2 * Copyright (C) 2003 - 2006 NetXen, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
23 * Contact Information:
26 * 3965 Freedom Circle, Fourth floor,
27 * Santa Clara, CA 95054
30 * Main source file for NetXen NIC Driver on Linux
34 #include <linux/vmalloc.h>
35 #include <linux/highmem.h>
36 #include "netxen_nic_hw.h"
38 #include "netxen_nic.h"
39 #include "netxen_nic_phan_reg.h"
41 #include <linux/dma-mapping.h>
42 #include <linux/vmalloc.h>
45 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
46 MODULE_LICENSE("GPL");
47 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID
);
49 char netxen_nic_driver_name
[] = "netxen_nic";
50 static char netxen_nic_driver_string
[] = "NetXen Network Driver version "
51 NETXEN_NIC_LINUX_VERSIONID
;
53 #define NETXEN_NETDEV_WEIGHT 120
54 #define NETXEN_ADAPTER_UP_MAGIC 777
55 #define NETXEN_NIC_PEG_TUNE 0
57 #define DMA_32BIT_MASK 0x00000000ffffffffULL
58 #define DMA_35BIT_MASK 0x00000007ffffffffULL
60 /* Local functions to NetXen NIC driver */
61 static int __devinit
netxen_nic_probe(struct pci_dev
*pdev
,
62 const struct pci_device_id
*ent
);
63 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
);
64 static int netxen_nic_open(struct net_device
*netdev
);
65 static int netxen_nic_close(struct net_device
*netdev
);
66 static int netxen_nic_xmit_frame(struct sk_buff
*, struct net_device
*);
67 static void netxen_tx_timeout(struct net_device
*netdev
);
68 static void netxen_tx_timeout_task(struct work_struct
*work
);
69 static void netxen_watchdog(unsigned long);
70 static int netxen_handle_int(struct netxen_adapter
*, struct net_device
*);
71 static int netxen_nic_poll(struct net_device
*dev
, int *budget
);
72 #ifdef CONFIG_NET_POLL_CONTROLLER
73 static void netxen_nic_poll_controller(struct net_device
*netdev
);
75 static irqreturn_t
netxen_intr(int irq
, void *data
);
77 int physical_port
[] = {0, 1, 2, 3};
79 /* PCI Device ID Table */
80 static struct pci_device_id netxen_pci_tbl
[] __devinitdata
= {
81 {PCI_DEVICE(0x4040, 0x0001)},
82 {PCI_DEVICE(0x4040, 0x0002)},
83 {PCI_DEVICE(0x4040, 0x0003)},
84 {PCI_DEVICE(0x4040, 0x0004)},
85 {PCI_DEVICE(0x4040, 0x0005)},
86 {PCI_DEVICE(0x4040, 0x0024)},
87 {PCI_DEVICE(0x4040, 0x0025)},
91 MODULE_DEVICE_TABLE(pci
, netxen_pci_tbl
);
93 struct workqueue_struct
*netxen_workq
;
94 static void netxen_watchdog(unsigned long);
96 static inline void netxen_nic_update_cmd_producer(struct netxen_adapter
*adapter
,
97 uint32_t crb_producer
)
99 switch (adapter
->portnum
) {
101 writel(crb_producer
, NETXEN_CRB_NORMALIZE
102 (adapter
, CRB_CMD_PRODUCER_OFFSET
));
105 writel(crb_producer
, NETXEN_CRB_NORMALIZE
106 (adapter
, CRB_CMD_PRODUCER_OFFSET_1
));
109 writel(crb_producer
, NETXEN_CRB_NORMALIZE
110 (adapter
, CRB_CMD_PRODUCER_OFFSET_2
));
113 writel(crb_producer
, NETXEN_CRB_NORMALIZE
114 (adapter
, CRB_CMD_PRODUCER_OFFSET_3
));
117 printk(KERN_WARNING
"We tried to update "
118 "CRB_CMD_PRODUCER_OFFSET for invalid "
119 "PCI function id %d\n",
125 static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter
*adapter
,
128 switch (adapter
->portnum
) {
130 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
131 (adapter
, CRB_CMD_CONSUMER_OFFSET
));
134 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
135 (adapter
, CRB_CMD_CONSUMER_OFFSET_1
));
138 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
139 (adapter
, CRB_CMD_CONSUMER_OFFSET_2
));
142 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
143 (adapter
, CRB_CMD_CONSUMER_OFFSET_3
));
146 printk(KERN_WARNING
"We tried to update "
147 "CRB_CMD_PRODUCER_OFFSET for invalid "
148 "PCI function id %d\n",
154 #define ADAPTER_LIST_SIZE 12
155 int netxen_cards_found
;
157 static void netxen_nic_disable_int(struct netxen_adapter
*adapter
)
159 uint32_t mask
= 0x7ff;
162 DPRINTK(1, INFO
, "Entered ISR Disable \n");
164 switch (adapter
->portnum
) {
166 writel(0x0, NETXEN_CRB_NORMALIZE(adapter
, CRB_SW_INT_MASK_0
));
169 writel(0x0, NETXEN_CRB_NORMALIZE(adapter
, CRB_SW_INT_MASK_1
));
172 writel(0x0, NETXEN_CRB_NORMALIZE(adapter
, CRB_SW_INT_MASK_2
));
175 writel(0x0, NETXEN_CRB_NORMALIZE(adapter
, CRB_SW_INT_MASK_3
));
179 if (adapter
->intr_scheme
!= -1 &&
180 adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
)
181 writel(mask
,PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_MASK
));
183 /* Window = 0 or 1 */
184 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
187 PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_TARGET_STATUS
));
188 mask
= readl(pci_base_offset(adapter
, ISR_INT_VECTOR
));
195 printk(KERN_NOTICE
"%s: Failed to disable interrupt completely\n",
196 netxen_nic_driver_name
);
200 DPRINTK(1, INFO
, "Done with Disable Int\n");
203 static void netxen_nic_enable_int(struct netxen_adapter
*adapter
)
207 DPRINTK(1, INFO
, "Entered ISR Enable \n");
209 if (adapter
->intr_scheme
!= -1 &&
210 adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
) {
211 switch (adapter
->ahw
.board_type
) {
215 case NETXEN_NIC_XGBE
:
223 writel(mask
, PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_MASK
));
226 switch (adapter
->portnum
) {
228 writel(0x1, NETXEN_CRB_NORMALIZE(adapter
, CRB_SW_INT_MASK_0
));
231 writel(0x1, NETXEN_CRB_NORMALIZE(adapter
, CRB_SW_INT_MASK_1
));
234 writel(0x1, NETXEN_CRB_NORMALIZE(adapter
, CRB_SW_INT_MASK_2
));
237 writel(0x1, NETXEN_CRB_NORMALIZE(adapter
, CRB_SW_INT_MASK_3
));
241 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
243 if (adapter
->intr_scheme
!= -1 &&
244 adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
) {
245 writel(0X0, NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
248 PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_TARGET_MASK
));
251 DPRINTK(1, INFO
, "Done with enable Int\n");
257 * The Linux system will invoke this after identifying the vendor ID and
258 * device Id in the pci_tbl supported by this module.
260 * A quad port card has one operational PCI config space, (function 0),
261 * which is used to access all four ports.
263 * This routine will initialize the adapter, and setup the global parameters
264 * along with the port's specific structure.
267 netxen_nic_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
269 struct net_device
*netdev
= NULL
;
270 struct netxen_adapter
*adapter
= NULL
;
271 void __iomem
*mem_ptr0
= NULL
;
272 void __iomem
*mem_ptr1
= NULL
;
273 void __iomem
*mem_ptr2
= NULL
;
274 unsigned long first_page_group_end
;
275 unsigned long first_page_group_start
;
278 u8 __iomem
*db_ptr
= NULL
;
279 unsigned long mem_base
, mem_len
, db_base
, db_len
;
280 int pci_using_dac
, i
= 0, err
;
282 struct netxen_recv_context
*recv_ctx
= NULL
;
283 struct netxen_rcv_desc_ctx
*rcv_desc
= NULL
;
284 struct netxen_cmd_buffer
*cmd_buf_arr
= NULL
;
285 u64 mac_addr
[FLASH_NUM_PORTS
+ 1];
288 int pci_func_id
= PCI_FUNC(pdev
->devfn
);
290 printk(KERN_INFO
"%s \n", netxen_nic_driver_string
);
292 if (pdev
->class != 0x020000) {
293 printk(KERN_ERR
"NetXen function %d, class %x will not"
294 "be enabled.\n",pci_func_id
, pdev
->class);
297 if ((err
= pci_enable_device(pdev
)))
299 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
301 goto err_out_disable_pdev
;
304 if ((err
= pci_request_regions(pdev
, netxen_nic_driver_name
)))
305 goto err_out_disable_pdev
;
307 pci_set_master(pdev
);
308 if (pdev
->revision
== NX_P2_C1
&&
309 (pci_set_dma_mask(pdev
, DMA_35BIT_MASK
) == 0) &&
310 (pci_set_consistent_dma_mask(pdev
, DMA_35BIT_MASK
) == 0)) {
313 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) ||
314 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
)))
315 goto err_out_free_res
;
321 netdev
= alloc_etherdev(sizeof(struct netxen_adapter
));
323 printk(KERN_ERR
"%s: Failed to allocate memory for the "
324 "device block.Check system memory resource"
325 " usage.\n", netxen_nic_driver_name
);
326 goto err_out_free_res
;
329 SET_MODULE_OWNER(netdev
);
330 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
332 adapter
= netdev
->priv
;
333 memset(adapter
, 0 , sizeof(struct netxen_adapter
));
335 adapter
->ahw
.pdev
= pdev
;
336 adapter
->ahw
.pci_func
= pci_func_id
;
337 spin_lock_init(&adapter
->tx_lock
);
339 /* remap phys address */
340 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
341 mem_len
= pci_resource_len(pdev
, 0);
343 /* 128 Meg of memory */
344 if (mem_len
== NETXEN_PCI_128MB_SIZE
) {
345 mem_ptr0
= ioremap(mem_base
, FIRST_PAGE_GROUP_SIZE
);
346 mem_ptr1
= ioremap(mem_base
+ SECOND_PAGE_GROUP_START
,
347 SECOND_PAGE_GROUP_SIZE
);
348 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
,
349 THIRD_PAGE_GROUP_SIZE
);
350 first_page_group_start
= FIRST_PAGE_GROUP_START
;
351 first_page_group_end
= FIRST_PAGE_GROUP_END
;
352 } else if (mem_len
== NETXEN_PCI_32MB_SIZE
) {
353 mem_ptr1
= ioremap(mem_base
, SECOND_PAGE_GROUP_SIZE
);
354 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
-
355 SECOND_PAGE_GROUP_START
, THIRD_PAGE_GROUP_SIZE
);
356 first_page_group_start
= 0;
357 first_page_group_end
= 0;
360 goto err_out_free_netdev
;
363 if (((mem_ptr0
== 0UL) && (mem_len
== NETXEN_PCI_128MB_SIZE
)) ||
364 (mem_ptr1
== 0UL) || (mem_ptr2
== 0UL)) {
366 "Cannot remap adapter memory aborting.:"
367 "0 -> %p, 1 -> %p, 2 -> %p\n",
368 mem_ptr0
, mem_ptr1
, mem_ptr2
);
371 goto err_out_iounmap
;
373 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
374 db_len
= pci_resource_len(pdev
, 4);
377 printk(KERN_ERR
"%s: doorbell is disabled\n",
378 netxen_nic_driver_name
);
380 goto err_out_iounmap
;
382 DPRINTK(INFO
, "doorbell ioremap from %lx a size of %lx\n", db_base
,
385 db_ptr
= ioremap(db_base
, NETXEN_DB_MAPSIZE_BYTES
);
387 printk(KERN_ERR
"%s: Failed to allocate doorbell map.",
388 netxen_nic_driver_name
);
390 goto err_out_iounmap
;
392 DPRINTK(INFO
, "doorbell ioremaped at %p\n", db_ptr
);
394 adapter
->ahw
.pci_base0
= mem_ptr0
;
395 adapter
->ahw
.first_page_group_start
= first_page_group_start
;
396 adapter
->ahw
.first_page_group_end
= first_page_group_end
;
397 adapter
->ahw
.pci_base1
= mem_ptr1
;
398 adapter
->ahw
.pci_base2
= mem_ptr2
;
399 adapter
->ahw
.db_base
= db_ptr
;
400 adapter
->ahw
.db_len
= db_len
;
402 adapter
->netdev
= netdev
;
403 adapter
->pdev
= pdev
;
405 /* this will be read from FW later */
406 adapter
->intr_scheme
= -1;
408 /* This will be reset for mezz cards */
409 adapter
->portnum
= pci_func_id
;
410 adapter
->status
&= ~NETXEN_NETDEV_STATUS
;
412 netdev
->open
= netxen_nic_open
;
413 netdev
->stop
= netxen_nic_close
;
414 netdev
->hard_start_xmit
= netxen_nic_xmit_frame
;
415 netdev
->get_stats
= netxen_nic_get_stats
;
416 netdev
->set_multicast_list
= netxen_nic_set_multi
;
417 netdev
->set_mac_address
= netxen_nic_set_mac
;
418 netdev
->change_mtu
= netxen_nic_change_mtu
;
419 netdev
->tx_timeout
= netxen_tx_timeout
;
420 netdev
->watchdog_timeo
= HZ
;
422 netxen_nic_change_mtu(netdev
, netdev
->mtu
);
424 SET_ETHTOOL_OPS(netdev
, &netxen_nic_ethtool_ops
);
425 netdev
->poll
= netxen_nic_poll
;
426 netdev
->weight
= NETXEN_NETDEV_WEIGHT
;
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 netxen_nic_enable_int(adapter
);
890 /* Done here again so that even if phantom sw overwrote it,
892 if (adapter
->init_port
893 && adapter
->init_port(adapter
, adapter
->portnum
) != 0) {
894 del_timer_sync(&adapter
->watchdog_timer
);
895 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
896 netxen_nic_driver_name
, adapter
->portnum
);
899 if (adapter
->macaddr_set
)
900 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
902 netxen_nic_set_link_parameters(adapter
);
904 netxen_nic_set_multi(netdev
);
905 if (adapter
->set_mtu
)
906 adapter
->set_mtu(adapter
, netdev
->mtu
);
908 if (!adapter
->driver_mismatch
)
909 netif_start_queue(netdev
);
915 * netxen_nic_close - Disables a network interface entry point
917 static int netxen_nic_close(struct net_device
*netdev
)
919 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
921 struct netxen_cmd_buffer
*cmd_buff
;
922 struct netxen_skb_frag
*buffrag
;
924 netif_carrier_off(netdev
);
925 netif_stop_queue(netdev
);
927 netxen_nic_disable_int(adapter
);
929 cmd_buff
= adapter
->cmd_buf_arr
;
930 for (i
= 0; i
< adapter
->max_tx_desc_count
; i
++) {
931 buffrag
= cmd_buff
->frag_array
;
933 pci_unmap_single(adapter
->pdev
, buffrag
->dma
,
934 buffrag
->length
, PCI_DMA_TODEVICE
);
937 for (j
= 0; j
< cmd_buff
->frag_count
; j
++) {
940 pci_unmap_page(adapter
->pdev
, buffrag
->dma
,
946 /* Free the skb we received in netxen_nic_xmit_frame */
948 dev_kfree_skb_any(cmd_buff
->skb
);
949 cmd_buff
->skb
= NULL
;
953 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
954 FLUSH_SCHEDULED_WORK();
955 del_timer_sync(&adapter
->watchdog_timer
);
961 static int netxen_nic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
963 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
964 struct netxen_hardware_context
*hw
= &adapter
->ahw
;
965 unsigned int first_seg_len
= skb
->len
- skb
->data_len
;
966 struct netxen_skb_frag
*buffrag
;
970 u32 saved_producer
= 0;
971 struct cmd_desc_type0
*hwdesc
;
973 struct netxen_cmd_buffer
*pbuf
= NULL
;
974 static int dropped_packet
= 0;
976 u32 local_producer
= 0;
977 u32 max_tx_desc_count
= 0;
978 u32 last_cmd_consumer
= 0;
981 adapter
->stats
.xmitcalled
++;
982 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
984 if (unlikely(skb
->len
<= 0)) {
985 dev_kfree_skb_any(skb
);
986 adapter
->stats
.badskblen
++;
990 if (frag_count
> MAX_BUFFERS_PER_CMD
) {
991 printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)"
992 "too large, can handle only %d frags\n",
993 netxen_nic_driver_name
, netdev
->name
,
994 frag_count
, MAX_BUFFERS_PER_CMD
);
995 adapter
->stats
.txdropped
++;
996 if ((++dropped_packet
& 0xff) == 0xff)
997 printk("%s: %s droppped packets = %d\n",
998 netxen_nic_driver_name
, netdev
->name
,
1001 return NETDEV_TX_OK
;
1005 * Everything is set up. Now, we just need to transmit it out.
1006 * Note that we have to copy the contents of buffer over to
1007 * right place. Later on, this can be optimized out by de-coupling the
1008 * producer index from the buffer index.
1010 retry_getting_window
:
1011 spin_lock_bh(&adapter
->tx_lock
);
1012 if (adapter
->total_threads
>= MAX_XMIT_PRODUCERS
) {
1013 spin_unlock_bh(&adapter
->tx_lock
);
1020 for (i
= 0; i
< 20; i
++)
1021 cpu_relax(); /*This a nop instr on i386 */
1023 goto retry_getting_window
;
1025 local_producer
= adapter
->cmd_producer
;
1026 /* There 4 fragments per descriptor */
1027 no_of_desc
= (frag_count
+ 3) >> 2;
1028 if (netdev
->features
& NETIF_F_TSO
) {
1029 if (skb_shinfo(skb
)->gso_size
> 0) {
1032 if ((ip_hdrlen(skb
) + tcp_hdrlen(skb
) +
1033 sizeof(struct ethhdr
)) >
1034 (sizeof(struct cmd_desc_type0
) - 2)) {
1039 k
= adapter
->cmd_producer
;
1040 max_tx_desc_count
= adapter
->max_tx_desc_count
;
1041 last_cmd_consumer
= adapter
->last_cmd_consumer
;
1042 if ((k
+ no_of_desc
) >=
1043 ((last_cmd_consumer
<= k
) ? last_cmd_consumer
+ max_tx_desc_count
:
1044 last_cmd_consumer
)) {
1045 netif_stop_queue(netdev
);
1046 adapter
->flags
|= NETXEN_NETDEV_STATUS
;
1047 spin_unlock_bh(&adapter
->tx_lock
);
1048 return NETDEV_TX_BUSY
;
1050 k
= get_index_range(k
, max_tx_desc_count
, no_of_desc
);
1051 adapter
->cmd_producer
= k
;
1052 adapter
->total_threads
++;
1053 adapter
->num_threads
++;
1055 spin_unlock_bh(&adapter
->tx_lock
);
1056 /* Copy the descriptors into the hardware */
1057 producer
= local_producer
;
1058 saved_producer
= producer
;
1059 hwdesc
= &hw
->cmd_desc_head
[producer
];
1060 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1061 /* Take skb->data itself */
1062 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1063 if ((netdev
->features
& NETIF_F_TSO
) && skb_shinfo(skb
)->gso_size
> 0) {
1064 pbuf
->mss
= skb_shinfo(skb
)->gso_size
;
1065 hwdesc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
1070 pbuf
->total_length
= skb
->len
;
1072 pbuf
->cmd
= TX_ETHER_PKT
;
1073 pbuf
->frag_count
= frag_count
;
1074 pbuf
->port
= adapter
->portnum
;
1075 buffrag
= &pbuf
->frag_array
[0];
1076 buffrag
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, first_seg_len
,
1078 buffrag
->length
= first_seg_len
;
1079 netxen_set_cmd_desc_totallength(hwdesc
, skb
->len
);
1080 netxen_set_cmd_desc_num_of_buff(hwdesc
, frag_count
);
1081 netxen_set_cmd_desc_opcode(hwdesc
, TX_ETHER_PKT
);
1083 netxen_set_cmd_desc_port(hwdesc
, adapter
->portnum
);
1084 netxen_set_cmd_desc_ctxid(hwdesc
, adapter
->portnum
);
1085 hwdesc
->buffer1_length
= cpu_to_le16(first_seg_len
);
1086 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
1088 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
1089 struct skb_frag_struct
*frag
;
1091 unsigned long offset
;
1092 dma_addr_t temp_dma
;
1094 /* move to next desc. if there is a need */
1095 if ((i
& 0x3) == 0) {
1097 producer
= get_next_index(producer
,
1098 adapter
->max_tx_desc_count
);
1099 hwdesc
= &hw
->cmd_desc_head
[producer
];
1100 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1102 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1104 offset
= frag
->page_offset
;
1107 temp_dma
= pci_map_page(adapter
->pdev
, frag
->page
, offset
,
1108 len
, PCI_DMA_TODEVICE
);
1111 buffrag
->dma
= temp_dma
;
1112 buffrag
->length
= temp_len
;
1114 DPRINTK(INFO
, "for loop. i=%d k=%d\n", i
, k
);
1117 hwdesc
->buffer1_length
= cpu_to_le16(temp_len
);
1118 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1121 hwdesc
->buffer2_length
= cpu_to_le16(temp_len
);
1122 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1125 hwdesc
->buffer3_length
= cpu_to_le16(temp_len
);
1126 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1129 hwdesc
->buffer4_length
= cpu_to_le16(temp_len
);
1130 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1135 producer
= get_next_index(producer
, adapter
->max_tx_desc_count
);
1137 /* might change opcode to TX_TCP_LSO */
1138 netxen_tso_check(adapter
, &hw
->cmd_desc_head
[saved_producer
], skb
);
1140 /* For LSO, we need to copy the MAC/IP/TCP headers into
1141 * the descriptor ring
1143 if (netxen_get_cmd_desc_opcode(&hw
->cmd_desc_head
[saved_producer
])
1145 int hdr_len
, first_hdr_len
, more_hdr
;
1146 hdr_len
= hw
->cmd_desc_head
[saved_producer
].total_hdr_length
;
1147 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1148 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1151 first_hdr_len
= hdr_len
;
1154 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1155 hwdesc
= &hw
->cmd_desc_head
[producer
];
1157 /* copy the first 64 bytes */
1158 memcpy(((void *)hwdesc
) + 2,
1159 (void *)(skb
->data
), first_hdr_len
);
1160 producer
= get_next_index(producer
, max_tx_desc_count
);
1163 hwdesc
= &hw
->cmd_desc_head
[producer
];
1164 /* copy the next 64 bytes - should be enough except
1165 * for pathological case
1167 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1171 producer
= get_next_index(producer
, max_tx_desc_count
);
1175 i
= netxen_get_cmd_desc_totallength(&hw
->cmd_desc_head
[saved_producer
]);
1177 hw
->cmd_desc_head
[saved_producer
].flags_opcode
=
1178 cpu_to_le16(hw
->cmd_desc_head
[saved_producer
].flags_opcode
);
1179 hw
->cmd_desc_head
[saved_producer
].num_of_buffers_total_length
=
1180 cpu_to_le32(hw
->cmd_desc_head
[saved_producer
].
1181 num_of_buffers_total_length
);
1183 spin_lock_bh(&adapter
->tx_lock
);
1184 adapter
->stats
.txbytes
+= i
;
1186 /* Code to update the adapter considering how many producer threads
1187 are currently working */
1188 if ((--adapter
->num_threads
) == 0) {
1189 /* This is the last thread */
1190 u32 crb_producer
= adapter
->cmd_producer
;
1191 netxen_nic_update_cmd_producer(adapter
, crb_producer
);
1193 adapter
->total_threads
= 0;
1196 adapter
->stats
.xmitfinished
++;
1197 spin_unlock_bh(&adapter
->tx_lock
);
1199 netdev
->trans_start
= jiffies
;
1201 DPRINTK(INFO
, "wrote CMD producer %x to phantom\n", producer
);
1203 DPRINTK(INFO
, "Done. Send\n");
1204 return NETDEV_TX_OK
;
1207 static void netxen_watchdog(unsigned long v
)
1209 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1211 SCHEDULE_WORK(&adapter
->watchdog_task
);
1214 static void netxen_tx_timeout(struct net_device
*netdev
)
1216 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1217 netdev_priv(netdev
);
1218 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1221 static void netxen_tx_timeout_task(struct work_struct
*work
)
1223 struct netxen_adapter
*adapter
=
1224 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1226 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1227 netxen_nic_driver_name
, adapter
->netdev
->name
);
1229 netxen_nic_close(adapter
->netdev
);
1230 netxen_nic_open(adapter
->netdev
);
1231 adapter
->netdev
->trans_start
= jiffies
;
1232 netif_wake_queue(adapter
->netdev
);
1236 netxen_handle_int(struct netxen_adapter
*adapter
, struct net_device
*netdev
)
1240 DPRINTK(INFO
, "Entered handle ISR\n");
1241 adapter
->stats
.ints
++;
1243 netxen_nic_disable_int(adapter
);
1245 if (netxen_nic_rx_has_work(adapter
) || netxen_nic_tx_has_work(adapter
)) {
1246 if (netif_rx_schedule_prep(netdev
)) {
1248 * Interrupts are already disabled.
1250 __netif_rx_schedule(netdev
);
1252 static unsigned int intcount
= 0;
1253 if ((++intcount
& 0xfff) == 0xfff)
1255 "%s: %s interrupt %d while in poll\n",
1256 netxen_nic_driver_name
, netdev
->name
,
1263 netxen_nic_enable_int(adapter
);
1270 * netxen_intr - Interrupt Handler
1271 * @irq: interrupt number
1272 * data points to adapter stucture (which may be handling more than 1 port
1274 irqreturn_t
netxen_intr(int irq
, void *data
)
1276 struct netxen_adapter
*adapter
;
1277 struct net_device
*netdev
;
1280 if (unlikely(!irq
)) {
1281 return IRQ_NONE
; /* Not our interrupt */
1284 adapter
= (struct netxen_adapter
*)data
;
1285 netdev
= adapter
->netdev
;
1287 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
1288 our_int
= readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1289 /* not our interrupt */
1290 if ((our_int
& (0x80 << adapter
->portnum
)) == 0)
1294 if (adapter
->intr_scheme
== INTR_SCHEME_PERPORT
) {
1295 /* claim interrupt */
1296 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
1297 writel(our_int
& ~((u32
)(0x80 << adapter
->portnum
)),
1298 NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1302 if (netif_running(netdev
))
1303 netxen_handle_int(adapter
, netdev
);
1308 static int netxen_nic_poll(struct net_device
*netdev
, int *budget
)
1310 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1311 int work_to_do
= min(*budget
, netdev
->quota
);
1317 DPRINTK(INFO
, "polling for %d descriptors\n", *budget
);
1320 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1322 * Fairness issue. This will give undue weight to the
1323 * receive context 0.
1327 * To avoid starvation, we give each of our receivers,
1328 * a fraction of the quota. Sometimes, it might happen that we
1329 * have enough quota to process every packet, but since all the
1330 * packets are on one context, it gets only half of the quota,
1331 * and ends up not processing it.
1333 this_work_done
= netxen_process_rcv_ring(adapter
, ctx
,
1336 work_done
+= this_work_done
;
1339 netdev
->quota
-= work_done
;
1340 *budget
-= work_done
;
1342 if (work_done
>= work_to_do
&& netxen_nic_rx_has_work(adapter
) != 0)
1345 if (netxen_process_cmd_ring((unsigned long)adapter
) == 0)
1348 DPRINTK(INFO
, "new work_done: %d work_to_do: %d\n",
1349 work_done
, work_to_do
);
1351 netif_rx_complete(netdev
);
1352 netxen_nic_enable_int(adapter
);
1358 #ifdef CONFIG_NET_POLL_CONTROLLER
1359 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1361 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1362 disable_irq(adapter
->irq
);
1363 netxen_intr(adapter
->irq
, adapter
);
1364 enable_irq(adapter
->irq
);
1368 static struct pci_driver netxen_driver
= {
1369 .name
= netxen_nic_driver_name
,
1370 .id_table
= netxen_pci_tbl
,
1371 .probe
= netxen_nic_probe
,
1372 .remove
= __devexit_p(netxen_nic_remove
)
1375 /* Driver Registration on NetXen card */
1377 static int __init
netxen_init_module(void)
1379 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == 0)
1382 return pci_register_driver(&netxen_driver
);
1385 module_init(netxen_init_module
);
1387 static void __exit
netxen_exit_module(void)
1390 * Wait for some time to allow the dma to drain, if any.
1393 pci_unregister_driver(&netxen_driver
);
1394 destroy_workqueue(netxen_workq
);
1397 module_exit(netxen_exit_module
);