the first 64 bytes */
1303 memcpy(((void *)hwdesc) + 2,
1304 (void *)(skb->data), first_hdr_len);
1305 producer = get_next_index(producer, num_txd);
1306
1307 if (more_hdr) {
1308 hwdesc = &hw->cmd_desc_head[producer];
1309 pbuf = &adapter->cmd_buf_arr[producer];
1310 pbuf->skb = NULL;
1311 /* copy the next 64 bytes - should be enough except
1312 * for pathological case
1313 */
1314 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1315 hwdesc,
1316 (hdr_len -
1317 first_hdr_len));
1318 producer = get_next_index(producer, num_txd);
1319 }
1320 }
1321
1322 adapter->cmd_producer = producer;
1323 adapter->stats.txbytes += skb->len;
1324
1325 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
1326
1327 adapter->stats.xmitcalled++;
1328 netdev->trans_start = jiffies;
1329
1330 return NETDEV_TX_OK;
1331
1332 drop_packet:
1333 adapter->stats.txdropped++;
1334 dev_kfree_skb_any(skb);
1335 return NETDEV_TX_OK;
1336 }
1337
1338 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1339 {
1340 struct net_device *netdev = adapter->netdev;
1341 uint32_t temp, temp_state, temp_val;
1342 int rv = 0;
1343
1344 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1345
1346 temp_state = nx_get_temp_state(temp);
1347 temp_val = nx_get_temp_val(temp);
1348
1349 if (temp_state == NX_TEMP_PANIC) {
1350 printk(KERN_ALERT
1351 "%s: Device temperature %d degrees C exceeds"
1352 " maximum allowed. Hardware has been shut down.\n",
1353 netxen_nic_driver_name, temp_val);
1354
1355 netif_carrier_off(netdev);
1356 netif_stop_queue(netdev);
1357 rv = 1;
1358 } else if (temp_state == NX_TEMP_WARN) {
1359 if (adapter->temp == NX_TEMP_NORMAL) {
1360 printk(KERN_ALERT
1361 "%s: Device temperature %d degrees C "
1362 "exceeds operating range."
1363 " Immediate action needed.\n",
1364 netxen_nic_driver_name, temp_val);
1365 }
1366 } else {
1367 if (adapter->temp == NX_TEMP_WARN) {
1368 printk(KERN_INFO
1369 "%s: Device temperature is now %d degrees C"
1370 " in normal range.\n", netxen_nic_driver_name,
1371 temp_val);
1372 }
1373 }
1374 adapter->temp = temp_state;
1375 return rv;
1376 }
1377
1378 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1379 {
1380 struct net_device *netdev = adapter->netdev;
1381 u32 val, port, linkup;
1382
1383 port = adapter->physical_port;
1384
1385 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1386 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1387 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1388 linkup = (val == XG_LINK_UP_P3);
1389 } else {
1390 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1391 if (adapter->ahw.board_type == NETXEN_NIC_GBE)
1392 linkup = (val >> port) & 1;
1393 else {
1394 val = (val >> port*8) & 0xff;
1395 linkup = (val == XG_LINK_UP);
1396 }
1397 }
1398
1399 if (adapter->ahw.linkup && !linkup) {
1400 printk(KERN_INFO "%s: %s NIC Link is down\n",
1401 netxen_nic_driver_name, netdev->name);
1402 adapter->ahw.linkup = 0;
1403 if (netif_running(netdev)) {
1404 netif_carrier_off(netdev);
1405 netif_stop_queue(netdev);
1406 }
1407
1408 netxen_nic_set_link_parameters(adapter);
1409 } else if (!adapter->ahw.linkup && linkup) {
1410 printk(KERN_INFO "%s: %s NIC Link is up\n",
1411 netxen_nic_driver_name, netdev->name);
1412 adapter->ahw.linkup = 1;
1413 if (netif_running(netdev)) {
1414 netif_carrier_on(netdev);
1415 netif_wake_queue(netdev);
1416 }
1417
1418 netxen_nic_set_link_parameters(adapter);
1419 }
1420 }
1421
1422 static void netxen_watchdog(unsigned long v)
1423 {
1424 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1425
1426 SCHEDULE_WORK(&adapter->watchdog_task);
1427 }
1428
1429 void netxen_watchdog_task(struct work_struct *work)
1430 {
1431 struct netxen_adapter *adapter =
1432 container_of(work, struct netxen_adapter, watchdog_task);
1433
1434 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1435 return;
1436
1437 netxen_nic_handle_phy_intr(adapter);
1438
1439 if (netif_running(adapter->netdev))
1440 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1441 }
1442
1443 static void netxen_tx_timeout(struct net_device *netdev)
1444 {
1445 struct netxen_adapter *adapter = (struct netxen_adapter *)
1446 netdev_priv(netdev);
1447 SCHEDULE_WORK(&adapter->tx_timeout_task);
1448 }
1449
1450 static void netxen_tx_timeout_task(struct work_struct *work)
1451 {
1452 struct netxen_adapter *adapter =
1453 container_of(work, struct netxen_adapter, tx_timeout_task);
1454
1455 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1456 netxen_nic_driver_name, adapter->netdev->name);
1457
1458 netxen_nic_disable_int(adapter);
1459 napi_disable(&adapter->napi);
1460
1461 adapter->netdev->trans_start = jiffies;
1462
1463 napi_enable(&adapter->napi);
1464 netxen_nic_enable_int(adapter);
1465 netif_wake_queue(adapter->netdev);
1466 }
1467
1468 /*
1469 * netxen_nic_get_stats - Get System Network Statistics
1470 * @netdev: network interface device structure
1471 */
1472 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1473 {
1474 struct netxen_adapter *adapter = netdev_priv(netdev);
1475 struct net_device_stats *stats = &adapter->net_stats;
1476
1477 memset(stats, 0, sizeof(*stats));
1478
1479 /* total packets received */
1480 stats->rx_packets = adapter->stats.no_rcv;
1481 /* total packets transmitted */
1482 stats->tx_packets = adapter->stats.xmitedframes +
1483 adapter->stats.xmitfinished;
1484 /* total bytes received */
1485 stats->rx_bytes = adapter->stats.rxbytes;
1486 /* total bytes transmitted */
1487 stats->tx_bytes = adapter->stats.txbytes;
1488 /* bad packets received */
1489 stats->rx_errors = adapter->stats.rcvdbadskb;
1490 /* packet transmit problems */
1491 stats->tx_errors = adapter->stats.nocmddescriptor;
1492 /* no space in linux buffers */
1493 stats->rx_dropped = adapter->stats.rxdropped;
1494 /* no space available in linux */
1495 stats->tx_dropped = adapter->stats.txdropped;
1496
1497 return stats;
1498 }
1499
1500 static irqreturn_t netxen_intr(int irq, void *data)
1501 {
1502 struct netxen_adapter *adapter = data;
1503 u32 status = 0;
1504
1505 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1506
1507 if (!(status & adapter->legacy_intr.int_vec_bit))
1508 return IRQ_NONE;
1509
1510 if (adapter->ahw.revision_id >= NX_P3_B1) {
1511 /* check interrupt state machine, to be sure */
1512 status = adapter->pci_read_immediate(adapter,
1513 ISR_INT_STATE_REG);
1514 if (!ISR_LEGACY_INT_TRIGGERED(status))
1515 return IRQ_NONE;
1516
1517 } else {
1518 unsigned long our_int = 0;
1519
1520 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
1521
1522 /* not our interrupt */
1523 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1524 return IRQ_NONE;
1525
1526 /* claim interrupt */
1527 adapter->pci_write_normalize(adapter,
1528 CRB_INT_VECTOR, (our_int & 0xffffffff));
1529 }
1530
1531 /* clear interrupt */
1532 if (adapter->fw_major < 4)
1533 netxen_nic_disable_int(adapter);
1534
1535 adapter->pci_write_immediate(adapter,
1536 adapter->legacy_intr.tgt_status_reg,
1537 0xffffffff);
1538 /* read twice to ensure write is flushed */
1539 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1540 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1541
1542 napi_schedule(&adapter->napi);
1543
1544 return IRQ_HANDLED;
1545 }
1546
1547 static irqreturn_t netxen_msi_intr(int irq, void *data)
1548 {
1549 struct netxen_adapter *adapter = data;
1550
1551 /* clear interrupt */
1552 adapter->pci_write_immediate(adapter,
1553 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1554
1555 napi_schedule(&adapter->napi);
1556 return IRQ_HANDLED;
1557 }
1558
1559 static irqreturn_t netxen_msix_intr(int irq, void *data)
1560 {
1561 struct netxen_adapter *adapter = data;
1562
1563 napi_schedule(&adapter->napi);
1564 return IRQ_HANDLED;
1565 }
1566
1567 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1568 {
1569 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
1570 int tx_complete;
1571 int ctx;
1572 int work_done;
1573
1574 tx_complete = netxen_process_cmd_ring(adapter);
1575
1576 work_done = 0;
1577 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1578 /*
1579 * Fairness issue. This will give undue weight to the
1580 * receive context 0.
1581 */
1582
1583 /*
1584 * To avoid starvation, we give each of our receivers,
1585 * a fraction of the quota. Sometimes, it might happen that we
1586 * have enough quota to process every packet, but since all the
1587 * packets are on one context, it gets only half of the quota,
1588 * and ends up not processing it.
1589 */
1590 work_done += netxen_process_rcv_ring(adapter, ctx,
1591 budget / MAX_RCV_CTX);
1592 }
1593
1594 if ((work_done < budget) && tx_complete) {
1595 netif_rx_complete(&adapter->napi);
1596 netxen_nic_enable_int(adapter);
1597 }
1598
1599 return work_done;
1600 }
1601
1602 #ifdef CONFIG_NET_POLL_CONTROLLER
1603 static void netxen_nic_poll_controller(struct net_device *netdev)
1604 {
1605 struct netxen_adapter *adapter = netdev_priv(netdev);
1606 disable_irq(adapter->irq);
1607 netxen_intr(adapter->irq, adapter);
1608 enable_irq(adapter->irq);
1609 }
1610 #endif
1611
1612 static struct pci_driver netxen_driver = {
1613 .name = netxen_nic_driver_name,
1614 .id_table = netxen_pci_tbl,
1615 .probe = netxen_nic_probe,
1616 .remove = __devexit_p(netxen_nic_remove)
1617 };
1618
1619 /* Driver Registration on NetXen card */
1620
1621 static int __init netxen_init_module(void)
1622 {
1623 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1624 return -ENOMEM;
1625
1626 return pci_register_driver(&netxen_driver);
1627 }
1628
1629 module_init(netxen_init_module);
1630
1631 static void __exit netxen_exit_module(void)
1632 {
1633 pci_unregister_driver(&netxen_driver);
1634 destroy_workqueue(netxen_workq);
1635 }
1636
1637 module_exit(netxen_exit_module);
Support for the Chinese Samsung S3C2440 based development boards