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
;
122 hw
->max_frame_size
= netdev
->mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
123 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
126 adapter
->rx_buffer_len
= (hw
->max_frame_size
+ 7) & ~7;
127 adapter
->ict
= 50000; /* 100ms */
128 adapter
->link_speed
= SPEED_0
; /* hardware init */
129 adapter
->link_duplex
= FULL_DUPLEX
;
131 hw
->phy_configured
= false;
132 hw
->preamble_len
= 7;
142 hw
->rfd_fetch_gap
= 1;
143 hw
->rx_jumbo_th
= adapter
->rx_buffer_len
/ 8;
144 hw
->rx_jumbo_lkah
= 1;
145 hw
->rrd_ret_timer
= 16;
147 hw
->tpd_fetch_th
= 16;
148 hw
->txf_burst
= 0x100;
149 hw
->tx_jumbo_task_th
= (hw
->max_frame_size
+ 7) >> 3;
150 hw
->tpd_fetch_gap
= 1;
151 hw
->rcb_value
= atl1_rcb_64
;
152 hw
->dma_ord
= atl1_dma_ord_enh
;
153 hw
->dmar_block
= atl1_dma_req_256
;
154 hw
->dmaw_block
= atl1_dma_req_256
;
157 hw
->cmb_rx_timer
= 1; /* about 2us */
158 hw
->cmb_tx_timer
= 1; /* about 2us */
159 hw
->smb_timer
= 100000; /* about 200ms */
161 atomic_set(&adapter
->irq_sem
, 0);
162 spin_lock_init(&adapter
->lock
);
163 spin_lock_init(&adapter
->mb_lock
);
169 * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
170 * @adapter: board private structure
172 * Return 0 on success, negative on failure
174 s32
atl1_setup_ring_resources(struct atl1_adapter
*adapter
)
176 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
177 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
178 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
179 struct atl1_ring_header
*ring_header
= &adapter
->ring_header
;
180 struct pci_dev
*pdev
= adapter
->pdev
;
184 size
= sizeof(struct atl1_buffer
) * (tpd_ring
->count
+ rfd_ring
->count
);
185 tpd_ring
->buffer_info
= kzalloc(size
, GFP_KERNEL
);
186 if (unlikely(!tpd_ring
->buffer_info
)) {
187 dev_err(&pdev
->dev
, "kzalloc failed , size = D%d\n", size
);
190 rfd_ring
->buffer_info
=
191 (struct atl1_buffer
*)(tpd_ring
->buffer_info
+ tpd_ring
->count
);
193 /* real ring DMA buffer */
194 ring_header
->size
= size
= sizeof(struct tx_packet_desc
) *
196 + sizeof(struct rx_free_desc
) * rfd_ring
->count
197 + sizeof(struct rx_return_desc
) * rrd_ring
->count
198 + sizeof(struct coals_msg_block
)
199 + sizeof(struct stats_msg_block
)
200 + 40; /* "40: for 8 bytes align" huh? -- CHS */
202 ring_header
->desc
= pci_alloc_consistent(pdev
, ring_header
->size
,
204 if (unlikely(!ring_header
->desc
)) {
205 dev_err(&pdev
->dev
, "pci_alloc_consistent failed\n");
209 memset(ring_header
->desc
, 0, ring_header
->size
);
212 tpd_ring
->dma
= ring_header
->dma
;
213 offset
= (tpd_ring
->dma
& 0x7) ? (8 - (ring_header
->dma
& 0x7)) : 0;
214 tpd_ring
->dma
+= offset
;
215 tpd_ring
->desc
= (u8
*) ring_header
->desc
+ offset
;
216 tpd_ring
->size
= sizeof(struct tx_packet_desc
) * tpd_ring
->count
;
217 atomic_set(&tpd_ring
->next_to_use
, 0);
218 atomic_set(&tpd_ring
->next_to_clean
, 0);
221 rfd_ring
->dma
= tpd_ring
->dma
+ tpd_ring
->size
;
222 offset
= (rfd_ring
->dma
& 0x7) ? (8 - (rfd_ring
->dma
& 0x7)) : 0;
223 rfd_ring
->dma
+= offset
;
224 rfd_ring
->desc
= (u8
*) tpd_ring
->desc
+ (tpd_ring
->size
+ offset
);
225 rfd_ring
->size
= sizeof(struct rx_free_desc
) * rfd_ring
->count
;
226 rfd_ring
->next_to_clean
= 0;
227 /* rfd_ring->next_to_use = rfd_ring->count - 1; */
228 atomic_set(&rfd_ring
->next_to_use
, 0);
231 rrd_ring
->dma
= rfd_ring
->dma
+ rfd_ring
->size
;
232 offset
= (rrd_ring
->dma
& 0x7) ? (8 - (rrd_ring
->dma
& 0x7)) : 0;
233 rrd_ring
->dma
+= offset
;
234 rrd_ring
->desc
= (u8
*) rfd_ring
->desc
+ (rfd_ring
->size
+ offset
);
235 rrd_ring
->size
= sizeof(struct rx_return_desc
) * rrd_ring
->count
;
236 rrd_ring
->next_to_use
= 0;
237 atomic_set(&rrd_ring
->next_to_clean
, 0);
240 adapter
->cmb
.dma
= rrd_ring
->dma
+ rrd_ring
->size
;
241 offset
= (adapter
->cmb
.dma
& 0x7) ? (8 - (adapter
->cmb
.dma
& 0x7)) : 0;
242 adapter
->cmb
.dma
+= offset
;
244 (struct coals_msg_block
*) ((u8
*) rrd_ring
->desc
+
245 (rrd_ring
->size
+ offset
));
248 adapter
->smb
.dma
= adapter
->cmb
.dma
+ sizeof(struct coals_msg_block
);
249 offset
= (adapter
->smb
.dma
& 0x7) ? (8 - (adapter
->smb
.dma
& 0x7)) : 0;
250 adapter
->smb
.dma
+= offset
;
251 adapter
->smb
.smb
= (struct stats_msg_block
*)
252 ((u8
*) adapter
->cmb
.cmb
+ (sizeof(struct coals_msg_block
) + offset
));
257 kfree(tpd_ring
->buffer_info
);
262 * atl1_irq_enable - Enable default interrupt generation settings
263 * @adapter: board private structure
265 static void atl1_irq_enable(struct atl1_adapter
*adapter
)
267 if (likely(!atomic_dec_and_test(&adapter
->irq_sem
)))
268 iowrite32(IMR_NORMAL_MASK
, adapter
->hw
.hw_addr
+ REG_IMR
);
271 static void atl1_clear_phy_int(struct atl1_adapter
*adapter
)
276 spin_lock_irqsave(&adapter
->lock
, flags
);
277 atl1_read_phy_reg(&adapter
->hw
, 19, &phy_data
);
278 spin_unlock_irqrestore(&adapter
->lock
, flags
);
281 static void atl1_inc_smb(struct atl1_adapter
*adapter
)
283 struct stats_msg_block
*smb
= adapter
->smb
.smb
;
285 /* Fill out the OS statistics structure */
286 adapter
->soft_stats
.rx_packets
+= smb
->rx_ok
;
287 adapter
->soft_stats
.tx_packets
+= smb
->tx_ok
;
288 adapter
->soft_stats
.rx_bytes
+= smb
->rx_byte_cnt
;
289 adapter
->soft_stats
.tx_bytes
+= smb
->tx_byte_cnt
;
290 adapter
->soft_stats
.multicast
+= smb
->rx_mcast
;
291 adapter
->soft_stats
.collisions
+= (smb
->tx_1_col
+
295 adapter
->hw
.max_retry
);
298 adapter
->soft_stats
.rx_errors
+= (smb
->rx_frag
+
303 smb
->rx_rrd_ov
+ smb
->rx_align_err
);
304 adapter
->soft_stats
.rx_fifo_errors
+= smb
->rx_rxf_ov
;
305 adapter
->soft_stats
.rx_length_errors
+= smb
->rx_len_err
;
306 adapter
->soft_stats
.rx_crc_errors
+= smb
->rx_fcs_err
;
307 adapter
->soft_stats
.rx_frame_errors
+= smb
->rx_align_err
;
308 adapter
->soft_stats
.rx_missed_errors
+= (smb
->rx_rrd_ov
+
311 adapter
->soft_stats
.rx_pause
+= smb
->rx_pause
;
312 adapter
->soft_stats
.rx_rrd_ov
+= smb
->rx_rrd_ov
;
313 adapter
->soft_stats
.rx_trunc
+= smb
->rx_sz_ov
;
316 adapter
->soft_stats
.tx_errors
+= (smb
->tx_late_col
+
318 smb
->tx_underrun
+ smb
->tx_trunc
);
319 adapter
->soft_stats
.tx_fifo_errors
+= smb
->tx_underrun
;
320 adapter
->soft_stats
.tx_aborted_errors
+= smb
->tx_abort_col
;
321 adapter
->soft_stats
.tx_window_errors
+= smb
->tx_late_col
;
323 adapter
->soft_stats
.excecol
+= smb
->tx_abort_col
;
324 adapter
->soft_stats
.deffer
+= smb
->tx_defer
;
325 adapter
->soft_stats
.scc
+= smb
->tx_1_col
;
326 adapter
->soft_stats
.mcc
+= smb
->tx_2_col
;
327 adapter
->soft_stats
.latecol
+= smb
->tx_late_col
;
328 adapter
->soft_stats
.tx_underun
+= smb
->tx_underrun
;
329 adapter
->soft_stats
.tx_trunc
+= smb
->tx_trunc
;
330 adapter
->soft_stats
.tx_pause
+= smb
->tx_pause
;
332 adapter
->net_stats
.rx_packets
= adapter
->soft_stats
.rx_packets
;
333 adapter
->net_stats
.tx_packets
= adapter
->soft_stats
.tx_packets
;
334 adapter
->net_stats
.rx_bytes
= adapter
->soft_stats
.rx_bytes
;
335 adapter
->net_stats
.tx_bytes
= adapter
->soft_stats
.tx_bytes
;
336 adapter
->net_stats
.multicast
= adapter
->soft_stats
.multicast
;
337 adapter
->net_stats
.collisions
= adapter
->soft_stats
.collisions
;
338 adapter
->net_stats
.rx_errors
= adapter
->soft_stats
.rx_errors
;
339 adapter
->net_stats
.rx_over_errors
=
340 adapter
->soft_stats
.rx_missed_errors
;
341 adapter
->net_stats
.rx_length_errors
=
342 adapter
->soft_stats
.rx_length_errors
;
343 adapter
->net_stats
.rx_crc_errors
= adapter
->soft_stats
.rx_crc_errors
;
344 adapter
->net_stats
.rx_frame_errors
=
345 adapter
->soft_stats
.rx_frame_errors
;
346 adapter
->net_stats
.rx_fifo_errors
= adapter
->soft_stats
.rx_fifo_errors
;
347 adapter
->net_stats
.rx_missed_errors
=
348 adapter
->soft_stats
.rx_missed_errors
;
349 adapter
->net_stats
.tx_errors
= adapter
->soft_stats
.tx_errors
;
350 adapter
->net_stats
.tx_fifo_errors
= adapter
->soft_stats
.tx_fifo_errors
;
351 adapter
->net_stats
.tx_aborted_errors
=
352 adapter
->soft_stats
.tx_aborted_errors
;
353 adapter
->net_stats
.tx_window_errors
=
354 adapter
->soft_stats
.tx_window_errors
;
355 adapter
->net_stats
.tx_carrier_errors
=
356 adapter
->soft_stats
.tx_carrier_errors
;
359 static void atl1_rx_checksum(struct atl1_adapter
*adapter
,
360 struct rx_return_desc
*rrd
,
363 skb
->ip_summed
= CHECKSUM_NONE
;
365 if (unlikely(rrd
->pkt_flg
& PACKET_FLAG_ERR
)) {
366 if (rrd
->err_flg
& (ERR_FLAG_CRC
| ERR_FLAG_TRUNC
|
367 ERR_FLAG_CODE
| ERR_FLAG_OV
)) {
368 adapter
->hw_csum_err
++;
369 dev_dbg(&adapter
->pdev
->dev
, "rx checksum error\n");
375 if (!(rrd
->pkt_flg
& PACKET_FLAG_IPV4
))
376 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
380 if (likely(!(rrd
->err_flg
&
381 (ERR_FLAG_IP_CHKSUM
| ERR_FLAG_L4_CHKSUM
)))) {
382 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
383 adapter
->hw_csum_good
++;
387 /* IPv4, but hardware thinks its checksum is wrong */
388 dev_dbg(&adapter
->pdev
->dev
,
389 "hw csum wrong, pkt_flag:%x, err_flag:%x\n",
390 rrd
->pkt_flg
, rrd
->err_flg
);
391 skb
->ip_summed
= CHECKSUM_COMPLETE
;
392 skb
->csum
= htons(rrd
->xsz
.xsum_sz
.rx_chksum
);
393 adapter
->hw_csum_err
++;
398 * atl1_alloc_rx_buffers - Replace used receive buffers
399 * @adapter: address of board private structure
401 static u16
atl1_alloc_rx_buffers(struct atl1_adapter
*adapter
)
403 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
404 struct pci_dev
*pdev
= adapter
->pdev
;
406 unsigned long offset
;
407 struct atl1_buffer
*buffer_info
, *next_info
;
410 u16 rfd_next_to_use
, next_next
;
411 struct rx_free_desc
*rfd_desc
;
413 next_next
= rfd_next_to_use
= atomic_read(&rfd_ring
->next_to_use
);
414 if (++next_next
== rfd_ring
->count
)
416 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
417 next_info
= &rfd_ring
->buffer_info
[next_next
];
419 while (!buffer_info
->alloced
&& !next_info
->alloced
) {
420 if (buffer_info
->skb
) {
421 buffer_info
->alloced
= 1;
425 rfd_desc
= ATL1_RFD_DESC(rfd_ring
, rfd_next_to_use
);
427 skb
= dev_alloc_skb(adapter
->rx_buffer_len
+ NET_IP_ALIGN
);
428 if (unlikely(!skb
)) { /* Better luck next round */
429 adapter
->net_stats
.rx_dropped
++;
434 * Make buffer alignment 2 beyond a 16 byte boundary
435 * this will result in a 16 byte aligned IP header after
436 * the 14 byte MAC header is removed
438 skb_reserve(skb
, NET_IP_ALIGN
);
440 buffer_info
->alloced
= 1;
441 buffer_info
->skb
= skb
;
442 buffer_info
->length
= (u16
) adapter
->rx_buffer_len
;
443 page
= virt_to_page(skb
->data
);
444 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
445 buffer_info
->dma
= pci_map_page(pdev
, page
, offset
,
446 adapter
->rx_buffer_len
,
448 rfd_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
449 rfd_desc
->buf_len
= cpu_to_le16(adapter
->rx_buffer_len
);
450 rfd_desc
->coalese
= 0;
453 rfd_next_to_use
= next_next
;
454 if (unlikely(++next_next
== rfd_ring
->count
))
457 buffer_info
= &rfd_ring
->buffer_info
[rfd_next_to_use
];
458 next_info
= &rfd_ring
->buffer_info
[next_next
];
464 * Force memory writes to complete before letting h/w
465 * know there are new descriptors to fetch. (Only
466 * applicable for weak-ordered memory model archs,
470 atomic_set(&rfd_ring
->next_to_use
, (int)rfd_next_to_use
);
475 static void atl1_intr_rx(struct atl1_adapter
*adapter
)
479 u16 rrd_next_to_clean
;
481 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
482 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
483 struct atl1_buffer
*buffer_info
;
484 struct rx_return_desc
*rrd
;
489 rrd_next_to_clean
= atomic_read(&rrd_ring
->next_to_clean
);
492 rrd
= ATL1_RRD_DESC(rrd_ring
, rrd_next_to_clean
);
494 if (likely(rrd
->xsz
.valid
)) { /* packet valid */
496 /* check rrd status */
497 if (likely(rrd
->num_buf
== 1))
500 /* rrd seems to be bad */
501 if (unlikely(i
-- > 0)) {
502 /* rrd may not be DMAed completely */
503 dev_dbg(&adapter
->pdev
->dev
,
504 "incomplete RRD DMA transfer\n");
509 dev_dbg(&adapter
->pdev
->dev
, "bad RRD\n");
510 /* see if update RFD index */
511 if (rrd
->num_buf
> 1) {
514 (rrd
->xsz
.xsum_sz
.pkt_size
+
515 adapter
->rx_buffer_len
-
516 1) / adapter
->rx_buffer_len
;
517 if (rrd
->num_buf
== num_buf
) {
518 /* clean alloc flag for bad rrd */
519 while (rfd_ring
->next_to_clean
!=
520 (rrd
->buf_indx
+ num_buf
)) {
521 rfd_ring
->buffer_info
[rfd_ring
->
522 next_to_clean
].alloced
= 0;
523 if (++rfd_ring
->next_to_clean
==
534 if (++rrd_next_to_clean
== rrd_ring
->count
)
535 rrd_next_to_clean
= 0;
538 } else { /* current rrd still not be updated */
543 /* clean alloc flag for bad rrd */
544 while (rfd_ring
->next_to_clean
!= rrd
->buf_indx
) {
545 rfd_ring
->buffer_info
[rfd_ring
->next_to_clean
].alloced
=
547 if (++rfd_ring
->next_to_clean
== rfd_ring
->count
)
548 rfd_ring
->next_to_clean
= 0;
551 buffer_info
= &rfd_ring
->buffer_info
[rrd
->buf_indx
];
552 if (++rfd_ring
->next_to_clean
== rfd_ring
->count
)
553 rfd_ring
->next_to_clean
= 0;
555 /* update rrd next to clean */
556 if (++rrd_next_to_clean
== rrd_ring
->count
)
557 rrd_next_to_clean
= 0;
560 if (unlikely(rrd
->pkt_flg
& PACKET_FLAG_ERR
)) {
562 (ERR_FLAG_IP_CHKSUM
| ERR_FLAG_L4_CHKSUM
564 /* packet error, don't need upstream */
565 buffer_info
->alloced
= 0;
572 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
573 buffer_info
->length
, PCI_DMA_FROMDEVICE
);
574 skb
= buffer_info
->skb
;
575 length
= le16_to_cpu(rrd
->xsz
.xsum_sz
.pkt_size
);
577 skb_put(skb
, length
- ETHERNET_FCS_SIZE
);
579 /* Receive Checksum Offload */
580 atl1_rx_checksum(adapter
, rrd
, skb
);
581 skb
->protocol
= eth_type_trans(skb
, adapter
->netdev
);
583 if (adapter
->vlgrp
&& (rrd
->pkt_flg
& PACKET_FLAG_VLAN_INS
)) {
584 u16 vlan_tag
= (rrd
->vlan_tag
>> 4) |
585 ((rrd
->vlan_tag
& 7) << 13) |
586 ((rrd
->vlan_tag
& 8) << 9);
587 vlan_hwaccel_rx(skb
, adapter
->vlgrp
, vlan_tag
);
591 /* let protocol layer free skb */
592 buffer_info
->skb
= NULL
;
593 buffer_info
->alloced
= 0;
596 adapter
->netdev
->last_rx
= jiffies
;
599 atomic_set(&rrd_ring
->next_to_clean
, rrd_next_to_clean
);
601 atl1_alloc_rx_buffers(adapter
);
603 /* update mailbox ? */
607 u32 rrd_next_to_clean
;
609 spin_lock(&adapter
->mb_lock
);
611 tpd_next_to_use
= atomic_read(&adapter
->tpd_ring
.next_to_use
);
613 atomic_read(&adapter
->rfd_ring
.next_to_use
);
615 atomic_read(&adapter
->rrd_ring
.next_to_clean
);
616 value
= ((rfd_next_to_use
& MB_RFD_PROD_INDX_MASK
) <<
617 MB_RFD_PROD_INDX_SHIFT
) |
618 ((rrd_next_to_clean
& MB_RRD_CONS_INDX_MASK
) <<
619 MB_RRD_CONS_INDX_SHIFT
) |
620 ((tpd_next_to_use
& MB_TPD_PROD_INDX_MASK
) <<
621 MB_TPD_PROD_INDX_SHIFT
);
622 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_MAILBOX
);
623 spin_unlock(&adapter
->mb_lock
);
627 static void atl1_intr_tx(struct atl1_adapter
*adapter
)
629 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
630 struct atl1_buffer
*buffer_info
;
631 u16 sw_tpd_next_to_clean
;
632 u16 cmb_tpd_next_to_clean
;
634 sw_tpd_next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
635 cmb_tpd_next_to_clean
= le16_to_cpu(adapter
->cmb
.cmb
->tpd_cons_idx
);
637 while (cmb_tpd_next_to_clean
!= sw_tpd_next_to_clean
) {
638 struct tx_packet_desc
*tpd
;
640 tpd
= ATL1_TPD_DESC(tpd_ring
, sw_tpd_next_to_clean
);
641 buffer_info
= &tpd_ring
->buffer_info
[sw_tpd_next_to_clean
];
642 if (buffer_info
->dma
) {
643 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
644 buffer_info
->length
, PCI_DMA_TODEVICE
);
645 buffer_info
->dma
= 0;
648 if (buffer_info
->skb
) {
649 dev_kfree_skb_irq(buffer_info
->skb
);
650 buffer_info
->skb
= NULL
;
652 tpd
->buffer_addr
= 0;
655 if (++sw_tpd_next_to_clean
== tpd_ring
->count
)
656 sw_tpd_next_to_clean
= 0;
658 atomic_set(&tpd_ring
->next_to_clean
, sw_tpd_next_to_clean
);
660 if (netif_queue_stopped(adapter
->netdev
)
661 && netif_carrier_ok(adapter
->netdev
))
662 netif_wake_queue(adapter
->netdev
);
665 static void atl1_check_for_link(struct atl1_adapter
*adapter
)
667 struct net_device
*netdev
= adapter
->netdev
;
670 spin_lock(&adapter
->lock
);
671 adapter
->phy_timer_pending
= false;
672 atl1_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
673 atl1_read_phy_reg(&adapter
->hw
, MII_BMSR
, &phy_data
);
674 spin_unlock(&adapter
->lock
);
676 /* notify upper layer link down ASAP */
677 if (!(phy_data
& BMSR_LSTATUS
)) { /* Link Down */
678 if (netif_carrier_ok(netdev
)) { /* old link state: Up */
679 dev_info(&adapter
->pdev
->dev
, "%s link is down\n",
681 adapter
->link_speed
= SPEED_0
;
682 netif_carrier_off(netdev
);
683 netif_stop_queue(netdev
);
686 schedule_work(&adapter
->link_chg_task
);
690 * atl1_intr - Interrupt Handler
691 * @irq: interrupt number
692 * @data: pointer to a network interface device structure
693 * @pt_regs: CPU registers structure
695 static irqreturn_t
atl1_intr(int irq
, void *data
)
697 /*struct atl1_adapter *adapter = ((struct net_device *)data)->priv;*/
698 struct atl1_adapter
*adapter
= netdev_priv(data
);
703 status
= adapter
->cmb
.cmb
->int_stats
;
710 /* clear CMB interrupt status at once */
711 adapter
->cmb
.cmb
->int_stats
= 0;
713 if (status
& ISR_GPHY
) /* clear phy status */
714 atl1_clear_phy_int(adapter
);
716 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
717 iowrite32(status
| ISR_DIS_INT
, adapter
->hw
.hw_addr
+ REG_ISR
);
719 /* check if SMB intr */
720 if (status
& ISR_SMB
)
721 atl1_inc_smb(adapter
);
723 /* check if PCIE PHY Link down */
724 if (status
& ISR_PHY_LINKDOWN
) {
725 dev_dbg(&adapter
->pdev
->dev
, "pcie phy link down %x\n",
727 if (netif_running(adapter
->netdev
)) { /* reset MAC */
728 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
729 schedule_work(&adapter
->pcie_dma_to_rst_task
);
734 /* check if DMA read/write error ? */
735 if (status
& (ISR_DMAR_TO_RST
| ISR_DMAW_TO_RST
)) {
736 dev_dbg(&adapter
->pdev
->dev
,
737 "pcie DMA r/w error (status = 0x%x)\n",
739 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
740 schedule_work(&adapter
->pcie_dma_to_rst_task
);
745 if (status
& ISR_GPHY
) {
746 adapter
->soft_stats
.tx_carrier_errors
++;
747 atl1_check_for_link(adapter
);
751 if (status
& ISR_CMB_TX
)
752 atl1_intr_tx(adapter
);
755 if (unlikely(status
& (ISR_RXF_OV
| ISR_RFD_UNRUN
|
756 ISR_RRD_OV
| ISR_HOST_RFD_UNRUN
|
757 ISR_HOST_RRD_OV
| ISR_CMB_RX
))) {
758 if (status
& (ISR_RXF_OV
| ISR_RFD_UNRUN
|
759 ISR_RRD_OV
| ISR_HOST_RFD_UNRUN
|
761 dev_dbg(&adapter
->pdev
->dev
,
762 "rx exception, ISR = 0x%x\n", status
);
763 atl1_intr_rx(adapter
);
769 } while ((status
= adapter
->cmb
.cmb
->int_stats
));
771 /* re-enable Interrupt */
772 iowrite32(ISR_DIS_SMB
| ISR_DIS_DMA
, adapter
->hw
.hw_addr
+ REG_ISR
);
777 * atl1_set_multi - Multicast and Promiscuous mode set
778 * @netdev: network interface device structure
780 * The set_multi entry point is called whenever the multicast address
781 * list or the network interface flags are updated. This routine is
782 * responsible for configuring the hardware for proper multicast,
783 * promiscuous mode, and all-multi behavior.
785 static void atl1_set_multi(struct net_device
*netdev
)
787 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
788 struct atl1_hw
*hw
= &adapter
->hw
;
789 struct dev_mc_list
*mc_ptr
;
793 /* Check for Promiscuous and All Multicast modes */
794 rctl
= ioread32(hw
->hw_addr
+ REG_MAC_CTRL
);
795 if (netdev
->flags
& IFF_PROMISC
)
796 rctl
|= MAC_CTRL_PROMIS_EN
;
797 else if (netdev
->flags
& IFF_ALLMULTI
) {
798 rctl
|= MAC_CTRL_MC_ALL_EN
;
799 rctl
&= ~MAC_CTRL_PROMIS_EN
;
801 rctl
&= ~(MAC_CTRL_PROMIS_EN
| MAC_CTRL_MC_ALL_EN
);
803 iowrite32(rctl
, hw
->hw_addr
+ REG_MAC_CTRL
);
805 /* clear the old settings from the multicast hash table */
806 iowrite32(0, hw
->hw_addr
+ REG_RX_HASH_TABLE
);
807 iowrite32(0, (hw
->hw_addr
+ REG_RX_HASH_TABLE
) + (1 << 2));
809 /* compute mc addresses' hash value ,and put it into hash table */
810 for (mc_ptr
= netdev
->mc_list
; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
811 hash_value
= atl1_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
812 atl1_hash_set(hw
, hash_value
);
816 static void atl1_setup_mac_ctrl(struct atl1_adapter
*adapter
)
819 struct atl1_hw
*hw
= &adapter
->hw
;
820 struct net_device
*netdev
= adapter
->netdev
;
821 /* Config MAC CTRL Register */
822 value
= MAC_CTRL_TX_EN
| MAC_CTRL_RX_EN
;
824 if (FULL_DUPLEX
== adapter
->link_duplex
)
825 value
|= MAC_CTRL_DUPLX
;
827 value
|= ((u32
) ((SPEED_1000
== adapter
->link_speed
) ?
828 MAC_CTRL_SPEED_1000
: MAC_CTRL_SPEED_10_100
) <<
829 MAC_CTRL_SPEED_SHIFT
);
831 value
|= (MAC_CTRL_TX_FLOW
| MAC_CTRL_RX_FLOW
);
833 value
|= (MAC_CTRL_ADD_CRC
| MAC_CTRL_PAD
);
834 /* preamble length */
835 value
|= (((u32
) adapter
->hw
.preamble_len
836 & MAC_CTRL_PRMLEN_MASK
) << MAC_CTRL_PRMLEN_SHIFT
);
839 value
|= MAC_CTRL_RMV_VLAN
;
841 if (adapter->rx_csum)
842 value |= MAC_CTRL_RX_CHKSUM_EN;
845 value
|= MAC_CTRL_BC_EN
;
846 if (netdev
->flags
& IFF_PROMISC
)
847 value
|= MAC_CTRL_PROMIS_EN
;
848 else if (netdev
->flags
& IFF_ALLMULTI
)
849 value
|= MAC_CTRL_MC_ALL_EN
;
850 /* value |= MAC_CTRL_LOOPBACK; */
851 iowrite32(value
, hw
->hw_addr
+ REG_MAC_CTRL
);
854 static u32
atl1_check_link(struct atl1_adapter
*adapter
)
856 struct atl1_hw
*hw
= &adapter
->hw
;
857 struct net_device
*netdev
= adapter
->netdev
;
859 u16 speed
, duplex
, phy_data
;
862 /* MII_BMSR must read twice */
863 atl1_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
864 atl1_read_phy_reg(hw
, MII_BMSR
, &phy_data
);
865 if (!(phy_data
& BMSR_LSTATUS
)) { /* link down */
866 if (netif_carrier_ok(netdev
)) { /* old link state: Up */
867 dev_info(&adapter
->pdev
->dev
, "link is down\n");
868 adapter
->link_speed
= SPEED_0
;
869 netif_carrier_off(netdev
);
870 netif_stop_queue(netdev
);
876 ret_val
= atl1_get_speed_and_duplex(hw
, &speed
, &duplex
);
880 switch (hw
->media_type
) {
881 case MEDIA_TYPE_1000M_FULL
:
882 if (speed
!= SPEED_1000
|| duplex
!= FULL_DUPLEX
)
885 case MEDIA_TYPE_100M_FULL
:
886 if (speed
!= SPEED_100
|| duplex
!= FULL_DUPLEX
)
889 case MEDIA_TYPE_100M_HALF
:
890 if (speed
!= SPEED_100
|| duplex
!= HALF_DUPLEX
)
893 case MEDIA_TYPE_10M_FULL
:
894 if (speed
!= SPEED_10
|| duplex
!= FULL_DUPLEX
)
897 case MEDIA_TYPE_10M_HALF
:
898 if (speed
!= SPEED_10
|| duplex
!= HALF_DUPLEX
)
903 /* link result is our setting */
905 if (adapter
->link_speed
!= speed
906 || adapter
->link_duplex
!= duplex
) {
907 adapter
->link_speed
= speed
;
908 adapter
->link_duplex
= duplex
;
909 atl1_setup_mac_ctrl(adapter
);
910 dev_info(&adapter
->pdev
->dev
,
911 "%s link is up %d Mbps %s\n",
912 netdev
->name
, adapter
->link_speed
,
913 adapter
->link_duplex
== FULL_DUPLEX
?
914 "full duplex" : "half duplex");
916 if (!netif_carrier_ok(netdev
)) { /* Link down -> Up */
917 netif_carrier_on(netdev
);
918 netif_wake_queue(netdev
);
923 /* change orignal link status */
924 if (netif_carrier_ok(netdev
)) {
925 adapter
->link_speed
= SPEED_0
;
926 netif_carrier_off(netdev
);
927 netif_stop_queue(netdev
);
930 if (hw
->media_type
!= MEDIA_TYPE_AUTO_SENSOR
&&
931 hw
->media_type
!= MEDIA_TYPE_1000M_FULL
) {
932 switch (hw
->media_type
) {
933 case MEDIA_TYPE_100M_FULL
:
934 phy_data
= MII_CR_FULL_DUPLEX
| MII_CR_SPEED_100
|
937 case MEDIA_TYPE_100M_HALF
:
938 phy_data
= MII_CR_SPEED_100
| MII_CR_RESET
;
940 case MEDIA_TYPE_10M_FULL
:
942 MII_CR_FULL_DUPLEX
| MII_CR_SPEED_10
| MII_CR_RESET
;
944 default: /* MEDIA_TYPE_10M_HALF: */
945 phy_data
= MII_CR_SPEED_10
| MII_CR_RESET
;
948 atl1_write_phy_reg(hw
, MII_BMCR
, phy_data
);
952 /* auto-neg, insert timer to re-config phy */
953 if (!adapter
->phy_timer_pending
) {
954 adapter
->phy_timer_pending
= true;
955 mod_timer(&adapter
->phy_config_timer
, jiffies
+ 3 * HZ
);
961 static void set_flow_ctrl_old(struct atl1_adapter
*adapter
)
965 /* RFD Flow Control */
966 value
= adapter
->rfd_ring
.count
;
972 value
= ((hi
& RXQ_RXF_PAUSE_TH_HI_MASK
) << RXQ_RXF_PAUSE_TH_HI_SHIFT
) |
973 ((lo
& RXQ_RXF_PAUSE_TH_LO_MASK
) << RXQ_RXF_PAUSE_TH_LO_SHIFT
);
974 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_RXQ_RXF_PAUSE_THRESH
);
976 /* RRD Flow Control */
977 value
= adapter
->rrd_ring
.count
;
982 value
= ((hi
& RXQ_RRD_PAUSE_TH_HI_MASK
) << RXQ_RRD_PAUSE_TH_HI_SHIFT
) |
983 ((lo
& RXQ_RRD_PAUSE_TH_LO_MASK
) << RXQ_RRD_PAUSE_TH_LO_SHIFT
);
984 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_RXQ_RRD_PAUSE_THRESH
);
987 static void set_flow_ctrl_new(struct atl1_hw
*hw
)
991 /* RXF Flow Control */
992 value
= ioread32(hw
->hw_addr
+ REG_SRAM_RXF_LEN
);
999 value
= ((hi
& RXQ_RXF_PAUSE_TH_HI_MASK
) << RXQ_RXF_PAUSE_TH_HI_SHIFT
) |
1000 ((lo
& RXQ_RXF_PAUSE_TH_LO_MASK
) << RXQ_RXF_PAUSE_TH_LO_SHIFT
);
1001 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_RXF_PAUSE_THRESH
);
1003 /* RRD Flow Control */
1004 value
= ioread32(hw
->hw_addr
+ REG_SRAM_RRD_LEN
);
1011 value
= ((hi
& RXQ_RRD_PAUSE_TH_HI_MASK
) << RXQ_RRD_PAUSE_TH_HI_SHIFT
) |
1012 ((lo
& RXQ_RRD_PAUSE_TH_LO_MASK
) << RXQ_RRD_PAUSE_TH_LO_SHIFT
);
1013 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_RRD_PAUSE_THRESH
);
1017 * atl1_configure - Configure Transmit&Receive Unit after Reset
1018 * @adapter: board private structure
1020 * Configure the Tx /Rx unit of the MAC after a reset.
1022 static u32
atl1_configure(struct atl1_adapter
*adapter
)
1024 struct atl1_hw
*hw
= &adapter
->hw
;
1027 /* clear interrupt status */
1028 iowrite32(0xffffffff, adapter
->hw
.hw_addr
+ REG_ISR
);
1030 /* set MAC Address */
1031 value
= (((u32
) hw
->mac_addr
[2]) << 24) |
1032 (((u32
) hw
->mac_addr
[3]) << 16) |
1033 (((u32
) hw
->mac_addr
[4]) << 8) |
1034 (((u32
) hw
->mac_addr
[5]));
1035 iowrite32(value
, hw
->hw_addr
+ REG_MAC_STA_ADDR
);
1036 value
= (((u32
) hw
->mac_addr
[0]) << 8) | (((u32
) hw
->mac_addr
[1]));
1037 iowrite32(value
, hw
->hw_addr
+ (REG_MAC_STA_ADDR
+ 4));
1041 /* HI base address */
1042 iowrite32((u32
) ((adapter
->tpd_ring
.dma
& 0xffffffff00000000ULL
) >> 32),
1043 hw
->hw_addr
+ REG_DESC_BASE_ADDR_HI
);
1044 /* LO base address */
1045 iowrite32((u32
) (adapter
->rfd_ring
.dma
& 0x00000000ffffffffULL
),
1046 hw
->hw_addr
+ REG_DESC_RFD_ADDR_LO
);
1047 iowrite32((u32
) (adapter
->rrd_ring
.dma
& 0x00000000ffffffffULL
),
1048 hw
->hw_addr
+ REG_DESC_RRD_ADDR_LO
);
1049 iowrite32((u32
) (adapter
->tpd_ring
.dma
& 0x00000000ffffffffULL
),
1050 hw
->hw_addr
+ REG_DESC_TPD_ADDR_LO
);
1051 iowrite32((u32
) (adapter
->cmb
.dma
& 0x00000000ffffffffULL
),
1052 hw
->hw_addr
+ REG_DESC_CMB_ADDR_LO
);
1053 iowrite32((u32
) (adapter
->smb
.dma
& 0x00000000ffffffffULL
),
1054 hw
->hw_addr
+ REG_DESC_SMB_ADDR_LO
);
1057 value
= adapter
->rrd_ring
.count
;
1059 value
+= adapter
->rfd_ring
.count
;
1060 iowrite32(value
, hw
->hw_addr
+ REG_DESC_RFD_RRD_RING_SIZE
);
1061 iowrite32(adapter
->tpd_ring
.count
, hw
->hw_addr
+ REG_DESC_TPD_RING_SIZE
);
1064 iowrite32(1, hw
->hw_addr
+ REG_LOAD_PTR
);
1066 /* config Mailbox */
1067 value
= ((atomic_read(&adapter
->tpd_ring
.next_to_use
)
1068 & MB_TPD_PROD_INDX_MASK
) << MB_TPD_PROD_INDX_SHIFT
) |
1069 ((atomic_read(&adapter
->rrd_ring
.next_to_clean
)
1070 & MB_RRD_CONS_INDX_MASK
) << MB_RRD_CONS_INDX_SHIFT
) |
1071 ((atomic_read(&adapter
->rfd_ring
.next_to_use
)
1072 & MB_RFD_PROD_INDX_MASK
) << MB_RFD_PROD_INDX_SHIFT
);
1073 iowrite32(value
, hw
->hw_addr
+ REG_MAILBOX
);
1075 /* config IPG/IFG */
1076 value
= (((u32
) hw
->ipgt
& MAC_IPG_IFG_IPGT_MASK
)
1077 << MAC_IPG_IFG_IPGT_SHIFT
) |
1078 (((u32
) hw
->min_ifg
& MAC_IPG_IFG_MIFG_MASK
)
1079 << MAC_IPG_IFG_MIFG_SHIFT
) |
1080 (((u32
) hw
->ipgr1
& MAC_IPG_IFG_IPGR1_MASK
)
1081 << MAC_IPG_IFG_IPGR1_SHIFT
) |
1082 (((u32
) hw
->ipgr2
& MAC_IPG_IFG_IPGR2_MASK
)
1083 << MAC_IPG_IFG_IPGR2_SHIFT
);
1084 iowrite32(value
, hw
->hw_addr
+ REG_MAC_IPG_IFG
);
1086 /* config Half-Duplex Control */
1087 value
= ((u32
) hw
->lcol
& MAC_HALF_DUPLX_CTRL_LCOL_MASK
) |
1088 (((u32
) hw
->max_retry
& MAC_HALF_DUPLX_CTRL_RETRY_MASK
)
1089 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT
) |
1090 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN
|
1091 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT
) |
1092 (((u32
) hw
->jam_ipg
& MAC_HALF_DUPLX_CTRL_JAMIPG_MASK
)
1093 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT
);
1094 iowrite32(value
, hw
->hw_addr
+ REG_MAC_HALF_DUPLX_CTRL
);
1096 /* set Interrupt Moderator Timer */
1097 iowrite16(adapter
->imt
, hw
->hw_addr
+ REG_IRQ_MODU_TIMER_INIT
);
1098 iowrite32(MASTER_CTRL_ITIMER_EN
, hw
->hw_addr
+ REG_MASTER_CTRL
);
1100 /* set Interrupt Clear Timer */
1101 iowrite16(adapter
->ict
, hw
->hw_addr
+ REG_CMBDISDMA_TIMER
);
1103 /* set MTU, 4 : VLAN */
1104 iowrite32(hw
->max_frame_size
+ 4, hw
->hw_addr
+ REG_MTU
);
1106 /* jumbo size & rrd retirement timer */
1107 value
= (((u32
) hw
->rx_jumbo_th
& RXQ_JMBOSZ_TH_MASK
)
1108 << RXQ_JMBOSZ_TH_SHIFT
) |
1109 (((u32
) hw
->rx_jumbo_lkah
& RXQ_JMBO_LKAH_MASK
)
1110 << RXQ_JMBO_LKAH_SHIFT
) |
1111 (((u32
) hw
->rrd_ret_timer
& RXQ_RRD_TIMER_MASK
)
1112 << RXQ_RRD_TIMER_SHIFT
);
1113 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_JMBOSZ_RRDTIM
);
1116 switch (hw
->dev_rev
) {
1121 set_flow_ctrl_old(adapter
);
1124 set_flow_ctrl_new(hw
);
1129 value
= (((u32
) hw
->tpd_burst
& TXQ_CTRL_TPD_BURST_NUM_MASK
)
1130 << TXQ_CTRL_TPD_BURST_NUM_SHIFT
) |
1131 (((u32
) hw
->txf_burst
& TXQ_CTRL_TXF_BURST_NUM_MASK
)
1132 << TXQ_CTRL_TXF_BURST_NUM_SHIFT
) |
1133 (((u32
) hw
->tpd_fetch_th
& TXQ_CTRL_TPD_FETCH_TH_MASK
)
1134 << TXQ_CTRL_TPD_FETCH_TH_SHIFT
) | TXQ_CTRL_ENH_MODE
| TXQ_CTRL_EN
;
1135 iowrite32(value
, hw
->hw_addr
+ REG_TXQ_CTRL
);
1137 /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
1138 value
= (((u32
) hw
->tx_jumbo_task_th
& TX_JUMBO_TASK_TH_MASK
)
1139 << TX_JUMBO_TASK_TH_SHIFT
) |
1140 (((u32
) hw
->tpd_fetch_gap
& TX_TPD_MIN_IPG_MASK
)
1141 << TX_TPD_MIN_IPG_SHIFT
);
1142 iowrite32(value
, hw
->hw_addr
+ REG_TX_JUMBO_TASK_TH_TPD_IPG
);
1145 value
= (((u32
) hw
->rfd_burst
& RXQ_CTRL_RFD_BURST_NUM_MASK
)
1146 << RXQ_CTRL_RFD_BURST_NUM_SHIFT
) |
1147 (((u32
) hw
->rrd_burst
& RXQ_CTRL_RRD_BURST_THRESH_MASK
)
1148 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT
) |
1149 (((u32
) hw
->rfd_fetch_gap
& RXQ_CTRL_RFD_PREF_MIN_IPG_MASK
)
1150 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT
) |
1151 RXQ_CTRL_CUT_THRU_EN
| RXQ_CTRL_EN
;
1152 iowrite32(value
, hw
->hw_addr
+ REG_RXQ_CTRL
);
1154 /* config DMA Engine */
1155 value
= ((((u32
) hw
->dmar_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
1156 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
) |
1157 ((((u32
) hw
->dmaw_block
) & DMA_CTRL_DMAR_BURST_LEN_MASK
)
1158 << DMA_CTRL_DMAR_BURST_LEN_SHIFT
) |
1159 DMA_CTRL_DMAR_EN
| DMA_CTRL_DMAW_EN
;
1160 value
|= (u32
) hw
->dma_ord
;
1161 if (atl1_rcb_128
== hw
->rcb_value
)
1162 value
|= DMA_CTRL_RCB_VALUE
;
1163 iowrite32(value
, hw
->hw_addr
+ REG_DMA_CTRL
);
1165 /* config CMB / SMB */
1166 value
= hw
->cmb_rrd
| ((u32
) hw
->cmb_tpd
<< 16);
1167 iowrite32(value
, hw
->hw_addr
+ REG_CMB_WRITE_TH
);
1168 value
= hw
->cmb_rx_timer
| ((u32
) hw
->cmb_tx_timer
<< 16);
1169 iowrite32(value
, hw
->hw_addr
+ REG_CMB_WRITE_TIMER
);
1170 iowrite32(hw
->smb_timer
, hw
->hw_addr
+ REG_SMB_TIMER
);
1172 /* --- enable CMB / SMB */
1173 value
= CSMB_CTRL_CMB_EN
| CSMB_CTRL_SMB_EN
;
1174 iowrite32(value
, hw
->hw_addr
+ REG_CSMB_CTRL
);
1176 value
= ioread32(adapter
->hw
.hw_addr
+ REG_ISR
);
1177 if (unlikely((value
& ISR_PHY_LINKDOWN
) != 0))
1178 value
= 1; /* config failed */
1182 /* clear all interrupt status */
1183 iowrite32(0x3fffffff, adapter
->hw
.hw_addr
+ REG_ISR
);
1184 iowrite32(0, adapter
->hw
.hw_addr
+ REG_ISR
);
1189 * atl1_irq_disable - Mask off interrupt generation on the NIC
1190 * @adapter: board private structure
1192 static void atl1_irq_disable(struct atl1_adapter
*adapter
)
1194 atomic_inc(&adapter
->irq_sem
);
1195 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
1196 ioread32(adapter
->hw
.hw_addr
+ REG_IMR
);
1197 synchronize_irq(adapter
->pdev
->irq
);
1200 static void atl1_vlan_rx_register(struct net_device
*netdev
,
1201 struct vlan_group
*grp
)
1203 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1204 unsigned long flags
;
1207 spin_lock_irqsave(&adapter
->lock
, flags
);
1208 /* atl1_irq_disable(adapter); */
1209 adapter
->vlgrp
= grp
;
1212 /* enable VLAN tag insert/strip */
1213 ctrl
= ioread32(adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1214 ctrl
|= MAC_CTRL_RMV_VLAN
;
1215 iowrite32(ctrl
, adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1217 /* disable VLAN tag insert/strip */
1218 ctrl
= ioread32(adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1219 ctrl
&= ~MAC_CTRL_RMV_VLAN
;
1220 iowrite32(ctrl
, adapter
->hw
.hw_addr
+ REG_MAC_CTRL
);
1223 /* atl1_irq_enable(adapter); */
1224 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1227 static void atl1_restore_vlan(struct atl1_adapter
*adapter
)
1229 atl1_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
1232 static u16
tpd_avail(struct atl1_tpd_ring
*tpd_ring
)
1234 u16 next_to_clean
= atomic_read(&tpd_ring
->next_to_clean
);
1235 u16 next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1236 return ((next_to_clean
>
1237 next_to_use
) ? next_to_clean
- next_to_use
-
1238 1 : tpd_ring
->count
+ next_to_clean
- next_to_use
- 1);
1241 static int atl1_tso(struct atl1_adapter
*adapter
, struct sk_buff
*skb
,
1242 struct tso_param
*tso
)
1244 /* We enter this function holding a spinlock. */
1248 if (skb_shinfo(skb
)->gso_size
) {
1249 if (skb_header_cloned(skb
)) {
1250 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
1255 if (skb
->protocol
== ntohs(ETH_P_IP
)) {
1256 struct iphdr
*iph
= ip_hdr(skb
);
1260 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
1264 ipofst
= skb_network_offset(skb
);
1265 if (ipofst
!= ENET_HEADER_SIZE
) /* 802.3 frame */
1266 tso
->tsopl
|= 1 << TSO_PARAM_ETHTYPE_SHIFT
;
1268 tso
->tsopl
|= (iph
->ihl
&
1269 CSUM_PARAM_IPHL_MASK
) << CSUM_PARAM_IPHL_SHIFT
;
1270 tso
->tsopl
|= (tcp_hdrlen(skb
) &
1271 TSO_PARAM_TCPHDRLEN_MASK
) << TSO_PARAM_TCPHDRLEN_SHIFT
;
1272 tso
->tsopl
|= (skb_shinfo(skb
)->gso_size
&
1273 TSO_PARAM_MSS_MASK
) << TSO_PARAM_MSS_SHIFT
;
1274 tso
->tsopl
|= 1 << TSO_PARAM_IPCKSUM_SHIFT
;
1275 tso
->tsopl
|= 1 << TSO_PARAM_TCPCKSUM_SHIFT
;
1276 tso
->tsopl
|= 1 << TSO_PARAM_SEGMENT_SHIFT
;
1283 static int atl1_tx_csum(struct atl1_adapter
*adapter
, struct sk_buff
*skb
,
1284 struct csum_param
*csum
)
1288 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
1289 cso
= skb_transport_offset(skb
);
1290 css
= cso
+ skb
->csum_offset
;
1291 if (unlikely(cso
& 0x1)) {
1292 dev_dbg(&adapter
->pdev
->dev
,
1293 "payload offset not an even number\n");
1296 csum
->csumpl
|= (cso
& CSUM_PARAM_PLOADOFFSET_MASK
) <<
1297 CSUM_PARAM_PLOADOFFSET_SHIFT
;
1298 csum
->csumpl
|= (css
& CSUM_PARAM_XSUMOFFSET_MASK
) <<
1299 CSUM_PARAM_XSUMOFFSET_SHIFT
;
1300 csum
->csumpl
|= 1 << CSUM_PARAM_CUSTOMCKSUM_SHIFT
;
1307 static void atl1_tx_map(struct atl1_adapter
*adapter
,
1308 struct sk_buff
*skb
, bool tcp_seg
)
1310 /* We enter this function holding a spinlock. */
1311 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1312 struct atl1_buffer
*buffer_info
;
1314 int first_buf_len
= skb
->len
;
1315 unsigned long offset
;
1316 unsigned int nr_frags
;
1318 u16 tpd_next_to_use
;
1322 first_buf_len
-= skb
->data_len
;
1323 nr_frags
= skb_shinfo(skb
)->nr_frags
;
1324 tpd_next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1325 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1326 if (unlikely(buffer_info
->skb
))
1328 buffer_info
->skb
= NULL
; /* put skb in last TPD */
1332 proto_hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1333 buffer_info
->length
= proto_hdr_len
;
1334 page
= virt_to_page(skb
->data
);
1335 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
1336 buffer_info
->dma
= pci_map_page(adapter
->pdev
, page
,
1337 offset
, proto_hdr_len
,
1340 if (++tpd_next_to_use
== tpd_ring
->count
)
1341 tpd_next_to_use
= 0;
1343 if (first_buf_len
> proto_hdr_len
) {
1344 len12
= first_buf_len
- proto_hdr_len
;
1345 m
= (len12
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1346 for (i
= 0; i
< m
; i
++) {
1348 &tpd_ring
->buffer_info
[tpd_next_to_use
];
1349 buffer_info
->skb
= NULL
;
1350 buffer_info
->length
=
1352 len12
) ? MAX_TX_BUF_LEN
: len12
;
1353 len12
-= buffer_info
->length
;
1354 page
= virt_to_page(skb
->data
+
1356 i
* MAX_TX_BUF_LEN
));
1357 offset
= (unsigned long)(skb
->data
+
1359 i
* MAX_TX_BUF_LEN
)) &
1362 pci_map_page(adapter
->pdev
, page
, offset
,
1363 buffer_info
->length
,
1365 if (++tpd_next_to_use
== tpd_ring
->count
)
1366 tpd_next_to_use
= 0;
1371 buffer_info
->length
= first_buf_len
;
1372 page
= virt_to_page(skb
->data
);
1373 offset
= (unsigned long)skb
->data
& ~PAGE_MASK
;
1374 buffer_info
->dma
= pci_map_page(adapter
->pdev
, page
,
1375 offset
, first_buf_len
,
1377 if (++tpd_next_to_use
== tpd_ring
->count
)
1378 tpd_next_to_use
= 0;
1381 for (f
= 0; f
< nr_frags
; f
++) {
1382 struct skb_frag_struct
*frag
;
1385 frag
= &skb_shinfo(skb
)->frags
[f
];
1388 m
= (lenf
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1389 for (i
= 0; i
< m
; i
++) {
1390 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1391 if (unlikely(buffer_info
->skb
))
1393 buffer_info
->skb
= NULL
;
1394 buffer_info
->length
=
1395 (lenf
> MAX_TX_BUF_LEN
) ? MAX_TX_BUF_LEN
: lenf
;
1396 lenf
-= buffer_info
->length
;
1398 pci_map_page(adapter
->pdev
, frag
->page
,
1399 frag
->page_offset
+ i
* MAX_TX_BUF_LEN
,
1400 buffer_info
->length
, PCI_DMA_TODEVICE
);
1402 if (++tpd_next_to_use
== tpd_ring
->count
)
1403 tpd_next_to_use
= 0;
1407 /* last tpd's buffer-info */
1408 buffer_info
->skb
= skb
;
1411 static void atl1_tx_queue(struct atl1_adapter
*adapter
, int count
,
1412 union tpd_descr
*descr
)
1414 /* We enter this function holding a spinlock. */
1415 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1418 struct atl1_buffer
*buffer_info
;
1419 struct tx_packet_desc
*tpd
;
1420 u16 tpd_next_to_use
= atomic_read(&tpd_ring
->next_to_use
);
1422 for (j
= 0; j
< count
; j
++) {
1423 buffer_info
= &tpd_ring
->buffer_info
[tpd_next_to_use
];
1424 tpd
= ATL1_TPD_DESC(&adapter
->tpd_ring
, tpd_next_to_use
);
1425 tpd
->desc
.csum
.csumpu
= descr
->csum
.csumpu
;
1426 tpd
->desc
.csum
.csumpl
= descr
->csum
.csumpl
;
1427 tpd
->desc
.tso
.tsopu
= descr
->tso
.tsopu
;
1428 tpd
->desc
.tso
.tsopl
= descr
->tso
.tsopl
;
1429 tpd
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
1430 tpd
->desc
.data
= descr
->data
;
1431 tpd
->desc
.csum
.csumpu
|= (cpu_to_le16(buffer_info
->length
) &
1432 CSUM_PARAM_BUFLEN_MASK
) << CSUM_PARAM_BUFLEN_SHIFT
;
1434 val
= (descr
->tso
.tsopl
>> TSO_PARAM_SEGMENT_SHIFT
) &
1435 TSO_PARAM_SEGMENT_MASK
;
1437 tpd
->desc
.tso
.tsopl
|= 1 << TSO_PARAM_HDRFLAG_SHIFT
;
1439 if (j
== (count
- 1))
1440 tpd
->desc
.csum
.csumpl
|= 1 << CSUM_PARAM_EOP_SHIFT
;
1442 if (++tpd_next_to_use
== tpd_ring
->count
)
1443 tpd_next_to_use
= 0;
1446 * Force memory writes to complete before letting h/w
1447 * know there are new descriptors to fetch. (Only
1448 * applicable for weak-ordered memory model archs,
1453 atomic_set(&tpd_ring
->next_to_use
, (int)tpd_next_to_use
);
1456 static void atl1_update_mailbox(struct atl1_adapter
*adapter
)
1458 unsigned long flags
;
1459 u32 tpd_next_to_use
;
1460 u32 rfd_next_to_use
;
1461 u32 rrd_next_to_clean
;
1464 spin_lock_irqsave(&adapter
->mb_lock
, flags
);
1466 tpd_next_to_use
= atomic_read(&adapter
->tpd_ring
.next_to_use
);
1467 rfd_next_to_use
= atomic_read(&adapter
->rfd_ring
.next_to_use
);
1468 rrd_next_to_clean
= atomic_read(&adapter
->rrd_ring
.next_to_clean
);
1470 value
= ((rfd_next_to_use
& MB_RFD_PROD_INDX_MASK
) <<
1471 MB_RFD_PROD_INDX_SHIFT
) |
1472 ((rrd_next_to_clean
& MB_RRD_CONS_INDX_MASK
) <<
1473 MB_RRD_CONS_INDX_SHIFT
) |
1474 ((tpd_next_to_use
& MB_TPD_PROD_INDX_MASK
) <<
1475 MB_TPD_PROD_INDX_SHIFT
);
1476 iowrite32(value
, adapter
->hw
.hw_addr
+ REG_MAILBOX
);
1478 spin_unlock_irqrestore(&adapter
->mb_lock
, flags
);
1481 static int atl1_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
1483 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1489 union tpd_descr param
;
1492 unsigned long flags
;
1493 unsigned int nr_frags
= 0;
1494 unsigned int mss
= 0;
1496 unsigned int proto_hdr_len
;
1498 len
-= skb
->data_len
;
1500 if (unlikely(skb
->len
== 0)) {
1501 dev_kfree_skb_any(skb
);
1502 return NETDEV_TX_OK
;
1506 param
.tso
.tsopu
= 0;
1507 param
.tso
.tsopl
= 0;
1508 param
.csum
.csumpu
= 0;
1509 param
.csum
.csumpl
= 0;
1511 /* nr_frags will be nonzero if we're doing scatter/gather (SG) */
1512 nr_frags
= skb_shinfo(skb
)->nr_frags
;
1513 for (f
= 0; f
< nr_frags
; f
++) {
1514 frag_size
= skb_shinfo(skb
)->frags
[f
].size
;
1517 (frag_size
+ MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1520 /* mss will be nonzero if we're doing segment offload (TSO/GSO) */
1521 mss
= skb_shinfo(skb
)->gso_size
;
1523 if (skb
->protocol
== htons(ETH_P_IP
)) {
1524 proto_hdr_len
= (skb_transport_offset(skb
) +
1526 if (unlikely(proto_hdr_len
> len
)) {
1527 dev_kfree_skb_any(skb
);
1528 return NETDEV_TX_OK
;
1530 /* need additional TPD ? */
1531 if (proto_hdr_len
!= len
)
1532 count
+= (len
- proto_hdr_len
+
1533 MAX_TX_BUF_LEN
- 1) / MAX_TX_BUF_LEN
;
1537 local_irq_save(flags
);
1538 if (!spin_trylock(&adapter
->lock
)) {
1539 /* Can't get lock - tell upper layer to requeue */
1540 local_irq_restore(flags
);
1541 dev_dbg(&adapter
->pdev
->dev
, "tx locked\n");
1542 return NETDEV_TX_LOCKED
;
1545 if (tpd_avail(&adapter
->tpd_ring
) < count
) {
1546 /* not enough descriptors */
1547 netif_stop_queue(netdev
);
1548 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1549 dev_dbg(&adapter
->pdev
->dev
, "tx busy\n");
1550 return NETDEV_TX_BUSY
;
1555 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
1556 vlan_tag
= vlan_tx_tag_get(skb
);
1557 vlan_tag
= (vlan_tag
<< 4) | (vlan_tag
>> 13) |
1558 ((vlan_tag
>> 9) & 0x8);
1559 param
.csum
.csumpl
|= 1 << CSUM_PARAM_INSVLAG_SHIFT
;
1560 param
.csum
.csumpu
|= (vlan_tag
& CSUM_PARAM_VALANTAG_MASK
) <<
1561 CSUM_PARAM_VALAN_SHIFT
;
1564 tso
= atl1_tso(adapter
, skb
, ¶m
.tso
);
1566 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1567 dev_kfree_skb_any(skb
);
1568 return NETDEV_TX_OK
;
1572 ret_val
= atl1_tx_csum(adapter
, skb
, ¶m
.csum
);
1574 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1575 dev_kfree_skb_any(skb
);
1576 return NETDEV_TX_OK
;
1580 val
= (param
.csum
.csumpl
>> CSUM_PARAM_SEGMENT_SHIFT
) &
1581 CSUM_PARAM_SEGMENT_MASK
;
1582 atl1_tx_map(adapter
, skb
, 1 == val
);
1583 atl1_tx_queue(adapter
, count
, ¶m
);
1584 netdev
->trans_start
= jiffies
;
1585 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1586 atl1_update_mailbox(adapter
);
1587 return NETDEV_TX_OK
;
1591 * atl1_get_stats - Get System Network Statistics
1592 * @netdev: network interface device structure
1594 * Returns the address of the device statistics structure.
1595 * The statistics are actually updated from the timer callback.
1597 static struct net_device_stats
*atl1_get_stats(struct net_device
*netdev
)
1599 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1600 return &adapter
->net_stats
;
1604 * atl1_clean_rx_ring - Free RFD Buffers
1605 * @adapter: board private structure
1607 static void atl1_clean_rx_ring(struct atl1_adapter
*adapter
)
1609 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1610 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1611 struct atl1_buffer
*buffer_info
;
1612 struct pci_dev
*pdev
= adapter
->pdev
;
1616 /* Free all the Rx ring sk_buffs */
1617 for (i
= 0; i
< rfd_ring
->count
; i
++) {
1618 buffer_info
= &rfd_ring
->buffer_info
[i
];
1619 if (buffer_info
->dma
) {
1620 pci_unmap_page(pdev
,
1622 buffer_info
->length
,
1623 PCI_DMA_FROMDEVICE
);
1624 buffer_info
->dma
= 0;
1626 if (buffer_info
->skb
) {
1627 dev_kfree_skb(buffer_info
->skb
);
1628 buffer_info
->skb
= NULL
;
1632 size
= sizeof(struct atl1_buffer
) * rfd_ring
->count
;
1633 memset(rfd_ring
->buffer_info
, 0, size
);
1635 /* Zero out the descriptor ring */
1636 memset(rfd_ring
->desc
, 0, rfd_ring
->size
);
1638 rfd_ring
->next_to_clean
= 0;
1639 atomic_set(&rfd_ring
->next_to_use
, 0);
1641 rrd_ring
->next_to_use
= 0;
1642 atomic_set(&rrd_ring
->next_to_clean
, 0);
1646 * atl1_clean_tx_ring - Free Tx Buffers
1647 * @adapter: board private structure
1649 static void atl1_clean_tx_ring(struct atl1_adapter
*adapter
)
1651 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1652 struct atl1_buffer
*buffer_info
;
1653 struct pci_dev
*pdev
= adapter
->pdev
;
1657 /* Free all the Tx ring sk_buffs */
1658 for (i
= 0; i
< tpd_ring
->count
; i
++) {
1659 buffer_info
= &tpd_ring
->buffer_info
[i
];
1660 if (buffer_info
->dma
) {
1661 pci_unmap_page(pdev
, buffer_info
->dma
,
1662 buffer_info
->length
, PCI_DMA_TODEVICE
);
1663 buffer_info
->dma
= 0;
1667 for (i
= 0; i
< tpd_ring
->count
; i
++) {
1668 buffer_info
= &tpd_ring
->buffer_info
[i
];
1669 if (buffer_info
->skb
) {
1670 dev_kfree_skb_any(buffer_info
->skb
);
1671 buffer_info
->skb
= NULL
;
1675 size
= sizeof(struct atl1_buffer
) * tpd_ring
->count
;
1676 memset(tpd_ring
->buffer_info
, 0, size
);
1678 /* Zero out the descriptor ring */
1679 memset(tpd_ring
->desc
, 0, tpd_ring
->size
);
1681 atomic_set(&tpd_ring
->next_to_use
, 0);
1682 atomic_set(&tpd_ring
->next_to_clean
, 0);
1686 * atl1_free_ring_resources - Free Tx / RX descriptor Resources
1687 * @adapter: board private structure
1689 * Free all transmit software resources
1691 void atl1_free_ring_resources(struct atl1_adapter
*adapter
)
1693 struct pci_dev
*pdev
= adapter
->pdev
;
1694 struct atl1_tpd_ring
*tpd_ring
= &adapter
->tpd_ring
;
1695 struct atl1_rfd_ring
*rfd_ring
= &adapter
->rfd_ring
;
1696 struct atl1_rrd_ring
*rrd_ring
= &adapter
->rrd_ring
;
1697 struct atl1_ring_header
*ring_header
= &adapter
->ring_header
;
1699 atl1_clean_tx_ring(adapter
);
1700 atl1_clean_rx_ring(adapter
);
1702 kfree(tpd_ring
->buffer_info
);
1703 pci_free_consistent(pdev
, ring_header
->size
, ring_header
->desc
,
1706 tpd_ring
->buffer_info
= NULL
;
1707 tpd_ring
->desc
= NULL
;
1710 rfd_ring
->buffer_info
= NULL
;
1711 rfd_ring
->desc
= NULL
;
1714 rrd_ring
->desc
= NULL
;
1718 s32
atl1_up(struct atl1_adapter
*adapter
)
1720 struct net_device
*netdev
= adapter
->netdev
;
1722 int irq_flags
= IRQF_SAMPLE_RANDOM
;
1724 /* hardware has been reset, we need to reload some things */
1725 atl1_set_multi(netdev
);
1726 atl1_restore_vlan(adapter
);
1727 err
= atl1_alloc_rx_buffers(adapter
);
1728 if (unlikely(!err
)) /* no RX BUFFER allocated */
1731 if (unlikely(atl1_configure(adapter
))) {
1736 err
= pci_enable_msi(adapter
->pdev
);
1738 dev_info(&adapter
->pdev
->dev
,
1739 "Unable to enable MSI: %d\n", err
);
1740 irq_flags
|= IRQF_SHARED
;
1743 err
= request_irq(adapter
->pdev
->irq
, &atl1_intr
, irq_flags
,
1744 netdev
->name
, netdev
);
1748 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1749 atl1_irq_enable(adapter
);
1750 atl1_check_link(adapter
);
1753 /* FIXME: unreachable code! -- CHS */
1754 /* free irq disable any interrupt */
1755 iowrite32(0, adapter
->hw
.hw_addr
+ REG_IMR
);
1756 free_irq(adapter
->pdev
->irq
, netdev
);
1759 pci_disable_msi(adapter
->pdev
);
1760 /* free rx_buffers */
1761 atl1_clean_rx_ring(adapter
);
1765 void atl1_down(struct atl1_adapter
*adapter
)
1767 struct net_device
*netdev
= adapter
->netdev
;
1769 del_timer_sync(&adapter
->watchdog_timer
);
1770 del_timer_sync(&adapter
->phy_config_timer
);
1771 adapter
->phy_timer_pending
= false;
1773 atl1_irq_disable(adapter
);
1774 free_irq(adapter
->pdev
->irq
, netdev
);
1775 pci_disable_msi(adapter
->pdev
);
1776 atl1_reset_hw(&adapter
->hw
);
1777 adapter
->cmb
.cmb
->int_stats
= 0;
1779 adapter
->link_speed
= SPEED_0
;
1780 adapter
->link_duplex
= -1;
1781 netif_carrier_off(netdev
);
1782 netif_stop_queue(netdev
);
1784 atl1_clean_tx_ring(adapter
);
1785 atl1_clean_rx_ring(adapter
);
1789 * atl1_change_mtu - Change the Maximum Transfer Unit
1790 * @netdev: network interface device structure
1791 * @new_mtu: new value for maximum frame size
1793 * Returns 0 on success, negative on failure
1795 static int atl1_change_mtu(struct net_device
*netdev
, int new_mtu
)
1797 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1798 int old_mtu
= netdev
->mtu
;
1799 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1801 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
1802 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
1803 dev_warn(&adapter
->pdev
->dev
, "invalid MTU setting\n");
1807 adapter
->hw
.max_frame_size
= max_frame
;
1808 adapter
->hw
.tx_jumbo_task_th
= (max_frame
+ 7) >> 3;
1809 adapter
->rx_buffer_len
= (max_frame
+ 7) & ~7;
1810 adapter
->hw
.rx_jumbo_th
= adapter
->rx_buffer_len
/ 8;
1812 netdev
->mtu
= new_mtu
;
1813 if ((old_mtu
!= new_mtu
) && netif_running(netdev
)) {
1822 * atl1_set_mac - Change the Ethernet Address of the NIC
1823 * @netdev: network interface device structure
1824 * @p: pointer to an address structure
1826 * Returns 0 on success, negative on failure
1828 static int atl1_set_mac(struct net_device
*netdev
, void *p
)
1830 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1831 struct sockaddr
*addr
= p
;
1833 if (netif_running(netdev
))
1836 if (!is_valid_ether_addr(addr
->sa_data
))
1837 return -EADDRNOTAVAIL
;
1839 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
1840 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
1842 atl1_set_mac_addr(&adapter
->hw
);
1847 * atl1_watchdog - Timer Call-back
1848 * @data: pointer to netdev cast into an unsigned long
1850 static void atl1_watchdog(unsigned long data
)
1852 struct atl1_adapter
*adapter
= (struct atl1_adapter
*)data
;
1854 /* Reset the timer */
1855 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1858 static int mdio_read(struct net_device
*netdev
, int phy_id
, int reg_num
)
1860 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1863 atl1_read_phy_reg(&adapter
->hw
, reg_num
& 0x1f, &result
);
1868 static void mdio_write(struct net_device
*netdev
, int phy_id
, int reg_num
, int val
)
1870 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1872 atl1_write_phy_reg(&adapter
->hw
, reg_num
, val
);
1881 static int atl1_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
1883 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1884 unsigned long flags
;
1887 if (!netif_running(netdev
))
1890 spin_lock_irqsave(&adapter
->lock
, flags
);
1891 retval
= generic_mii_ioctl(&adapter
->mii
, if_mii(ifr
), cmd
, NULL
);
1892 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1903 static int atl1_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
1909 return atl1_mii_ioctl(netdev
, ifr
, cmd
);
1916 * atl1_tx_timeout - Respond to a Tx Hang
1917 * @netdev: network interface device structure
1919 static void atl1_tx_timeout(struct net_device
*netdev
)
1921 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1922 /* Do the reset outside of interrupt context */
1923 schedule_work(&adapter
->tx_timeout_task
);
1927 * atl1_phy_config - Timer Call-back
1928 * @data: pointer to netdev cast into an unsigned long
1930 static void atl1_phy_config(unsigned long data
)
1932 struct atl1_adapter
*adapter
= (struct atl1_adapter
*)data
;
1933 struct atl1_hw
*hw
= &adapter
->hw
;
1934 unsigned long flags
;
1936 spin_lock_irqsave(&adapter
->lock
, flags
);
1937 adapter
->phy_timer_pending
= false;
1938 atl1_write_phy_reg(hw
, MII_ADVERTISE
, hw
->mii_autoneg_adv_reg
);
1939 atl1_write_phy_reg(hw
, MII_AT001_CR
, hw
->mii_1000t_ctrl_reg
);
1940 atl1_write_phy_reg(hw
, MII_BMCR
, MII_CR_RESET
| MII_CR_AUTO_NEG_EN
);
1941 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1944 int atl1_reset(struct atl1_adapter
*adapter
)
1948 ret
= atl1_reset_hw(&adapter
->hw
);
1949 if (ret
!= ATL1_SUCCESS
)
1951 return atl1_init_hw(&adapter
->hw
);
1955 * atl1_open - Called when a network interface is made active
1956 * @netdev: network interface device structure
1958 * Returns 0 on success, negative value on failure
1960 * The open entry point is called when a network interface is made
1961 * active by the system (IFF_UP). At this point all resources needed
1962 * for transmit and receive operations are allocated, the interrupt
1963 * handler is registered with the OS, the watchdog timer is started,
1964 * and the stack is notified that the interface is ready.
1966 static int atl1_open(struct net_device
*netdev
)
1968 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
1971 /* allocate transmit descriptors */
1972 err
= atl1_setup_ring_resources(adapter
);
1976 err
= atl1_up(adapter
);
1983 atl1_reset(adapter
);
1988 * atl1_close - Disables a network interface
1989 * @netdev: network interface device structure
1991 * Returns 0, this is not allowed to fail
1993 * The close entry point is called when an interface is de-activated
1994 * by the OS. The hardware is still under the drivers control, but
1995 * needs to be disabled. A global MAC reset is issued to stop the
1996 * hardware, and all transmit and receive resources are freed.
1998 static int atl1_close(struct net_device
*netdev
)
2000 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2002 atl1_free_ring_resources(adapter
);
2006 #ifdef CONFIG_NET_POLL_CONTROLLER
2007 static void atl1_poll_controller(struct net_device
*netdev
)
2009 disable_irq(netdev
->irq
);
2010 atl1_intr(netdev
->irq
, netdev
);
2011 enable_irq(netdev
->irq
);
2016 * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
2017 * will assert. We do soft reset <0x1400=1> according
2018 * with the SPEC. BUT, it seemes that PCIE or DMA
2019 * state-machine will not be reset. DMAR_TO_INT will
2020 * assert again and again.
2022 static void atl1_tx_timeout_task(struct work_struct
*work
)
2024 struct atl1_adapter
*adapter
=
2025 container_of(work
, struct atl1_adapter
, tx_timeout_task
);
2026 struct net_device
*netdev
= adapter
->netdev
;
2028 netif_device_detach(netdev
);
2031 netif_device_attach(netdev
);
2035 * atl1_link_chg_task - deal with link change event Out of interrupt context
2037 static void atl1_link_chg_task(struct work_struct
*work
)
2039 struct atl1_adapter
*adapter
=
2040 container_of(work
, struct atl1_adapter
, link_chg_task
);
2041 unsigned long flags
;
2043 spin_lock_irqsave(&adapter
->lock
, flags
);
2044 atl1_check_link(adapter
);
2045 spin_unlock_irqrestore(&adapter
->lock
, flags
);
2049 * atl1_pcie_patch - Patch for PCIE module
2051 static void atl1_pcie_patch(struct atl1_adapter
*adapter
)
2055 iowrite32(value
, adapter
->hw
.hw_addr
+ 0x12FC);
2056 /* pcie flow control mode change */
2057 value
= ioread32(adapter
->hw
.hw_addr
+ 0x1008);
2059 iowrite32(value
, adapter
->hw
.hw_addr
+ 0x1008);
2063 * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
2064 * on PCI Command register is disable.
2065 * The function enable this bit.
2066 * Brackett, 2006/03/15
2068 static void atl1_via_workaround(struct atl1_adapter
*adapter
)
2070 unsigned long value
;
2072 value
= ioread16(adapter
->hw
.hw_addr
+ PCI_COMMAND
);
2073 if (value
& PCI_COMMAND_INTX_DISABLE
)
2074 value
&= ~PCI_COMMAND_INTX_DISABLE
;
2075 iowrite32(value
, adapter
->hw
.hw_addr
+ PCI_COMMAND
);
2079 * atl1_probe - Device Initialization Routine
2080 * @pdev: PCI device information struct
2081 * @ent: entry in atl1_pci_tbl
2083 * Returns 0 on success, negative on failure
2085 * atl1_probe initializes an adapter identified by a pci_dev structure.
2086 * The OS initialization, configuring of the adapter private structure,
2087 * and a hardware reset occur.
2089 static int __devinit
atl1_probe(struct pci_dev
*pdev
,
2090 const struct pci_device_id
*ent
)
2092 struct net_device
*netdev
;
2093 struct atl1_adapter
*adapter
;
2094 static int cards_found
= 0;
2095 bool pci_using_64
= true;
2098 err
= pci_enable_device(pdev
);
2102 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
2104 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
2106 dev_err(&pdev
->dev
, "no usable DMA configuration\n");
2109 pci_using_64
= false;
2111 /* Mark all PCI regions associated with PCI device
2112 * pdev as being reserved by owner atl1_driver_name
2114 err
= pci_request_regions(pdev
, atl1_driver_name
);
2116 goto err_request_regions
;
2118 /* Enables bus-mastering on the device and calls
2119 * pcibios_set_master to do the needed arch specific settings
2121 pci_set_master(pdev
);
2123 netdev
= alloc_etherdev(sizeof(struct atl1_adapter
));
2126 goto err_alloc_etherdev
;
2128 SET_MODULE_OWNER(netdev
);
2129 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2131 pci_set_drvdata(pdev
, netdev
);
2132 adapter
= netdev_priv(netdev
);
2133 adapter
->netdev
= netdev
;
2134 adapter
->pdev
= pdev
;
2135 adapter
->hw
.back
= adapter
;
2137 adapter
->hw
.hw_addr
= pci_iomap(pdev
, 0, 0);
2138 if (!adapter
->hw
.hw_addr
) {
2142 /* get device revision number */
2143 adapter
->hw
.dev_rev
= ioread16(adapter
->hw
.hw_addr
+
2144 (REG_MASTER_CTRL
+ 2));
2145 dev_info(&pdev
->dev
, "version %s\n", DRIVER_VERSION
);
2147 /* set default ring resource counts */
2148 adapter
->rfd_ring
.count
= adapter
->rrd_ring
.count
= ATL1_DEFAULT_RFD
;
2149 adapter
->tpd_ring
.count
= ATL1_DEFAULT_TPD
;
2151 adapter
->mii
.dev
= netdev
;
2152 adapter
->mii
.mdio_read
= mdio_read
;
2153 adapter
->mii
.mdio_write
= mdio_write
;
2154 adapter
->mii
.phy_id_mask
= 0x1f;
2155 adapter
->mii
.reg_num_mask
= 0x1f;
2157 netdev
->open
= &atl1_open
;
2158 netdev
->stop
= &atl1_close
;
2159 netdev
->hard_start_xmit
= &atl1_xmit_frame
;
2160 netdev
->get_stats
= &atl1_get_stats
;
2161 netdev
->set_multicast_list
= &atl1_set_multi
;
2162 netdev
->set_mac_address
= &atl1_set_mac
;
2163 netdev
->change_mtu
= &atl1_change_mtu
;
2164 netdev
->do_ioctl
= &atl1_ioctl
;
2165 netdev
->tx_timeout
= &atl1_tx_timeout
;
2166 netdev
->watchdog_timeo
= 5 * HZ
;
2167 #ifdef CONFIG_NET_POLL_CONTROLLER
2168 netdev
->poll_controller
= atl1_poll_controller
;
2170 netdev
->vlan_rx_register
= atl1_vlan_rx_register
;
2172 netdev
->ethtool_ops
= &atl1_ethtool_ops
;
2173 adapter
->bd_number
= cards_found
;
2174 adapter
->pci_using_64
= pci_using_64
;
2176 /* setup the private structure */
2177 err
= atl1_sw_init(adapter
);
2181 netdev
->features
= NETIF_F_HW_CSUM
;
2182 netdev
->features
|= NETIF_F_SG
;
2183 netdev
->features
|= (NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_RX
);
2186 * FIXME - Until tso performance gets fixed, disable the feature.
2187 * Enable it with ethtool -K if desired.
2189 /* netdev->features |= NETIF_F_TSO; */
2192 netdev
->features
|= NETIF_F_HIGHDMA
;
2194 netdev
->features
|= NETIF_F_LLTX
;
2197 * patch for some L1 of old version,
2198 * the final version of L1 may not need these
2201 /* atl1_pcie_patch(adapter); */
2203 /* really reset GPHY core */
2204 iowrite16(0, adapter
->hw
.hw_addr
+ REG_GPHY_ENABLE
);
2207 * reset the controller to
2208 * put the device in a known good starting state
2210 if (atl1_reset_hw(&adapter
->hw
)) {
2215 /* copy the MAC address out of the EEPROM */
2216 atl1_read_mac_addr(&adapter
->hw
);
2217 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
2219 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
2224 atl1_check_options(adapter
);
2226 /* pre-init the MAC, and setup link */
2227 err
= atl1_init_hw(&adapter
->hw
);
2233 atl1_pcie_patch(adapter
);
2234 /* assume we have no link for now */
2235 netif_carrier_off(netdev
);
2236 netif_stop_queue(netdev
);
2238 init_timer(&adapter
->watchdog_timer
);
2239 adapter
->watchdog_timer
.function
= &atl1_watchdog
;
2240 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
2242 init_timer(&adapter
->phy_config_timer
);
2243 adapter
->phy_config_timer
.function
= &atl1_phy_config
;
2244 adapter
->phy_config_timer
.data
= (unsigned long)adapter
;
2245 adapter
->phy_timer_pending
= false;
2247 INIT_WORK(&adapter
->tx_timeout_task
, atl1_tx_timeout_task
);
2249 INIT_WORK(&adapter
->link_chg_task
, atl1_link_chg_task
);
2251 INIT_WORK(&adapter
->pcie_dma_to_rst_task
, atl1_tx_timeout_task
);
2253 err
= register_netdev(netdev
);
2258 atl1_via_workaround(adapter
);
2262 pci_iounmap(pdev
, adapter
->hw
.hw_addr
);
2264 free_netdev(netdev
);
2266 pci_release_regions(pdev
);
2268 err_request_regions
:
2269 pci_disable_device(pdev
);
2274 * atl1_remove - Device Removal Routine
2275 * @pdev: PCI device information struct
2277 * atl1_remove is called by the PCI subsystem to alert the driver
2278 * that it should release a PCI device. The could be caused by a
2279 * Hot-Plug event, or because the driver is going to be removed from
2282 static void __devexit
atl1_remove(struct pci_dev
*pdev
)
2284 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2285 struct atl1_adapter
*adapter
;
2286 /* Device not available. Return. */
2290 adapter
= netdev_priv(netdev
);
2292 /* Some atl1 boards lack persistent storage for their MAC, and get it
2293 * from the BIOS during POST. If we've been messing with the MAC
2294 * address, we need to save the permanent one.
2296 if (memcmp(adapter
->hw
.mac_addr
, adapter
->hw
.perm_mac_addr
, ETH_ALEN
)) {
2297 memcpy(adapter
->hw
.mac_addr
, adapter
->hw
.perm_mac_addr
, ETH_ALEN
);
2298 atl1_set_mac_addr(&adapter
->hw
);
2301 iowrite16(0, adapter
->hw
.hw_addr
+ REG_GPHY_ENABLE
);
2302 unregister_netdev(netdev
);
2303 pci_iounmap(pdev
, adapter
->hw
.hw_addr
);
2304 pci_release_regions(pdev
);
2305 free_netdev(netdev
);
2306 pci_disable_device(pdev
);
2310 static int atl1_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2312 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2313 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2314 struct atl1_hw
*hw
= &adapter
->hw
;
2316 u32 wufc
= adapter
->wol
;
2318 netif_device_detach(netdev
);
2319 if (netif_running(netdev
))
2322 atl1_read_phy_reg(hw
, MII_BMSR
, (u16
*) & ctrl
);
2323 atl1_read_phy_reg(hw
, MII_BMSR
, (u16
*) & ctrl
);
2324 if (ctrl
& BMSR_LSTATUS
)
2325 wufc
&= ~ATL1_WUFC_LNKC
;
2327 /* reduce speed to 10/100M */
2329 atl1_phy_enter_power_saving(hw
);
2330 /* if resume, let driver to re- setup link */
2331 hw
->phy_configured
= false;
2332 atl1_set_mac_addr(hw
);
2333 atl1_set_multi(netdev
);
2336 /* turn on magic packet wol */
2337 if (wufc
& ATL1_WUFC_MAG
)
2338 ctrl
= WOL_MAGIC_EN
| WOL_MAGIC_PME_EN
;
2340 /* turn on Link change WOL */
2341 if (wufc
& ATL1_WUFC_LNKC
)
2342 ctrl
|= (WOL_LINK_CHG_EN
| WOL_LINK_CHG_PME_EN
);
2343 iowrite32(ctrl
, hw
->hw_addr
+ REG_WOL_CTRL
);
2345 /* turn on all-multi mode if wake on multicast is enabled */
2346 ctrl
= ioread32(hw
->hw_addr
+ REG_MAC_CTRL
);
2347 ctrl
&= ~MAC_CTRL_DBG
;
2348 ctrl
&= ~MAC_CTRL_PROMIS_EN
;
2349 if (wufc
& ATL1_WUFC_MC
)
2350 ctrl
|= MAC_CTRL_MC_ALL_EN
;
2352 ctrl
&= ~MAC_CTRL_MC_ALL_EN
;
2354 /* turn on broadcast mode if wake on-BC is enabled */
2355 if (wufc
& ATL1_WUFC_BC
)
2356 ctrl
|= MAC_CTRL_BC_EN
;
2358 ctrl
&= ~MAC_CTRL_BC_EN
;
2361 ctrl
|= MAC_CTRL_RX_EN
;
2362 iowrite32(ctrl
, hw
->hw_addr
+ REG_MAC_CTRL
);
2363 pci_enable_wake(pdev
, PCI_D3hot
, 1);
2364 pci_enable_wake(pdev
, PCI_D3cold
, 1); /* 4 == D3 cold */
2366 iowrite32(0, hw
->hw_addr
+ REG_WOL_CTRL
);
2367 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2368 pci_enable_wake(pdev
, PCI_D3cold
, 0); /* 4 == D3 cold */
2371 pci_save_state(pdev
);
2372 pci_disable_device(pdev
);
2374 pci_set_power_state(pdev
, PCI_D3hot
);
2379 static int atl1_resume(struct pci_dev
*pdev
)
2381 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2382 struct atl1_adapter
*adapter
= netdev_priv(netdev
);
2385 pci_set_power_state(pdev
, 0);
2386 pci_restore_state(pdev
);
2388 ret_val
= pci_enable_device(pdev
);
2389 pci_enable_wake(pdev
, PCI_D3hot
, 0);
2390 pci_enable_wake(pdev
, PCI_D3cold
, 0);
2392 iowrite32(0, adapter
->hw
.hw_addr
+ REG_WOL_CTRL
);
2393 atl1_reset(adapter
);
2395 if (netif_running(netdev
))
2397 netif_device_attach(netdev
);
2399 atl1_via_workaround(adapter
);
2404 #define atl1_suspend NULL
2405 #define atl1_resume NULL
2408 static struct pci_driver atl1_driver
= {
2409 .name
= atl1_driver_name
,
2410 .id_table
= atl1_pci_tbl
,
2411 .probe
= atl1_probe
,
2412 .remove
= __devexit_p(atl1_remove
),
2413 /* Power Managment Hooks */
2414 /* probably broken right now -- CHS */
2415 .suspend
= atl1_suspend
,
2416 .resume
= atl1_resume
2420 * atl1_exit_module - Driver Exit Cleanup Routine
2422 * atl1_exit_module is called just before the driver is removed
2425 static void __exit
atl1_exit_module(void)
2427 pci_unregister_driver(&atl1_driver
);
2431 * atl1_init_module - Driver Registration Routine
2433 * atl1_init_module is the first routine called when the driver is
2434 * loaded. All it does is register with the PCI subsystem.
2436 static int __init
atl1_init_module(void)
2438 return pci_register_driver(&atl1_driver
);
2441 module_init(atl1_init_module
);
2442 module_exit(atl1_exit_module
);