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>
44 #include <linux/ipv6.h>
46 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
47 MODULE_LICENSE("GPL");
48 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
50 char netxen_nic_driver_name[] = "netxen_nic";
51 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
52 NETXEN_NIC_LINUX_VERSIONID;
54 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
56 /* Default to restricted 1G auto-neg mode */
57 static int wol_port_mode = 5;
59 static int use_msi = 1;
61 static int use_msi_x = 1;
63 /* Local functions to NetXen NIC driver */
64 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
65 const struct pci_device_id *ent);
66 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
67 static int netxen_nic_open(struct net_device *netdev);
68 static int netxen_nic_close(struct net_device *netdev);
69 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
70 static void netxen_tx_timeout(struct net_device *netdev);
71 static void netxen_tx_timeout_task(struct work_struct *work);
72 static void netxen_watchdog(unsigned long);
73 static int netxen_nic_poll(struct napi_struct *napi, int budget);
74 #ifdef CONFIG_NET_POLL_CONTROLLER
75 static void netxen_nic_poll_controller(struct net_device *netdev);
77 static irqreturn_t netxen_intr(int irq, void *data);
78 static irqreturn_t netxen_msi_intr(int irq, void *data);
79 static irqreturn_t netxen_msix_intr(int irq, void *data);
81 /* PCI Device ID Table */
82 #define ENTRY(device) \
83 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
84 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
86 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
87 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
88 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
89 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
90 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
91 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
92 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
93 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
94 ENTRY(PCI_DEVICE_ID_NX3031),
98 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
101 * In netxen_nic_down(), we must wait for any pending callback requests into
102 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
103 * reenabled right after it is deleted in netxen_nic_down().
104 * FLUSH_SCHEDULED_WORK() does this synchronization.
106 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
107 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
108 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
109 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
110 * linkwatch_event() to be executed which also attempts to acquire the rtnl
111 * lock thus causing a deadlock.
114 static struct workqueue_struct *netxen_workq;
115 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
116 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
118 static void netxen_watchdog(unsigned long);
120 static uint32_t crb_cmd_producer[4] = {
121 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
122 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
126 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
127 uint32_t crb_producer)
129 adapter->pci_write_normalize(adapter,
130 adapter->crb_addr_cmd_producer, crb_producer);
133 static uint32_t crb_cmd_consumer[4] = {
134 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
135 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
139 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
142 adapter->pci_write_normalize(adapter,
143 adapter->crb_addr_cmd_consumer, crb_consumer);
146 static uint32_t msi_tgt_status[8] = {
147 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
148 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
149 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
150 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
153 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
155 static inline void netxen_nic_disable_int(struct netxen_adapter *adapter)
157 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0);
160 static inline void netxen_nic_enable_int(struct netxen_adapter *adapter)
162 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1);
164 if (!NETXEN_IS_MSI_FAMILY(adapter))
165 adapter->pci_write_immediate(adapter,
166 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
169 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
171 struct pci_dev *pdev = adapter->pdev;
176 adapter->dma_mask = DMA_32BIT_MASK;
178 if (revision_id >= NX_P3_B0) {
179 /* should go to DMA_64BIT_MASK */
180 adapter->dma_mask = DMA_39BIT_MASK;
181 mask = DMA_39BIT_MASK;
182 } else if (revision_id == NX_P3_A2) {
183 adapter->dma_mask = DMA_39BIT_MASK;
184 mask = DMA_39BIT_MASK;
185 } else if (revision_id == NX_P2_C1) {
186 adapter->dma_mask = DMA_35BIT_MASK;
187 mask = DMA_35BIT_MASK;
189 adapter->dma_mask = DMA_32BIT_MASK;
190 mask = DMA_32BIT_MASK;
191 goto set_32_bit_mask;
195 * Consistent DMA mask is set to 32 bit because it cannot be set to
196 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
197 * come off this pool.
199 if (pci_set_dma_mask(pdev, mask) == 0 &&
200 pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) == 0) {
201 adapter->pci_using_dac = 1;
205 #endif /* CONFIG_IA64 */
207 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
209 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
211 DPRINTK(ERR, "No usable DMA configuration, aborting:%d\n", err);
215 adapter->pci_using_dac = 0;
219 static void netxen_check_options(struct netxen_adapter *adapter)
221 switch (adapter->ahw.boardcfg.board_type) {
222 case NETXEN_BRDTYPE_P3_HMEZ:
223 case NETXEN_BRDTYPE_P3_XG_LOM:
224 case NETXEN_BRDTYPE_P3_10G_CX4:
225 case NETXEN_BRDTYPE_P3_10G_CX4_LP:
226 case NETXEN_BRDTYPE_P3_IMEZ:
227 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS:
228 case NETXEN_BRDTYPE_P3_10G_SFP_QT:
229 case NETXEN_BRDTYPE_P3_10G_SFP_CT:
230 case NETXEN_BRDTYPE_P3_10G_XFP:
231 case NETXEN_BRDTYPE_P3_10000_BASE_T:
232 adapter->msix_supported = !!use_msi_x;
233 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
236 case NETXEN_BRDTYPE_P2_SB31_10G:
237 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
238 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
239 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
240 adapter->msix_supported = 0;
241 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
244 case NETXEN_BRDTYPE_P3_REF_QG:
245 case NETXEN_BRDTYPE_P3_4_GB:
246 case NETXEN_BRDTYPE_P3_4_GB_MM:
247 adapter->msix_supported = !!use_msi_x;
248 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
251 case NETXEN_BRDTYPE_P2_SB35_4G:
252 case NETXEN_BRDTYPE_P2_SB31_2G:
253 adapter->msix_supported = 0;
254 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
257 case NETXEN_BRDTYPE_P3_10G_TP:
258 adapter->msix_supported = !!use_msi_x;
259 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
260 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
262 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
266 adapter->msix_supported = 0;
267 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
269 printk(KERN_WARNING "Unknown board type(0x%x)\n",
270 adapter->ahw.boardcfg.board_type);
274 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
275 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
276 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
278 adapter->max_possible_rss_rings = 1;
283 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
287 if (first_boot == 0x55555555) {
288 /* This is the first boot after power up */
289 adapter->pci_write_normalize(adapter,
290 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
292 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
295 /* PCI bus master workaround */
296 adapter->hw_read_wx(adapter,
297 NETXEN_PCIE_REG(0x4), &first_boot, 4);
298 if (!(first_boot & 0x4)) {
300 adapter->hw_write_wx(adapter,
301 NETXEN_PCIE_REG(0x4), &first_boot, 4);
302 adapter->hw_read_wx(adapter,
303 NETXEN_PCIE_REG(0x4), &first_boot, 4);
306 /* This is the first boot after power up */
307 adapter->hw_read_wx(adapter,
308 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
309 if (first_boot != 0x80000f) {
310 /* clear the register for future unloads/loads */
311 adapter->pci_write_normalize(adapter,
312 NETXEN_CAM_RAM(0x1fc), 0);
316 /* Start P2 boot loader */
317 val = adapter->pci_read_normalize(adapter,
318 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
319 adapter->pci_write_normalize(adapter,
320 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
324 val = adapter->pci_read_normalize(adapter,
325 NETXEN_CAM_RAM(0x1fc));
327 if (++timeout > 5000)
330 } while (val == NETXEN_BDINFO_MAGIC);
335 static void netxen_set_port_mode(struct netxen_adapter *adapter)
339 val = adapter->ahw.boardcfg.board_type;
340 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
341 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
342 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
343 data = NETXEN_PORT_MODE_802_3_AP;
344 adapter->hw_write_wx(adapter,
345 NETXEN_PORT_MODE_ADDR, &data, 4);
346 } else if (port_mode == NETXEN_PORT_MODE_XG) {
347 data = NETXEN_PORT_MODE_XG;
348 adapter->hw_write_wx(adapter,
349 NETXEN_PORT_MODE_ADDR, &data, 4);
350 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
351 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
352 adapter->hw_write_wx(adapter,
353 NETXEN_PORT_MODE_ADDR, &data, 4);
354 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
355 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
356 adapter->hw_write_wx(adapter,
357 NETXEN_PORT_MODE_ADDR, &data, 4);
359 data = NETXEN_PORT_MODE_AUTO_NEG;
360 adapter->hw_write_wx(adapter,
361 NETXEN_PORT_MODE_ADDR, &data, 4);
364 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
365 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
366 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
367 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
368 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
370 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
375 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
380 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
382 pci_read_config_dword(pdev, pos, &control);
384 control |= PCI_MSIX_FLAGS_ENABLE;
387 pci_write_config_dword(pdev, pos, control);
391 static void netxen_init_msix_entries(struct netxen_adapter *adapter)
395 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
396 adapter->msix_entries[i].entry = i;
400 netxen_read_mac_addr(struct netxen_adapter *adapter)
405 struct net_device *netdev = adapter->netdev;
406 struct pci_dev *pdev = adapter->pdev;
408 if (netxen_is_flash_supported(adapter) != 0)
411 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
412 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
415 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
419 p = (unsigned char *)&mac_addr;
420 for (i = 0; i < 6; i++)
421 netdev->dev_addr[i] = *(p + 5 - i);
423 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
425 /* set station address */
427 if (!is_valid_ether_addr(netdev->perm_addr))
428 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
430 adapter->macaddr_set(adapter, netdev->dev_addr);
435 static void netxen_set_multicast_list(struct net_device *dev)
437 struct netxen_adapter *adapter = netdev_priv(dev);
439 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
440 netxen_p3_nic_set_multi(dev);
442 netxen_p2_nic_set_multi(dev);
445 static const struct net_device_ops netxen_netdev_ops = {
446 .ndo_open = netxen_nic_open,
447 .ndo_stop = netxen_nic_close,
448 .ndo_start_xmit = netxen_nic_xmit_frame,
449 .ndo_get_stats = netxen_nic_get_stats,
450 .ndo_validate_addr = eth_validate_addr,
451 .ndo_set_multicast_list = netxen_set_multicast_list,
452 .ndo_set_mac_address = netxen_nic_set_mac,
453 .ndo_change_mtu = netxen_nic_change_mtu,
454 .ndo_tx_timeout = netxen_tx_timeout,
455 #ifdef CONFIG_NET_POLL_CONTROLLER
456 .ndo_poll_controller = netxen_nic_poll_controller,
463 * The Linux system will invoke this after identifying the vendor ID and
464 * device Id in the pci_tbl supported by this module.
466 * A quad port card has one operational PCI config space, (function 0),
467 * which is used to access all four ports.
469 * This routine will initialize the adapter, and setup the global parameters
470 * along with the port's specific structure.
473 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
475 struct net_device *netdev = NULL;
476 struct netxen_adapter *adapter = NULL;
477 void __iomem *mem_ptr0 = NULL;
478 void __iomem *mem_ptr1 = NULL;
479 void __iomem *mem_ptr2 = NULL;
480 unsigned long first_page_group_end;
481 unsigned long first_page_group_start;
484 u8 __iomem *db_ptr = NULL;
485 unsigned long mem_base, mem_len, db_base, db_len, pci_len0 = 0;
487 int first_driver, first_boot;
489 int pci_func_id = PCI_FUNC(pdev->devfn);
490 struct netxen_legacy_intr_set *legacy_intrp;
493 if (pci_func_id == 0)
494 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
496 if (pdev->class != 0x020000) {
497 printk(KERN_DEBUG "NetXen function %d, class %x will not "
498 "be enabled.\n",pci_func_id, pdev->class);
502 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
503 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
504 "will not be enabled.\n",
509 if ((err = pci_enable_device(pdev)))
512 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
514 goto err_out_disable_pdev;
517 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
518 goto err_out_disable_pdev;
520 pci_set_master(pdev);
522 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
524 printk(KERN_ERR"%s: Failed to allocate memory for the "
525 "device block.Check system memory resource"
526 " usage.\n", netxen_nic_driver_name);
527 goto err_out_free_res;
530 SET_NETDEV_DEV(netdev, &pdev->dev);
532 adapter = netdev_priv(netdev);
533 adapter->netdev = netdev;
534 adapter->pdev = pdev;
535 adapter->ahw.pci_func = pci_func_id;
537 revision_id = pdev->revision;
538 adapter->ahw.revision_id = revision_id;
540 err = nx_set_dma_mask(adapter, revision_id);
542 goto err_out_free_netdev;
544 rwlock_init(&adapter->adapter_lock);
545 adapter->ahw.qdr_sn_window = -1;
546 adapter->ahw.ddr_mn_window = -1;
548 /* remap phys address */
549 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
550 mem_len = pci_resource_len(pdev, 0);
553 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
554 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
555 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
556 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
557 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
558 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
559 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
560 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
561 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
563 /* 128 Meg of memory */
564 if (mem_len == NETXEN_PCI_128MB_SIZE) {
565 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
566 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
567 SECOND_PAGE_GROUP_SIZE);
568 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
569 THIRD_PAGE_GROUP_SIZE);
570 first_page_group_start = FIRST_PAGE_GROUP_START;
571 first_page_group_end = FIRST_PAGE_GROUP_END;
572 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
573 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
574 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
575 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
576 first_page_group_start = 0;
577 first_page_group_end = 0;
578 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
579 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
580 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
581 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
582 adapter->pci_write_immediate =
583 netxen_nic_pci_write_immediate_2M;
584 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
585 adapter->pci_write_normalize =
586 netxen_nic_pci_write_normalize_2M;
587 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
588 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
589 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
591 mem_ptr0 = ioremap(mem_base, mem_len);
593 first_page_group_start = 0;
594 first_page_group_end = 0;
596 adapter->ahw.ddr_mn_window = 0;
597 adapter->ahw.qdr_sn_window = 0;
599 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
600 (pci_func_id * 0x20);
601 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
603 adapter->ahw.ms_win_crb += (pci_func_id * 0x20);
605 adapter->ahw.ms_win_crb +=
606 0xA0 + ((pci_func_id - 4) * 0x10);
609 goto err_out_free_netdev;
612 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
614 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
615 db_len = pci_resource_len(pdev, 4);
618 printk(KERN_ERR "%s: doorbell is disabled\n",
619 netxen_nic_driver_name);
621 goto err_out_iounmap;
623 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
626 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
628 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
629 netxen_nic_driver_name);
631 goto err_out_iounmap;
633 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
635 adapter->ahw.pci_base0 = mem_ptr0;
636 adapter->ahw.pci_len0 = pci_len0;
637 adapter->ahw.first_page_group_start = first_page_group_start;
638 adapter->ahw.first_page_group_end = first_page_group_end;
639 adapter->ahw.pci_base1 = mem_ptr1;
640 adapter->ahw.pci_base2 = mem_ptr2;
641 adapter->ahw.db_base = db_ptr;
642 adapter->ahw.db_len = db_len;
644 netif_napi_add(netdev, &adapter->napi,
645 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
647 if (revision_id >= NX_P3_B0)
648 legacy_intrp = &legacy_intr[pci_func_id];
650 legacy_intrp = &legacy_intr[0];
652 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
653 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
654 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
655 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
657 /* this will be read from FW later */
658 adapter->intr_scheme = -1;
659 adapter->msi_mode = -1;
661 /* This will be reset for mezz cards */
662 adapter->portnum = pci_func_id;
663 adapter->status &= ~NETXEN_NETDEV_STATUS;
664 adapter->rx_csum = 1;
665 adapter->mc_enabled = 0;
666 if (NX_IS_REVISION_P3(revision_id))
667 adapter->max_mc_count = 38;
669 adapter->max_mc_count = 16;
671 netdev->netdev_ops = &netxen_netdev_ops;
672 netdev->watchdog_timeo = 2*HZ;
674 netxen_nic_change_mtu(netdev, netdev->mtu);
676 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
678 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
679 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
681 if (NX_IS_REVISION_P3(revision_id)) {
682 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
683 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
686 if (adapter->pci_using_dac) {
687 netdev->features |= NETIF_F_HIGHDMA;
688 netdev->vlan_features |= NETIF_F_HIGHDMA;
692 * Set the CRB window to invalid. If any register in window 0 is
693 * accessed it should set the window to 0 and then reset it to 1.
695 adapter->curr_window = 255;
697 if (netxen_nic_get_board_info(adapter) != 0) {
698 printk("%s: Error getting board config info.\n",
699 netxen_nic_driver_name);
701 goto err_out_iounmap;
704 netxen_initialize_adapter_ops(adapter);
706 /* Mezz cards have PCI function 0,2,3 enabled */
707 switch (adapter->ahw.boardcfg.board_type) {
708 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
709 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
710 if (pci_func_id >= 2)
711 adapter->portnum = pci_func_id - 2;
718 * This call will setup various max rx/tx counts.
719 * It must be done before any buffer/ring allocations.
721 netxen_check_options(adapter);
724 if (NX_IS_REVISION_P3(revision_id)) {
725 if (adapter->ahw.pci_func == 0)
728 if (adapter->portnum == 0)
733 first_boot = adapter->pci_read_normalize(adapter,
734 NETXEN_CAM_RAM(0x1fc));
736 err = netxen_check_hw_init(adapter, first_boot);
738 printk(KERN_ERR "%s: error in init HW init sequence\n",
739 netxen_nic_driver_name);
740 goto err_out_iounmap;
743 if (NX_IS_REVISION_P3(revision_id))
744 netxen_set_port_mode(adapter);
746 if (first_boot != 0x55555555) {
747 adapter->pci_write_normalize(adapter,
748 CRB_CMDPEG_STATE, 0);
749 netxen_pinit_from_rom(adapter, 0);
752 netxen_load_firmware(adapter);
754 if (NX_IS_REVISION_P2(revision_id)) {
756 /* Initialize multicast addr pool owners */
758 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
760 netxen_crb_writelit_adapter(adapter,
761 NETXEN_MAC_ADDR_CNTL_REG, val);
765 err = netxen_initialize_adapter_offload(adapter);
767 goto err_out_iounmap;
770 * Tell the hardware our version number.
772 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
773 | ((_NETXEN_NIC_LINUX_MINOR << 8))
774 | (_NETXEN_NIC_LINUX_SUBVERSION);
775 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i);
777 /* Handshake with the card before we register the devices. */
778 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
780 goto err_out_free_offload;
784 netxen_nic_flash_print(adapter);
786 if (NX_IS_REVISION_P3(revision_id)) {
787 adapter->hw_read_wx(adapter,
788 NETXEN_MIU_MN_CONTROL, &val, 4);
789 adapter->ahw.cut_through = (val & 0x4) ? 1 : 0;
790 dev_info(&pdev->dev, "firmware running in %s mode\n",
791 adapter->ahw.cut_through ? "cut through" : "legacy");
795 * See if the firmware gave us a virtual-physical port mapping.
797 adapter->physical_port = adapter->portnum;
798 i = adapter->pci_read_normalize(adapter, CRB_V2P(adapter->portnum));
800 adapter->physical_port = i;
802 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
804 netxen_set_msix_bit(pdev, 0);
806 if (NX_IS_REVISION_P3(revision_id)) {
807 if ((mem_len != NETXEN_PCI_128MB_SIZE) &&
808 mem_len != NETXEN_PCI_2MB_SIZE)
809 adapter->msix_supported = 0;
812 if (adapter->msix_supported) {
814 netxen_init_msix_entries(adapter);
816 if (pci_enable_msix(pdev, adapter->msix_entries,
817 MSIX_ENTRIES_PER_ADAPTER))
820 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
821 netxen_set_msix_bit(pdev, 1);
822 dev_info(&pdev->dev, "using msi-x interrupts\n");
826 if (use_msi && !pci_enable_msi(pdev)) {
827 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
828 dev_info(&pdev->dev, "using msi interrupts\n");
830 dev_info(&pdev->dev, "using legacy interrupts\n");
833 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
834 netdev->irq = adapter->msix_entries[0].vector;
836 netdev->irq = pdev->irq;
838 err = netxen_receive_peg_ready(adapter);
840 goto err_out_disable_msi;
842 init_timer(&adapter->watchdog_timer);
843 adapter->watchdog_timer.function = &netxen_watchdog;
844 adapter->watchdog_timer.data = (unsigned long)adapter;
845 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
846 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
848 err = netxen_read_mac_addr(adapter);
850 dev_warn(&pdev->dev, "failed to read mac addr\n");
852 netif_carrier_off(netdev);
853 netif_stop_queue(netdev);
855 if ((err = register_netdev(netdev))) {
856 printk(KERN_ERR "%s: register_netdev failed port #%d"
857 " aborting\n", netxen_nic_driver_name,
860 goto err_out_disable_msi;
863 pci_set_drvdata(pdev, adapter);
865 switch (adapter->ahw.board_type) {
867 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
868 adapter->netdev->name);
870 case NETXEN_NIC_XGBE:
871 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
872 adapter->netdev->name);
879 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
880 pci_disable_msix(pdev);
881 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
882 pci_disable_msi(pdev);
884 err_out_free_offload:
886 netxen_free_adapter_offload(adapter);
903 pci_release_regions(pdev);
905 err_out_disable_pdev:
906 pci_set_drvdata(pdev, NULL);
907 pci_disable_device(pdev);
911 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
913 struct netxen_adapter *adapter;
914 struct net_device *netdev;
916 adapter = pci_get_drvdata(pdev);
920 netdev = adapter->netdev;
922 unregister_netdev(netdev);
924 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
925 netxen_free_hw_resources(adapter);
926 netxen_release_rx_buffers(adapter);
927 netxen_free_sw_resources(adapter);
929 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
930 netxen_p3_free_mac_list(adapter);
933 if (adapter->portnum == 0)
934 netxen_free_adapter_offload(adapter);
937 free_irq(adapter->irq, adapter);
939 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
940 pci_disable_msix(pdev);
941 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
942 pci_disable_msi(pdev);
944 iounmap(adapter->ahw.db_base);
945 iounmap(adapter->ahw.pci_base0);
946 if (adapter->ahw.pci_base1 != NULL)
947 iounmap(adapter->ahw.pci_base1);
948 if (adapter->ahw.pci_base2 != NULL)
949 iounmap(adapter->ahw.pci_base2);
951 pci_release_regions(pdev);
952 pci_disable_device(pdev);
953 pci_set_drvdata(pdev, NULL);
959 * Called when a network interface is made active
960 * @returns 0 on success, negative value on failure
962 static int netxen_nic_open(struct net_device *netdev)
964 struct netxen_adapter *adapter = netdev_priv(netdev);
967 irq_handler_t handler;
968 unsigned long flags = IRQF_SAMPLE_RANDOM;
970 if (adapter->driver_mismatch)
973 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
974 err = netxen_init_firmware(adapter);
976 printk(KERN_ERR "Failed to init firmware\n");
980 if (adapter->fw_major < 4)
981 adapter->max_rds_rings = 3;
983 adapter->max_rds_rings = 2;
985 err = netxen_alloc_sw_resources(adapter);
987 printk(KERN_ERR "%s: Error in setting sw resources\n",
992 netxen_nic_clear_stats(adapter);
994 err = netxen_alloc_hw_resources(adapter);
996 printk(KERN_ERR "%s: Error in setting hw resources\n",
998 goto err_out_free_sw;
1001 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
1002 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
1003 printk(KERN_ERR "%s: Firmware interrupt scheme is "
1004 "incompatible with driver\n",
1006 adapter->driver_mismatch = 1;
1007 goto err_out_free_hw;
1010 if (adapter->fw_major < 4) {
1011 adapter->crb_addr_cmd_producer =
1012 crb_cmd_producer[adapter->portnum];
1013 adapter->crb_addr_cmd_consumer =
1014 crb_cmd_consumer[adapter->portnum];
1016 netxen_nic_update_cmd_producer(adapter, 0);
1017 netxen_nic_update_cmd_consumer(adapter, 0);
1020 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1021 for (ring = 0; ring < adapter->max_rds_rings; ring++)
1022 netxen_post_rx_buffers(adapter, ctx, ring);
1024 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1025 handler = netxen_msix_intr;
1026 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1027 handler = netxen_msi_intr;
1029 flags |= IRQF_SHARED;
1030 handler = netxen_intr;
1032 adapter->irq = netdev->irq;
1033 err = request_irq(adapter->irq, handler,
1034 flags, netdev->name, adapter);
1036 printk(KERN_ERR "request_irq failed with: %d\n", err);
1037 goto err_out_free_rxbuf;
1040 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1043 /* Done here again so that even if phantom sw overwrote it,
1045 err = adapter->init_port(adapter, adapter->physical_port);
1047 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1048 netxen_nic_driver_name, adapter->portnum);
1049 goto err_out_free_irq;
1051 adapter->macaddr_set(adapter, netdev->dev_addr);
1053 netxen_nic_set_link_parameters(adapter);
1055 netxen_set_multicast_list(netdev);
1056 if (adapter->set_mtu)
1057 adapter->set_mtu(adapter, netdev->mtu);
1059 adapter->ahw.linkup = 0;
1060 mod_timer(&adapter->watchdog_timer, jiffies);
1062 napi_enable(&adapter->napi);
1063 netxen_nic_enable_int(adapter);
1065 netif_start_queue(netdev);
1070 free_irq(adapter->irq, adapter);
1072 netxen_release_rx_buffers(adapter);
1074 netxen_free_hw_resources(adapter);
1076 netxen_free_sw_resources(adapter);
1081 * netxen_nic_close - Disables a network interface entry point
1083 static int netxen_nic_close(struct net_device *netdev)
1085 struct netxen_adapter *adapter = netdev_priv(netdev);
1087 netif_carrier_off(netdev);
1088 netif_stop_queue(netdev);
1089 napi_disable(&adapter->napi);
1091 if (adapter->stop_port)
1092 adapter->stop_port(adapter);
1094 netxen_nic_disable_int(adapter);
1096 netxen_release_tx_buffers(adapter);
1098 FLUSH_SCHEDULED_WORK();
1099 del_timer_sync(&adapter->watchdog_timer);
1104 static bool netxen_tso_check(struct net_device *netdev,
1105 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1108 u8 opcode = TX_ETHER_PKT;
1109 __be16 protocol = skb->protocol;
1112 if (protocol == __constant_htons(ETH_P_8021Q)) {
1113 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1114 protocol = vh->h_vlan_encapsulated_proto;
1115 flags = FLAGS_VLAN_TAGGED;
1118 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1119 skb_shinfo(skb)->gso_size > 0) {
1121 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1122 desc->total_hdr_length =
1123 skb_transport_offset(skb) + tcp_hdrlen(skb);
1125 opcode = (protocol == __constant_htons(ETH_P_IPV6)) ?
1126 TX_TCP_LSO6 : TX_TCP_LSO;
1129 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1132 if (protocol == __constant_htons(ETH_P_IP)) {
1133 l4proto = ip_hdr(skb)->protocol;
1135 if (l4proto == IPPROTO_TCP)
1136 opcode = TX_TCP_PKT;
1137 else if(l4proto == IPPROTO_UDP)
1138 opcode = TX_UDP_PKT;
1139 } else if (protocol == __constant_htons(ETH_P_IPV6)) {
1140 l4proto = ipv6_hdr(skb)->nexthdr;
1142 if (l4proto == IPPROTO_TCP)
1143 opcode = TX_TCPV6_PKT;
1144 else if(l4proto == IPPROTO_UDP)
1145 opcode = TX_UDPV6_PKT;
1148 desc->tcp_hdr_offset = skb_transport_offset(skb);
1149 desc->ip_hdr_offset = skb_network_offset(skb);
1150 netxen_set_tx_flags_opcode(desc, flags, opcode);
1155 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1156 struct netxen_cmd_buffer *pbuf, int last)
1159 struct netxen_skb_frag *buffrag;
1161 buffrag = &pbuf->frag_array[0];
1162 pci_unmap_single(pdev, buffrag->dma,
1163 buffrag->length, PCI_DMA_TODEVICE);
1165 for (k = 1; k < last; k++) {
1166 buffrag = &pbuf->frag_array[k];
1167 pci_unmap_page(pdev, buffrag->dma,
1168 buffrag->length, PCI_DMA_TODEVICE);
1172 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1174 struct netxen_adapter *adapter = netdev_priv(netdev);
1175 struct netxen_hardware_context *hw = &adapter->ahw;
1176 unsigned int first_seg_len = skb->len - skb->data_len;
1177 struct netxen_cmd_buffer *pbuf;
1178 struct netxen_skb_frag *buffrag;
1179 struct cmd_desc_type0 *hwdesc;
1180 struct pci_dev *pdev = adapter->pdev;
1181 dma_addr_t temp_dma;
1184 u32 producer, consumer;
1185 int frag_count, no_of_desc;
1186 u32 num_txd = adapter->max_tx_desc_count;
1187 bool is_tso = false;
1189 frag_count = skb_shinfo(skb)->nr_frags + 1;
1191 /* There 4 fragments per descriptor */
1192 no_of_desc = (frag_count + 3) >> 2;
1194 producer = adapter->cmd_producer;
1196 consumer = adapter->last_cmd_consumer;
1197 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1198 netif_stop_queue(netdev);
1200 return NETDEV_TX_BUSY;
1203 /* Copy the descriptors into the hardware */
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];
1209 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1212 pbuf->frag_count = frag_count;
1213 buffrag = &pbuf->frag_array[0];
1214 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1216 if (pci_dma_mapping_error(pdev, temp_dma))
1219 buffrag->dma = temp_dma;
1220 buffrag->length = first_seg_len;
1221 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1222 netxen_set_tx_port(hwdesc, adapter->portnum);
1224 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1225 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1227 for (i = 1, k = 1; i < frag_count; i++, k++) {
1228 struct skb_frag_struct *frag;
1230 unsigned long offset;
1232 /* move to next desc. if there is a need */
1233 if ((i & 0x3) == 0) {
1235 producer = get_next_index(producer, num_txd);
1236 hwdesc = &hw->cmd_desc_head[producer];
1237 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1238 pbuf = &adapter->cmd_buf_arr[producer];
1241 frag = &skb_shinfo(skb)->frags[i - 1];
1243 offset = frag->page_offset;
1246 temp_dma = pci_map_page(pdev, frag->page, offset,
1247 len, PCI_DMA_TODEVICE);
1248 if (pci_dma_mapping_error(pdev, temp_dma)) {
1249 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1254 buffrag->dma = temp_dma;
1255 buffrag->length = temp_len;
1259 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1260 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1263 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1264 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1267 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1268 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1271 hwdesc->buffer4_length = cpu_to_le16(temp_len);
1272 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1277 producer = get_next_index(producer, num_txd);
1279 /* For LSO, we need to copy the MAC/IP/TCP headers into
1280 * the descriptor ring
1283 int hdr_len, first_hdr_len, more_hdr;
1284 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1285 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1286 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1289 first_hdr_len = hdr_len;
1292 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1293 hwdesc = &hw->cmd_desc_head[producer];
1294 pbuf = &adapter->cmd_buf_arr[producer];
1297 /* copy the first 64 bytes */
1298 memcpy(((void *)hwdesc) + 2,
1299 (void *)(skb->data), first_hdr_len);
1300 producer = get_next_index(producer, num_txd);
1303 hwdesc = &hw->cmd_desc_head[producer];
1304 pbuf = &adapter->cmd_buf_arr[producer];
1306 /* copy the next 64 bytes - should be enough except
1307 * for pathological case
1309 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1313 producer = get_next_index(producer, num_txd);
1317 adapter->cmd_producer = producer;
1318 adapter->stats.txbytes += skb->len;
1320 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
1322 adapter->stats.xmitcalled++;
1323 netdev->trans_start = jiffies;
1325 return NETDEV_TX_OK;
1328 adapter->stats.txdropped++;
1329 dev_kfree_skb_any(skb);
1330 return NETDEV_TX_OK;
1333 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1335 struct net_device *netdev = adapter->netdev;
1336 uint32_t temp, temp_state, temp_val;
1339 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1341 temp_state = nx_get_temp_state(temp);
1342 temp_val = nx_get_temp_val(temp);
1344 if (temp_state == NX_TEMP_PANIC) {
1346 "%s: Device temperature %d degrees C exceeds"
1347 " maximum allowed. Hardware has been shut down.\n",
1348 netxen_nic_driver_name, temp_val);
1350 netif_carrier_off(netdev);
1351 netif_stop_queue(netdev);
1353 } else if (temp_state == NX_TEMP_WARN) {
1354 if (adapter->temp == NX_TEMP_NORMAL) {
1356 "%s: Device temperature %d degrees C "
1357 "exceeds operating range."
1358 " Immediate action needed.\n",
1359 netxen_nic_driver_name, temp_val);
1362 if (adapter->temp == NX_TEMP_WARN) {
1364 "%s: Device temperature is now %d degrees C"
1365 " in normal range.\n", netxen_nic_driver_name,
1369 adapter->temp = temp_state;
1373 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1375 struct net_device *netdev = adapter->netdev;
1376 u32 val, port, linkup;
1378 port = adapter->physical_port;
1380 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1381 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1382 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1383 linkup = (val == XG_LINK_UP_P3);
1385 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1386 if (adapter->ahw.board_type == NETXEN_NIC_GBE)
1387 linkup = (val >> port) & 1;
1389 val = (val >> port*8) & 0xff;
1390 linkup = (val == XG_LINK_UP);
1394 if (adapter->ahw.linkup && !linkup) {
1395 printk(KERN_INFO "%s: %s NIC Link is down\n",
1396 netxen_nic_driver_name, netdev->name);
1397 adapter->ahw.linkup = 0;
1398 if (netif_running(netdev)) {
1399 netif_carrier_off(netdev);
1400 netif_stop_queue(netdev);
1403 netxen_nic_set_link_parameters(adapter);
1404 } else if (!adapter->ahw.linkup && linkup) {
1405 printk(KERN_INFO "%s: %s NIC Link is up\n",
1406 netxen_nic_driver_name, netdev->name);
1407 adapter->ahw.linkup = 1;
1408 if (netif_running(netdev)) {
1409 netif_carrier_on(netdev);
1410 netif_wake_queue(netdev);
1413 netxen_nic_set_link_parameters(adapter);
1417 static void netxen_watchdog(unsigned long v)
1419 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1421 SCHEDULE_WORK(&adapter->watchdog_task);
1424 void netxen_watchdog_task(struct work_struct *work)
1426 struct netxen_adapter *adapter =
1427 container_of(work, struct netxen_adapter, watchdog_task);
1429 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1432 netxen_nic_handle_phy_intr(adapter);
1434 if (netif_running(adapter->netdev))
1435 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1438 static void netxen_tx_timeout(struct net_device *netdev)
1440 struct netxen_adapter *adapter = (struct netxen_adapter *)
1441 netdev_priv(netdev);
1442 SCHEDULE_WORK(&adapter->tx_timeout_task);
1445 static void netxen_tx_timeout_task(struct work_struct *work)
1447 struct netxen_adapter *adapter =
1448 container_of(work, struct netxen_adapter, tx_timeout_task);
1450 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1451 netxen_nic_driver_name, adapter->netdev->name);
1453 netxen_nic_disable_int(adapter);
1454 napi_disable(&adapter->napi);
1456 adapter->netdev->trans_start = jiffies;
1458 napi_enable(&adapter->napi);
1459 netxen_nic_enable_int(adapter);
1460 netif_wake_queue(adapter->netdev);
1464 * netxen_nic_get_stats - Get System Network Statistics
1465 * @netdev: network interface device structure
1467 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1469 struct netxen_adapter *adapter = netdev_priv(netdev);
1470 struct net_device_stats *stats = &adapter->net_stats;
1472 memset(stats, 0, sizeof(*stats));
1474 /* total packets received */
1475 stats->rx_packets = adapter->stats.no_rcv;
1476 /* total packets transmitted */
1477 stats->tx_packets = adapter->stats.xmitedframes +
1478 adapter->stats.xmitfinished;
1479 /* total bytes received */
1480 stats->rx_bytes = adapter->stats.rxbytes;
1481 /* total bytes transmitted */
1482 stats->tx_bytes = adapter->stats.txbytes;
1483 /* bad packets received */
1484 stats->rx_errors = adapter->stats.rcvdbadskb;
1485 /* packet transmit problems */
1486 stats->tx_errors = adapter->stats.nocmddescriptor;
1487 /* no space in linux buffers */
1488 stats->rx_dropped = adapter->stats.rxdropped;
1489 /* no space available in linux */
1490 stats->tx_dropped = adapter->stats.txdropped;
1495 static irqreturn_t netxen_intr(int irq, void *data)
1497 struct netxen_adapter *adapter = data;
1500 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1502 if (!(status & adapter->legacy_intr.int_vec_bit))
1505 if (adapter->ahw.revision_id >= NX_P3_B1) {
1506 /* check interrupt state machine, to be sure */
1507 status = adapter->pci_read_immediate(adapter,
1509 if (!ISR_LEGACY_INT_TRIGGERED(status))
1513 unsigned long our_int = 0;
1515 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
1517 /* not our interrupt */
1518 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1521 /* claim interrupt */
1522 adapter->pci_write_normalize(adapter,
1523 CRB_INT_VECTOR, (our_int & 0xffffffff));
1526 /* clear interrupt */
1527 if (adapter->fw_major < 4)
1528 netxen_nic_disable_int(adapter);
1530 adapter->pci_write_immediate(adapter,
1531 adapter->legacy_intr.tgt_status_reg,
1533 /* read twice to ensure write is flushed */
1534 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1535 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1537 napi_schedule(&adapter->napi);
1542 static irqreturn_t netxen_msi_intr(int irq, void *data)
1544 struct netxen_adapter *adapter = data;
1546 /* clear interrupt */
1547 adapter->pci_write_immediate(adapter,
1548 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1550 napi_schedule(&adapter->napi);
1554 static irqreturn_t netxen_msix_intr(int irq, void *data)
1556 struct netxen_adapter *adapter = data;
1558 napi_schedule(&adapter->napi);
1562 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1564 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
1569 tx_complete = netxen_process_cmd_ring(adapter);
1572 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1574 * Fairness issue. This will give undue weight to the
1575 * receive context 0.
1579 * To avoid starvation, we give each of our receivers,
1580 * a fraction of the quota. Sometimes, it might happen that we
1581 * have enough quota to process every packet, but since all the
1582 * packets are on one context, it gets only half of the quota,
1583 * and ends up not processing it.
1585 work_done += netxen_process_rcv_ring(adapter, ctx,
1586 budget / MAX_RCV_CTX);
1589 if ((work_done < budget) && tx_complete) {
1590 netif_rx_complete(&adapter->napi);
1591 netxen_nic_enable_int(adapter);
1597 #ifdef CONFIG_NET_POLL_CONTROLLER
1598 static void netxen_nic_poll_controller(struct net_device *netdev)
1600 struct netxen_adapter *adapter = netdev_priv(netdev);
1601 disable_irq(adapter->irq);
1602 netxen_intr(adapter->irq, adapter);
1603 enable_irq(adapter->irq);
1607 static struct pci_driver netxen_driver = {
1608 .name = netxen_nic_driver_name,
1609 .id_table = netxen_pci_tbl,
1610 .probe = netxen_nic_probe,
1611 .remove = __devexit_p(netxen_nic_remove)
1614 /* Driver Registration on NetXen card */
1616 static int __init netxen_init_module(void)
1618 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1621 return pci_register_driver(&netxen_driver);
1624 module_init(netxen_init_module);
1626 static void __exit netxen_exit_module(void)
1628 pci_unregister_driver(&netxen_driver);
1629 destroy_workqueue(netxen_workq);
1632 module_exit(netxen_exit_module);