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 /* Local functions to NetXen NIC driver */
62 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
63 const struct pci_device_id *ent);
64 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
65 static int netxen_nic_open(struct net_device *netdev);
66 static int netxen_nic_close(struct net_device *netdev);
67 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
68 static void netxen_tx_timeout(struct net_device *netdev);
69 static void netxen_tx_timeout_task(struct work_struct *work);
70 static void netxen_watchdog(unsigned long);
71 static int netxen_nic_poll(struct napi_struct *napi, int budget);
72 #ifdef CONFIG_NET_POLL_CONTROLLER
73 static void netxen_nic_poll_controller(struct net_device *netdev);
75 static irqreturn_t netxen_intr(int irq, void *data);
76 static irqreturn_t netxen_msi_intr(int irq, void *data);
78 /* PCI Device ID Table */
79 #define ENTRY(device) \
80 {PCI_DEVICE(0x4040, (device)), \
81 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
83 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
95 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
98 * In netxen_nic_down(), we must wait for any pending callback requests into
99 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
100 * reenabled right after it is deleted in netxen_nic_down().
101 * FLUSH_SCHEDULED_WORK() does this synchronization.
103 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
104 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
105 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
106 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
107 * linkwatch_event() to be executed which also attempts to acquire the rtnl
108 * lock thus causing a deadlock.
111 static struct workqueue_struct *netxen_workq;
112 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
113 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
115 static void netxen_watchdog(unsigned long);
117 static uint32_t crb_cmd_producer[4] = {
118 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
119 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
123 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
124 uint32_t crb_producer)
126 adapter->pci_write_normalize(adapter,
127 adapter->crb_addr_cmd_producer, crb_producer);
130 static uint32_t crb_cmd_consumer[4] = {
131 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
132 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
136 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
139 adapter->pci_write_normalize(adapter,
140 adapter->crb_addr_cmd_consumer, crb_consumer);
143 static uint32_t msi_tgt_status[8] = {
144 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
145 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
146 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
147 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
150 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
152 static inline void netxen_nic_disable_int(struct netxen_adapter *adapter)
154 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0);
157 static inline void netxen_nic_enable_int(struct netxen_adapter *adapter)
159 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1);
161 if (!NETXEN_IS_MSI_FAMILY(adapter))
162 adapter->pci_write_immediate(adapter,
163 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
166 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
168 struct pci_dev *pdev = adapter->pdev;
173 adapter->dma_mask = DMA_32BIT_MASK;
175 if (revision_id >= NX_P3_B0) {
176 /* should go to DMA_64BIT_MASK */
177 adapter->dma_mask = DMA_39BIT_MASK;
178 mask = DMA_39BIT_MASK;
179 } else if (revision_id == NX_P3_A2) {
180 adapter->dma_mask = DMA_39BIT_MASK;
181 mask = DMA_39BIT_MASK;
182 } else if (revision_id == NX_P2_C1) {
183 adapter->dma_mask = DMA_35BIT_MASK;
184 mask = DMA_35BIT_MASK;
186 adapter->dma_mask = DMA_32BIT_MASK;
187 mask = DMA_32BIT_MASK;
188 goto set_32_bit_mask;
192 * Consistent DMA mask is set to 32 bit because it cannot be set to
193 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
194 * come off this pool.
196 if (pci_set_dma_mask(pdev, mask) == 0 &&
197 pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) == 0) {
198 adapter->pci_using_dac = 1;
201 #endif /* CONFIG_IA64 */
204 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
206 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
208 DPRINTK(ERR, "No usable DMA configuration, aborting:%d\n", err);
212 adapter->pci_using_dac = 0;
216 static void netxen_check_options(struct netxen_adapter *adapter)
218 switch (adapter->ahw.boardcfg.board_type) {
219 case NETXEN_BRDTYPE_P3_HMEZ:
220 case NETXEN_BRDTYPE_P3_XG_LOM:
221 case NETXEN_BRDTYPE_P3_10G_CX4:
222 case NETXEN_BRDTYPE_P3_10G_CX4_LP:
223 case NETXEN_BRDTYPE_P3_IMEZ:
224 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS:
225 case NETXEN_BRDTYPE_P3_10G_SFP_QT:
226 case NETXEN_BRDTYPE_P3_10G_SFP_CT:
227 case NETXEN_BRDTYPE_P3_10G_XFP:
228 case NETXEN_BRDTYPE_P3_10000_BASE_T:
229 adapter->msix_supported = !!use_msi_x;
230 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
233 case NETXEN_BRDTYPE_P2_SB31_10G:
234 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
235 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
236 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
237 adapter->msix_supported = 0;
238 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
241 case NETXEN_BRDTYPE_P3_REF_QG:
242 case NETXEN_BRDTYPE_P3_4_GB:
243 case NETXEN_BRDTYPE_P3_4_GB_MM:
244 adapter->msix_supported = 0;
245 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
248 case NETXEN_BRDTYPE_P2_SB35_4G:
249 case NETXEN_BRDTYPE_P2_SB31_2G:
250 adapter->msix_supported = 0;
251 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
255 adapter->msix_supported = 0;
256 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
258 printk(KERN_WARNING "Unknown board type(0x%x)\n",
259 adapter->ahw.boardcfg.board_type);
263 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
264 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
265 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
267 adapter->max_possible_rss_rings = 1;
272 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
276 if (first_boot == 0x55555555) {
277 /* This is the first boot after power up */
279 /* PCI bus master workaround */
280 adapter->hw_read_wx(adapter,
281 NETXEN_PCIE_REG(0x4), &first_boot, 4);
282 if (!(first_boot & 0x4)) {
284 adapter->hw_write_wx(adapter,
285 NETXEN_PCIE_REG(0x4), &first_boot, 4);
286 adapter->hw_read_wx(adapter,
287 NETXEN_PCIE_REG(0x4), &first_boot, 4);
290 /* This is the first boot after power up */
291 adapter->hw_read_wx(adapter,
292 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
293 if (first_boot != 0x80000f) {
294 /* clear the register for future unloads/loads */
295 adapter->pci_write_normalize(adapter,
296 NETXEN_CAM_RAM(0x1fc), 0);
300 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
301 /* Start P2 boot loader */
302 adapter->pci_write_normalize(adapter,
303 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
304 adapter->pci_write_normalize(adapter,
305 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
311 static void netxen_set_port_mode(struct netxen_adapter *adapter)
315 val = adapter->ahw.boardcfg.board_type;
316 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
317 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
318 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
319 data = NETXEN_PORT_MODE_802_3_AP;
320 adapter->hw_write_wx(adapter,
321 NETXEN_PORT_MODE_ADDR, &data, 4);
322 } else if (port_mode == NETXEN_PORT_MODE_XG) {
323 data = NETXEN_PORT_MODE_XG;
324 adapter->hw_write_wx(adapter,
325 NETXEN_PORT_MODE_ADDR, &data, 4);
326 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
327 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
328 adapter->hw_write_wx(adapter,
329 NETXEN_PORT_MODE_ADDR, &data, 4);
330 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
331 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
332 adapter->hw_write_wx(adapter,
333 NETXEN_PORT_MODE_ADDR, &data, 4);
335 data = NETXEN_PORT_MODE_AUTO_NEG;
336 adapter->hw_write_wx(adapter,
337 NETXEN_PORT_MODE_ADDR, &data, 4);
340 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
341 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
342 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
343 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
344 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
346 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
351 #define PCI_CAP_ID_GEN 0x10
353 static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
360 struct pci_dev *pdev;
362 pdev = pci_get_device(0x1166, 0x0140, NULL);
365 adapter->hw_read_wx(adapter,
366 NETXEN_PCIE_REG(PCIE_TGT_SPLIT_CHICKEN), &chicken, 4);
368 adapter->hw_write_wx(adapter,
369 NETXEN_PCIE_REG(PCIE_TGT_SPLIT_CHICKEN), &chicken, 4);
372 pdev = adapter->pdev;
374 adapter->hw_read_wx(adapter,
375 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
376 /* clear chicken3.25:24 */
377 chicken &= 0xFCFFFFFF;
379 * if gen1 and B0, set F1020 - if gen 2, do nothing
380 * if gen2 set to F1000
382 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
384 pci_read_config_dword(pdev, pos + 0x10, &control);
385 if ((control & 0x000F0000) != 0x00020000) {
386 /* set chicken3.24 if gen1 */
387 chicken |= 0x01000000;
389 printk(KERN_INFO "%s Gen2 strapping detected\n",
390 netxen_nic_driver_name);
393 /* set chicken3.24 if gen1 */
394 chicken |= 0x01000000;
395 printk(KERN_INFO "%s Gen1 strapping detected\n",
396 netxen_nic_driver_name);
397 if (adapter->ahw.revision_id == NX_P3_B0)
403 adapter->hw_write_wx(adapter,
404 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
409 pdevfuncsave = pdev->devfn;
410 if (pdevfuncsave & 0x07)
413 for (i = 0; i < 8; i++) {
414 pci_read_config_dword(pdev, pos + 8, &control);
415 pci_read_config_dword(pdev, pos + 8, &control);
416 pci_write_config_dword(pdev, pos + 8, c8c9value);
419 pdev->devfn = pdevfuncsave;
422 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
427 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
429 pci_read_config_dword(pdev, pos, &control);
431 control |= PCI_MSIX_FLAGS_ENABLE;
434 pci_write_config_dword(pdev, pos, control);
438 static void netxen_init_msix_entries(struct netxen_adapter *adapter)
442 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
443 adapter->msix_entries[i].entry = i;
447 netxen_read_mac_addr(struct netxen_adapter *adapter)
452 DECLARE_MAC_BUF(mac);
453 struct net_device *netdev = adapter->netdev;
454 struct pci_dev *pdev = adapter->pdev;
456 if (netxen_is_flash_supported(adapter) != 0)
459 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
460 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
463 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
467 p = (unsigned char *)&mac_addr;
468 for (i = 0; i < 6; i++)
469 netdev->dev_addr[i] = *(p + 5 - i);
471 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
473 /* set station address */
475 if (!is_valid_ether_addr(netdev->perm_addr)) {
476 dev_warn(&pdev->dev, "Bad MAC address %s.\n",
477 print_mac(mac, netdev->dev_addr));
479 adapter->macaddr_set(adapter, netdev->dev_addr);
487 * The Linux system will invoke this after identifying the vendor ID and
488 * device Id in the pci_tbl supported by this module.
490 * A quad port card has one operational PCI config space, (function 0),
491 * which is used to access all four ports.
493 * This routine will initialize the adapter, and setup the global parameters
494 * along with the port's specific structure.
497 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
499 struct net_device *netdev = NULL;
500 struct netxen_adapter *adapter = NULL;
501 void __iomem *mem_ptr0 = NULL;
502 void __iomem *mem_ptr1 = NULL;
503 void __iomem *mem_ptr2 = NULL;
504 unsigned long first_page_group_end;
505 unsigned long first_page_group_start;
508 u8 __iomem *db_ptr = NULL;
509 unsigned long mem_base, mem_len, db_base, db_len, pci_len0 = 0;
511 int first_driver, first_boot;
513 int pci_func_id = PCI_FUNC(pdev->devfn);
514 struct netxen_legacy_intr_set *legacy_intrp;
517 if (pci_func_id == 0)
518 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
520 if (pdev->class != 0x020000) {
521 printk(KERN_DEBUG "NetXen function %d, class %x will not "
522 "be enabled.\n",pci_func_id, pdev->class);
526 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
527 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
528 "will not be enabled.\n",
533 if ((err = pci_enable_device(pdev)))
536 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
538 goto err_out_disable_pdev;
541 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
542 goto err_out_disable_pdev;
544 pci_set_master(pdev);
546 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
548 printk(KERN_ERR"%s: Failed to allocate memory for the "
549 "device block.Check system memory resource"
550 " usage.\n", netxen_nic_driver_name);
551 goto err_out_free_res;
554 SET_NETDEV_DEV(netdev, &pdev->dev);
556 adapter = netdev->priv;
557 adapter->netdev = netdev;
558 adapter->pdev = pdev;
559 adapter->ahw.pci_func = pci_func_id;
561 revision_id = pdev->revision;
562 adapter->ahw.revision_id = revision_id;
564 err = nx_set_dma_mask(adapter, revision_id);
566 goto err_out_free_netdev;
568 rwlock_init(&adapter->adapter_lock);
569 adapter->ahw.qdr_sn_window = -1;
570 adapter->ahw.ddr_mn_window = -1;
572 /* remap phys address */
573 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
574 mem_len = pci_resource_len(pdev, 0);
577 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
578 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
579 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
580 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
581 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
582 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
583 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
584 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
585 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
587 /* 128 Meg of memory */
588 if (mem_len == NETXEN_PCI_128MB_SIZE) {
589 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
590 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
591 SECOND_PAGE_GROUP_SIZE);
592 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
593 THIRD_PAGE_GROUP_SIZE);
594 first_page_group_start = FIRST_PAGE_GROUP_START;
595 first_page_group_end = FIRST_PAGE_GROUP_END;
596 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
597 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
598 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
599 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
600 first_page_group_start = 0;
601 first_page_group_end = 0;
602 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
603 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
604 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
605 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
606 adapter->pci_write_immediate =
607 netxen_nic_pci_write_immediate_2M;
608 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
609 adapter->pci_write_normalize =
610 netxen_nic_pci_write_normalize_2M;
611 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
612 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
613 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
615 mem_ptr0 = ioremap(mem_base, mem_len);
617 first_page_group_start = 0;
618 first_page_group_end = 0;
620 adapter->ahw.ddr_mn_window = 0;
621 adapter->ahw.qdr_sn_window = 0;
623 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
624 (pci_func_id * 0x20);
625 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
627 adapter->ahw.ms_win_crb += (pci_func_id * 0x20);
629 adapter->ahw.ms_win_crb +=
630 0xA0 + ((pci_func_id - 4) * 0x10);
633 goto err_out_free_netdev;
636 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
638 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
639 db_len = pci_resource_len(pdev, 4);
642 printk(KERN_ERR "%s: doorbell is disabled\n",
643 netxen_nic_driver_name);
645 goto err_out_iounmap;
647 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
650 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
652 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
653 netxen_nic_driver_name);
655 goto err_out_iounmap;
657 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
659 adapter->ahw.pci_base0 = mem_ptr0;
660 adapter->ahw.pci_len0 = pci_len0;
661 adapter->ahw.first_page_group_start = first_page_group_start;
662 adapter->ahw.first_page_group_end = first_page_group_end;
663 adapter->ahw.pci_base1 = mem_ptr1;
664 adapter->ahw.pci_base2 = mem_ptr2;
665 adapter->ahw.db_base = db_ptr;
666 adapter->ahw.db_len = db_len;
668 netif_napi_add(netdev, &adapter->napi,
669 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
671 if (revision_id >= NX_P3_B0)
672 legacy_intrp = &legacy_intr[pci_func_id];
674 legacy_intrp = &legacy_intr[0];
676 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
677 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
678 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
679 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
681 /* this will be read from FW later */
682 adapter->intr_scheme = -1;
683 adapter->msi_mode = -1;
685 /* This will be reset for mezz cards */
686 adapter->portnum = pci_func_id;
687 adapter->status &= ~NETXEN_NETDEV_STATUS;
688 adapter->rx_csum = 1;
689 adapter->mc_enabled = 0;
690 if (NX_IS_REVISION_P3(revision_id))
691 adapter->max_mc_count = 38;
693 adapter->max_mc_count = 16;
695 netdev->open = netxen_nic_open;
696 netdev->stop = netxen_nic_close;
697 netdev->hard_start_xmit = netxen_nic_xmit_frame;
698 netdev->get_stats = netxen_nic_get_stats;
699 if (NX_IS_REVISION_P3(revision_id))
700 netdev->set_multicast_list = netxen_p3_nic_set_multi;
702 netdev->set_multicast_list = netxen_p2_nic_set_multi;
703 netdev->set_mac_address = netxen_nic_set_mac;
704 netdev->change_mtu = netxen_nic_change_mtu;
705 netdev->tx_timeout = netxen_tx_timeout;
706 netdev->watchdog_timeo = 2*HZ;
708 netxen_nic_change_mtu(netdev, netdev->mtu);
710 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
711 #ifdef CONFIG_NET_POLL_CONTROLLER
712 netdev->poll_controller = netxen_nic_poll_controller;
714 /* ScatterGather support */
715 netdev->features = NETIF_F_SG;
716 netdev->features |= NETIF_F_IP_CSUM;
717 netdev->features |= NETIF_F_TSO;
718 if (NX_IS_REVISION_P3(revision_id)) {
719 netdev->features |= NETIF_F_IPV6_CSUM;
720 netdev->features |= NETIF_F_TSO6;
723 if (adapter->pci_using_dac)
724 netdev->features |= NETIF_F_HIGHDMA;
727 * Set the CRB window to invalid. If any register in window 0 is
728 * accessed it should set the window to 0 and then reset it to 1.
730 adapter->curr_window = 255;
732 if (netxen_nic_get_board_info(adapter) != 0) {
733 printk("%s: Error getting board config info.\n",
734 netxen_nic_driver_name);
736 goto err_out_iounmap;
739 netxen_initialize_adapter_ops(adapter);
741 /* Mezz cards have PCI function 0,2,3 enabled */
742 switch (adapter->ahw.boardcfg.board_type) {
743 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
744 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
745 if (pci_func_id >= 2)
746 adapter->portnum = pci_func_id - 2;
753 * This call will setup various max rx/tx counts.
754 * It must be done before any buffer/ring allocations.
756 netxen_check_options(adapter);
759 if (NX_IS_REVISION_P3(revision_id)) {
760 if (adapter->ahw.pci_func == 0)
763 if (adapter->portnum == 0)
768 first_boot = adapter->pci_read_normalize(adapter,
769 NETXEN_CAM_RAM(0x1fc));
771 err = netxen_check_hw_init(adapter, first_boot);
773 printk(KERN_ERR "%s: error in init HW init sequence\n",
774 netxen_nic_driver_name);
775 goto err_out_iounmap;
778 if (NX_IS_REVISION_P3(revision_id))
779 netxen_set_port_mode(adapter);
781 if (first_boot != 0x55555555) {
782 adapter->pci_write_normalize(adapter,
783 CRB_CMDPEG_STATE, 0);
784 netxen_pinit_from_rom(adapter, 0);
786 netxen_load_firmware(adapter);
789 if (NX_IS_REVISION_P3(revision_id))
790 netxen_pcie_strap_init(adapter);
792 if (NX_IS_REVISION_P2(revision_id)) {
794 /* Initialize multicast addr pool owners */
796 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
798 netxen_crb_writelit_adapter(adapter,
799 NETXEN_MAC_ADDR_CNTL_REG, val);
803 if ((first_boot == 0x55555555) &&
804 (NX_IS_REVISION_P2(revision_id))) {
805 /* Unlock the HW, prompting the boot sequence */
806 adapter->pci_write_normalize(adapter,
807 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
810 err = netxen_initialize_adapter_offload(adapter);
812 goto err_out_iounmap;
815 * Tell the hardware our version number.
817 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
818 | ((_NETXEN_NIC_LINUX_MINOR << 8))
819 | (_NETXEN_NIC_LINUX_SUBVERSION);
820 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i);
822 /* Handshake with the card before we register the devices. */
823 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
827 netxen_nic_flash_print(adapter);
829 if (NX_IS_REVISION_P3(revision_id)) {
830 adapter->hw_read_wx(adapter,
831 NETXEN_MIU_MN_CONTROL, &val, 4);
832 adapter->ahw.cut_through = (val & 0x4) ? 1 : 0;
833 dev_info(&pdev->dev, "firmware running in %s mode\n",
834 adapter->ahw.cut_through ? "cut through" : "legacy");
838 * See if the firmware gave us a virtual-physical port mapping.
840 adapter->physical_port = adapter->portnum;
841 i = adapter->pci_read_normalize(adapter, CRB_V2P(adapter->portnum));
843 adapter->physical_port = i;
845 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
847 netxen_set_msix_bit(pdev, 0);
849 if (NX_IS_REVISION_P3(revision_id)) {
850 if ((mem_len != NETXEN_PCI_128MB_SIZE) &&
851 mem_len != NETXEN_PCI_2MB_SIZE)
852 adapter->msix_supported = 0;
855 if (adapter->msix_supported) {
857 netxen_init_msix_entries(adapter);
859 if (pci_enable_msix(pdev, adapter->msix_entries,
860 MSIX_ENTRIES_PER_ADAPTER))
863 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
864 netxen_set_msix_bit(pdev, 1);
865 dev_info(&pdev->dev, "using msi-x interrupts\n");
869 if (use_msi && !pci_enable_msi(pdev)) {
870 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
871 dev_info(&pdev->dev, "using msi interrupts\n");
873 dev_info(&pdev->dev, "using legacy interrupts\n");
876 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
877 netdev->irq = adapter->msix_entries[0].vector;
879 netdev->irq = pdev->irq;
881 err = netxen_receive_peg_ready(adapter);
883 goto err_out_disable_msi;
885 init_timer(&adapter->watchdog_timer);
886 adapter->watchdog_timer.function = &netxen_watchdog;
887 adapter->watchdog_timer.data = (unsigned long)adapter;
888 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
889 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
891 err = netxen_read_mac_addr(adapter);
893 dev_warn(&pdev->dev, "failed to read mac addr\n");
895 netif_carrier_off(netdev);
896 netif_stop_queue(netdev);
898 if ((err = register_netdev(netdev))) {
899 printk(KERN_ERR "%s: register_netdev failed port #%d"
900 " aborting\n", netxen_nic_driver_name,
903 goto err_out_disable_msi;
906 pci_set_drvdata(pdev, adapter);
908 switch (adapter->ahw.board_type) {
910 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
911 adapter->netdev->name);
913 case NETXEN_NIC_XGBE:
914 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
915 adapter->netdev->name);
922 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
923 pci_disable_msix(pdev);
924 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
925 pci_disable_msi(pdev);
928 netxen_free_adapter_offload(adapter);
945 pci_release_regions(pdev);
947 err_out_disable_pdev:
948 pci_set_drvdata(pdev, NULL);
949 pci_disable_device(pdev);
953 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
955 struct netxen_adapter *adapter;
956 struct net_device *netdev;
958 adapter = pci_get_drvdata(pdev);
962 netdev = adapter->netdev;
964 unregister_netdev(netdev);
966 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
967 netxen_free_hw_resources(adapter);
968 netxen_release_rx_buffers(adapter);
969 netxen_free_sw_resources(adapter);
972 if (adapter->portnum == 0)
973 netxen_free_adapter_offload(adapter);
976 free_irq(adapter->irq, adapter);
978 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
979 pci_disable_msix(pdev);
980 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
981 pci_disable_msi(pdev);
983 iounmap(adapter->ahw.db_base);
984 iounmap(adapter->ahw.pci_base0);
985 iounmap(adapter->ahw.pci_base1);
986 iounmap(adapter->ahw.pci_base2);
988 pci_release_regions(pdev);
989 pci_disable_device(pdev);
990 pci_set_drvdata(pdev, NULL);
996 * Called when a network interface is made active
997 * @returns 0 on success, negative value on failure
999 static int netxen_nic_open(struct net_device *netdev)
1001 struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv;
1004 irq_handler_t handler;
1005 unsigned long flags = IRQF_SAMPLE_RANDOM;
1007 if (adapter->driver_mismatch)
1010 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1011 err = netxen_init_firmware(adapter);
1013 printk(KERN_ERR "Failed to init firmware\n");
1017 if (adapter->fw_major < 4)
1018 adapter->max_rds_rings = 3;
1020 adapter->max_rds_rings = 2;
1022 err = netxen_alloc_sw_resources(adapter);
1024 printk(KERN_ERR "%s: Error in setting sw resources\n",
1029 netxen_nic_clear_stats(adapter);
1031 err = netxen_alloc_hw_resources(adapter);
1033 printk(KERN_ERR "%s: Error in setting hw resources\n",
1035 goto err_out_free_sw;
1038 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
1039 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
1040 printk(KERN_ERR "%s: Firmware interrupt scheme is "
1041 "incompatible with driver\n",
1043 adapter->driver_mismatch = 1;
1044 goto err_out_free_hw;
1047 if (adapter->fw_major < 4) {
1048 adapter->crb_addr_cmd_producer =
1049 crb_cmd_producer[adapter->portnum];
1050 adapter->crb_addr_cmd_consumer =
1051 crb_cmd_consumer[adapter->portnum];
1053 netxen_nic_update_cmd_producer(adapter, 0);
1054 netxen_nic_update_cmd_consumer(adapter, 0);
1057 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1058 for (ring = 0; ring < adapter->max_rds_rings; ring++)
1059 netxen_post_rx_buffers(adapter, ctx, ring);
1061 if (NETXEN_IS_MSI_FAMILY(adapter))
1062 handler = netxen_msi_intr;
1064 flags |= IRQF_SHARED;
1065 handler = netxen_intr;
1067 adapter->irq = netdev->irq;
1068 err = request_irq(adapter->irq, handler,
1069 flags, netdev->name, adapter);
1071 printk(KERN_ERR "request_irq failed with: %d\n", err);
1072 goto err_out_free_rxbuf;
1075 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1078 /* Done here again so that even if phantom sw overwrote it,
1080 err = adapter->init_port(adapter, adapter->physical_port);
1082 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1083 netxen_nic_driver_name, adapter->portnum);
1084 goto err_out_free_irq;
1086 adapter->macaddr_set(adapter, netdev->dev_addr);
1088 netxen_nic_set_link_parameters(adapter);
1090 netdev->set_multicast_list(netdev);
1091 if (adapter->set_mtu)
1092 adapter->set_mtu(adapter, netdev->mtu);
1094 adapter->ahw.linkup = 0;
1095 mod_timer(&adapter->watchdog_timer, jiffies);
1097 napi_enable(&adapter->napi);
1098 netxen_nic_enable_int(adapter);
1100 netif_start_queue(netdev);
1105 free_irq(adapter->irq, adapter);
1107 netxen_release_rx_buffers(adapter);
1109 netxen_free_hw_resources(adapter);
1111 netxen_free_sw_resources(adapter);
1116 * netxen_nic_close - Disables a network interface entry point
1118 static int netxen_nic_close(struct net_device *netdev)
1120 struct netxen_adapter *adapter = netdev_priv(netdev);
1122 netif_carrier_off(netdev);
1123 netif_stop_queue(netdev);
1124 napi_disable(&adapter->napi);
1126 if (adapter->stop_port)
1127 adapter->stop_port(adapter);
1129 netxen_nic_disable_int(adapter);
1131 netxen_release_tx_buffers(adapter);
1133 FLUSH_SCHEDULED_WORK();
1134 del_timer_sync(&adapter->watchdog_timer);
1139 void netxen_tso_check(struct netxen_adapter *adapter,
1140 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1143 desc->total_hdr_length = (sizeof(struct ethhdr) +
1144 ip_hdrlen(skb) + tcp_hdrlen(skb));
1146 if ((NX_IS_REVISION_P3(adapter->ahw.revision_id)) &&
1147 (skb->protocol == htons(ETH_P_IPV6)))
1148 netxen_set_cmd_desc_opcode(desc, TX_TCP_LSO6);
1150 netxen_set_cmd_desc_opcode(desc, TX_TCP_LSO);
1152 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1153 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
1154 netxen_set_cmd_desc_opcode(desc, TX_TCP_PKT);
1155 else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1156 netxen_set_cmd_desc_opcode(desc, TX_UDP_PKT);
1160 desc->tcp_hdr_offset = skb_transport_offset(skb);
1161 desc->ip_hdr_offset = skb_network_offset(skb);
1164 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1166 struct netxen_adapter *adapter = netdev_priv(netdev);
1167 struct netxen_hardware_context *hw = &adapter->ahw;
1168 unsigned int first_seg_len = skb->len - skb->data_len;
1169 struct netxen_skb_frag *buffrag;
1172 u32 producer, consumer;
1173 u32 saved_producer = 0;
1174 struct cmd_desc_type0 *hwdesc;
1176 struct netxen_cmd_buffer *pbuf = NULL;
1179 u32 num_txd = adapter->max_tx_desc_count;
1181 frag_count = skb_shinfo(skb)->nr_frags + 1;
1183 /* There 4 fragments per descriptor */
1184 no_of_desc = (frag_count + 3) >> 2;
1185 if (netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1186 if (skb_shinfo(skb)->gso_size > 0) {
1189 if ((ip_hdrlen(skb) + tcp_hdrlen(skb) +
1190 sizeof(struct ethhdr)) >
1191 (sizeof(struct cmd_desc_type0) - 2)) {
1197 producer = adapter->cmd_producer;
1199 consumer = adapter->last_cmd_consumer;
1200 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1201 netif_stop_queue(netdev);
1203 return NETDEV_TX_BUSY;
1206 /* Copy the descriptors into the hardware */
1207 saved_producer = producer;
1208 hwdesc = &hw->cmd_desc_head[producer];
1209 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1210 /* Take skb->data itself */
1211 pbuf = &adapter->cmd_buf_arr[producer];
1212 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1213 skb_shinfo(skb)->gso_size > 0) {
1214 pbuf->mss = skb_shinfo(skb)->gso_size;
1215 hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1220 pbuf->total_length = skb->len;
1222 pbuf->cmd = TX_ETHER_PKT;
1223 pbuf->frag_count = frag_count;
1224 pbuf->port = adapter->portnum;
1225 buffrag = &pbuf->frag_array[0];
1226 buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
1228 buffrag->length = first_seg_len;
1229 netxen_set_cmd_desc_totallength(hwdesc, skb->len);
1230 netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count);
1231 netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT);
1233 netxen_set_cmd_desc_port(hwdesc, adapter->portnum);
1234 netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum);
1235 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1236 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1238 for (i = 1, k = 1; i < frag_count; i++, k++) {
1239 struct skb_frag_struct *frag;
1241 unsigned long offset;
1242 dma_addr_t temp_dma;
1244 /* move to next desc. if there is a need */
1245 if ((i & 0x3) == 0) {
1247 producer = get_next_index(producer, num_txd);
1248 hwdesc = &hw->cmd_desc_head[producer];
1249 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1250 pbuf = &adapter->cmd_buf_arr[producer];
1253 frag = &skb_shinfo(skb)->frags[i - 1];
1255 offset = frag->page_offset;
1258 temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
1259 len, PCI_DMA_TODEVICE);
1262 buffrag->dma = temp_dma;
1263 buffrag->length = temp_len;
1267 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1268 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1271 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1272 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1275 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1276 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1279 hwdesc->buffer4_length = cpu_to_le16(temp_len);
1280 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1285 producer = get_next_index(producer, num_txd);
1287 /* might change opcode to TX_TCP_LSO */
1288 netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb);
1290 /* For LSO, we need to copy the MAC/IP/TCP headers into
1291 * the descriptor ring
1293 if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer])
1295 int hdr_len, first_hdr_len, more_hdr;
1296 hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length;
1297 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1298 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1301 first_hdr_len = hdr_len;
1304 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1305 hwdesc = &hw->cmd_desc_head[producer];
1306 pbuf = &adapter->cmd_buf_arr[producer];
1309 /* copy the first 64 bytes */
1310 memcpy(((void *)hwdesc) + 2,
1311 (void *)(skb->data), first_hdr_len);
1312 producer = get_next_index(producer, num_txd);
1315 hwdesc = &hw->cmd_desc_head[producer];
1316 pbuf = &adapter->cmd_buf_arr[producer];
1318 /* copy the next 64 bytes - should be enough except
1319 * for pathological case
1321 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1325 producer = get_next_index(producer, num_txd);
1329 adapter->cmd_producer = producer;
1330 adapter->stats.txbytes += skb->len;
1332 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
1334 adapter->stats.xmitcalled++;
1335 netdev->trans_start = jiffies;
1337 return NETDEV_TX_OK;
1340 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1342 struct net_device *netdev = adapter->netdev;
1343 uint32_t temp, temp_state, temp_val;
1346 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1348 temp_state = nx_get_temp_state(temp);
1349 temp_val = nx_get_temp_val(temp);
1351 if (temp_state == NX_TEMP_PANIC) {
1353 "%s: Device temperature %d degrees C exceeds"
1354 " maximum allowed. Hardware has been shut down.\n",
1355 netxen_nic_driver_name, temp_val);
1357 netif_carrier_off(netdev);
1358 netif_stop_queue(netdev);
1360 } else if (temp_state == NX_TEMP_WARN) {
1361 if (adapter->temp == NX_TEMP_NORMAL) {
1363 "%s: Device temperature %d degrees C "
1364 "exceeds operating range."
1365 " Immediate action needed.\n",
1366 netxen_nic_driver_name, temp_val);
1369 if (adapter->temp == NX_TEMP_WARN) {
1371 "%s: Device temperature is now %d degrees C"
1372 " in normal range.\n", netxen_nic_driver_name,
1376 adapter->temp = temp_state;
1380 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1382 struct net_device *netdev = adapter->netdev;
1383 u32 val, port, linkup;
1385 port = adapter->physical_port;
1387 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1388 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1389 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1390 linkup = (val == XG_LINK_UP_P3);
1392 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1393 if (adapter->ahw.board_type == NETXEN_NIC_GBE)
1394 linkup = (val >> port) & 1;
1396 val = (val >> port*8) & 0xff;
1397 linkup = (val == XG_LINK_UP);
1401 if (adapter->ahw.linkup && !linkup) {
1402 printk(KERN_INFO "%s: %s NIC Link is down\n",
1403 netxen_nic_driver_name, netdev->name);
1404 adapter->ahw.linkup = 0;
1405 if (netif_running(netdev)) {
1406 netif_carrier_off(netdev);
1407 netif_stop_queue(netdev);
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);
1420 static void netxen_watchdog(unsigned long v)
1422 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1424 SCHEDULE_WORK(&adapter->watchdog_task);
1427 void netxen_watchdog_task(struct work_struct *work)
1429 struct netxen_adapter *adapter =
1430 container_of(work, struct netxen_adapter, watchdog_task);
1432 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1435 netxen_nic_handle_phy_intr(adapter);
1437 if (netif_running(adapter->netdev))
1438 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1441 static void netxen_tx_timeout(struct net_device *netdev)
1443 struct netxen_adapter *adapter = (struct netxen_adapter *)
1444 netdev_priv(netdev);
1445 SCHEDULE_WORK(&adapter->tx_timeout_task);
1448 static void netxen_tx_timeout_task(struct work_struct *work)
1450 struct netxen_adapter *adapter =
1451 container_of(work, struct netxen_adapter, tx_timeout_task);
1453 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1454 netxen_nic_driver_name, adapter->netdev->name);
1456 netxen_nic_disable_int(adapter);
1457 napi_disable(&adapter->napi);
1459 adapter->netdev->trans_start = jiffies;
1461 napi_enable(&adapter->napi);
1462 netxen_nic_enable_int(adapter);
1463 netif_wake_queue(adapter->netdev);
1467 * netxen_nic_get_stats - Get System Network Statistics
1468 * @netdev: network interface device structure
1470 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1472 struct netxen_adapter *adapter = netdev_priv(netdev);
1473 struct net_device_stats *stats = &adapter->net_stats;
1475 memset(stats, 0, sizeof(*stats));
1477 /* total packets received */
1478 stats->rx_packets = adapter->stats.no_rcv;
1479 /* total packets transmitted */
1480 stats->tx_packets = adapter->stats.xmitedframes +
1481 adapter->stats.xmitfinished;
1482 /* total bytes received */
1483 stats->rx_bytes = adapter->stats.rxbytes;
1484 /* total bytes transmitted */
1485 stats->tx_bytes = adapter->stats.txbytes;
1486 /* bad packets received */
1487 stats->rx_errors = adapter->stats.rcvdbadskb;
1488 /* packet transmit problems */
1489 stats->tx_errors = adapter->stats.nocmddescriptor;
1490 /* no space in linux buffers */
1491 stats->rx_dropped = adapter->stats.rxdropped;
1492 /* no space available in linux */
1493 stats->tx_dropped = adapter->stats.txdropped;
1498 static irqreturn_t netxen_intr(int irq, void *data)
1500 struct netxen_adapter *adapter = data;
1503 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1505 if (!(status & adapter->legacy_intr.int_vec_bit))
1508 if (adapter->ahw.revision_id >= NX_P3_B1) {
1509 /* check interrupt state machine, to be sure */
1510 status = adapter->pci_read_immediate(adapter,
1512 if (!ISR_LEGACY_INT_TRIGGERED(status))
1516 unsigned long our_int = 0;
1518 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
1520 /* not our interrupt */
1521 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1524 /* claim interrupt */
1525 adapter->pci_write_normalize(adapter,
1526 CRB_INT_VECTOR, (our_int & 0xffffffff));
1529 /* clear interrupt */
1530 if (adapter->fw_major < 4)
1531 netxen_nic_disable_int(adapter);
1533 adapter->pci_write_immediate(adapter,
1534 adapter->legacy_intr.tgt_status_reg,
1536 /* read twice to ensure write is flushed */
1537 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1538 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1540 napi_schedule(&adapter->napi);
1545 static irqreturn_t netxen_msi_intr(int irq, void *data)
1547 struct netxen_adapter *adapter = data;
1549 /* clear interrupt */
1550 adapter->pci_write_immediate(adapter,
1551 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1553 napi_schedule(&adapter->napi);
1557 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1559 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
1564 tx_complete = netxen_process_cmd_ring(adapter);
1567 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1569 * Fairness issue. This will give undue weight to the
1570 * receive context 0.
1574 * To avoid starvation, we give each of our receivers,
1575 * a fraction of the quota. Sometimes, it might happen that we
1576 * have enough quota to process every packet, but since all the
1577 * packets are on one context, it gets only half of the quota,
1578 * and ends up not processing it.
1580 work_done += netxen_process_rcv_ring(adapter, ctx,
1581 budget / MAX_RCV_CTX);
1584 if ((work_done < budget) && tx_complete) {
1585 netif_rx_complete(adapter->netdev, &adapter->napi);
1586 netxen_nic_enable_int(adapter);
1592 #ifdef CONFIG_NET_POLL_CONTROLLER
1593 static void netxen_nic_poll_controller(struct net_device *netdev)
1595 struct netxen_adapter *adapter = netdev_priv(netdev);
1596 disable_irq(adapter->irq);
1597 netxen_intr(adapter->irq, adapter);
1598 enable_irq(adapter->irq);
1602 static struct pci_driver netxen_driver = {
1603 .name = netxen_nic_driver_name,
1604 .id_table = netxen_pci_tbl,
1605 .probe = netxen_nic_probe,
1606 .remove = __devexit_p(netxen_nic_remove)
1609 /* Driver Registration on NetXen card */
1611 static int __init netxen_init_module(void)
1613 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1616 return pci_register_driver(&netxen_driver);
1619 module_init(netxen_init_module);
1621 static void __exit netxen_exit_module(void)
1623 pci_unregister_driver(&netxen_driver);
1624 destroy_workqueue(netxen_workq);
1627 module_exit(netxen_exit_module);