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/if_vlan.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 static int port_mode
= NETXEN_PORT_MODE_AUTO_NEG
;
55 /* Default to restricted 1G auto-neg mode */
56 static int wol_port_mode
= 5;
58 static int use_msi
= 1;
60 static int use_msi_x
= 1;
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_nic_poll(struct napi_struct
*napi
, int budget
);
73 #ifdef CONFIG_NET_POLL_CONTROLLER
74 static void netxen_nic_poll_controller(struct net_device
*netdev
);
76 static irqreturn_t
netxen_intr(int irq
, void *data
);
77 static irqreturn_t
netxen_msi_intr(int irq
, void *data
);
79 /* PCI Device ID Table */
80 #define ENTRY(device) \
81 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
82 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
84 static struct pci_device_id netxen_pci_tbl
[] __devinitdata
= {
85 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR
),
86 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4
),
87 ENTRY(PCI_DEVICE_ID_NX2031_4GCU
),
88 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ
),
89 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ
),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT
),
91 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2
),
92 ENTRY(PCI_DEVICE_ID_NX3031
),
96 MODULE_DEVICE_TABLE(pci
, netxen_pci_tbl
);
99 * In netxen_nic_down(), we must wait for any pending callback requests into
100 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
101 * reenabled right after it is deleted in netxen_nic_down().
102 * FLUSH_SCHEDULED_WORK() does this synchronization.
104 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
105 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
106 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
107 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
108 * linkwatch_event() to be executed which also attempts to acquire the rtnl
109 * lock thus causing a deadlock.
112 static struct workqueue_struct
*netxen_workq
;
113 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
114 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
116 static void netxen_watchdog(unsigned long);
118 static uint32_t crb_cmd_producer
[4] = {
119 CRB_CMD_PRODUCER_OFFSET
, CRB_CMD_PRODUCER_OFFSET_1
,
120 CRB_CMD_PRODUCER_OFFSET_2
, CRB_CMD_PRODUCER_OFFSET_3
124 netxen_nic_update_cmd_producer(struct netxen_adapter
*adapter
,
125 uint32_t crb_producer
)
127 adapter
->pci_write_normalize(adapter
,
128 adapter
->crb_addr_cmd_producer
, crb_producer
);
131 static uint32_t crb_cmd_consumer
[4] = {
132 CRB_CMD_CONSUMER_OFFSET
, CRB_CMD_CONSUMER_OFFSET_1
,
133 CRB_CMD_CONSUMER_OFFSET_2
, CRB_CMD_CONSUMER_OFFSET_3
137 netxen_nic_update_cmd_consumer(struct netxen_adapter
*adapter
,
140 adapter
->pci_write_normalize(adapter
,
141 adapter
->crb_addr_cmd_consumer
, crb_consumer
);
144 static uint32_t msi_tgt_status
[8] = {
145 ISR_INT_TARGET_STATUS
, ISR_INT_TARGET_STATUS_F1
,
146 ISR_INT_TARGET_STATUS_F2
, ISR_INT_TARGET_STATUS_F3
,
147 ISR_INT_TARGET_STATUS_F4
, ISR_INT_TARGET_STATUS_F5
,
148 ISR_INT_TARGET_STATUS_F6
, ISR_INT_TARGET_STATUS_F7
151 static struct netxen_legacy_intr_set legacy_intr
[] = NX_LEGACY_INTR_CONFIG
;
153 static inline void netxen_nic_disable_int(struct netxen_adapter
*adapter
)
155 adapter
->pci_write_normalize(adapter
, adapter
->crb_intr_mask
, 0);
158 static inline void netxen_nic_enable_int(struct netxen_adapter
*adapter
)
160 adapter
->pci_write_normalize(adapter
, adapter
->crb_intr_mask
, 0x1);
162 if (!NETXEN_IS_MSI_FAMILY(adapter
))
163 adapter
->pci_write_immediate(adapter
,
164 adapter
->legacy_intr
.tgt_mask_reg
, 0xfbff);
167 static int nx_set_dma_mask(struct netxen_adapter
*adapter
, uint8_t revision_id
)
169 struct pci_dev
*pdev
= adapter
->pdev
;
174 adapter
->dma_mask
= DMA_32BIT_MASK
;
176 if (revision_id
>= NX_P3_B0
) {
177 /* should go to DMA_64BIT_MASK */
178 adapter
->dma_mask
= DMA_39BIT_MASK
;
179 mask
= DMA_39BIT_MASK
;
180 } else if (revision_id
== NX_P3_A2
) {
181 adapter
->dma_mask
= DMA_39BIT_MASK
;
182 mask
= DMA_39BIT_MASK
;
183 } else if (revision_id
== NX_P2_C1
) {
184 adapter
->dma_mask
= DMA_35BIT_MASK
;
185 mask
= DMA_35BIT_MASK
;
187 adapter
->dma_mask
= DMA_32BIT_MASK
;
188 mask
= DMA_32BIT_MASK
;
189 goto set_32_bit_mask
;
193 * Consistent DMA mask is set to 32 bit because it cannot be set to
194 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
195 * come off this pool.
197 if (pci_set_dma_mask(pdev
, mask
) == 0 &&
198 pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
) == 0) {
199 adapter
->pci_using_dac
= 1;
202 #endif /* CONFIG_IA64 */
205 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
207 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
209 DPRINTK(ERR
, "No usable DMA configuration, aborting:%d\n", err
);
213 adapter
->pci_using_dac
= 0;
217 static void netxen_check_options(struct netxen_adapter
*adapter
)
219 switch (adapter
->ahw
.boardcfg
.board_type
) {
220 case NETXEN_BRDTYPE_P3_HMEZ
:
221 case NETXEN_BRDTYPE_P3_XG_LOM
:
222 case NETXEN_BRDTYPE_P3_10G_CX4
:
223 case NETXEN_BRDTYPE_P3_10G_CX4_LP
:
224 case NETXEN_BRDTYPE_P3_IMEZ
:
225 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS
:
226 case NETXEN_BRDTYPE_P3_10G_SFP_QT
:
227 case NETXEN_BRDTYPE_P3_10G_SFP_CT
:
228 case NETXEN_BRDTYPE_P3_10G_XFP
:
229 case NETXEN_BRDTYPE_P3_10000_BASE_T
:
230 adapter
->msix_supported
= !!use_msi_x
;
231 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_10G
;
234 case NETXEN_BRDTYPE_P2_SB31_10G
:
235 case NETXEN_BRDTYPE_P2_SB31_10G_CX4
:
236 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
237 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
238 adapter
->msix_supported
= 0;
239 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_10G
;
242 case NETXEN_BRDTYPE_P3_REF_QG
:
243 case NETXEN_BRDTYPE_P3_4_GB
:
244 case NETXEN_BRDTYPE_P3_4_GB_MM
:
245 adapter
->msix_supported
= !!use_msi_x
;
246 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
249 case NETXEN_BRDTYPE_P2_SB35_4G
:
250 case NETXEN_BRDTYPE_P2_SB31_2G
:
251 adapter
->msix_supported
= 0;
252 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
255 case NETXEN_BRDTYPE_P3_10G_TP
:
256 adapter
->msix_supported
= !!use_msi_x
;
257 if (adapter
->ahw
.board_type
== NETXEN_NIC_XGBE
)
258 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_10G
;
260 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
264 adapter
->msix_supported
= 0;
265 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
267 printk(KERN_WARNING
"Unknown board type(0x%x)\n",
268 adapter
->ahw
.boardcfg
.board_type
);
272 adapter
->max_tx_desc_count
= MAX_CMD_DESCRIPTORS_HOST
;
273 adapter
->max_jumbo_rx_desc_count
= MAX_JUMBO_RCV_DESCRIPTORS
;
274 adapter
->max_lro_rx_desc_count
= MAX_LRO_RCV_DESCRIPTORS
;
276 adapter
->max_possible_rss_rings
= 1;
281 netxen_check_hw_init(struct netxen_adapter
*adapter
, int first_boot
)
285 if (first_boot
== 0x55555555) {
286 /* This is the first boot after power up */
287 adapter
->pci_write_normalize(adapter
,
288 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC
);
290 if (!NX_IS_REVISION_P2(adapter
->ahw
.revision_id
))
293 /* PCI bus master workaround */
294 adapter
->hw_read_wx(adapter
,
295 NETXEN_PCIE_REG(0x4), &first_boot
, 4);
296 if (!(first_boot
& 0x4)) {
298 adapter
->hw_write_wx(adapter
,
299 NETXEN_PCIE_REG(0x4), &first_boot
, 4);
300 adapter
->hw_read_wx(adapter
,
301 NETXEN_PCIE_REG(0x4), &first_boot
, 4);
304 /* This is the first boot after power up */
305 adapter
->hw_read_wx(adapter
,
306 NETXEN_ROMUSB_GLB_SW_RESET
, &first_boot
, 4);
307 if (first_boot
!= 0x80000f) {
308 /* clear the register for future unloads/loads */
309 adapter
->pci_write_normalize(adapter
,
310 NETXEN_CAM_RAM(0x1fc), 0);
314 /* Start P2 boot loader */
315 val
= adapter
->pci_read_normalize(adapter
,
316 NETXEN_ROMUSB_GLB_PEGTUNE_DONE
);
317 adapter
->pci_write_normalize(adapter
,
318 NETXEN_ROMUSB_GLB_PEGTUNE_DONE
, val
| 0x1);
322 val
= adapter
->pci_read_normalize(adapter
,
323 NETXEN_CAM_RAM(0x1fc));
325 if (++timeout
> 5000)
328 } while (val
== NETXEN_BDINFO_MAGIC
);
333 static void netxen_set_port_mode(struct netxen_adapter
*adapter
)
337 val
= adapter
->ahw
.boardcfg
.board_type
;
338 if ((val
== NETXEN_BRDTYPE_P3_HMEZ
) ||
339 (val
== NETXEN_BRDTYPE_P3_XG_LOM
)) {
340 if (port_mode
== NETXEN_PORT_MODE_802_3_AP
) {
341 data
= NETXEN_PORT_MODE_802_3_AP
;
342 adapter
->hw_write_wx(adapter
,
343 NETXEN_PORT_MODE_ADDR
, &data
, 4);
344 } else if (port_mode
== NETXEN_PORT_MODE_XG
) {
345 data
= NETXEN_PORT_MODE_XG
;
346 adapter
->hw_write_wx(adapter
,
347 NETXEN_PORT_MODE_ADDR
, &data
, 4);
348 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_1G
) {
349 data
= NETXEN_PORT_MODE_AUTO_NEG_1G
;
350 adapter
->hw_write_wx(adapter
,
351 NETXEN_PORT_MODE_ADDR
, &data
, 4);
352 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_XG
) {
353 data
= NETXEN_PORT_MODE_AUTO_NEG_XG
;
354 adapter
->hw_write_wx(adapter
,
355 NETXEN_PORT_MODE_ADDR
, &data
, 4);
357 data
= NETXEN_PORT_MODE_AUTO_NEG
;
358 adapter
->hw_write_wx(adapter
,
359 NETXEN_PORT_MODE_ADDR
, &data
, 4);
362 if ((wol_port_mode
!= NETXEN_PORT_MODE_802_3_AP
) &&
363 (wol_port_mode
!= NETXEN_PORT_MODE_XG
) &&
364 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_1G
) &&
365 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_XG
)) {
366 wol_port_mode
= NETXEN_PORT_MODE_AUTO_NEG
;
368 adapter
->hw_write_wx(adapter
, NETXEN_WOL_PORT_MODE
,
373 #define PCI_CAP_ID_GEN 0x10
375 static void netxen_pcie_strap_init(struct netxen_adapter
*adapter
)
382 struct pci_dev
*pdev
;
384 pdev
= adapter
->pdev
;
386 adapter
->hw_read_wx(adapter
,
387 NETXEN_PCIE_REG(PCIE_CHICKEN3
), &chicken
, 4);
388 /* clear chicken3.25:24 */
389 chicken
&= 0xFCFFFFFF;
391 * if gen1 and B0, set F1020 - if gen 2, do nothing
392 * if gen2 set to F1000
394 pos
= pci_find_capability(pdev
, PCI_CAP_ID_GEN
);
396 pci_read_config_dword(pdev
, pos
+ 0x10, &control
);
397 if ((control
& 0x000F0000) != 0x00020000) {
398 /* set chicken3.24 if gen1 */
399 chicken
|= 0x01000000;
401 printk(KERN_INFO
"%s Gen2 strapping detected\n",
402 netxen_nic_driver_name
);
405 /* set chicken3.24 if gen1 */
406 chicken
|= 0x01000000;
407 printk(KERN_INFO
"%s Gen1 strapping detected\n",
408 netxen_nic_driver_name
);
409 if (adapter
->ahw
.revision_id
== NX_P3_B0
)
415 adapter
->hw_write_wx(adapter
,
416 NETXEN_PCIE_REG(PCIE_CHICKEN3
), &chicken
, 4);
421 pdevfuncsave
= pdev
->devfn
;
422 if (pdevfuncsave
& 0x07)
425 for (i
= 0; i
< 8; i
++) {
426 pci_read_config_dword(pdev
, pos
+ 8, &control
);
427 pci_read_config_dword(pdev
, pos
+ 8, &control
);
428 pci_write_config_dword(pdev
, pos
+ 8, c8c9value
);
431 pdev
->devfn
= pdevfuncsave
;
434 static void netxen_set_msix_bit(struct pci_dev
*pdev
, int enable
)
439 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSIX
);
441 pci_read_config_dword(pdev
, pos
, &control
);
443 control
|= PCI_MSIX_FLAGS_ENABLE
;
446 pci_write_config_dword(pdev
, pos
, control
);
450 static void netxen_init_msix_entries(struct netxen_adapter
*adapter
)
454 for (i
= 0; i
< MSIX_ENTRIES_PER_ADAPTER
; i
++)
455 adapter
->msix_entries
[i
].entry
= i
;
459 netxen_read_mac_addr(struct netxen_adapter
*adapter
)
464 struct net_device
*netdev
= adapter
->netdev
;
465 struct pci_dev
*pdev
= adapter
->pdev
;
467 if (netxen_is_flash_supported(adapter
) != 0)
470 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
471 if (netxen_p3_get_mac_addr(adapter
, &mac_addr
) != 0)
474 if (netxen_get_flash_mac_addr(adapter
, &mac_addr
) != 0)
478 p
= (unsigned char *)&mac_addr
;
479 for (i
= 0; i
< 6; i
++)
480 netdev
->dev_addr
[i
] = *(p
+ 5 - i
);
482 memcpy(netdev
->perm_addr
, netdev
->dev_addr
, netdev
->addr_len
);
484 /* set station address */
486 if (!is_valid_ether_addr(netdev
->perm_addr
))
487 dev_warn(&pdev
->dev
, "Bad MAC address %pM.\n", netdev
->dev_addr
);
489 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
494 static void netxen_set_multicast_list(struct net_device
*dev
)
496 struct netxen_adapter
*adapter
= netdev_priv(dev
);
498 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
499 netxen_p3_nic_set_multi(dev
);
501 netxen_p2_nic_set_multi(dev
);
504 static const struct net_device_ops netxen_netdev_ops
= {
505 .ndo_open
= netxen_nic_open
,
506 .ndo_stop
= netxen_nic_close
,
507 .ndo_start_xmit
= netxen_nic_xmit_frame
,
508 .ndo_get_stats
= netxen_nic_get_stats
,
509 .ndo_validate_addr
= eth_validate_addr
,
510 .ndo_set_multicast_list
= netxen_set_multicast_list
,
511 .ndo_set_mac_address
= netxen_nic_set_mac
,
512 .ndo_change_mtu
= netxen_nic_change_mtu
,
513 .ndo_tx_timeout
= netxen_tx_timeout
,
514 #ifdef CONFIG_NET_POLL_CONTROLLER
515 .ndo_poll_controller
= netxen_nic_poll_controller
,
522 * The Linux system will invoke this after identifying the vendor ID and
523 * device Id in the pci_tbl supported by this module.
525 * A quad port card has one operational PCI config space, (function 0),
526 * which is used to access all four ports.
528 * This routine will initialize the adapter, and setup the global parameters
529 * along with the port's specific structure.
532 netxen_nic_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
534 struct net_device
*netdev
= NULL
;
535 struct netxen_adapter
*adapter
= NULL
;
536 void __iomem
*mem_ptr0
= NULL
;
537 void __iomem
*mem_ptr1
= NULL
;
538 void __iomem
*mem_ptr2
= NULL
;
539 unsigned long first_page_group_end
;
540 unsigned long first_page_group_start
;
543 u8 __iomem
*db_ptr
= NULL
;
544 unsigned long mem_base
, mem_len
, db_base
, db_len
, pci_len0
= 0;
546 int first_driver
, first_boot
;
548 int pci_func_id
= PCI_FUNC(pdev
->devfn
);
549 struct netxen_legacy_intr_set
*legacy_intrp
;
552 if (pci_func_id
== 0)
553 printk(KERN_INFO
"%s\n", netxen_nic_driver_string
);
555 if (pdev
->class != 0x020000) {
556 printk(KERN_DEBUG
"NetXen function %d, class %x will not "
557 "be enabled.\n",pci_func_id
, pdev
->class);
561 if (pdev
->revision
>= NX_P3_A0
&& pdev
->revision
< NX_P3_B1
) {
562 printk(KERN_WARNING
"NetXen chip revisions between 0x%x-0x%x"
563 "will not be enabled.\n",
568 if ((err
= pci_enable_device(pdev
)))
571 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
573 goto err_out_disable_pdev
;
576 if ((err
= pci_request_regions(pdev
, netxen_nic_driver_name
)))
577 goto err_out_disable_pdev
;
579 pci_set_master(pdev
);
581 netdev
= alloc_etherdev(sizeof(struct netxen_adapter
));
583 printk(KERN_ERR
"%s: Failed to allocate memory for the "
584 "device block.Check system memory resource"
585 " usage.\n", netxen_nic_driver_name
);
586 goto err_out_free_res
;
589 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
591 adapter
= netdev_priv(netdev
);
592 adapter
->netdev
= netdev
;
593 adapter
->pdev
= pdev
;
594 adapter
->ahw
.pci_func
= pci_func_id
;
596 revision_id
= pdev
->revision
;
597 adapter
->ahw
.revision_id
= revision_id
;
599 err
= nx_set_dma_mask(adapter
, revision_id
);
601 goto err_out_free_netdev
;
603 rwlock_init(&adapter
->adapter_lock
);
604 adapter
->ahw
.qdr_sn_window
= -1;
605 adapter
->ahw
.ddr_mn_window
= -1;
607 /* remap phys address */
608 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
609 mem_len
= pci_resource_len(pdev
, 0);
612 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_128M
;
613 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_128M
;
614 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_128M
;
615 adapter
->pci_write_immediate
= netxen_nic_pci_write_immediate_128M
;
616 adapter
->pci_read_normalize
= netxen_nic_pci_read_normalize_128M
;
617 adapter
->pci_write_normalize
= netxen_nic_pci_write_normalize_128M
;
618 adapter
->pci_set_window
= netxen_nic_pci_set_window_128M
;
619 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_128M
;
620 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_128M
;
622 /* 128 Meg of memory */
623 if (mem_len
== NETXEN_PCI_128MB_SIZE
) {
624 mem_ptr0
= ioremap(mem_base
, FIRST_PAGE_GROUP_SIZE
);
625 mem_ptr1
= ioremap(mem_base
+ SECOND_PAGE_GROUP_START
,
626 SECOND_PAGE_GROUP_SIZE
);
627 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
,
628 THIRD_PAGE_GROUP_SIZE
);
629 first_page_group_start
= FIRST_PAGE_GROUP_START
;
630 first_page_group_end
= FIRST_PAGE_GROUP_END
;
631 } else if (mem_len
== NETXEN_PCI_32MB_SIZE
) {
632 mem_ptr1
= ioremap(mem_base
, SECOND_PAGE_GROUP_SIZE
);
633 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
-
634 SECOND_PAGE_GROUP_START
, THIRD_PAGE_GROUP_SIZE
);
635 first_page_group_start
= 0;
636 first_page_group_end
= 0;
637 } else if (mem_len
== NETXEN_PCI_2MB_SIZE
) {
638 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_2M
;
639 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_2M
;
640 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_2M
;
641 adapter
->pci_write_immediate
=
642 netxen_nic_pci_write_immediate_2M
;
643 adapter
->pci_read_normalize
= netxen_nic_pci_read_normalize_2M
;
644 adapter
->pci_write_normalize
=
645 netxen_nic_pci_write_normalize_2M
;
646 adapter
->pci_set_window
= netxen_nic_pci_set_window_2M
;
647 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_2M
;
648 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_2M
;
650 mem_ptr0
= ioremap(mem_base
, mem_len
);
652 first_page_group_start
= 0;
653 first_page_group_end
= 0;
655 adapter
->ahw
.ddr_mn_window
= 0;
656 adapter
->ahw
.qdr_sn_window
= 0;
658 adapter
->ahw
.mn_win_crb
= 0x100000 + PCIX_MN_WINDOW
+
659 (pci_func_id
* 0x20);
660 adapter
->ahw
.ms_win_crb
= 0x100000 + PCIX_SN_WINDOW
;
662 adapter
->ahw
.ms_win_crb
+= (pci_func_id
* 0x20);
664 adapter
->ahw
.ms_win_crb
+=
665 0xA0 + ((pci_func_id
- 4) * 0x10);
668 goto err_out_free_netdev
;
671 dev_info(&pdev
->dev
, "%dMB memory map\n", (int)(mem_len
>>20));
673 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
674 db_len
= pci_resource_len(pdev
, 4);
677 printk(KERN_ERR
"%s: doorbell is disabled\n",
678 netxen_nic_driver_name
);
680 goto err_out_iounmap
;
682 DPRINTK(INFO
, "doorbell ioremap from %lx a size of %lx\n", db_base
,
685 db_ptr
= ioremap(db_base
, NETXEN_DB_MAPSIZE_BYTES
);
687 printk(KERN_ERR
"%s: Failed to allocate doorbell map.",
688 netxen_nic_driver_name
);
690 goto err_out_iounmap
;
692 DPRINTK(INFO
, "doorbell ioremaped at %p\n", db_ptr
);
694 adapter
->ahw
.pci_base0
= mem_ptr0
;
695 adapter
->ahw
.pci_len0
= pci_len0
;
696 adapter
->ahw
.first_page_group_start
= first_page_group_start
;
697 adapter
->ahw
.first_page_group_end
= first_page_group_end
;
698 adapter
->ahw
.pci_base1
= mem_ptr1
;
699 adapter
->ahw
.pci_base2
= mem_ptr2
;
700 adapter
->ahw
.db_base
= db_ptr
;
701 adapter
->ahw
.db_len
= db_len
;
703 netif_napi_add(netdev
, &adapter
->napi
,
704 netxen_nic_poll
, NETXEN_NETDEV_WEIGHT
);
706 if (revision_id
>= NX_P3_B0
)
707 legacy_intrp
= &legacy_intr
[pci_func_id
];
709 legacy_intrp
= &legacy_intr
[0];
711 adapter
->legacy_intr
.int_vec_bit
= legacy_intrp
->int_vec_bit
;
712 adapter
->legacy_intr
.tgt_status_reg
= legacy_intrp
->tgt_status_reg
;
713 adapter
->legacy_intr
.tgt_mask_reg
= legacy_intrp
->tgt_mask_reg
;
714 adapter
->legacy_intr
.pci_int_reg
= legacy_intrp
->pci_int_reg
;
716 /* this will be read from FW later */
717 adapter
->intr_scheme
= -1;
718 adapter
->msi_mode
= -1;
720 /* This will be reset for mezz cards */
721 adapter
->portnum
= pci_func_id
;
722 adapter
->status
&= ~NETXEN_NETDEV_STATUS
;
723 adapter
->rx_csum
= 1;
724 adapter
->mc_enabled
= 0;
725 if (NX_IS_REVISION_P3(revision_id
))
726 adapter
->max_mc_count
= 38;
728 adapter
->max_mc_count
= 16;
730 netdev
->netdev_ops
= &netxen_netdev_ops
;
731 netdev
->watchdog_timeo
= 2*HZ
;
733 netxen_nic_change_mtu(netdev
, netdev
->mtu
);
735 SET_ETHTOOL_OPS(netdev
, &netxen_nic_ethtool_ops
);
737 /* ScatterGather support */
738 netdev
->features
= NETIF_F_SG
;
739 netdev
->features
|= NETIF_F_IP_CSUM
;
740 netdev
->features
|= NETIF_F_TSO
;
741 if (NX_IS_REVISION_P3(revision_id
)) {
742 netdev
->features
|= NETIF_F_IPV6_CSUM
;
743 netdev
->features
|= NETIF_F_TSO6
;
746 if (adapter
->pci_using_dac
)
747 netdev
->features
|= NETIF_F_HIGHDMA
;
750 * Set the CRB window to invalid. If any register in window 0 is
751 * accessed it should set the window to 0 and then reset it to 1.
753 adapter
->curr_window
= 255;
755 if (netxen_nic_get_board_info(adapter
) != 0) {
756 printk("%s: Error getting board config info.\n",
757 netxen_nic_driver_name
);
759 goto err_out_iounmap
;
762 netxen_initialize_adapter_ops(adapter
);
764 /* Mezz cards have PCI function 0,2,3 enabled */
765 switch (adapter
->ahw
.boardcfg
.board_type
) {
766 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
767 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
768 if (pci_func_id
>= 2)
769 adapter
->portnum
= pci_func_id
- 2;
776 * This call will setup various max rx/tx counts.
777 * It must be done before any buffer/ring allocations.
779 netxen_check_options(adapter
);
782 if (NX_IS_REVISION_P3(revision_id
)) {
783 if (adapter
->ahw
.pci_func
== 0)
786 if (adapter
->portnum
== 0)
791 first_boot
= adapter
->pci_read_normalize(adapter
,
792 NETXEN_CAM_RAM(0x1fc));
794 err
= netxen_check_hw_init(adapter
, first_boot
);
796 printk(KERN_ERR
"%s: error in init HW init sequence\n",
797 netxen_nic_driver_name
);
798 goto err_out_iounmap
;
801 if (NX_IS_REVISION_P3(revision_id
))
802 netxen_set_port_mode(adapter
);
804 if (first_boot
!= 0x55555555) {
805 adapter
->pci_write_normalize(adapter
,
806 CRB_CMDPEG_STATE
, 0);
807 netxen_pinit_from_rom(adapter
, 0);
810 netxen_load_firmware(adapter
);
812 if (NX_IS_REVISION_P3(revision_id
))
813 netxen_pcie_strap_init(adapter
);
815 if (NX_IS_REVISION_P2(revision_id
)) {
817 /* Initialize multicast addr pool owners */
819 if (adapter
->ahw
.board_type
== NETXEN_NIC_XGBE
)
821 netxen_crb_writelit_adapter(adapter
,
822 NETXEN_MAC_ADDR_CNTL_REG
, val
);
826 err
= netxen_initialize_adapter_offload(adapter
);
828 goto err_out_iounmap
;
831 * Tell the hardware our version number.
833 i
= (_NETXEN_NIC_LINUX_MAJOR
<< 16)
834 | ((_NETXEN_NIC_LINUX_MINOR
<< 8))
835 | (_NETXEN_NIC_LINUX_SUBVERSION
);
836 adapter
->pci_write_normalize(adapter
, CRB_DRIVER_VERSION
, i
);
838 /* Handshake with the card before we register the devices. */
839 err
= netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
841 goto err_out_free_offload
;
845 netxen_nic_flash_print(adapter
);
847 if (NX_IS_REVISION_P3(revision_id
)) {
848 adapter
->hw_read_wx(adapter
,
849 NETXEN_MIU_MN_CONTROL
, &val
, 4);
850 adapter
->ahw
.cut_through
= (val
& 0x4) ? 1 : 0;
851 dev_info(&pdev
->dev
, "firmware running in %s mode\n",
852 adapter
->ahw
.cut_through
? "cut through" : "legacy");
856 * See if the firmware gave us a virtual-physical port mapping.
858 adapter
->physical_port
= adapter
->portnum
;
859 i
= adapter
->pci_read_normalize(adapter
, CRB_V2P(adapter
->portnum
));
861 adapter
->physical_port
= i
;
863 adapter
->flags
&= ~(NETXEN_NIC_MSI_ENABLED
| NETXEN_NIC_MSIX_ENABLED
);
865 netxen_set_msix_bit(pdev
, 0);
867 if (NX_IS_REVISION_P3(revision_id
)) {
868 if ((mem_len
!= NETXEN_PCI_128MB_SIZE
) &&
869 mem_len
!= NETXEN_PCI_2MB_SIZE
)
870 adapter
->msix_supported
= 0;
873 if (adapter
->msix_supported
) {
875 netxen_init_msix_entries(adapter
);
877 if (pci_enable_msix(pdev
, adapter
->msix_entries
,
878 MSIX_ENTRIES_PER_ADAPTER
))
881 adapter
->flags
|= NETXEN_NIC_MSIX_ENABLED
;
882 netxen_set_msix_bit(pdev
, 1);
883 dev_info(&pdev
->dev
, "using msi-x interrupts\n");
887 if (use_msi
&& !pci_enable_msi(pdev
)) {
888 adapter
->flags
|= NETXEN_NIC_MSI_ENABLED
;
889 dev_info(&pdev
->dev
, "using msi interrupts\n");
891 dev_info(&pdev
->dev
, "using legacy interrupts\n");
894 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
895 netdev
->irq
= adapter
->msix_entries
[0].vector
;
897 netdev
->irq
= pdev
->irq
;
899 err
= netxen_receive_peg_ready(adapter
);
901 goto err_out_disable_msi
;
903 init_timer(&adapter
->watchdog_timer
);
904 adapter
->watchdog_timer
.function
= &netxen_watchdog
;
905 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
906 INIT_WORK(&adapter
->watchdog_task
, netxen_watchdog_task
);
907 INIT_WORK(&adapter
->tx_timeout_task
, netxen_tx_timeout_task
);
909 err
= netxen_read_mac_addr(adapter
);
911 dev_warn(&pdev
->dev
, "failed to read mac addr\n");
913 netif_carrier_off(netdev
);
914 netif_stop_queue(netdev
);
916 if ((err
= register_netdev(netdev
))) {
917 printk(KERN_ERR
"%s: register_netdev failed port #%d"
918 " aborting\n", netxen_nic_driver_name
,
921 goto err_out_disable_msi
;
924 pci_set_drvdata(pdev
, adapter
);
926 switch (adapter
->ahw
.board_type
) {
928 dev_info(&adapter
->pdev
->dev
, "%s: GbE port initialized\n",
929 adapter
->netdev
->name
);
931 case NETXEN_NIC_XGBE
:
932 dev_info(&adapter
->pdev
->dev
, "%s: XGbE port initialized\n",
933 adapter
->netdev
->name
);
940 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
941 pci_disable_msix(pdev
);
942 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
943 pci_disable_msi(pdev
);
945 err_out_free_offload
:
947 netxen_free_adapter_offload(adapter
);
964 pci_release_regions(pdev
);
966 err_out_disable_pdev
:
967 pci_set_drvdata(pdev
, NULL
);
968 pci_disable_device(pdev
);
972 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
)
974 struct netxen_adapter
*adapter
;
975 struct net_device
*netdev
;
977 adapter
= pci_get_drvdata(pdev
);
981 netdev
= adapter
->netdev
;
983 unregister_netdev(netdev
);
985 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
986 netxen_free_hw_resources(adapter
);
987 netxen_release_rx_buffers(adapter
);
988 netxen_free_sw_resources(adapter
);
990 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
991 netxen_p3_free_mac_list(adapter
);
994 if (adapter
->portnum
== 0)
995 netxen_free_adapter_offload(adapter
);
998 free_irq(adapter
->irq
, adapter
);
1000 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
1001 pci_disable_msix(pdev
);
1002 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
1003 pci_disable_msi(pdev
);
1005 iounmap(adapter
->ahw
.db_base
);
1006 iounmap(adapter
->ahw
.pci_base0
);
1007 iounmap(adapter
->ahw
.pci_base1
);
1008 iounmap(adapter
->ahw
.pci_base2
);
1010 pci_release_regions(pdev
);
1011 pci_disable_device(pdev
);
1012 pci_set_drvdata(pdev
, NULL
);
1014 free_netdev(netdev
);
1018 * Called when a network interface is made active
1019 * @returns 0 on success, negative value on failure
1021 static int netxen_nic_open(struct net_device
*netdev
)
1023 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1026 irq_handler_t handler
;
1027 unsigned long flags
= IRQF_SAMPLE_RANDOM
;
1029 if (adapter
->driver_mismatch
)
1032 if (adapter
->is_up
!= NETXEN_ADAPTER_UP_MAGIC
) {
1033 err
= netxen_init_firmware(adapter
);
1035 printk(KERN_ERR
"Failed to init firmware\n");
1039 if (adapter
->fw_major
< 4)
1040 adapter
->max_rds_rings
= 3;
1042 adapter
->max_rds_rings
= 2;
1044 err
= netxen_alloc_sw_resources(adapter
);
1046 printk(KERN_ERR
"%s: Error in setting sw resources\n",
1051 netxen_nic_clear_stats(adapter
);
1053 err
= netxen_alloc_hw_resources(adapter
);
1055 printk(KERN_ERR
"%s: Error in setting hw resources\n",
1057 goto err_out_free_sw
;
1060 if ((adapter
->msi_mode
!= MSI_MODE_MULTIFUNC
) ||
1061 (adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
)) {
1062 printk(KERN_ERR
"%s: Firmware interrupt scheme is "
1063 "incompatible with driver\n",
1065 adapter
->driver_mismatch
= 1;
1066 goto err_out_free_hw
;
1069 if (adapter
->fw_major
< 4) {
1070 adapter
->crb_addr_cmd_producer
=
1071 crb_cmd_producer
[adapter
->portnum
];
1072 adapter
->crb_addr_cmd_consumer
=
1073 crb_cmd_consumer
[adapter
->portnum
];
1075 netxen_nic_update_cmd_producer(adapter
, 0);
1076 netxen_nic_update_cmd_consumer(adapter
, 0);
1079 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1080 for (ring
= 0; ring
< adapter
->max_rds_rings
; ring
++)
1081 netxen_post_rx_buffers(adapter
, ctx
, ring
);
1083 if (NETXEN_IS_MSI_FAMILY(adapter
))
1084 handler
= netxen_msi_intr
;
1086 flags
|= IRQF_SHARED
;
1087 handler
= netxen_intr
;
1089 adapter
->irq
= netdev
->irq
;
1090 err
= request_irq(adapter
->irq
, handler
,
1091 flags
, netdev
->name
, adapter
);
1093 printk(KERN_ERR
"request_irq failed with: %d\n", err
);
1094 goto err_out_free_rxbuf
;
1097 adapter
->is_up
= NETXEN_ADAPTER_UP_MAGIC
;
1100 /* Done here again so that even if phantom sw overwrote it,
1102 err
= adapter
->init_port(adapter
, adapter
->physical_port
);
1104 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
1105 netxen_nic_driver_name
, adapter
->portnum
);
1106 goto err_out_free_irq
;
1108 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
1110 netxen_nic_set_link_parameters(adapter
);
1112 netxen_set_multicast_list(netdev
);
1113 if (adapter
->set_mtu
)
1114 adapter
->set_mtu(adapter
, netdev
->mtu
);
1116 adapter
->ahw
.linkup
= 0;
1117 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1119 napi_enable(&adapter
->napi
);
1120 netxen_nic_enable_int(adapter
);
1122 netif_start_queue(netdev
);
1127 free_irq(adapter
->irq
, adapter
);
1129 netxen_release_rx_buffers(adapter
);
1131 netxen_free_hw_resources(adapter
);
1133 netxen_free_sw_resources(adapter
);
1138 * netxen_nic_close - Disables a network interface entry point
1140 static int netxen_nic_close(struct net_device
*netdev
)
1142 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1144 netif_carrier_off(netdev
);
1145 netif_stop_queue(netdev
);
1146 napi_disable(&adapter
->napi
);
1148 if (adapter
->stop_port
)
1149 adapter
->stop_port(adapter
);
1151 netxen_nic_disable_int(adapter
);
1153 netxen_release_tx_buffers(adapter
);
1155 FLUSH_SCHEDULED_WORK();
1156 del_timer_sync(&adapter
->watchdog_timer
);
1161 static bool netxen_tso_check(struct net_device
*netdev
,
1162 struct cmd_desc_type0
*desc
, struct sk_buff
*skb
)
1165 u8 opcode
= TX_ETHER_PKT
;
1167 if ((netdev
->features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) &&
1168 skb_shinfo(skb
)->gso_size
> 0) {
1170 desc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
1171 desc
->total_hdr_length
=
1172 skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1174 opcode
= (skb
->protocol
== htons(ETH_P_IPV6
)) ?
1175 TX_TCP_LSO6
: TX_TCP_LSO
;
1178 } else if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
1181 if (skb
->protocol
== htons(ETH_P_IP
)) {
1182 l4proto
= ip_hdr(skb
)->protocol
;
1184 if (l4proto
== IPPROTO_TCP
)
1185 opcode
= TX_TCP_PKT
;
1186 else if(l4proto
== IPPROTO_UDP
)
1187 opcode
= TX_UDP_PKT
;
1188 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
1189 l4proto
= ipv6_hdr(skb
)->nexthdr
;
1191 if (l4proto
== IPPROTO_TCP
)
1192 opcode
= TX_TCPV6_PKT
;
1193 else if(l4proto
== IPPROTO_UDP
)
1194 opcode
= TX_UDPV6_PKT
;
1197 desc
->tcp_hdr_offset
= skb_transport_offset(skb
);
1198 desc
->ip_hdr_offset
= skb_network_offset(skb
);
1199 netxen_set_tx_flags_opcode(desc
, 0, opcode
);
1203 static int netxen_nic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
1205 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1206 struct netxen_hardware_context
*hw
= &adapter
->ahw
;
1207 unsigned int first_seg_len
= skb
->len
- skb
->data_len
;
1208 struct netxen_cmd_buffer
*pbuf
;
1209 struct netxen_skb_frag
*buffrag
;
1210 struct cmd_desc_type0
*hwdesc
;
1213 u32 producer
, consumer
;
1214 int frag_count
, no_of_desc
;
1215 u32 num_txd
= adapter
->max_tx_desc_count
;
1216 bool is_tso
= false;
1218 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
1220 /* There 4 fragments per descriptor */
1221 no_of_desc
= (frag_count
+ 3) >> 2;
1223 producer
= adapter
->cmd_producer
;
1225 consumer
= adapter
->last_cmd_consumer
;
1226 if ((no_of_desc
+2) > find_diff_among(producer
, consumer
, num_txd
)) {
1227 netif_stop_queue(netdev
);
1229 return NETDEV_TX_BUSY
;
1232 /* Copy the descriptors into the hardware */
1233 hwdesc
= &hw
->cmd_desc_head
[producer
];
1234 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1235 /* Take skb->data itself */
1236 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1238 is_tso
= netxen_tso_check(netdev
, hwdesc
, skb
);
1241 pbuf
->frag_count
= frag_count
;
1242 buffrag
= &pbuf
->frag_array
[0];
1243 buffrag
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, first_seg_len
,
1245 buffrag
->length
= first_seg_len
;
1246 netxen_set_tx_frags_len(hwdesc
, frag_count
, skb
->len
);
1247 netxen_set_tx_port(hwdesc
, adapter
->portnum
);
1249 hwdesc
->buffer1_length
= cpu_to_le16(first_seg_len
);
1250 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
1252 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
1253 struct skb_frag_struct
*frag
;
1255 unsigned long offset
;
1256 dma_addr_t temp_dma
;
1258 /* move to next desc. if there is a need */
1259 if ((i
& 0x3) == 0) {
1261 producer
= get_next_index(producer
, num_txd
);
1262 hwdesc
= &hw
->cmd_desc_head
[producer
];
1263 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1264 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1267 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1269 offset
= frag
->page_offset
;
1272 temp_dma
= pci_map_page(adapter
->pdev
, frag
->page
, offset
,
1273 len
, PCI_DMA_TODEVICE
);
1276 buffrag
->dma
= temp_dma
;
1277 buffrag
->length
= temp_len
;
1281 hwdesc
->buffer1_length
= cpu_to_le16(temp_len
);
1282 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1285 hwdesc
->buffer2_length
= cpu_to_le16(temp_len
);
1286 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1289 hwdesc
->buffer3_length
= cpu_to_le16(temp_len
);
1290 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1293 hwdesc
->buffer4_length
= cpu_to_le16(temp_len
);
1294 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1299 producer
= get_next_index(producer
, num_txd
);
1301 /* For LSO, we need to copy the MAC/IP/TCP headers into
1302 * the descriptor ring
1305 int hdr_len
, first_hdr_len
, more_hdr
;
1306 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1307 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1308 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1311 first_hdr_len
= hdr_len
;
1314 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1315 hwdesc
= &hw
->cmd_desc_head
[producer
];
1316 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1319 /* copy the first 64 bytes */
1320 memcpy(((void *)hwdesc
) + 2,
1321 (void *)(skb
->data
), first_hdr_len
);
1322 producer
= get_next_index(producer
, num_txd
);
1325 hwdesc
= &hw
->cmd_desc_head
[producer
];
1326 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1328 /* copy the next 64 bytes - should be enough except
1329 * for pathological case
1331 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1335 producer
= get_next_index(producer
, num_txd
);
1339 adapter
->cmd_producer
= producer
;
1340 adapter
->stats
.txbytes
+= skb
->len
;
1342 netxen_nic_update_cmd_producer(adapter
, adapter
->cmd_producer
);
1344 adapter
->stats
.xmitcalled
++;
1345 netdev
->trans_start
= jiffies
;
1347 return NETDEV_TX_OK
;
1350 static int netxen_nic_check_temp(struct netxen_adapter
*adapter
)
1352 struct net_device
*netdev
= adapter
->netdev
;
1353 uint32_t temp
, temp_state
, temp_val
;
1356 temp
= adapter
->pci_read_normalize(adapter
, CRB_TEMP_STATE
);
1358 temp_state
= nx_get_temp_state(temp
);
1359 temp_val
= nx_get_temp_val(temp
);
1361 if (temp_state
== NX_TEMP_PANIC
) {
1363 "%s: Device temperature %d degrees C exceeds"
1364 " maximum allowed. Hardware has been shut down.\n",
1365 netxen_nic_driver_name
, temp_val
);
1367 netif_carrier_off(netdev
);
1368 netif_stop_queue(netdev
);
1370 } else if (temp_state
== NX_TEMP_WARN
) {
1371 if (adapter
->temp
== NX_TEMP_NORMAL
) {
1373 "%s: Device temperature %d degrees C "
1374 "exceeds operating range."
1375 " Immediate action needed.\n",
1376 netxen_nic_driver_name
, temp_val
);
1379 if (adapter
->temp
== NX_TEMP_WARN
) {
1381 "%s: Device temperature is now %d degrees C"
1382 " in normal range.\n", netxen_nic_driver_name
,
1386 adapter
->temp
= temp_state
;
1390 static void netxen_nic_handle_phy_intr(struct netxen_adapter
*adapter
)
1392 struct net_device
*netdev
= adapter
->netdev
;
1393 u32 val
, port
, linkup
;
1395 port
= adapter
->physical_port
;
1397 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
1398 val
= adapter
->pci_read_normalize(adapter
, CRB_XG_STATE_P3
);
1399 val
= XG_LINK_STATE_P3(adapter
->ahw
.pci_func
, val
);
1400 linkup
= (val
== XG_LINK_UP_P3
);
1402 val
= adapter
->pci_read_normalize(adapter
, CRB_XG_STATE
);
1403 if (adapter
->ahw
.board_type
== NETXEN_NIC_GBE
)
1404 linkup
= (val
>> port
) & 1;
1406 val
= (val
>> port
*8) & 0xff;
1407 linkup
= (val
== XG_LINK_UP
);
1411 if (adapter
->ahw
.linkup
&& !linkup
) {
1412 printk(KERN_INFO
"%s: %s NIC Link is down\n",
1413 netxen_nic_driver_name
, netdev
->name
);
1414 adapter
->ahw
.linkup
= 0;
1415 if (netif_running(netdev
)) {
1416 netif_carrier_off(netdev
);
1417 netif_stop_queue(netdev
);
1420 netxen_nic_set_link_parameters(adapter
);
1421 } else if (!adapter
->ahw
.linkup
&& linkup
) {
1422 printk(KERN_INFO
"%s: %s NIC Link is up\n",
1423 netxen_nic_driver_name
, netdev
->name
);
1424 adapter
->ahw
.linkup
= 1;
1425 if (netif_running(netdev
)) {
1426 netif_carrier_on(netdev
);
1427 netif_wake_queue(netdev
);
1430 netxen_nic_set_link_parameters(adapter
);
1434 static void netxen_watchdog(unsigned long v
)
1436 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1438 SCHEDULE_WORK(&adapter
->watchdog_task
);
1441 void netxen_watchdog_task(struct work_struct
*work
)
1443 struct netxen_adapter
*adapter
=
1444 container_of(work
, struct netxen_adapter
, watchdog_task
);
1446 if ((adapter
->portnum
== 0) && netxen_nic_check_temp(adapter
))
1449 netxen_nic_handle_phy_intr(adapter
);
1451 if (netif_running(adapter
->netdev
))
1452 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1455 static void netxen_tx_timeout(struct net_device
*netdev
)
1457 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1458 netdev_priv(netdev
);
1459 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1462 static void netxen_tx_timeout_task(struct work_struct
*work
)
1464 struct netxen_adapter
*adapter
=
1465 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1467 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1468 netxen_nic_driver_name
, adapter
->netdev
->name
);
1470 netxen_nic_disable_int(adapter
);
1471 napi_disable(&adapter
->napi
);
1473 adapter
->netdev
->trans_start
= jiffies
;
1475 napi_enable(&adapter
->napi
);
1476 netxen_nic_enable_int(adapter
);
1477 netif_wake_queue(adapter
->netdev
);
1481 * netxen_nic_get_stats - Get System Network Statistics
1482 * @netdev: network interface device structure
1484 struct net_device_stats
*netxen_nic_get_stats(struct net_device
*netdev
)
1486 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1487 struct net_device_stats
*stats
= &adapter
->net_stats
;
1489 memset(stats
, 0, sizeof(*stats
));
1491 /* total packets received */
1492 stats
->rx_packets
= adapter
->stats
.no_rcv
;
1493 /* total packets transmitted */
1494 stats
->tx_packets
= adapter
->stats
.xmitedframes
+
1495 adapter
->stats
.xmitfinished
;
1496 /* total bytes received */
1497 stats
->rx_bytes
= adapter
->stats
.rxbytes
;
1498 /* total bytes transmitted */
1499 stats
->tx_bytes
= adapter
->stats
.txbytes
;
1500 /* bad packets received */
1501 stats
->rx_errors
= adapter
->stats
.rcvdbadskb
;
1502 /* packet transmit problems */
1503 stats
->tx_errors
= adapter
->stats
.nocmddescriptor
;
1504 /* no space in linux buffers */
1505 stats
->rx_dropped
= adapter
->stats
.rxdropped
;
1506 /* no space available in linux */
1507 stats
->tx_dropped
= adapter
->stats
.txdropped
;
1512 static irqreturn_t
netxen_intr(int irq
, void *data
)
1514 struct netxen_adapter
*adapter
= data
;
1517 status
= adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1519 if (!(status
& adapter
->legacy_intr
.int_vec_bit
))
1522 if (adapter
->ahw
.revision_id
>= NX_P3_B1
) {
1523 /* check interrupt state machine, to be sure */
1524 status
= adapter
->pci_read_immediate(adapter
,
1526 if (!ISR_LEGACY_INT_TRIGGERED(status
))
1530 unsigned long our_int
= 0;
1532 our_int
= adapter
->pci_read_normalize(adapter
, CRB_INT_VECTOR
);
1534 /* not our interrupt */
1535 if (!test_and_clear_bit((7 + adapter
->portnum
), &our_int
))
1538 /* claim interrupt */
1539 adapter
->pci_write_normalize(adapter
,
1540 CRB_INT_VECTOR
, (our_int
& 0xffffffff));
1543 /* clear interrupt */
1544 if (adapter
->fw_major
< 4)
1545 netxen_nic_disable_int(adapter
);
1547 adapter
->pci_write_immediate(adapter
,
1548 adapter
->legacy_intr
.tgt_status_reg
,
1550 /* read twice to ensure write is flushed */
1551 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1552 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1554 napi_schedule(&adapter
->napi
);
1559 static irqreturn_t
netxen_msi_intr(int irq
, void *data
)
1561 struct netxen_adapter
*adapter
= data
;
1563 /* clear interrupt */
1564 adapter
->pci_write_immediate(adapter
,
1565 msi_tgt_status
[adapter
->ahw
.pci_func
], 0xffffffff);
1567 napi_schedule(&adapter
->napi
);
1571 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
)
1573 struct netxen_adapter
*adapter
= container_of(napi
, struct netxen_adapter
, napi
);
1578 tx_complete
= netxen_process_cmd_ring(adapter
);
1581 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1583 * Fairness issue. This will give undue weight to the
1584 * receive context 0.
1588 * To avoid starvation, we give each of our receivers,
1589 * a fraction of the quota. Sometimes, it might happen that we
1590 * have enough quota to process every packet, but since all the
1591 * packets are on one context, it gets only half of the quota,
1592 * and ends up not processing it.
1594 work_done
+= netxen_process_rcv_ring(adapter
, ctx
,
1595 budget
/ MAX_RCV_CTX
);
1598 if ((work_done
< budget
) && tx_complete
) {
1599 netif_rx_complete(&adapter
->napi
);
1600 netxen_nic_enable_int(adapter
);
1606 #ifdef CONFIG_NET_POLL_CONTROLLER
1607 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1609 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1610 disable_irq(adapter
->irq
);
1611 netxen_intr(adapter
->irq
, adapter
);
1612 enable_irq(adapter
->irq
);
1616 static struct pci_driver netxen_driver
= {
1617 .name
= netxen_nic_driver_name
,
1618 .id_table
= netxen_pci_tbl
,
1619 .probe
= netxen_nic_probe
,
1620 .remove
= __devexit_p(netxen_nic_remove
)
1623 /* Driver Registration on NetXen card */
1625 static int __init
netxen_init_module(void)
1627 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == NULL
)
1630 return pci_register_driver(&netxen_driver
);
1633 module_init(netxen_init_module
);
1635 static void __exit
netxen_exit_module(void)
1637 pci_unregister_driver(&netxen_driver
);
1638 destroy_workqueue(netxen_workq
);
1641 module_exit(netxen_exit_module
);