2 * Copyright (C) 2003 - 2006 NetXen, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
23 * Contact Information:
26 * 3965 Freedom Circle, Fourth floor,
27 * Santa Clara, CA 95054
30 * Main source file for NetXen NIC Driver on Linux
34 #include <linux/vmalloc.h>
35 #include <linux/highmem.h>
36 #include "netxen_nic_hw.h"
38 #include "netxen_nic.h"
39 #include "netxen_nic_phan_reg.h"
41 #include <linux/dma-mapping.h>
44 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID
);
48 char netxen_nic_driver_name
[] = "netxen_nic";
49 static char netxen_nic_driver_string
[] = "NetXen Network Driver version "
50 NETXEN_NIC_LINUX_VERSIONID
;
52 #define NETXEN_NETDEV_WEIGHT 120
53 #define NETXEN_ADAPTER_UP_MAGIC 777
54 #define NETXEN_NIC_PEG_TUNE 0
56 /* Local functions to NetXen NIC driver */
57 static int __devinit
netxen_nic_probe(struct pci_dev
*pdev
,
58 const struct pci_device_id
*ent
);
59 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
);
60 static int netxen_nic_open(struct net_device
*netdev
);
61 static int netxen_nic_close(struct net_device
*netdev
);
62 static int netxen_nic_xmit_frame(struct sk_buff
*, struct net_device
*);
63 static void netxen_tx_timeout(struct net_device
*netdev
);
64 static void netxen_tx_timeout_task(struct work_struct
*work
);
65 static void netxen_watchdog(unsigned long);
66 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
);
67 #ifdef CONFIG_NET_POLL_CONTROLLER
68 static void netxen_nic_poll_controller(struct net_device
*netdev
);
70 static irqreturn_t
netxen_intr(int irq
, void *data
);
71 static irqreturn_t
netxen_msi_intr(int irq
, void *data
);
73 int physical_port
[] = {0, 1, 2, 3};
75 /* PCI Device ID Table */
76 static struct pci_device_id netxen_pci_tbl
[] __devinitdata
= {
77 {PCI_DEVICE(0x4040, 0x0001)},
78 {PCI_DEVICE(0x4040, 0x0002)},
79 {PCI_DEVICE(0x4040, 0x0003)},
80 {PCI_DEVICE(0x4040, 0x0004)},
81 {PCI_DEVICE(0x4040, 0x0005)},
82 {PCI_DEVICE(0x4040, 0x0024)},
83 {PCI_DEVICE(0x4040, 0x0025)},
87 MODULE_DEVICE_TABLE(pci
, netxen_pci_tbl
);
90 * In netxen_nic_down(), we must wait for any pending callback requests into
91 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
92 * reenabled right after it is deleted in netxen_nic_down().
93 * FLUSH_SCHEDULED_WORK() does this synchronization.
95 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
96 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
97 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
98 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
99 * linkwatch_event() to be executed which also attempts to acquire the rtnl
100 * lock thus causing a deadlock.
103 static struct workqueue_struct
*netxen_workq
;
104 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
105 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
107 static void netxen_watchdog(unsigned long);
109 static void netxen_nic_update_cmd_producer(struct netxen_adapter
*adapter
,
110 uint32_t crb_producer
)
112 switch (adapter
->portnum
) {
114 writel(crb_producer
, NETXEN_CRB_NORMALIZE
115 (adapter
, CRB_CMD_PRODUCER_OFFSET
));
118 writel(crb_producer
, NETXEN_CRB_NORMALIZE
119 (adapter
, CRB_CMD_PRODUCER_OFFSET_1
));
122 writel(crb_producer
, NETXEN_CRB_NORMALIZE
123 (adapter
, CRB_CMD_PRODUCER_OFFSET_2
));
126 writel(crb_producer
, NETXEN_CRB_NORMALIZE
127 (adapter
, CRB_CMD_PRODUCER_OFFSET_3
));
130 printk(KERN_WARNING
"We tried to update "
131 "CRB_CMD_PRODUCER_OFFSET for invalid "
132 "PCI function id %d\n",
138 static void netxen_nic_update_cmd_consumer(struct netxen_adapter
*adapter
,
141 switch (adapter
->portnum
) {
143 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
144 (adapter
, CRB_CMD_CONSUMER_OFFSET
));
147 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
148 (adapter
, CRB_CMD_CONSUMER_OFFSET_1
));
151 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
152 (adapter
, CRB_CMD_CONSUMER_OFFSET_2
));
155 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
156 (adapter
, CRB_CMD_CONSUMER_OFFSET_3
));
159 printk(KERN_WARNING
"We tried to update "
160 "CRB_CMD_PRODUCER_OFFSET for invalid "
161 "PCI function id %d\n",
167 #define ADAPTER_LIST_SIZE 12
169 static uint32_t msi_tgt_status
[4] = {
170 ISR_INT_TARGET_STATUS
, ISR_INT_TARGET_STATUS_F1
,
171 ISR_INT_TARGET_STATUS_F2
, ISR_INT_TARGET_STATUS_F3
174 static uint32_t sw_int_mask
[4] = {
175 CRB_SW_INT_MASK_0
, CRB_SW_INT_MASK_1
,
176 CRB_SW_INT_MASK_2
, CRB_SW_INT_MASK_3
179 static void netxen_nic_disable_int(struct netxen_adapter
*adapter
)
183 int port
= adapter
->portnum
;
184 int pci_fn
= adapter
->ahw
.pci_func
;
186 if (adapter
->msi_mode
!= MSI_MODE_MULTIFUNC
)
187 writel(0x0, NETXEN_CRB_NORMALIZE(adapter
, sw_int_mask
[port
]));
189 if (adapter
->intr_scheme
!= -1 &&
190 adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
)
191 writel(mask
,PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_MASK
));
193 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
196 PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_TARGET_STATUS
));
197 mask
= readl(pci_base_offset(adapter
, ISR_INT_VECTOR
));
204 printk(KERN_NOTICE
"%s: Failed to disable interrupt completely\n",
205 netxen_nic_driver_name
);
208 if (adapter
->msi_mode
== MSI_MODE_MULTIFUNC
) {
209 writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter
,
210 msi_tgt_status
[pci_fn
]));
215 static void netxen_nic_enable_int(struct netxen_adapter
*adapter
)
218 int port
= adapter
->portnum
;
220 DPRINTK(1, INFO
, "Entered ISR Enable \n");
222 if (adapter
->intr_scheme
!= -1 &&
223 adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
) {
224 switch (adapter
->ahw
.board_type
) {
228 case NETXEN_NIC_XGBE
:
236 writel(mask
, PCI_OFFSET_SECOND_RANGE(adapter
, ISR_INT_MASK
));
239 writel(0x1, NETXEN_CRB_NORMALIZE(adapter
, sw_int_mask
[port
]));
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 __le64 mac_addr
[FLASH_NUM_PORTS
+ 1];
288 int pci_func_id
= PCI_FUNC(pdev
->devfn
);
289 DECLARE_MAC_BUF(mac
);
291 printk(KERN_INFO
"%s \n", netxen_nic_driver_string
);
293 if (pdev
->class != 0x020000) {
294 printk(KERN_ERR
"NetXen function %d, class %x will not "
295 "be enabled.\n",pci_func_id
, pdev
->class);
298 if ((err
= pci_enable_device(pdev
)))
300 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
302 goto err_out_disable_pdev
;
305 if ((err
= pci_request_regions(pdev
, netxen_nic_driver_name
)))
306 goto err_out_disable_pdev
;
308 pci_set_master(pdev
);
309 if (pdev
->revision
== NX_P2_C1
&&
310 (pci_set_dma_mask(pdev
, DMA_35BIT_MASK
) == 0) &&
311 (pci_set_consistent_dma_mask(pdev
, DMA_35BIT_MASK
) == 0)) {
314 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) ||
315 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
)))
316 goto err_out_free_res
;
322 netdev
= alloc_etherdev(sizeof(struct netxen_adapter
));
324 printk(KERN_ERR
"%s: Failed to allocate memory for the "
325 "device block.Check system memory resource"
326 " usage.\n", netxen_nic_driver_name
);
327 goto err_out_free_res
;
330 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
332 adapter
= netdev
->priv
;
334 adapter
->ahw
.pdev
= pdev
;
335 adapter
->ahw
.pci_func
= pci_func_id
;
337 /* remap phys address */
338 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
339 mem_len
= pci_resource_len(pdev
, 0);
341 /* 128 Meg of memory */
342 if (mem_len
== NETXEN_PCI_128MB_SIZE
) {
343 mem_ptr0
= ioremap(mem_base
, FIRST_PAGE_GROUP_SIZE
);
344 mem_ptr1
= ioremap(mem_base
+ SECOND_PAGE_GROUP_START
,
345 SECOND_PAGE_GROUP_SIZE
);
346 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
,
347 THIRD_PAGE_GROUP_SIZE
);
348 first_page_group_start
= FIRST_PAGE_GROUP_START
;
349 first_page_group_end
= FIRST_PAGE_GROUP_END
;
350 } else if (mem_len
== NETXEN_PCI_32MB_SIZE
) {
351 mem_ptr1
= ioremap(mem_base
, SECOND_PAGE_GROUP_SIZE
);
352 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
-
353 SECOND_PAGE_GROUP_START
, THIRD_PAGE_GROUP_SIZE
);
354 first_page_group_start
= 0;
355 first_page_group_end
= 0;
358 goto err_out_free_netdev
;
361 if ((!mem_ptr0
&& mem_len
== NETXEN_PCI_128MB_SIZE
) ||
362 !mem_ptr1
|| !mem_ptr2
) {
364 "Cannot remap adapter memory aborting.:"
365 "0 -> %p, 1 -> %p, 2 -> %p\n",
366 mem_ptr0
, mem_ptr1
, mem_ptr2
);
369 goto err_out_iounmap
;
371 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
372 db_len
= pci_resource_len(pdev
, 4);
375 printk(KERN_ERR
"%s: doorbell is disabled\n",
376 netxen_nic_driver_name
);
378 goto err_out_iounmap
;
380 DPRINTK(INFO
, "doorbell ioremap from %lx a size of %lx\n", db_base
,
383 db_ptr
= ioremap(db_base
, NETXEN_DB_MAPSIZE_BYTES
);
385 printk(KERN_ERR
"%s: Failed to allocate doorbell map.",
386 netxen_nic_driver_name
);
388 goto err_out_iounmap
;
390 DPRINTK(INFO
, "doorbell ioremaped at %p\n", db_ptr
);
392 adapter
->ahw
.pci_base0
= mem_ptr0
;
393 adapter
->ahw
.first_page_group_start
= first_page_group_start
;
394 adapter
->ahw
.first_page_group_end
= first_page_group_end
;
395 adapter
->ahw
.pci_base1
= mem_ptr1
;
396 adapter
->ahw
.pci_base2
= mem_ptr2
;
397 adapter
->ahw
.db_base
= db_ptr
;
398 adapter
->ahw
.db_len
= db_len
;
400 adapter
->netdev
= netdev
;
401 adapter
->pdev
= pdev
;
403 netif_napi_add(netdev
, &adapter
->napi
,
404 netxen_nic_poll
, NETXEN_NETDEV_WEIGHT
);
406 /* this will be read from FW later */
407 adapter
->intr_scheme
= -1;
408 adapter
->msi_mode
= -1;
410 /* This will be reset for mezz cards */
411 adapter
->portnum
= pci_func_id
;
412 adapter
->status
&= ~NETXEN_NETDEV_STATUS
;
413 adapter
->rx_csum
= 1;
415 netdev
->open
= netxen_nic_open
;
416 netdev
->stop
= netxen_nic_close
;
417 netdev
->hard_start_xmit
= netxen_nic_xmit_frame
;
418 netdev
->get_stats
= netxen_nic_get_stats
;
419 netdev
->set_multicast_list
= netxen_nic_set_multi
;
420 netdev
->set_mac_address
= netxen_nic_set_mac
;
421 netdev
->change_mtu
= netxen_nic_change_mtu
;
422 netdev
->tx_timeout
= netxen_tx_timeout
;
423 netdev
->watchdog_timeo
= 2*HZ
;
425 netxen_nic_change_mtu(netdev
, netdev
->mtu
);
427 SET_ETHTOOL_OPS(netdev
, &netxen_nic_ethtool_ops
);
428 #ifdef CONFIG_NET_POLL_CONTROLLER
429 netdev
->poll_controller
= netxen_nic_poll_controller
;
431 /* ScatterGather support */
432 netdev
->features
= NETIF_F_SG
;
433 netdev
->features
|= NETIF_F_IP_CSUM
;
434 netdev
->features
|= NETIF_F_TSO
;
437 netdev
->features
|= NETIF_F_HIGHDMA
;
439 if (pci_enable_msi(pdev
))
440 adapter
->flags
&= ~NETXEN_NIC_MSI_ENABLED
;
442 adapter
->flags
|= NETXEN_NIC_MSI_ENABLED
;
444 netdev
->irq
= pdev
->irq
;
445 INIT_WORK(&adapter
->tx_timeout_task
, netxen_tx_timeout_task
);
448 * Set the CRB window to invalid. If any register in window 0 is
449 * accessed it should set the window to 0 and then reset it to 1.
451 adapter
->curr_window
= 255;
453 /* initialize the adapter */
454 netxen_initialize_adapter_hw(adapter
);
457 * Adapter in our case is quad port so initialize it before
458 * initializing the ports
461 netxen_initialize_adapter_ops(adapter
);
463 adapter
->max_tx_desc_count
= MAX_CMD_DESCRIPTORS_HOST
;
464 if ((adapter
->ahw
.boardcfg
.board_type
== NETXEN_BRDTYPE_P2_SB35_4G
) ||
465 (adapter
->ahw
.boardcfg
.board_type
==
466 NETXEN_BRDTYPE_P2_SB31_2G
))
467 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
469 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS
;
470 adapter
->max_jumbo_rx_desc_count
= MAX_JUMBO_RCV_DESCRIPTORS
;
471 adapter
->max_lro_rx_desc_count
= MAX_LRO_RCV_DESCRIPTORS
;
473 cmd_buf_arr
= (struct netxen_cmd_buffer
*)vmalloc(TX_RINGSIZE
);
474 if (cmd_buf_arr
== NULL
) {
476 "%s: Could not allocate cmd_buf_arr memory:%d\n",
477 netxen_nic_driver_name
, (int)TX_RINGSIZE
);
479 goto err_out_free_adapter
;
481 memset(cmd_buf_arr
, 0, TX_RINGSIZE
);
482 adapter
->cmd_buf_arr
= cmd_buf_arr
;
484 for (i
= 0; i
< MAX_RCV_CTX
; ++i
) {
485 recv_ctx
= &adapter
->recv_ctx
[i
];
486 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
487 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
488 switch (RCV_DESC_TYPE(ring
)) {
489 case RCV_DESC_NORMAL
:
490 rcv_desc
->max_rx_desc_count
=
491 adapter
->max_rx_desc_count
;
492 rcv_desc
->flags
= RCV_DESC_NORMAL
;
493 rcv_desc
->dma_size
= RX_DMA_MAP_LEN
;
494 rcv_desc
->skb_size
= MAX_RX_BUFFER_LENGTH
;
498 rcv_desc
->max_rx_desc_count
=
499 adapter
->max_jumbo_rx_desc_count
;
500 rcv_desc
->flags
= RCV_DESC_JUMBO
;
501 rcv_desc
->dma_size
= RX_JUMBO_DMA_MAP_LEN
;
502 rcv_desc
->skb_size
= MAX_RX_JUMBO_BUFFER_LENGTH
;
506 rcv_desc
->max_rx_desc_count
=
507 adapter
->max_lro_rx_desc_count
;
508 rcv_desc
->flags
= RCV_DESC_LRO
;
509 rcv_desc
->dma_size
= RX_LRO_DMA_MAP_LEN
;
510 rcv_desc
->skb_size
= MAX_RX_LRO_BUFFER_LENGTH
;
514 rcv_desc
->rx_buf_arr
= (struct netxen_rx_buffer
*)
515 vmalloc(RCV_BUFFSIZE
);
517 if (rcv_desc
->rx_buf_arr
== NULL
) {
518 printk(KERN_ERR
"%s: Could not allocate "
519 "rcv_desc->rx_buf_arr memory:%d\n",
520 netxen_nic_driver_name
,
523 goto err_out_free_rx_buffer
;
525 memset(rcv_desc
->rx_buf_arr
, 0, RCV_BUFFSIZE
);
530 netxen_initialize_adapter_sw(adapter
); /* initialize the buffers in adapter */
532 /* Mezz cards have PCI function 0,2,3 enabled */
533 switch (adapter
->ahw
.boardcfg
.board_type
) {
534 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
535 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
536 if (pci_func_id
>= 2)
537 adapter
->portnum
= pci_func_id
- 2;
544 if(adapter
->portnum
== 0) {
545 netxen_pinit_from_rom(adapter
, 0);
547 netxen_load_firmware(adapter
);
551 init_timer(&adapter
->watchdog_timer
);
552 adapter
->ahw
.xg_linkup
= 0;
553 adapter
->watchdog_timer
.function
= &netxen_watchdog
;
554 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
555 INIT_WORK(&adapter
->watchdog_task
, netxen_watchdog_task
);
556 adapter
->ahw
.pdev
= pdev
;
557 adapter
->ahw
.revision_id
= pdev
->revision
;
559 /* make sure Window == 1 */
560 netxen_nic_pci_change_crbwindow(adapter
, 1);
562 netxen_nic_update_cmd_producer(adapter
, 0);
563 netxen_nic_update_cmd_consumer(adapter
, 0);
564 writel(0, NETXEN_CRB_NORMALIZE(adapter
, CRB_HOST_CMD_ADDR_LO
));
566 if (netxen_is_flash_supported(adapter
) == 0 &&
567 netxen_get_flash_mac_addr(adapter
, mac_addr
) == 0)
573 unsigned char *p
= (unsigned char *)&mac_addr
[adapter
->portnum
];
574 netdev
->dev_addr
[0] = *(p
+ 5);
575 netdev
->dev_addr
[1] = *(p
+ 4);
576 netdev
->dev_addr
[2] = *(p
+ 3);
577 netdev
->dev_addr
[3] = *(p
+ 2);
578 netdev
->dev_addr
[4] = *(p
+ 1);
579 netdev
->dev_addr
[5] = *(p
+ 0);
581 memcpy(netdev
->perm_addr
, netdev
->dev_addr
,
583 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
584 printk(KERN_ERR
"%s: Bad MAC address %s.\n",
585 netxen_nic_driver_name
,
586 print_mac(mac
, netdev
->dev_addr
));
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
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
745 init_firmware_done
++;
746 netxen_free_hw_resources(adapter
);
749 for (ctxid
= 0; ctxid
< MAX_RCV_CTX
; ++ctxid
) {
750 recv_ctx
= &adapter
->recv_ctx
[ctxid
];
751 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
752 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
753 for (i
= 0; i
< rcv_desc
->max_rx_desc_count
; ++i
) {
754 buffer
= &(rcv_desc
->rx_buf_arr
[i
]);
755 if (buffer
->state
== NETXEN_BUFFER_FREE
)
757 pci_unmap_single(pdev
, buffer
->dma
,
760 if (buffer
->skb
!= NULL
)
761 dev_kfree_skb_any(buffer
->skb
);
763 vfree(rcv_desc
->rx_buf_arr
);
767 vfree(adapter
->cmd_buf_arr
);
769 if (adapter
->portnum
== 0) {
770 if (init_firmware_done
) {
773 if (dma_watchdog_shutdown_request(adapter
) == 1)
776 if (dma_watchdog_shutdown_poll_result(adapter
) == 1)
781 printk(KERN_ERR
"%s: dma_watchdog_shutdown failed\n",
784 /* clear the register for future unloads/loads */
785 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
786 printk(KERN_INFO
"State: 0x%0x\n",
787 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
789 /* leave the hw in the same state as reboot */
790 writel(0, NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
));
791 netxen_pinit_from_rom(adapter
, 0);
793 netxen_load_firmware(adapter
);
794 netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
797 /* clear the register for future unloads/loads */
798 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
799 printk(KERN_INFO
"State: 0x%0x\n",
800 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
804 if (dma_watchdog_shutdown_request(adapter
) == 1)
807 if (dma_watchdog_shutdown_poll_result(adapter
) == 1)
812 netxen_free_adapter_offload(adapter
);
814 printk(KERN_ERR
"%s: dma_watchdog_shutdown failed\n",
820 free_irq(adapter
->irq
, adapter
);
822 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
823 pci_disable_msi(pdev
);
825 iounmap(adapter
->ahw
.db_base
);
826 iounmap(adapter
->ahw
.pci_base0
);
827 iounmap(adapter
->ahw
.pci_base1
);
828 iounmap(adapter
->ahw
.pci_base2
);
830 pci_release_regions(pdev
);
831 pci_disable_device(pdev
);
832 pci_set_drvdata(pdev
, NULL
);
838 * Called when a network interface is made active
839 * @returns 0 on success, negative value on failure
841 static int netxen_nic_open(struct net_device
*netdev
)
843 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)netdev
->priv
;
846 irq_handler_t handler
;
847 unsigned long flags
= IRQF_SAMPLE_RANDOM
;
849 if (adapter
->is_up
!= NETXEN_ADAPTER_UP_MAGIC
) {
850 err
= netxen_init_firmware(adapter
);
852 printk(KERN_ERR
"Failed to init firmware\n");
855 netxen_nic_flash_print(adapter
);
857 /* setup all the resources for the Phantom... */
858 /* this include the descriptors for rcv, tx, and status */
859 netxen_nic_clear_stats(adapter
);
860 err
= netxen_nic_hw_resources(adapter
);
862 printk(KERN_ERR
"Error in setting hw resources:%d\n",
866 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
867 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++)
868 netxen_post_rx_buffers(adapter
, ctx
, ring
);
870 adapter
->irq
= adapter
->ahw
.pdev
->irq
;
871 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
872 handler
= netxen_msi_intr
;
874 flags
|= IRQF_SHARED
;
875 handler
= netxen_intr
;
877 err
= request_irq(adapter
->irq
, handler
,
878 flags
, netdev
->name
, adapter
);
880 printk(KERN_ERR
"request_irq failed with: %d\n", err
);
881 netxen_free_hw_resources(adapter
);
885 adapter
->is_up
= NETXEN_ADAPTER_UP_MAGIC
;
887 /* Done here again so that even if phantom sw overwrote it,
889 if (adapter
->init_port
890 && adapter
->init_port(adapter
, adapter
->portnum
) != 0) {
891 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
892 netxen_nic_driver_name
, adapter
->portnum
);
895 if (adapter
->macaddr_set
)
896 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
898 netxen_nic_set_link_parameters(adapter
);
900 netxen_nic_set_multi(netdev
);
901 if (adapter
->set_mtu
)
902 adapter
->set_mtu(adapter
, netdev
->mtu
);
904 if (!adapter
->driver_mismatch
)
905 mod_timer(&adapter
->watchdog_timer
, jiffies
);
907 napi_enable(&adapter
->napi
);
908 netxen_nic_enable_int(adapter
);
910 if (!adapter
->driver_mismatch
)
911 netif_start_queue(netdev
);
917 * netxen_nic_close - Disables a network interface entry point
919 static int netxen_nic_close(struct net_device
*netdev
)
921 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
923 struct netxen_cmd_buffer
*cmd_buff
;
924 struct netxen_skb_frag
*buffrag
;
926 netif_carrier_off(netdev
);
927 netif_stop_queue(netdev
);
928 napi_disable(&adapter
->napi
);
930 if (adapter
->stop_port
)
931 adapter
->stop_port(adapter
);
933 netxen_nic_disable_int(adapter
);
935 cmd_buff
= adapter
->cmd_buf_arr
;
936 for (i
= 0; i
< adapter
->max_tx_desc_count
; i
++) {
937 buffrag
= cmd_buff
->frag_array
;
939 pci_unmap_single(adapter
->pdev
, buffrag
->dma
,
940 buffrag
->length
, PCI_DMA_TODEVICE
);
943 for (j
= 0; j
< cmd_buff
->frag_count
; j
++) {
946 pci_unmap_page(adapter
->pdev
, buffrag
->dma
,
952 /* Free the skb we received in netxen_nic_xmit_frame */
954 dev_kfree_skb_any(cmd_buff
->skb
);
955 cmd_buff
->skb
= NULL
;
959 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
960 FLUSH_SCHEDULED_WORK();
961 del_timer_sync(&adapter
->watchdog_timer
);
967 static int netxen_nic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
969 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
970 struct netxen_hardware_context
*hw
= &adapter
->ahw
;
971 unsigned int first_seg_len
= skb
->len
- skb
->data_len
;
972 struct netxen_skb_frag
*buffrag
;
975 u32 producer
, consumer
;
976 u32 saved_producer
= 0;
977 struct cmd_desc_type0
*hwdesc
;
979 struct netxen_cmd_buffer
*pbuf
= NULL
;
982 u32 num_txd
= adapter
->max_tx_desc_count
;
984 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
986 /* There 4 fragments per descriptor */
987 no_of_desc
= (frag_count
+ 3) >> 2;
988 if (netdev
->features
& NETIF_F_TSO
) {
989 if (skb_shinfo(skb
)->gso_size
> 0) {
992 if ((ip_hdrlen(skb
) + tcp_hdrlen(skb
) +
993 sizeof(struct ethhdr
)) >
994 (sizeof(struct cmd_desc_type0
) - 2)) {
1000 producer
= adapter
->cmd_producer
;
1002 consumer
= adapter
->last_cmd_consumer
;
1003 if ((no_of_desc
+2) > find_diff_among(producer
, consumer
, num_txd
)) {
1004 netif_stop_queue(netdev
);
1006 return NETDEV_TX_BUSY
;
1009 /* Copy the descriptors into the hardware */
1010 saved_producer
= producer
;
1011 hwdesc
= &hw
->cmd_desc_head
[producer
];
1012 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1013 /* Take skb->data itself */
1014 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1015 if ((netdev
->features
& NETIF_F_TSO
) && skb_shinfo(skb
)->gso_size
> 0) {
1016 pbuf
->mss
= skb_shinfo(skb
)->gso_size
;
1017 hwdesc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
1022 pbuf
->total_length
= skb
->len
;
1024 pbuf
->cmd
= TX_ETHER_PKT
;
1025 pbuf
->frag_count
= frag_count
;
1026 pbuf
->port
= adapter
->portnum
;
1027 buffrag
= &pbuf
->frag_array
[0];
1028 buffrag
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, first_seg_len
,
1030 buffrag
->length
= first_seg_len
;
1031 netxen_set_cmd_desc_totallength(hwdesc
, skb
->len
);
1032 netxen_set_cmd_desc_num_of_buff(hwdesc
, frag_count
);
1033 netxen_set_cmd_desc_opcode(hwdesc
, TX_ETHER_PKT
);
1035 netxen_set_cmd_desc_port(hwdesc
, adapter
->portnum
);
1036 netxen_set_cmd_desc_ctxid(hwdesc
, adapter
->portnum
);
1037 hwdesc
->buffer1_length
= cpu_to_le16(first_seg_len
);
1038 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
1040 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
1041 struct skb_frag_struct
*frag
;
1043 unsigned long offset
;
1044 dma_addr_t temp_dma
;
1046 /* move to next desc. if there is a need */
1047 if ((i
& 0x3) == 0) {
1049 producer
= get_next_index(producer
, num_txd
);
1050 hwdesc
= &hw
->cmd_desc_head
[producer
];
1051 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1052 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1055 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1057 offset
= frag
->page_offset
;
1060 temp_dma
= pci_map_page(adapter
->pdev
, frag
->page
, offset
,
1061 len
, PCI_DMA_TODEVICE
);
1064 buffrag
->dma
= temp_dma
;
1065 buffrag
->length
= temp_len
;
1069 hwdesc
->buffer1_length
= cpu_to_le16(temp_len
);
1070 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1073 hwdesc
->buffer2_length
= cpu_to_le16(temp_len
);
1074 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1077 hwdesc
->buffer3_length
= cpu_to_le16(temp_len
);
1078 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1081 hwdesc
->buffer4_length
= cpu_to_le16(temp_len
);
1082 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1087 producer
= get_next_index(producer
, num_txd
);
1089 /* might change opcode to TX_TCP_LSO */
1090 netxen_tso_check(adapter
, &hw
->cmd_desc_head
[saved_producer
], skb
);
1092 /* For LSO, we need to copy the MAC/IP/TCP headers into
1093 * the descriptor ring
1095 if (netxen_get_cmd_desc_opcode(&hw
->cmd_desc_head
[saved_producer
])
1097 int hdr_len
, first_hdr_len
, more_hdr
;
1098 hdr_len
= hw
->cmd_desc_head
[saved_producer
].total_hdr_length
;
1099 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1100 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1103 first_hdr_len
= hdr_len
;
1106 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1107 hwdesc
= &hw
->cmd_desc_head
[producer
];
1108 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1111 /* copy the first 64 bytes */
1112 memcpy(((void *)hwdesc
) + 2,
1113 (void *)(skb
->data
), first_hdr_len
);
1114 producer
= get_next_index(producer
, num_txd
);
1117 hwdesc
= &hw
->cmd_desc_head
[producer
];
1118 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1120 /* copy the next 64 bytes - should be enough except
1121 * for pathological case
1123 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1127 producer
= get_next_index(producer
, num_txd
);
1131 adapter
->cmd_producer
= producer
;
1132 adapter
->stats
.txbytes
+= skb
->len
;
1134 netxen_nic_update_cmd_producer(adapter
, adapter
->cmd_producer
);
1136 adapter
->stats
.xmitcalled
++;
1137 netdev
->trans_start
= jiffies
;
1139 return NETDEV_TX_OK
;
1142 static void netxen_watchdog(unsigned long v
)
1144 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1146 SCHEDULE_WORK(&adapter
->watchdog_task
);
1149 static void netxen_tx_timeout(struct net_device
*netdev
)
1151 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1152 netdev_priv(netdev
);
1153 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1156 static void netxen_tx_timeout_task(struct work_struct
*work
)
1158 struct netxen_adapter
*adapter
=
1159 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1161 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1162 netxen_nic_driver_name
, adapter
->netdev
->name
);
1164 netxen_nic_disable_int(adapter
);
1165 napi_disable(&adapter
->napi
);
1167 adapter
->netdev
->trans_start
= jiffies
;
1169 napi_enable(&adapter
->napi
);
1170 netxen_nic_enable_int(adapter
);
1171 netif_wake_queue(adapter
->netdev
);
1175 netxen_handle_int(struct netxen_adapter
*adapter
)
1177 netxen_nic_disable_int(adapter
);
1178 napi_schedule(&adapter
->napi
);
1181 irqreturn_t
netxen_intr(int irq
, void *data
)
1183 struct netxen_adapter
*adapter
= data
;
1186 our_int
= readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1187 /* not our interrupt */
1188 if ((our_int
& (0x80 << adapter
->portnum
)) == 0)
1191 if (adapter
->intr_scheme
== INTR_SCHEME_PERPORT
) {
1192 /* claim interrupt */
1193 writel(our_int
& ~((u32
)(0x80 << adapter
->portnum
)),
1194 NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1197 netxen_handle_int(adapter
);
1202 irqreturn_t
netxen_msi_intr(int irq
, void *data
)
1204 struct netxen_adapter
*adapter
= data
;
1206 netxen_handle_int(adapter
);
1210 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
)
1212 struct netxen_adapter
*adapter
= container_of(napi
, struct netxen_adapter
, napi
);
1217 tx_complete
= netxen_process_cmd_ring(adapter
);
1220 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1222 * Fairness issue. This will give undue weight to the
1223 * receive context 0.
1227 * To avoid starvation, we give each of our receivers,
1228 * a fraction of the quota. Sometimes, it might happen that we
1229 * have enough quota to process every packet, but since all the
1230 * packets are on one context, it gets only half of the quota,
1231 * and ends up not processing it.
1233 work_done
+= netxen_process_rcv_ring(adapter
, ctx
,
1234 budget
/ MAX_RCV_CTX
);
1237 if ((work_done
< budget
) && tx_complete
) {
1238 netif_rx_complete(adapter
->netdev
, &adapter
->napi
);
1239 netxen_nic_enable_int(adapter
);
1245 #ifdef CONFIG_NET_POLL_CONTROLLER
1246 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1248 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1249 disable_irq(adapter
->irq
);
1250 netxen_intr(adapter
->irq
, adapter
);
1251 enable_irq(adapter
->irq
);
1255 static struct pci_driver netxen_driver
= {
1256 .name
= netxen_nic_driver_name
,
1257 .id_table
= netxen_pci_tbl
,
1258 .probe
= netxen_nic_probe
,
1259 .remove
= __devexit_p(netxen_nic_remove
)
1262 /* Driver Registration on NetXen card */
1264 static int __init
netxen_init_module(void)
1266 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == NULL
)
1269 return pci_register_driver(&netxen_driver
);
1272 module_init(netxen_init_module
);
1274 static void __exit
netxen_exit_module(void)
1277 * Wait for some time to allow the dma to drain, if any.
1280 pci_unregister_driver(&netxen_driver
);
1281 destroy_workqueue(netxen_workq
);
1284 module_exit(netxen_exit_module
);