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>
42 #include <linux/if_vlan.h>
45 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
46 MODULE_LICENSE("GPL");
47 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
49 char netxen_nic_driver_name[] = "netxen_nic";
50 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
51 NETXEN_NIC_LINUX_VERSIONID;
53 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
55 /* Default to restricted 1G auto-neg mode */
56 static int wol_port_mode = 5;
58 static int use_msi = 1;
60 static int use_msi_x = 1;
62 /* Local functions to NetXen NIC driver */
63 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
64 const struct pci_device_id *ent);
65 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
66 static int netxen_nic_open(struct net_device *netdev);
67 static int netxen_nic_close(struct net_device *netdev);
68 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
69 static void netxen_tx_timeout(struct net_device *netdev);
70 static void netxen_tx_timeout_task(struct work_struct *work);
71 static void netxen_watchdog(unsigned long);
72 static int netxen_nic_poll(struct napi_struct *napi, int budget);
73 #ifdef CONFIG_NET_POLL_CONTROLLER
74 static void netxen_nic_poll_controller(struct net_device *netdev);
76 static irqreturn_t netxen_intr(int irq, void *data);
77 static irqreturn_t netxen_msi_intr(int irq, void *data);
79 /* PCI Device ID Table */
80 #define ENTRY(device) \
81 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
82 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
84 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
85 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
86 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
87 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
88 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
91 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
92 ENTRY(PCI_DEVICE_ID_NX3031),
96 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
99 * In netxen_nic_down(), we must wait for any pending callback requests into
100 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
101 * reenabled right after it is deleted in netxen_nic_down().
102 * FLUSH_SCHEDULED_WORK() does this synchronization.
104 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
105 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
106 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
107 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
108 * linkwatch_event() to be executed which also attempts to acquire the rtnl
109 * lock thus causing a deadlock.
112 static struct workqueue_struct *netxen_workq;
113 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
114 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
116 static void netxen_watchdog(unsigned long);
118 static uint32_t crb_cmd_producer[4] = {
119 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
120 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
124 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
125 uint32_t crb_producer)
127 adapter->pci_write_normalize(adapter,
128 adapter->crb_addr_cmd_producer, crb_producer);
131 static uint32_t crb_cmd_consumer[4] = {
132 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
133 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
137 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
140 adapter->pci_write_normalize(adapter,
141 adapter->crb_addr_cmd_consumer, crb_consumer);
144 static uint32_t msi_tgt_status[8] = {
145 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
146 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
147 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
148 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
151 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
153 static inline void netxen_nic_disable_int(struct netxen_adapter *adapter)
155 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0);
158 static inline void netxen_nic_enable_int(struct netxen_adapter *adapter)
160 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1);
162 if (!NETXEN_IS_MSI_FAMILY(adapter))
163 adapter->pci_write_immediate(adapter,
164 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
167 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
169 struct pci_dev *pdev = adapter->pdev;
174 adapter->dma_mask = DMA_32BIT_MASK;
176 if (revision_id >= NX_P3_B0) {
177 /* should go to DMA_64BIT_MASK */
178 adapter->dma_mask = DMA_39BIT_MASK;
179 mask = DMA_39BIT_MASK;
180 } else if (revision_id == NX_P3_A2) {
181 adapter->dma_mask = DMA_39BIT_MASK;
182 mask = DMA_39BIT_MASK;
183 } else if (revision_id == NX_P2_C1) {
184 adapter->dma_mask = DMA_35BIT_MASK;
185 mask = DMA_35BIT_MASK;
187 adapter->dma_mask = DMA_32BIT_MASK;
188 mask = DMA_32BIT_MASK;
189 goto set_32_bit_mask;
193 * Consistent DMA mask is set to 32 bit because it cannot be set to
194 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
195 * come off this pool.
197 if (pci_set_dma_mask(pdev, mask) == 0 &&
198 pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) == 0) {
199 adapter->pci_using_dac = 1;
202 #endif /* CONFIG_IA64 */
205 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
207 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
209 DPRINTK(ERR, "No usable DMA configuration, aborting:%d\n", err);
213 adapter->pci_using_dac = 0;
217 static void netxen_check_options(struct netxen_adapter *adapter)
219 switch (adapter->ahw.boardcfg.board_type) {
220 case NETXEN_BRDTYPE_P3_HMEZ:
221 case NETXEN_BRDTYPE_P3_XG_LOM:
222 case NETXEN_BRDTYPE_P3_10G_CX4:
223 case NETXEN_BRDTYPE_P3_10G_CX4_LP:
224 case NETXEN_BRDTYPE_P3_IMEZ:
225 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS:
226 case NETXEN_BRDTYPE_P3_10G_SFP_QT:
227 case NETXEN_BRDTYPE_P3_10G_SFP_CT:
228 case NETXEN_BRDTYPE_P3_10G_XFP:
229 case NETXEN_BRDTYPE_P3_10000_BASE_T:
230 adapter->msix_supported = !!use_msi_x;
231 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
234 case NETXEN_BRDTYPE_P2_SB31_10G:
235 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
236 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
237 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
238 adapter->msix_supported = 0;
239 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
242 case NETXEN_BRDTYPE_P3_REF_QG:
243 case NETXEN_BRDTYPE_P3_4_GB:
244 case NETXEN_BRDTYPE_P3_4_GB_MM:
245 adapter->msix_supported = !!use_msi_x;
246 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
249 case NETXEN_BRDTYPE_P2_SB35_4G:
250 case NETXEN_BRDTYPE_P2_SB31_2G:
251 adapter->msix_supported = 0;
252 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
255 case NETXEN_BRDTYPE_P3_10G_TP:
256 adapter->msix_supported = !!use_msi_x;
257 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
258 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
260 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
264 adapter->msix_supported = 0;
265 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
267 printk(KERN_WARNING "Unknown board type(0x%x)\n",
268 adapter->ahw.boardcfg.board_type);
272 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
273 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
274 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
276 adapter->max_possible_rss_rings = 1;
281 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
285 if (first_boot == 0x55555555) {
286 /* This is the first boot after power up */
288 /* PCI bus master workaround */
289 adapter->hw_read_wx(adapter,
290 NETXEN_PCIE_REG(0x4), &first_boot, 4);
291 if (!(first_boot & 0x4)) {
293 adapter->hw_write_wx(adapter,
294 NETXEN_PCIE_REG(0x4), &first_boot, 4);
295 adapter->hw_read_wx(adapter,
296 NETXEN_PCIE_REG(0x4), &first_boot, 4);
299 /* This is the first boot after power up */
300 adapter->hw_read_wx(adapter,
301 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
302 if (first_boot != 0x80000f) {
303 /* clear the register for future unloads/loads */
304 adapter->pci_write_normalize(adapter,
305 NETXEN_CAM_RAM(0x1fc), 0);
309 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
310 /* Start P2 boot loader */
311 adapter->pci_write_normalize(adapter,
312 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
313 adapter->pci_write_normalize(adapter,
314 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
320 static void netxen_set_port_mode(struct netxen_adapter *adapter)
324 val = adapter->ahw.boardcfg.board_type;
325 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
326 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
327 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
328 data = NETXEN_PORT_MODE_802_3_AP;
329 adapter->hw_write_wx(adapter,
330 NETXEN_PORT_MODE_ADDR, &data, 4);
331 } else if (port_mode == NETXEN_PORT_MODE_XG) {
332 data = NETXEN_PORT_MODE_XG;
333 adapter->hw_write_wx(adapter,
334 NETXEN_PORT_MODE_ADDR, &data, 4);
335 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
336 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
337 adapter->hw_write_wx(adapter,
338 NETXEN_PORT_MODE_ADDR, &data, 4);
339 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
340 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
341 adapter->hw_write_wx(adapter,
342 NETXEN_PORT_MODE_ADDR, &data, 4);
344 data = NETXEN_PORT_MODE_AUTO_NEG;
345 adapter->hw_write_wx(adapter,
346 NETXEN_PORT_MODE_ADDR, &data, 4);
349 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
350 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
351 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
352 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
353 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
355 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
360 #define PCI_CAP_ID_GEN 0x10
362 static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
369 struct pci_dev *pdev;
371 pdev = adapter->pdev;
373 adapter->hw_read_wx(adapter,
374 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
375 /* clear chicken3.25:24 */
376 chicken &= 0xFCFFFFFF;
378 * if gen1 and B0, set F1020 - if gen 2, do nothing
379 * if gen2 set to F1000
381 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
383 pci_read_config_dword(pdev, pos + 0x10, &control);
384 if ((control & 0x000F0000) != 0x00020000) {
385 /* set chicken3.24 if gen1 */
386 chicken |= 0x01000000;
388 printk(KERN_INFO "%s Gen2 strapping detected\n",
389 netxen_nic_driver_name);
392 /* set chicken3.24 if gen1 */
393 chicken |= 0x01000000;
394 printk(KERN_INFO "%s Gen1 strapping detected\n",
395 netxen_nic_driver_name);
396 if (adapter->ahw.revision_id == NX_P3_B0)
402 adapter->hw_write_wx(adapter,
403 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
408 pdevfuncsave = pdev->devfn;
409 if (pdevfuncsave & 0x07)
412 for (i = 0; i < 8; i++) {
413 pci_read_config_dword(pdev, pos + 8, &control);
414 pci_read_config_dword(pdev, pos + 8, &control);
415 pci_write_config_dword(pdev, pos + 8, c8c9value);
418 pdev->devfn = pdevfuncsave;
421 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
426 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
428 pci_read_config_dword(pdev, pos, &control);
430 control |= PCI_MSIX_FLAGS_ENABLE;
433 pci_write_config_dword(pdev, pos, control);
437 static void netxen_init_msix_entries(struct netxen_adapter *adapter)
441 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
442 adapter->msix_entries[i].entry = i;
446 netxen_read_mac_addr(struct netxen_adapter *adapter)
451 struct net_device *netdev = adapter->netdev;
452 struct pci_dev *pdev = adapter->pdev;
454 if (netxen_is_flash_supported(adapter) != 0)
457 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
458 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
461 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
465 p = (unsigned char *)&mac_addr;
466 for (i = 0; i < 6; i++)
467 netdev->dev_addr[i] = *(p + 5 - i);
469 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
471 /* set station address */
473 if (!is_valid_ether_addr(netdev->perm_addr))
474 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
476 adapter->macaddr_set(adapter, netdev->dev_addr);
481 static void netxen_set_multicast_list(struct net_device *dev)
483 struct netxen_adapter *adapter = netdev_priv(dev);
485 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
486 netxen_p3_nic_set_multi(dev);
488 netxen_p2_nic_set_multi(dev);
491 static const struct net_device_ops netxen_netdev_ops = {
492 .ndo_open = netxen_nic_open,
493 .ndo_stop = netxen_nic_close,
494 .ndo_start_xmit = netxen_nic_xmit_frame,
495 .ndo_get_stats = netxen_nic_get_stats,
496 .ndo_validate_addr = eth_validate_addr,
497 .ndo_set_multicast_list = netxen_set_multicast_list,
498 .ndo_set_mac_address = netxen_nic_set_mac,
499 .ndo_change_mtu = netxen_nic_change_mtu,
500 .ndo_tx_timeout = netxen_tx_timeout,
501 #ifdef CONFIG_NET_POLL_CONTROLLER
502 .ndo_poll_controller = netxen_nic_poll_controller,
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;
535 int pci_func_id = PCI_FUNC(pdev->devfn);
536 struct netxen_legacy_intr_set *legacy_intrp;
539 if (pci_func_id == 0)
540 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
542 if (pdev->class != 0x020000) {
543 printk(KERN_DEBUG "NetXen function %d, class %x will not "
544 "be enabled.\n",pci_func_id, pdev->class);
548 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
549 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
550 "will not be enabled.\n",
555 if ((err = pci_enable_device(pdev)))
558 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
560 goto err_out_disable_pdev;
563 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
564 goto err_out_disable_pdev;
566 pci_set_master(pdev);
568 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
570 printk(KERN_ERR"%s: Failed to allocate memory for the "
571 "device block.Check system memory resource"
572 " usage.\n", netxen_nic_driver_name);
573 goto err_out_free_res;
576 SET_NETDEV_DEV(netdev, &pdev->dev);
578 adapter = netdev_priv(netdev);
579 adapter->netdev = netdev;
580 adapter->pdev = pdev;
581 adapter->ahw.pci_func = pci_func_id;
583 revision_id = pdev->revision;
584 adapter->ahw.revision_id = revision_id;
586 err = nx_set_dma_mask(adapter, revision_id);
588 goto err_out_free_netdev;
590 rwlock_init(&adapter->adapter_lock);
591 adapter->ahw.qdr_sn_window = -1;
592 adapter->ahw.ddr_mn_window = -1;
594 /* remap phys address */
595 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
596 mem_len = pci_resource_len(pdev, 0);
599 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
600 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
601 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
602 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
603 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
604 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
605 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
606 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
607 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
609 /* 128 Meg of memory */
610 if (mem_len == NETXEN_PCI_128MB_SIZE) {
611 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
612 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
613 SECOND_PAGE_GROUP_SIZE);
614 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
615 THIRD_PAGE_GROUP_SIZE);
616 first_page_group_start = FIRST_PAGE_GROUP_START;
617 first_page_group_end = FIRST_PAGE_GROUP_END;
618 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
619 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
620 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
621 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
622 first_page_group_start = 0;
623 first_page_group_end = 0;
624 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
625 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
626 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
627 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
628 adapter->pci_write_immediate =
629 netxen_nic_pci_write_immediate_2M;
630 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
631 adapter->pci_write_normalize =
632 netxen_nic_pci_write_normalize_2M;
633 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
634 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
635 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
637 mem_ptr0 = ioremap(mem_base, mem_len);
639 first_page_group_start = 0;
640 first_page_group_end = 0;
642 adapter->ahw.ddr_mn_window = 0;
643 adapter->ahw.qdr_sn_window = 0;
645 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
646 (pci_func_id * 0x20);
647 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
649 adapter->ahw.ms_win_crb += (pci_func_id * 0x20);
651 adapter->ahw.ms_win_crb +=
652 0xA0 + ((pci_func_id - 4) * 0x10);
655 goto err_out_free_netdev;
658 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
660 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
661 db_len = pci_resource_len(pdev, 4);
664 printk(KERN_ERR "%s: doorbell is disabled\n",
665 netxen_nic_driver_name);
667 goto err_out_iounmap;
669 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
672 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
674 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
675 netxen_nic_driver_name);
677 goto err_out_iounmap;
679 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
681 adapter->ahw.pci_base0 = mem_ptr0;
682 adapter->ahw.pci_len0 = pci_len0;
683 adapter->ahw.first_page_group_start = first_page_group_start;
684 adapter->ahw.first_page_group_end = first_page_group_end;
685 adapter->ahw.pci_base1 = mem_ptr1;
686 adapter->ahw.pci_base2 = mem_ptr2;
687 adapter->ahw.db_base = db_ptr;
688 adapter->ahw.db_len = db_len;
690 netif_napi_add(netdev, &adapter->napi,
691 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
693 if (revision_id >= NX_P3_B0)
694 legacy_intrp = &legacy_intr[pci_func_id];
696 legacy_intrp = &legacy_intr[0];
698 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
699 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
700 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
701 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
703 /* this will be read from FW later */
704 adapter->intr_scheme = -1;
705 adapter->msi_mode = -1;
707 /* This will be reset for mezz cards */
708 adapter->portnum = pci_func_id;
709 adapter->status &= ~NETXEN_NETDEV_STATUS;
710 adapter->rx_csum = 1;
711 adapter->mc_enabled = 0;
712 if (NX_IS_REVISION_P3(revision_id))
713 adapter->max_mc_count = 38;
715 adapter->max_mc_count = 16;
717 netdev->netdev_ops = &netxen_netdev_ops;
718 netdev->watchdog_timeo = 2*HZ;
720 netxen_nic_change_mtu(netdev, netdev->mtu);
722 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
724 /* ScatterGather support */
725 netdev->features = NETIF_F_SG;
726 netdev->features |= NETIF_F_IP_CSUM;
727 netdev->features |= NETIF_F_TSO;
728 if (NX_IS_REVISION_P3(revision_id)) {
729 netdev->features |= NETIF_F_IPV6_CSUM;
730 netdev->features |= NETIF_F_TSO6;
733 if (adapter->pci_using_dac)
734 netdev->features |= NETIF_F_HIGHDMA;
737 * Set the CRB window to invalid. If any register in window 0 is
738 * accessed it should set the window to 0 and then reset it to 1.
740 adapter->curr_window = 255;
742 if (netxen_nic_get_board_info(adapter) != 0) {
743 printk("%s: Error getting board config info.\n",
744 netxen_nic_driver_name);
746 goto err_out_iounmap;
749 netxen_initialize_adapter_ops(adapter);
751 /* Mezz cards have PCI function 0,2,3 enabled */
752 switch (adapter->ahw.boardcfg.board_type) {
753 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
754 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
755 if (pci_func_id >= 2)
756 adapter->portnum = pci_func_id - 2;
763 * This call will setup various max rx/tx counts.
764 * It must be done before any buffer/ring allocations.
766 netxen_check_options(adapter);
769 if (NX_IS_REVISION_P3(revision_id)) {
770 if (adapter->ahw.pci_func == 0)
773 if (adapter->portnum == 0)
778 first_boot = adapter->pci_read_normalize(adapter,
779 NETXEN_CAM_RAM(0x1fc));
781 err = netxen_check_hw_init(adapter, first_boot);
783 printk(KERN_ERR "%s: error in init HW init sequence\n",
784 netxen_nic_driver_name);
785 goto err_out_iounmap;
788 if (NX_IS_REVISION_P3(revision_id))
789 netxen_set_port_mode(adapter);
791 if (first_boot != 0x55555555) {
792 adapter->pci_write_normalize(adapter,
793 CRB_CMDPEG_STATE, 0);
794 netxen_pinit_from_rom(adapter, 0);
796 netxen_load_firmware(adapter);
799 if (NX_IS_REVISION_P3(revision_id))
800 netxen_pcie_strap_init(adapter);
802 if (NX_IS_REVISION_P2(revision_id)) {
804 /* Initialize multicast addr pool owners */
806 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
808 netxen_crb_writelit_adapter(adapter,
809 NETXEN_MAC_ADDR_CNTL_REG, val);
813 if ((first_boot == 0x55555555) &&
814 (NX_IS_REVISION_P2(revision_id))) {
815 /* Unlock the HW, prompting the boot sequence */
816 adapter->pci_write_normalize(adapter,
817 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
820 err = netxen_initialize_adapter_offload(adapter);
822 goto err_out_iounmap;
825 * Tell the hardware our version number.
827 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
828 | ((_NETXEN_NIC_LINUX_MINOR << 8))
829 | (_NETXEN_NIC_LINUX_SUBVERSION);
830 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i);
832 /* Handshake with the card before we register the devices. */
833 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
837 netxen_nic_flash_print(adapter);
839 if (NX_IS_REVISION_P3(revision_id)) {
840 adapter->hw_read_wx(adapter,
841 NETXEN_MIU_MN_CONTROL, &val, 4);
842 adapter->ahw.cut_through = (val & 0x4) ? 1 : 0;
843 dev_info(&pdev->dev, "firmware running in %s mode\n",
844 adapter->ahw.cut_through ? "cut through" : "legacy");
848 * See if the firmware gave us a virtual-physical port mapping.
850 adapter->physical_port = adapter->portnum;
851 i = adapter->pci_read_normalize(adapter, CRB_V2P(adapter->portnum));
853 adapter->physical_port = i;
855 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
857 netxen_set_msix_bit(pdev, 0);
859 if (NX_IS_REVISION_P3(revision_id)) {
860 if ((mem_len != NETXEN_PCI_128MB_SIZE) &&
861 mem_len != NETXEN_PCI_2MB_SIZE)
862 adapter->msix_supported = 0;
865 if (adapter->msix_supported) {
867 netxen_init_msix_entries(adapter);
869 if (pci_enable_msix(pdev, adapter->msix_entries,
870 MSIX_ENTRIES_PER_ADAPTER))
873 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
874 netxen_set_msix_bit(pdev, 1);
875 dev_info(&pdev->dev, "using msi-x interrupts\n");
879 if (use_msi && !pci_enable_msi(pdev)) {
880 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
881 dev_info(&pdev->dev, "using msi interrupts\n");
883 dev_info(&pdev->dev, "using legacy interrupts\n");
886 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
887 netdev->irq = adapter->msix_entries[0].vector;
889 netdev->irq = pdev->irq;
891 err = netxen_receive_peg_ready(adapter);
893 goto err_out_disable_msi;
895 init_timer(&adapter->watchdog_timer);
896 adapter->watchdog_timer.function = &netxen_watchdog;
897 adapter->watchdog_timer.data = (unsigned long)adapter;
898 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
899 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
901 err = netxen_read_mac_addr(adapter);
903 dev_warn(&pdev->dev, "failed to read mac addr\n");
905 netif_carrier_off(netdev);
906 netif_stop_queue(netdev);
908 if ((err = register_netdev(netdev))) {
909 printk(KERN_ERR "%s: register_netdev failed port #%d"
910 " aborting\n", netxen_nic_driver_name,
913 goto err_out_disable_msi;
916 pci_set_drvdata(pdev, adapter);
918 switch (adapter->ahw.board_type) {
920 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
921 adapter->netdev->name);
923 case NETXEN_NIC_XGBE:
924 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
925 adapter->netdev->name);
932 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
933 pci_disable_msix(pdev);
934 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
935 pci_disable_msi(pdev);
938 netxen_free_adapter_offload(adapter);
955 pci_release_regions(pdev);
957 err_out_disable_pdev:
958 pci_set_drvdata(pdev, NULL);
959 pci_disable_device(pdev);
963 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
965 struct netxen_adapter *adapter;
966 struct net_device *netdev;
968 adapter = pci_get_drvdata(pdev);
972 netdev = adapter->netdev;
974 unregister_netdev(netdev);
976 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
977 netxen_free_hw_resources(adapter);
978 netxen_release_rx_buffers(adapter);
979 netxen_free_sw_resources(adapter);
982 if (adapter->portnum == 0)
983 netxen_free_adapter_offload(adapter);
986 free_irq(adapter->irq, adapter);
988 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
989 pci_disable_msix(pdev);
990 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
991 pci_disable_msi(pdev);
993 iounmap(adapter->ahw.db_base);
994 iounmap(adapter->ahw.pci_base0);
995 iounmap(adapter->ahw.pci_base1);
996 iounmap(adapter->ahw.pci_base2);
998 pci_release_regions(pdev);
999 pci_disable_device(pdev);
1000 pci_set_drvdata(pdev, NULL);
1002 free_netdev(netdev);
1006 * Called when a network interface is made active
1007 * @returns 0 on success, negative value on failure
1009 static int netxen_nic_open(struct net_device *netdev)
1011 struct netxen_adapter *adapter = netdev_priv(netdev);
1014 irq_handler_t handler;
1015 unsigned long flags = IRQF_SAMPLE_RANDOM;
1017 if (adapter->driver_mismatch)
1020 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1021 err = netxen_init_firmware(adapter);
1023 printk(KERN_ERR "Failed to init firmware\n");
1027 if (adapter->fw_major < 4)
1028 adapter->max_rds_rings = 3;
1030 adapter->max_rds_rings = 2;
1032 err = netxen_alloc_sw_resources(adapter);
1034 printk(KERN_ERR "%s: Error in setting sw resources\n",
1039 netxen_nic_clear_stats(adapter);
1041 err = netxen_alloc_hw_resources(adapter);
1043 printk(KERN_ERR "%s: Error in setting hw resources\n",
1045 goto err_out_free_sw;
1048 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
1049 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
1050 printk(KERN_ERR "%s: Firmware interrupt scheme is "
1051 "incompatible with driver\n",
1053 adapter->driver_mismatch = 1;
1054 goto err_out_free_hw;
1057 if (adapter->fw_major < 4) {
1058 adapter->crb_addr_cmd_producer =
1059 crb_cmd_producer[adapter->portnum];
1060 adapter->crb_addr_cmd_consumer =
1061 crb_cmd_consumer[adapter->portnum];
1063 netxen_nic_update_cmd_producer(adapter, 0);
1064 netxen_nic_update_cmd_consumer(adapter, 0);
1067 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1068 for (ring = 0; ring < adapter->max_rds_rings; ring++)
1069 netxen_post_rx_buffers(adapter, ctx, ring);
1071 if (NETXEN_IS_MSI_FAMILY(adapter))
1072 handler = netxen_msi_intr;
1074 flags |= IRQF_SHARED;
1075 handler = netxen_intr;
1077 adapter->irq = netdev->irq;
1078 err = request_irq(adapter->irq, handler,
1079 flags, netdev->name, adapter);
1081 printk(KERN_ERR "request_irq failed with: %d\n", err);
1082 goto err_out_free_rxbuf;
1085 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1088 /* Done here again so that even if phantom sw overwrote it,
1090 err = adapter->init_port(adapter, adapter->physical_port);
1092 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1093 netxen_nic_driver_name, adapter->portnum);
1094 goto err_out_free_irq;
1096 adapter->macaddr_set(adapter, netdev->dev_addr);
1098 netxen_nic_set_link_parameters(adapter);
1100 netxen_set_multicast_list(netdev);
1101 if (adapter->set_mtu)
1102 adapter->set_mtu(adapter, netdev->mtu);
1104 adapter->ahw.linkup = 0;
1105 mod_timer(&adapter->watchdog_timer, jiffies);
1107 napi_enable(&adapter->napi);
1108 netxen_nic_enable_int(adapter);
1110 netif_start_queue(netdev);
1115 free_irq(adapter->irq, adapter);
1117 netxen_release_rx_buffers(adapter);
1119 netxen_free_hw_resources(adapter);
1121 netxen_free_sw_resources(adapter);
1126 * netxen_nic_close - Disables a network interface entry point
1128 static int netxen_nic_close(struct net_device *netdev)
1130 struct netxen_adapter *adapter = netdev_priv(netdev);
1132 netif_carrier_off(netdev);
1133 netif_stop_queue(netdev);
1134 napi_disable(&adapter->napi);
1136 if (adapter->stop_port)
1137 adapter->stop_port(adapter);
1139 netxen_nic_disable_int(adapter);
1141 netxen_release_tx_buffers(adapter);
1143 FLUSH_SCHEDULED_WORK();
1144 del_timer_sync(&adapter->watchdog_timer);
1149 static bool netxen_tso_check(struct net_device *netdev,
1150 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1153 u8 opcode = TX_ETHER_PKT;
1155 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1156 skb_shinfo(skb)->gso_size > 0) {
1158 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1159 desc->total_hdr_length =
1160 skb_transport_offset(skb) + tcp_hdrlen(skb);
1162 opcode = (skb->protocol == htons(ETH_P_IPV6)) ?
1163 TX_TCP_LSO6 : TX_TCP_LSO;
1166 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1169 if (skb->protocol == htons(ETH_P_IP)) {
1170 l4proto = ip_hdr(skb)->protocol;
1172 if (l4proto == IPPROTO_TCP)
1173 opcode = TX_TCP_PKT;
1174 else if(l4proto == IPPROTO_UDP)
1175 opcode = TX_UDP_PKT;
1176 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1177 l4proto = ipv6_hdr(skb)->nexthdr;
1179 if (l4proto == IPPROTO_TCP)
1180 opcode = TX_TCPV6_PKT;
1181 else if(l4proto == IPPROTO_UDP)
1182 opcode = TX_UDPV6_PKT;
1185 desc->tcp_hdr_offset = skb_transport_offset(skb);
1186 desc->ip_hdr_offset = skb_network_offset(skb);
1187 netxen_set_tx_flags_opcode(desc, 0, opcode);
1191 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1193 struct netxen_adapter *adapter = netdev_priv(netdev);
1194 struct netxen_hardware_context *hw = &adapter->ahw;
1195 unsigned int first_seg_len = skb->len - skb->data_len;
1196 struct netxen_cmd_buffer *pbuf;
1197 struct netxen_skb_frag *buffrag;
1198 struct cmd_desc_type0 *hwdesc;
1201 u32 producer, consumer;
1202 int frag_count, no_of_desc;
1203 u32 num_txd = adapter->max_tx_desc_count;
1204 bool is_tso = false;
1206 frag_count = skb_shinfo(skb)->nr_frags + 1;
1208 /* There 4 fragments per descriptor */
1209 no_of_desc = (frag_count + 3) >> 2;
1211 producer = adapter->cmd_producer;
1213 consumer = adapter->last_cmd_consumer;
1214 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1215 netif_stop_queue(netdev);
1217 return NETDEV_TX_BUSY;
1220 /* Copy the descriptors into the hardware */
1221 hwdesc = &hw->cmd_desc_head[producer];
1222 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1223 /* Take skb->data itself */
1224 pbuf = &adapter->cmd_buf_arr[producer];
1226 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1229 pbuf->frag_count = frag_count;
1230 buffrag = &pbuf->frag_array[0];
1231 buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
1233 buffrag->length = first_seg_len;
1234 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1235 netxen_set_tx_port(hwdesc, adapter->portnum);
1237 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1238 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1240 for (i = 1, k = 1; i < frag_count; i++, k++) {
1241 struct skb_frag_struct *frag;
1243 unsigned long offset;
1244 dma_addr_t temp_dma;
1246 /* move to next desc. if there is a need */
1247 if ((i & 0x3) == 0) {
1249 producer = get_next_index(producer, num_txd);
1250 hwdesc = &hw->cmd_desc_head[producer];
1251 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1252 pbuf = &adapter->cmd_buf_arr[producer];
1255 frag = &skb_shinfo(skb)->frags[i - 1];
1257 offset = frag->page_offset;
1260 temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
1261 len, PCI_DMA_TODEVICE);
1264 buffrag->dma = temp_dma;
1265 buffrag->length = temp_len;
1269 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1270 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1273 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1274 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1277 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1278 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1281 hwdesc->buffer4_length = cpu_to_le16(temp_len);
1282 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1287 producer = get_next_index(producer, num_txd);
1289 /* For LSO, we need to copy the MAC/IP/TCP headers into
1290 * the descriptor ring
1293 int hdr_len, first_hdr_len, more_hdr;
1294 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1295 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1296 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1299 first_hdr_len = hdr_len;
1302 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1303 hwdesc = &hw->cmd_desc_head[producer];
1304 pbuf = &adapter->cmd_buf_arr[producer];
1307 /* copy the first 64 bytes */
1308 memcpy(((void *)hwdesc) + 2,
1309 (void *)(skb->data), first_hdr_len);
1310 producer = get_next_index(producer, num_txd);
1313 hwdesc = &hw->cmd_desc_head[producer];
1314 pbuf = &adapter->cmd_buf_arr[producer];
1316 /* copy the next 64 bytes - should be enough except
1317 * for pathological case
1319 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1323 producer = get_next_index(producer, num_txd);
1327 adapter->cmd_producer = producer;
1328 adapter->stats.txbytes += skb->len;
1330 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
1332 adapter->stats.xmitcalled++;
1333 netdev->trans_start = jiffies;
1335 return NETDEV_TX_OK;
1338 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1340 struct net_device *netdev = adapter->netdev;
1341 uint32_t temp, temp_state, temp_val;
1344 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1346 temp_state = nx_get_temp_state(temp);
1347 temp_val = nx_get_temp_val(temp);
1349 if (temp_state == NX_TEMP_PANIC) {
1351 "%s: Device temperature %d degrees C exceeds"
1352 " maximum allowed. Hardware has been shut down.\n",
1353 netxen_nic_driver_name, temp_val);
1355 netif_carrier_off(netdev);
1356 netif_stop_queue(netdev);
1358 } else if (temp_state == NX_TEMP_WARN) {
1359 if (adapter->temp == NX_TEMP_NORMAL) {
1361 "%s: Device temperature %d degrees C "
1362 "exceeds operating range."
1363 " Immediate action needed.\n",
1364 netxen_nic_driver_name, temp_val);
1367 if (adapter->temp == NX_TEMP_WARN) {
1369 "%s: Device temperature is now %d degrees C"
1370 " in normal range.\n", netxen_nic_driver_name,
1374 adapter->temp = temp_state;
1378 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1380 struct net_device *netdev = adapter->netdev;
1381 u32 val, port, linkup;
1383 port = adapter->physical_port;
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);
1390 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1391 if (adapter->ahw.board_type == NETXEN_NIC_GBE)
1392 linkup = (val >> port) & 1;
1394 val = (val >> port*8) & 0xff;
1395 linkup = (val == XG_LINK_UP);
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);
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);
1418 netxen_nic_set_link_parameters(adapter);
1422 static void netxen_watchdog(unsigned long v)
1424 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1426 SCHEDULE_WORK(&adapter->watchdog_task);
1429 void netxen_watchdog_task(struct work_struct *work)
1431 struct netxen_adapter *adapter =
1432 container_of(work, struct netxen_adapter, watchdog_task);
1434 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1437 netxen_nic_handle_phy_intr(adapter);
1439 if (netif_running(adapter->netdev))
1440 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1443 static void netxen_tx_timeout(struct net_device *netdev)
1445 struct netxen_adapter *adapter = (struct netxen_adapter *)
1446 netdev_priv(netdev);
1447 SCHEDULE_WORK(&adapter->tx_timeout_task);
1450 static void netxen_tx_timeout_task(struct work_struct *work)
1452 struct netxen_adapter *adapter =
1453 container_of(work, struct netxen_adapter, tx_timeout_task);
1455 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1456 netxen_nic_driver_name, adapter->netdev->name);
1458 netxen_nic_disable_int(adapter);
1459 napi_disable(&adapter->napi);
1461 adapter->netdev->trans_start = jiffies;
1463 napi_enable(&adapter->napi);
1464 netxen_nic_enable_int(adapter);
1465 netif_wake_queue(adapter->netdev);
1469 * netxen_nic_get_stats - Get System Network Statistics
1470 * @netdev: network interface device structure
1472 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1474 struct netxen_adapter *adapter = netdev_priv(netdev);
1475 struct net_device_stats *stats = &adapter->net_stats;
1477 memset(stats, 0, sizeof(*stats));
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;
1500 static irqreturn_t netxen_intr(int irq, void *data)
1502 struct netxen_adapter *adapter = data;
1505 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1507 if (!(status & adapter->legacy_intr.int_vec_bit))
1510 if (adapter->ahw.revision_id >= NX_P3_B1) {
1511 /* check interrupt state machine, to be sure */
1512 status = adapter->pci_read_immediate(adapter,
1514 if (!ISR_LEGACY_INT_TRIGGERED(status))
1518 unsigned long our_int = 0;
1520 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
1522 /* not our interrupt */
1523 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1526 /* claim interrupt */
1527 adapter->pci_write_normalize(adapter,
1528 CRB_INT_VECTOR, (our_int & 0xffffffff));
1531 /* clear interrupt */
1532 if (adapter->fw_major < 4)
1533 netxen_nic_disable_int(adapter);
1535 adapter->pci_write_immediate(adapter,
1536 adapter->legacy_intr.tgt_status_reg,
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);
1542 napi_schedule(&adapter->napi);
1547 static irqreturn_t netxen_msi_intr(int irq, void *data)
1549 struct netxen_adapter *adapter = data;
1551 /* clear interrupt */
1552 adapter->pci_write_immediate(adapter,
1553 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1555 napi_schedule(&adapter->napi);
1559 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1561 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
1566 tx_complete = netxen_process_cmd_ring(adapter);
1569 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1571 * Fairness issue. This will give undue weight to the
1572 * receive context 0.
1576 * To avoid starvation, we give each of our receivers,
1577 * a fraction of the quota. Sometimes, it might happen that we
1578 * have enough quota to process every packet, but since all the
1579 * packets are on one context, it gets only half of the quota,
1580 * and ends up not processing it.
1582 work_done += netxen_process_rcv_ring(adapter, ctx,
1583 budget / MAX_RCV_CTX);
1586 if ((work_done < budget) && tx_complete) {
1587 netif_rx_complete(&adapter->napi);
1588 netxen_nic_enable_int(adapter);
1594 #ifdef CONFIG_NET_POLL_CONTROLLER
1595 static void netxen_nic_poll_controller(struct net_device *netdev)
1597 struct netxen_adapter *adapter = netdev_priv(netdev);
1598 disable_irq(adapter->irq);
1599 netxen_intr(adapter->irq, adapter);
1600 enable_irq(adapter->irq);
1604 static struct pci_driver netxen_driver = {
1605 .name = netxen_nic_driver_name,
1606 .id_table = netxen_pci_tbl,
1607 .probe = netxen_nic_probe,
1608 .remove = __devexit_p(netxen_nic_remove)
1611 /* Driver Registration on NetXen card */
1613 static int __init netxen_init_module(void)
1615 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1618 return pci_register_driver(&netxen_driver);
1621 module_init(netxen_init_module);
1623 static void __exit netxen_exit_module(void)
1625 pci_unregister_driver(&netxen_driver);
1626 destroy_workqueue(netxen_workq);
1629 module_exit(netxen_exit_module);