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 #define DMA_32BIT_MASK 0x00000000ffffffffULL
57 #define DMA_35BIT_MASK 0x00000007ffffffffULL
59 /* Local functions to NetXen NIC driver */
60 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
61 const struct pci_device_id *ent);
62 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
63 static int netxen_nic_open(struct net_device *netdev);
64 static int netxen_nic_close(struct net_device *netdev);
65 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
66 static void netxen_tx_timeout(struct net_device *netdev);
67 static void netxen_tx_timeout_task(struct work_struct *work);
68 static void netxen_watchdog(unsigned long);
69 static int netxen_handle_int(struct netxen_adapter *, struct net_device *);
70 static int netxen_nic_poll(struct napi_struct *napi, int budget);
71 #ifdef CONFIG_NET_POLL_CONTROLLER
72 static void netxen_nic_poll_controller(struct net_device *netdev);
74 static irqreturn_t netxen_intr(int irq, void *data);
76 int physical_port[] = {0, 1, 2, 3};
78 /* PCI Device ID Table */
79 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
80 {PCI_DEVICE(0x4040, 0x0001)},
81 {PCI_DEVICE(0x4040, 0x0002)},
82 {PCI_DEVICE(0x4040, 0x0003)},
83 {PCI_DEVICE(0x4040, 0x0004)},
84 {PCI_DEVICE(0x4040, 0x0005)},
85 {PCI_DEVICE(0x4040, 0x0024)},
86 {PCI_DEVICE(0x4040, 0x0025)},
90 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
92 struct workqueue_struct *netxen_workq;
93 static void netxen_watchdog(unsigned long);
95 static inline void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
96 uint32_t crb_producer)
98 switch (adapter->portnum) {
100 writel(crb_producer, NETXEN_CRB_NORMALIZE
101 (adapter, CRB_CMD_PRODUCER_OFFSET));
104 writel(crb_producer, NETXEN_CRB_NORMALIZE
105 (adapter, CRB_CMD_PRODUCER_OFFSET_1));
108 writel(crb_producer, NETXEN_CRB_NORMALIZE
109 (adapter, CRB_CMD_PRODUCER_OFFSET_2));
112 writel(crb_producer, NETXEN_CRB_NORMALIZE
113 (adapter, CRB_CMD_PRODUCER_OFFSET_3));
116 printk(KERN_WARNING "We tried to update "
117 "CRB_CMD_PRODUCER_OFFSET for invalid "
118 "PCI function id %d\n",
124 static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
127 switch (adapter->portnum) {
129 writel(crb_consumer, NETXEN_CRB_NORMALIZE
130 (adapter, CRB_CMD_CONSUMER_OFFSET));
133 writel(crb_consumer, NETXEN_CRB_NORMALIZE
134 (adapter, CRB_CMD_CONSUMER_OFFSET_1));
137 writel(crb_consumer, NETXEN_CRB_NORMALIZE
138 (adapter, CRB_CMD_CONSUMER_OFFSET_2));
141 writel(crb_consumer, NETXEN_CRB_NORMALIZE
142 (adapter, CRB_CMD_CONSUMER_OFFSET_3));
145 printk(KERN_WARNING "We tried to update "
146 "CRB_CMD_PRODUCER_OFFSET for invalid "
147 "PCI function id %d\n",
153 #define ADAPTER_LIST_SIZE 12
154 int netxen_cards_found;
156 static void netxen_nic_disable_int(struct netxen_adapter *adapter)
158 uint32_t mask = 0x7ff;
161 DPRINTK(1, INFO, "Entered ISR Disable \n");
163 switch (adapter->portnum) {
165 writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_0));
168 writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_1));
171 writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_2));
174 writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_3));
178 if (adapter->intr_scheme != -1 &&
179 adapter->intr_scheme != INTR_SCHEME_PERPORT)
180 writel(mask,PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK));
182 /* Window = 0 or 1 */
183 if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
186 PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_STATUS));
187 mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR));
194 printk(KERN_NOTICE "%s: Failed to disable interrupt completely\n",
195 netxen_nic_driver_name);
199 DPRINTK(1, INFO, "Done with Disable Int\n");
202 static void netxen_nic_enable_int(struct netxen_adapter *adapter)
206 DPRINTK(1, INFO, "Entered ISR Enable \n");
208 if (adapter->intr_scheme != -1 &&
209 adapter->intr_scheme != INTR_SCHEME_PERPORT) {
210 switch (adapter->ahw.board_type) {
214 case NETXEN_NIC_XGBE:
222 writel(mask, PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK));
225 switch (adapter->portnum) {
227 writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_0));
230 writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_1));
233 writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_2));
236 writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_3));
240 if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
242 if (adapter->intr_scheme != -1 &&
243 adapter->intr_scheme != INTR_SCHEME_PERPORT) {
244 writel(0X0, NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
247 PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_MASK));
250 DPRINTK(1, INFO, "Done with enable Int\n");
256 * The Linux system will invoke this after identifying the vendor ID and
257 * device Id in the pci_tbl supported by this module.
259 * A quad port card has one operational PCI config space, (function 0),
260 * which is used to access all four ports.
262 * This routine will initialize the adapter, and setup the global parameters
263 * along with the port's specific structure.
266 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
268 struct net_device *netdev = NULL;
269 struct netxen_adapter *adapter = NULL;
270 void __iomem *mem_ptr0 = NULL;
271 void __iomem *mem_ptr1 = NULL;
272 void __iomem *mem_ptr2 = NULL;
273 unsigned long first_page_group_end;
274 unsigned long first_page_group_start;
277 u8 __iomem *db_ptr = NULL;
278 unsigned long mem_base, mem_len, db_base, db_len;
279 int pci_using_dac, i = 0, err;
281 struct netxen_recv_context *recv_ctx = NULL;
282 struct netxen_rcv_desc_ctx *rcv_desc = NULL;
283 struct netxen_cmd_buffer *cmd_buf_arr = NULL;
284 u64 mac_addr[FLASH_NUM_PORTS + 1];
287 int pci_func_id = PCI_FUNC(pdev->devfn);
289 printk(KERN_INFO "%s \n", netxen_nic_driver_string);
291 if (pdev->class != 0x020000) {
292 printk(KERN_ERR"NetXen function %d, class %x will not"
293 "be enabled.\n",pci_func_id, pdev->class);
296 if ((err = pci_enable_device(pdev)))
298 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
300 goto err_out_disable_pdev;
303 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
304 goto err_out_disable_pdev;
306 pci_set_master(pdev);
307 if (pdev->revision == NX_P2_C1 &&
308 (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) &&
309 (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) {
312 if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) ||
313 (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)))
314 goto err_out_free_res;
320 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
322 printk(KERN_ERR"%s: Failed to allocate memory for the "
323 "device block.Check system memory resource"
324 " usage.\n", netxen_nic_driver_name);
325 goto err_out_free_res;
328 SET_MODULE_OWNER(netdev);
329 SET_NETDEV_DEV(netdev, &pdev->dev);
331 adapter = netdev->priv;
332 memset(adapter, 0 , sizeof(struct netxen_adapter));
334 adapter->ahw.pdev = pdev;
335 adapter->ahw.pci_func = pci_func_id;
336 spin_lock_init(&adapter->tx_lock);
338 /* remap phys address */
339 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
340 mem_len = pci_resource_len(pdev, 0);
342 /* 128 Meg of memory */
343 if (mem_len == NETXEN_PCI_128MB_SIZE) {
344 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
345 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
346 SECOND_PAGE_GROUP_SIZE);
347 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
348 THIRD_PAGE_GROUP_SIZE);
349 first_page_group_start = FIRST_PAGE_GROUP_START;
350 first_page_group_end = FIRST_PAGE_GROUP_END;
351 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
352 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
353 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
354 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
355 first_page_group_start = 0;
356 first_page_group_end = 0;
359 goto err_out_free_netdev;
362 if (((mem_ptr0 == 0UL) && (mem_len == NETXEN_PCI_128MB_SIZE)) ||
363 (mem_ptr1 == 0UL) || (mem_ptr2 == 0UL)) {
365 "Cannot remap adapter memory aborting.:"
366 "0 -> %p, 1 -> %p, 2 -> %p\n",
367 mem_ptr0, mem_ptr1, mem_ptr2);
370 goto err_out_iounmap;
372 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
373 db_len = pci_resource_len(pdev, 4);
376 printk(KERN_ERR "%s: doorbell is disabled\n",
377 netxen_nic_driver_name);
379 goto err_out_iounmap;
381 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
384 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
386 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
387 netxen_nic_driver_name);
389 goto err_out_iounmap;
391 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
393 adapter->ahw.pci_base0 = mem_ptr0;
394 adapter->ahw.first_page_group_start = first_page_group_start;
395 adapter->ahw.first_page_group_end = first_page_group_end;
396 adapter->ahw.pci_base1 = mem_ptr1;
397 adapter->ahw.pci_base2 = mem_ptr2;
398 adapter->ahw.db_base = db_ptr;
399 adapter->ahw.db_len = db_len;
401 adapter->netdev = netdev;
402 adapter->pdev = pdev;
404 netif_napi_add(netdev, &adapter->napi,
405 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
407 /* this will be read from FW later */
408 adapter->intr_scheme = -1;
410 /* This will be reset for mezz cards */
411 adapter->portnum = pci_func_id;
412 adapter->status &= ~NETXEN_NETDEV_STATUS;
414 netdev->open = netxen_nic_open;
415 netdev->stop = netxen_nic_close;
416 netdev->hard_start_xmit = netxen_nic_xmit_frame;
417 netdev->get_stats = netxen_nic_get_stats;
418 netdev->set_multicast_list = netxen_nic_set_multi;
419 netdev->set_mac_address = netxen_nic_set_mac;
420 netdev->change_mtu = netxen_nic_change_mtu;
421 netdev->tx_timeout = netxen_tx_timeout;
422 netdev->watchdog_timeo = HZ;
424 netxen_nic_change_mtu(netdev, netdev->mtu);
426 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
427 #ifdef CONFIG_NET_POLL_CONTROLLER
428 netdev->poll_controller = netxen_nic_poll_controller;
430 /* ScatterGather support */
431 netdev->features = NETIF_F_SG;
432 netdev->features |= NETIF_F_IP_CSUM;
433 netdev->features |= NETIF_F_TSO;
436 netdev->features |= NETIF_F_HIGHDMA;
438 if (pci_enable_msi(pdev))
439 adapter->flags &= ~NETXEN_NIC_MSI_ENABLED;
441 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
443 netdev->irq = pdev->irq;
444 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
447 * Set the CRB window to invalid. If any register in window 0 is
448 * accessed it should set the window to 0 and then reset it to 1.
450 adapter->curr_window = 255;
452 /* initialize the adapter */
453 netxen_initialize_adapter_hw(adapter);
456 * Adapter in our case is quad port so initialize it before
457 * initializing the ports
460 netxen_initialize_adapter_ops(adapter);
462 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
463 if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) ||
464 (adapter->ahw.boardcfg.board_type ==
465 NETXEN_BRDTYPE_P2_SB31_2G))
466 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
468 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS;
469 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
470 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
472 cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
473 if (cmd_buf_arr == NULL) {
475 "%s: Could not allocate cmd_buf_arr memory:%d\n",
476 netxen_nic_driver_name, (int)TX_RINGSIZE);
478 goto err_out_free_adapter;
480 memset(cmd_buf_arr, 0, TX_RINGSIZE);
481 adapter->cmd_buf_arr = cmd_buf_arr;
483 for (i = 0; i < MAX_RCV_CTX; ++i) {
484 recv_ctx = &adapter->recv_ctx[i];
485 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
486 rcv_desc = &recv_ctx->rcv_desc[ring];
487 switch (RCV_DESC_TYPE(ring)) {
488 case RCV_DESC_NORMAL:
489 rcv_desc->max_rx_desc_count =
490 adapter->max_rx_desc_count;
491 rcv_desc->flags = RCV_DESC_NORMAL;
492 rcv_desc->dma_size = RX_DMA_MAP_LEN;
493 rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH;
497 rcv_desc->max_rx_desc_count =
498 adapter->max_jumbo_rx_desc_count;
499 rcv_desc->flags = RCV_DESC_JUMBO;
500 rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN;
501 rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH;
505 rcv_desc->max_rx_desc_count =
506 adapter->max_lro_rx_desc_count;
507 rcv_desc->flags = RCV_DESC_LRO;
508 rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN;
509 rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
513 rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *)
514 vmalloc(RCV_BUFFSIZE);
516 if (rcv_desc->rx_buf_arr == NULL) {
517 printk(KERN_ERR "%s: Could not allocate"
518 "rcv_desc->rx_buf_arr memory:%d\n",
519 netxen_nic_driver_name,
522 goto err_out_free_rx_buffer;
524 memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE);
529 netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */
531 /* Mezz cards have PCI function 0,2,3 enabled */
532 if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ)
533 && (pci_func_id >= 2))
534 adapter->portnum = pci_func_id - 2;
537 if(adapter->portnum == 0) {
538 netxen_pinit_from_rom(adapter, 0);
540 netxen_load_firmware(adapter);
544 init_timer(&adapter->watchdog_timer);
545 adapter->ahw.xg_linkup = 0;
546 adapter->watchdog_timer.function = &netxen_watchdog;
547 adapter->watchdog_timer.data = (unsigned long)adapter;
548 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
549 adapter->ahw.pdev = pdev;
550 adapter->proc_cmd_buf_counter = 0;
551 adapter->ahw.revision_id = pdev->revision;
553 /* make sure Window == 1 */
554 netxen_nic_pci_change_crbwindow(adapter, 1);
556 netxen_nic_update_cmd_producer(adapter, 0);
557 netxen_nic_update_cmd_consumer(adapter, 0);
558 writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO));
560 if (netxen_is_flash_supported(adapter) == 0 &&
561 netxen_get_flash_mac_addr(adapter, mac_addr) == 0)
567 unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum];
568 netdev->dev_addr[0] = *(p + 5);
569 netdev->dev_addr[1] = *(p + 4);
570 netdev->dev_addr[2] = *(p + 3);
571 netdev->dev_addr[3] = *(p + 2);
572 netdev->dev_addr[4] = *(p + 1);
573 netdev->dev_addr[5] = *(p + 0);
575 memcpy(netdev->perm_addr, netdev->dev_addr,
577 if (!is_valid_ether_addr(netdev->perm_addr)) {
578 printk(KERN_ERR "%s: Bad MAC address "
579 "%02x:%02x:%02x:%02x:%02x:%02x.\n",
580 netxen_nic_driver_name,
586 netdev->dev_addr[5]);
588 if (adapter->macaddr_set)
589 adapter->macaddr_set(adapter,
594 if (adapter->portnum == 0) {
595 err = netxen_initialize_adapter_offload(adapter);
597 goto err_out_free_rx_buffer;
598 val = readl(NETXEN_CRB_NORMALIZE(adapter,
599 NETXEN_CAM_RAM(0x1fc)));
600 if (val == 0x55555555) {
601 /* This is the first boot after power up */
602 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val);
605 netxen_nic_write_w0(adapter, NETXEN_PCIE_REG(0x4), val);
606 netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val);
608 printk(KERN_ERR "%s: failed to set MSI bit in PCI-e reg\n",
609 netxen_nic_driver_name);
611 val = readl(NETXEN_CRB_NORMALIZE(adapter,
612 NETXEN_ROMUSB_GLB_SW_RESET));
613 printk(KERN_INFO"NetXen: read 0x%08x for reset reg.\n",val);
614 if (val != 0x80000f) {
615 /* clear the register for future unloads/loads */
616 writel(0, NETXEN_CRB_NORMALIZE(adapter,
617 NETXEN_CAM_RAM(0x1fc)));
618 printk(KERN_ERR "ERROR in NetXen HW init sequence.\n");
620 goto err_out_free_dev;
624 /* clear the register for future unloads/loads */
625 writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
626 printk(KERN_INFO "State: 0x%0x\n",
627 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
630 * Tell the hardware our version number.
632 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
633 | ((_NETXEN_NIC_LINUX_MINOR << 8))
634 | (_NETXEN_NIC_LINUX_SUBVERSION);
635 writel(i, NETXEN_CRB_NORMALIZE(adapter, CRB_DRIVER_VERSION));
637 /* Unlock the HW, prompting the boot sequence */
639 NETXEN_CRB_NORMALIZE(adapter,
640 NETXEN_ROMUSB_GLB_PEGTUNE_DONE));
641 /* Handshake with the card before we register the devices. */
642 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
646 * See if the firmware gave us a virtual-physical port mapping.
648 i = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_V2P(adapter->portnum)));
650 physical_port[adapter->portnum] = i;
652 netif_carrier_off(netdev);
653 netif_stop_queue(netdev);
655 if ((err = register_netdev(netdev))) {
656 printk(KERN_ERR "%s: register_netdev failed port #%d"
657 " aborting\n", netxen_nic_driver_name,
660 goto err_out_free_dev;
663 pci_set_drvdata(pdev, adapter);
665 switch (adapter->ahw.board_type) {
667 printk(KERN_INFO "%s: QUAD GbE board initialized\n",
668 netxen_nic_driver_name);
671 case NETXEN_NIC_XGBE:
672 printk(KERN_INFO "%s: XGbE board initialized\n",
673 netxen_nic_driver_name);
677 adapter->driver_mismatch = 0;
682 if (adapter->portnum == 0)
683 netxen_free_adapter_offload(adapter);
685 err_out_free_rx_buffer:
686 for (i = 0; i < MAX_RCV_CTX; ++i) {
687 recv_ctx = &adapter->recv_ctx[i];
688 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
689 rcv_desc = &recv_ctx->rcv_desc[ring];
690 if (rcv_desc->rx_buf_arr != NULL) {
691 vfree(rcv_desc->rx_buf_arr);
692 rcv_desc->rx_buf_arr = NULL;
698 err_out_free_adapter:
699 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
700 pci_disable_msi(pdev);
702 pci_set_drvdata(pdev, NULL);
719 pci_release_regions(pdev);
721 err_out_disable_pdev:
722 pci_disable_device(pdev);
726 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
728 struct netxen_adapter *adapter;
729 struct net_device *netdev;
730 struct netxen_rx_buffer *buffer;
731 struct netxen_recv_context *recv_ctx;
732 struct netxen_rcv_desc_ctx *rcv_desc;
734 static int init_firmware_done = 0;
736 adapter = pci_get_drvdata(pdev);
740 netdev = adapter->netdev;
742 unregister_netdev(netdev);
744 if (adapter->stop_port)
745 adapter->stop_port(adapter);
747 netxen_nic_disable_int(adapter);
749 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
750 init_firmware_done++;
751 netxen_free_hw_resources(adapter);
754 for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) {
755 recv_ctx = &adapter->recv_ctx[ctxid];
756 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
757 rcv_desc = &recv_ctx->rcv_desc[ring];
758 for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) {
759 buffer = &(rcv_desc->rx_buf_arr[i]);
760 if (buffer->state == NETXEN_BUFFER_FREE)
762 pci_unmap_single(pdev, buffer->dma,
765 if (buffer->skb != NULL)
766 dev_kfree_skb_any(buffer->skb);
768 vfree(rcv_desc->rx_buf_arr);
772 vfree(adapter->cmd_buf_arr);
774 if (adapter->portnum == 0) {
775 if (init_firmware_done) {
778 if (dma_watchdog_shutdown_request(adapter) == 1)
781 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
786 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
789 /* clear the register for future unloads/loads */
790 writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
791 printk(KERN_INFO "State: 0x%0x\n",
792 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
794 /* leave the hw in the same state as reboot */
795 writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
796 netxen_pinit_from_rom(adapter, 0);
798 netxen_load_firmware(adapter);
799 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
802 /* clear the register for future unloads/loads */
803 writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
804 printk(KERN_INFO "State: 0x%0x\n",
805 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
809 if (dma_watchdog_shutdown_request(adapter) == 1)
812 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
817 netxen_free_adapter_offload(adapter);
819 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
825 free_irq(adapter->irq, adapter);
827 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
828 pci_disable_msi(pdev);
830 iounmap(adapter->ahw.db_base);
831 iounmap(adapter->ahw.pci_base0);
832 iounmap(adapter->ahw.pci_base1);
833 iounmap(adapter->ahw.pci_base2);
835 pci_release_regions(pdev);
836 pci_disable_device(pdev);
837 pci_set_drvdata(pdev, NULL);
843 * Called when a network interface is made active
844 * @returns 0 on success, negative value on failure
846 static int netxen_nic_open(struct net_device *netdev)
848 struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv;
852 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
853 err = netxen_init_firmware(adapter);
855 printk(KERN_ERR "Failed to init firmware\n");
858 netxen_nic_flash_print(adapter);
860 /* setup all the resources for the Phantom... */
861 /* this include the descriptors for rcv, tx, and status */
862 netxen_nic_clear_stats(adapter);
863 err = netxen_nic_hw_resources(adapter);
865 printk(KERN_ERR "Error in setting hw resources:%d\n",
869 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
870 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++)
871 netxen_post_rx_buffers(adapter, ctx, ring);
873 adapter->irq = adapter->ahw.pdev->irq;
874 err = request_irq(adapter->ahw.pdev->irq, netxen_intr,
875 IRQF_SHARED|IRQF_SAMPLE_RANDOM, netdev->name,
878 printk(KERN_ERR "request_irq failed with: %d\n", err);
879 netxen_free_hw_resources(adapter);
883 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
885 if (!adapter->driver_mismatch)
886 mod_timer(&adapter->watchdog_timer, jiffies);
888 napi_enable(&adapter->napi);
890 netxen_nic_enable_int(adapter);
892 /* Done here again so that even if phantom sw overwrote it,
894 if (adapter->init_port
895 && adapter->init_port(adapter, adapter->portnum) != 0) {
896 del_timer_sync(&adapter->watchdog_timer);
897 printk(KERN_ERR "%s: Failed to initialize port %d\n",
898 netxen_nic_driver_name, adapter->portnum);
899 napi_disable(&adapter->napi);
902 if (adapter->macaddr_set)
903 adapter->macaddr_set(adapter, netdev->dev_addr);
905 netxen_nic_set_link_parameters(adapter);
907 netxen_nic_set_multi(netdev);
908 if (adapter->set_mtu)
909 adapter->set_mtu(adapter, netdev->mtu);
911 if (!adapter->driver_mismatch)
912 netif_start_queue(netdev);
918 * netxen_nic_close - Disables a network interface entry point
920 static int netxen_nic_close(struct net_device *netdev)
922 struct netxen_adapter *adapter = netdev_priv(netdev);
924 struct netxen_cmd_buffer *cmd_buff;
925 struct netxen_skb_frag *buffrag;
927 netif_carrier_off(netdev);
928 netif_stop_queue(netdev);
929 napi_disable(&adapter->napi);
931 netxen_nic_disable_int(adapter);
933 cmd_buff = adapter->cmd_buf_arr;
934 for (i = 0; i < adapter->max_tx_desc_count; i++) {
935 buffrag = cmd_buff->frag_array;
937 pci_unmap_single(adapter->pdev, buffrag->dma,
938 buffrag->length, PCI_DMA_TODEVICE);
941 for (j = 0; j < cmd_buff->frag_count; j++) {
944 pci_unmap_page(adapter->pdev, buffrag->dma,
950 /* Free the skb we received in netxen_nic_xmit_frame */
952 dev_kfree_skb_any(cmd_buff->skb);
953 cmd_buff->skb = NULL;
957 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
958 FLUSH_SCHEDULED_WORK();
959 del_timer_sync(&adapter->watchdog_timer);
965 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
967 struct netxen_adapter *adapter = netdev_priv(netdev);
968 struct netxen_hardware_context *hw = &adapter->ahw;
969 unsigned int first_seg_len = skb->len - skb->data_len;
970 struct netxen_skb_frag *buffrag;
974 u32 saved_producer = 0;
975 struct cmd_desc_type0 *hwdesc;
977 struct netxen_cmd_buffer *pbuf = NULL;
978 static int dropped_packet = 0;
980 u32 local_producer = 0;
981 u32 max_tx_desc_count = 0;
982 u32 last_cmd_consumer = 0;
985 adapter->stats.xmitcalled++;
986 frag_count = skb_shinfo(skb)->nr_frags + 1;
988 if (unlikely(skb->len <= 0)) {
989 dev_kfree_skb_any(skb);
990 adapter->stats.badskblen++;
994 if (frag_count > MAX_BUFFERS_PER_CMD) {
995 printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)"
996 "too large, can handle only %d frags\n",
997 netxen_nic_driver_name, netdev->name,
998 frag_count, MAX_BUFFERS_PER_CMD);
999 adapter->stats.txdropped++;
1000 if ((++dropped_packet & 0xff) == 0xff)
1001 printk("%s: %s droppped packets = %d\n",
1002 netxen_nic_driver_name, netdev->name,
1005 return NETDEV_TX_OK;
1009 * Everything is set up. Now, we just need to transmit it out.
1010 * Note that we have to copy the contents of buffer over to
1011 * right place. Later on, this can be optimized out by de-coupling the
1012 * producer index from the buffer index.
1014 retry_getting_window:
1015 spin_lock_bh(&adapter->tx_lock);
1016 if (adapter->total_threads >= MAX_XMIT_PRODUCERS) {
1017 spin_unlock_bh(&adapter->tx_lock);
1024 for (i = 0; i < 20; i++)
1025 cpu_relax(); /*This a nop instr on i386 */
1027 goto retry_getting_window;
1029 local_producer = adapter->cmd_producer;
1030 /* There 4 fragments per descriptor */
1031 no_of_desc = (frag_count + 3) >> 2;
1032 if (netdev->features & NETIF_F_TSO) {
1033 if (skb_shinfo(skb)->gso_size > 0) {
1036 if ((ip_hdrlen(skb) + tcp_hdrlen(skb) +
1037 sizeof(struct ethhdr)) >
1038 (sizeof(struct cmd_desc_type0) - 2)) {
1043 k = adapter->cmd_producer;
1044 max_tx_desc_count = adapter->max_tx_desc_count;
1045 last_cmd_consumer = adapter->last_cmd_consumer;
1046 if ((k + no_of_desc) >=
1047 ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count :
1048 last_cmd_consumer)) {
1049 netif_stop_queue(netdev);
1050 adapter->flags |= NETXEN_NETDEV_STATUS;
1051 spin_unlock_bh(&adapter->tx_lock);
1052 return NETDEV_TX_BUSY;
1054 k = get_index_range(k, max_tx_desc_count, no_of_desc);
1055 adapter->cmd_producer = k;
1056 adapter->total_threads++;
1057 adapter->num_threads++;
1059 spin_unlock_bh(&adapter->tx_lock);
1060 /* Copy the descriptors into the hardware */
1061 producer = local_producer;
1062 saved_producer = producer;
1063 hwdesc = &hw->cmd_desc_head[producer];
1064 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1065 /* Take skb->data itself */
1066 pbuf = &adapter->cmd_buf_arr[producer];
1067 if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) {
1068 pbuf->mss = skb_shinfo(skb)->gso_size;
1069 hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1074 pbuf->total_length = skb->len;
1076 pbuf->cmd = TX_ETHER_PKT;
1077 pbuf->frag_count = frag_count;
1078 pbuf->port = adapter->portnum;
1079 buffrag = &pbuf->frag_array[0];
1080 buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
1082 buffrag->length = first_seg_len;
1083 netxen_set_cmd_desc_totallength(hwdesc, skb->len);
1084 netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count);
1085 netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT);
1087 netxen_set_cmd_desc_port(hwdesc, adapter->portnum);
1088 netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum);
1089 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1090 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1092 for (i = 1, k = 1; i < frag_count; i++, k++) {
1093 struct skb_frag_struct *frag;
1095 unsigned long offset;
1096 dma_addr_t temp_dma;
1098 /* move to next desc. if there is a need */
1099 if ((i & 0x3) == 0) {
1101 producer = get_next_index(producer,
1102 adapter->max_tx_desc_count);
1103 hwdesc = &hw->cmd_desc_head[producer];
1104 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1106 frag = &skb_shinfo(skb)->frags[i - 1];
1108 offset = frag->page_offset;
1111 temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
1112 len, PCI_DMA_TODEVICE);
1115 buffrag->dma = temp_dma;
1116 buffrag->length = temp_len;
1118 DPRINTK(INFO, "for loop. i=%d k=%d\n", i, k);
1121 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1122 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1125 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1126 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1129 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1130 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1133 hwdesc->buffer4_length = cpu_to_le16(temp_len);
1134 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1139 producer = get_next_index(producer, adapter->max_tx_desc_count);
1141 /* might change opcode to TX_TCP_LSO */
1142 netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb);
1144 /* For LSO, we need to copy the MAC/IP/TCP headers into
1145 * the descriptor ring
1147 if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer])
1149 int hdr_len, first_hdr_len, more_hdr;
1150 hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length;
1151 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1152 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1155 first_hdr_len = hdr_len;
1158 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1159 hwdesc = &hw->cmd_desc_head[producer];
1161 /* copy the first 64 bytes */
1162 memcpy(((void *)hwdesc) + 2,
1163 (void *)(skb->data), first_hdr_len);
1164 producer = get_next_index(producer, max_tx_desc_count);
1167 hwdesc = &hw->cmd_desc_head[producer];
1168 /* copy the next 64 bytes - should be enough except
1169 * for pathological case
1171 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1175 producer = get_next_index(producer, max_tx_desc_count);
1179 i = netxen_get_cmd_desc_totallength(&hw->cmd_desc_head[saved_producer]);
1181 hw->cmd_desc_head[saved_producer].flags_opcode =
1182 cpu_to_le16(hw->cmd_desc_head[saved_producer].flags_opcode);
1183 hw->cmd_desc_head[saved_producer].num_of_buffers_total_length =
1184 cpu_to_le32(hw->cmd_desc_head[saved_producer].
1185 num_of_buffers_total_length);
1187 spin_lock_bh(&adapter->tx_lock);
1188 adapter->stats.txbytes += i;
1190 /* Code to update the adapter considering how many producer threads
1191 are currently working */
1192 if ((--adapter->num_threads) == 0) {
1193 /* This is the last thread */
1194 u32 crb_producer = adapter->cmd_producer;
1195 netxen_nic_update_cmd_producer(adapter, crb_producer);
1197 adapter->total_threads = 0;
1200 adapter->stats.xmitfinished++;
1201 spin_unlock_bh(&adapter->tx_lock);
1203 netdev->trans_start = jiffies;
1205 DPRINTK(INFO, "wrote CMD producer %x to phantom\n", producer);
1207 DPRINTK(INFO, "Done. Send\n");
1208 return NETDEV_TX_OK;
1211 static void netxen_watchdog(unsigned long v)
1213 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1215 SCHEDULE_WORK(&adapter->watchdog_task);
1218 static void netxen_tx_timeout(struct net_device *netdev)
1220 struct netxen_adapter *adapter = (struct netxen_adapter *)
1221 netdev_priv(netdev);
1222 SCHEDULE_WORK(&adapter->tx_timeout_task);
1225 static void netxen_tx_timeout_task(struct work_struct *work)
1227 struct netxen_adapter *adapter =
1228 container_of(work, struct netxen_adapter, tx_timeout_task);
1230 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1231 netxen_nic_driver_name, adapter->netdev->name);
1233 netxen_nic_close(adapter->netdev);
1234 netxen_nic_open(adapter->netdev);
1235 adapter->netdev->trans_start = jiffies;
1236 netif_wake_queue(adapter->netdev);
1240 netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev)
1244 DPRINTK(INFO, "Entered handle ISR\n");
1245 adapter->stats.ints++;
1247 netxen_nic_disable_int(adapter);
1249 if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) {
1250 if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
1252 * Interrupts are already disabled.
1254 __netif_rx_schedule(netdev, &adapter->napi);
1256 static unsigned int intcount = 0;
1257 if ((++intcount & 0xfff) == 0xfff)
1259 "%s: %s interrupt %d while in poll\n",
1260 netxen_nic_driver_name, netdev->name,
1267 netxen_nic_enable_int(adapter);
1274 * netxen_intr - Interrupt Handler
1275 * @irq: interrupt number
1276 * data points to adapter stucture (which may be handling more than 1 port
1278 irqreturn_t netxen_intr(int irq, void *data)
1280 struct netxen_adapter *adapter;
1281 struct net_device *netdev;
1284 if (unlikely(!irq)) {
1285 return IRQ_NONE; /* Not our interrupt */
1288 adapter = (struct netxen_adapter *)data;
1289 netdev = adapter->netdev;
1291 if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
1292 our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
1293 /* not our interrupt */
1294 if ((our_int & (0x80 << adapter->portnum)) == 0)
1298 if (adapter->intr_scheme == INTR_SCHEME_PERPORT) {
1299 /* claim interrupt */
1300 if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
1301 writel(our_int & ~((u32)(0x80 << adapter->portnum)),
1302 NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
1306 if (netif_running(netdev))
1307 netxen_handle_int(adapter, netdev);
1312 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1314 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
1315 struct net_device *netdev = adapter->netdev;
1320 DPRINTK(INFO, "polling for %d descriptors\n", *budget);
1323 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1325 * Fairness issue. This will give undue weight to the
1326 * receive context 0.
1330 * To avoid starvation, we give each of our receivers,
1331 * a fraction of the quota. Sometimes, it might happen that we
1332 * have enough quota to process every packet, but since all the
1333 * packets are on one context, it gets only half of the quota,
1334 * and ends up not processing it.
1336 work_done += netxen_process_rcv_ring(adapter, ctx,
1337 budget / MAX_RCV_CTX);
1340 if (work_done >= budget && netxen_nic_rx_has_work(adapter) != 0)
1343 if (netxen_process_cmd_ring((unsigned long)adapter) == 0)
1346 DPRINTK(INFO, "new work_done: %d work_to_do: %d\n",
1347 work_done, work_to_do);
1349 netif_rx_complete(netdev, napi);
1350 netxen_nic_enable_int(adapter);
1356 #ifdef CONFIG_NET_POLL_CONTROLLER
1357 static void netxen_nic_poll_controller(struct net_device *netdev)
1359 struct netxen_adapter *adapter = netdev_priv(netdev);
1360 disable_irq(adapter->irq);
1361 netxen_intr(adapter->irq, adapter);
1362 enable_irq(adapter->irq);
1366 static struct pci_driver netxen_driver = {
1367 .name = netxen_nic_driver_name,
1368 .id_table = netxen_pci_tbl,
1369 .probe = netxen_nic_probe,
1370 .remove = __devexit_p(netxen_nic_remove)
1373 /* Driver Registration on NetXen card */
1375 static int __init netxen_init_module(void)
1377 if ((netxen_workq = create_singlethread_workqueue("netxen")) == 0)
1380 return pci_register_driver(&netxen_driver);
1383 module_init(netxen_init_module);
1385 static void __exit netxen_exit_module(void)
1388 * Wait for some time to allow the dma to drain, if any.
1391 pci_unregister_driver(&netxen_driver);
1392 destroy_workqueue(netxen_workq);
1395 module_exit(netxen_exit_module);