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 static int port_mode
= NETXEN_PORT_MODE_AUTO_NEG
;
54 /* Default to restricted 1G auto-neg mode */
55 static int wol_port_mode
= 5;
57 static int use_msi
= 1;
59 static int use_msi_x
= 1;
61 /* Local functions to NetXen NIC driver */
62 static int __devinit
netxen_nic_probe(struct pci_dev
*pdev
,
63 const struct pci_device_id
*ent
);
64 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
);
65 static int netxen_nic_open(struct net_device
*netdev
);
66 static int netxen_nic_close(struct net_device
*netdev
);
67 static int netxen_nic_xmit_frame(struct sk_buff
*, struct net_device
*);
68 static void netxen_tx_timeout(struct net_device
*netdev
);
69 static void netxen_tx_timeout_task(struct work_struct
*work
);
70 static void netxen_watchdog(unsigned long);
71 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
);
72 #ifdef CONFIG_NET_POLL_CONTROLLER
73 static void netxen_nic_poll_controller(struct net_device
*netdev
);
75 static irqreturn_t
netxen_intr(int irq
, void *data
);
76 static irqreturn_t
netxen_msi_intr(int irq
, void *data
);
78 /* PCI Device ID Table */
79 #define ENTRY(device) \
80 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
81 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
83 static struct pci_device_id netxen_pci_tbl
[] __devinitdata
= {
84 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR
),
85 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4
),
86 ENTRY(PCI_DEVICE_ID_NX2031_4GCU
),
87 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ
),
88 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ
),
89 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT
),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2
),
91 ENTRY(PCI_DEVICE_ID_NX3031
),
95 MODULE_DEVICE_TABLE(pci
, netxen_pci_tbl
);
98 * In netxen_nic_down(), we must wait for any pending callback requests into
99 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
100 * reenabled right after it is deleted in netxen_nic_down().
101 * FLUSH_SCHEDULED_WORK() does this synchronization.
103 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
104 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
105 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
106 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
107 * linkwatch_event() to be executed which also attempts to acquire the rtnl
108 * lock thus causing a deadlock.
111 static struct workqueue_struct
*netxen_workq
;
112 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
113 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
115 static void netxen_watchdog(unsigned long);
117 static uint32_t crb_cmd_producer
[4] = {
118 CRB_CMD_PRODUCER_OFFSET
, CRB_CMD_PRODUCER_OFFSET_1
,
119 CRB_CMD_PRODUCER_OFFSET_2
, CRB_CMD_PRODUCER_OFFSET_3
123 netxen_nic_update_cmd_producer(struct netxen_adapter
*adapter
,
124 uint32_t crb_producer
)
126 adapter
->pci_write_normalize(adapter
,
127 adapter
->crb_addr_cmd_producer
, crb_producer
);
130 static uint32_t crb_cmd_consumer
[4] = {
131 CRB_CMD_CONSUMER_OFFSET
, CRB_CMD_CONSUMER_OFFSET_1
,
132 CRB_CMD_CONSUMER_OFFSET_2
, CRB_CMD_CONSUMER_OFFSET_3
136 netxen_nic_update_cmd_consumer(struct netxen_adapter
*adapter
,
139 adapter
->pci_write_normalize(adapter
,
140 adapter
->crb_addr_cmd_consumer
, crb_consumer
);
143 static uint32_t msi_tgt_status
[8] = {
144 ISR_INT_TARGET_STATUS
, ISR_INT_TARGET_STATUS_F1
,
145 ISR_INT_TARGET_STATUS_F2
, ISR_INT_TARGET_STATUS_F3
,
146 ISR_INT_TARGET_STATUS_F4
, ISR_INT_TARGET_STATUS_F5
,
147 ISR_INT_TARGET_STATUS_F6
, ISR_INT_TARGET_STATUS_F7
150 static struct netxen_legacy_intr_set legacy_intr
[] = NX_LEGACY_INTR_CONFIG
;
152 static inline void netxen_nic_disable_int(struct netxen_adapter
*adapter
)
154 adapter
->pci_write_normalize(adapter
, adapter
->crb_intr_mask
, 0);
157 static inline void netxen_nic_enable_int(struct netxen_adapter
*adapter
)
159 adapter
->pci_write_normalize(adapter
, adapter
->crb_intr_mask
, 0x1);
161 if (!NETXEN_IS_MSI_FAMILY(adapter
))
162 adapter
->pci_write_immediate(adapter
,
163 adapter
->legacy_intr
.tgt_mask_reg
, 0xfbff);
166 static int nx_set_dma_mask(struct netxen_adapter
*adapter
, uint8_t revision_id
)
168 struct pci_dev
*pdev
= adapter
->pdev
;
173 adapter
->dma_mask
= DMA_32BIT_MASK
;
175 if (revision_id
>= NX_P3_B0
) {
176 /* should go to DMA_64BIT_MASK */
177 adapter
->dma_mask
= DMA_39BIT_MASK
;
178 mask
= DMA_39BIT_MASK
;
179 } else if (revision_id
== NX_P3_A2
) {
180 adapter
->dma_mask
= DMA_39BIT_MASK
;
181 mask
= DMA_39BIT_MASK
;
182 } else if (revision_id
== NX_P2_C1
) {
183 adapter
->dma_mask
= DMA_35BIT_MASK
;
184 mask
= DMA_35BIT_MASK
;
186 adapter
->dma_mask
= DMA_32BIT_MASK
;
187 mask
= DMA_32BIT_MASK
;
188 goto set_32_bit_mask
;
192 * Consistent DMA mask is set to 32 bit because it cannot be set to
193 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
194 * come off this pool.
196 if (pci_set_dma_mask(pdev
, mask
) == 0 &&
197 pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
) == 0) {
198 adapter
->pci_using_dac
= 1;
201 #endif /* CONFIG_IA64 */
204 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
206 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
208 DPRINTK(ERR
, "No usable DMA configuration, aborting:%d\n", err
);
212 adapter
->pci_using_dac
= 0;
216 static void netxen_check_options(struct netxen_adapter
*adapter
)
218 switch (adapter
->ahw
.boardcfg
.board_type
) {
219 case NETXEN_BRDTYPE_P3_HMEZ
:
220 case NETXEN_BRDTYPE_P3_XG_LOM
:
221 case NETXEN_BRDTYPE_P3_10G_CX4
:
222 case NETXEN_BRDTYPE_P3_10G_CX4_LP
:
223 case NETXEN_BRDTYPE_P3_IMEZ
:
224 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS
:
225 case NETXEN_BRDTYPE_P3_10G_SFP_QT
:
226 case NETXEN_BRDTYPE_P3_10G_SFP_CT
:
227 case NETXEN_BRDTYPE_P3_10G_XFP
:
228 case NETXEN_BRDTYPE_P3_10000_BASE_T
:
229 adapter
->msix_supported
= !!use_msi_x
;
230 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_10G
;
233 case NETXEN_BRDTYPE_P2_SB31_10G
:
234 case NETXEN_BRDTYPE_P2_SB31_10G_CX4
:
235 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
236 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
237 adapter
->msix_supported
= 0;
238 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_10G
;
241 case NETXEN_BRDTYPE_P3_REF_QG
:
242 case NETXEN_BRDTYPE_P3_4_GB
:
243 case NETXEN_BRDTYPE_P3_4_GB_MM
:
244 adapter
->msix_supported
= !!use_msi_x
;
245 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_10G
;
248 case NETXEN_BRDTYPE_P2_SB35_4G
:
249 case NETXEN_BRDTYPE_P2_SB31_2G
:
250 adapter
->msix_supported
= 0;
251 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
255 adapter
->msix_supported
= 0;
256 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
258 printk(KERN_WARNING
"Unknown board type(0x%x)\n",
259 adapter
->ahw
.boardcfg
.board_type
);
263 adapter
->max_tx_desc_count
= MAX_CMD_DESCRIPTORS_HOST
;
264 adapter
->max_jumbo_rx_desc_count
= MAX_JUMBO_RCV_DESCRIPTORS
;
265 adapter
->max_lro_rx_desc_count
= MAX_LRO_RCV_DESCRIPTORS
;
267 adapter
->max_possible_rss_rings
= 1;
272 netxen_check_hw_init(struct netxen_adapter
*adapter
, int first_boot
)
276 if (first_boot
== 0x55555555) {
277 /* This is the first boot after power up */
279 /* PCI bus master workaround */
280 adapter
->hw_read_wx(adapter
,
281 NETXEN_PCIE_REG(0x4), &first_boot
, 4);
282 if (!(first_boot
& 0x4)) {
284 adapter
->hw_write_wx(adapter
,
285 NETXEN_PCIE_REG(0x4), &first_boot
, 4);
286 adapter
->hw_read_wx(adapter
,
287 NETXEN_PCIE_REG(0x4), &first_boot
, 4);
290 /* This is the first boot after power up */
291 adapter
->hw_read_wx(adapter
,
292 NETXEN_ROMUSB_GLB_SW_RESET
, &first_boot
, 4);
293 if (first_boot
!= 0x80000f) {
294 /* clear the register for future unloads/loads */
295 adapter
->pci_write_normalize(adapter
,
296 NETXEN_CAM_RAM(0x1fc), 0);
300 if (NX_IS_REVISION_P2(adapter
->ahw
.revision_id
)) {
301 /* Start P2 boot loader */
302 adapter
->pci_write_normalize(adapter
,
303 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC
);
304 adapter
->pci_write_normalize(adapter
,
305 NETXEN_ROMUSB_GLB_PEGTUNE_DONE
, 1);
311 static void netxen_set_port_mode(struct netxen_adapter
*adapter
)
315 val
= adapter
->ahw
.boardcfg
.board_type
;
316 if ((val
== NETXEN_BRDTYPE_P3_HMEZ
) ||
317 (val
== NETXEN_BRDTYPE_P3_XG_LOM
)) {
318 if (port_mode
== NETXEN_PORT_MODE_802_3_AP
) {
319 data
= NETXEN_PORT_MODE_802_3_AP
;
320 adapter
->hw_write_wx(adapter
,
321 NETXEN_PORT_MODE_ADDR
, &data
, 4);
322 } else if (port_mode
== NETXEN_PORT_MODE_XG
) {
323 data
= NETXEN_PORT_MODE_XG
;
324 adapter
->hw_write_wx(adapter
,
325 NETXEN_PORT_MODE_ADDR
, &data
, 4);
326 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_1G
) {
327 data
= NETXEN_PORT_MODE_AUTO_NEG_1G
;
328 adapter
->hw_write_wx(adapter
,
329 NETXEN_PORT_MODE_ADDR
, &data
, 4);
330 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_XG
) {
331 data
= NETXEN_PORT_MODE_AUTO_NEG_XG
;
332 adapter
->hw_write_wx(adapter
,
333 NETXEN_PORT_MODE_ADDR
, &data
, 4);
335 data
= NETXEN_PORT_MODE_AUTO_NEG
;
336 adapter
->hw_write_wx(adapter
,
337 NETXEN_PORT_MODE_ADDR
, &data
, 4);
340 if ((wol_port_mode
!= NETXEN_PORT_MODE_802_3_AP
) &&
341 (wol_port_mode
!= NETXEN_PORT_MODE_XG
) &&
342 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_1G
) &&
343 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_XG
)) {
344 wol_port_mode
= NETXEN_PORT_MODE_AUTO_NEG
;
346 adapter
->hw_write_wx(adapter
, NETXEN_WOL_PORT_MODE
,
351 #define PCI_CAP_ID_GEN 0x10
353 static void netxen_pcie_strap_init(struct netxen_adapter
*adapter
)
360 struct pci_dev
*pdev
;
362 pdev
= adapter
->pdev
;
364 adapter
->hw_read_wx(adapter
,
365 NETXEN_PCIE_REG(PCIE_CHICKEN3
), &chicken
, 4);
366 /* clear chicken3.25:24 */
367 chicken
&= 0xFCFFFFFF;
369 * if gen1 and B0, set F1020 - if gen 2, do nothing
370 * if gen2 set to F1000
372 pos
= pci_find_capability(pdev
, PCI_CAP_ID_GEN
);
374 pci_read_config_dword(pdev
, pos
+ 0x10, &control
);
375 if ((control
& 0x000F0000) != 0x00020000) {
376 /* set chicken3.24 if gen1 */
377 chicken
|= 0x01000000;
379 printk(KERN_INFO
"%s Gen2 strapping detected\n",
380 netxen_nic_driver_name
);
383 /* set chicken3.24 if gen1 */
384 chicken
|= 0x01000000;
385 printk(KERN_INFO
"%s Gen1 strapping detected\n",
386 netxen_nic_driver_name
);
387 if (adapter
->ahw
.revision_id
== NX_P3_B0
)
393 adapter
->hw_write_wx(adapter
,
394 NETXEN_PCIE_REG(PCIE_CHICKEN3
), &chicken
, 4);
399 pdevfuncsave
= pdev
->devfn
;
400 if (pdevfuncsave
& 0x07)
403 for (i
= 0; i
< 8; i
++) {
404 pci_read_config_dword(pdev
, pos
+ 8, &control
);
405 pci_read_config_dword(pdev
, pos
+ 8, &control
);
406 pci_write_config_dword(pdev
, pos
+ 8, c8c9value
);
409 pdev
->devfn
= pdevfuncsave
;
412 static void netxen_set_msix_bit(struct pci_dev
*pdev
, int enable
)
417 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSIX
);
419 pci_read_config_dword(pdev
, pos
, &control
);
421 control
|= PCI_MSIX_FLAGS_ENABLE
;
424 pci_write_config_dword(pdev
, pos
, control
);
428 static void netxen_init_msix_entries(struct netxen_adapter
*adapter
)
432 for (i
= 0; i
< MSIX_ENTRIES_PER_ADAPTER
; i
++)
433 adapter
->msix_entries
[i
].entry
= i
;
437 netxen_read_mac_addr(struct netxen_adapter
*adapter
)
442 struct net_device
*netdev
= adapter
->netdev
;
443 struct pci_dev
*pdev
= adapter
->pdev
;
445 if (netxen_is_flash_supported(adapter
) != 0)
448 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
449 if (netxen_p3_get_mac_addr(adapter
, &mac_addr
) != 0)
452 if (netxen_get_flash_mac_addr(adapter
, &mac_addr
) != 0)
456 p
= (unsigned char *)&mac_addr
;
457 for (i
= 0; i
< 6; i
++)
458 netdev
->dev_addr
[i
] = *(p
+ 5 - i
);
460 memcpy(netdev
->perm_addr
, netdev
->dev_addr
, netdev
->addr_len
);
462 /* set station address */
464 if (!is_valid_ether_addr(netdev
->perm_addr
))
465 dev_warn(&pdev
->dev
, "Bad MAC address %pM.\n", netdev
->dev_addr
);
467 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
475 * The Linux system will invoke this after identifying the vendor ID and
476 * device Id in the pci_tbl supported by this module.
478 * A quad port card has one operational PCI config space, (function 0),
479 * which is used to access all four ports.
481 * This routine will initialize the adapter, and setup the global parameters
482 * along with the port's specific structure.
485 netxen_nic_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
487 struct net_device
*netdev
= NULL
;
488 struct netxen_adapter
*adapter
= NULL
;
489 void __iomem
*mem_ptr0
= NULL
;
490 void __iomem
*mem_ptr1
= NULL
;
491 void __iomem
*mem_ptr2
= NULL
;
492 unsigned long first_page_group_end
;
493 unsigned long first_page_group_start
;
496 u8 __iomem
*db_ptr
= NULL
;
497 unsigned long mem_base
, mem_len
, db_base
, db_len
, pci_len0
= 0;
499 int first_driver
, first_boot
;
501 int pci_func_id
= PCI_FUNC(pdev
->devfn
);
502 struct netxen_legacy_intr_set
*legacy_intrp
;
505 if (pci_func_id
== 0)
506 printk(KERN_INFO
"%s\n", netxen_nic_driver_string
);
508 if (pdev
->class != 0x020000) {
509 printk(KERN_DEBUG
"NetXen function %d, class %x will not "
510 "be enabled.\n",pci_func_id
, pdev
->class);
514 if (pdev
->revision
>= NX_P3_A0
&& pdev
->revision
< NX_P3_B1
) {
515 printk(KERN_WARNING
"NetXen chip revisions between 0x%x-0x%x"
516 "will not be enabled.\n",
521 if ((err
= pci_enable_device(pdev
)))
524 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
526 goto err_out_disable_pdev
;
529 if ((err
= pci_request_regions(pdev
, netxen_nic_driver_name
)))
530 goto err_out_disable_pdev
;
532 pci_set_master(pdev
);
534 netdev
= alloc_etherdev(sizeof(struct netxen_adapter
));
536 printk(KERN_ERR
"%s: Failed to allocate memory for the "
537 "device block.Check system memory resource"
538 " usage.\n", netxen_nic_driver_name
);
539 goto err_out_free_res
;
542 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
544 adapter
= netdev_priv(netdev
);
545 adapter
->netdev
= netdev
;
546 adapter
->pdev
= pdev
;
547 adapter
->ahw
.pci_func
= pci_func_id
;
549 revision_id
= pdev
->revision
;
550 adapter
->ahw
.revision_id
= revision_id
;
552 err
= nx_set_dma_mask(adapter
, revision_id
);
554 goto err_out_free_netdev
;
556 rwlock_init(&adapter
->adapter_lock
);
557 adapter
->ahw
.qdr_sn_window
= -1;
558 adapter
->ahw
.ddr_mn_window
= -1;
560 /* remap phys address */
561 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
562 mem_len
= pci_resource_len(pdev
, 0);
565 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_128M
;
566 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_128M
;
567 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_128M
;
568 adapter
->pci_write_immediate
= netxen_nic_pci_write_immediate_128M
;
569 adapter
->pci_read_normalize
= netxen_nic_pci_read_normalize_128M
;
570 adapter
->pci_write_normalize
= netxen_nic_pci_write_normalize_128M
;
571 adapter
->pci_set_window
= netxen_nic_pci_set_window_128M
;
572 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_128M
;
573 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_128M
;
575 /* 128 Meg of memory */
576 if (mem_len
== NETXEN_PCI_128MB_SIZE
) {
577 mem_ptr0
= ioremap(mem_base
, FIRST_PAGE_GROUP_SIZE
);
578 mem_ptr1
= ioremap(mem_base
+ SECOND_PAGE_GROUP_START
,
579 SECOND_PAGE_GROUP_SIZE
);
580 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
,
581 THIRD_PAGE_GROUP_SIZE
);
582 first_page_group_start
= FIRST_PAGE_GROUP_START
;
583 first_page_group_end
= FIRST_PAGE_GROUP_END
;
584 } else if (mem_len
== NETXEN_PCI_32MB_SIZE
) {
585 mem_ptr1
= ioremap(mem_base
, SECOND_PAGE_GROUP_SIZE
);
586 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
-
587 SECOND_PAGE_GROUP_START
, THIRD_PAGE_GROUP_SIZE
);
588 first_page_group_start
= 0;
589 first_page_group_end
= 0;
590 } else if (mem_len
== NETXEN_PCI_2MB_SIZE
) {
591 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_2M
;
592 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_2M
;
593 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_2M
;
594 adapter
->pci_write_immediate
=
595 netxen_nic_pci_write_immediate_2M
;
596 adapter
->pci_read_normalize
= netxen_nic_pci_read_normalize_2M
;
597 adapter
->pci_write_normalize
=
598 netxen_nic_pci_write_normalize_2M
;
599 adapter
->pci_set_window
= netxen_nic_pci_set_window_2M
;
600 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_2M
;
601 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_2M
;
603 mem_ptr0
= ioremap(mem_base
, mem_len
);
605 first_page_group_start
= 0;
606 first_page_group_end
= 0;
608 adapter
->ahw
.ddr_mn_window
= 0;
609 adapter
->ahw
.qdr_sn_window
= 0;
611 adapter
->ahw
.mn_win_crb
= 0x100000 + PCIX_MN_WINDOW
+
612 (pci_func_id
* 0x20);
613 adapter
->ahw
.ms_win_crb
= 0x100000 + PCIX_SN_WINDOW
;
615 adapter
->ahw
.ms_win_crb
+= (pci_func_id
* 0x20);
617 adapter
->ahw
.ms_win_crb
+=
618 0xA0 + ((pci_func_id
- 4) * 0x10);
621 goto err_out_free_netdev
;
624 dev_info(&pdev
->dev
, "%dMB memory map\n", (int)(mem_len
>>20));
626 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
627 db_len
= pci_resource_len(pdev
, 4);
630 printk(KERN_ERR
"%s: doorbell is disabled\n",
631 netxen_nic_driver_name
);
633 goto err_out_iounmap
;
635 DPRINTK(INFO
, "doorbell ioremap from %lx a size of %lx\n", db_base
,
638 db_ptr
= ioremap(db_base
, NETXEN_DB_MAPSIZE_BYTES
);
640 printk(KERN_ERR
"%s: Failed to allocate doorbell map.",
641 netxen_nic_driver_name
);
643 goto err_out_iounmap
;
645 DPRINTK(INFO
, "doorbell ioremaped at %p\n", db_ptr
);
647 adapter
->ahw
.pci_base0
= mem_ptr0
;
648 adapter
->ahw
.pci_len0
= pci_len0
;
649 adapter
->ahw
.first_page_group_start
= first_page_group_start
;
650 adapter
->ahw
.first_page_group_end
= first_page_group_end
;
651 adapter
->ahw
.pci_base1
= mem_ptr1
;
652 adapter
->ahw
.pci_base2
= mem_ptr2
;
653 adapter
->ahw
.db_base
= db_ptr
;
654 adapter
->ahw
.db_len
= db_len
;
656 netif_napi_add(netdev
, &adapter
->napi
,
657 netxen_nic_poll
, NETXEN_NETDEV_WEIGHT
);
659 if (revision_id
>= NX_P3_B0
)
660 legacy_intrp
= &legacy_intr
[pci_func_id
];
662 legacy_intrp
= &legacy_intr
[0];
664 adapter
->legacy_intr
.int_vec_bit
= legacy_intrp
->int_vec_bit
;
665 adapter
->legacy_intr
.tgt_status_reg
= legacy_intrp
->tgt_status_reg
;
666 adapter
->legacy_intr
.tgt_mask_reg
= legacy_intrp
->tgt_mask_reg
;
667 adapter
->legacy_intr
.pci_int_reg
= legacy_intrp
->pci_int_reg
;
669 /* this will be read from FW later */
670 adapter
->intr_scheme
= -1;
671 adapter
->msi_mode
= -1;
673 /* This will be reset for mezz cards */
674 adapter
->portnum
= pci_func_id
;
675 adapter
->status
&= ~NETXEN_NETDEV_STATUS
;
676 adapter
->rx_csum
= 1;
677 adapter
->mc_enabled
= 0;
678 if (NX_IS_REVISION_P3(revision_id
))
679 adapter
->max_mc_count
= 38;
681 adapter
->max_mc_count
= 16;
683 netdev
->open
= netxen_nic_open
;
684 netdev
->stop
= netxen_nic_close
;
685 netdev
->hard_start_xmit
= netxen_nic_xmit_frame
;
686 netdev
->get_stats
= netxen_nic_get_stats
;
687 if (NX_IS_REVISION_P3(revision_id
))
688 netdev
->set_multicast_list
= netxen_p3_nic_set_multi
;
690 netdev
->set_multicast_list
= netxen_p2_nic_set_multi
;
691 netdev
->set_mac_address
= netxen_nic_set_mac
;
692 netdev
->change_mtu
= netxen_nic_change_mtu
;
693 netdev
->tx_timeout
= netxen_tx_timeout
;
694 netdev
->watchdog_timeo
= 2*HZ
;
696 netxen_nic_change_mtu(netdev
, netdev
->mtu
);
698 SET_ETHTOOL_OPS(netdev
, &netxen_nic_ethtool_ops
);
699 #ifdef CONFIG_NET_POLL_CONTROLLER
700 netdev
->poll_controller
= netxen_nic_poll_controller
;
702 /* ScatterGather support */
703 netdev
->features
= NETIF_F_SG
;
704 netdev
->features
|= NETIF_F_IP_CSUM
;
705 netdev
->features
|= NETIF_F_TSO
;
706 if (NX_IS_REVISION_P3(revision_id
)) {
707 netdev
->features
|= NETIF_F_IPV6_CSUM
;
708 netdev
->features
|= NETIF_F_TSO6
;
711 if (adapter
->pci_using_dac
)
712 netdev
->features
|= NETIF_F_HIGHDMA
;
715 * Set the CRB window to invalid. If any register in window 0 is
716 * accessed it should set the window to 0 and then reset it to 1.
718 adapter
->curr_window
= 255;
720 if (netxen_nic_get_board_info(adapter
) != 0) {
721 printk("%s: Error getting board config info.\n",
722 netxen_nic_driver_name
);
724 goto err_out_iounmap
;
727 netxen_initialize_adapter_ops(adapter
);
729 /* Mezz cards have PCI function 0,2,3 enabled */
730 switch (adapter
->ahw
.boardcfg
.board_type
) {
731 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
732 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
733 if (pci_func_id
>= 2)
734 adapter
->portnum
= pci_func_id
- 2;
741 * This call will setup various max rx/tx counts.
742 * It must be done before any buffer/ring allocations.
744 netxen_check_options(adapter
);
747 if (NX_IS_REVISION_P3(revision_id
)) {
748 if (adapter
->ahw
.pci_func
== 0)
751 if (adapter
->portnum
== 0)
756 first_boot
= adapter
->pci_read_normalize(adapter
,
757 NETXEN_CAM_RAM(0x1fc));
759 err
= netxen_check_hw_init(adapter
, first_boot
);
761 printk(KERN_ERR
"%s: error in init HW init sequence\n",
762 netxen_nic_driver_name
);
763 goto err_out_iounmap
;
766 if (NX_IS_REVISION_P3(revision_id
))
767 netxen_set_port_mode(adapter
);
769 if (first_boot
!= 0x55555555) {
770 adapter
->pci_write_normalize(adapter
,
771 CRB_CMDPEG_STATE
, 0);
772 netxen_pinit_from_rom(adapter
, 0);
774 netxen_load_firmware(adapter
);
777 if (NX_IS_REVISION_P3(revision_id
))
778 netxen_pcie_strap_init(adapter
);
780 if (NX_IS_REVISION_P2(revision_id
)) {
782 /* Initialize multicast addr pool owners */
784 if (adapter
->ahw
.board_type
== NETXEN_NIC_XGBE
)
786 netxen_crb_writelit_adapter(adapter
,
787 NETXEN_MAC_ADDR_CNTL_REG
, val
);
791 if ((first_boot
== 0x55555555) &&
792 (NX_IS_REVISION_P2(revision_id
))) {
793 /* Unlock the HW, prompting the boot sequence */
794 adapter
->pci_write_normalize(adapter
,
795 NETXEN_ROMUSB_GLB_PEGTUNE_DONE
, 1);
798 err
= netxen_initialize_adapter_offload(adapter
);
800 goto err_out_iounmap
;
803 * Tell the hardware our version number.
805 i
= (_NETXEN_NIC_LINUX_MAJOR
<< 16)
806 | ((_NETXEN_NIC_LINUX_MINOR
<< 8))
807 | (_NETXEN_NIC_LINUX_SUBVERSION
);
808 adapter
->pci_write_normalize(adapter
, CRB_DRIVER_VERSION
, i
);
810 /* Handshake with the card before we register the devices. */
811 netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
815 netxen_nic_flash_print(adapter
);
817 if (NX_IS_REVISION_P3(revision_id
)) {
818 adapter
->hw_read_wx(adapter
,
819 NETXEN_MIU_MN_CONTROL
, &val
, 4);
820 adapter
->ahw
.cut_through
= (val
& 0x4) ? 1 : 0;
821 dev_info(&pdev
->dev
, "firmware running in %s mode\n",
822 adapter
->ahw
.cut_through
? "cut through" : "legacy");
826 * See if the firmware gave us a virtual-physical port mapping.
828 adapter
->physical_port
= adapter
->portnum
;
829 i
= adapter
->pci_read_normalize(adapter
, CRB_V2P(adapter
->portnum
));
831 adapter
->physical_port
= i
;
833 adapter
->flags
&= ~(NETXEN_NIC_MSI_ENABLED
| NETXEN_NIC_MSIX_ENABLED
);
835 netxen_set_msix_bit(pdev
, 0);
837 if (NX_IS_REVISION_P3(revision_id
)) {
838 if ((mem_len
!= NETXEN_PCI_128MB_SIZE
) &&
839 mem_len
!= NETXEN_PCI_2MB_SIZE
)
840 adapter
->msix_supported
= 0;
843 if (adapter
->msix_supported
) {
845 netxen_init_msix_entries(adapter
);
847 if (pci_enable_msix(pdev
, adapter
->msix_entries
,
848 MSIX_ENTRIES_PER_ADAPTER
))
851 adapter
->flags
|= NETXEN_NIC_MSIX_ENABLED
;
852 netxen_set_msix_bit(pdev
, 1);
853 dev_info(&pdev
->dev
, "using msi-x interrupts\n");
857 if (use_msi
&& !pci_enable_msi(pdev
)) {
858 adapter
->flags
|= NETXEN_NIC_MSI_ENABLED
;
859 dev_info(&pdev
->dev
, "using msi interrupts\n");
861 dev_info(&pdev
->dev
, "using legacy interrupts\n");
864 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
865 netdev
->irq
= adapter
->msix_entries
[0].vector
;
867 netdev
->irq
= pdev
->irq
;
869 err
= netxen_receive_peg_ready(adapter
);
871 goto err_out_disable_msi
;
873 init_timer(&adapter
->watchdog_timer
);
874 adapter
->watchdog_timer
.function
= &netxen_watchdog
;
875 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
876 INIT_WORK(&adapter
->watchdog_task
, netxen_watchdog_task
);
877 INIT_WORK(&adapter
->tx_timeout_task
, netxen_tx_timeout_task
);
879 err
= netxen_read_mac_addr(adapter
);
881 dev_warn(&pdev
->dev
, "failed to read mac addr\n");
883 netif_carrier_off(netdev
);
884 netif_stop_queue(netdev
);
886 if ((err
= register_netdev(netdev
))) {
887 printk(KERN_ERR
"%s: register_netdev failed port #%d"
888 " aborting\n", netxen_nic_driver_name
,
891 goto err_out_disable_msi
;
894 pci_set_drvdata(pdev
, adapter
);
896 switch (adapter
->ahw
.board_type
) {
898 dev_info(&adapter
->pdev
->dev
, "%s: GbE port initialized\n",
899 adapter
->netdev
->name
);
901 case NETXEN_NIC_XGBE
:
902 dev_info(&adapter
->pdev
->dev
, "%s: XGbE port initialized\n",
903 adapter
->netdev
->name
);
910 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
911 pci_disable_msix(pdev
);
912 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
913 pci_disable_msi(pdev
);
916 netxen_free_adapter_offload(adapter
);
933 pci_release_regions(pdev
);
935 err_out_disable_pdev
:
936 pci_set_drvdata(pdev
, NULL
);
937 pci_disable_device(pdev
);
941 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
)
943 struct netxen_adapter
*adapter
;
944 struct net_device
*netdev
;
946 adapter
= pci_get_drvdata(pdev
);
950 netdev
= adapter
->netdev
;
952 unregister_netdev(netdev
);
954 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
955 netxen_free_hw_resources(adapter
);
956 netxen_release_rx_buffers(adapter
);
957 netxen_free_sw_resources(adapter
);
960 if (adapter
->portnum
== 0)
961 netxen_free_adapter_offload(adapter
);
964 free_irq(adapter
->irq
, adapter
);
966 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
967 pci_disable_msix(pdev
);
968 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
969 pci_disable_msi(pdev
);
971 iounmap(adapter
->ahw
.db_base
);
972 iounmap(adapter
->ahw
.pci_base0
);
973 iounmap(adapter
->ahw
.pci_base1
);
974 iounmap(adapter
->ahw
.pci_base2
);
976 pci_release_regions(pdev
);
977 pci_disable_device(pdev
);
978 pci_set_drvdata(pdev
, NULL
);
984 * Called when a network interface is made active
985 * @returns 0 on success, negative value on failure
987 static int netxen_nic_open(struct net_device
*netdev
)
989 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
992 irq_handler_t handler
;
993 unsigned long flags
= IRQF_SAMPLE_RANDOM
;
995 if (adapter
->driver_mismatch
)
998 if (adapter
->is_up
!= NETXEN_ADAPTER_UP_MAGIC
) {
999 err
= netxen_init_firmware(adapter
);
1001 printk(KERN_ERR
"Failed to init firmware\n");
1005 if (adapter
->fw_major
< 4)
1006 adapter
->max_rds_rings
= 3;
1008 adapter
->max_rds_rings
= 2;
1010 err
= netxen_alloc_sw_resources(adapter
);
1012 printk(KERN_ERR
"%s: Error in setting sw resources\n",
1017 netxen_nic_clear_stats(adapter
);
1019 err
= netxen_alloc_hw_resources(adapter
);
1021 printk(KERN_ERR
"%s: Error in setting hw resources\n",
1023 goto err_out_free_sw
;
1026 if ((adapter
->msi_mode
!= MSI_MODE_MULTIFUNC
) ||
1027 (adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
)) {
1028 printk(KERN_ERR
"%s: Firmware interrupt scheme is "
1029 "incompatible with driver\n",
1031 adapter
->driver_mismatch
= 1;
1032 goto err_out_free_hw
;
1035 if (adapter
->fw_major
< 4) {
1036 adapter
->crb_addr_cmd_producer
=
1037 crb_cmd_producer
[adapter
->portnum
];
1038 adapter
->crb_addr_cmd_consumer
=
1039 crb_cmd_consumer
[adapter
->portnum
];
1041 netxen_nic_update_cmd_producer(adapter
, 0);
1042 netxen_nic_update_cmd_consumer(adapter
, 0);
1045 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1046 for (ring
= 0; ring
< adapter
->max_rds_rings
; ring
++)
1047 netxen_post_rx_buffers(adapter
, ctx
, ring
);
1049 if (NETXEN_IS_MSI_FAMILY(adapter
))
1050 handler
= netxen_msi_intr
;
1052 flags
|= IRQF_SHARED
;
1053 handler
= netxen_intr
;
1055 adapter
->irq
= netdev
->irq
;
1056 err
= request_irq(adapter
->irq
, handler
,
1057 flags
, netdev
->name
, adapter
);
1059 printk(KERN_ERR
"request_irq failed with: %d\n", err
);
1060 goto err_out_free_rxbuf
;
1063 adapter
->is_up
= NETXEN_ADAPTER_UP_MAGIC
;
1066 /* Done here again so that even if phantom sw overwrote it,
1068 err
= adapter
->init_port(adapter
, adapter
->physical_port
);
1070 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
1071 netxen_nic_driver_name
, adapter
->portnum
);
1072 goto err_out_free_irq
;
1074 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
1076 netxen_nic_set_link_parameters(adapter
);
1078 netdev
->set_multicast_list(netdev
);
1079 if (adapter
->set_mtu
)
1080 adapter
->set_mtu(adapter
, netdev
->mtu
);
1082 adapter
->ahw
.linkup
= 0;
1083 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1085 napi_enable(&adapter
->napi
);
1086 netxen_nic_enable_int(adapter
);
1088 netif_start_queue(netdev
);
1093 free_irq(adapter
->irq
, adapter
);
1095 netxen_release_rx_buffers(adapter
);
1097 netxen_free_hw_resources(adapter
);
1099 netxen_free_sw_resources(adapter
);
1104 * netxen_nic_close - Disables a network interface entry point
1106 static int netxen_nic_close(struct net_device
*netdev
)
1108 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1110 netif_carrier_off(netdev
);
1111 netif_stop_queue(netdev
);
1112 napi_disable(&adapter
->napi
);
1114 if (adapter
->stop_port
)
1115 adapter
->stop_port(adapter
);
1117 netxen_nic_disable_int(adapter
);
1119 netxen_release_tx_buffers(adapter
);
1121 FLUSH_SCHEDULED_WORK();
1122 del_timer_sync(&adapter
->watchdog_timer
);
1127 void netxen_tso_check(struct netxen_adapter
*adapter
,
1128 struct cmd_desc_type0
*desc
, struct sk_buff
*skb
)
1131 desc
->total_hdr_length
= (sizeof(struct ethhdr
) +
1132 ip_hdrlen(skb
) + tcp_hdrlen(skb
));
1134 if ((NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) &&
1135 (skb
->protocol
== htons(ETH_P_IPV6
)))
1136 netxen_set_cmd_desc_opcode(desc
, TX_TCP_LSO6
);
1138 netxen_set_cmd_desc_opcode(desc
, TX_TCP_LSO
);
1140 } else if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
1141 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
1142 netxen_set_cmd_desc_opcode(desc
, TX_TCP_PKT
);
1143 else if (ip_hdr(skb
)->protocol
== IPPROTO_UDP
)
1144 netxen_set_cmd_desc_opcode(desc
, TX_UDP_PKT
);
1148 desc
->tcp_hdr_offset
= skb_transport_offset(skb
);
1149 desc
->ip_hdr_offset
= skb_network_offset(skb
);
1152 static int netxen_nic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
1154 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1155 struct netxen_hardware_context
*hw
= &adapter
->ahw
;
1156 unsigned int first_seg_len
= skb
->len
- skb
->data_len
;
1157 struct netxen_skb_frag
*buffrag
;
1160 u32 producer
, consumer
;
1161 u32 saved_producer
= 0;
1162 struct cmd_desc_type0
*hwdesc
;
1164 struct netxen_cmd_buffer
*pbuf
= NULL
;
1167 u32 num_txd
= adapter
->max_tx_desc_count
;
1169 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
1171 /* There 4 fragments per descriptor */
1172 no_of_desc
= (frag_count
+ 3) >> 2;
1173 if (netdev
->features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) {
1174 if (skb_shinfo(skb
)->gso_size
> 0) {
1177 if ((ip_hdrlen(skb
) + tcp_hdrlen(skb
) +
1178 sizeof(struct ethhdr
)) >
1179 (sizeof(struct cmd_desc_type0
) - 2)) {
1185 producer
= adapter
->cmd_producer
;
1187 consumer
= adapter
->last_cmd_consumer
;
1188 if ((no_of_desc
+2) > find_diff_among(producer
, consumer
, num_txd
)) {
1189 netif_stop_queue(netdev
);
1191 return NETDEV_TX_BUSY
;
1194 /* Copy the descriptors into the hardware */
1195 saved_producer
= producer
;
1196 hwdesc
= &hw
->cmd_desc_head
[producer
];
1197 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1198 /* Take skb->data itself */
1199 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1200 if ((netdev
->features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) &&
1201 skb_shinfo(skb
)->gso_size
> 0) {
1202 pbuf
->mss
= skb_shinfo(skb
)->gso_size
;
1203 hwdesc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
1208 pbuf
->total_length
= skb
->len
;
1210 pbuf
->cmd
= TX_ETHER_PKT
;
1211 pbuf
->frag_count
= frag_count
;
1212 pbuf
->port
= adapter
->portnum
;
1213 buffrag
= &pbuf
->frag_array
[0];
1214 buffrag
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, first_seg_len
,
1216 buffrag
->length
= first_seg_len
;
1217 netxen_set_cmd_desc_totallength(hwdesc
, skb
->len
);
1218 netxen_set_cmd_desc_num_of_buff(hwdesc
, frag_count
);
1219 netxen_set_cmd_desc_opcode(hwdesc
, TX_ETHER_PKT
);
1221 netxen_set_cmd_desc_port(hwdesc
, adapter
->portnum
);
1222 netxen_set_cmd_desc_ctxid(hwdesc
, adapter
->portnum
);
1223 hwdesc
->buffer1_length
= cpu_to_le16(first_seg_len
);
1224 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
1226 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
1227 struct skb_frag_struct
*frag
;
1229 unsigned long offset
;
1230 dma_addr_t temp_dma
;
1232 /* move to next desc. if there is a need */
1233 if ((i
& 0x3) == 0) {
1235 producer
= get_next_index(producer
, num_txd
);
1236 hwdesc
= &hw
->cmd_desc_head
[producer
];
1237 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1238 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1241 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1243 offset
= frag
->page_offset
;
1246 temp_dma
= pci_map_page(adapter
->pdev
, frag
->page
, offset
,
1247 len
, PCI_DMA_TODEVICE
);
1250 buffrag
->dma
= temp_dma
;
1251 buffrag
->length
= temp_len
;
1255 hwdesc
->buffer1_length
= cpu_to_le16(temp_len
);
1256 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1259 hwdesc
->buffer2_length
= cpu_to_le16(temp_len
);
1260 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1263 hwdesc
->buffer3_length
= cpu_to_le16(temp_len
);
1264 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1267 hwdesc
->buffer4_length
= cpu_to_le16(temp_len
);
1268 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1273 producer
= get_next_index(producer
, num_txd
);
1275 /* might change opcode to TX_TCP_LSO */
1276 netxen_tso_check(adapter
, &hw
->cmd_desc_head
[saved_producer
], skb
);
1278 /* For LSO, we need to copy the MAC/IP/TCP headers into
1279 * the descriptor ring
1281 if (netxen_get_cmd_desc_opcode(&hw
->cmd_desc_head
[saved_producer
])
1283 int hdr_len
, first_hdr_len
, more_hdr
;
1284 hdr_len
= hw
->cmd_desc_head
[saved_producer
].total_hdr_length
;
1285 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1286 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1289 first_hdr_len
= hdr_len
;
1292 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1293 hwdesc
= &hw
->cmd_desc_head
[producer
];
1294 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1297 /* copy the first 64 bytes */
1298 memcpy(((void *)hwdesc
) + 2,
1299 (void *)(skb
->data
), first_hdr_len
);
1300 producer
= get_next_index(producer
, num_txd
);
1303 hwdesc
= &hw
->cmd_desc_head
[producer
];
1304 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1306 /* copy the next 64 bytes - should be enough except
1307 * for pathological case
1309 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1313 producer
= get_next_index(producer
, num_txd
);
1317 adapter
->cmd_producer
= producer
;
1318 adapter
->stats
.txbytes
+= skb
->len
;
1320 netxen_nic_update_cmd_producer(adapter
, adapter
->cmd_producer
);
1322 adapter
->stats
.xmitcalled
++;
1323 netdev
->trans_start
= jiffies
;
1325 return NETDEV_TX_OK
;
1328 static int netxen_nic_check_temp(struct netxen_adapter
*adapter
)
1330 struct net_device
*netdev
= adapter
->netdev
;
1331 uint32_t temp
, temp_state
, temp_val
;
1334 temp
= adapter
->pci_read_normalize(adapter
, CRB_TEMP_STATE
);
1336 temp_state
= nx_get_temp_state(temp
);
1337 temp_val
= nx_get_temp_val(temp
);
1339 if (temp_state
== NX_TEMP_PANIC
) {
1341 "%s: Device temperature %d degrees C exceeds"
1342 " maximum allowed. Hardware has been shut down.\n",
1343 netxen_nic_driver_name
, temp_val
);
1345 netif_carrier_off(netdev
);
1346 netif_stop_queue(netdev
);
1348 } else if (temp_state
== NX_TEMP_WARN
) {
1349 if (adapter
->temp
== NX_TEMP_NORMAL
) {
1351 "%s: Device temperature %d degrees C "
1352 "exceeds operating range."
1353 " Immediate action needed.\n",
1354 netxen_nic_driver_name
, temp_val
);
1357 if (adapter
->temp
== NX_TEMP_WARN
) {
1359 "%s: Device temperature is now %d degrees C"
1360 " in normal range.\n", netxen_nic_driver_name
,
1364 adapter
->temp
= temp_state
;
1368 static void netxen_nic_handle_phy_intr(struct netxen_adapter
*adapter
)
1370 struct net_device
*netdev
= adapter
->netdev
;
1371 u32 val
, port
, linkup
;
1373 port
= adapter
->physical_port
;
1375 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
1376 val
= adapter
->pci_read_normalize(adapter
, CRB_XG_STATE_P3
);
1377 val
= XG_LINK_STATE_P3(adapter
->ahw
.pci_func
, val
);
1378 linkup
= (val
== XG_LINK_UP_P3
);
1380 val
= adapter
->pci_read_normalize(adapter
, CRB_XG_STATE
);
1381 if (adapter
->ahw
.board_type
== NETXEN_NIC_GBE
)
1382 linkup
= (val
>> port
) & 1;
1384 val
= (val
>> port
*8) & 0xff;
1385 linkup
= (val
== XG_LINK_UP
);
1389 if (adapter
->ahw
.linkup
&& !linkup
) {
1390 printk(KERN_INFO
"%s: %s NIC Link is down\n",
1391 netxen_nic_driver_name
, netdev
->name
);
1392 adapter
->ahw
.linkup
= 0;
1393 if (netif_running(netdev
)) {
1394 netif_carrier_off(netdev
);
1395 netif_stop_queue(netdev
);
1397 } else if (!adapter
->ahw
.linkup
&& linkup
) {
1398 printk(KERN_INFO
"%s: %s NIC Link is up\n",
1399 netxen_nic_driver_name
, netdev
->name
);
1400 adapter
->ahw
.linkup
= 1;
1401 if (netif_running(netdev
)) {
1402 netif_carrier_on(netdev
);
1403 netif_wake_queue(netdev
);
1408 static void netxen_watchdog(unsigned long v
)
1410 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1412 SCHEDULE_WORK(&adapter
->watchdog_task
);
1415 void netxen_watchdog_task(struct work_struct
*work
)
1417 struct netxen_adapter
*adapter
=
1418 container_of(work
, struct netxen_adapter
, watchdog_task
);
1420 if ((adapter
->portnum
== 0) && netxen_nic_check_temp(adapter
))
1423 netxen_nic_handle_phy_intr(adapter
);
1425 if (netif_running(adapter
->netdev
))
1426 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1429 static void netxen_tx_timeout(struct net_device
*netdev
)
1431 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1432 netdev_priv(netdev
);
1433 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1436 static void netxen_tx_timeout_task(struct work_struct
*work
)
1438 struct netxen_adapter
*adapter
=
1439 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1441 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1442 netxen_nic_driver_name
, adapter
->netdev
->name
);
1444 netxen_nic_disable_int(adapter
);
1445 napi_disable(&adapter
->napi
);
1447 adapter
->netdev
->trans_start
= jiffies
;
1449 napi_enable(&adapter
->napi
);
1450 netxen_nic_enable_int(adapter
);
1451 netif_wake_queue(adapter
->netdev
);
1455 * netxen_nic_get_stats - Get System Network Statistics
1456 * @netdev: network interface device structure
1458 struct net_device_stats
*netxen_nic_get_stats(struct net_device
*netdev
)
1460 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1461 struct net_device_stats
*stats
= &adapter
->net_stats
;
1463 memset(stats
, 0, sizeof(*stats
));
1465 /* total packets received */
1466 stats
->rx_packets
= adapter
->stats
.no_rcv
;
1467 /* total packets transmitted */
1468 stats
->tx_packets
= adapter
->stats
.xmitedframes
+
1469 adapter
->stats
.xmitfinished
;
1470 /* total bytes received */
1471 stats
->rx_bytes
= adapter
->stats
.rxbytes
;
1472 /* total bytes transmitted */
1473 stats
->tx_bytes
= adapter
->stats
.txbytes
;
1474 /* bad packets received */
1475 stats
->rx_errors
= adapter
->stats
.rcvdbadskb
;
1476 /* packet transmit problems */
1477 stats
->tx_errors
= adapter
->stats
.nocmddescriptor
;
1478 /* no space in linux buffers */
1479 stats
->rx_dropped
= adapter
->stats
.rxdropped
;
1480 /* no space available in linux */
1481 stats
->tx_dropped
= adapter
->stats
.txdropped
;
1486 static irqreturn_t
netxen_intr(int irq
, void *data
)
1488 struct netxen_adapter
*adapter
= data
;
1491 status
= adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1493 if (!(status
& adapter
->legacy_intr
.int_vec_bit
))
1496 if (adapter
->ahw
.revision_id
>= NX_P3_B1
) {
1497 /* check interrupt state machine, to be sure */
1498 status
= adapter
->pci_read_immediate(adapter
,
1500 if (!ISR_LEGACY_INT_TRIGGERED(status
))
1504 unsigned long our_int
= 0;
1506 our_int
= adapter
->pci_read_normalize(adapter
, CRB_INT_VECTOR
);
1508 /* not our interrupt */
1509 if (!test_and_clear_bit((7 + adapter
->portnum
), &our_int
))
1512 /* claim interrupt */
1513 adapter
->pci_write_normalize(adapter
,
1514 CRB_INT_VECTOR
, (our_int
& 0xffffffff));
1517 /* clear interrupt */
1518 if (adapter
->fw_major
< 4)
1519 netxen_nic_disable_int(adapter
);
1521 adapter
->pci_write_immediate(adapter
,
1522 adapter
->legacy_intr
.tgt_status_reg
,
1524 /* read twice to ensure write is flushed */
1525 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1526 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1528 napi_schedule(&adapter
->napi
);
1533 static irqreturn_t
netxen_msi_intr(int irq
, void *data
)
1535 struct netxen_adapter
*adapter
= data
;
1537 /* clear interrupt */
1538 adapter
->pci_write_immediate(adapter
,
1539 msi_tgt_status
[adapter
->ahw
.pci_func
], 0xffffffff);
1541 napi_schedule(&adapter
->napi
);
1545 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
)
1547 struct netxen_adapter
*adapter
= container_of(napi
, struct netxen_adapter
, napi
);
1552 tx_complete
= netxen_process_cmd_ring(adapter
);
1555 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1557 * Fairness issue. This will give undue weight to the
1558 * receive context 0.
1562 * To avoid starvation, we give each of our receivers,
1563 * a fraction of the quota. Sometimes, it might happen that we
1564 * have enough quota to process every packet, but since all the
1565 * packets are on one context, it gets only half of the quota,
1566 * and ends up not processing it.
1568 work_done
+= netxen_process_rcv_ring(adapter
, ctx
,
1569 budget
/ MAX_RCV_CTX
);
1572 if ((work_done
< budget
) && tx_complete
) {
1573 netif_rx_complete(adapter
->netdev
, &adapter
->napi
);
1574 netxen_nic_enable_int(adapter
);
1580 #ifdef CONFIG_NET_POLL_CONTROLLER
1581 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1583 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1584 disable_irq(adapter
->irq
);
1585 netxen_intr(adapter
->irq
, adapter
);
1586 enable_irq(adapter
->irq
);
1590 static struct pci_driver netxen_driver
= {
1591 .name
= netxen_nic_driver_name
,
1592 .id_table
= netxen_pci_tbl
,
1593 .probe
= netxen_nic_probe
,
1594 .remove
= __devexit_p(netxen_nic_remove
)
1597 /* Driver Registration on NetXen card */
1599 static int __init
netxen_init_module(void)
1601 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == NULL
)
1604 return pci_register_driver(&netxen_driver
);
1607 module_init(netxen_init_module
);
1609 static void __exit
netxen_exit_module(void)
1611 pci_unregister_driver(&netxen_driver
);
1612 destroy_workqueue(netxen_workq
);
1615 module_exit(netxen_exit_module
);