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;
204 #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 #define PCI_CAP_ID_GEN 0x10
377 static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
384 struct pci_dev *pdev;
386 pdev = adapter->pdev;
388 adapter->hw_read_wx(adapter,
389 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
390 /* clear chicken3.25:24 */
391 chicken &= 0xFCFFFFFF;
393 * if gen1 and B0, set F1020 - if gen 2, do nothing
394 * if gen2 set to F1000
396 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
398 pci_read_config_dword(pdev, pos + 0x10, &control);
399 if ((control & 0x000F0000) != 0x00020000) {
400 /* set chicken3.24 if gen1 */
401 chicken |= 0x01000000;
403 printk(KERN_INFO "%s Gen2 strapping detected\n",
404 netxen_nic_driver_name);
407 /* set chicken3.24 if gen1 */
408 chicken |= 0x01000000;
409 printk(KERN_INFO "%s Gen1 strapping detected\n",
410 netxen_nic_driver_name);
411 if (adapter->ahw.revision_id == NX_P3_B0)
417 adapter->hw_write_wx(adapter,
418 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
423 pdevfuncsave = pdev->devfn;
424 if (pdevfuncsave & 0x07)
427 for (i = 0; i < 8; i++) {
428 pci_read_config_dword(pdev, pos + 8, &control);
429 pci_read_config_dword(pdev, pos + 8, &control);
430 pci_write_config_dword(pdev, pos + 8, c8c9value);
433 pdev->devfn = pdevfuncsave;
436 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
441 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
443 pci_read_config_dword(pdev, pos, &control);
445 control |= PCI_MSIX_FLAGS_ENABLE;
448 pci_write_config_dword(pdev, pos, control);
452 static void netxen_init_msix_entries(struct netxen_adapter *adapter)
456 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
457 adapter->msix_entries[i].entry = i;
461 netxen_read_mac_addr(struct netxen_adapter *adapter)
466 struct net_device *netdev = adapter->netdev;
467 struct pci_dev *pdev = adapter->pdev;
469 if (netxen_is_flash_supported(adapter) != 0)
472 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
473 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
476 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
480 p = (unsigned char *)&mac_addr;
481 for (i = 0; i < 6; i++)
482 netdev->dev_addr[i] = *(p + 5 - i);
484 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
486 /* set station address */
488 if (!is_valid_ether_addr(netdev->perm_addr))
489 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
491 adapter->macaddr_set(adapter, netdev->dev_addr);
496 static void netxen_set_multicast_list(struct net_device *dev)
498 struct netxen_adapter *adapter = netdev_priv(dev);
500 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
501 netxen_p3_nic_set_multi(dev);
503 netxen_p2_nic_set_multi(dev);
506 static const struct net_device_ops netxen_netdev_ops = {
507 .ndo_open = netxen_nic_open,
508 .ndo_stop = netxen_nic_close,
509 .ndo_start_xmit = netxen_nic_xmit_frame,
510 .ndo_get_stats = netxen_nic_get_stats,
511 .ndo_validate_addr = eth_validate_addr,
512 .ndo_set_multicast_list = netxen_set_multicast_list,
513 .ndo_set_mac_address = netxen_nic_set_mac,
514 .ndo_change_mtu = netxen_nic_change_mtu,
515 .ndo_tx_timeout = netxen_tx_timeout,
516 #ifdef CONFIG_NET_POLL_CONTROLLER
517 .ndo_poll_controller = netxen_nic_poll_controller,
524 * The Linux system will invoke this after identifying the vendor ID and
525 * device Id in the pci_tbl supported by this module.
527 * A quad port card has one operational PCI config space, (function 0),
528 * which is used to access all four ports.
530 * This routine will initialize the adapter, and setup the global parameters
531 * along with the port's specific structure.
534 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
536 struct net_device *netdev = NULL;
537 struct netxen_adapter *adapter = NULL;
538 void __iomem *mem_ptr0 = NULL;
539 void __iomem *mem_ptr1 = NULL;
540 void __iomem *mem_ptr2 = NULL;
541 unsigned long first_page_group_end;
542 unsigned long first_page_group_start;
545 u8 __iomem *db_ptr = NULL;
546 unsigned long mem_base, mem_len, db_base, db_len, pci_len0 = 0;
548 int first_driver, first_boot;
550 int pci_func_id = PCI_FUNC(pdev->devfn);
551 struct netxen_legacy_intr_set *legacy_intrp;
554 if (pci_func_id == 0)
555 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
557 if (pdev->class != 0x020000) {
558 printk(KERN_DEBUG "NetXen function %d, class %x will not "
559 "be enabled.\n",pci_func_id, pdev->class);
563 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
564 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
565 "will not be enabled.\n",
570 if ((err = pci_enable_device(pdev)))
573 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
575 goto err_out_disable_pdev;
578 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
579 goto err_out_disable_pdev;
581 pci_set_master(pdev);
583 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
585 printk(KERN_ERR"%s: Failed to allocate memory for the "
586 "device block.Check system memory resource"
587 " usage.\n", netxen_nic_driver_name);
588 goto err_out_free_res;
591 SET_NETDEV_DEV(netdev, &pdev->dev);
593 adapter = netdev_priv(netdev);
594 adapter->netdev = netdev;
595 adapter->pdev = pdev;
596 adapter->ahw.pci_func = pci_func_id;
598 revision_id = pdev->revision;
599 adapter->ahw.revision_id = revision_id;
601 err = nx_set_dma_mask(adapter, revision_id);
603 goto err_out_free_netdev;
605 rwlock_init(&adapter->adapter_lock);
606 adapter->ahw.qdr_sn_window = -1;
607 adapter->ahw.ddr_mn_window = -1;
609 /* remap phys address */
610 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
611 mem_len = pci_resource_len(pdev, 0);
614 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
615 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
616 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
617 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
618 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
619 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
620 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
621 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
622 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
624 /* 128 Meg of memory */
625 if (mem_len == NETXEN_PCI_128MB_SIZE) {
626 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
627 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
628 SECOND_PAGE_GROUP_SIZE);
629 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
630 THIRD_PAGE_GROUP_SIZE);
631 first_page_group_start = FIRST_PAGE_GROUP_START;
632 first_page_group_end = FIRST_PAGE_GROUP_END;
633 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
634 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
635 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
636 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
637 first_page_group_start = 0;
638 first_page_group_end = 0;
639 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
640 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
641 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
642 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
643 adapter->pci_write_immediate =
644 netxen_nic_pci_write_immediate_2M;
645 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
646 adapter->pci_write_normalize =
647 netxen_nic_pci_write_normalize_2M;
648 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
649 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
650 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
652 mem_ptr0 = ioremap(mem_base, mem_len);
654 first_page_group_start = 0;
655 first_page_group_end = 0;
657 adapter->ahw.ddr_mn_window = 0;
658 adapter->ahw.qdr_sn_window = 0;
660 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
661 (pci_func_id * 0x20);
662 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
664 adapter->ahw.ms_win_crb += (pci_func_id * 0x20);
666 adapter->ahw.ms_win_crb +=
667 0xA0 + ((pci_func_id - 4) * 0x10);
670 goto err_out_free_netdev;
673 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
675 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
676 db_len = pci_resource_len(pdev, 4);
679 printk(KERN_ERR "%s: doorbell is disabled\n",
680 netxen_nic_driver_name);
682 goto err_out_iounmap;
684 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
687 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
689 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
690 netxen_nic_driver_name);
692 goto err_out_iounmap;
694 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
696 adapter->ahw.pci_base0 = mem_ptr0;
697 adapter->ahw.pci_len0 = pci_len0;
698 adapter->ahw.first_page_group_start = first_page_group_start;
699 adapter->ahw.first_page_group_end = first_page_group_end;
700 adapter->ahw.pci_base1 = mem_ptr1;
701 adapter->ahw.pci_base2 = mem_ptr2;
702 adapter->ahw.db_base = db_ptr;
703 adapter->ahw.db_len = db_len;
705 netif_napi_add(netdev, &adapter->napi,
706 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
708 if (revision_id >= NX_P3_B0)
709 legacy_intrp = &legacy_intr[pci_func_id];
711 legacy_intrp = &legacy_intr[0];
713 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
714 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
715 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
716 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
718 /* this will be read from FW later */
719 adapter->intr_scheme = -1;
720 adapter->msi_mode = -1;
722 /* This will be reset for mezz cards */
723 adapter->portnum = pci_func_id;
724 adapter->status &= ~NETXEN_NETDEV_STATUS;
725 adapter->rx_csum = 1;
726 adapter->mc_enabled = 0;
727 if (NX_IS_REVISION_P3(revision_id))
728 adapter->max_mc_count = 38;
730 adapter->max_mc_count = 16;
732 netdev->netdev_ops = &netxen_netdev_ops;
733 netdev->watchdog_timeo = 2*HZ;
735 netxen_nic_change_mtu(netdev, netdev->mtu);
737 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
739 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
740 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
742 if (NX_IS_REVISION_P3(revision_id)) {
743 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
744 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
747 if (adapter->pci_using_dac) {
748 netdev->features |= NETIF_F_HIGHDMA;
749 netdev->vlan_features |= NETIF_F_HIGHDMA;
753 * Set the CRB window to invalid. If any register in window 0 is
754 * accessed it should set the window to 0 and then reset it to 1.
756 adapter->curr_window = 255;
758 if (netxen_nic_get_board_info(adapter) != 0) {
759 printk("%s: Error getting board config info.\n",
760 netxen_nic_driver_name);
762 goto err_out_iounmap;
765 netxen_initialize_adapter_ops(adapter);
767 /* Mezz cards have PCI function 0,2,3 enabled */
768 switch (adapter->ahw.boardcfg.board_type) {
769 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
770 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
771 if (pci_func_id >= 2)
772 adapter->portnum = pci_func_id - 2;
779 * This call will setup various max rx/tx counts.
780 * It must be done before any buffer/ring allocations.
782 netxen_check_options(adapter);
785 if (NX_IS_REVISION_P3(revision_id)) {
786 if (adapter->ahw.pci_func == 0)
789 if (adapter->portnum == 0)
794 first_boot = adapter->pci_read_normalize(adapter,
795 NETXEN_CAM_RAM(0x1fc));
797 err = netxen_check_hw_init(adapter, first_boot);
799 printk(KERN_ERR "%s: error in init HW init sequence\n",
800 netxen_nic_driver_name);
801 goto err_out_iounmap;
804 if (NX_IS_REVISION_P3(revision_id))
805 netxen_set_port_mode(adapter);
807 if (first_boot != 0x55555555) {
808 adapter->pci_write_normalize(adapter,
809 CRB_CMDPEG_STATE, 0);
810 netxen_pinit_from_rom(adapter, 0);
813 netxen_load_firmware(adapter);
815 if (NX_IS_REVISION_P3(revision_id))
816 netxen_pcie_strap_init(adapter);
818 if (NX_IS_REVISION_P2(revision_id)) {
820 /* Initialize multicast addr pool owners */
822 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
824 netxen_crb_writelit_adapter(adapter,
825 NETXEN_MAC_ADDR_CNTL_REG, val);
829 err = netxen_initialize_adapter_offload(adapter);
831 goto err_out_iounmap;
834 * Tell the hardware our version number.
836 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
837 | ((_NETXEN_NIC_LINUX_MINOR << 8))
838 | (_NETXEN_NIC_LINUX_SUBVERSION);
839 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i);
841 /* Handshake with the card before we register the devices. */
842 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
844 goto err_out_free_offload;
848 netxen_nic_flash_print(adapter);
850 if (NX_IS_REVISION_P3(revision_id)) {
851 adapter->hw_read_wx(adapter,
852 NETXEN_MIU_MN_CONTROL, &val, 4);
853 adapter->ahw.cut_through = (val & 0x4) ? 1 : 0;
854 dev_info(&pdev->dev, "firmware running in %s mode\n",
855 adapter->ahw.cut_through ? "cut through" : "legacy");
859 * See if the firmware gave us a virtual-physical port mapping.
861 adapter->physical_port = adapter->portnum;
862 i = adapter->pci_read_normalize(adapter, CRB_V2P(adapter->portnum));
864 adapter->physical_port = i;
866 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
868 netxen_set_msix_bit(pdev, 0);
870 if (NX_IS_REVISION_P3(revision_id)) {
871 if ((mem_len != NETXEN_PCI_128MB_SIZE) &&
872 mem_len != NETXEN_PCI_2MB_SIZE)
873 adapter->msix_supported = 0;
876 if (adapter->msix_supported) {
878 netxen_init_msix_entries(adapter);
880 if (pci_enable_msix(pdev, adapter->msix_entries,
881 MSIX_ENTRIES_PER_ADAPTER))
884 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
885 netxen_set_msix_bit(pdev, 1);
886 dev_info(&pdev->dev, "using msi-x interrupts\n");
890 if (use_msi && !pci_enable_msi(pdev)) {
891 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
892 dev_info(&pdev->dev, "using msi interrupts\n");
894 dev_info(&pdev->dev, "using legacy interrupts\n");
897 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
898 netdev->irq = adapter->msix_entries[0].vector;
900 netdev->irq = pdev->irq;
902 err = netxen_receive_peg_ready(adapter);
904 goto err_out_disable_msi;
906 init_timer(&adapter->watchdog_timer);
907 adapter->watchdog_timer.function = &netxen_watchdog;
908 adapter->watchdog_timer.data = (unsigned long)adapter;
909 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
910 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
912 err = netxen_read_mac_addr(adapter);
914 dev_warn(&pdev->dev, "failed to read mac addr\n");
916 netif_carrier_off(netdev);
917 netif_stop_queue(netdev);
919 if ((err = register_netdev(netdev))) {
920 printk(KERN_ERR "%s: register_netdev failed port #%d"
921 " aborting\n", netxen_nic_driver_name,
924 goto err_out_disable_msi;
927 pci_set_drvdata(pdev, adapter);
929 switch (adapter->ahw.board_type) {
931 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
932 adapter->netdev->name);
934 case NETXEN_NIC_XGBE:
935 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
936 adapter->netdev->name);
943 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
944 pci_disable_msix(pdev);
945 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
946 pci_disable_msi(pdev);
948 err_out_free_offload:
950 netxen_free_adapter_offload(adapter);
967 pci_release_regions(pdev);
969 err_out_disable_pdev:
970 pci_set_drvdata(pdev, NULL);
971 pci_disable_device(pdev);
975 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
977 struct netxen_adapter *adapter;
978 struct net_device *netdev;
980 adapter = pci_get_drvdata(pdev);
984 netdev = adapter->netdev;
986 unregister_netdev(netdev);
988 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
989 netxen_free_hw_resources(adapter);
990 netxen_release_rx_buffers(adapter);
991 netxen_free_sw_resources(adapter);
993 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
994 netxen_p3_free_mac_list(adapter);
997 if (adapter->portnum == 0)
998 netxen_free_adapter_offload(adapter);
1001 free_irq(adapter->irq, adapter);
1003 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1004 pci_disable_msix(pdev);
1005 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1006 pci_disable_msi(pdev);
1008 iounmap(adapter->ahw.db_base);
1009 iounmap(adapter->ahw.pci_base0);
1010 if (adapter->ahw.pci_base1 != NULL)
1011 iounmap(adapter->ahw.pci_base1);
1012 if (adapter->ahw.pci_base2 != NULL)
1013 iounmap(adapter->ahw.pci_base2);
1015 pci_release_regions(pdev);
1016 pci_disable_device(pdev);
1017 pci_set_drvdata(pdev, NULL);
1019 free_netdev(netdev);
1023 * Called when a network interface is made active
1024 * @returns 0 on success, negative value on failure
1026 static int netxen_nic_open(struct net_device *netdev)
1028 struct netxen_adapter *adapter = netdev_priv(netdev);
1031 irq_handler_t handler;
1032 unsigned long flags = IRQF_SAMPLE_RANDOM;
1034 if (adapter->driver_mismatch)
1037 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1038 err = netxen_init_firmware(adapter);
1040 printk(KERN_ERR "Failed to init firmware\n");
1044 if (adapter->fw_major < 4)
1045 adapter->max_rds_rings = 3;
1047 adapter->max_rds_rings = 2;
1049 err = netxen_alloc_sw_resources(adapter);
1051 printk(KERN_ERR "%s: Error in setting sw resources\n",
1056 netxen_nic_clear_stats(adapter);
1058 err = netxen_alloc_hw_resources(adapter);
1060 printk(KERN_ERR "%s: Error in setting hw resources\n",
1062 goto err_out_free_sw;
1065 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
1066 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
1067 printk(KERN_ERR "%s: Firmware interrupt scheme is "
1068 "incompatible with driver\n",
1070 adapter->driver_mismatch = 1;
1071 goto err_out_free_hw;
1074 if (adapter->fw_major < 4) {
1075 adapter->crb_addr_cmd_producer =
1076 crb_cmd_producer[adapter->portnum];
1077 adapter->crb_addr_cmd_consumer =
1078 crb_cmd_consumer[adapter->portnum];
1080 netxen_nic_update_cmd_producer(adapter, 0);
1081 netxen_nic_update_cmd_consumer(adapter, 0);
1084 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1085 for (ring = 0; ring < adapter->max_rds_rings; ring++)
1086 netxen_post_rx_buffers(adapter, ctx, ring);
1088 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1089 handler = netxen_msix_intr;
1090 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1091 handler = netxen_msi_intr;
1093 flags |= IRQF_SHARED;
1094 handler = netxen_intr;
1096 adapter->irq = netdev->irq;
1097 err = request_irq(adapter->irq, handler,
1098 flags, netdev->name, adapter);
1100 printk(KERN_ERR "request_irq failed with: %d\n", err);
1101 goto err_out_free_rxbuf;
1104 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1107 /* Done here again so that even if phantom sw overwrote it,
1109 err = adapter->init_port(adapter, adapter->physical_port);
1111 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1112 netxen_nic_driver_name, adapter->portnum);
1113 goto err_out_free_irq;
1115 adapter->macaddr_set(adapter, netdev->dev_addr);
1117 netxen_nic_set_link_parameters(adapter);
1119 netxen_set_multicast_list(netdev);
1120 if (adapter->set_mtu)
1121 adapter->set_mtu(adapter, netdev->mtu);
1123 adapter->ahw.linkup = 0;
1124 mod_timer(&adapter->watchdog_timer, jiffies);
1126 napi_enable(&adapter->napi);
1127 netxen_nic_enable_int(adapter);
1129 netif_start_queue(netdev);
1134 free_irq(adapter->irq, adapter);
1136 netxen_release_rx_buffers(adapter);
1138 netxen_free_hw_resources(adapter);
1140 netxen_free_sw_resources(adapter);
1145 * netxen_nic_close - Disables a network interface entry point
1147 static int netxen_nic_close(struct net_device *netdev)
1149 struct netxen_adapter *adapter = netdev_priv(netdev);
1151 netif_carrier_off(netdev);
1152 netif_stop_queue(netdev);
1153 napi_disable(&adapter->napi);
1155 if (adapter->stop_port)
1156 adapter->stop_port(adapter);
1158 netxen_nic_disable_int(adapter);
1160 netxen_release_tx_buffers(adapter);
1162 FLUSH_SCHEDULED_WORK();
1163 del_timer_sync(&adapter->watchdog_timer);
1168 static bool netxen_tso_check(struct net_device *netdev,
1169 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1172 u8 opcode = TX_ETHER_PKT;
1173 __be16 protocol = skb->protocol;
1176 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1177 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1178 protocol = vh->h_vlan_encapsulated_proto;
1179 flags = FLAGS_VLAN_TAGGED;
1182 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1183 skb_shinfo(skb)->gso_size > 0) {
1185 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1186 desc->total_hdr_length =
1187 skb_transport_offset(skb) + tcp_hdrlen(skb);
1189 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1190 TX_TCP_LSO6 : TX_TCP_LSO;
1193 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1196 if (protocol == cpu_to_be16(ETH_P_IP)) {
1197 l4proto = ip_hdr(skb)->protocol;
1199 if (l4proto == IPPROTO_TCP)
1200 opcode = TX_TCP_PKT;
1201 else if(l4proto == IPPROTO_UDP)
1202 opcode = TX_UDP_PKT;
1203 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1204 l4proto = ipv6_hdr(skb)->nexthdr;
1206 if (l4proto == IPPROTO_TCP)
1207 opcode = TX_TCPV6_PKT;
1208 else if(l4proto == IPPROTO_UDP)
1209 opcode = TX_UDPV6_PKT;
1212 desc->tcp_hdr_offset = skb_transport_offset(skb);
1213 desc->ip_hdr_offset = skb_network_offset(skb);
1214 netxen_set_tx_flags_opcode(desc, flags, opcode);
1219 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1220 struct netxen_cmd_buffer *pbuf, int last)
1223 struct netxen_skb_frag *buffrag;
1225 buffrag = &pbuf->frag_array[0];
1226 pci_unmap_single(pdev, buffrag->dma,
1227 buffrag->length, PCI_DMA_TODEVICE);
1229 for (k = 1; k < last; k++) {
1230 buffrag = &pbuf->frag_array[k];
1231 pci_unmap_page(pdev, buffrag->dma,
1232 buffrag->length, PCI_DMA_TODEVICE);
1236 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1238 struct netxen_adapter *adapter = netdev_priv(netdev);
1239 struct netxen_hardware_context *hw = &adapter->ahw;
1240 unsigned int first_seg_len = skb->len - skb->data_len;
1241 struct netxen_cmd_buffer *pbuf;
1242 struct netxen_skb_frag *buffrag;
1243 struct cmd_desc_type0 *hwdesc;
1244 struct pci_dev *pdev = adapter->pdev;
1245 dma_addr_t temp_dma;
1248 u32 producer, consumer;
1249 int frag_count, no_of_desc;
1250 u32 num_txd = adapter->max_tx_desc_count;
1251 bool is_tso = false;
1253 frag_count = skb_shinfo(skb)->nr_frags + 1;
1255 /* There 4 fragments per descriptor */
1256 no_of_desc = (frag_count + 3) >> 2;
1258 producer = adapter->cmd_producer;
1260 consumer = adapter->last_cmd_consumer;
1261 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1262 netif_stop_queue(netdev);
1264 return NETDEV_TX_BUSY;
1267 /* Copy the descriptors into the hardware */
1268 hwdesc = &hw->cmd_desc_head[producer];
1269 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1270 /* Take skb->data itself */
1271 pbuf = &adapter->cmd_buf_arr[producer];
1273 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1276 pbuf->frag_count = frag_count;
1277 buffrag = &pbuf->frag_array[0];
1278 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1280 if (pci_dma_mapping_error(pdev, temp_dma))
1283 buffrag->dma = temp_dma;
1284 buffrag->length = first_seg_len;
1285 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1286 netxen_set_tx_port(hwdesc, adapter->portnum);
1288 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1289 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1291 for (i = 1, k = 1; i < frag_count; i++, k++) {
1292 struct skb_frag_struct *frag;
1294 unsigned long offset;
1296 /* move to next desc. if there is a need */
1297 if ((i & 0x3) == 0) {
1299 producer = get_next_index(producer, num_txd);
1300 hwdesc = &hw->cmd_desc_head[producer];
1301 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1302 pbuf = &adapter->cmd_buf_arr[producer];
1305 frag = &skb_shinfo(skb)->frags[i - 1];
1307 offset = frag->page_offset;
1310 temp_dma = pci_map_page(pdev, frag->page, offset,
1311 len, PCI_DMA_TODEVICE);
1312 if (pci_dma_mapping_error(pdev, temp_dma)) {
1313 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1318 buffrag->dma = temp_dma;
1319 buffrag->length = temp_len;
1323 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1324 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1327 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1328 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1331 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1332 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1335 hwdesc->buffer4_length = cpu_to_le16(temp_len);
1336 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1341 producer = get_next_index(producer, num_txd);
1343 /* For LSO, we need to copy the MAC/IP/TCP headers into
1344 * the descriptor ring
1347 int hdr_len, first_hdr_len, more_hdr;
1348 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1349 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1350 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1353 first_hdr_len = hdr_len;
1356 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1357 hwdesc = &hw->cmd_desc_head[producer];
1358 pbuf = &adapter->cmd_buf_arr[producer];
1361 /* copy the first 64 bytes */
1362 memcpy(((void *)hwdesc) + 2,
1363 (void *)(skb->data), first_hdr_len);
1364 producer = get_next_index(producer, num_txd);
1367 hwdesc = &hw->cmd_desc_head[producer];
1368 pbuf = &adapter->cmd_buf_arr[producer];
1370 /* copy the next 64 bytes - should be enough except
1371 * for pathological case
1373 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1377 producer = get_next_index(producer, num_txd);
1381 adapter->cmd_producer = producer;
1382 adapter->stats.txbytes += skb->len;
1384 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
1386 adapter->stats.xmitcalled++;
1387 netdev->trans_start = jiffies;
1389 return NETDEV_TX_OK;
1392 adapter->stats.txdropped++;
1393 dev_kfree_skb_any(skb);
1394 return NETDEV_TX_OK;
1397 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1399 struct net_device *netdev = adapter->netdev;
1400 uint32_t temp, temp_state, temp_val;
1403 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1405 temp_state = nx_get_temp_state(temp);
1406 temp_val = nx_get_temp_val(temp);
1408 if (temp_state == NX_TEMP_PANIC) {
1410 "%s: Device temperature %d degrees C exceeds"
1411 " maximum allowed. Hardware has been shut down.\n",
1412 netxen_nic_driver_name, temp_val);
1414 netif_carrier_off(netdev);
1415 netif_stop_queue(netdev);
1417 } else if (temp_state == NX_TEMP_WARN) {
1418 if (adapter->temp == NX_TEMP_NORMAL) {
1420 "%s: Device temperature %d degrees C "
1421 "exceeds operating range."
1422 " Immediate action needed.\n",
1423 netxen_nic_driver_name, temp_val);
1426 if (adapter->temp == NX_TEMP_WARN) {
1428 "%s: Device temperature is now %d degrees C"
1429 " in normal range.\n", netxen_nic_driver_name,
1433 adapter->temp = temp_state;
1437 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1439 struct net_device *netdev = adapter->netdev;
1440 u32 val, port, linkup;
1442 port = adapter->physical_port;
1444 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1445 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1446 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1447 linkup = (val == XG_LINK_UP_P3);
1449 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1450 if (adapter->ahw.board_type == NETXEN_NIC_GBE)
1451 linkup = (val >> port) & 1;
1453 val = (val >> port*8) & 0xff;
1454 linkup = (val == XG_LINK_UP);
1458 if (adapter->ahw.linkup && !linkup) {
1459 printk(KERN_INFO "%s: %s NIC Link is down\n",
1460 netxen_nic_driver_name, netdev->name);
1461 adapter->ahw.linkup = 0;
1462 if (netif_running(netdev)) {
1463 netif_carrier_off(netdev);
1464 netif_stop_queue(netdev);
1467 netxen_nic_set_link_parameters(adapter);
1468 } else if (!adapter->ahw.linkup && linkup) {
1469 printk(KERN_INFO "%s: %s NIC Link is up\n",
1470 netxen_nic_driver_name, netdev->name);
1471 adapter->ahw.linkup = 1;
1472 if (netif_running(netdev)) {
1473 netif_carrier_on(netdev);
1474 netif_wake_queue(netdev);
1477 netxen_nic_set_link_parameters(adapter);
1481 static void netxen_watchdog(unsigned long v)
1483 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1485 SCHEDULE_WORK(&adapter->watchdog_task);
1488 void netxen_watchdog_task(struct work_struct *work)
1490 struct netxen_adapter *adapter =
1491 container_of(work, struct netxen_adapter, watchdog_task);
1493 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1496 netxen_nic_handle_phy_intr(adapter);
1498 if (netif_running(adapter->netdev))
1499 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1502 static void netxen_tx_timeout(struct net_device *netdev)
1504 struct netxen_adapter *adapter = (struct netxen_adapter *)
1505 netdev_priv(netdev);
1506 SCHEDULE_WORK(&adapter->tx_timeout_task);
1509 static void netxen_tx_timeout_task(struct work_struct *work)
1511 struct netxen_adapter *adapter =
1512 container_of(work, struct netxen_adapter, tx_timeout_task);
1514 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1515 netxen_nic_driver_name, adapter->netdev->name);
1517 netxen_nic_disable_int(adapter);
1518 napi_disable(&adapter->napi);
1520 adapter->netdev->trans_start = jiffies;
1522 napi_enable(&adapter->napi);
1523 netxen_nic_enable_int(adapter);
1524 netif_wake_queue(adapter->netdev);
1528 * netxen_nic_get_stats - Get System Network Statistics
1529 * @netdev: network interface device structure
1531 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1533 struct netxen_adapter *adapter = netdev_priv(netdev);
1534 struct net_device_stats *stats = &adapter->net_stats;
1536 memset(stats, 0, sizeof(*stats));
1538 /* total packets received */
1539 stats->rx_packets = adapter->stats.no_rcv;
1540 /* total packets transmitted */
1541 stats->tx_packets = adapter->stats.xmitedframes +
1542 adapter->stats.xmitfinished;
1543 /* total bytes received */
1544 stats->rx_bytes = adapter->stats.rxbytes;
1545 /* total bytes transmitted */
1546 stats->tx_bytes = adapter->stats.txbytes;
1547 /* bad packets received */
1548 stats->rx_errors = adapter->stats.rcvdbadskb;
1549 /* packet transmit problems */
1550 stats->tx_errors = adapter->stats.nocmddescriptor;
1551 /* no space in linux buffers */
1552 stats->rx_dropped = adapter->stats.rxdropped;
1553 /* no space available in linux */
1554 stats->tx_dropped = adapter->stats.txdropped;
1559 static irqreturn_t netxen_intr(int irq, void *data)
1561 struct netxen_adapter *adapter = data;
1564 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1566 if (!(status & adapter->legacy_intr.int_vec_bit))
1569 if (adapter->ahw.revision_id >= NX_P3_B1) {
1570 /* check interrupt state machine, to be sure */
1571 status = adapter->pci_read_immediate(adapter,
1573 if (!ISR_LEGACY_INT_TRIGGERED(status))
1577 unsigned long our_int = 0;
1579 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
1581 /* not our interrupt */
1582 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1585 /* claim interrupt */
1586 adapter->pci_write_normalize(adapter,
1587 CRB_INT_VECTOR, (our_int & 0xffffffff));
1590 /* clear interrupt */
1591 if (adapter->fw_major < 4)
1592 netxen_nic_disable_int(adapter);
1594 adapter->pci_write_immediate(adapter,
1595 adapter->legacy_intr.tgt_status_reg,
1597 /* read twice to ensure write is flushed */
1598 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1599 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1601 napi_schedule(&adapter->napi);
1606 static irqreturn_t netxen_msi_intr(int irq, void *data)
1608 struct netxen_adapter *adapter = data;
1610 /* clear interrupt */
1611 adapter->pci_write_immediate(adapter,
1612 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1614 napi_schedule(&adapter->napi);
1618 static irqreturn_t netxen_msix_intr(int irq, void *data)
1620 struct netxen_adapter *adapter = data;
1622 napi_schedule(&adapter->napi);
1626 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1628 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
1633 tx_complete = netxen_process_cmd_ring(adapter);
1636 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1638 * Fairness issue. This will give undue weight to the
1639 * receive context 0.
1643 * To avoid starvation, we give each of our receivers,
1644 * a fraction of the quota. Sometimes, it might happen that we
1645 * have enough quota to process every packet, but since all the
1646 * packets are on one context, it gets only half of the quota,
1647 * and ends up not processing it.
1649 work_done += netxen_process_rcv_ring(adapter, ctx,
1650 budget / MAX_RCV_CTX);
1653 if ((work_done < budget) && tx_complete) {
1654 napi_complete(&adapter->napi);
1655 netxen_nic_enable_int(adapter);
1661 #ifdef CONFIG_NET_POLL_CONTROLLER
1662 static void netxen_nic_poll_controller(struct net_device *netdev)
1664 struct netxen_adapter *adapter = netdev_priv(netdev);
1665 disable_irq(adapter->irq);
1666 netxen_intr(adapter->irq, adapter);
1667 enable_irq(adapter->irq);
1671 static struct pci_driver netxen_driver = {
1672 .name = netxen_nic_driver_name,
1673 .id_table = netxen_pci_tbl,
1674 .probe = netxen_nic_probe,
1675 .remove = __devexit_p(netxen_nic_remove)
1678 /* Driver Registration on NetXen card */
1680 static int __init netxen_init_module(void)
1682 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1685 return pci_register_driver(&netxen_driver);
1688 module_init(netxen_init_module);
1690 static void __exit netxen_exit_module(void)
1692 pci_unregister_driver(&netxen_driver);
1693 destroy_workqueue(netxen_workq);
1696 module_exit(netxen_exit_module);