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]));
173 if (adapter->intr_scheme != -1 &&
174 adapter->intr_scheme != INTR_SCHEME_PERPORT)
175 writel(mask,PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK));
177 if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
180 PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_STATUS));
181 mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR));
188 printk(KERN_NOTICE "%s: Failed to disable interrupt completely\n",
189 netxen_nic_driver_name);
192 if (adapter->msi_mode == MSI_MODE_MULTIFUNC) {
193 writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter,
194 msi_tgt_status[pci_fn]));
199 static void netxen_nic_enable_int(struct netxen_adapter *adapter)
202 int port = adapter->portnum;
204 DPRINTK(1, INFO, "Entered ISR Enable \n");
206 if (adapter->intr_scheme != -1 &&
207 adapter->intr_scheme != INTR_SCHEME_PERPORT) {
208 switch (adapter->ahw.board_type) {
212 case NETXEN_NIC_XGBE:
220 writel(mask, PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK));
223 writel(0x1, NETXEN_CRB_NORMALIZE(adapter, sw_int_mask[port]));
225 if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
227 if (adapter->intr_scheme != -1 &&
228 adapter->intr_scheme != INTR_SCHEME_PERPORT) {
229 writel(0X0, NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
232 PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_MASK));
235 DPRINTK(1, INFO, "Done with enable Int\n");
241 * The Linux system will invoke this after identifying the vendor ID and
242 * device Id in the pci_tbl supported by this module.
244 * A quad port card has one operational PCI config space, (function 0),
245 * which is used to access all four ports.
247 * This routine will initialize the adapter, and setup the global parameters
248 * along with the port's specific structure.
251 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
253 struct net_device *netdev = NULL;
254 struct netxen_adapter *adapter = NULL;
255 void __iomem *mem_ptr0 = NULL;
256 void __iomem *mem_ptr1 = NULL;
257 void __iomem *mem_ptr2 = NULL;
258 unsigned long first_page_group_end;
259 unsigned long first_page_group_start;
262 u8 __iomem *db_ptr = NULL;
263 unsigned long mem_base, mem_len, db_base, db_len;
264 int pci_using_dac, i = 0, err;
266 struct netxen_recv_context *recv_ctx = NULL;
267 struct netxen_rcv_desc_ctx *rcv_desc = NULL;
268 struct netxen_cmd_buffer *cmd_buf_arr = NULL;
269 __le64 mac_addr[FLASH_NUM_PORTS + 1];
272 int pci_func_id = PCI_FUNC(pdev->devfn);
273 DECLARE_MAC_BUF(mac);
275 printk(KERN_INFO "%s \n", netxen_nic_driver_string);
277 if (pdev->class != 0x020000) {
278 printk(KERN_ERR"NetXen function %d, class %x will not "
279 "be enabled.\n",pci_func_id, pdev->class);
282 if ((err = pci_enable_device(pdev)))
284 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
286 goto err_out_disable_pdev;
289 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
290 goto err_out_disable_pdev;
292 pci_set_master(pdev);
293 if (pdev->revision == NX_P2_C1 &&
294 (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) &&
295 (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) {
298 if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) ||
299 (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)))
300 goto err_out_free_res;
306 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
308 printk(KERN_ERR"%s: Failed to allocate memory for the "
309 "device block.Check system memory resource"
310 " usage.\n", netxen_nic_driver_name);
311 goto err_out_free_res;
314 SET_NETDEV_DEV(netdev, &pdev->dev);
316 adapter = netdev->priv;
318 adapter->ahw.pdev = pdev;
319 adapter->ahw.pci_func = pci_func_id;
321 /* remap phys address */
322 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
323 mem_len = pci_resource_len(pdev, 0);
325 /* 128 Meg of memory */
326 if (mem_len == NETXEN_PCI_128MB_SIZE) {
327 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
328 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
329 SECOND_PAGE_GROUP_SIZE);
330 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
331 THIRD_PAGE_GROUP_SIZE);
332 first_page_group_start = FIRST_PAGE_GROUP_START;
333 first_page_group_end = FIRST_PAGE_GROUP_END;
334 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
335 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
336 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
337 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
338 first_page_group_start = 0;
339 first_page_group_end = 0;
342 goto err_out_free_netdev;
345 if ((!mem_ptr0 && mem_len == NETXEN_PCI_128MB_SIZE) ||
346 !mem_ptr1 || !mem_ptr2) {
348 "Cannot remap adapter memory aborting.:"
349 "0 -> %p, 1 -> %p, 2 -> %p\n",
350 mem_ptr0, mem_ptr1, mem_ptr2);
353 goto err_out_iounmap;
355 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
356 db_len = pci_resource_len(pdev, 4);
359 printk(KERN_ERR "%s: doorbell is disabled\n",
360 netxen_nic_driver_name);
362 goto err_out_iounmap;
364 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
367 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
369 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
370 netxen_nic_driver_name);
372 goto err_out_iounmap;
374 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
376 adapter->ahw.pci_base0 = mem_ptr0;
377 adapter->ahw.first_page_group_start = first_page_group_start;
378 adapter->ahw.first_page_group_end = first_page_group_end;
379 adapter->ahw.pci_base1 = mem_ptr1;
380 adapter->ahw.pci_base2 = mem_ptr2;
381 adapter->ahw.db_base = db_ptr;
382 adapter->ahw.db_len = db_len;
384 adapter->netdev = netdev;
385 adapter->pdev = pdev;
387 netif_napi_add(netdev, &adapter->napi,
388 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
390 /* this will be read from FW later */
391 adapter->intr_scheme = -1;
392 adapter->msi_mode = -1;
394 /* This will be reset for mezz cards */
395 adapter->portnum = pci_func_id;
396 adapter->status &= ~NETXEN_NETDEV_STATUS;
397 adapter->rx_csum = 1;
399 netdev->open = netxen_nic_open;
400 netdev->stop = netxen_nic_close;
401 netdev->hard_start_xmit = netxen_nic_xmit_frame;
402 netdev->get_stats = netxen_nic_get_stats;
403 netdev->set_multicast_list = netxen_nic_set_multi;
404 netdev->set_mac_address = netxen_nic_set_mac;
405 netdev->change_mtu = netxen_nic_change_mtu;
406 netdev->tx_timeout = netxen_tx_timeout;
407 netdev->watchdog_timeo = 2*HZ;
409 netxen_nic_change_mtu(netdev, netdev->mtu);
411 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
412 #ifdef CONFIG_NET_POLL_CONTROLLER
413 netdev->poll_controller = netxen_nic_poll_controller;
415 /* ScatterGather support */
416 netdev->features = NETIF_F_SG;
417 netdev->features |= NETIF_F_IP_CSUM;
418 netdev->features |= NETIF_F_TSO;
421 netdev->features |= NETIF_F_HIGHDMA;
423 if (pci_enable_msi(pdev))
424 adapter->flags &= ~NETXEN_NIC_MSI_ENABLED;
426 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
428 netdev->irq = pdev->irq;
429 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
432 * Set the CRB window to invalid. If any register in window 0 is
433 * accessed it should set the window to 0 and then reset it to 1.
435 adapter->curr_window = 255;
437 /* initialize the adapter */
438 netxen_initialize_adapter_hw(adapter);
441 * Adapter in our case is quad port so initialize it before
442 * initializing the ports
445 netxen_initialize_adapter_ops(adapter);
447 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
448 if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) ||
449 (adapter->ahw.boardcfg.board_type ==
450 NETXEN_BRDTYPE_P2_SB31_2G))
451 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
453 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS;
454 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
455 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
457 cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
458 if (cmd_buf_arr == NULL) {
460 "%s: Could not allocate cmd_buf_arr memory:%d\n",
461 netxen_nic_driver_name, (int)TX_RINGSIZE);
463 goto err_out_free_adapter;
465 memset(cmd_buf_arr, 0, TX_RINGSIZE);
466 adapter->cmd_buf_arr = cmd_buf_arr;
468 for (i = 0; i < MAX_RCV_CTX; ++i) {
469 recv_ctx = &adapter->recv_ctx[i];
470 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
471 rcv_desc = &recv_ctx->rcv_desc[ring];
472 switch (RCV_DESC_TYPE(ring)) {
473 case RCV_DESC_NORMAL:
474 rcv_desc->max_rx_desc_count =
475 adapter->max_rx_desc_count;
476 rcv_desc->flags = RCV_DESC_NORMAL;
477 rcv_desc->dma_size = RX_DMA_MAP_LEN;
478 rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH;
482 rcv_desc->max_rx_desc_count =
483 adapter->max_jumbo_rx_desc_count;
484 rcv_desc->flags = RCV_DESC_JUMBO;
485 rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN;
486 rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH;
490 rcv_desc->max_rx_desc_count =
491 adapter->max_lro_rx_desc_count;
492 rcv_desc->flags = RCV_DESC_LRO;
493 rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN;
494 rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
498 rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *)
499 vmalloc(RCV_BUFFSIZE);
501 if (rcv_desc->rx_buf_arr == NULL) {
502 printk(KERN_ERR "%s: Could not allocate "
503 "rcv_desc->rx_buf_arr memory:%d\n",
504 netxen_nic_driver_name,
507 goto err_out_free_rx_buffer;
509 memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE);
514 netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */
516 /* Mezz cards have PCI function 0,2,3 enabled */
517 if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ)
518 && (pci_func_id >= 2))
519 adapter->portnum = pci_func_id - 2;
522 if(adapter->portnum == 0) {
523 netxen_pinit_from_rom(adapter, 0);
525 netxen_load_firmware(adapter);
529 init_timer(&adapter->watchdog_timer);
530 adapter->ahw.xg_linkup = 0;
531 adapter->watchdog_timer.function = &netxen_watchdog;
532 adapter->watchdog_timer.data = (unsigned long)adapter;
533 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
534 adapter->ahw.pdev = pdev;
535 adapter->ahw.revision_id = pdev->revision;
537 /* make sure Window == 1 */
538 netxen_nic_pci_change_crbwindow(adapter, 1);
540 netxen_nic_update_cmd_producer(adapter, 0);
541 netxen_nic_update_cmd_consumer(adapter, 0);
542 writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO));
544 if (netxen_is_flash_supported(adapter) == 0 &&
545 netxen_get_flash_mac_addr(adapter, mac_addr) == 0)
551 unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum];
552 netdev->dev_addr[0] = *(p + 5);
553 netdev->dev_addr[1] = *(p + 4);
554 netdev->dev_addr[2] = *(p + 3);
555 netdev->dev_addr[3] = *(p + 2);
556 netdev->dev_addr[4] = *(p + 1);
557 netdev->dev_addr[5] = *(p + 0);
559 memcpy(netdev->perm_addr, netdev->dev_addr,
561 if (!is_valid_ether_addr(netdev->perm_addr)) {
562 printk(KERN_ERR "%s: Bad MAC address %s.\n",
563 netxen_nic_driver_name,
564 print_mac(mac, netdev->dev_addr));
566 if (adapter->macaddr_set)
567 adapter->macaddr_set(adapter,
572 if (adapter->portnum == 0) {
573 err = netxen_initialize_adapter_offload(adapter);
575 goto err_out_free_rx_buffer;
576 val = readl(NETXEN_CRB_NORMALIZE(adapter,
577 NETXEN_CAM_RAM(0x1fc)));
578 if (val == 0x55555555) {
579 /* This is the first boot after power up */
580 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val);
583 netxen_nic_write_w0(adapter, NETXEN_PCIE_REG(0x4), val);
584 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val);
586 printk(KERN_ERR "%s: failed to set MSI bit in PCI-e reg\n",
587 netxen_nic_driver_name);
589 val = readl(NETXEN_CRB_NORMALIZE(adapter,
590 NETXEN_ROMUSB_GLB_SW_RESET));
591 printk(KERN_INFO"NetXen: read 0x%08x for reset reg.\n",val);
592 if (val != 0x80000f) {
593 /* clear the register for future unloads/loads */
594 writel(0, NETXEN_CRB_NORMALIZE(adapter,
595 NETXEN_CAM_RAM(0x1fc)));
596 printk(KERN_ERR "ERROR in NetXen HW init sequence.\n");
598 goto err_out_free_dev;
602 /* clear the register for future unloads/loads */
603 writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
604 printk(KERN_INFO "State: 0x%0x\n",
605 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
608 * Tell the hardware our version number.
610 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
611 | ((_NETXEN_NIC_LINUX_MINOR << 8))
612 | (_NETXEN_NIC_LINUX_SUBVERSION);
613 writel(i, NETXEN_CRB_NORMALIZE(adapter, CRB_DRIVER_VERSION));
615 /* Unlock the HW, prompting the boot sequence */
617 NETXEN_CRB_NORMALIZE(adapter,
618 NETXEN_ROMUSB_GLB_PEGTUNE_DONE));
619 /* Handshake with the card before we register the devices. */
620 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
624 * See if the firmware gave us a virtual-physical port mapping.
626 i = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_V2P(adapter->portnum)));
628 physical_port[adapter->portnum] = i;
630 netif_carrier_off(netdev);
631 netif_stop_queue(netdev);
633 if ((err = register_netdev(netdev))) {
634 printk(KERN_ERR "%s: register_netdev failed port #%d"
635 " aborting\n", netxen_nic_driver_name,
638 goto err_out_free_dev;
641 pci_set_drvdata(pdev, adapter);
643 switch (adapter->ahw.board_type) {
645 printk(KERN_INFO "%s: QUAD GbE board initialized\n",
646 netxen_nic_driver_name);
649 case NETXEN_NIC_XGBE:
650 printk(KERN_INFO "%s: XGbE board initialized\n",
651 netxen_nic_driver_name);
655 adapter->driver_mismatch = 0;
660 if (adapter->portnum == 0)
661 netxen_free_adapter_offload(adapter);
663 err_out_free_rx_buffer:
664 for (i = 0; i < MAX_RCV_CTX; ++i) {
665 recv_ctx = &adapter->recv_ctx[i];
666 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
667 rcv_desc = &recv_ctx->rcv_desc[ring];
668 if (rcv_desc->rx_buf_arr != NULL) {
669 vfree(rcv_desc->rx_buf_arr);
670 rcv_desc->rx_buf_arr = NULL;
676 err_out_free_adapter:
677 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
678 pci_disable_msi(pdev);
680 pci_set_drvdata(pdev, NULL);
697 pci_release_regions(pdev);
699 err_out_disable_pdev:
700 pci_disable_device(pdev);
704 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
706 struct netxen_adapter *adapter;
707 struct net_device *netdev;
708 struct netxen_rx_buffer *buffer;
709 struct netxen_recv_context *recv_ctx;
710 struct netxen_rcv_desc_ctx *rcv_desc;
712 static int init_firmware_done = 0;
714 adapter = pci_get_drvdata(pdev);
718 netdev = adapter->netdev;
720 unregister_netdev(netdev);
722 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
723 init_firmware_done++;
724 netxen_free_hw_resources(adapter);
727 for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) {
728 recv_ctx = &adapter->recv_ctx[ctxid];
729 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
730 rcv_desc = &recv_ctx->rcv_desc[ring];
731 for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) {
732 buffer = &(rcv_desc->rx_buf_arr[i]);
733 if (buffer->state == NETXEN_BUFFER_FREE)
735 pci_unmap_single(pdev, buffer->dma,
738 if (buffer->skb != NULL)
739 dev_kfree_skb_any(buffer->skb);
741 vfree(rcv_desc->rx_buf_arr);
745 vfree(adapter->cmd_buf_arr);
747 if (adapter->portnum == 0) {
748 if (init_firmware_done) {
751 if (dma_watchdog_shutdown_request(adapter) == 1)
754 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
759 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
762 /* clear the register for future unloads/loads */
763 writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
764 printk(KERN_INFO "State: 0x%0x\n",
765 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
767 /* leave the hw in the same state as reboot */
768 writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
769 netxen_pinit_from_rom(adapter, 0);
771 netxen_load_firmware(adapter);
772 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
775 /* clear the register for future unloads/loads */
776 writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
777 printk(KERN_INFO "State: 0x%0x\n",
778 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
782 if (dma_watchdog_shutdown_request(adapter) == 1)
785 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
790 netxen_free_adapter_offload(adapter);
792 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
798 free_irq(adapter->irq, adapter);
800 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
801 pci_disable_msi(pdev);
803 iounmap(adapter->ahw.db_base);
804 iounmap(adapter->ahw.pci_base0);
805 iounmap(adapter->ahw.pci_base1);
806 iounmap(adapter->ahw.pci_base2);
808 pci_release_regions(pdev);
809 pci_disable_device(pdev);
810 pci_set_drvdata(pdev, NULL);
816 * Called when a network interface is made active
817 * @returns 0 on success, negative value on failure
819 static int netxen_nic_open(struct net_device *netdev)
821 struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv;
824 irq_handler_t handler;
825 unsigned long flags = IRQF_SAMPLE_RANDOM;
827 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
828 err = netxen_init_firmware(adapter);
830 printk(KERN_ERR "Failed to init firmware\n");
833 netxen_nic_flash_print(adapter);
835 /* setup all the resources for the Phantom... */
836 /* this include the descriptors for rcv, tx, and status */
837 netxen_nic_clear_stats(adapter);
838 err = netxen_nic_hw_resources(adapter);
840 printk(KERN_ERR "Error in setting hw resources:%d\n",
844 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
845 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++)
846 netxen_post_rx_buffers(adapter, ctx, ring);
848 adapter->irq = adapter->ahw.pdev->irq;
849 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
850 handler = netxen_msi_intr;
852 flags |= IRQF_SHARED;
853 handler = netxen_intr;
855 err = request_irq(adapter->irq, handler,
856 flags, netdev->name, adapter);
858 printk(KERN_ERR "request_irq failed with: %d\n", err);
859 netxen_free_hw_resources(adapter);
863 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
865 /* Done here again so that even if phantom sw overwrote it,
867 if (adapter->init_port
868 && adapter->init_port(adapter, adapter->portnum) != 0) {
869 printk(KERN_ERR "%s: Failed to initialize port %d\n",
870 netxen_nic_driver_name, adapter->portnum);
873 if (adapter->macaddr_set)
874 adapter->macaddr_set(adapter, netdev->dev_addr);
876 netxen_nic_set_link_parameters(adapter);
878 netxen_nic_set_multi(netdev);
879 if (adapter->set_mtu)
880 adapter->set_mtu(adapter, netdev->mtu);
882 if (!adapter->driver_mismatch)
883 mod_timer(&adapter->watchdog_timer, jiffies);
885 napi_enable(&adapter->napi);
886 netxen_nic_enable_int(adapter);
888 if (!adapter->driver_mismatch)
889 netif_start_queue(netdev);
895 * netxen_nic_close - Disables a network interface entry point
897 static int netxen_nic_close(struct net_device *netdev)
899 struct netxen_adapter *adapter = netdev_priv(netdev);
901 struct netxen_cmd_buffer *cmd_buff;
902 struct netxen_skb_frag *buffrag;
904 netif_carrier_off(netdev);
905 netif_stop_queue(netdev);
906 napi_disable(&adapter->napi);
908 if (adapter->stop_port)
909 adapter->stop_port(adapter);
911 netxen_nic_disable_int(adapter);
913 cmd_buff = adapter->cmd_buf_arr;
914 for (i = 0; i < adapter->max_tx_desc_count; i++) {
915 buffrag = cmd_buff->frag_array;
917 pci_unmap_single(adapter->pdev, buffrag->dma,
918 buffrag->length, PCI_DMA_TODEVICE);
921 for (j = 0; j < cmd_buff->frag_count; j++) {
924 pci_unmap_page(adapter->pdev, buffrag->dma,
930 /* Free the skb we received in netxen_nic_xmit_frame */
932 dev_kfree_skb_any(cmd_buff->skb);
933 cmd_buff->skb = NULL;
937 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
938 FLUSH_SCHEDULED_WORK();
939 del_timer_sync(&adapter->watchdog_timer);
945 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
947 struct netxen_adapter *adapter = netdev_priv(netdev);
948 struct netxen_hardware_context *hw = &adapter->ahw;
949 unsigned int first_seg_len = skb->len - skb->data_len;
950 struct netxen_skb_frag *buffrag;
953 u32 producer, consumer;
954 u32 saved_producer = 0;
955 struct cmd_desc_type0 *hwdesc;
957 struct netxen_cmd_buffer *pbuf = NULL;
960 u32 num_txd = adapter->max_tx_desc_count;
962 frag_count = skb_shinfo(skb)->nr_frags + 1;
964 /* There 4 fragments per descriptor */
965 no_of_desc = (frag_count + 3) >> 2;
966 if (netdev->features & NETIF_F_TSO) {
967 if (skb_shinfo(skb)->gso_size > 0) {
970 if ((ip_hdrlen(skb) + tcp_hdrlen(skb) +
971 sizeof(struct ethhdr)) >
972 (sizeof(struct cmd_desc_type0) - 2)) {
978 producer = adapter->cmd_producer;
980 consumer = adapter->last_cmd_consumer;
981 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
982 netif_stop_queue(netdev);
984 return NETDEV_TX_BUSY;
987 /* Copy the descriptors into the hardware */
988 saved_producer = producer;
989 hwdesc = &hw->cmd_desc_head[producer];
990 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
991 /* Take skb->data itself */
992 pbuf = &adapter->cmd_buf_arr[producer];
993 if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) {
994 pbuf->mss = skb_shinfo(skb)->gso_size;
995 hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1000 pbuf->total_length = skb->len;
1002 pbuf->cmd = TX_ETHER_PKT;
1003 pbuf->frag_count = frag_count;
1004 pbuf->port = adapter->portnum;
1005 buffrag = &pbuf->frag_array[0];
1006 buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
1008 buffrag->length = first_seg_len;
1009 netxen_set_cmd_desc_totallength(hwdesc, skb->len);
1010 netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count);
1011 netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT);
1013 netxen_set_cmd_desc_port(hwdesc, adapter->portnum);
1014 netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum);
1015 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1016 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1018 for (i = 1, k = 1; i < frag_count; i++, k++) {
1019 struct skb_frag_struct *frag;
1021 unsigned long offset;
1022 dma_addr_t temp_dma;
1024 /* move to next desc. if there is a need */
1025 if ((i & 0x3) == 0) {
1027 producer = get_next_index(producer, num_txd);
1028 hwdesc = &hw->cmd_desc_head[producer];
1029 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1030 pbuf = &adapter->cmd_buf_arr[producer];
1033 frag = &skb_shinfo(skb)->frags[i - 1];
1035 offset = frag->page_offset;
1038 temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
1039 len, PCI_DMA_TODEVICE);
1042 buffrag->dma = temp_dma;
1043 buffrag->length = temp_len;
1047 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1048 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1051 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1052 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1055 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1056 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1059 hwdesc->buffer4_length = cpu_to_le16(temp_len);
1060 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1065 producer = get_next_index(producer, num_txd);
1067 /* might change opcode to TX_TCP_LSO */
1068 netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb);
1070 /* For LSO, we need to copy the MAC/IP/TCP headers into
1071 * the descriptor ring
1073 if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer])
1075 int hdr_len, first_hdr_len, more_hdr;
1076 hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length;
1077 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1078 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1081 first_hdr_len = hdr_len;
1084 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1085 hwdesc = &hw->cmd_desc_head[producer];
1086 pbuf = &adapter->cmd_buf_arr[producer];
1089 /* copy the first 64 bytes */
1090 memcpy(((void *)hwdesc) + 2,
1091 (void *)(skb->data), first_hdr_len);
1092 producer = get_next_index(producer, num_txd);
1095 hwdesc = &hw->cmd_desc_head[producer];
1096 pbuf = &adapter->cmd_buf_arr[producer];
1098 /* copy the next 64 bytes - should be enough except
1099 * for pathological case
1101 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1105 producer = get_next_index(producer, num_txd);
1109 adapter->cmd_producer = producer;
1110 adapter->stats.txbytes += skb->len;
1112 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
1114 adapter->stats.xmitcalled++;
1115 netdev->trans_start = jiffies;
1117 return NETDEV_TX_OK;
1120 static void netxen_watchdog(unsigned long v)
1122 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1124 SCHEDULE_WORK(&adapter->watchdog_task);
1127 static void netxen_tx_timeout(struct net_device *netdev)
1129 struct netxen_adapter *adapter = (struct netxen_adapter *)
1130 netdev_priv(netdev);
1131 SCHEDULE_WORK(&adapter->tx_timeout_task);
1134 static void netxen_tx_timeout_task(struct work_struct *work)
1136 struct netxen_adapter *adapter =
1137 container_of(work, struct netxen_adapter, tx_timeout_task);
1139 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1140 netxen_nic_driver_name, adapter->netdev->name);
1142 netxen_nic_disable_int(adapter);
1143 napi_disable(&adapter->napi);
1145 adapter->netdev->trans_start = jiffies;
1147 napi_enable(&adapter->napi);
1148 netxen_nic_enable_int(adapter);
1149 netif_wake_queue(adapter->netdev);
1153 netxen_handle_int(struct netxen_adapter *adapter)
1155 netxen_nic_disable_int(adapter);
1156 napi_schedule(&adapter->napi);
1159 irqreturn_t netxen_intr(int irq, void *data)
1161 struct netxen_adapter *adapter = data;
1164 our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
1165 /* not our interrupt */
1166 if ((our_int & (0x80 << adapter->portnum)) == 0)
1169 if (adapter->intr_scheme == INTR_SCHEME_PERPORT) {
1170 /* claim interrupt */
1171 writel(our_int & ~((u32)(0x80 << adapter->portnum)),
1172 NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
1175 netxen_handle_int(adapter);
1180 irqreturn_t netxen_msi_intr(int irq, void *data)
1182 struct netxen_adapter *adapter = data;
1184 netxen_handle_int(adapter);
1188 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1190 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
1195 tx_complete = netxen_process_cmd_ring(adapter);
1198 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1200 * Fairness issue. This will give undue weight to the
1201 * receive context 0.
1205 * To avoid starvation, we give each of our receivers,
1206 * a fraction of the quota. Sometimes, it might happen that we
1207 * have enough quota to process every packet, but since all the
1208 * packets are on one context, it gets only half of the quota,
1209 * and ends up not processing it.
1211 work_done += netxen_process_rcv_ring(adapter, ctx,
1212 budget / MAX_RCV_CTX);
1215 if ((work_done < budget) && tx_complete) {
1216 netif_rx_complete(adapter->netdev, &adapter->napi);
1217 netxen_nic_enable_int(adapter);
1223 #ifdef CONFIG_NET_POLL_CONTROLLER
1224 static void netxen_nic_poll_controller(struct net_device *netdev)
1226 struct netxen_adapter *adapter = netdev_priv(netdev);
1227 disable_irq(adapter->irq);
1228 netxen_intr(adapter->irq, adapter);
1229 enable_irq(adapter->irq);
1233 static struct pci_driver netxen_driver = {
1234 .name = netxen_nic_driver_name,
1235 .id_table = netxen_pci_tbl,
1236 .probe = netxen_nic_probe,
1237 .remove = __devexit_p(netxen_nic_remove)
1240 /* Driver Registration on NetXen card */
1242 static int __init netxen_init_module(void)
1244 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1247 return pci_register_driver(&netxen_driver);
1250 module_init(netxen_init_module);
1252 static void __exit netxen_exit_module(void)
1255 * Wait for some time to allow the dma to drain, if any.
1258 pci_unregister_driver(&netxen_driver);
1259 destroy_workqueue(netxen_workq);
1262 module_exit(netxen_exit_module);