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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 | |
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; | |
91 | ||
92 | MODULE_AUTHOR | |
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); | |
97 | ||
98 | /* | |
99 | * atl1_pci_tbl - PCI Device ID Table | |
100 | */ | |
101 | static 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 | ||
107 | MODULE_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 | */ | |
117 | static 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 | */ | |
178 | s32 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 | ||
263 | err_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 | */ | |
272 | static 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 | ||
278 | static 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 | ||
288 | static 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 | ||
366 | static 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 | */ | |
408 | static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter) | |
409 | { | |
410 | struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; | |
411 | struct net_device *netdev = adapter->netdev; | |
412 | struct pci_dev *pdev = adapter->pdev; | |
413 | struct page *page; | |
414 | unsigned long offset; | |
415 | struct atl1_buffer *buffer_info, *next_info; | |
416 | struct sk_buff *skb; | |
417 | u16 num_alloc = 0; | |
418 | u16 rfd_next_to_use, next_next; | |
419 | struct rx_free_desc *rfd_desc; | |
420 | ||
421 | next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use); | |
422 | if (++next_next == rfd_ring->count) | |
423 | next_next = 0; | |
424 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; | |
425 | next_info = &rfd_ring->buffer_info[next_next]; | |
426 | ||
427 | while (!buffer_info->alloced && !next_info->alloced) { | |
428 | if (buffer_info->skb) { | |
429 | buffer_info->alloced = 1; | |
430 | goto next; | |
431 | } | |
432 | ||
433 | rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use); | |
434 | ||
435 | skb = dev_alloc_skb(adapter->rx_buffer_len + NET_IP_ALIGN); | |
436 | if (unlikely(!skb)) { /* Better luck next round */ | |
437 | adapter->net_stats.rx_dropped++; | |
438 | break; | |
439 | } | |
440 | ||
441 | /* | |
442 | * Make buffer alignment 2 beyond a 16 byte boundary | |
443 | * this will result in a 16 byte aligned IP header after | |
444 | * the 14 byte MAC header is removed | |
445 | */ | |
446 | skb_reserve(skb, NET_IP_ALIGN); | |
447 | skb->dev = netdev; | |
448 | ||
449 | buffer_info->alloced = 1; | |
450 | buffer_info->skb = skb; | |
451 | buffer_info->length = (u16) adapter->rx_buffer_len; | |
452 | page = virt_to_page(skb->data); | |
453 | offset = (unsigned long)skb->data & ~PAGE_MASK; | |
454 | buffer_info->dma = pci_map_page(pdev, page, offset, | |
455 | adapter->rx_buffer_len, | |
456 | PCI_DMA_FROMDEVICE); | |
457 | rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
458 | rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len); | |
459 | rfd_desc->coalese = 0; | |
460 | ||
461 | next: | |
462 | rfd_next_to_use = next_next; | |
463 | if (unlikely(++next_next == rfd_ring->count)) | |
464 | next_next = 0; | |
465 | ||
466 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; | |
467 | next_info = &rfd_ring->buffer_info[next_next]; | |
468 | num_alloc++; | |
469 | } | |
470 | ||
471 | if (num_alloc) { | |
472 | /* | |
473 | * Force memory writes to complete before letting h/w | |
474 | * know there are new descriptors to fetch. (Only | |
475 | * applicable for weak-ordered memory model archs, | |
476 | * such as IA-64). | |
477 | */ | |
478 | wmb(); | |
479 | atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use); | |
480 | } | |
481 | return num_alloc; | |
482 | } | |
483 | ||
484 | static void atl1_intr_rx(struct atl1_adapter *adapter) | |
485 | { | |
486 | int i, count; | |
487 | u16 length; | |
488 | u16 rrd_next_to_clean; | |
489 | u32 value; | |
490 | struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; | |
491 | struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
492 | struct atl1_buffer *buffer_info; | |
493 | struct rx_return_desc *rrd; | |
494 | struct sk_buff *skb; | |
495 | ||
496 | count = 0; | |
497 | ||
498 | rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean); | |
499 | ||
500 | while (1) { | |
501 | rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean); | |
502 | i = 1; | |
503 | if (likely(rrd->xsz.valid)) { /* packet valid */ | |
504 | chk_rrd: | |
505 | /* check rrd status */ | |
506 | if (likely(rrd->num_buf == 1)) | |
507 | goto rrd_ok; | |
508 | ||
509 | /* rrd seems to be bad */ | |
510 | if (unlikely(i-- > 0)) { | |
511 | /* rrd may not be DMAed completely */ | |
512 | printk(KERN_DEBUG | |
513 | "%s: RRD may not be DMAed completely\n", | |
514 | atl1_driver_name); | |
515 | udelay(1); | |
516 | goto chk_rrd; | |
517 | } | |
518 | /* bad rrd */ | |
519 | printk(KERN_DEBUG "%s: bad RRD\n", atl1_driver_name); | |
520 | /* see if update RFD index */ | |
521 | if (rrd->num_buf > 1) { | |
522 | u16 num_buf; | |
523 | num_buf = | |
524 | (rrd->xsz.xsum_sz.pkt_size + | |
525 | adapter->rx_buffer_len - | |
526 | 1) / adapter->rx_buffer_len; | |
527 | if (rrd->num_buf == num_buf) { | |
528 | /* clean alloc flag for bad rrd */ | |
529 | while (rfd_ring->next_to_clean != | |
530 | (rrd->buf_indx + num_buf)) { | |
531 | rfd_ring->buffer_info[rfd_ring-> | |
532 | next_to_clean].alloced = 0; | |
533 | if (++rfd_ring->next_to_clean == | |
534 | rfd_ring->count) { | |
535 | rfd_ring-> | |
536 | next_to_clean = 0; | |
537 | } | |
538 | } | |
539 | } | |
540 | } | |
541 | ||
542 | /* update rrd */ | |
543 | rrd->xsz.valid = 0; | |
544 | if (++rrd_next_to_clean == rrd_ring->count) | |
545 | rrd_next_to_clean = 0; | |
546 | count++; | |
547 | continue; | |
548 | } else { /* current rrd still not be updated */ | |
549 | ||
550 | break; | |
551 | } | |
552 | rrd_ok: | |
553 | /* clean alloc flag for bad rrd */ | |
554 | while (rfd_ring->next_to_clean != rrd->buf_indx) { | |
555 | rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = | |
556 | 0; | |
557 | if (++rfd_ring->next_to_clean == rfd_ring->count) | |
558 | rfd_ring->next_to_clean = 0; | |
559 | } | |
560 | ||
561 | buffer_info = &rfd_ring->buffer_info[rrd->buf_indx]; | |
562 | if (++rfd_ring->next_to_clean == rfd_ring->count) | |
563 | rfd_ring->next_to_clean = 0; | |
564 | ||
565 | /* update rrd next to clean */ | |
566 | if (++rrd_next_to_clean == rrd_ring->count) | |
567 | rrd_next_to_clean = 0; | |
568 | count++; | |
569 | ||
570 | if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) { | |
571 | if (!(rrd->err_flg & | |
572 | (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM | |
573 | | ERR_FLAG_LEN))) { | |
574 | /* packet error, don't need upstream */ | |
575 | buffer_info->alloced = 0; | |
576 | rrd->xsz.valid = 0; | |
577 | continue; | |
578 | } | |
579 | } | |
580 | ||
581 | /* Good Receive */ | |
582 | pci_unmap_page(adapter->pdev, buffer_info->dma, | |
583 | buffer_info->length, PCI_DMA_FROMDEVICE); | |
584 | skb = buffer_info->skb; | |
585 | length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size); | |
586 | ||
587 | skb_put(skb, length - ETHERNET_FCS_SIZE); | |
588 | ||
589 | /* Receive Checksum Offload */ | |
590 | atl1_rx_checksum(adapter, rrd, skb); | |
591 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
592 | ||
593 | if (adapter->vlgrp && (rrd->pkt_flg & PACKET_FLAG_VLAN_INS)) { | |
594 | u16 vlan_tag = (rrd->vlan_tag >> 4) | | |
595 | ((rrd->vlan_tag & 7) << 13) | | |
596 | ((rrd->vlan_tag & 8) << 9); | |
597 | vlan_hwaccel_rx(skb, adapter->vlgrp, vlan_tag); | |
598 | } else | |
599 | netif_rx(skb); | |
600 | ||
601 | /* let protocol layer free skb */ | |
602 | buffer_info->skb = NULL; | |
603 | buffer_info->alloced = 0; | |
604 | rrd->xsz.valid = 0; | |
605 | ||
606 | adapter->netdev->last_rx = jiffies; | |
607 | } | |
608 | ||
609 | atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean); | |
610 | ||
611 | atl1_alloc_rx_buffers(adapter); | |
612 | ||
613 | /* update mailbox ? */ | |
614 | if (count) { | |
615 | u32 tpd_next_to_use; | |
616 | u32 rfd_next_to_use; | |
617 | u32 rrd_next_to_clean; | |
618 | ||
619 | spin_lock(&adapter->mb_lock); | |
620 | ||
621 | tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use); | |
622 | rfd_next_to_use = | |
623 | atomic_read(&adapter->rfd_ring.next_to_use); | |
624 | rrd_next_to_clean = | |
625 | atomic_read(&adapter->rrd_ring.next_to_clean); | |
626 | value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) << | |
627 | MB_RFD_PROD_INDX_SHIFT) | | |
628 | ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) << | |
629 | MB_RRD_CONS_INDX_SHIFT) | | |
630 | ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) << | |
631 | MB_TPD_PROD_INDX_SHIFT); | |
632 | iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX); | |
633 | spin_unlock(&adapter->mb_lock); | |
634 | } | |
635 | } | |
636 | ||
637 | static void atl1_intr_tx(struct atl1_adapter *adapter) | |
638 | { | |
639 | struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; | |
640 | struct atl1_buffer *buffer_info; | |
641 | u16 sw_tpd_next_to_clean; | |
642 | u16 cmb_tpd_next_to_clean; | |
643 | u8 update = 0; | |
644 | ||
645 | sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean); | |
646 | cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx); | |
647 | ||
648 | while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) { | |
649 | struct tx_packet_desc *tpd; | |
650 | update = 1; | |
651 | tpd = ATL1_TPD_DESC(tpd_ring, sw_tpd_next_to_clean); | |
652 | buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean]; | |
653 | if (buffer_info->dma) { | |
654 | pci_unmap_page(adapter->pdev, buffer_info->dma, | |
655 | buffer_info->length, PCI_DMA_TODEVICE); | |
656 | buffer_info->dma = 0; | |
657 | } | |
658 | ||
659 | if (buffer_info->skb) { | |
660 | dev_kfree_skb_irq(buffer_info->skb); | |
661 | buffer_info->skb = NULL; | |
662 | } | |
663 | tpd->buffer_addr = 0; | |
664 | tpd->desc.data = 0; | |
665 | ||
666 | if (++sw_tpd_next_to_clean == tpd_ring->count) | |
667 | sw_tpd_next_to_clean = 0; | |
668 | } | |
669 | atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean); | |
670 | ||
671 | if (netif_queue_stopped(adapter->netdev) | |
672 | && netif_carrier_ok(adapter->netdev)) | |
673 | netif_wake_queue(adapter->netdev); | |
674 | } | |
675 | ||
676 | static void atl1_check_for_link(struct atl1_adapter *adapter) | |
677 | { | |
678 | struct net_device *netdev = adapter->netdev; | |
679 | u16 phy_data = 0; | |
680 | ||
681 | spin_lock(&adapter->lock); | |
682 | adapter->phy_timer_pending = false; | |
683 | atl1_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
684 | atl1_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
685 | spin_unlock(&adapter->lock); | |
686 | ||
687 | /* notify upper layer link down ASAP */ | |
688 | if (!(phy_data & BMSR_LSTATUS)) { /* Link Down */ | |
689 | if (netif_carrier_ok(netdev)) { /* old link state: Up */ | |
690 | printk(KERN_INFO "%s: %s link is down\n", | |
691 | atl1_driver_name, netdev->name); | |
692 | adapter->link_speed = SPEED_0; | |
693 | netif_carrier_off(netdev); | |
694 | netif_stop_queue(netdev); | |
695 | } | |
696 | } | |
697 | schedule_work(&adapter->link_chg_task); | |
698 | } | |
699 | ||
700 | /* | |
701 | * atl1_intr - Interrupt Handler | |
702 | * @irq: interrupt number | |
703 | * @data: pointer to a network interface device structure | |
704 | * @pt_regs: CPU registers structure | |
705 | */ | |
706 | static irqreturn_t atl1_intr(int irq, void *data) | |
707 | { | |
708 | /*struct atl1_adapter *adapter = ((struct net_device *)data)->priv;*/ | |
709 | struct atl1_adapter *adapter = netdev_priv(data); | |
710 | u32 status; | |
711 | u8 update_rx; | |
712 | int max_ints = 10; | |
713 | ||
714 | status = adapter->cmb.cmb->int_stats; | |
715 | if (!status) | |
716 | return IRQ_NONE; | |
717 | ||
718 | update_rx = 0; | |
719 | ||
720 | do { | |
721 | /* clear CMB interrupt status at once */ | |
722 | adapter->cmb.cmb->int_stats = 0; | |
723 | ||
724 | if (status & ISR_GPHY) /* clear phy status */ | |
725 | atl1_clear_phy_int(adapter); | |
726 | ||
727 | /* clear ISR status, and Enable CMB DMA/Disable Interrupt */ | |
728 | iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR); | |
729 | ||
730 | /* check if SMB intr */ | |
731 | if (status & ISR_SMB) | |
732 | atl1_inc_smb(adapter); | |
733 | ||
734 | /* check if PCIE PHY Link down */ | |
735 | if (status & ISR_PHY_LINKDOWN) { | |
736 | printk(KERN_DEBUG "%s: pcie phy link down %x\n", | |
737 | atl1_driver_name, status); | |
738 | if (netif_running(adapter->netdev)) { /* reset MAC */ | |
739 | iowrite32(0, adapter->hw.hw_addr + REG_IMR); | |
740 | schedule_work(&adapter->pcie_dma_to_rst_task); | |
741 | return IRQ_HANDLED; | |
742 | } | |
743 | } | |
744 | ||
745 | /* check if DMA read/write error ? */ | |
746 | if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) { | |
747 | printk(KERN_DEBUG | |
748 | "%s: pcie DMA r/w error (status = 0x%x)\n", | |
749 | atl1_driver_name, status); | |
750 | iowrite32(0, adapter->hw.hw_addr + REG_IMR); | |
751 | schedule_work(&adapter->pcie_dma_to_rst_task); | |
752 | return IRQ_HANDLED; | |
753 | } | |
754 | ||
755 | /* link event */ | |
756 | if (status & ISR_GPHY) { | |
757 | adapter->soft_stats.tx_carrier_errors++; | |
758 | atl1_check_for_link(adapter); | |
759 | } | |
760 | ||
761 | /* transmit event */ | |
762 | if (status & ISR_CMB_TX) | |
763 | atl1_intr_tx(adapter); | |
764 | ||
765 | /* rx exception */ | |
766 | if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN | | |
767 | ISR_RRD_OV | ISR_HOST_RFD_UNRUN | | |
768 | ISR_HOST_RRD_OV | ISR_CMB_RX))) { | |
769 | if (status & | |
770 | (ISR_RXF_OV | ISR_RFD_UNRUN | ISR_RRD_OV | | |
771 | ISR_HOST_RFD_UNRUN | ISR_HOST_RRD_OV)) | |
772 | printk(KERN_INFO | |
773 | "%s: rx exception: status = 0x%x\n", | |
774 | atl1_driver_name, status); | |
775 | atl1_intr_rx(adapter); | |
776 | } | |
777 | ||
778 | if (--max_ints < 0) | |
779 | break; | |
780 | ||
781 | } while ((status = adapter->cmb.cmb->int_stats)); | |
782 | ||
783 | /* re-enable Interrupt */ | |
784 | iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR); | |
785 | return IRQ_HANDLED; | |
786 | } | |
787 | ||
788 | /* | |
789 | * atl1_set_multi - Multicast and Promiscuous mode set | |
790 | * @netdev: network interface device structure | |
791 | * | |
792 | * The set_multi entry point is called whenever the multicast address | |
793 | * list or the network interface flags are updated. This routine is | |
794 | * responsible for configuring the hardware for proper multicast, | |
795 | * promiscuous mode, and all-multi behavior. | |
796 | */ | |
797 | static void atl1_set_multi(struct net_device *netdev) | |
798 | { | |
799 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
800 | struct atl1_hw *hw = &adapter->hw; | |
801 | struct dev_mc_list *mc_ptr; | |
802 | u32 rctl; | |
803 | u32 hash_value; | |
804 | ||
805 | /* Check for Promiscuous and All Multicast modes */ | |
806 | rctl = ioread32(hw->hw_addr + REG_MAC_CTRL); | |
807 | if (netdev->flags & IFF_PROMISC) | |
808 | rctl |= MAC_CTRL_PROMIS_EN; | |
809 | else if (netdev->flags & IFF_ALLMULTI) { | |
810 | rctl |= MAC_CTRL_MC_ALL_EN; | |
811 | rctl &= ~MAC_CTRL_PROMIS_EN; | |
812 | } else | |
813 | rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); | |
814 | ||
815 | iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL); | |
816 | ||
817 | /* clear the old settings from the multicast hash table */ | |
818 | iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE); | |
819 | iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2)); | |
820 | ||
821 | /* compute mc addresses' hash value ,and put it into hash table */ | |
822 | for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) { | |
823 | hash_value = atl1_hash_mc_addr(hw, mc_ptr->dmi_addr); | |
824 | atl1_hash_set(hw, hash_value); | |
825 | } | |
826 | } | |
827 | ||
828 | static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter) | |
829 | { | |
830 | u32 value; | |
831 | struct atl1_hw *hw = &adapter->hw; | |
832 | struct net_device *netdev = adapter->netdev; | |
833 | /* Config MAC CTRL Register */ | |
834 | value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN; | |
835 | /* duplex */ | |
836 | if (FULL_DUPLEX == adapter->link_duplex) | |
837 | value |= MAC_CTRL_DUPLX; | |
838 | /* speed */ | |
839 | value |= ((u32) ((SPEED_1000 == adapter->link_speed) ? | |
840 | MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) << | |
841 | MAC_CTRL_SPEED_SHIFT); | |
842 | /* flow control */ | |
843 | value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); | |
844 | /* PAD & CRC */ | |
845 | value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); | |
846 | /* preamble length */ | |
847 | value |= (((u32) adapter->hw.preamble_len | |
848 | & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT); | |
849 | /* vlan */ | |
850 | if (adapter->vlgrp) | |
851 | value |= MAC_CTRL_RMV_VLAN; | |
852 | /* rx checksum | |
853 | if (adapter->rx_csum) | |
854 | value |= MAC_CTRL_RX_CHKSUM_EN; | |
855 | */ | |
856 | /* filter mode */ | |
857 | value |= MAC_CTRL_BC_EN; | |
858 | if (netdev->flags & IFF_PROMISC) | |
859 | value |= MAC_CTRL_PROMIS_EN; | |
860 | else if (netdev->flags & IFF_ALLMULTI) | |
861 | value |= MAC_CTRL_MC_ALL_EN; | |
862 | /* value |= MAC_CTRL_LOOPBACK; */ | |
863 | iowrite32(value, hw->hw_addr + REG_MAC_CTRL); | |
864 | } | |
865 | ||
866 | static u32 atl1_check_link(struct atl1_adapter *adapter) | |
867 | { | |
868 | struct atl1_hw *hw = &adapter->hw; | |
869 | struct net_device *netdev = adapter->netdev; | |
870 | u32 ret_val; | |
871 | u16 speed, duplex, phy_data; | |
872 | int reconfig = 0; | |
873 | ||
874 | /* MII_BMSR must read twice */ | |
875 | atl1_read_phy_reg(hw, MII_BMSR, &phy_data); | |
876 | atl1_read_phy_reg(hw, MII_BMSR, &phy_data); | |
877 | if (!(phy_data & BMSR_LSTATUS)) { /* link down */ | |
878 | if (netif_carrier_ok(netdev)) { /* old link state: Up */ | |
879 | printk(KERN_INFO "%s: link is down\n", | |
880 | atl1_driver_name); | |
881 | adapter->link_speed = SPEED_0; | |
882 | netif_carrier_off(netdev); | |
883 | netif_stop_queue(netdev); | |
884 | } | |
885 | return ATL1_SUCCESS; | |
886 | } | |
887 | ||
888 | /* Link Up */ | |
889 | ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex); | |
890 | if (ret_val) | |
891 | return ret_val; | |
892 | ||
893 | switch (hw->media_type) { | |
894 | case MEDIA_TYPE_1000M_FULL: | |
895 | if (speed != SPEED_1000 || duplex != FULL_DUPLEX) | |
896 | reconfig = 1; | |
897 | break; | |
898 | case MEDIA_TYPE_100M_FULL: | |
899 | if (speed != SPEED_100 || duplex != FULL_DUPLEX) | |
900 | reconfig = 1; | |
901 | break; | |
902 | case MEDIA_TYPE_100M_HALF: | |
903 | if (speed != SPEED_100 || duplex != HALF_DUPLEX) | |
904 | reconfig = 1; | |
905 | break; | |
906 | case MEDIA_TYPE_10M_FULL: | |
907 | if (speed != SPEED_10 || duplex != FULL_DUPLEX) | |
908 | reconfig = 1; | |
909 | break; | |
910 | case MEDIA_TYPE_10M_HALF: | |
911 | if (speed != SPEED_10 || duplex != HALF_DUPLEX) | |
912 | reconfig = 1; | |
913 | break; | |
914 | } | |
915 | ||
916 | /* link result is our setting */ | |
917 | if (!reconfig) { | |
918 | if (adapter->link_speed != speed | |
919 | || adapter->link_duplex != duplex) { | |
920 | adapter->link_speed = speed; | |
921 | adapter->link_duplex = duplex; | |
922 | atl1_setup_mac_ctrl(adapter); | |
923 | printk(KERN_INFO "%s: %s link is up %d Mbps %s\n", | |
924 | atl1_driver_name, netdev->name, | |
925 | adapter->link_speed, | |
926 | adapter->link_duplex == | |
927 | FULL_DUPLEX ? "full duplex" : "half duplex"); | |
928 | } | |
929 | if (!netif_carrier_ok(netdev)) { /* Link down -> Up */ | |
930 | netif_carrier_on(netdev); | |
931 | netif_wake_queue(netdev); | |
932 | } | |
933 | return ATL1_SUCCESS; | |
934 | } | |
935 | ||
936 | /* change orignal link status */ | |
937 | if (netif_carrier_ok(netdev)) { | |
938 | adapter->link_speed = SPEED_0; | |
939 | netif_carrier_off(netdev); | |
940 | netif_stop_queue(netdev); | |
941 | } | |
942 | ||
943 | if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR && | |
944 | hw->media_type != MEDIA_TYPE_1000M_FULL) { | |
945 | switch (hw->media_type) { | |
946 | case MEDIA_TYPE_100M_FULL: | |
947 | phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 | | |
948 | MII_CR_RESET; | |
949 | break; | |
950 | case MEDIA_TYPE_100M_HALF: | |
951 | phy_data = MII_CR_SPEED_100 | MII_CR_RESET; | |
952 | break; | |
953 | case MEDIA_TYPE_10M_FULL: | |
954 | phy_data = | |
955 | MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET; | |
956 | break; | |
957 | default: /* MEDIA_TYPE_10M_HALF: */ | |
958 | phy_data = MII_CR_SPEED_10 | MII_CR_RESET; | |
959 | break; | |
960 | } | |
961 | atl1_write_phy_reg(hw, MII_BMCR, phy_data); | |
962 | return ATL1_SUCCESS; | |
963 | } | |
964 | ||
965 | /* auto-neg, insert timer to re-config phy */ | |
966 | if (!adapter->phy_timer_pending) { | |
967 | adapter->phy_timer_pending = true; | |
968 | mod_timer(&adapter->phy_config_timer, jiffies + 3 * HZ); | |
969 | } | |
970 | ||
971 | return ATL1_SUCCESS; | |
972 | } | |
973 | ||
974 | static void set_flow_ctrl_old(struct atl1_adapter *adapter) | |
975 | { | |
976 | u32 hi, lo, value; | |
977 | ||
978 | /* RFD Flow Control */ | |
979 | value = adapter->rfd_ring.count; | |
980 | hi = value / 16; | |
981 | if (hi < 2) | |
982 | hi = 2; | |
983 | lo = value * 7 / 8; | |
984 | ||
985 | value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) | | |
986 | ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT); | |
987 | iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH); | |
988 | ||
989 | /* RRD Flow Control */ | |
990 | value = adapter->rrd_ring.count; | |
991 | lo = value / 16; | |
992 | hi = value * 7 / 8; | |
993 | if (lo < 2) | |
994 | lo = 2; | |
995 | value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) | | |
996 | ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT); | |
997 | iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH); | |
998 | } | |
999 | ||
1000 | static void set_flow_ctrl_new(struct atl1_hw *hw) | |
1001 | { | |
1002 | u32 hi, lo, value; | |
1003 | ||
1004 | /* RXF Flow Control */ | |
1005 | value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN); | |
1006 | lo = value / 16; | |
1007 | if (lo < 192) | |
1008 | lo = 192; | |
1009 | hi = value * 7 / 8; | |
1010 | if (hi < lo) | |
1011 | hi = lo + 16; | |
1012 | value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) | | |
1013 | ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT); | |
1014 | iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH); | |
1015 | ||
1016 | /* RRD Flow Control */ | |
1017 | value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN); | |
1018 | lo = value / 8; | |
1019 | hi = value * 7 / 8; | |
1020 | if (lo < 2) | |
1021 | lo = 2; | |
1022 | if (hi < lo) | |
1023 | hi = lo + 3; | |
1024 | value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) | | |
1025 | ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT); | |
1026 | iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH); | |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * atl1_configure - Configure Transmit&Receive Unit after Reset | |
1031 | * @adapter: board private structure | |
1032 | * | |
1033 | * Configure the Tx /Rx unit of the MAC after a reset. | |
1034 | */ | |
1035 | static u32 atl1_configure(struct atl1_adapter *adapter) | |
1036 | { | |
1037 | struct atl1_hw *hw = &adapter->hw; | |
1038 | u32 value; | |
1039 | ||
1040 | /* clear interrupt status */ | |
1041 | iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR); | |
1042 | ||
1043 | /* set MAC Address */ | |
1044 | value = (((u32) hw->mac_addr[2]) << 24) | | |
1045 | (((u32) hw->mac_addr[3]) << 16) | | |
1046 | (((u32) hw->mac_addr[4]) << 8) | | |
1047 | (((u32) hw->mac_addr[5])); | |
1048 | iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR); | |
1049 | value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1])); | |
1050 | iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4)); | |
1051 | ||
1052 | /* tx / rx ring */ | |
1053 | ||
1054 | /* HI base address */ | |
1055 | iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32), | |
1056 | hw->hw_addr + REG_DESC_BASE_ADDR_HI); | |
1057 | /* LO base address */ | |
1058 | iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL), | |
1059 | hw->hw_addr + REG_DESC_RFD_ADDR_LO); | |
1060 | iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL), | |
1061 | hw->hw_addr + REG_DESC_RRD_ADDR_LO); | |
1062 | iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL), | |
1063 | hw->hw_addr + REG_DESC_TPD_ADDR_LO); | |
1064 | iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL), | |
1065 | hw->hw_addr + REG_DESC_CMB_ADDR_LO); | |
1066 | iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL), | |
1067 | hw->hw_addr + REG_DESC_SMB_ADDR_LO); | |
1068 | ||
1069 | /* element count */ | |
1070 | value = adapter->rrd_ring.count; | |
1071 | value <<= 16; | |
1072 | value += adapter->rfd_ring.count; | |
1073 | iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE); | |
1074 | iowrite32(adapter->tpd_ring.count, hw->hw_addr + REG_DESC_TPD_RING_SIZE); | |
1075 | ||
1076 | /* Load Ptr */ | |
1077 | iowrite32(1, hw->hw_addr + REG_LOAD_PTR); | |
1078 | ||
1079 | /* config Mailbox */ | |
1080 | value = ((atomic_read(&adapter->tpd_ring.next_to_use) | |
1081 | & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) | | |
1082 | ((atomic_read(&adapter->rrd_ring.next_to_clean) | |
1083 | & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) | | |
1084 | ((atomic_read(&adapter->rfd_ring.next_to_use) | |
1085 | & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT); | |
1086 | iowrite32(value, hw->hw_addr + REG_MAILBOX); | |
1087 | ||
1088 | /* config IPG/IFG */ | |
1089 | value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK) | |
1090 | << MAC_IPG_IFG_IPGT_SHIFT) | | |
1091 | (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK) | |
1092 | << MAC_IPG_IFG_MIFG_SHIFT) | | |
1093 | (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK) | |
1094 | << MAC_IPG_IFG_IPGR1_SHIFT) | | |
1095 | (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK) | |
1096 | << MAC_IPG_IFG_IPGR2_SHIFT); | |
1097 | iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG); | |
1098 | ||
1099 | /* config Half-Duplex Control */ | |
1100 | value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) | | |
1101 | (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK) | |
1102 | << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) | | |
1103 | MAC_HALF_DUPLX_CTRL_EXC_DEF_EN | | |
1104 | (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) | | |
1105 | (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK) | |
1106 | << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT); | |
1107 | iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL); | |
1108 | ||
1109 | /* set Interrupt Moderator Timer */ | |
1110 | iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT); | |
1111 | iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL); | |
1112 | ||
1113 | /* set Interrupt Clear Timer */ | |
1114 | iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER); | |
1115 | ||
1116 | /* set MTU, 4 : VLAN */ | |
1117 | iowrite32(hw->max_frame_size + 4, hw->hw_addr + REG_MTU); | |
1118 | ||
1119 | /* jumbo size & rrd retirement timer */ | |
1120 | value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK) | |
1121 | << RXQ_JMBOSZ_TH_SHIFT) | | |
1122 | (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK) | |
1123 | << RXQ_JMBO_LKAH_SHIFT) | | |
1124 | (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK) | |
1125 | << RXQ_RRD_TIMER_SHIFT); | |
1126 | iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM); | |
1127 | ||
1128 | /* Flow Control */ | |
1129 | switch (hw->dev_rev) { | |
1130 | case 0x8001: | |
1131 | case 0x9001: | |
1132 | case 0x9002: | |
1133 | case 0x9003: | |
1134 | set_flow_ctrl_old(adapter); | |
1135 | break; | |
1136 | default: | |
1137 | set_flow_ctrl_new(hw); | |
1138 | break; | |
1139 | } | |
1140 | ||
1141 | /* config TXQ */ | |
1142 | value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK) | |
1143 | << TXQ_CTRL_TPD_BURST_NUM_SHIFT) | | |
1144 | (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK) | |
1145 | << TXQ_CTRL_TXF_BURST_NUM_SHIFT) | | |
1146 | (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK) | |
1147 | << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE | TXQ_CTRL_EN; | |
1148 | iowrite32(value, hw->hw_addr + REG_TXQ_CTRL); | |
1149 | ||
1150 | /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */ | |
1151 | value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK) | |
1152 | << TX_JUMBO_TASK_TH_SHIFT) | | |
1153 | (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK) | |
1154 | << TX_TPD_MIN_IPG_SHIFT); | |
1155 | iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG); | |
1156 | ||
1157 | /* config RXQ */ | |
1158 | value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK) | |
1159 | << RXQ_CTRL_RFD_BURST_NUM_SHIFT) | | |
1160 | (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK) | |
1161 | << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) | | |
1162 | (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK) | |
1163 | << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | | |
1164 | RXQ_CTRL_CUT_THRU_EN | RXQ_CTRL_EN; | |
1165 | iowrite32(value, hw->hw_addr + REG_RXQ_CTRL); | |
1166 | ||
1167 | /* config DMA Engine */ | |
1168 | value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) | |
1169 | << DMA_CTRL_DMAR_BURST_LEN_SHIFT) | | |
1170 | ((((u32) hw->dmaw_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) | |
1171 | << DMA_CTRL_DMAR_BURST_LEN_SHIFT) | | |
1172 | DMA_CTRL_DMAR_EN | DMA_CTRL_DMAW_EN; | |
1173 | value |= (u32) hw->dma_ord; | |
1174 | if (atl1_rcb_128 == hw->rcb_value) | |
1175 | value |= DMA_CTRL_RCB_VALUE; | |
1176 | iowrite32(value, hw->hw_addr + REG_DMA_CTRL); | |
1177 | ||
1178 | /* config CMB / SMB */ | |
1179 | value = hw->cmb_rrd | ((u32) hw->cmb_tpd << 16); | |
1180 | iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH); | |
1181 | value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16); | |
1182 | iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER); | |
1183 | iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER); | |
1184 | ||
1185 | /* --- enable CMB / SMB */ | |
1186 | value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN; | |
1187 | iowrite32(value, hw->hw_addr + REG_CSMB_CTRL); | |
1188 | ||
1189 | value = ioread32(adapter->hw.hw_addr + REG_ISR); | |
1190 | if (unlikely((value & ISR_PHY_LINKDOWN) != 0)) | |
1191 | value = 1; /* config failed */ | |
1192 | else | |
1193 | value = 0; | |
1194 | ||
1195 | /* clear all interrupt status */ | |
1196 | iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR); | |
1197 | iowrite32(0, adapter->hw.hw_addr + REG_ISR); | |
1198 | return value; | |
1199 | } | |
1200 | ||
1201 | /* | |
1202 | * atl1_irq_disable - Mask off interrupt generation on the NIC | |
1203 | * @adapter: board private structure | |
1204 | */ | |
1205 | static void atl1_irq_disable(struct atl1_adapter *adapter) | |
1206 | { | |
1207 | atomic_inc(&adapter->irq_sem); | |
1208 | iowrite32(0, adapter->hw.hw_addr + REG_IMR); | |
1209 | ioread32(adapter->hw.hw_addr + REG_IMR); | |
1210 | synchronize_irq(adapter->pdev->irq); | |
1211 | } | |
1212 | ||
1213 | static void atl1_vlan_rx_register(struct net_device *netdev, | |
1214 | struct vlan_group *grp) | |
1215 | { | |
1216 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1217 | unsigned long flags; | |
1218 | u32 ctrl; | |
1219 | ||
1220 | spin_lock_irqsave(&adapter->lock, flags); | |
1221 | /* atl1_irq_disable(adapter); */ | |
1222 | adapter->vlgrp = grp; | |
1223 | ||
1224 | if (grp) { | |
1225 | /* enable VLAN tag insert/strip */ | |
1226 | ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL); | |
1227 | ctrl |= MAC_CTRL_RMV_VLAN; | |
1228 | iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL); | |
1229 | } else { | |
1230 | /* disable VLAN tag insert/strip */ | |
1231 | ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL); | |
1232 | ctrl &= ~MAC_CTRL_RMV_VLAN; | |
1233 | iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL); | |
1234 | } | |
1235 | ||
1236 | /* atl1_irq_enable(adapter); */ | |
1237 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1238 | } | |
1239 | ||
1240 | /* FIXME: justify or remove -- CHS */ | |
1241 | static void atl1_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1242 | { | |
1243 | /* We don't do Vlan filtering */ | |
1244 | return; | |
1245 | } | |
1246 | ||
1247 | /* FIXME: this looks wrong too -- CHS */ | |
1248 | static void atl1_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1249 | { | |
1250 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1251 | unsigned long flags; | |
1252 | ||
1253 | spin_lock_irqsave(&adapter->lock, flags); | |
1254 | /* atl1_irq_disable(adapter); */ | |
5c15bdec | 1255 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
f3cc28c7 JC |
1256 | /* atl1_irq_enable(adapter); */ |
1257 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1258 | /* We don't do Vlan filtering */ | |
1259 | return; | |
1260 | } | |
1261 | ||
1262 | static void atl1_restore_vlan(struct atl1_adapter *adapter) | |
1263 | { | |
1264 | atl1_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
1265 | if (adapter->vlgrp) { | |
1266 | u16 vid; | |
1267 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
5c15bdec | 1268 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
f3cc28c7 JC |
1269 | continue; |
1270 | atl1_vlan_rx_add_vid(adapter->netdev, vid); | |
1271 | } | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | static u16 tpd_avail(struct atl1_tpd_ring *tpd_ring) | |
1276 | { | |
1277 | u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); | |
1278 | u16 next_to_use = atomic_read(&tpd_ring->next_to_use); | |
1279 | return ((next_to_clean > | |
1280 | next_to_use) ? next_to_clean - next_to_use - | |
1281 | 1 : tpd_ring->count + next_to_clean - next_to_use - 1); | |
1282 | } | |
1283 | ||
1284 | static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb, | |
1285 | struct tso_param *tso) | |
1286 | { | |
1287 | /* We enter this function holding a spinlock. */ | |
1288 | u8 ipofst; | |
1289 | int err; | |
1290 | ||
1291 | if (skb_shinfo(skb)->gso_size) { | |
1292 | if (skb_header_cloned(skb)) { | |
1293 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1294 | if (unlikely(err)) | |
1295 | return err; | |
1296 | } | |
1297 | ||
1298 | if (skb->protocol == ntohs(ETH_P_IP)) { | |
1299 | skb->nh.iph->tot_len = 0; | |
1300 | skb->nh.iph->check = 0; | |
1301 | skb->h.th->check = | |
1302 | ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
1303 | skb->nh.iph->daddr, 0, | |
1304 | IPPROTO_TCP, 0); | |
1305 | ipofst = skb->nh.raw - skb->data; | |
1306 | if (ipofst != ENET_HEADER_SIZE) /* 802.3 frame */ | |
1307 | tso->tsopl |= 1 << TSO_PARAM_ETHTYPE_SHIFT; | |
1308 | ||
1309 | tso->tsopl |= (skb->nh.iph->ihl & | |
1310 | CSUM_PARAM_IPHL_MASK) << CSUM_PARAM_IPHL_SHIFT; | |
1311 | tso->tsopl |= ((skb->h.th->doff << 2) & | |
1312 | TSO_PARAM_TCPHDRLEN_MASK) << TSO_PARAM_TCPHDRLEN_SHIFT; | |
1313 | tso->tsopl |= (skb_shinfo(skb)->gso_size & | |
1314 | TSO_PARAM_MSS_MASK) << TSO_PARAM_MSS_SHIFT; | |
1315 | tso->tsopl |= 1 << TSO_PARAM_IPCKSUM_SHIFT; | |
1316 | tso->tsopl |= 1 << TSO_PARAM_TCPCKSUM_SHIFT; | |
1317 | tso->tsopl |= 1 << TSO_PARAM_SEGMENT_SHIFT; | |
1318 | return true; | |
1319 | } | |
1320 | } | |
1321 | return false; | |
1322 | } | |
1323 | ||
1324 | static 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)) { | |
1330 | cso = skb->h.raw - skb->data; | |
1331 | css = (skb->h.raw + skb->csum) - skb->data; | |
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 | ||
1348 | static 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 */ | |
1373 | proto_hdr_len = | |
1374 | ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
1375 | buffer_info->length = proto_hdr_len; | |
1376 | page = virt_to_page(skb->data); | |
1377 | offset = (unsigned long)skb->data & ~PAGE_MASK; | |
1378 | buffer_info->dma = pci_map_page(adapter->pdev, page, | |
1379 | offset, proto_hdr_len, | |
1380 | PCI_DMA_TODEVICE); | |
1381 | ||
1382 | if (++tpd_next_to_use == tpd_ring->count) | |
1383 | tpd_next_to_use = 0; | |
1384 | ||
1385 | if (first_buf_len > proto_hdr_len) { | |
1386 | len12 = first_buf_len - proto_hdr_len; | |
1387 | m = (len12 + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN; | |
1388 | for (i = 0; i < m; i++) { | |
1389 | buffer_info = | |
1390 | &tpd_ring->buffer_info[tpd_next_to_use]; | |
1391 | buffer_info->skb = NULL; | |
1392 | buffer_info->length = | |
1393 | (MAX_TX_BUF_LEN >= | |
1394 | len12) ? MAX_TX_BUF_LEN : len12; | |
1395 | len12 -= buffer_info->length; | |
1396 | page = virt_to_page(skb->data + | |
1397 | (proto_hdr_len + | |
1398 | i * MAX_TX_BUF_LEN)); | |
1399 | offset = (unsigned long)(skb->data + | |
1400 | (proto_hdr_len + | |
1401 | i * MAX_TX_BUF_LEN)) & | |
1402 | ~PAGE_MASK; | |
1403 | buffer_info->dma = | |
1404 | pci_map_page(adapter->pdev, page, offset, | |
1405 | buffer_info->length, | |
1406 | PCI_DMA_TODEVICE); | |
1407 | if (++tpd_next_to_use == tpd_ring->count) | |
1408 | tpd_next_to_use = 0; | |
1409 | } | |
1410 | } | |
1411 | } else { | |
1412 | /* not TSO/GSO */ | |
1413 | buffer_info->length = first_buf_len; | |
1414 | page = virt_to_page(skb->data); | |
1415 | offset = (unsigned long)skb->data & ~PAGE_MASK; | |
1416 | buffer_info->dma = pci_map_page(adapter->pdev, page, | |
1417 | offset, first_buf_len, | |
1418 | PCI_DMA_TODEVICE); | |
1419 | if (++tpd_next_to_use == tpd_ring->count) | |
1420 | tpd_next_to_use = 0; | |
1421 | } | |
1422 | ||
1423 | for (f = 0; f < nr_frags; f++) { | |
1424 | struct skb_frag_struct *frag; | |
1425 | u16 lenf, i, m; | |
1426 | ||
1427 | frag = &skb_shinfo(skb)->frags[f]; | |
1428 | lenf = frag->size; | |
1429 | ||
1430 | m = (lenf + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN; | |
1431 | for (i = 0; i < m; i++) { | |
1432 | buffer_info = &tpd_ring->buffer_info[tpd_next_to_use]; | |
1433 | if (unlikely(buffer_info->skb)) | |
1434 | BUG(); | |
1435 | buffer_info->skb = NULL; | |
1436 | buffer_info->length = | |
1437 | (lenf > MAX_TX_BUF_LEN) ? MAX_TX_BUF_LEN : lenf; | |
1438 | lenf -= buffer_info->length; | |
1439 | buffer_info->dma = | |
1440 | pci_map_page(adapter->pdev, frag->page, | |
1441 | frag->page_offset + i * MAX_TX_BUF_LEN, | |
1442 | buffer_info->length, PCI_DMA_TODEVICE); | |
1443 | ||
1444 | if (++tpd_next_to_use == tpd_ring->count) | |
1445 | tpd_next_to_use = 0; | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | /* last tpd's buffer-info */ | |
1450 | buffer_info->skb = skb; | |
1451 | } | |
1452 | ||
1453 | static void atl1_tx_queue(struct atl1_adapter *adapter, int count, | |
1454 | union tpd_descr *descr) | |
1455 | { | |
1456 | /* We enter this function holding a spinlock. */ | |
1457 | struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; | |
1458 | int j; | |
1459 | u32 val; | |
1460 | struct atl1_buffer *buffer_info; | |
1461 | struct tx_packet_desc *tpd; | |
1462 | u16 tpd_next_to_use = atomic_read(&tpd_ring->next_to_use); | |
1463 | ||
1464 | for (j = 0; j < count; j++) { | |
1465 | buffer_info = &tpd_ring->buffer_info[tpd_next_to_use]; | |
1466 | tpd = ATL1_TPD_DESC(&adapter->tpd_ring, tpd_next_to_use); | |
1467 | tpd->desc.csum.csumpu = descr->csum.csumpu; | |
1468 | tpd->desc.csum.csumpl = descr->csum.csumpl; | |
1469 | tpd->desc.tso.tsopu = descr->tso.tsopu; | |
1470 | tpd->desc.tso.tsopl = descr->tso.tsopl; | |
1471 | tpd->buffer_addr = cpu_to_le64(buffer_info->dma); | |
1472 | tpd->desc.data = descr->data; | |
1473 | tpd->desc.csum.csumpu |= (cpu_to_le16(buffer_info->length) & | |
1474 | CSUM_PARAM_BUFLEN_MASK) << CSUM_PARAM_BUFLEN_SHIFT; | |
1475 | ||
1476 | val = (descr->tso.tsopl >> TSO_PARAM_SEGMENT_SHIFT) & | |
1477 | TSO_PARAM_SEGMENT_MASK; | |
1478 | if (val && !j) | |
1479 | tpd->desc.tso.tsopl |= 1 << TSO_PARAM_HDRFLAG_SHIFT; | |
1480 | ||
1481 | if (j == (count - 1)) | |
1482 | tpd->desc.csum.csumpl |= 1 << CSUM_PARAM_EOP_SHIFT; | |
1483 | ||
1484 | if (++tpd_next_to_use == tpd_ring->count) | |
1485 | tpd_next_to_use = 0; | |
1486 | } | |
1487 | /* | |
1488 | * Force memory writes to complete before letting h/w | |
1489 | * know there are new descriptors to fetch. (Only | |
1490 | * applicable for weak-ordered memory model archs, | |
1491 | * such as IA-64). | |
1492 | */ | |
1493 | wmb(); | |
1494 | ||
1495 | atomic_set(&tpd_ring->next_to_use, (int)tpd_next_to_use); | |
1496 | } | |
1497 | ||
1498 | static void atl1_update_mailbox(struct atl1_adapter *adapter) | |
1499 | { | |
1500 | unsigned long flags; | |
1501 | u32 tpd_next_to_use; | |
1502 | u32 rfd_next_to_use; | |
1503 | u32 rrd_next_to_clean; | |
1504 | u32 value; | |
1505 | ||
1506 | spin_lock_irqsave(&adapter->mb_lock, flags); | |
1507 | ||
1508 | tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use); | |
1509 | rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use); | |
1510 | rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean); | |
1511 | ||
1512 | value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) << | |
1513 | MB_RFD_PROD_INDX_SHIFT) | | |
1514 | ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) << | |
1515 | MB_RRD_CONS_INDX_SHIFT) | | |
1516 | ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) << | |
1517 | MB_TPD_PROD_INDX_SHIFT); | |
1518 | iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX); | |
1519 | ||
1520 | spin_unlock_irqrestore(&adapter->mb_lock, flags); | |
1521 | } | |
1522 | ||
1523 | static int atl1_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1524 | { | |
1525 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1526 | int len = skb->len; | |
1527 | int tso; | |
1528 | int count = 1; | |
1529 | int ret_val; | |
1530 | u32 val; | |
1531 | union tpd_descr param; | |
1532 | u16 frag_size; | |
1533 | u16 vlan_tag; | |
1534 | unsigned long flags; | |
1535 | unsigned int nr_frags = 0; | |
1536 | unsigned int mss = 0; | |
1537 | unsigned int f; | |
1538 | unsigned int proto_hdr_len; | |
1539 | ||
1540 | len -= skb->data_len; | |
1541 | ||
1542 | if (unlikely(skb->len == 0)) { | |
1543 | dev_kfree_skb_any(skb); | |
1544 | return NETDEV_TX_OK; | |
1545 | } | |
1546 | ||
1547 | param.data = 0; | |
1548 | param.tso.tsopu = 0; | |
1549 | param.tso.tsopl = 0; | |
1550 | param.csum.csumpu = 0; | |
1551 | param.csum.csumpl = 0; | |
1552 | ||
1553 | /* nr_frags will be nonzero if we're doing scatter/gather (SG) */ | |
1554 | nr_frags = skb_shinfo(skb)->nr_frags; | |
1555 | for (f = 0; f < nr_frags; f++) { | |
1556 | frag_size = skb_shinfo(skb)->frags[f].size; | |
1557 | if (frag_size) | |
1558 | count += | |
1559 | (frag_size + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN; | |
1560 | } | |
1561 | ||
1562 | /* mss will be nonzero if we're doing segment offload (TSO/GSO) */ | |
1563 | mss = skb_shinfo(skb)->gso_size; | |
1564 | if (mss) { | |
1565 | if (skb->protocol == ntohs(ETH_P_IP)) { | |
1566 | proto_hdr_len = ((skb->h.raw - skb->data) + | |
1567 | (skb->h.th->doff << 2)); | |
1568 | if (unlikely(proto_hdr_len > len)) { | |
1569 | dev_kfree_skb_any(skb); | |
1570 | return NETDEV_TX_OK; | |
1571 | } | |
1572 | /* need additional TPD ? */ | |
1573 | if (proto_hdr_len != len) | |
1574 | count += (len - proto_hdr_len + | |
1575 | MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN; | |
1576 | } | |
1577 | } | |
1578 | ||
1579 | local_irq_save(flags); | |
1580 | if (!spin_trylock(&adapter->lock)) { | |
1581 | /* Can't get lock - tell upper layer to requeue */ | |
1582 | local_irq_restore(flags); | |
1583 | printk(KERN_DEBUG "%s: TX locked\n", atl1_driver_name); | |
1584 | return NETDEV_TX_LOCKED; | |
1585 | } | |
1586 | ||
1587 | if (tpd_avail(&adapter->tpd_ring) < count) { | |
1588 | /* not enough descriptors */ | |
1589 | netif_stop_queue(netdev); | |
1590 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1591 | printk(KERN_DEBUG "%s: TX busy\n", atl1_driver_name); | |
1592 | return NETDEV_TX_BUSY; | |
1593 | } | |
1594 | ||
1595 | param.data = 0; | |
1596 | ||
1597 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
1598 | vlan_tag = vlan_tx_tag_get(skb); | |
1599 | vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) | | |
1600 | ((vlan_tag >> 9) & 0x8); | |
1601 | param.csum.csumpl |= 1 << CSUM_PARAM_INSVLAG_SHIFT; | |
1602 | param.csum.csumpu |= (vlan_tag & CSUM_PARAM_VALANTAG_MASK) << | |
1603 | CSUM_PARAM_VALAN_SHIFT; | |
1604 | } | |
1605 | ||
1606 | tso = atl1_tso(adapter, skb, ¶m.tso); | |
1607 | if (tso < 0) { | |
1608 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1609 | dev_kfree_skb_any(skb); | |
1610 | return NETDEV_TX_OK; | |
1611 | } | |
1612 | ||
1613 | if (!tso) { | |
1614 | ret_val = atl1_tx_csum(adapter, skb, ¶m.csum); | |
1615 | if (ret_val < 0) { | |
1616 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1617 | dev_kfree_skb_any(skb); | |
1618 | return NETDEV_TX_OK; | |
1619 | } | |
1620 | } | |
1621 | ||
1622 | val = (param.csum.csumpl >> CSUM_PARAM_SEGMENT_SHIFT) & | |
1623 | CSUM_PARAM_SEGMENT_MASK; | |
1624 | atl1_tx_map(adapter, skb, 1 == val); | |
1625 | atl1_tx_queue(adapter, count, ¶m); | |
1626 | netdev->trans_start = jiffies; | |
1627 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1628 | atl1_update_mailbox(adapter); | |
1629 | return NETDEV_TX_OK; | |
1630 | } | |
1631 | ||
1632 | /* | |
1633 | * atl1_get_stats - Get System Network Statistics | |
1634 | * @netdev: network interface device structure | |
1635 | * | |
1636 | * Returns the address of the device statistics structure. | |
1637 | * The statistics are actually updated from the timer callback. | |
1638 | */ | |
1639 | static struct net_device_stats *atl1_get_stats(struct net_device *netdev) | |
1640 | { | |
1641 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1642 | return &adapter->net_stats; | |
1643 | } | |
1644 | ||
1645 | /* | |
1646 | * atl1_clean_rx_ring - Free RFD Buffers | |
1647 | * @adapter: board private structure | |
1648 | */ | |
1649 | static void atl1_clean_rx_ring(struct atl1_adapter *adapter) | |
1650 | { | |
1651 | struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; | |
1652 | struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
1653 | struct atl1_buffer *buffer_info; | |
1654 | struct pci_dev *pdev = adapter->pdev; | |
1655 | unsigned long size; | |
1656 | unsigned int i; | |
1657 | ||
1658 | /* Free all the Rx ring sk_buffs */ | |
1659 | for (i = 0; i < rfd_ring->count; i++) { | |
1660 | buffer_info = &rfd_ring->buffer_info[i]; | |
1661 | if (buffer_info->dma) { | |
1662 | pci_unmap_page(pdev, | |
1663 | buffer_info->dma, | |
1664 | buffer_info->length, | |
1665 | PCI_DMA_FROMDEVICE); | |
1666 | buffer_info->dma = 0; | |
1667 | } | |
1668 | if (buffer_info->skb) { | |
1669 | dev_kfree_skb(buffer_info->skb); | |
1670 | buffer_info->skb = NULL; | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | size = sizeof(struct atl1_buffer) * rfd_ring->count; | |
1675 | memset(rfd_ring->buffer_info, 0, size); | |
1676 | ||
1677 | /* Zero out the descriptor ring */ | |
1678 | memset(rfd_ring->desc, 0, rfd_ring->size); | |
1679 | ||
1680 | rfd_ring->next_to_clean = 0; | |
1681 | atomic_set(&rfd_ring->next_to_use, 0); | |
1682 | ||
1683 | rrd_ring->next_to_use = 0; | |
1684 | atomic_set(&rrd_ring->next_to_clean, 0); | |
1685 | } | |
1686 | ||
1687 | /* | |
1688 | * atl1_clean_tx_ring - Free Tx Buffers | |
1689 | * @adapter: board private structure | |
1690 | */ | |
1691 | static void atl1_clean_tx_ring(struct atl1_adapter *adapter) | |
1692 | { | |
1693 | struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; | |
1694 | struct atl1_buffer *buffer_info; | |
1695 | struct pci_dev *pdev = adapter->pdev; | |
1696 | unsigned long size; | |
1697 | unsigned int i; | |
1698 | ||
1699 | /* Free all the Tx ring sk_buffs */ | |
1700 | for (i = 0; i < tpd_ring->count; i++) { | |
1701 | buffer_info = &tpd_ring->buffer_info[i]; | |
1702 | if (buffer_info->dma) { | |
1703 | pci_unmap_page(pdev, buffer_info->dma, | |
1704 | buffer_info->length, PCI_DMA_TODEVICE); | |
1705 | buffer_info->dma = 0; | |
1706 | } | |
1707 | } | |
1708 | ||
1709 | for (i = 0; i < tpd_ring->count; i++) { | |
1710 | buffer_info = &tpd_ring->buffer_info[i]; | |
1711 | if (buffer_info->skb) { | |
1712 | dev_kfree_skb_any(buffer_info->skb); | |
1713 | buffer_info->skb = NULL; | |
1714 | } | |
1715 | } | |
1716 | ||
1717 | size = sizeof(struct atl1_buffer) * tpd_ring->count; | |
1718 | memset(tpd_ring->buffer_info, 0, size); | |
1719 | ||
1720 | /* Zero out the descriptor ring */ | |
1721 | memset(tpd_ring->desc, 0, tpd_ring->size); | |
1722 | ||
1723 | atomic_set(&tpd_ring->next_to_use, 0); | |
1724 | atomic_set(&tpd_ring->next_to_clean, 0); | |
1725 | } | |
1726 | ||
1727 | /* | |
1728 | * atl1_free_ring_resources - Free Tx / RX descriptor Resources | |
1729 | * @adapter: board private structure | |
1730 | * | |
1731 | * Free all transmit software resources | |
1732 | */ | |
1733 | void atl1_free_ring_resources(struct atl1_adapter *adapter) | |
1734 | { | |
1735 | struct pci_dev *pdev = adapter->pdev; | |
1736 | struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; | |
1737 | struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; | |
1738 | struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; | |
1739 | struct atl1_ring_header *ring_header = &adapter->ring_header; | |
1740 | ||
1741 | atl1_clean_tx_ring(adapter); | |
1742 | atl1_clean_rx_ring(adapter); | |
1743 | ||
1744 | kfree(tpd_ring->buffer_info); | |
1745 | pci_free_consistent(pdev, ring_header->size, ring_header->desc, | |
1746 | ring_header->dma); | |
1747 | ||
1748 | tpd_ring->buffer_info = NULL; | |
1749 | tpd_ring->desc = NULL; | |
1750 | tpd_ring->dma = 0; | |
1751 | ||
1752 | rfd_ring->buffer_info = NULL; | |
1753 | rfd_ring->desc = NULL; | |
1754 | rfd_ring->dma = 0; | |
1755 | ||
1756 | rrd_ring->desc = NULL; | |
1757 | rrd_ring->dma = 0; | |
1758 | } | |
1759 | ||
1760 | s32 atl1_up(struct atl1_adapter *adapter) | |
1761 | { | |
1762 | struct net_device *netdev = adapter->netdev; | |
1763 | int err; | |
1764 | int irq_flags = IRQF_SAMPLE_RANDOM; | |
1765 | ||
1766 | /* hardware has been reset, we need to reload some things */ | |
1767 | atl1_set_multi(netdev); | |
1768 | atl1_restore_vlan(adapter); | |
1769 | err = atl1_alloc_rx_buffers(adapter); | |
1770 | if (unlikely(!err)) /* no RX BUFFER allocated */ | |
1771 | return -ENOMEM; | |
1772 | ||
1773 | if (unlikely(atl1_configure(adapter))) { | |
1774 | err = -EIO; | |
1775 | goto err_up; | |
1776 | } | |
1777 | ||
1778 | err = pci_enable_msi(adapter->pdev); | |
1779 | if (err) { | |
1780 | dev_info(&adapter->pdev->dev, | |
1781 | "Unable to enable MSI: %d\n", err); | |
1782 | irq_flags |= IRQF_SHARED; | |
1783 | } | |
1784 | ||
1785 | err = request_irq(adapter->pdev->irq, &atl1_intr, irq_flags, | |
1786 | netdev->name, netdev); | |
1787 | if (unlikely(err)) | |
1788 | goto err_up; | |
1789 | ||
1790 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1791 | atl1_irq_enable(adapter); | |
1792 | atl1_check_link(adapter); | |
1793 | return 0; | |
1794 | ||
1795 | /* FIXME: unreachable code! -- CHS */ | |
1796 | /* free irq disable any interrupt */ | |
1797 | iowrite32(0, adapter->hw.hw_addr + REG_IMR); | |
1798 | free_irq(adapter->pdev->irq, netdev); | |
1799 | ||
1800 | err_up: | |
1801 | pci_disable_msi(adapter->pdev); | |
1802 | /* free rx_buffers */ | |
1803 | atl1_clean_rx_ring(adapter); | |
1804 | return err; | |
1805 | } | |
1806 | ||
1807 | void atl1_down(struct atl1_adapter *adapter) | |
1808 | { | |
1809 | struct net_device *netdev = adapter->netdev; | |
1810 | ||
1811 | del_timer_sync(&adapter->watchdog_timer); | |
1812 | del_timer_sync(&adapter->phy_config_timer); | |
1813 | adapter->phy_timer_pending = false; | |
1814 | ||
1815 | atl1_irq_disable(adapter); | |
1816 | free_irq(adapter->pdev->irq, netdev); | |
1817 | pci_disable_msi(adapter->pdev); | |
1818 | atl1_reset_hw(&adapter->hw); | |
1819 | adapter->cmb.cmb->int_stats = 0; | |
1820 | ||
1821 | adapter->link_speed = SPEED_0; | |
1822 | adapter->link_duplex = -1; | |
1823 | netif_carrier_off(netdev); | |
1824 | netif_stop_queue(netdev); | |
1825 | ||
1826 | atl1_clean_tx_ring(adapter); | |
1827 | atl1_clean_rx_ring(adapter); | |
1828 | } | |
1829 | ||
1830 | /* | |
1831 | * atl1_change_mtu - Change the Maximum Transfer Unit | |
1832 | * @netdev: network interface device structure | |
1833 | * @new_mtu: new value for maximum frame size | |
1834 | * | |
1835 | * Returns 0 on success, negative on failure | |
1836 | */ | |
1837 | static int atl1_change_mtu(struct net_device *netdev, int new_mtu) | |
1838 | { | |
1839 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1840 | int old_mtu = netdev->mtu; | |
1841 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1842 | ||
1843 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || | |
1844 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
1845 | printk(KERN_WARNING "%s: invalid MTU setting\n", | |
1846 | atl1_driver_name); | |
1847 | return -EINVAL; | |
1848 | } | |
1849 | ||
1850 | adapter->hw.max_frame_size = max_frame; | |
1851 | adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3; | |
1852 | adapter->rx_buffer_len = (max_frame + 7) & ~7; | |
1853 | adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8; | |
1854 | ||
1855 | netdev->mtu = new_mtu; | |
1856 | if ((old_mtu != new_mtu) && netif_running(netdev)) { | |
1857 | atl1_down(adapter); | |
1858 | atl1_up(adapter); | |
1859 | } | |
1860 | ||
1861 | return 0; | |
1862 | } | |
1863 | ||
1864 | /* | |
1865 | * atl1_set_mac - Change the Ethernet Address of the NIC | |
1866 | * @netdev: network interface device structure | |
1867 | * @p: pointer to an address structure | |
1868 | * | |
1869 | * Returns 0 on success, negative on failure | |
1870 | */ | |
1871 | static int atl1_set_mac(struct net_device *netdev, void *p) | |
1872 | { | |
1873 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1874 | struct sockaddr *addr = p; | |
1875 | ||
1876 | if (netif_running(netdev)) | |
1877 | return -EBUSY; | |
1878 | ||
1879 | if (!is_valid_ether_addr(addr->sa_data)) | |
1880 | return -EADDRNOTAVAIL; | |
1881 | ||
1882 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1883 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
1884 | ||
1885 | atl1_set_mac_addr(&adapter->hw); | |
1886 | return 0; | |
1887 | } | |
1888 | ||
1889 | /* | |
1890 | * atl1_watchdog - Timer Call-back | |
1891 | * @data: pointer to netdev cast into an unsigned long | |
1892 | */ | |
1893 | static void atl1_watchdog(unsigned long data) | |
1894 | { | |
1895 | struct atl1_adapter *adapter = (struct atl1_adapter *)data; | |
1896 | ||
1897 | /* Reset the timer */ | |
1898 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1899 | } | |
1900 | ||
1901 | static int mdio_read(struct net_device *netdev, int phy_id, int reg_num) | |
1902 | { | |
1903 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1904 | u16 result; | |
1905 | ||
1906 | atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result); | |
1907 | ||
1908 | return result; | |
1909 | } | |
1910 | ||
1911 | static void mdio_write(struct net_device *netdev, int phy_id, int reg_num, int val) | |
1912 | { | |
1913 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1914 | ||
1915 | atl1_write_phy_reg(&adapter->hw, reg_num, val); | |
1916 | } | |
1917 | ||
1918 | /* | |
1919 | * atl1_mii_ioctl - | |
1920 | * @netdev: | |
1921 | * @ifreq: | |
1922 | * @cmd: | |
1923 | */ | |
1924 | static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
1925 | { | |
1926 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1927 | unsigned long flags; | |
1928 | int retval; | |
1929 | ||
1930 | if (!netif_running(netdev)) | |
1931 | return -EINVAL; | |
1932 | ||
1933 | spin_lock_irqsave(&adapter->lock, flags); | |
1934 | retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL); | |
1935 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1936 | ||
1937 | return retval; | |
1938 | } | |
1939 | ||
1940 | /* | |
1941 | * atl1_ioctl - | |
1942 | * @netdev: | |
1943 | * @ifreq: | |
1944 | * @cmd: | |
1945 | */ | |
1946 | static int atl1_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
1947 | { | |
1948 | switch (cmd) { | |
1949 | case SIOCGMIIPHY: | |
1950 | case SIOCGMIIREG: | |
1951 | case SIOCSMIIREG: | |
1952 | return atl1_mii_ioctl(netdev, ifr, cmd); | |
1953 | default: | |
1954 | return -EOPNOTSUPP; | |
1955 | } | |
1956 | } | |
1957 | ||
1958 | /* | |
1959 | * atl1_tx_timeout - Respond to a Tx Hang | |
1960 | * @netdev: network interface device structure | |
1961 | */ | |
1962 | static void atl1_tx_timeout(struct net_device *netdev) | |
1963 | { | |
1964 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
1965 | /* Do the reset outside of interrupt context */ | |
1966 | schedule_work(&adapter->tx_timeout_task); | |
1967 | } | |
1968 | ||
1969 | /* | |
1970 | * atl1_phy_config - Timer Call-back | |
1971 | * @data: pointer to netdev cast into an unsigned long | |
1972 | */ | |
1973 | static void atl1_phy_config(unsigned long data) | |
1974 | { | |
1975 | struct atl1_adapter *adapter = (struct atl1_adapter *)data; | |
1976 | struct atl1_hw *hw = &adapter->hw; | |
1977 | unsigned long flags; | |
1978 | ||
1979 | spin_lock_irqsave(&adapter->lock, flags); | |
1980 | adapter->phy_timer_pending = false; | |
1981 | atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg); | |
1982 | atl1_write_phy_reg(hw, MII_AT001_CR, hw->mii_1000t_ctrl_reg); | |
1983 | atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN); | |
1984 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1985 | } | |
1986 | ||
1987 | int atl1_reset(struct atl1_adapter *adapter) | |
1988 | { | |
1989 | int ret; | |
1990 | ||
1991 | ret = atl1_reset_hw(&adapter->hw); | |
1992 | if (ret != ATL1_SUCCESS) | |
1993 | return ret; | |
1994 | return atl1_init_hw(&adapter->hw); | |
1995 | } | |
1996 | ||
1997 | /* | |
1998 | * atl1_open - Called when a network interface is made active | |
1999 | * @netdev: network interface device structure | |
2000 | * | |
2001 | * Returns 0 on success, negative value on failure | |
2002 | * | |
2003 | * The open entry point is called when a network interface is made | |
2004 | * active by the system (IFF_UP). At this point all resources needed | |
2005 | * for transmit and receive operations are allocated, the interrupt | |
2006 | * handler is registered with the OS, the watchdog timer is started, | |
2007 | * and the stack is notified that the interface is ready. | |
2008 | */ | |
2009 | static int atl1_open(struct net_device *netdev) | |
2010 | { | |
2011 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
2012 | int err; | |
2013 | ||
2014 | /* allocate transmit descriptors */ | |
2015 | err = atl1_setup_ring_resources(adapter); | |
2016 | if (err) | |
2017 | return err; | |
2018 | ||
2019 | err = atl1_up(adapter); | |
2020 | if (err) | |
2021 | goto err_up; | |
2022 | ||
2023 | return 0; | |
2024 | ||
2025 | err_up: | |
2026 | atl1_reset(adapter); | |
2027 | return err; | |
2028 | } | |
2029 | ||
2030 | /* | |
2031 | * atl1_close - Disables a network interface | |
2032 | * @netdev: network interface device structure | |
2033 | * | |
2034 | * Returns 0, this is not allowed to fail | |
2035 | * | |
2036 | * The close entry point is called when an interface is de-activated | |
2037 | * by the OS. The hardware is still under the drivers control, but | |
2038 | * needs to be disabled. A global MAC reset is issued to stop the | |
2039 | * hardware, and all transmit and receive resources are freed. | |
2040 | */ | |
2041 | static int atl1_close(struct net_device *netdev) | |
2042 | { | |
2043 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
2044 | atl1_down(adapter); | |
2045 | atl1_free_ring_resources(adapter); | |
2046 | return 0; | |
2047 | } | |
2048 | ||
2049 | /* | |
2050 | * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT | |
2051 | * will assert. We do soft reset <0x1400=1> according | |
2052 | * with the SPEC. BUT, it seemes that PCIE or DMA | |
2053 | * state-machine will not be reset. DMAR_TO_INT will | |
2054 | * assert again and again. | |
2055 | */ | |
2056 | static void atl1_tx_timeout_task(struct work_struct *work) | |
2057 | { | |
2058 | struct atl1_adapter *adapter = | |
2059 | container_of(work, struct atl1_adapter, tx_timeout_task); | |
2060 | struct net_device *netdev = adapter->netdev; | |
2061 | ||
2062 | netif_device_detach(netdev); | |
2063 | atl1_down(adapter); | |
2064 | atl1_up(adapter); | |
2065 | netif_device_attach(netdev); | |
2066 | } | |
2067 | ||
2068 | /* | |
2069 | * atl1_link_chg_task - deal with link change event Out of interrupt context | |
2070 | */ | |
2071 | static void atl1_link_chg_task(struct work_struct *work) | |
2072 | { | |
2073 | struct atl1_adapter *adapter = | |
2074 | container_of(work, struct atl1_adapter, link_chg_task); | |
2075 | unsigned long flags; | |
2076 | ||
2077 | spin_lock_irqsave(&adapter->lock, flags); | |
2078 | atl1_check_link(adapter); | |
2079 | spin_unlock_irqrestore(&adapter->lock, flags); | |
2080 | } | |
2081 | ||
2082 | /* | |
2083 | * atl1_pcie_patch - Patch for PCIE module | |
2084 | */ | |
2085 | static void atl1_pcie_patch(struct atl1_adapter *adapter) | |
2086 | { | |
2087 | u32 value; | |
2088 | value = 0x6500; | |
2089 | iowrite32(value, adapter->hw.hw_addr + 0x12FC); | |
2090 | /* pcie flow control mode change */ | |
2091 | value = ioread32(adapter->hw.hw_addr + 0x1008); | |
2092 | value |= 0x8000; | |
2093 | iowrite32(value, adapter->hw.hw_addr + 0x1008); | |
2094 | } | |
2095 | ||
2096 | /* | |
2097 | * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400 | |
2098 | * on PCI Command register is disable. | |
2099 | * The function enable this bit. | |
2100 | * Brackett, 2006/03/15 | |
2101 | */ | |
2102 | static void atl1_via_workaround(struct atl1_adapter *adapter) | |
2103 | { | |
2104 | unsigned long value; | |
2105 | ||
2106 | value = ioread16(adapter->hw.hw_addr + PCI_COMMAND); | |
2107 | if (value & PCI_COMMAND_INTX_DISABLE) | |
2108 | value &= ~PCI_COMMAND_INTX_DISABLE; | |
2109 | iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND); | |
2110 | } | |
2111 | ||
2112 | /* | |
2113 | * atl1_probe - Device Initialization Routine | |
2114 | * @pdev: PCI device information struct | |
2115 | * @ent: entry in atl1_pci_tbl | |
2116 | * | |
2117 | * Returns 0 on success, negative on failure | |
2118 | * | |
2119 | * atl1_probe initializes an adapter identified by a pci_dev structure. | |
2120 | * The OS initialization, configuring of the adapter private structure, | |
2121 | * and a hardware reset occur. | |
2122 | */ | |
2123 | static int __devinit atl1_probe(struct pci_dev *pdev, | |
2124 | const struct pci_device_id *ent) | |
2125 | { | |
2126 | struct net_device *netdev; | |
2127 | struct atl1_adapter *adapter; | |
2128 | static int cards_found = 0; | |
2129 | bool pci_using_64 = true; | |
2130 | int err; | |
2131 | ||
2132 | err = pci_enable_device(pdev); | |
2133 | if (err) | |
2134 | return err; | |
2135 | ||
2136 | err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); | |
2137 | if (err) { | |
2138 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
2139 | if (err) { | |
2140 | printk(KERN_DEBUG | |
2141 | "%s: no usable DMA configuration, aborting\n", | |
2142 | atl1_driver_name); | |
2143 | goto err_dma; | |
2144 | } | |
2145 | pci_using_64 = false; | |
2146 | } | |
2147 | /* Mark all PCI regions associated with PCI device | |
2148 | * pdev as being reserved by owner atl1_driver_name | |
2149 | */ | |
2150 | err = pci_request_regions(pdev, atl1_driver_name); | |
2151 | if (err) | |
2152 | goto err_request_regions; | |
2153 | ||
2154 | /* Enables bus-mastering on the device and calls | |
2155 | * pcibios_set_master to do the needed arch specific settings | |
2156 | */ | |
2157 | pci_set_master(pdev); | |
2158 | ||
2159 | netdev = alloc_etherdev(sizeof(struct atl1_adapter)); | |
2160 | if (!netdev) { | |
2161 | err = -ENOMEM; | |
2162 | goto err_alloc_etherdev; | |
2163 | } | |
2164 | SET_MODULE_OWNER(netdev); | |
2165 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2166 | ||
2167 | pci_set_drvdata(pdev, netdev); | |
2168 | adapter = netdev_priv(netdev); | |
2169 | adapter->netdev = netdev; | |
2170 | adapter->pdev = pdev; | |
2171 | adapter->hw.back = adapter; | |
2172 | ||
2173 | adapter->hw.hw_addr = pci_iomap(pdev, 0, 0); | |
2174 | if (!adapter->hw.hw_addr) { | |
2175 | err = -EIO; | |
2176 | goto err_pci_iomap; | |
2177 | } | |
2178 | /* get device revision number */ | |
2179 | adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr + (REG_MASTER_CTRL + 2)); | |
2180 | ||
2181 | /* set default ring resource counts */ | |
2182 | adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD; | |
2183 | adapter->tpd_ring.count = ATL1_DEFAULT_TPD; | |
2184 | ||
2185 | adapter->mii.dev = netdev; | |
2186 | adapter->mii.mdio_read = mdio_read; | |
2187 | adapter->mii.mdio_write = mdio_write; | |
2188 | adapter->mii.phy_id_mask = 0x1f; | |
2189 | adapter->mii.reg_num_mask = 0x1f; | |
2190 | ||
2191 | netdev->open = &atl1_open; | |
2192 | netdev->stop = &atl1_close; | |
2193 | netdev->hard_start_xmit = &atl1_xmit_frame; | |
2194 | netdev->get_stats = &atl1_get_stats; | |
2195 | netdev->set_multicast_list = &atl1_set_multi; | |
2196 | netdev->set_mac_address = &atl1_set_mac; | |
2197 | netdev->change_mtu = &atl1_change_mtu; | |
2198 | netdev->do_ioctl = &atl1_ioctl; | |
2199 | netdev->tx_timeout = &atl1_tx_timeout; | |
2200 | netdev->watchdog_timeo = 5 * HZ; | |
2201 | netdev->vlan_rx_register = atl1_vlan_rx_register; | |
2202 | netdev->vlan_rx_add_vid = atl1_vlan_rx_add_vid; | |
2203 | netdev->vlan_rx_kill_vid = atl1_vlan_rx_kill_vid; | |
2204 | netdev->ethtool_ops = &atl1_ethtool_ops; | |
2205 | adapter->bd_number = cards_found; | |
2206 | adapter->pci_using_64 = pci_using_64; | |
2207 | ||
2208 | /* setup the private structure */ | |
2209 | err = atl1_sw_init(adapter); | |
2210 | if (err) | |
2211 | goto err_common; | |
2212 | ||
2213 | netdev->features = NETIF_F_HW_CSUM; | |
2214 | netdev->features |= NETIF_F_SG; | |
2215 | netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX); | |
2216 | ||
2217 | /* | |
2218 | * FIXME - Until tso performance gets fixed, disable the feature. | |
2219 | * Enable it with ethtool -K if desired. | |
2220 | */ | |
2221 | /* netdev->features |= NETIF_F_TSO; */ | |
2222 | ||
2223 | if (pci_using_64) | |
2224 | netdev->features |= NETIF_F_HIGHDMA; | |
2225 | ||
2226 | netdev->features |= NETIF_F_LLTX; | |
2227 | ||
2228 | /* | |
2229 | * patch for some L1 of old version, | |
2230 | * the final version of L1 may not need these | |
2231 | * patches | |
2232 | */ | |
2233 | /* atl1_pcie_patch(adapter); */ | |
2234 | ||
2235 | /* really reset GPHY core */ | |
2236 | iowrite16(0, adapter->hw.hw_addr + REG_GPHY_ENABLE); | |
2237 | ||
2238 | /* | |
2239 | * reset the controller to | |
2240 | * put the device in a known good starting state | |
2241 | */ | |
2242 | if (atl1_reset_hw(&adapter->hw)) { | |
2243 | err = -EIO; | |
2244 | goto err_common; | |
2245 | } | |
2246 | ||
2247 | /* copy the MAC address out of the EEPROM */ | |
2248 | atl1_read_mac_addr(&adapter->hw); | |
2249 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
2250 | ||
2251 | if (!is_valid_ether_addr(netdev->dev_addr)) { | |
2252 | err = -EIO; | |
2253 | goto err_common; | |
2254 | } | |
2255 | ||
2256 | atl1_check_options(adapter); | |
2257 | ||
2258 | /* pre-init the MAC, and setup link */ | |
2259 | err = atl1_init_hw(&adapter->hw); | |
2260 | if (err) { | |
2261 | err = -EIO; | |
2262 | goto err_common; | |
2263 | } | |
2264 | ||
2265 | atl1_pcie_patch(adapter); | |
2266 | /* assume we have no link for now */ | |
2267 | netif_carrier_off(netdev); | |
2268 | netif_stop_queue(netdev); | |
2269 | ||
2270 | init_timer(&adapter->watchdog_timer); | |
2271 | adapter->watchdog_timer.function = &atl1_watchdog; | |
2272 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
2273 | ||
2274 | init_timer(&adapter->phy_config_timer); | |
2275 | adapter->phy_config_timer.function = &atl1_phy_config; | |
2276 | adapter->phy_config_timer.data = (unsigned long)adapter; | |
2277 | adapter->phy_timer_pending = false; | |
2278 | ||
2279 | INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task); | |
2280 | ||
2281 | INIT_WORK(&adapter->link_chg_task, atl1_link_chg_task); | |
2282 | ||
2283 | INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task); | |
2284 | ||
2285 | err = register_netdev(netdev); | |
2286 | if (err) | |
2287 | goto err_common; | |
2288 | ||
2289 | cards_found++; | |
2290 | atl1_via_workaround(adapter); | |
2291 | return 0; | |
2292 | ||
2293 | err_common: | |
2294 | pci_iounmap(pdev, adapter->hw.hw_addr); | |
2295 | err_pci_iomap: | |
2296 | free_netdev(netdev); | |
2297 | err_alloc_etherdev: | |
2298 | pci_release_regions(pdev); | |
2299 | err_dma: | |
2300 | err_request_regions: | |
2301 | pci_disable_device(pdev); | |
2302 | return err; | |
2303 | } | |
2304 | ||
2305 | /* | |
2306 | * atl1_remove - Device Removal Routine | |
2307 | * @pdev: PCI device information struct | |
2308 | * | |
2309 | * atl1_remove is called by the PCI subsystem to alert the driver | |
2310 | * that it should release a PCI device. The could be caused by a | |
2311 | * Hot-Plug event, or because the driver is going to be removed from | |
2312 | * memory. | |
2313 | */ | |
2314 | static void __devexit atl1_remove(struct pci_dev *pdev) | |
2315 | { | |
2316 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2317 | struct atl1_adapter *adapter; | |
2318 | /* Device not available. Return. */ | |
2319 | if (!netdev) | |
2320 | return; | |
2321 | ||
2322 | adapter = netdev_priv(netdev); | |
2323 | iowrite16(0, adapter->hw.hw_addr + REG_GPHY_ENABLE); | |
2324 | unregister_netdev(netdev); | |
2325 | pci_iounmap(pdev, adapter->hw.hw_addr); | |
2326 | pci_release_regions(pdev); | |
2327 | free_netdev(netdev); | |
2328 | pci_disable_device(pdev); | |
2329 | } | |
2330 | ||
2331 | #ifdef CONFIG_PM | |
2332 | static int atl1_suspend(struct pci_dev *pdev, pm_message_t state) | |
2333 | { | |
2334 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2335 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
2336 | struct atl1_hw *hw = &adapter->hw; | |
2337 | u32 ctrl = 0; | |
2338 | u32 wufc = adapter->wol; | |
2339 | ||
2340 | netif_device_detach(netdev); | |
2341 | if (netif_running(netdev)) | |
2342 | atl1_down(adapter); | |
2343 | ||
2344 | atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl); | |
2345 | atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl); | |
2346 | if (ctrl & BMSR_LSTATUS) | |
2347 | wufc &= ~ATL1_WUFC_LNKC; | |
2348 | ||
2349 | /* reduce speed to 10/100M */ | |
2350 | if (wufc) { | |
2351 | atl1_phy_enter_power_saving(hw); | |
2352 | /* if resume, let driver to re- setup link */ | |
2353 | hw->phy_configured = false; | |
2354 | atl1_set_mac_addr(hw); | |
2355 | atl1_set_multi(netdev); | |
2356 | ||
2357 | ctrl = 0; | |
2358 | /* turn on magic packet wol */ | |
2359 | if (wufc & ATL1_WUFC_MAG) | |
2360 | ctrl = WOL_MAGIC_EN | WOL_MAGIC_PME_EN; | |
2361 | ||
2362 | /* turn on Link change WOL */ | |
2363 | if (wufc & ATL1_WUFC_LNKC) | |
2364 | ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN); | |
2365 | iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL); | |
2366 | ||
2367 | /* turn on all-multi mode if wake on multicast is enabled */ | |
2368 | ctrl = ioread32(hw->hw_addr + REG_MAC_CTRL); | |
2369 | ctrl &= ~MAC_CTRL_DBG; | |
2370 | ctrl &= ~MAC_CTRL_PROMIS_EN; | |
2371 | if (wufc & ATL1_WUFC_MC) | |
2372 | ctrl |= MAC_CTRL_MC_ALL_EN; | |
2373 | else | |
2374 | ctrl &= ~MAC_CTRL_MC_ALL_EN; | |
2375 | ||
2376 | /* turn on broadcast mode if wake on-BC is enabled */ | |
2377 | if (wufc & ATL1_WUFC_BC) | |
2378 | ctrl |= MAC_CTRL_BC_EN; | |
2379 | else | |
2380 | ctrl &= ~MAC_CTRL_BC_EN; | |
2381 | ||
2382 | /* enable RX */ | |
2383 | ctrl |= MAC_CTRL_RX_EN; | |
2384 | iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL); | |
2385 | pci_enable_wake(pdev, PCI_D3hot, 1); | |
2386 | pci_enable_wake(pdev, PCI_D3cold, 1); /* 4 == D3 cold */ | |
2387 | } else { | |
2388 | iowrite32(0, hw->hw_addr + REG_WOL_CTRL); | |
2389 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2390 | pci_enable_wake(pdev, PCI_D3cold, 0); /* 4 == D3 cold */ | |
2391 | } | |
2392 | ||
2393 | pci_save_state(pdev); | |
2394 | pci_disable_device(pdev); | |
2395 | ||
2396 | pci_set_power_state(pdev, PCI_D3hot); | |
2397 | ||
2398 | return 0; | |
2399 | } | |
2400 | ||
2401 | static int atl1_resume(struct pci_dev *pdev) | |
2402 | { | |
2403 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2404 | struct atl1_adapter *adapter = netdev_priv(netdev); | |
2405 | u32 ret_val; | |
2406 | ||
2407 | pci_set_power_state(pdev, 0); | |
2408 | pci_restore_state(pdev); | |
2409 | ||
2410 | ret_val = pci_enable_device(pdev); | |
2411 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2412 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2413 | ||
2414 | iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL); | |
2415 | atl1_reset(adapter); | |
2416 | ||
2417 | if (netif_running(netdev)) | |
2418 | atl1_up(adapter); | |
2419 | netif_device_attach(netdev); | |
2420 | ||
2421 | atl1_via_workaround(adapter); | |
2422 | ||
2423 | return 0; | |
2424 | } | |
2425 | #else | |
2426 | #define atl1_suspend NULL | |
2427 | #define atl1_resume NULL | |
2428 | #endif | |
2429 | ||
2430 | static struct pci_driver atl1_driver = { | |
2431 | .name = atl1_driver_name, | |
2432 | .id_table = atl1_pci_tbl, | |
2433 | .probe = atl1_probe, | |
2434 | .remove = __devexit_p(atl1_remove), | |
2435 | /* Power Managment Hooks */ | |
2436 | /* probably broken right now -- CHS */ | |
2437 | .suspend = atl1_suspend, | |
2438 | .resume = atl1_resume | |
2439 | }; | |
2440 | ||
2441 | /* | |
2442 | * atl1_exit_module - Driver Exit Cleanup Routine | |
2443 | * | |
2444 | * atl1_exit_module is called just before the driver is removed | |
2445 | * from memory. | |
2446 | */ | |
2447 | static void __exit atl1_exit_module(void) | |
2448 | { | |
2449 | pci_unregister_driver(&atl1_driver); | |
2450 | } | |
2451 | ||
2452 | /* | |
2453 | * atl1_init_module - Driver Registration Routine | |
2454 | * | |
2455 | * atl1_init_module is the first routine called when the driver is | |
2456 | * loaded. All it does is register with the PCI subsystem. | |
2457 | */ | |
2458 | static int __init atl1_init_module(void) | |
2459 | { | |
2460 | printk(KERN_INFO "%s - version %s\n", atl1_driver_string, DRIVER_VERSION); | |
2461 | printk(KERN_INFO "%s\n", atl1_copyright); | |
2462 | return pci_register_driver(&atl1_driver); | |
2463 | } | |
2464 | ||
2465 | module_init(atl1_init_module); | |
2466 | module_exit(atl1_exit_module); |