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ehea: Fix skb header access
[mirror_ubuntu-artful-kernel.git] / drivers / net / atl1 / atl1_main.c
CommitLineData
f3cc28c7
JC		 1/*
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>
5 *
6 * Derived from Intel e1000 driver
7 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
8 *
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)
12 * any later version.
13 *
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
17 * more details.
18 *
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.
22 *
23 * The full GNU General Public License is included in this distribution in the
24 * file called COPYING.
25 *
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
30 *
31 * Chris Snook <csnook@redhat.com>
32 * Jay Cliburn <jcliburn@gmail.com>
33 *
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:
37 *
38 * TODO:
39 * Fix TSO; tx performance is horrible with TSO enabled.
40 * Wake on LAN.
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
44 *
45 * NEEDS TESTING:
46 * VLAN
47 * multicast
48 * promiscuous mode
49 * interrupt coalescing
50 * SMP torture testing
51 */
52
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>
71#include <linux/pm.h>
72#include <linux/in.h>
73#include <linux/ip.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>
79
80#include <asm/atomic.h>
81#include <asm/byteorder.h>
82
83#include "atl1.h"
84
9cc6d14e 85#define DRIVER_VERSION "2.0.7"
f3cc28c7
JC		 86
87char atl1_driver_name[] = "atl1";
88static const char atl1_driver_string[] = "Attansic L1 Ethernet Network Driver";
89static const char atl1_copyright[] = "Copyright(c) 2005-2006 Attansic Corporation.";
90char atl1_driver_version[] = DRIVER_VERSION;
91
92MODULE_AUTHOR
93 ("Attansic Corporation <xiong_huang@attansic.com>, Chris Snook <csnook@redhat.com>, Jay Cliburn <jcliburn@gmail.com>");
94MODULE_DESCRIPTION("Attansic 1000M Ethernet Network Driver");
95MODULE_LICENSE("GPL");
96MODULE_VERSION(DRIVER_VERSION);
97
98/*
99 * atl1_pci_tbl - PCI Device ID Table
100 */
101static const struct pci_device_id atl1_pci_tbl[] = {
e81e557a 102 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1)},
f3cc28c7
JC		 103 /* required last entry */
104 {0,}
105};
106
107MODULE_DEVICE_TABLE(pci, atl1_pci_tbl);
108
109/*
110 * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
111 * @adapter: board private structure to initialize
112 *
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).
116 */
117static int __devinit atl1_sw_init(struct atl1_adapter *adapter)
118{
119 struct atl1_hw *hw = &adapter->hw;
120 struct net_device *netdev = adapter->netdev;
121 struct pci_dev *pdev = adapter->pdev;
122
123 /* PCI config space info */
124 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
125
126 hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
127 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
128
129 adapter->wol = 0;
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;
134
135 hw->phy_configured = false;
136 hw->preamble_len = 7;
137 hw->ipgt = 0x60;
138 hw->min_ifg = 0x50;
139 hw->ipgr1 = 0x40;
140 hw->ipgr2 = 0x60;
141 hw->max_retry = 0xf;
142 hw->lcol = 0x37;
143 hw->jam_ipg = 7;
144 hw->rfd_burst = 8;
145 hw->rrd_burst = 8;
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;
150 hw->tpd_burst = 4;
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;
159 hw->cmb_rrd = 4;
160 hw->cmb_tpd = 4;
161 hw->cmb_rx_timer = 1; /* about 2us */
162 hw->cmb_tx_timer = 1; /* about 2us */
163 hw->smb_timer = 100000; /* about 200ms */
164
165 atomic_set(&adapter->irq_sem, 0);
166 spin_lock_init(&adapter->lock);
167 spin_lock_init(&adapter->mb_lock);
168
169 return 0;
170}
171
172/*
173 * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
174 * @adapter: board private structure
175 *
176 * Return 0 on success, negative on failure
177 */
178s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
179{
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;
185 int size;
186 u8 offset = 0;
187
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);
193 goto err_nomem;
194 }
195 rfd_ring->buffer_info =
196 (struct atl1_buffer *)(tpd_ring->buffer_info + tpd_ring->count);
197
198 /* real ring DMA buffer */
199 ring_header->size = size = sizeof(struct tx_packet_desc) *
200 tpd_ring->count
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 */
206
207 ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
208 &ring_header->dma);
209 if (unlikely(!ring_header->desc)) {
210 printk(KERN_WARNING
211 "%s: pci_alloc_consistent failed, size = D%d\n",
212 atl1_driver_name, size);
213 goto err_nomem;
214 }
215
216 memset(ring_header->desc, 0, ring_header->size);
217
218 /* init TPD ring */
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);
226
227 /* init RFD ring */
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);
236
237 /* init RRD ring */
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);
245
246 /* init CMB */
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;
250 adapter->cmb.cmb =
251 (struct coals_msg_block *) ((u8 *) rrd_ring->desc +
252 (rrd_ring->size + offset));
253
254 /* init SMB */
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));
260
261 return ATL1_SUCCESS;
262
263err_nomem:
264 kfree(tpd_ring->buffer_info);
265 return -ENOMEM;
266}
267
268/*
269 * atl1_irq_enable - Enable default interrupt generation settings
270 * @adapter: board private structure
271 */
272static void atl1_irq_enable(struct atl1_adapter *adapter)
273{
274 if (likely(!atomic_dec_and_test(&adapter->irq_sem)))
275 iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR);
276}
277
278static void atl1_clear_phy_int(struct atl1_adapter *adapter)
279{
280 u16 phy_data;
281 unsigned long flags;
282
283 spin_lock_irqsave(&adapter->lock, flags);
284 atl1_read_phy_reg(&adapter->hw, 19, &phy_data);
285 spin_unlock_irqrestore(&adapter->lock, flags);
286}
287
288static void atl1_inc_smb(struct atl1_adapter *adapter)
289{
290 struct stats_msg_block *smb = adapter->smb.smb;
291
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 +
299 smb->tx_2_col * 2 +
300 smb->tx_late_col +
301 smb->tx_abort_col *
302 adapter->hw.max_retry);
303
304 /* Rx Errors */
305 adapter->soft_stats.rx_errors += (smb->rx_frag +
306 smb->rx_fcs_err +
307 smb->rx_len_err +
308 smb->rx_sz_ov +
309 smb->rx_rxf_ov +
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 +
316 smb->rx_rxf_ov);
317
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;
321
322 /* Tx Errors */
323 adapter->soft_stats.tx_errors += (smb->tx_late_col +
324 smb->tx_abort_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;
329
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;
338
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;
364}
365
366static void atl1_rx_checksum(struct atl1_adapter *adapter,
367 struct rx_return_desc *rrd,
368 struct sk_buff *skb)
369{
370 skb->ip_summed = CHECKSUM_NONE;
371
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",
377 atl1_driver_name);
378 return;
379 }
380 }
381
382 /* not IPv4 */
383 if (!(rrd->pkt_flg & PACKET_FLAG_IPV4))
384 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
385 return;
386
387 /* IPv4 packet */
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++;
392 return;
393 }
394
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++;
401 return;
402}
403
404/*
405 * atl1_alloc_rx_buffers - Replace used receive buffers
406 * @adapter: address of board private structure
407 */
408static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
409{
410 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
f3cc28c7
JC		 411 struct pci_dev *pdev = adapter->pdev;
412 struct page *page;
413 unsigned long offset;
414 struct atl1_buffer *buffer_info, *next_info;
415 struct sk_buff *skb;
416 u16 num_alloc = 0;
417 u16 rfd_next_to_use, next_next;
418 struct rx_free_desc *rfd_desc;
419
420 next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use);
421 if (++next_next == rfd_ring->count)
422 next_next = 0;
423 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
424 next_info = &rfd_ring->buffer_info[next_next];
425
426 while (!buffer_info->alloced && !next_info->alloced) {
427 if (buffer_info->skb) {
428 buffer_info->alloced = 1;
429 goto next;
430 }
431
432 rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use);
433
434 skb = dev_alloc_skb(adapter->rx_buffer_len + NET_IP_ALIGN);
435 if (unlikely(!skb)) { /* Better luck next round */
436 adapter->net_stats.rx_dropped++;
437 break;
438 }
439
440 /*
441 * Make buffer alignment 2 beyond a 16 byte boundary
442 * this will result in a 16 byte aligned IP header after
443 * the 14 byte MAC header is removed
444 */
445 skb_reserve(skb, NET_IP_ALIGN);
f3cc28c7
JC		 446
447 buffer_info->alloced = 1;
448 buffer_info->skb = skb;
449 buffer_info->length = (u16) adapter->rx_buffer_len;
450 page = virt_to_page(skb->data);
451 offset = (unsigned long)skb->data & ~PAGE_MASK;
452 buffer_info->dma = pci_map_page(pdev, page, offset,
453 adapter->rx_buffer_len,
454 PCI_DMA_FROMDEVICE);
455 rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
456 rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len);
457 rfd_desc->coalese = 0;
458
459next:
460 rfd_next_to_use = next_next;
461 if (unlikely(++next_next == rfd_ring->count))
462 next_next = 0;
463
464 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
465 next_info = &rfd_ring->buffer_info[next_next];
466 num_alloc++;
467 }
468
469 if (num_alloc) {
470 /*
471 * Force memory writes to complete before letting h/w
472 * know there are new descriptors to fetch. (Only
473 * applicable for weak-ordered memory model archs,
474 * such as IA-64).
475 */
476 wmb();
477 atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use);
478 }
479 return num_alloc;
480}
481
482static void atl1_intr_rx(struct atl1_adapter *adapter)
483{
484 int i, count;
485 u16 length;
486 u16 rrd_next_to_clean;
487 u32 value;
488 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
489 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
490 struct atl1_buffer *buffer_info;
491 struct rx_return_desc *rrd;
492 struct sk_buff *skb;
493
494 count = 0;
495
496 rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean);
497
498 while (1) {
499 rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean);
500 i = 1;
501 if (likely(rrd->xsz.valid)) { /* packet valid */
502chk_rrd:
503 /* check rrd status */
504 if (likely(rrd->num_buf == 1))
505 goto rrd_ok;
506
507 /* rrd seems to be bad */
508 if (unlikely(i-- > 0)) {
509 /* rrd may not be DMAed completely */
510 printk(KERN_DEBUG
511 "%s: RRD may not be DMAed completely\n",
512 atl1_driver_name);
513 udelay(1);
514 goto chk_rrd;
515 }
516 /* bad rrd */
517 printk(KERN_DEBUG "%s: bad RRD\n", atl1_driver_name);
518 /* see if update RFD index */
519 if (rrd->num_buf > 1) {
520 u16 num_buf;
521 num_buf =
522 (rrd->xsz.xsum_sz.pkt_size +
523 adapter->rx_buffer_len -
524 1) / adapter->rx_buffer_len;
525 if (rrd->num_buf == num_buf) {
526 /* clean alloc flag for bad rrd */
527 while (rfd_ring->next_to_clean !=
528 (rrd->buf_indx + num_buf)) {
529 rfd_ring->buffer_info[rfd_ring->
530 next_to_clean].alloced = 0;
531 if (++rfd_ring->next_to_clean ==
532 rfd_ring->count) {
533 rfd_ring->
534 next_to_clean = 0;
535 }
536 }
537 }
538 }
539
540 /* update rrd */
541 rrd->xsz.valid = 0;
542 if (++rrd_next_to_clean == rrd_ring->count)
543 rrd_next_to_clean = 0;
544 count++;
545 continue;
546 } else { /* current rrd still not be updated */
547
548 break;
549 }
550rrd_ok:
551 /* clean alloc flag for bad rrd */
552 while (rfd_ring->next_to_clean != rrd->buf_indx) {
553 rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced =
554 0;
555 if (++rfd_ring->next_to_clean == rfd_ring->count)
556 rfd_ring->next_to_clean = 0;
557 }
558
559 buffer_info = &rfd_ring->buffer_info[rrd->buf_indx];
560 if (++rfd_ring->next_to_clean == rfd_ring->count)
561 rfd_ring->next_to_clean = 0;
562
563 /* update rrd next to clean */
564 if (++rrd_next_to_clean == rrd_ring->count)
565 rrd_next_to_clean = 0;
566 count++;
567
568 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
569 if (!(rrd->err_flg &
570 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM
571 | ERR_FLAG_LEN))) {
572 /* packet error, don't need upstream */
573 buffer_info->alloced = 0;
574 rrd->xsz.valid = 0;
575 continue;
576 }
577 }
578
579 /* Good Receive */
580 pci_unmap_page(adapter->pdev, buffer_info->dma,
581 buffer_info->length, PCI_DMA_FROMDEVICE);
582 skb = buffer_info->skb;
583 length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size);
584
585 skb_put(skb, length - ETHERNET_FCS_SIZE);
586
587 /* Receive Checksum Offload */
588 atl1_rx_checksum(adapter, rrd, skb);
589 skb->protocol = eth_type_trans(skb, adapter->netdev);
590
591 if (adapter->vlgrp && (rrd->pkt_flg & PACKET_FLAG_VLAN_INS)) {
592 u16 vlan_tag = (rrd->vlan_tag >> 4) |
593 ((rrd->vlan_tag & 7) << 13) |
594 ((rrd->vlan_tag & 8) << 9);
595 vlan_hwaccel_rx(skb, adapter->vlgrp, vlan_tag);
596 } else
597 netif_rx(skb);
598
599 /* let protocol layer free skb */
600 buffer_info->skb = NULL;
601 buffer_info->alloced = 0;
602 rrd->xsz.valid = 0;
603
604 adapter->netdev->last_rx = jiffies;
605 }
606
607 atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean);
608
609 atl1_alloc_rx_buffers(adapter);
610
611 /* update mailbox ? */
612 if (count) {
613 u32 tpd_next_to_use;
614 u32 rfd_next_to_use;
615 u32 rrd_next_to_clean;
616
617 spin_lock(&adapter->mb_lock);
618
619 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
620 rfd_next_to_use =
621 atomic_read(&adapter->rfd_ring.next_to_use);
622 rrd_next_to_clean =
623 atomic_read(&adapter->rrd_ring.next_to_clean);
624 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
625 MB_RFD_PROD_INDX_SHIFT) |
626 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
627 MB_RRD_CONS_INDX_SHIFT) |
628 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
629 MB_TPD_PROD_INDX_SHIFT);
630 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
631 spin_unlock(&adapter->mb_lock);
632 }
633}
634
635static void atl1_intr_tx(struct atl1_adapter *adapter)
636{
637 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
638 struct atl1_buffer *buffer_info;
639 u16 sw_tpd_next_to_clean;
640 u16 cmb_tpd_next_to_clean;
641 u8 update = 0;
642
643 sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean);
644 cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx);
645
646 while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) {
647 struct tx_packet_desc *tpd;
648 update = 1;
649 tpd = ATL1_TPD_DESC(tpd_ring, sw_tpd_next_to_clean);
650 buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean];
651 if (buffer_info->dma) {
652 pci_unmap_page(adapter->pdev, buffer_info->dma,
653 buffer_info->length, PCI_DMA_TODEVICE);
654 buffer_info->dma = 0;
655 }
656
657 if (buffer_info->skb) {
658 dev_kfree_skb_irq(buffer_info->skb);
659 buffer_info->skb = NULL;
660 }
661 tpd->buffer_addr = 0;
662 tpd->desc.data = 0;
663
664 if (++sw_tpd_next_to_clean == tpd_ring->count)
665 sw_tpd_next_to_clean = 0;
666 }
667 atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean);
668
669 if (netif_queue_stopped(adapter->netdev)
670 && netif_carrier_ok(adapter->netdev))
671 netif_wake_queue(adapter->netdev);
672}
673
674static void atl1_check_for_link(struct atl1_adapter *adapter)
675{
676 struct net_device *netdev = adapter->netdev;
677 u16 phy_data = 0;
678
679 spin_lock(&adapter->lock);
680 adapter->phy_timer_pending = false;
681 atl1_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
682 atl1_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
683 spin_unlock(&adapter->lock);
684
685 /* notify upper layer link down ASAP */
686 if (!(phy_data & BMSR_LSTATUS)) { /* Link Down */
687 if (netif_carrier_ok(netdev)) { /* old link state: Up */
688 printk(KERN_INFO "%s: %s link is down\n",
689 atl1_driver_name, netdev->name);
690 adapter->link_speed = SPEED_0;
691 netif_carrier_off(netdev);
692 netif_stop_queue(netdev);
693 }
694 }
695 schedule_work(&adapter->link_chg_task);
696}
697
698/*
699 * atl1_intr - Interrupt Handler
700 * @irq: interrupt number
701 * @data: pointer to a network interface device structure
702 * @pt_regs: CPU registers structure
703 */
704static irqreturn_t atl1_intr(int irq, void *data)
705{
706 /*struct atl1_adapter *adapter = ((struct net_device *)data)->priv;*/
707 struct atl1_adapter *adapter = netdev_priv(data);
708 u32 status;
709 u8 update_rx;
710 int max_ints = 10;
711
712 status = adapter->cmb.cmb->int_stats;
713 if (!status)
714 return IRQ_NONE;
715
716 update_rx = 0;
717
718 do {
719 /* clear CMB interrupt status at once */
720 adapter->cmb.cmb->int_stats = 0;
721
722 if (status & ISR_GPHY) /* clear phy status */
723 atl1_clear_phy_int(adapter);
724
725 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
726 iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR);
727
728 /* check if SMB intr */
729 if (status & ISR_SMB)
730 atl1_inc_smb(adapter);
731
732 /* check if PCIE PHY Link down */
733 if (status & ISR_PHY_LINKDOWN) {
734 printk(KERN_DEBUG "%s: pcie phy link down %x\n",
735 atl1_driver_name, status);
736 if (netif_running(adapter->netdev)) { /* reset MAC */
737 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
738 schedule_work(&adapter->pcie_dma_to_rst_task);
739 return IRQ_HANDLED;
740 }
741 }
742
743 /* check if DMA read/write error ? */
744 if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
745 printk(KERN_DEBUG
746 "%s: pcie DMA r/w error (status = 0x%x)\n",
747 atl1_driver_name, status);
748 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
749 schedule_work(&adapter->pcie_dma_to_rst_task);
750 return IRQ_HANDLED;
751 }
752
753 /* link event */
754 if (status & ISR_GPHY) {
755 adapter->soft_stats.tx_carrier_errors++;
756 atl1_check_for_link(adapter);
757 }
758
759 /* transmit event */
760 if (status & ISR_CMB_TX)
761 atl1_intr_tx(adapter);
762
763 /* rx exception */
764 if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN |
765 ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
766 ISR_HOST_RRD_OV | ISR_CMB_RX))) {
767 if (status &
768 (ISR_RXF_OV | ISR_RFD_UNRUN | ISR_RRD_OV |
769 ISR_HOST_RFD_UNRUN | ISR_HOST_RRD_OV))
770 printk(KERN_INFO
771 "%s: rx exception: status = 0x%x\n",
772 atl1_driver_name, status);
773 atl1_intr_rx(adapter);
774 }
775
776 if (--max_ints < 0)
777 break;
778
779 } while ((status = adapter->cmb.cmb->int_stats));
780
781 /* re-enable Interrupt */
782 iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR);
783 return IRQ_HANDLED;
784}
785
786/*
787 * atl1_set_multi - Multicast and Promiscuous mode set
788 * @netdev: network interface device structure
789 *
790 * The set_multi entry point is called whenever the multicast address
791 * list or the network interface flags are updated. This routine is
792 * responsible for configuring the hardware for proper multicast,
793 * promiscuous mode, and all-multi behavior.
794 */
795static void atl1_set_multi(struct net_device *netdev)
796{
797 struct atl1_adapter *adapter = netdev_priv(netdev);
798 struct atl1_hw *hw = &adapter->hw;
799 struct dev_mc_list *mc_ptr;
800 u32 rctl;
801 u32 hash_value;
802
803 /* Check for Promiscuous and All Multicast modes */
804 rctl = ioread32(hw->hw_addr + REG_MAC_CTRL);
805 if (netdev->flags & IFF_PROMISC)
806 rctl |= MAC_CTRL_PROMIS_EN;
807 else if (netdev->flags & IFF_ALLMULTI) {
808 rctl |= MAC_CTRL_MC_ALL_EN;
809 rctl &= ~MAC_CTRL_PROMIS_EN;
810 } else
811 rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
812
813 iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL);
814
815 /* clear the old settings from the multicast hash table */
816 iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
817 iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
818
819 /* compute mc addresses' hash value ,and put it into hash table */
820 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
821 hash_value = atl1_hash_mc_addr(hw, mc_ptr->dmi_addr);
822 atl1_hash_set(hw, hash_value);
823 }
824}
825
826static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter)
827{
828 u32 value;
829 struct atl1_hw *hw = &adapter->hw;
830 struct net_device *netdev = adapter->netdev;
831 /* Config MAC CTRL Register */
832 value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN;
833 /* duplex */
834 if (FULL_DUPLEX == adapter->link_duplex)
835 value |= MAC_CTRL_DUPLX;
836 /* speed */
837 value |= ((u32) ((SPEED_1000 == adapter->link_speed) ?
838 MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
839 MAC_CTRL_SPEED_SHIFT);
840 /* flow control */
841 value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
842 /* PAD & CRC */
843 value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
844 /* preamble length */
845 value |= (((u32) adapter->hw.preamble_len
846 & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
847 /* vlan */
848 if (adapter->vlgrp)
849 value |= MAC_CTRL_RMV_VLAN;
850 /* rx checksum
851 if (adapter->rx_csum)
852 value |= MAC_CTRL_RX_CHKSUM_EN;
853 */
854 /* filter mode */
855 value |= MAC_CTRL_BC_EN;
856 if (netdev->flags & IFF_PROMISC)
857 value |= MAC_CTRL_PROMIS_EN;
858 else if (netdev->flags & IFF_ALLMULTI)
859 value |= MAC_CTRL_MC_ALL_EN;
860 /* value |= MAC_CTRL_LOOPBACK; */
861 iowrite32(value, hw->hw_addr + REG_MAC_CTRL);
862}
863
864static u32 atl1_check_link(struct atl1_adapter *adapter)
865{
866 struct atl1_hw *hw = &adapter->hw;
867 struct net_device *netdev = adapter->netdev;
868 u32 ret_val;
869 u16 speed, duplex, phy_data;
870 int reconfig = 0;
871
872 /* MII_BMSR must read twice */
873 atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
874 atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
875 if (!(phy_data & BMSR_LSTATUS)) { /* link down */
876 if (netif_carrier_ok(netdev)) { /* old link state: Up */
877 printk(KERN_INFO "%s: link is down\n",
878 atl1_driver_name);
879 adapter->link_speed = SPEED_0;
880 netif_carrier_off(netdev);
881 netif_stop_queue(netdev);
882 }
883 return ATL1_SUCCESS;
884 }
885
886 /* Link Up */
887 ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
888 if (ret_val)
889 return ret_val;
890
891 switch (hw->media_type) {
892 case MEDIA_TYPE_1000M_FULL:
893 if (speed != SPEED_1000 || duplex != FULL_DUPLEX)
894 reconfig = 1;
895 break;
896 case MEDIA_TYPE_100M_FULL:
897 if (speed != SPEED_100 || duplex != FULL_DUPLEX)
898 reconfig = 1;
899 break;
900 case MEDIA_TYPE_100M_HALF:
901 if (speed != SPEED_100 || duplex != HALF_DUPLEX)
902 reconfig = 1;
903 break;
904 case MEDIA_TYPE_10M_FULL:
905 if (speed != SPEED_10 || duplex != FULL_DUPLEX)
906 reconfig = 1;
907 break;
908 case MEDIA_TYPE_10M_HALF:
909 if (speed != SPEED_10 || duplex != HALF_DUPLEX)
910 reconfig = 1;
911 break;
912 }
913
914 /* link result is our setting */
915 if (!reconfig) {
916 if (adapter->link_speed != speed
917 || adapter->link_duplex != duplex) {
918 adapter->link_speed = speed;
919 adapter->link_duplex = duplex;
920 atl1_setup_mac_ctrl(adapter);
921 printk(KERN_INFO "%s: %s link is up %d Mbps %s\n",
922 atl1_driver_name, netdev->name,
923 adapter->link_speed,
924 adapter->link_duplex ==
925 FULL_DUPLEX ? "full duplex" : "half duplex");
926 }
927 if (!netif_carrier_ok(netdev)) { /* Link down -> Up */
928 netif_carrier_on(netdev);
929 netif_wake_queue(netdev);
930 }
931 return ATL1_SUCCESS;
932 }
933
934 /* change orignal link status */
935 if (netif_carrier_ok(netdev)) {
936 adapter->link_speed = SPEED_0;
937 netif_carrier_off(netdev);
938 netif_stop_queue(netdev);
939 }
940
941 if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR &&
942 hw->media_type != MEDIA_TYPE_1000M_FULL) {
943 switch (hw->media_type) {
944 case MEDIA_TYPE_100M_FULL:
945 phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
946 MII_CR_RESET;
947 break;
948 case MEDIA_TYPE_100M_HALF:
949 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
950 break;
951 case MEDIA_TYPE_10M_FULL:
952 phy_data =
953 MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
954 break;
955 default: /* MEDIA_TYPE_10M_HALF: */
956 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
957 break;
958 }
959 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
960 return ATL1_SUCCESS;
961 }
962
963 /* auto-neg, insert timer to re-config phy */
964 if (!adapter->phy_timer_pending) {
965 adapter->phy_timer_pending = true;
966 mod_timer(&adapter->phy_config_timer, jiffies + 3 * HZ);
967 }
968
969 return ATL1_SUCCESS;
970}
971
972static void set_flow_ctrl_old(struct atl1_adapter *adapter)
973{
974 u32 hi, lo, value;
975
976 /* RFD Flow Control */
977 value = adapter->rfd_ring.count;
978 hi = value / 16;
979 if (hi < 2)
980 hi = 2;
981 lo = value * 7 / 8;
982
983 value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
984 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
985 iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
986
987 /* RRD Flow Control */
988 value = adapter->rrd_ring.count;
989 lo = value / 16;
990 hi = value * 7 / 8;
991 if (lo < 2)
992 lo = 2;
993 value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
994 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
995 iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
996}
997
998static void set_flow_ctrl_new(struct atl1_hw *hw)
999{
1000 u32 hi, lo, value;
1001
1002 /* RXF Flow Control */
1003 value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN);
1004 lo = value / 16;
1005 if (lo < 192)
1006 lo = 192;
1007 hi = value * 7 / 8;
1008 if (hi < lo)
1009 hi = lo + 16;
1010 value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1011 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1012 iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1013
1014 /* RRD Flow Control */
1015 value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN);
1016 lo = value / 8;
1017 hi = value * 7 / 8;
1018 if (lo < 2)
1019 lo = 2;
1020 if (hi < lo)
1021 hi = lo + 3;
1022 value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1023 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1024 iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1025}
1026
1027/*
1028 * atl1_configure - Configure Transmit&Receive Unit after Reset
1029 * @adapter: board private structure
1030 *
1031 * Configure the Tx /Rx unit of the MAC after a reset.
1032 */
1033static u32 atl1_configure(struct atl1_adapter *adapter)
1034{
1035 struct atl1_hw *hw = &adapter->hw;
1036 u32 value;
1037
1038 /* clear interrupt status */
1039 iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR);
1040
1041 /* set MAC Address */
1042 value = (((u32) hw->mac_addr[2]) << 24) |
1043 (((u32) hw->mac_addr[3]) << 16) |
1044 (((u32) hw->mac_addr[4]) << 8) |
1045 (((u32) hw->mac_addr[5]));
1046 iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
1047 value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
1048 iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4));
1049
1050 /* tx / rx ring */
1051
1052 /* HI base address */
1053 iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32),
1054 hw->hw_addr + REG_DESC_BASE_ADDR_HI);
1055 /* LO base address */
1056 iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL),
1057 hw->hw_addr + REG_DESC_RFD_ADDR_LO);
1058 iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL),
1059 hw->hw_addr + REG_DESC_RRD_ADDR_LO);
1060 iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL),
1061 hw->hw_addr + REG_DESC_TPD_ADDR_LO);
1062 iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL),
1063 hw->hw_addr + REG_DESC_CMB_ADDR_LO);
1064 iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL),
1065 hw->hw_addr + REG_DESC_SMB_ADDR_LO);
1066
1067 /* element count */
1068 value = adapter->rrd_ring.count;
1069 value <<= 16;
1070 value += adapter->rfd_ring.count;
1071 iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE);
1072 iowrite32(adapter->tpd_ring.count, hw->hw_addr + REG_DESC_TPD_RING_SIZE);
1073
1074 /* Load Ptr */
1075 iowrite32(1, hw->hw_addr + REG_LOAD_PTR);
1076
1077 /* config Mailbox */
1078 value = ((atomic_read(&adapter->tpd_ring.next_to_use)
1079 & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) |
1080 ((atomic_read(&adapter->rrd_ring.next_to_clean)
1081 & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) |
1082 ((atomic_read(&adapter->rfd_ring.next_to_use)
1083 & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT);
1084 iowrite32(value, hw->hw_addr + REG_MAILBOX);
1085
1086 /* config IPG/IFG */
1087 value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK)
1088 << MAC_IPG_IFG_IPGT_SHIFT) |
1089 (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK)
1090 << MAC_IPG_IFG_MIFG_SHIFT) |
1091 (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK)
1092 << MAC_IPG_IFG_IPGR1_SHIFT) |
1093 (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK)
1094 << MAC_IPG_IFG_IPGR2_SHIFT);
1095 iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG);
1096
1097 /* config Half-Duplex Control */
1098 value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) |
1099 (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK)
1100 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) |
1101 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN |
1102 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) |
1103 (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK)
1104 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT);
1105 iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL);
1106
1107 /* set Interrupt Moderator Timer */
1108 iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT);
1109 iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL);
1110
1111 /* set Interrupt Clear Timer */
1112 iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER);
1113
1114 /* set MTU, 4 : VLAN */
1115 iowrite32(hw->max_frame_size + 4, hw->hw_addr + REG_MTU);
1116
1117 /* jumbo size & rrd retirement timer */
1118 value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK)
1119 << RXQ_JMBOSZ_TH_SHIFT) |
1120 (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK)
1121 << RXQ_JMBO_LKAH_SHIFT) |
1122 (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK)
1123 << RXQ_RRD_TIMER_SHIFT);
1124 iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM);
1125
1126 /* Flow Control */
1127 switch (hw->dev_rev) {
1128 case 0x8001:
1129 case 0x9001:
1130 case 0x9002:
1131 case 0x9003:
1132 set_flow_ctrl_old(adapter);
1133 break;
1134 default:
1135 set_flow_ctrl_new(hw);
1136 break;
1137 }
1138
1139 /* config TXQ */
1140 value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK)
1141 << TXQ_CTRL_TPD_BURST_NUM_SHIFT) |
1142 (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK)
1143 << TXQ_CTRL_TXF_BURST_NUM_SHIFT) |
1144 (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK)
1145 << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE | TXQ_CTRL_EN;
1146 iowrite32(value, hw->hw_addr + REG_TXQ_CTRL);
1147
1148 /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
1149 value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK)
1150 << TX_JUMBO_TASK_TH_SHIFT) |
1151 (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK)
1152 << TX_TPD_MIN_IPG_SHIFT);
1153 iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG);
1154
1155 /* config RXQ */
1156 value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK)
1157 << RXQ_CTRL_RFD_BURST_NUM_SHIFT) |
1158 (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK)
1159 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) |
1160 (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK)
1161 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) |
1162 RXQ_CTRL_CUT_THRU_EN | RXQ_CTRL_EN;
1163 iowrite32(value, hw->hw_addr + REG_RXQ_CTRL);
1164
1165 /* config DMA Engine */
1166 value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
1167 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
1168 ((((u32) hw->dmaw_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
1169 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
1170 DMA_CTRL_DMAR_EN | DMA_CTRL_DMAW_EN;
1171 value |= (u32) hw->dma_ord;
1172 if (atl1_rcb_128 == hw->rcb_value)
1173 value |= DMA_CTRL_RCB_VALUE;
1174 iowrite32(value, hw->hw_addr + REG_DMA_CTRL);
1175
1176 /* config CMB / SMB */
1177 value = hw->cmb_rrd | ((u32) hw->cmb_tpd << 16);
1178 iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH);
1179 value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16);
1180 iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER);
1181 iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER);
1182
1183 /* --- enable CMB / SMB */
1184 value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN;
1185 iowrite32(value, hw->hw_addr + REG_CSMB_CTRL);
1186
1187 value = ioread32(adapter->hw.hw_addr + REG_ISR);
1188 if (unlikely((value & ISR_PHY_LINKDOWN) != 0))
1189 value = 1; /* config failed */
1190 else
1191 value = 0;
1192
1193 /* clear all interrupt status */
1194 iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR);
1195 iowrite32(0, adapter->hw.hw_addr + REG_ISR);
1196 return value;
1197}
1198
1199/*
1200 * atl1_irq_disable - Mask off interrupt generation on the NIC
1201 * @adapter: board private structure
1202 */
1203static void atl1_irq_disable(struct atl1_adapter *adapter)
1204{
1205 atomic_inc(&adapter->irq_sem);
1206 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
1207 ioread32(adapter->hw.hw_addr + REG_IMR);
1208 synchronize_irq(adapter->pdev->irq);
1209}
1210
1211static void atl1_vlan_rx_register(struct net_device *netdev,
1212 struct vlan_group *grp)
1213{
1214 struct atl1_adapter *adapter = netdev_priv(netdev);
1215 unsigned long flags;
1216 u32 ctrl;
1217
1218 spin_lock_irqsave(&adapter->lock, flags);
1219 /* atl1_irq_disable(adapter); */
1220 adapter->vlgrp = grp;
1221
1222 if (grp) {
1223 /* enable VLAN tag insert/strip */
1224 ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
1225 ctrl |= MAC_CTRL_RMV_VLAN;
1226 iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
1227 } else {
1228 /* disable VLAN tag insert/strip */
1229 ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
1230 ctrl &= ~MAC_CTRL_RMV_VLAN;
1231 iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
1232 }
1233
1234 /* atl1_irq_enable(adapter); */
1235 spin_unlock_irqrestore(&adapter->lock, flags);
1236}
1237
1238/* FIXME: justify or remove -- CHS */
1239static void atl1_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1240{
1241 /* We don't do Vlan filtering */
1242 return;
1243}
1244
1245/* FIXME: this looks wrong too -- CHS */
1246static void atl1_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1247{
1248 struct atl1_adapter *adapter = netdev_priv(netdev);
1249 unsigned long flags;
1250
1251 spin_lock_irqsave(&adapter->lock, flags);
1252 /* atl1_irq_disable(adapter); */
5c15bdec 1253 vlan_group_set_device(adapter->vlgrp, vid, NULL);
f3cc28c7
JC		 1254 /* atl1_irq_enable(adapter); */
1255 spin_unlock_irqrestore(&adapter->lock, flags);
1256 /* We don't do Vlan filtering */
1257 return;
1258}
1259
1260static void atl1_restore_vlan(struct atl1_adapter *adapter)
1261{
1262 atl1_vlan_rx_register(adapter->netdev, adapter->vlgrp);
1263 if (adapter->vlgrp) {
1264 u16 vid;
1265 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
5c15bdec 1266 if (!vlan_group_get_device(adapter->vlgrp, vid))
f3cc28c7
JC		 1267 continue;
1268 atl1_vlan_rx_add_vid(adapter->netdev, vid);
1269 }
1270 }
1271}
1272
1273static u16 tpd_avail(struct atl1_tpd_ring *tpd_ring)
1274{
1275 u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
1276 u16 next_to_use = atomic_read(&tpd_ring->next_to_use);
1277 return ((next_to_clean >
1278 next_to_use) ? next_to_clean - next_to_use -
1279 1 : tpd_ring->count + next_to_clean - next_to_use - 1);
1280}
1281
1282static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
1283 struct tso_param *tso)
1284{
1285 /* We enter this function holding a spinlock. */
1286 u8 ipofst;
1287 int err;
1288
1289 if (skb_shinfo(skb)->gso_size) {
1290 if (skb_header_cloned(skb)) {
1291 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
1292 if (unlikely(err))
1293 return err;
1294 }
1295
1296 if (skb->protocol == ntohs(ETH_P_IP)) {
eddc9ec5
ACM		 1297 struct iphdr *iph = ip_hdr(skb);
1298
1299 iph->tot_len = 0;
1300 iph->check = 0;
aa8223c7
ACM		 1301 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1302 iph->daddr, 0,
1303 IPPROTO_TCP,
1304 0);
bbe735e4 1305 ipofst = skb_network_offset(skb);
f3cc28c7
JC		 1306 if (ipofst != ENET_HEADER_SIZE) /* 802.3 frame */
1307 tso->tsopl |= 1 << TSO_PARAM_ETHTYPE_SHIFT;
1308
eddc9ec5 1309 tso->tsopl |= (iph->ihl &
f3cc28c7 1310 CSUM_PARAM_IPHL_MASK) << CSUM_PARAM_IPHL_SHIFT;
ab6a5bb6 1311 tso->tsopl |= (tcp_hdrlen(skb) &
f3cc28c7
JC		 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;
1318 return true;
1319 }
1320 }
1321 return false;
1322}
1323
1324static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb,
1325 struct csum_param *csum)
1326{
1327 u8 css, cso;
1328
1329 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
ea2ae17d 1330 cso = skb_transport_offset(skb);
628592cc 1331 css = cso + skb->csum_offset;
f3cc28c7
JC		 1332 if (unlikely(cso & 0x1)) {
1333 printk(KERN_DEBUG "%s: payload offset != even number\n",
1334 atl1_driver_name);
1335 return -1;
1336 }
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;
1342 return true;
1343 }
1344
1345 return true;
1346}
1347
1348static void atl1_tx_map(struct atl1_adapter *adapter,
1349 struct sk_buff *skb, bool tcp_seg)
1350{
1351 /* We enter this function holding a spinlock. */
1352 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1353 struct atl1_buffer *buffer_info;
1354 struct page *page;
1355 int first_buf_len = skb->len;
1356 unsigned long offset;
1357 unsigned int nr_frags;
1358 unsigned int f;
1359 u16 tpd_next_to_use;
1360 u16 proto_hdr_len;
1361 u16 i, m, len12;
1362
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))
1368 BUG();
1369 buffer_info->skb = NULL; /* put skb in last TPD */
1370
1371 if (tcp_seg) {
1372 /* TSO/GSO */
ab6a5bb6 1373 proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
f3cc28c7
JC		 1374 buffer_info->length = proto_hdr_len;
1375 page = virt_to_page(skb->data);
1376 offset = (unsigned long)skb->data & ~PAGE_MASK;
1377 buffer_info->dma = pci_map_page(adapter->pdev, page,
1378 offset, proto_hdr_len,
1379 PCI_DMA_TODEVICE);
1380
1381 if (++tpd_next_to_use == tpd_ring->count)
1382 tpd_next_to_use = 0;
1383
1384 if (first_buf_len > proto_hdr_len) {
1385 len12 = first_buf_len - proto_hdr_len;
1386 m = (len12 + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN;
1387 for (i = 0; i < m; i++) {
1388 buffer_info =
1389 &tpd_ring->buffer_info[tpd_next_to_use];
1390 buffer_info->skb = NULL;
1391 buffer_info->length =
1392 (MAX_TX_BUF_LEN >=
1393 len12) ? MAX_TX_BUF_LEN : len12;
1394 len12 -= buffer_info->length;
1395 page = virt_to_page(skb->data +
1396 (proto_hdr_len +
1397 i * MAX_TX_BUF_LEN));
1398 offset = (unsigned long)(skb->data +
1399 (proto_hdr_len +
1400 i * MAX_TX_BUF_LEN)) &
1401 ~PAGE_MASK;
1402 buffer_info->dma =
1403 pci_map_page(adapter->pdev, page, offset,
1404 buffer_info->length,
1405 PCI_DMA_TODEVICE);
1406 if (++tpd_next_to_use == tpd_ring->count)
1407 tpd_next_to_use = 0;
1408 }
1409 }
1410 } else {
1411 /* not TSO/GSO */
1412 buffer_info->length = first_buf_len;
1413 page = virt_to_page(skb->data);
1414 offset = (unsigned long)skb->data & ~PAGE_MASK;
1415 buffer_info->dma = pci_map_page(adapter->pdev, page,
1416 offset, first_buf_len,
1417 PCI_DMA_TODEVICE);
1418 if (++tpd_next_to_use == tpd_ring->count)
1419 tpd_next_to_use = 0;
1420 }
1421
1422 for (f = 0; f < nr_frags; f++) {
1423 struct skb_frag_struct *frag;
1424 u16 lenf, i, m;
1425
1426 frag = &skb_shinfo(skb)->frags[f];
1427 lenf = frag->size;
1428
1429 m = (lenf + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN;
1430 for (i = 0; i < m; i++) {
1431 buffer_info = &tpd_ring->buffer_info[tpd_next_to_use];
1432 if (unlikely(buffer_info->skb))
1433 BUG();
1434 buffer_info->skb = NULL;
1435 buffer_info->length =
1436 (lenf > MAX_TX_BUF_LEN) ? MAX_TX_BUF_LEN : lenf;
1437 lenf -= buffer_info->length;
1438 buffer_info->dma =
1439 pci_map_page(adapter->pdev, frag->page,
1440 frag->page_offset + i * MAX_TX_BUF_LEN,
1441 buffer_info->length, PCI_DMA_TODEVICE);
1442
1443 if (++tpd_next_to_use == tpd_ring->count)
1444 tpd_next_to_use = 0;
1445 }
1446 }
1447
1448 /* last tpd's buffer-info */
1449 buffer_info->skb = skb;
1450}
1451
1452static void atl1_tx_queue(struct atl1_adapter *adapter, int count,
1453 union tpd_descr *descr)
1454{
1455 /* We enter this function holding a spinlock. */
1456 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1457 int j;
1458 u32 val;
1459 struct atl1_buffer *buffer_info;
1460 struct tx_packet_desc *tpd;
1461 u16 tpd_next_to_use = atomic_read(&tpd_ring->next_to_use);
1462
1463 for (j = 0; j < count; j++) {
1464 buffer_info = &tpd_ring->buffer_info[tpd_next_to_use];
1465 tpd = ATL1_TPD_DESC(&adapter->tpd_ring, tpd_next_to_use);
1466 tpd->desc.csum.csumpu = descr->csum.csumpu;
1467 tpd->desc.csum.csumpl = descr->csum.csumpl;
1468 tpd->desc.tso.tsopu = descr->tso.tsopu;
1469 tpd->desc.tso.tsopl = descr->tso.tsopl;
1470 tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
1471 tpd->desc.data = descr->data;
1472 tpd->desc.csum.csumpu |= (cpu_to_le16(buffer_info->length) &
1473 CSUM_PARAM_BUFLEN_MASK) << CSUM_PARAM_BUFLEN_SHIFT;
1474
1475 val = (descr->tso.tsopl >> TSO_PARAM_SEGMENT_SHIFT) &
1476 TSO_PARAM_SEGMENT_MASK;
1477 if (val && !j)
1478 tpd->desc.tso.tsopl |= 1 << TSO_PARAM_HDRFLAG_SHIFT;
1479
1480 if (j == (count - 1))
1481 tpd->desc.csum.csumpl |= 1 << CSUM_PARAM_EOP_SHIFT;
1482
1483 if (++tpd_next_to_use == tpd_ring->count)
1484 tpd_next_to_use = 0;
1485 }
1486 /*
1487 * Force memory writes to complete before letting h/w
1488 * know there are new descriptors to fetch. (Only
1489 * applicable for weak-ordered memory model archs,
1490 * such as IA-64).
1491 */
1492 wmb();
1493
1494 atomic_set(&tpd_ring->next_to_use, (int)tpd_next_to_use);
1495}
1496
1497static void atl1_update_mailbox(struct atl1_adapter *adapter)
1498{
1499 unsigned long flags;
1500 u32 tpd_next_to_use;
1501 u32 rfd_next_to_use;
1502 u32 rrd_next_to_clean;
1503 u32 value;
1504
1505 spin_lock_irqsave(&adapter->mb_lock, flags);
1506
1507 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
1508 rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use);
1509 rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean);
1510
1511 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
1512 MB_RFD_PROD_INDX_SHIFT) |
1513 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
1514 MB_RRD_CONS_INDX_SHIFT) |
1515 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
1516 MB_TPD_PROD_INDX_SHIFT);
1517 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
1518
1519 spin_unlock_irqrestore(&adapter->mb_lock, flags);
1520}
1521
1522static int atl1_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1523{
1524 struct atl1_adapter *adapter = netdev_priv(netdev);
1525 int len = skb->len;
1526 int tso;
1527 int count = 1;
1528 int ret_val;
1529 u32 val;
1530 union tpd_descr param;
1531 u16 frag_size;
1532 u16 vlan_tag;
1533 unsigned long flags;
1534 unsigned int nr_frags = 0;
1535 unsigned int mss = 0;
1536 unsigned int f;
1537 unsigned int proto_hdr_len;
1538
1539 len -= skb->data_len;
1540
1541 if (unlikely(skb->len == 0)) {
1542 dev_kfree_skb_any(skb);
1543 return NETDEV_TX_OK;
1544 }
1545
1546 param.data = 0;
1547 param.tso.tsopu = 0;
1548 param.tso.tsopl = 0;
1549 param.csum.csumpu = 0;
1550 param.csum.csumpl = 0;
1551
1552 /* nr_frags will be nonzero if we're doing scatter/gather (SG) */
1553 nr_frags = skb_shinfo(skb)->nr_frags;
1554 for (f = 0; f < nr_frags; f++) {
1555 frag_size = skb_shinfo(skb)->frags[f].size;
1556 if (frag_size)
1557 count +=
1558 (frag_size + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN;
1559 }
1560
1561 /* mss will be nonzero if we're doing segment offload (TSO/GSO) */
1562 mss = skb_shinfo(skb)->gso_size;
1563 if (mss) {
7ccec1b9 1564 if (skb->protocol == htons(ETH_P_IP)) {
ea2ae17d 1565 proto_hdr_len = (skb_transport_offset(skb) +
ab6a5bb6 1566 tcp_hdrlen(skb));
f3cc28c7
JC		 1567 if (unlikely(proto_hdr_len > len)) {
1568 dev_kfree_skb_any(skb);
1569 return NETDEV_TX_OK;
1570 }
1571 /* need additional TPD ? */
1572 if (proto_hdr_len != len)
1573 count += (len - proto_hdr_len +
1574 MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN;
1575 }
1576 }
1577
1578 local_irq_save(flags);
1579 if (!spin_trylock(&adapter->lock)) {
1580 /* Can't get lock - tell upper layer to requeue */
1581 local_irq_restore(flags);
1582 printk(KERN_DEBUG "%s: TX locked\n", atl1_driver_name);
1583 return NETDEV_TX_LOCKED;
1584 }
1585
1586 if (tpd_avail(&adapter->tpd_ring) < count) {
1587 /* not enough descriptors */
1588 netif_stop_queue(netdev);
1589 spin_unlock_irqrestore(&adapter->lock, flags);
1590 printk(KERN_DEBUG "%s: TX busy\n", atl1_driver_name);
1591 return NETDEV_TX_BUSY;
1592 }
1593
1594 param.data = 0;
1595
1596 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
1597 vlan_tag = vlan_tx_tag_get(skb);
1598 vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) |
1599 ((vlan_tag >> 9) & 0x8);
1600 param.csum.csumpl |= 1 << CSUM_PARAM_INSVLAG_SHIFT;
1601 param.csum.csumpu |= (vlan_tag & CSUM_PARAM_VALANTAG_MASK) <<
1602 CSUM_PARAM_VALAN_SHIFT;
1603 }
1604
1605 tso = atl1_tso(adapter, skb, &param.tso);
1606 if (tso < 0) {
1607 spin_unlock_irqrestore(&adapter->lock, flags);
1608 dev_kfree_skb_any(skb);
1609 return NETDEV_TX_OK;
1610 }
1611
1612 if (!tso) {
1613 ret_val = atl1_tx_csum(adapter, skb, &param.csum);
1614 if (ret_val < 0) {
1615 spin_unlock_irqrestore(&adapter->lock, flags);
1616 dev_kfree_skb_any(skb);
1617 return NETDEV_TX_OK;
1618 }
1619 }
1620
1621 val = (param.csum.csumpl >> CSUM_PARAM_SEGMENT_SHIFT) &
1622 CSUM_PARAM_SEGMENT_MASK;
1623 atl1_tx_map(adapter, skb, 1 == val);
1624 atl1_tx_queue(adapter, count, &param);
1625 netdev->trans_start = jiffies;
1626 spin_unlock_irqrestore(&adapter->lock, flags);
1627 atl1_update_mailbox(adapter);
1628 return NETDEV_TX_OK;
1629}
1630
1631/*
1632 * atl1_get_stats - Get System Network Statistics
1633 * @netdev: network interface device structure
1634 *
1635 * Returns the address of the device statistics structure.
1636 * The statistics are actually updated from the timer callback.
1637 */
1638static struct net_device_stats *atl1_get_stats(struct net_device *netdev)
1639{
1640 struct atl1_adapter *adapter = netdev_priv(netdev);
1641 return &adapter->net_stats;
1642}
1643
1644/*
1645 * atl1_clean_rx_ring - Free RFD Buffers
1646 * @adapter: board private structure
1647 */
1648static void atl1_clean_rx_ring(struct atl1_adapter *adapter)
1649{
1650 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1651 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1652 struct atl1_buffer *buffer_info;
1653 struct pci_dev *pdev = adapter->pdev;
1654 unsigned long size;
1655 unsigned int i;
1656
1657 /* Free all the Rx ring sk_buffs */
1658 for (i = 0; i < rfd_ring->count; i++) {
1659 buffer_info = &rfd_ring->buffer_info[i];
1660 if (buffer_info->dma) {
1661 pci_unmap_page(pdev,
1662 buffer_info->dma,
1663 buffer_info->length,
1664 PCI_DMA_FROMDEVICE);
1665 buffer_info->dma = 0;
1666 }
1667 if (buffer_info->skb) {
1668 dev_kfree_skb(buffer_info->skb);
1669 buffer_info->skb = NULL;
1670 }
1671 }
1672
1673 size = sizeof(struct atl1_buffer) * rfd_ring->count;
1674 memset(rfd_ring->buffer_info, 0, size);
1675
1676 /* Zero out the descriptor ring */
1677 memset(rfd_ring->desc, 0, rfd_ring->size);
1678
1679 rfd_ring->next_to_clean = 0;
1680 atomic_set(&rfd_ring->next_to_use, 0);
1681
1682 rrd_ring->next_to_use = 0;
1683 atomic_set(&rrd_ring->next_to_clean, 0);
1684}
1685
1686/*
1687 * atl1_clean_tx_ring - Free Tx Buffers
1688 * @adapter: board private structure
1689 */
1690static void atl1_clean_tx_ring(struct atl1_adapter *adapter)
1691{
1692 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1693 struct atl1_buffer *buffer_info;
1694 struct pci_dev *pdev = adapter->pdev;
1695 unsigned long size;
1696 unsigned int i;
1697
1698 /* Free all the Tx ring sk_buffs */
1699 for (i = 0; i < tpd_ring->count; i++) {
1700 buffer_info = &tpd_ring->buffer_info[i];
1701 if (buffer_info->dma) {
1702 pci_unmap_page(pdev, buffer_info->dma,
1703 buffer_info->length, PCI_DMA_TODEVICE);
1704 buffer_info->dma = 0;
1705 }
1706 }
1707
1708 for (i = 0; i < tpd_ring->count; i++) {
1709 buffer_info = &tpd_ring->buffer_info[i];
1710 if (buffer_info->skb) {
1711 dev_kfree_skb_any(buffer_info->skb);
1712 buffer_info->skb = NULL;
1713 }
1714 }
1715
1716 size = sizeof(struct atl1_buffer) * tpd_ring->count;
1717 memset(tpd_ring->buffer_info, 0, size);
1718
1719 /* Zero out the descriptor ring */
1720 memset(tpd_ring->desc, 0, tpd_ring->size);
1721
1722 atomic_set(&tpd_ring->next_to_use, 0);
1723 atomic_set(&tpd_ring->next_to_clean, 0);
1724}
1725
1726/*
1727 * atl1_free_ring_resources - Free Tx / RX descriptor Resources
1728 * @adapter: board private structure
1729 *
1730 * Free all transmit software resources
1731 */
1732void atl1_free_ring_resources(struct atl1_adapter *adapter)
1733{
1734 struct pci_dev *pdev = adapter->pdev;
1735 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1736 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1737 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1738 struct atl1_ring_header *ring_header = &adapter->ring_header;
1739
1740 atl1_clean_tx_ring(adapter);
1741 atl1_clean_rx_ring(adapter);
1742
1743 kfree(tpd_ring->buffer_info);
1744 pci_free_consistent(pdev, ring_header->size, ring_header->desc,
1745 ring_header->dma);
1746
1747 tpd_ring->buffer_info = NULL;
1748 tpd_ring->desc = NULL;
1749 tpd_ring->dma = 0;
1750
1751 rfd_ring->buffer_info = NULL;
1752 rfd_ring->desc = NULL;
1753 rfd_ring->dma = 0;
1754
1755 rrd_ring->desc = NULL;
1756 rrd_ring->dma = 0;
1757}
1758
1759s32 atl1_up(struct atl1_adapter *adapter)
1760{
1761 struct net_device *netdev = adapter->netdev;
1762 int err;
1763 int irq_flags = IRQF_SAMPLE_RANDOM;
1764
1765 /* hardware has been reset, we need to reload some things */
1766 atl1_set_multi(netdev);
1767 atl1_restore_vlan(adapter);
1768 err = atl1_alloc_rx_buffers(adapter);
1769 if (unlikely(!err)) /* no RX BUFFER allocated */
1770 return -ENOMEM;
1771
1772 if (unlikely(atl1_configure(adapter))) {
1773 err = -EIO;
1774 goto err_up;
1775 }
1776
1777 err = pci_enable_msi(adapter->pdev);
1778 if (err) {
1779 dev_info(&adapter->pdev->dev,
1780 "Unable to enable MSI: %d\n", err);
1781 irq_flags |= IRQF_SHARED;
1782 }
1783
1784 err = request_irq(adapter->pdev->irq, &atl1_intr, irq_flags,
1785 netdev->name, netdev);
1786 if (unlikely(err))
1787 goto err_up;
1788
1789 mod_timer(&adapter->watchdog_timer, jiffies);
1790 atl1_irq_enable(adapter);
1791 atl1_check_link(adapter);
1792 return 0;
1793
1794 /* FIXME: unreachable code! -- CHS */
1795 /* free irq disable any interrupt */
1796 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
1797 free_irq(adapter->pdev->irq, netdev);
1798
1799err_up:
1800 pci_disable_msi(adapter->pdev);
1801 /* free rx_buffers */
1802 atl1_clean_rx_ring(adapter);
1803 return err;
1804}
1805
1806void atl1_down(struct atl1_adapter *adapter)
1807{
1808 struct net_device *netdev = adapter->netdev;
1809
1810 del_timer_sync(&adapter->watchdog_timer);
1811 del_timer_sync(&adapter->phy_config_timer);
1812 adapter->phy_timer_pending = false;
1813
1814 atl1_irq_disable(adapter);
1815 free_irq(adapter->pdev->irq, netdev);
1816 pci_disable_msi(adapter->pdev);
1817 atl1_reset_hw(&adapter->hw);
1818 adapter->cmb.cmb->int_stats = 0;
1819
1820 adapter->link_speed = SPEED_0;
1821 adapter->link_duplex = -1;
1822 netif_carrier_off(netdev);
1823 netif_stop_queue(netdev);
1824
1825 atl1_clean_tx_ring(adapter);
1826 atl1_clean_rx_ring(adapter);
1827}
1828
1829/*
1830 * atl1_change_mtu - Change the Maximum Transfer Unit
1831 * @netdev: network interface device structure
1832 * @new_mtu: new value for maximum frame size
1833 *
1834 * Returns 0 on success, negative on failure
1835 */
1836static int atl1_change_mtu(struct net_device *netdev, int new_mtu)
1837{
1838 struct atl1_adapter *adapter = netdev_priv(netdev);
1839 int old_mtu = netdev->mtu;
1840 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
1841
1842 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
1843 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
1844 printk(KERN_WARNING "%s: invalid MTU setting\n",
1845 atl1_driver_name);
1846 return -EINVAL;
1847 }
1848
1849 adapter->hw.max_frame_size = max_frame;
1850 adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3;
1851 adapter->rx_buffer_len = (max_frame + 7) & ~7;
1852 adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;
1853
1854 netdev->mtu = new_mtu;
1855 if ((old_mtu != new_mtu) && netif_running(netdev)) {
1856 atl1_down(adapter);
1857 atl1_up(adapter);
1858 }
1859
1860 return 0;
1861}
1862
1863/*
1864 * atl1_set_mac - Change the Ethernet Address of the NIC
1865 * @netdev: network interface device structure
1866 * @p: pointer to an address structure
1867 *
1868 * Returns 0 on success, negative on failure
1869 */
1870static int atl1_set_mac(struct net_device *netdev, void *p)
1871{
1872 struct atl1_adapter *adapter = netdev_priv(netdev);
1873 struct sockaddr *addr = p;
1874
1875 if (netif_running(netdev))
1876 return -EBUSY;
1877
1878 if (!is_valid_ether_addr(addr->sa_data))
1879 return -EADDRNOTAVAIL;
1880
1881 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1882 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
1883
1884 atl1_set_mac_addr(&adapter->hw);
1885 return 0;
1886}
1887
1888/*
1889 * atl1_watchdog - Timer Call-back
1890 * @data: pointer to netdev cast into an unsigned long
1891 */
1892static void atl1_watchdog(unsigned long data)
1893{
1894 struct atl1_adapter *adapter = (struct atl1_adapter *)data;
1895
1896 /* Reset the timer */
1897 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1898}
1899
1900static int mdio_read(struct net_device *netdev, int phy_id, int reg_num)
1901{
1902 struct atl1_adapter *adapter = netdev_priv(netdev);
1903 u16 result;
1904
1905 atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result);
1906
1907 return result;
1908}
1909
1910static void mdio_write(struct net_device *netdev, int phy_id, int reg_num, int val)
1911{
1912 struct atl1_adapter *adapter = netdev_priv(netdev);
1913
1914 atl1_write_phy_reg(&adapter->hw, reg_num, val);
1915}
1916
1917/*
1918 * atl1_mii_ioctl -
1919 * @netdev:
1920 * @ifreq:
1921 * @cmd:
1922 */
1923static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1924{
1925 struct atl1_adapter *adapter = netdev_priv(netdev);
1926 unsigned long flags;
1927 int retval;
1928
1929 if (!netif_running(netdev))
1930 return -EINVAL;
1931
1932 spin_lock_irqsave(&adapter->lock, flags);
1933 retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL);
1934 spin_unlock_irqrestore(&adapter->lock, flags);
1935
1936 return retval;
1937}
1938
1939/*
1940 * atl1_ioctl -
1941 * @netdev:
1942 * @ifreq:
1943 * @cmd:
1944 */
1945static int atl1_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1946{
1947 switch (cmd) {
1948 case SIOCGMIIPHY:
1949 case SIOCGMIIREG:
1950 case SIOCSMIIREG:
1951 return atl1_mii_ioctl(netdev, ifr, cmd);
1952 default:
1953 return -EOPNOTSUPP;
1954 }
1955}
1956
1957/*
1958 * atl1_tx_timeout - Respond to a Tx Hang
1959 * @netdev: network interface device structure
1960 */
1961static void atl1_tx_timeout(struct net_device *netdev)
1962{
1963 struct atl1_adapter *adapter = netdev_priv(netdev);
1964 /* Do the reset outside of interrupt context */
1965 schedule_work(&adapter->tx_timeout_task);
1966}
1967
1968/*
1969 * atl1_phy_config - Timer Call-back
1970 * @data: pointer to netdev cast into an unsigned long
1971 */
1972static void atl1_phy_config(unsigned long data)
1973{
1974 struct atl1_adapter *adapter = (struct atl1_adapter *)data;
1975 struct atl1_hw *hw = &adapter->hw;
1976 unsigned long flags;
1977
1978 spin_lock_irqsave(&adapter->lock, flags);
1979 adapter->phy_timer_pending = false;
1980 atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
1981 atl1_write_phy_reg(hw, MII_AT001_CR, hw->mii_1000t_ctrl_reg);
1982 atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN);
1983 spin_unlock_irqrestore(&adapter->lock, flags);
1984}
1985
1986int atl1_reset(struct atl1_adapter *adapter)
1987{
1988 int ret;
1989
1990 ret = atl1_reset_hw(&adapter->hw);
1991 if (ret != ATL1_SUCCESS)
1992 return ret;
1993 return atl1_init_hw(&adapter->hw);
1994}
1995
1996/*
1997 * atl1_open - Called when a network interface is made active
1998 * @netdev: network interface device structure
1999 *
2000 * Returns 0 on success, negative value on failure
2001 *
2002 * The open entry point is called when a network interface is made
2003 * active by the system (IFF_UP). At this point all resources needed
2004 * for transmit and receive operations are allocated, the interrupt
2005 * handler is registered with the OS, the watchdog timer is started,
2006 * and the stack is notified that the interface is ready.
2007 */
2008static int atl1_open(struct net_device *netdev)
2009{
2010 struct atl1_adapter *adapter = netdev_priv(netdev);
2011 int err;
2012
2013 /* allocate transmit descriptors */
2014 err = atl1_setup_ring_resources(adapter);
2015 if (err)
2016 return err;
2017
2018 err = atl1_up(adapter);
2019 if (err)
2020 goto err_up;
2021
2022 return 0;
2023
2024err_up:
2025 atl1_reset(adapter);
2026 return err;
2027}
2028
2029/*
2030 * atl1_close - Disables a network interface
2031 * @netdev: network interface device structure
2032 *
2033 * Returns 0, this is not allowed to fail
2034 *
2035 * The close entry point is called when an interface is de-activated
2036 * by the OS. The hardware is still under the drivers control, but
2037 * needs to be disabled. A global MAC reset is issued to stop the
2038 * hardware, and all transmit and receive resources are freed.
2039 */
2040static int atl1_close(struct net_device *netdev)
2041{
2042 struct atl1_adapter *adapter = netdev_priv(netdev);
2043 atl1_down(adapter);
2044 atl1_free_ring_resources(adapter);
2045 return 0;
2046}
2047
2048/*
2049 * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
2050 * will assert. We do soft reset <0x1400=1> according
2051 * with the SPEC. BUT, it seemes that PCIE or DMA
2052 * state-machine will not be reset. DMAR_TO_INT will
2053 * assert again and again.
2054 */
2055static void atl1_tx_timeout_task(struct work_struct *work)
2056{
2057 struct atl1_adapter *adapter =
2058 container_of(work, struct atl1_adapter, tx_timeout_task);
2059 struct net_device *netdev = adapter->netdev;
2060
2061 netif_device_detach(netdev);
2062 atl1_down(adapter);
2063 atl1_up(adapter);
2064 netif_device_attach(netdev);
2065}
2066
2067/*
2068 * atl1_link_chg_task - deal with link change event Out of interrupt context
2069 */
2070static void atl1_link_chg_task(struct work_struct *work)
2071{
2072 struct atl1_adapter *adapter =
2073 container_of(work, struct atl1_adapter, link_chg_task);
2074 unsigned long flags;
2075
2076 spin_lock_irqsave(&adapter->lock, flags);
2077 atl1_check_link(adapter);
2078 spin_unlock_irqrestore(&adapter->lock, flags);
2079}
2080
2081/*
2082 * atl1_pcie_patch - Patch for PCIE module
2083 */
2084static void atl1_pcie_patch(struct atl1_adapter *adapter)
2085{
2086 u32 value;
2087 value = 0x6500;
2088 iowrite32(value, adapter->hw.hw_addr + 0x12FC);
2089 /* pcie flow control mode change */
2090 value = ioread32(adapter->hw.hw_addr + 0x1008);
2091 value |= 0x8000;
2092 iowrite32(value, adapter->hw.hw_addr + 0x1008);
2093}
2094
2095/*
2096 * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
2097 * on PCI Command register is disable.
2098 * The function enable this bit.
2099 * Brackett, 2006/03/15
2100 */
2101static void atl1_via_workaround(struct atl1_adapter *adapter)
2102{
2103 unsigned long value;
2104
2105 value = ioread16(adapter->hw.hw_addr + PCI_COMMAND);
2106 if (value & PCI_COMMAND_INTX_DISABLE)
2107 value &= ~PCI_COMMAND_INTX_DISABLE;
2108 iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND);
2109}
2110
2111/*
2112 * atl1_probe - Device Initialization Routine
2113 * @pdev: PCI device information struct
2114 * @ent: entry in atl1_pci_tbl
2115 *
2116 * Returns 0 on success, negative on failure
2117 *
2118 * atl1_probe initializes an adapter identified by a pci_dev structure.
2119 * The OS initialization, configuring of the adapter private structure,
2120 * and a hardware reset occur.
2121 */
2122static int __devinit atl1_probe(struct pci_dev *pdev,
2123 const struct pci_device_id *ent)
2124{
2125 struct net_device *netdev;
2126 struct atl1_adapter *adapter;
2127 static int cards_found = 0;
2128 bool pci_using_64 = true;
2129 int err;
2130
2131 err = pci_enable_device(pdev);
2132 if (err)
2133 return err;
2134
2135 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
2136 if (err) {
2137 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2138 if (err) {
2139 printk(KERN_DEBUG
2140 "%s: no usable DMA configuration, aborting\n",
2141 atl1_driver_name);
2142 goto err_dma;
2143 }
2144 pci_using_64 = false;
2145 }
2146 /* Mark all PCI regions associated with PCI device
2147 * pdev as being reserved by owner atl1_driver_name
2148 */
2149 err = pci_request_regions(pdev, atl1_driver_name);
2150 if (err)
2151 goto err_request_regions;
2152
2153 /* Enables bus-mastering on the device and calls
2154 * pcibios_set_master to do the needed arch specific settings
2155 */
2156 pci_set_master(pdev);
2157
2158 netdev = alloc_etherdev(sizeof(struct atl1_adapter));
2159 if (!netdev) {
2160 err = -ENOMEM;
2161 goto err_alloc_etherdev;
2162 }
2163 SET_MODULE_OWNER(netdev);
2164 SET_NETDEV_DEV(netdev, &pdev->dev);
2165
2166 pci_set_drvdata(pdev, netdev);
2167 adapter = netdev_priv(netdev);
2168 adapter->netdev = netdev;
2169 adapter->pdev = pdev;
2170 adapter->hw.back = adapter;
2171
2172 adapter->hw.hw_addr = pci_iomap(pdev, 0, 0);
2173 if (!adapter->hw.hw_addr) {
2174 err = -EIO;
2175 goto err_pci_iomap;
2176 }
2177 /* get device revision number */
2178 adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr + (REG_MASTER_CTRL + 2));
2179
2180 /* set default ring resource counts */
2181 adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD;
2182 adapter->tpd_ring.count = ATL1_DEFAULT_TPD;
2183
2184 adapter->mii.dev = netdev;
2185 adapter->mii.mdio_read = mdio_read;
2186 adapter->mii.mdio_write = mdio_write;
2187 adapter->mii.phy_id_mask = 0x1f;
2188 adapter->mii.reg_num_mask = 0x1f;
2189
2190 netdev->open = &atl1_open;
2191 netdev->stop = &atl1_close;
2192 netdev->hard_start_xmit = &atl1_xmit_frame;
2193 netdev->get_stats = &atl1_get_stats;
2194 netdev->set_multicast_list = &atl1_set_multi;
2195 netdev->set_mac_address = &atl1_set_mac;
2196 netdev->change_mtu = &atl1_change_mtu;
2197 netdev->do_ioctl = &atl1_ioctl;
2198 netdev->tx_timeout = &atl1_tx_timeout;
2199 netdev->watchdog_timeo = 5 * HZ;
2200 netdev->vlan_rx_register = atl1_vlan_rx_register;
2201 netdev->vlan_rx_add_vid = atl1_vlan_rx_add_vid;
2202 netdev->vlan_rx_kill_vid = atl1_vlan_rx_kill_vid;
2203 netdev->ethtool_ops = &atl1_ethtool_ops;
2204 adapter->bd_number = cards_found;
2205 adapter->pci_using_64 = pci_using_64;
2206
2207 /* setup the private structure */
2208 err = atl1_sw_init(adapter);
2209 if (err)
2210 goto err_common;
2211
2212 netdev->features = NETIF_F_HW_CSUM;
2213 netdev->features |= NETIF_F_SG;
2214 netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
2215
2216 /*
2217 * FIXME - Until tso performance gets fixed, disable the feature.
2218 * Enable it with ethtool -K if desired.
2219 */
2220 /* netdev->features |= NETIF_F_TSO; */
2221
2222 if (pci_using_64)
2223 netdev->features |= NETIF_F_HIGHDMA;
2224
2225 netdev->features |= NETIF_F_LLTX;
2226
2227 /*
2228 * patch for some L1 of old version,
2229 * the final version of L1 may not need these
2230 * patches
2231 */
2232 /* atl1_pcie_patch(adapter); */
2233
2234 /* really reset GPHY core */
2235 iowrite16(0, adapter->hw.hw_addr + REG_GPHY_ENABLE);
2236
2237 /*
2238 * reset the controller to
2239 * put the device in a known good starting state
2240 */
2241 if (atl1_reset_hw(&adapter->hw)) {
2242 err = -EIO;
2243 goto err_common;
2244 }
2245
2246 /* copy the MAC address out of the EEPROM */
2247 atl1_read_mac_addr(&adapter->hw);
2248 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
2249
2250 if (!is_valid_ether_addr(netdev->dev_addr)) {
2251 err = -EIO;
2252 goto err_common;
2253 }
2254
2255 atl1_check_options(adapter);
2256
2257 /* pre-init the MAC, and setup link */
2258 err = atl1_init_hw(&adapter->hw);
2259 if (err) {
2260 err = -EIO;
2261 goto err_common;
2262 }
2263
2264 atl1_pcie_patch(adapter);
2265 /* assume we have no link for now */
2266 netif_carrier_off(netdev);
2267 netif_stop_queue(netdev);
2268
2269 init_timer(&adapter->watchdog_timer);
2270 adapter->watchdog_timer.function = &atl1_watchdog;
2271 adapter->watchdog_timer.data = (unsigned long)adapter;
2272
2273 init_timer(&adapter->phy_config_timer);
2274 adapter->phy_config_timer.function = &atl1_phy_config;
2275 adapter->phy_config_timer.data = (unsigned long)adapter;
2276 adapter->phy_timer_pending = false;
2277
2278 INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task);
2279
2280 INIT_WORK(&adapter->link_chg_task, atl1_link_chg_task);
2281
2282 INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task);
2283
2284 err = register_netdev(netdev);
2285 if (err)
2286 goto err_common;
2287
2288 cards_found++;
2289 atl1_via_workaround(adapter);
2290 return 0;
2291
2292err_common:
2293 pci_iounmap(pdev, adapter->hw.hw_addr);
2294err_pci_iomap:
2295 free_netdev(netdev);
2296err_alloc_etherdev:
2297 pci_release_regions(pdev);
2298err_dma:
2299err_request_regions:
2300 pci_disable_device(pdev);
2301 return err;
2302}
2303
2304/*
2305 * atl1_remove - Device Removal Routine
2306 * @pdev: PCI device information struct
2307 *
2308 * atl1_remove is called by the PCI subsystem to alert the driver
2309 * that it should release a PCI device. The could be caused by a
2310 * Hot-Plug event, or because the driver is going to be removed from
2311 * memory.
2312 */
2313static void __devexit atl1_remove(struct pci_dev *pdev)
2314{
2315 struct net_device *netdev = pci_get_drvdata(pdev);
2316 struct atl1_adapter *adapter;
2317 /* Device not available. Return. */
2318 if (!netdev)
2319 return;
2320
2321 adapter = netdev_priv(netdev);
8c754a04
CS		 2322
2323 /* Some atl1 boards lack persistent storage for their MAC, and get it
2324 * from the BIOS during POST. If we've been messing with the MAC
2325 * address, we need to save the permanent one.
2326 */
2327 if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) {
2328 memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN);
2329 atl1_set_mac_addr(&adapter->hw);
2330 }
2331
f3cc28c7
JC		 2332 iowrite16(0, adapter->hw.hw_addr + REG_GPHY_ENABLE);
2333 unregister_netdev(netdev);
2334 pci_iounmap(pdev, adapter->hw.hw_addr);
2335 pci_release_regions(pdev);
2336 free_netdev(netdev);
2337 pci_disable_device(pdev);
2338}
2339
2340#ifdef CONFIG_PM
2341static int atl1_suspend(struct pci_dev *pdev, pm_message_t state)
2342{
2343 struct net_device *netdev = pci_get_drvdata(pdev);
2344 struct atl1_adapter *adapter = netdev_priv(netdev);
2345 struct atl1_hw *hw = &adapter->hw;
2346 u32 ctrl = 0;
2347 u32 wufc = adapter->wol;
2348
2349 netif_device_detach(netdev);
2350 if (netif_running(netdev))
2351 atl1_down(adapter);
2352
2353 atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2354 atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2355 if (ctrl & BMSR_LSTATUS)
2356 wufc &= ~ATL1_WUFC_LNKC;
2357
2358 /* reduce speed to 10/100M */
2359 if (wufc) {
2360 atl1_phy_enter_power_saving(hw);
2361 /* if resume, let driver to re- setup link */
2362 hw->phy_configured = false;
2363 atl1_set_mac_addr(hw);
2364 atl1_set_multi(netdev);
2365
2366 ctrl = 0;
2367 /* turn on magic packet wol */
2368 if (wufc & ATL1_WUFC_MAG)
2369 ctrl = WOL_MAGIC_EN | WOL_MAGIC_PME_EN;
2370
2371 /* turn on Link change WOL */
2372 if (wufc & ATL1_WUFC_LNKC)
2373 ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN);
2374 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2375
2376 /* turn on all-multi mode if wake on multicast is enabled */
2377 ctrl = ioread32(hw->hw_addr + REG_MAC_CTRL);
2378 ctrl &= ~MAC_CTRL_DBG;
2379 ctrl &= ~MAC_CTRL_PROMIS_EN;
2380 if (wufc & ATL1_WUFC_MC)
2381 ctrl |= MAC_CTRL_MC_ALL_EN;
2382 else
2383 ctrl &= ~MAC_CTRL_MC_ALL_EN;
2384
2385 /* turn on broadcast mode if wake on-BC is enabled */
2386 if (wufc & ATL1_WUFC_BC)
2387 ctrl |= MAC_CTRL_BC_EN;
2388 else
2389 ctrl &= ~MAC_CTRL_BC_EN;
2390
2391 /* enable RX */
2392 ctrl |= MAC_CTRL_RX_EN;
2393 iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL);
2394 pci_enable_wake(pdev, PCI_D3hot, 1);
2395 pci_enable_wake(pdev, PCI_D3cold, 1); /* 4 == D3 cold */
2396 } else {
2397 iowrite32(0, hw->hw_addr + REG_WOL_CTRL);
2398 pci_enable_wake(pdev, PCI_D3hot, 0);
2399 pci_enable_wake(pdev, PCI_D3cold, 0); /* 4 == D3 cold */
2400 }
2401
2402 pci_save_state(pdev);
2403 pci_disable_device(pdev);
2404
2405 pci_set_power_state(pdev, PCI_D3hot);
2406
2407 return 0;
2408}
2409
2410static int atl1_resume(struct pci_dev *pdev)
2411{
2412 struct net_device *netdev = pci_get_drvdata(pdev);
2413 struct atl1_adapter *adapter = netdev_priv(netdev);
2414 u32 ret_val;
2415
2416 pci_set_power_state(pdev, 0);
2417 pci_restore_state(pdev);
2418
2419 ret_val = pci_enable_device(pdev);
2420 pci_enable_wake(pdev, PCI_D3hot, 0);
2421 pci_enable_wake(pdev, PCI_D3cold, 0);
2422
2423 iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL);
2424 atl1_reset(adapter);
2425
2426 if (netif_running(netdev))
2427 atl1_up(adapter);
2428 netif_device_attach(netdev);
2429
2430 atl1_via_workaround(adapter);
2431
2432 return 0;
2433}
2434#else
2435#define atl1_suspend NULL
2436#define atl1_resume NULL
2437#endif
2438
2439static struct pci_driver atl1_driver = {
2440 .name = atl1_driver_name,
2441 .id_table = atl1_pci_tbl,
2442 .probe = atl1_probe,
2443 .remove = __devexit_p(atl1_remove),
2444 /* Power Managment Hooks */
2445 /* probably broken right now -- CHS */
2446 .suspend = atl1_suspend,
2447 .resume = atl1_resume
2448};
2449
2450/*
2451 * atl1_exit_module - Driver Exit Cleanup Routine
2452 *
2453 * atl1_exit_module is called just before the driver is removed
2454 * from memory.
2455 */
2456static void __exit atl1_exit_module(void)
2457{
2458 pci_unregister_driver(&atl1_driver);
2459}
2460
2461/*
2462 * atl1_init_module - Driver Registration Routine
2463 *
2464 * atl1_init_module is the first routine called when the driver is
2465 * loaded. All it does is register with the PCI subsystem.
2466 */
2467static int __init atl1_init_module(void)
2468{
2469 printk(KERN_INFO "%s - version %s\n", atl1_driver_string, DRIVER_VERSION);
2470 printk(KERN_INFO "%s\n", atl1_copyright);
2471 return pci_register_driver(&atl1_driver);
2472}
2473
2474module_init(atl1_init_module);
2475module_exit(atl1_exit_module);
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