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 writel(0, NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
));
643 netxen_pinit_from_rom(adapter
, 0);
645 netxen_load_firmware(adapter
);
646 netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
650 * See if the firmware gave us a virtual-physical port mapping.
652 i
= readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_V2P(adapter
->portnum
)));
654 physical_port
[adapter
->portnum
] = i
;
656 netif_carrier_off(netdev
);
657 netif_stop_queue(netdev
);
659 if ((err
= register_netdev(netdev
))) {
660 printk(KERN_ERR
"%s: register_netdev failed port #%d"
661 " aborting\n", netxen_nic_driver_name
,
664 goto err_out_free_dev
;
667 pci_set_drvdata(pdev
, adapter
);
669 switch (adapter
->ahw
.board_type
) {
671 printk(KERN_INFO
"%s: QUAD GbE board initialized\n",
672 netxen_nic_driver_name
);
675 case NETXEN_NIC_XGBE
:
676 printk(KERN_INFO
"%s: XGbE board initialized\n",
677 netxen_nic_driver_name
);
681 adapter
->driver_mismatch
= 0;
686 if (adapter
->portnum
== 0)
687 netxen_free_adapter_offload(adapter
);
689 err_out_free_rx_buffer
:
690 for (i
= 0; i
< MAX_RCV_CTX
; ++i
) {
691 recv_ctx
= &adapter
->recv_ctx
[i
];
692 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
693 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
694 if (rcv_desc
->rx_buf_arr
!= NULL
) {
695 vfree(rcv_desc
->rx_buf_arr
);
696 rcv_desc
->rx_buf_arr
= NULL
;
702 err_out_free_adapter
:
703 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
704 pci_disable_msi(pdev
);
706 pci_set_drvdata(pdev
, NULL
);
723 pci_release_regions(pdev
);
725 err_out_disable_pdev
:
726 pci_disable_device(pdev
);
730 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
)
732 struct netxen_adapter
*adapter
;
733 struct net_device
*netdev
;
734 struct netxen_rx_buffer
*buffer
;
735 struct netxen_recv_context
*recv_ctx
;
736 struct netxen_rcv_desc_ctx
*rcv_desc
;
738 static int init_firmware_done
= 0;
740 adapter
= pci_get_drvdata(pdev
);
744 netdev
= adapter
->netdev
;
746 unregister_netdev(netdev
);
748 if (adapter
->stop_port
)
749 adapter
->stop_port(adapter
);
751 netxen_nic_disable_int(adapter
);
754 free_irq(adapter
->irq
, adapter
);
756 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
757 init_firmware_done
++;
758 netxen_free_hw_resources(adapter
);
761 for (ctxid
= 0; ctxid
< MAX_RCV_CTX
; ++ctxid
) {
762 recv_ctx
= &adapter
->recv_ctx
[ctxid
];
763 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
764 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
765 for (i
= 0; i
< rcv_desc
->max_rx_desc_count
; ++i
) {
766 buffer
= &(rcv_desc
->rx_buf_arr
[i
]);
767 if (buffer
->state
== NETXEN_BUFFER_FREE
)
769 pci_unmap_single(pdev
, buffer
->dma
,
772 if (buffer
->skb
!= NULL
)
773 dev_kfree_skb_any(buffer
->skb
);
775 vfree(rcv_desc
->rx_buf_arr
);
779 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
780 pci_disable_msi(pdev
);
782 vfree(adapter
->cmd_buf_arr
);
784 pci_disable_device(pdev
);
786 if (adapter
->portnum
== 0) {
787 if (init_firmware_done
) {
790 if (dma_watchdog_shutdown_request(adapter
) == 1)
793 if (dma_watchdog_shutdown_poll_result(adapter
) == 1)
798 printk(KERN_ERR
"%s: dma_watchdog_shutdown failed\n",
801 /* clear the register for future unloads/loads */
802 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
803 printk(KERN_INFO
"State: 0x%0x\n",
804 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
806 /* leave the hw in the same state as reboot */
807 writel(0, NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
));
808 netxen_pinit_from_rom(adapter
, 0);
810 netxen_load_firmware(adapter
);
811 netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
814 /* clear the register for future unloads/loads */
815 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
816 printk(KERN_INFO
"State: 0x%0x\n",
817 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
821 if (dma_watchdog_shutdown_request(adapter
) == 1)
824 if (dma_watchdog_shutdown_poll_result(adapter
) == 1)
829 netxen_free_adapter_offload(adapter
);
831 printk(KERN_ERR
"%s: dma_watchdog_shutdown failed\n",
836 iounmap(adapter
->ahw
.db_base
);
837 iounmap(adapter
->ahw
.pci_base0
);
838 iounmap(adapter
->ahw
.pci_base1
);
839 iounmap(adapter
->ahw
.pci_base2
);
841 pci_release_regions(pdev
);
842 pci_set_drvdata(pdev
, NULL
);
848 * Called when a network interface is made active
849 * @returns 0 on success, negative value on failure
851 static int netxen_nic_open(struct net_device
*netdev
)
853 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)netdev
->priv
;
857 if (adapter
->is_up
!= NETXEN_ADAPTER_UP_MAGIC
) {
858 err
= netxen_init_firmware(adapter
);
860 printk(KERN_ERR
"Failed to init firmware\n");
863 netxen_nic_flash_print(adapter
);
865 /* setup all the resources for the Phantom... */
866 /* this include the descriptors for rcv, tx, and status */
867 netxen_nic_clear_stats(adapter
);
868 err
= netxen_nic_hw_resources(adapter
);
870 printk(KERN_ERR
"Error in setting hw resources:%d\n",
874 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
875 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++)
876 netxen_post_rx_buffers(adapter
, ctx
, ring
);
878 adapter
->irq
= adapter
->ahw
.pdev
->irq
;
879 err
= request_irq(adapter
->ahw
.pdev
->irq
, netxen_intr
,
880 IRQF_SHARED
|IRQF_SAMPLE_RANDOM
, netdev
->name
,
883 printk(KERN_ERR
"request_irq failed with: %d\n", err
);
884 netxen_free_hw_resources(adapter
);
888 adapter
->is_up
= NETXEN_ADAPTER_UP_MAGIC
;
890 if (!adapter
->driver_mismatch
)
891 mod_timer(&adapter
->watchdog_timer
, jiffies
);
893 netxen_nic_enable_int(adapter
);
895 /* Done here again so that even if phantom sw overwrote it,
897 if (adapter
->init_port
898 && adapter
->init_port(adapter
, adapter
->portnum
) != 0) {
899 del_timer_sync(&adapter
->watchdog_timer
);
900 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
901 netxen_nic_driver_name
, adapter
->portnum
);
904 if (adapter
->macaddr_set
)
905 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
907 netxen_nic_set_link_parameters(adapter
);
909 netxen_nic_set_multi(netdev
);
910 if (adapter
->set_mtu
)
911 adapter
->set_mtu(adapter
, netdev
->mtu
);
913 if (!adapter
->driver_mismatch
)
914 netif_start_queue(netdev
);
920 * netxen_nic_close - Disables a network interface entry point
922 static int netxen_nic_close(struct net_device
*netdev
)
924 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
926 struct netxen_cmd_buffer
*cmd_buff
;
927 struct netxen_skb_frag
*buffrag
;
929 netif_carrier_off(netdev
);
930 netif_stop_queue(netdev
);
932 netxen_nic_disable_int(adapter
);
934 cmd_buff
= adapter
->cmd_buf_arr
;
935 for (i
= 0; i
< adapter
->max_tx_desc_count
; i
++) {
936 buffrag
= cmd_buff
->frag_array
;
938 pci_unmap_single(adapter
->pdev
, buffrag
->dma
,
939 buffrag
->length
, PCI_DMA_TODEVICE
);
942 for (j
= 0; j
< cmd_buff
->frag_count
; j
++) {
945 pci_unmap_page(adapter
->pdev
, buffrag
->dma
,
951 /* Free the skb we received in netxen_nic_xmit_frame */
953 dev_kfree_skb_any(cmd_buff
->skb
);
954 cmd_buff
->skb
= NULL
;
958 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
959 FLUSH_SCHEDULED_WORK();
960 del_timer_sync(&adapter
->watchdog_timer
);
966 static int netxen_nic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
968 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
969 struct netxen_hardware_context
*hw
= &adapter
->ahw
;
970 unsigned int first_seg_len
= skb
->len
- skb
->data_len
;
971 struct netxen_skb_frag
*buffrag
;
975 u32 saved_producer
= 0;
976 struct cmd_desc_type0
*hwdesc
;
978 struct netxen_cmd_buffer
*pbuf
= NULL
;
979 static int dropped_packet
= 0;
981 u32 local_producer
= 0;
982 u32 max_tx_desc_count
= 0;
983 u32 last_cmd_consumer
= 0;
986 adapter
->stats
.xmitcalled
++;
987 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
989 if (unlikely(skb
->len
<= 0)) {
990 dev_kfree_skb_any(skb
);
991 adapter
->stats
.badskblen
++;
995 if (frag_count
> MAX_BUFFERS_PER_CMD
) {
996 printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)"
997 "too large, can handle only %d frags\n",
998 netxen_nic_driver_name
, netdev
->name
,
999 frag_count
, MAX_BUFFERS_PER_CMD
);
1000 adapter
->stats
.txdropped
++;
1001 if ((++dropped_packet
& 0xff) == 0xff)
1002 printk("%s: %s droppped packets = %d\n",
1003 netxen_nic_driver_name
, netdev
->name
,
1006 return NETDEV_TX_OK
;
1010 * Everything is set up. Now, we just need to transmit it out.
1011 * Note that we have to copy the contents of buffer over to
1012 * right place. Later on, this can be optimized out by de-coupling the
1013 * producer index from the buffer index.
1015 retry_getting_window
:
1016 spin_lock_bh(&adapter
->tx_lock
);
1017 if (adapter
->total_threads
>= MAX_XMIT_PRODUCERS
) {
1018 spin_unlock_bh(&adapter
->tx_lock
);
1025 for (i
= 0; i
< 20; i
++)
1026 cpu_relax(); /*This a nop instr on i386 */
1028 goto retry_getting_window
;
1030 local_producer
= adapter
->cmd_producer
;
1031 /* There 4 fragments per descriptor */
1032 no_of_desc
= (frag_count
+ 3) >> 2;
1033 if (netdev
->features
& NETIF_F_TSO
) {
1034 if (skb_shinfo(skb
)->gso_size
> 0) {
1037 if ((ip_hdrlen(skb
) + tcp_hdrlen(skb
) +
1038 sizeof(struct ethhdr
)) >
1039 (sizeof(struct cmd_desc_type0
) - 2)) {
1044 k
= adapter
->cmd_producer
;
1045 max_tx_desc_count
= adapter
->max_tx_desc_count
;
1046 last_cmd_consumer
= adapter
->last_cmd_consumer
;
1047 if ((k
+ no_of_desc
) >=
1048 ((last_cmd_consumer
<= k
) ? last_cmd_consumer
+ max_tx_desc_count
:
1049 last_cmd_consumer
)) {
1050 netif_stop_queue(netdev
);
1051 adapter
->flags
|= NETXEN_NETDEV_STATUS
;
1052 spin_unlock_bh(&adapter
->tx_lock
);
1053 return NETDEV_TX_BUSY
;
1055 k
= get_index_range(k
, max_tx_desc_count
, no_of_desc
);
1056 adapter
->cmd_producer
= k
;
1057 adapter
->total_threads
++;
1058 adapter
->num_threads
++;
1060 spin_unlock_bh(&adapter
->tx_lock
);
1061 /* Copy the descriptors into the hardware */
1062 producer
= local_producer
;
1063 saved_producer
= producer
;
1064 hwdesc
= &hw
->cmd_desc_head
[producer
];
1065 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1066 /* Take skb->data itself */
1067 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1068 if ((netdev
->features
& NETIF_F_TSO
) && skb_shinfo(skb
)->gso_size
> 0) {
1069 pbuf
->mss
= skb_shinfo(skb
)->gso_size
;
1070 hwdesc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
1075 pbuf
->total_length
= skb
->len
;
1077 pbuf
->cmd
= TX_ETHER_PKT
;
1078 pbuf
->frag_count
= frag_count
;
1079 pbuf
->port
= adapter
->portnum
;
1080 buffrag
= &pbuf
->frag_array
[0];
1081 buffrag
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, first_seg_len
,
1083 buffrag
->length
= first_seg_len
;
1084 netxen_set_cmd_desc_totallength(hwdesc
, skb
->len
);
1085 netxen_set_cmd_desc_num_of_buff(hwdesc
, frag_count
);
1086 netxen_set_cmd_desc_opcode(hwdesc
, TX_ETHER_PKT
);
1088 netxen_set_cmd_desc_port(hwdesc
, adapter
->portnum
);
1089 netxen_set_cmd_desc_ctxid(hwdesc
, adapter
->portnum
);
1090 hwdesc
->buffer1_length
= cpu_to_le16(first_seg_len
);
1091 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
1093 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
1094 struct skb_frag_struct
*frag
;
1096 unsigned long offset
;
1097 dma_addr_t temp_dma
;
1099 /* move to next desc. if there is a need */
1100 if ((i
& 0x3) == 0) {
1102 producer
= get_next_index(producer
,
1103 adapter
->max_tx_desc_count
);
1104 hwdesc
= &hw
->cmd_desc_head
[producer
];
1105 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1107 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1109 offset
= frag
->page_offset
;
1112 temp_dma
= pci_map_page(adapter
->pdev
, frag
->page
, offset
,
1113 len
, PCI_DMA_TODEVICE
);
1116 buffrag
->dma
= temp_dma
;
1117 buffrag
->length
= temp_len
;
1119 DPRINTK(INFO
, "for loop. i=%d k=%d\n", i
, k
);
1122 hwdesc
->buffer1_length
= cpu_to_le16(temp_len
);
1123 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1126 hwdesc
->buffer2_length
= cpu_to_le16(temp_len
);
1127 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1130 hwdesc
->buffer3_length
= cpu_to_le16(temp_len
);
1131 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1134 hwdesc
->buffer4_length
= cpu_to_le16(temp_len
);
1135 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1140 producer
= get_next_index(producer
, adapter
->max_tx_desc_count
);
1142 /* might change opcode to TX_TCP_LSO */
1143 netxen_tso_check(adapter
, &hw
->cmd_desc_head
[saved_producer
], skb
);
1145 /* For LSO, we need to copy the MAC/IP/TCP headers into
1146 * the descriptor ring
1148 if (netxen_get_cmd_desc_opcode(&hw
->cmd_desc_head
[saved_producer
])
1150 int hdr_len
, first_hdr_len
, more_hdr
;
1151 hdr_len
= hw
->cmd_desc_head
[saved_producer
].total_hdr_length
;
1152 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1153 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1156 first_hdr_len
= hdr_len
;
1159 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1160 hwdesc
= &hw
->cmd_desc_head
[producer
];
1162 /* copy the first 64 bytes */
1163 memcpy(((void *)hwdesc
) + 2,
1164 (void *)(skb
->data
), first_hdr_len
);
1165 producer
= get_next_index(producer
, max_tx_desc_count
);
1168 hwdesc
= &hw
->cmd_desc_head
[producer
];
1169 /* copy the next 64 bytes - should be enough except
1170 * for pathological case
1172 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1176 producer
= get_next_index(producer
, max_tx_desc_count
);
1180 i
= netxen_get_cmd_desc_totallength(&hw
->cmd_desc_head
[saved_producer
]);
1182 hw
->cmd_desc_head
[saved_producer
].flags_opcode
=
1183 cpu_to_le16(hw
->cmd_desc_head
[saved_producer
].flags_opcode
);
1184 hw
->cmd_desc_head
[saved_producer
].num_of_buffers_total_length
=
1185 cpu_to_le32(hw
->cmd_desc_head
[saved_producer
].
1186 num_of_buffers_total_length
);
1188 spin_lock_bh(&adapter
->tx_lock
);
1189 adapter
->stats
.txbytes
+= i
;
1191 /* Code to update the adapter considering how many producer threads
1192 are currently working */
1193 if ((--adapter
->num_threads
) == 0) {
1194 /* This is the last thread */
1195 u32 crb_producer
= adapter
->cmd_producer
;
1196 netxen_nic_update_cmd_producer(adapter
, crb_producer
);
1198 adapter
->total_threads
= 0;
1201 adapter
->stats
.xmitfinished
++;
1202 spin_unlock_bh(&adapter
->tx_lock
);
1204 netdev
->trans_start
= jiffies
;
1206 DPRINTK(INFO
, "wrote CMD producer %x to phantom\n", producer
);
1208 DPRINTK(INFO
, "Done. Send\n");
1209 return NETDEV_TX_OK
;
1212 static void netxen_watchdog(unsigned long v
)
1214 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1216 SCHEDULE_WORK(&adapter
->watchdog_task
);
1219 static void netxen_tx_timeout(struct net_device
*netdev
)
1221 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1222 netdev_priv(netdev
);
1223 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1226 static void netxen_tx_timeout_task(struct work_struct
*work
)
1228 struct netxen_adapter
*adapter
=
1229 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1231 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1232 netxen_nic_driver_name
, adapter
->netdev
->name
);
1234 netxen_nic_close(adapter
->netdev
);
1235 netxen_nic_open(adapter
->netdev
);
1236 adapter
->netdev
->trans_start
= jiffies
;
1237 netif_wake_queue(adapter
->netdev
);
1241 netxen_handle_int(struct netxen_adapter
*adapter
, struct net_device
*netdev
)
1245 DPRINTK(INFO
, "Entered handle ISR\n");
1246 adapter
->stats
.ints
++;
1248 netxen_nic_disable_int(adapter
);
1250 if (netxen_nic_rx_has_work(adapter
) || netxen_nic_tx_has_work(adapter
)) {
1251 if (netif_rx_schedule_prep(netdev
)) {
1253 * Interrupts are already disabled.
1255 __netif_rx_schedule(netdev
);
1257 static unsigned int intcount
= 0;
1258 if ((++intcount
& 0xfff) == 0xfff)
1260 "%s: %s interrupt %d while in poll\n",
1261 netxen_nic_driver_name
, netdev
->name
,
1268 netxen_nic_enable_int(adapter
);
1275 * netxen_intr - Interrupt Handler
1276 * @irq: interrupt number
1277 * data points to adapter stucture (which may be handling more than 1 port
1279 irqreturn_t
netxen_intr(int irq
, void *data
)
1281 struct netxen_adapter
*adapter
;
1282 struct net_device
*netdev
;
1285 if (unlikely(!irq
)) {
1286 return IRQ_NONE
; /* Not our interrupt */
1289 adapter
= (struct netxen_adapter
*)data
;
1290 netdev
= adapter
->netdev
;
1292 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
1293 our_int
= readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1294 /* not our interrupt */
1295 if ((our_int
& (0x80 << adapter
->portnum
)) == 0)
1299 if (adapter
->intr_scheme
== INTR_SCHEME_PERPORT
) {
1300 /* claim interrupt */
1301 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
1302 writel(our_int
& ~((u32
)(0x80 << adapter
->portnum
)),
1303 NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1307 if (netif_running(netdev
))
1308 netxen_handle_int(adapter
, netdev
);
1313 static int netxen_nic_poll(struct net_device
*netdev
, int *budget
)
1315 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1316 int work_to_do
= min(*budget
, netdev
->quota
);
1322 DPRINTK(INFO
, "polling for %d descriptors\n", *budget
);
1325 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1327 * Fairness issue. This will give undue weight to the
1328 * receive context 0.
1332 * To avoid starvation, we give each of our receivers,
1333 * a fraction of the quota. Sometimes, it might happen that we
1334 * have enough quota to process every packet, but since all the
1335 * packets are on one context, it gets only half of the quota,
1336 * and ends up not processing it.
1338 this_work_done
= netxen_process_rcv_ring(adapter
, ctx
,
1341 work_done
+= this_work_done
;
1344 netdev
->quota
-= work_done
;
1345 *budget
-= work_done
;
1347 if (work_done
>= work_to_do
&& netxen_nic_rx_has_work(adapter
) != 0)
1350 if (netxen_process_cmd_ring((unsigned long)adapter
) == 0)
1353 DPRINTK(INFO
, "new work_done: %d work_to_do: %d\n",
1354 work_done
, work_to_do
);
1356 netif_rx_complete(netdev
);
1357 netxen_nic_enable_int(adapter
);
1363 #ifdef CONFIG_NET_POLL_CONTROLLER
1364 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1366 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1367 disable_irq(adapter
->irq
);
1368 netxen_intr(adapter
->irq
, adapter
);
1369 enable_irq(adapter
->irq
);
1373 static struct pci_driver netxen_driver
= {
1374 .name
= netxen_nic_driver_name
,
1375 .id_table
= netxen_pci_tbl
,
1376 .probe
= netxen_nic_probe
,
1377 .remove
= __devexit_p(netxen_nic_remove
)
1380 /* Driver Registration on NetXen card */
1382 static int __init
netxen_init_module(void)
1384 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == 0)
1387 return pci_register_driver(&netxen_driver
);
1390 module_init(netxen_init_module
);
1392 static void __exit
netxen_exit_module(void)
1395 * Wait for some time to allow the dma to drain, if any.
1398 pci_unregister_driver(&netxen_driver
);
1399 destroy_workqueue(netxen_workq
);
1402 module_exit(netxen_exit_module
);