2 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
3 * Copyright(c) 2006 Chris Snook <csnook@redhat.com>
4 * Copyright(c) 2006 Jay Cliburn <jcliburn@gmail.com>
6 * Derived from Intel e1000 driver
7 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 * You should have received a copy of the GNU General Public License along with
20 * this program; if not, write to the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 * The full GNU General Public License is included in this distribution in the
24 * file called COPYING.
26 * Contact Information:
27 * Xiong Huang <xiong_huang@attansic.com>
28 * Attansic Technology Corp. 3F 147, Xianzheng 9th Road, Zhubei,
29 * Xinzhu 302, TAIWAN, REPUBLIC OF CHINA
31 * Chris Snook <csnook@redhat.com>
32 * Jay Cliburn <jcliburn@gmail.com>
34 * This version is adapted from the Attansic reference driver for
35 * inclusion in the Linux kernel. It is currently under heavy development.
36 * A very incomplete list of things that need to be dealt with:
39 * Fix TSO; tx performance is horrible with TSO enabled.
41 * Add more ethtool functions.
42 * Fix abstruse irq enable/disable condition described here:
43 * http://marc.theaimsgroup.com/?l=linux-netdev&m=116398508500553&w=2
49 * interrupt coalescing
53 #include <linux/types.h>
54 #include <linux/netdevice.h>
55 #include <linux/pci.h>
56 #include <linux/spinlock.h>
57 #include <linux/slab.h>
58 #include <linux/string.h>
59 #include <linux/skbuff.h>
60 #include <linux/etherdevice.h>
61 #include <linux/if_vlan.h>
62 #include <linux/if_ether.h>
63 #include <linux/irqreturn.h>
64 #include <linux/workqueue.h>
65 #include <linux/timer.h>
66 #include <linux/jiffies.h>
67 #include <linux/hardirq.h>
68 #include <linux/interrupt.h>
69 #include <linux/irqflags.h>
70 #include <linux/dma-mapping.h>
71 #include <linux/net.h>
75 #include <linux/tcp.h>
76 #include <linux/compiler.h>
77 #include <linux/delay.h>
78 #include <linux/mii.h>
79 #include <net/checksum.h>
81 #include <asm/atomic.h>
82 #include <asm/byteorder.h>
86 #define DRIVER_VERSION "2.0.7"
88 char atl1_driver_name
[] = "atl1";
89 static const char atl1_driver_string
[] = "Attansic L1 Ethernet Network Driver";
90 static const char atl1_copyright
[] = "Copyright(c) 2005-2006 Attansic Corporation.";
91 char atl1_driver_version
[] = DRIVER_VERSION
;
94 ("Attansic Corporation <xiong_huang@attansic.com>, Chris Snook <csnook@redhat.com>, Jay Cliburn <jcliburn@gmail.com>");
95 MODULE_DESCRIPTION("Attansic 1000M Ethernet Network Driver");
96 MODULE_LICENSE("GPL");
97 MODULE_VERSION(DRIVER_VERSION
);
100 * atl1_pci_tbl - PCI Device ID Table
102 static const struct pci_device_id atl1_pci_tbl
[] = {
103 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATTANSIC_L1
)},
104 /* required last entry */
108 MODULE_DEVICE_TABLE(pci
, atl1_pci_tbl
);
111 * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
112 * @adapter: board private structure to initialize
114 * atl1_sw_init initializes the Adapter private data structure.
115 * Fields are initialized based on PCI device information and
116 * OS network device settings (MTU size).
118 static int __devinit
atl1_sw_init(struct atl1_adapter
*adapter
)
120 struct atl1_hw
*hw
= &adapter
->hw
;
121 struct net_device
*netdev
= adapter
->netdev
;
123 hw
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
;
124 hw
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
127 adapter
->rx_buffer_len
= (hw
->max_frame_size
+ 7) & ~7;
128 adapter
->ict
= 50000; /* 100ms */
129 adapter
->link_speed
= SPEED_0
; /* hardware init */
130 adapter
->link_duplex
= FULL_DUPLEX
;
132 hw
->phy_configured
= false;
133 hw
->preamble_len
= 7;
143 hw
->rfd_fetch_gap
= 1;
144 hw
->rx_jumbo_th
= adapter
->rx_buffer_len
/ 8;
145 hw
->rx_jumbo_lkah
= 1;
146 hw
->rrd_ret_timer
= 16;
148 hw
->tpd_fetch_th
= 16;
149 hw
->txf_burst
= 0x100;
150 hw
->tx_jumbo_task_th
= (hw
->max_frame_size
+ 7) >> 3;
151 hw
->tpd_fetch_gap
= 1;
152 hw
->rcb_value
= atl1_rcb_64
;
153 hw
->dma_ord
= atl1_dma_ord_enh
;
154 hw
->dmar_block
= atl1_dma_req_256
;
155 hw
->dmaw_block
= atl1_dma_req_256
;
158 hw
->cmb_rx_timer
= 1; /* about 2us */
159 hw
->cmb_tx_timer
= 1; /* about 2us */
160 hw
->smb_timer
= 100000; /* about 200ms */
162 spin_lock_init(&adapter
->lock
);
163 spin_lock_init(&adapter
->mb_lock
);
168 static int mdio_read(struct net_device
*netdev
, int phy_id
, int reg_num
)
170 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
173 atl1_read_phy_reg(&adapter
->hw
, reg_num
& 0x1f, &result
);
178 static void mdio_write(struct net_device
*netdev
, int phy_id
, int reg_num
,
181 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
183 atl1_write_phy_reg(&adapter
->hw
, reg_num
, val
);
192 static int atl1_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
194 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
198 if (!netif_running(netdev
))
201 spin_lock_irqsave(&adapter
->lock
, flags
);
202 retval
= generic_mii_ioctl(&adapter
->mii
, if_mii(ifr
), cmd
, NULL
);
203 spin_unlock_irqrestore(&adapter
->lock
, flags
);
214 static int atl1_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
220 return atl1_mii_ioctl(netdev
, ifr
, cmd
);
227 * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
228 * @adapter: board private structure
230 * Return 0 on success, negative on failure
232 s32
atl1_setup_ring_resources(struct atl1_adapter
*adapter
)
234 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
235 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
236 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
237 struct atl1_ring_header
*ring_header
= &adapter
->ring_header
;
238 struct pci_dev
*pdev
= adapter
->pdev
;
242 size
= sizeof(struct atl1_buffer
) * (tpd_ring
->count
+ rfd_ring
->count
);
243 tpd_ring
->buffer_info
= kzalloc(size
, GFP_KERNEL
);
244 if (unlikely(!tpd_ring
->buffer_info
)) {
245 dev_err(&pdev
->dev
, "kzalloc failed , size = D%d\n", size
);
248 rfd_ring
->buffer_info
=
249 (struct atl1_buffer
*)(tpd_ring
->buffer_info
+ tpd_ring
->count
);
251 /* real ring DMA buffer
252 * each ring/block may need up to 8 bytes for alignment, hence the
253 * additional 40 bytes tacked onto the end.
255 ring_header
->size
= size
=
256 sizeof(struct tx_packet_desc
) * tpd_ring
->count
257 + sizeof(struct rx_free_desc
) * rfd_ring
->count
258 + sizeof(struct rx_return_desc
) * rrd_ring
->count
259 + sizeof(struct coals_msg_block
)
260 + sizeof(struct stats_msg_block
)
263 ring_header
->desc
= pci_alloc_consistent(pdev
, ring_header
->size
,
265 if (unlikely(!ring_header
->desc
)) {
266 dev_err(&pdev
->dev
, "pci_alloc_consistent failed\n");
270 memset(ring_header
->desc
, 0, ring_header
->size
);
273 tpd_ring
->dma
= ring_header
->dma
;
274 offset
= (tpd_ring
->dma
& 0x7) ? (8 - (ring_header
->dma
& 0x7)) : 0;
275 tpd_ring
->dma
+= offset
;
276 tpd_ring
->desc
= (u8
*) ring_header
->desc
+ offset
;
277 tpd_ring
->size
= sizeof(struct tx_packet_desc
) * tpd_ring
->count
;
280 rfd_ring
->dma
= tpd_ring
->dma
+ tpd_ring
->size
;
281 offset
= (rfd_ring
->dma
& 0x7) ? (8 - (rfd_ring
->dma
& 0x7)) : 0;
282 rfd_ring
->dma
+= offset
;
283 rfd_ring
->desc
= (u8
*) tpd_ring
->desc
+ (tpd_ring
->size
+ offset
);
284 rfd_ring
->size
= sizeof(struct rx_free_desc
) * rfd_ring
->count
;
288 rrd_ring
->dma
= rfd_ring
->dma
+ rfd_ring
->size
;
289 offset
= (rrd_ring
->dma
& 0x7) ? (8 - (rrd_ring
->dma
& 0x7)) : 0;
290 rrd_ring
->dma
+= offset
;
291 rrd_ring
->desc
= (u8
*) rfd_ring
->desc
+ (rfd_ring
->size
+ offset
);
292 rrd_ring
->size
= sizeof(struct rx_return_desc
) * rrd_ring
->count
;
296 adapter
->cmb
.dma
= rrd_ring
->dma
+ rrd_ring
->size
;
297 offset
= (adapter
->cmb
.dma
& 0x7) ? (8 - (adapter
->cmb
.dma
& 0x7)) : 0;
298 adapter
->cmb
.dma
+= offset
;
299 adapter
->cmb
.cmb
= (struct coals_msg_block
*)
300 ((u8
*) rrd_ring
->desc
+ (rrd_ring
->size
+ offset
));
303 adapter
->smb
.dma
= adapter
->cmb
.dma
+ sizeof(struct coals_msg_block
);
304 offset
= (adapter
->smb
.dma
& 0x7) ? (8 - (adapter
->smb
.dma
& 0x7)) : 0;
305 adapter
->smb
.dma
+= offset
;
306 adapter
->smb
.smb
= (struct stats_msg_block
*)
307 ((u8
*) adapter
->cmb
.cmb
+
308 (sizeof(struct coals_msg_block
) + offset
));
313 kfree(tpd_ring
->buffer_info
);
317 static void atl1_init_ring_ptrs(struct atl1_adapter
*adapter
)
319 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
320 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
321 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
323 atomic_set(&tpd_ring
->next_to_use
, 0);
324 atomic_set(&tpd_ring
->next_to_clean
, 0);
326 rfd_ring
->next_to_clean
= 0;
327 atomic_set(&rfd_ring
->next_to_use
, 0);
329 rrd_ring
->next_to_use
= 0;
330 atomic_set(&rrd_ring
->next_to_clean
, 0);
334 * atl1_clean_rx_ring - Free RFD Buffers
335 * @adapter: board private structure
337 static void atl1_clean_rx_ring(struct atl1_adapter
*adapter
)
339 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
340 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
341 struct atl1_buffer
*buffer_info
;
342 struct pci_dev
*pdev
= adapter
->pdev
;
346 /* Free all the Rx ring sk_buffs */
347 for (i
= 0; i
< rfd_ring
->count
; i
++) {
348 buffer_info
= &rfd_ring
->buffer_info
[i
];
349 if (buffer_info
->dma
) {
350 pci_unmap_page(pdev
, buffer_info
->dma
,
351 buffer_info
->length
, PCI_DMA_FROMDEVICE
);
352 buffer_info
->dma
= 0;
354 if (buffer_info
->skb
) {
355 dev_kfree_skb(buffer_info
->skb
);
356 buffer_info
->skb
= NULL
;
360 size
= sizeof(struct atl1_buffer
) * rfd_ring
->count
;
361 memset(rfd_ring
->buffer_info
, 0, size
);
363 /* Zero out the descriptor ring */
364 memset(rfd_ring
->desc
, 0, rfd_ring
->size
);
366 rfd_ring
->next_to_clean
= 0;
367 atomic_set(&rfd_ring
->next_to_use
, 0);
369 rrd_ring
->next_to_use
= 0;
370 atomic_set(&rrd_ring
->next_to_clean
, 0);
374 * atl1_clean_tx_ring - Free Tx Buffers
375 * @adapter: board private structure
377 static void atl1_clean_tx_ring(struct atl1_adapter
*adapter
)
379 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
380 struct atl1_buffer
*buffer_info
;
381 struct pci_dev
*pdev
= adapter
->pdev
;
385 /* Free all the Tx ring sk_buffs */
386 for (i
= 0; i
< tpd_ring
->count
; i
++) {
387 buffer_info
= &tpd_ring
->buffer_info
[i
];
388 if (buffer_info
->dma
) {
389 pci_unmap_page(pdev
, buffer_info
->dma
,
390 buffer_info
->length
, PCI_DMA_TODEVICE
);
391 buffer_info
->dma
= 0;
395 for (i
= 0; i
< tpd_ring
->count
; i
++) {
396 buffer_info
= &tpd_ring
->buffer_info
[i
];
397 if (buffer_info
->skb
) {
398 dev_kfree_skb_any(buffer_info
->skb
);
399 buffer_info
->skb
= NULL
;
403 size
= sizeof(struct atl1_buffer
) * tpd_ring
->count
;
404 memset(tpd_ring
->buffer_info
, 0, size
);
406 /* Zero out the descriptor ring */
407 memset(tpd_ring
->desc
, 0, tpd_ring
->size
);
409 atomic_set(&tpd_ring
->next_to_use
, 0);
410 atomic_set(&tpd_ring
->next_to_clean
, 0);
414 * atl1_free_ring_resources - Free Tx / RX descriptor Resources
415 * @adapter: board private structure
417 * Free all transmit software resources
419 void atl1_free_ring_resources(struct atl1_adapter
*adapter
)
421 struct pci_dev
*pdev
= adapter
->pdev
;
422 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
423 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
424 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
425 struct atl1_ring_header
*ring_header
= &adapter
->ring_header
;
427 atl1_clean_tx_ring(adapter
);
428 atl1_clean_rx_ring(adapter
);
430 kfree(tpd_ring
->buffer_info
);
431 pci_free_consistent(pdev
, ring_header
->size
, ring_header
->desc
,
434 tpd_ring
->buffer_info
= NULL
;
435 tpd_ring
->desc
= NULL
;
438 rfd_ring
->buffer_info
= NULL
;
439 rfd_ring
->desc
= NULL
;
442 rrd_ring
->desc
= NULL
;
446 static void atl1_setup_mac_ctrl(struct atl1_adapter
*adapter
)
449 struct atl1_hw
*hw
= &adapter
->hw
;
450 struct net_device
*netdev
= adapter
->netdev
;
451 /* Config MAC CTRL Register */
452 value
= MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
;
454 if (FULL_DUPLEX
== adapter
->link_duplex
)
455 value
|= MAC_CTRL_DUPLX
;
457 value
|= ((u32
) ((SPEED_1000
== adapter
->link_speed
) ?
458 MAC_CTRL_SPEED_1000
: MAC_CTRL_SPEED_10_100
) <<
459 MAC_CTRL_SPEED_SHIFT
);
461 value
|= (MAC_CTRL_TX_FLOW
| MAC_CTRL_RX_FLOW
);
463 value
|= (MAC_CTRL_ADD_CRC
| MAC_CTRL_PAD
);
464 /* preamble length */
465 value
|= (((u32
) adapter
->hw
.preamble_len
466 & MAC_CTRL_PRMLEN_MASK
) << MAC_CTRL_PRMLEN_SHIFT
);
469 value
|= MAC_CTRL_RMV_VLAN
;
471 if (adapter->rx_csum)
472 value |= MAC_CTRL_RX_CHKSUM_EN;
475 value
|= MAC_CTRL_BC_EN
;
476 if (netdev
->flags
& IFF_PROMISC
)
477 value
|= MAC_CTRL_PROMIS_EN
;
478 else if (netdev
->flags
& IFF_ALLMULTI
)
479 value
|= MAC_CTRL_MC_ALL_EN
;
480 /* value |= MAC_CTRL_LOOPBACK; */
481 iowrite32(value
, hw
->hw_addr
+ REG_MAC_CTRL
);
485 * atl1_set_mac - Change the Ethernet Address of the NIC
486 * @netdev: network interface device structure
487 * @p: pointer to an address structure
489 * Returns 0 on success, negative on failure
491 static int atl1_set_mac(struct net_device
*netdev
, void *p
)
493 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
494 struct sockaddr
*addr
= p
;
496 if (netif_running(netdev
))
499 if (!is_valid_ether_addr(addr
->sa_data
))
500 return -EADDRNOTAVAIL
;
502 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
503 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
505 atl1_set_mac_addr(&adapter
->hw
);
509 static u32
atl1_check_link(struct atl1_adapter
*adapter
)
511 struct atl1_hw
*hw
= &adapter
->hw
;
512 struct net_device
*netdev
= adapter
->netdev
;
514 u16 speed
, duplex
, phy_data
;
517 /* MII_BMSR must read twice */
518 atl1_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
519 atl1_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
520 if (!(phy_data
& BMSR_LSTATUS
)) { /* link down */
521 if (netif_carrier_ok(netdev
)) { /* old link state: Up */
522 dev_info(&adapter
->pdev
->dev
, "link is down\n");
523 adapter
->link_speed
= SPEED_0
;
524 netif_carrier_off(netdev
);
525 netif_stop_queue(netdev
);
531 ret_val
= atl1_get_speed_and_duplex(hw
, &speed
, &duplex
);
535 switch (hw
->media_type
) {
536 case MEDIA_TYPE_1000M_FULL
:
537 if (speed
!= SPEED_1000
|| duplex
!= FULL_DUPLEX
)
540 case MEDIA_TYPE_100M_FULL
:
541 if (speed
!= SPEED_100
|| duplex
!= FULL_DUPLEX
)
544 case MEDIA_TYPE_100M_HALF
:
545 if (speed
!= SPEED_100
|| duplex
!= HALF_DUPLEX
)
548 case MEDIA_TYPE_10M_FULL
:
549 if (speed
!= SPEED_10
|| duplex
!= FULL_DUPLEX
)
552 case MEDIA_TYPE_10M_HALF
:
553 if (speed
!= SPEED_10
|| duplex
!= HALF_DUPLEX
)
558 /* link result is our setting */
560 if (adapter
->link_speed
!= speed
561 || adapter
->link_duplex
!= duplex
) {
562 adapter
->link_speed
= speed
;
563 adapter
->link_duplex
= duplex
;
564 atl1_setup_mac_ctrl(adapter
);
565 dev_info(&adapter
->pdev
->dev
,
566 "%s link is up %d Mbps %s\n",
567 netdev
->name
, adapter
->link_speed
,
568 adapter
->link_duplex
== FULL_DUPLEX
?
569 "full duplex" : "half duplex");
571 if (!netif_carrier_ok(netdev
)) { /* Link down -> Up */
572 netif_carrier_on(netdev
);
573 netif_wake_queue(netdev
);
578 /* change orignal link status */
579 if (netif_carrier_ok(netdev
)) {
580 adapter
->link_speed
= SPEED_0
;
581 netif_carrier_off(netdev
);
582 netif_stop_queue(netdev
);
585 if (hw
->media_type
!= MEDIA_TYPE_AUTO_SENSOR
&&
586 hw
->media_type
!= MEDIA_TYPE_1000M_FULL
) {
587 switch (hw
->media_type
) {
588 case MEDIA_TYPE_100M_FULL
:
589 phy_data
= MII_CR_FULL_DUPLEX
| MII_CR_SPEED_100
|
592 case MEDIA_TYPE_100M_HALF
:
593 phy_data
= MII_CR_SPEED_100
| MII_CR_RESET
;
595 case MEDIA_TYPE_10M_FULL
:
597 MII_CR_FULL_DUPLEX
| MII_CR_SPEED_10
| MII_CR_RESET
;
599 default: /* MEDIA_TYPE_10M_HALF: */
600 phy_data
= MII_CR_SPEED_10
| MII_CR_RESET
;
603 atl1_write_phy_reg(hw
, MII_BMCR
, phy_data
);
607 /* auto-neg, insert timer to re-config phy */
608 if (!adapter
->phy_timer_pending
) {
609 adapter
->phy_timer_pending
= true;
610 mod_timer(&adapter
->phy_config_timer
, jiffies
+ 3 * HZ
);
616 static void atl1_check_for_link(struct atl1_adapter
*adapter
)
618 struct net_device
*netdev
= adapter
->netdev
;
621 spin_lock(&adapter
->lock
);
622 adapter
->phy_timer_pending
= false;
623 atl1_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
624 atl1_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
625 spin_unlock(&adapter
->lock
);
627 /* notify upper layer link down ASAP */
628 if (!(phy_data
& BMSR_LSTATUS
)) { /* Link Down */
629 if (netif_carrier_ok(netdev
)) { /* old link state: Up */
630 dev_info(&adapter
->pdev
->dev
, "%s link is down\n",
632 adapter
->link_speed
= SPEED_0
;
633 netif_carrier_off(netdev
);
634 netif_stop_queue(netdev
);
637 schedule_work(&adapter
->link_chg_task
);
641 * atl1_set_multi - Multicast and Promiscuous mode set
642 * @netdev: network interface device structure
644 * The set_multi entry point is called whenever the multicast address
645 * list or the network interface flags are updated. This routine is
646 * responsible for configuring the hardware for proper multicast,
647 * promiscuous mode, and all-multi behavior.
649 static void atl1_set_multi(struct net_device
*netdev
)
651 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
652 struct atl1_hw
*hw
= &adapter
->hw
;
653 struct dev_mc_list
*mc_ptr
;
657 /* Check for Promiscuous and All Multicast modes */
658 rctl
= ioread32(hw
->hw_addr
+ REG_MAC_CTRL
);
659 if (netdev
->flags
& IFF_PROMISC
)
660 rctl
|= MAC_CTRL_PROMIS_EN
;
661 else if (netdev
->flags
& IFF_ALLMULTI
) {
662 rctl
|= MAC_CTRL_MC_ALL_EN
;
663 rctl
&= ~MAC_CTRL_PROMIS_EN
;
665 rctl
&= ~(MAC_CTRL_PROMIS_EN
| MAC_CTRL_MC_ALL_EN
);
667 iowrite32(rctl
, hw
->hw_addr
+ REG_MAC_CTRL
);
669 /* clear the old settings from the multicast hash table */
670 iowrite32(0, hw
->hw_addr
+ REG_RX_HASH_TABLE
);
671 iowrite32(0, (hw
->hw_addr
+ REG_RX_HASH_TABLE
) + (1 << 2));
673 /* compute mc addresses' hash value ,and put it into hash table */
674 for (mc_ptr
= netdev
->mc_list
; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
675 hash_value
= atl1_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
676 atl1_hash_set(hw
, hash_value
);
681 * atl1_change_mtu - Change the Maximum Transfer Unit
682 * @netdev: network interface device structure
683 * @new_mtu: new value for maximum frame size
685 * Returns 0 on success, negative on failure
687 static int atl1_change_mtu(struct net_device
*netdev
, int new_mtu
)
689 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
690 int old_mtu
= netdev
->mtu
;
691 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
;
693 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
694 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
695 dev_warn(&adapter
->pdev
->dev
, "invalid MTU setting\n");
699 adapter
->hw
.max_frame_size
= max_frame
;
700 adapter
->hw
.tx_jumbo_task_th
= (max_frame
+ 7) >> 3;
701 adapter
->rx_buffer_len
= (max_frame
+ 7) & ~7;
702 adapter
->hw
.rx_jumbo_th
= adapter
->rx_buffer_len
/ 8;
704 netdev
->mtu
= new_mtu
;
705 if ((old_mtu
!= new_mtu
) && netif_running(netdev
)) {
713 static void set_flow_ctrl_old(struct atl1_adapter
*adapter
)
717 /* RFD Flow Control */
718 value
= adapter
->rfd_ring
.count
;
724 value
= ((hi
& RXQ_RXF_PAUSE_TH_HI_MASK
) << RXQ_RXF_PAUSE_TH_HI_SHIFT
) |
725 ((lo
& RXQ_RXF_PAUSE_TH_LO_MASK
) << RXQ_RXF_PAUSE_TH_LO_SHIFT
);
726 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_RXQ_RXF_PAUSE_THRESH
);
728 /* RRD Flow Control */
729 value
= adapter
->rrd_ring
.count
;
734 value
= ((hi
& RXQ_RRD_PAUSE_TH_HI_MASK
) << RXQ_RRD_PAUSE_TH_HI_SHIFT
) |
735 ((lo
& RXQ_RRD_PAUSE_TH_LO_MASK
) << RXQ_RRD_PAUSE_TH_LO_SHIFT
);
736 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_RXQ_RRD_PAUSE_THRESH
);
739 static void set_flow_ctrl_new(struct atl1_hw
*hw
)
743 /* RXF Flow Control */
744 value
= ioread32(hw
->hw_addr
+ REG_SRAM_RXF_LEN
);
751 value
= ((hi
& RXQ_RXF_PAUSE_TH_HI_MASK
) << RXQ_RXF_PAUSE_TH_HI_SHIFT
) |
752 ((lo
& RXQ_RXF_PAUSE_TH_LO_MASK
) << RXQ_RXF_PAUSE_TH_LO_SHIFT
);
753 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_RXF_PAUSE_THRESH
);
755 /* RRD Flow Control */
756 value
= ioread32(hw
->hw_addr
+ REG_SRAM_RRD_LEN
);
763 value
= ((hi
& RXQ_RRD_PAUSE_TH_HI_MASK
) << RXQ_RRD_PAUSE_TH_HI_SHIFT
) |
764 ((lo
& RXQ_RRD_PAUSE_TH_LO_MASK
) << RXQ_RRD_PAUSE_TH_LO_SHIFT
);
765 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_RRD_PAUSE_THRESH
);
769 * atl1_configure - Configure Transmit&Receive Unit after Reset
770 * @adapter: board private structure
772 * Configure the Tx /Rx unit of the MAC after a reset.
774 static u32
atl1_configure(struct atl1_adapter
*adapter
)
776 struct atl1_hw
*hw
= &adapter
->hw
;
779 /* clear interrupt status */
780 iowrite32(0xffffffff, adapter
->hw
.hw_addr
+ REG_ISR
);
782 /* set MAC Address */
783 value
= (((u32
) hw
->mac_addr
[2]) << 24) |
784 (((u32
) hw
->mac_addr
[3]) << 16) |
785 (((u32
) hw
->mac_addr
[4]) << 8) |
786 (((u32
) hw
->mac_addr
[5]));
787 iowrite32(value
, hw
->hw_addr
+ REG_MAC_STA_ADDR
);
788 value
= (((u32
) hw
->mac_addr
[0]) << 8) | (((u32
) hw
->mac_addr
[1]));
789 iowrite32(value
, hw
->hw_addr
+ (REG_MAC_STA_ADDR
+ 4));
793 /* HI base address */
794 iowrite32((u32
) ((adapter
->tpd_ring
.dma
& 0xffffffff00000000ULL
) >> 32),
795 hw
->hw_addr
+ REG_DESC_BASE_ADDR_HI
);
796 /* LO base address */
797 iowrite32((u32
) (adapter
->rfd_ring
.dma
& 0x00000000ffffffffULL
),
798 hw
->hw_addr
+ REG_DESC_RFD_ADDR_LO
);
799 iowrite32((u32
) (adapter
->rrd_ring
.dma
& 0x00000000ffffffffULL
),
800 hw
->hw_addr
+ REG_DESC_RRD_ADDR_LO
);
801 iowrite32((u32
) (adapter
->tpd_ring
.dma
& 0x00000000ffffffffULL
),
802 hw
->hw_addr
+ REG_DESC_TPD_ADDR_LO
);
803 iowrite32((u32
) (adapter
->cmb
.dma
& 0x00000000ffffffffULL
),
804 hw
->hw_addr
+ REG_DESC_CMB_ADDR_LO
);
805 iowrite32((u32
) (adapter
->smb
.dma
& 0x00000000ffffffffULL
),
806 hw
->hw_addr
+ REG_DESC_SMB_ADDR_LO
);
809 value
= adapter
->rrd_ring
.count
;
811 value
+= adapter
->rfd_ring
.count
;
812 iowrite32(value
, hw
->hw_addr
+ REG_DESC_RFD_RRD_RING_SIZE
);
813 iowrite32(adapter
->tpd_ring
.count
, hw
->hw_addr
+
814 REG_DESC_TPD_RING_SIZE
);
817 iowrite32(1, hw
->hw_addr
+ REG_LOAD_PTR
);
820 value
= ((atomic_read(&adapter
->tpd_ring
.next_to_use
)
821 & MB_TPD_PROD_INDX_MASK
) << MB_TPD_PROD_INDX_SHIFT
) |
822 ((atomic_read(&adapter
->rrd_ring
.next_to_clean
)
823 & MB_RRD_CONS_INDX_MASK
) << MB_RRD_CONS_INDX_SHIFT
) |
824 ((atomic_read(&adapter
->rfd_ring
.next_to_use
)
825 & MB_RFD_PROD_INDX_MASK
) << MB_RFD_PROD_INDX_SHIFT
);
826 iowrite32(value
, hw
->hw_addr
+ REG_MAILBOX
);
829 value
= (((u32
) hw
->ipgt
& MAC_IPG_IFG_IPGT_MASK
)
830 << MAC_IPG_IFG_IPGT_SHIFT
) |
831 (((u32
) hw
->min_ifg
& MAC_IPG_IFG_MIFG_MASK
)
832 << MAC_IPG_IFG_MIFG_SHIFT
) |
833 (((u32
) hw
->ipgr1
& MAC_IPG_IFG_IPGR1_MASK
)
834 << MAC_IPG_IFG_IPGR1_SHIFT
) |
835 (((u32
) hw
->ipgr2
& MAC_IPG_IFG_IPGR2_MASK
)
836 << MAC_IPG_IFG_IPGR2_SHIFT
);
837 iowrite32(value
, hw
->hw_addr
+ REG_MAC_IPG_IFG
);
839 /* config Half-Duplex Control */
840 value
= ((u32
) hw
->lcol
& MAC_HALF_DUPLX_CTRL_LCOL_MASK
) |
841 (((u32
) hw
->max_retry
& MAC_HALF_DUPLX_CTRL_RETRY_MASK
)
842 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT
) |
843 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN
|
844 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT
) |
845 (((u32
) hw
->jam_ipg
& MAC_HALF_DUPLX_CTRL_JAMIPG_MASK
)
846 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT
);
847 iowrite32(value
, hw
->hw_addr
+ REG_MAC_HALF_DUPLX_CTRL
);
849 /* set Interrupt Moderator Timer */
850 iowrite16(adapter
->imt
, hw
->hw_addr
+ REG_IRQ_MODU_TIMER_INIT
);
851 iowrite32(MASTER_CTRL_ITIMER_EN
, hw
->hw_addr
+ REG_MASTER_CTRL
);
853 /* set Interrupt Clear Timer */
854 iowrite16(adapter
->ict
, hw
->hw_addr
+ REG_CMBDISDMA_TIMER
);
856 /* set max frame size hw will accept */
857 iowrite32(hw
->max_frame_size
, hw
->hw_addr
+ REG_MTU
);
859 /* jumbo size & rrd retirement timer */
860 value
= (((u32
) hw
->rx_jumbo_th
& RXQ_JMBOSZ_TH_MASK
)
861 << RXQ_JMBOSZ_TH_SHIFT
) |
862 (((u32
) hw
->rx_jumbo_lkah
& RXQ_JMBO_LKAH_MASK
)
863 << RXQ_JMBO_LKAH_SHIFT
) |
864 (((u32
) hw
->rrd_ret_timer
& RXQ_RRD_TIMER_MASK
)
865 << RXQ_RRD_TIMER_SHIFT
);
866 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_JMBOSZ_RRDTIM
);
869 switch (hw
->dev_rev
) {
874 set_flow_ctrl_old(adapter
);
877 set_flow_ctrl_new(hw
);
882 value
= (((u32
) hw
->tpd_burst
& TXQ_CTRL_TPD_BURST_NUM_MASK
)
883 << TXQ_CTRL_TPD_BURST_NUM_SHIFT
) |
884 (((u32
) hw
->txf_burst
& TXQ_CTRL_TXF_BURST_NUM_MASK
)
885 << TXQ_CTRL_TXF_BURST_NUM_SHIFT
) |
886 (((u32
) hw
->tpd_fetch_th
& TXQ_CTRL_TPD_FETCH_TH_MASK
)
887 << TXQ_CTRL_TPD_FETCH_TH_SHIFT
) | TXQ_CTRL_ENH_MODE
|
889 iowrite32(value
, hw
->hw_addr
+ REG_TXQ_CTRL
);
891 /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
892 value
= (((u32
) hw
->tx_jumbo_task_th
& TX_JUMBO_TASK_TH_MASK
)
893 << TX_JUMBO_TASK_TH_SHIFT
) |
894 (((u32
) hw
->tpd_fetch_gap
& TX_TPD_MIN_IPG_MASK
)
895 << TX_TPD_MIN_IPG_SHIFT
);
896 iowrite32(value
, hw
->hw_addr
+ REG_TX_JUMBO_TASK_TH_TPD_IPG
);
899 value
= (((u32
) hw
->rfd_burst
& RXQ_CTRL_RFD_BURST_NUM_MASK
)
900 << RXQ_CTRL_RFD_BURST_NUM_SHIFT
) |
901 (((u32
) hw
->rrd_burst
& RXQ_CTRL_RRD_BURST_THRESH_MASK
)
902 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT
) |
903 (((u32
) hw
->rfd_fetch_gap
& RXQ_CTRL_RFD_PREF_MIN_IPG_MASK
)
904 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT
) | RXQ_CTRL_CUT_THRU_EN
|
906 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_CTRL
);
908 /* config DMA Engine */
909 value
= ((((u32
) hw
->dmar_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
910 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
) |
911 ((((u32
) hw
->dmaw_block
) & DMA_CTRL_DMAW_BURST_LEN_MASK
)
912 << DMA_CTRL_DMAW_BURST_LEN_SHIFT
) | DMA_CTRL_DMAR_EN
|
914 value
|= (u32
) hw
->dma_ord
;
915 if (atl1_rcb_128
== hw
->rcb_value
)
916 value
|= DMA_CTRL_RCB_VALUE
;
917 iowrite32(value
, hw
->hw_addr
+ REG_DMA_CTRL
);
919 /* config CMB / SMB */
920 value
= (hw
->cmb_tpd
> adapter
->tpd_ring
.count
) ?
921 hw
->cmb_tpd
: adapter
->tpd_ring
.count
;
923 value
|= hw
->cmb_rrd
;
924 iowrite32(value
, hw
->hw_addr
+ REG_CMB_WRITE_TH
);
925 value
= hw
->cmb_rx_timer
| ((u32
) hw
->cmb_tx_timer
<< 16);
926 iowrite32(value
, hw
->hw_addr
+ REG_CMB_WRITE_TIMER
);
927 iowrite32(hw
->smb_timer
, hw
->hw_addr
+ REG_SMB_TIMER
);
929 /* --- enable CMB / SMB */
930 value
= CSMB_CTRL_CMB_EN
| CSMB_CTRL_SMB_EN
;
931 iowrite32(value
, hw
->hw_addr
+ REG_CSMB_CTRL
);
933 value
= ioread32(adapter
->hw
.hw_addr
+ REG_ISR
);
934 if (unlikely((value
& ISR_PHY_LINKDOWN
) != 0))
935 value
= 1; /* config failed */
939 /* clear all interrupt status */
940 iowrite32(0x3fffffff, adapter
->hw
.hw_addr
+ REG_ISR
);
941 iowrite32(0, adapter
->hw
.hw_addr
+ REG_ISR
);
946 * atl1_pcie_patch - Patch for PCIE module
948 static void atl1_pcie_patch(struct atl1_adapter
*adapter
)
952 /* much vendor magic here */
954 iowrite32(value
, adapter
->hw
.hw_addr
+ 0x12FC);
955 /* pcie flow control mode change */
956 value
= ioread32(adapter
->hw
.hw_addr
+ 0x1008);
958 iowrite32(value
, adapter
->hw
.hw_addr
+ 0x1008);
962 * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
963 * on PCI Command register is disable.
964 * The function enable this bit.
965 * Brackett, 2006/03/15
967 static void atl1_via_workaround(struct atl1_adapter
*adapter
)
971 value
= ioread16(adapter
->hw
.hw_addr
+ PCI_COMMAND
);
972 if (value
& PCI_COMMAND_INTX_DISABLE
)
973 value
&= ~PCI_COMMAND_INTX_DISABLE
;
974 iowrite32(value
, adapter
->hw
.hw_addr
+ PCI_COMMAND
);
978 * atl1_irq_enable - Enable default interrupt generation settings
979 * @adapter: board private structure
981 static void atl1_irq_enable(struct atl1_adapter
*adapter
)
983 iowrite32(IMR_NORMAL_MASK
, adapter
->hw
.hw_addr
+ REG_IMR
);
984 ioread32(adapter
->hw
.hw_addr
+ REG_IMR
);
988 * atl1_irq_disable - Mask off interrupt generation on the NIC
989 * @adapter: board private structure
991 static void atl1_irq_disable(struct atl1_adapter
*adapter
)
993 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
994 ioread32(adapter
->hw
.hw_addr
+ REG_IMR
);
995 synchronize_irq(adapter
->pdev
->irq
);
998 static void atl1_clear_phy_int(struct atl1_adapter
*adapter
)
1001 unsigned long flags
;
1003 spin_lock_irqsave(&adapter
->lock
, flags
);
1004 atl1_read_phy_reg(&adapter
->hw
, 19, &phy_data
);
1005 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1008 static void atl1_inc_smb(struct atl1_adapter
*adapter
)
1010 struct stats_msg_block
*smb
= adapter
->smb
.smb
;
1012 /* Fill out the OS statistics structure */
1013 adapter
->soft_stats
.rx_packets
+= smb
->rx_ok
;
1014 adapter
->soft_stats
.tx_packets
+= smb
->tx_ok
;
1015 adapter
->soft_stats
.rx_bytes
+= smb
->rx_byte_cnt
;
1016 adapter
->soft_stats
.tx_bytes
+= smb
->tx_byte_cnt
;
1017 adapter
->soft_stats
.multicast
+= smb
->rx_mcast
;
1018 adapter
->soft_stats
.collisions
+= (smb
->tx_1_col
+ smb
->tx_2_col
* 2 +
1019 smb
->tx_late_col
+ smb
->tx_abort_col
* adapter
->hw
.max_retry
);
1022 adapter
->soft_stats
.rx_errors
+= (smb
->rx_frag
+ smb
->rx_fcs_err
+
1023 smb
->rx_len_err
+ smb
->rx_sz_ov
+ smb
->rx_rxf_ov
+
1024 smb
->rx_rrd_ov
+ smb
->rx_align_err
);
1025 adapter
->soft_stats
.rx_fifo_errors
+= smb
->rx_rxf_ov
;
1026 adapter
->soft_stats
.rx_length_errors
+= smb
->rx_len_err
;
1027 adapter
->soft_stats
.rx_crc_errors
+= smb
->rx_fcs_err
;
1028 adapter
->soft_stats
.rx_frame_errors
+= smb
->rx_align_err
;
1029 adapter
->soft_stats
.rx_missed_errors
+= (smb
->rx_rrd_ov
+
1032 adapter
->soft_stats
.rx_pause
+= smb
->rx_pause
;
1033 adapter
->soft_stats
.rx_rrd_ov
+= smb
->rx_rrd_ov
;
1034 adapter
->soft_stats
.rx_trunc
+= smb
->rx_sz_ov
;
1037 adapter
->soft_stats
.tx_errors
+= (smb
->tx_late_col
+
1038 smb
->tx_abort_col
+ smb
->tx_underrun
+ smb
->tx_trunc
);
1039 adapter
->soft_stats
.tx_fifo_errors
+= smb
->tx_underrun
;
1040 adapter
->soft_stats
.tx_aborted_errors
+= smb
->tx_abort_col
;
1041 adapter
->soft_stats
.tx_window_errors
+= smb
->tx_late_col
;
1043 adapter
->soft_stats
.excecol
+= smb
->tx_abort_col
;
1044 adapter
->soft_stats
.deffer
+= smb
->tx_defer
;
1045 adapter
->soft_stats
.scc
+= smb
->tx_1_col
;
1046 adapter
->soft_stats
.mcc
+= smb
->tx_2_col
;
1047 adapter
->soft_stats
.latecol
+= smb
->tx_late_col
;
1048 adapter
->soft_stats
.tx_underun
+= smb
->tx_underrun
;
1049 adapter
->soft_stats
.tx_trunc
+= smb
->tx_trunc
;
1050 adapter
->soft_stats
.tx_pause
+= smb
->tx_pause
;
1052 adapter
->net_stats
.rx_packets
= adapter
->soft_stats
.rx_packets
;
1053 adapter
->net_stats
.tx_packets
= adapter
->soft_stats
.tx_packets
;
1054 adapter
->net_stats
.rx_bytes
= adapter
->soft_stats
.rx_bytes
;
1055 adapter
->net_stats
.tx_bytes
= adapter
->soft_stats
.tx_bytes
;
1056 adapter
->net_stats
.multicast
= adapter
->soft_stats
.multicast
;
1057 adapter
->net_stats
.collisions
= adapter
->soft_stats
.collisions
;
1058 adapter
->net_stats
.rx_errors
= adapter
->soft_stats
.rx_errors
;
1059 adapter
->net_stats
.rx_over_errors
=
1060 adapter
->soft_stats
.rx_missed_errors
;
1061 adapter
->net_stats
.rx_length_errors
=
1062 adapter
->soft_stats
.rx_length_errors
;
1063 adapter
->net_stats
.rx_crc_errors
= adapter
->soft_stats
.rx_crc_errors
;
1064 adapter
->net_stats
.rx_frame_errors
=
1065 adapter
->soft_stats
.rx_frame_errors
;
1066 adapter
->net_stats
.rx_fifo_errors
= adapter
->soft_stats
.rx_fifo_errors
;
1067 adapter
->net_stats
.rx_missed_errors
=
1068 adapter
->soft_stats
.rx_missed_errors
;
1069 adapter
->net_stats
.tx_errors
= adapter
->soft_stats
.tx_errors
;
1070 adapter
->net_stats
.tx_fifo_errors
= adapter
->soft_stats
.tx_fifo_errors
;
1071 adapter
->net_stats
.tx_aborted_errors
=
1072 adapter
->soft_stats
.tx_aborted_errors
;
1073 adapter
->net_stats
.tx_window_errors
=
1074 adapter
->soft_stats
.tx_window_errors
;
1075 adapter
->net_stats
.tx_carrier_errors
=
1076 adapter
->soft_stats
.tx_carrier_errors
;
1080 * atl1_get_stats - Get System Network Statistics
1081 * @netdev: network interface device structure
1083 * Returns the address of the device statistics structure.
1084 * The statistics are actually updated from the timer callback.
1086 static struct net_device_stats
*atl1_get_stats(struct net_device
*netdev
)
1088 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1089 return &adapter
->net_stats
;
1092 static void atl1_update_mailbox(struct atl1_adapter
*adapter
)
1094 unsigned long flags
;
1095 u32 tpd_next_to_use
;
1096 u32 rfd_next_to_use
;
1097 u32 rrd_next_to_clean
;
1100 spin_lock_irqsave(&adapter
->mb_lock
, flags
);
1102 tpd_next_to_use
= atomic_read(&adapter
->tpd_ring
.next_to_use
);
1103 rfd_next_to_use
= atomic_read(&adapter
->rfd_ring
.next_to_use
);
1104 rrd_next_to_clean
= atomic_read(&adapter
->rrd_ring
.next_to_clean
);
1106 value
= ((rfd_next_to_use
& MB_RFD_PROD_INDX_MASK
) <<
1107 MB_RFD_PROD_INDX_SHIFT
) |
1108 ((rrd_next_to_clean
& MB_RRD_CONS_INDX_MASK
) <<
1109 MB_RRD_CONS_INDX_SHIFT
) |
1110 ((tpd_next_to_use
& MB_TPD_PROD_INDX_MASK
) <<
1111 MB_TPD_PROD_INDX_SHIFT
);
1112 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_MAILBOX
);
1114 spin_unlock_irqrestore(&adapter
->mb_lock
, flags
);
1117 static void atl1_clean_alloc_flag(struct atl1_adapter
*adapter
,
1118 struct rx_return_desc
*rrd
, u16 offset
)
1120 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1122 while (rfd_ring
->next_to_clean
!= (rrd
->buf_indx
+ offset
)) {
1123 rfd_ring
->buffer_info
[rfd_ring
->next_to_clean
].alloced
= 0;
1124 if (++rfd_ring
->next_to_clean
== rfd_ring
->count
) {
1125 rfd_ring
->next_to_clean
= 0;
1130 static void atl1_update_rfd_index(struct atl1_adapter
*adapter
,
1131 struct rx_return_desc
*rrd
)
1135 num_buf
= (rrd
->xsz
.xsum_sz
.pkt_size
+ adapter
->rx_buffer_len
- 1) /
1136 adapter
->rx_buffer_len
;
1137 if (rrd
->num_buf
== num_buf
)
1138 /* clean alloc flag for bad rrd */
1139 atl1_clean_alloc_flag(adapter
, rrd
, num_buf
);
1142 static void atl1_rx_checksum(struct atl1_adapter
*adapter
,
1143 struct rx_return_desc
*rrd
, struct sk_buff
*skb
)
1145 struct pci_dev
*pdev
= adapter
->pdev
;
1147 skb
->ip_summed
= CHECKSUM_NONE
;
1149 if (unlikely(rrd
->pkt_flg
& PACKET_FLAG_ERR
)) {
1150 if (rrd
->err_flg
& (ERR_FLAG_CRC
| ERR_FLAG_TRUNC
|
1151 ERR_FLAG_CODE
| ERR_FLAG_OV
)) {
1152 adapter
->hw_csum_err
++;
1153 dev_printk(KERN_DEBUG
, &pdev
->dev
,
1154 "rx checksum error\n");
1160 if (!(rrd
->pkt_flg
& PACKET_FLAG_IPV4
))
1161 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
1165 if (likely(!(rrd
->err_flg
&
1166 (ERR_FLAG_IP_CHKSUM
| ERR_FLAG_L4_CHKSUM
)))) {
1167 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1168 adapter
->hw_csum_good
++;
1172 /* IPv4, but hardware thinks its checksum is wrong */
1173 dev_printk(KERN_DEBUG
, &pdev
->dev
,
1174 "hw csum wrong, pkt_flag:%x, err_flag:%x\n",
1175 rrd
->pkt_flg
, rrd
->err_flg
);
1176 skb
->ip_summed
= CHECKSUM_COMPLETE
;
1177 skb
->csum
= htons(rrd
->xsz
.xsum_sz
.rx_chksum
);
1178 adapter
->hw_csum_err
++;
1183 * atl1_alloc_rx_buffers - Replace used receive buffers
1184 * @adapter: address of board private structure
1186 static u16
atl1_alloc_rx_buffers(struct atl1_adapter
*adapter
)
1188 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1189 struct pci_dev
*pdev
= adapter
->pdev
;
1191 unsigned long offset
;
1192 struct atl1_buffer
*buffer_info
, *next_info
;
1193 struct sk_buff
*skb
;
1195 u16 rfd_next_to_use
, next_next
;
1196 struct rx_free_desc
*rfd_desc
;
1198 next_next
= rfd_next_to_use
= atomic_read(&rfd_ring
->next_to_use
);
1199 if (++next_next
== rfd_ring
->count
)
1201 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1202 next_info
= &rfd_ring
->buffer_info
[next_next
];
1204 while (!buffer_info
->alloced
&& !next_info
->alloced
) {
1205 if (buffer_info
->skb
) {
1206 buffer_info
->alloced
= 1;
1210 rfd_desc
= ATL1_RFD_DESC(rfd_ring
, rfd_next_to_use
);
1212 skb
= dev_alloc_skb(adapter
->rx_buffer_len
+ NET_IP_ALIGN
);
1213 if (unlikely(!skb
)) { /* Better luck next round */
1214 adapter
->net_stats
.rx_dropped
++;
1219 * Make buffer alignment 2 beyond a 16 byte boundary
1220 * this will result in a 16 byte aligned IP header after
1221 * the 14 byte MAC header is removed
1223 skb_reserve(skb
, NET_IP_ALIGN
);
1225 buffer_info
->alloced
= 1;
1226 buffer_info
->skb
= skb
;
1227 buffer_info
->length
= (u16
) adapter
->rx_buffer_len
;
1228 page
= virt_to_page(skb
->data
);
1229 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
1230 buffer_info
->dma
= pci_map_page(pdev
, page
, offset
,
1231 adapter
->rx_buffer_len
,
1232 PCI_DMA_FROMDEVICE
);
1233 rfd_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1234 rfd_desc
->buf_len
= cpu_to_le16(adapter
->rx_buffer_len
);
1235 rfd_desc
->coalese
= 0;
1238 rfd_next_to_use
= next_next
;
1239 if (unlikely(++next_next
== rfd_ring
->count
))
1242 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
1243 next_info
= &rfd_ring
->buffer_info
[next_next
];
1249 * Force memory writes to complete before letting h/w
1250 * know there are new descriptors to fetch. (Only
1251 * applicable for weak-ordered memory model archs,
1255 atomic_set(&rfd_ring
->next_to_use
, (int)rfd_next_to_use
);
1260 static void atl1_intr_rx(struct atl1_adapter
*adapter
)
1264 u16 rrd_next_to_clean
;
1266 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1267 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1268 struct atl1_buffer
*buffer_info
;
1269 struct rx_return_desc
*rrd
;
1270 struct sk_buff
*skb
;
1274 rrd_next_to_clean
= atomic_read(&rrd_ring
->next_to_clean
);
1277 rrd
= ATL1_RRD_DESC(rrd_ring
, rrd_next_to_clean
);
1279 if (likely(rrd
->xsz
.valid
)) { /* packet valid */
1281 /* check rrd status */
1282 if (likely(rrd
->num_buf
== 1))
1285 /* rrd seems to be bad */
1286 if (unlikely(i
-- > 0)) {
1287 /* rrd may not be DMAed completely */
1288 dev_printk(KERN_DEBUG
, &adapter
->pdev
->dev
,
1289 "incomplete RRD DMA transfer\n");
1294 dev_printk(KERN_DEBUG
, &adapter
->pdev
->dev
,
1296 /* see if update RFD index */
1297 if (rrd
->num_buf
> 1)
1298 atl1_update_rfd_index(adapter
, rrd
);
1302 if (++rrd_next_to_clean
== rrd_ring
->count
)
1303 rrd_next_to_clean
= 0;
1306 } else { /* current rrd still not be updated */
1311 /* clean alloc flag for bad rrd */
1312 atl1_clean_alloc_flag(adapter
, rrd
, 0);
1314 buffer_info
= &rfd_ring
->buffer_info
[rrd
->buf_indx
];
1315 if (++rfd_ring
->next_to_clean
== rfd_ring
->count
)
1316 rfd_ring
->next_to_clean
= 0;
1318 /* update rrd next to clean */
1319 if (++rrd_next_to_clean
== rrd_ring
->count
)
1320 rrd_next_to_clean
= 0;
1323 if (unlikely(rrd
->pkt_flg
& PACKET_FLAG_ERR
)) {
1324 if (!(rrd
->err_flg
&
1325 (ERR_FLAG_IP_CHKSUM
| ERR_FLAG_L4_CHKSUM
1327 /* packet error, don't need upstream */
1328 buffer_info
->alloced
= 0;
1335 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
1336 buffer_info
->length
, PCI_DMA_FROMDEVICE
);
1337 skb
= buffer_info
->skb
;
1338 length
= le16_to_cpu(rrd
->xsz
.xsum_sz
.pkt_size
);
1340 skb_put(skb
, length
- ETH_FCS_LEN
);
1342 /* Receive Checksum Offload */
1343 atl1_rx_checksum(adapter
, rrd
, skb
);
1344 skb
->protocol
= eth_type_trans(skb
, adapter
->netdev
);
1346 if (adapter
->vlgrp
&& (rrd
->pkt_flg
& PACKET_FLAG_VLAN_INS
)) {
1347 u16 vlan_tag
= (rrd
->vlan_tag
>> 4) |
1348 ((rrd
->vlan_tag
& 7) << 13) |
1349 ((rrd
->vlan_tag
& 8) << 9);
1350 vlan_hwaccel_rx(skb
, adapter
->vlgrp
, vlan_tag
);
1354 /* let protocol layer free skb */
1355 buffer_info
->skb
= NULL
;
1356 buffer_info
->alloced
= 0;
1359 adapter
->netdev
->last_rx
= jiffies
;
1362 atomic_set(&rrd_ring
->next_to_clean
, rrd_next_to_clean
);
1364 atl1_alloc_rx_buffers(adapter
);
1366 /* update mailbox ? */
1368 u32 tpd_next_to_use
;
1369 u32 rfd_next_to_use
;
1371 spin_lock(&adapter
->mb_lock
);
1373 tpd_next_to_use
= atomic_read(&adapter
->tpd_ring
.next_to_use
);
1375 atomic_read(&adapter
->rfd_ring
.next_to_use
);
1377 atomic_read(&adapter
->rrd_ring
.next_to_clean
);
1378 value
= ((rfd_next_to_use
& MB_RFD_PROD_INDX_MASK
) <<
1379 MB_RFD_PROD_INDX_SHIFT
) |
1380 ((rrd_next_to_clean
& MB_RRD_CONS_INDX_MASK
) <<
1381 MB_RRD_CONS_INDX_SHIFT
) |
1382 ((tpd_next_to_use
& MB_TPD_PROD_INDX_MASK
) <<
1383 MB_TPD_PROD_INDX_SHIFT
);
1384 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_MAILBOX
);
1385 spin_unlock(&adapter
->mb_lock
);
1389 static void atl1_intr_tx(struct atl1_adapter
*adapter
)
1391 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1392 struct atl1_buffer
*buffer_info
;
1393 u16 sw_tpd_next_to_clean
;
1394 u16 cmb_tpd_next_to_clean
;
1396 sw_tpd_next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1397 cmb_tpd_next_to_clean
= le16_to_cpu(adapter
->cmb
.cmb
->tpd_cons_idx
);
1399 while (cmb_tpd_next_to_clean
!= sw_tpd_next_to_clean
) {
1400 struct tx_packet_desc
*tpd
;
1402 tpd
= ATL1_TPD_DESC(tpd_ring
, sw_tpd_next_to_clean
);
1403 buffer_info
= &tpd_ring
->buffer_info
[sw_tpd_next_to_clean
];
1404 if (buffer_info
->dma
) {
1405 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
1406 buffer_info
->length
, PCI_DMA_TODEVICE
);
1407 buffer_info
->dma
= 0;
1410 if (buffer_info
->skb
) {
1411 dev_kfree_skb_irq(buffer_info
->skb
);
1412 buffer_info
->skb
= NULL
;
1414 tpd
->buffer_addr
= 0;
1417 if (++sw_tpd_next_to_clean
== tpd_ring
->count
)
1418 sw_tpd_next_to_clean
= 0;
1420 atomic_set(&tpd_ring
->next_to_clean
, sw_tpd_next_to_clean
);
1422 if (netif_queue_stopped(adapter
->netdev
)
1423 && netif_carrier_ok(adapter
->netdev
))
1424 netif_wake_queue(adapter
->netdev
);
1427 static u16
atl1_tpd_avail(struct atl1_tpd_ring
*tpd_ring
)
1429 u16 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1430 u16 next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1431 return ((next_to_clean
> next_to_use
) ?
1432 next_to_clean
- next_to_use
- 1 :
1433 tpd_ring
->count
+ next_to_clean
- next_to_use
- 1);
1436 static int atl1_tso(struct atl1_adapter
*adapter
, struct sk_buff
*skb
,
1437 struct tso_param
*tso
)
1439 /* We enter this function holding a spinlock. */
1443 if (skb_shinfo(skb
)->gso_size
) {
1444 if (skb_header_cloned(skb
)) {
1445 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
1450 if (skb
->protocol
== ntohs(ETH_P_IP
)) {
1451 struct iphdr
*iph
= ip_hdr(skb
);
1455 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
1456 iph
->daddr
, 0, IPPROTO_TCP
, 0);
1457 ipofst
= skb_network_offset(skb
);
1458 if (ipofst
!= ETH_HLEN
) /* 802.3 frame */
1459 tso
->tsopl
|= 1 << TSO_PARAM_ETHTYPE_SHIFT
;
1461 tso
->tsopl
|= (iph
->ihl
&
1462 CSUM_PARAM_IPHL_MASK
) << CSUM_PARAM_IPHL_SHIFT
;
1463 tso
->tsopl
|= (tcp_hdrlen(skb
) &
1464 TSO_PARAM_TCPHDRLEN_MASK
) <<
1465 TSO_PARAM_TCPHDRLEN_SHIFT
;
1466 tso
->tsopl
|= (skb_shinfo(skb
)->gso_size
&
1467 TSO_PARAM_MSS_MASK
) << TSO_PARAM_MSS_SHIFT
;
1468 tso
->tsopl
|= 1 << TSO_PARAM_IPCKSUM_SHIFT
;
1469 tso
->tsopl
|= 1 << TSO_PARAM_TCPCKSUM_SHIFT
;
1470 tso
->tsopl
|= 1 << TSO_PARAM_SEGMENT_SHIFT
;
1477 static int atl1_tx_csum(struct atl1_adapter
*adapter
, struct sk_buff
*skb
,
1478 struct csum_param
*csum
)
1482 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
1483 cso
= skb_transport_offset(skb
);
1484 css
= cso
+ skb
->csum_offset
;
1485 if (unlikely(cso
& 0x1)) {
1486 dev_printk(KERN_DEBUG
, &adapter
->pdev
->dev
,
1487 "payload offset not an even number\n");
1490 csum
->csumpl
|= (cso
& CSUM_PARAM_PLOADOFFSET_MASK
) <<
1491 CSUM_PARAM_PLOADOFFSET_SHIFT
;
1492 csum
->csumpl
|= (css
& CSUM_PARAM_XSUMOFFSET_MASK
) <<
1493 CSUM_PARAM_XSUMOFFSET_SHIFT
;
1494 csum
->csumpl
|= 1 << CSUM_PARAM_CUSTOMCKSUM_SHIFT
;
1501 static void atl1_tx_map(struct atl1_adapter
*adapter
, struct sk_buff
*skb
,
1504 /* We enter this function holding a spinlock. */
1505 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1506 struct atl1_buffer
*buffer_info
;
1508 int first_buf_len
= skb
->len
;
1509 unsigned long offset
;
1510 unsigned int nr_frags
;
1512 u16 tpd_next_to_use
;
1516 first_buf_len
-= skb
->data_len
;
1517 nr_frags
= skb_shinfo(skb
)->nr_frags
;
1518 tpd_next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1519 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1520 if (unlikely(buffer_info
->skb
))
1522 buffer_info
->skb
= NULL
; /* put skb in last TPD */
1526 proto_hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1527 buffer_info
->length
= proto_hdr_len
;
1528 page
= virt_to_page(skb
->data
);
1529 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
1530 buffer_info
->dma
= pci_map_page(adapter
->pdev
, page
,
1531 offset
, proto_hdr_len
,
1534 if (++tpd_next_to_use
== tpd_ring
->count
)
1535 tpd_next_to_use
= 0;
1537 if (first_buf_len
> proto_hdr_len
) {
1540 len12
= first_buf_len
- proto_hdr_len
;
1541 m
= (len12
+ ATL1_MAX_TX_BUF_LEN
- 1) /
1542 ATL1_MAX_TX_BUF_LEN
;
1543 for (i
= 0; i
< m
; i
++) {
1545 &tpd_ring
->buffer_info
[tpd_next_to_use
];
1546 buffer_info
->skb
= NULL
;
1547 buffer_info
->length
=
1548 (ATL1_MAX_TX_BUF_LEN
>=
1549 len12
) ? ATL1_MAX_TX_BUF_LEN
: len12
;
1550 len12
-= buffer_info
->length
;
1551 page
= virt_to_page(skb
->data
+
1553 i
* ATL1_MAX_TX_BUF_LEN
));
1554 offset
= (unsigned long)(skb
->data
+
1556 i
* ATL1_MAX_TX_BUF_LEN
)) & ~PAGE_MASK
;
1557 buffer_info
->dma
= pci_map_page(adapter
->pdev
,
1558 page
, offset
, buffer_info
->length
,
1560 if (++tpd_next_to_use
== tpd_ring
->count
)
1561 tpd_next_to_use
= 0;
1566 buffer_info
->length
= first_buf_len
;
1567 page
= virt_to_page(skb
->data
);
1568 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
1569 buffer_info
->dma
= pci_map_page(adapter
->pdev
, page
,
1570 offset
, first_buf_len
, PCI_DMA_TODEVICE
);
1571 if (++tpd_next_to_use
== tpd_ring
->count
)
1572 tpd_next_to_use
= 0;
1575 for (f
= 0; f
< nr_frags
; f
++) {
1576 struct skb_frag_struct
*frag
;
1579 frag
= &skb_shinfo(skb
)->frags
[f
];
1582 m
= (lenf
+ ATL1_MAX_TX_BUF_LEN
- 1) / ATL1_MAX_TX_BUF_LEN
;
1583 for (i
= 0; i
< m
; i
++) {
1584 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1585 if (unlikely(buffer_info
->skb
))
1587 buffer_info
->skb
= NULL
;
1588 buffer_info
->length
= (lenf
> ATL1_MAX_TX_BUF_LEN
) ?
1589 ATL1_MAX_TX_BUF_LEN
: lenf
;
1590 lenf
-= buffer_info
->length
;
1591 buffer_info
->dma
= pci_map_page(adapter
->pdev
,
1593 frag
->page_offset
+ (i
* ATL1_MAX_TX_BUF_LEN
),
1594 buffer_info
->length
, PCI_DMA_TODEVICE
);
1596 if (++tpd_next_to_use
== tpd_ring
->count
)
1597 tpd_next_to_use
= 0;
1601 /* last tpd's buffer-info */
1602 buffer_info
->skb
= skb
;
1605 static void atl1_tx_queue(struct atl1_adapter
*adapter
, int count
,
1606 union tpd_descr
*descr
)
1608 /* We enter this function holding a spinlock. */
1609 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1612 struct atl1_buffer
*buffer_info
;
1613 struct tx_packet_desc
*tpd
;
1614 u16 tpd_next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1616 for (j
= 0; j
< count
; j
++) {
1617 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1618 tpd
= ATL1_TPD_DESC(&adapter
->tpd_ring
, tpd_next_to_use
);
1619 tpd
->desc
.csum
.csumpu
= descr
->csum
.csumpu
;
1620 tpd
->desc
.csum
.csumpl
= descr
->csum
.csumpl
;
1621 tpd
->desc
.tso
.tsopu
= descr
->tso
.tsopu
;
1622 tpd
->desc
.tso
.tsopl
= descr
->tso
.tsopl
;
1623 tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1624 tpd
->desc
.data
= descr
->data
;
1625 tpd
->desc
.csum
.csumpu
|= (cpu_to_le16(buffer_info
->length
) &
1626 CSUM_PARAM_BUFLEN_MASK
) << CSUM_PARAM_BUFLEN_SHIFT
;
1628 val
= (descr
->tso
.tsopl
>> TSO_PARAM_SEGMENT_SHIFT
) &
1629 TSO_PARAM_SEGMENT_MASK
;
1631 tpd
->desc
.tso
.tsopl
|= 1 << TSO_PARAM_HDRFLAG_SHIFT
;
1633 if (j
== (count
- 1))
1634 tpd
->desc
.csum
.csumpl
|= 1 << CSUM_PARAM_EOP_SHIFT
;
1636 if (++tpd_next_to_use
== tpd_ring
->count
)
1637 tpd_next_to_use
= 0;
1640 * Force memory writes to complete before letting h/w
1641 * know there are new descriptors to fetch. (Only
1642 * applicable for weak-ordered memory model archs,
1647 atomic_set(&tpd_ring
->next_to_use
, (int)tpd_next_to_use
);
1650 static int atl1_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
1652 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1658 union tpd_descr param
;
1661 unsigned long flags
;
1662 unsigned int nr_frags
= 0;
1663 unsigned int mss
= 0;
1665 unsigned int proto_hdr_len
;
1667 len
-= skb
->data_len
;
1669 if (unlikely(skb
->len
== 0)) {
1670 dev_kfree_skb_any(skb
);
1671 return NETDEV_TX_OK
;
1675 param
.tso
.tsopu
= 0;
1676 param
.tso
.tsopl
= 0;
1677 param
.csum
.csumpu
= 0;
1678 param
.csum
.csumpl
= 0;
1680 /* nr_frags will be nonzero if we're doing scatter/gather (SG) */
1681 nr_frags
= skb_shinfo(skb
)->nr_frags
;
1682 for (f
= 0; f
< nr_frags
; f
++) {
1683 frag_size
= skb_shinfo(skb
)->frags
[f
].size
;
1685 count
+= (frag_size
+ ATL1_MAX_TX_BUF_LEN
- 1) /
1686 ATL1_MAX_TX_BUF_LEN
;
1689 /* mss will be nonzero if we're doing segment offload (TSO/GSO) */
1690 mss
= skb_shinfo(skb
)->gso_size
;
1692 if (skb
->protocol
== htons(ETH_P_IP
)) {
1693 proto_hdr_len
= (skb_transport_offset(skb
) +
1695 if (unlikely(proto_hdr_len
> len
)) {
1696 dev_kfree_skb_any(skb
);
1697 return NETDEV_TX_OK
;
1699 /* need additional TPD ? */
1700 if (proto_hdr_len
!= len
)
1701 count
+= (len
- proto_hdr_len
+
1702 ATL1_MAX_TX_BUF_LEN
- 1) /
1703 ATL1_MAX_TX_BUF_LEN
;
1707 if (!spin_trylock_irqsave(&adapter
->lock
, flags
)) {
1708 /* Can't get lock - tell upper layer to requeue */
1709 dev_printk(KERN_DEBUG
, &adapter
->pdev
->dev
, "tx locked\n");
1710 return NETDEV_TX_LOCKED
;
1713 if (atl1_tpd_avail(&adapter
->tpd_ring
) < count
) {
1714 /* not enough descriptors */
1715 netif_stop_queue(netdev
);
1716 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1717 dev_printk(KERN_DEBUG
, &adapter
->pdev
->dev
, "tx busy\n");
1718 return NETDEV_TX_BUSY
;
1723 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
1724 vlan_tag
= vlan_tx_tag_get(skb
);
1725 vlan_tag
= (vlan_tag
<< 4) | (vlan_tag
>> 13) |
1726 ((vlan_tag
>> 9) & 0x8);
1727 param
.csum
.csumpl
|= 1 << CSUM_PARAM_INSVLAG_SHIFT
;
1728 param
.csum
.csumpu
|= (vlan_tag
& CSUM_PARAM_VALANTAG_MASK
) <<
1729 CSUM_PARAM_VALAN_SHIFT
;
1732 tso
= atl1_tso(adapter
, skb
, ¶m
.tso
);
1734 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1735 dev_kfree_skb_any(skb
);
1736 return NETDEV_TX_OK
;
1740 ret_val
= atl1_tx_csum(adapter
, skb
, ¶m
.csum
);
1742 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1743 dev_kfree_skb_any(skb
);
1744 return NETDEV_TX_OK
;
1748 val
= (param
.csum
.csumpl
>> CSUM_PARAM_SEGMENT_SHIFT
) &
1749 CSUM_PARAM_SEGMENT_MASK
;
1750 atl1_tx_map(adapter
, skb
, 1 == val
);
1751 atl1_tx_queue(adapter
, count
, ¶m
);
1752 netdev
->trans_start
= jiffies
;
1753 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1754 atl1_update_mailbox(adapter
);
1755 return NETDEV_TX_OK
;
1759 * atl1_intr - Interrupt Handler
1760 * @irq: interrupt number
1761 * @data: pointer to a network interface device structure
1762 * @pt_regs: CPU registers structure
1764 static irqreturn_t
atl1_intr(int irq
, void *data
)
1766 struct atl1_adapter
*adapter
= netdev_priv(data
);
1770 status
= adapter
->cmb
.cmb
->int_stats
;
1775 /* clear CMB interrupt status at once */
1776 adapter
->cmb
.cmb
->int_stats
= 0;
1778 if (status
& ISR_GPHY
) /* clear phy status */
1779 atl1_clear_phy_int(adapter
);
1781 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
1782 iowrite32(status
| ISR_DIS_INT
, adapter
->hw
.hw_addr
+ REG_ISR
);
1784 /* check if SMB intr */
1785 if (status
& ISR_SMB
)
1786 atl1_inc_smb(adapter
);
1788 /* check if PCIE PHY Link down */
1789 if (status
& ISR_PHY_LINKDOWN
) {
1790 dev_printk(KERN_DEBUG
, &adapter
->pdev
->dev
,
1791 "pcie phy link down %x\n", status
);
1792 if (netif_running(adapter
->netdev
)) { /* reset MAC */
1793 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
1794 schedule_work(&adapter
->pcie_dma_to_rst_task
);
1799 /* check if DMA read/write error ? */
1800 if (status
& (ISR_DMAR_TO_RST
| ISR_DMAW_TO_RST
)) {
1801 dev_printk(KERN_DEBUG
, &adapter
->pdev
->dev
,
1802 "pcie DMA r/w error (status = 0x%x)\n",
1804 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
1805 schedule_work(&adapter
->pcie_dma_to_rst_task
);
1810 if (status
& ISR_GPHY
) {
1811 adapter
->soft_stats
.tx_carrier_errors
++;
1812 atl1_check_for_link(adapter
);
1815 /* transmit event */
1816 if (status
& ISR_CMB_TX
)
1817 atl1_intr_tx(adapter
);
1820 if (unlikely(status
& (ISR_RXF_OV
| ISR_RFD_UNRUN
|
1821 ISR_RRD_OV
| ISR_HOST_RFD_UNRUN
|
1822 ISR_HOST_RRD_OV
| ISR_CMB_RX
))) {
1823 if (status
& (ISR_RXF_OV
| ISR_RFD_UNRUN
|
1824 ISR_RRD_OV
| ISR_HOST_RFD_UNRUN
|
1826 dev_printk(KERN_DEBUG
, &adapter
->pdev
->dev
,
1827 "rx exception, ISR = 0x%x\n", status
);
1828 atl1_intr_rx(adapter
);
1834 } while ((status
= adapter
->cmb
.cmb
->int_stats
));
1836 /* re-enable Interrupt */
1837 iowrite32(ISR_DIS_SMB
| ISR_DIS_DMA
, adapter
->hw
.hw_addr
+ REG_ISR
);
1842 * atl1_watchdog - Timer Call-back
1843 * @data: pointer to netdev cast into an unsigned long
1845 static void atl1_watchdog(unsigned long data
)
1847 struct atl1_adapter
*adapter
= (struct atl1_adapter
*)data
;
1849 /* Reset the timer */
1850 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1854 * atl1_phy_config - Timer Call-back
1855 * @data: pointer to netdev cast into an unsigned long
1857 static void atl1_phy_config(unsigned long data
)
1859 struct atl1_adapter
*adapter
= (struct atl1_adapter
*)data
;
1860 struct atl1_hw
*hw
= &adapter
->hw
;
1861 unsigned long flags
;
1863 spin_lock_irqsave(&adapter
->lock
, flags
);
1864 adapter
->phy_timer_pending
= false;
1865 atl1_write_phy_reg(hw
, MII_ADVERTISE
, hw
->mii_autoneg_adv_reg
);
1866 atl1_write_phy_reg(hw
, MII_AT001_CR
, hw
->mii_1000t_ctrl_reg
);
1867 atl1_write_phy_reg(hw
, MII_BMCR
, MII_CR_RESET
| MII_CR_AUTO_NEG_EN
);
1868 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1872 * atl1_tx_timeout - Respond to a Tx Hang
1873 * @netdev: network interface device structure
1875 static void atl1_tx_timeout(struct net_device
*netdev
)
1877 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1878 /* Do the reset outside of interrupt context */
1879 schedule_work(&adapter
->tx_timeout_task
);
1883 * Orphaned vendor comment left intact here:
1885 * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
1886 * will assert. We do soft reset <0x1400=1> according
1887 * with the SPEC. BUT, it seemes that PCIE or DMA
1888 * state-machine will not be reset. DMAR_TO_INT will
1889 * assert again and again.
1892 static void atl1_tx_timeout_task(struct work_struct
*work
)
1894 struct atl1_adapter
*adapter
=
1895 container_of(work
, struct atl1_adapter
, tx_timeout_task
);
1896 struct net_device
*netdev
= adapter
->netdev
;
1898 netif_device_detach(netdev
);
1901 netif_device_attach(netdev
);
1905 * atl1_link_chg_task - deal with link change event Out of interrupt context
1907 static void atl1_link_chg_task(struct work_struct
*work
)
1909 struct atl1_adapter
*adapter
=
1910 container_of(work
, struct atl1_adapter
, link_chg_task
);
1911 unsigned long flags
;
1913 spin_lock_irqsave(&adapter
->lock
, flags
);
1914 atl1_check_link(adapter
);
1915 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1918 static void atl1_vlan_rx_register(struct net_device
*netdev
,
1919 struct vlan_group
*grp
)
1921 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1922 unsigned long flags
;
1925 spin_lock_irqsave(&adapter
->lock
, flags
);
1926 /* atl1_irq_disable(adapter); */
1927 adapter
->vlgrp
= grp
;
1930 /* enable VLAN tag insert/strip */
1931 ctrl
= ioread32(adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1932 ctrl
|= MAC_CTRL_RMV_VLAN
;
1933 iowrite32(ctrl
, adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1935 /* disable VLAN tag insert/strip */
1936 ctrl
= ioread32(adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1937 ctrl
&= ~MAC_CTRL_RMV_VLAN
;
1938 iowrite32(ctrl
, adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1941 /* atl1_irq_enable(adapter); */
1942 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1945 static void atl1_restore_vlan(struct atl1_adapter
*adapter
)
1947 atl1_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
1950 int atl1_reset(struct atl1_adapter
*adapter
)
1954 ret
= atl1_reset_hw(&adapter
->hw
);
1955 if (ret
!= ATL1_SUCCESS
)
1957 return atl1_init_hw(&adapter
->hw
);
1960 s32
atl1_up(struct atl1_adapter
*adapter
)
1962 struct net_device
*netdev
= adapter
->netdev
;
1964 int irq_flags
= IRQF_SAMPLE_RANDOM
;
1966 /* hardware has been reset, we need to reload some things */
1967 atl1_set_multi(netdev
);
1968 atl1_init_ring_ptrs(adapter
);
1969 atl1_restore_vlan(adapter
);
1970 err
= atl1_alloc_rx_buffers(adapter
);
1971 if (unlikely(!err
)) /* no RX BUFFER allocated */
1974 if (unlikely(atl1_configure(adapter
))) {
1979 err
= pci_enable_msi(adapter
->pdev
);
1981 dev_info(&adapter
->pdev
->dev
,
1982 "Unable to enable MSI: %d\n", err
);
1983 irq_flags
|= IRQF_SHARED
;
1986 err
= request_irq(adapter
->pdev
->irq
, &atl1_intr
, irq_flags
,
1987 netdev
->name
, netdev
);
1991 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1992 atl1_irq_enable(adapter
);
1993 atl1_check_link(adapter
);
1997 pci_disable_msi(adapter
->pdev
);
1998 /* free rx_buffers */
1999 atl1_clean_rx_ring(adapter
);
2003 void atl1_down(struct atl1_adapter
*adapter
)
2005 struct net_device
*netdev
= adapter
->netdev
;
2007 del_timer_sync(&adapter
->watchdog_timer
);
2008 del_timer_sync(&adapter
->phy_config_timer
);
2009 adapter
->phy_timer_pending
= false;
2011 atl1_irq_disable(adapter
);
2012 free_irq(adapter
->pdev
->irq
, netdev
);
2013 pci_disable_msi(adapter
->pdev
);
2014 atl1_reset_hw(&adapter
->hw
);
2015 adapter
->cmb
.cmb
->int_stats
= 0;
2017 adapter
->link_speed
= SPEED_0
;
2018 adapter
->link_duplex
= -1;
2019 netif_carrier_off(netdev
);
2020 netif_stop_queue(netdev
);
2022 atl1_clean_tx_ring(adapter
);
2023 atl1_clean_rx_ring(adapter
);
2027 * atl1_open - Called when a network interface is made active
2028 * @netdev: network interface device structure
2030 * Returns 0 on success, negative value on failure
2032 * The open entry point is called when a network interface is made
2033 * active by the system (IFF_UP). At this point all resources needed
2034 * for transmit and receive operations are allocated, the interrupt
2035 * handler is registered with the OS, the watchdog timer is started,
2036 * and the stack is notified that the interface is ready.
2038 static int atl1_open(struct net_device
*netdev
)
2040 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2043 /* allocate transmit descriptors */
2044 err
= atl1_setup_ring_resources(adapter
);
2048 err
= atl1_up(adapter
);
2055 atl1_reset(adapter
);
2060 * atl1_close - Disables a network interface
2061 * @netdev: network interface device structure
2063 * Returns 0, this is not allowed to fail
2065 * The close entry point is called when an interface is de-activated
2066 * by the OS. The hardware is still under the drivers control, but
2067 * needs to be disabled. A global MAC reset is issued to stop the
2068 * hardware, and all transmit and receive resources are freed.
2070 static int atl1_close(struct net_device
*netdev
)
2072 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2074 atl1_free_ring_resources(adapter
);
2079 static int atl1_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2081 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2082 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2083 struct atl1_hw
*hw
= &adapter
->hw
;
2085 u32 wufc
= adapter
->wol
;
2087 netif_device_detach(netdev
);
2088 if (netif_running(netdev
))
2091 atl1_read_phy_reg(hw
, MII_BMSR
, (u16
*) & ctrl
);
2092 atl1_read_phy_reg(hw
, MII_BMSR
, (u16
*) & ctrl
);
2093 if (ctrl
& BMSR_LSTATUS
)
2094 wufc
&= ~ATL1_WUFC_LNKC
;
2096 /* reduce speed to 10/100M */
2098 atl1_phy_enter_power_saving(hw
);
2099 /* if resume, let driver to re- setup link */
2100 hw
->phy_configured
= false;
2101 atl1_set_mac_addr(hw
);
2102 atl1_set_multi(netdev
);
2105 /* turn on magic packet wol */
2106 if (wufc
& ATL1_WUFC_MAG
)
2107 ctrl
= WOL_MAGIC_EN
| WOL_MAGIC_PME_EN
;
2109 /* turn on Link change WOL */
2110 if (wufc
& ATL1_WUFC_LNKC
)
2111 ctrl
|= (WOL_LINK_CHG_EN
| WOL_LINK_CHG_PME_EN
);
2112 iowrite32(ctrl
, hw
->hw_addr
+ REG_WOL_CTRL
);
2114 /* turn on all-multi mode if wake on multicast is enabled */
2115 ctrl
= ioread32(hw
->hw_addr
+ REG_MAC_CTRL
);
2116 ctrl
&= ~MAC_CTRL_DBG
;
2117 ctrl
&= ~MAC_CTRL_PROMIS_EN
;
2118 if (wufc
& ATL1_WUFC_MC
)
2119 ctrl
|= MAC_CTRL_MC_ALL_EN
;
2121 ctrl
&= ~MAC_CTRL_MC_ALL_EN
;
2123 /* turn on broadcast mode if wake on-BC is enabled */
2124 if (wufc
& ATL1_WUFC_BC
)
2125 ctrl
|= MAC_CTRL_BC_EN
;
2127 ctrl
&= ~MAC_CTRL_BC_EN
;
2130 ctrl
|= MAC_CTRL_RX_EN
;
2131 iowrite32(ctrl
, hw
->hw_addr
+ REG_MAC_CTRL
);
2132 pci_enable_wake(pdev
, PCI_D3hot
, 1);
2133 pci_enable_wake(pdev
, PCI_D3cold
, 1);
2135 iowrite32(0, hw
->hw_addr
+ REG_WOL_CTRL
);
2136 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2137 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2140 pci_save_state(pdev
);
2141 pci_disable_device(pdev
);
2143 pci_set_power_state(pdev
, PCI_D3hot
);
2148 static int atl1_resume(struct pci_dev
*pdev
)
2150 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2151 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2154 pci_set_power_state(pdev
, 0);
2155 pci_restore_state(pdev
);
2157 ret_val
= pci_enable_device(pdev
);
2158 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2159 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2161 iowrite32(0, adapter
->hw
.hw_addr
+ REG_WOL_CTRL
);
2162 atl1_reset(adapter
);
2164 if (netif_running(netdev
))
2166 netif_device_attach(netdev
);
2168 atl1_via_workaround(adapter
);
2173 #define atl1_suspend NULL
2174 #define atl1_resume NULL
2177 #ifdef CONFIG_NET_POLL_CONTROLLER
2178 static void atl1_poll_controller(struct net_device
*netdev
)
2180 disable_irq(netdev
->irq
);
2181 atl1_intr(netdev
->irq
, netdev
);
2182 enable_irq(netdev
->irq
);
2187 * atl1_probe - Device Initialization Routine
2188 * @pdev: PCI device information struct
2189 * @ent: entry in atl1_pci_tbl
2191 * Returns 0 on success, negative on failure
2193 * atl1_probe initializes an adapter identified by a pci_dev structure.
2194 * The OS initialization, configuring of the adapter private structure,
2195 * and a hardware reset occur.
2197 static int __devinit
atl1_probe(struct pci_dev
*pdev
,
2198 const struct pci_device_id
*ent
)
2200 struct net_device
*netdev
;
2201 struct atl1_adapter
*adapter
;
2202 static int cards_found
= 0;
2205 err
= pci_enable_device(pdev
);
2210 * The atl1 chip can DMA to 64-bit addresses, but it uses a single
2211 * shared register for the high 32 bits, so only a single, aligned,
2212 * 4 GB physical address range can be used at a time.
2214 * Supporting 64-bit DMA on this hardware is more trouble than it's
2215 * worth. It is far easier to limit to 32-bit DMA than update
2216 * various kernel subsystems to support the mechanics required by a
2217 * fixed-high-32-bit system.
2219 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
2221 dev_err(&pdev
->dev
, "no usable DMA configuration\n");
2224 /* Mark all PCI regions associated with PCI device
2225 * pdev as being reserved by owner atl1_driver_name
2227 err
= pci_request_regions(pdev
, atl1_driver_name
);
2229 goto err_request_regions
;
2231 /* Enables bus-mastering on the device and calls
2232 * pcibios_set_master to do the needed arch specific settings
2234 pci_set_master(pdev
);
2236 netdev
= alloc_etherdev(sizeof(struct atl1_adapter
));
2239 goto err_alloc_etherdev
;
2241 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2243 pci_set_drvdata(pdev
, netdev
);
2244 adapter
= netdev_priv(netdev
);
2245 adapter
->netdev
= netdev
;
2246 adapter
->pdev
= pdev
;
2247 adapter
->hw
.back
= adapter
;
2249 adapter
->hw
.hw_addr
= pci_iomap(pdev
, 0, 0);
2250 if (!adapter
->hw
.hw_addr
) {
2254 /* get device revision number */
2255 adapter
->hw
.dev_rev
= ioread16(adapter
->hw
.hw_addr
+
2256 (REG_MASTER_CTRL
+ 2));
2257 dev_info(&pdev
->dev
, "version %s\n", DRIVER_VERSION
);
2259 /* set default ring resource counts */
2260 adapter
->rfd_ring
.count
= adapter
->rrd_ring
.count
= ATL1_DEFAULT_RFD
;
2261 adapter
->tpd_ring
.count
= ATL1_DEFAULT_TPD
;
2263 adapter
->mii
.dev
= netdev
;
2264 adapter
->mii
.mdio_read
= mdio_read
;
2265 adapter
->mii
.mdio_write
= mdio_write
;
2266 adapter
->mii
.phy_id_mask
= 0x1f;
2267 adapter
->mii
.reg_num_mask
= 0x1f;
2269 netdev
->open
= &atl1_open
;
2270 netdev
->stop
= &atl1_close
;
2271 netdev
->hard_start_xmit
= &atl1_xmit_frame
;
2272 netdev
->get_stats
= &atl1_get_stats
;
2273 netdev
->set_multicast_list
= &atl1_set_multi
;
2274 netdev
->set_mac_address
= &atl1_set_mac
;
2275 netdev
->change_mtu
= &atl1_change_mtu
;
2276 netdev
->do_ioctl
= &atl1_ioctl
;
2277 netdev
->tx_timeout
= &atl1_tx_timeout
;
2278 netdev
->watchdog_timeo
= 5 * HZ
;
2279 #ifdef CONFIG_NET_POLL_CONTROLLER
2280 netdev
->poll_controller
= atl1_poll_controller
;
2282 netdev
->vlan_rx_register
= atl1_vlan_rx_register
;
2284 netdev
->ethtool_ops
= &atl1_ethtool_ops
;
2285 adapter
->bd_number
= cards_found
;
2287 /* setup the private structure */
2288 err
= atl1_sw_init(adapter
);
2292 netdev
->features
= NETIF_F_HW_CSUM
;
2293 netdev
->features
|= NETIF_F_SG
;
2294 netdev
->features
|= (NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_RX
);
2297 * FIXME - Until tso performance gets fixed, disable the feature.
2298 * Enable it with ethtool -K if desired.
2300 /* netdev->features |= NETIF_F_TSO; */
2302 netdev
->features
|= NETIF_F_LLTX
;
2305 * patch for some L1 of old version,
2306 * the final version of L1 may not need these
2309 /* atl1_pcie_patch(adapter); */
2311 /* really reset GPHY core */
2312 iowrite16(0, adapter
->hw
.hw_addr
+ REG_GPHY_ENABLE
);
2315 * reset the controller to
2316 * put the device in a known good starting state
2318 if (atl1_reset_hw(&adapter
->hw
)) {
2323 /* copy the MAC address out of the EEPROM */
2324 atl1_read_mac_addr(&adapter
->hw
);
2325 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2327 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
2332 atl1_check_options(adapter
);
2334 /* pre-init the MAC, and setup link */
2335 err
= atl1_init_hw(&adapter
->hw
);
2341 atl1_pcie_patch(adapter
);
2342 /* assume we have no link for now */
2343 netif_carrier_off(netdev
);
2344 netif_stop_queue(netdev
);
2346 init_timer(&adapter
->watchdog_timer
);
2347 adapter
->watchdog_timer
.function
= &atl1_watchdog
;
2348 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
2350 init_timer(&adapter
->phy_config_timer
);
2351 adapter
->phy_config_timer
.function
= &atl1_phy_config
;
2352 adapter
->phy_config_timer
.data
= (unsigned long)adapter
;
2353 adapter
->phy_timer_pending
= false;
2355 INIT_WORK(&adapter
->tx_timeout_task
, atl1_tx_timeout_task
);
2357 INIT_WORK(&adapter
->link_chg_task
, atl1_link_chg_task
);
2359 INIT_WORK(&adapter
->pcie_dma_to_rst_task
, atl1_tx_timeout_task
);
2361 err
= register_netdev(netdev
);
2366 atl1_via_workaround(adapter
);
2370 pci_iounmap(pdev
, adapter
->hw
.hw_addr
);
2372 free_netdev(netdev
);
2374 pci_release_regions(pdev
);
2376 err_request_regions
:
2377 pci_disable_device(pdev
);
2382 * atl1_remove - Device Removal Routine
2383 * @pdev: PCI device information struct
2385 * atl1_remove is called by the PCI subsystem to alert the driver
2386 * that it should release a PCI device. The could be caused by a
2387 * Hot-Plug event, or because the driver is going to be removed from
2390 static void __devexit
atl1_remove(struct pci_dev
*pdev
)
2392 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2393 struct atl1_adapter
*adapter
;
2394 /* Device not available. Return. */
2398 adapter
= netdev_priv(netdev
);
2400 /* Some atl1 boards lack persistent storage for their MAC, and get it
2401 * from the BIOS during POST. If we've been messing with the MAC
2402 * address, we need to save the permanent one.
2404 if (memcmp(adapter
->hw
.mac_addr
, adapter
->hw
.perm_mac_addr
, ETH_ALEN
)) {
2405 memcpy(adapter
->hw
.mac_addr
, adapter
->hw
.perm_mac_addr
,
2407 atl1_set_mac_addr(&adapter
->hw
);
2410 iowrite16(0, adapter
->hw
.hw_addr
+ REG_GPHY_ENABLE
);
2411 unregister_netdev(netdev
);
2412 pci_iounmap(pdev
, adapter
->hw
.hw_addr
);
2413 pci_release_regions(pdev
);
2414 free_netdev(netdev
);
2415 pci_disable_device(pdev
);
2418 static struct pci_driver atl1_driver
= {
2419 .name
= atl1_driver_name
,
2420 .id_table
= atl1_pci_tbl
,
2421 .probe
= atl1_probe
,
2422 .remove
= __devexit_p(atl1_remove
),
2423 .suspend
= atl1_suspend
,
2424 .resume
= atl1_resume
2428 * atl1_exit_module - Driver Exit Cleanup Routine
2430 * atl1_exit_module is called just before the driver is removed
2433 static void __exit
atl1_exit_module(void)
2435 pci_unregister_driver(&atl1_driver
);
2439 * atl1_init_module - Driver Registration Routine
2441 * atl1_init_module is the first routine called when the driver is
2442 * loaded. All it does is register with the PCI subsystem.
2444 static int __init
atl1_init_module(void)
2446 return pci_register_driver(&atl1_driver
);
2449 module_init(atl1_init_module
);
2450 module_exit(atl1_exit_module
);