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 net_device
*netdev
= adapter
->netdev
;
412 struct pci_dev
*pdev
= adapter
->pdev
;
414 unsigned long offset
;
415 struct atl1_buffer
*buffer_info
, *next_info
;
418 u16 rfd_next_to_use
, next_next
;
419 struct rx_free_desc
*rfd_desc
;
421 next_next
= rfd_next_to_use
= atomic_read(&rfd_ring
->next_to_use
);
422 if (++next_next
== rfd_ring
->count
)
424 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
425 next_info
= &rfd_ring
->buffer_info
[next_next
];
427 while (!buffer_info
->alloced
&& !next_info
->alloced
) {
428 if (buffer_info
->skb
) {
429 buffer_info
->alloced
= 1;
433 rfd_desc
= ATL1_RFD_DESC(rfd_ring
, rfd_next_to_use
);
435 skb
= dev_alloc_skb(adapter
->rx_buffer_len
+ NET_IP_ALIGN
);
436 if (unlikely(!skb
)) { /* Better luck next round */
437 adapter
->net_stats
.rx_dropped
++;
442 * Make buffer alignment 2 beyond a 16 byte boundary
443 * this will result in a 16 byte aligned IP header after
444 * the 14 byte MAC header is removed
446 skb_reserve(skb
, NET_IP_ALIGN
);
449 buffer_info
->alloced
= 1;
450 buffer_info
->skb
= skb
;
451 buffer_info
->length
= (u16
) adapter
->rx_buffer_len
;
452 page
= virt_to_page(skb
->data
);
453 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
454 buffer_info
->dma
= pci_map_page(pdev
, page
, offset
,
455 adapter
->rx_buffer_len
,
457 rfd_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
458 rfd_desc
->buf_len
= cpu_to_le16(adapter
->rx_buffer_len
);
459 rfd_desc
->coalese
= 0;
462 rfd_next_to_use
= next_next
;
463 if (unlikely(++next_next
== rfd_ring
->count
))
466 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
467 next_info
= &rfd_ring
->buffer_info
[next_next
];
473 * Force memory writes to complete before letting h/w
474 * know there are new descriptors to fetch. (Only
475 * applicable for weak-ordered memory model archs,
479 atomic_set(&rfd_ring
->next_to_use
, (int)rfd_next_to_use
);
484 static void atl1_intr_rx(struct atl1_adapter
*adapter
)
488 u16 rrd_next_to_clean
;
490 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
491 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
492 struct atl1_buffer
*buffer_info
;
493 struct rx_return_desc
*rrd
;
498 rrd_next_to_clean
= atomic_read(&rrd_ring
->next_to_clean
);
501 rrd
= ATL1_RRD_DESC(rrd_ring
, rrd_next_to_clean
);
503 if (likely(rrd
->xsz
.valid
)) { /* packet valid */
505 /* check rrd status */
506 if (likely(rrd
->num_buf
== 1))
509 /* rrd seems to be bad */
510 if (unlikely(i
-- > 0)) {
511 /* rrd may not be DMAed completely */
513 "%s: RRD may not be DMAed completely\n",
519 printk(KERN_DEBUG
"%s: bad RRD\n", atl1_driver_name
);
520 /* see if update RFD index */
521 if (rrd
->num_buf
> 1) {
524 (rrd
->xsz
.xsum_sz
.pkt_size
+
525 adapter
->rx_buffer_len
-
526 1) / adapter
->rx_buffer_len
;
527 if (rrd
->num_buf
== num_buf
) {
528 /* clean alloc flag for bad rrd */
529 while (rfd_ring
->next_to_clean
!=
530 (rrd
->buf_indx
+ num_buf
)) {
531 rfd_ring
->buffer_info
[rfd_ring
->
532 next_to_clean
].alloced
= 0;
533 if (++rfd_ring
->next_to_clean
==
544 if (++rrd_next_to_clean
== rrd_ring
->count
)
545 rrd_next_to_clean
= 0;
548 } else { /* current rrd still not be updated */
553 /* clean alloc flag for bad rrd */
554 while (rfd_ring
->next_to_clean
!= rrd
->buf_indx
) {
555 rfd_ring
->buffer_info
[rfd_ring
->next_to_clean
].alloced
=
557 if (++rfd_ring
->next_to_clean
== rfd_ring
->count
)
558 rfd_ring
->next_to_clean
= 0;
561 buffer_info
= &rfd_ring
->buffer_info
[rrd
->buf_indx
];
562 if (++rfd_ring
->next_to_clean
== rfd_ring
->count
)
563 rfd_ring
->next_to_clean
= 0;
565 /* update rrd next to clean */
566 if (++rrd_next_to_clean
== rrd_ring
->count
)
567 rrd_next_to_clean
= 0;
570 if (unlikely(rrd
->pkt_flg
& PACKET_FLAG_ERR
)) {
572 (ERR_FLAG_IP_CHKSUM
| ERR_FLAG_L4_CHKSUM
574 /* packet error, don't need upstream */
575 buffer_info
->alloced
= 0;
582 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
583 buffer_info
->length
, PCI_DMA_FROMDEVICE
);
584 skb
= buffer_info
->skb
;
585 length
= le16_to_cpu(rrd
->xsz
.xsum_sz
.pkt_size
);
587 skb_put(skb
, length
- ETHERNET_FCS_SIZE
);
589 /* Receive Checksum Offload */
590 atl1_rx_checksum(adapter
, rrd
, skb
);
591 skb
->protocol
= eth_type_trans(skb
, adapter
->netdev
);
593 if (adapter
->vlgrp
&& (rrd
->pkt_flg
& PACKET_FLAG_VLAN_INS
)) {
594 u16 vlan_tag
= (rrd
->vlan_tag
>> 4) |
595 ((rrd
->vlan_tag
& 7) << 13) |
596 ((rrd
->vlan_tag
& 8) << 9);
597 vlan_hwaccel_rx(skb
, adapter
->vlgrp
, vlan_tag
);
601 /* let protocol layer free skb */
602 buffer_info
->skb
= NULL
;
603 buffer_info
->alloced
= 0;
606 adapter
->netdev
->last_rx
= jiffies
;
609 atomic_set(&rrd_ring
->next_to_clean
, rrd_next_to_clean
);
611 atl1_alloc_rx_buffers(adapter
);
613 /* update mailbox ? */
617 u32 rrd_next_to_clean
;
619 spin_lock(&adapter
->mb_lock
);
621 tpd_next_to_use
= atomic_read(&adapter
->tpd_ring
.next_to_use
);
623 atomic_read(&adapter
->rfd_ring
.next_to_use
);
625 atomic_read(&adapter
->rrd_ring
.next_to_clean
);
626 value
= ((rfd_next_to_use
& MB_RFD_PROD_INDX_MASK
) <<
627 MB_RFD_PROD_INDX_SHIFT
) |
628 ((rrd_next_to_clean
& MB_RRD_CONS_INDX_MASK
) <<
629 MB_RRD_CONS_INDX_SHIFT
) |
630 ((tpd_next_to_use
& MB_TPD_PROD_INDX_MASK
) <<
631 MB_TPD_PROD_INDX_SHIFT
);
632 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_MAILBOX
);
633 spin_unlock(&adapter
->mb_lock
);
637 static void atl1_intr_tx(struct atl1_adapter
*adapter
)
639 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
640 struct atl1_buffer
*buffer_info
;
641 u16 sw_tpd_next_to_clean
;
642 u16 cmb_tpd_next_to_clean
;
645 sw_tpd_next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
646 cmb_tpd_next_to_clean
= le16_to_cpu(adapter
->cmb
.cmb
->tpd_cons_idx
);
648 while (cmb_tpd_next_to_clean
!= sw_tpd_next_to_clean
) {
649 struct tx_packet_desc
*tpd
;
651 tpd
= ATL1_TPD_DESC(tpd_ring
, sw_tpd_next_to_clean
);
652 buffer_info
= &tpd_ring
->buffer_info
[sw_tpd_next_to_clean
];
653 if (buffer_info
->dma
) {
654 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
655 buffer_info
->length
, PCI_DMA_TODEVICE
);
656 buffer_info
->dma
= 0;
659 if (buffer_info
->skb
) {
660 dev_kfree_skb_irq(buffer_info
->skb
);
661 buffer_info
->skb
= NULL
;
663 tpd
->buffer_addr
= 0;
666 if (++sw_tpd_next_to_clean
== tpd_ring
->count
)
667 sw_tpd_next_to_clean
= 0;
669 atomic_set(&tpd_ring
->next_to_clean
, sw_tpd_next_to_clean
);
671 if (netif_queue_stopped(adapter
->netdev
)
672 && netif_carrier_ok(adapter
->netdev
))
673 netif_wake_queue(adapter
->netdev
);
676 static void atl1_check_for_link(struct atl1_adapter
*adapter
)
678 struct net_device
*netdev
= adapter
->netdev
;
681 spin_lock(&adapter
->lock
);
682 adapter
->phy_timer_pending
= false;
683 atl1_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
684 atl1_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
685 spin_unlock(&adapter
->lock
);
687 /* notify upper layer link down ASAP */
688 if (!(phy_data
& BMSR_LSTATUS
)) { /* Link Down */
689 if (netif_carrier_ok(netdev
)) { /* old link state: Up */
690 printk(KERN_INFO
"%s: %s link is down\n",
691 atl1_driver_name
, netdev
->name
);
692 adapter
->link_speed
= SPEED_0
;
693 netif_carrier_off(netdev
);
694 netif_stop_queue(netdev
);
697 schedule_work(&adapter
->link_chg_task
);
701 * atl1_intr - Interrupt Handler
702 * @irq: interrupt number
703 * @data: pointer to a network interface device structure
704 * @pt_regs: CPU registers structure
706 static irqreturn_t
atl1_intr(int irq
, void *data
)
708 /*struct atl1_adapter *adapter = ((struct net_device *)data)->priv;*/
709 struct atl1_adapter
*adapter
= netdev_priv(data
);
714 status
= adapter
->cmb
.cmb
->int_stats
;
721 /* clear CMB interrupt status at once */
722 adapter
->cmb
.cmb
->int_stats
= 0;
724 if (status
& ISR_GPHY
) /* clear phy status */
725 atl1_clear_phy_int(adapter
);
727 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
728 iowrite32(status
| ISR_DIS_INT
, adapter
->hw
.hw_addr
+ REG_ISR
);
730 /* check if SMB intr */
731 if (status
& ISR_SMB
)
732 atl1_inc_smb(adapter
);
734 /* check if PCIE PHY Link down */
735 if (status
& ISR_PHY_LINKDOWN
) {
736 printk(KERN_DEBUG
"%s: pcie phy link down %x\n",
737 atl1_driver_name
, status
);
738 if (netif_running(adapter
->netdev
)) { /* reset MAC */
739 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
740 schedule_work(&adapter
->pcie_dma_to_rst_task
);
745 /* check if DMA read/write error ? */
746 if (status
& (ISR_DMAR_TO_RST
| ISR_DMAW_TO_RST
)) {
748 "%s: pcie DMA r/w error (status = 0x%x)\n",
749 atl1_driver_name
, status
);
750 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
751 schedule_work(&adapter
->pcie_dma_to_rst_task
);
756 if (status
& ISR_GPHY
) {
757 adapter
->soft_stats
.tx_carrier_errors
++;
758 atl1_check_for_link(adapter
);
762 if (status
& ISR_CMB_TX
)
763 atl1_intr_tx(adapter
);
766 if (unlikely(status
& (ISR_RXF_OV
| ISR_RFD_UNRUN
|
767 ISR_RRD_OV
| ISR_HOST_RFD_UNRUN
|
768 ISR_HOST_RRD_OV
| ISR_CMB_RX
))) {
770 (ISR_RXF_OV
| ISR_RFD_UNRUN
| ISR_RRD_OV
|
771 ISR_HOST_RFD_UNRUN
| ISR_HOST_RRD_OV
))
773 "%s: rx exception: status = 0x%x\n",
774 atl1_driver_name
, status
);
775 atl1_intr_rx(adapter
);
781 } while ((status
= adapter
->cmb
.cmb
->int_stats
));
783 /* re-enable Interrupt */
784 iowrite32(ISR_DIS_SMB
| ISR_DIS_DMA
, adapter
->hw
.hw_addr
+ REG_ISR
);
789 * atl1_set_multi - Multicast and Promiscuous mode set
790 * @netdev: network interface device structure
792 * The set_multi entry point is called whenever the multicast address
793 * list or the network interface flags are updated. This routine is
794 * responsible for configuring the hardware for proper multicast,
795 * promiscuous mode, and all-multi behavior.
797 static void atl1_set_multi(struct net_device
*netdev
)
799 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
800 struct atl1_hw
*hw
= &adapter
->hw
;
801 struct dev_mc_list
*mc_ptr
;
805 /* Check for Promiscuous and All Multicast modes */
806 rctl
= ioread32(hw
->hw_addr
+ REG_MAC_CTRL
);
807 if (netdev
->flags
& IFF_PROMISC
)
808 rctl
|= MAC_CTRL_PROMIS_EN
;
809 else if (netdev
->flags
& IFF_ALLMULTI
) {
810 rctl
|= MAC_CTRL_MC_ALL_EN
;
811 rctl
&= ~MAC_CTRL_PROMIS_EN
;
813 rctl
&= ~(MAC_CTRL_PROMIS_EN
| MAC_CTRL_MC_ALL_EN
);
815 iowrite32(rctl
, hw
->hw_addr
+ REG_MAC_CTRL
);
817 /* clear the old settings from the multicast hash table */
818 iowrite32(0, hw
->hw_addr
+ REG_RX_HASH_TABLE
);
819 iowrite32(0, (hw
->hw_addr
+ REG_RX_HASH_TABLE
) + (1 << 2));
821 /* compute mc addresses' hash value ,and put it into hash table */
822 for (mc_ptr
= netdev
->mc_list
; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
823 hash_value
= atl1_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
824 atl1_hash_set(hw
, hash_value
);
828 static void atl1_setup_mac_ctrl(struct atl1_adapter
*adapter
)
831 struct atl1_hw
*hw
= &adapter
->hw
;
832 struct net_device
*netdev
= adapter
->netdev
;
833 /* Config MAC CTRL Register */
834 value
= MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
;
836 if (FULL_DUPLEX
== adapter
->link_duplex
)
837 value
|= MAC_CTRL_DUPLX
;
839 value
|= ((u32
) ((SPEED_1000
== adapter
->link_speed
) ?
840 MAC_CTRL_SPEED_1000
: MAC_CTRL_SPEED_10_100
) <<
841 MAC_CTRL_SPEED_SHIFT
);
843 value
|= (MAC_CTRL_TX_FLOW
| MAC_CTRL_RX_FLOW
);
845 value
|= (MAC_CTRL_ADD_CRC
| MAC_CTRL_PAD
);
846 /* preamble length */
847 value
|= (((u32
) adapter
->hw
.preamble_len
848 & MAC_CTRL_PRMLEN_MASK
) << MAC_CTRL_PRMLEN_SHIFT
);
851 value
|= MAC_CTRL_RMV_VLAN
;
853 if (adapter->rx_csum)
854 value |= MAC_CTRL_RX_CHKSUM_EN;
857 value
|= MAC_CTRL_BC_EN
;
858 if (netdev
->flags
& IFF_PROMISC
)
859 value
|= MAC_CTRL_PROMIS_EN
;
860 else if (netdev
->flags
& IFF_ALLMULTI
)
861 value
|= MAC_CTRL_MC_ALL_EN
;
862 /* value |= MAC_CTRL_LOOPBACK; */
863 iowrite32(value
, hw
->hw_addr
+ REG_MAC_CTRL
);
866 static u32
atl1_check_link(struct atl1_adapter
*adapter
)
868 struct atl1_hw
*hw
= &adapter
->hw
;
869 struct net_device
*netdev
= adapter
->netdev
;
871 u16 speed
, duplex
, phy_data
;
874 /* MII_BMSR must read twice */
875 atl1_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
876 atl1_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
877 if (!(phy_data
& BMSR_LSTATUS
)) { /* link down */
878 if (netif_carrier_ok(netdev
)) { /* old link state: Up */
879 printk(KERN_INFO
"%s: link is down\n",
881 adapter
->link_speed
= SPEED_0
;
882 netif_carrier_off(netdev
);
883 netif_stop_queue(netdev
);
889 ret_val
= atl1_get_speed_and_duplex(hw
, &speed
, &duplex
);
893 switch (hw
->media_type
) {
894 case MEDIA_TYPE_1000M_FULL
:
895 if (speed
!= SPEED_1000
|| duplex
!= FULL_DUPLEX
)
898 case MEDIA_TYPE_100M_FULL
:
899 if (speed
!= SPEED_100
|| duplex
!= FULL_DUPLEX
)
902 case MEDIA_TYPE_100M_HALF
:
903 if (speed
!= SPEED_100
|| duplex
!= HALF_DUPLEX
)
906 case MEDIA_TYPE_10M_FULL
:
907 if (speed
!= SPEED_10
|| duplex
!= FULL_DUPLEX
)
910 case MEDIA_TYPE_10M_HALF
:
911 if (speed
!= SPEED_10
|| duplex
!= HALF_DUPLEX
)
916 /* link result is our setting */
918 if (adapter
->link_speed
!= speed
919 || adapter
->link_duplex
!= duplex
) {
920 adapter
->link_speed
= speed
;
921 adapter
->link_duplex
= duplex
;
922 atl1_setup_mac_ctrl(adapter
);
923 printk(KERN_INFO
"%s: %s link is up %d Mbps %s\n",
924 atl1_driver_name
, netdev
->name
,
926 adapter
->link_duplex
==
927 FULL_DUPLEX
? "full duplex" : "half duplex");
929 if (!netif_carrier_ok(netdev
)) { /* Link down -> Up */
930 netif_carrier_on(netdev
);
931 netif_wake_queue(netdev
);
936 /* change orignal link status */
937 if (netif_carrier_ok(netdev
)) {
938 adapter
->link_speed
= SPEED_0
;
939 netif_carrier_off(netdev
);
940 netif_stop_queue(netdev
);
943 if (hw
->media_type
!= MEDIA_TYPE_AUTO_SENSOR
&&
944 hw
->media_type
!= MEDIA_TYPE_1000M_FULL
) {
945 switch (hw
->media_type
) {
946 case MEDIA_TYPE_100M_FULL
:
947 phy_data
= MII_CR_FULL_DUPLEX
| MII_CR_SPEED_100
|
950 case MEDIA_TYPE_100M_HALF
:
951 phy_data
= MII_CR_SPEED_100
| MII_CR_RESET
;
953 case MEDIA_TYPE_10M_FULL
:
955 MII_CR_FULL_DUPLEX
| MII_CR_SPEED_10
| MII_CR_RESET
;
957 default: /* MEDIA_TYPE_10M_HALF: */
958 phy_data
= MII_CR_SPEED_10
| MII_CR_RESET
;
961 atl1_write_phy_reg(hw
, MII_BMCR
, phy_data
);
965 /* auto-neg, insert timer to re-config phy */
966 if (!adapter
->phy_timer_pending
) {
967 adapter
->phy_timer_pending
= true;
968 mod_timer(&adapter
->phy_config_timer
, jiffies
+ 3 * HZ
);
974 static void set_flow_ctrl_old(struct atl1_adapter
*adapter
)
978 /* RFD Flow Control */
979 value
= adapter
->rfd_ring
.count
;
985 value
= ((hi
& RXQ_RXF_PAUSE_TH_HI_MASK
) << RXQ_RXF_PAUSE_TH_HI_SHIFT
) |
986 ((lo
& RXQ_RXF_PAUSE_TH_LO_MASK
) << RXQ_RXF_PAUSE_TH_LO_SHIFT
);
987 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_RXQ_RXF_PAUSE_THRESH
);
989 /* RRD Flow Control */
990 value
= adapter
->rrd_ring
.count
;
995 value
= ((hi
& RXQ_RRD_PAUSE_TH_HI_MASK
) << RXQ_RRD_PAUSE_TH_HI_SHIFT
) |
996 ((lo
& RXQ_RRD_PAUSE_TH_LO_MASK
) << RXQ_RRD_PAUSE_TH_LO_SHIFT
);
997 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_RXQ_RRD_PAUSE_THRESH
);
1000 static void set_flow_ctrl_new(struct atl1_hw
*hw
)
1004 /* RXF Flow Control */
1005 value
= ioread32(hw
->hw_addr
+ REG_SRAM_RXF_LEN
);
1012 value
= ((hi
& RXQ_RXF_PAUSE_TH_HI_MASK
) << RXQ_RXF_PAUSE_TH_HI_SHIFT
) |
1013 ((lo
& RXQ_RXF_PAUSE_TH_LO_MASK
) << RXQ_RXF_PAUSE_TH_LO_SHIFT
);
1014 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_RXF_PAUSE_THRESH
);
1016 /* RRD Flow Control */
1017 value
= ioread32(hw
->hw_addr
+ REG_SRAM_RRD_LEN
);
1024 value
= ((hi
& RXQ_RRD_PAUSE_TH_HI_MASK
) << RXQ_RRD_PAUSE_TH_HI_SHIFT
) |
1025 ((lo
& RXQ_RRD_PAUSE_TH_LO_MASK
) << RXQ_RRD_PAUSE_TH_LO_SHIFT
);
1026 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_RRD_PAUSE_THRESH
);
1030 * atl1_configure - Configure Transmit&Receive Unit after Reset
1031 * @adapter: board private structure
1033 * Configure the Tx /Rx unit of the MAC after a reset.
1035 static u32
atl1_configure(struct atl1_adapter
*adapter
)
1037 struct atl1_hw
*hw
= &adapter
->hw
;
1040 /* clear interrupt status */
1041 iowrite32(0xffffffff, adapter
->hw
.hw_addr
+ REG_ISR
);
1043 /* set MAC Address */
1044 value
= (((u32
) hw
->mac_addr
[2]) << 24) |
1045 (((u32
) hw
->mac_addr
[3]) << 16) |
1046 (((u32
) hw
->mac_addr
[4]) << 8) |
1047 (((u32
) hw
->mac_addr
[5]));
1048 iowrite32(value
, hw
->hw_addr
+ REG_MAC_STA_ADDR
);
1049 value
= (((u32
) hw
->mac_addr
[0]) << 8) | (((u32
) hw
->mac_addr
[1]));
1050 iowrite32(value
, hw
->hw_addr
+ (REG_MAC_STA_ADDR
+ 4));
1054 /* HI base address */
1055 iowrite32((u32
) ((adapter
->tpd_ring
.dma
& 0xffffffff00000000ULL
) >> 32),
1056 hw
->hw_addr
+ REG_DESC_BASE_ADDR_HI
);
1057 /* LO base address */
1058 iowrite32((u32
) (adapter
->rfd_ring
.dma
& 0x00000000ffffffffULL
),
1059 hw
->hw_addr
+ REG_DESC_RFD_ADDR_LO
);
1060 iowrite32((u32
) (adapter
->rrd_ring
.dma
& 0x00000000ffffffffULL
),
1061 hw
->hw_addr
+ REG_DESC_RRD_ADDR_LO
);
1062 iowrite32((u32
) (adapter
->tpd_ring
.dma
& 0x00000000ffffffffULL
),
1063 hw
->hw_addr
+ REG_DESC_TPD_ADDR_LO
);
1064 iowrite32((u32
) (adapter
->cmb
.dma
& 0x00000000ffffffffULL
),
1065 hw
->hw_addr
+ REG_DESC_CMB_ADDR_LO
);
1066 iowrite32((u32
) (adapter
->smb
.dma
& 0x00000000ffffffffULL
),
1067 hw
->hw_addr
+ REG_DESC_SMB_ADDR_LO
);
1070 value
= adapter
->rrd_ring
.count
;
1072 value
+= adapter
->rfd_ring
.count
;
1073 iowrite32(value
, hw
->hw_addr
+ REG_DESC_RFD_RRD_RING_SIZE
);
1074 iowrite32(adapter
->tpd_ring
.count
, hw
->hw_addr
+ REG_DESC_TPD_RING_SIZE
);
1077 iowrite32(1, hw
->hw_addr
+ REG_LOAD_PTR
);
1079 /* config Mailbox */
1080 value
= ((atomic_read(&adapter
->tpd_ring
.next_to_use
)
1081 & MB_TPD_PROD_INDX_MASK
) << MB_TPD_PROD_INDX_SHIFT
) |
1082 ((atomic_read(&adapter
->rrd_ring
.next_to_clean
)
1083 & MB_RRD_CONS_INDX_MASK
) << MB_RRD_CONS_INDX_SHIFT
) |
1084 ((atomic_read(&adapter
->rfd_ring
.next_to_use
)
1085 & MB_RFD_PROD_INDX_MASK
) << MB_RFD_PROD_INDX_SHIFT
);
1086 iowrite32(value
, hw
->hw_addr
+ REG_MAILBOX
);
1088 /* config IPG/IFG */
1089 value
= (((u32
) hw
->ipgt
& MAC_IPG_IFG_IPGT_MASK
)
1090 << MAC_IPG_IFG_IPGT_SHIFT
) |
1091 (((u32
) hw
->min_ifg
& MAC_IPG_IFG_MIFG_MASK
)
1092 << MAC_IPG_IFG_MIFG_SHIFT
) |
1093 (((u32
) hw
->ipgr1
& MAC_IPG_IFG_IPGR1_MASK
)
1094 << MAC_IPG_IFG_IPGR1_SHIFT
) |
1095 (((u32
) hw
->ipgr2
& MAC_IPG_IFG_IPGR2_MASK
)
1096 << MAC_IPG_IFG_IPGR2_SHIFT
);
1097 iowrite32(value
, hw
->hw_addr
+ REG_MAC_IPG_IFG
);
1099 /* config Half-Duplex Control */
1100 value
= ((u32
) hw
->lcol
& MAC_HALF_DUPLX_CTRL_LCOL_MASK
) |
1101 (((u32
) hw
->max_retry
& MAC_HALF_DUPLX_CTRL_RETRY_MASK
)
1102 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT
) |
1103 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN
|
1104 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT
) |
1105 (((u32
) hw
->jam_ipg
& MAC_HALF_DUPLX_CTRL_JAMIPG_MASK
)
1106 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT
);
1107 iowrite32(value
, hw
->hw_addr
+ REG_MAC_HALF_DUPLX_CTRL
);
1109 /* set Interrupt Moderator Timer */
1110 iowrite16(adapter
->imt
, hw
->hw_addr
+ REG_IRQ_MODU_TIMER_INIT
);
1111 iowrite32(MASTER_CTRL_ITIMER_EN
, hw
->hw_addr
+ REG_MASTER_CTRL
);
1113 /* set Interrupt Clear Timer */
1114 iowrite16(adapter
->ict
, hw
->hw_addr
+ REG_CMBDISDMA_TIMER
);
1116 /* set MTU, 4 : VLAN */
1117 iowrite32(hw
->max_frame_size
+ 4, hw
->hw_addr
+ REG_MTU
);
1119 /* jumbo size & rrd retirement timer */
1120 value
= (((u32
) hw
->rx_jumbo_th
& RXQ_JMBOSZ_TH_MASK
)
1121 << RXQ_JMBOSZ_TH_SHIFT
) |
1122 (((u32
) hw
->rx_jumbo_lkah
& RXQ_JMBO_LKAH_MASK
)
1123 << RXQ_JMBO_LKAH_SHIFT
) |
1124 (((u32
) hw
->rrd_ret_timer
& RXQ_RRD_TIMER_MASK
)
1125 << RXQ_RRD_TIMER_SHIFT
);
1126 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_JMBOSZ_RRDTIM
);
1129 switch (hw
->dev_rev
) {
1134 set_flow_ctrl_old(adapter
);
1137 set_flow_ctrl_new(hw
);
1142 value
= (((u32
) hw
->tpd_burst
& TXQ_CTRL_TPD_BURST_NUM_MASK
)
1143 << TXQ_CTRL_TPD_BURST_NUM_SHIFT
) |
1144 (((u32
) hw
->txf_burst
& TXQ_CTRL_TXF_BURST_NUM_MASK
)
1145 << TXQ_CTRL_TXF_BURST_NUM_SHIFT
) |
1146 (((u32
) hw
->tpd_fetch_th
& TXQ_CTRL_TPD_FETCH_TH_MASK
)
1147 << TXQ_CTRL_TPD_FETCH_TH_SHIFT
) | TXQ_CTRL_ENH_MODE
| TXQ_CTRL_EN
;
1148 iowrite32(value
, hw
->hw_addr
+ REG_TXQ_CTRL
);
1150 /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
1151 value
= (((u32
) hw
->tx_jumbo_task_th
& TX_JUMBO_TASK_TH_MASK
)
1152 << TX_JUMBO_TASK_TH_SHIFT
) |
1153 (((u32
) hw
->tpd_fetch_gap
& TX_TPD_MIN_IPG_MASK
)
1154 << TX_TPD_MIN_IPG_SHIFT
);
1155 iowrite32(value
, hw
->hw_addr
+ REG_TX_JUMBO_TASK_TH_TPD_IPG
);
1158 value
= (((u32
) hw
->rfd_burst
& RXQ_CTRL_RFD_BURST_NUM_MASK
)
1159 << RXQ_CTRL_RFD_BURST_NUM_SHIFT
) |
1160 (((u32
) hw
->rrd_burst
& RXQ_CTRL_RRD_BURST_THRESH_MASK
)
1161 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT
) |
1162 (((u32
) hw
->rfd_fetch_gap
& RXQ_CTRL_RFD_PREF_MIN_IPG_MASK
)
1163 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT
) |
1164 RXQ_CTRL_CUT_THRU_EN
| RXQ_CTRL_EN
;
1165 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_CTRL
);
1167 /* config DMA Engine */
1168 value
= ((((u32
) hw
->dmar_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
1169 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
) |
1170 ((((u32
) hw
->dmaw_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
1171 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
) |
1172 DMA_CTRL_DMAR_EN
| DMA_CTRL_DMAW_EN
;
1173 value
|= (u32
) hw
->dma_ord
;
1174 if (atl1_rcb_128
== hw
->rcb_value
)
1175 value
|= DMA_CTRL_RCB_VALUE
;
1176 iowrite32(value
, hw
->hw_addr
+ REG_DMA_CTRL
);
1178 /* config CMB / SMB */
1179 value
= hw
->cmb_rrd
| ((u32
) hw
->cmb_tpd
<< 16);
1180 iowrite32(value
, hw
->hw_addr
+ REG_CMB_WRITE_TH
);
1181 value
= hw
->cmb_rx_timer
| ((u32
) hw
->cmb_tx_timer
<< 16);
1182 iowrite32(value
, hw
->hw_addr
+ REG_CMB_WRITE_TIMER
);
1183 iowrite32(hw
->smb_timer
, hw
->hw_addr
+ REG_SMB_TIMER
);
1185 /* --- enable CMB / SMB */
1186 value
= CSMB_CTRL_CMB_EN
| CSMB_CTRL_SMB_EN
;
1187 iowrite32(value
, hw
->hw_addr
+ REG_CSMB_CTRL
);
1189 value
= ioread32(adapter
->hw
.hw_addr
+ REG_ISR
);
1190 if (unlikely((value
& ISR_PHY_LINKDOWN
) != 0))
1191 value
= 1; /* config failed */
1195 /* clear all interrupt status */
1196 iowrite32(0x3fffffff, adapter
->hw
.hw_addr
+ REG_ISR
);
1197 iowrite32(0, adapter
->hw
.hw_addr
+ REG_ISR
);
1202 * atl1_irq_disable - Mask off interrupt generation on the NIC
1203 * @adapter: board private structure
1205 static void atl1_irq_disable(struct atl1_adapter
*adapter
)
1207 atomic_inc(&adapter
->irq_sem
);
1208 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
1209 ioread32(adapter
->hw
.hw_addr
+ REG_IMR
);
1210 synchronize_irq(adapter
->pdev
->irq
);
1213 static void atl1_vlan_rx_register(struct net_device
*netdev
,
1214 struct vlan_group
*grp
)
1216 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1217 unsigned long flags
;
1220 spin_lock_irqsave(&adapter
->lock
, flags
);
1221 /* atl1_irq_disable(adapter); */
1222 adapter
->vlgrp
= grp
;
1225 /* enable VLAN tag insert/strip */
1226 ctrl
= ioread32(adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1227 ctrl
|= MAC_CTRL_RMV_VLAN
;
1228 iowrite32(ctrl
, adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1230 /* disable VLAN tag insert/strip */
1231 ctrl
= ioread32(adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1232 ctrl
&= ~MAC_CTRL_RMV_VLAN
;
1233 iowrite32(ctrl
, adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1236 /* atl1_irq_enable(adapter); */
1237 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1240 /* FIXME: justify or remove -- CHS */
1241 static void atl1_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
1243 /* We don't do Vlan filtering */
1247 /* FIXME: this looks wrong too -- CHS */
1248 static void atl1_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
1250 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1251 unsigned long flags
;
1253 spin_lock_irqsave(&adapter
->lock
, flags
);
1254 /* atl1_irq_disable(adapter); */
1255 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
1256 /* atl1_irq_enable(adapter); */
1257 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1258 /* We don't do Vlan filtering */
1262 static void atl1_restore_vlan(struct atl1_adapter
*adapter
)
1264 atl1_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
1265 if (adapter
->vlgrp
) {
1267 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
1268 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
1270 atl1_vlan_rx_add_vid(adapter
->netdev
, vid
);
1275 static u16
tpd_avail(struct atl1_tpd_ring
*tpd_ring
)
1277 u16 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1278 u16 next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1279 return ((next_to_clean
>
1280 next_to_use
) ? next_to_clean
- next_to_use
-
1281 1 : tpd_ring
->count
+ next_to_clean
- next_to_use
- 1);
1284 static int atl1_tso(struct atl1_adapter
*adapter
, struct sk_buff
*skb
,
1285 struct tso_param
*tso
)
1287 /* We enter this function holding a spinlock. */
1291 if (skb_shinfo(skb
)->gso_size
) {
1292 if (skb_header_cloned(skb
)) {
1293 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
1298 if (skb
->protocol
== ntohs(ETH_P_IP
)) {
1299 skb
->nh
.iph
->tot_len
= 0;
1300 skb
->nh
.iph
->check
= 0;
1302 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
1303 skb
->nh
.iph
->daddr
, 0,
1305 ipofst
= skb
->nh
.raw
- skb
->data
;
1306 if (ipofst
!= ENET_HEADER_SIZE
) /* 802.3 frame */
1307 tso
->tsopl
|= 1 << TSO_PARAM_ETHTYPE_SHIFT
;
1309 tso
->tsopl
|= (skb
->nh
.iph
->ihl
&
1310 CSUM_PARAM_IPHL_MASK
) << CSUM_PARAM_IPHL_SHIFT
;
1311 tso
->tsopl
|= ((skb
->h
.th
->doff
<< 2) &
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
->h
.raw
- skb
->data
;
1331 css
= (skb
->h
.raw
+ skb
->csum_offset
) - skb
->data
;
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 */
1374 ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
1375 buffer_info
->length
= proto_hdr_len
;
1376 page
= virt_to_page(skb
->data
);
1377 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
1378 buffer_info
->dma
= pci_map_page(adapter
->pdev
, page
,
1379 offset
, proto_hdr_len
,
1382 if (++tpd_next_to_use
== tpd_ring
->count
)
1383 tpd_next_to_use
= 0;
1385 if (first_buf_len
> proto_hdr_len
) {
1386 len12
= first_buf_len
- proto_hdr_len
;
1387 m
= (len12
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1388 for (i
= 0; i
< m
; i
++) {
1390 &tpd_ring
->buffer_info
[tpd_next_to_use
];
1391 buffer_info
->skb
= NULL
;
1392 buffer_info
->length
=
1394 len12
) ? MAX_TX_BUF_LEN
: len12
;
1395 len12
-= buffer_info
->length
;
1396 page
= virt_to_page(skb
->data
+
1398 i
* MAX_TX_BUF_LEN
));
1399 offset
= (unsigned long)(skb
->data
+
1401 i
* MAX_TX_BUF_LEN
)) &
1404 pci_map_page(adapter
->pdev
, page
, offset
,
1405 buffer_info
->length
,
1407 if (++tpd_next_to_use
== tpd_ring
->count
)
1408 tpd_next_to_use
= 0;
1413 buffer_info
->length
= first_buf_len
;
1414 page
= virt_to_page(skb
->data
);
1415 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
1416 buffer_info
->dma
= pci_map_page(adapter
->pdev
, page
,
1417 offset
, first_buf_len
,
1419 if (++tpd_next_to_use
== tpd_ring
->count
)
1420 tpd_next_to_use
= 0;
1423 for (f
= 0; f
< nr_frags
; f
++) {
1424 struct skb_frag_struct
*frag
;
1427 frag
= &skb_shinfo(skb
)->frags
[f
];
1430 m
= (lenf
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1431 for (i
= 0; i
< m
; i
++) {
1432 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1433 if (unlikely(buffer_info
->skb
))
1435 buffer_info
->skb
= NULL
;
1436 buffer_info
->length
=
1437 (lenf
> MAX_TX_BUF_LEN
) ? MAX_TX_BUF_LEN
: lenf
;
1438 lenf
-= buffer_info
->length
;
1440 pci_map_page(adapter
->pdev
, frag
->page
,
1441 frag
->page_offset
+ i
* MAX_TX_BUF_LEN
,
1442 buffer_info
->length
, PCI_DMA_TODEVICE
);
1444 if (++tpd_next_to_use
== tpd_ring
->count
)
1445 tpd_next_to_use
= 0;
1449 /* last tpd's buffer-info */
1450 buffer_info
->skb
= skb
;
1453 static void atl1_tx_queue(struct atl1_adapter
*adapter
, int count
,
1454 union tpd_descr
*descr
)
1456 /* We enter this function holding a spinlock. */
1457 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1460 struct atl1_buffer
*buffer_info
;
1461 struct tx_packet_desc
*tpd
;
1462 u16 tpd_next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1464 for (j
= 0; j
< count
; j
++) {
1465 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1466 tpd
= ATL1_TPD_DESC(&adapter
->tpd_ring
, tpd_next_to_use
);
1467 tpd
->desc
.csum
.csumpu
= descr
->csum
.csumpu
;
1468 tpd
->desc
.csum
.csumpl
= descr
->csum
.csumpl
;
1469 tpd
->desc
.tso
.tsopu
= descr
->tso
.tsopu
;
1470 tpd
->desc
.tso
.tsopl
= descr
->tso
.tsopl
;
1471 tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1472 tpd
->desc
.data
= descr
->data
;
1473 tpd
->desc
.csum
.csumpu
|= (cpu_to_le16(buffer_info
->length
) &
1474 CSUM_PARAM_BUFLEN_MASK
) << CSUM_PARAM_BUFLEN_SHIFT
;
1476 val
= (descr
->tso
.tsopl
>> TSO_PARAM_SEGMENT_SHIFT
) &
1477 TSO_PARAM_SEGMENT_MASK
;
1479 tpd
->desc
.tso
.tsopl
|= 1 << TSO_PARAM_HDRFLAG_SHIFT
;
1481 if (j
== (count
- 1))
1482 tpd
->desc
.csum
.csumpl
|= 1 << CSUM_PARAM_EOP_SHIFT
;
1484 if (++tpd_next_to_use
== tpd_ring
->count
)
1485 tpd_next_to_use
= 0;
1488 * Force memory writes to complete before letting h/w
1489 * know there are new descriptors to fetch. (Only
1490 * applicable for weak-ordered memory model archs,
1495 atomic_set(&tpd_ring
->next_to_use
, (int)tpd_next_to_use
);
1498 static void atl1_update_mailbox(struct atl1_adapter
*adapter
)
1500 unsigned long flags
;
1501 u32 tpd_next_to_use
;
1502 u32 rfd_next_to_use
;
1503 u32 rrd_next_to_clean
;
1506 spin_lock_irqsave(&adapter
->mb_lock
, flags
);
1508 tpd_next_to_use
= atomic_read(&adapter
->tpd_ring
.next_to_use
);
1509 rfd_next_to_use
= atomic_read(&adapter
->rfd_ring
.next_to_use
);
1510 rrd_next_to_clean
= atomic_read(&adapter
->rrd_ring
.next_to_clean
);
1512 value
= ((rfd_next_to_use
& MB_RFD_PROD_INDX_MASK
) <<
1513 MB_RFD_PROD_INDX_SHIFT
) |
1514 ((rrd_next_to_clean
& MB_RRD_CONS_INDX_MASK
) <<
1515 MB_RRD_CONS_INDX_SHIFT
) |
1516 ((tpd_next_to_use
& MB_TPD_PROD_INDX_MASK
) <<
1517 MB_TPD_PROD_INDX_SHIFT
);
1518 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_MAILBOX
);
1520 spin_unlock_irqrestore(&adapter
->mb_lock
, flags
);
1523 static int atl1_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
1525 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1531 union tpd_descr param
;
1534 unsigned long flags
;
1535 unsigned int nr_frags
= 0;
1536 unsigned int mss
= 0;
1538 unsigned int proto_hdr_len
;
1540 len
-= skb
->data_len
;
1542 if (unlikely(skb
->len
== 0)) {
1543 dev_kfree_skb_any(skb
);
1544 return NETDEV_TX_OK
;
1548 param
.tso
.tsopu
= 0;
1549 param
.tso
.tsopl
= 0;
1550 param
.csum
.csumpu
= 0;
1551 param
.csum
.csumpl
= 0;
1553 /* nr_frags will be nonzero if we're doing scatter/gather (SG) */
1554 nr_frags
= skb_shinfo(skb
)->nr_frags
;
1555 for (f
= 0; f
< nr_frags
; f
++) {
1556 frag_size
= skb_shinfo(skb
)->frags
[f
].size
;
1559 (frag_size
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1562 /* mss will be nonzero if we're doing segment offload (TSO/GSO) */
1563 mss
= skb_shinfo(skb
)->gso_size
;
1565 if (skb
->protocol
== htons(ETH_P_IP
)) {
1566 proto_hdr_len
= ((skb
->h
.raw
- skb
->data
) +
1567 (skb
->h
.th
->doff
<< 2));
1568 if (unlikely(proto_hdr_len
> len
)) {
1569 dev_kfree_skb_any(skb
);
1570 return NETDEV_TX_OK
;
1572 /* need additional TPD ? */
1573 if (proto_hdr_len
!= len
)
1574 count
+= (len
- proto_hdr_len
+
1575 MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1579 local_irq_save(flags
);
1580 if (!spin_trylock(&adapter
->lock
)) {
1581 /* Can't get lock - tell upper layer to requeue */
1582 local_irq_restore(flags
);
1583 printk(KERN_DEBUG
"%s: TX locked\n", atl1_driver_name
);
1584 return NETDEV_TX_LOCKED
;
1587 if (tpd_avail(&adapter
->tpd_ring
) < count
) {
1588 /* not enough descriptors */
1589 netif_stop_queue(netdev
);
1590 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1591 printk(KERN_DEBUG
"%s: TX busy\n", atl1_driver_name
);
1592 return NETDEV_TX_BUSY
;
1597 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
1598 vlan_tag
= vlan_tx_tag_get(skb
);
1599 vlan_tag
= (vlan_tag
<< 4) | (vlan_tag
>> 13) |
1600 ((vlan_tag
>> 9) & 0x8);
1601 param
.csum
.csumpl
|= 1 << CSUM_PARAM_INSVLAG_SHIFT
;
1602 param
.csum
.csumpu
|= (vlan_tag
& CSUM_PARAM_VALANTAG_MASK
) <<
1603 CSUM_PARAM_VALAN_SHIFT
;
1606 tso
= atl1_tso(adapter
, skb
, ¶m
.tso
);
1608 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1609 dev_kfree_skb_any(skb
);
1610 return NETDEV_TX_OK
;
1614 ret_val
= atl1_tx_csum(adapter
, skb
, ¶m
.csum
);
1616 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1617 dev_kfree_skb_any(skb
);
1618 return NETDEV_TX_OK
;
1622 val
= (param
.csum
.csumpl
>> CSUM_PARAM_SEGMENT_SHIFT
) &
1623 CSUM_PARAM_SEGMENT_MASK
;
1624 atl1_tx_map(adapter
, skb
, 1 == val
);
1625 atl1_tx_queue(adapter
, count
, ¶m
);
1626 netdev
->trans_start
= jiffies
;
1627 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1628 atl1_update_mailbox(adapter
);
1629 return NETDEV_TX_OK
;
1633 * atl1_get_stats - Get System Network Statistics
1634 * @netdev: network interface device structure
1636 * Returns the address of the device statistics structure.
1637 * The statistics are actually updated from the timer callback.
1639 static struct net_device_stats
*atl1_get_stats(struct net_device
*netdev
)
1641 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1642 return &adapter
->net_stats
;
1646 * atl1_clean_rx_ring - Free RFD Buffers
1647 * @adapter: board private structure
1649 static void atl1_clean_rx_ring(struct atl1_adapter
*adapter
)
1651 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1652 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1653 struct atl1_buffer
*buffer_info
;
1654 struct pci_dev
*pdev
= adapter
->pdev
;
1658 /* Free all the Rx ring sk_buffs */
1659 for (i
= 0; i
< rfd_ring
->count
; i
++) {
1660 buffer_info
= &rfd_ring
->buffer_info
[i
];
1661 if (buffer_info
->dma
) {
1662 pci_unmap_page(pdev
,
1664 buffer_info
->length
,
1665 PCI_DMA_FROMDEVICE
);
1666 buffer_info
->dma
= 0;
1668 if (buffer_info
->skb
) {
1669 dev_kfree_skb(buffer_info
->skb
);
1670 buffer_info
->skb
= NULL
;
1674 size
= sizeof(struct atl1_buffer
) * rfd_ring
->count
;
1675 memset(rfd_ring
->buffer_info
, 0, size
);
1677 /* Zero out the descriptor ring */
1678 memset(rfd_ring
->desc
, 0, rfd_ring
->size
);
1680 rfd_ring
->next_to_clean
= 0;
1681 atomic_set(&rfd_ring
->next_to_use
, 0);
1683 rrd_ring
->next_to_use
= 0;
1684 atomic_set(&rrd_ring
->next_to_clean
, 0);
1688 * atl1_clean_tx_ring - Free Tx Buffers
1689 * @adapter: board private structure
1691 static void atl1_clean_tx_ring(struct atl1_adapter
*adapter
)
1693 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1694 struct atl1_buffer
*buffer_info
;
1695 struct pci_dev
*pdev
= adapter
->pdev
;
1699 /* Free all the Tx ring sk_buffs */
1700 for (i
= 0; i
< tpd_ring
->count
; i
++) {
1701 buffer_info
= &tpd_ring
->buffer_info
[i
];
1702 if (buffer_info
->dma
) {
1703 pci_unmap_page(pdev
, buffer_info
->dma
,
1704 buffer_info
->length
, PCI_DMA_TODEVICE
);
1705 buffer_info
->dma
= 0;
1709 for (i
= 0; i
< tpd_ring
->count
; i
++) {
1710 buffer_info
= &tpd_ring
->buffer_info
[i
];
1711 if (buffer_info
->skb
) {
1712 dev_kfree_skb_any(buffer_info
->skb
);
1713 buffer_info
->skb
= NULL
;
1717 size
= sizeof(struct atl1_buffer
) * tpd_ring
->count
;
1718 memset(tpd_ring
->buffer_info
, 0, size
);
1720 /* Zero out the descriptor ring */
1721 memset(tpd_ring
->desc
, 0, tpd_ring
->size
);
1723 atomic_set(&tpd_ring
->next_to_use
, 0);
1724 atomic_set(&tpd_ring
->next_to_clean
, 0);
1728 * atl1_free_ring_resources - Free Tx / RX descriptor Resources
1729 * @adapter: board private structure
1731 * Free all transmit software resources
1733 void atl1_free_ring_resources(struct atl1_adapter
*adapter
)
1735 struct pci_dev
*pdev
= adapter
->pdev
;
1736 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1737 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1738 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1739 struct atl1_ring_header
*ring_header
= &adapter
->ring_header
;
1741 atl1_clean_tx_ring(adapter
);
1742 atl1_clean_rx_ring(adapter
);
1744 kfree(tpd_ring
->buffer_info
);
1745 pci_free_consistent(pdev
, ring_header
->size
, ring_header
->desc
,
1748 tpd_ring
->buffer_info
= NULL
;
1749 tpd_ring
->desc
= NULL
;
1752 rfd_ring
->buffer_info
= NULL
;
1753 rfd_ring
->desc
= NULL
;
1756 rrd_ring
->desc
= NULL
;
1760 s32
atl1_up(struct atl1_adapter
*adapter
)
1762 struct net_device
*netdev
= adapter
->netdev
;
1764 int irq_flags
= IRQF_SAMPLE_RANDOM
;
1766 /* hardware has been reset, we need to reload some things */
1767 atl1_set_multi(netdev
);
1768 atl1_restore_vlan(adapter
);
1769 err
= atl1_alloc_rx_buffers(adapter
);
1770 if (unlikely(!err
)) /* no RX BUFFER allocated */
1773 if (unlikely(atl1_configure(adapter
))) {
1778 err
= pci_enable_msi(adapter
->pdev
);
1780 dev_info(&adapter
->pdev
->dev
,
1781 "Unable to enable MSI: %d\n", err
);
1782 irq_flags
|= IRQF_SHARED
;
1785 err
= request_irq(adapter
->pdev
->irq
, &atl1_intr
, irq_flags
,
1786 netdev
->name
, netdev
);
1790 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1791 atl1_irq_enable(adapter
);
1792 atl1_check_link(adapter
);
1795 /* FIXME: unreachable code! -- CHS */
1796 /* free irq disable any interrupt */
1797 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
1798 free_irq(adapter
->pdev
->irq
, netdev
);
1801 pci_disable_msi(adapter
->pdev
);
1802 /* free rx_buffers */
1803 atl1_clean_rx_ring(adapter
);
1807 void atl1_down(struct atl1_adapter
*adapter
)
1809 struct net_device
*netdev
= adapter
->netdev
;
1811 del_timer_sync(&adapter
->watchdog_timer
);
1812 del_timer_sync(&adapter
->phy_config_timer
);
1813 adapter
->phy_timer_pending
= false;
1815 atl1_irq_disable(adapter
);
1816 free_irq(adapter
->pdev
->irq
, netdev
);
1817 pci_disable_msi(adapter
->pdev
);
1818 atl1_reset_hw(&adapter
->hw
);
1819 adapter
->cmb
.cmb
->int_stats
= 0;
1821 adapter
->link_speed
= SPEED_0
;
1822 adapter
->link_duplex
= -1;
1823 netif_carrier_off(netdev
);
1824 netif_stop_queue(netdev
);
1826 atl1_clean_tx_ring(adapter
);
1827 atl1_clean_rx_ring(adapter
);
1831 * atl1_change_mtu - Change the Maximum Transfer Unit
1832 * @netdev: network interface device structure
1833 * @new_mtu: new value for maximum frame size
1835 * Returns 0 on success, negative on failure
1837 static int atl1_change_mtu(struct net_device
*netdev
, int new_mtu
)
1839 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1840 int old_mtu
= netdev
->mtu
;
1841 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1843 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
1844 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
1845 printk(KERN_WARNING
"%s: invalid MTU setting\n",
1850 adapter
->hw
.max_frame_size
= max_frame
;
1851 adapter
->hw
.tx_jumbo_task_th
= (max_frame
+ 7) >> 3;
1852 adapter
->rx_buffer_len
= (max_frame
+ 7) & ~7;
1853 adapter
->hw
.rx_jumbo_th
= adapter
->rx_buffer_len
/ 8;
1855 netdev
->mtu
= new_mtu
;
1856 if ((old_mtu
!= new_mtu
) && netif_running(netdev
)) {
1865 * atl1_set_mac - Change the Ethernet Address of the NIC
1866 * @netdev: network interface device structure
1867 * @p: pointer to an address structure
1869 * Returns 0 on success, negative on failure
1871 static int atl1_set_mac(struct net_device
*netdev
, void *p
)
1873 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1874 struct sockaddr
*addr
= p
;
1876 if (netif_running(netdev
))
1879 if (!is_valid_ether_addr(addr
->sa_data
))
1880 return -EADDRNOTAVAIL
;
1882 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
1883 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
1885 atl1_set_mac_addr(&adapter
->hw
);
1890 * atl1_watchdog - Timer Call-back
1891 * @data: pointer to netdev cast into an unsigned long
1893 static void atl1_watchdog(unsigned long data
)
1895 struct atl1_adapter
*adapter
= (struct atl1_adapter
*)data
;
1897 /* Reset the timer */
1898 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1901 static int mdio_read(struct net_device
*netdev
, int phy_id
, int reg_num
)
1903 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1906 atl1_read_phy_reg(&adapter
->hw
, reg_num
& 0x1f, &result
);
1911 static void mdio_write(struct net_device
*netdev
, int phy_id
, int reg_num
, int val
)
1913 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1915 atl1_write_phy_reg(&adapter
->hw
, reg_num
, val
);
1924 static int atl1_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
1926 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1927 unsigned long flags
;
1930 if (!netif_running(netdev
))
1933 spin_lock_irqsave(&adapter
->lock
, flags
);
1934 retval
= generic_mii_ioctl(&adapter
->mii
, if_mii(ifr
), cmd
, NULL
);
1935 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1946 static int atl1_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
1952 return atl1_mii_ioctl(netdev
, ifr
, cmd
);
1959 * atl1_tx_timeout - Respond to a Tx Hang
1960 * @netdev: network interface device structure
1962 static void atl1_tx_timeout(struct net_device
*netdev
)
1964 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1965 /* Do the reset outside of interrupt context */
1966 schedule_work(&adapter
->tx_timeout_task
);
1970 * atl1_phy_config - Timer Call-back
1971 * @data: pointer to netdev cast into an unsigned long
1973 static void atl1_phy_config(unsigned long data
)
1975 struct atl1_adapter
*adapter
= (struct atl1_adapter
*)data
;
1976 struct atl1_hw
*hw
= &adapter
->hw
;
1977 unsigned long flags
;
1979 spin_lock_irqsave(&adapter
->lock
, flags
);
1980 adapter
->phy_timer_pending
= false;
1981 atl1_write_phy_reg(hw
, MII_ADVERTISE
, hw
->mii_autoneg_adv_reg
);
1982 atl1_write_phy_reg(hw
, MII_AT001_CR
, hw
->mii_1000t_ctrl_reg
);
1983 atl1_write_phy_reg(hw
, MII_BMCR
, MII_CR_RESET
| MII_CR_AUTO_NEG_EN
);
1984 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1987 int atl1_reset(struct atl1_adapter
*adapter
)
1991 ret
= atl1_reset_hw(&adapter
->hw
);
1992 if (ret
!= ATL1_SUCCESS
)
1994 return atl1_init_hw(&adapter
->hw
);
1998 * atl1_open - Called when a network interface is made active
1999 * @netdev: network interface device structure
2001 * Returns 0 on success, negative value on failure
2003 * The open entry point is called when a network interface is made
2004 * active by the system (IFF_UP). At this point all resources needed
2005 * for transmit and receive operations are allocated, the interrupt
2006 * handler is registered with the OS, the watchdog timer is started,
2007 * and the stack is notified that the interface is ready.
2009 static int atl1_open(struct net_device
*netdev
)
2011 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2014 /* allocate transmit descriptors */
2015 err
= atl1_setup_ring_resources(adapter
);
2019 err
= atl1_up(adapter
);
2026 atl1_reset(adapter
);
2031 * atl1_close - Disables a network interface
2032 * @netdev: network interface device structure
2034 * Returns 0, this is not allowed to fail
2036 * The close entry point is called when an interface is de-activated
2037 * by the OS. The hardware is still under the drivers control, but
2038 * needs to be disabled. A global MAC reset is issued to stop the
2039 * hardware, and all transmit and receive resources are freed.
2041 static int atl1_close(struct net_device
*netdev
)
2043 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2045 atl1_free_ring_resources(adapter
);
2050 * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
2051 * will assert. We do soft reset <0x1400=1> according
2052 * with the SPEC. BUT, it seemes that PCIE or DMA
2053 * state-machine will not be reset. DMAR_TO_INT will
2054 * assert again and again.
2056 static void atl1_tx_timeout_task(struct work_struct
*work
)
2058 struct atl1_adapter
*adapter
=
2059 container_of(work
, struct atl1_adapter
, tx_timeout_task
);
2060 struct net_device
*netdev
= adapter
->netdev
;
2062 netif_device_detach(netdev
);
2065 netif_device_attach(netdev
);
2069 * atl1_link_chg_task - deal with link change event Out of interrupt context
2071 static void atl1_link_chg_task(struct work_struct
*work
)
2073 struct atl1_adapter
*adapter
=
2074 container_of(work
, struct atl1_adapter
, link_chg_task
);
2075 unsigned long flags
;
2077 spin_lock_irqsave(&adapter
->lock
, flags
);
2078 atl1_check_link(adapter
);
2079 spin_unlock_irqrestore(&adapter
->lock
, flags
);
2083 * atl1_pcie_patch - Patch for PCIE module
2085 static void atl1_pcie_patch(struct atl1_adapter
*adapter
)
2089 iowrite32(value
, adapter
->hw
.hw_addr
+ 0x12FC);
2090 /* pcie flow control mode change */
2091 value
= ioread32(adapter
->hw
.hw_addr
+ 0x1008);
2093 iowrite32(value
, adapter
->hw
.hw_addr
+ 0x1008);
2097 * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
2098 * on PCI Command register is disable.
2099 * The function enable this bit.
2100 * Brackett, 2006/03/15
2102 static void atl1_via_workaround(struct atl1_adapter
*adapter
)
2104 unsigned long value
;
2106 value
= ioread16(adapter
->hw
.hw_addr
+ PCI_COMMAND
);
2107 if (value
& PCI_COMMAND_INTX_DISABLE
)
2108 value
&= ~PCI_COMMAND_INTX_DISABLE
;
2109 iowrite32(value
, adapter
->hw
.hw_addr
+ PCI_COMMAND
);
2113 * atl1_probe - Device Initialization Routine
2114 * @pdev: PCI device information struct
2115 * @ent: entry in atl1_pci_tbl
2117 * Returns 0 on success, negative on failure
2119 * atl1_probe initializes an adapter identified by a pci_dev structure.
2120 * The OS initialization, configuring of the adapter private structure,
2121 * and a hardware reset occur.
2123 static int __devinit
atl1_probe(struct pci_dev
*pdev
,
2124 const struct pci_device_id
*ent
)
2126 struct net_device
*netdev
;
2127 struct atl1_adapter
*adapter
;
2128 static int cards_found
= 0;
2129 bool pci_using_64
= true;
2132 err
= pci_enable_device(pdev
);
2136 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
2138 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
2141 "%s: no usable DMA configuration, aborting\n",
2145 pci_using_64
= false;
2147 /* Mark all PCI regions associated with PCI device
2148 * pdev as being reserved by owner atl1_driver_name
2150 err
= pci_request_regions(pdev
, atl1_driver_name
);
2152 goto err_request_regions
;
2154 /* Enables bus-mastering on the device and calls
2155 * pcibios_set_master to do the needed arch specific settings
2157 pci_set_master(pdev
);
2159 netdev
= alloc_etherdev(sizeof(struct atl1_adapter
));
2162 goto err_alloc_etherdev
;
2164 SET_MODULE_OWNER(netdev
);
2165 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2167 pci_set_drvdata(pdev
, netdev
);
2168 adapter
= netdev_priv(netdev
);
2169 adapter
->netdev
= netdev
;
2170 adapter
->pdev
= pdev
;
2171 adapter
->hw
.back
= adapter
;
2173 adapter
->hw
.hw_addr
= pci_iomap(pdev
, 0, 0);
2174 if (!adapter
->hw
.hw_addr
) {
2178 /* get device revision number */
2179 adapter
->hw
.dev_rev
= ioread16(adapter
->hw
.hw_addr
+ (REG_MASTER_CTRL
+ 2));
2181 /* set default ring resource counts */
2182 adapter
->rfd_ring
.count
= adapter
->rrd_ring
.count
= ATL1_DEFAULT_RFD
;
2183 adapter
->tpd_ring
.count
= ATL1_DEFAULT_TPD
;
2185 adapter
->mii
.dev
= netdev
;
2186 adapter
->mii
.mdio_read
= mdio_read
;
2187 adapter
->mii
.mdio_write
= mdio_write
;
2188 adapter
->mii
.phy_id_mask
= 0x1f;
2189 adapter
->mii
.reg_num_mask
= 0x1f;
2191 netdev
->open
= &atl1_open
;
2192 netdev
->stop
= &atl1_close
;
2193 netdev
->hard_start_xmit
= &atl1_xmit_frame
;
2194 netdev
->get_stats
= &atl1_get_stats
;
2195 netdev
->set_multicast_list
= &atl1_set_multi
;
2196 netdev
->set_mac_address
= &atl1_set_mac
;
2197 netdev
->change_mtu
= &atl1_change_mtu
;
2198 netdev
->do_ioctl
= &atl1_ioctl
;
2199 netdev
->tx_timeout
= &atl1_tx_timeout
;
2200 netdev
->watchdog_timeo
= 5 * HZ
;
2201 netdev
->vlan_rx_register
= atl1_vlan_rx_register
;
2202 netdev
->vlan_rx_add_vid
= atl1_vlan_rx_add_vid
;
2203 netdev
->vlan_rx_kill_vid
= atl1_vlan_rx_kill_vid
;
2204 netdev
->ethtool_ops
= &atl1_ethtool_ops
;
2205 adapter
->bd_number
= cards_found
;
2206 adapter
->pci_using_64
= pci_using_64
;
2208 /* setup the private structure */
2209 err
= atl1_sw_init(adapter
);
2213 netdev
->features
= NETIF_F_HW_CSUM
;
2214 netdev
->features
|= NETIF_F_SG
;
2215 netdev
->features
|= (NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_RX
);
2218 * FIXME - Until tso performance gets fixed, disable the feature.
2219 * Enable it with ethtool -K if desired.
2221 /* netdev->features |= NETIF_F_TSO; */
2224 netdev
->features
|= NETIF_F_HIGHDMA
;
2226 netdev
->features
|= NETIF_F_LLTX
;
2229 * patch for some L1 of old version,
2230 * the final version of L1 may not need these
2233 /* atl1_pcie_patch(adapter); */
2235 /* really reset GPHY core */
2236 iowrite16(0, adapter
->hw
.hw_addr
+ REG_GPHY_ENABLE
);
2239 * reset the controller to
2240 * put the device in a known good starting state
2242 if (atl1_reset_hw(&adapter
->hw
)) {
2247 /* copy the MAC address out of the EEPROM */
2248 atl1_read_mac_addr(&adapter
->hw
);
2249 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2251 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
2256 atl1_check_options(adapter
);
2258 /* pre-init the MAC, and setup link */
2259 err
= atl1_init_hw(&adapter
->hw
);
2265 atl1_pcie_patch(adapter
);
2266 /* assume we have no link for now */
2267 netif_carrier_off(netdev
);
2268 netif_stop_queue(netdev
);
2270 init_timer(&adapter
->watchdog_timer
);
2271 adapter
->watchdog_timer
.function
= &atl1_watchdog
;
2272 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
2274 init_timer(&adapter
->phy_config_timer
);
2275 adapter
->phy_config_timer
.function
= &atl1_phy_config
;
2276 adapter
->phy_config_timer
.data
= (unsigned long)adapter
;
2277 adapter
->phy_timer_pending
= false;
2279 INIT_WORK(&adapter
->tx_timeout_task
, atl1_tx_timeout_task
);
2281 INIT_WORK(&adapter
->link_chg_task
, atl1_link_chg_task
);
2283 INIT_WORK(&adapter
->pcie_dma_to_rst_task
, atl1_tx_timeout_task
);
2285 err
= register_netdev(netdev
);
2290 atl1_via_workaround(adapter
);
2294 pci_iounmap(pdev
, adapter
->hw
.hw_addr
);
2296 free_netdev(netdev
);
2298 pci_release_regions(pdev
);
2300 err_request_regions
:
2301 pci_disable_device(pdev
);
2306 * atl1_remove - Device Removal Routine
2307 * @pdev: PCI device information struct
2309 * atl1_remove is called by the PCI subsystem to alert the driver
2310 * that it should release a PCI device. The could be caused by a
2311 * Hot-Plug event, or because the driver is going to be removed from
2314 static void __devexit
atl1_remove(struct pci_dev
*pdev
)
2316 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2317 struct atl1_adapter
*adapter
;
2318 /* Device not available. Return. */
2322 adapter
= netdev_priv(netdev
);
2324 /* Some atl1 boards lack persistent storage for their MAC, and get it
2325 * from the BIOS during POST. If we've been messing with the MAC
2326 * address, we need to save the permanent one.
2328 if (memcmp(adapter
->hw
.mac_addr
, adapter
->hw
.perm_mac_addr
, ETH_ALEN
)) {
2329 memcpy(adapter
->hw
.mac_addr
, adapter
->hw
.perm_mac_addr
, ETH_ALEN
);
2330 atl1_set_mac_addr(&adapter
->hw
);
2333 iowrite16(0, adapter
->hw
.hw_addr
+ REG_GPHY_ENABLE
);
2334 unregister_netdev(netdev
);
2335 pci_iounmap(pdev
, adapter
->hw
.hw_addr
);
2336 pci_release_regions(pdev
);
2337 free_netdev(netdev
);
2338 pci_disable_device(pdev
);
2342 static int atl1_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2344 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2345 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2346 struct atl1_hw
*hw
= &adapter
->hw
;
2348 u32 wufc
= adapter
->wol
;
2350 netif_device_detach(netdev
);
2351 if (netif_running(netdev
))
2354 atl1_read_phy_reg(hw
, MII_BMSR
, (u16
*) & ctrl
);
2355 atl1_read_phy_reg(hw
, MII_BMSR
, (u16
*) & ctrl
);
2356 if (ctrl
& BMSR_LSTATUS
)
2357 wufc
&= ~ATL1_WUFC_LNKC
;
2359 /* reduce speed to 10/100M */
2361 atl1_phy_enter_power_saving(hw
);
2362 /* if resume, let driver to re- setup link */
2363 hw
->phy_configured
= false;
2364 atl1_set_mac_addr(hw
);
2365 atl1_set_multi(netdev
);
2368 /* turn on magic packet wol */
2369 if (wufc
& ATL1_WUFC_MAG
)
2370 ctrl
= WOL_MAGIC_EN
| WOL_MAGIC_PME_EN
;
2372 /* turn on Link change WOL */
2373 if (wufc
& ATL1_WUFC_LNKC
)
2374 ctrl
|= (WOL_LINK_CHG_EN
| WOL_LINK_CHG_PME_EN
);
2375 iowrite32(ctrl
, hw
->hw_addr
+ REG_WOL_CTRL
);
2377 /* turn on all-multi mode if wake on multicast is enabled */
2378 ctrl
= ioread32(hw
->hw_addr
+ REG_MAC_CTRL
);
2379 ctrl
&= ~MAC_CTRL_DBG
;
2380 ctrl
&= ~MAC_CTRL_PROMIS_EN
;
2381 if (wufc
& ATL1_WUFC_MC
)
2382 ctrl
|= MAC_CTRL_MC_ALL_EN
;
2384 ctrl
&= ~MAC_CTRL_MC_ALL_EN
;
2386 /* turn on broadcast mode if wake on-BC is enabled */
2387 if (wufc
& ATL1_WUFC_BC
)
2388 ctrl
|= MAC_CTRL_BC_EN
;
2390 ctrl
&= ~MAC_CTRL_BC_EN
;
2393 ctrl
|= MAC_CTRL_RX_EN
;
2394 iowrite32(ctrl
, hw
->hw_addr
+ REG_MAC_CTRL
);
2395 pci_enable_wake(pdev
, PCI_D3hot
, 1);
2396 pci_enable_wake(pdev
, PCI_D3cold
, 1); /* 4 == D3 cold */
2398 iowrite32(0, hw
->hw_addr
+ REG_WOL_CTRL
);
2399 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2400 pci_enable_wake(pdev
, PCI_D3cold
, 0); /* 4 == D3 cold */
2403 pci_save_state(pdev
);
2404 pci_disable_device(pdev
);
2406 pci_set_power_state(pdev
, PCI_D3hot
);
2411 static int atl1_resume(struct pci_dev
*pdev
)
2413 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2414 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2417 pci_set_power_state(pdev
, 0);
2418 pci_restore_state(pdev
);
2420 ret_val
= pci_enable_device(pdev
);
2421 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2422 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2424 iowrite32(0, adapter
->hw
.hw_addr
+ REG_WOL_CTRL
);
2425 atl1_reset(adapter
);
2427 if (netif_running(netdev
))
2429 netif_device_attach(netdev
);
2431 atl1_via_workaround(adapter
);
2436 #define atl1_suspend NULL
2437 #define atl1_resume NULL
2440 static struct pci_driver atl1_driver
= {
2441 .name
= atl1_driver_name
,
2442 .id_table
= atl1_pci_tbl
,
2443 .probe
= atl1_probe
,
2444 .remove
= __devexit_p(atl1_remove
),
2445 /* Power Managment Hooks */
2446 /* probably broken right now -- CHS */
2447 .suspend
= atl1_suspend
,
2448 .resume
= atl1_resume
2452 * atl1_exit_module - Driver Exit Cleanup Routine
2454 * atl1_exit_module is called just before the driver is removed
2457 static void __exit
atl1_exit_module(void)
2459 pci_unregister_driver(&atl1_driver
);
2463 * atl1_init_module - Driver Registration Routine
2465 * atl1_init_module is the first routine called when the driver is
2466 * loaded. All it does is register with the PCI subsystem.
2468 static int __init
atl1_init_module(void)
2470 printk(KERN_INFO
"%s - version %s\n", atl1_driver_string
, DRIVER_VERSION
);
2471 printk(KERN_INFO
"%s\n", atl1_copyright
);
2472 return pci_register_driver(&atl1_driver
);
2475 module_init(atl1_init_module
);
2476 module_exit(atl1_exit_module
);