2 * Copyright (C) 2003 - 2009 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:
27 * Cupertino, CA 95014-0701
31 #include <linux/vmalloc.h>
32 #include <linux/interrupt.h>
33 #include "netxen_nic_hw.h"
35 #include "netxen_nic.h"
36 #include "netxen_nic_phan_reg.h"
38 #include <linux/dma-mapping.h>
39 #include <linux/if_vlan.h>
41 #include <linux/ipv6.h>
43 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID
);
47 char netxen_nic_driver_name
[] = "netxen_nic";
48 static char netxen_nic_driver_string
[] = "NetXen Network Driver version "
49 NETXEN_NIC_LINUX_VERSIONID
;
51 static int port_mode
= NETXEN_PORT_MODE_AUTO_NEG
;
53 /* Default to restricted 1G auto-neg mode */
54 static int wol_port_mode
= 5;
56 static int use_msi
= 1;
58 static int use_msi_x
= 1;
60 /* Local functions to NetXen NIC driver */
61 static int __devinit
netxen_nic_probe(struct pci_dev
*pdev
,
62 const struct pci_device_id
*ent
);
63 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
);
64 static int netxen_nic_open(struct net_device
*netdev
);
65 static int netxen_nic_close(struct net_device
*netdev
);
66 static int netxen_nic_xmit_frame(struct sk_buff
*, struct net_device
*);
67 static void netxen_tx_timeout(struct net_device
*netdev
);
68 static void netxen_tx_timeout_task(struct work_struct
*work
);
69 static void netxen_watchdog(unsigned long);
70 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
);
71 #ifdef CONFIG_NET_POLL_CONTROLLER
72 static void netxen_nic_poll_controller(struct net_device
*netdev
);
74 static irqreturn_t
netxen_intr(int irq
, void *data
);
75 static irqreturn_t
netxen_msi_intr(int irq
, void *data
);
76 static irqreturn_t
netxen_msix_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
);
97 static struct workqueue_struct
*netxen_workq
;
98 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
99 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
101 static void netxen_watchdog(unsigned long);
103 static uint32_t crb_cmd_producer
[4] = {
104 CRB_CMD_PRODUCER_OFFSET
, CRB_CMD_PRODUCER_OFFSET_1
,
105 CRB_CMD_PRODUCER_OFFSET_2
, CRB_CMD_PRODUCER_OFFSET_3
109 netxen_nic_update_cmd_producer(struct netxen_adapter
*adapter
,
110 struct nx_host_tx_ring
*tx_ring
, u32 producer
)
112 NXWR32(adapter
, tx_ring
->crb_cmd_producer
, producer
);
115 static uint32_t crb_cmd_consumer
[4] = {
116 CRB_CMD_CONSUMER_OFFSET
, CRB_CMD_CONSUMER_OFFSET_1
,
117 CRB_CMD_CONSUMER_OFFSET_2
, CRB_CMD_CONSUMER_OFFSET_3
121 netxen_nic_update_cmd_consumer(struct netxen_adapter
*adapter
,
122 struct nx_host_tx_ring
*tx_ring
, u32 consumer
)
124 NXWR32(adapter
, tx_ring
->crb_cmd_consumer
, consumer
);
127 static uint32_t msi_tgt_status
[8] = {
128 ISR_INT_TARGET_STATUS
, ISR_INT_TARGET_STATUS_F1
,
129 ISR_INT_TARGET_STATUS_F2
, ISR_INT_TARGET_STATUS_F3
,
130 ISR_INT_TARGET_STATUS_F4
, ISR_INT_TARGET_STATUS_F5
,
131 ISR_INT_TARGET_STATUS_F6
, ISR_INT_TARGET_STATUS_F7
134 static struct netxen_legacy_intr_set legacy_intr
[] = NX_LEGACY_INTR_CONFIG
;
136 static inline void netxen_nic_disable_int(struct nx_host_sds_ring
*sds_ring
)
138 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
140 NXWR32(adapter
, sds_ring
->crb_intr_mask
, 0);
143 static inline void netxen_nic_enable_int(struct nx_host_sds_ring
*sds_ring
)
145 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
147 NXWR32(adapter
, sds_ring
->crb_intr_mask
, 0x1);
149 if (!NETXEN_IS_MSI_FAMILY(adapter
))
150 adapter
->pci_write_immediate(adapter
,
151 adapter
->legacy_intr
.tgt_mask_reg
, 0xfbff);
155 netxen_alloc_sds_rings(struct netxen_recv_context
*recv_ctx
, int count
)
157 int size
= sizeof(struct nx_host_sds_ring
) * count
;
159 recv_ctx
->sds_rings
= kzalloc(size
, GFP_KERNEL
);
161 return (recv_ctx
->sds_rings
== NULL
);
165 netxen_free_sds_rings(struct netxen_recv_context
*recv_ctx
)
167 if (recv_ctx
->sds_rings
!= NULL
)
168 kfree(recv_ctx
->sds_rings
);
172 netxen_napi_add(struct netxen_adapter
*adapter
, struct net_device
*netdev
)
175 struct nx_host_sds_ring
*sds_ring
;
176 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
178 if (netxen_alloc_sds_rings(recv_ctx
, adapter
->max_sds_rings
))
181 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
182 sds_ring
= &recv_ctx
->sds_rings
[ring
];
183 netif_napi_add(netdev
, &sds_ring
->napi
,
184 netxen_nic_poll
, NETXEN_NETDEV_WEIGHT
);
191 netxen_napi_enable(struct netxen_adapter
*adapter
)
194 struct nx_host_sds_ring
*sds_ring
;
195 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
197 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
198 sds_ring
= &recv_ctx
->sds_rings
[ring
];
199 napi_enable(&sds_ring
->napi
);
200 netxen_nic_enable_int(sds_ring
);
205 netxen_napi_disable(struct netxen_adapter
*adapter
)
208 struct nx_host_sds_ring
*sds_ring
;
209 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
211 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
212 sds_ring
= &recv_ctx
->sds_rings
[ring
];
213 napi_disable(&sds_ring
->napi
);
214 netxen_nic_disable_int(sds_ring
);
215 synchronize_irq(sds_ring
->irq
);
219 static int nx_set_dma_mask(struct netxen_adapter
*adapter
, uint8_t revision_id
)
221 struct pci_dev
*pdev
= adapter
->pdev
;
222 uint64_t mask
, cmask
;
224 adapter
->pci_using_dac
= 0;
226 mask
= DMA_BIT_MASK(32);
228 * Consistent DMA mask is set to 32 bit because it cannot be set to
229 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
230 * come off this pool.
232 cmask
= DMA_BIT_MASK(32);
235 if (revision_id
>= NX_P3_B0
)
236 mask
= DMA_BIT_MASK(39);
237 else if (revision_id
== NX_P2_C1
)
238 mask
= DMA_BIT_MASK(35);
240 if (pci_set_dma_mask(pdev
, mask
) == 0 &&
241 pci_set_consistent_dma_mask(pdev
, cmask
) == 0) {
242 adapter
->pci_using_dac
= 1;
249 /* Update addressable range if firmware supports it */
251 nx_update_dma_mask(struct netxen_adapter
*adapter
)
253 int change
, shift
, err
;
254 uint64_t mask
, old_mask
;
255 struct pci_dev
*pdev
= adapter
->pdev
;
259 shift
= NXRD32(adapter
, CRB_DMA_SHIFT
);
263 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
) && (shift
> 9))
265 else if ((adapter
->ahw
.revision_id
== NX_P2_C1
) && (shift
<= 4))
269 old_mask
= pdev
->dma_mask
;
270 mask
= (1ULL<<(32+shift
)) - 1;
272 err
= pci_set_dma_mask(pdev
, mask
);
274 return pci_set_dma_mask(pdev
, old_mask
);
280 static void netxen_check_options(struct netxen_adapter
*adapter
)
282 if (adapter
->ahw
.port_type
== NETXEN_NIC_XGBE
)
283 adapter
->num_rxd
= MAX_RCV_DESCRIPTORS_10G
;
284 else if (adapter
->ahw
.port_type
== NETXEN_NIC_GBE
)
285 adapter
->num_rxd
= MAX_RCV_DESCRIPTORS_1G
;
287 adapter
->msix_supported
= 0;
288 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
289 adapter
->msix_supported
= !!use_msi_x
;
290 adapter
->rss_supported
= !!use_msi_x
;
291 } else if (adapter
->fw_version
>= NETXEN_VERSION_CODE(3, 4, 336)) {
292 switch (adapter
->ahw
.board_type
) {
293 case NETXEN_BRDTYPE_P2_SB31_10G
:
294 case NETXEN_BRDTYPE_P2_SB31_10G_CX4
:
295 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
296 adapter
->msix_supported
= !!use_msi_x
;
297 adapter
->rss_supported
= !!use_msi_x
;
304 adapter
->num_txd
= MAX_CMD_DESCRIPTORS_HOST
;
305 adapter
->num_jumbo_rxd
= MAX_JUMBO_RCV_DESCRIPTORS
;
306 adapter
->num_lro_rxd
= MAX_LRO_RCV_DESCRIPTORS
;
312 netxen_check_hw_init(struct netxen_adapter
*adapter
, int first_boot
)
316 if (first_boot
== 0x55555555) {
317 /* This is the first boot after power up */
318 NXWR32(adapter
, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC
);
320 if (!NX_IS_REVISION_P2(adapter
->ahw
.revision_id
))
323 /* PCI bus master workaround */
324 first_boot
= NXRD32(adapter
, NETXEN_PCIE_REG(0x4));
325 if (!(first_boot
& 0x4)) {
327 NXWR32(adapter
, NETXEN_PCIE_REG(0x4), first_boot
);
328 first_boot
= NXRD32(adapter
, NETXEN_PCIE_REG(0x4));
331 /* This is the first boot after power up */
332 first_boot
= NXRD32(adapter
, NETXEN_ROMUSB_GLB_SW_RESET
);
333 if (first_boot
!= 0x80000f) {
334 /* clear the register for future unloads/loads */
335 NXWR32(adapter
, NETXEN_CAM_RAM(0x1fc), 0);
339 /* Start P2 boot loader */
340 val
= NXRD32(adapter
, NETXEN_ROMUSB_GLB_PEGTUNE_DONE
);
341 NXWR32(adapter
, NETXEN_ROMUSB_GLB_PEGTUNE_DONE
, val
| 0x1);
345 val
= NXRD32(adapter
, NETXEN_CAM_RAM(0x1fc));
347 if (++timeout
> 5000)
350 } while (val
== NETXEN_BDINFO_MAGIC
);
355 static void netxen_set_port_mode(struct netxen_adapter
*adapter
)
359 val
= adapter
->ahw
.board_type
;
360 if ((val
== NETXEN_BRDTYPE_P3_HMEZ
) ||
361 (val
== NETXEN_BRDTYPE_P3_XG_LOM
)) {
362 if (port_mode
== NETXEN_PORT_MODE_802_3_AP
) {
363 data
= NETXEN_PORT_MODE_802_3_AP
;
364 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
365 } else if (port_mode
== NETXEN_PORT_MODE_XG
) {
366 data
= NETXEN_PORT_MODE_XG
;
367 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
368 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_1G
) {
369 data
= NETXEN_PORT_MODE_AUTO_NEG_1G
;
370 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
371 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_XG
) {
372 data
= NETXEN_PORT_MODE_AUTO_NEG_XG
;
373 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
375 data
= NETXEN_PORT_MODE_AUTO_NEG
;
376 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
379 if ((wol_port_mode
!= NETXEN_PORT_MODE_802_3_AP
) &&
380 (wol_port_mode
!= NETXEN_PORT_MODE_XG
) &&
381 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_1G
) &&
382 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_XG
)) {
383 wol_port_mode
= NETXEN_PORT_MODE_AUTO_NEG
;
385 NXWR32(adapter
, NETXEN_WOL_PORT_MODE
, wol_port_mode
);
389 static void netxen_set_msix_bit(struct pci_dev
*pdev
, int enable
)
394 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSIX
);
396 pci_read_config_dword(pdev
, pos
, &control
);
398 control
|= PCI_MSIX_FLAGS_ENABLE
;
401 pci_write_config_dword(pdev
, pos
, control
);
405 static void netxen_init_msix_entries(struct netxen_adapter
*adapter
, int count
)
409 for (i
= 0; i
< count
; i
++)
410 adapter
->msix_entries
[i
].entry
= i
;
414 netxen_read_mac_addr(struct netxen_adapter
*adapter
)
419 struct net_device
*netdev
= adapter
->netdev
;
420 struct pci_dev
*pdev
= adapter
->pdev
;
422 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
423 if (netxen_p3_get_mac_addr(adapter
, &mac_addr
) != 0)
426 if (netxen_get_flash_mac_addr(adapter
, &mac_addr
) != 0)
430 p
= (unsigned char *)&mac_addr
;
431 for (i
= 0; i
< 6; i
++)
432 netdev
->dev_addr
[i
] = *(p
+ 5 - i
);
434 memcpy(netdev
->perm_addr
, netdev
->dev_addr
, netdev
->addr_len
);
436 /* set station address */
438 if (!is_valid_ether_addr(netdev
->perm_addr
))
439 dev_warn(&pdev
->dev
, "Bad MAC address %pM.\n", netdev
->dev_addr
);
444 int netxen_nic_set_mac(struct net_device
*netdev
, void *p
)
446 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
447 struct sockaddr
*addr
= p
;
449 if (!is_valid_ether_addr(addr
->sa_data
))
452 if (netif_running(netdev
)) {
453 netif_device_detach(netdev
);
454 netxen_napi_disable(adapter
);
457 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
458 adapter
->macaddr_set(adapter
, addr
->sa_data
);
460 if (netif_running(netdev
)) {
461 netif_device_attach(netdev
);
462 netxen_napi_enable(adapter
);
467 static void netxen_set_multicast_list(struct net_device
*dev
)
469 struct netxen_adapter
*adapter
= netdev_priv(dev
);
471 adapter
->set_multi(dev
);
474 static const struct net_device_ops netxen_netdev_ops
= {
475 .ndo_open
= netxen_nic_open
,
476 .ndo_stop
= netxen_nic_close
,
477 .ndo_start_xmit
= netxen_nic_xmit_frame
,
478 .ndo_get_stats
= netxen_nic_get_stats
,
479 .ndo_validate_addr
= eth_validate_addr
,
480 .ndo_set_multicast_list
= netxen_set_multicast_list
,
481 .ndo_set_mac_address
= netxen_nic_set_mac
,
482 .ndo_change_mtu
= netxen_nic_change_mtu
,
483 .ndo_tx_timeout
= netxen_tx_timeout
,
484 #ifdef CONFIG_NET_POLL_CONTROLLER
485 .ndo_poll_controller
= netxen_nic_poll_controller
,
490 netxen_setup_intr(struct netxen_adapter
*adapter
)
492 struct netxen_legacy_intr_set
*legacy_intrp
;
493 struct pci_dev
*pdev
= adapter
->pdev
;
496 if (adapter
->rss_supported
) {
497 num_msix
= (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER
) ?
498 MSIX_ENTRIES_PER_ADAPTER
: 2;
502 adapter
->max_sds_rings
= 1;
504 adapter
->flags
&= ~(NETXEN_NIC_MSI_ENABLED
| NETXEN_NIC_MSIX_ENABLED
);
506 if (adapter
->ahw
.revision_id
>= NX_P3_B0
)
507 legacy_intrp
= &legacy_intr
[adapter
->ahw
.pci_func
];
509 legacy_intrp
= &legacy_intr
[0];
510 adapter
->legacy_intr
.int_vec_bit
= legacy_intrp
->int_vec_bit
;
511 adapter
->legacy_intr
.tgt_status_reg
= legacy_intrp
->tgt_status_reg
;
512 adapter
->legacy_intr
.tgt_mask_reg
= legacy_intrp
->tgt_mask_reg
;
513 adapter
->legacy_intr
.pci_int_reg
= legacy_intrp
->pci_int_reg
;
515 netxen_set_msix_bit(pdev
, 0);
517 if (adapter
->msix_supported
) {
519 netxen_init_msix_entries(adapter
, num_msix
);
520 err
= pci_enable_msix(pdev
, adapter
->msix_entries
, num_msix
);
522 adapter
->flags
|= NETXEN_NIC_MSIX_ENABLED
;
523 netxen_set_msix_bit(pdev
, 1);
525 if (adapter
->rss_supported
)
526 adapter
->max_sds_rings
= num_msix
;
528 dev_info(&pdev
->dev
, "using msi-x interrupts\n");
533 pci_disable_msix(pdev
);
535 /* fall through for msi */
538 if (use_msi
&& !pci_enable_msi(pdev
)) {
539 adapter
->flags
|= NETXEN_NIC_MSI_ENABLED
;
540 adapter
->msi_tgt_status
=
541 msi_tgt_status
[adapter
->ahw
.pci_func
];
542 dev_info(&pdev
->dev
, "using msi interrupts\n");
546 dev_info(&pdev
->dev
, "using legacy interrupts\n");
547 adapter
->msix_entries
[0].vector
= pdev
->irq
;
551 netxen_teardown_intr(struct netxen_adapter
*adapter
)
553 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
554 pci_disable_msix(adapter
->pdev
);
555 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
556 pci_disable_msi(adapter
->pdev
);
560 netxen_cleanup_pci_map(struct netxen_adapter
*adapter
)
562 if (adapter
->ahw
.db_base
!= NULL
)
563 iounmap(adapter
->ahw
.db_base
);
564 if (adapter
->ahw
.pci_base0
!= NULL
)
565 iounmap(adapter
->ahw
.pci_base0
);
566 if (adapter
->ahw
.pci_base1
!= NULL
)
567 iounmap(adapter
->ahw
.pci_base1
);
568 if (adapter
->ahw
.pci_base2
!= NULL
)
569 iounmap(adapter
->ahw
.pci_base2
);
573 netxen_setup_pci_map(struct netxen_adapter
*adapter
)
575 void __iomem
*mem_ptr0
= NULL
;
576 void __iomem
*mem_ptr1
= NULL
;
577 void __iomem
*mem_ptr2
= NULL
;
578 void __iomem
*db_ptr
= NULL
;
580 unsigned long mem_base
, mem_len
, db_base
, db_len
= 0, pci_len0
= 0;
582 struct pci_dev
*pdev
= adapter
->pdev
;
583 int pci_func
= adapter
->ahw
.pci_func
;
588 * Set the CRB window to invalid. If any register in window 0 is
589 * accessed it should set the window to 0 and then reset it to 1.
591 adapter
->curr_window
= 255;
592 adapter
->ahw
.qdr_sn_window
= -1;
593 adapter
->ahw
.ddr_mn_window
= -1;
595 /* remap phys address */
596 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
597 mem_len
= pci_resource_len(pdev
, 0);
600 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_128M
;
601 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_128M
;
602 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_128M
;
603 adapter
->pci_write_immediate
= netxen_nic_pci_write_immediate_128M
;
604 adapter
->pci_set_window
= netxen_nic_pci_set_window_128M
;
605 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_128M
;
606 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_128M
;
608 /* 128 Meg of memory */
609 if (mem_len
== NETXEN_PCI_128MB_SIZE
) {
610 mem_ptr0
= ioremap(mem_base
, FIRST_PAGE_GROUP_SIZE
);
611 mem_ptr1
= ioremap(mem_base
+ SECOND_PAGE_GROUP_START
,
612 SECOND_PAGE_GROUP_SIZE
);
613 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
,
614 THIRD_PAGE_GROUP_SIZE
);
615 } else if (mem_len
== NETXEN_PCI_32MB_SIZE
) {
616 mem_ptr1
= ioremap(mem_base
, SECOND_PAGE_GROUP_SIZE
);
617 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
-
618 SECOND_PAGE_GROUP_START
, THIRD_PAGE_GROUP_SIZE
);
619 } else if (mem_len
== NETXEN_PCI_2MB_SIZE
) {
620 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_2M
;
621 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_2M
;
622 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_2M
;
623 adapter
->pci_write_immediate
=
624 netxen_nic_pci_write_immediate_2M
;
625 adapter
->pci_set_window
= netxen_nic_pci_set_window_2M
;
626 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_2M
;
627 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_2M
;
629 mem_ptr0
= pci_ioremap_bar(pdev
, 0);
630 if (mem_ptr0
== NULL
) {
631 dev_err(&pdev
->dev
, "failed to map PCI bar 0\n");
636 adapter
->ahw
.ddr_mn_window
= 0;
637 adapter
->ahw
.qdr_sn_window
= 0;
639 adapter
->ahw
.mn_win_crb
= 0x100000 + PCIX_MN_WINDOW
+
641 adapter
->ahw
.ms_win_crb
= 0x100000 + PCIX_SN_WINDOW
;
643 adapter
->ahw
.ms_win_crb
+= (pci_func
* 0x20);
645 adapter
->ahw
.ms_win_crb
+=
646 0xA0 + ((pci_func
- 4) * 0x10);
651 dev_info(&pdev
->dev
, "%dMB memory map\n", (int)(mem_len
>>20));
653 adapter
->ahw
.pci_base0
= mem_ptr0
;
654 adapter
->ahw
.pci_len0
= pci_len0
;
655 adapter
->ahw
.pci_base1
= mem_ptr1
;
656 adapter
->ahw
.pci_base2
= mem_ptr2
;
658 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
661 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
662 db_len
= pci_resource_len(pdev
, 4);
665 printk(KERN_ERR
"%s: doorbell is disabled\n",
666 netxen_nic_driver_name
);
671 db_ptr
= ioremap(db_base
, NETXEN_DB_MAPSIZE_BYTES
);
673 printk(KERN_ERR
"%s: Failed to allocate doorbell map.",
674 netxen_nic_driver_name
);
680 adapter
->ahw
.db_base
= db_ptr
;
681 adapter
->ahw
.db_len
= db_len
;
685 netxen_cleanup_pci_map(adapter
);
690 netxen_start_firmware(struct netxen_adapter
*adapter
, int request_fw
)
692 int val
, err
, first_boot
;
693 struct pci_dev
*pdev
= adapter
->pdev
;
695 int first_driver
= 0;
697 if (NX_IS_REVISION_P2(adapter
->ahw
.revision_id
))
698 first_driver
= (adapter
->portnum
== 0);
700 first_driver
= (adapter
->ahw
.pci_func
== 0);
705 first_boot
= NXRD32(adapter
, NETXEN_CAM_RAM(0x1fc));
707 err
= netxen_check_hw_init(adapter
, first_boot
);
709 dev_err(&pdev
->dev
, "error in init HW init sequence\n");
714 netxen_request_firmware(adapter
);
716 if (first_boot
!= 0x55555555) {
717 NXWR32(adapter
, CRB_CMDPEG_STATE
, 0);
718 netxen_pinit_from_rom(adapter
, 0);
722 NXWR32(adapter
, CRB_DMA_SHIFT
, 0x55555555);
723 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
724 netxen_set_port_mode(adapter
);
726 netxen_load_firmware(adapter
);
728 if (NX_IS_REVISION_P2(adapter
->ahw
.revision_id
)) {
730 /* Initialize multicast addr pool owners */
732 if (adapter
->ahw
.port_type
== NETXEN_NIC_XGBE
)
734 NXWR32(adapter
, NETXEN_MAC_ADDR_CNTL_REG
, val
);
738 err
= netxen_initialize_adapter_offload(adapter
);
743 * Tell the hardware our version number.
745 val
= (_NETXEN_NIC_LINUX_MAJOR
<< 16)
746 | ((_NETXEN_NIC_LINUX_MINOR
<< 8))
747 | (_NETXEN_NIC_LINUX_SUBVERSION
);
748 NXWR32(adapter
, CRB_DRIVER_VERSION
, val
);
750 /* Handshake with the card before we register the devices. */
751 err
= netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
753 netxen_free_adapter_offload(adapter
);
761 netxen_nic_request_irq(struct netxen_adapter
*adapter
)
763 irq_handler_t handler
;
764 struct nx_host_sds_ring
*sds_ring
;
767 unsigned long flags
= IRQF_SAMPLE_RANDOM
;
768 struct net_device
*netdev
= adapter
->netdev
;
769 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
771 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
772 handler
= netxen_msix_intr
;
773 else if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
774 handler
= netxen_msi_intr
;
776 flags
|= IRQF_SHARED
;
777 handler
= netxen_intr
;
779 adapter
->irq
= netdev
->irq
;
781 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
782 sds_ring
= &recv_ctx
->sds_rings
[ring
];
783 sprintf(sds_ring
->name
, "%s[%d]", netdev
->name
, ring
);
784 err
= request_irq(sds_ring
->irq
, handler
,
785 flags
, sds_ring
->name
, sds_ring
);
794 netxen_nic_free_irq(struct netxen_adapter
*adapter
)
797 struct nx_host_sds_ring
*sds_ring
;
799 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
801 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
802 sds_ring
= &recv_ctx
->sds_rings
[ring
];
803 free_irq(sds_ring
->irq
, sds_ring
);
808 netxen_nic_up(struct netxen_adapter
*adapter
, struct net_device
*netdev
)
812 err
= adapter
->init_port(adapter
, adapter
->physical_port
);
814 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
815 netxen_nic_driver_name
, adapter
->portnum
);
818 if (NX_IS_REVISION_P2(adapter
->ahw
.revision_id
))
819 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
821 adapter
->set_multi(netdev
);
822 adapter
->set_mtu(adapter
, netdev
->mtu
);
824 adapter
->ahw
.linkup
= 0;
826 netxen_napi_enable(adapter
);
828 if (adapter
->max_sds_rings
> 1)
829 netxen_config_rss(adapter
, 1);
831 if (adapter
->capabilities
& NX_FW_CAPABILITY_LINK_NOTIFICATION
)
832 netxen_linkevent_request(adapter
, 1);
834 netxen_nic_set_link_parameters(adapter
);
836 mod_timer(&adapter
->watchdog_timer
, jiffies
);
842 netxen_nic_down(struct netxen_adapter
*adapter
, struct net_device
*netdev
)
844 netif_carrier_off(netdev
);
845 netif_stop_queue(netdev
);
847 if (adapter
->stop_port
)
848 adapter
->stop_port(adapter
);
850 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
851 netxen_p3_free_mac_list(adapter
);
853 netxen_napi_disable(adapter
);
855 netxen_release_tx_buffers(adapter
);
857 FLUSH_SCHEDULED_WORK();
858 del_timer_sync(&adapter
->watchdog_timer
);
863 netxen_nic_attach(struct netxen_adapter
*adapter
)
865 struct net_device
*netdev
= adapter
->netdev
;
866 struct pci_dev
*pdev
= adapter
->pdev
;
868 struct nx_host_rds_ring
*rds_ring
;
869 struct nx_host_tx_ring
*tx_ring
;
871 err
= netxen_init_firmware(adapter
);
873 printk(KERN_ERR
"Failed to init firmware\n");
877 if (adapter
->fw_major
< 4)
878 adapter
->max_rds_rings
= 3;
880 adapter
->max_rds_rings
= 2;
882 err
= netxen_alloc_sw_resources(adapter
);
884 printk(KERN_ERR
"%s: Error in setting sw resources\n",
889 netxen_nic_clear_stats(adapter
);
891 err
= netxen_alloc_hw_resources(adapter
);
893 printk(KERN_ERR
"%s: Error in setting hw resources\n",
895 goto err_out_free_sw
;
898 if (adapter
->fw_major
< 4) {
899 tx_ring
= adapter
->tx_ring
;
900 tx_ring
->crb_cmd_producer
= crb_cmd_producer
[adapter
->portnum
];
901 tx_ring
->crb_cmd_consumer
= crb_cmd_consumer
[adapter
->portnum
];
903 netxen_nic_update_cmd_producer(adapter
, tx_ring
, 0);
904 netxen_nic_update_cmd_consumer(adapter
, tx_ring
, 0);
907 for (ring
= 0; ring
< adapter
->max_rds_rings
; ring
++) {
908 rds_ring
= &adapter
->recv_ctx
.rds_rings
[ring
];
909 netxen_post_rx_buffers(adapter
, ring
, rds_ring
);
912 err
= netxen_nic_request_irq(adapter
);
914 dev_err(&pdev
->dev
, "%s: failed to setup interrupt\n",
916 goto err_out_free_rxbuf
;
919 adapter
->is_up
= NETXEN_ADAPTER_UP_MAGIC
;
923 netxen_release_rx_buffers(adapter
);
924 netxen_free_hw_resources(adapter
);
926 netxen_free_sw_resources(adapter
);
931 netxen_nic_detach(struct netxen_adapter
*adapter
)
933 netxen_release_rx_buffers(adapter
);
934 netxen_free_hw_resources(adapter
);
935 netxen_nic_free_irq(adapter
);
936 netxen_free_sw_resources(adapter
);
942 netxen_nic_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
944 struct net_device
*netdev
= NULL
;
945 struct netxen_adapter
*adapter
= NULL
;
947 int pci_func_id
= PCI_FUNC(pdev
->devfn
);
950 if (pdev
->class != 0x020000) {
951 printk(KERN_DEBUG
"NetXen function %d, class %x will not "
952 "be enabled.\n",pci_func_id
, pdev
->class);
956 if (pdev
->revision
>= NX_P3_A0
&& pdev
->revision
< NX_P3_B1
) {
957 printk(KERN_WARNING
"NetXen chip revisions between 0x%x-0x%x"
958 "will not be enabled.\n",
963 if ((err
= pci_enable_device(pdev
)))
966 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
968 goto err_out_disable_pdev
;
971 if ((err
= pci_request_regions(pdev
, netxen_nic_driver_name
)))
972 goto err_out_disable_pdev
;
974 pci_set_master(pdev
);
976 netdev
= alloc_etherdev(sizeof(struct netxen_adapter
));
978 printk(KERN_ERR
"%s: Failed to allocate memory for the "
979 "device block.Check system memory resource"
980 " usage.\n", netxen_nic_driver_name
);
981 goto err_out_free_res
;
984 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
986 adapter
= netdev_priv(netdev
);
987 adapter
->netdev
= netdev
;
988 adapter
->pdev
= pdev
;
989 adapter
->ahw
.pci_func
= pci_func_id
;
991 revision_id
= pdev
->revision
;
992 adapter
->ahw
.revision_id
= revision_id
;
994 err
= nx_set_dma_mask(adapter
, revision_id
);
996 goto err_out_free_netdev
;
998 rwlock_init(&adapter
->adapter_lock
);
999 spin_lock_init(&adapter
->tx_clean_lock
);
1000 INIT_LIST_HEAD(&adapter
->mac_list
);
1002 err
= netxen_setup_pci_map(adapter
);
1004 goto err_out_free_netdev
;
1006 /* This will be reset for mezz cards */
1007 adapter
->portnum
= pci_func_id
;
1008 adapter
->rx_csum
= 1;
1009 adapter
->mc_enabled
= 0;
1010 if (NX_IS_REVISION_P3(revision_id
))
1011 adapter
->max_mc_count
= 38;
1013 adapter
->max_mc_count
= 16;
1015 netdev
->netdev_ops
= &netxen_netdev_ops
;
1016 netdev
->watchdog_timeo
= 2*HZ
;
1018 netxen_nic_change_mtu(netdev
, netdev
->mtu
);
1020 SET_ETHTOOL_OPS(netdev
, &netxen_nic_ethtool_ops
);
1022 netdev
->features
|= (NETIF_F_SG
| NETIF_F_IP_CSUM
| NETIF_F_TSO
);
1023 netdev
->features
|= (NETIF_F_GRO
);
1024 netdev
->vlan_features
|= (NETIF_F_SG
| NETIF_F_IP_CSUM
| NETIF_F_TSO
);
1026 if (NX_IS_REVISION_P3(revision_id
)) {
1027 netdev
->features
|= (NETIF_F_IPV6_CSUM
| NETIF_F_TSO6
);
1028 netdev
->vlan_features
|= (NETIF_F_IPV6_CSUM
| NETIF_F_TSO6
);
1031 if (adapter
->pci_using_dac
) {
1032 netdev
->features
|= NETIF_F_HIGHDMA
;
1033 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
1036 if (netxen_nic_get_board_info(adapter
) != 0) {
1037 printk("%s: Error getting board config info.\n",
1038 netxen_nic_driver_name
);
1040 goto err_out_iounmap
;
1043 netxen_initialize_adapter_ops(adapter
);
1045 /* Mezz cards have PCI function 0,2,3 enabled */
1046 switch (adapter
->ahw
.board_type
) {
1047 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
1048 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
1049 if (pci_func_id
>= 2)
1050 adapter
->portnum
= pci_func_id
- 2;
1056 err
= netxen_start_firmware(adapter
, 1);
1058 goto err_out_iounmap
;
1060 nx_update_dma_mask(adapter
);
1062 netxen_nic_get_firmware_info(adapter
);
1065 * See if the firmware gave us a virtual-physical port mapping.
1067 adapter
->physical_port
= adapter
->portnum
;
1068 if (adapter
->fw_major
< 4) {
1069 i
= NXRD32(adapter
, CRB_V2P(adapter
->portnum
));
1070 if (i
!= 0x55555555)
1071 adapter
->physical_port
= i
;
1074 netxen_check_options(adapter
);
1076 netxen_setup_intr(adapter
);
1078 netdev
->irq
= adapter
->msix_entries
[0].vector
;
1080 if (netxen_napi_add(adapter
, netdev
))
1081 goto err_out_disable_msi
;
1083 init_timer(&adapter
->watchdog_timer
);
1084 adapter
->watchdog_timer
.function
= &netxen_watchdog
;
1085 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
1086 INIT_WORK(&adapter
->watchdog_task
, netxen_watchdog_task
);
1087 INIT_WORK(&adapter
->tx_timeout_task
, netxen_tx_timeout_task
);
1089 err
= netxen_read_mac_addr(adapter
);
1091 dev_warn(&pdev
->dev
, "failed to read mac addr\n");
1093 netif_carrier_off(netdev
);
1094 netif_stop_queue(netdev
);
1096 if ((err
= register_netdev(netdev
))) {
1097 printk(KERN_ERR
"%s: register_netdev failed port #%d"
1098 " aborting\n", netxen_nic_driver_name
,
1101 goto err_out_disable_msi
;
1104 pci_set_drvdata(pdev
, adapter
);
1106 switch (adapter
->ahw
.port_type
) {
1107 case NETXEN_NIC_GBE
:
1108 dev_info(&adapter
->pdev
->dev
, "%s: GbE port initialized\n",
1109 adapter
->netdev
->name
);
1111 case NETXEN_NIC_XGBE
:
1112 dev_info(&adapter
->pdev
->dev
, "%s: XGbE port initialized\n",
1113 adapter
->netdev
->name
);
1119 err_out_disable_msi
:
1120 netxen_teardown_intr(adapter
);
1122 netxen_free_adapter_offload(adapter
);
1125 netxen_cleanup_pci_map(adapter
);
1127 err_out_free_netdev
:
1128 free_netdev(netdev
);
1131 pci_release_regions(pdev
);
1133 err_out_disable_pdev
:
1134 pci_set_drvdata(pdev
, NULL
);
1135 pci_disable_device(pdev
);
1139 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
)
1141 struct netxen_adapter
*adapter
;
1142 struct net_device
*netdev
;
1144 adapter
= pci_get_drvdata(pdev
);
1145 if (adapter
== NULL
)
1148 netdev
= adapter
->netdev
;
1150 unregister_netdev(netdev
);
1152 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
1153 netxen_nic_detach(adapter
);
1156 if (adapter
->portnum
== 0)
1157 netxen_free_adapter_offload(adapter
);
1159 netxen_teardown_intr(adapter
);
1160 netxen_free_sds_rings(&adapter
->recv_ctx
);
1162 netxen_cleanup_pci_map(adapter
);
1164 netxen_release_firmware(adapter
);
1166 pci_release_regions(pdev
);
1167 pci_disable_device(pdev
);
1168 pci_set_drvdata(pdev
, NULL
);
1170 free_netdev(netdev
);
1174 netxen_nic_suspend(struct pci_dev
*pdev
, pm_message_t state
)
1177 struct netxen_adapter
*adapter
= pci_get_drvdata(pdev
);
1178 struct net_device
*netdev
= adapter
->netdev
;
1180 netif_device_detach(netdev
);
1182 if (netif_running(netdev
))
1183 netxen_nic_down(adapter
, netdev
);
1185 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
)
1186 netxen_nic_detach(adapter
);
1188 pci_save_state(pdev
);
1190 if (netxen_nic_wol_supported(adapter
)) {
1191 pci_enable_wake(pdev
, PCI_D3cold
, 1);
1192 pci_enable_wake(pdev
, PCI_D3hot
, 1);
1195 pci_disable_device(pdev
);
1196 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
1202 netxen_nic_resume(struct pci_dev
*pdev
)
1204 struct netxen_adapter
*adapter
= pci_get_drvdata(pdev
);
1205 struct net_device
*netdev
= adapter
->netdev
;
1208 pci_set_power_state(pdev
, PCI_D0
);
1209 pci_restore_state(pdev
);
1211 err
= pci_enable_device(pdev
);
1215 adapter
->curr_window
= 255;
1217 err
= netxen_start_firmware(adapter
, 0);
1219 dev_err(&pdev
->dev
, "failed to start firmware\n");
1223 if (netif_running(netdev
)) {
1224 err
= netxen_nic_attach(adapter
);
1228 err
= netxen_nic_up(adapter
, netdev
);
1232 netif_device_attach(netdev
);
1238 static int netxen_nic_open(struct net_device
*netdev
)
1240 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1243 if (adapter
->driver_mismatch
)
1246 if (adapter
->is_up
!= NETXEN_ADAPTER_UP_MAGIC
) {
1247 err
= netxen_nic_attach(adapter
);
1252 err
= netxen_nic_up(adapter
, netdev
);
1256 netif_start_queue(netdev
);
1261 netxen_nic_detach(adapter
);
1266 * netxen_nic_close - Disables a network interface entry point
1268 static int netxen_nic_close(struct net_device
*netdev
)
1270 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1272 netxen_nic_down(adapter
, netdev
);
1276 static bool netxen_tso_check(struct net_device
*netdev
,
1277 struct cmd_desc_type0
*desc
, struct sk_buff
*skb
)
1280 u8 opcode
= TX_ETHER_PKT
;
1281 __be16 protocol
= skb
->protocol
;
1284 if (protocol
== cpu_to_be16(ETH_P_8021Q
)) {
1285 struct vlan_ethhdr
*vh
= (struct vlan_ethhdr
*)skb
->data
;
1286 protocol
= vh
->h_vlan_encapsulated_proto
;
1287 flags
= FLAGS_VLAN_TAGGED
;
1290 if ((netdev
->features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) &&
1291 skb_shinfo(skb
)->gso_size
> 0) {
1293 desc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
1294 desc
->total_hdr_length
=
1295 skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1297 opcode
= (protocol
== cpu_to_be16(ETH_P_IPV6
)) ?
1298 TX_TCP_LSO6
: TX_TCP_LSO
;
1301 } else if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
1304 if (protocol
== cpu_to_be16(ETH_P_IP
)) {
1305 l4proto
= ip_hdr(skb
)->protocol
;
1307 if (l4proto
== IPPROTO_TCP
)
1308 opcode
= TX_TCP_PKT
;
1309 else if(l4proto
== IPPROTO_UDP
)
1310 opcode
= TX_UDP_PKT
;
1311 } else if (protocol
== cpu_to_be16(ETH_P_IPV6
)) {
1312 l4proto
= ipv6_hdr(skb
)->nexthdr
;
1314 if (l4proto
== IPPROTO_TCP
)
1315 opcode
= TX_TCPV6_PKT
;
1316 else if(l4proto
== IPPROTO_UDP
)
1317 opcode
= TX_UDPV6_PKT
;
1320 desc
->tcp_hdr_offset
= skb_transport_offset(skb
);
1321 desc
->ip_hdr_offset
= skb_network_offset(skb
);
1322 netxen_set_tx_flags_opcode(desc
, flags
, opcode
);
1327 netxen_clean_tx_dma_mapping(struct pci_dev
*pdev
,
1328 struct netxen_cmd_buffer
*pbuf
, int last
)
1331 struct netxen_skb_frag
*buffrag
;
1333 buffrag
= &pbuf
->frag_array
[0];
1334 pci_unmap_single(pdev
, buffrag
->dma
,
1335 buffrag
->length
, PCI_DMA_TODEVICE
);
1337 for (k
= 1; k
< last
; k
++) {
1338 buffrag
= &pbuf
->frag_array
[k
];
1339 pci_unmap_page(pdev
, buffrag
->dma
,
1340 buffrag
->length
, PCI_DMA_TODEVICE
);
1345 netxen_clear_cmddesc(u64
*desc
)
1348 for (i
= 0; i
< 8; i
++)
1353 netxen_nic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
1355 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1356 struct nx_host_tx_ring
*tx_ring
= adapter
->tx_ring
;
1357 unsigned int first_seg_len
= skb
->len
- skb
->data_len
;
1358 struct netxen_cmd_buffer
*pbuf
;
1359 struct netxen_skb_frag
*buffrag
;
1360 struct cmd_desc_type0
*hwdesc
;
1361 struct pci_dev
*pdev
= adapter
->pdev
;
1362 dma_addr_t temp_dma
;
1365 u32 producer
, consumer
;
1366 int frag_count
, no_of_desc
;
1367 u32 num_txd
= tx_ring
->num_desc
;
1368 bool is_tso
= false;
1370 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
1372 /* 4 fragments per cmd des */
1373 no_of_desc
= (frag_count
+ 3) >> 2;
1375 producer
= tx_ring
->producer
;
1377 consumer
= tx_ring
->sw_consumer
;
1378 if ((no_of_desc
+2) >= find_diff_among(producer
, consumer
, num_txd
)) {
1379 netif_stop_queue(netdev
);
1381 return NETDEV_TX_BUSY
;
1384 hwdesc
= &tx_ring
->desc_head
[producer
];
1385 netxen_clear_cmddesc((u64
*)hwdesc
);
1386 pbuf
= &tx_ring
->cmd_buf_arr
[producer
];
1388 is_tso
= netxen_tso_check(netdev
, hwdesc
, skb
);
1391 pbuf
->frag_count
= frag_count
;
1392 buffrag
= &pbuf
->frag_array
[0];
1393 temp_dma
= pci_map_single(pdev
, skb
->data
, first_seg_len
,
1395 if (pci_dma_mapping_error(pdev
, temp_dma
))
1398 buffrag
->dma
= temp_dma
;
1399 buffrag
->length
= first_seg_len
;
1400 netxen_set_tx_frags_len(hwdesc
, frag_count
, skb
->len
);
1401 netxen_set_tx_port(hwdesc
, adapter
->portnum
);
1403 hwdesc
->buffer_length
[0] = cpu_to_le16(first_seg_len
);
1404 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
1406 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
1407 struct skb_frag_struct
*frag
;
1409 unsigned long offset
;
1411 /* move to next desc. if there is a need */
1412 if ((i
& 0x3) == 0) {
1414 producer
= get_next_index(producer
, num_txd
);
1415 hwdesc
= &tx_ring
->desc_head
[producer
];
1416 netxen_clear_cmddesc((u64
*)hwdesc
);
1417 pbuf
= &tx_ring
->cmd_buf_arr
[producer
];
1420 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1422 offset
= frag
->page_offset
;
1425 temp_dma
= pci_map_page(pdev
, frag
->page
, offset
,
1426 len
, PCI_DMA_TODEVICE
);
1427 if (pci_dma_mapping_error(pdev
, temp_dma
)) {
1428 netxen_clean_tx_dma_mapping(pdev
, pbuf
, i
);
1433 buffrag
->dma
= temp_dma
;
1434 buffrag
->length
= temp_len
;
1436 hwdesc
->buffer_length
[k
] = cpu_to_le16(temp_len
);
1439 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1442 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1445 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1448 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1453 producer
= get_next_index(producer
, num_txd
);
1455 /* For LSO, we need to copy the MAC/IP/TCP headers into
1456 * the descriptor ring
1459 int hdr_len
, first_hdr_len
, more_hdr
;
1460 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1461 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1462 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1465 first_hdr_len
= hdr_len
;
1468 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1469 hwdesc
= &tx_ring
->desc_head
[producer
];
1470 pbuf
= &tx_ring
->cmd_buf_arr
[producer
];
1473 /* copy the first 64 bytes */
1474 memcpy(((void *)hwdesc
) + 2,
1475 (void *)(skb
->data
), first_hdr_len
);
1476 producer
= get_next_index(producer
, num_txd
);
1479 hwdesc
= &tx_ring
->desc_head
[producer
];
1480 pbuf
= &tx_ring
->cmd_buf_arr
[producer
];
1482 /* copy the next 64 bytes - should be enough except
1483 * for pathological case
1485 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1489 producer
= get_next_index(producer
, num_txd
);
1493 tx_ring
->producer
= producer
;
1494 adapter
->stats
.txbytes
+= skb
->len
;
1496 netxen_nic_update_cmd_producer(adapter
, tx_ring
, producer
);
1498 adapter
->stats
.xmitcalled
++;
1499 netdev
->trans_start
= jiffies
;
1501 return NETDEV_TX_OK
;
1504 adapter
->stats
.txdropped
++;
1505 dev_kfree_skb_any(skb
);
1506 return NETDEV_TX_OK
;
1509 static int netxen_nic_check_temp(struct netxen_adapter
*adapter
)
1511 struct net_device
*netdev
= adapter
->netdev
;
1512 uint32_t temp
, temp_state
, temp_val
;
1515 temp
= NXRD32(adapter
, CRB_TEMP_STATE
);
1517 temp_state
= nx_get_temp_state(temp
);
1518 temp_val
= nx_get_temp_val(temp
);
1520 if (temp_state
== NX_TEMP_PANIC
) {
1522 "%s: Device temperature %d degrees C exceeds"
1523 " maximum allowed. Hardware has been shut down.\n",
1524 netxen_nic_driver_name
, temp_val
);
1526 netif_carrier_off(netdev
);
1527 netif_stop_queue(netdev
);
1529 } else if (temp_state
== NX_TEMP_WARN
) {
1530 if (adapter
->temp
== NX_TEMP_NORMAL
) {
1532 "%s: Device temperature %d degrees C "
1533 "exceeds operating range."
1534 " Immediate action needed.\n",
1535 netxen_nic_driver_name
, temp_val
);
1538 if (adapter
->temp
== NX_TEMP_WARN
) {
1540 "%s: Device temperature is now %d degrees C"
1541 " in normal range.\n", netxen_nic_driver_name
,
1545 adapter
->temp
= temp_state
;
1549 void netxen_advert_link_change(struct netxen_adapter
*adapter
, int linkup
)
1551 struct net_device
*netdev
= adapter
->netdev
;
1553 if (adapter
->ahw
.linkup
&& !linkup
) {
1554 printk(KERN_INFO
"%s: %s NIC Link is down\n",
1555 netxen_nic_driver_name
, netdev
->name
);
1556 adapter
->ahw
.linkup
= 0;
1557 if (netif_running(netdev
)) {
1558 netif_carrier_off(netdev
);
1559 netif_stop_queue(netdev
);
1562 if (!adapter
->has_link_events
)
1563 netxen_nic_set_link_parameters(adapter
);
1565 } else if (!adapter
->ahw
.linkup
&& linkup
) {
1566 printk(KERN_INFO
"%s: %s NIC Link is up\n",
1567 netxen_nic_driver_name
, netdev
->name
);
1568 adapter
->ahw
.linkup
= 1;
1569 if (netif_running(netdev
)) {
1570 netif_carrier_on(netdev
);
1571 netif_wake_queue(netdev
);
1574 if (!adapter
->has_link_events
)
1575 netxen_nic_set_link_parameters(adapter
);
1579 static void netxen_nic_handle_phy_intr(struct netxen_adapter
*adapter
)
1581 u32 val
, port
, linkup
;
1583 port
= adapter
->physical_port
;
1585 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
1586 val
= NXRD32(adapter
, CRB_XG_STATE_P3
);
1587 val
= XG_LINK_STATE_P3(adapter
->ahw
.pci_func
, val
);
1588 linkup
= (val
== XG_LINK_UP_P3
);
1590 val
= NXRD32(adapter
, CRB_XG_STATE
);
1591 if (adapter
->ahw
.port_type
== NETXEN_NIC_GBE
)
1592 linkup
= (val
>> port
) & 1;
1594 val
= (val
>> port
*8) & 0xff;
1595 linkup
= (val
== XG_LINK_UP
);
1599 netxen_advert_link_change(adapter
, linkup
);
1602 static void netxen_watchdog(unsigned long v
)
1604 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1606 SCHEDULE_WORK(&adapter
->watchdog_task
);
1609 void netxen_watchdog_task(struct work_struct
*work
)
1611 struct netxen_adapter
*adapter
=
1612 container_of(work
, struct netxen_adapter
, watchdog_task
);
1614 if ((adapter
->portnum
== 0) && netxen_nic_check_temp(adapter
))
1617 if (!adapter
->has_link_events
)
1618 netxen_nic_handle_phy_intr(adapter
);
1620 if (netif_running(adapter
->netdev
))
1621 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1624 static void netxen_tx_timeout(struct net_device
*netdev
)
1626 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1627 netdev_priv(netdev
);
1628 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1631 static void netxen_tx_timeout_task(struct work_struct
*work
)
1633 struct netxen_adapter
*adapter
=
1634 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1636 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1637 netxen_nic_driver_name
, adapter
->netdev
->name
);
1639 netxen_napi_disable(adapter
);
1641 adapter
->netdev
->trans_start
= jiffies
;
1643 netxen_napi_enable(adapter
);
1644 netif_wake_queue(adapter
->netdev
);
1647 struct net_device_stats
*netxen_nic_get_stats(struct net_device
*netdev
)
1649 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1650 struct net_device_stats
*stats
= &adapter
->net_stats
;
1652 memset(stats
, 0, sizeof(*stats
));
1654 stats
->rx_packets
= adapter
->stats
.no_rcv
;
1655 stats
->tx_packets
= adapter
->stats
.xmitfinished
;
1656 stats
->rx_bytes
= adapter
->stats
.rxbytes
;
1657 stats
->tx_bytes
= adapter
->stats
.txbytes
;
1658 stats
->rx_dropped
= adapter
->stats
.rxdropped
;
1659 stats
->tx_dropped
= adapter
->stats
.txdropped
;
1664 static irqreturn_t
netxen_intr(int irq
, void *data
)
1666 struct nx_host_sds_ring
*sds_ring
= data
;
1667 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
1670 status
= adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1672 if (!(status
& adapter
->legacy_intr
.int_vec_bit
))
1675 if (adapter
->ahw
.revision_id
>= NX_P3_B1
) {
1676 /* check interrupt state machine, to be sure */
1677 status
= adapter
->pci_read_immediate(adapter
,
1679 if (!ISR_LEGACY_INT_TRIGGERED(status
))
1683 unsigned long our_int
= 0;
1685 our_int
= NXRD32(adapter
, CRB_INT_VECTOR
);
1687 /* not our interrupt */
1688 if (!test_and_clear_bit((7 + adapter
->portnum
), &our_int
))
1691 /* claim interrupt */
1692 NXWR32(adapter
, CRB_INT_VECTOR
, (our_int
& 0xffffffff));
1695 /* clear interrupt */
1696 if (adapter
->fw_major
< 4)
1697 netxen_nic_disable_int(sds_ring
);
1699 adapter
->pci_write_immediate(adapter
,
1700 adapter
->legacy_intr
.tgt_status_reg
,
1702 /* read twice to ensure write is flushed */
1703 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1704 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1706 napi_schedule(&sds_ring
->napi
);
1711 static irqreturn_t
netxen_msi_intr(int irq
, void *data
)
1713 struct nx_host_sds_ring
*sds_ring
= data
;
1714 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
1716 /* clear interrupt */
1717 adapter
->pci_write_immediate(adapter
,
1718 adapter
->msi_tgt_status
, 0xffffffff);
1720 napi_schedule(&sds_ring
->napi
);
1724 static irqreturn_t
netxen_msix_intr(int irq
, void *data
)
1726 struct nx_host_sds_ring
*sds_ring
= data
;
1728 napi_schedule(&sds_ring
->napi
);
1732 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
)
1734 struct nx_host_sds_ring
*sds_ring
=
1735 container_of(napi
, struct nx_host_sds_ring
, napi
);
1737 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
1742 tx_complete
= netxen_process_cmd_ring(adapter
);
1744 work_done
= netxen_process_rcv_ring(sds_ring
, budget
);
1746 if ((work_done
< budget
) && tx_complete
) {
1747 napi_complete(&sds_ring
->napi
);
1748 netxen_nic_enable_int(sds_ring
);
1754 #ifdef CONFIG_NET_POLL_CONTROLLER
1755 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1757 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1758 disable_irq(adapter
->irq
);
1759 netxen_intr(adapter
->irq
, adapter
);
1760 enable_irq(adapter
->irq
);
1764 static struct pci_driver netxen_driver
= {
1765 .name
= netxen_nic_driver_name
,
1766 .id_table
= netxen_pci_tbl
,
1767 .probe
= netxen_nic_probe
,
1768 .remove
= __devexit_p(netxen_nic_remove
),
1769 .suspend
= netxen_nic_suspend
,
1770 .resume
= netxen_nic_resume
1773 /* Driver Registration on NetXen card */
1775 static int __init
netxen_init_module(void)
1777 printk(KERN_INFO
"%s\n", netxen_nic_driver_string
);
1779 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == NULL
)
1782 return pci_register_driver(&netxen_driver
);
1785 module_init(netxen_init_module
);
1787 static void __exit
netxen_exit_module(void)
1789 pci_unregister_driver(&netxen_driver
);
1790 destroy_workqueue(netxen_workq
);
1793 module_exit(netxen_exit_module
);