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, including set ring parameters.
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/irqreturn.h>
63 #include <linux/workqueue.h>
64 #include <linux/timer.h>
65 #include <linux/jiffies.h>
66 #include <linux/hardirq.h>
67 #include <linux/interrupt.h>
68 #include <linux/irqflags.h>
69 #include <linux/dma-mapping.h>
70 #include <linux/net.h>
74 #include <linux/tcp.h>
75 #include <linux/compiler.h>
76 #include <linux/delay.h>
77 #include <linux/mii.h>
78 #include <net/checksum.h>
80 #include <asm/atomic.h>
81 #include <asm/byteorder.h>
85 #define DRIVER_VERSION "2.0.7"
87 char atl1_driver_name
[] = "atl1";
88 static const char atl1_driver_string
[] = "Attansic L1 Ethernet Network Driver";
89 static const char atl1_copyright
[] = "Copyright(c) 2005-2006 Attansic Corporation.";
90 char atl1_driver_version
[] = DRIVER_VERSION
;
93 ("Attansic Corporation <xiong_huang@attansic.com>, Chris Snook <csnook@redhat.com>, Jay Cliburn <jcliburn@gmail.com>");
94 MODULE_DESCRIPTION("Attansic 1000M Ethernet Network Driver");
95 MODULE_LICENSE("GPL");
96 MODULE_VERSION(DRIVER_VERSION
);
99 * atl1_pci_tbl - PCI Device ID Table
101 static const struct pci_device_id atl1_pci_tbl
[] = {
102 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC
, PCI_DEVICE_ID_ATTANSIC_L1
)},
103 /* required last entry */
107 MODULE_DEVICE_TABLE(pci
, atl1_pci_tbl
);
110 * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
111 * @adapter: board private structure to initialize
113 * atl1_sw_init initializes the Adapter private data structure.
114 * Fields are initialized based on PCI device information and
115 * OS network device settings (MTU size).
117 static int __devinit
atl1_sw_init(struct atl1_adapter
*adapter
)
119 struct atl1_hw
*hw
= &adapter
->hw
;
120 struct net_device
*netdev
= adapter
->netdev
;
121 struct pci_dev
*pdev
= adapter
->pdev
;
123 /* PCI config space info */
124 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
126 hw
->max_frame_size
= netdev
->mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
127 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
130 adapter
->rx_buffer_len
= (hw
->max_frame_size
+ 7) & ~7;
131 adapter
->ict
= 50000; /* 100ms */
132 adapter
->link_speed
= SPEED_0
; /* hardware init */
133 adapter
->link_duplex
= FULL_DUPLEX
;
135 hw
->phy_configured
= false;
136 hw
->preamble_len
= 7;
146 hw
->rfd_fetch_gap
= 1;
147 hw
->rx_jumbo_th
= adapter
->rx_buffer_len
/ 8;
148 hw
->rx_jumbo_lkah
= 1;
149 hw
->rrd_ret_timer
= 16;
151 hw
->tpd_fetch_th
= 16;
152 hw
->txf_burst
= 0x100;
153 hw
->tx_jumbo_task_th
= (hw
->max_frame_size
+ 7) >> 3;
154 hw
->tpd_fetch_gap
= 1;
155 hw
->rcb_value
= atl1_rcb_64
;
156 hw
->dma_ord
= atl1_dma_ord_enh
;
157 hw
->dmar_block
= atl1_dma_req_256
;
158 hw
->dmaw_block
= atl1_dma_req_256
;
161 hw
->cmb_rx_timer
= 1; /* about 2us */
162 hw
->cmb_tx_timer
= 1; /* about 2us */
163 hw
->smb_timer
= 100000; /* about 200ms */
165 atomic_set(&adapter
->irq_sem
, 0);
166 spin_lock_init(&adapter
->lock
);
167 spin_lock_init(&adapter
->mb_lock
);
173 * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
174 * @adapter: board private structure
176 * Return 0 on success, negative on failure
178 s32
atl1_setup_ring_resources(struct atl1_adapter
*adapter
)
180 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
181 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
182 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
183 struct atl1_ring_header
*ring_header
= &adapter
->ring_header
;
184 struct pci_dev
*pdev
= adapter
->pdev
;
188 size
= sizeof(struct atl1_buffer
) * (tpd_ring
->count
+ rfd_ring
->count
);
189 tpd_ring
->buffer_info
= kzalloc(size
, GFP_KERNEL
);
190 if (unlikely(!tpd_ring
->buffer_info
)) {
191 printk(KERN_WARNING
"%s: kzalloc failed , size = D%d\n",
192 atl1_driver_name
, size
);
195 rfd_ring
->buffer_info
=
196 (struct atl1_buffer
*)(tpd_ring
->buffer_info
+ tpd_ring
->count
);
198 /* real ring DMA buffer */
199 ring_header
->size
= size
= sizeof(struct tx_packet_desc
) *
201 + sizeof(struct rx_free_desc
) * rfd_ring
->count
202 + sizeof(struct rx_return_desc
) * rrd_ring
->count
203 + sizeof(struct coals_msg_block
)
204 + sizeof(struct stats_msg_block
)
205 + 40; /* "40: for 8 bytes align" huh? -- CHS */
207 ring_header
->desc
= pci_alloc_consistent(pdev
, ring_header
->size
,
209 if (unlikely(!ring_header
->desc
)) {
211 "%s: pci_alloc_consistent failed, size = D%d\n",
212 atl1_driver_name
, size
);
216 memset(ring_header
->desc
, 0, ring_header
->size
);
219 tpd_ring
->dma
= ring_header
->dma
;
220 offset
= (tpd_ring
->dma
& 0x7) ? (8 - (ring_header
->dma
& 0x7)) : 0;
221 tpd_ring
->dma
+= offset
;
222 tpd_ring
->desc
= (u8
*) ring_header
->desc
+ offset
;
223 tpd_ring
->size
= sizeof(struct tx_packet_desc
) * tpd_ring
->count
;
224 atomic_set(&tpd_ring
->next_to_use
, 0);
225 atomic_set(&tpd_ring
->next_to_clean
, 0);
228 rfd_ring
->dma
= tpd_ring
->dma
+ tpd_ring
->size
;
229 offset
= (rfd_ring
->dma
& 0x7) ? (8 - (rfd_ring
->dma
& 0x7)) : 0;
230 rfd_ring
->dma
+= offset
;
231 rfd_ring
->desc
= (u8
*) tpd_ring
->desc
+ (tpd_ring
->size
+ offset
);
232 rfd_ring
->size
= sizeof(struct rx_free_desc
) * rfd_ring
->count
;
233 rfd_ring
->next_to_clean
= 0;
234 /* rfd_ring->next_to_use = rfd_ring->count - 1; */
235 atomic_set(&rfd_ring
->next_to_use
, 0);
238 rrd_ring
->dma
= rfd_ring
->dma
+ rfd_ring
->size
;
239 offset
= (rrd_ring
->dma
& 0x7) ? (8 - (rrd_ring
->dma
& 0x7)) : 0;
240 rrd_ring
->dma
+= offset
;
241 rrd_ring
->desc
= (u8
*) rfd_ring
->desc
+ (rfd_ring
->size
+ offset
);
242 rrd_ring
->size
= sizeof(struct rx_return_desc
) * rrd_ring
->count
;
243 rrd_ring
->next_to_use
= 0;
244 atomic_set(&rrd_ring
->next_to_clean
, 0);
247 adapter
->cmb
.dma
= rrd_ring
->dma
+ rrd_ring
->size
;
248 offset
= (adapter
->cmb
.dma
& 0x7) ? (8 - (adapter
->cmb
.dma
& 0x7)) : 0;
249 adapter
->cmb
.dma
+= offset
;
251 (struct coals_msg_block
*) ((u8
*) rrd_ring
->desc
+
252 (rrd_ring
->size
+ offset
));
255 adapter
->smb
.dma
= adapter
->cmb
.dma
+ sizeof(struct coals_msg_block
);
256 offset
= (adapter
->smb
.dma
& 0x7) ? (8 - (adapter
->smb
.dma
& 0x7)) : 0;
257 adapter
->smb
.dma
+= offset
;
258 adapter
->smb
.smb
= (struct stats_msg_block
*)
259 ((u8
*) adapter
->cmb
.cmb
+ (sizeof(struct coals_msg_block
) + offset
));
264 kfree(tpd_ring
->buffer_info
);
269 * atl1_irq_enable - Enable default interrupt generation settings
270 * @adapter: board private structure
272 static void atl1_irq_enable(struct atl1_adapter
*adapter
)
274 if (likely(!atomic_dec_and_test(&adapter
->irq_sem
)))
275 iowrite32(IMR_NORMAL_MASK
, adapter
->hw
.hw_addr
+ REG_IMR
);
278 static void atl1_clear_phy_int(struct atl1_adapter
*adapter
)
283 spin_lock_irqsave(&adapter
->lock
, flags
);
284 atl1_read_phy_reg(&adapter
->hw
, 19, &phy_data
);
285 spin_unlock_irqrestore(&adapter
->lock
, flags
);
288 static void atl1_inc_smb(struct atl1_adapter
*adapter
)
290 struct stats_msg_block
*smb
= adapter
->smb
.smb
;
292 /* Fill out the OS statistics structure */
293 adapter
->soft_stats
.rx_packets
+= smb
->rx_ok
;
294 adapter
->soft_stats
.tx_packets
+= smb
->tx_ok
;
295 adapter
->soft_stats
.rx_bytes
+= smb
->rx_byte_cnt
;
296 adapter
->soft_stats
.tx_bytes
+= smb
->tx_byte_cnt
;
297 adapter
->soft_stats
.multicast
+= smb
->rx_mcast
;
298 adapter
->soft_stats
.collisions
+= (smb
->tx_1_col
+
302 adapter
->hw
.max_retry
);
305 adapter
->soft_stats
.rx_errors
+= (smb
->rx_frag
+
310 smb
->rx_rrd_ov
+ smb
->rx_align_err
);
311 adapter
->soft_stats
.rx_fifo_errors
+= smb
->rx_rxf_ov
;
312 adapter
->soft_stats
.rx_length_errors
+= smb
->rx_len_err
;
313 adapter
->soft_stats
.rx_crc_errors
+= smb
->rx_fcs_err
;
314 adapter
->soft_stats
.rx_frame_errors
+= smb
->rx_align_err
;
315 adapter
->soft_stats
.rx_missed_errors
+= (smb
->rx_rrd_ov
+
318 adapter
->soft_stats
.rx_pause
+= smb
->rx_pause
;
319 adapter
->soft_stats
.rx_rrd_ov
+= smb
->rx_rrd_ov
;
320 adapter
->soft_stats
.rx_trunc
+= smb
->rx_sz_ov
;
323 adapter
->soft_stats
.tx_errors
+= (smb
->tx_late_col
+
325 smb
->tx_underrun
+ smb
->tx_trunc
);
326 adapter
->soft_stats
.tx_fifo_errors
+= smb
->tx_underrun
;
327 adapter
->soft_stats
.tx_aborted_errors
+= smb
->tx_abort_col
;
328 adapter
->soft_stats
.tx_window_errors
+= smb
->tx_late_col
;
330 adapter
->soft_stats
.excecol
+= smb
->tx_abort_col
;
331 adapter
->soft_stats
.deffer
+= smb
->tx_defer
;
332 adapter
->soft_stats
.scc
+= smb
->tx_1_col
;
333 adapter
->soft_stats
.mcc
+= smb
->tx_2_col
;
334 adapter
->soft_stats
.latecol
+= smb
->tx_late_col
;
335 adapter
->soft_stats
.tx_underun
+= smb
->tx_underrun
;
336 adapter
->soft_stats
.tx_trunc
+= smb
->tx_trunc
;
337 adapter
->soft_stats
.tx_pause
+= smb
->tx_pause
;
339 adapter
->net_stats
.rx_packets
= adapter
->soft_stats
.rx_packets
;
340 adapter
->net_stats
.tx_packets
= adapter
->soft_stats
.tx_packets
;
341 adapter
->net_stats
.rx_bytes
= adapter
->soft_stats
.rx_bytes
;
342 adapter
->net_stats
.tx_bytes
= adapter
->soft_stats
.tx_bytes
;
343 adapter
->net_stats
.multicast
= adapter
->soft_stats
.multicast
;
344 adapter
->net_stats
.collisions
= adapter
->soft_stats
.collisions
;
345 adapter
->net_stats
.rx_errors
= adapter
->soft_stats
.rx_errors
;
346 adapter
->net_stats
.rx_over_errors
=
347 adapter
->soft_stats
.rx_missed_errors
;
348 adapter
->net_stats
.rx_length_errors
=
349 adapter
->soft_stats
.rx_length_errors
;
350 adapter
->net_stats
.rx_crc_errors
= adapter
->soft_stats
.rx_crc_errors
;
351 adapter
->net_stats
.rx_frame_errors
=
352 adapter
->soft_stats
.rx_frame_errors
;
353 adapter
->net_stats
.rx_fifo_errors
= adapter
->soft_stats
.rx_fifo_errors
;
354 adapter
->net_stats
.rx_missed_errors
=
355 adapter
->soft_stats
.rx_missed_errors
;
356 adapter
->net_stats
.tx_errors
= adapter
->soft_stats
.tx_errors
;
357 adapter
->net_stats
.tx_fifo_errors
= adapter
->soft_stats
.tx_fifo_errors
;
358 adapter
->net_stats
.tx_aborted_errors
=
359 adapter
->soft_stats
.tx_aborted_errors
;
360 adapter
->net_stats
.tx_window_errors
=
361 adapter
->soft_stats
.tx_window_errors
;
362 adapter
->net_stats
.tx_carrier_errors
=
363 adapter
->soft_stats
.tx_carrier_errors
;
366 static void atl1_rx_checksum(struct atl1_adapter
*adapter
,
367 struct rx_return_desc
*rrd
,
370 skb
->ip_summed
= CHECKSUM_NONE
;
372 if (unlikely(rrd
->pkt_flg
& PACKET_FLAG_ERR
)) {
373 if (rrd
->err_flg
& (ERR_FLAG_CRC
| ERR_FLAG_TRUNC
|
374 ERR_FLAG_CODE
| ERR_FLAG_OV
)) {
375 adapter
->hw_csum_err
++;
376 printk(KERN_DEBUG
"%s: rx checksum error\n",
383 if (!(rrd
->pkt_flg
& PACKET_FLAG_IPV4
))
384 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
388 if (likely(!(rrd
->err_flg
&
389 (ERR_FLAG_IP_CHKSUM
| ERR_FLAG_L4_CHKSUM
)))) {
390 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
391 adapter
->hw_csum_good
++;
395 /* IPv4, but hardware thinks its checksum is wrong */
396 printk(KERN_DEBUG
"%s: hw csum wrong pkt_flag:%x, err_flag:%x\n",
397 atl1_driver_name
, rrd
->pkt_flg
, rrd
->err_flg
);
398 skb
->ip_summed
= CHECKSUM_COMPLETE
;
399 skb
->csum
= htons(rrd
->xsz
.xsum_sz
.rx_chksum
);
400 adapter
->hw_csum_err
++;
405 * atl1_alloc_rx_buffers - Replace used receive buffers
406 * @adapter: address of board private structure
408 static u16
atl1_alloc_rx_buffers(struct atl1_adapter
*adapter
)
410 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
411 struct pci_dev
*pdev
= adapter
->pdev
;
413 unsigned long offset
;
414 struct atl1_buffer
*buffer_info
, *next_info
;
417 u16 rfd_next_to_use
, next_next
;
418 struct rx_free_desc
*rfd_desc
;
420 next_next
= rfd_next_to_use
= atomic_read(&rfd_ring
->next_to_use
);
421 if (++next_next
== rfd_ring
->count
)
423 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
424 next_info
= &rfd_ring
->buffer_info
[next_next
];
426 while (!buffer_info
->alloced
&& !next_info
->alloced
) {
427 if (buffer_info
->skb
) {
428 buffer_info
->alloced
= 1;
432 rfd_desc
= ATL1_RFD_DESC(rfd_ring
, rfd_next_to_use
);
434 skb
= dev_alloc_skb(adapter
->rx_buffer_len
+ NET_IP_ALIGN
);
435 if (unlikely(!skb
)) { /* Better luck next round */
436 adapter
->net_stats
.rx_dropped
++;
441 * Make buffer alignment 2 beyond a 16 byte boundary
442 * this will result in a 16 byte aligned IP header after
443 * the 14 byte MAC header is removed
445 skb_reserve(skb
, NET_IP_ALIGN
);
447 buffer_info
->alloced
= 1;
448 buffer_info
->skb
= skb
;
449 buffer_info
->length
= (u16
) adapter
->rx_buffer_len
;
450 page
= virt_to_page(skb
->data
);
451 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
452 buffer_info
->dma
= pci_map_page(pdev
, page
, offset
,
453 adapter
->rx_buffer_len
,
455 rfd_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
456 rfd_desc
->buf_len
= cpu_to_le16(adapter
->rx_buffer_len
);
457 rfd_desc
->coalese
= 0;
460 rfd_next_to_use
= next_next
;
461 if (unlikely(++next_next
== rfd_ring
->count
))
464 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
465 next_info
= &rfd_ring
->buffer_info
[next_next
];
471 * Force memory writes to complete before letting h/w
472 * know there are new descriptors to fetch. (Only
473 * applicable for weak-ordered memory model archs,
477 atomic_set(&rfd_ring
->next_to_use
, (int)rfd_next_to_use
);
482 static void atl1_intr_rx(struct atl1_adapter
*adapter
)
486 u16 rrd_next_to_clean
;
488 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
489 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
490 struct atl1_buffer
*buffer_info
;
491 struct rx_return_desc
*rrd
;
496 rrd_next_to_clean
= atomic_read(&rrd_ring
->next_to_clean
);
499 rrd
= ATL1_RRD_DESC(rrd_ring
, rrd_next_to_clean
);
501 if (likely(rrd
->xsz
.valid
)) { /* packet valid */
503 /* check rrd status */
504 if (likely(rrd
->num_buf
== 1))
507 /* rrd seems to be bad */
508 if (unlikely(i
-- > 0)) {
509 /* rrd may not be DMAed completely */
511 "%s: RRD may not be DMAed completely\n",
517 printk(KERN_DEBUG
"%s: bad RRD\n", atl1_driver_name
);
518 /* see if update RFD index */
519 if (rrd
->num_buf
> 1) {
522 (rrd
->xsz
.xsum_sz
.pkt_size
+
523 adapter
->rx_buffer_len
-
524 1) / adapter
->rx_buffer_len
;
525 if (rrd
->num_buf
== num_buf
) {
526 /* clean alloc flag for bad rrd */
527 while (rfd_ring
->next_to_clean
!=
528 (rrd
->buf_indx
+ num_buf
)) {
529 rfd_ring
->buffer_info
[rfd_ring
->
530 next_to_clean
].alloced
= 0;
531 if (++rfd_ring
->next_to_clean
==
542 if (++rrd_next_to_clean
== rrd_ring
->count
)
543 rrd_next_to_clean
= 0;
546 } else { /* current rrd still not be updated */
551 /* clean alloc flag for bad rrd */
552 while (rfd_ring
->next_to_clean
!= rrd
->buf_indx
) {
553 rfd_ring
->buffer_info
[rfd_ring
->next_to_clean
].alloced
=
555 if (++rfd_ring
->next_to_clean
== rfd_ring
->count
)
556 rfd_ring
->next_to_clean
= 0;
559 buffer_info
= &rfd_ring
->buffer_info
[rrd
->buf_indx
];
560 if (++rfd_ring
->next_to_clean
== rfd_ring
->count
)
561 rfd_ring
->next_to_clean
= 0;
563 /* update rrd next to clean */
564 if (++rrd_next_to_clean
== rrd_ring
->count
)
565 rrd_next_to_clean
= 0;
568 if (unlikely(rrd
->pkt_flg
& PACKET_FLAG_ERR
)) {
570 (ERR_FLAG_IP_CHKSUM
| ERR_FLAG_L4_CHKSUM
572 /* packet error, don't need upstream */
573 buffer_info
->alloced
= 0;
580 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
581 buffer_info
->length
, PCI_DMA_FROMDEVICE
);
582 skb
= buffer_info
->skb
;
583 length
= le16_to_cpu(rrd
->xsz
.xsum_sz
.pkt_size
);
585 skb_put(skb
, length
- ETHERNET_FCS_SIZE
);
587 /* Receive Checksum Offload */
588 atl1_rx_checksum(adapter
, rrd
, skb
);
589 skb
->protocol
= eth_type_trans(skb
, adapter
->netdev
);
591 if (adapter
->vlgrp
&& (rrd
->pkt_flg
& PACKET_FLAG_VLAN_INS
)) {
592 u16 vlan_tag
= (rrd
->vlan_tag
>> 4) |
593 ((rrd
->vlan_tag
& 7) << 13) |
594 ((rrd
->vlan_tag
& 8) << 9);
595 vlan_hwaccel_rx(skb
, adapter
->vlgrp
, vlan_tag
);
599 /* let protocol layer free skb */
600 buffer_info
->skb
= NULL
;
601 buffer_info
->alloced
= 0;
604 adapter
->netdev
->last_rx
= jiffies
;
607 atomic_set(&rrd_ring
->next_to_clean
, rrd_next_to_clean
);
609 atl1_alloc_rx_buffers(adapter
);
611 /* update mailbox ? */
615 u32 rrd_next_to_clean
;
617 spin_lock(&adapter
->mb_lock
);
619 tpd_next_to_use
= atomic_read(&adapter
->tpd_ring
.next_to_use
);
621 atomic_read(&adapter
->rfd_ring
.next_to_use
);
623 atomic_read(&adapter
->rrd_ring
.next_to_clean
);
624 value
= ((rfd_next_to_use
& MB_RFD_PROD_INDX_MASK
) <<
625 MB_RFD_PROD_INDX_SHIFT
) |
626 ((rrd_next_to_clean
& MB_RRD_CONS_INDX_MASK
) <<
627 MB_RRD_CONS_INDX_SHIFT
) |
628 ((tpd_next_to_use
& MB_TPD_PROD_INDX_MASK
) <<
629 MB_TPD_PROD_INDX_SHIFT
);
630 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_MAILBOX
);
631 spin_unlock(&adapter
->mb_lock
);
635 static void atl1_intr_tx(struct atl1_adapter
*adapter
)
637 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
638 struct atl1_buffer
*buffer_info
;
639 u16 sw_tpd_next_to_clean
;
640 u16 cmb_tpd_next_to_clean
;
643 sw_tpd_next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
644 cmb_tpd_next_to_clean
= le16_to_cpu(adapter
->cmb
.cmb
->tpd_cons_idx
);
646 while (cmb_tpd_next_to_clean
!= sw_tpd_next_to_clean
) {
647 struct tx_packet_desc
*tpd
;
649 tpd
= ATL1_TPD_DESC(tpd_ring
, sw_tpd_next_to_clean
);
650 buffer_info
= &tpd_ring
->buffer_info
[sw_tpd_next_to_clean
];
651 if (buffer_info
->dma
) {
652 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
653 buffer_info
->length
, PCI_DMA_TODEVICE
);
654 buffer_info
->dma
= 0;
657 if (buffer_info
->skb
) {
658 dev_kfree_skb_irq(buffer_info
->skb
);
659 buffer_info
->skb
= NULL
;
661 tpd
->buffer_addr
= 0;
664 if (++sw_tpd_next_to_clean
== tpd_ring
->count
)
665 sw_tpd_next_to_clean
= 0;
667 atomic_set(&tpd_ring
->next_to_clean
, sw_tpd_next_to_clean
);
669 if (netif_queue_stopped(adapter
->netdev
)
670 && netif_carrier_ok(adapter
->netdev
))
671 netif_wake_queue(adapter
->netdev
);
674 static void atl1_check_for_link(struct atl1_adapter
*adapter
)
676 struct net_device
*netdev
= adapter
->netdev
;
679 spin_lock(&adapter
->lock
);
680 adapter
->phy_timer_pending
= false;
681 atl1_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
682 atl1_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
683 spin_unlock(&adapter
->lock
);
685 /* notify upper layer link down ASAP */
686 if (!(phy_data
& BMSR_LSTATUS
)) { /* Link Down */
687 if (netif_carrier_ok(netdev
)) { /* old link state: Up */
688 printk(KERN_INFO
"%s: %s link is down\n",
689 atl1_driver_name
, netdev
->name
);
690 adapter
->link_speed
= SPEED_0
;
691 netif_carrier_off(netdev
);
692 netif_stop_queue(netdev
);
695 schedule_work(&adapter
->link_chg_task
);
699 * atl1_intr - Interrupt Handler
700 * @irq: interrupt number
701 * @data: pointer to a network interface device structure
702 * @pt_regs: CPU registers structure
704 static irqreturn_t
atl1_intr(int irq
, void *data
)
706 /*struct atl1_adapter *adapter = ((struct net_device *)data)->priv;*/
707 struct atl1_adapter
*adapter
= netdev_priv(data
);
712 status
= adapter
->cmb
.cmb
->int_stats
;
719 /* clear CMB interrupt status at once */
720 adapter
->cmb
.cmb
->int_stats
= 0;
722 if (status
& ISR_GPHY
) /* clear phy status */
723 atl1_clear_phy_int(adapter
);
725 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
726 iowrite32(status
| ISR_DIS_INT
, adapter
->hw
.hw_addr
+ REG_ISR
);
728 /* check if SMB intr */
729 if (status
& ISR_SMB
)
730 atl1_inc_smb(adapter
);
732 /* check if PCIE PHY Link down */
733 if (status
& ISR_PHY_LINKDOWN
) {
734 printk(KERN_DEBUG
"%s: pcie phy link down %x\n",
735 atl1_driver_name
, status
);
736 if (netif_running(adapter
->netdev
)) { /* reset MAC */
737 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
738 schedule_work(&adapter
->pcie_dma_to_rst_task
);
743 /* check if DMA read/write error ? */
744 if (status
& (ISR_DMAR_TO_RST
| ISR_DMAW_TO_RST
)) {
746 "%s: pcie DMA r/w error (status = 0x%x)\n",
747 atl1_driver_name
, status
);
748 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
749 schedule_work(&adapter
->pcie_dma_to_rst_task
);
754 if (status
& ISR_GPHY
) {
755 adapter
->soft_stats
.tx_carrier_errors
++;
756 atl1_check_for_link(adapter
);
760 if (status
& ISR_CMB_TX
)
761 atl1_intr_tx(adapter
);
764 if (unlikely(status
& (ISR_RXF_OV
| ISR_RFD_UNRUN
|
765 ISR_RRD_OV
| ISR_HOST_RFD_UNRUN
|
766 ISR_HOST_RRD_OV
| ISR_CMB_RX
))) {
768 (ISR_RXF_OV
| ISR_RFD_UNRUN
| ISR_RRD_OV
|
769 ISR_HOST_RFD_UNRUN
| ISR_HOST_RRD_OV
))
771 "%s: rx exception: status = 0x%x\n",
772 atl1_driver_name
, status
);
773 atl1_intr_rx(adapter
);
779 } while ((status
= adapter
->cmb
.cmb
->int_stats
));
781 /* re-enable Interrupt */
782 iowrite32(ISR_DIS_SMB
| ISR_DIS_DMA
, adapter
->hw
.hw_addr
+ REG_ISR
);
787 * atl1_set_multi - Multicast and Promiscuous mode set
788 * @netdev: network interface device structure
790 * The set_multi entry point is called whenever the multicast address
791 * list or the network interface flags are updated. This routine is
792 * responsible for configuring the hardware for proper multicast,
793 * promiscuous mode, and all-multi behavior.
795 static void atl1_set_multi(struct net_device
*netdev
)
797 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
798 struct atl1_hw
*hw
= &adapter
->hw
;
799 struct dev_mc_list
*mc_ptr
;
803 /* Check for Promiscuous and All Multicast modes */
804 rctl
= ioread32(hw
->hw_addr
+ REG_MAC_CTRL
);
805 if (netdev
->flags
& IFF_PROMISC
)
806 rctl
|= MAC_CTRL_PROMIS_EN
;
807 else if (netdev
->flags
& IFF_ALLMULTI
) {
808 rctl
|= MAC_CTRL_MC_ALL_EN
;
809 rctl
&= ~MAC_CTRL_PROMIS_EN
;
811 rctl
&= ~(MAC_CTRL_PROMIS_EN
| MAC_CTRL_MC_ALL_EN
);
813 iowrite32(rctl
, hw
->hw_addr
+ REG_MAC_CTRL
);
815 /* clear the old settings from the multicast hash table */
816 iowrite32(0, hw
->hw_addr
+ REG_RX_HASH_TABLE
);
817 iowrite32(0, (hw
->hw_addr
+ REG_RX_HASH_TABLE
) + (1 << 2));
819 /* compute mc addresses' hash value ,and put it into hash table */
820 for (mc_ptr
= netdev
->mc_list
; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
821 hash_value
= atl1_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
822 atl1_hash_set(hw
, hash_value
);
826 static void atl1_setup_mac_ctrl(struct atl1_adapter
*adapter
)
829 struct atl1_hw
*hw
= &adapter
->hw
;
830 struct net_device
*netdev
= adapter
->netdev
;
831 /* Config MAC CTRL Register */
832 value
= MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
;
834 if (FULL_DUPLEX
== adapter
->link_duplex
)
835 value
|= MAC_CTRL_DUPLX
;
837 value
|= ((u32
) ((SPEED_1000
== adapter
->link_speed
) ?
838 MAC_CTRL_SPEED_1000
: MAC_CTRL_SPEED_10_100
) <<
839 MAC_CTRL_SPEED_SHIFT
);
841 value
|= (MAC_CTRL_TX_FLOW
| MAC_CTRL_RX_FLOW
);
843 value
|= (MAC_CTRL_ADD_CRC
| MAC_CTRL_PAD
);
844 /* preamble length */
845 value
|= (((u32
) adapter
->hw
.preamble_len
846 & MAC_CTRL_PRMLEN_MASK
) << MAC_CTRL_PRMLEN_SHIFT
);
849 value
|= MAC_CTRL_RMV_VLAN
;
851 if (adapter->rx_csum)
852 value |= MAC_CTRL_RX_CHKSUM_EN;
855 value
|= MAC_CTRL_BC_EN
;
856 if (netdev
->flags
& IFF_PROMISC
)
857 value
|= MAC_CTRL_PROMIS_EN
;
858 else if (netdev
->flags
& IFF_ALLMULTI
)
859 value
|= MAC_CTRL_MC_ALL_EN
;
860 /* value |= MAC_CTRL_LOOPBACK; */
861 iowrite32(value
, hw
->hw_addr
+ REG_MAC_CTRL
);
864 static u32
atl1_check_link(struct atl1_adapter
*adapter
)
866 struct atl1_hw
*hw
= &adapter
->hw
;
867 struct net_device
*netdev
= adapter
->netdev
;
869 u16 speed
, duplex
, phy_data
;
872 /* MII_BMSR must read twice */
873 atl1_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
874 atl1_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
875 if (!(phy_data
& BMSR_LSTATUS
)) { /* link down */
876 if (netif_carrier_ok(netdev
)) { /* old link state: Up */
877 printk(KERN_INFO
"%s: link is down\n",
879 adapter
->link_speed
= SPEED_0
;
880 netif_carrier_off(netdev
);
881 netif_stop_queue(netdev
);
887 ret_val
= atl1_get_speed_and_duplex(hw
, &speed
, &duplex
);
891 switch (hw
->media_type
) {
892 case MEDIA_TYPE_1000M_FULL
:
893 if (speed
!= SPEED_1000
|| duplex
!= FULL_DUPLEX
)
896 case MEDIA_TYPE_100M_FULL
:
897 if (speed
!= SPEED_100
|| duplex
!= FULL_DUPLEX
)
900 case MEDIA_TYPE_100M_HALF
:
901 if (speed
!= SPEED_100
|| duplex
!= HALF_DUPLEX
)
904 case MEDIA_TYPE_10M_FULL
:
905 if (speed
!= SPEED_10
|| duplex
!= FULL_DUPLEX
)
908 case MEDIA_TYPE_10M_HALF
:
909 if (speed
!= SPEED_10
|| duplex
!= HALF_DUPLEX
)
914 /* link result is our setting */
916 if (adapter
->link_speed
!= speed
917 || adapter
->link_duplex
!= duplex
) {
918 adapter
->link_speed
= speed
;
919 adapter
->link_duplex
= duplex
;
920 atl1_setup_mac_ctrl(adapter
);
921 printk(KERN_INFO
"%s: %s link is up %d Mbps %s\n",
922 atl1_driver_name
, netdev
->name
,
924 adapter
->link_duplex
==
925 FULL_DUPLEX
? "full duplex" : "half duplex");
927 if (!netif_carrier_ok(netdev
)) { /* Link down -> Up */
928 netif_carrier_on(netdev
);
929 netif_wake_queue(netdev
);
934 /* change orignal link status */
935 if (netif_carrier_ok(netdev
)) {
936 adapter
->link_speed
= SPEED_0
;
937 netif_carrier_off(netdev
);
938 netif_stop_queue(netdev
);
941 if (hw
->media_type
!= MEDIA_TYPE_AUTO_SENSOR
&&
942 hw
->media_type
!= MEDIA_TYPE_1000M_FULL
) {
943 switch (hw
->media_type
) {
944 case MEDIA_TYPE_100M_FULL
:
945 phy_data
= MII_CR_FULL_DUPLEX
| MII_CR_SPEED_100
|
948 case MEDIA_TYPE_100M_HALF
:
949 phy_data
= MII_CR_SPEED_100
| MII_CR_RESET
;
951 case MEDIA_TYPE_10M_FULL
:
953 MII_CR_FULL_DUPLEX
| MII_CR_SPEED_10
| MII_CR_RESET
;
955 default: /* MEDIA_TYPE_10M_HALF: */
956 phy_data
= MII_CR_SPEED_10
| MII_CR_RESET
;
959 atl1_write_phy_reg(hw
, MII_BMCR
, phy_data
);
963 /* auto-neg, insert timer to re-config phy */
964 if (!adapter
->phy_timer_pending
) {
965 adapter
->phy_timer_pending
= true;
966 mod_timer(&adapter
->phy_config_timer
, jiffies
+ 3 * HZ
);
972 static void set_flow_ctrl_old(struct atl1_adapter
*adapter
)
976 /* RFD Flow Control */
977 value
= adapter
->rfd_ring
.count
;
983 value
= ((hi
& RXQ_RXF_PAUSE_TH_HI_MASK
) << RXQ_RXF_PAUSE_TH_HI_SHIFT
) |
984 ((lo
& RXQ_RXF_PAUSE_TH_LO_MASK
) << RXQ_RXF_PAUSE_TH_LO_SHIFT
);
985 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_RXQ_RXF_PAUSE_THRESH
);
987 /* RRD Flow Control */
988 value
= adapter
->rrd_ring
.count
;
993 value
= ((hi
& RXQ_RRD_PAUSE_TH_HI_MASK
) << RXQ_RRD_PAUSE_TH_HI_SHIFT
) |
994 ((lo
& RXQ_RRD_PAUSE_TH_LO_MASK
) << RXQ_RRD_PAUSE_TH_LO_SHIFT
);
995 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_RXQ_RRD_PAUSE_THRESH
);
998 static void set_flow_ctrl_new(struct atl1_hw
*hw
)
1002 /* RXF Flow Control */
1003 value
= ioread32(hw
->hw_addr
+ REG_SRAM_RXF_LEN
);
1010 value
= ((hi
& RXQ_RXF_PAUSE_TH_HI_MASK
) << RXQ_RXF_PAUSE_TH_HI_SHIFT
) |
1011 ((lo
& RXQ_RXF_PAUSE_TH_LO_MASK
) << RXQ_RXF_PAUSE_TH_LO_SHIFT
);
1012 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_RXF_PAUSE_THRESH
);
1014 /* RRD Flow Control */
1015 value
= ioread32(hw
->hw_addr
+ REG_SRAM_RRD_LEN
);
1022 value
= ((hi
& RXQ_RRD_PAUSE_TH_HI_MASK
) << RXQ_RRD_PAUSE_TH_HI_SHIFT
) |
1023 ((lo
& RXQ_RRD_PAUSE_TH_LO_MASK
) << RXQ_RRD_PAUSE_TH_LO_SHIFT
);
1024 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_RRD_PAUSE_THRESH
);
1028 * atl1_configure - Configure Transmit&Receive Unit after Reset
1029 * @adapter: board private structure
1031 * Configure the Tx /Rx unit of the MAC after a reset.
1033 static u32
atl1_configure(struct atl1_adapter
*adapter
)
1035 struct atl1_hw
*hw
= &adapter
->hw
;
1038 /* clear interrupt status */
1039 iowrite32(0xffffffff, adapter
->hw
.hw_addr
+ REG_ISR
);
1041 /* set MAC Address */
1042 value
= (((u32
) hw
->mac_addr
[2]) << 24) |
1043 (((u32
) hw
->mac_addr
[3]) << 16) |
1044 (((u32
) hw
->mac_addr
[4]) << 8) |
1045 (((u32
) hw
->mac_addr
[5]));
1046 iowrite32(value
, hw
->hw_addr
+ REG_MAC_STA_ADDR
);
1047 value
= (((u32
) hw
->mac_addr
[0]) << 8) | (((u32
) hw
->mac_addr
[1]));
1048 iowrite32(value
, hw
->hw_addr
+ (REG_MAC_STA_ADDR
+ 4));
1052 /* HI base address */
1053 iowrite32((u32
) ((adapter
->tpd_ring
.dma
& 0xffffffff00000000ULL
) >> 32),
1054 hw
->hw_addr
+ REG_DESC_BASE_ADDR_HI
);
1055 /* LO base address */
1056 iowrite32((u32
) (adapter
->rfd_ring
.dma
& 0x00000000ffffffffULL
),
1057 hw
->hw_addr
+ REG_DESC_RFD_ADDR_LO
);
1058 iowrite32((u32
) (adapter
->rrd_ring
.dma
& 0x00000000ffffffffULL
),
1059 hw
->hw_addr
+ REG_DESC_RRD_ADDR_LO
);
1060 iowrite32((u32
) (adapter
->tpd_ring
.dma
& 0x00000000ffffffffULL
),
1061 hw
->hw_addr
+ REG_DESC_TPD_ADDR_LO
);
1062 iowrite32((u32
) (adapter
->cmb
.dma
& 0x00000000ffffffffULL
),
1063 hw
->hw_addr
+ REG_DESC_CMB_ADDR_LO
);
1064 iowrite32((u32
) (adapter
->smb
.dma
& 0x00000000ffffffffULL
),
1065 hw
->hw_addr
+ REG_DESC_SMB_ADDR_LO
);
1068 value
= adapter
->rrd_ring
.count
;
1070 value
+= adapter
->rfd_ring
.count
;
1071 iowrite32(value
, hw
->hw_addr
+ REG_DESC_RFD_RRD_RING_SIZE
);
1072 iowrite32(adapter
->tpd_ring
.count
, hw
->hw_addr
+ REG_DESC_TPD_RING_SIZE
);
1075 iowrite32(1, hw
->hw_addr
+ REG_LOAD_PTR
);
1077 /* config Mailbox */
1078 value
= ((atomic_read(&adapter
->tpd_ring
.next_to_use
)
1079 & MB_TPD_PROD_INDX_MASK
) << MB_TPD_PROD_INDX_SHIFT
) |
1080 ((atomic_read(&adapter
->rrd_ring
.next_to_clean
)
1081 & MB_RRD_CONS_INDX_MASK
) << MB_RRD_CONS_INDX_SHIFT
) |
1082 ((atomic_read(&adapter
->rfd_ring
.next_to_use
)
1083 & MB_RFD_PROD_INDX_MASK
) << MB_RFD_PROD_INDX_SHIFT
);
1084 iowrite32(value
, hw
->hw_addr
+ REG_MAILBOX
);
1086 /* config IPG/IFG */
1087 value
= (((u32
) hw
->ipgt
& MAC_IPG_IFG_IPGT_MASK
)
1088 << MAC_IPG_IFG_IPGT_SHIFT
) |
1089 (((u32
) hw
->min_ifg
& MAC_IPG_IFG_MIFG_MASK
)
1090 << MAC_IPG_IFG_MIFG_SHIFT
) |
1091 (((u32
) hw
->ipgr1
& MAC_IPG_IFG_IPGR1_MASK
)
1092 << MAC_IPG_IFG_IPGR1_SHIFT
) |
1093 (((u32
) hw
->ipgr2
& MAC_IPG_IFG_IPGR2_MASK
)
1094 << MAC_IPG_IFG_IPGR2_SHIFT
);
1095 iowrite32(value
, hw
->hw_addr
+ REG_MAC_IPG_IFG
);
1097 /* config Half-Duplex Control */
1098 value
= ((u32
) hw
->lcol
& MAC_HALF_DUPLX_CTRL_LCOL_MASK
) |
1099 (((u32
) hw
->max_retry
& MAC_HALF_DUPLX_CTRL_RETRY_MASK
)
1100 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT
) |
1101 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN
|
1102 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT
) |
1103 (((u32
) hw
->jam_ipg
& MAC_HALF_DUPLX_CTRL_JAMIPG_MASK
)
1104 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT
);
1105 iowrite32(value
, hw
->hw_addr
+ REG_MAC_HALF_DUPLX_CTRL
);
1107 /* set Interrupt Moderator Timer */
1108 iowrite16(adapter
->imt
, hw
->hw_addr
+ REG_IRQ_MODU_TIMER_INIT
);
1109 iowrite32(MASTER_CTRL_ITIMER_EN
, hw
->hw_addr
+ REG_MASTER_CTRL
);
1111 /* set Interrupt Clear Timer */
1112 iowrite16(adapter
->ict
, hw
->hw_addr
+ REG_CMBDISDMA_TIMER
);
1114 /* set MTU, 4 : VLAN */
1115 iowrite32(hw
->max_frame_size
+ 4, hw
->hw_addr
+ REG_MTU
);
1117 /* jumbo size & rrd retirement timer */
1118 value
= (((u32
) hw
->rx_jumbo_th
& RXQ_JMBOSZ_TH_MASK
)
1119 << RXQ_JMBOSZ_TH_SHIFT
) |
1120 (((u32
) hw
->rx_jumbo_lkah
& RXQ_JMBO_LKAH_MASK
)
1121 << RXQ_JMBO_LKAH_SHIFT
) |
1122 (((u32
) hw
->rrd_ret_timer
& RXQ_RRD_TIMER_MASK
)
1123 << RXQ_RRD_TIMER_SHIFT
);
1124 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_JMBOSZ_RRDTIM
);
1127 switch (hw
->dev_rev
) {
1132 set_flow_ctrl_old(adapter
);
1135 set_flow_ctrl_new(hw
);
1140 value
= (((u32
) hw
->tpd_burst
& TXQ_CTRL_TPD_BURST_NUM_MASK
)
1141 << TXQ_CTRL_TPD_BURST_NUM_SHIFT
) |
1142 (((u32
) hw
->txf_burst
& TXQ_CTRL_TXF_BURST_NUM_MASK
)
1143 << TXQ_CTRL_TXF_BURST_NUM_SHIFT
) |
1144 (((u32
) hw
->tpd_fetch_th
& TXQ_CTRL_TPD_FETCH_TH_MASK
)
1145 << TXQ_CTRL_TPD_FETCH_TH_SHIFT
) | TXQ_CTRL_ENH_MODE
| TXQ_CTRL_EN
;
1146 iowrite32(value
, hw
->hw_addr
+ REG_TXQ_CTRL
);
1148 /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
1149 value
= (((u32
) hw
->tx_jumbo_task_th
& TX_JUMBO_TASK_TH_MASK
)
1150 << TX_JUMBO_TASK_TH_SHIFT
) |
1151 (((u32
) hw
->tpd_fetch_gap
& TX_TPD_MIN_IPG_MASK
)
1152 << TX_TPD_MIN_IPG_SHIFT
);
1153 iowrite32(value
, hw
->hw_addr
+ REG_TX_JUMBO_TASK_TH_TPD_IPG
);
1156 value
= (((u32
) hw
->rfd_burst
& RXQ_CTRL_RFD_BURST_NUM_MASK
)
1157 << RXQ_CTRL_RFD_BURST_NUM_SHIFT
) |
1158 (((u32
) hw
->rrd_burst
& RXQ_CTRL_RRD_BURST_THRESH_MASK
)
1159 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT
) |
1160 (((u32
) hw
->rfd_fetch_gap
& RXQ_CTRL_RFD_PREF_MIN_IPG_MASK
)
1161 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT
) |
1162 RXQ_CTRL_CUT_THRU_EN
| RXQ_CTRL_EN
;
1163 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_CTRL
);
1165 /* config DMA Engine */
1166 value
= ((((u32
) hw
->dmar_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
1167 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
) |
1168 ((((u32
) hw
->dmaw_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
1169 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
) |
1170 DMA_CTRL_DMAR_EN
| DMA_CTRL_DMAW_EN
;
1171 value
|= (u32
) hw
->dma_ord
;
1172 if (atl1_rcb_128
== hw
->rcb_value
)
1173 value
|= DMA_CTRL_RCB_VALUE
;
1174 iowrite32(value
, hw
->hw_addr
+ REG_DMA_CTRL
);
1176 /* config CMB / SMB */
1177 value
= hw
->cmb_rrd
| ((u32
) hw
->cmb_tpd
<< 16);
1178 iowrite32(value
, hw
->hw_addr
+ REG_CMB_WRITE_TH
);
1179 value
= hw
->cmb_rx_timer
| ((u32
) hw
->cmb_tx_timer
<< 16);
1180 iowrite32(value
, hw
->hw_addr
+ REG_CMB_WRITE_TIMER
);
1181 iowrite32(hw
->smb_timer
, hw
->hw_addr
+ REG_SMB_TIMER
);
1183 /* --- enable CMB / SMB */
1184 value
= CSMB_CTRL_CMB_EN
| CSMB_CTRL_SMB_EN
;
1185 iowrite32(value
, hw
->hw_addr
+ REG_CSMB_CTRL
);
1187 value
= ioread32(adapter
->hw
.hw_addr
+ REG_ISR
);
1188 if (unlikely((value
& ISR_PHY_LINKDOWN
) != 0))
1189 value
= 1; /* config failed */
1193 /* clear all interrupt status */
1194 iowrite32(0x3fffffff, adapter
->hw
.hw_addr
+ REG_ISR
);
1195 iowrite32(0, adapter
->hw
.hw_addr
+ REG_ISR
);
1200 * atl1_irq_disable - Mask off interrupt generation on the NIC
1201 * @adapter: board private structure
1203 static void atl1_irq_disable(struct atl1_adapter
*adapter
)
1205 atomic_inc(&adapter
->irq_sem
);
1206 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
1207 ioread32(adapter
->hw
.hw_addr
+ REG_IMR
);
1208 synchronize_irq(adapter
->pdev
->irq
);
1211 static void atl1_vlan_rx_register(struct net_device
*netdev
,
1212 struct vlan_group
*grp
)
1214 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1215 unsigned long flags
;
1218 spin_lock_irqsave(&adapter
->lock
, flags
);
1219 /* atl1_irq_disable(adapter); */
1220 adapter
->vlgrp
= grp
;
1223 /* enable VLAN tag insert/strip */
1224 ctrl
= ioread32(adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1225 ctrl
|= MAC_CTRL_RMV_VLAN
;
1226 iowrite32(ctrl
, adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1228 /* disable VLAN tag insert/strip */
1229 ctrl
= ioread32(adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1230 ctrl
&= ~MAC_CTRL_RMV_VLAN
;
1231 iowrite32(ctrl
, adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1234 /* atl1_irq_enable(adapter); */
1235 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1238 /* FIXME: justify or remove -- CHS */
1239 static void atl1_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
1241 /* We don't do Vlan filtering */
1245 /* FIXME: this looks wrong too -- CHS */
1246 static void atl1_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
1248 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1249 unsigned long flags
;
1251 spin_lock_irqsave(&adapter
->lock
, flags
);
1252 /* atl1_irq_disable(adapter); */
1253 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
1254 /* atl1_irq_enable(adapter); */
1255 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1256 /* We don't do Vlan filtering */
1260 static void atl1_restore_vlan(struct atl1_adapter
*adapter
)
1262 atl1_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
1263 if (adapter
->vlgrp
) {
1265 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
1266 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
1268 atl1_vlan_rx_add_vid(adapter
->netdev
, vid
);
1273 static u16
tpd_avail(struct atl1_tpd_ring
*tpd_ring
)
1275 u16 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1276 u16 next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1277 return ((next_to_clean
>
1278 next_to_use
) ? next_to_clean
- next_to_use
-
1279 1 : tpd_ring
->count
+ next_to_clean
- next_to_use
- 1);
1282 static int atl1_tso(struct atl1_adapter
*adapter
, struct sk_buff
*skb
,
1283 struct tso_param
*tso
)
1285 /* We enter this function holding a spinlock. */
1289 if (skb_shinfo(skb
)->gso_size
) {
1290 if (skb_header_cloned(skb
)) {
1291 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
1296 if (skb
->protocol
== ntohs(ETH_P_IP
)) {
1297 struct iphdr
*iph
= ip_hdr(skb
);
1301 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
1305 ipofst
= skb_network_offset(skb
);
1306 if (ipofst
!= ENET_HEADER_SIZE
) /* 802.3 frame */
1307 tso
->tsopl
|= 1 << TSO_PARAM_ETHTYPE_SHIFT
;
1309 tso
->tsopl
|= (iph
->ihl
&
1310 CSUM_PARAM_IPHL_MASK
) << CSUM_PARAM_IPHL_SHIFT
;
1311 tso
->tsopl
|= (tcp_hdrlen(skb
) &
1312 TSO_PARAM_TCPHDRLEN_MASK
) << TSO_PARAM_TCPHDRLEN_SHIFT
;
1313 tso
->tsopl
|= (skb_shinfo(skb
)->gso_size
&
1314 TSO_PARAM_MSS_MASK
) << TSO_PARAM_MSS_SHIFT
;
1315 tso
->tsopl
|= 1 << TSO_PARAM_IPCKSUM_SHIFT
;
1316 tso
->tsopl
|= 1 << TSO_PARAM_TCPCKSUM_SHIFT
;
1317 tso
->tsopl
|= 1 << TSO_PARAM_SEGMENT_SHIFT
;
1324 static int atl1_tx_csum(struct atl1_adapter
*adapter
, struct sk_buff
*skb
,
1325 struct csum_param
*csum
)
1329 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
1330 cso
= skb_transport_offset(skb
);
1331 css
= cso
+ skb
->csum_offset
;
1332 if (unlikely(cso
& 0x1)) {
1333 printk(KERN_DEBUG
"%s: payload offset != even number\n",
1337 csum
->csumpl
|= (cso
& CSUM_PARAM_PLOADOFFSET_MASK
) <<
1338 CSUM_PARAM_PLOADOFFSET_SHIFT
;
1339 csum
->csumpl
|= (css
& CSUM_PARAM_XSUMOFFSET_MASK
) <<
1340 CSUM_PARAM_XSUMOFFSET_SHIFT
;
1341 csum
->csumpl
|= 1 << CSUM_PARAM_CUSTOMCKSUM_SHIFT
;
1348 static void atl1_tx_map(struct atl1_adapter
*adapter
,
1349 struct sk_buff
*skb
, bool tcp_seg
)
1351 /* We enter this function holding a spinlock. */
1352 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1353 struct atl1_buffer
*buffer_info
;
1355 int first_buf_len
= skb
->len
;
1356 unsigned long offset
;
1357 unsigned int nr_frags
;
1359 u16 tpd_next_to_use
;
1363 first_buf_len
-= skb
->data_len
;
1364 nr_frags
= skb_shinfo(skb
)->nr_frags
;
1365 tpd_next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1366 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1367 if (unlikely(buffer_info
->skb
))
1369 buffer_info
->skb
= NULL
; /* put skb in last TPD */
1373 proto_hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1374 buffer_info
->length
= proto_hdr_len
;
1375 page
= virt_to_page(skb
->data
);
1376 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
1377 buffer_info
->dma
= pci_map_page(adapter
->pdev
, page
,
1378 offset
, proto_hdr_len
,
1381 if (++tpd_next_to_use
== tpd_ring
->count
)
1382 tpd_next_to_use
= 0;
1384 if (first_buf_len
> proto_hdr_len
) {
1385 len12
= first_buf_len
- proto_hdr_len
;
1386 m
= (len12
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1387 for (i
= 0; i
< m
; i
++) {
1389 &tpd_ring
->buffer_info
[tpd_next_to_use
];
1390 buffer_info
->skb
= NULL
;
1391 buffer_info
->length
=
1393 len12
) ? MAX_TX_BUF_LEN
: len12
;
1394 len12
-= buffer_info
->length
;
1395 page
= virt_to_page(skb
->data
+
1397 i
* MAX_TX_BUF_LEN
));
1398 offset
= (unsigned long)(skb
->data
+
1400 i
* MAX_TX_BUF_LEN
)) &
1403 pci_map_page(adapter
->pdev
, page
, offset
,
1404 buffer_info
->length
,
1406 if (++tpd_next_to_use
== tpd_ring
->count
)
1407 tpd_next_to_use
= 0;
1412 buffer_info
->length
= first_buf_len
;
1413 page
= virt_to_page(skb
->data
);
1414 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
1415 buffer_info
->dma
= pci_map_page(adapter
->pdev
, page
,
1416 offset
, first_buf_len
,
1418 if (++tpd_next_to_use
== tpd_ring
->count
)
1419 tpd_next_to_use
= 0;
1422 for (f
= 0; f
< nr_frags
; f
++) {
1423 struct skb_frag_struct
*frag
;
1426 frag
= &skb_shinfo(skb
)->frags
[f
];
1429 m
= (lenf
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1430 for (i
= 0; i
< m
; i
++) {
1431 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1432 if (unlikely(buffer_info
->skb
))
1434 buffer_info
->skb
= NULL
;
1435 buffer_info
->length
=
1436 (lenf
> MAX_TX_BUF_LEN
) ? MAX_TX_BUF_LEN
: lenf
;
1437 lenf
-= buffer_info
->length
;
1439 pci_map_page(adapter
->pdev
, frag
->page
,
1440 frag
->page_offset
+ i
* MAX_TX_BUF_LEN
,
1441 buffer_info
->length
, PCI_DMA_TODEVICE
);
1443 if (++tpd_next_to_use
== tpd_ring
->count
)
1444 tpd_next_to_use
= 0;
1448 /* last tpd's buffer-info */
1449 buffer_info
->skb
= skb
;
1452 static void atl1_tx_queue(struct atl1_adapter
*adapter
, int count
,
1453 union tpd_descr
*descr
)
1455 /* We enter this function holding a spinlock. */
1456 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1459 struct atl1_buffer
*buffer_info
;
1460 struct tx_packet_desc
*tpd
;
1461 u16 tpd_next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1463 for (j
= 0; j
< count
; j
++) {
1464 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1465 tpd
= ATL1_TPD_DESC(&adapter
->tpd_ring
, tpd_next_to_use
);
1466 tpd
->desc
.csum
.csumpu
= descr
->csum
.csumpu
;
1467 tpd
->desc
.csum
.csumpl
= descr
->csum
.csumpl
;
1468 tpd
->desc
.tso
.tsopu
= descr
->tso
.tsopu
;
1469 tpd
->desc
.tso
.tsopl
= descr
->tso
.tsopl
;
1470 tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1471 tpd
->desc
.data
= descr
->data
;
1472 tpd
->desc
.csum
.csumpu
|= (cpu_to_le16(buffer_info
->length
) &
1473 CSUM_PARAM_BUFLEN_MASK
) << CSUM_PARAM_BUFLEN_SHIFT
;
1475 val
= (descr
->tso
.tsopl
>> TSO_PARAM_SEGMENT_SHIFT
) &
1476 TSO_PARAM_SEGMENT_MASK
;
1478 tpd
->desc
.tso
.tsopl
|= 1 << TSO_PARAM_HDRFLAG_SHIFT
;
1480 if (j
== (count
- 1))
1481 tpd
->desc
.csum
.csumpl
|= 1 << CSUM_PARAM_EOP_SHIFT
;
1483 if (++tpd_next_to_use
== tpd_ring
->count
)
1484 tpd_next_to_use
= 0;
1487 * Force memory writes to complete before letting h/w
1488 * know there are new descriptors to fetch. (Only
1489 * applicable for weak-ordered memory model archs,
1494 atomic_set(&tpd_ring
->next_to_use
, (int)tpd_next_to_use
);
1497 static void atl1_update_mailbox(struct atl1_adapter
*adapter
)
1499 unsigned long flags
;
1500 u32 tpd_next_to_use
;
1501 u32 rfd_next_to_use
;
1502 u32 rrd_next_to_clean
;
1505 spin_lock_irqsave(&adapter
->mb_lock
, flags
);
1507 tpd_next_to_use
= atomic_read(&adapter
->tpd_ring
.next_to_use
);
1508 rfd_next_to_use
= atomic_read(&adapter
->rfd_ring
.next_to_use
);
1509 rrd_next_to_clean
= atomic_read(&adapter
->rrd_ring
.next_to_clean
);
1511 value
= ((rfd_next_to_use
& MB_RFD_PROD_INDX_MASK
) <<
1512 MB_RFD_PROD_INDX_SHIFT
) |
1513 ((rrd_next_to_clean
& MB_RRD_CONS_INDX_MASK
) <<
1514 MB_RRD_CONS_INDX_SHIFT
) |
1515 ((tpd_next_to_use
& MB_TPD_PROD_INDX_MASK
) <<
1516 MB_TPD_PROD_INDX_SHIFT
);
1517 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_MAILBOX
);
1519 spin_unlock_irqrestore(&adapter
->mb_lock
, flags
);
1522 static int atl1_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
1524 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1530 union tpd_descr param
;
1533 unsigned long flags
;
1534 unsigned int nr_frags
= 0;
1535 unsigned int mss
= 0;
1537 unsigned int proto_hdr_len
;
1539 len
-= skb
->data_len
;
1541 if (unlikely(skb
->len
== 0)) {
1542 dev_kfree_skb_any(skb
);
1543 return NETDEV_TX_OK
;
1547 param
.tso
.tsopu
= 0;
1548 param
.tso
.tsopl
= 0;
1549 param
.csum
.csumpu
= 0;
1550 param
.csum
.csumpl
= 0;
1552 /* nr_frags will be nonzero if we're doing scatter/gather (SG) */
1553 nr_frags
= skb_shinfo(skb
)->nr_frags
;
1554 for (f
= 0; f
< nr_frags
; f
++) {
1555 frag_size
= skb_shinfo(skb
)->frags
[f
].size
;
1558 (frag_size
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1561 /* mss will be nonzero if we're doing segment offload (TSO/GSO) */
1562 mss
= skb_shinfo(skb
)->gso_size
;
1564 if (skb
->protocol
== htons(ETH_P_IP
)) {
1565 proto_hdr_len
= (skb_transport_offset(skb
) +
1567 if (unlikely(proto_hdr_len
> len
)) {
1568 dev_kfree_skb_any(skb
);
1569 return NETDEV_TX_OK
;
1571 /* need additional TPD ? */
1572 if (proto_hdr_len
!= len
)
1573 count
+= (len
- proto_hdr_len
+
1574 MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1578 local_irq_save(flags
);
1579 if (!spin_trylock(&adapter
->lock
)) {
1580 /* Can't get lock - tell upper layer to requeue */
1581 local_irq_restore(flags
);
1582 printk(KERN_DEBUG
"%s: TX locked\n", atl1_driver_name
);
1583 return NETDEV_TX_LOCKED
;
1586 if (tpd_avail(&adapter
->tpd_ring
) < count
) {
1587 /* not enough descriptors */
1588 netif_stop_queue(netdev
);
1589 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1590 printk(KERN_DEBUG
"%s: TX busy\n", atl1_driver_name
);
1591 return NETDEV_TX_BUSY
;
1596 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
1597 vlan_tag
= vlan_tx_tag_get(skb
);
1598 vlan_tag
= (vlan_tag
<< 4) | (vlan_tag
>> 13) |
1599 ((vlan_tag
>> 9) & 0x8);
1600 param
.csum
.csumpl
|= 1 << CSUM_PARAM_INSVLAG_SHIFT
;
1601 param
.csum
.csumpu
|= (vlan_tag
& CSUM_PARAM_VALANTAG_MASK
) <<
1602 CSUM_PARAM_VALAN_SHIFT
;
1605 tso
= atl1_tso(adapter
, skb
, ¶m
.tso
);
1607 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1608 dev_kfree_skb_any(skb
);
1609 return NETDEV_TX_OK
;
1613 ret_val
= atl1_tx_csum(adapter
, skb
, ¶m
.csum
);
1615 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1616 dev_kfree_skb_any(skb
);
1617 return NETDEV_TX_OK
;
1621 val
= (param
.csum
.csumpl
>> CSUM_PARAM_SEGMENT_SHIFT
) &
1622 CSUM_PARAM_SEGMENT_MASK
;
1623 atl1_tx_map(adapter
, skb
, 1 == val
);
1624 atl1_tx_queue(adapter
, count
, ¶m
);
1625 netdev
->trans_start
= jiffies
;
1626 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1627 atl1_update_mailbox(adapter
);
1628 return NETDEV_TX_OK
;
1632 * atl1_get_stats - Get System Network Statistics
1633 * @netdev: network interface device structure
1635 * Returns the address of the device statistics structure.
1636 * The statistics are actually updated from the timer callback.
1638 static struct net_device_stats
*atl1_get_stats(struct net_device
*netdev
)
1640 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1641 return &adapter
->net_stats
;
1645 * atl1_clean_rx_ring - Free RFD Buffers
1646 * @adapter: board private structure
1648 static void atl1_clean_rx_ring(struct atl1_adapter
*adapter
)
1650 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1651 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1652 struct atl1_buffer
*buffer_info
;
1653 struct pci_dev
*pdev
= adapter
->pdev
;
1657 /* Free all the Rx ring sk_buffs */
1658 for (i
= 0; i
< rfd_ring
->count
; i
++) {
1659 buffer_info
= &rfd_ring
->buffer_info
[i
];
1660 if (buffer_info
->dma
) {
1661 pci_unmap_page(pdev
,
1663 buffer_info
->length
,
1664 PCI_DMA_FROMDEVICE
);
1665 buffer_info
->dma
= 0;
1667 if (buffer_info
->skb
) {
1668 dev_kfree_skb(buffer_info
->skb
);
1669 buffer_info
->skb
= NULL
;
1673 size
= sizeof(struct atl1_buffer
) * rfd_ring
->count
;
1674 memset(rfd_ring
->buffer_info
, 0, size
);
1676 /* Zero out the descriptor ring */
1677 memset(rfd_ring
->desc
, 0, rfd_ring
->size
);
1679 rfd_ring
->next_to_clean
= 0;
1680 atomic_set(&rfd_ring
->next_to_use
, 0);
1682 rrd_ring
->next_to_use
= 0;
1683 atomic_set(&rrd_ring
->next_to_clean
, 0);
1687 * atl1_clean_tx_ring - Free Tx Buffers
1688 * @adapter: board private structure
1690 static void atl1_clean_tx_ring(struct atl1_adapter
*adapter
)
1692 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1693 struct atl1_buffer
*buffer_info
;
1694 struct pci_dev
*pdev
= adapter
->pdev
;
1698 /* Free all the Tx ring sk_buffs */
1699 for (i
= 0; i
< tpd_ring
->count
; i
++) {
1700 buffer_info
= &tpd_ring
->buffer_info
[i
];
1701 if (buffer_info
->dma
) {
1702 pci_unmap_page(pdev
, buffer_info
->dma
,
1703 buffer_info
->length
, PCI_DMA_TODEVICE
);
1704 buffer_info
->dma
= 0;
1708 for (i
= 0; i
< tpd_ring
->count
; i
++) {
1709 buffer_info
= &tpd_ring
->buffer_info
[i
];
1710 if (buffer_info
->skb
) {
1711 dev_kfree_skb_any(buffer_info
->skb
);
1712 buffer_info
->skb
= NULL
;
1716 size
= sizeof(struct atl1_buffer
) * tpd_ring
->count
;
1717 memset(tpd_ring
->buffer_info
, 0, size
);
1719 /* Zero out the descriptor ring */
1720 memset(tpd_ring
->desc
, 0, tpd_ring
->size
);
1722 atomic_set(&tpd_ring
->next_to_use
, 0);
1723 atomic_set(&tpd_ring
->next_to_clean
, 0);
1727 * atl1_free_ring_resources - Free Tx / RX descriptor Resources
1728 * @adapter: board private structure
1730 * Free all transmit software resources
1732 void atl1_free_ring_resources(struct atl1_adapter
*adapter
)
1734 struct pci_dev
*pdev
= adapter
->pdev
;
1735 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1736 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1737 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1738 struct atl1_ring_header
*ring_header
= &adapter
->ring_header
;
1740 atl1_clean_tx_ring(adapter
);
1741 atl1_clean_rx_ring(adapter
);
1743 kfree(tpd_ring
->buffer_info
);
1744 pci_free_consistent(pdev
, ring_header
->size
, ring_header
->desc
,
1747 tpd_ring
->buffer_info
= NULL
;
1748 tpd_ring
->desc
= NULL
;
1751 rfd_ring
->buffer_info
= NULL
;
1752 rfd_ring
->desc
= NULL
;
1755 rrd_ring
->desc
= NULL
;
1759 s32
atl1_up(struct atl1_adapter
*adapter
)
1761 struct net_device
*netdev
= adapter
->netdev
;
1763 int irq_flags
= IRQF_SAMPLE_RANDOM
;
1765 /* hardware has been reset, we need to reload some things */
1766 atl1_set_multi(netdev
);
1767 atl1_restore_vlan(adapter
);
1768 err
= atl1_alloc_rx_buffers(adapter
);
1769 if (unlikely(!err
)) /* no RX BUFFER allocated */
1772 if (unlikely(atl1_configure(adapter
))) {
1777 err
= pci_enable_msi(adapter
->pdev
);
1779 dev_info(&adapter
->pdev
->dev
,
1780 "Unable to enable MSI: %d\n", err
);
1781 irq_flags
|= IRQF_SHARED
;
1784 err
= request_irq(adapter
->pdev
->irq
, &atl1_intr
, irq_flags
,
1785 netdev
->name
, netdev
);
1789 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1790 atl1_irq_enable(adapter
);
1791 atl1_check_link(adapter
);
1794 /* FIXME: unreachable code! -- CHS */
1795 /* free irq disable any interrupt */
1796 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
1797 free_irq(adapter
->pdev
->irq
, netdev
);
1800 pci_disable_msi(adapter
->pdev
);
1801 /* free rx_buffers */
1802 atl1_clean_rx_ring(adapter
);
1806 void atl1_down(struct atl1_adapter
*adapter
)
1808 struct net_device
*netdev
= adapter
->netdev
;
1810 del_timer_sync(&adapter
->watchdog_timer
);
1811 del_timer_sync(&adapter
->phy_config_timer
);
1812 adapter
->phy_timer_pending
= false;
1814 atl1_irq_disable(adapter
);
1815 free_irq(adapter
->pdev
->irq
, netdev
);
1816 pci_disable_msi(adapter
->pdev
);
1817 atl1_reset_hw(&adapter
->hw
);
1818 adapter
->cmb
.cmb
->int_stats
= 0;
1820 adapter
->link_speed
= SPEED_0
;
1821 adapter
->link_duplex
= -1;
1822 netif_carrier_off(netdev
);
1823 netif_stop_queue(netdev
);
1825 atl1_clean_tx_ring(adapter
);
1826 atl1_clean_rx_ring(adapter
);
1830 * atl1_change_mtu - Change the Maximum Transfer Unit
1831 * @netdev: network interface device structure
1832 * @new_mtu: new value for maximum frame size
1834 * Returns 0 on success, negative on failure
1836 static int atl1_change_mtu(struct net_device
*netdev
, int new_mtu
)
1838 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1839 int old_mtu
= netdev
->mtu
;
1840 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1842 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
1843 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
1844 printk(KERN_WARNING
"%s: invalid MTU setting\n",
1849 adapter
->hw
.max_frame_size
= max_frame
;
1850 adapter
->hw
.tx_jumbo_task_th
= (max_frame
+ 7) >> 3;
1851 adapter
->rx_buffer_len
= (max_frame
+ 7) & ~7;
1852 adapter
->hw
.rx_jumbo_th
= adapter
->rx_buffer_len
/ 8;
1854 netdev
->mtu
= new_mtu
;
1855 if ((old_mtu
!= new_mtu
) && netif_running(netdev
)) {
1864 * atl1_set_mac - Change the Ethernet Address of the NIC
1865 * @netdev: network interface device structure
1866 * @p: pointer to an address structure
1868 * Returns 0 on success, negative on failure
1870 static int atl1_set_mac(struct net_device
*netdev
, void *p
)
1872 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1873 struct sockaddr
*addr
= p
;
1875 if (netif_running(netdev
))
1878 if (!is_valid_ether_addr(addr
->sa_data
))
1879 return -EADDRNOTAVAIL
;
1881 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
1882 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
1884 atl1_set_mac_addr(&adapter
->hw
);
1889 * atl1_watchdog - Timer Call-back
1890 * @data: pointer to netdev cast into an unsigned long
1892 static void atl1_watchdog(unsigned long data
)
1894 struct atl1_adapter
*adapter
= (struct atl1_adapter
*)data
;
1896 /* Reset the timer */
1897 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1900 static int mdio_read(struct net_device
*netdev
, int phy_id
, int reg_num
)
1902 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1905 atl1_read_phy_reg(&adapter
->hw
, reg_num
& 0x1f, &result
);
1910 static void mdio_write(struct net_device
*netdev
, int phy_id
, int reg_num
, int val
)
1912 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1914 atl1_write_phy_reg(&adapter
->hw
, reg_num
, val
);
1923 static int atl1_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
1925 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1926 unsigned long flags
;
1929 if (!netif_running(netdev
))
1932 spin_lock_irqsave(&adapter
->lock
, flags
);
1933 retval
= generic_mii_ioctl(&adapter
->mii
, if_mii(ifr
), cmd
, NULL
);
1934 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1945 static int atl1_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
1951 return atl1_mii_ioctl(netdev
, ifr
, cmd
);
1958 * atl1_tx_timeout - Respond to a Tx Hang
1959 * @netdev: network interface device structure
1961 static void atl1_tx_timeout(struct net_device
*netdev
)
1963 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1964 /* Do the reset outside of interrupt context */
1965 schedule_work(&adapter
->tx_timeout_task
);
1969 * atl1_phy_config - Timer Call-back
1970 * @data: pointer to netdev cast into an unsigned long
1972 static void atl1_phy_config(unsigned long data
)
1974 struct atl1_adapter
*adapter
= (struct atl1_adapter
*)data
;
1975 struct atl1_hw
*hw
= &adapter
->hw
;
1976 unsigned long flags
;
1978 spin_lock_irqsave(&adapter
->lock
, flags
);
1979 adapter
->phy_timer_pending
= false;
1980 atl1_write_phy_reg(hw
, MII_ADVERTISE
, hw
->mii_autoneg_adv_reg
);
1981 atl1_write_phy_reg(hw
, MII_AT001_CR
, hw
->mii_1000t_ctrl_reg
);
1982 atl1_write_phy_reg(hw
, MII_BMCR
, MII_CR_RESET
| MII_CR_AUTO_NEG_EN
);
1983 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1986 int atl1_reset(struct atl1_adapter
*adapter
)
1990 ret
= atl1_reset_hw(&adapter
->hw
);
1991 if (ret
!= ATL1_SUCCESS
)
1993 return atl1_init_hw(&adapter
->hw
);
1997 * atl1_open - Called when a network interface is made active
1998 * @netdev: network interface device structure
2000 * Returns 0 on success, negative value on failure
2002 * The open entry point is called when a network interface is made
2003 * active by the system (IFF_UP). At this point all resources needed
2004 * for transmit and receive operations are allocated, the interrupt
2005 * handler is registered with the OS, the watchdog timer is started,
2006 * and the stack is notified that the interface is ready.
2008 static int atl1_open(struct net_device
*netdev
)
2010 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2013 /* allocate transmit descriptors */
2014 err
= atl1_setup_ring_resources(adapter
);
2018 err
= atl1_up(adapter
);
2025 atl1_reset(adapter
);
2030 * atl1_close - Disables a network interface
2031 * @netdev: network interface device structure
2033 * Returns 0, this is not allowed to fail
2035 * The close entry point is called when an interface is de-activated
2036 * by the OS. The hardware is still under the drivers control, but
2037 * needs to be disabled. A global MAC reset is issued to stop the
2038 * hardware, and all transmit and receive resources are freed.
2040 static int atl1_close(struct net_device
*netdev
)
2042 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2044 atl1_free_ring_resources(adapter
);
2049 * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
2050 * will assert. We do soft reset <0x1400=1> according
2051 * with the SPEC. BUT, it seemes that PCIE or DMA
2052 * state-machine will not be reset. DMAR_TO_INT will
2053 * assert again and again.
2055 static void atl1_tx_timeout_task(struct work_struct
*work
)
2057 struct atl1_adapter
*adapter
=
2058 container_of(work
, struct atl1_adapter
, tx_timeout_task
);
2059 struct net_device
*netdev
= adapter
->netdev
;
2061 netif_device_detach(netdev
);
2064 netif_device_attach(netdev
);
2068 * atl1_link_chg_task - deal with link change event Out of interrupt context
2070 static void atl1_link_chg_task(struct work_struct
*work
)
2072 struct atl1_adapter
*adapter
=
2073 container_of(work
, struct atl1_adapter
, link_chg_task
);
2074 unsigned long flags
;
2076 spin_lock_irqsave(&adapter
->lock
, flags
);
2077 atl1_check_link(adapter
);
2078 spin_unlock_irqrestore(&adapter
->lock
, flags
);
2082 * atl1_pcie_patch - Patch for PCIE module
2084 static void atl1_pcie_patch(struct atl1_adapter
*adapter
)
2088 iowrite32(value
, adapter
->hw
.hw_addr
+ 0x12FC);
2089 /* pcie flow control mode change */
2090 value
= ioread32(adapter
->hw
.hw_addr
+ 0x1008);
2092 iowrite32(value
, adapter
->hw
.hw_addr
+ 0x1008);
2096 * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
2097 * on PCI Command register is disable.
2098 * The function enable this bit.
2099 * Brackett, 2006/03/15
2101 static void atl1_via_workaround(struct atl1_adapter
*adapter
)
2103 unsigned long value
;
2105 value
= ioread16(adapter
->hw
.hw_addr
+ PCI_COMMAND
);
2106 if (value
& PCI_COMMAND_INTX_DISABLE
)
2107 value
&= ~PCI_COMMAND_INTX_DISABLE
;
2108 iowrite32(value
, adapter
->hw
.hw_addr
+ PCI_COMMAND
);
2112 * atl1_probe - Device Initialization Routine
2113 * @pdev: PCI device information struct
2114 * @ent: entry in atl1_pci_tbl
2116 * Returns 0 on success, negative on failure
2118 * atl1_probe initializes an adapter identified by a pci_dev structure.
2119 * The OS initialization, configuring of the adapter private structure,
2120 * and a hardware reset occur.
2122 static int __devinit
atl1_probe(struct pci_dev
*pdev
,
2123 const struct pci_device_id
*ent
)
2125 struct net_device
*netdev
;
2126 struct atl1_adapter
*adapter
;
2127 static int cards_found
= 0;
2128 bool pci_using_64
= true;
2131 err
= pci_enable_device(pdev
);
2135 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
2137 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
2140 "%s: no usable DMA configuration, aborting\n",
2144 pci_using_64
= false;
2146 /* Mark all PCI regions associated with PCI device
2147 * pdev as being reserved by owner atl1_driver_name
2149 err
= pci_request_regions(pdev
, atl1_driver_name
);
2151 goto err_request_regions
;
2153 /* Enables bus-mastering on the device and calls
2154 * pcibios_set_master to do the needed arch specific settings
2156 pci_set_master(pdev
);
2158 netdev
= alloc_etherdev(sizeof(struct atl1_adapter
));
2161 goto err_alloc_etherdev
;
2163 SET_MODULE_OWNER(netdev
);
2164 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2166 pci_set_drvdata(pdev
, netdev
);
2167 adapter
= netdev_priv(netdev
);
2168 adapter
->netdev
= netdev
;
2169 adapter
->pdev
= pdev
;
2170 adapter
->hw
.back
= adapter
;
2172 adapter
->hw
.hw_addr
= pci_iomap(pdev
, 0, 0);
2173 if (!adapter
->hw
.hw_addr
) {
2177 /* get device revision number */
2178 adapter
->hw
.dev_rev
= ioread16(adapter
->hw
.hw_addr
+ (REG_MASTER_CTRL
+ 2));
2180 /* set default ring resource counts */
2181 adapter
->rfd_ring
.count
= adapter
->rrd_ring
.count
= ATL1_DEFAULT_RFD
;
2182 adapter
->tpd_ring
.count
= ATL1_DEFAULT_TPD
;
2184 adapter
->mii
.dev
= netdev
;
2185 adapter
->mii
.mdio_read
= mdio_read
;
2186 adapter
->mii
.mdio_write
= mdio_write
;
2187 adapter
->mii
.phy_id_mask
= 0x1f;
2188 adapter
->mii
.reg_num_mask
= 0x1f;
2190 netdev
->open
= &atl1_open
;
2191 netdev
->stop
= &atl1_close
;
2192 netdev
->hard_start_xmit
= &atl1_xmit_frame
;
2193 netdev
->get_stats
= &atl1_get_stats
;
2194 netdev
->set_multicast_list
= &atl1_set_multi
;
2195 netdev
->set_mac_address
= &atl1_set_mac
;
2196 netdev
->change_mtu
= &atl1_change_mtu
;
2197 netdev
->do_ioctl
= &atl1_ioctl
;
2198 netdev
->tx_timeout
= &atl1_tx_timeout
;
2199 netdev
->watchdog_timeo
= 5 * HZ
;
2200 netdev
->vlan_rx_register
= atl1_vlan_rx_register
;
2201 netdev
->vlan_rx_add_vid
= atl1_vlan_rx_add_vid
;
2202 netdev
->vlan_rx_kill_vid
= atl1_vlan_rx_kill_vid
;
2203 netdev
->ethtool_ops
= &atl1_ethtool_ops
;
2204 adapter
->bd_number
= cards_found
;
2205 adapter
->pci_using_64
= pci_using_64
;
2207 /* setup the private structure */
2208 err
= atl1_sw_init(adapter
);
2212 netdev
->features
= NETIF_F_HW_CSUM
;
2213 netdev
->features
|= NETIF_F_SG
;
2214 netdev
->features
|= (NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_RX
);
2217 * FIXME - Until tso performance gets fixed, disable the feature.
2218 * Enable it with ethtool -K if desired.
2220 /* netdev->features |= NETIF_F_TSO; */
2223 netdev
->features
|= NETIF_F_HIGHDMA
;
2225 netdev
->features
|= NETIF_F_LLTX
;
2228 * patch for some L1 of old version,
2229 * the final version of L1 may not need these
2232 /* atl1_pcie_patch(adapter); */
2234 /* really reset GPHY core */
2235 iowrite16(0, adapter
->hw
.hw_addr
+ REG_GPHY_ENABLE
);
2238 * reset the controller to
2239 * put the device in a known good starting state
2241 if (atl1_reset_hw(&adapter
->hw
)) {
2246 /* copy the MAC address out of the EEPROM */
2247 atl1_read_mac_addr(&adapter
->hw
);
2248 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2250 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
2255 atl1_check_options(adapter
);
2257 /* pre-init the MAC, and setup link */
2258 err
= atl1_init_hw(&adapter
->hw
);
2264 atl1_pcie_patch(adapter
);
2265 /* assume we have no link for now */
2266 netif_carrier_off(netdev
);
2267 netif_stop_queue(netdev
);
2269 init_timer(&adapter
->watchdog_timer
);
2270 adapter
->watchdog_timer
.function
= &atl1_watchdog
;
2271 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
2273 init_timer(&adapter
->phy_config_timer
);
2274 adapter
->phy_config_timer
.function
= &atl1_phy_config
;
2275 adapter
->phy_config_timer
.data
= (unsigned long)adapter
;
2276 adapter
->phy_timer_pending
= false;
2278 INIT_WORK(&adapter
->tx_timeout_task
, atl1_tx_timeout_task
);
2280 INIT_WORK(&adapter
->link_chg_task
, atl1_link_chg_task
);
2282 INIT_WORK(&adapter
->pcie_dma_to_rst_task
, atl1_tx_timeout_task
);
2284 err
= register_netdev(netdev
);
2289 atl1_via_workaround(adapter
);
2293 pci_iounmap(pdev
, adapter
->hw
.hw_addr
);
2295 free_netdev(netdev
);
2297 pci_release_regions(pdev
);
2299 err_request_regions
:
2300 pci_disable_device(pdev
);
2305 * atl1_remove - Device Removal Routine
2306 * @pdev: PCI device information struct
2308 * atl1_remove is called by the PCI subsystem to alert the driver
2309 * that it should release a PCI device. The could be caused by a
2310 * Hot-Plug event, or because the driver is going to be removed from
2313 static void __devexit
atl1_remove(struct pci_dev
*pdev
)
2315 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2316 struct atl1_adapter
*adapter
;
2317 /* Device not available. Return. */
2321 adapter
= netdev_priv(netdev
);
2323 /* Some atl1 boards lack persistent storage for their MAC, and get it
2324 * from the BIOS during POST. If we've been messing with the MAC
2325 * address, we need to save the permanent one.
2327 if (memcmp(adapter
->hw
.mac_addr
, adapter
->hw
.perm_mac_addr
, ETH_ALEN
)) {
2328 memcpy(adapter
->hw
.mac_addr
, adapter
->hw
.perm_mac_addr
, ETH_ALEN
);
2329 atl1_set_mac_addr(&adapter
->hw
);
2332 iowrite16(0, adapter
->hw
.hw_addr
+ REG_GPHY_ENABLE
);
2333 unregister_netdev(netdev
);
2334 pci_iounmap(pdev
, adapter
->hw
.hw_addr
);
2335 pci_release_regions(pdev
);
2336 free_netdev(netdev
);
2337 pci_disable_device(pdev
);
2341 static int atl1_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2343 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2344 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2345 struct atl1_hw
*hw
= &adapter
->hw
;
2347 u32 wufc
= adapter
->wol
;
2349 netif_device_detach(netdev
);
2350 if (netif_running(netdev
))
2353 atl1_read_phy_reg(hw
, MII_BMSR
, (u16
*) & ctrl
);
2354 atl1_read_phy_reg(hw
, MII_BMSR
, (u16
*) & ctrl
);
2355 if (ctrl
& BMSR_LSTATUS
)
2356 wufc
&= ~ATL1_WUFC_LNKC
;
2358 /* reduce speed to 10/100M */
2360 atl1_phy_enter_power_saving(hw
);
2361 /* if resume, let driver to re- setup link */
2362 hw
->phy_configured
= false;
2363 atl1_set_mac_addr(hw
);
2364 atl1_set_multi(netdev
);
2367 /* turn on magic packet wol */
2368 if (wufc
& ATL1_WUFC_MAG
)
2369 ctrl
= WOL_MAGIC_EN
| WOL_MAGIC_PME_EN
;
2371 /* turn on Link change WOL */
2372 if (wufc
& ATL1_WUFC_LNKC
)
2373 ctrl
|= (WOL_LINK_CHG_EN
| WOL_LINK_CHG_PME_EN
);
2374 iowrite32(ctrl
, hw
->hw_addr
+ REG_WOL_CTRL
);
2376 /* turn on all-multi mode if wake on multicast is enabled */
2377 ctrl
= ioread32(hw
->hw_addr
+ REG_MAC_CTRL
);
2378 ctrl
&= ~MAC_CTRL_DBG
;
2379 ctrl
&= ~MAC_CTRL_PROMIS_EN
;
2380 if (wufc
& ATL1_WUFC_MC
)
2381 ctrl
|= MAC_CTRL_MC_ALL_EN
;
2383 ctrl
&= ~MAC_CTRL_MC_ALL_EN
;
2385 /* turn on broadcast mode if wake on-BC is enabled */
2386 if (wufc
& ATL1_WUFC_BC
)
2387 ctrl
|= MAC_CTRL_BC_EN
;
2389 ctrl
&= ~MAC_CTRL_BC_EN
;
2392 ctrl
|= MAC_CTRL_RX_EN
;
2393 iowrite32(ctrl
, hw
->hw_addr
+ REG_MAC_CTRL
);
2394 pci_enable_wake(pdev
, PCI_D3hot
, 1);
2395 pci_enable_wake(pdev
, PCI_D3cold
, 1); /* 4 == D3 cold */
2397 iowrite32(0, hw
->hw_addr
+ REG_WOL_CTRL
);
2398 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2399 pci_enable_wake(pdev
, PCI_D3cold
, 0); /* 4 == D3 cold */
2402 pci_save_state(pdev
);
2403 pci_disable_device(pdev
);
2405 pci_set_power_state(pdev
, PCI_D3hot
);
2410 static int atl1_resume(struct pci_dev
*pdev
)
2412 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2413 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2416 pci_set_power_state(pdev
, 0);
2417 pci_restore_state(pdev
);
2419 ret_val
= pci_enable_device(pdev
);
2420 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2421 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2423 iowrite32(0, adapter
->hw
.hw_addr
+ REG_WOL_CTRL
);
2424 atl1_reset(adapter
);
2426 if (netif_running(netdev
))
2428 netif_device_attach(netdev
);
2430 atl1_via_workaround(adapter
);
2435 #define atl1_suspend NULL
2436 #define atl1_resume NULL
2439 static struct pci_driver atl1_driver
= {
2440 .name
= atl1_driver_name
,
2441 .id_table
= atl1_pci_tbl
,
2442 .probe
= atl1_probe
,
2443 .remove
= __devexit_p(atl1_remove
),
2444 /* Power Managment Hooks */
2445 /* probably broken right now -- CHS */
2446 .suspend
= atl1_suspend
,
2447 .resume
= atl1_resume
2451 * atl1_exit_module - Driver Exit Cleanup Routine
2453 * atl1_exit_module is called just before the driver is removed
2456 static void __exit
atl1_exit_module(void)
2458 pci_unregister_driver(&atl1_driver
);
2462 * atl1_init_module - Driver Registration Routine
2464 * atl1_init_module is the first routine called when the driver is
2465 * loaded. All it does is register with the PCI subsystem.
2467 static int __init
atl1_init_module(void)
2469 printk(KERN_INFO
"%s - version %s\n", atl1_driver_string
, DRIVER_VERSION
);
2470 printk(KERN_INFO
"%s\n", atl1_copyright
);
2471 return pci_register_driver(&atl1_driver
);
2474 module_init(atl1_init_module
);
2475 module_exit(atl1_exit_module
);