2 * Copyright (C) 2003 - 2006 NetXen, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
23 * Contact Information:
26 * 3965 Freedom Circle, Fourth floor,
27 * Santa Clara, CA 95054
30 * Main source file for NetXen NIC Driver on Linux
34 #include <linux/vmalloc.h>
35 #include <linux/highmem.h>
36 #include "netxen_nic_hw.h"
38 #include "netxen_nic.h"
39 #include "netxen_nic_phan_reg.h"
41 #include <linux/dma-mapping.h>
44 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
48 char netxen_nic_driver_name[] = "netxen_nic";
49 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
50 NETXEN_NIC_LINUX_VERSIONID;
52 #define NETXEN_NETDEV_WEIGHT 120
53 #define NETXEN_ADAPTER_UP_MAGIC 777
54 #define NETXEN_NIC_PEG_TUNE 0
56 /* Local functions to NetXen NIC driver */
57 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
58 const struct pci_device_id *ent);
59 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
60 static int netxen_nic_open(struct net_device *netdev);
61 static int netxen_nic_close(struct net_device *netdev);
62 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
63 static void netxen_tx_timeout(struct net_device *netdev);
64 static void netxen_tx_timeout_task(struct work_struct *work);
65 static void netxen_watchdog(unsigned long);
66 static int netxen_nic_poll(struct napi_struct *napi, int budget);
67 #ifdef CONFIG_NET_POLL_CONTROLLER
68 static void netxen_nic_poll_controller(struct net_device *netdev);
70 static irqreturn_t netxen_intr(int irq, void *data);
71 static irqreturn_t netxen_msi_intr(int irq, void *data);
73 int physical_port[] = {0, 1, 2, 3};
75 /* PCI Device ID Table */
76 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
77 {PCI_DEVICE(0x4040, 0x0001)},
78 {PCI_DEVICE(0x4040, 0x0002)},
79 {PCI_DEVICE(0x4040, 0x0003)},
80 {PCI_DEVICE(0x4040, 0x0004)},
81 {PCI_DEVICE(0x4040, 0x0005)},
82 {PCI_DEVICE(0x4040, 0x0024)},
83 {PCI_DEVICE(0x4040, 0x0025)},
87 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
89 struct workqueue_struct *netxen_workq;
90 static void netxen_watchdog(unsigned long);
92 static void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
93 uint32_t crb_producer)
95 switch (adapter->portnum) {
97 writel(crb_producer, NETXEN_CRB_NORMALIZE
98 (adapter, CRB_CMD_PRODUCER_OFFSET));
101 writel(crb_producer, NETXEN_CRB_NORMALIZE
102 (adapter, CRB_CMD_PRODUCER_OFFSET_1));
105 writel(crb_producer, NETXEN_CRB_NORMALIZE
106 (adapter, CRB_CMD_PRODUCER_OFFSET_2));
109 writel(crb_producer, NETXEN_CRB_NORMALIZE
110 (adapter, CRB_CMD_PRODUCER_OFFSET_3));
113 printk(KERN_WARNING "We tried to update "
114 "CRB_CMD_PRODUCER_OFFSET for invalid "
115 "PCI function id %d\n",
121 static void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
124 switch (adapter->portnum) {
126 writel(crb_consumer, NETXEN_CRB_NORMALIZE
127 (adapter, CRB_CMD_CONSUMER_OFFSET));
130 writel(crb_consumer, NETXEN_CRB_NORMALIZE
131 (adapter, CRB_CMD_CONSUMER_OFFSET_1));
134 writel(crb_consumer, NETXEN_CRB_NORMALIZE
135 (adapter, CRB_CMD_CONSUMER_OFFSET_2));
138 writel(crb_consumer, NETXEN_CRB_NORMALIZE
139 (adapter, CRB_CMD_CONSUMER_OFFSET_3));
142 printk(KERN_WARNING "We tried to update "
143 "CRB_CMD_PRODUCER_OFFSET for invalid "
144 "PCI function id %d\n",
150 #define ADAPTER_LIST_SIZE 12
152 static uint32_t msi_tgt_status[4] = {
153 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
154 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3
157 static uint32_t sw_int_mask[4] = {
158 CRB_SW_INT_MASK_0, CRB_SW_INT_MASK_1,
159 CRB_SW_INT_MASK_2, CRB_SW_INT_MASK_3
162 static void netxen_nic_disable_int(struct netxen_adapter *adapter)
166 int port = adapter->portnum;
167 int pci_fn = adapter->ahw.pci_func;
169 if (adapter->msi_mode != MSI_MODE_MULTIFUNC)
170 writel(0x0, NETXEN_CRB_NORMALIZE(adapter, sw_int_mask[port]));
172 if (adapter->intr_scheme != -1 &&
173 adapter->intr_scheme != INTR_SCHEME_PERPORT)
174 writel(mask,PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK));
176 if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
179 PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_STATUS));
180 mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR));
187 printk(KERN_NOTICE "%s: Failed to disable interrupt completely\n",
188 netxen_nic_driver_name);
191 if (adapter->msi_mode == MSI_MODE_MULTIFUNC) {
192 writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter,
193 msi_tgt_status[pci_fn]));
198 static void netxen_nic_enable_int(struct netxen_adapter *adapter)
201 int port = adapter->portnum;
203 DPRINTK(1, INFO, "Entered ISR Enable \n");
205 if (adapter->intr_scheme != -1 &&
206 adapter->intr_scheme != INTR_SCHEME_PERPORT) {
207 switch (adapter->ahw.board_type) {
211 case NETXEN_NIC_XGBE:
219 writel(mask, PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK));
222 writel(0x1, NETXEN_CRB_NORMALIZE(adapter, sw_int_mask[port]));
224 if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
226 if (adapter->intr_scheme != -1 &&
227 adapter->intr_scheme != INTR_SCHEME_PERPORT) {
228 writel(0X0, NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
231 PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_MASK));
234 DPRINTK(1, INFO, "Done with enable Int\n");
240 * The Linux system will invoke this after identifying the vendor ID and
241 * device Id in the pci_tbl supported by this module.
243 * A quad port card has one operational PCI config space, (function 0),
244 * which is used to access all four ports.
246 * This routine will initialize the adapter, and setup the global parameters
247 * along with the port's specific structure.
250 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
252 struct net_device *netdev = NULL;
253 struct netxen_adapter *adapter = NULL;
254 void __iomem *mem_ptr0 = NULL;
255 void __iomem *mem_ptr1 = NULL;
256 void __iomem *mem_ptr2 = NULL;
257 unsigned long first_page_group_end;
258 unsigned long first_page_group_start;
261 u8 __iomem *db_ptr = NULL;
262 unsigned long mem_base, mem_len, db_base, db_len;
263 int pci_using_dac, i = 0, err;
265 struct netxen_recv_context *recv_ctx = NULL;
266 struct netxen_rcv_desc_ctx *rcv_desc = NULL;
267 struct netxen_cmd_buffer *cmd_buf_arr = NULL;
268 __le64 mac_addr[FLASH_NUM_PORTS + 1];
271 int pci_func_id = PCI_FUNC(pdev->devfn);
272 DECLARE_MAC_BUF(mac);
274 printk(KERN_INFO "%s \n", netxen_nic_driver_string);
276 if (pdev->class != 0x020000) {
277 printk(KERN_ERR"NetXen function %d, class %x will not "
278 "be enabled.\n",pci_func_id, pdev->class);
281 if ((err = pci_enable_device(pdev)))
283 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
285 goto err_out_disable_pdev;
288 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
289 goto err_out_disable_pdev;
291 pci_set_master(pdev);
292 if (pdev->revision == NX_P2_C1 &&
293 (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) &&
294 (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) {
297 if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) ||
298 (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)))
299 goto err_out_free_res;
305 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
307 printk(KERN_ERR"%s: Failed to allocate memory for the "
308 "device block.Check system memory resource"
309 " usage.\n", netxen_nic_driver_name);
310 goto err_out_free_res;
313 SET_NETDEV_DEV(netdev, &pdev->dev);
315 adapter = netdev->priv;
317 adapter->ahw.pdev = pdev;
318 adapter->ahw.pci_func = pci_func_id;
320 /* remap phys address */
321 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
322 mem_len = pci_resource_len(pdev, 0);
324 /* 128 Meg of memory */
325 if (mem_len == NETXEN_PCI_128MB_SIZE) {
326 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
327 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
328 SECOND_PAGE_GROUP_SIZE);
329 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
330 THIRD_PAGE_GROUP_SIZE);
331 first_page_group_start = FIRST_PAGE_GROUP_START;
332 first_page_group_end = FIRST_PAGE_GROUP_END;
333 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
334 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
335 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
336 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
337 first_page_group_start = 0;
338 first_page_group_end = 0;
341 goto err_out_free_netdev;
344 if ((!mem_ptr0 && mem_len == NETXEN_PCI_128MB_SIZE) ||
345 !mem_ptr1 || !mem_ptr2) {
347 "Cannot remap adapter memory aborting.:"
348 "0 -> %p, 1 -> %p, 2 -> %p\n",
349 mem_ptr0, mem_ptr1, mem_ptr2);
352 goto err_out_iounmap;
354 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
355 db_len = pci_resource_len(pdev, 4);
358 printk(KERN_ERR "%s: doorbell is disabled\n",
359 netxen_nic_driver_name);
361 goto err_out_iounmap;
363 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
366 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
368 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
369 netxen_nic_driver_name);
371 goto err_out_iounmap;
373 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
375 adapter->ahw.pci_base0 = mem_ptr0;
376 adapter->ahw.first_page_group_start = first_page_group_start;
377 adapter->ahw.first_page_group_end = first_page_group_end;
378 adapter->ahw.pci_base1 = mem_ptr1;
379 adapter->ahw.pci_base2 = mem_ptr2;
380 adapter->ahw.db_base = db_ptr;
381 adapter->ahw.db_len = db_len;
383 adapter->netdev = netdev;
384 adapter->pdev = pdev;
386 netif_napi_add(netdev, &adapter->napi,
387 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
389 /* this will be read from FW later */
390 adapter->intr_scheme = -1;
391 adapter->msi_mode = -1;
393 /* This will be reset for mezz cards */
394 adapter->portnum = pci_func_id;
395 adapter->status &= ~NETXEN_NETDEV_STATUS;
396 adapter->rx_csum = 1;
398 netdev->open = netxen_nic_open;
399 netdev->stop = netxen_nic_close;
400 netdev->hard_start_xmit = netxen_nic_xmit_frame;
401 netdev->get_stats = netxen_nic_get_stats;
402 netdev->set_multicast_list = netxen_nic_set_multi;
403 netdev->set_mac_address = netxen_nic_set_mac;
404 netdev->change_mtu = netxen_nic_change_mtu;
405 netdev->tx_timeout = netxen_tx_timeout;
406 netdev->watchdog_timeo = 2*HZ;
408 netxen_nic_change_mtu(netdev, netdev->mtu);
410 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
411 #ifdef CONFIG_NET_POLL_CONTROLLER
412 netdev->poll_controller = netxen_nic_poll_controller;
414 /* ScatterGather support */
415 netdev->features = NETIF_F_SG;
416 netdev->features |= NETIF_F_IP_CSUM;
417 netdev->features |= NETIF_F_TSO;
420 netdev->features |= NETIF_F_HIGHDMA;
422 if (pci_enable_msi(pdev))
423 adapter->flags &= ~NETXEN_NIC_MSI_ENABLED;
425 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
427 netdev->irq = pdev->irq;
428 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
431 * Set the CRB window to invalid. If any register in window 0 is
432 * accessed it should set the window to 0 and then reset it to 1.
434 adapter->curr_window = 255;
436 /* initialize the adapter */
437 netxen_initialize_adapter_hw(adapter);
440 * Adapter in our case is quad port so initialize it before
441 * initializing the ports
444 netxen_initialize_adapter_ops(adapter);
446 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
447 if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) ||
448 (adapter->ahw.boardcfg.board_type ==
449 NETXEN_BRDTYPE_P2_SB31_2G))
450 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
452 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS;
453 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
454 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
456 cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
457 if (cmd_buf_arr == NULL) {
459 "%s: Could not allocate cmd_buf_arr memory:%d\n",
460 netxen_nic_driver_name, (int)TX_RINGSIZE);
462 goto err_out_free_adapter;
464 memset(cmd_buf_arr, 0, TX_RINGSIZE);
465 adapter->cmd_buf_arr = cmd_buf_arr;
467 for (i = 0; i < MAX_RCV_CTX; ++i) {
468 recv_ctx = &adapter->recv_ctx[i];
469 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
470 rcv_desc = &recv_ctx->rcv_desc[ring];
471 switch (RCV_DESC_TYPE(ring)) {
472 case RCV_DESC_NORMAL:
473 rcv_desc->max_rx_desc_count =
474 adapter->max_rx_desc_count;
475 rcv_desc->flags = RCV_DESC_NORMAL;
476 rcv_desc->dma_size = RX_DMA_MAP_LEN;
477 rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH;
481 rcv_desc->max_rx_desc_count =
482 adapter->max_jumbo_rx_desc_count;
483 rcv_desc->flags = RCV_DESC_JUMBO;
484 rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN;
485 rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH;
489 rcv_desc->max_rx_desc_count =
490 adapter->max_lro_rx_desc_count;
491 rcv_desc->flags = RCV_DESC_LRO;
492 rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN;
493 rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
497 rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *)
498 vmalloc(RCV_BUFFSIZE);
500 if (rcv_desc->rx_buf_arr == NULL) {
501 printk(KERN_ERR "%s: Could not allocate "
502 "rcv_desc->rx_buf_arr memory:%d\n",
503 netxen_nic_driver_name,
506 goto err_out_free_rx_buffer;
508 memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE);
513 netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */
515 /* Mezz cards have PCI function 0,2,3 enabled */
516 if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ)
517 && (pci_func_id >= 2))
518 adapter->portnum = pci_func_id - 2;
521 if(adapter->portnum == 0) {
522 netxen_pinit_from_rom(adapter, 0);
524 netxen_load_firmware(adapter);
528 init_timer(&adapter->watchdog_timer);
529 adapter->ahw.xg_linkup = 0;
530 adapter->watchdog_timer.function = &netxen_watchdog;
531 adapter->watchdog_timer.data = (unsigned long)adapter;
532 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
533 adapter->ahw.pdev = pdev;
534 adapter->ahw.revision_id = pdev->revision;
536 /* make sure Window == 1 */
537 netxen_nic_pci_change_crbwindow(adapter, 1);
539 netxen_nic_update_cmd_producer(adapter, 0);
540 netxen_nic_update_cmd_consumer(adapter, 0);
541 writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO));
543 if (netxen_is_flash_supported(adapter) == 0 &&
544 netxen_get_flash_mac_addr(adapter, mac_addr) == 0)
550 unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum];
551 netdev->dev_addr[0] = *(p + 5);
552 netdev->dev_addr[1] = *(p + 4);
553 netdev->dev_addr[2] = *(p + 3);
554 netdev->dev_addr[3] = *(p + 2);
555 netdev->dev_addr[4] = *(p + 1);
556 netdev->dev_addr[5] = *(p + 0);
558 memcpy(netdev->perm_addr, netdev->dev_addr,
560 if (!is_valid_ether_addr(netdev->perm_addr)) {
561 printk(KERN_ERR "%s: Bad MAC address %s.\n",
562 netxen_nic_driver_name,
563 print_mac(mac, netdev->dev_addr));
565 if (adapter->macaddr_set)
566 adapter->macaddr_set(adapter,
571 if (adapter->portnum == 0) {
572 err = netxen_initialize_adapter_offload(adapter);
574 goto err_out_free_rx_buffer;
575 val = readl(NETXEN_CRB_NORMALIZE(adapter,
576 NETXEN_CAM_RAM(0x1fc)));
577 if (val == 0x55555555) {
578 /* This is the first boot after power up */
579 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val);
582 netxen_nic_write_w0(adapter, NETXEN_PCIE_REG(0x4), val);
583 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val);
585 printk(KERN_ERR "%s: failed to set MSI bit in PCI-e reg\n",
586 netxen_nic_driver_name);
588 val = readl(NETXEN_CRB_NORMALIZE(adapter,
589 NETXEN_ROMUSB_GLB_SW_RESET));
590 printk(KERN_INFO"NetXen: read 0x%08x for reset reg.\n",val);
591 if (val != 0x80000f) {
592 /* clear the register for future unloads/loads */
593 writel(0, NETXEN_CRB_NORMALIZE(adapter,
594 NETXEN_CAM_RAM(0x1fc)));
595 printk(KERN_ERR "ERROR in NetXen HW init sequence.\n");
597 goto err_out_free_dev;
601 /* clear the register for future unloads/loads */
602 writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
603 printk(KERN_INFO "State: 0x%0x\n",
604 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
607 * Tell the hardware our version number.
609 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
610 | ((_NETXEN_NIC_LINUX_MINOR << 8))
611 | (_NETXEN_NIC_LINUX_SUBVERSION);
612 writel(i, NETXEN_CRB_NORMALIZE(adapter, CRB_DRIVER_VERSION));
614 /* Unlock the HW, prompting the boot sequence */
616 NETXEN_CRB_NORMALIZE(adapter,
617 NETXEN_ROMUSB_GLB_PEGTUNE_DONE));
618 /* Handshake with the card before we register the devices. */
619 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
623 * See if the firmware gave us a virtual-physical port mapping.
625 i = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_V2P(adapter->portnum)));
627 physical_port[adapter->portnum] = i;
629 netif_carrier_off(netdev);
630 netif_stop_queue(netdev);
632 if ((err = register_netdev(netdev))) {
633 printk(KERN_ERR "%s: register_netdev failed port #%d"
634 " aborting\n", netxen_nic_driver_name,
637 goto err_out_free_dev;
640 pci_set_drvdata(pdev, adapter);
642 switch (adapter->ahw.board_type) {
644 printk(KERN_INFO "%s: QUAD GbE board initialized\n",
645 netxen_nic_driver_name);
648 case NETXEN_NIC_XGBE:
649 printk(KERN_INFO "%s: XGbE board initialized\n",
650 netxen_nic_driver_name);
654 adapter->driver_mismatch = 0;
659 if (adapter->portnum == 0)
660 netxen_free_adapter_offload(adapter);
662 err_out_free_rx_buffer:
663 for (i = 0; i < MAX_RCV_CTX; ++i) {
664 recv_ctx = &adapter->recv_ctx[i];
665 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
666 rcv_desc = &recv_ctx->rcv_desc[ring];
667 if (rcv_desc->rx_buf_arr != NULL) {
668 vfree(rcv_desc->rx_buf_arr);
669 rcv_desc->rx_buf_arr = NULL;
675 err_out_free_adapter:
676 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
677 pci_disable_msi(pdev);
679 pci_set_drvdata(pdev, NULL);
696 pci_release_regions(pdev);
698 err_out_disable_pdev:
699 pci_disable_device(pdev);
703 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
705 struct netxen_adapter *adapter;
706 struct net_device *netdev;
707 struct netxen_rx_buffer *buffer;
708 struct netxen_recv_context *recv_ctx;
709 struct netxen_rcv_desc_ctx *rcv_desc;
711 static int init_firmware_done = 0;
713 adapter = pci_get_drvdata(pdev);
717 netdev = adapter->netdev;
719 unregister_netdev(netdev);
721 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
722 init_firmware_done++;
723 netxen_free_hw_resources(adapter);
726 for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) {
727 recv_ctx = &adapter->recv_ctx[ctxid];
728 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
729 rcv_desc = &recv_ctx->rcv_desc[ring];
730 for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) {
731 buffer = &(rcv_desc->rx_buf_arr[i]);
732 if (buffer->state == NETXEN_BUFFER_FREE)
734 pci_unmap_single(pdev, buffer->dma,
737 if (buffer->skb != NULL)
738 dev_kfree_skb_any(buffer->skb);
740 vfree(rcv_desc->rx_buf_arr);
744 vfree(adapter->cmd_buf_arr);
746 if (adapter->portnum == 0) {
747 if (init_firmware_done) {
750 if (dma_watchdog_shutdown_request(adapter) == 1)
753 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
758 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
761 /* clear the register for future unloads/loads */
762 writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
763 printk(KERN_INFO "State: 0x%0x\n",
764 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
766 /* leave the hw in the same state as reboot */
767 writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
768 netxen_pinit_from_rom(adapter, 0);
770 netxen_load_firmware(adapter);
771 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
774 /* clear the register for future unloads/loads */
775 writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
776 printk(KERN_INFO "State: 0x%0x\n",
777 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
781 if (dma_watchdog_shutdown_request(adapter) == 1)
784 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
789 netxen_free_adapter_offload(adapter);
791 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
797 free_irq(adapter->irq, adapter);
799 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
800 pci_disable_msi(pdev);
802 iounmap(adapter->ahw.db_base);
803 iounmap(adapter->ahw.pci_base0);
804 iounmap(adapter->ahw.pci_base1);
805 iounmap(adapter->ahw.pci_base2);
807 pci_release_regions(pdev);
808 pci_disable_device(pdev);
809 pci_set_drvdata(pdev, NULL);
815 * Called when a network interface is made active
816 * @returns 0 on success, negative value on failure
818 static int netxen_nic_open(struct net_device *netdev)
820 struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv;
823 irq_handler_t handler;
824 unsigned long flags = IRQF_SAMPLE_RANDOM;
826 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
827 err = netxen_init_firmware(adapter);
829 printk(KERN_ERR "Failed to init firmware\n");
832 netxen_nic_flash_print(adapter);
834 /* setup all the resources for the Phantom... */
835 /* this include the descriptors for rcv, tx, and status */
836 netxen_nic_clear_stats(adapter);
837 err = netxen_nic_hw_resources(adapter);
839 printk(KERN_ERR "Error in setting hw resources:%d\n",
843 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
844 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++)
845 netxen_post_rx_buffers(adapter, ctx, ring);
847 adapter->irq = adapter->ahw.pdev->irq;
848 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
849 handler = netxen_msi_intr;
851 flags |= IRQF_SHARED;
852 handler = netxen_intr;
854 err = request_irq(adapter->irq, handler,
855 flags, netdev->name, adapter);
857 printk(KERN_ERR "request_irq failed with: %d\n", err);
858 netxen_free_hw_resources(adapter);
862 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
864 /* Done here again so that even if phantom sw overwrote it,
866 if (adapter->init_port
867 && adapter->init_port(adapter, adapter->portnum) != 0) {
868 printk(KERN_ERR "%s: Failed to initialize port %d\n",
869 netxen_nic_driver_name, adapter->portnum);
872 if (adapter->macaddr_set)
873 adapter->macaddr_set(adapter, netdev->dev_addr);
875 netxen_nic_set_link_parameters(adapter);
877 netxen_nic_set_multi(netdev);
878 if (adapter->set_mtu)
879 adapter->set_mtu(adapter, netdev->mtu);
881 if (!adapter->driver_mismatch)
882 mod_timer(&adapter->watchdog_timer, jiffies);
884 napi_enable(&adapter->napi);
885 netxen_nic_enable_int(adapter);
887 if (!adapter->driver_mismatch)
888 netif_start_queue(netdev);
894 * netxen_nic_close - Disables a network interface entry point
896 static int netxen_nic_close(struct net_device *netdev)
898 struct netxen_adapter *adapter = netdev_priv(netdev);
900 struct netxen_cmd_buffer *cmd_buff;
901 struct netxen_skb_frag *buffrag;
903 netif_carrier_off(netdev);
904 netif_stop_queue(netdev);
905 napi_disable(&adapter->napi);
907 if (adapter->stop_port)
908 adapter->stop_port(adapter);
910 netxen_nic_disable_int(adapter);
912 cmd_buff = adapter->cmd_buf_arr;
913 for (i = 0; i < adapter->max_tx_desc_count; i++) {
914 buffrag = cmd_buff->frag_array;
916 pci_unmap_single(adapter->pdev, buffrag->dma,
917 buffrag->length, PCI_DMA_TODEVICE);
920 for (j = 0; j < cmd_buff->frag_count; j++) {
923 pci_unmap_page(adapter->pdev, buffrag->dma,
929 /* Free the skb we received in netxen_nic_xmit_frame */
931 dev_kfree_skb_any(cmd_buff->skb);
932 cmd_buff->skb = NULL;
936 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
937 FLUSH_SCHEDULED_WORK();
938 del_timer_sync(&adapter->watchdog_timer);
944 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
946 struct netxen_adapter *adapter = netdev_priv(netdev);
947 struct netxen_hardware_context *hw = &adapter->ahw;
948 unsigned int first_seg_len = skb->len - skb->data_len;
949 struct netxen_skb_frag *buffrag;
952 u32 producer, consumer;
953 u32 saved_producer = 0;
954 struct cmd_desc_type0 *hwdesc;
956 struct netxen_cmd_buffer *pbuf = NULL;
959 u32 num_txd = adapter->max_tx_desc_count;
961 frag_count = skb_shinfo(skb)->nr_frags + 1;
963 /* There 4 fragments per descriptor */
964 no_of_desc = (frag_count + 3) >> 2;
965 if (netdev->features & NETIF_F_TSO) {
966 if (skb_shinfo(skb)->gso_size > 0) {
969 if ((ip_hdrlen(skb) + tcp_hdrlen(skb) +
970 sizeof(struct ethhdr)) >
971 (sizeof(struct cmd_desc_type0) - 2)) {
977 producer = adapter->cmd_producer;
979 consumer = adapter->last_cmd_consumer;
980 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
981 netif_stop_queue(netdev);
983 return NETDEV_TX_BUSY;
986 /* Copy the descriptors into the hardware */
987 saved_producer = producer;
988 hwdesc = &hw->cmd_desc_head[producer];
989 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
990 /* Take skb->data itself */
991 pbuf = &adapter->cmd_buf_arr[producer];
992 if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) {
993 pbuf->mss = skb_shinfo(skb)->gso_size;
994 hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
999 pbuf->total_length = skb->len;
1001 pbuf->cmd = TX_ETHER_PKT;
1002 pbuf->frag_count = frag_count;
1003 pbuf->port = adapter->portnum;
1004 buffrag = &pbuf->frag_array[0];
1005 buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
1007 buffrag->length = first_seg_len;
1008 netxen_set_cmd_desc_totallength(hwdesc, skb->len);
1009 netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count);
1010 netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT);
1012 netxen_set_cmd_desc_port(hwdesc, adapter->portnum);
1013 netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum);
1014 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1015 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1017 for (i = 1, k = 1; i < frag_count; i++, k++) {
1018 struct skb_frag_struct *frag;
1020 unsigned long offset;
1021 dma_addr_t temp_dma;
1023 /* move to next desc. if there is a need */
1024 if ((i & 0x3) == 0) {
1026 producer = get_next_index(producer, num_txd);
1027 hwdesc = &hw->cmd_desc_head[producer];
1028 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1029 pbuf = &adapter->cmd_buf_arr[producer];
1032 frag = &skb_shinfo(skb)->frags[i - 1];
1034 offset = frag->page_offset;
1037 temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
1038 len, PCI_DMA_TODEVICE);
1041 buffrag->dma = temp_dma;
1042 buffrag->length = temp_len;
1046 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1047 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1050 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1051 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1054 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1055 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1058 hwdesc->buffer4_length = cpu_to_le16(temp_len);
1059 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1064 producer = get_next_index(producer, num_txd);
1066 /* might change opcode to TX_TCP_LSO */
1067 netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb);
1069 /* For LSO, we need to copy the MAC/IP/TCP headers into
1070 * the descriptor ring
1072 if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer])
1074 int hdr_len, first_hdr_len, more_hdr;
1075 hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length;
1076 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1077 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1080 first_hdr_len = hdr_len;
1083 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1084 hwdesc = &hw->cmd_desc_head[producer];
1085 pbuf = &adapter->cmd_buf_arr[producer];
1088 /* copy the first 64 bytes */
1089 memcpy(((void *)hwdesc) + 2,
1090 (void *)(skb->data), first_hdr_len);
1091 producer = get_next_index(producer, num_txd);
1094 hwdesc = &hw->cmd_desc_head[producer];
1095 pbuf = &adapter->cmd_buf_arr[producer];
1097 /* copy the next 64 bytes - should be enough except
1098 * for pathological case
1100 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1104 producer = get_next_index(producer, num_txd);
1108 adapter->cmd_producer = producer;
1109 adapter->stats.txbytes += skb->len;
1111 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
1113 adapter->stats.xmitcalled++;
1114 netdev->trans_start = jiffies;
1116 return NETDEV_TX_OK;
1119 static void netxen_watchdog(unsigned long v)
1121 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1123 SCHEDULE_WORK(&adapter->watchdog_task);
1126 static void netxen_tx_timeout(struct net_device *netdev)
1128 struct netxen_adapter *adapter = (struct netxen_adapter *)
1129 netdev_priv(netdev);
1130 SCHEDULE_WORK(&adapter->tx_timeout_task);
1133 static void netxen_tx_timeout_task(struct work_struct *work)
1135 struct netxen_adapter *adapter =
1136 container_of(work, struct netxen_adapter, tx_timeout_task);
1138 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1139 netxen_nic_driver_name, adapter->netdev->name);
1141 netxen_nic_disable_int(adapter);
1142 napi_disable(&adapter->napi);
1144 adapter->netdev->trans_start = jiffies;
1146 napi_enable(&adapter->napi);
1147 netxen_nic_enable_int(adapter);
1148 netif_wake_queue(adapter->netdev);
1152 netxen_handle_int(struct netxen_adapter *adapter)
1154 netxen_nic_disable_int(adapter);
1155 napi_schedule(&adapter->napi);
1158 irqreturn_t netxen_intr(int irq, void *data)
1160 struct netxen_adapter *adapter = data;
1163 our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
1164 /* not our interrupt */
1165 if ((our_int & (0x80 << adapter->portnum)) == 0)
1168 if (adapter->intr_scheme == INTR_SCHEME_PERPORT) {
1169 /* claim interrupt */
1170 writel(our_int & ~((u32)(0x80 << adapter->portnum)),
1171 NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
1174 netxen_handle_int(adapter);
1179 irqreturn_t netxen_msi_intr(int irq, void *data)
1181 struct netxen_adapter *adapter = data;
1183 netxen_handle_int(adapter);
1187 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1189 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
1194 tx_complete = netxen_process_cmd_ring(adapter);
1197 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1199 * Fairness issue. This will give undue weight to the
1200 * receive context 0.
1204 * To avoid starvation, we give each of our receivers,
1205 * a fraction of the quota. Sometimes, it might happen that we
1206 * have enough quota to process every packet, but since all the
1207 * packets are on one context, it gets only half of the quota,
1208 * and ends up not processing it.
1210 work_done += netxen_process_rcv_ring(adapter, ctx,
1211 budget / MAX_RCV_CTX);
1214 if ((work_done < budget) && tx_complete) {
1215 netif_rx_complete(adapter->netdev, &adapter->napi);
1216 netxen_nic_enable_int(adapter);
1222 #ifdef CONFIG_NET_POLL_CONTROLLER
1223 static void netxen_nic_poll_controller(struct net_device *netdev)
1225 struct netxen_adapter *adapter = netdev_priv(netdev);
1226 disable_irq(adapter->irq);
1227 netxen_intr(adapter->irq, adapter);
1228 enable_irq(adapter->irq);
1232 static struct pci_driver netxen_driver = {
1233 .name = netxen_nic_driver_name,
1234 .id_table = netxen_pci_tbl,
1235 .probe = netxen_nic_probe,
1236 .remove = __devexit_p(netxen_nic_remove)
1239 /* Driver Registration on NetXen card */
1241 static int __init netxen_init_module(void)
1243 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1246 return pci_register_driver(&netxen_driver);
1249 module_init(netxen_init_module);
1251 static void __exit netxen_exit_module(void)
1254 * Wait for some time to allow the dma to drain, if any.
1257 pci_unregister_driver(&netxen_driver);
1258 destroy_workqueue(netxen_workq);
1261 module_exit(netxen_exit_module);