2 * Copyright (C) 2003 - 2006 NetXen, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
23 * Contact Information:
26 * 3965 Freedom Circle, Fourth floor,
27 * Santa Clara, CA 95054
30 * Main source file for NetXen NIC Driver on Linux
34 #include <linux/vmalloc.h>
35 #include <linux/highmem.h>
36 #include "netxen_nic_hw.h"
38 #include "netxen_nic.h"
39 #include "netxen_nic_phan_reg.h"
41 #include <linux/dma-mapping.h>
44 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID
);
48 char netxen_nic_driver_name
[] = "netxen_nic";
49 static char netxen_nic_driver_string
[] = "NetXen Network Driver version "
50 NETXEN_NIC_LINUX_VERSIONID
;
52 #define NETXEN_NETDEV_WEIGHT 120
53 #define NETXEN_ADAPTER_UP_MAGIC 777
54 #define NETXEN_NIC_PEG_TUNE 0
56 /* Local functions to NetXen NIC driver */
57 static int __devinit
netxen_nic_probe(struct pci_dev
*pdev
,
58 const struct pci_device_id
*ent
);
59 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
);
60 static int netxen_nic_open(struct net_device
*netdev
);
61 static int netxen_nic_close(struct net_device
*netdev
);
62 static int netxen_nic_xmit_frame(struct sk_buff
*, struct net_device
*);
63 static void netxen_tx_timeout(struct net_device
*netdev
);
64 static void netxen_tx_timeout_task(struct work_struct
*work
);
65 static void netxen_watchdog(unsigned long);
66 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
);
67 #ifdef CONFIG_NET_POLL_CONTROLLER
68 static void netxen_nic_poll_controller(struct net_device
*netdev
);
70 static irqreturn_t
netxen_intr(int irq
, void *data
);
71 static irqreturn_t
netxen_msi_intr(int irq
, void *data
);
73 /* PCI Device ID Table */
74 static struct pci_device_id netxen_pci_tbl
[] __devinitdata
= {
75 {PCI_DEVICE(0x4040, 0x0001)},
76 {PCI_DEVICE(0x4040, 0x0002)},
77 {PCI_DEVICE(0x4040, 0x0003)},
78 {PCI_DEVICE(0x4040, 0x0004)},
79 {PCI_DEVICE(0x4040, 0x0005)},
80 {PCI_DEVICE(0x4040, 0x0024)},
81 {PCI_DEVICE(0x4040, 0x0025)},
85 MODULE_DEVICE_TABLE(pci
, netxen_pci_tbl
);
88 * In netxen_nic_down(), we must wait for any pending callback requests into
89 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
90 * reenabled right after it is deleted in netxen_nic_down().
91 * FLUSH_SCHEDULED_WORK() does this synchronization.
93 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
94 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
95 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
96 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
97 * linkwatch_event() to be executed which also attempts to acquire the rtnl
98 * lock thus causing a deadlock.
101 static struct workqueue_struct
*netxen_workq
;
102 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
103 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
105 static void netxen_watchdog(unsigned long);
107 static void netxen_nic_update_cmd_producer(struct netxen_adapter
*adapter
,
108 uint32_t crb_producer
)
110 switch (adapter
->portnum
) {
112 writel(crb_producer
, NETXEN_CRB_NORMALIZE
113 (adapter
, CRB_CMD_PRODUCER_OFFSET
));
116 writel(crb_producer
, NETXEN_CRB_NORMALIZE
117 (adapter
, CRB_CMD_PRODUCER_OFFSET_1
));
120 writel(crb_producer
, NETXEN_CRB_NORMALIZE
121 (adapter
, CRB_CMD_PRODUCER_OFFSET_2
));
124 writel(crb_producer
, NETXEN_CRB_NORMALIZE
125 (adapter
, CRB_CMD_PRODUCER_OFFSET_3
));
128 printk(KERN_WARNING
"We tried to update "
129 "CRB_CMD_PRODUCER_OFFSET for invalid "
130 "PCI function id %d\n",
136 static void netxen_nic_update_cmd_consumer(struct netxen_adapter
*adapter
,
139 switch (adapter
->portnum
) {
141 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
142 (adapter
, CRB_CMD_CONSUMER_OFFSET
));
145 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
146 (adapter
, CRB_CMD_CONSUMER_OFFSET_1
));
149 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
150 (adapter
, CRB_CMD_CONSUMER_OFFSET_2
));
153 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
154 (adapter
, CRB_CMD_CONSUMER_OFFSET_3
));
157 printk(KERN_WARNING
"We tried to update "
158 "CRB_CMD_PRODUCER_OFFSET for invalid "
159 "PCI function id %d\n",
165 #define ADAPTER_LIST_SIZE 12
167 static uint32_t msi_tgt_status
[4] = {
168 ISR_INT_TARGET_STATUS
, ISR_INT_TARGET_STATUS_F1
,
169 ISR_INT_TARGET_STATUS_F2
, ISR_INT_TARGET_STATUS_F3
172 static uint32_t sw_int_mask
[4] = {
173 CRB_SW_INT_MASK_0
, CRB_SW_INT_MASK_1
,
174 CRB_SW_INT_MASK_2
, CRB_SW_INT_MASK_3
177 static void netxen_nic_disable_int(struct netxen_adapter
*adapter
)
181 int port
= adapter
->portnum
;
182 int pci_fn
= adapter
->ahw
.pci_func
;
184 if (adapter
->msi_mode
!= MSI_MODE_MULTIFUNC
)
185 writel(0x0, NETXEN_CRB_NORMALIZE(adapter
, sw_int_mask
[port
]));
187 if (adapter
->intr_scheme
!= -1 &&
188 adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
)
189 writel(mask
,PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_MASK
));
191 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
194 PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_TARGET_STATUS
));
195 mask
= readl(pci_base_offset(adapter
, ISR_INT_VECTOR
));
202 printk(KERN_NOTICE
"%s: Failed to disable interrupt completely\n",
203 netxen_nic_driver_name
);
206 if (adapter
->msi_mode
== MSI_MODE_MULTIFUNC
) {
207 writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter
,
208 msi_tgt_status
[pci_fn
]));
213 static void netxen_nic_enable_int(struct netxen_adapter
*adapter
)
216 int port
= adapter
->portnum
;
218 DPRINTK(1, INFO
, "Entered ISR Enable \n");
220 if (adapter
->intr_scheme
!= -1 &&
221 adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
) {
222 switch (adapter
->ahw
.board_type
) {
226 case NETXEN_NIC_XGBE
:
234 writel(mask
, PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_MASK
));
237 writel(0x1, NETXEN_CRB_NORMALIZE(adapter
, sw_int_mask
[port
]));
239 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
241 if (adapter
->intr_scheme
!= -1 &&
242 adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
) {
243 writel(0X0, NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
246 PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_TARGET_MASK
));
249 DPRINTK(1, INFO
, "Done with enable Int\n");
255 * The Linux system will invoke this after identifying the vendor ID and
256 * device Id in the pci_tbl supported by this module.
258 * A quad port card has one operational PCI config space, (function 0),
259 * which is used to access all four ports.
261 * This routine will initialize the adapter, and setup the global parameters
262 * along with the port's specific structure.
265 netxen_nic_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
267 struct net_device
*netdev
= NULL
;
268 struct netxen_adapter
*adapter
= NULL
;
269 void __iomem
*mem_ptr0
= NULL
;
270 void __iomem
*mem_ptr1
= NULL
;
271 void __iomem
*mem_ptr2
= NULL
;
272 unsigned long first_page_group_end
;
273 unsigned long first_page_group_start
;
276 u8 __iomem
*db_ptr
= NULL
;
277 unsigned long mem_base
, mem_len
, db_base
, db_len
;
278 int pci_using_dac
, i
= 0, err
;
280 struct netxen_recv_context
*recv_ctx
= NULL
;
281 struct netxen_rcv_desc_ctx
*rcv_desc
= NULL
;
282 struct netxen_cmd_buffer
*cmd_buf_arr
= NULL
;
283 __le64 mac_addr
[FLASH_NUM_PORTS
+ 1];
286 int pci_func_id
= PCI_FUNC(pdev
->devfn
);
287 DECLARE_MAC_BUF(mac
);
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_NETDEV_DEV(netdev
, &pdev
->dev
);
330 adapter
= netdev
->priv
;
332 adapter
->ahw
.pdev
= pdev
;
333 adapter
->ahw
.pci_func
= pci_func_id
;
335 /* remap phys address */
336 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
337 mem_len
= pci_resource_len(pdev
, 0);
339 /* 128 Meg of memory */
340 if (mem_len
== NETXEN_PCI_128MB_SIZE
) {
341 mem_ptr0
= ioremap(mem_base
, FIRST_PAGE_GROUP_SIZE
);
342 mem_ptr1
= ioremap(mem_base
+ SECOND_PAGE_GROUP_START
,
343 SECOND_PAGE_GROUP_SIZE
);
344 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
,
345 THIRD_PAGE_GROUP_SIZE
);
346 first_page_group_start
= FIRST_PAGE_GROUP_START
;
347 first_page_group_end
= FIRST_PAGE_GROUP_END
;
348 } else if (mem_len
== NETXEN_PCI_32MB_SIZE
) {
349 mem_ptr1
= ioremap(mem_base
, SECOND_PAGE_GROUP_SIZE
);
350 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
-
351 SECOND_PAGE_GROUP_START
, THIRD_PAGE_GROUP_SIZE
);
352 first_page_group_start
= 0;
353 first_page_group_end
= 0;
356 goto err_out_free_netdev
;
359 if ((!mem_ptr0
&& mem_len
== NETXEN_PCI_128MB_SIZE
) ||
360 !mem_ptr1
|| !mem_ptr2
) {
362 "Cannot remap adapter memory aborting.:"
363 "0 -> %p, 1 -> %p, 2 -> %p\n",
364 mem_ptr0
, mem_ptr1
, mem_ptr2
);
367 goto err_out_iounmap
;
369 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
370 db_len
= pci_resource_len(pdev
, 4);
373 printk(KERN_ERR
"%s: doorbell is disabled\n",
374 netxen_nic_driver_name
);
376 goto err_out_iounmap
;
378 DPRINTK(INFO
, "doorbell ioremap from %lx a size of %lx\n", db_base
,
381 db_ptr
= ioremap(db_base
, NETXEN_DB_MAPSIZE_BYTES
);
383 printk(KERN_ERR
"%s: Failed to allocate doorbell map.",
384 netxen_nic_driver_name
);
386 goto err_out_iounmap
;
388 DPRINTK(INFO
, "doorbell ioremaped at %p\n", db_ptr
);
390 adapter
->ahw
.pci_base0
= mem_ptr0
;
391 adapter
->ahw
.first_page_group_start
= first_page_group_start
;
392 adapter
->ahw
.first_page_group_end
= first_page_group_end
;
393 adapter
->ahw
.pci_base1
= mem_ptr1
;
394 adapter
->ahw
.pci_base2
= mem_ptr2
;
395 adapter
->ahw
.db_base
= db_ptr
;
396 adapter
->ahw
.db_len
= db_len
;
398 adapter
->netdev
= netdev
;
399 adapter
->pdev
= pdev
;
401 netif_napi_add(netdev
, &adapter
->napi
,
402 netxen_nic_poll
, NETXEN_NETDEV_WEIGHT
);
404 /* this will be read from FW later */
405 adapter
->intr_scheme
= -1;
406 adapter
->msi_mode
= -1;
408 /* This will be reset for mezz cards */
409 adapter
->portnum
= pci_func_id
;
410 adapter
->status
&= ~NETXEN_NETDEV_STATUS
;
411 adapter
->rx_csum
= 1;
413 netdev
->open
= netxen_nic_open
;
414 netdev
->stop
= netxen_nic_close
;
415 netdev
->hard_start_xmit
= netxen_nic_xmit_frame
;
416 netdev
->get_stats
= netxen_nic_get_stats
;
417 netdev
->set_multicast_list
= netxen_nic_set_multi
;
418 netdev
->set_mac_address
= netxen_nic_set_mac
;
419 netdev
->change_mtu
= netxen_nic_change_mtu
;
420 netdev
->tx_timeout
= netxen_tx_timeout
;
421 netdev
->watchdog_timeo
= 2*HZ
;
423 netxen_nic_change_mtu(netdev
, netdev
->mtu
);
425 SET_ETHTOOL_OPS(netdev
, &netxen_nic_ethtool_ops
);
426 #ifdef CONFIG_NET_POLL_CONTROLLER
427 netdev
->poll_controller
= netxen_nic_poll_controller
;
429 /* ScatterGather support */
430 netdev
->features
= NETIF_F_SG
;
431 netdev
->features
|= NETIF_F_IP_CSUM
;
432 netdev
->features
|= NETIF_F_TSO
;
435 netdev
->features
|= NETIF_F_HIGHDMA
;
437 if (pci_enable_msi(pdev
))
438 adapter
->flags
&= ~NETXEN_NIC_MSI_ENABLED
;
440 adapter
->flags
|= NETXEN_NIC_MSI_ENABLED
;
442 netdev
->irq
= pdev
->irq
;
443 INIT_WORK(&adapter
->tx_timeout_task
, netxen_tx_timeout_task
);
446 * Set the CRB window to invalid. If any register in window 0 is
447 * accessed it should set the window to 0 and then reset it to 1.
449 adapter
->curr_window
= 255;
451 /* initialize the adapter */
452 netxen_initialize_adapter_hw(adapter
);
455 * Adapter in our case is quad port so initialize it before
456 * initializing the ports
459 netxen_initialize_adapter_ops(adapter
);
461 adapter
->max_tx_desc_count
= MAX_CMD_DESCRIPTORS_HOST
;
462 if ((adapter
->ahw
.boardcfg
.board_type
== NETXEN_BRDTYPE_P2_SB35_4G
) ||
463 (adapter
->ahw
.boardcfg
.board_type
==
464 NETXEN_BRDTYPE_P2_SB31_2G
))
465 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
467 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS
;
468 adapter
->max_jumbo_rx_desc_count
= MAX_JUMBO_RCV_DESCRIPTORS
;
469 adapter
->max_lro_rx_desc_count
= MAX_LRO_RCV_DESCRIPTORS
;
471 cmd_buf_arr
= (struct netxen_cmd_buffer
*)vmalloc(TX_RINGSIZE
);
472 if (cmd_buf_arr
== NULL
) {
474 "%s: Could not allocate cmd_buf_arr memory:%d\n",
475 netxen_nic_driver_name
, (int)TX_RINGSIZE
);
477 goto err_out_free_adapter
;
479 memset(cmd_buf_arr
, 0, TX_RINGSIZE
);
480 adapter
->cmd_buf_arr
= cmd_buf_arr
;
482 for (i
= 0; i
< MAX_RCV_CTX
; ++i
) {
483 recv_ctx
= &adapter
->recv_ctx
[i
];
484 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
485 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
486 switch (RCV_DESC_TYPE(ring
)) {
487 case RCV_DESC_NORMAL
:
488 rcv_desc
->max_rx_desc_count
=
489 adapter
->max_rx_desc_count
;
490 rcv_desc
->flags
= RCV_DESC_NORMAL
;
491 rcv_desc
->dma_size
= RX_DMA_MAP_LEN
;
492 rcv_desc
->skb_size
= MAX_RX_BUFFER_LENGTH
;
496 rcv_desc
->max_rx_desc_count
=
497 adapter
->max_jumbo_rx_desc_count
;
498 rcv_desc
->flags
= RCV_DESC_JUMBO
;
499 rcv_desc
->dma_size
= RX_JUMBO_DMA_MAP_LEN
;
500 rcv_desc
->skb_size
= MAX_RX_JUMBO_BUFFER_LENGTH
;
504 rcv_desc
->max_rx_desc_count
=
505 adapter
->max_lro_rx_desc_count
;
506 rcv_desc
->flags
= RCV_DESC_LRO
;
507 rcv_desc
->dma_size
= RX_LRO_DMA_MAP_LEN
;
508 rcv_desc
->skb_size
= MAX_RX_LRO_BUFFER_LENGTH
;
512 rcv_desc
->rx_buf_arr
= (struct netxen_rx_buffer
*)
513 vmalloc(RCV_BUFFSIZE
);
515 if (rcv_desc
->rx_buf_arr
== NULL
) {
516 printk(KERN_ERR
"%s: Could not allocate "
517 "rcv_desc->rx_buf_arr memory:%d\n",
518 netxen_nic_driver_name
,
521 goto err_out_free_rx_buffer
;
523 memset(rcv_desc
->rx_buf_arr
, 0, RCV_BUFFSIZE
);
528 netxen_initialize_adapter_sw(adapter
); /* initialize the buffers in adapter */
530 /* Mezz cards have PCI function 0,2,3 enabled */
531 switch (adapter
->ahw
.boardcfg
.board_type
) {
532 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
533 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
534 if (pci_func_id
>= 2)
535 adapter
->portnum
= pci_func_id
- 2;
542 if(adapter
->portnum
== 0) {
543 netxen_pinit_from_rom(adapter
, 0);
545 netxen_load_firmware(adapter
);
549 init_timer(&adapter
->watchdog_timer
);
550 adapter
->ahw
.xg_linkup
= 0;
551 adapter
->watchdog_timer
.function
= &netxen_watchdog
;
552 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
553 INIT_WORK(&adapter
->watchdog_task
, netxen_watchdog_task
);
554 adapter
->ahw
.pdev
= pdev
;
555 adapter
->ahw
.revision_id
= pdev
->revision
;
557 /* make sure Window == 1 */
558 netxen_nic_pci_change_crbwindow(adapter
, 1);
560 netxen_nic_update_cmd_producer(adapter
, 0);
561 netxen_nic_update_cmd_consumer(adapter
, 0);
562 writel(0, NETXEN_CRB_NORMALIZE(adapter
, CRB_HOST_CMD_ADDR_LO
));
564 if (netxen_is_flash_supported(adapter
) == 0 &&
565 netxen_get_flash_mac_addr(adapter
, mac_addr
) == 0)
571 unsigned char *p
= (unsigned char *)&mac_addr
[adapter
->portnum
];
572 netdev
->dev_addr
[0] = *(p
+ 5);
573 netdev
->dev_addr
[1] = *(p
+ 4);
574 netdev
->dev_addr
[2] = *(p
+ 3);
575 netdev
->dev_addr
[3] = *(p
+ 2);
576 netdev
->dev_addr
[4] = *(p
+ 1);
577 netdev
->dev_addr
[5] = *(p
+ 0);
579 memcpy(netdev
->perm_addr
, netdev
->dev_addr
,
581 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
582 printk(KERN_ERR
"%s: Bad MAC address %s.\n",
583 netxen_nic_driver_name
,
584 print_mac(mac
, netdev
->dev_addr
));
586 if (adapter
->macaddr_set
)
587 adapter
->macaddr_set(adapter
,
592 if (adapter
->portnum
== 0) {
593 err
= netxen_initialize_adapter_offload(adapter
);
595 goto err_out_free_rx_buffer
;
596 val
= readl(NETXEN_CRB_NORMALIZE(adapter
,
597 NETXEN_CAM_RAM(0x1fc)));
598 if (val
== 0x55555555) {
599 /* This is the first boot after power up */
600 netxen_nic_read_w0(adapter
, NETXEN_PCIE_REG(0x4), &val
);
603 netxen_nic_write_w0(adapter
, NETXEN_PCIE_REG(0x4), val
);
604 netxen_nic_read_w0(adapter
, NETXEN_PCIE_REG(0x4), &val
);
606 printk(KERN_ERR
"%s: failed to set MSI bit in PCI-e reg\n",
607 netxen_nic_driver_name
);
609 val
= readl(NETXEN_CRB_NORMALIZE(adapter
,
610 NETXEN_ROMUSB_GLB_SW_RESET
));
611 printk(KERN_INFO
"NetXen: read 0x%08x for reset reg.\n",val
);
612 if (val
!= 0x80000f) {
613 /* clear the register for future unloads/loads */
614 writel(0, NETXEN_CRB_NORMALIZE(adapter
,
615 NETXEN_CAM_RAM(0x1fc)));
616 printk(KERN_ERR
"ERROR in NetXen HW init sequence.\n");
618 goto err_out_free_dev
;
622 /* clear the register for future unloads/loads */
623 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
624 printk(KERN_INFO
"State: 0x%0x\n",
625 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
628 * Tell the hardware our version number.
630 i
= (_NETXEN_NIC_LINUX_MAJOR
<< 16)
631 | ((_NETXEN_NIC_LINUX_MINOR
<< 8))
632 | (_NETXEN_NIC_LINUX_SUBVERSION
);
633 writel(i
, NETXEN_CRB_NORMALIZE(adapter
, CRB_DRIVER_VERSION
));
635 /* Unlock the HW, prompting the boot sequence */
637 NETXEN_CRB_NORMALIZE(adapter
,
638 NETXEN_ROMUSB_GLB_PEGTUNE_DONE
));
639 /* Handshake with the card before we register the devices. */
640 netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
644 * See if the firmware gave us a virtual-physical port mapping.
646 i
= readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_V2P(adapter
->portnum
)));
648 adapter
->physical_port
= i
;
650 netif_carrier_off(netdev
);
651 netif_stop_queue(netdev
);
653 if ((err
= register_netdev(netdev
))) {
654 printk(KERN_ERR
"%s: register_netdev failed port #%d"
655 " aborting\n", netxen_nic_driver_name
,
658 goto err_out_free_dev
;
661 pci_set_drvdata(pdev
, adapter
);
663 switch (adapter
->ahw
.board_type
) {
665 printk(KERN_INFO
"%s: QUAD GbE board initialized\n",
666 netxen_nic_driver_name
);
669 case NETXEN_NIC_XGBE
:
670 printk(KERN_INFO
"%s: XGbE board initialized\n",
671 netxen_nic_driver_name
);
675 adapter
->driver_mismatch
= 0;
680 if (adapter
->portnum
== 0)
681 netxen_free_adapter_offload(adapter
);
683 err_out_free_rx_buffer
:
684 for (i
= 0; i
< MAX_RCV_CTX
; ++i
) {
685 recv_ctx
= &adapter
->recv_ctx
[i
];
686 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
687 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
688 if (rcv_desc
->rx_buf_arr
!= NULL
) {
689 vfree(rcv_desc
->rx_buf_arr
);
690 rcv_desc
->rx_buf_arr
= NULL
;
696 err_out_free_adapter
:
697 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
698 pci_disable_msi(pdev
);
700 pci_set_drvdata(pdev
, NULL
);
717 pci_release_regions(pdev
);
719 err_out_disable_pdev
:
720 pci_disable_device(pdev
);
724 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
)
726 struct netxen_adapter
*adapter
;
727 struct net_device
*netdev
;
728 struct netxen_rx_buffer
*buffer
;
729 struct netxen_recv_context
*recv_ctx
;
730 struct netxen_rcv_desc_ctx
*rcv_desc
;
732 static int init_firmware_done
= 0;
734 adapter
= pci_get_drvdata(pdev
);
738 netdev
= adapter
->netdev
;
740 unregister_netdev(netdev
);
742 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
743 init_firmware_done
++;
744 netxen_free_hw_resources(adapter
);
747 for (ctxid
= 0; ctxid
< MAX_RCV_CTX
; ++ctxid
) {
748 recv_ctx
= &adapter
->recv_ctx
[ctxid
];
749 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
750 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
751 for (i
= 0; i
< rcv_desc
->max_rx_desc_count
; ++i
) {
752 buffer
= &(rcv_desc
->rx_buf_arr
[i
]);
753 if (buffer
->state
== NETXEN_BUFFER_FREE
)
755 pci_unmap_single(pdev
, buffer
->dma
,
758 if (buffer
->skb
!= NULL
)
759 dev_kfree_skb_any(buffer
->skb
);
761 vfree(rcv_desc
->rx_buf_arr
);
765 vfree(adapter
->cmd_buf_arr
);
767 if (adapter
->portnum
== 0) {
768 if (init_firmware_done
) {
771 if (dma_watchdog_shutdown_request(adapter
) == 1)
774 if (dma_watchdog_shutdown_poll_result(adapter
) == 1)
779 printk(KERN_ERR
"%s: dma_watchdog_shutdown failed\n",
782 /* clear the register for future unloads/loads */
783 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
784 printk(KERN_INFO
"State: 0x%0x\n",
785 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
787 /* leave the hw in the same state as reboot */
788 writel(0, NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
));
789 netxen_pinit_from_rom(adapter
, 0);
791 netxen_load_firmware(adapter
);
792 netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
795 /* clear the register for future unloads/loads */
796 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
797 printk(KERN_INFO
"State: 0x%0x\n",
798 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
802 if (dma_watchdog_shutdown_request(adapter
) == 1)
805 if (dma_watchdog_shutdown_poll_result(adapter
) == 1)
810 netxen_free_adapter_offload(adapter
);
812 printk(KERN_ERR
"%s: dma_watchdog_shutdown failed\n",
818 free_irq(adapter
->irq
, adapter
);
820 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
821 pci_disable_msi(pdev
);
823 iounmap(adapter
->ahw
.db_base
);
824 iounmap(adapter
->ahw
.pci_base0
);
825 iounmap(adapter
->ahw
.pci_base1
);
826 iounmap(adapter
->ahw
.pci_base2
);
828 pci_release_regions(pdev
);
829 pci_disable_device(pdev
);
830 pci_set_drvdata(pdev
, NULL
);
836 * Called when a network interface is made active
837 * @returns 0 on success, negative value on failure
839 static int netxen_nic_open(struct net_device
*netdev
)
841 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)netdev
->priv
;
844 irq_handler_t handler
;
845 unsigned long flags
= IRQF_SAMPLE_RANDOM
;
847 if (adapter
->is_up
!= NETXEN_ADAPTER_UP_MAGIC
) {
848 err
= netxen_init_firmware(adapter
);
850 printk(KERN_ERR
"Failed to init firmware\n");
853 netxen_nic_flash_print(adapter
);
855 /* setup all the resources for the Phantom... */
856 /* this include the descriptors for rcv, tx, and status */
857 netxen_nic_clear_stats(adapter
);
858 err
= netxen_nic_hw_resources(adapter
);
860 printk(KERN_ERR
"Error in setting hw resources:%d\n",
864 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
865 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++)
866 netxen_post_rx_buffers(adapter
, ctx
, ring
);
868 adapter
->irq
= adapter
->ahw
.pdev
->irq
;
869 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
870 handler
= netxen_msi_intr
;
872 flags
|= IRQF_SHARED
;
873 handler
= netxen_intr
;
875 err
= request_irq(adapter
->irq
, handler
,
876 flags
, netdev
->name
, adapter
);
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 /* Done here again so that even if phantom sw overwrote it,
887 if (adapter
->init_port
888 && adapter
->init_port(adapter
, adapter
->portnum
) != 0) {
889 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
890 netxen_nic_driver_name
, adapter
->portnum
);
893 if (adapter
->macaddr_set
)
894 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
896 netxen_nic_set_link_parameters(adapter
);
898 netxen_nic_set_multi(netdev
);
899 if (adapter
->set_mtu
)
900 adapter
->set_mtu(adapter
, netdev
->mtu
);
902 if (!adapter
->driver_mismatch
)
903 mod_timer(&adapter
->watchdog_timer
, jiffies
);
905 napi_enable(&adapter
->napi
);
906 netxen_nic_enable_int(adapter
);
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
);
926 napi_disable(&adapter
->napi
);
928 if (adapter
->stop_port
)
929 adapter
->stop_port(adapter
);
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
;
973 u32 producer
, consumer
;
974 u32 saved_producer
= 0;
975 struct cmd_desc_type0
*hwdesc
;
977 struct netxen_cmd_buffer
*pbuf
= NULL
;
980 u32 num_txd
= adapter
->max_tx_desc_count
;
982 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
984 /* There 4 fragments per descriptor */
985 no_of_desc
= (frag_count
+ 3) >> 2;
986 if (netdev
->features
& NETIF_F_TSO
) {
987 if (skb_shinfo(skb
)->gso_size
> 0) {
990 if ((ip_hdrlen(skb
) + tcp_hdrlen(skb
) +
991 sizeof(struct ethhdr
)) >
992 (sizeof(struct cmd_desc_type0
) - 2)) {
998 producer
= adapter
->cmd_producer
;
1000 consumer
= adapter
->last_cmd_consumer
;
1001 if ((no_of_desc
+2) > find_diff_among(producer
, consumer
, num_txd
)) {
1002 netif_stop_queue(netdev
);
1004 return NETDEV_TX_BUSY
;
1007 /* Copy the descriptors into the hardware */
1008 saved_producer
= producer
;
1009 hwdesc
= &hw
->cmd_desc_head
[producer
];
1010 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1011 /* Take skb->data itself */
1012 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1013 if ((netdev
->features
& NETIF_F_TSO
) && skb_shinfo(skb
)->gso_size
> 0) {
1014 pbuf
->mss
= skb_shinfo(skb
)->gso_size
;
1015 hwdesc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
1020 pbuf
->total_length
= skb
->len
;
1022 pbuf
->cmd
= TX_ETHER_PKT
;
1023 pbuf
->frag_count
= frag_count
;
1024 pbuf
->port
= adapter
->portnum
;
1025 buffrag
= &pbuf
->frag_array
[0];
1026 buffrag
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, first_seg_len
,
1028 buffrag
->length
= first_seg_len
;
1029 netxen_set_cmd_desc_totallength(hwdesc
, skb
->len
);
1030 netxen_set_cmd_desc_num_of_buff(hwdesc
, frag_count
);
1031 netxen_set_cmd_desc_opcode(hwdesc
, TX_ETHER_PKT
);
1033 netxen_set_cmd_desc_port(hwdesc
, adapter
->portnum
);
1034 netxen_set_cmd_desc_ctxid(hwdesc
, adapter
->portnum
);
1035 hwdesc
->buffer1_length
= cpu_to_le16(first_seg_len
);
1036 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
1038 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
1039 struct skb_frag_struct
*frag
;
1041 unsigned long offset
;
1042 dma_addr_t temp_dma
;
1044 /* move to next desc. if there is a need */
1045 if ((i
& 0x3) == 0) {
1047 producer
= get_next_index(producer
, num_txd
);
1048 hwdesc
= &hw
->cmd_desc_head
[producer
];
1049 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1050 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1053 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1055 offset
= frag
->page_offset
;
1058 temp_dma
= pci_map_page(adapter
->pdev
, frag
->page
, offset
,
1059 len
, PCI_DMA_TODEVICE
);
1062 buffrag
->dma
= temp_dma
;
1063 buffrag
->length
= temp_len
;
1067 hwdesc
->buffer1_length
= cpu_to_le16(temp_len
);
1068 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1071 hwdesc
->buffer2_length
= cpu_to_le16(temp_len
);
1072 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1075 hwdesc
->buffer3_length
= cpu_to_le16(temp_len
);
1076 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1079 hwdesc
->buffer4_length
= cpu_to_le16(temp_len
);
1080 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1085 producer
= get_next_index(producer
, num_txd
);
1087 /* might change opcode to TX_TCP_LSO */
1088 netxen_tso_check(adapter
, &hw
->cmd_desc_head
[saved_producer
], skb
);
1090 /* For LSO, we need to copy the MAC/IP/TCP headers into
1091 * the descriptor ring
1093 if (netxen_get_cmd_desc_opcode(&hw
->cmd_desc_head
[saved_producer
])
1095 int hdr_len
, first_hdr_len
, more_hdr
;
1096 hdr_len
= hw
->cmd_desc_head
[saved_producer
].total_hdr_length
;
1097 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1098 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1101 first_hdr_len
= hdr_len
;
1104 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1105 hwdesc
= &hw
->cmd_desc_head
[producer
];
1106 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1109 /* copy the first 64 bytes */
1110 memcpy(((void *)hwdesc
) + 2,
1111 (void *)(skb
->data
), first_hdr_len
);
1112 producer
= get_next_index(producer
, num_txd
);
1115 hwdesc
= &hw
->cmd_desc_head
[producer
];
1116 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1118 /* copy the next 64 bytes - should be enough except
1119 * for pathological case
1121 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1125 producer
= get_next_index(producer
, num_txd
);
1129 adapter
->cmd_producer
= producer
;
1130 adapter
->stats
.txbytes
+= skb
->len
;
1132 netxen_nic_update_cmd_producer(adapter
, adapter
->cmd_producer
);
1134 adapter
->stats
.xmitcalled
++;
1135 netdev
->trans_start
= jiffies
;
1137 return NETDEV_TX_OK
;
1140 static void netxen_watchdog(unsigned long v
)
1142 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1144 SCHEDULE_WORK(&adapter
->watchdog_task
);
1147 static void netxen_tx_timeout(struct net_device
*netdev
)
1149 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1150 netdev_priv(netdev
);
1151 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1154 static void netxen_tx_timeout_task(struct work_struct
*work
)
1156 struct netxen_adapter
*adapter
=
1157 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1159 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1160 netxen_nic_driver_name
, adapter
->netdev
->name
);
1162 netxen_nic_disable_int(adapter
);
1163 napi_disable(&adapter
->napi
);
1165 adapter
->netdev
->trans_start
= jiffies
;
1167 napi_enable(&adapter
->napi
);
1168 netxen_nic_enable_int(adapter
);
1169 netif_wake_queue(adapter
->netdev
);
1173 netxen_handle_int(struct netxen_adapter
*adapter
)
1175 netxen_nic_disable_int(adapter
);
1176 napi_schedule(&adapter
->napi
);
1179 irqreturn_t
netxen_intr(int irq
, void *data
)
1181 struct netxen_adapter
*adapter
= data
;
1184 our_int
= readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1185 /* not our interrupt */
1186 if ((our_int
& (0x80 << adapter
->portnum
)) == 0)
1189 if (adapter
->intr_scheme
== INTR_SCHEME_PERPORT
) {
1190 /* claim interrupt */
1191 writel(our_int
& ~((u32
)(0x80 << adapter
->portnum
)),
1192 NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1195 netxen_handle_int(adapter
);
1200 irqreturn_t
netxen_msi_intr(int irq
, void *data
)
1202 struct netxen_adapter
*adapter
= data
;
1204 netxen_handle_int(adapter
);
1208 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
)
1210 struct netxen_adapter
*adapter
= container_of(napi
, struct netxen_adapter
, napi
);
1215 tx_complete
= netxen_process_cmd_ring(adapter
);
1218 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1220 * Fairness issue. This will give undue weight to the
1221 * receive context 0.
1225 * To avoid starvation, we give each of our receivers,
1226 * a fraction of the quota. Sometimes, it might happen that we
1227 * have enough quota to process every packet, but since all the
1228 * packets are on one context, it gets only half of the quota,
1229 * and ends up not processing it.
1231 work_done
+= netxen_process_rcv_ring(adapter
, ctx
,
1232 budget
/ MAX_RCV_CTX
);
1235 if ((work_done
< budget
) && tx_complete
) {
1236 netif_rx_complete(adapter
->netdev
, &adapter
->napi
);
1237 netxen_nic_enable_int(adapter
);
1243 #ifdef CONFIG_NET_POLL_CONTROLLER
1244 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1246 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1247 disable_irq(adapter
->irq
);
1248 netxen_intr(adapter
->irq
, adapter
);
1249 enable_irq(adapter
->irq
);
1253 static struct pci_driver netxen_driver
= {
1254 .name
= netxen_nic_driver_name
,
1255 .id_table
= netxen_pci_tbl
,
1256 .probe
= netxen_nic_probe
,
1257 .remove
= __devexit_p(netxen_nic_remove
)
1260 /* Driver Registration on NetXen card */
1262 static int __init
netxen_init_module(void)
1264 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == NULL
)
1267 return pci_register_driver(&netxen_driver
);
1270 module_init(netxen_init_module
);
1272 static void __exit
netxen_exit_module(void)
1275 * Wait for some time to allow the dma to drain, if any.
1278 pci_unregister_driver(&netxen_driver
);
1279 destroy_workqueue(netxen_workq
);
1282 module_exit(netxen_exit_module
);