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>
44 #include <linux/ipv6.h>
46 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
47 MODULE_LICENSE("GPL");
48 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID
);
50 char netxen_nic_driver_name
[] = "netxen_nic";
51 static char netxen_nic_driver_string
[] = "NetXen Network Driver version "
52 NETXEN_NIC_LINUX_VERSIONID
;
54 static int port_mode
= NETXEN_PORT_MODE_AUTO_NEG
;
56 /* Default to restricted 1G auto-neg mode */
57 static int wol_port_mode
= 5;
59 static int use_msi
= 1;
61 static int use_msi_x
= 1;
63 /* Local functions to NetXen NIC driver */
64 static int __devinit
netxen_nic_probe(struct pci_dev
*pdev
,
65 const struct pci_device_id
*ent
);
66 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
);
67 static int netxen_nic_open(struct net_device
*netdev
);
68 static int netxen_nic_close(struct net_device
*netdev
);
69 static int netxen_nic_xmit_frame(struct sk_buff
*, struct net_device
*);
70 static void netxen_tx_timeout(struct net_device
*netdev
);
71 static void netxen_tx_timeout_task(struct work_struct
*work
);
72 static void netxen_watchdog(unsigned long);
73 static int netxen_nic_poll(struct napi_struct
*napi
, 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
);
78 static irqreturn_t
netxen_msi_intr(int irq
, void *data
);
80 /* PCI Device ID Table */
81 #define ENTRY(device) \
82 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
83 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
85 static struct pci_device_id netxen_pci_tbl
[] __devinitdata
= {
86 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR
),
87 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4
),
88 ENTRY(PCI_DEVICE_ID_NX2031_4GCU
),
89 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ
),
90 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ
),
91 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT
),
92 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2
),
93 ENTRY(PCI_DEVICE_ID_NX3031
),
97 MODULE_DEVICE_TABLE(pci
, netxen_pci_tbl
);
100 * In netxen_nic_down(), we must wait for any pending callback requests into
101 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
102 * reenabled right after it is deleted in netxen_nic_down().
103 * FLUSH_SCHEDULED_WORK() does this synchronization.
105 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
106 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
107 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
108 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
109 * linkwatch_event() to be executed which also attempts to acquire the rtnl
110 * lock thus causing a deadlock.
113 static struct workqueue_struct
*netxen_workq
;
114 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
115 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
117 static void netxen_watchdog(unsigned long);
119 static uint32_t crb_cmd_producer
[4] = {
120 CRB_CMD_PRODUCER_OFFSET
, CRB_CMD_PRODUCER_OFFSET_1
,
121 CRB_CMD_PRODUCER_OFFSET_2
, CRB_CMD_PRODUCER_OFFSET_3
125 netxen_nic_update_cmd_producer(struct netxen_adapter
*adapter
,
126 uint32_t crb_producer
)
128 adapter
->pci_write_normalize(adapter
,
129 adapter
->crb_addr_cmd_producer
, crb_producer
);
132 static uint32_t crb_cmd_consumer
[4] = {
133 CRB_CMD_CONSUMER_OFFSET
, CRB_CMD_CONSUMER_OFFSET_1
,
134 CRB_CMD_CONSUMER_OFFSET_2
, CRB_CMD_CONSUMER_OFFSET_3
138 netxen_nic_update_cmd_consumer(struct netxen_adapter
*adapter
,
141 adapter
->pci_write_normalize(adapter
,
142 adapter
->crb_addr_cmd_consumer
, crb_consumer
);
145 static uint32_t msi_tgt_status
[8] = {
146 ISR_INT_TARGET_STATUS
, ISR_INT_TARGET_STATUS_F1
,
147 ISR_INT_TARGET_STATUS_F2
, ISR_INT_TARGET_STATUS_F3
,
148 ISR_INT_TARGET_STATUS_F4
, ISR_INT_TARGET_STATUS_F5
,
149 ISR_INT_TARGET_STATUS_F6
, ISR_INT_TARGET_STATUS_F7
152 static struct netxen_legacy_intr_set legacy_intr
[] = NX_LEGACY_INTR_CONFIG
;
154 static inline void netxen_nic_disable_int(struct netxen_adapter
*adapter
)
156 adapter
->pci_write_normalize(adapter
, adapter
->crb_intr_mask
, 0);
159 static inline void netxen_nic_enable_int(struct netxen_adapter
*adapter
)
161 adapter
->pci_write_normalize(adapter
, adapter
->crb_intr_mask
, 0x1);
163 if (!NETXEN_IS_MSI_FAMILY(adapter
))
164 adapter
->pci_write_immediate(adapter
,
165 adapter
->legacy_intr
.tgt_mask_reg
, 0xfbff);
168 static int nx_set_dma_mask(struct netxen_adapter
*adapter
, uint8_t revision_id
)
170 struct pci_dev
*pdev
= adapter
->pdev
;
175 adapter
->dma_mask
= DMA_32BIT_MASK
;
177 if (revision_id
>= NX_P3_B0
) {
178 /* should go to DMA_64BIT_MASK */
179 adapter
->dma_mask
= DMA_39BIT_MASK
;
180 mask
= DMA_39BIT_MASK
;
181 } else if (revision_id
== NX_P3_A2
) {
182 adapter
->dma_mask
= DMA_39BIT_MASK
;
183 mask
= DMA_39BIT_MASK
;
184 } else if (revision_id
== NX_P2_C1
) {
185 adapter
->dma_mask
= DMA_35BIT_MASK
;
186 mask
= DMA_35BIT_MASK
;
188 adapter
->dma_mask
= DMA_32BIT_MASK
;
189 mask
= DMA_32BIT_MASK
;
190 goto set_32_bit_mask
;
194 * Consistent DMA mask is set to 32 bit because it cannot be set to
195 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
196 * come off this pool.
198 if (pci_set_dma_mask(pdev
, mask
) == 0 &&
199 pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
) == 0) {
200 adapter
->pci_using_dac
= 1;
203 #endif /* CONFIG_IA64 */
206 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
208 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
210 DPRINTK(ERR
, "No usable DMA configuration, aborting:%d\n", err
);
214 adapter
->pci_using_dac
= 0;
218 static void netxen_check_options(struct netxen_adapter
*adapter
)
220 switch (adapter
->ahw
.boardcfg
.board_type
) {
221 case NETXEN_BRDTYPE_P3_HMEZ
:
222 case NETXEN_BRDTYPE_P3_XG_LOM
:
223 case NETXEN_BRDTYPE_P3_10G_CX4
:
224 case NETXEN_BRDTYPE_P3_10G_CX4_LP
:
225 case NETXEN_BRDTYPE_P3_IMEZ
:
226 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS
:
227 case NETXEN_BRDTYPE_P3_10G_SFP_QT
:
228 case NETXEN_BRDTYPE_P3_10G_SFP_CT
:
229 case NETXEN_BRDTYPE_P3_10G_XFP
:
230 case NETXEN_BRDTYPE_P3_10000_BASE_T
:
231 adapter
->msix_supported
= !!use_msi_x
;
232 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_10G
;
235 case NETXEN_BRDTYPE_P2_SB31_10G
:
236 case NETXEN_BRDTYPE_P2_SB31_10G_CX4
:
237 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
238 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
239 adapter
->msix_supported
= 0;
240 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_10G
;
243 case NETXEN_BRDTYPE_P3_REF_QG
:
244 case NETXEN_BRDTYPE_P3_4_GB
:
245 case NETXEN_BRDTYPE_P3_4_GB_MM
:
246 adapter
->msix_supported
= !!use_msi_x
;
247 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
250 case NETXEN_BRDTYPE_P2_SB35_4G
:
251 case NETXEN_BRDTYPE_P2_SB31_2G
:
252 adapter
->msix_supported
= 0;
253 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
256 case NETXEN_BRDTYPE_P3_10G_TP
:
257 adapter
->msix_supported
= !!use_msi_x
;
258 if (adapter
->ahw
.board_type
== NETXEN_NIC_XGBE
)
259 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_10G
;
261 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
265 adapter
->msix_supported
= 0;
266 adapter
->max_rx_desc_count
= MAX_RCV_DESCRIPTORS_1G
;
268 printk(KERN_WARNING
"Unknown board type(0x%x)\n",
269 adapter
->ahw
.boardcfg
.board_type
);
273 adapter
->max_tx_desc_count
= MAX_CMD_DESCRIPTORS_HOST
;
274 adapter
->max_jumbo_rx_desc_count
= MAX_JUMBO_RCV_DESCRIPTORS
;
275 adapter
->max_lro_rx_desc_count
= MAX_LRO_RCV_DESCRIPTORS
;
277 adapter
->max_possible_rss_rings
= 1;
282 netxen_check_hw_init(struct netxen_adapter
*adapter
, int first_boot
)
286 if (first_boot
== 0x55555555) {
287 /* This is the first boot after power up */
288 adapter
->pci_write_normalize(adapter
,
289 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC
);
291 if (!NX_IS_REVISION_P2(adapter
->ahw
.revision_id
))
294 /* PCI bus master workaround */
295 adapter
->hw_read_wx(adapter
,
296 NETXEN_PCIE_REG(0x4), &first_boot
, 4);
297 if (!(first_boot
& 0x4)) {
299 adapter
->hw_write_wx(adapter
,
300 NETXEN_PCIE_REG(0x4), &first_boot
, 4);
301 adapter
->hw_read_wx(adapter
,
302 NETXEN_PCIE_REG(0x4), &first_boot
, 4);
305 /* This is the first boot after power up */
306 adapter
->hw_read_wx(adapter
,
307 NETXEN_ROMUSB_GLB_SW_RESET
, &first_boot
, 4);
308 if (first_boot
!= 0x80000f) {
309 /* clear the register for future unloads/loads */
310 adapter
->pci_write_normalize(adapter
,
311 NETXEN_CAM_RAM(0x1fc), 0);
315 /* Start P2 boot loader */
316 val
= adapter
->pci_read_normalize(adapter
,
317 NETXEN_ROMUSB_GLB_PEGTUNE_DONE
);
318 adapter
->pci_write_normalize(adapter
,
319 NETXEN_ROMUSB_GLB_PEGTUNE_DONE
, val
| 0x1);
323 val
= adapter
->pci_read_normalize(adapter
,
324 NETXEN_CAM_RAM(0x1fc));
326 if (++timeout
> 5000)
329 } while (val
== NETXEN_BDINFO_MAGIC
);
334 static void netxen_set_port_mode(struct netxen_adapter
*adapter
)
338 val
= adapter
->ahw
.boardcfg
.board_type
;
339 if ((val
== NETXEN_BRDTYPE_P3_HMEZ
) ||
340 (val
== NETXEN_BRDTYPE_P3_XG_LOM
)) {
341 if (port_mode
== NETXEN_PORT_MODE_802_3_AP
) {
342 data
= NETXEN_PORT_MODE_802_3_AP
;
343 adapter
->hw_write_wx(adapter
,
344 NETXEN_PORT_MODE_ADDR
, &data
, 4);
345 } else if (port_mode
== NETXEN_PORT_MODE_XG
) {
346 data
= NETXEN_PORT_MODE_XG
;
347 adapter
->hw_write_wx(adapter
,
348 NETXEN_PORT_MODE_ADDR
, &data
, 4);
349 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_1G
) {
350 data
= NETXEN_PORT_MODE_AUTO_NEG_1G
;
351 adapter
->hw_write_wx(adapter
,
352 NETXEN_PORT_MODE_ADDR
, &data
, 4);
353 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_XG
) {
354 data
= NETXEN_PORT_MODE_AUTO_NEG_XG
;
355 adapter
->hw_write_wx(adapter
,
356 NETXEN_PORT_MODE_ADDR
, &data
, 4);
358 data
= NETXEN_PORT_MODE_AUTO_NEG
;
359 adapter
->hw_write_wx(adapter
,
360 NETXEN_PORT_MODE_ADDR
, &data
, 4);
363 if ((wol_port_mode
!= NETXEN_PORT_MODE_802_3_AP
) &&
364 (wol_port_mode
!= NETXEN_PORT_MODE_XG
) &&
365 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_1G
) &&
366 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_XG
)) {
367 wol_port_mode
= NETXEN_PORT_MODE_AUTO_NEG
;
369 adapter
->hw_write_wx(adapter
, NETXEN_WOL_PORT_MODE
,
374 #define PCI_CAP_ID_GEN 0x10
376 static void netxen_pcie_strap_init(struct netxen_adapter
*adapter
)
383 struct pci_dev
*pdev
;
385 pdev
= adapter
->pdev
;
387 adapter
->hw_read_wx(adapter
,
388 NETXEN_PCIE_REG(PCIE_CHICKEN3
), &chicken
, 4);
389 /* clear chicken3.25:24 */
390 chicken
&= 0xFCFFFFFF;
392 * if gen1 and B0, set F1020 - if gen 2, do nothing
393 * if gen2 set to F1000
395 pos
= pci_find_capability(pdev
, PCI_CAP_ID_GEN
);
397 pci_read_config_dword(pdev
, pos
+ 0x10, &control
);
398 if ((control
& 0x000F0000) != 0x00020000) {
399 /* set chicken3.24 if gen1 */
400 chicken
|= 0x01000000;
402 printk(KERN_INFO
"%s Gen2 strapping detected\n",
403 netxen_nic_driver_name
);
406 /* set chicken3.24 if gen1 */
407 chicken
|= 0x01000000;
408 printk(KERN_INFO
"%s Gen1 strapping detected\n",
409 netxen_nic_driver_name
);
410 if (adapter
->ahw
.revision_id
== NX_P3_B0
)
416 adapter
->hw_write_wx(adapter
,
417 NETXEN_PCIE_REG(PCIE_CHICKEN3
), &chicken
, 4);
422 pdevfuncsave
= pdev
->devfn
;
423 if (pdevfuncsave
& 0x07)
426 for (i
= 0; i
< 8; i
++) {
427 pci_read_config_dword(pdev
, pos
+ 8, &control
);
428 pci_read_config_dword(pdev
, pos
+ 8, &control
);
429 pci_write_config_dword(pdev
, pos
+ 8, c8c9value
);
432 pdev
->devfn
= pdevfuncsave
;
435 static void netxen_set_msix_bit(struct pci_dev
*pdev
, int enable
)
440 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSIX
);
442 pci_read_config_dword(pdev
, pos
, &control
);
444 control
|= PCI_MSIX_FLAGS_ENABLE
;
447 pci_write_config_dword(pdev
, pos
, control
);
451 static void netxen_init_msix_entries(struct netxen_adapter
*adapter
)
455 for (i
= 0; i
< MSIX_ENTRIES_PER_ADAPTER
; i
++)
456 adapter
->msix_entries
[i
].entry
= i
;
460 netxen_read_mac_addr(struct netxen_adapter
*adapter
)
465 struct net_device
*netdev
= adapter
->netdev
;
466 struct pci_dev
*pdev
= adapter
->pdev
;
468 if (netxen_is_flash_supported(adapter
) != 0)
471 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
472 if (netxen_p3_get_mac_addr(adapter
, &mac_addr
) != 0)
475 if (netxen_get_flash_mac_addr(adapter
, &mac_addr
) != 0)
479 p
= (unsigned char *)&mac_addr
;
480 for (i
= 0; i
< 6; i
++)
481 netdev
->dev_addr
[i
] = *(p
+ 5 - i
);
483 memcpy(netdev
->perm_addr
, netdev
->dev_addr
, netdev
->addr_len
);
485 /* set station address */
487 if (!is_valid_ether_addr(netdev
->perm_addr
))
488 dev_warn(&pdev
->dev
, "Bad MAC address %pM.\n", netdev
->dev_addr
);
490 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
495 static void netxen_set_multicast_list(struct net_device
*dev
)
497 struct netxen_adapter
*adapter
= netdev_priv(dev
);
499 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
500 netxen_p3_nic_set_multi(dev
);
502 netxen_p2_nic_set_multi(dev
);
505 static const struct net_device_ops netxen_netdev_ops
= {
506 .ndo_open
= netxen_nic_open
,
507 .ndo_stop
= netxen_nic_close
,
508 .ndo_start_xmit
= netxen_nic_xmit_frame
,
509 .ndo_get_stats
= netxen_nic_get_stats
,
510 .ndo_validate_addr
= eth_validate_addr
,
511 .ndo_set_multicast_list
= netxen_set_multicast_list
,
512 .ndo_set_mac_address
= netxen_nic_set_mac
,
513 .ndo_change_mtu
= netxen_nic_change_mtu
,
514 .ndo_tx_timeout
= netxen_tx_timeout
,
515 #ifdef CONFIG_NET_POLL_CONTROLLER
516 .ndo_poll_controller
= netxen_nic_poll_controller
,
523 * The Linux system will invoke this after identifying the vendor ID and
524 * device Id in the pci_tbl supported by this module.
526 * A quad port card has one operational PCI config space, (function 0),
527 * which is used to access all four ports.
529 * This routine will initialize the adapter, and setup the global parameters
530 * along with the port's specific structure.
533 netxen_nic_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
535 struct net_device
*netdev
= NULL
;
536 struct netxen_adapter
*adapter
= NULL
;
537 void __iomem
*mem_ptr0
= NULL
;
538 void __iomem
*mem_ptr1
= NULL
;
539 void __iomem
*mem_ptr2
= NULL
;
540 unsigned long first_page_group_end
;
541 unsigned long first_page_group_start
;
544 u8 __iomem
*db_ptr
= NULL
;
545 unsigned long mem_base
, mem_len
, db_base
, db_len
, pci_len0
= 0;
547 int first_driver
, first_boot
;
549 int pci_func_id
= PCI_FUNC(pdev
->devfn
);
550 struct netxen_legacy_intr_set
*legacy_intrp
;
553 if (pci_func_id
== 0)
554 printk(KERN_INFO
"%s\n", netxen_nic_driver_string
);
556 if (pdev
->class != 0x020000) {
557 printk(KERN_DEBUG
"NetXen function %d, class %x will not "
558 "be enabled.\n",pci_func_id
, pdev
->class);
562 if (pdev
->revision
>= NX_P3_A0
&& pdev
->revision
< NX_P3_B1
) {
563 printk(KERN_WARNING
"NetXen chip revisions between 0x%x-0x%x"
564 "will not be enabled.\n",
569 if ((err
= pci_enable_device(pdev
)))
572 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
574 goto err_out_disable_pdev
;
577 if ((err
= pci_request_regions(pdev
, netxen_nic_driver_name
)))
578 goto err_out_disable_pdev
;
580 pci_set_master(pdev
);
582 netdev
= alloc_etherdev(sizeof(struct netxen_adapter
));
584 printk(KERN_ERR
"%s: Failed to allocate memory for the "
585 "device block.Check system memory resource"
586 " usage.\n", netxen_nic_driver_name
);
587 goto err_out_free_res
;
590 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
592 adapter
= netdev_priv(netdev
);
593 adapter
->netdev
= netdev
;
594 adapter
->pdev
= pdev
;
595 adapter
->ahw
.pci_func
= pci_func_id
;
597 revision_id
= pdev
->revision
;
598 adapter
->ahw
.revision_id
= revision_id
;
600 err
= nx_set_dma_mask(adapter
, revision_id
);
602 goto err_out_free_netdev
;
604 rwlock_init(&adapter
->adapter_lock
);
605 adapter
->ahw
.qdr_sn_window
= -1;
606 adapter
->ahw
.ddr_mn_window
= -1;
608 /* remap phys address */
609 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
610 mem_len
= pci_resource_len(pdev
, 0);
613 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_128M
;
614 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_128M
;
615 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_128M
;
616 adapter
->pci_write_immediate
= netxen_nic_pci_write_immediate_128M
;
617 adapter
->pci_read_normalize
= netxen_nic_pci_read_normalize_128M
;
618 adapter
->pci_write_normalize
= netxen_nic_pci_write_normalize_128M
;
619 adapter
->pci_set_window
= netxen_nic_pci_set_window_128M
;
620 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_128M
;
621 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_128M
;
623 /* 128 Meg of memory */
624 if (mem_len
== NETXEN_PCI_128MB_SIZE
) {
625 mem_ptr0
= ioremap(mem_base
, FIRST_PAGE_GROUP_SIZE
);
626 mem_ptr1
= ioremap(mem_base
+ SECOND_PAGE_GROUP_START
,
627 SECOND_PAGE_GROUP_SIZE
);
628 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
,
629 THIRD_PAGE_GROUP_SIZE
);
630 first_page_group_start
= FIRST_PAGE_GROUP_START
;
631 first_page_group_end
= FIRST_PAGE_GROUP_END
;
632 } else if (mem_len
== NETXEN_PCI_32MB_SIZE
) {
633 mem_ptr1
= ioremap(mem_base
, SECOND_PAGE_GROUP_SIZE
);
634 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
-
635 SECOND_PAGE_GROUP_START
, THIRD_PAGE_GROUP_SIZE
);
636 first_page_group_start
= 0;
637 first_page_group_end
= 0;
638 } else if (mem_len
== NETXEN_PCI_2MB_SIZE
) {
639 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_2M
;
640 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_2M
;
641 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_2M
;
642 adapter
->pci_write_immediate
=
643 netxen_nic_pci_write_immediate_2M
;
644 adapter
->pci_read_normalize
= netxen_nic_pci_read_normalize_2M
;
645 adapter
->pci_write_normalize
=
646 netxen_nic_pci_write_normalize_2M
;
647 adapter
->pci_set_window
= netxen_nic_pci_set_window_2M
;
648 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_2M
;
649 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_2M
;
651 mem_ptr0
= ioremap(mem_base
, mem_len
);
653 first_page_group_start
= 0;
654 first_page_group_end
= 0;
656 adapter
->ahw
.ddr_mn_window
= 0;
657 adapter
->ahw
.qdr_sn_window
= 0;
659 adapter
->ahw
.mn_win_crb
= 0x100000 + PCIX_MN_WINDOW
+
660 (pci_func_id
* 0x20);
661 adapter
->ahw
.ms_win_crb
= 0x100000 + PCIX_SN_WINDOW
;
663 adapter
->ahw
.ms_win_crb
+= (pci_func_id
* 0x20);
665 adapter
->ahw
.ms_win_crb
+=
666 0xA0 + ((pci_func_id
- 4) * 0x10);
669 goto err_out_free_netdev
;
672 dev_info(&pdev
->dev
, "%dMB memory map\n", (int)(mem_len
>>20));
674 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
675 db_len
= pci_resource_len(pdev
, 4);
678 printk(KERN_ERR
"%s: doorbell is disabled\n",
679 netxen_nic_driver_name
);
681 goto err_out_iounmap
;
683 DPRINTK(INFO
, "doorbell ioremap from %lx a size of %lx\n", db_base
,
686 db_ptr
= ioremap(db_base
, NETXEN_DB_MAPSIZE_BYTES
);
688 printk(KERN_ERR
"%s: Failed to allocate doorbell map.",
689 netxen_nic_driver_name
);
691 goto err_out_iounmap
;
693 DPRINTK(INFO
, "doorbell ioremaped at %p\n", db_ptr
);
695 adapter
->ahw
.pci_base0
= mem_ptr0
;
696 adapter
->ahw
.pci_len0
= pci_len0
;
697 adapter
->ahw
.first_page_group_start
= first_page_group_start
;
698 adapter
->ahw
.first_page_group_end
= first_page_group_end
;
699 adapter
->ahw
.pci_base1
= mem_ptr1
;
700 adapter
->ahw
.pci_base2
= mem_ptr2
;
701 adapter
->ahw
.db_base
= db_ptr
;
702 adapter
->ahw
.db_len
= db_len
;
704 netif_napi_add(netdev
, &adapter
->napi
,
705 netxen_nic_poll
, NETXEN_NETDEV_WEIGHT
);
707 if (revision_id
>= NX_P3_B0
)
708 legacy_intrp
= &legacy_intr
[pci_func_id
];
710 legacy_intrp
= &legacy_intr
[0];
712 adapter
->legacy_intr
.int_vec_bit
= legacy_intrp
->int_vec_bit
;
713 adapter
->legacy_intr
.tgt_status_reg
= legacy_intrp
->tgt_status_reg
;
714 adapter
->legacy_intr
.tgt_mask_reg
= legacy_intrp
->tgt_mask_reg
;
715 adapter
->legacy_intr
.pci_int_reg
= legacy_intrp
->pci_int_reg
;
717 /* this will be read from FW later */
718 adapter
->intr_scheme
= -1;
719 adapter
->msi_mode
= -1;
721 /* This will be reset for mezz cards */
722 adapter
->portnum
= pci_func_id
;
723 adapter
->status
&= ~NETXEN_NETDEV_STATUS
;
724 adapter
->rx_csum
= 1;
725 adapter
->mc_enabled
= 0;
726 if (NX_IS_REVISION_P3(revision_id
))
727 adapter
->max_mc_count
= 38;
729 adapter
->max_mc_count
= 16;
731 netdev
->netdev_ops
= &netxen_netdev_ops
;
732 netdev
->watchdog_timeo
= 2*HZ
;
734 netxen_nic_change_mtu(netdev
, netdev
->mtu
);
736 SET_ETHTOOL_OPS(netdev
, &netxen_nic_ethtool_ops
);
738 netdev
->features
|= (NETIF_F_SG
| NETIF_F_IP_CSUM
| NETIF_F_TSO
);
739 netdev
->vlan_features
|= (NETIF_F_SG
| NETIF_F_IP_CSUM
| NETIF_F_TSO
);
741 if (NX_IS_REVISION_P3(revision_id
)) {
742 netdev
->features
|= (NETIF_F_IPV6_CSUM
| NETIF_F_TSO6
);
743 netdev
->vlan_features
|= (NETIF_F_IPV6_CSUM
| NETIF_F_TSO6
);
746 if (adapter
->pci_using_dac
) {
747 netdev
->features
|= NETIF_F_HIGHDMA
;
748 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
752 * Set the CRB window to invalid. If any register in window 0 is
753 * accessed it should set the window to 0 and then reset it to 1.
755 adapter
->curr_window
= 255;
757 if (netxen_nic_get_board_info(adapter
) != 0) {
758 printk("%s: Error getting board config info.\n",
759 netxen_nic_driver_name
);
761 goto err_out_iounmap
;
764 netxen_initialize_adapter_ops(adapter
);
766 /* Mezz cards have PCI function 0,2,3 enabled */
767 switch (adapter
->ahw
.boardcfg
.board_type
) {
768 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
769 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
770 if (pci_func_id
>= 2)
771 adapter
->portnum
= pci_func_id
- 2;
778 * This call will setup various max rx/tx counts.
779 * It must be done before any buffer/ring allocations.
781 netxen_check_options(adapter
);
784 if (NX_IS_REVISION_P3(revision_id
)) {
785 if (adapter
->ahw
.pci_func
== 0)
788 if (adapter
->portnum
== 0)
793 first_boot
= adapter
->pci_read_normalize(adapter
,
794 NETXEN_CAM_RAM(0x1fc));
796 err
= netxen_check_hw_init(adapter
, first_boot
);
798 printk(KERN_ERR
"%s: error in init HW init sequence\n",
799 netxen_nic_driver_name
);
800 goto err_out_iounmap
;
803 if (NX_IS_REVISION_P3(revision_id
))
804 netxen_set_port_mode(adapter
);
806 if (first_boot
!= 0x55555555) {
807 adapter
->pci_write_normalize(adapter
,
808 CRB_CMDPEG_STATE
, 0);
809 netxen_pinit_from_rom(adapter
, 0);
812 netxen_load_firmware(adapter
);
814 if (NX_IS_REVISION_P3(revision_id
))
815 netxen_pcie_strap_init(adapter
);
817 if (NX_IS_REVISION_P2(revision_id
)) {
819 /* Initialize multicast addr pool owners */
821 if (adapter
->ahw
.board_type
== NETXEN_NIC_XGBE
)
823 netxen_crb_writelit_adapter(adapter
,
824 NETXEN_MAC_ADDR_CNTL_REG
, val
);
828 err
= netxen_initialize_adapter_offload(adapter
);
830 goto err_out_iounmap
;
833 * Tell the hardware our version number.
835 i
= (_NETXEN_NIC_LINUX_MAJOR
<< 16)
836 | ((_NETXEN_NIC_LINUX_MINOR
<< 8))
837 | (_NETXEN_NIC_LINUX_SUBVERSION
);
838 adapter
->pci_write_normalize(adapter
, CRB_DRIVER_VERSION
, i
);
840 /* Handshake with the card before we register the devices. */
841 err
= netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
843 goto err_out_free_offload
;
847 netxen_nic_flash_print(adapter
);
849 if (NX_IS_REVISION_P3(revision_id
)) {
850 adapter
->hw_read_wx(adapter
,
851 NETXEN_MIU_MN_CONTROL
, &val
, 4);
852 adapter
->ahw
.cut_through
= (val
& 0x4) ? 1 : 0;
853 dev_info(&pdev
->dev
, "firmware running in %s mode\n",
854 adapter
->ahw
.cut_through
? "cut through" : "legacy");
858 * See if the firmware gave us a virtual-physical port mapping.
860 adapter
->physical_port
= adapter
->portnum
;
861 i
= adapter
->pci_read_normalize(adapter
, CRB_V2P(adapter
->portnum
));
863 adapter
->physical_port
= i
;
865 adapter
->flags
&= ~(NETXEN_NIC_MSI_ENABLED
| NETXEN_NIC_MSIX_ENABLED
);
867 netxen_set_msix_bit(pdev
, 0);
869 if (NX_IS_REVISION_P3(revision_id
)) {
870 if ((mem_len
!= NETXEN_PCI_128MB_SIZE
) &&
871 mem_len
!= NETXEN_PCI_2MB_SIZE
)
872 adapter
->msix_supported
= 0;
875 if (adapter
->msix_supported
) {
877 netxen_init_msix_entries(adapter
);
879 if (pci_enable_msix(pdev
, adapter
->msix_entries
,
880 MSIX_ENTRIES_PER_ADAPTER
))
883 adapter
->flags
|= NETXEN_NIC_MSIX_ENABLED
;
884 netxen_set_msix_bit(pdev
, 1);
885 dev_info(&pdev
->dev
, "using msi-x interrupts\n");
889 if (use_msi
&& !pci_enable_msi(pdev
)) {
890 adapter
->flags
|= NETXEN_NIC_MSI_ENABLED
;
891 dev_info(&pdev
->dev
, "using msi interrupts\n");
893 dev_info(&pdev
->dev
, "using legacy interrupts\n");
896 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
897 netdev
->irq
= adapter
->msix_entries
[0].vector
;
899 netdev
->irq
= pdev
->irq
;
901 err
= netxen_receive_peg_ready(adapter
);
903 goto err_out_disable_msi
;
905 init_timer(&adapter
->watchdog_timer
);
906 adapter
->watchdog_timer
.function
= &netxen_watchdog
;
907 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
908 INIT_WORK(&adapter
->watchdog_task
, netxen_watchdog_task
);
909 INIT_WORK(&adapter
->tx_timeout_task
, netxen_tx_timeout_task
);
911 err
= netxen_read_mac_addr(adapter
);
913 dev_warn(&pdev
->dev
, "failed to read mac addr\n");
915 netif_carrier_off(netdev
);
916 netif_stop_queue(netdev
);
918 if ((err
= register_netdev(netdev
))) {
919 printk(KERN_ERR
"%s: register_netdev failed port #%d"
920 " aborting\n", netxen_nic_driver_name
,
923 goto err_out_disable_msi
;
926 pci_set_drvdata(pdev
, adapter
);
928 switch (adapter
->ahw
.board_type
) {
930 dev_info(&adapter
->pdev
->dev
, "%s: GbE port initialized\n",
931 adapter
->netdev
->name
);
933 case NETXEN_NIC_XGBE
:
934 dev_info(&adapter
->pdev
->dev
, "%s: XGbE port initialized\n",
935 adapter
->netdev
->name
);
942 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
943 pci_disable_msix(pdev
);
944 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
945 pci_disable_msi(pdev
);
947 err_out_free_offload
:
949 netxen_free_adapter_offload(adapter
);
966 pci_release_regions(pdev
);
968 err_out_disable_pdev
:
969 pci_set_drvdata(pdev
, NULL
);
970 pci_disable_device(pdev
);
974 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
)
976 struct netxen_adapter
*adapter
;
977 struct net_device
*netdev
;
979 adapter
= pci_get_drvdata(pdev
);
983 netdev
= adapter
->netdev
;
985 unregister_netdev(netdev
);
987 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
988 netxen_free_hw_resources(adapter
);
989 netxen_release_rx_buffers(adapter
);
990 netxen_free_sw_resources(adapter
);
992 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
993 netxen_p3_free_mac_list(adapter
);
996 if (adapter
->portnum
== 0)
997 netxen_free_adapter_offload(adapter
);
1000 free_irq(adapter
->irq
, adapter
);
1002 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
1003 pci_disable_msix(pdev
);
1004 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
1005 pci_disable_msi(pdev
);
1007 iounmap(adapter
->ahw
.db_base
);
1008 iounmap(adapter
->ahw
.pci_base0
);
1009 if (adapter
->ahw
.pci_base1
!= NULL
)
1010 iounmap(adapter
->ahw
.pci_base1
);
1011 if (adapter
->ahw
.pci_base2
!= NULL
)
1012 iounmap(adapter
->ahw
.pci_base2
);
1014 pci_release_regions(pdev
);
1015 pci_disable_device(pdev
);
1016 pci_set_drvdata(pdev
, NULL
);
1018 free_netdev(netdev
);
1022 * Called when a network interface is made active
1023 * @returns 0 on success, negative value on failure
1025 static int netxen_nic_open(struct net_device
*netdev
)
1027 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1030 irq_handler_t handler
;
1031 unsigned long flags
= IRQF_SAMPLE_RANDOM
;
1033 if (adapter
->driver_mismatch
)
1036 if (adapter
->is_up
!= NETXEN_ADAPTER_UP_MAGIC
) {
1037 err
= netxen_init_firmware(adapter
);
1039 printk(KERN_ERR
"Failed to init firmware\n");
1043 if (adapter
->fw_major
< 4)
1044 adapter
->max_rds_rings
= 3;
1046 adapter
->max_rds_rings
= 2;
1048 err
= netxen_alloc_sw_resources(adapter
);
1050 printk(KERN_ERR
"%s: Error in setting sw resources\n",
1055 netxen_nic_clear_stats(adapter
);
1057 err
= netxen_alloc_hw_resources(adapter
);
1059 printk(KERN_ERR
"%s: Error in setting hw resources\n",
1061 goto err_out_free_sw
;
1064 if ((adapter
->msi_mode
!= MSI_MODE_MULTIFUNC
) ||
1065 (adapter
->intr_scheme
!= INTR_SCHEME_PERPORT
)) {
1066 printk(KERN_ERR
"%s: Firmware interrupt scheme is "
1067 "incompatible with driver\n",
1069 adapter
->driver_mismatch
= 1;
1070 goto err_out_free_hw
;
1073 if (adapter
->fw_major
< 4) {
1074 adapter
->crb_addr_cmd_producer
=
1075 crb_cmd_producer
[adapter
->portnum
];
1076 adapter
->crb_addr_cmd_consumer
=
1077 crb_cmd_consumer
[adapter
->portnum
];
1079 netxen_nic_update_cmd_producer(adapter
, 0);
1080 netxen_nic_update_cmd_consumer(adapter
, 0);
1083 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1084 for (ring
= 0; ring
< adapter
->max_rds_rings
; ring
++)
1085 netxen_post_rx_buffers(adapter
, ctx
, ring
);
1087 if (NETXEN_IS_MSI_FAMILY(adapter
))
1088 handler
= netxen_msi_intr
;
1090 flags
|= IRQF_SHARED
;
1091 handler
= netxen_intr
;
1093 adapter
->irq
= netdev
->irq
;
1094 err
= request_irq(adapter
->irq
, handler
,
1095 flags
, netdev
->name
, adapter
);
1097 printk(KERN_ERR
"request_irq failed with: %d\n", err
);
1098 goto err_out_free_rxbuf
;
1101 adapter
->is_up
= NETXEN_ADAPTER_UP_MAGIC
;
1104 /* Done here again so that even if phantom sw overwrote it,
1106 err
= adapter
->init_port(adapter
, adapter
->physical_port
);
1108 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
1109 netxen_nic_driver_name
, adapter
->portnum
);
1110 goto err_out_free_irq
;
1112 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
1114 netxen_nic_set_link_parameters(adapter
);
1116 netxen_set_multicast_list(netdev
);
1117 if (adapter
->set_mtu
)
1118 adapter
->set_mtu(adapter
, netdev
->mtu
);
1120 adapter
->ahw
.linkup
= 0;
1121 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1123 napi_enable(&adapter
->napi
);
1124 netxen_nic_enable_int(adapter
);
1126 netif_start_queue(netdev
);
1131 free_irq(adapter
->irq
, adapter
);
1133 netxen_release_rx_buffers(adapter
);
1135 netxen_free_hw_resources(adapter
);
1137 netxen_free_sw_resources(adapter
);
1142 * netxen_nic_close - Disables a network interface entry point
1144 static int netxen_nic_close(struct net_device
*netdev
)
1146 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1148 netif_carrier_off(netdev
);
1149 netif_stop_queue(netdev
);
1150 napi_disable(&adapter
->napi
);
1152 if (adapter
->stop_port
)
1153 adapter
->stop_port(adapter
);
1155 netxen_nic_disable_int(adapter
);
1157 netxen_release_tx_buffers(adapter
);
1159 FLUSH_SCHEDULED_WORK();
1160 del_timer_sync(&adapter
->watchdog_timer
);
1165 static bool netxen_tso_check(struct net_device
*netdev
,
1166 struct cmd_desc_type0
*desc
, struct sk_buff
*skb
)
1169 u8 opcode
= TX_ETHER_PKT
;
1170 __be16 protocol
= skb
->protocol
;
1173 if (protocol
== cpu_to_be16(ETH_P_8021Q
)) {
1174 struct vlan_ethhdr
*vh
= (struct vlan_ethhdr
*)skb
->data
;
1175 protocol
= vh
->h_vlan_encapsulated_proto
;
1176 flags
= FLAGS_VLAN_TAGGED
;
1179 if ((netdev
->features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) &&
1180 skb_shinfo(skb
)->gso_size
> 0) {
1182 desc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
1183 desc
->total_hdr_length
=
1184 skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1186 opcode
= (protocol
== cpu_to_be16(ETH_P_IPV6
)) ?
1187 TX_TCP_LSO6
: TX_TCP_LSO
;
1190 } else if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
1193 if (protocol
== cpu_to_be16(ETH_P_IP
)) {
1194 l4proto
= ip_hdr(skb
)->protocol
;
1196 if (l4proto
== IPPROTO_TCP
)
1197 opcode
= TX_TCP_PKT
;
1198 else if(l4proto
== IPPROTO_UDP
)
1199 opcode
= TX_UDP_PKT
;
1200 } else if (protocol
== cpu_to_be16(ETH_P_IPV6
)) {
1201 l4proto
= ipv6_hdr(skb
)->nexthdr
;
1203 if (l4proto
== IPPROTO_TCP
)
1204 opcode
= TX_TCPV6_PKT
;
1205 else if(l4proto
== IPPROTO_UDP
)
1206 opcode
= TX_UDPV6_PKT
;
1209 desc
->tcp_hdr_offset
= skb_transport_offset(skb
);
1210 desc
->ip_hdr_offset
= skb_network_offset(skb
);
1211 netxen_set_tx_flags_opcode(desc
, flags
, opcode
);
1216 netxen_clean_tx_dma_mapping(struct pci_dev
*pdev
,
1217 struct netxen_cmd_buffer
*pbuf
, int last
)
1220 struct netxen_skb_frag
*buffrag
;
1222 buffrag
= &pbuf
->frag_array
[0];
1223 pci_unmap_single(pdev
, buffrag
->dma
,
1224 buffrag
->length
, PCI_DMA_TODEVICE
);
1226 for (k
= 1; k
< last
; k
++) {
1227 buffrag
= &pbuf
->frag_array
[k
];
1228 pci_unmap_page(pdev
, buffrag
->dma
,
1229 buffrag
->length
, PCI_DMA_TODEVICE
);
1233 static int netxen_nic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
1235 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1236 struct netxen_hardware_context
*hw
= &adapter
->ahw
;
1237 unsigned int first_seg_len
= skb
->len
- skb
->data_len
;
1238 struct netxen_cmd_buffer
*pbuf
;
1239 struct netxen_skb_frag
*buffrag
;
1240 struct cmd_desc_type0
*hwdesc
;
1241 struct pci_dev
*pdev
= adapter
->pdev
;
1242 dma_addr_t temp_dma
;
1245 u32 producer
, consumer
;
1246 int frag_count
, no_of_desc
;
1247 u32 num_txd
= adapter
->max_tx_desc_count
;
1248 bool is_tso
= false;
1250 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
1252 /* There 4 fragments per descriptor */
1253 no_of_desc
= (frag_count
+ 3) >> 2;
1255 producer
= adapter
->cmd_producer
;
1257 consumer
= adapter
->last_cmd_consumer
;
1258 if ((no_of_desc
+2) > find_diff_among(producer
, consumer
, num_txd
)) {
1259 netif_stop_queue(netdev
);
1261 return NETDEV_TX_BUSY
;
1264 /* Copy the descriptors into the hardware */
1265 hwdesc
= &hw
->cmd_desc_head
[producer
];
1266 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1267 /* Take skb->data itself */
1268 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1270 is_tso
= netxen_tso_check(netdev
, hwdesc
, skb
);
1273 pbuf
->frag_count
= frag_count
;
1274 buffrag
= &pbuf
->frag_array
[0];
1275 temp_dma
= pci_map_single(pdev
, skb
->data
, first_seg_len
,
1277 if (pci_dma_mapping_error(pdev
, temp_dma
))
1280 buffrag
->dma
= temp_dma
;
1281 buffrag
->length
= first_seg_len
;
1282 netxen_set_tx_frags_len(hwdesc
, frag_count
, skb
->len
);
1283 netxen_set_tx_port(hwdesc
, adapter
->portnum
);
1285 hwdesc
->buffer1_length
= cpu_to_le16(first_seg_len
);
1286 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
1288 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
1289 struct skb_frag_struct
*frag
;
1291 unsigned long offset
;
1293 /* move to next desc. if there is a need */
1294 if ((i
& 0x3) == 0) {
1296 producer
= get_next_index(producer
, num_txd
);
1297 hwdesc
= &hw
->cmd_desc_head
[producer
];
1298 memset(hwdesc
, 0, sizeof(struct cmd_desc_type0
));
1299 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1302 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1304 offset
= frag
->page_offset
;
1307 temp_dma
= pci_map_page(pdev
, frag
->page
, offset
,
1308 len
, PCI_DMA_TODEVICE
);
1309 if (pci_dma_mapping_error(pdev
, temp_dma
)) {
1310 netxen_clean_tx_dma_mapping(pdev
, pbuf
, i
);
1315 buffrag
->dma
= temp_dma
;
1316 buffrag
->length
= temp_len
;
1320 hwdesc
->buffer1_length
= cpu_to_le16(temp_len
);
1321 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1324 hwdesc
->buffer2_length
= cpu_to_le16(temp_len
);
1325 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1328 hwdesc
->buffer3_length
= cpu_to_le16(temp_len
);
1329 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1332 hwdesc
->buffer4_length
= cpu_to_le16(temp_len
);
1333 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1338 producer
= get_next_index(producer
, num_txd
);
1340 /* For LSO, we need to copy the MAC/IP/TCP headers into
1341 * the descriptor ring
1344 int hdr_len
, first_hdr_len
, more_hdr
;
1345 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1346 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1347 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1350 first_hdr_len
= hdr_len
;
1353 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1354 hwdesc
= &hw
->cmd_desc_head
[producer
];
1355 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1358 /* copy the first 64 bytes */
1359 memcpy(((void *)hwdesc
) + 2,
1360 (void *)(skb
->data
), first_hdr_len
);
1361 producer
= get_next_index(producer
, num_txd
);
1364 hwdesc
= &hw
->cmd_desc_head
[producer
];
1365 pbuf
= &adapter
->cmd_buf_arr
[producer
];
1367 /* copy the next 64 bytes - should be enough except
1368 * for pathological case
1370 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1374 producer
= get_next_index(producer
, num_txd
);
1378 adapter
->cmd_producer
= producer
;
1379 adapter
->stats
.txbytes
+= skb
->len
;
1381 netxen_nic_update_cmd_producer(adapter
, adapter
->cmd_producer
);
1383 adapter
->stats
.xmitcalled
++;
1384 netdev
->trans_start
= jiffies
;
1386 return NETDEV_TX_OK
;
1389 adapter
->stats
.txdropped
++;
1390 dev_kfree_skb_any(skb
);
1391 return NETDEV_TX_OK
;
1394 static int netxen_nic_check_temp(struct netxen_adapter
*adapter
)
1396 struct net_device
*netdev
= adapter
->netdev
;
1397 uint32_t temp
, temp_state
, temp_val
;
1400 temp
= adapter
->pci_read_normalize(adapter
, CRB_TEMP_STATE
);
1402 temp_state
= nx_get_temp_state(temp
);
1403 temp_val
= nx_get_temp_val(temp
);
1405 if (temp_state
== NX_TEMP_PANIC
) {
1407 "%s: Device temperature %d degrees C exceeds"
1408 " maximum allowed. Hardware has been shut down.\n",
1409 netxen_nic_driver_name
, temp_val
);
1411 netif_carrier_off(netdev
);
1412 netif_stop_queue(netdev
);
1414 } else if (temp_state
== NX_TEMP_WARN
) {
1415 if (adapter
->temp
== NX_TEMP_NORMAL
) {
1417 "%s: Device temperature %d degrees C "
1418 "exceeds operating range."
1419 " Immediate action needed.\n",
1420 netxen_nic_driver_name
, temp_val
);
1423 if (adapter
->temp
== NX_TEMP_WARN
) {
1425 "%s: Device temperature is now %d degrees C"
1426 " in normal range.\n", netxen_nic_driver_name
,
1430 adapter
->temp
= temp_state
;
1434 static void netxen_nic_handle_phy_intr(struct netxen_adapter
*adapter
)
1436 struct net_device
*netdev
= adapter
->netdev
;
1437 u32 val
, port
, linkup
;
1439 port
= adapter
->physical_port
;
1441 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
1442 val
= adapter
->pci_read_normalize(adapter
, CRB_XG_STATE_P3
);
1443 val
= XG_LINK_STATE_P3(adapter
->ahw
.pci_func
, val
);
1444 linkup
= (val
== XG_LINK_UP_P3
);
1446 val
= adapter
->pci_read_normalize(adapter
, CRB_XG_STATE
);
1447 if (adapter
->ahw
.board_type
== NETXEN_NIC_GBE
)
1448 linkup
= (val
>> port
) & 1;
1450 val
= (val
>> port
*8) & 0xff;
1451 linkup
= (val
== XG_LINK_UP
);
1455 if (adapter
->ahw
.linkup
&& !linkup
) {
1456 printk(KERN_INFO
"%s: %s NIC Link is down\n",
1457 netxen_nic_driver_name
, netdev
->name
);
1458 adapter
->ahw
.linkup
= 0;
1459 if (netif_running(netdev
)) {
1460 netif_carrier_off(netdev
);
1461 netif_stop_queue(netdev
);
1464 netxen_nic_set_link_parameters(adapter
);
1465 } else if (!adapter
->ahw
.linkup
&& linkup
) {
1466 printk(KERN_INFO
"%s: %s NIC Link is up\n",
1467 netxen_nic_driver_name
, netdev
->name
);
1468 adapter
->ahw
.linkup
= 1;
1469 if (netif_running(netdev
)) {
1470 netif_carrier_on(netdev
);
1471 netif_wake_queue(netdev
);
1474 netxen_nic_set_link_parameters(adapter
);
1478 static void netxen_watchdog(unsigned long v
)
1480 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1482 SCHEDULE_WORK(&adapter
->watchdog_task
);
1485 void netxen_watchdog_task(struct work_struct
*work
)
1487 struct netxen_adapter
*adapter
=
1488 container_of(work
, struct netxen_adapter
, watchdog_task
);
1490 if ((adapter
->portnum
== 0) && netxen_nic_check_temp(adapter
))
1493 netxen_nic_handle_phy_intr(adapter
);
1495 if (netif_running(adapter
->netdev
))
1496 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1499 static void netxen_tx_timeout(struct net_device
*netdev
)
1501 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1502 netdev_priv(netdev
);
1503 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1506 static void netxen_tx_timeout_task(struct work_struct
*work
)
1508 struct netxen_adapter
*adapter
=
1509 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1511 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1512 netxen_nic_driver_name
, adapter
->netdev
->name
);
1514 netxen_nic_disable_int(adapter
);
1515 napi_disable(&adapter
->napi
);
1517 adapter
->netdev
->trans_start
= jiffies
;
1519 napi_enable(&adapter
->napi
);
1520 netxen_nic_enable_int(adapter
);
1521 netif_wake_queue(adapter
->netdev
);
1525 * netxen_nic_get_stats - Get System Network Statistics
1526 * @netdev: network interface device structure
1528 struct net_device_stats
*netxen_nic_get_stats(struct net_device
*netdev
)
1530 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1531 struct net_device_stats
*stats
= &adapter
->net_stats
;
1533 memset(stats
, 0, sizeof(*stats
));
1535 /* total packets received */
1536 stats
->rx_packets
= adapter
->stats
.no_rcv
;
1537 /* total packets transmitted */
1538 stats
->tx_packets
= adapter
->stats
.xmitedframes
+
1539 adapter
->stats
.xmitfinished
;
1540 /* total bytes received */
1541 stats
->rx_bytes
= adapter
->stats
.rxbytes
;
1542 /* total bytes transmitted */
1543 stats
->tx_bytes
= adapter
->stats
.txbytes
;
1544 /* bad packets received */
1545 stats
->rx_errors
= adapter
->stats
.rcvdbadskb
;
1546 /* packet transmit problems */
1547 stats
->tx_errors
= adapter
->stats
.nocmddescriptor
;
1548 /* no space in linux buffers */
1549 stats
->rx_dropped
= adapter
->stats
.rxdropped
;
1550 /* no space available in linux */
1551 stats
->tx_dropped
= adapter
->stats
.txdropped
;
1556 static irqreturn_t
netxen_intr(int irq
, void *data
)
1558 struct netxen_adapter
*adapter
= data
;
1561 status
= adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1563 if (!(status
& adapter
->legacy_intr
.int_vec_bit
))
1566 if (adapter
->ahw
.revision_id
>= NX_P3_B1
) {
1567 /* check interrupt state machine, to be sure */
1568 status
= adapter
->pci_read_immediate(adapter
,
1570 if (!ISR_LEGACY_INT_TRIGGERED(status
))
1574 unsigned long our_int
= 0;
1576 our_int
= adapter
->pci_read_normalize(adapter
, CRB_INT_VECTOR
);
1578 /* not our interrupt */
1579 if (!test_and_clear_bit((7 + adapter
->portnum
), &our_int
))
1582 /* claim interrupt */
1583 adapter
->pci_write_normalize(adapter
,
1584 CRB_INT_VECTOR
, (our_int
& 0xffffffff));
1587 /* clear interrupt */
1588 if (adapter
->fw_major
< 4)
1589 netxen_nic_disable_int(adapter
);
1591 adapter
->pci_write_immediate(adapter
,
1592 adapter
->legacy_intr
.tgt_status_reg
,
1594 /* read twice to ensure write is flushed */
1595 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1596 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1598 napi_schedule(&adapter
->napi
);
1603 static irqreturn_t
netxen_msi_intr(int irq
, void *data
)
1605 struct netxen_adapter
*adapter
= data
;
1607 /* clear interrupt */
1608 adapter
->pci_write_immediate(adapter
,
1609 msi_tgt_status
[adapter
->ahw
.pci_func
], 0xffffffff);
1611 napi_schedule(&adapter
->napi
);
1615 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
)
1617 struct netxen_adapter
*adapter
= container_of(napi
, struct netxen_adapter
, napi
);
1622 tx_complete
= netxen_process_cmd_ring(adapter
);
1625 for (ctx
= 0; ctx
< MAX_RCV_CTX
; ++ctx
) {
1627 * Fairness issue. This will give undue weight to the
1628 * receive context 0.
1632 * To avoid starvation, we give each of our receivers,
1633 * a fraction of the quota. Sometimes, it might happen that we
1634 * have enough quota to process every packet, but since all the
1635 * packets are on one context, it gets only half of the quota,
1636 * and ends up not processing it.
1638 work_done
+= netxen_process_rcv_ring(adapter
, ctx
,
1639 budget
/ MAX_RCV_CTX
);
1642 if ((work_done
< budget
) && tx_complete
) {
1643 napi_complete(&adapter
->napi
);
1644 netxen_nic_enable_int(adapter
);
1650 #ifdef CONFIG_NET_POLL_CONTROLLER
1651 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1653 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1654 disable_irq(adapter
->irq
);
1655 netxen_intr(adapter
->irq
, adapter
);
1656 enable_irq(adapter
->irq
);
1660 static struct pci_driver netxen_driver
= {
1661 .name
= netxen_nic_driver_name
,
1662 .id_table
= netxen_pci_tbl
,
1663 .probe
= netxen_nic_probe
,
1664 .remove
= __devexit_p(netxen_nic_remove
)
1667 /* Driver Registration on NetXen card */
1669 static int __init
netxen_init_module(void)
1671 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == NULL
)
1674 return pci_register_driver(&netxen_driver
);
1677 module_init(netxen_init_module
);
1679 static void __exit
netxen_exit_module(void)
1681 pci_unregister_driver(&netxen_driver
);
1682 destroy_workqueue(netxen_workq
);
1685 module_exit(netxen_exit_module
);