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
)
112 NXWR32(adapter
, tx_ring
->crb_cmd_producer
, tx_ring
->producer
);
114 if (netxen_tx_avail(tx_ring
) <= TX_STOP_THRESH
) {
115 netif_stop_queue(adapter
->netdev
);
120 static uint32_t crb_cmd_consumer
[4] = {
121 CRB_CMD_CONSUMER_OFFSET
, CRB_CMD_CONSUMER_OFFSET_1
,
122 CRB_CMD_CONSUMER_OFFSET_2
, CRB_CMD_CONSUMER_OFFSET_3
126 netxen_nic_update_cmd_consumer(struct netxen_adapter
*adapter
,
127 struct nx_host_tx_ring
*tx_ring
)
129 NXWR32(adapter
, tx_ring
->crb_cmd_consumer
, tx_ring
->sw_consumer
);
132 static uint32_t msi_tgt_status
[8] = {
133 ISR_INT_TARGET_STATUS
, ISR_INT_TARGET_STATUS_F1
,
134 ISR_INT_TARGET_STATUS_F2
, ISR_INT_TARGET_STATUS_F3
,
135 ISR_INT_TARGET_STATUS_F4
, ISR_INT_TARGET_STATUS_F5
,
136 ISR_INT_TARGET_STATUS_F6
, ISR_INT_TARGET_STATUS_F7
139 static struct netxen_legacy_intr_set legacy_intr
[] = NX_LEGACY_INTR_CONFIG
;
141 static inline void netxen_nic_disable_int(struct nx_host_sds_ring
*sds_ring
)
143 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
145 NXWR32(adapter
, sds_ring
->crb_intr_mask
, 0);
148 static inline void netxen_nic_enable_int(struct nx_host_sds_ring
*sds_ring
)
150 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
152 NXWR32(adapter
, sds_ring
->crb_intr_mask
, 0x1);
154 if (!NETXEN_IS_MSI_FAMILY(adapter
))
155 adapter
->pci_write_immediate(adapter
,
156 adapter
->legacy_intr
.tgt_mask_reg
, 0xfbff);
160 netxen_alloc_sds_rings(struct netxen_recv_context
*recv_ctx
, int count
)
162 int size
= sizeof(struct nx_host_sds_ring
) * count
;
164 recv_ctx
->sds_rings
= kzalloc(size
, GFP_KERNEL
);
166 return (recv_ctx
->sds_rings
== NULL
);
170 netxen_free_sds_rings(struct netxen_recv_context
*recv_ctx
)
172 if (recv_ctx
->sds_rings
!= NULL
)
173 kfree(recv_ctx
->sds_rings
);
177 netxen_napi_add(struct netxen_adapter
*adapter
, struct net_device
*netdev
)
180 struct nx_host_sds_ring
*sds_ring
;
181 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
183 if (netxen_alloc_sds_rings(recv_ctx
, adapter
->max_sds_rings
))
186 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
187 sds_ring
= &recv_ctx
->sds_rings
[ring
];
188 netif_napi_add(netdev
, &sds_ring
->napi
,
189 netxen_nic_poll
, NETXEN_NETDEV_WEIGHT
);
196 netxen_napi_enable(struct netxen_adapter
*adapter
)
199 struct nx_host_sds_ring
*sds_ring
;
200 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
202 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
203 sds_ring
= &recv_ctx
->sds_rings
[ring
];
204 napi_enable(&sds_ring
->napi
);
205 netxen_nic_enable_int(sds_ring
);
210 netxen_napi_disable(struct netxen_adapter
*adapter
)
213 struct nx_host_sds_ring
*sds_ring
;
214 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
216 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
217 sds_ring
= &recv_ctx
->sds_rings
[ring
];
218 napi_disable(&sds_ring
->napi
);
219 netxen_nic_disable_int(sds_ring
);
220 synchronize_irq(sds_ring
->irq
);
224 static int nx_set_dma_mask(struct netxen_adapter
*adapter
, uint8_t revision_id
)
226 struct pci_dev
*pdev
= adapter
->pdev
;
227 uint64_t mask
, cmask
;
229 adapter
->pci_using_dac
= 0;
231 mask
= DMA_BIT_MASK(32);
233 * Consistent DMA mask is set to 32 bit because it cannot be set to
234 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
235 * come off this pool.
237 cmask
= DMA_BIT_MASK(32);
240 if (revision_id
>= NX_P3_B0
)
241 mask
= DMA_BIT_MASK(39);
242 else if (revision_id
== NX_P2_C1
)
243 mask
= DMA_BIT_MASK(35);
245 if (pci_set_dma_mask(pdev
, mask
) == 0 &&
246 pci_set_consistent_dma_mask(pdev
, cmask
) == 0) {
247 adapter
->pci_using_dac
= 1;
254 /* Update addressable range if firmware supports it */
256 nx_update_dma_mask(struct netxen_adapter
*adapter
)
258 int change
, shift
, err
;
259 uint64_t mask
, old_mask
;
260 struct pci_dev
*pdev
= adapter
->pdev
;
264 shift
= NXRD32(adapter
, CRB_DMA_SHIFT
);
268 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
) && (shift
> 9))
270 else if ((adapter
->ahw
.revision_id
== NX_P2_C1
) && (shift
<= 4))
274 old_mask
= pdev
->dma_mask
;
275 mask
= (1ULL<<(32+shift
)) - 1;
277 err
= pci_set_dma_mask(pdev
, mask
);
279 return pci_set_dma_mask(pdev
, old_mask
);
285 static void netxen_check_options(struct netxen_adapter
*adapter
)
287 if (adapter
->ahw
.port_type
== NETXEN_NIC_XGBE
)
288 adapter
->num_rxd
= MAX_RCV_DESCRIPTORS_10G
;
289 else if (adapter
->ahw
.port_type
== NETXEN_NIC_GBE
)
290 adapter
->num_rxd
= MAX_RCV_DESCRIPTORS_1G
;
292 adapter
->msix_supported
= 0;
293 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
294 adapter
->msix_supported
= !!use_msi_x
;
295 adapter
->rss_supported
= !!use_msi_x
;
296 } else if (adapter
->fw_version
>= NETXEN_VERSION_CODE(3, 4, 336)) {
297 switch (adapter
->ahw
.board_type
) {
298 case NETXEN_BRDTYPE_P2_SB31_10G
:
299 case NETXEN_BRDTYPE_P2_SB31_10G_CX4
:
300 adapter
->msix_supported
= !!use_msi_x
;
301 adapter
->rss_supported
= !!use_msi_x
;
308 adapter
->num_txd
= MAX_CMD_DESCRIPTORS_HOST
;
309 adapter
->num_jumbo_rxd
= MAX_JUMBO_RCV_DESCRIPTORS
;
310 adapter
->num_lro_rxd
= MAX_LRO_RCV_DESCRIPTORS
;
316 netxen_check_hw_init(struct netxen_adapter
*adapter
, int first_boot
)
320 if (first_boot
== 0x55555555) {
321 /* This is the first boot after power up */
322 NXWR32(adapter
, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC
);
324 if (!NX_IS_REVISION_P2(adapter
->ahw
.revision_id
))
327 /* PCI bus master workaround */
328 first_boot
= NXRD32(adapter
, NETXEN_PCIE_REG(0x4));
329 if (!(first_boot
& 0x4)) {
331 NXWR32(adapter
, NETXEN_PCIE_REG(0x4), first_boot
);
332 first_boot
= NXRD32(adapter
, NETXEN_PCIE_REG(0x4));
335 /* This is the first boot after power up */
336 first_boot
= NXRD32(adapter
, NETXEN_ROMUSB_GLB_SW_RESET
);
337 if (first_boot
!= 0x80000f) {
338 /* clear the register for future unloads/loads */
339 NXWR32(adapter
, NETXEN_CAM_RAM(0x1fc), 0);
343 /* Start P2 boot loader */
344 val
= NXRD32(adapter
, NETXEN_ROMUSB_GLB_PEGTUNE_DONE
);
345 NXWR32(adapter
, NETXEN_ROMUSB_GLB_PEGTUNE_DONE
, val
| 0x1);
349 val
= NXRD32(adapter
, NETXEN_CAM_RAM(0x1fc));
351 if (++timeout
> 5000)
354 } while (val
== NETXEN_BDINFO_MAGIC
);
359 static void netxen_set_port_mode(struct netxen_adapter
*adapter
)
363 val
= adapter
->ahw
.board_type
;
364 if ((val
== NETXEN_BRDTYPE_P3_HMEZ
) ||
365 (val
== NETXEN_BRDTYPE_P3_XG_LOM
)) {
366 if (port_mode
== NETXEN_PORT_MODE_802_3_AP
) {
367 data
= NETXEN_PORT_MODE_802_3_AP
;
368 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
369 } else if (port_mode
== NETXEN_PORT_MODE_XG
) {
370 data
= NETXEN_PORT_MODE_XG
;
371 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
372 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_1G
) {
373 data
= NETXEN_PORT_MODE_AUTO_NEG_1G
;
374 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
375 } else if (port_mode
== NETXEN_PORT_MODE_AUTO_NEG_XG
) {
376 data
= NETXEN_PORT_MODE_AUTO_NEG_XG
;
377 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
379 data
= NETXEN_PORT_MODE_AUTO_NEG
;
380 NXWR32(adapter
, NETXEN_PORT_MODE_ADDR
, data
);
383 if ((wol_port_mode
!= NETXEN_PORT_MODE_802_3_AP
) &&
384 (wol_port_mode
!= NETXEN_PORT_MODE_XG
) &&
385 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_1G
) &&
386 (wol_port_mode
!= NETXEN_PORT_MODE_AUTO_NEG_XG
)) {
387 wol_port_mode
= NETXEN_PORT_MODE_AUTO_NEG
;
389 NXWR32(adapter
, NETXEN_WOL_PORT_MODE
, wol_port_mode
);
393 static void netxen_set_msix_bit(struct pci_dev
*pdev
, int enable
)
398 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSIX
);
400 pci_read_config_dword(pdev
, pos
, &control
);
402 control
|= PCI_MSIX_FLAGS_ENABLE
;
405 pci_write_config_dword(pdev
, pos
, control
);
409 static void netxen_init_msix_entries(struct netxen_adapter
*adapter
, int count
)
413 for (i
= 0; i
< count
; i
++)
414 adapter
->msix_entries
[i
].entry
= i
;
418 netxen_read_mac_addr(struct netxen_adapter
*adapter
)
423 struct net_device
*netdev
= adapter
->netdev
;
424 struct pci_dev
*pdev
= adapter
->pdev
;
426 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
427 if (netxen_p3_get_mac_addr(adapter
, &mac_addr
) != 0)
430 if (netxen_get_flash_mac_addr(adapter
, &mac_addr
) != 0)
434 p
= (unsigned char *)&mac_addr
;
435 for (i
= 0; i
< 6; i
++)
436 netdev
->dev_addr
[i
] = *(p
+ 5 - i
);
438 memcpy(netdev
->perm_addr
, netdev
->dev_addr
, netdev
->addr_len
);
440 /* set station address */
442 if (!is_valid_ether_addr(netdev
->perm_addr
))
443 dev_warn(&pdev
->dev
, "Bad MAC address %pM.\n", netdev
->dev_addr
);
448 int netxen_nic_set_mac(struct net_device
*netdev
, void *p
)
450 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
451 struct sockaddr
*addr
= p
;
453 if (!is_valid_ether_addr(addr
->sa_data
))
456 if (netif_running(netdev
)) {
457 netif_device_detach(netdev
);
458 netxen_napi_disable(adapter
);
461 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
462 adapter
->macaddr_set(adapter
, addr
->sa_data
);
464 if (netif_running(netdev
)) {
465 netif_device_attach(netdev
);
466 netxen_napi_enable(adapter
);
471 static void netxen_set_multicast_list(struct net_device
*dev
)
473 struct netxen_adapter
*adapter
= netdev_priv(dev
);
475 adapter
->set_multi(dev
);
478 static const struct net_device_ops netxen_netdev_ops
= {
479 .ndo_open
= netxen_nic_open
,
480 .ndo_stop
= netxen_nic_close
,
481 .ndo_start_xmit
= netxen_nic_xmit_frame
,
482 .ndo_get_stats
= netxen_nic_get_stats
,
483 .ndo_validate_addr
= eth_validate_addr
,
484 .ndo_set_multicast_list
= netxen_set_multicast_list
,
485 .ndo_set_mac_address
= netxen_nic_set_mac
,
486 .ndo_change_mtu
= netxen_nic_change_mtu
,
487 .ndo_tx_timeout
= netxen_tx_timeout
,
488 #ifdef CONFIG_NET_POLL_CONTROLLER
489 .ndo_poll_controller
= netxen_nic_poll_controller
,
494 netxen_setup_intr(struct netxen_adapter
*adapter
)
496 struct netxen_legacy_intr_set
*legacy_intrp
;
497 struct pci_dev
*pdev
= adapter
->pdev
;
500 if (adapter
->rss_supported
) {
501 num_msix
= (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER
) ?
502 MSIX_ENTRIES_PER_ADAPTER
: 2;
506 adapter
->max_sds_rings
= 1;
508 adapter
->flags
&= ~(NETXEN_NIC_MSI_ENABLED
| NETXEN_NIC_MSIX_ENABLED
);
510 if (adapter
->ahw
.revision_id
>= NX_P3_B0
)
511 legacy_intrp
= &legacy_intr
[adapter
->ahw
.pci_func
];
513 legacy_intrp
= &legacy_intr
[0];
514 adapter
->legacy_intr
.int_vec_bit
= legacy_intrp
->int_vec_bit
;
515 adapter
->legacy_intr
.tgt_status_reg
= legacy_intrp
->tgt_status_reg
;
516 adapter
->legacy_intr
.tgt_mask_reg
= legacy_intrp
->tgt_mask_reg
;
517 adapter
->legacy_intr
.pci_int_reg
= legacy_intrp
->pci_int_reg
;
519 netxen_set_msix_bit(pdev
, 0);
521 if (adapter
->msix_supported
) {
523 netxen_init_msix_entries(adapter
, num_msix
);
524 err
= pci_enable_msix(pdev
, adapter
->msix_entries
, num_msix
);
526 adapter
->flags
|= NETXEN_NIC_MSIX_ENABLED
;
527 netxen_set_msix_bit(pdev
, 1);
529 if (adapter
->rss_supported
)
530 adapter
->max_sds_rings
= num_msix
;
532 dev_info(&pdev
->dev
, "using msi-x interrupts\n");
537 pci_disable_msix(pdev
);
539 /* fall through for msi */
542 if (use_msi
&& !pci_enable_msi(pdev
)) {
543 adapter
->flags
|= NETXEN_NIC_MSI_ENABLED
;
544 adapter
->msi_tgt_status
=
545 msi_tgt_status
[adapter
->ahw
.pci_func
];
546 dev_info(&pdev
->dev
, "using msi interrupts\n");
547 adapter
->msix_entries
[0].vector
= pdev
->irq
;
551 dev_info(&pdev
->dev
, "using legacy interrupts\n");
552 adapter
->msix_entries
[0].vector
= pdev
->irq
;
556 netxen_teardown_intr(struct netxen_adapter
*adapter
)
558 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
559 pci_disable_msix(adapter
->pdev
);
560 if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
561 pci_disable_msi(adapter
->pdev
);
565 netxen_cleanup_pci_map(struct netxen_adapter
*adapter
)
567 if (adapter
->ahw
.db_base
!= NULL
)
568 iounmap(adapter
->ahw
.db_base
);
569 if (adapter
->ahw
.pci_base0
!= NULL
)
570 iounmap(adapter
->ahw
.pci_base0
);
571 if (adapter
->ahw
.pci_base1
!= NULL
)
572 iounmap(adapter
->ahw
.pci_base1
);
573 if (adapter
->ahw
.pci_base2
!= NULL
)
574 iounmap(adapter
->ahw
.pci_base2
);
578 netxen_setup_pci_map(struct netxen_adapter
*adapter
)
580 void __iomem
*mem_ptr0
= NULL
;
581 void __iomem
*mem_ptr1
= NULL
;
582 void __iomem
*mem_ptr2
= NULL
;
583 void __iomem
*db_ptr
= NULL
;
585 unsigned long mem_base
, mem_len
, db_base
, db_len
= 0, pci_len0
= 0;
587 struct pci_dev
*pdev
= adapter
->pdev
;
588 int pci_func
= adapter
->ahw
.pci_func
;
593 * Set the CRB window to invalid. If any register in window 0 is
594 * accessed it should set the window to 0 and then reset it to 1.
596 adapter
->curr_window
= 255;
597 adapter
->ahw
.qdr_sn_window
= -1;
598 adapter
->ahw
.ddr_mn_window
= -1;
600 /* remap phys address */
601 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
602 mem_len
= pci_resource_len(pdev
, 0);
605 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_128M
;
606 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_128M
;
607 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_128M
;
608 adapter
->pci_write_immediate
= netxen_nic_pci_write_immediate_128M
;
609 adapter
->pci_set_window
= netxen_nic_pci_set_window_128M
;
610 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_128M
;
611 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_128M
;
613 /* 128 Meg of memory */
614 if (mem_len
== NETXEN_PCI_128MB_SIZE
) {
615 mem_ptr0
= ioremap(mem_base
, FIRST_PAGE_GROUP_SIZE
);
616 mem_ptr1
= ioremap(mem_base
+ SECOND_PAGE_GROUP_START
,
617 SECOND_PAGE_GROUP_SIZE
);
618 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
,
619 THIRD_PAGE_GROUP_SIZE
);
620 } else if (mem_len
== NETXEN_PCI_32MB_SIZE
) {
621 mem_ptr1
= ioremap(mem_base
, SECOND_PAGE_GROUP_SIZE
);
622 mem_ptr2
= ioremap(mem_base
+ THIRD_PAGE_GROUP_START
-
623 SECOND_PAGE_GROUP_START
, THIRD_PAGE_GROUP_SIZE
);
624 } else if (mem_len
== NETXEN_PCI_2MB_SIZE
) {
625 adapter
->hw_write_wx
= netxen_nic_hw_write_wx_2M
;
626 adapter
->hw_read_wx
= netxen_nic_hw_read_wx_2M
;
627 adapter
->pci_read_immediate
= netxen_nic_pci_read_immediate_2M
;
628 adapter
->pci_write_immediate
=
629 netxen_nic_pci_write_immediate_2M
;
630 adapter
->pci_set_window
= netxen_nic_pci_set_window_2M
;
631 adapter
->pci_mem_read
= netxen_nic_pci_mem_read_2M
;
632 adapter
->pci_mem_write
= netxen_nic_pci_mem_write_2M
;
634 mem_ptr0
= pci_ioremap_bar(pdev
, 0);
635 if (mem_ptr0
== NULL
) {
636 dev_err(&pdev
->dev
, "failed to map PCI bar 0\n");
641 adapter
->ahw
.ddr_mn_window
= 0;
642 adapter
->ahw
.qdr_sn_window
= 0;
644 adapter
->ahw
.mn_win_crb
= 0x100000 + PCIX_MN_WINDOW
+
646 adapter
->ahw
.ms_win_crb
= 0x100000 + PCIX_SN_WINDOW
;
648 adapter
->ahw
.ms_win_crb
+= (pci_func
* 0x20);
650 adapter
->ahw
.ms_win_crb
+=
651 0xA0 + ((pci_func
- 4) * 0x10);
656 dev_info(&pdev
->dev
, "%dMB memory map\n", (int)(mem_len
>>20));
658 adapter
->ahw
.pci_base0
= mem_ptr0
;
659 adapter
->ahw
.pci_len0
= pci_len0
;
660 adapter
->ahw
.pci_base1
= mem_ptr1
;
661 adapter
->ahw
.pci_base2
= mem_ptr2
;
663 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
666 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
667 db_len
= pci_resource_len(pdev
, 4);
670 printk(KERN_ERR
"%s: doorbell is disabled\n",
671 netxen_nic_driver_name
);
676 db_ptr
= ioremap(db_base
, NETXEN_DB_MAPSIZE_BYTES
);
678 printk(KERN_ERR
"%s: Failed to allocate doorbell map.",
679 netxen_nic_driver_name
);
685 adapter
->ahw
.db_base
= db_ptr
;
686 adapter
->ahw
.db_len
= db_len
;
690 netxen_cleanup_pci_map(adapter
);
695 netxen_start_firmware(struct netxen_adapter
*adapter
, int request_fw
)
697 int val
, err
, first_boot
;
698 struct pci_dev
*pdev
= adapter
->pdev
;
700 int first_driver
= 0;
702 if (NX_IS_REVISION_P2(adapter
->ahw
.revision_id
))
703 first_driver
= (adapter
->portnum
== 0);
705 first_driver
= (adapter
->ahw
.pci_func
== 0);
710 first_boot
= NXRD32(adapter
, NETXEN_CAM_RAM(0x1fc));
712 err
= netxen_check_hw_init(adapter
, first_boot
);
714 dev_err(&pdev
->dev
, "error in init HW init sequence\n");
719 netxen_request_firmware(adapter
);
721 err
= netxen_need_fw_reset(adapter
);
725 if (first_boot
!= 0x55555555) {
726 NXWR32(adapter
, CRB_CMDPEG_STATE
, 0);
727 netxen_pinit_from_rom(adapter
, 0);
731 NXWR32(adapter
, CRB_DMA_SHIFT
, 0x55555555);
732 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
733 netxen_set_port_mode(adapter
);
735 netxen_load_firmware(adapter
);
737 if (NX_IS_REVISION_P2(adapter
->ahw
.revision_id
)) {
739 /* Initialize multicast addr pool owners */
741 if (adapter
->ahw
.port_type
== NETXEN_NIC_XGBE
)
743 NXWR32(adapter
, NETXEN_MAC_ADDR_CNTL_REG
, val
);
747 err
= netxen_initialize_adapter_offload(adapter
);
752 * Tell the hardware our version number.
754 val
= (_NETXEN_NIC_LINUX_MAJOR
<< 16)
755 | ((_NETXEN_NIC_LINUX_MINOR
<< 8))
756 | (_NETXEN_NIC_LINUX_SUBVERSION
);
757 NXWR32(adapter
, CRB_DRIVER_VERSION
, val
);
760 /* Handshake with the card before we register the devices. */
761 err
= netxen_phantom_init(adapter
, NETXEN_NIC_PEG_TUNE
);
763 netxen_free_adapter_offload(adapter
);
771 netxen_nic_request_irq(struct netxen_adapter
*adapter
)
773 irq_handler_t handler
;
774 struct nx_host_sds_ring
*sds_ring
;
777 unsigned long flags
= IRQF_SAMPLE_RANDOM
;
778 struct net_device
*netdev
= adapter
->netdev
;
779 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
781 if (adapter
->flags
& NETXEN_NIC_MSIX_ENABLED
)
782 handler
= netxen_msix_intr
;
783 else if (adapter
->flags
& NETXEN_NIC_MSI_ENABLED
)
784 handler
= netxen_msi_intr
;
786 flags
|= IRQF_SHARED
;
787 handler
= netxen_intr
;
789 adapter
->irq
= netdev
->irq
;
791 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
792 sds_ring
= &recv_ctx
->sds_rings
[ring
];
793 sprintf(sds_ring
->name
, "%s[%d]", netdev
->name
, ring
);
794 err
= request_irq(sds_ring
->irq
, handler
,
795 flags
, sds_ring
->name
, sds_ring
);
804 netxen_nic_free_irq(struct netxen_adapter
*adapter
)
807 struct nx_host_sds_ring
*sds_ring
;
809 struct netxen_recv_context
*recv_ctx
= &adapter
->recv_ctx
;
811 for (ring
= 0; ring
< adapter
->max_sds_rings
; ring
++) {
812 sds_ring
= &recv_ctx
->sds_rings
[ring
];
813 free_irq(sds_ring
->irq
, sds_ring
);
818 netxen_nic_up(struct netxen_adapter
*adapter
, struct net_device
*netdev
)
822 err
= adapter
->init_port(adapter
, adapter
->physical_port
);
824 printk(KERN_ERR
"%s: Failed to initialize port %d\n",
825 netxen_nic_driver_name
, adapter
->portnum
);
828 if (NX_IS_REVISION_P2(adapter
->ahw
.revision_id
))
829 adapter
->macaddr_set(adapter
, netdev
->dev_addr
);
831 adapter
->set_multi(netdev
);
832 adapter
->set_mtu(adapter
, netdev
->mtu
);
834 adapter
->ahw
.linkup
= 0;
836 netxen_napi_enable(adapter
);
838 if (adapter
->max_sds_rings
> 1)
839 netxen_config_rss(adapter
, 1);
841 if (adapter
->capabilities
& NX_FW_CAPABILITY_LINK_NOTIFICATION
)
842 netxen_linkevent_request(adapter
, 1);
844 netxen_nic_set_link_parameters(adapter
);
846 mod_timer(&adapter
->watchdog_timer
, jiffies
);
852 netxen_nic_down(struct netxen_adapter
*adapter
, struct net_device
*netdev
)
854 netif_carrier_off(netdev
);
855 netif_stop_queue(netdev
);
857 if (adapter
->stop_port
)
858 adapter
->stop_port(adapter
);
860 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
))
861 netxen_p3_free_mac_list(adapter
);
863 netxen_napi_disable(adapter
);
865 netxen_release_tx_buffers(adapter
);
867 FLUSH_SCHEDULED_WORK();
868 del_timer_sync(&adapter
->watchdog_timer
);
873 netxen_nic_attach(struct netxen_adapter
*adapter
)
875 struct net_device
*netdev
= adapter
->netdev
;
876 struct pci_dev
*pdev
= adapter
->pdev
;
878 struct nx_host_rds_ring
*rds_ring
;
879 struct nx_host_tx_ring
*tx_ring
;
881 err
= netxen_init_firmware(adapter
);
883 printk(KERN_ERR
"Failed to init firmware\n");
887 if (adapter
->fw_major
< 4)
888 adapter
->max_rds_rings
= 3;
890 adapter
->max_rds_rings
= 2;
892 err
= netxen_alloc_sw_resources(adapter
);
894 printk(KERN_ERR
"%s: Error in setting sw resources\n",
899 netxen_nic_clear_stats(adapter
);
901 err
= netxen_alloc_hw_resources(adapter
);
903 printk(KERN_ERR
"%s: Error in setting hw resources\n",
905 goto err_out_free_sw
;
908 if (adapter
->fw_major
< 4) {
909 tx_ring
= adapter
->tx_ring
;
910 tx_ring
->crb_cmd_producer
= crb_cmd_producer
[adapter
->portnum
];
911 tx_ring
->crb_cmd_consumer
= crb_cmd_consumer
[adapter
->portnum
];
913 tx_ring
->producer
= 0;
914 tx_ring
->sw_consumer
= 0;
916 netxen_nic_update_cmd_producer(adapter
, tx_ring
);
917 netxen_nic_update_cmd_consumer(adapter
, tx_ring
);
920 for (ring
= 0; ring
< adapter
->max_rds_rings
; ring
++) {
921 rds_ring
= &adapter
->recv_ctx
.rds_rings
[ring
];
922 netxen_post_rx_buffers(adapter
, ring
, rds_ring
);
925 err
= netxen_nic_request_irq(adapter
);
927 dev_err(&pdev
->dev
, "%s: failed to setup interrupt\n",
929 goto err_out_free_rxbuf
;
932 adapter
->is_up
= NETXEN_ADAPTER_UP_MAGIC
;
936 netxen_release_rx_buffers(adapter
);
937 netxen_free_hw_resources(adapter
);
939 netxen_free_sw_resources(adapter
);
944 netxen_nic_detach(struct netxen_adapter
*adapter
)
946 netxen_release_rx_buffers(adapter
);
947 netxen_free_hw_resources(adapter
);
948 netxen_nic_free_irq(adapter
);
949 netxen_free_sw_resources(adapter
);
955 netxen_nic_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
957 struct net_device
*netdev
= NULL
;
958 struct netxen_adapter
*adapter
= NULL
;
960 int pci_func_id
= PCI_FUNC(pdev
->devfn
);
963 if (pdev
->class != 0x020000) {
964 printk(KERN_DEBUG
"NetXen function %d, class %x will not "
965 "be enabled.\n",pci_func_id
, pdev
->class);
969 if (pdev
->revision
>= NX_P3_A0
&& pdev
->revision
< NX_P3_B1
) {
970 printk(KERN_WARNING
"NetXen chip revisions between 0x%x-0x%x"
971 "will not be enabled.\n",
976 if ((err
= pci_enable_device(pdev
)))
979 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
981 goto err_out_disable_pdev
;
984 if ((err
= pci_request_regions(pdev
, netxen_nic_driver_name
)))
985 goto err_out_disable_pdev
;
987 pci_set_master(pdev
);
989 netdev
= alloc_etherdev(sizeof(struct netxen_adapter
));
991 printk(KERN_ERR
"%s: Failed to allocate memory for the "
992 "device block.Check system memory resource"
993 " usage.\n", netxen_nic_driver_name
);
994 goto err_out_free_res
;
997 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
999 adapter
= netdev_priv(netdev
);
1000 adapter
->netdev
= netdev
;
1001 adapter
->pdev
= pdev
;
1002 adapter
->ahw
.pci_func
= pci_func_id
;
1004 revision_id
= pdev
->revision
;
1005 adapter
->ahw
.revision_id
= revision_id
;
1007 err
= nx_set_dma_mask(adapter
, revision_id
);
1009 goto err_out_free_netdev
;
1011 rwlock_init(&adapter
->adapter_lock
);
1012 spin_lock_init(&adapter
->tx_clean_lock
);
1013 INIT_LIST_HEAD(&adapter
->mac_list
);
1015 err
= netxen_setup_pci_map(adapter
);
1017 goto err_out_free_netdev
;
1019 /* This will be reset for mezz cards */
1020 adapter
->portnum
= pci_func_id
;
1021 adapter
->rx_csum
= 1;
1022 adapter
->mc_enabled
= 0;
1023 if (NX_IS_REVISION_P3(revision_id
))
1024 adapter
->max_mc_count
= 38;
1026 adapter
->max_mc_count
= 16;
1028 netdev
->netdev_ops
= &netxen_netdev_ops
;
1029 netdev
->watchdog_timeo
= 2*HZ
;
1031 netxen_nic_change_mtu(netdev
, netdev
->mtu
);
1033 SET_ETHTOOL_OPS(netdev
, &netxen_nic_ethtool_ops
);
1035 netdev
->features
|= (NETIF_F_SG
| NETIF_F_IP_CSUM
| NETIF_F_TSO
);
1036 netdev
->features
|= (NETIF_F_GRO
);
1037 netdev
->vlan_features
|= (NETIF_F_SG
| NETIF_F_IP_CSUM
| NETIF_F_TSO
);
1039 if (NX_IS_REVISION_P3(revision_id
)) {
1040 netdev
->features
|= (NETIF_F_IPV6_CSUM
| NETIF_F_TSO6
);
1041 netdev
->vlan_features
|= (NETIF_F_IPV6_CSUM
| NETIF_F_TSO6
);
1044 if (adapter
->pci_using_dac
) {
1045 netdev
->features
|= NETIF_F_HIGHDMA
;
1046 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
1049 if (netxen_nic_get_board_info(adapter
) != 0) {
1050 printk("%s: Error getting board config info.\n",
1051 netxen_nic_driver_name
);
1053 goto err_out_iounmap
;
1056 netxen_initialize_adapter_ops(adapter
);
1058 /* Mezz cards have PCI function 0,2,3 enabled */
1059 switch (adapter
->ahw
.board_type
) {
1060 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ
:
1061 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ
:
1062 if (pci_func_id
>= 2)
1063 adapter
->portnum
= pci_func_id
- 2;
1069 err
= netxen_start_firmware(adapter
, 1);
1071 goto err_out_iounmap
;
1073 nx_update_dma_mask(adapter
);
1075 netxen_nic_get_firmware_info(adapter
);
1078 * See if the firmware gave us a virtual-physical port mapping.
1080 adapter
->physical_port
= adapter
->portnum
;
1081 if (adapter
->fw_major
< 4) {
1082 i
= NXRD32(adapter
, CRB_V2P(adapter
->portnum
));
1083 if (i
!= 0x55555555)
1084 adapter
->physical_port
= i
;
1087 netxen_check_options(adapter
);
1089 netxen_setup_intr(adapter
);
1091 netdev
->irq
= adapter
->msix_entries
[0].vector
;
1093 if (netxen_napi_add(adapter
, netdev
))
1094 goto err_out_disable_msi
;
1096 init_timer(&adapter
->watchdog_timer
);
1097 adapter
->watchdog_timer
.function
= &netxen_watchdog
;
1098 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
1099 INIT_WORK(&adapter
->watchdog_task
, netxen_watchdog_task
);
1100 INIT_WORK(&adapter
->tx_timeout_task
, netxen_tx_timeout_task
);
1102 err
= netxen_read_mac_addr(adapter
);
1104 dev_warn(&pdev
->dev
, "failed to read mac addr\n");
1106 netif_carrier_off(netdev
);
1107 netif_stop_queue(netdev
);
1109 if ((err
= register_netdev(netdev
))) {
1110 printk(KERN_ERR
"%s: register_netdev failed port #%d"
1111 " aborting\n", netxen_nic_driver_name
,
1114 goto err_out_disable_msi
;
1117 pci_set_drvdata(pdev
, adapter
);
1119 switch (adapter
->ahw
.port_type
) {
1120 case NETXEN_NIC_GBE
:
1121 dev_info(&adapter
->pdev
->dev
, "%s: GbE port initialized\n",
1122 adapter
->netdev
->name
);
1124 case NETXEN_NIC_XGBE
:
1125 dev_info(&adapter
->pdev
->dev
, "%s: XGbE port initialized\n",
1126 adapter
->netdev
->name
);
1132 err_out_disable_msi
:
1133 netxen_teardown_intr(adapter
);
1135 netxen_free_adapter_offload(adapter
);
1138 netxen_cleanup_pci_map(adapter
);
1140 err_out_free_netdev
:
1141 free_netdev(netdev
);
1144 pci_release_regions(pdev
);
1146 err_out_disable_pdev
:
1147 pci_set_drvdata(pdev
, NULL
);
1148 pci_disable_device(pdev
);
1152 static void __devexit
netxen_nic_remove(struct pci_dev
*pdev
)
1154 struct netxen_adapter
*adapter
;
1155 struct net_device
*netdev
;
1157 adapter
= pci_get_drvdata(pdev
);
1158 if (adapter
== NULL
)
1161 netdev
= adapter
->netdev
;
1163 unregister_netdev(netdev
);
1165 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
) {
1166 netxen_nic_detach(adapter
);
1169 if (adapter
->portnum
== 0)
1170 netxen_free_adapter_offload(adapter
);
1172 netxen_teardown_intr(adapter
);
1173 netxen_free_sds_rings(&adapter
->recv_ctx
);
1175 netxen_cleanup_pci_map(adapter
);
1177 netxen_release_firmware(adapter
);
1179 pci_release_regions(pdev
);
1180 pci_disable_device(pdev
);
1181 pci_set_drvdata(pdev
, NULL
);
1183 free_netdev(netdev
);
1188 netxen_nic_suspend(struct pci_dev
*pdev
, pm_message_t state
)
1191 struct netxen_adapter
*adapter
= pci_get_drvdata(pdev
);
1192 struct net_device
*netdev
= adapter
->netdev
;
1194 netif_device_detach(netdev
);
1196 if (netif_running(netdev
))
1197 netxen_nic_down(adapter
, netdev
);
1199 if (adapter
->is_up
== NETXEN_ADAPTER_UP_MAGIC
)
1200 netxen_nic_detach(adapter
);
1202 pci_save_state(pdev
);
1204 if (netxen_nic_wol_supported(adapter
)) {
1205 pci_enable_wake(pdev
, PCI_D3cold
, 1);
1206 pci_enable_wake(pdev
, PCI_D3hot
, 1);
1209 pci_disable_device(pdev
);
1210 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
1216 netxen_nic_resume(struct pci_dev
*pdev
)
1218 struct netxen_adapter
*adapter
= pci_get_drvdata(pdev
);
1219 struct net_device
*netdev
= adapter
->netdev
;
1222 pci_set_power_state(pdev
, PCI_D0
);
1223 pci_restore_state(pdev
);
1225 err
= pci_enable_device(pdev
);
1229 adapter
->curr_window
= 255;
1231 err
= netxen_start_firmware(adapter
, 0);
1233 dev_err(&pdev
->dev
, "failed to start firmware\n");
1237 if (netif_running(netdev
)) {
1238 err
= netxen_nic_attach(adapter
);
1242 err
= netxen_nic_up(adapter
, netdev
);
1246 netif_device_attach(netdev
);
1253 static int netxen_nic_open(struct net_device
*netdev
)
1255 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1258 if (adapter
->driver_mismatch
)
1261 if (adapter
->is_up
!= NETXEN_ADAPTER_UP_MAGIC
) {
1262 err
= netxen_nic_attach(adapter
);
1267 err
= netxen_nic_up(adapter
, netdev
);
1271 netif_start_queue(netdev
);
1276 netxen_nic_detach(adapter
);
1281 * netxen_nic_close - Disables a network interface entry point
1283 static int netxen_nic_close(struct net_device
*netdev
)
1285 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1287 netxen_nic_down(adapter
, netdev
);
1291 static bool netxen_tso_check(struct net_device
*netdev
,
1292 struct cmd_desc_type0
*desc
, struct sk_buff
*skb
)
1295 u8 opcode
= TX_ETHER_PKT
;
1296 __be16 protocol
= skb
->protocol
;
1299 if (protocol
== cpu_to_be16(ETH_P_8021Q
)) {
1300 struct vlan_ethhdr
*vh
= (struct vlan_ethhdr
*)skb
->data
;
1301 protocol
= vh
->h_vlan_encapsulated_proto
;
1302 flags
= FLAGS_VLAN_TAGGED
;
1305 if ((netdev
->features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) &&
1306 skb_shinfo(skb
)->gso_size
> 0) {
1308 desc
->mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
1309 desc
->total_hdr_length
=
1310 skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1312 opcode
= (protocol
== cpu_to_be16(ETH_P_IPV6
)) ?
1313 TX_TCP_LSO6
: TX_TCP_LSO
;
1316 } else if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
1319 if (protocol
== cpu_to_be16(ETH_P_IP
)) {
1320 l4proto
= ip_hdr(skb
)->protocol
;
1322 if (l4proto
== IPPROTO_TCP
)
1323 opcode
= TX_TCP_PKT
;
1324 else if(l4proto
== IPPROTO_UDP
)
1325 opcode
= TX_UDP_PKT
;
1326 } else if (protocol
== cpu_to_be16(ETH_P_IPV6
)) {
1327 l4proto
= ipv6_hdr(skb
)->nexthdr
;
1329 if (l4proto
== IPPROTO_TCP
)
1330 opcode
= TX_TCPV6_PKT
;
1331 else if(l4proto
== IPPROTO_UDP
)
1332 opcode
= TX_UDPV6_PKT
;
1335 desc
->tcp_hdr_offset
= skb_transport_offset(skb
);
1336 desc
->ip_hdr_offset
= skb_network_offset(skb
);
1337 netxen_set_tx_flags_opcode(desc
, flags
, opcode
);
1342 netxen_clean_tx_dma_mapping(struct pci_dev
*pdev
,
1343 struct netxen_cmd_buffer
*pbuf
, int last
)
1346 struct netxen_skb_frag
*buffrag
;
1348 buffrag
= &pbuf
->frag_array
[0];
1349 pci_unmap_single(pdev
, buffrag
->dma
,
1350 buffrag
->length
, PCI_DMA_TODEVICE
);
1352 for (k
= 1; k
< last
; k
++) {
1353 buffrag
= &pbuf
->frag_array
[k
];
1354 pci_unmap_page(pdev
, buffrag
->dma
,
1355 buffrag
->length
, PCI_DMA_TODEVICE
);
1360 netxen_clear_cmddesc(u64
*desc
)
1363 for (i
= 0; i
< 8; i
++)
1368 netxen_nic_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
1370 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1371 struct nx_host_tx_ring
*tx_ring
= adapter
->tx_ring
;
1372 unsigned int first_seg_len
= skb
->len
- skb
->data_len
;
1373 struct netxen_cmd_buffer
*pbuf
;
1374 struct netxen_skb_frag
*buffrag
;
1375 struct cmd_desc_type0
*hwdesc
;
1376 struct pci_dev
*pdev
= adapter
->pdev
;
1377 dma_addr_t temp_dma
;
1381 int frag_count
, no_of_desc
;
1382 u32 num_txd
= tx_ring
->num_desc
;
1383 bool is_tso
= false;
1385 frag_count
= skb_shinfo(skb
)->nr_frags
+ 1;
1387 /* 4 fragments per cmd des */
1388 no_of_desc
= (frag_count
+ 3) >> 2;
1390 if (unlikely(no_of_desc
+ 2) > netxen_tx_avail(tx_ring
)) {
1391 netif_stop_queue(netdev
);
1392 return NETDEV_TX_BUSY
;
1395 producer
= tx_ring
->producer
;
1397 hwdesc
= &tx_ring
->desc_head
[producer
];
1398 netxen_clear_cmddesc((u64
*)hwdesc
);
1399 pbuf
= &tx_ring
->cmd_buf_arr
[producer
];
1401 is_tso
= netxen_tso_check(netdev
, hwdesc
, skb
);
1404 pbuf
->frag_count
= frag_count
;
1405 buffrag
= &pbuf
->frag_array
[0];
1406 temp_dma
= pci_map_single(pdev
, skb
->data
, first_seg_len
,
1408 if (pci_dma_mapping_error(pdev
, temp_dma
))
1411 buffrag
->dma
= temp_dma
;
1412 buffrag
->length
= first_seg_len
;
1413 netxen_set_tx_frags_len(hwdesc
, frag_count
, skb
->len
);
1414 netxen_set_tx_port(hwdesc
, adapter
->portnum
);
1416 hwdesc
->buffer_length
[0] = cpu_to_le16(first_seg_len
);
1417 hwdesc
->addr_buffer1
= cpu_to_le64(buffrag
->dma
);
1419 for (i
= 1, k
= 1; i
< frag_count
; i
++, k
++) {
1420 struct skb_frag_struct
*frag
;
1422 unsigned long offset
;
1424 /* move to next desc. if there is a need */
1425 if ((i
& 0x3) == 0) {
1427 producer
= get_next_index(producer
, num_txd
);
1428 hwdesc
= &tx_ring
->desc_head
[producer
];
1429 netxen_clear_cmddesc((u64
*)hwdesc
);
1430 pbuf
= &tx_ring
->cmd_buf_arr
[producer
];
1433 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
1435 offset
= frag
->page_offset
;
1438 temp_dma
= pci_map_page(pdev
, frag
->page
, offset
,
1439 len
, PCI_DMA_TODEVICE
);
1440 if (pci_dma_mapping_error(pdev
, temp_dma
)) {
1441 netxen_clean_tx_dma_mapping(pdev
, pbuf
, i
);
1446 buffrag
->dma
= temp_dma
;
1447 buffrag
->length
= temp_len
;
1449 hwdesc
->buffer_length
[k
] = cpu_to_le16(temp_len
);
1452 hwdesc
->addr_buffer1
= cpu_to_le64(temp_dma
);
1455 hwdesc
->addr_buffer2
= cpu_to_le64(temp_dma
);
1458 hwdesc
->addr_buffer3
= cpu_to_le64(temp_dma
);
1461 hwdesc
->addr_buffer4
= cpu_to_le64(temp_dma
);
1466 producer
= get_next_index(producer
, num_txd
);
1468 /* For LSO, we need to copy the MAC/IP/TCP headers into
1469 * the descriptor ring
1472 int hdr_len
, first_hdr_len
, more_hdr
;
1473 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1474 if (hdr_len
> (sizeof(struct cmd_desc_type0
) - 2)) {
1475 first_hdr_len
= sizeof(struct cmd_desc_type0
) - 2;
1478 first_hdr_len
= hdr_len
;
1481 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1482 hwdesc
= &tx_ring
->desc_head
[producer
];
1483 pbuf
= &tx_ring
->cmd_buf_arr
[producer
];
1486 /* copy the first 64 bytes */
1487 memcpy(((void *)hwdesc
) + 2,
1488 (void *)(skb
->data
), first_hdr_len
);
1489 producer
= get_next_index(producer
, num_txd
);
1492 hwdesc
= &tx_ring
->desc_head
[producer
];
1493 pbuf
= &tx_ring
->cmd_buf_arr
[producer
];
1495 /* copy the next 64 bytes - should be enough except
1496 * for pathological case
1498 skb_copy_from_linear_data_offset(skb
, first_hdr_len
,
1502 producer
= get_next_index(producer
, num_txd
);
1506 tx_ring
->producer
= producer
;
1507 adapter
->stats
.txbytes
+= skb
->len
;
1509 netxen_nic_update_cmd_producer(adapter
, tx_ring
);
1511 adapter
->stats
.xmitcalled
++;
1513 return NETDEV_TX_OK
;
1516 adapter
->stats
.txdropped
++;
1517 dev_kfree_skb_any(skb
);
1518 return NETDEV_TX_OK
;
1521 static int netxen_nic_check_temp(struct netxen_adapter
*adapter
)
1523 struct net_device
*netdev
= adapter
->netdev
;
1524 uint32_t temp
, temp_state
, temp_val
;
1527 temp
= NXRD32(adapter
, CRB_TEMP_STATE
);
1529 temp_state
= nx_get_temp_state(temp
);
1530 temp_val
= nx_get_temp_val(temp
);
1532 if (temp_state
== NX_TEMP_PANIC
) {
1534 "%s: Device temperature %d degrees C exceeds"
1535 " maximum allowed. Hardware has been shut down.\n",
1536 netxen_nic_driver_name
, temp_val
);
1538 netif_carrier_off(netdev
);
1539 netif_stop_queue(netdev
);
1541 } else if (temp_state
== NX_TEMP_WARN
) {
1542 if (adapter
->temp
== NX_TEMP_NORMAL
) {
1544 "%s: Device temperature %d degrees C "
1545 "exceeds operating range."
1546 " Immediate action needed.\n",
1547 netxen_nic_driver_name
, temp_val
);
1550 if (adapter
->temp
== NX_TEMP_WARN
) {
1552 "%s: Device temperature is now %d degrees C"
1553 " in normal range.\n", netxen_nic_driver_name
,
1557 adapter
->temp
= temp_state
;
1561 void netxen_advert_link_change(struct netxen_adapter
*adapter
, int linkup
)
1563 struct net_device
*netdev
= adapter
->netdev
;
1565 if (adapter
->ahw
.linkup
&& !linkup
) {
1566 printk(KERN_INFO
"%s: %s NIC Link is down\n",
1567 netxen_nic_driver_name
, netdev
->name
);
1568 adapter
->ahw
.linkup
= 0;
1569 if (netif_running(netdev
)) {
1570 netif_carrier_off(netdev
);
1571 netif_stop_queue(netdev
);
1574 if (!adapter
->has_link_events
)
1575 netxen_nic_set_link_parameters(adapter
);
1577 } else if (!adapter
->ahw
.linkup
&& linkup
) {
1578 printk(KERN_INFO
"%s: %s NIC Link is up\n",
1579 netxen_nic_driver_name
, netdev
->name
);
1580 adapter
->ahw
.linkup
= 1;
1581 if (netif_running(netdev
)) {
1582 netif_carrier_on(netdev
);
1583 netif_wake_queue(netdev
);
1586 if (!adapter
->has_link_events
)
1587 netxen_nic_set_link_parameters(adapter
);
1591 static void netxen_nic_handle_phy_intr(struct netxen_adapter
*adapter
)
1593 u32 val
, port
, linkup
;
1595 port
= adapter
->physical_port
;
1597 if (NX_IS_REVISION_P3(adapter
->ahw
.revision_id
)) {
1598 val
= NXRD32(adapter
, CRB_XG_STATE_P3
);
1599 val
= XG_LINK_STATE_P3(adapter
->ahw
.pci_func
, val
);
1600 linkup
= (val
== XG_LINK_UP_P3
);
1602 val
= NXRD32(adapter
, CRB_XG_STATE
);
1603 if (adapter
->ahw
.port_type
== NETXEN_NIC_GBE
)
1604 linkup
= (val
>> port
) & 1;
1606 val
= (val
>> port
*8) & 0xff;
1607 linkup
= (val
== XG_LINK_UP
);
1611 netxen_advert_link_change(adapter
, linkup
);
1614 static void netxen_watchdog(unsigned long v
)
1616 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)v
;
1618 SCHEDULE_WORK(&adapter
->watchdog_task
);
1621 void netxen_watchdog_task(struct work_struct
*work
)
1623 struct netxen_adapter
*adapter
=
1624 container_of(work
, struct netxen_adapter
, watchdog_task
);
1626 if ((adapter
->portnum
== 0) && netxen_nic_check_temp(adapter
))
1629 if (!adapter
->has_link_events
)
1630 netxen_nic_handle_phy_intr(adapter
);
1632 if (netif_running(adapter
->netdev
))
1633 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1636 static void netxen_tx_timeout(struct net_device
*netdev
)
1638 struct netxen_adapter
*adapter
= (struct netxen_adapter
*)
1639 netdev_priv(netdev
);
1640 SCHEDULE_WORK(&adapter
->tx_timeout_task
);
1643 static void netxen_tx_timeout_task(struct work_struct
*work
)
1645 struct netxen_adapter
*adapter
=
1646 container_of(work
, struct netxen_adapter
, tx_timeout_task
);
1648 printk(KERN_ERR
"%s %s: transmit timeout, resetting.\n",
1649 netxen_nic_driver_name
, adapter
->netdev
->name
);
1651 netxen_napi_disable(adapter
);
1653 adapter
->netdev
->trans_start
= jiffies
;
1655 netxen_napi_enable(adapter
);
1656 netif_wake_queue(adapter
->netdev
);
1659 struct net_device_stats
*netxen_nic_get_stats(struct net_device
*netdev
)
1661 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1662 struct net_device_stats
*stats
= &adapter
->net_stats
;
1664 memset(stats
, 0, sizeof(*stats
));
1666 stats
->rx_packets
= adapter
->stats
.no_rcv
;
1667 stats
->tx_packets
= adapter
->stats
.xmitfinished
;
1668 stats
->rx_bytes
= adapter
->stats
.rxbytes
;
1669 stats
->tx_bytes
= adapter
->stats
.txbytes
;
1670 stats
->rx_dropped
= adapter
->stats
.rxdropped
;
1671 stats
->tx_dropped
= adapter
->stats
.txdropped
;
1676 static irqreturn_t
netxen_intr(int irq
, void *data
)
1678 struct nx_host_sds_ring
*sds_ring
= data
;
1679 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
1682 status
= adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1684 if (!(status
& adapter
->legacy_intr
.int_vec_bit
))
1687 if (adapter
->ahw
.revision_id
>= NX_P3_B1
) {
1688 /* check interrupt state machine, to be sure */
1689 status
= adapter
->pci_read_immediate(adapter
,
1691 if (!ISR_LEGACY_INT_TRIGGERED(status
))
1695 unsigned long our_int
= 0;
1697 our_int
= NXRD32(adapter
, CRB_INT_VECTOR
);
1699 /* not our interrupt */
1700 if (!test_and_clear_bit((7 + adapter
->portnum
), &our_int
))
1703 /* claim interrupt */
1704 NXWR32(adapter
, CRB_INT_VECTOR
, (our_int
& 0xffffffff));
1707 /* clear interrupt */
1708 if (adapter
->fw_major
< 4)
1709 netxen_nic_disable_int(sds_ring
);
1711 adapter
->pci_write_immediate(adapter
,
1712 adapter
->legacy_intr
.tgt_status_reg
,
1714 /* read twice to ensure write is flushed */
1715 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1716 adapter
->pci_read_immediate(adapter
, ISR_INT_VECTOR
);
1718 napi_schedule(&sds_ring
->napi
);
1723 static irqreturn_t
netxen_msi_intr(int irq
, void *data
)
1725 struct nx_host_sds_ring
*sds_ring
= data
;
1726 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
1728 /* clear interrupt */
1729 adapter
->pci_write_immediate(adapter
,
1730 adapter
->msi_tgt_status
, 0xffffffff);
1732 napi_schedule(&sds_ring
->napi
);
1736 static irqreturn_t
netxen_msix_intr(int irq
, void *data
)
1738 struct nx_host_sds_ring
*sds_ring
= data
;
1740 napi_schedule(&sds_ring
->napi
);
1744 static int netxen_nic_poll(struct napi_struct
*napi
, int budget
)
1746 struct nx_host_sds_ring
*sds_ring
=
1747 container_of(napi
, struct nx_host_sds_ring
, napi
);
1749 struct netxen_adapter
*adapter
= sds_ring
->adapter
;
1754 tx_complete
= netxen_process_cmd_ring(adapter
);
1756 work_done
= netxen_process_rcv_ring(sds_ring
, budget
);
1758 if ((work_done
< budget
) && tx_complete
) {
1759 napi_complete(&sds_ring
->napi
);
1760 netxen_nic_enable_int(sds_ring
);
1766 #ifdef CONFIG_NET_POLL_CONTROLLER
1767 static void netxen_nic_poll_controller(struct net_device
*netdev
)
1769 struct netxen_adapter
*adapter
= netdev_priv(netdev
);
1770 disable_irq(adapter
->irq
);
1771 netxen_intr(adapter
->irq
, adapter
);
1772 enable_irq(adapter
->irq
);
1776 static struct pci_driver netxen_driver
= {
1777 .name
= netxen_nic_driver_name
,
1778 .id_table
= netxen_pci_tbl
,
1779 .probe
= netxen_nic_probe
,
1780 .remove
= __devexit_p(netxen_nic_remove
),
1782 .suspend
= netxen_nic_suspend
,
1783 .resume
= netxen_nic_resume
1787 /* Driver Registration on NetXen card */
1789 static int __init
netxen_init_module(void)
1791 printk(KERN_INFO
"%s\n", netxen_nic_driver_string
);
1793 if ((netxen_workq
= create_singlethread_workqueue("netxen")) == NULL
)
1796 return pci_register_driver(&netxen_driver
);
1799 module_init(netxen_init_module
);
1801 static void __exit
netxen_exit_module(void)
1803 pci_unregister_driver(&netxen_driver
);
1804 destroy_workqueue(netxen_workq
);
1807 module_exit(netxen_exit_module
);