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 u8 nx_p2_id
= NX_P2_C0
;
59 #define DMA_32BIT_MASK 0x00000000ffffffffULL
60 #define DMA_35BIT_MASK 0x00000007ffffffffULL
62 /* Local functions to NetXen NIC driver */
63 static int __devinit
netxen_nic_probe(struct pci_dev
*pdev
,
64 const struct pci_device_id
*ent
);
65 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
);
66 static int netxen_nic_open(struct net_device
*netdev
);
67 static int netxen_nic_close(struct net_device
*netdev
);
68 static int netxen_nic_xmit_frame(struct sk_buff
*, struct net_device
*);
69 static void netxen_tx_timeout(struct net_device
*netdev
);
70 static void netxen_tx_timeout_task(struct work_struct
*work
);
71 static void netxen_watchdog(unsigned long);
72 static int netxen_handle_int(struct netxen_adapter
*, struct net_device
*);
73 static int netxen_nic_poll(struct net_device
*dev
, int *budget
);
74 #ifdef CONFIG_NET_POLL_CONTROLLER
75 static void netxen_nic_poll_controller(struct net_device
*netdev
);
77 static irqreturn_t
netxen_intr(int irq
, void *data
);
79 int physical_port
[] = {0, 1, 2, 3};
81 /* PCI Device ID Table */
82 static struct pci_device_id netxen_pci_tbl
[] __devinitdata
= {
83 {PCI_DEVICE(0x4040, 0x0001)},
84 {PCI_DEVICE(0x4040, 0x0002)},
85 {PCI_DEVICE(0x4040, 0x0003)},
86 {PCI_DEVICE(0x4040, 0x0004)},
87 {PCI_DEVICE(0x4040, 0x0005)},
88 {PCI_DEVICE(0x4040, 0x0024)},
89 {PCI_DEVICE(0x4040, 0x0025)},
93 MODULE_DEVICE_TABLE(pci
, netxen_pci_tbl
);
95 struct workqueue_struct
*netxen_workq
;
96 static void netxen_watchdog(unsigned long);
98 static inline void netxen_nic_update_cmd_producer(struct netxen_adapter
*adapter
,
99 uint32_t crb_producer
)
101 switch (adapter
->portnum
) {
103 writel(crb_producer
, NETXEN_CRB_NORMALIZE
104 (adapter
, CRB_CMD_PRODUCER_OFFSET
));
107 writel(crb_producer
, NETXEN_CRB_NORMALIZE
108 (adapter
, CRB_CMD_PRODUCER_OFFSET_1
));
111 writel(crb_producer
, NETXEN_CRB_NORMALIZE
112 (adapter
, CRB_CMD_PRODUCER_OFFSET_2
));
115 writel(crb_producer
, NETXEN_CRB_NORMALIZE
116 (adapter
, CRB_CMD_PRODUCER_OFFSET_3
));
119 printk(KERN_WARNING
"We tried to update "
120 "CRB_CMD_PRODUCER_OFFSET for invalid "
121 "PCI function id %d\n",
127 static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter
*adapter
,
130 switch (adapter
->portnum
) {
132 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
133 (adapter
, CRB_CMD_CONSUMER_OFFSET
));
136 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
137 (adapter
, CRB_CMD_CONSUMER_OFFSET_1
));
140 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
141 (adapter
, CRB_CMD_CONSUMER_OFFSET_2
));
144 writel(crb_consumer
, NETXEN_CRB_NORMALIZE
145 (adapter
, CRB_CMD_CONSUMER_OFFSET_3
));
148 printk(KERN_WARNING
"We tried to update "
149 "CRB_CMD_PRODUCER_OFFSET for invalid "
150 "PCI function id %d\n",
156 #define ADAPTER_LIST_SIZE 12
157 int netxen_cards_found
;
162 * The Linux system will invoke this after identifying the vendor ID and
163 * device Id in the pci_tbl supported by this module.
165 * A quad port card has one operational PCI config space, (function 0),
166 * which is used to access all four ports.
168 * This routine will initialize the adapter, and setup the global parameters
169 * along with the port's specific structure.
172 netxen_nic_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
174 struct net_device
*netdev
= NULL
;
175 struct netxen_adapter
*adapter
= NULL
;
176 void __iomem
*mem_ptr0
= NULL
;
177 void __iomem
*mem_ptr1
= NULL
;
178 void __iomem
*mem_ptr2
= NULL
;
179 unsigned long first_page_group_end
;
180 unsigned long first_page_group_start
;
183 u8 __iomem
*db_ptr
= NULL
;
184 unsigned long mem_base
, mem_len
, db_base
, db_len
;
185 int pci_using_dac
, i
= 0, err
;
187 struct netxen_recv_context
*recv_ctx
= NULL
;
188 struct netxen_rcv_desc_ctx
*rcv_desc
= NULL
;
189 struct netxen_cmd_buffer
*cmd_buf_arr
= NULL
;
190 u64 mac_addr
[FLASH_NUM_PORTS
+ 1];
193 int pci_func_id
= PCI_FUNC(pdev
->devfn
);
195 printk(KERN_INFO
"%s \n", netxen_nic_driver_string
);
197 if (pdev
->class != 0x020000) {
198 printk(KERN_ERR
"NetXen function %d, class %x will not"
199 "be enabled.\n",pci_func_id
, pdev
->class);
202 if ((err
= pci_enable_device(pdev
)))
204 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
206 goto err_out_disable_pdev
;
209 if ((err
= pci_request_regions(pdev
, netxen_nic_driver_name
)))
210 goto err_out_disable_pdev
;
212 pci_set_master(pdev
);
213 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &nx_p2_id
);
214 if (nx_p2_id
== NX_P2_C1
&&
215 (pci_set_dma_mask(pdev
, DMA_35BIT_MASK
) == 0) &&
216 (pci_set_consistent_dma_mask(pdev
, DMA_35BIT_MASK
) == 0)) {
219 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) ||
220 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
)))
221 goto err_out_free_res
;
227 netdev
= alloc_etherdev(sizeof(struct netxen_adapter
));
229 printk(KERN_ERR
"%s: Failed to allocate memory for the "
230 "device block.Check system memory resource"
231 " usage.\n", netxen_nic_driver_name
);
232 goto err_out_free_res
;
235 SET_MODULE_OWNER(netdev
);
236 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
238 adapter
= netdev
->priv
;
239 memset(adapter
, 0 , sizeof(struct netxen_adapter
));
241 adapter
->ahw
.pdev
= pdev
;
242 adapter
->ahw
.pci_func
= pci_func_id
;
243 spin_lock_init(&adapter
->tx_lock
);
244 spin_lock_init(&adapter
->lock
);
246 /* remap phys address */
247 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
248 mem_len
= pci_resource_len(pdev
, 0);
250 /* 128 Meg of memory */
251 if (mem_len
== NETXEN_PCI_128MB_SIZE
) {
252 mem_ptr0
= ioremap(mem_base
, FIRST_PAGE_GROUP_SIZE
);
253 mem_ptr1
= ioremap(mem_base
+ SECOND_PAGE_GROUP_START
,
254 SECOND_PAGE_GROUP_SIZE
);
255 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
,
256 THIRD_PAGE_GROUP_SIZE
);
257 first_page_group_start
= FIRST_PAGE_GROUP_START
;
258 first_page_group_end
= FIRST_PAGE_GROUP_END
;
259 } else if (mem_len
== NETXEN_PCI_32MB_SIZE
) {
260 mem_ptr1
= ioremap(mem_base
, SECOND_PAGE_GROUP_SIZE
);
261 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
-
262 SECOND_PAGE_GROUP_START
, THIRD_PAGE_GROUP_SIZE
);
263 first_page_group_start
= 0;
264 first_page_group_end
= 0;
267 goto err_out_free_netdev
;
270 if (((mem_ptr0
== 0UL) && (mem_len
== NETXEN_PCI_128MB_SIZE
)) ||
271 (mem_ptr1
== 0UL) || (mem_ptr2
== 0UL)) {
273 "Cannot remap adapter memory aborting.:"
274 "0 -> %p, 1 -> %p, 2 -> %p\n",
275 mem_ptr0
, mem_ptr1
, mem_ptr2
);
278 goto err_out_iounmap
;
280 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
281 db_len
= pci_resource_len(pdev
, 4);
284 printk(KERN_ERR
"%s: doorbell is disabled\n",
285 netxen_nic_driver_name
);
287 goto err_out_iounmap
;
289 DPRINTK(INFO
, "doorbell ioremap from %lx a size of %lx\n", db_base
,
292 db_ptr
= ioremap(db_base
, NETXEN_DB_MAPSIZE_BYTES
);
294 printk(KERN_ERR
"%s: Failed to allocate doorbell map.",
295 netxen_nic_driver_name
);
297 goto err_out_iounmap
;
299 DPRINTK(INFO
, "doorbell ioremaped at %p\n", db_ptr
);
301 adapter
->ahw
.pci_base0
= mem_ptr0
;
302 adapter
->ahw
.first_page_group_start
= first_page_group_start
;
303 adapter
->ahw
.first_page_group_end
= first_page_group_end
;
304 adapter
->ahw
.pci_base1
= mem_ptr1
;
305 adapter
->ahw
.pci_base2
= mem_ptr2
;
306 adapter
->ahw
.db_base
= db_ptr
;
307 adapter
->ahw
.db_len
= db_len
;
309 adapter
->netdev
= netdev
;
310 adapter
->pdev
= pdev
;
312 /* this will be read from FW later */
313 adapter
->intr_scheme
= -1;
315 /* This will be reset for mezz cards */
316 adapter
->portnum
= pci_func_id
;
317 adapter
->status
&= ~NETXEN_NETDEV_STATUS
;
319 netdev
->open
= netxen_nic_open
;
320 netdev
->stop
= netxen_nic_close
;
321 netdev
->hard_start_xmit
= netxen_nic_xmit_frame
;
322 netdev
->get_stats
= netxen_nic_get_stats
;
323 netdev
->set_multicast_list
= netxen_nic_set_multi
;
324 netdev
->set_mac_address
= netxen_nic_set_mac
;
325 netdev
->change_mtu
= netxen_nic_change_mtu
;
326 netdev
->tx_timeout
= netxen_tx_timeout
;
327 netdev
->watchdog_timeo
= HZ
;
329 netxen_nic_change_mtu(netdev
, netdev
->mtu
);
331 SET_ETHTOOL_OPS(netdev
, &netxen_nic_ethtool_ops
);
332 netdev
->poll
= netxen_nic_poll
;
333 netdev
->weight
= NETXEN_NETDEV_WEIGHT
;
334 #ifdef CONFIG_NET_POLL_CONTROLLER
335 netdev
->poll_controller
= netxen_nic_poll_controller
;
337 /* ScatterGather support */
338 netdev
->features
= NETIF_F_SG
;
339 netdev
->features
|= NETIF_F_IP_CSUM
;
340 netdev
->features
|= NETIF_F_TSO
;
343 netdev
->features
|= NETIF_F_HIGHDMA
;
345 if (pci_enable_msi(pdev
))
346 adapter
->flags
&= ~NETXEN_NIC_MSI_ENABLED
;
348 adapter
->flags
|= NETXEN_NIC_MSI_ENABLED
;
350 netdev
->irq
= pdev
->irq
;
351 INIT_WORK(&adapter
->tx_timeout_task
, netxen_tx_timeout_task
);
354 * Set the CRB window to invalid. If any register in window 0 is
355 * accessed it should set the window to 0 and then reset it to 1.
357 adapter
->curr_window
= 255;
359 /* initialize the adapter */
360 netxen_initialize_adapter_hw(adapter
);
363 * Adapter in our case is quad port so initialize it before
364 * initializing the ports
367 netxen_initialize_adapter_ops(adapter
);
369 adapter
->max_tx_desc_count
= MAX_CMD_DESCRIPTORS_HOST
;
370 if ((adapter
->ahw
.boardcfg
.board_type
== NETXEN_BRDTYPE_P2_SB35_4G
) ||
371 (adapter
->ahw
.boardcfg
.board_type
==
372 NETXEN_BRDTYPE_P2_SB31_2G
))
373 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
375 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS
;
376 adapter
->max_jumbo_rx_desc_count
= MAX_JUMBO_RCV_DESCRIPTORS
;
377 adapter
->max_lro_rx_desc_count
= MAX_LRO_RCV_DESCRIPTORS
;
379 cmd_buf_arr
= (struct netxen_cmd_buffer
*)vmalloc(TX_RINGSIZE
);
380 if (cmd_buf_arr
== NULL
) {
382 "%s: Could not allocate cmd_buf_arr memory:%d\n",
383 netxen_nic_driver_name
, (int)TX_RINGSIZE
);
385 goto err_out_free_adapter
;
387 memset(cmd_buf_arr
, 0, TX_RINGSIZE
);
388 adapter
->cmd_buf_arr
= cmd_buf_arr
;
390 for (i
= 0; i
< MAX_RCV_CTX
; ++i
) {
391 recv_ctx
= &adapter
->recv_ctx
[i
];
392 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
393 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
394 switch (RCV_DESC_TYPE(ring
)) {
395 case RCV_DESC_NORMAL
:
396 rcv_desc
->max_rx_desc_count
=
397 adapter
->max_rx_desc_count
;
398 rcv_desc
->flags
= RCV_DESC_NORMAL
;
399 rcv_desc
->dma_size
= RX_DMA_MAP_LEN
;
400 rcv_desc
->skb_size
= MAX_RX_BUFFER_LENGTH
;
404 rcv_desc
->max_rx_desc_count
=
405 adapter
->max_jumbo_rx_desc_count
;
406 rcv_desc
->flags
= RCV_DESC_JUMBO
;
407 rcv_desc
->dma_size
= RX_JUMBO_DMA_MAP_LEN
;
408 rcv_desc
->skb_size
= MAX_RX_JUMBO_BUFFER_LENGTH
;
412 rcv_desc
->max_rx_desc_count
=
413 adapter
->max_lro_rx_desc_count
;
414 rcv_desc
->flags
= RCV_DESC_LRO
;
415 rcv_desc
->dma_size
= RX_LRO_DMA_MAP_LEN
;
416 rcv_desc
->skb_size
= MAX_RX_LRO_BUFFER_LENGTH
;
420 rcv_desc
->rx_buf_arr
= (struct netxen_rx_buffer
*)
421 vmalloc(RCV_BUFFSIZE
);
423 if (rcv_desc
->rx_buf_arr
== NULL
) {
424 printk(KERN_ERR
"%s: Could not allocate"
425 "rcv_desc->rx_buf_arr memory:%d\n",
426 netxen_nic_driver_name
,
429 goto err_out_free_rx_buffer
;
431 memset(rcv_desc
->rx_buf_arr
, 0, RCV_BUFFSIZE
);
436 netxen_initialize_adapter_sw(adapter
); /* initialize the buffers in adapter */
438 /* Mezz cards have PCI function 0,2,3 enabled */
439 if ((adapter
->ahw
.boardcfg
.board_type
== NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
)
440 && (pci_func_id
>= 2))
441 adapter
->portnum
= pci_func_id
- 2;
444 if(adapter
->portnum
== 0) {
445 netxen_pinit_from_rom(adapter
, 0);
447 netxen_load_firmware(adapter
);
451 init_timer(&adapter
->watchdog_timer
);
452 adapter
->ahw
.xg_linkup
= 0;
453 adapter
->watchdog_timer
.function
= &netxen_watchdog
;
454 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
455 INIT_WORK(&adapter
->watchdog_task
, netxen_watchdog_task
);
456 adapter
->ahw
.pdev
= pdev
;
457 adapter
->proc_cmd_buf_counter
= 0;
458 adapter
->ahw
.revision_id
= nx_p2_id
;
460 /* make sure Window == 1 */
461 netxen_nic_pci_change_crbwindow(adapter
, 1);
463 netxen_nic_update_cmd_producer(adapter
, 0);
464 netxen_nic_update_cmd_consumer(adapter
, 0);
465 writel(0, NETXEN_CRB_NORMALIZE(adapter
, CRB_HOST_CMD_ADDR_LO
));
467 if (netxen_is_flash_supported(adapter
) == 0 &&
468 netxen_get_flash_mac_addr(adapter
, mac_addr
) == 0)
474 unsigned char *p
= (unsigned char *)&mac_addr
[adapter
->portnum
];
475 netdev
->dev_addr
[0] = *(p
+ 5);
476 netdev
->dev_addr
[1] = *(p
+ 4);
477 netdev
->dev_addr
[2] = *(p
+ 3);
478 netdev
->dev_addr
[3] = *(p
+ 2);
479 netdev
->dev_addr
[4] = *(p
+ 1);
480 netdev
->dev_addr
[5] = *(p
+ 0);
482 memcpy(netdev
->perm_addr
, netdev
->dev_addr
,
484 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
485 printk(KERN_ERR
"%s: Bad MAC address "
486 "%02x:%02x:%02x:%02x:%02x:%02x.\n",
487 netxen_nic_driver_name
,
493 netdev
->dev_addr
[5]);
495 if (adapter
->macaddr_set
)
496 adapter
->macaddr_set(adapter
,
501 if (adapter
->portnum
== 0) {
502 err
= netxen_initialize_adapter_offload(adapter
);
504 goto err_out_free_rx_buffer
;
505 val
= readl(NETXEN_CRB_NORMALIZE(adapter
,
506 NETXEN_CAM_RAM(0x1fc)));
507 if (val
== 0x55555555) {
508 /* This is the first boot after power up */
509 netxen_nic_read_w0(adapter
, NETXEN_PCIE_REG(0x4), &val
);
512 netxen_nic_write_w0(adapter
, NETXEN_PCIE_REG(0x4), val
);
513 netxen_nic_read_w0(adapter
, NETXEN_PCIE_REG(0x4), &val
);
515 printk(KERN_ERR
"%s: failed to set MSI bit in PCI-e reg\n",
516 netxen_nic_driver_name
);
518 val
= readl(NETXEN_CRB_NORMALIZE(adapter
,
519 NETXEN_ROMUSB_GLB_SW_RESET
));
520 printk(KERN_INFO
"NetXen: read 0x%08x for reset reg.\n",val
);
521 if (val
!= 0x80000f) {
522 /* clear the register for future unloads/loads */
523 writel(0, NETXEN_CRB_NORMALIZE(adapter
,
524 NETXEN_CAM_RAM(0x1fc)));
525 printk(KERN_ERR
"ERROR in NetXen HW init sequence.\n");
527 goto err_out_free_dev
;
531 /* clear the register for future unloads/loads */
532 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
533 printk(KERN_INFO
"State: 0x%0x\n",
534 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
537 * Tell the hardware our version number.
539 i
= (_NETXEN_NIC_LINUX_MAJOR
<< 16)
540 | ((_NETXEN_NIC_LINUX_MINOR
<< 8))
541 | (_NETXEN_NIC_LINUX_SUBVERSION
);
542 writel(i
, NETXEN_CRB_NORMALIZE(adapter
, CRB_DRIVER_VERSION
));
544 /* Unlock the HW, prompting the boot sequence */
546 NETXEN_CRB_NORMALIZE(adapter
,
547 NETXEN_ROMUSB_GLB_PEGTUNE_DONE
));
548 /* Handshake with the card before we register the devices. */
549 netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
553 * See if the firmware gave us a virtual-physical port mapping.
555 i
= readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_V2P(adapter
->portnum
)));
557 physical_port
[adapter
->portnum
] = i
;
559 netif_carrier_off(netdev
);
560 netif_stop_queue(netdev
);
562 if ((err
= register_netdev(netdev
))) {
563 printk(KERN_ERR
"%s: register_netdev failed port #%d"
564 " aborting\n", netxen_nic_driver_name
,
567 goto err_out_free_dev
;
570 pci_set_drvdata(pdev
, adapter
);
572 switch (adapter
->ahw
.board_type
) {
574 printk(KERN_INFO
"%s: QUAD GbE board initialized\n",
575 netxen_nic_driver_name
);
578 case NETXEN_NIC_XGBE
:
579 printk(KERN_INFO
"%s: XGbE board initialized\n",
580 netxen_nic_driver_name
);
584 adapter
->driver_mismatch
= 0;
589 if (adapter
->portnum
== 0)
590 netxen_free_adapter_offload(adapter
);
592 err_out_free_rx_buffer
:
593 for (i
= 0; i
< MAX_RCV_CTX
; ++i
) {
594 recv_ctx
= &adapter
->recv_ctx
[i
];
595 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
596 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
597 if (rcv_desc
->rx_buf_arr
!= NULL
) {
598 vfree(rcv_desc
->rx_buf_arr
);
599 rcv_desc
->rx_buf_arr
= NULL
;
605 err_out_free_adapter
:
606 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
607 pci_disable_msi(pdev
);
609 pci_set_drvdata(pdev
, NULL
);
626 pci_release_regions(pdev
);
628 err_out_disable_pdev
:
629 pci_disable_device(pdev
);
633 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
)
635 struct netxen_adapter
*adapter
;
636 struct net_device
*netdev
;
637 struct netxen_rx_buffer
*buffer
;
638 struct netxen_recv_context
*recv_ctx
;
639 struct netxen_rcv_desc_ctx
*rcv_desc
;
641 static int init_firmware_done
= 0;
643 adapter
= pci_get_drvdata(pdev
);
647 netdev
= adapter
->netdev
;
649 unregister_netdev(netdev
);
651 if (adapter
->stop_port
)
652 adapter
->stop_port(adapter
);
654 netxen_nic_disable_int(adapter
);
657 free_irq(adapter
->irq
, adapter
);
659 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
660 init_firmware_done
++;
661 netxen_free_hw_resources(adapter
);
664 for (ctxid
= 0; ctxid
< MAX_RCV_CTX
; ++ctxid
) {
665 recv_ctx
= &adapter
->recv_ctx
[ctxid
];
666 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++) {
667 rcv_desc
= &recv_ctx
->rcv_desc
[ring
];
668 for (i
= 0; i
< rcv_desc
->max_rx_desc_count
; ++i
) {
669 buffer
= &(rcv_desc
->rx_buf_arr
[i
]);
670 if (buffer
->state
== NETXEN_BUFFER_FREE
)
672 pci_unmap_single(pdev
, buffer
->dma
,
675 if (buffer
->skb
!= NULL
)
676 dev_kfree_skb_any(buffer
->skb
);
678 vfree(rcv_desc
->rx_buf_arr
);
682 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
683 pci_disable_msi(pdev
);
685 vfree(adapter
->cmd_buf_arr
);
687 pci_disable_device(pdev
);
689 if (adapter
->portnum
== 0) {
690 if (init_firmware_done
) {
691 dma_watchdog_shutdown_request(adapter
);
694 while ((dma_watchdog_shutdown_poll_result(adapter
) != 1) && i
) {
695 printk(KERN_INFO
"dma_watchdog_shutdown_poll still in progress\n");
701 printk(KERN_ERR
"dma_watchdog_shutdown_request failed\n");
705 /* clear the register for future unloads/loads */
706 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
707 printk(KERN_INFO
"State: 0x%0x\n",
708 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
710 /* leave the hw in the same state as reboot */
711 writel(0, NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
));
712 if (netxen_pinit_from_rom(adapter
, 0))
715 if (netxen_load_firmware(adapter
))
717 netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
720 /* clear the register for future unloads/loads */
721 writel(0, NETXEN_CRB_NORMALIZE(adapter
, NETXEN_CAM_RAM(0x1fc)));
722 printk(KERN_INFO
"State: 0x%0x\n",
723 readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_CMDPEG_STATE
)));
725 dma_watchdog_shutdown_request(adapter
);
728 while ((dma_watchdog_shutdown_poll_result(adapter
) != 1) && i
) {
729 printk(KERN_INFO
"dma_watchdog_shutdown_poll still in progress\n");
735 netxen_free_adapter_offload(adapter
);
737 printk(KERN_ERR
"failed to dma shutdown\n");
743 iounmap(adapter
->ahw
.db_base
);
744 iounmap(adapter
->ahw
.pci_base0
);
745 iounmap(adapter
->ahw
.pci_base1
);
746 iounmap(adapter
->ahw
.pci_base2
);
748 pci_release_regions(pdev
);
749 pci_set_drvdata(pdev
, NULL
);
755 * Called when a network interface is made active
756 * @returns 0 on success, negative value on failure
758 static int netxen_nic_open(struct net_device
*netdev
)
760 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)netdev
->priv
;
764 if (adapter
->is_up
!= NETXEN_ADAPTER_UP_MAGIC
) {
765 err
= netxen_init_firmware(adapter
);
767 printk(KERN_ERR
"Failed to init firmware\n");
770 netxen_nic_flash_print(adapter
);
772 /* setup all the resources for the Phantom... */
773 /* this include the descriptors for rcv, tx, and status */
774 netxen_nic_clear_stats(adapter
);
775 err
= netxen_nic_hw_resources(adapter
);
777 printk(KERN_ERR
"Error in setting hw resources:%d\n",
781 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
782 for (ring
= 0; ring
< NUM_RCV_DESC_RINGS
; ring
++)
783 netxen_post_rx_buffers(adapter
, ctx
, ring
);
785 adapter
->irq
= adapter
->ahw
.pdev
->irq
;
786 err
= request_irq(adapter
->ahw
.pdev
->irq
, netxen_intr
,
787 IRQF_SHARED
|IRQF_SAMPLE_RANDOM
, netdev
->name
,
790 printk(KERN_ERR
"request_irq failed with: %d\n", err
);
791 netxen_free_hw_resources(adapter
);
795 adapter
->is_up
= NETXEN_ADAPTER_UP_MAGIC
;
797 if (!adapter
->driver_mismatch
)
798 mod_timer(&adapter
->watchdog_timer
, jiffies
);
800 netxen_nic_enable_int(adapter
);
802 /* Done here again so that even if phantom sw overwrote it,
804 if (adapter
->macaddr_set
)
805 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
806 if (adapter
->init_port
807 && adapter
->init_port(adapter
, adapter
->portnum
) != 0) {
808 del_timer_sync(&adapter
->watchdog_timer
);
809 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
810 netxen_nic_driver_name
, adapter
->portnum
);
814 netxen_nic_set_link_parameters(adapter
);
816 netxen_nic_set_multi(netdev
);
817 if (adapter
->set_mtu
)
818 adapter
->set_mtu(adapter
, netdev
->mtu
);
820 if (!adapter
->driver_mismatch
)
821 netif_start_queue(netdev
);
827 * netxen_nic_close - Disables a network interface entry point
829 static int netxen_nic_close(struct net_device
*netdev
)
831 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
833 struct netxen_cmd_buffer
*cmd_buff
;
834 struct netxen_skb_frag
*buffrag
;
836 netif_carrier_off(netdev
);
837 netif_stop_queue(netdev
);
839 cmd_buff
= adapter
->cmd_buf_arr
;
840 for (i
= 0; i
< adapter
->max_tx_desc_count
; i
++) {
841 buffrag
= cmd_buff
->frag_array
;
843 pci_unmap_single(adapter
->pdev
, buffrag
->dma
,
844 buffrag
->length
, PCI_DMA_TODEVICE
);
847 for (j
= 0; j
< cmd_buff
->frag_count
; j
++) {
850 pci_unmap_page(adapter
->pdev
, buffrag
->dma
,
856 /* Free the skb we received in netxen_nic_xmit_frame */
858 dev_kfree_skb_any(cmd_buff
->skb
);
859 cmd_buff
->skb
= NULL
;
863 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
864 FLUSH_SCHEDULED_WORK();
865 del_timer_sync(&adapter
->watchdog_timer
);
871 static int netxen_nic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
873 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
874 struct netxen_hardware_context
*hw
= &adapter
->ahw
;
875 unsigned int first_seg_len
= skb
->len
- skb
->data_len
;
876 struct netxen_skb_frag
*buffrag
;
880 u32 saved_producer
= 0;
881 struct cmd_desc_type0
*hwdesc
;
883 struct netxen_cmd_buffer
*pbuf
= NULL
;
884 static int dropped_packet
= 0;
886 u32 local_producer
= 0;
887 u32 max_tx_desc_count
= 0;
888 u32 last_cmd_consumer
= 0;
891 adapter
->stats
.xmitcalled
++;
892 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
894 if (unlikely(skb
->len
<= 0)) {
895 dev_kfree_skb_any(skb
);
896 adapter
->stats
.badskblen
++;
900 if (frag_count
> MAX_BUFFERS_PER_CMD
) {
901 printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)"
902 "too large, can handle only %d frags\n",
903 netxen_nic_driver_name
, netdev
->name
,
904 frag_count
, MAX_BUFFERS_PER_CMD
);
905 adapter
->stats
.txdropped
++;
906 if ((++dropped_packet
& 0xff) == 0xff)
907 printk("%s: %s droppped packets = %d\n",
908 netxen_nic_driver_name
, netdev
->name
,
915 * Everything is set up. Now, we just need to transmit it out.
916 * Note that we have to copy the contents of buffer over to
917 * right place. Later on, this can be optimized out by de-coupling the
918 * producer index from the buffer index.
920 retry_getting_window
:
921 spin_lock_bh(&adapter
->tx_lock
);
922 if (adapter
->total_threads
>= MAX_XMIT_PRODUCERS
) {
923 spin_unlock_bh(&adapter
->tx_lock
);
930 for (i
= 0; i
< 20; i
++)
931 cpu_relax(); /*This a nop instr on i386 */
933 goto retry_getting_window
;
935 local_producer
= adapter
->cmd_producer
;
936 /* There 4 fragments per descriptor */
937 no_of_desc
= (frag_count
+ 3) >> 2;
938 if (netdev
->features
& NETIF_F_TSO
) {
939 if (skb_shinfo(skb
)->gso_size
> 0) {
942 if ((ip_hdrlen(skb
) + tcp_hdrlen(skb
) +
943 sizeof(struct ethhdr
)) >
944 (sizeof(struct cmd_desc_type0
) - 2)) {
949 k
= adapter
->cmd_producer
;
950 max_tx_desc_count
= adapter
->max_tx_desc_count
;
951 last_cmd_consumer
= adapter
->last_cmd_consumer
;
952 if ((k
+ no_of_desc
) >=
953 ((last_cmd_consumer
<= k
) ? last_cmd_consumer
+ max_tx_desc_count
:
954 last_cmd_consumer
)) {
955 netif_stop_queue(netdev
);
956 adapter
->flags
|= NETXEN_NETDEV_STATUS
;
957 spin_unlock_bh(&adapter
->tx_lock
);
958 return NETDEV_TX_BUSY
;
960 k
= get_index_range(k
, max_tx_desc_count
, no_of_desc
);
961 adapter
->cmd_producer
= k
;
962 adapter
->total_threads
++;
963 adapter
->num_threads
++;
965 spin_unlock_bh(&adapter
->tx_lock
);
966 /* Copy the descriptors into the hardware */
967 producer
= local_producer
;
968 saved_producer
= producer
;
969 hwdesc
= &hw
->cmd_desc_head
[producer
];
970 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
971 /* Take skb->data itself */
972 pbuf
= &adapter
->cmd_buf_arr
[producer
];
973 if ((netdev
->features
& NETIF_F_TSO
) && skb_shinfo(skb
)->gso_size
> 0) {
974 pbuf
->mss
= skb_shinfo(skb
)->gso_size
;
975 hwdesc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
980 pbuf
->total_length
= skb
->len
;
982 pbuf
->cmd
= TX_ETHER_PKT
;
983 pbuf
->frag_count
= frag_count
;
984 pbuf
->port
= adapter
->portnum
;
985 buffrag
= &pbuf
->frag_array
[0];
986 buffrag
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, first_seg_len
,
988 buffrag
->length
= first_seg_len
;
989 netxen_set_cmd_desc_totallength(hwdesc
, skb
->len
);
990 netxen_set_cmd_desc_num_of_buff(hwdesc
, frag_count
);
991 netxen_set_cmd_desc_opcode(hwdesc
, TX_ETHER_PKT
);
993 netxen_set_cmd_desc_port(hwdesc
, adapter
->portnum
);
994 netxen_set_cmd_desc_ctxid(hwdesc
, adapter
->portnum
);
995 hwdesc
->buffer1_length
= cpu_to_le16(first_seg_len
);
996 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
998 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
999 struct skb_frag_struct
*frag
;
1001 unsigned long offset
;
1002 dma_addr_t temp_dma
;
1004 /* move to next desc. if there is a need */
1005 if ((i
& 0x3) == 0) {
1007 producer
= get_next_index(producer
,
1008 adapter
->max_tx_desc_count
);
1009 hwdesc
= &hw
->cmd_desc_head
[producer
];
1010 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1012 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1014 offset
= frag
->page_offset
;
1017 temp_dma
= pci_map_page(adapter
->pdev
, frag
->page
, offset
,
1018 len
, PCI_DMA_TODEVICE
);
1021 buffrag
->dma
= temp_dma
;
1022 buffrag
->length
= temp_len
;
1024 DPRINTK(INFO
, "for loop. i=%d k=%d\n", i
, k
);
1027 hwdesc
->buffer1_length
= cpu_to_le16(temp_len
);
1028 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1031 hwdesc
->buffer2_length
= cpu_to_le16(temp_len
);
1032 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1035 hwdesc
->buffer3_length
= cpu_to_le16(temp_len
);
1036 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1039 hwdesc
->buffer4_length
= cpu_to_le16(temp_len
);
1040 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1045 producer
= get_next_index(producer
, adapter
->max_tx_desc_count
);
1047 /* might change opcode to TX_TCP_LSO */
1048 netxen_tso_check(adapter
, &hw
->cmd_desc_head
[saved_producer
], skb
);
1050 /* For LSO, we need to copy the MAC/IP/TCP headers into
1051 * the descriptor ring
1053 if (netxen_get_cmd_desc_opcode(&hw
->cmd_desc_head
[saved_producer
])
1055 int hdr_len
, first_hdr_len
, more_hdr
;
1056 hdr_len
= hw
->cmd_desc_head
[saved_producer
].total_hdr_length
;
1057 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1058 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1061 first_hdr_len
= hdr_len
;
1064 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1065 hwdesc
= &hw
->cmd_desc_head
[producer
];
1067 /* copy the first 64 bytes */
1068 memcpy(((void *)hwdesc
) + 2,
1069 (void *)(skb
->data
), first_hdr_len
);
1070 producer
= get_next_index(producer
, max_tx_desc_count
);
1073 hwdesc
= &hw
->cmd_desc_head
[producer
];
1074 /* copy the next 64 bytes - should be enough except
1075 * for pathological case
1077 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1081 producer
= get_next_index(producer
, max_tx_desc_count
);
1085 i
= netxen_get_cmd_desc_totallength(&hw
->cmd_desc_head
[saved_producer
]);
1087 hw
->cmd_desc_head
[saved_producer
].flags_opcode
=
1088 cpu_to_le16(hw
->cmd_desc_head
[saved_producer
].flags_opcode
);
1089 hw
->cmd_desc_head
[saved_producer
].num_of_buffers_total_length
=
1090 cpu_to_le32(hw
->cmd_desc_head
[saved_producer
].
1091 num_of_buffers_total_length
);
1093 spin_lock_bh(&adapter
->tx_lock
);
1094 adapter
->stats
.txbytes
+= i
;
1096 /* Code to update the adapter considering how many producer threads
1097 are currently working */
1098 if ((--adapter
->num_threads
) == 0) {
1099 /* This is the last thread */
1100 u32 crb_producer
= adapter
->cmd_producer
;
1101 netxen_nic_update_cmd_producer(adapter
, crb_producer
);
1103 adapter
->total_threads
= 0;
1106 adapter
->stats
.xmitfinished
++;
1107 spin_unlock_bh(&adapter
->tx_lock
);
1109 netdev
->trans_start
= jiffies
;
1111 DPRINTK(INFO
, "wrote CMD producer %x to phantom\n", producer
);
1113 DPRINTK(INFO
, "Done. Send\n");
1114 return NETDEV_TX_OK
;
1117 static void netxen_watchdog(unsigned long v
)
1119 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1121 SCHEDULE_WORK(&adapter
->watchdog_task
);
1124 static void netxen_tx_timeout(struct net_device
*netdev
)
1126 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1127 netdev_priv(netdev
);
1128 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1131 static void netxen_tx_timeout_task(struct work_struct
*work
)
1133 struct netxen_adapter
*adapter
=
1134 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1135 unsigned long flags
;
1137 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1138 netxen_nic_driver_name
, adapter
->netdev
->name
);
1140 spin_lock_irqsave(&adapter
->lock
, flags
);
1141 netxen_nic_close(adapter
->netdev
);
1142 netxen_nic_open(adapter
->netdev
);
1143 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1144 adapter
->netdev
->trans_start
= jiffies
;
1145 netif_wake_queue(adapter
->netdev
);
1149 netxen_handle_int(struct netxen_adapter
*adapter
, struct net_device
*netdev
)
1154 DPRINTK(INFO
, "Entered handle ISR\n");
1155 adapter
->stats
.ints
++;
1157 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
1158 our_int
= readl(NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1159 /* not our interrupt */
1160 if ((our_int
& (0x80 << adapter
->portnum
)) == 0)
1164 netxen_nic_disable_int(adapter
);
1166 if (adapter
->intr_scheme
== INTR_SCHEME_PERPORT
) {
1167 /* claim interrupt */
1168 if (!(adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)) {
1169 writel(our_int
& ~((u32
)(0x80 << adapter
->portnum
)),
1170 NETXEN_CRB_NORMALIZE(adapter
, CRB_INT_VECTOR
));
1174 if (netxen_nic_rx_has_work(adapter
) || netxen_nic_tx_has_work(adapter
)) {
1175 if (netif_rx_schedule_prep(netdev
)) {
1177 * Interrupts are already disabled.
1179 __netif_rx_schedule(netdev
);
1181 static unsigned int intcount
= 0;
1182 if ((++intcount
& 0xfff) == 0xfff)
1184 "%s: %s interrupt %d while in poll\n",
1185 netxen_nic_driver_name
, netdev
->name
,
1192 netxen_nic_enable_int(adapter
);
1199 * netxen_intr - Interrupt Handler
1200 * @irq: interrupt number
1201 * data points to adapter stucture (which may be handling more than 1 port
1203 irqreturn_t
netxen_intr(int irq
, void *data
)
1205 struct netxen_adapter
*adapter
;
1206 struct net_device
*netdev
;
1208 if (unlikely(!irq
)) {
1209 return IRQ_NONE
; /* Not our interrupt */
1212 adapter
= (struct netxen_adapter
*)data
;
1213 netdev
= adapter
->netdev
;
1214 /* process our status queue (for all 4 ports) */
1215 if (netif_running(netdev
))
1216 netxen_handle_int(adapter
, netdev
);
1221 static int netxen_nic_poll(struct net_device
*netdev
, int *budget
)
1223 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1224 int work_to_do
= min(*budget
, netdev
->quota
);
1230 DPRINTK(INFO
, "polling for %d descriptors\n", *budget
);
1233 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1235 * Fairness issue. This will give undue weight to the
1236 * receive context 0.
1240 * To avoid starvation, we give each of our receivers,
1241 * a fraction of the quota. Sometimes, it might happen that we
1242 * have enough quota to process every packet, but since all the
1243 * packets are on one context, it gets only half of the quota,
1244 * and ends up not processing it.
1246 this_work_done
= netxen_process_rcv_ring(adapter
, ctx
,
1249 work_done
+= this_work_done
;
1252 netdev
->quota
-= work_done
;
1253 *budget
-= work_done
;
1255 if (work_done
>= work_to_do
&& netxen_nic_rx_has_work(adapter
) != 0)
1258 if (netxen_process_cmd_ring((unsigned long)adapter
) == 0)
1261 DPRINTK(INFO
, "new work_done: %d work_to_do: %d\n",
1262 work_done
, work_to_do
);
1264 netif_rx_complete(netdev
);
1265 netxen_nic_enable_int(adapter
);
1271 #ifdef CONFIG_NET_POLL_CONTROLLER
1272 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1274 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1275 disable_irq(adapter
->irq
);
1276 netxen_intr(adapter
->irq
, adapter
);
1277 enable_irq(adapter
->irq
);
1281 static struct pci_driver netxen_driver
= {
1282 .name
= netxen_nic_driver_name
,
1283 .id_table
= netxen_pci_tbl
,
1284 .probe
= netxen_nic_probe
,
1285 .remove
= __devexit_p(netxen_nic_remove
)
1288 /* Driver Registration on NetXen card */
1290 static int __init
netxen_init_module(void)
1292 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == 0)
1295 return pci_register_driver(&netxen_driver
);
1298 module_init(netxen_init_module
);
1300 static void __exit
netxen_exit_module(void)
1303 * Wait for some time to allow the dma to drain, if any.
1306 pci_unregister_driver(&netxen_driver
);
1307 destroy_workqueue(netxen_workq
);
1310 module_exit(netxen_exit_module
);