2 * Copyright (C) 2003 - 2006 NetXen, Inc.
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.
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.
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,
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
23 * Contact Information:
26 * 3965 Freedom Circle, Fourth floor,
27 * Santa Clara, CA 95054
30 * Main source file for NetXen NIC Driver on Linux
34 #include <linux/vmalloc.h>
35 #include <linux/highmem.h>
36 #include "netxen_nic_hw.h"
38 #include "netxen_nic.h"
39 #include "netxen_nic_phan_reg.h"
41 #include <linux/dma-mapping.h>
44 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
48 char netxen_nic_driver_name[] = "netxen_nic";
49 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
50 NETXEN_NIC_LINUX_VERSIONID;
52 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
54 /* Default to restricted 1G auto-neg mode */
55 static int wol_port_mode = 5;
57 static int use_msi = 1;
59 static int use_msi_x = 1;
61 #define NETXEN_NETDEV_WEIGHT 120
62 #define NETXEN_ADAPTER_UP_MAGIC 777
63 #define NETXEN_NIC_PEG_TUNE 0
65 /* Local functions to NetXen NIC driver */
66 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
67 const struct pci_device_id *ent);
68 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
69 static int netxen_nic_open(struct net_device *netdev);
70 static int netxen_nic_close(struct net_device *netdev);
71 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
72 static void netxen_tx_timeout(struct net_device *netdev);
73 static void netxen_tx_timeout_task(struct work_struct *work);
74 static void netxen_watchdog(unsigned long);
75 static int netxen_nic_poll(struct napi_struct *napi, int budget);
76 #ifdef CONFIG_NET_POLL_CONTROLLER
77 static void netxen_nic_poll_controller(struct net_device *netdev);
79 static irqreturn_t netxen_intr(int irq, void *data);
80 static irqreturn_t netxen_msi_intr(int irq, void *data);
82 /* PCI Device ID Table */
83 #define ENTRY(device) \
84 {PCI_DEVICE(0x4040, (device)), \
85 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
87 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
99 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
102 * In netxen_nic_down(), we must wait for any pending callback requests into
103 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
104 * reenabled right after it is deleted in netxen_nic_down().
105 * FLUSH_SCHEDULED_WORK() does this synchronization.
107 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
108 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
109 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
110 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
111 * linkwatch_event() to be executed which also attempts to acquire the rtnl
112 * lock thus causing a deadlock.
115 static struct workqueue_struct *netxen_workq;
116 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
117 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
119 static void netxen_watchdog(unsigned long);
121 static uint32_t crb_cmd_producer[4] = {
122 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
123 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
127 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
128 uint32_t crb_producer)
130 adapter->pci_write_normalize(adapter,
131 adapter->crb_addr_cmd_producer, crb_producer);
134 static uint32_t crb_cmd_consumer[4] = {
135 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
136 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
140 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
143 adapter->pci_write_normalize(adapter,
144 adapter->crb_addr_cmd_consumer, crb_consumer);
147 static uint32_t msi_tgt_status[8] = {
148 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
149 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
150 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
151 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
154 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
156 static void netxen_nic_disable_int(struct netxen_adapter *adapter)
160 int pci_fn = adapter->ahw.pci_func;
162 if (adapter->msi_mode != MSI_MODE_MULTIFUNC)
163 adapter->pci_write_normalize(adapter,
164 adapter->crb_intr_mask, 0);
166 if (adapter->intr_scheme != -1 &&
167 adapter->intr_scheme != INTR_SCHEME_PERPORT)
168 adapter->pci_write_immediate(adapter, ISR_INT_MASK, mask);
170 if (!NETXEN_IS_MSI_FAMILY(adapter)) {
172 adapter->pci_write_immediate(adapter,
173 ISR_INT_TARGET_STATUS, 0xffffffff);
174 mask = adapter->pci_read_immediate(adapter,
182 printk(KERN_NOTICE "%s: Failed to disable interrupt completely\n",
183 netxen_nic_driver_name);
186 if (adapter->msi_mode == MSI_MODE_MULTIFUNC) {
187 adapter->pci_write_immediate(adapter,
188 msi_tgt_status[pci_fn], 0xffffffff);
193 static void netxen_nic_enable_int(struct netxen_adapter *adapter)
197 DPRINTK(1, INFO, "Entered ISR Enable \n");
199 if (adapter->intr_scheme != -1 &&
200 adapter->intr_scheme != INTR_SCHEME_PERPORT) {
201 switch (adapter->ahw.board_type) {
205 case NETXEN_NIC_XGBE:
213 adapter->pci_write_immediate(adapter, ISR_INT_MASK, mask);
216 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1);
218 if (!NETXEN_IS_MSI_FAMILY(adapter)) {
220 if (adapter->intr_scheme != -1 &&
221 adapter->intr_scheme != INTR_SCHEME_PERPORT) {
222 adapter->pci_write_normalize(adapter,
225 adapter->pci_write_immediate(adapter,
226 ISR_INT_TARGET_MASK, mask);
229 DPRINTK(1, INFO, "Done with enable Int\n");
232 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
234 struct pci_dev *pdev = adapter->pdev;
239 adapter->dma_mask = DMA_32BIT_MASK;
241 if (revision_id >= NX_P3_B0) {
242 /* should go to DMA_64BIT_MASK */
243 adapter->dma_mask = DMA_39BIT_MASK;
244 mask = DMA_39BIT_MASK;
245 } else if (revision_id == NX_P3_A2) {
246 adapter->dma_mask = DMA_39BIT_MASK;
247 mask = DMA_39BIT_MASK;
248 } else if (revision_id == NX_P2_C1) {
249 adapter->dma_mask = DMA_35BIT_MASK;
250 mask = DMA_35BIT_MASK;
252 adapter->dma_mask = DMA_32BIT_MASK;
253 mask = DMA_32BIT_MASK;
254 goto set_32_bit_mask;
258 * Consistent DMA mask is set to 32 bit because it cannot be set to
259 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
260 * come off this pool.
262 if (pci_set_dma_mask(pdev, mask) == 0 &&
263 pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) == 0) {
264 adapter->pci_using_dac = 1;
267 #endif /* CONFIG_IA64 */
270 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
272 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
274 DPRINTK(ERR, "No usable DMA configuration, aborting:%d\n", err);
278 adapter->pci_using_dac = 0;
282 static void netxen_check_options(struct netxen_adapter *adapter)
284 switch (adapter->ahw.boardcfg.board_type) {
285 case NETXEN_BRDTYPE_P3_HMEZ:
286 case NETXEN_BRDTYPE_P3_XG_LOM:
287 case NETXEN_BRDTYPE_P3_10G_CX4:
288 case NETXEN_BRDTYPE_P3_10G_CX4_LP:
289 case NETXEN_BRDTYPE_P3_IMEZ:
290 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS:
291 case NETXEN_BRDTYPE_P3_10G_XFP:
292 case NETXEN_BRDTYPE_P3_10000_BASE_T:
293 adapter->msix_supported = !!use_msi_x;
294 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
297 case NETXEN_BRDTYPE_P2_SB31_10G:
298 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
299 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
300 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
301 adapter->msix_supported = 0;
302 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
305 case NETXEN_BRDTYPE_P3_REF_QG:
306 case NETXEN_BRDTYPE_P3_4_GB:
307 case NETXEN_BRDTYPE_P3_4_GB_MM:
308 case NETXEN_BRDTYPE_P2_SB35_4G:
309 case NETXEN_BRDTYPE_P2_SB31_2G:
310 adapter->msix_supported = 0;
311 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
315 adapter->msix_supported = 0;
316 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
318 printk(KERN_WARNING "Unknown board type(0x%x)\n",
319 adapter->ahw.boardcfg.board_type);
323 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
324 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
325 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
327 adapter->max_possible_rss_rings = 1;
332 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
336 if (first_boot == 0x55555555) {
337 /* This is the first boot after power up */
339 /* PCI bus master workaround */
340 adapter->hw_read_wx(adapter,
341 NETXEN_PCIE_REG(0x4), &first_boot, 4);
342 if (!(first_boot & 0x4)) {
344 adapter->hw_write_wx(adapter,
345 NETXEN_PCIE_REG(0x4), &first_boot, 4);
346 adapter->hw_read_wx(adapter,
347 NETXEN_PCIE_REG(0x4), &first_boot, 4);
350 /* This is the first boot after power up */
351 adapter->hw_read_wx(adapter,
352 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
353 if (first_boot != 0x80000f) {
354 /* clear the register for future unloads/loads */
355 adapter->pci_write_normalize(adapter,
356 NETXEN_CAM_RAM(0x1fc), 0);
360 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
361 /* Start P2 boot loader */
362 adapter->pci_write_normalize(adapter,
363 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
364 adapter->pci_write_normalize(adapter,
365 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
371 static void netxen_set_port_mode(struct netxen_adapter *adapter)
375 val = adapter->ahw.boardcfg.board_type;
376 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
377 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
378 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
379 data = NETXEN_PORT_MODE_802_3_AP;
380 adapter->hw_write_wx(adapter,
381 NETXEN_PORT_MODE_ADDR, &data, 4);
382 } else if (port_mode == NETXEN_PORT_MODE_XG) {
383 data = NETXEN_PORT_MODE_XG;
384 adapter->hw_write_wx(adapter,
385 NETXEN_PORT_MODE_ADDR, &data, 4);
386 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
387 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
388 adapter->hw_write_wx(adapter,
389 NETXEN_PORT_MODE_ADDR, &data, 4);
390 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
391 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
392 adapter->hw_write_wx(adapter,
393 NETXEN_PORT_MODE_ADDR, &data, 4);
395 data = NETXEN_PORT_MODE_AUTO_NEG;
396 adapter->hw_write_wx(adapter,
397 NETXEN_PORT_MODE_ADDR, &data, 4);
400 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
401 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
402 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
403 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
404 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
406 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
411 #define PCI_CAP_ID_GEN 0x10
413 static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
420 struct pci_dev *pdev;
422 pdev = pci_get_device(0x1166, 0x0140, NULL);
425 adapter->hw_read_wx(adapter,
426 NETXEN_PCIE_REG(PCIE_TGT_SPLIT_CHICKEN), &chicken, 4);
428 adapter->hw_write_wx(adapter,
429 NETXEN_PCIE_REG(PCIE_TGT_SPLIT_CHICKEN), &chicken, 4);
432 pdev = adapter->pdev;
434 adapter->hw_read_wx(adapter,
435 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
436 /* clear chicken3.25:24 */
437 chicken &= 0xFCFFFFFF;
439 * if gen1 and B0, set F1020 - if gen 2, do nothing
440 * if gen2 set to F1000
442 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
444 pci_read_config_dword(pdev, pos + 0x10, &control);
445 if ((control & 0x000F0000) != 0x00020000) {
446 /* set chicken3.24 if gen1 */
447 chicken |= 0x01000000;
449 printk(KERN_INFO "%s Gen2 strapping detected\n",
450 netxen_nic_driver_name);
453 /* set chicken3.24 if gen1 */
454 chicken |= 0x01000000;
455 printk(KERN_INFO "%s Gen1 strapping detected\n",
456 netxen_nic_driver_name);
457 if (adapter->ahw.revision_id == NX_P3_B0)
463 adapter->hw_write_wx(adapter,
464 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
469 pdevfuncsave = pdev->devfn;
470 if (pdevfuncsave & 0x07)
473 for (i = 0; i < 8; i++) {
474 pci_read_config_dword(pdev, pos + 8, &control);
475 pci_read_config_dword(pdev, pos + 8, &control);
476 pci_write_config_dword(pdev, pos + 8, c8c9value);
479 pdev->devfn = pdevfuncsave;
482 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
487 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
489 pci_read_config_dword(pdev, pos, &control);
491 control |= PCI_MSIX_FLAGS_ENABLE;
494 pci_write_config_dword(pdev, pos, control);
498 static void netxen_init_msix_entries(struct netxen_adapter *adapter)
502 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
503 adapter->msix_entries[i].entry = i;
509 * The Linux system will invoke this after identifying the vendor ID and
510 * device Id in the pci_tbl supported by this module.
512 * A quad port card has one operational PCI config space, (function 0),
513 * which is used to access all four ports.
515 * This routine will initialize the adapter, and setup the global parameters
516 * along with the port's specific structure.
519 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
521 struct net_device *netdev = NULL;
522 struct netxen_adapter *adapter = NULL;
523 void __iomem *mem_ptr0 = NULL;
524 void __iomem *mem_ptr1 = NULL;
525 void __iomem *mem_ptr2 = NULL;
526 unsigned long first_page_group_end;
527 unsigned long first_page_group_start;
530 u8 __iomem *db_ptr = NULL;
531 unsigned long mem_base, mem_len, db_base, db_len, pci_len0 = 0;
533 int first_driver, first_boot;
534 __le64 mac_addr[FLASH_NUM_PORTS + 1];
536 int pci_func_id = PCI_FUNC(pdev->devfn);
537 DECLARE_MAC_BUF(mac);
538 struct netxen_legacy_intr_set *legacy_intrp;
541 if (pci_func_id == 0)
542 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
544 if (pdev->class != 0x020000) {
545 printk(KERN_DEBUG "NetXen function %d, class %x will not "
546 "be enabled.\n",pci_func_id, pdev->class);
550 if ((err = pci_enable_device(pdev)))
553 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
555 goto err_out_disable_pdev;
558 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
559 goto err_out_disable_pdev;
561 pci_set_master(pdev);
563 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
565 printk(KERN_ERR"%s: Failed to allocate memory for the "
566 "device block.Check system memory resource"
567 " usage.\n", netxen_nic_driver_name);
568 goto err_out_free_res;
571 SET_NETDEV_DEV(netdev, &pdev->dev);
573 adapter = netdev->priv;
574 adapter->netdev = netdev;
575 adapter->pdev = pdev;
576 adapter->ahw.pci_func = pci_func_id;
578 revision_id = pdev->revision;
579 adapter->ahw.revision_id = revision_id;
581 err = nx_set_dma_mask(adapter, revision_id);
583 goto err_out_free_netdev;
585 rwlock_init(&adapter->adapter_lock);
586 adapter->ahw.qdr_sn_window = -1;
587 adapter->ahw.ddr_mn_window = -1;
589 /* remap phys address */
590 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
591 mem_len = pci_resource_len(pdev, 0);
594 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
595 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
596 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
597 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
598 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
599 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
600 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
601 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
602 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
604 /* 128 Meg of memory */
605 if (mem_len == NETXEN_PCI_128MB_SIZE) {
606 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
607 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
608 SECOND_PAGE_GROUP_SIZE);
609 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
610 THIRD_PAGE_GROUP_SIZE);
611 first_page_group_start = FIRST_PAGE_GROUP_START;
612 first_page_group_end = FIRST_PAGE_GROUP_END;
613 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
614 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
615 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
616 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
617 first_page_group_start = 0;
618 first_page_group_end = 0;
619 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
620 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
621 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
622 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
623 adapter->pci_write_immediate =
624 netxen_nic_pci_write_immediate_2M;
625 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
626 adapter->pci_write_normalize =
627 netxen_nic_pci_write_normalize_2M;
628 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
629 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
630 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
632 mem_ptr0 = ioremap(mem_base, mem_len);
634 first_page_group_start = 0;
635 first_page_group_end = 0;
637 adapter->ahw.ddr_mn_window = 0;
638 adapter->ahw.qdr_sn_window = 0;
640 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
641 (pci_func_id * 0x20);
642 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
644 adapter->ahw.ms_win_crb += (pci_func_id * 0x20);
646 adapter->ahw.ms_win_crb +=
647 0xA0 + ((pci_func_id - 4) * 0x10);
650 goto err_out_free_netdev;
653 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
655 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
656 db_len = pci_resource_len(pdev, 4);
659 printk(KERN_ERR "%s: doorbell is disabled\n",
660 netxen_nic_driver_name);
662 goto err_out_iounmap;
664 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
667 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
669 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
670 netxen_nic_driver_name);
672 goto err_out_iounmap;
674 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
676 adapter->ahw.pci_base0 = mem_ptr0;
677 adapter->ahw.pci_len0 = pci_len0;
678 adapter->ahw.first_page_group_start = first_page_group_start;
679 adapter->ahw.first_page_group_end = first_page_group_end;
680 adapter->ahw.pci_base1 = mem_ptr1;
681 adapter->ahw.pci_base2 = mem_ptr2;
682 adapter->ahw.db_base = db_ptr;
683 adapter->ahw.db_len = db_len;
685 netif_napi_add(netdev, &adapter->napi,
686 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
688 if (revision_id >= NX_P3_B0)
689 legacy_intrp = &legacy_intr[pci_func_id];
691 legacy_intrp = &legacy_intr[0];
693 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
694 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
695 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
696 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
698 /* this will be read from FW later */
699 adapter->intr_scheme = -1;
700 adapter->msi_mode = -1;
702 /* This will be reset for mezz cards */
703 adapter->portnum = pci_func_id;
704 adapter->status &= ~NETXEN_NETDEV_STATUS;
705 adapter->rx_csum = 1;
706 adapter->mc_enabled = 0;
707 if (NX_IS_REVISION_P3(revision_id)) {
708 adapter->max_mc_count = 38;
709 adapter->max_rds_rings = 2;
711 adapter->max_mc_count = 16;
712 adapter->max_rds_rings = 3;
715 netdev->open = netxen_nic_open;
716 netdev->stop = netxen_nic_close;
717 netdev->hard_start_xmit = netxen_nic_xmit_frame;
718 netdev->get_stats = netxen_nic_get_stats;
719 netdev->set_multicast_list = netxen_nic_set_multi;
720 netdev->set_mac_address = netxen_nic_set_mac;
721 netdev->change_mtu = netxen_nic_change_mtu;
722 netdev->tx_timeout = netxen_tx_timeout;
723 netdev->watchdog_timeo = 2*HZ;
725 netxen_nic_change_mtu(netdev, netdev->mtu);
727 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
728 #ifdef CONFIG_NET_POLL_CONTROLLER
729 netdev->poll_controller = netxen_nic_poll_controller;
731 /* ScatterGather support */
732 netdev->features = NETIF_F_SG;
733 netdev->features |= NETIF_F_IP_CSUM;
734 netdev->features |= NETIF_F_TSO;
735 if (NX_IS_REVISION_P3(revision_id))
736 netdev->features |= NETIF_F_TSO6;
738 if (adapter->pci_using_dac)
739 netdev->features |= NETIF_F_HIGHDMA;
742 * Set the CRB window to invalid. If any register in window 0 is
743 * accessed it should set the window to 0 and then reset it to 1.
745 adapter->curr_window = 255;
747 if (netxen_nic_get_board_info(adapter) != 0) {
748 printk("%s: Error getting board config info.\n",
749 netxen_nic_driver_name);
751 goto err_out_iounmap;
754 netxen_initialize_adapter_ops(adapter);
756 /* Mezz cards have PCI function 0,2,3 enabled */
757 switch (adapter->ahw.boardcfg.board_type) {
758 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
759 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
760 if (pci_func_id >= 2)
761 adapter->portnum = pci_func_id - 2;
768 * This call will setup various max rx/tx counts.
769 * It must be done before any buffer/ring allocations.
771 netxen_check_options(adapter);
774 if (NX_IS_REVISION_P3(revision_id)) {
775 if (adapter->ahw.pci_func == 0)
778 if (adapter->portnum == 0)
781 adapter->crb_addr_cmd_producer = crb_cmd_producer[adapter->portnum];
782 adapter->crb_addr_cmd_consumer = crb_cmd_consumer[adapter->portnum];
783 netxen_nic_update_cmd_producer(adapter, 0);
784 netxen_nic_update_cmd_consumer(adapter, 0);
787 first_boot = adapter->pci_read_normalize(adapter,
788 NETXEN_CAM_RAM(0x1fc));
790 err = netxen_check_hw_init(adapter, first_boot);
792 printk(KERN_ERR "%s: error in init HW init sequence\n",
793 netxen_nic_driver_name);
794 goto err_out_iounmap;
797 if (NX_IS_REVISION_P3(revision_id))
798 netxen_set_port_mode(adapter);
800 if (first_boot != 0x55555555) {
801 adapter->pci_write_normalize(adapter,
802 CRB_CMDPEG_STATE, 0);
803 netxen_pinit_from_rom(adapter, 0);
805 netxen_load_firmware(adapter);
808 if (NX_IS_REVISION_P3(revision_id))
809 netxen_pcie_strap_init(adapter);
811 if (NX_IS_REVISION_P2(revision_id)) {
813 /* Initialize multicast addr pool owners */
815 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
817 netxen_crb_writelit_adapter(adapter,
818 NETXEN_MAC_ADDR_CNTL_REG, val);
822 if ((first_boot == 0x55555555) &&
823 (NX_IS_REVISION_P2(revision_id))) {
824 /* Unlock the HW, prompting the boot sequence */
825 adapter->pci_write_normalize(adapter,
826 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
829 err = netxen_initialize_adapter_offload(adapter);
831 goto err_out_iounmap;
834 * Tell the hardware our version number.
836 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
837 | ((_NETXEN_NIC_LINUX_MINOR << 8))
838 | (_NETXEN_NIC_LINUX_SUBVERSION);
839 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i);
841 /* Handshake with the card before we register the devices. */
842 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
844 if (NX_IS_REVISION_P3(revision_id)) {
845 adapter->hw_read_wx(adapter,
846 NETXEN_MIU_MN_CONTROL, &val, 4);
847 adapter->ahw.cut_through = (val & 0x4) ? 1 : 0;
848 dev_info(&pdev->dev, "firmware running in %s mode\n",
849 adapter->ahw.cut_through ? "cut through" : "legacy");
853 netxen_nic_flash_print(adapter);
856 * See if the firmware gave us a virtual-physical port mapping.
858 adapter->physical_port = adapter->portnum;
859 i = adapter->pci_read_normalize(adapter, CRB_V2P(adapter->portnum));
861 adapter->physical_port = i;
863 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
865 netxen_set_msix_bit(pdev, 0);
867 if (NX_IS_REVISION_P3(revision_id)) {
868 if ((mem_len != NETXEN_PCI_128MB_SIZE) &&
869 mem_len != NETXEN_PCI_2MB_SIZE)
870 adapter->msix_supported = 0;
873 if (adapter->msix_supported) {
875 netxen_init_msix_entries(adapter);
877 if (pci_enable_msix(pdev, adapter->msix_entries,
878 MSIX_ENTRIES_PER_ADAPTER))
881 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
882 netxen_set_msix_bit(pdev, 1);
883 dev_info(&pdev->dev, "using msi-x interrupts\n");
887 if (use_msi && !pci_enable_msi(pdev)) {
888 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
889 dev_info(&pdev->dev, "using msi interrupts\n");
891 dev_info(&pdev->dev, "using legacy interrupts\n");
894 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
895 netdev->irq = adapter->msix_entries[0].vector;
897 netdev->irq = pdev->irq;
899 err = netxen_receive_peg_ready(adapter);
901 goto err_out_disable_msi;
903 init_timer(&adapter->watchdog_timer);
904 adapter->ahw.linkup = 0;
905 adapter->watchdog_timer.function = &netxen_watchdog;
906 adapter->watchdog_timer.data = (unsigned long)adapter;
907 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
908 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
910 if (netxen_is_flash_supported(adapter) == 0 &&
911 netxen_get_flash_mac_addr(adapter, mac_addr) == 0) {
914 p = (unsigned char *)&mac_addr[adapter->portnum];
915 netdev->dev_addr[0] = *(p + 5);
916 netdev->dev_addr[1] = *(p + 4);
917 netdev->dev_addr[2] = *(p + 3);
918 netdev->dev_addr[3] = *(p + 2);
919 netdev->dev_addr[4] = *(p + 1);
920 netdev->dev_addr[5] = *(p + 0);
922 memcpy(netdev->perm_addr, netdev->dev_addr,
924 if (!is_valid_ether_addr(netdev->perm_addr)) {
925 printk(KERN_ERR "%s: Bad MAC address %s.\n",
926 netxen_nic_driver_name,
927 print_mac(mac, netdev->dev_addr));
929 adapter->macaddr_set(adapter, netdev->dev_addr);
933 netif_carrier_off(netdev);
934 netif_stop_queue(netdev);
936 if ((err = register_netdev(netdev))) {
937 printk(KERN_ERR "%s: register_netdev failed port #%d"
938 " aborting\n", netxen_nic_driver_name,
941 goto err_out_disable_msi;
944 pci_set_drvdata(pdev, adapter);
946 switch (adapter->ahw.board_type) {
948 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
949 adapter->netdev->name);
951 case NETXEN_NIC_XGBE:
952 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
953 adapter->netdev->name);
960 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
961 pci_disable_msix(pdev);
962 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
963 pci_disable_msi(pdev);
966 netxen_free_adapter_offload(adapter);
983 pci_release_regions(pdev);
985 err_out_disable_pdev:
986 pci_set_drvdata(pdev, NULL);
987 pci_disable_device(pdev);
991 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
993 struct netxen_adapter *adapter;
994 struct net_device *netdev;
996 adapter = pci_get_drvdata(pdev);
1000 netdev = adapter->netdev;
1002 unregister_netdev(netdev);
1004 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1005 netxen_free_hw_resources(adapter);
1006 netxen_free_sw_resources(adapter);
1009 if (adapter->portnum == 0)
1010 netxen_free_adapter_offload(adapter);
1013 free_irq(adapter->irq, adapter);
1015 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1016 pci_disable_msix(pdev);
1017 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1018 pci_disable_msi(pdev);
1020 iounmap(adapter->ahw.db_base);
1021 iounmap(adapter->ahw.pci_base0);
1022 iounmap(adapter->ahw.pci_base1);
1023 iounmap(adapter->ahw.pci_base2);
1025 pci_release_regions(pdev);
1026 pci_disable_device(pdev);
1027 pci_set_drvdata(pdev, NULL);
1029 free_netdev(netdev);
1033 * Called when a network interface is made active
1034 * @returns 0 on success, negative value on failure
1036 static int netxen_nic_open(struct net_device *netdev)
1038 struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv;
1041 irq_handler_t handler;
1042 unsigned long flags = IRQF_SAMPLE_RANDOM;
1044 if (adapter->driver_mismatch)
1047 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1048 err = netxen_init_firmware(adapter);
1050 printk(KERN_ERR "Failed to init firmware\n");
1054 err = netxen_alloc_sw_resources(adapter);
1056 printk(KERN_ERR "%s: Error in setting sw resources\n",
1061 netxen_nic_clear_stats(adapter);
1063 err = netxen_alloc_hw_resources(adapter);
1065 printk(KERN_ERR "%s: Error in setting hw resources\n",
1067 goto err_out_free_sw;
1070 if (adapter->fw_major < 4) {
1071 adapter->crb_addr_cmd_producer =
1072 crb_cmd_producer[adapter->portnum];
1073 adapter->crb_addr_cmd_consumer =
1074 crb_cmd_consumer[adapter->portnum];
1077 netxen_nic_update_cmd_producer(adapter, 0);
1078 netxen_nic_update_cmd_consumer(adapter, 0);
1080 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1081 for (ring = 0; ring < adapter->max_rds_rings; ring++)
1082 netxen_post_rx_buffers(adapter, ctx, ring);
1084 if (NETXEN_IS_MSI_FAMILY(adapter))
1085 handler = netxen_msi_intr;
1087 flags |= IRQF_SHARED;
1088 handler = netxen_intr;
1090 adapter->irq = netdev->irq;
1091 err = request_irq(adapter->irq, handler,
1092 flags, netdev->name, adapter);
1094 printk(KERN_ERR "request_irq failed with: %d\n", err);
1095 goto err_out_free_hw;
1098 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1101 /* Done here again so that even if phantom sw overwrote it,
1103 err = adapter->init_port(adapter, adapter->portnum);
1105 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1106 netxen_nic_driver_name, adapter->portnum);
1107 goto err_out_free_irq;
1109 adapter->macaddr_set(adapter, netdev->dev_addr);
1111 netxen_nic_set_link_parameters(adapter);
1113 netxen_nic_set_multi(netdev);
1114 adapter->set_mtu(adapter, netdev->mtu);
1116 mod_timer(&adapter->watchdog_timer, jiffies);
1118 napi_enable(&adapter->napi);
1119 netxen_nic_enable_int(adapter);
1121 netif_start_queue(netdev);
1126 free_irq(adapter->irq, adapter);
1128 netxen_free_hw_resources(adapter);
1130 netxen_free_sw_resources(adapter);
1135 * netxen_nic_close - Disables a network interface entry point
1137 static int netxen_nic_close(struct net_device *netdev)
1139 struct netxen_adapter *adapter = netdev_priv(netdev);
1141 netif_carrier_off(netdev);
1142 netif_stop_queue(netdev);
1143 napi_disable(&adapter->napi);
1145 if (adapter->stop_port)
1146 adapter->stop_port(adapter);
1148 netxen_nic_disable_int(adapter);
1150 netxen_release_tx_buffers(adapter);
1152 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1153 FLUSH_SCHEDULED_WORK();
1154 del_timer_sync(&adapter->watchdog_timer);
1160 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1162 struct netxen_adapter *adapter = netdev_priv(netdev);
1163 struct netxen_hardware_context *hw = &adapter->ahw;
1164 unsigned int first_seg_len = skb->len - skb->data_len;
1165 struct netxen_skb_frag *buffrag;
1168 u32 producer, consumer;
1169 u32 saved_producer = 0;
1170 struct cmd_desc_type0 *hwdesc;
1172 struct netxen_cmd_buffer *pbuf = NULL;
1175 u32 num_txd = adapter->max_tx_desc_count;
1177 frag_count = skb_shinfo(skb)->nr_frags + 1;
1179 /* There 4 fragments per descriptor */
1180 no_of_desc = (frag_count + 3) >> 2;
1181 if (netdev->features & NETIF_F_TSO) {
1182 if (skb_shinfo(skb)->gso_size > 0) {
1185 if ((ip_hdrlen(skb) + tcp_hdrlen(skb) +
1186 sizeof(struct ethhdr)) >
1187 (sizeof(struct cmd_desc_type0) - 2)) {
1193 producer = adapter->cmd_producer;
1195 consumer = adapter->last_cmd_consumer;
1196 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1197 netif_stop_queue(netdev);
1199 return NETDEV_TX_BUSY;
1202 /* Copy the descriptors into the hardware */
1203 saved_producer = producer;
1204 hwdesc = &hw->cmd_desc_head[producer];
1205 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1206 /* Take skb->data itself */
1207 pbuf = &adapter->cmd_buf_arr[producer];
1208 if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) {
1209 pbuf->mss = skb_shinfo(skb)->gso_size;
1210 hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1215 pbuf->total_length = skb->len;
1217 pbuf->cmd = TX_ETHER_PKT;
1218 pbuf->frag_count = frag_count;
1219 pbuf->port = adapter->portnum;
1220 buffrag = &pbuf->frag_array[0];
1221 buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
1223 buffrag->length = first_seg_len;
1224 netxen_set_cmd_desc_totallength(hwdesc, skb->len);
1225 netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count);
1226 netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT);
1228 netxen_set_cmd_desc_port(hwdesc, adapter->portnum);
1229 netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum);
1230 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1231 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1233 for (i = 1, k = 1; i < frag_count; i++, k++) {
1234 struct skb_frag_struct *frag;
1236 unsigned long offset;
1237 dma_addr_t temp_dma;
1239 /* move to next desc. if there is a need */
1240 if ((i & 0x3) == 0) {
1242 producer = get_next_index(producer, num_txd);
1243 hwdesc = &hw->cmd_desc_head[producer];
1244 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1245 pbuf = &adapter->cmd_buf_arr[producer];
1248 frag = &skb_shinfo(skb)->frags[i - 1];
1250 offset = frag->page_offset;
1253 temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
1254 len, PCI_DMA_TODEVICE);
1257 buffrag->dma = temp_dma;
1258 buffrag->length = temp_len;
1262 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1263 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1266 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1267 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1270 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1271 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1274 hwdesc->buffer4_length = cpu_to_le16(temp_len);
1275 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1280 producer = get_next_index(producer, num_txd);
1282 /* might change opcode to TX_TCP_LSO */
1283 netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb);
1285 /* For LSO, we need to copy the MAC/IP/TCP headers into
1286 * the descriptor ring
1288 if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer])
1290 int hdr_len, first_hdr_len, more_hdr;
1291 hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length;
1292 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1293 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1296 first_hdr_len = hdr_len;
1299 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1300 hwdesc = &hw->cmd_desc_head[producer];
1301 pbuf = &adapter->cmd_buf_arr[producer];
1304 /* copy the first 64 bytes */
1305 memcpy(((void *)hwdesc) + 2,
1306 (void *)(skb->data), first_hdr_len);
1307 producer = get_next_index(producer, num_txd);
1310 hwdesc = &hw->cmd_desc_head[producer];
1311 pbuf = &adapter->cmd_buf_arr[producer];
1313 /* copy the next 64 bytes - should be enough except
1314 * for pathological case
1316 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1320 producer = get_next_index(producer, num_txd);
1324 adapter->cmd_producer = producer;
1325 adapter->stats.txbytes += skb->len;
1327 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
1329 adapter->stats.xmitcalled++;
1330 netdev->trans_start = jiffies;
1332 return NETDEV_TX_OK;
1335 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1337 struct net_device *netdev = adapter->netdev;
1338 uint32_t temp, temp_state, temp_val;
1341 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1343 temp_state = nx_get_temp_state(temp);
1344 temp_val = nx_get_temp_val(temp);
1346 if (temp_state == NX_TEMP_PANIC) {
1348 "%s: Device temperature %d degrees C exceeds"
1349 " maximum allowed. Hardware has been shut down.\n",
1350 netxen_nic_driver_name, temp_val);
1352 netif_carrier_off(netdev);
1353 netif_stop_queue(netdev);
1355 } else if (temp_state == NX_TEMP_WARN) {
1356 if (adapter->temp == NX_TEMP_NORMAL) {
1358 "%s: Device temperature %d degrees C "
1359 "exceeds operating range."
1360 " Immediate action needed.\n",
1361 netxen_nic_driver_name, temp_val);
1364 if (adapter->temp == NX_TEMP_WARN) {
1366 "%s: Device temperature is now %d degrees C"
1367 " in normal range.\n", netxen_nic_driver_name,
1371 adapter->temp = temp_state;
1375 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1377 struct net_device *netdev = adapter->netdev;
1378 u32 val, port, linkup;
1380 port = adapter->physical_port;
1382 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1383 if (adapter->ahw.board_type == NETXEN_NIC_GBE)
1384 linkup = (val >> port) & 1;
1386 val = (val >> port*8) & 0xff;
1387 linkup = (val == XG_LINK_UP);
1390 if (adapter->ahw.linkup && !linkup) {
1391 printk(KERN_INFO "%s: %s NIC Link is down\n",
1392 netxen_nic_driver_name, netdev->name);
1393 adapter->ahw.linkup = 0;
1394 if (netif_running(netdev)) {
1395 netif_carrier_off(netdev);
1396 netif_stop_queue(netdev);
1398 } else if (!adapter->ahw.linkup && linkup) {
1399 printk(KERN_INFO "%s: %s NIC Link is up\n",
1400 netxen_nic_driver_name, netdev->name);
1401 adapter->ahw.linkup = 1;
1402 if (netif_running(netdev)) {
1403 netif_carrier_on(netdev);
1404 netif_wake_queue(netdev);
1409 static void netxen_watchdog(unsigned long v)
1411 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1413 SCHEDULE_WORK(&adapter->watchdog_task);
1416 void netxen_watchdog_task(struct work_struct *work)
1418 struct netxen_adapter *adapter =
1419 container_of(work, struct netxen_adapter, watchdog_task);
1421 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1424 netxen_nic_handle_phy_intr(adapter);
1426 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1429 static void netxen_tx_timeout(struct net_device *netdev)
1431 struct netxen_adapter *adapter = (struct netxen_adapter *)
1432 netdev_priv(netdev);
1433 SCHEDULE_WORK(&adapter->tx_timeout_task);
1436 static void netxen_tx_timeout_task(struct work_struct *work)
1438 struct netxen_adapter *adapter =
1439 container_of(work, struct netxen_adapter, tx_timeout_task);
1441 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1442 netxen_nic_driver_name, adapter->netdev->name);
1444 netxen_nic_disable_int(adapter);
1445 napi_disable(&adapter->napi);
1447 adapter->netdev->trans_start = jiffies;
1449 napi_enable(&adapter->napi);
1450 netxen_nic_enable_int(adapter);
1451 netif_wake_queue(adapter->netdev);
1455 * netxen_nic_get_stats - Get System Network Statistics
1456 * @netdev: network interface device structure
1458 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1460 struct netxen_adapter *adapter = netdev_priv(netdev);
1461 struct net_device_stats *stats = &adapter->net_stats;
1463 memset(stats, 0, sizeof(*stats));
1465 /* total packets received */
1466 stats->rx_packets = adapter->stats.no_rcv;
1467 /* total packets transmitted */
1468 stats->tx_packets = adapter->stats.xmitedframes +
1469 adapter->stats.xmitfinished;
1470 /* total bytes received */
1471 stats->rx_bytes = adapter->stats.rxbytes;
1472 /* total bytes transmitted */
1473 stats->tx_bytes = adapter->stats.txbytes;
1474 /* bad packets received */
1475 stats->rx_errors = adapter->stats.rcvdbadskb;
1476 /* packet transmit problems */
1477 stats->tx_errors = adapter->stats.nocmddescriptor;
1478 /* no space in linux buffers */
1479 stats->rx_dropped = adapter->stats.rxdropped;
1480 /* no space available in linux */
1481 stats->tx_dropped = adapter->stats.txdropped;
1487 netxen_handle_int(struct netxen_adapter *adapter)
1489 netxen_nic_disable_int(adapter);
1490 napi_schedule(&adapter->napi);
1493 static irqreturn_t netxen_intr(int irq, void *data)
1495 struct netxen_adapter *adapter = data;
1498 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
1499 /* not our interrupt */
1500 if ((our_int & (0x80 << adapter->portnum)) == 0)
1503 if (adapter->intr_scheme == INTR_SCHEME_PERPORT) {
1504 /* claim interrupt */
1505 adapter->pci_write_normalize(adapter, CRB_INT_VECTOR,
1506 our_int & ~((u32)(0x80 << adapter->portnum)));
1509 netxen_handle_int(adapter);
1514 static irqreturn_t netxen_msi_intr(int irq, void *data)
1516 struct netxen_adapter *adapter = data;
1518 netxen_handle_int(adapter);
1522 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1524 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
1529 tx_complete = netxen_process_cmd_ring(adapter);
1532 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1534 * Fairness issue. This will give undue weight to the
1535 * receive context 0.
1539 * To avoid starvation, we give each of our receivers,
1540 * a fraction of the quota. Sometimes, it might happen that we
1541 * have enough quota to process every packet, but since all the
1542 * packets are on one context, it gets only half of the quota,
1543 * and ends up not processing it.
1545 work_done += netxen_process_rcv_ring(adapter, ctx,
1546 budget / MAX_RCV_CTX);
1549 if ((work_done < budget) && tx_complete) {
1550 netif_rx_complete(adapter->netdev, &adapter->napi);
1551 netxen_nic_enable_int(adapter);
1557 #ifdef CONFIG_NET_POLL_CONTROLLER
1558 static void netxen_nic_poll_controller(struct net_device *netdev)
1560 struct netxen_adapter *adapter = netdev_priv(netdev);
1561 disable_irq(adapter->irq);
1562 netxen_intr(adapter->irq, adapter);
1563 enable_irq(adapter->irq);
1567 static struct pci_driver netxen_driver = {
1568 .name = netxen_nic_driver_name,
1569 .id_table = netxen_pci_tbl,
1570 .probe = netxen_nic_probe,
1571 .remove = __devexit_p(netxen_nic_remove)
1574 /* Driver Registration on NetXen card */
1576 static int __init netxen_init_module(void)
1578 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1581 return pci_register_driver(&netxen_driver);
1584 module_init(netxen_init_module);
1586 static void __exit netxen_exit_module(void)
1588 pci_unregister_driver(&netxen_driver);
1589 destroy_workqueue(netxen_workq);
1592 module_exit(netxen_exit_module);