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1da177e4 LT |
1 | /******************************************************************* |
2 | * ident "$Id: idt77252.c,v 1.2 2001/11/11 08:13:54 ecd Exp $" | |
3 | * | |
4 | * $Author: ecd $ | |
5 | * $Date: 2001/11/11 08:13:54 $ | |
6 | * | |
7 | * Copyright (c) 2000 ATecoM GmbH | |
8 | * | |
9 | * The author may be reached at ecd@atecom.com. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
19 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
22 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
23 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
26 | * | |
27 | * You should have received a copy of the GNU General Public License along | |
28 | * with this program; if not, write to the Free Software Foundation, Inc., | |
29 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
30 | * | |
31 | *******************************************************************/ | |
32 | static char const rcsid[] = | |
33 | "$Id: idt77252.c,v 1.2 2001/11/11 08:13:54 ecd Exp $"; | |
34 | ||
35 | ||
36 | #include <linux/module.h> | |
1da177e4 | 37 | #include <linux/pci.h> |
3c6b3773 | 38 | #include <linux/poison.h> |
1da177e4 LT |
39 | #include <linux/skbuff.h> |
40 | #include <linux/kernel.h> | |
41 | #include <linux/vmalloc.h> | |
42 | #include <linux/netdevice.h> | |
43 | #include <linux/atmdev.h> | |
44 | #include <linux/atm.h> | |
45 | #include <linux/delay.h> | |
46 | #include <linux/init.h> | |
47 | #include <linux/bitops.h> | |
48 | #include <linux/wait.h> | |
e1bd232b | 49 | #include <linux/jiffies.h> |
7e7a2d07 MK |
50 | #include <linux/mutex.h> |
51 | ||
1da177e4 LT |
52 | #include <asm/io.h> |
53 | #include <asm/uaccess.h> | |
54 | #include <asm/atomic.h> | |
55 | #include <asm/byteorder.h> | |
56 | ||
57 | #ifdef CONFIG_ATM_IDT77252_USE_SUNI | |
58 | #include "suni.h" | |
59 | #endif /* CONFIG_ATM_IDT77252_USE_SUNI */ | |
60 | ||
61 | ||
62 | #include "idt77252.h" | |
63 | #include "idt77252_tables.h" | |
64 | ||
65 | static unsigned int vpibits = 1; | |
66 | ||
67 | ||
44beac00 | 68 | #define ATM_IDT77252_SEND_IDLE 1 |
1da177e4 LT |
69 | |
70 | ||
71 | /* | |
72 | * Debug HACKs. | |
73 | */ | |
74 | #define DEBUG_MODULE 1 | |
75 | #undef HAVE_EEPROM /* does not work, yet. */ | |
76 | ||
77 | #ifdef CONFIG_ATM_IDT77252_DEBUG | |
78 | static unsigned long debug = DBG_GENERAL; | |
79 | #endif | |
80 | ||
81 | ||
82 | #define SAR_RX_DELAY (SAR_CFG_RXINT_NODELAY) | |
83 | ||
84 | ||
85 | /* | |
86 | * SCQ Handling. | |
87 | */ | |
88 | static struct scq_info *alloc_scq(struct idt77252_dev *, int); | |
89 | static void free_scq(struct idt77252_dev *, struct scq_info *); | |
90 | static int queue_skb(struct idt77252_dev *, struct vc_map *, | |
91 | struct sk_buff *, int oam); | |
92 | static void drain_scq(struct idt77252_dev *, struct vc_map *); | |
93 | static unsigned long get_free_scd(struct idt77252_dev *, struct vc_map *); | |
94 | static void fill_scd(struct idt77252_dev *, struct scq_info *, int); | |
95 | ||
96 | /* | |
97 | * FBQ Handling. | |
98 | */ | |
99 | static int push_rx_skb(struct idt77252_dev *, | |
100 | struct sk_buff *, int queue); | |
101 | static void recycle_rx_skb(struct idt77252_dev *, struct sk_buff *); | |
102 | static void flush_rx_pool(struct idt77252_dev *, struct rx_pool *); | |
103 | static void recycle_rx_pool_skb(struct idt77252_dev *, | |
104 | struct rx_pool *); | |
105 | static void add_rx_skb(struct idt77252_dev *, int queue, | |
106 | unsigned int size, unsigned int count); | |
107 | ||
108 | /* | |
109 | * RSQ Handling. | |
110 | */ | |
111 | static int init_rsq(struct idt77252_dev *); | |
112 | static void deinit_rsq(struct idt77252_dev *); | |
113 | static void idt77252_rx(struct idt77252_dev *); | |
114 | ||
115 | /* | |
116 | * TSQ handling. | |
117 | */ | |
118 | static int init_tsq(struct idt77252_dev *); | |
119 | static void deinit_tsq(struct idt77252_dev *); | |
120 | static void idt77252_tx(struct idt77252_dev *); | |
121 | ||
122 | ||
123 | /* | |
124 | * ATM Interface. | |
125 | */ | |
126 | static void idt77252_dev_close(struct atm_dev *dev); | |
127 | static int idt77252_open(struct atm_vcc *vcc); | |
128 | static void idt77252_close(struct atm_vcc *vcc); | |
129 | static int idt77252_send(struct atm_vcc *vcc, struct sk_buff *skb); | |
130 | static int idt77252_send_oam(struct atm_vcc *vcc, void *cell, | |
131 | int flags); | |
132 | static void idt77252_phy_put(struct atm_dev *dev, unsigned char value, | |
133 | unsigned long addr); | |
134 | static unsigned char idt77252_phy_get(struct atm_dev *dev, unsigned long addr); | |
135 | static int idt77252_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, | |
136 | int flags); | |
137 | static int idt77252_proc_read(struct atm_dev *dev, loff_t * pos, | |
138 | char *page); | |
c4028958 | 139 | static void idt77252_softint(struct work_struct *work); |
1da177e4 LT |
140 | |
141 | ||
142 | static struct atmdev_ops idt77252_ops = | |
143 | { | |
144 | .dev_close = idt77252_dev_close, | |
145 | .open = idt77252_open, | |
146 | .close = idt77252_close, | |
147 | .send = idt77252_send, | |
148 | .send_oam = idt77252_send_oam, | |
149 | .phy_put = idt77252_phy_put, | |
150 | .phy_get = idt77252_phy_get, | |
151 | .change_qos = idt77252_change_qos, | |
152 | .proc_read = idt77252_proc_read, | |
153 | .owner = THIS_MODULE | |
154 | }; | |
155 | ||
156 | static struct idt77252_dev *idt77252_chain = NULL; | |
157 | static unsigned int idt77252_sram_write_errors = 0; | |
158 | ||
159 | /*****************************************************************************/ | |
160 | /* */ | |
161 | /* I/O and Utility Bus */ | |
162 | /* */ | |
163 | /*****************************************************************************/ | |
164 | ||
165 | static void | |
166 | waitfor_idle(struct idt77252_dev *card) | |
167 | { | |
168 | u32 stat; | |
169 | ||
170 | stat = readl(SAR_REG_STAT); | |
171 | while (stat & SAR_STAT_CMDBZ) | |
172 | stat = readl(SAR_REG_STAT); | |
173 | } | |
174 | ||
175 | static u32 | |
176 | read_sram(struct idt77252_dev *card, unsigned long addr) | |
177 | { | |
178 | unsigned long flags; | |
179 | u32 value; | |
180 | ||
181 | spin_lock_irqsave(&card->cmd_lock, flags); | |
182 | writel(SAR_CMD_READ_SRAM | (addr << 2), SAR_REG_CMD); | |
183 | waitfor_idle(card); | |
184 | value = readl(SAR_REG_DR0); | |
185 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
186 | return value; | |
187 | } | |
188 | ||
189 | static void | |
190 | write_sram(struct idt77252_dev *card, unsigned long addr, u32 value) | |
191 | { | |
192 | unsigned long flags; | |
193 | ||
194 | if ((idt77252_sram_write_errors == 0) && | |
195 | (((addr > card->tst[0] + card->tst_size - 2) && | |
196 | (addr < card->tst[0] + card->tst_size)) || | |
197 | ((addr > card->tst[1] + card->tst_size - 2) && | |
198 | (addr < card->tst[1] + card->tst_size)))) { | |
199 | printk("%s: ERROR: TST JMP section at %08lx written: %08x\n", | |
200 | card->name, addr, value); | |
201 | } | |
202 | ||
203 | spin_lock_irqsave(&card->cmd_lock, flags); | |
204 | writel(value, SAR_REG_DR0); | |
205 | writel(SAR_CMD_WRITE_SRAM | (addr << 2), SAR_REG_CMD); | |
206 | waitfor_idle(card); | |
207 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
208 | } | |
209 | ||
210 | static u8 | |
211 | read_utility(void *dev, unsigned long ubus_addr) | |
212 | { | |
213 | struct idt77252_dev *card = dev; | |
214 | unsigned long flags; | |
215 | u8 value; | |
216 | ||
217 | if (!card) { | |
218 | printk("Error: No such device.\n"); | |
219 | return -1; | |
220 | } | |
221 | ||
222 | spin_lock_irqsave(&card->cmd_lock, flags); | |
223 | writel(SAR_CMD_READ_UTILITY + ubus_addr, SAR_REG_CMD); | |
224 | waitfor_idle(card); | |
225 | value = readl(SAR_REG_DR0); | |
226 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
227 | return value; | |
228 | } | |
229 | ||
230 | static void | |
231 | write_utility(void *dev, unsigned long ubus_addr, u8 value) | |
232 | { | |
233 | struct idt77252_dev *card = dev; | |
234 | unsigned long flags; | |
235 | ||
236 | if (!card) { | |
237 | printk("Error: No such device.\n"); | |
238 | return; | |
239 | } | |
240 | ||
241 | spin_lock_irqsave(&card->cmd_lock, flags); | |
242 | writel((u32) value, SAR_REG_DR0); | |
243 | writel(SAR_CMD_WRITE_UTILITY + ubus_addr, SAR_REG_CMD); | |
244 | waitfor_idle(card); | |
245 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
246 | } | |
247 | ||
248 | #ifdef HAVE_EEPROM | |
249 | static u32 rdsrtab[] = | |
250 | { | |
251 | SAR_GP_EECS | SAR_GP_EESCLK, | |
252 | 0, | |
253 | SAR_GP_EESCLK, /* 0 */ | |
254 | 0, | |
255 | SAR_GP_EESCLK, /* 0 */ | |
256 | 0, | |
257 | SAR_GP_EESCLK, /* 0 */ | |
258 | 0, | |
259 | SAR_GP_EESCLK, /* 0 */ | |
260 | 0, | |
261 | SAR_GP_EESCLK, /* 0 */ | |
262 | SAR_GP_EEDO, | |
263 | SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ | |
264 | 0, | |
265 | SAR_GP_EESCLK, /* 0 */ | |
266 | SAR_GP_EEDO, | |
267 | SAR_GP_EESCLK | SAR_GP_EEDO /* 1 */ | |
268 | }; | |
269 | ||
270 | static u32 wrentab[] = | |
271 | { | |
272 | SAR_GP_EECS | SAR_GP_EESCLK, | |
273 | 0, | |
274 | SAR_GP_EESCLK, /* 0 */ | |
275 | 0, | |
276 | SAR_GP_EESCLK, /* 0 */ | |
277 | 0, | |
278 | SAR_GP_EESCLK, /* 0 */ | |
279 | 0, | |
280 | SAR_GP_EESCLK, /* 0 */ | |
281 | SAR_GP_EEDO, | |
282 | SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ | |
283 | SAR_GP_EEDO, | |
284 | SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ | |
285 | 0, | |
286 | SAR_GP_EESCLK, /* 0 */ | |
287 | 0, | |
288 | SAR_GP_EESCLK /* 0 */ | |
289 | }; | |
290 | ||
291 | static u32 rdtab[] = | |
292 | { | |
293 | SAR_GP_EECS | SAR_GP_EESCLK, | |
294 | 0, | |
295 | SAR_GP_EESCLK, /* 0 */ | |
296 | 0, | |
297 | SAR_GP_EESCLK, /* 0 */ | |
298 | 0, | |
299 | SAR_GP_EESCLK, /* 0 */ | |
300 | 0, | |
301 | SAR_GP_EESCLK, /* 0 */ | |
302 | 0, | |
303 | SAR_GP_EESCLK, /* 0 */ | |
304 | 0, | |
305 | SAR_GP_EESCLK, /* 0 */ | |
306 | SAR_GP_EEDO, | |
307 | SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ | |
308 | SAR_GP_EEDO, | |
309 | SAR_GP_EESCLK | SAR_GP_EEDO /* 1 */ | |
310 | }; | |
311 | ||
312 | static u32 wrtab[] = | |
313 | { | |
314 | SAR_GP_EECS | SAR_GP_EESCLK, | |
315 | 0, | |
316 | SAR_GP_EESCLK, /* 0 */ | |
317 | 0, | |
318 | SAR_GP_EESCLK, /* 0 */ | |
319 | 0, | |
320 | SAR_GP_EESCLK, /* 0 */ | |
321 | 0, | |
322 | SAR_GP_EESCLK, /* 0 */ | |
323 | 0, | |
324 | SAR_GP_EESCLK, /* 0 */ | |
325 | 0, | |
326 | SAR_GP_EESCLK, /* 0 */ | |
327 | SAR_GP_EEDO, | |
328 | SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ | |
329 | 0, | |
330 | SAR_GP_EESCLK /* 0 */ | |
331 | }; | |
332 | ||
333 | static u32 clktab[] = | |
334 | { | |
335 | 0, | |
336 | SAR_GP_EESCLK, | |
337 | 0, | |
338 | SAR_GP_EESCLK, | |
339 | 0, | |
340 | SAR_GP_EESCLK, | |
341 | 0, | |
342 | SAR_GP_EESCLK, | |
343 | 0, | |
344 | SAR_GP_EESCLK, | |
345 | 0, | |
346 | SAR_GP_EESCLK, | |
347 | 0, | |
348 | SAR_GP_EESCLK, | |
349 | 0, | |
350 | SAR_GP_EESCLK, | |
351 | 0 | |
352 | }; | |
353 | ||
354 | static u32 | |
355 | idt77252_read_gp(struct idt77252_dev *card) | |
356 | { | |
357 | u32 gp; | |
358 | ||
359 | gp = readl(SAR_REG_GP); | |
360 | #if 0 | |
361 | printk("RD: %s\n", gp & SAR_GP_EEDI ? "1" : "0"); | |
362 | #endif | |
363 | return gp; | |
364 | } | |
365 | ||
366 | static void | |
367 | idt77252_write_gp(struct idt77252_dev *card, u32 value) | |
368 | { | |
369 | unsigned long flags; | |
370 | ||
371 | #if 0 | |
372 | printk("WR: %s %s %s\n", value & SAR_GP_EECS ? " " : "/CS", | |
373 | value & SAR_GP_EESCLK ? "HIGH" : "LOW ", | |
374 | value & SAR_GP_EEDO ? "1" : "0"); | |
375 | #endif | |
376 | ||
377 | spin_lock_irqsave(&card->cmd_lock, flags); | |
378 | waitfor_idle(card); | |
379 | writel(value, SAR_REG_GP); | |
380 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
381 | } | |
382 | ||
383 | static u8 | |
384 | idt77252_eeprom_read_status(struct idt77252_dev *card) | |
385 | { | |
386 | u8 byte; | |
387 | u32 gp; | |
388 | int i, j; | |
389 | ||
390 | gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO); | |
391 | ||
36fe55d6 | 392 | for (i = 0; i < ARRAY_SIZE(rdsrtab); i++) { |
1da177e4 LT |
393 | idt77252_write_gp(card, gp | rdsrtab[i]); |
394 | udelay(5); | |
395 | } | |
396 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
397 | udelay(5); | |
398 | ||
399 | byte = 0; | |
400 | for (i = 0, j = 0; i < 8; i++) { | |
401 | byte <<= 1; | |
402 | ||
403 | idt77252_write_gp(card, gp | clktab[j++]); | |
404 | udelay(5); | |
405 | ||
406 | byte |= idt77252_read_gp(card) & SAR_GP_EEDI ? 1 : 0; | |
407 | ||
408 | idt77252_write_gp(card, gp | clktab[j++]); | |
409 | udelay(5); | |
410 | } | |
411 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
412 | udelay(5); | |
413 | ||
414 | return byte; | |
415 | } | |
416 | ||
417 | static u8 | |
418 | idt77252_eeprom_read_byte(struct idt77252_dev *card, u8 offset) | |
419 | { | |
420 | u8 byte; | |
421 | u32 gp; | |
422 | int i, j; | |
423 | ||
424 | gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO); | |
425 | ||
36fe55d6 | 426 | for (i = 0; i < ARRAY_SIZE(rdtab); i++) { |
1da177e4 LT |
427 | idt77252_write_gp(card, gp | rdtab[i]); |
428 | udelay(5); | |
429 | } | |
430 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
431 | udelay(5); | |
432 | ||
433 | for (i = 0, j = 0; i < 8; i++) { | |
434 | idt77252_write_gp(card, gp | clktab[j++] | | |
435 | (offset & 1 ? SAR_GP_EEDO : 0)); | |
436 | udelay(5); | |
437 | ||
438 | idt77252_write_gp(card, gp | clktab[j++] | | |
439 | (offset & 1 ? SAR_GP_EEDO : 0)); | |
440 | udelay(5); | |
441 | ||
442 | offset >>= 1; | |
443 | } | |
444 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
445 | udelay(5); | |
446 | ||
447 | byte = 0; | |
448 | for (i = 0, j = 0; i < 8; i++) { | |
449 | byte <<= 1; | |
450 | ||
451 | idt77252_write_gp(card, gp | clktab[j++]); | |
452 | udelay(5); | |
453 | ||
454 | byte |= idt77252_read_gp(card) & SAR_GP_EEDI ? 1 : 0; | |
455 | ||
456 | idt77252_write_gp(card, gp | clktab[j++]); | |
457 | udelay(5); | |
458 | } | |
459 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
460 | udelay(5); | |
461 | ||
462 | return byte; | |
463 | } | |
464 | ||
465 | static void | |
466 | idt77252_eeprom_write_byte(struct idt77252_dev *card, u8 offset, u8 data) | |
467 | { | |
468 | u32 gp; | |
469 | int i, j; | |
470 | ||
471 | gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO); | |
472 | ||
36fe55d6 | 473 | for (i = 0; i < ARRAY_SIZE(wrentab); i++) { |
1da177e4 LT |
474 | idt77252_write_gp(card, gp | wrentab[i]); |
475 | udelay(5); | |
476 | } | |
477 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
478 | udelay(5); | |
479 | ||
36fe55d6 | 480 | for (i = 0; i < ARRAY_SIZE(wrtab); i++) { |
1da177e4 LT |
481 | idt77252_write_gp(card, gp | wrtab[i]); |
482 | udelay(5); | |
483 | } | |
484 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
485 | udelay(5); | |
486 | ||
487 | for (i = 0, j = 0; i < 8; i++) { | |
488 | idt77252_write_gp(card, gp | clktab[j++] | | |
489 | (offset & 1 ? SAR_GP_EEDO : 0)); | |
490 | udelay(5); | |
491 | ||
492 | idt77252_write_gp(card, gp | clktab[j++] | | |
493 | (offset & 1 ? SAR_GP_EEDO : 0)); | |
494 | udelay(5); | |
495 | ||
496 | offset >>= 1; | |
497 | } | |
498 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
499 | udelay(5); | |
500 | ||
501 | for (i = 0, j = 0; i < 8; i++) { | |
502 | idt77252_write_gp(card, gp | clktab[j++] | | |
503 | (data & 1 ? SAR_GP_EEDO : 0)); | |
504 | udelay(5); | |
505 | ||
506 | idt77252_write_gp(card, gp | clktab[j++] | | |
507 | (data & 1 ? SAR_GP_EEDO : 0)); | |
508 | udelay(5); | |
509 | ||
510 | data >>= 1; | |
511 | } | |
512 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
513 | udelay(5); | |
514 | } | |
515 | ||
516 | static void | |
517 | idt77252_eeprom_init(struct idt77252_dev *card) | |
518 | { | |
519 | u32 gp; | |
520 | ||
521 | gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO); | |
522 | ||
523 | idt77252_write_gp(card, gp | SAR_GP_EECS | SAR_GP_EESCLK); | |
524 | udelay(5); | |
525 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
526 | udelay(5); | |
527 | idt77252_write_gp(card, gp | SAR_GP_EECS | SAR_GP_EESCLK); | |
528 | udelay(5); | |
529 | idt77252_write_gp(card, gp | SAR_GP_EECS); | |
530 | udelay(5); | |
531 | } | |
532 | #endif /* HAVE_EEPROM */ | |
533 | ||
534 | ||
535 | #ifdef CONFIG_ATM_IDT77252_DEBUG | |
536 | static void | |
537 | dump_tct(struct idt77252_dev *card, int index) | |
538 | { | |
539 | unsigned long tct; | |
540 | int i; | |
541 | ||
542 | tct = (unsigned long) (card->tct_base + index * SAR_SRAM_TCT_SIZE); | |
543 | ||
544 | printk("%s: TCT %x:", card->name, index); | |
545 | for (i = 0; i < 8; i++) { | |
546 | printk(" %08x", read_sram(card, tct + i)); | |
547 | } | |
548 | printk("\n"); | |
549 | } | |
550 | ||
551 | static void | |
552 | idt77252_tx_dump(struct idt77252_dev *card) | |
553 | { | |
554 | struct atm_vcc *vcc; | |
555 | struct vc_map *vc; | |
556 | int i; | |
557 | ||
558 | printk("%s\n", __FUNCTION__); | |
559 | for (i = 0; i < card->tct_size; i++) { | |
560 | vc = card->vcs[i]; | |
561 | if (!vc) | |
562 | continue; | |
563 | ||
564 | vcc = NULL; | |
565 | if (vc->rx_vcc) | |
566 | vcc = vc->rx_vcc; | |
567 | else if (vc->tx_vcc) | |
568 | vcc = vc->tx_vcc; | |
569 | ||
570 | if (!vcc) | |
571 | continue; | |
572 | ||
573 | printk("%s: Connection %d:\n", card->name, vc->index); | |
574 | dump_tct(card, vc->index); | |
575 | } | |
576 | } | |
577 | #endif | |
578 | ||
579 | ||
580 | /*****************************************************************************/ | |
581 | /* */ | |
582 | /* SCQ Handling */ | |
583 | /* */ | |
584 | /*****************************************************************************/ | |
585 | ||
586 | static int | |
587 | sb_pool_add(struct idt77252_dev *card, struct sk_buff *skb, int queue) | |
588 | { | |
589 | struct sb_pool *pool = &card->sbpool[queue]; | |
590 | int index; | |
591 | ||
592 | index = pool->index; | |
593 | while (pool->skb[index]) { | |
594 | index = (index + 1) & FBQ_MASK; | |
595 | if (index == pool->index) | |
596 | return -ENOBUFS; | |
597 | } | |
598 | ||
599 | pool->skb[index] = skb; | |
600 | IDT77252_PRV_POOL(skb) = POOL_HANDLE(queue, index); | |
601 | ||
602 | pool->index = (index + 1) & FBQ_MASK; | |
603 | return 0; | |
604 | } | |
605 | ||
606 | static void | |
607 | sb_pool_remove(struct idt77252_dev *card, struct sk_buff *skb) | |
608 | { | |
609 | unsigned int queue, index; | |
610 | u32 handle; | |
611 | ||
612 | handle = IDT77252_PRV_POOL(skb); | |
613 | ||
614 | queue = POOL_QUEUE(handle); | |
615 | if (queue > 3) | |
616 | return; | |
617 | ||
618 | index = POOL_INDEX(handle); | |
619 | if (index > FBQ_SIZE - 1) | |
620 | return; | |
621 | ||
622 | card->sbpool[queue].skb[index] = NULL; | |
623 | } | |
624 | ||
625 | static struct sk_buff * | |
626 | sb_pool_skb(struct idt77252_dev *card, u32 handle) | |
627 | { | |
628 | unsigned int queue, index; | |
629 | ||
630 | queue = POOL_QUEUE(handle); | |
631 | if (queue > 3) | |
632 | return NULL; | |
633 | ||
634 | index = POOL_INDEX(handle); | |
635 | if (index > FBQ_SIZE - 1) | |
636 | return NULL; | |
637 | ||
638 | return card->sbpool[queue].skb[index]; | |
639 | } | |
640 | ||
641 | static struct scq_info * | |
642 | alloc_scq(struct idt77252_dev *card, int class) | |
643 | { | |
644 | struct scq_info *scq; | |
645 | ||
0c1cca1d | 646 | scq = kzalloc(sizeof(struct scq_info), GFP_KERNEL); |
1da177e4 LT |
647 | if (!scq) |
648 | return NULL; | |
1da177e4 LT |
649 | scq->base = pci_alloc_consistent(card->pcidev, SCQ_SIZE, |
650 | &scq->paddr); | |
651 | if (scq->base == NULL) { | |
652 | kfree(scq); | |
653 | return NULL; | |
654 | } | |
655 | memset(scq->base, 0, SCQ_SIZE); | |
656 | ||
657 | scq->next = scq->base; | |
658 | scq->last = scq->base + (SCQ_ENTRIES - 1); | |
659 | atomic_set(&scq->used, 0); | |
660 | ||
661 | spin_lock_init(&scq->lock); | |
662 | spin_lock_init(&scq->skblock); | |
663 | ||
664 | skb_queue_head_init(&scq->transmit); | |
665 | skb_queue_head_init(&scq->pending); | |
666 | ||
667 | TXPRINTK("idt77252: SCQ: base 0x%p, next 0x%p, last 0x%p, paddr %08llx\n", | |
668 | scq->base, scq->next, scq->last, (unsigned long long)scq->paddr); | |
669 | ||
670 | return scq; | |
671 | } | |
672 | ||
673 | static void | |
674 | free_scq(struct idt77252_dev *card, struct scq_info *scq) | |
675 | { | |
676 | struct sk_buff *skb; | |
677 | struct atm_vcc *vcc; | |
678 | ||
679 | pci_free_consistent(card->pcidev, SCQ_SIZE, | |
680 | scq->base, scq->paddr); | |
681 | ||
682 | while ((skb = skb_dequeue(&scq->transmit))) { | |
683 | pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb), | |
684 | skb->len, PCI_DMA_TODEVICE); | |
685 | ||
686 | vcc = ATM_SKB(skb)->vcc; | |
687 | if (vcc->pop) | |
688 | vcc->pop(vcc, skb); | |
689 | else | |
690 | dev_kfree_skb(skb); | |
691 | } | |
692 | ||
693 | while ((skb = skb_dequeue(&scq->pending))) { | |
694 | pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb), | |
695 | skb->len, PCI_DMA_TODEVICE); | |
696 | ||
697 | vcc = ATM_SKB(skb)->vcc; | |
698 | if (vcc->pop) | |
699 | vcc->pop(vcc, skb); | |
700 | else | |
701 | dev_kfree_skb(skb); | |
702 | } | |
703 | ||
704 | kfree(scq); | |
705 | } | |
706 | ||
707 | ||
708 | static int | |
709 | push_on_scq(struct idt77252_dev *card, struct vc_map *vc, struct sk_buff *skb) | |
710 | { | |
711 | struct scq_info *scq = vc->scq; | |
712 | unsigned long flags; | |
713 | struct scqe *tbd; | |
714 | int entries; | |
715 | ||
716 | TXPRINTK("%s: SCQ: next 0x%p\n", card->name, scq->next); | |
717 | ||
718 | atomic_inc(&scq->used); | |
719 | entries = atomic_read(&scq->used); | |
720 | if (entries > (SCQ_ENTRIES - 1)) { | |
721 | atomic_dec(&scq->used); | |
722 | goto out; | |
723 | } | |
724 | ||
725 | skb_queue_tail(&scq->transmit, skb); | |
726 | ||
727 | spin_lock_irqsave(&vc->lock, flags); | |
728 | if (vc->estimator) { | |
729 | struct atm_vcc *vcc = vc->tx_vcc; | |
730 | struct sock *sk = sk_atm(vcc); | |
731 | ||
732 | vc->estimator->cells += (skb->len + 47) / 48; | |
733 | if (atomic_read(&sk->sk_wmem_alloc) > | |
734 | (sk->sk_sndbuf >> 1)) { | |
735 | u32 cps = vc->estimator->maxcps; | |
736 | ||
737 | vc->estimator->cps = cps; | |
738 | vc->estimator->avcps = cps << 5; | |
739 | if (vc->lacr < vc->init_er) { | |
740 | vc->lacr = vc->init_er; | |
741 | writel(TCMDQ_LACR | (vc->lacr << 16) | | |
742 | vc->index, SAR_REG_TCMDQ); | |
743 | } | |
744 | } | |
745 | } | |
746 | spin_unlock_irqrestore(&vc->lock, flags); | |
747 | ||
748 | tbd = &IDT77252_PRV_TBD(skb); | |
749 | ||
750 | spin_lock_irqsave(&scq->lock, flags); | |
751 | scq->next->word_1 = cpu_to_le32(tbd->word_1 | | |
752 | SAR_TBD_TSIF | SAR_TBD_GTSI); | |
753 | scq->next->word_2 = cpu_to_le32(tbd->word_2); | |
754 | scq->next->word_3 = cpu_to_le32(tbd->word_3); | |
755 | scq->next->word_4 = cpu_to_le32(tbd->word_4); | |
756 | ||
757 | if (scq->next == scq->last) | |
758 | scq->next = scq->base; | |
759 | else | |
760 | scq->next++; | |
761 | ||
762 | write_sram(card, scq->scd, | |
763 | scq->paddr + | |
764 | (u32)((unsigned long)scq->next - (unsigned long)scq->base)); | |
765 | spin_unlock_irqrestore(&scq->lock, flags); | |
766 | ||
767 | scq->trans_start = jiffies; | |
768 | ||
769 | if (test_and_clear_bit(VCF_IDLE, &vc->flags)) { | |
770 | writel(TCMDQ_START_LACR | (vc->lacr << 16) | vc->index, | |
771 | SAR_REG_TCMDQ); | |
772 | } | |
773 | ||
774 | TXPRINTK("%d entries in SCQ used (push).\n", atomic_read(&scq->used)); | |
775 | ||
776 | XPRINTK("%s: SCQ (after push %2d) head = 0x%x, next = 0x%p.\n", | |
777 | card->name, atomic_read(&scq->used), | |
778 | read_sram(card, scq->scd + 1), scq->next); | |
779 | ||
780 | return 0; | |
781 | ||
782 | out: | |
e1bd232b | 783 | if (time_after(jiffies, scq->trans_start + HZ)) { |
1da177e4 LT |
784 | printk("%s: Error pushing TBD for %d.%d\n", |
785 | card->name, vc->tx_vcc->vpi, vc->tx_vcc->vci); | |
786 | #ifdef CONFIG_ATM_IDT77252_DEBUG | |
787 | idt77252_tx_dump(card); | |
788 | #endif | |
789 | scq->trans_start = jiffies; | |
790 | } | |
791 | ||
792 | return -ENOBUFS; | |
793 | } | |
794 | ||
795 | ||
796 | static void | |
797 | drain_scq(struct idt77252_dev *card, struct vc_map *vc) | |
798 | { | |
799 | struct scq_info *scq = vc->scq; | |
800 | struct sk_buff *skb; | |
801 | struct atm_vcc *vcc; | |
802 | ||
803 | TXPRINTK("%s: SCQ (before drain %2d) next = 0x%p.\n", | |
804 | card->name, atomic_read(&scq->used), scq->next); | |
805 | ||
806 | skb = skb_dequeue(&scq->transmit); | |
807 | if (skb) { | |
808 | TXPRINTK("%s: freeing skb at %p.\n", card->name, skb); | |
809 | ||
810 | pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb), | |
811 | skb->len, PCI_DMA_TODEVICE); | |
812 | ||
813 | vcc = ATM_SKB(skb)->vcc; | |
814 | ||
815 | if (vcc->pop) | |
816 | vcc->pop(vcc, skb); | |
817 | else | |
818 | dev_kfree_skb(skb); | |
819 | ||
820 | atomic_inc(&vcc->stats->tx); | |
821 | } | |
822 | ||
823 | atomic_dec(&scq->used); | |
824 | ||
825 | spin_lock(&scq->skblock); | |
826 | while ((skb = skb_dequeue(&scq->pending))) { | |
827 | if (push_on_scq(card, vc, skb)) { | |
828 | skb_queue_head(&vc->scq->pending, skb); | |
829 | break; | |
830 | } | |
831 | } | |
832 | spin_unlock(&scq->skblock); | |
833 | } | |
834 | ||
835 | static int | |
836 | queue_skb(struct idt77252_dev *card, struct vc_map *vc, | |
837 | struct sk_buff *skb, int oam) | |
838 | { | |
839 | struct atm_vcc *vcc; | |
840 | struct scqe *tbd; | |
841 | unsigned long flags; | |
842 | int error; | |
843 | int aal; | |
844 | ||
845 | if (skb->len == 0) { | |
846 | printk("%s: invalid skb->len (%d)\n", card->name, skb->len); | |
847 | return -EINVAL; | |
848 | } | |
849 | ||
850 | TXPRINTK("%s: Sending %d bytes of data.\n", | |
851 | card->name, skb->len); | |
852 | ||
853 | tbd = &IDT77252_PRV_TBD(skb); | |
854 | vcc = ATM_SKB(skb)->vcc; | |
855 | ||
856 | IDT77252_PRV_PADDR(skb) = pci_map_single(card->pcidev, skb->data, | |
857 | skb->len, PCI_DMA_TODEVICE); | |
858 | ||
859 | error = -EINVAL; | |
860 | ||
861 | if (oam) { | |
862 | if (skb->len != 52) | |
863 | goto errout; | |
864 | ||
865 | tbd->word_1 = SAR_TBD_OAM | ATM_CELL_PAYLOAD | SAR_TBD_EPDU; | |
866 | tbd->word_2 = IDT77252_PRV_PADDR(skb) + 4; | |
867 | tbd->word_3 = 0x00000000; | |
868 | tbd->word_4 = (skb->data[0] << 24) | (skb->data[1] << 16) | | |
869 | (skb->data[2] << 8) | (skb->data[3] << 0); | |
870 | ||
871 | if (test_bit(VCF_RSV, &vc->flags)) | |
872 | vc = card->vcs[0]; | |
873 | ||
874 | goto done; | |
875 | } | |
876 | ||
877 | if (test_bit(VCF_RSV, &vc->flags)) { | |
878 | printk("%s: Trying to transmit on reserved VC\n", card->name); | |
879 | goto errout; | |
880 | } | |
881 | ||
882 | aal = vcc->qos.aal; | |
883 | ||
884 | switch (aal) { | |
885 | case ATM_AAL0: | |
886 | case ATM_AAL34: | |
887 | if (skb->len > 52) | |
888 | goto errout; | |
889 | ||
890 | if (aal == ATM_AAL0) | |
891 | tbd->word_1 = SAR_TBD_EPDU | SAR_TBD_AAL0 | | |
892 | ATM_CELL_PAYLOAD; | |
893 | else | |
894 | tbd->word_1 = SAR_TBD_EPDU | SAR_TBD_AAL34 | | |
895 | ATM_CELL_PAYLOAD; | |
896 | ||
897 | tbd->word_2 = IDT77252_PRV_PADDR(skb) + 4; | |
898 | tbd->word_3 = 0x00000000; | |
899 | tbd->word_4 = (skb->data[0] << 24) | (skb->data[1] << 16) | | |
900 | (skb->data[2] << 8) | (skb->data[3] << 0); | |
901 | break; | |
902 | ||
903 | case ATM_AAL5: | |
904 | tbd->word_1 = SAR_TBD_EPDU | SAR_TBD_AAL5 | skb->len; | |
905 | tbd->word_2 = IDT77252_PRV_PADDR(skb); | |
906 | tbd->word_3 = skb->len; | |
907 | tbd->word_4 = (vcc->vpi << SAR_TBD_VPI_SHIFT) | | |
908 | (vcc->vci << SAR_TBD_VCI_SHIFT); | |
909 | break; | |
910 | ||
911 | case ATM_AAL1: | |
912 | case ATM_AAL2: | |
913 | default: | |
914 | printk("%s: Traffic type not supported.\n", card->name); | |
915 | error = -EPROTONOSUPPORT; | |
916 | goto errout; | |
917 | } | |
918 | ||
919 | done: | |
920 | spin_lock_irqsave(&vc->scq->skblock, flags); | |
921 | skb_queue_tail(&vc->scq->pending, skb); | |
922 | ||
923 | while ((skb = skb_dequeue(&vc->scq->pending))) { | |
924 | if (push_on_scq(card, vc, skb)) { | |
925 | skb_queue_head(&vc->scq->pending, skb); | |
926 | break; | |
927 | } | |
928 | } | |
929 | spin_unlock_irqrestore(&vc->scq->skblock, flags); | |
930 | ||
931 | return 0; | |
932 | ||
933 | errout: | |
934 | pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb), | |
935 | skb->len, PCI_DMA_TODEVICE); | |
936 | return error; | |
937 | } | |
938 | ||
939 | static unsigned long | |
940 | get_free_scd(struct idt77252_dev *card, struct vc_map *vc) | |
941 | { | |
942 | int i; | |
943 | ||
944 | for (i = 0; i < card->scd_size; i++) { | |
945 | if (!card->scd2vc[i]) { | |
946 | card->scd2vc[i] = vc; | |
947 | vc->scd_index = i; | |
948 | return card->scd_base + i * SAR_SRAM_SCD_SIZE; | |
949 | } | |
950 | } | |
951 | return 0; | |
952 | } | |
953 | ||
954 | static void | |
955 | fill_scd(struct idt77252_dev *card, struct scq_info *scq, int class) | |
956 | { | |
957 | write_sram(card, scq->scd, scq->paddr); | |
958 | write_sram(card, scq->scd + 1, 0x00000000); | |
959 | write_sram(card, scq->scd + 2, 0xffffffff); | |
960 | write_sram(card, scq->scd + 3, 0x00000000); | |
961 | } | |
962 | ||
963 | static void | |
964 | clear_scd(struct idt77252_dev *card, struct scq_info *scq, int class) | |
965 | { | |
966 | return; | |
967 | } | |
968 | ||
969 | /*****************************************************************************/ | |
970 | /* */ | |
971 | /* RSQ Handling */ | |
972 | /* */ | |
973 | /*****************************************************************************/ | |
974 | ||
975 | static int | |
976 | init_rsq(struct idt77252_dev *card) | |
977 | { | |
978 | struct rsq_entry *rsqe; | |
979 | ||
980 | card->rsq.base = pci_alloc_consistent(card->pcidev, RSQSIZE, | |
981 | &card->rsq.paddr); | |
982 | if (card->rsq.base == NULL) { | |
983 | printk("%s: can't allocate RSQ.\n", card->name); | |
984 | return -1; | |
985 | } | |
986 | memset(card->rsq.base, 0, RSQSIZE); | |
987 | ||
988 | card->rsq.last = card->rsq.base + RSQ_NUM_ENTRIES - 1; | |
989 | card->rsq.next = card->rsq.last; | |
990 | for (rsqe = card->rsq.base; rsqe <= card->rsq.last; rsqe++) | |
991 | rsqe->word_4 = 0; | |
992 | ||
993 | writel((unsigned long) card->rsq.last - (unsigned long) card->rsq.base, | |
994 | SAR_REG_RSQH); | |
995 | writel(card->rsq.paddr, SAR_REG_RSQB); | |
996 | ||
997 | IPRINTK("%s: RSQ base at 0x%lx (0x%x).\n", card->name, | |
998 | (unsigned long) card->rsq.base, | |
999 | readl(SAR_REG_RSQB)); | |
1000 | IPRINTK("%s: RSQ head = 0x%x, base = 0x%x, tail = 0x%x.\n", | |
1001 | card->name, | |
1002 | readl(SAR_REG_RSQH), | |
1003 | readl(SAR_REG_RSQB), | |
1004 | readl(SAR_REG_RSQT)); | |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | static void | |
1010 | deinit_rsq(struct idt77252_dev *card) | |
1011 | { | |
1012 | pci_free_consistent(card->pcidev, RSQSIZE, | |
1013 | card->rsq.base, card->rsq.paddr); | |
1014 | } | |
1015 | ||
1016 | static void | |
1017 | dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) | |
1018 | { | |
1019 | struct atm_vcc *vcc; | |
1020 | struct sk_buff *skb; | |
1021 | struct rx_pool *rpp; | |
1022 | struct vc_map *vc; | |
1023 | u32 header, vpi, vci; | |
1024 | u32 stat; | |
1025 | int i; | |
1026 | ||
1027 | stat = le32_to_cpu(rsqe->word_4); | |
1028 | ||
1029 | if (stat & SAR_RSQE_IDLE) { | |
1030 | RXPRINTK("%s: message about inactive connection.\n", | |
1031 | card->name); | |
1032 | return; | |
1033 | } | |
1034 | ||
1035 | skb = sb_pool_skb(card, le32_to_cpu(rsqe->word_2)); | |
1036 | if (skb == NULL) { | |
1037 | printk("%s: NULL skb in %s, rsqe: %08x %08x %08x %08x\n", | |
1038 | card->name, __FUNCTION__, | |
1039 | le32_to_cpu(rsqe->word_1), le32_to_cpu(rsqe->word_2), | |
1040 | le32_to_cpu(rsqe->word_3), le32_to_cpu(rsqe->word_4)); | |
1041 | return; | |
1042 | } | |
1043 | ||
1044 | header = le32_to_cpu(rsqe->word_1); | |
1045 | vpi = (header >> 16) & 0x00ff; | |
1046 | vci = (header >> 0) & 0xffff; | |
1047 | ||
1048 | RXPRINTK("%s: SDU for %d.%d received in buffer 0x%p (data 0x%p).\n", | |
1049 | card->name, vpi, vci, skb, skb->data); | |
1050 | ||
1051 | if ((vpi >= (1 << card->vpibits)) || (vci != (vci & card->vcimask))) { | |
1052 | printk("%s: SDU received for out-of-range vc %u.%u\n", | |
1053 | card->name, vpi, vci); | |
1054 | recycle_rx_skb(card, skb); | |
1055 | return; | |
1056 | } | |
1057 | ||
1058 | vc = card->vcs[VPCI2VC(card, vpi, vci)]; | |
1059 | if (!vc || !test_bit(VCF_RX, &vc->flags)) { | |
1060 | printk("%s: SDU received on non RX vc %u.%u\n", | |
1061 | card->name, vpi, vci); | |
1062 | recycle_rx_skb(card, skb); | |
1063 | return; | |
1064 | } | |
1065 | ||
1066 | vcc = vc->rx_vcc; | |
1067 | ||
1068 | pci_dma_sync_single_for_cpu(card->pcidev, IDT77252_PRV_PADDR(skb), | |
4305b541 ACM |
1069 | skb_end_pointer(skb) - skb->data, |
1070 | PCI_DMA_FROMDEVICE); | |
1da177e4 LT |
1071 | |
1072 | if ((vcc->qos.aal == ATM_AAL0) || | |
1073 | (vcc->qos.aal == ATM_AAL34)) { | |
1074 | struct sk_buff *sb; | |
1075 | unsigned char *cell; | |
1076 | u32 aal0; | |
1077 | ||
1078 | cell = skb->data; | |
1079 | for (i = (stat & SAR_RSQE_CELLCNT); i; i--) { | |
1080 | if ((sb = dev_alloc_skb(64)) == NULL) { | |
1081 | printk("%s: Can't allocate buffers for aal0.\n", | |
1082 | card->name); | |
1083 | atomic_add(i, &vcc->stats->rx_drop); | |
1084 | break; | |
1085 | } | |
1086 | if (!atm_charge(vcc, sb->truesize)) { | |
1087 | RXPRINTK("%s: atm_charge() dropped aal0 packets.\n", | |
1088 | card->name); | |
1089 | atomic_add(i - 1, &vcc->stats->rx_drop); | |
1090 | dev_kfree_skb(sb); | |
1091 | break; | |
1092 | } | |
1093 | aal0 = (vpi << ATM_HDR_VPI_SHIFT) | | |
1094 | (vci << ATM_HDR_VCI_SHIFT); | |
1095 | aal0 |= (stat & SAR_RSQE_EPDU) ? 0x00000002 : 0; | |
1096 | aal0 |= (stat & SAR_RSQE_CLP) ? 0x00000001 : 0; | |
1097 | ||
1098 | *((u32 *) sb->data) = aal0; | |
1099 | skb_put(sb, sizeof(u32)); | |
1100 | memcpy(skb_put(sb, ATM_CELL_PAYLOAD), | |
1101 | cell, ATM_CELL_PAYLOAD); | |
1102 | ||
1103 | ATM_SKB(sb)->vcc = vcc; | |
a61bbcf2 | 1104 | __net_timestamp(sb); |
1da177e4 LT |
1105 | vcc->push(vcc, sb); |
1106 | atomic_inc(&vcc->stats->rx); | |
1107 | ||
1108 | cell += ATM_CELL_PAYLOAD; | |
1109 | } | |
1110 | ||
1111 | recycle_rx_skb(card, skb); | |
1112 | return; | |
1113 | } | |
1114 | if (vcc->qos.aal != ATM_AAL5) { | |
1115 | printk("%s: Unexpected AAL type in dequeue_rx(): %d.\n", | |
1116 | card->name, vcc->qos.aal); | |
1117 | recycle_rx_skb(card, skb); | |
1118 | return; | |
1119 | } | |
1120 | skb->len = (stat & SAR_RSQE_CELLCNT) * ATM_CELL_PAYLOAD; | |
1121 | ||
1122 | rpp = &vc->rcv.rx_pool; | |
1123 | ||
1124 | rpp->len += skb->len; | |
1125 | if (!rpp->count++) | |
1126 | rpp->first = skb; | |
1127 | *rpp->last = skb; | |
1128 | rpp->last = &skb->next; | |
1129 | ||
1130 | if (stat & SAR_RSQE_EPDU) { | |
1131 | unsigned char *l1l2; | |
1132 | unsigned int len; | |
1133 | ||
1134 | l1l2 = (unsigned char *) ((unsigned long) skb->data + skb->len - 6); | |
1135 | ||
1136 | len = (l1l2[0] << 8) | l1l2[1]; | |
1137 | len = len ? len : 0x10000; | |
1138 | ||
1139 | RXPRINTK("%s: PDU has %d bytes.\n", card->name, len); | |
1140 | ||
1141 | if ((len + 8 > rpp->len) || (len + (47 + 8) < rpp->len)) { | |
1142 | RXPRINTK("%s: AAL5 PDU size mismatch: %d != %d. " | |
1143 | "(CDC: %08x)\n", | |
1144 | card->name, len, rpp->len, readl(SAR_REG_CDC)); | |
1145 | recycle_rx_pool_skb(card, rpp); | |
1146 | atomic_inc(&vcc->stats->rx_err); | |
1147 | return; | |
1148 | } | |
1149 | if (stat & SAR_RSQE_CRC) { | |
1150 | RXPRINTK("%s: AAL5 CRC error.\n", card->name); | |
1151 | recycle_rx_pool_skb(card, rpp); | |
1152 | atomic_inc(&vcc->stats->rx_err); | |
1153 | return; | |
1154 | } | |
1155 | if (rpp->count > 1) { | |
1156 | struct sk_buff *sb; | |
1157 | ||
1158 | skb = dev_alloc_skb(rpp->len); | |
1159 | if (!skb) { | |
1160 | RXPRINTK("%s: Can't alloc RX skb.\n", | |
1161 | card->name); | |
1162 | recycle_rx_pool_skb(card, rpp); | |
1163 | atomic_inc(&vcc->stats->rx_err); | |
1164 | return; | |
1165 | } | |
1166 | if (!atm_charge(vcc, skb->truesize)) { | |
1167 | recycle_rx_pool_skb(card, rpp); | |
1168 | dev_kfree_skb(skb); | |
1169 | return; | |
1170 | } | |
1171 | sb = rpp->first; | |
1172 | for (i = 0; i < rpp->count; i++) { | |
1173 | memcpy(skb_put(skb, sb->len), | |
1174 | sb->data, sb->len); | |
1175 | sb = sb->next; | |
1176 | } | |
1177 | ||
1178 | recycle_rx_pool_skb(card, rpp); | |
1179 | ||
1180 | skb_trim(skb, len); | |
1181 | ATM_SKB(skb)->vcc = vcc; | |
a61bbcf2 | 1182 | __net_timestamp(skb); |
1da177e4 LT |
1183 | |
1184 | vcc->push(vcc, skb); | |
1185 | atomic_inc(&vcc->stats->rx); | |
1186 | ||
1187 | return; | |
1188 | } | |
1189 | ||
1190 | skb->next = NULL; | |
1191 | flush_rx_pool(card, rpp); | |
1192 | ||
1193 | if (!atm_charge(vcc, skb->truesize)) { | |
1194 | recycle_rx_skb(card, skb); | |
1195 | return; | |
1196 | } | |
1197 | ||
1198 | pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb), | |
4305b541 ACM |
1199 | skb_end_pointer(skb) - skb->data, |
1200 | PCI_DMA_FROMDEVICE); | |
1da177e4 LT |
1201 | sb_pool_remove(card, skb); |
1202 | ||
1203 | skb_trim(skb, len); | |
1204 | ATM_SKB(skb)->vcc = vcc; | |
a61bbcf2 | 1205 | __net_timestamp(skb); |
1da177e4 LT |
1206 | |
1207 | vcc->push(vcc, skb); | |
1208 | atomic_inc(&vcc->stats->rx); | |
1209 | ||
1210 | if (skb->truesize > SAR_FB_SIZE_3) | |
1211 | add_rx_skb(card, 3, SAR_FB_SIZE_3, 1); | |
1212 | else if (skb->truesize > SAR_FB_SIZE_2) | |
1213 | add_rx_skb(card, 2, SAR_FB_SIZE_2, 1); | |
1214 | else if (skb->truesize > SAR_FB_SIZE_1) | |
1215 | add_rx_skb(card, 1, SAR_FB_SIZE_1, 1); | |
1216 | else | |
1217 | add_rx_skb(card, 0, SAR_FB_SIZE_0, 1); | |
1218 | return; | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | static void | |
1223 | idt77252_rx(struct idt77252_dev *card) | |
1224 | { | |
1225 | struct rsq_entry *rsqe; | |
1226 | ||
1227 | if (card->rsq.next == card->rsq.last) | |
1228 | rsqe = card->rsq.base; | |
1229 | else | |
1230 | rsqe = card->rsq.next + 1; | |
1231 | ||
1232 | if (!(le32_to_cpu(rsqe->word_4) & SAR_RSQE_VALID)) { | |
1233 | RXPRINTK("%s: no entry in RSQ.\n", card->name); | |
1234 | return; | |
1235 | } | |
1236 | ||
1237 | do { | |
1238 | dequeue_rx(card, rsqe); | |
1239 | rsqe->word_4 = 0; | |
1240 | card->rsq.next = rsqe; | |
1241 | if (card->rsq.next == card->rsq.last) | |
1242 | rsqe = card->rsq.base; | |
1243 | else | |
1244 | rsqe = card->rsq.next + 1; | |
1245 | } while (le32_to_cpu(rsqe->word_4) & SAR_RSQE_VALID); | |
1246 | ||
1247 | writel((unsigned long) card->rsq.next - (unsigned long) card->rsq.base, | |
1248 | SAR_REG_RSQH); | |
1249 | } | |
1250 | ||
1251 | static void | |
1252 | idt77252_rx_raw(struct idt77252_dev *card) | |
1253 | { | |
1254 | struct sk_buff *queue; | |
1255 | u32 head, tail; | |
1256 | struct atm_vcc *vcc; | |
1257 | struct vc_map *vc; | |
1258 | struct sk_buff *sb; | |
1259 | ||
1260 | if (card->raw_cell_head == NULL) { | |
1261 | u32 handle = le32_to_cpu(*(card->raw_cell_hnd + 1)); | |
1262 | card->raw_cell_head = sb_pool_skb(card, handle); | |
1263 | } | |
1264 | ||
1265 | queue = card->raw_cell_head; | |
1266 | if (!queue) | |
1267 | return; | |
1268 | ||
1269 | head = IDT77252_PRV_PADDR(queue) + (queue->data - queue->head - 16); | |
1270 | tail = readl(SAR_REG_RAWCT); | |
1271 | ||
1272 | pci_dma_sync_single_for_cpu(card->pcidev, IDT77252_PRV_PADDR(queue), | |
4305b541 | 1273 | skb_end_pointer(queue) - queue->head - 16, |
1da177e4 LT |
1274 | PCI_DMA_FROMDEVICE); |
1275 | ||
1276 | while (head != tail) { | |
1277 | unsigned int vpi, vci, pti; | |
1278 | u32 header; | |
1279 | ||
1280 | header = le32_to_cpu(*(u32 *) &queue->data[0]); | |
1281 | ||
1282 | vpi = (header & ATM_HDR_VPI_MASK) >> ATM_HDR_VPI_SHIFT; | |
1283 | vci = (header & ATM_HDR_VCI_MASK) >> ATM_HDR_VCI_SHIFT; | |
1284 | pti = (header & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT; | |
1285 | ||
1286 | #ifdef CONFIG_ATM_IDT77252_DEBUG | |
1287 | if (debug & DBG_RAW_CELL) { | |
1288 | int i; | |
1289 | ||
1290 | printk("%s: raw cell %x.%02x.%04x.%x.%x\n", | |
1291 | card->name, (header >> 28) & 0x000f, | |
1292 | (header >> 20) & 0x00ff, | |
1293 | (header >> 4) & 0xffff, | |
1294 | (header >> 1) & 0x0007, | |
1295 | (header >> 0) & 0x0001); | |
1296 | for (i = 16; i < 64; i++) | |
1297 | printk(" %02x", queue->data[i]); | |
1298 | printk("\n"); | |
1299 | } | |
1300 | #endif | |
1301 | ||
1302 | if (vpi >= (1<<card->vpibits) || vci >= (1<<card->vcibits)) { | |
1303 | RPRINTK("%s: SDU received for out-of-range vc %u.%u\n", | |
1304 | card->name, vpi, vci); | |
1305 | goto drop; | |
1306 | } | |
1307 | ||
1308 | vc = card->vcs[VPCI2VC(card, vpi, vci)]; | |
1309 | if (!vc || !test_bit(VCF_RX, &vc->flags)) { | |
1310 | RPRINTK("%s: SDU received on non RX vc %u.%u\n", | |
1311 | card->name, vpi, vci); | |
1312 | goto drop; | |
1313 | } | |
1314 | ||
1315 | vcc = vc->rx_vcc; | |
1316 | ||
1317 | if (vcc->qos.aal != ATM_AAL0) { | |
1318 | RPRINTK("%s: raw cell for non AAL0 vc %u.%u\n", | |
1319 | card->name, vpi, vci); | |
1320 | atomic_inc(&vcc->stats->rx_drop); | |
1321 | goto drop; | |
1322 | } | |
1323 | ||
1324 | if ((sb = dev_alloc_skb(64)) == NULL) { | |
1325 | printk("%s: Can't allocate buffers for AAL0.\n", | |
1326 | card->name); | |
1327 | atomic_inc(&vcc->stats->rx_err); | |
1328 | goto drop; | |
1329 | } | |
1330 | ||
1331 | if (!atm_charge(vcc, sb->truesize)) { | |
1332 | RXPRINTK("%s: atm_charge() dropped AAL0 packets.\n", | |
1333 | card->name); | |
1334 | dev_kfree_skb(sb); | |
1335 | goto drop; | |
1336 | } | |
1337 | ||
1338 | *((u32 *) sb->data) = header; | |
1339 | skb_put(sb, sizeof(u32)); | |
1340 | memcpy(skb_put(sb, ATM_CELL_PAYLOAD), &(queue->data[16]), | |
1341 | ATM_CELL_PAYLOAD); | |
1342 | ||
1343 | ATM_SKB(sb)->vcc = vcc; | |
a61bbcf2 | 1344 | __net_timestamp(sb); |
1da177e4 LT |
1345 | vcc->push(vcc, sb); |
1346 | atomic_inc(&vcc->stats->rx); | |
1347 | ||
1348 | drop: | |
1349 | skb_pull(queue, 64); | |
1350 | ||
1351 | head = IDT77252_PRV_PADDR(queue) | |
1352 | + (queue->data - queue->head - 16); | |
1353 | ||
1354 | if (queue->len < 128) { | |
1355 | struct sk_buff *next; | |
1356 | u32 handle; | |
1357 | ||
1358 | head = le32_to_cpu(*(u32 *) &queue->data[0]); | |
1359 | handle = le32_to_cpu(*(u32 *) &queue->data[4]); | |
1360 | ||
1361 | next = sb_pool_skb(card, handle); | |
1362 | recycle_rx_skb(card, queue); | |
1363 | ||
1364 | if (next) { | |
1365 | card->raw_cell_head = next; | |
1366 | queue = card->raw_cell_head; | |
1367 | pci_dma_sync_single_for_cpu(card->pcidev, | |
1368 | IDT77252_PRV_PADDR(queue), | |
4305b541 ACM |
1369 | (skb_end_pointer(queue) - |
1370 | queue->data), | |
1da177e4 LT |
1371 | PCI_DMA_FROMDEVICE); |
1372 | } else { | |
1373 | card->raw_cell_head = NULL; | |
1374 | printk("%s: raw cell queue overrun\n", | |
1375 | card->name); | |
1376 | break; | |
1377 | } | |
1378 | } | |
1379 | } | |
1380 | } | |
1381 | ||
1382 | ||
1383 | /*****************************************************************************/ | |
1384 | /* */ | |
1385 | /* TSQ Handling */ | |
1386 | /* */ | |
1387 | /*****************************************************************************/ | |
1388 | ||
1389 | static int | |
1390 | init_tsq(struct idt77252_dev *card) | |
1391 | { | |
1392 | struct tsq_entry *tsqe; | |
1393 | ||
1394 | card->tsq.base = pci_alloc_consistent(card->pcidev, RSQSIZE, | |
1395 | &card->tsq.paddr); | |
1396 | if (card->tsq.base == NULL) { | |
1397 | printk("%s: can't allocate TSQ.\n", card->name); | |
1398 | return -1; | |
1399 | } | |
1400 | memset(card->tsq.base, 0, TSQSIZE); | |
1401 | ||
1402 | card->tsq.last = card->tsq.base + TSQ_NUM_ENTRIES - 1; | |
1403 | card->tsq.next = card->tsq.last; | |
1404 | for (tsqe = card->tsq.base; tsqe <= card->tsq.last; tsqe++) | |
1405 | tsqe->word_2 = cpu_to_le32(SAR_TSQE_INVALID); | |
1406 | ||
1407 | writel(card->tsq.paddr, SAR_REG_TSQB); | |
1408 | writel((unsigned long) card->tsq.next - (unsigned long) card->tsq.base, | |
1409 | SAR_REG_TSQH); | |
1410 | ||
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | static void | |
1415 | deinit_tsq(struct idt77252_dev *card) | |
1416 | { | |
1417 | pci_free_consistent(card->pcidev, TSQSIZE, | |
1418 | card->tsq.base, card->tsq.paddr); | |
1419 | } | |
1420 | ||
1421 | static void | |
1422 | idt77252_tx(struct idt77252_dev *card) | |
1423 | { | |
1424 | struct tsq_entry *tsqe; | |
1425 | unsigned int vpi, vci; | |
1426 | struct vc_map *vc; | |
1427 | u32 conn, stat; | |
1428 | ||
1429 | if (card->tsq.next == card->tsq.last) | |
1430 | tsqe = card->tsq.base; | |
1431 | else | |
1432 | tsqe = card->tsq.next + 1; | |
1433 | ||
1434 | TXPRINTK("idt77252_tx: tsq %p: base %p, next %p, last %p\n", tsqe, | |
1435 | card->tsq.base, card->tsq.next, card->tsq.last); | |
1436 | TXPRINTK("idt77252_tx: tsqb %08x, tsqt %08x, tsqh %08x, \n", | |
1437 | readl(SAR_REG_TSQB), | |
1438 | readl(SAR_REG_TSQT), | |
1439 | readl(SAR_REG_TSQH)); | |
1440 | ||
1441 | stat = le32_to_cpu(tsqe->word_2); | |
1442 | ||
1443 | if (stat & SAR_TSQE_INVALID) | |
1444 | return; | |
1445 | ||
1446 | do { | |
1447 | TXPRINTK("tsqe: 0x%p [0x%08x 0x%08x]\n", tsqe, | |
1448 | le32_to_cpu(tsqe->word_1), | |
1449 | le32_to_cpu(tsqe->word_2)); | |
1450 | ||
1451 | switch (stat & SAR_TSQE_TYPE) { | |
1452 | case SAR_TSQE_TYPE_TIMER: | |
1453 | TXPRINTK("%s: Timer RollOver detected.\n", card->name); | |
1454 | break; | |
1455 | ||
1456 | case SAR_TSQE_TYPE_IDLE: | |
1457 | ||
1458 | conn = le32_to_cpu(tsqe->word_1); | |
1459 | ||
1460 | if (SAR_TSQE_TAG(stat) == 0x10) { | |
1461 | #ifdef NOTDEF | |
1462 | printk("%s: Connection %d halted.\n", | |
1463 | card->name, | |
1464 | le32_to_cpu(tsqe->word_1) & 0x1fff); | |
1465 | #endif | |
1466 | break; | |
1467 | } | |
1468 | ||
1469 | vc = card->vcs[conn & 0x1fff]; | |
1470 | if (!vc) { | |
1471 | printk("%s: could not find VC from conn %d\n", | |
1472 | card->name, conn & 0x1fff); | |
1473 | break; | |
1474 | } | |
1475 | ||
1476 | printk("%s: Connection %d IDLE.\n", | |
1477 | card->name, vc->index); | |
1478 | ||
1479 | set_bit(VCF_IDLE, &vc->flags); | |
1480 | break; | |
1481 | ||
1482 | case SAR_TSQE_TYPE_TSR: | |
1483 | ||
1484 | conn = le32_to_cpu(tsqe->word_1); | |
1485 | ||
1486 | vc = card->vcs[conn & 0x1fff]; | |
1487 | if (!vc) { | |
1488 | printk("%s: no VC at index %d\n", | |
1489 | card->name, | |
1490 | le32_to_cpu(tsqe->word_1) & 0x1fff); | |
1491 | break; | |
1492 | } | |
1493 | ||
1494 | drain_scq(card, vc); | |
1495 | break; | |
1496 | ||
1497 | case SAR_TSQE_TYPE_TBD_COMP: | |
1498 | ||
1499 | conn = le32_to_cpu(tsqe->word_1); | |
1500 | ||
1501 | vpi = (conn >> SAR_TBD_VPI_SHIFT) & 0x00ff; | |
1502 | vci = (conn >> SAR_TBD_VCI_SHIFT) & 0xffff; | |
1503 | ||
1504 | if (vpi >= (1 << card->vpibits) || | |
1505 | vci >= (1 << card->vcibits)) { | |
1506 | printk("%s: TBD complete: " | |
1507 | "out of range VPI.VCI %u.%u\n", | |
1508 | card->name, vpi, vci); | |
1509 | break; | |
1510 | } | |
1511 | ||
1512 | vc = card->vcs[VPCI2VC(card, vpi, vci)]; | |
1513 | if (!vc) { | |
1514 | printk("%s: TBD complete: " | |
1515 | "no VC at VPI.VCI %u.%u\n", | |
1516 | card->name, vpi, vci); | |
1517 | break; | |
1518 | } | |
1519 | ||
1520 | drain_scq(card, vc); | |
1521 | break; | |
1522 | } | |
1523 | ||
1524 | tsqe->word_2 = cpu_to_le32(SAR_TSQE_INVALID); | |
1525 | ||
1526 | card->tsq.next = tsqe; | |
1527 | if (card->tsq.next == card->tsq.last) | |
1528 | tsqe = card->tsq.base; | |
1529 | else | |
1530 | tsqe = card->tsq.next + 1; | |
1531 | ||
1532 | TXPRINTK("tsqe: %p: base %p, next %p, last %p\n", tsqe, | |
1533 | card->tsq.base, card->tsq.next, card->tsq.last); | |
1534 | ||
1535 | stat = le32_to_cpu(tsqe->word_2); | |
1536 | ||
1537 | } while (!(stat & SAR_TSQE_INVALID)); | |
1538 | ||
1539 | writel((unsigned long)card->tsq.next - (unsigned long)card->tsq.base, | |
1540 | SAR_REG_TSQH); | |
1541 | ||
1542 | XPRINTK("idt77252_tx-after writel%d: TSQ head = 0x%x, tail = 0x%x, next = 0x%p.\n", | |
1543 | card->index, readl(SAR_REG_TSQH), | |
1544 | readl(SAR_REG_TSQT), card->tsq.next); | |
1545 | } | |
1546 | ||
1547 | ||
1548 | static void | |
1549 | tst_timer(unsigned long data) | |
1550 | { | |
1551 | struct idt77252_dev *card = (struct idt77252_dev *)data; | |
1552 | unsigned long base, idle, jump; | |
1553 | unsigned long flags; | |
1554 | u32 pc; | |
1555 | int e; | |
1556 | ||
1557 | spin_lock_irqsave(&card->tst_lock, flags); | |
1558 | ||
1559 | base = card->tst[card->tst_index]; | |
1560 | idle = card->tst[card->tst_index ^ 1]; | |
1561 | ||
1562 | if (test_bit(TST_SWITCH_WAIT, &card->tst_state)) { | |
1563 | jump = base + card->tst_size - 2; | |
1564 | ||
1565 | pc = readl(SAR_REG_NOW) >> 2; | |
1566 | if ((pc ^ idle) & ~(card->tst_size - 1)) { | |
1567 | mod_timer(&card->tst_timer, jiffies + 1); | |
1568 | goto out; | |
1569 | } | |
1570 | ||
1571 | clear_bit(TST_SWITCH_WAIT, &card->tst_state); | |
1572 | ||
1573 | card->tst_index ^= 1; | |
1574 | write_sram(card, jump, TSTE_OPC_JMP | (base << 2)); | |
1575 | ||
1576 | base = card->tst[card->tst_index]; | |
1577 | idle = card->tst[card->tst_index ^ 1]; | |
1578 | ||
1579 | for (e = 0; e < card->tst_size - 2; e++) { | |
1580 | if (card->soft_tst[e].tste & TSTE_PUSH_IDLE) { | |
1581 | write_sram(card, idle + e, | |
1582 | card->soft_tst[e].tste & TSTE_MASK); | |
1583 | card->soft_tst[e].tste &= ~(TSTE_PUSH_IDLE); | |
1584 | } | |
1585 | } | |
1586 | } | |
1587 | ||
1588 | if (test_and_clear_bit(TST_SWITCH_PENDING, &card->tst_state)) { | |
1589 | ||
1590 | for (e = 0; e < card->tst_size - 2; e++) { | |
1591 | if (card->soft_tst[e].tste & TSTE_PUSH_ACTIVE) { | |
1592 | write_sram(card, idle + e, | |
1593 | card->soft_tst[e].tste & TSTE_MASK); | |
1594 | card->soft_tst[e].tste &= ~(TSTE_PUSH_ACTIVE); | |
1595 | card->soft_tst[e].tste |= TSTE_PUSH_IDLE; | |
1596 | } | |
1597 | } | |
1598 | ||
1599 | jump = base + card->tst_size - 2; | |
1600 | ||
1601 | write_sram(card, jump, TSTE_OPC_NULL); | |
1602 | set_bit(TST_SWITCH_WAIT, &card->tst_state); | |
1603 | ||
1604 | mod_timer(&card->tst_timer, jiffies + 1); | |
1605 | } | |
1606 | ||
1607 | out: | |
1608 | spin_unlock_irqrestore(&card->tst_lock, flags); | |
1609 | } | |
1610 | ||
1611 | static int | |
1612 | __fill_tst(struct idt77252_dev *card, struct vc_map *vc, | |
1613 | int n, unsigned int opc) | |
1614 | { | |
1615 | unsigned long cl, avail; | |
1616 | unsigned long idle; | |
1617 | int e, r; | |
1618 | u32 data; | |
1619 | ||
1620 | avail = card->tst_size - 2; | |
1621 | for (e = 0; e < avail; e++) { | |
1622 | if (card->soft_tst[e].vc == NULL) | |
1623 | break; | |
1624 | } | |
1625 | if (e >= avail) { | |
1626 | printk("%s: No free TST entries found\n", card->name); | |
1627 | return -1; | |
1628 | } | |
1629 | ||
1630 | NPRINTK("%s: conn %d: first TST entry at %d.\n", | |
1631 | card->name, vc ? vc->index : -1, e); | |
1632 | ||
1633 | r = n; | |
1634 | cl = avail; | |
1635 | data = opc & TSTE_OPC_MASK; | |
1636 | if (vc && (opc != TSTE_OPC_NULL)) | |
1637 | data = opc | vc->index; | |
1638 | ||
1639 | idle = card->tst[card->tst_index ^ 1]; | |
1640 | ||
1641 | /* | |
1642 | * Fill Soft TST. | |
1643 | */ | |
1644 | while (r > 0) { | |
1645 | if ((cl >= avail) && (card->soft_tst[e].vc == NULL)) { | |
1646 | if (vc) | |
1647 | card->soft_tst[e].vc = vc; | |
1648 | else | |
1649 | card->soft_tst[e].vc = (void *)-1; | |
1650 | ||
1651 | card->soft_tst[e].tste = data; | |
1652 | if (timer_pending(&card->tst_timer)) | |
1653 | card->soft_tst[e].tste |= TSTE_PUSH_ACTIVE; | |
1654 | else { | |
1655 | write_sram(card, idle + e, data); | |
1656 | card->soft_tst[e].tste |= TSTE_PUSH_IDLE; | |
1657 | } | |
1658 | ||
1659 | cl -= card->tst_size; | |
1660 | r--; | |
1661 | } | |
1662 | ||
1663 | if (++e == avail) | |
1664 | e = 0; | |
1665 | cl += n; | |
1666 | } | |
1667 | ||
1668 | return 0; | |
1669 | } | |
1670 | ||
1671 | static int | |
1672 | fill_tst(struct idt77252_dev *card, struct vc_map *vc, int n, unsigned int opc) | |
1673 | { | |
1674 | unsigned long flags; | |
1675 | int res; | |
1676 | ||
1677 | spin_lock_irqsave(&card->tst_lock, flags); | |
1678 | ||
1679 | res = __fill_tst(card, vc, n, opc); | |
1680 | ||
1681 | set_bit(TST_SWITCH_PENDING, &card->tst_state); | |
1682 | if (!timer_pending(&card->tst_timer)) | |
1683 | mod_timer(&card->tst_timer, jiffies + 1); | |
1684 | ||
1685 | spin_unlock_irqrestore(&card->tst_lock, flags); | |
1686 | return res; | |
1687 | } | |
1688 | ||
1689 | static int | |
1690 | __clear_tst(struct idt77252_dev *card, struct vc_map *vc) | |
1691 | { | |
1692 | unsigned long idle; | |
1693 | int e; | |
1694 | ||
1695 | idle = card->tst[card->tst_index ^ 1]; | |
1696 | ||
1697 | for (e = 0; e < card->tst_size - 2; e++) { | |
1698 | if (card->soft_tst[e].vc == vc) { | |
1699 | card->soft_tst[e].vc = NULL; | |
1700 | ||
1701 | card->soft_tst[e].tste = TSTE_OPC_VAR; | |
1702 | if (timer_pending(&card->tst_timer)) | |
1703 | card->soft_tst[e].tste |= TSTE_PUSH_ACTIVE; | |
1704 | else { | |
1705 | write_sram(card, idle + e, TSTE_OPC_VAR); | |
1706 | card->soft_tst[e].tste |= TSTE_PUSH_IDLE; | |
1707 | } | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | return 0; | |
1712 | } | |
1713 | ||
1714 | static int | |
1715 | clear_tst(struct idt77252_dev *card, struct vc_map *vc) | |
1716 | { | |
1717 | unsigned long flags; | |
1718 | int res; | |
1719 | ||
1720 | spin_lock_irqsave(&card->tst_lock, flags); | |
1721 | ||
1722 | res = __clear_tst(card, vc); | |
1723 | ||
1724 | set_bit(TST_SWITCH_PENDING, &card->tst_state); | |
1725 | if (!timer_pending(&card->tst_timer)) | |
1726 | mod_timer(&card->tst_timer, jiffies + 1); | |
1727 | ||
1728 | spin_unlock_irqrestore(&card->tst_lock, flags); | |
1729 | return res; | |
1730 | } | |
1731 | ||
1732 | static int | |
1733 | change_tst(struct idt77252_dev *card, struct vc_map *vc, | |
1734 | int n, unsigned int opc) | |
1735 | { | |
1736 | unsigned long flags; | |
1737 | int res; | |
1738 | ||
1739 | spin_lock_irqsave(&card->tst_lock, flags); | |
1740 | ||
1741 | __clear_tst(card, vc); | |
1742 | res = __fill_tst(card, vc, n, opc); | |
1743 | ||
1744 | set_bit(TST_SWITCH_PENDING, &card->tst_state); | |
1745 | if (!timer_pending(&card->tst_timer)) | |
1746 | mod_timer(&card->tst_timer, jiffies + 1); | |
1747 | ||
1748 | spin_unlock_irqrestore(&card->tst_lock, flags); | |
1749 | return res; | |
1750 | } | |
1751 | ||
1752 | ||
1753 | static int | |
1754 | set_tct(struct idt77252_dev *card, struct vc_map *vc) | |
1755 | { | |
1756 | unsigned long tct; | |
1757 | ||
1758 | tct = (unsigned long) (card->tct_base + vc->index * SAR_SRAM_TCT_SIZE); | |
1759 | ||
1760 | switch (vc->class) { | |
1761 | case SCHED_CBR: | |
1762 | OPRINTK("%s: writing TCT at 0x%lx, SCD 0x%lx.\n", | |
1763 | card->name, tct, vc->scq->scd); | |
1764 | ||
1765 | write_sram(card, tct + 0, TCT_CBR | vc->scq->scd); | |
1766 | write_sram(card, tct + 1, 0); | |
1767 | write_sram(card, tct + 2, 0); | |
1768 | write_sram(card, tct + 3, 0); | |
1769 | write_sram(card, tct + 4, 0); | |
1770 | write_sram(card, tct + 5, 0); | |
1771 | write_sram(card, tct + 6, 0); | |
1772 | write_sram(card, tct + 7, 0); | |
1773 | break; | |
1774 | ||
1775 | case SCHED_UBR: | |
1776 | OPRINTK("%s: writing TCT at 0x%lx, SCD 0x%lx.\n", | |
1777 | card->name, tct, vc->scq->scd); | |
1778 | ||
1779 | write_sram(card, tct + 0, TCT_UBR | vc->scq->scd); | |
1780 | write_sram(card, tct + 1, 0); | |
1781 | write_sram(card, tct + 2, TCT_TSIF); | |
1782 | write_sram(card, tct + 3, TCT_HALT | TCT_IDLE); | |
1783 | write_sram(card, tct + 4, 0); | |
1784 | write_sram(card, tct + 5, vc->init_er); | |
1785 | write_sram(card, tct + 6, 0); | |
1786 | write_sram(card, tct + 7, TCT_FLAG_UBR); | |
1787 | break; | |
1788 | ||
1789 | case SCHED_VBR: | |
1790 | case SCHED_ABR: | |
1791 | default: | |
1792 | return -ENOSYS; | |
1793 | } | |
1794 | ||
1795 | return 0; | |
1796 | } | |
1797 | ||
1798 | /*****************************************************************************/ | |
1799 | /* */ | |
1800 | /* FBQ Handling */ | |
1801 | /* */ | |
1802 | /*****************************************************************************/ | |
1803 | ||
1804 | static __inline__ int | |
1805 | idt77252_fbq_level(struct idt77252_dev *card, int queue) | |
1806 | { | |
1807 | return (readl(SAR_REG_STAT) >> (16 + (queue << 2))) & 0x0f; | |
1808 | } | |
1809 | ||
1810 | static __inline__ int | |
1811 | idt77252_fbq_full(struct idt77252_dev *card, int queue) | |
1812 | { | |
1813 | return (readl(SAR_REG_STAT) >> (16 + (queue << 2))) == 0x0f; | |
1814 | } | |
1815 | ||
1816 | static int | |
1817 | push_rx_skb(struct idt77252_dev *card, struct sk_buff *skb, int queue) | |
1818 | { | |
1819 | unsigned long flags; | |
1820 | u32 handle; | |
1821 | u32 addr; | |
1822 | ||
27a884dc ACM |
1823 | skb->data = skb->head; |
1824 | skb_reset_tail_pointer(skb); | |
1da177e4 LT |
1825 | skb->len = 0; |
1826 | ||
1827 | skb_reserve(skb, 16); | |
1828 | ||
1829 | switch (queue) { | |
1830 | case 0: | |
1831 | skb_put(skb, SAR_FB_SIZE_0); | |
1832 | break; | |
1833 | case 1: | |
1834 | skb_put(skb, SAR_FB_SIZE_1); | |
1835 | break; | |
1836 | case 2: | |
1837 | skb_put(skb, SAR_FB_SIZE_2); | |
1838 | break; | |
1839 | case 3: | |
1840 | skb_put(skb, SAR_FB_SIZE_3); | |
1841 | break; | |
1842 | default: | |
1da177e4 LT |
1843 | return -1; |
1844 | } | |
1845 | ||
1846 | if (idt77252_fbq_full(card, queue)) | |
1847 | return -1; | |
1848 | ||
1849 | memset(&skb->data[(skb->len & ~(0x3f)) - 64], 0, 2 * sizeof(u32)); | |
1850 | ||
1851 | handle = IDT77252_PRV_POOL(skb); | |
1852 | addr = IDT77252_PRV_PADDR(skb); | |
1853 | ||
1854 | spin_lock_irqsave(&card->cmd_lock, flags); | |
1855 | writel(handle, card->fbq[queue]); | |
1856 | writel(addr, card->fbq[queue]); | |
1857 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
1858 | ||
1859 | return 0; | |
1860 | } | |
1861 | ||
1862 | static void | |
1863 | add_rx_skb(struct idt77252_dev *card, int queue, | |
1864 | unsigned int size, unsigned int count) | |
1865 | { | |
1866 | struct sk_buff *skb; | |
1867 | dma_addr_t paddr; | |
1868 | u32 handle; | |
1869 | ||
1870 | while (count--) { | |
1871 | skb = dev_alloc_skb(size); | |
1872 | if (!skb) | |
1873 | return; | |
1874 | ||
1875 | if (sb_pool_add(card, skb, queue)) { | |
1876 | printk("%s: SB POOL full\n", __FUNCTION__); | |
1877 | goto outfree; | |
1878 | } | |
1879 | ||
1880 | paddr = pci_map_single(card->pcidev, skb->data, | |
4305b541 | 1881 | skb_end_pointer(skb) - skb->data, |
1da177e4 LT |
1882 | PCI_DMA_FROMDEVICE); |
1883 | IDT77252_PRV_PADDR(skb) = paddr; | |
1884 | ||
1885 | if (push_rx_skb(card, skb, queue)) { | |
1886 | printk("%s: FB QUEUE full\n", __FUNCTION__); | |
1887 | goto outunmap; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | return; | |
1892 | ||
1893 | outunmap: | |
1894 | pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb), | |
4305b541 | 1895 | skb_end_pointer(skb) - skb->data, PCI_DMA_FROMDEVICE); |
1da177e4 LT |
1896 | |
1897 | handle = IDT77252_PRV_POOL(skb); | |
1898 | card->sbpool[POOL_QUEUE(handle)].skb[POOL_INDEX(handle)] = NULL; | |
1899 | ||
1900 | outfree: | |
1901 | dev_kfree_skb(skb); | |
1902 | } | |
1903 | ||
1904 | ||
1905 | static void | |
1906 | recycle_rx_skb(struct idt77252_dev *card, struct sk_buff *skb) | |
1907 | { | |
1908 | u32 handle = IDT77252_PRV_POOL(skb); | |
1909 | int err; | |
1910 | ||
1911 | pci_dma_sync_single_for_device(card->pcidev, IDT77252_PRV_PADDR(skb), | |
4305b541 ACM |
1912 | skb_end_pointer(skb) - skb->data, |
1913 | PCI_DMA_FROMDEVICE); | |
1da177e4 LT |
1914 | |
1915 | err = push_rx_skb(card, skb, POOL_QUEUE(handle)); | |
1916 | if (err) { | |
1917 | pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb), | |
4305b541 ACM |
1918 | skb_end_pointer(skb) - skb->data, |
1919 | PCI_DMA_FROMDEVICE); | |
1da177e4 LT |
1920 | sb_pool_remove(card, skb); |
1921 | dev_kfree_skb(skb); | |
1922 | } | |
1923 | } | |
1924 | ||
1925 | static void | |
1926 | flush_rx_pool(struct idt77252_dev *card, struct rx_pool *rpp) | |
1927 | { | |
1928 | rpp->len = 0; | |
1929 | rpp->count = 0; | |
1930 | rpp->first = NULL; | |
1931 | rpp->last = &rpp->first; | |
1932 | } | |
1933 | ||
1934 | static void | |
1935 | recycle_rx_pool_skb(struct idt77252_dev *card, struct rx_pool *rpp) | |
1936 | { | |
1937 | struct sk_buff *skb, *next; | |
1938 | int i; | |
1939 | ||
1940 | skb = rpp->first; | |
1941 | for (i = 0; i < rpp->count; i++) { | |
1942 | next = skb->next; | |
1943 | skb->next = NULL; | |
1944 | recycle_rx_skb(card, skb); | |
1945 | skb = next; | |
1946 | } | |
1947 | flush_rx_pool(card, rpp); | |
1948 | } | |
1949 | ||
1950 | /*****************************************************************************/ | |
1951 | /* */ | |
1952 | /* ATM Interface */ | |
1953 | /* */ | |
1954 | /*****************************************************************************/ | |
1955 | ||
1956 | static void | |
1957 | idt77252_phy_put(struct atm_dev *dev, unsigned char value, unsigned long addr) | |
1958 | { | |
1959 | write_utility(dev->dev_data, 0x100 + (addr & 0x1ff), value); | |
1960 | } | |
1961 | ||
1962 | static unsigned char | |
1963 | idt77252_phy_get(struct atm_dev *dev, unsigned long addr) | |
1964 | { | |
1965 | return read_utility(dev->dev_data, 0x100 + (addr & 0x1ff)); | |
1966 | } | |
1967 | ||
1968 | static inline int | |
1969 | idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam) | |
1970 | { | |
1971 | struct atm_dev *dev = vcc->dev; | |
1972 | struct idt77252_dev *card = dev->dev_data; | |
1973 | struct vc_map *vc = vcc->dev_data; | |
1974 | int err; | |
1975 | ||
1976 | if (vc == NULL) { | |
1977 | printk("%s: NULL connection in send().\n", card->name); | |
1978 | atomic_inc(&vcc->stats->tx_err); | |
1979 | dev_kfree_skb(skb); | |
1980 | return -EINVAL; | |
1981 | } | |
1982 | if (!test_bit(VCF_TX, &vc->flags)) { | |
1983 | printk("%s: Trying to transmit on a non-tx VC.\n", card->name); | |
1984 | atomic_inc(&vcc->stats->tx_err); | |
1985 | dev_kfree_skb(skb); | |
1986 | return -EINVAL; | |
1987 | } | |
1988 | ||
1989 | switch (vcc->qos.aal) { | |
1990 | case ATM_AAL0: | |
1991 | case ATM_AAL1: | |
1992 | case ATM_AAL5: | |
1993 | break; | |
1994 | default: | |
1995 | printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal); | |
1996 | atomic_inc(&vcc->stats->tx_err); | |
1997 | dev_kfree_skb(skb); | |
1998 | return -EINVAL; | |
1999 | } | |
2000 | ||
2001 | if (skb_shinfo(skb)->nr_frags != 0) { | |
2002 | printk("%s: No scatter-gather yet.\n", card->name); | |
2003 | atomic_inc(&vcc->stats->tx_err); | |
2004 | dev_kfree_skb(skb); | |
2005 | return -EINVAL; | |
2006 | } | |
2007 | ATM_SKB(skb)->vcc = vcc; | |
2008 | ||
2009 | err = queue_skb(card, vc, skb, oam); | |
2010 | if (err) { | |
2011 | atomic_inc(&vcc->stats->tx_err); | |
2012 | dev_kfree_skb(skb); | |
2013 | return err; | |
2014 | } | |
2015 | ||
2016 | return 0; | |
2017 | } | |
2018 | ||
2019 | int | |
2020 | idt77252_send(struct atm_vcc *vcc, struct sk_buff *skb) | |
2021 | { | |
2022 | return idt77252_send_skb(vcc, skb, 0); | |
2023 | } | |
2024 | ||
2025 | static int | |
2026 | idt77252_send_oam(struct atm_vcc *vcc, void *cell, int flags) | |
2027 | { | |
2028 | struct atm_dev *dev = vcc->dev; | |
2029 | struct idt77252_dev *card = dev->dev_data; | |
2030 | struct sk_buff *skb; | |
2031 | ||
2032 | skb = dev_alloc_skb(64); | |
2033 | if (!skb) { | |
2034 | printk("%s: Out of memory in send_oam().\n", card->name); | |
2035 | atomic_inc(&vcc->stats->tx_err); | |
2036 | return -ENOMEM; | |
2037 | } | |
2038 | atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); | |
2039 | ||
2040 | memcpy(skb_put(skb, 52), cell, 52); | |
2041 | ||
2042 | return idt77252_send_skb(vcc, skb, 1); | |
2043 | } | |
2044 | ||
2045 | static __inline__ unsigned int | |
2046 | idt77252_fls(unsigned int x) | |
2047 | { | |
2048 | int r = 1; | |
2049 | ||
2050 | if (x == 0) | |
2051 | return 0; | |
2052 | if (x & 0xffff0000) { | |
2053 | x >>= 16; | |
2054 | r += 16; | |
2055 | } | |
2056 | if (x & 0xff00) { | |
2057 | x >>= 8; | |
2058 | r += 8; | |
2059 | } | |
2060 | if (x & 0xf0) { | |
2061 | x >>= 4; | |
2062 | r += 4; | |
2063 | } | |
2064 | if (x & 0xc) { | |
2065 | x >>= 2; | |
2066 | r += 2; | |
2067 | } | |
2068 | if (x & 0x2) | |
2069 | r += 1; | |
2070 | return r; | |
2071 | } | |
2072 | ||
2073 | static u16 | |
2074 | idt77252_int_to_atmfp(unsigned int rate) | |
2075 | { | |
2076 | u16 m, e; | |
2077 | ||
2078 | if (rate == 0) | |
2079 | return 0; | |
2080 | e = idt77252_fls(rate) - 1; | |
2081 | if (e < 9) | |
2082 | m = (rate - (1 << e)) << (9 - e); | |
2083 | else if (e == 9) | |
2084 | m = (rate - (1 << e)); | |
2085 | else /* e > 9 */ | |
2086 | m = (rate - (1 << e)) >> (e - 9); | |
2087 | return 0x4000 | (e << 9) | m; | |
2088 | } | |
2089 | ||
2090 | static u8 | |
2091 | idt77252_rate_logindex(struct idt77252_dev *card, int pcr) | |
2092 | { | |
2093 | u16 afp; | |
2094 | ||
2095 | afp = idt77252_int_to_atmfp(pcr < 0 ? -pcr : pcr); | |
2096 | if (pcr < 0) | |
2097 | return rate_to_log[(afp >> 5) & 0x1ff]; | |
2098 | return rate_to_log[((afp >> 5) + 1) & 0x1ff]; | |
2099 | } | |
2100 | ||
2101 | static void | |
2102 | idt77252_est_timer(unsigned long data) | |
2103 | { | |
2104 | struct vc_map *vc = (struct vc_map *)data; | |
2105 | struct idt77252_dev *card = vc->card; | |
2106 | struct rate_estimator *est; | |
2107 | unsigned long flags; | |
2108 | u32 rate, cps; | |
2109 | u64 ncells; | |
2110 | u8 lacr; | |
2111 | ||
2112 | spin_lock_irqsave(&vc->lock, flags); | |
2113 | est = vc->estimator; | |
2114 | if (!est) | |
2115 | goto out; | |
2116 | ||
2117 | ncells = est->cells; | |
2118 | ||
2119 | rate = ((u32)(ncells - est->last_cells)) << (7 - est->interval); | |
2120 | est->last_cells = ncells; | |
2121 | est->avcps += ((long)rate - (long)est->avcps) >> est->ewma_log; | |
2122 | est->cps = (est->avcps + 0x1f) >> 5; | |
2123 | ||
2124 | cps = est->cps; | |
2125 | if (cps < (est->maxcps >> 4)) | |
2126 | cps = est->maxcps >> 4; | |
2127 | ||
2128 | lacr = idt77252_rate_logindex(card, cps); | |
2129 | if (lacr > vc->max_er) | |
2130 | lacr = vc->max_er; | |
2131 | ||
2132 | if (lacr != vc->lacr) { | |
2133 | vc->lacr = lacr; | |
2134 | writel(TCMDQ_LACR|(vc->lacr << 16)|vc->index, SAR_REG_TCMDQ); | |
2135 | } | |
2136 | ||
2137 | est->timer.expires = jiffies + ((HZ / 4) << est->interval); | |
2138 | add_timer(&est->timer); | |
2139 | ||
2140 | out: | |
2141 | spin_unlock_irqrestore(&vc->lock, flags); | |
2142 | } | |
2143 | ||
2144 | static struct rate_estimator * | |
2145 | idt77252_init_est(struct vc_map *vc, int pcr) | |
2146 | { | |
2147 | struct rate_estimator *est; | |
2148 | ||
0c1cca1d | 2149 | est = kzalloc(sizeof(struct rate_estimator), GFP_KERNEL); |
1da177e4 LT |
2150 | if (!est) |
2151 | return NULL; | |
1da177e4 LT |
2152 | est->maxcps = pcr < 0 ? -pcr : pcr; |
2153 | est->cps = est->maxcps; | |
2154 | est->avcps = est->cps << 5; | |
2155 | ||
2156 | est->interval = 2; /* XXX: make this configurable */ | |
2157 | est->ewma_log = 2; /* XXX: make this configurable */ | |
2158 | init_timer(&est->timer); | |
2159 | est->timer.data = (unsigned long)vc; | |
2160 | est->timer.function = idt77252_est_timer; | |
2161 | ||
2162 | est->timer.expires = jiffies + ((HZ / 4) << est->interval); | |
2163 | add_timer(&est->timer); | |
2164 | ||
2165 | return est; | |
2166 | } | |
2167 | ||
2168 | static int | |
2169 | idt77252_init_cbr(struct idt77252_dev *card, struct vc_map *vc, | |
2170 | struct atm_vcc *vcc, struct atm_qos *qos) | |
2171 | { | |
2172 | int tst_free, tst_used, tst_entries; | |
2173 | unsigned long tmpl, modl; | |
2174 | int tcr, tcra; | |
2175 | ||
2176 | if ((qos->txtp.max_pcr == 0) && | |
2177 | (qos->txtp.pcr == 0) && (qos->txtp.min_pcr == 0)) { | |
2178 | printk("%s: trying to open a CBR VC with cell rate = 0\n", | |
2179 | card->name); | |
2180 | return -EINVAL; | |
2181 | } | |
2182 | ||
2183 | tst_used = 0; | |
2184 | tst_free = card->tst_free; | |
2185 | if (test_bit(VCF_TX, &vc->flags)) | |
2186 | tst_used = vc->ntste; | |
2187 | tst_free += tst_used; | |
2188 | ||
2189 | tcr = atm_pcr_goal(&qos->txtp); | |
2190 | tcra = tcr >= 0 ? tcr : -tcr; | |
2191 | ||
2192 | TXPRINTK("%s: CBR target cell rate = %d\n", card->name, tcra); | |
2193 | ||
2194 | tmpl = (unsigned long) tcra * ((unsigned long) card->tst_size - 2); | |
2195 | modl = tmpl % (unsigned long)card->utopia_pcr; | |
2196 | ||
2197 | tst_entries = (int) (tmpl / card->utopia_pcr); | |
2198 | if (tcr > 0) { | |
2199 | if (modl > 0) | |
2200 | tst_entries++; | |
2201 | } else if (tcr == 0) { | |
2202 | tst_entries = tst_free - SAR_TST_RESERVED; | |
2203 | if (tst_entries <= 0) { | |
2204 | printk("%s: no CBR bandwidth free.\n", card->name); | |
2205 | return -ENOSR; | |
2206 | } | |
2207 | } | |
2208 | ||
2209 | if (tst_entries == 0) { | |
2210 | printk("%s: selected CBR bandwidth < granularity.\n", | |
2211 | card->name); | |
2212 | return -EINVAL; | |
2213 | } | |
2214 | ||
2215 | if (tst_entries > (tst_free - SAR_TST_RESERVED)) { | |
2216 | printk("%s: not enough CBR bandwidth free.\n", card->name); | |
2217 | return -ENOSR; | |
2218 | } | |
2219 | ||
2220 | vc->ntste = tst_entries; | |
2221 | ||
2222 | card->tst_free = tst_free - tst_entries; | |
2223 | if (test_bit(VCF_TX, &vc->flags)) { | |
2224 | if (tst_used == tst_entries) | |
2225 | return 0; | |
2226 | ||
2227 | OPRINTK("%s: modify %d -> %d entries in TST.\n", | |
2228 | card->name, tst_used, tst_entries); | |
2229 | change_tst(card, vc, tst_entries, TSTE_OPC_CBR); | |
2230 | return 0; | |
2231 | } | |
2232 | ||
2233 | OPRINTK("%s: setting %d entries in TST.\n", card->name, tst_entries); | |
2234 | fill_tst(card, vc, tst_entries, TSTE_OPC_CBR); | |
2235 | return 0; | |
2236 | } | |
2237 | ||
2238 | static int | |
2239 | idt77252_init_ubr(struct idt77252_dev *card, struct vc_map *vc, | |
2240 | struct atm_vcc *vcc, struct atm_qos *qos) | |
2241 | { | |
2242 | unsigned long flags; | |
2243 | int tcr; | |
2244 | ||
2245 | spin_lock_irqsave(&vc->lock, flags); | |
2246 | if (vc->estimator) { | |
2247 | del_timer(&vc->estimator->timer); | |
2248 | kfree(vc->estimator); | |
2249 | vc->estimator = NULL; | |
2250 | } | |
2251 | spin_unlock_irqrestore(&vc->lock, flags); | |
2252 | ||
2253 | tcr = atm_pcr_goal(&qos->txtp); | |
2254 | if (tcr == 0) | |
2255 | tcr = card->link_pcr; | |
2256 | ||
2257 | vc->estimator = idt77252_init_est(vc, tcr); | |
2258 | ||
2259 | vc->class = SCHED_UBR; | |
2260 | vc->init_er = idt77252_rate_logindex(card, tcr); | |
2261 | vc->lacr = vc->init_er; | |
2262 | if (tcr < 0) | |
2263 | vc->max_er = vc->init_er; | |
2264 | else | |
2265 | vc->max_er = 0xff; | |
2266 | ||
2267 | return 0; | |
2268 | } | |
2269 | ||
2270 | static int | |
2271 | idt77252_init_tx(struct idt77252_dev *card, struct vc_map *vc, | |
2272 | struct atm_vcc *vcc, struct atm_qos *qos) | |
2273 | { | |
2274 | int error; | |
2275 | ||
2276 | if (test_bit(VCF_TX, &vc->flags)) | |
2277 | return -EBUSY; | |
2278 | ||
2279 | switch (qos->txtp.traffic_class) { | |
2280 | case ATM_CBR: | |
2281 | vc->class = SCHED_CBR; | |
2282 | break; | |
2283 | ||
2284 | case ATM_UBR: | |
2285 | vc->class = SCHED_UBR; | |
2286 | break; | |
2287 | ||
2288 | case ATM_VBR: | |
2289 | case ATM_ABR: | |
2290 | default: | |
2291 | return -EPROTONOSUPPORT; | |
2292 | } | |
2293 | ||
2294 | vc->scq = alloc_scq(card, vc->class); | |
2295 | if (!vc->scq) { | |
2296 | printk("%s: can't get SCQ.\n", card->name); | |
2297 | return -ENOMEM; | |
2298 | } | |
2299 | ||
2300 | vc->scq->scd = get_free_scd(card, vc); | |
2301 | if (vc->scq->scd == 0) { | |
2302 | printk("%s: no SCD available.\n", card->name); | |
2303 | free_scq(card, vc->scq); | |
2304 | return -ENOMEM; | |
2305 | } | |
2306 | ||
2307 | fill_scd(card, vc->scq, vc->class); | |
2308 | ||
2309 | if (set_tct(card, vc)) { | |
2310 | printk("%s: class %d not supported.\n", | |
2311 | card->name, qos->txtp.traffic_class); | |
2312 | ||
2313 | card->scd2vc[vc->scd_index] = NULL; | |
2314 | free_scq(card, vc->scq); | |
2315 | return -EPROTONOSUPPORT; | |
2316 | } | |
2317 | ||
2318 | switch (vc->class) { | |
2319 | case SCHED_CBR: | |
2320 | error = idt77252_init_cbr(card, vc, vcc, qos); | |
2321 | if (error) { | |
2322 | card->scd2vc[vc->scd_index] = NULL; | |
2323 | free_scq(card, vc->scq); | |
2324 | return error; | |
2325 | } | |
2326 | ||
2327 | clear_bit(VCF_IDLE, &vc->flags); | |
2328 | writel(TCMDQ_START | vc->index, SAR_REG_TCMDQ); | |
2329 | break; | |
2330 | ||
2331 | case SCHED_UBR: | |
2332 | error = idt77252_init_ubr(card, vc, vcc, qos); | |
2333 | if (error) { | |
2334 | card->scd2vc[vc->scd_index] = NULL; | |
2335 | free_scq(card, vc->scq); | |
2336 | return error; | |
2337 | } | |
2338 | ||
2339 | set_bit(VCF_IDLE, &vc->flags); | |
2340 | break; | |
2341 | } | |
2342 | ||
2343 | vc->tx_vcc = vcc; | |
2344 | set_bit(VCF_TX, &vc->flags); | |
2345 | return 0; | |
2346 | } | |
2347 | ||
2348 | static int | |
2349 | idt77252_init_rx(struct idt77252_dev *card, struct vc_map *vc, | |
2350 | struct atm_vcc *vcc, struct atm_qos *qos) | |
2351 | { | |
2352 | unsigned long flags; | |
2353 | unsigned long addr; | |
2354 | u32 rcte = 0; | |
2355 | ||
2356 | if (test_bit(VCF_RX, &vc->flags)) | |
2357 | return -EBUSY; | |
2358 | ||
2359 | vc->rx_vcc = vcc; | |
2360 | set_bit(VCF_RX, &vc->flags); | |
2361 | ||
2362 | if ((vcc->vci == 3) || (vcc->vci == 4)) | |
2363 | return 0; | |
2364 | ||
2365 | flush_rx_pool(card, &vc->rcv.rx_pool); | |
2366 | ||
2367 | rcte |= SAR_RCTE_CONNECTOPEN; | |
2368 | rcte |= SAR_RCTE_RAWCELLINTEN; | |
2369 | ||
2370 | switch (qos->aal) { | |
2371 | case ATM_AAL0: | |
2372 | rcte |= SAR_RCTE_RCQ; | |
2373 | break; | |
2374 | case ATM_AAL1: | |
2375 | rcte |= SAR_RCTE_OAM; /* Let SAR drop Video */ | |
2376 | break; | |
2377 | case ATM_AAL34: | |
2378 | rcte |= SAR_RCTE_AAL34; | |
2379 | break; | |
2380 | case ATM_AAL5: | |
2381 | rcte |= SAR_RCTE_AAL5; | |
2382 | break; | |
2383 | default: | |
2384 | rcte |= SAR_RCTE_RCQ; | |
2385 | break; | |
2386 | } | |
2387 | ||
2388 | if (qos->aal != ATM_AAL5) | |
2389 | rcte |= SAR_RCTE_FBP_1; | |
2390 | else if (qos->rxtp.max_sdu > SAR_FB_SIZE_2) | |
2391 | rcte |= SAR_RCTE_FBP_3; | |
2392 | else if (qos->rxtp.max_sdu > SAR_FB_SIZE_1) | |
2393 | rcte |= SAR_RCTE_FBP_2; | |
2394 | else if (qos->rxtp.max_sdu > SAR_FB_SIZE_0) | |
2395 | rcte |= SAR_RCTE_FBP_1; | |
2396 | else | |
2397 | rcte |= SAR_RCTE_FBP_01; | |
2398 | ||
2399 | addr = card->rct_base + (vc->index << 2); | |
2400 | ||
2401 | OPRINTK("%s: writing RCT at 0x%lx\n", card->name, addr); | |
2402 | write_sram(card, addr, rcte); | |
2403 | ||
2404 | spin_lock_irqsave(&card->cmd_lock, flags); | |
2405 | writel(SAR_CMD_OPEN_CONNECTION | (addr << 2), SAR_REG_CMD); | |
2406 | waitfor_idle(card); | |
2407 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
2408 | ||
2409 | return 0; | |
2410 | } | |
2411 | ||
2412 | static int | |
2413 | idt77252_open(struct atm_vcc *vcc) | |
2414 | { | |
2415 | struct atm_dev *dev = vcc->dev; | |
2416 | struct idt77252_dev *card = dev->dev_data; | |
2417 | struct vc_map *vc; | |
2418 | unsigned int index; | |
2419 | unsigned int inuse; | |
2420 | int error; | |
2421 | int vci = vcc->vci; | |
2422 | short vpi = vcc->vpi; | |
2423 | ||
2424 | if (vpi == ATM_VPI_UNSPEC || vci == ATM_VCI_UNSPEC) | |
2425 | return 0; | |
2426 | ||
2427 | if (vpi >= (1 << card->vpibits)) { | |
2428 | printk("%s: unsupported VPI: %d\n", card->name, vpi); | |
2429 | return -EINVAL; | |
2430 | } | |
2431 | ||
2432 | if (vci >= (1 << card->vcibits)) { | |
2433 | printk("%s: unsupported VCI: %d\n", card->name, vci); | |
2434 | return -EINVAL; | |
2435 | } | |
2436 | ||
2437 | set_bit(ATM_VF_ADDR, &vcc->flags); | |
2438 | ||
7e7a2d07 | 2439 | mutex_lock(&card->mutex); |
1da177e4 LT |
2440 | |
2441 | OPRINTK("%s: opening vpi.vci: %d.%d\n", card->name, vpi, vci); | |
2442 | ||
2443 | switch (vcc->qos.aal) { | |
2444 | case ATM_AAL0: | |
2445 | case ATM_AAL1: | |
2446 | case ATM_AAL5: | |
2447 | break; | |
2448 | default: | |
2449 | printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal); | |
7e7a2d07 | 2450 | mutex_unlock(&card->mutex); |
1da177e4 LT |
2451 | return -EPROTONOSUPPORT; |
2452 | } | |
2453 | ||
2454 | index = VPCI2VC(card, vpi, vci); | |
2455 | if (!card->vcs[index]) { | |
0c1cca1d | 2456 | card->vcs[index] = kzalloc(sizeof(struct vc_map), GFP_KERNEL); |
1da177e4 LT |
2457 | if (!card->vcs[index]) { |
2458 | printk("%s: can't alloc vc in open()\n", card->name); | |
7e7a2d07 | 2459 | mutex_unlock(&card->mutex); |
1da177e4 LT |
2460 | return -ENOMEM; |
2461 | } | |
1da177e4 LT |
2462 | card->vcs[index]->card = card; |
2463 | card->vcs[index]->index = index; | |
2464 | ||
2465 | spin_lock_init(&card->vcs[index]->lock); | |
2466 | } | |
2467 | vc = card->vcs[index]; | |
2468 | ||
2469 | vcc->dev_data = vc; | |
2470 | ||
2471 | IPRINTK("%s: idt77252_open: vc = %d (%d.%d) %s/%s (max RX SDU: %u)\n", | |
2472 | card->name, vc->index, vcc->vpi, vcc->vci, | |
2473 | vcc->qos.rxtp.traffic_class != ATM_NONE ? "rx" : "--", | |
2474 | vcc->qos.txtp.traffic_class != ATM_NONE ? "tx" : "--", | |
2475 | vcc->qos.rxtp.max_sdu); | |
2476 | ||
2477 | inuse = 0; | |
2478 | if (vcc->qos.txtp.traffic_class != ATM_NONE && | |
2479 | test_bit(VCF_TX, &vc->flags)) | |
2480 | inuse = 1; | |
2481 | if (vcc->qos.rxtp.traffic_class != ATM_NONE && | |
2482 | test_bit(VCF_RX, &vc->flags)) | |
2483 | inuse += 2; | |
2484 | ||
2485 | if (inuse) { | |
2486 | printk("%s: %s vci already in use.\n", card->name, | |
2487 | inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx"); | |
7e7a2d07 | 2488 | mutex_unlock(&card->mutex); |
1da177e4 LT |
2489 | return -EADDRINUSE; |
2490 | } | |
2491 | ||
2492 | if (vcc->qos.txtp.traffic_class != ATM_NONE) { | |
2493 | error = idt77252_init_tx(card, vc, vcc, &vcc->qos); | |
2494 | if (error) { | |
7e7a2d07 | 2495 | mutex_unlock(&card->mutex); |
1da177e4 LT |
2496 | return error; |
2497 | } | |
2498 | } | |
2499 | ||
2500 | if (vcc->qos.rxtp.traffic_class != ATM_NONE) { | |
2501 | error = idt77252_init_rx(card, vc, vcc, &vcc->qos); | |
2502 | if (error) { | |
7e7a2d07 | 2503 | mutex_unlock(&card->mutex); |
1da177e4 LT |
2504 | return error; |
2505 | } | |
2506 | } | |
2507 | ||
2508 | set_bit(ATM_VF_READY, &vcc->flags); | |
2509 | ||
7e7a2d07 | 2510 | mutex_unlock(&card->mutex); |
1da177e4 LT |
2511 | return 0; |
2512 | } | |
2513 | ||
2514 | static void | |
2515 | idt77252_close(struct atm_vcc *vcc) | |
2516 | { | |
2517 | struct atm_dev *dev = vcc->dev; | |
2518 | struct idt77252_dev *card = dev->dev_data; | |
2519 | struct vc_map *vc = vcc->dev_data; | |
2520 | unsigned long flags; | |
2521 | unsigned long addr; | |
2522 | unsigned long timeout; | |
2523 | ||
7e7a2d07 | 2524 | mutex_lock(&card->mutex); |
1da177e4 LT |
2525 | |
2526 | IPRINTK("%s: idt77252_close: vc = %d (%d.%d)\n", | |
2527 | card->name, vc->index, vcc->vpi, vcc->vci); | |
2528 | ||
2529 | clear_bit(ATM_VF_READY, &vcc->flags); | |
2530 | ||
2531 | if (vcc->qos.rxtp.traffic_class != ATM_NONE) { | |
2532 | ||
2533 | spin_lock_irqsave(&vc->lock, flags); | |
2534 | clear_bit(VCF_RX, &vc->flags); | |
2535 | vc->rx_vcc = NULL; | |
2536 | spin_unlock_irqrestore(&vc->lock, flags); | |
2537 | ||
2538 | if ((vcc->vci == 3) || (vcc->vci == 4)) | |
2539 | goto done; | |
2540 | ||
2541 | addr = card->rct_base + vc->index * SAR_SRAM_RCT_SIZE; | |
2542 | ||
2543 | spin_lock_irqsave(&card->cmd_lock, flags); | |
2544 | writel(SAR_CMD_CLOSE_CONNECTION | (addr << 2), SAR_REG_CMD); | |
2545 | waitfor_idle(card); | |
2546 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
2547 | ||
2548 | if (vc->rcv.rx_pool.count) { | |
2549 | DPRINTK("%s: closing a VC with pending rx buffers.\n", | |
2550 | card->name); | |
2551 | ||
2552 | recycle_rx_pool_skb(card, &vc->rcv.rx_pool); | |
2553 | } | |
2554 | } | |
2555 | ||
2556 | done: | |
2557 | if (vcc->qos.txtp.traffic_class != ATM_NONE) { | |
2558 | ||
2559 | spin_lock_irqsave(&vc->lock, flags); | |
2560 | clear_bit(VCF_TX, &vc->flags); | |
2561 | clear_bit(VCF_IDLE, &vc->flags); | |
2562 | clear_bit(VCF_RSV, &vc->flags); | |
2563 | vc->tx_vcc = NULL; | |
2564 | ||
2565 | if (vc->estimator) { | |
2566 | del_timer(&vc->estimator->timer); | |
2567 | kfree(vc->estimator); | |
2568 | vc->estimator = NULL; | |
2569 | } | |
2570 | spin_unlock_irqrestore(&vc->lock, flags); | |
2571 | ||
2572 | timeout = 5 * 1000; | |
2573 | while (atomic_read(&vc->scq->used) > 0) { | |
2574 | timeout = msleep_interruptible(timeout); | |
2575 | if (!timeout) | |
2576 | break; | |
2577 | } | |
2578 | if (!timeout) | |
2579 | printk("%s: SCQ drain timeout: %u used\n", | |
2580 | card->name, atomic_read(&vc->scq->used)); | |
2581 | ||
2582 | writel(TCMDQ_HALT | vc->index, SAR_REG_TCMDQ); | |
2583 | clear_scd(card, vc->scq, vc->class); | |
2584 | ||
2585 | if (vc->class == SCHED_CBR) { | |
2586 | clear_tst(card, vc); | |
2587 | card->tst_free += vc->ntste; | |
2588 | vc->ntste = 0; | |
2589 | } | |
2590 | ||
2591 | card->scd2vc[vc->scd_index] = NULL; | |
2592 | free_scq(card, vc->scq); | |
2593 | } | |
2594 | ||
7e7a2d07 | 2595 | mutex_unlock(&card->mutex); |
1da177e4 LT |
2596 | } |
2597 | ||
2598 | static int | |
2599 | idt77252_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags) | |
2600 | { | |
2601 | struct atm_dev *dev = vcc->dev; | |
2602 | struct idt77252_dev *card = dev->dev_data; | |
2603 | struct vc_map *vc = vcc->dev_data; | |
2604 | int error = 0; | |
2605 | ||
7e7a2d07 | 2606 | mutex_lock(&card->mutex); |
1da177e4 LT |
2607 | |
2608 | if (qos->txtp.traffic_class != ATM_NONE) { | |
2609 | if (!test_bit(VCF_TX, &vc->flags)) { | |
2610 | error = idt77252_init_tx(card, vc, vcc, qos); | |
2611 | if (error) | |
2612 | goto out; | |
2613 | } else { | |
2614 | switch (qos->txtp.traffic_class) { | |
2615 | case ATM_CBR: | |
2616 | error = idt77252_init_cbr(card, vc, vcc, qos); | |
2617 | if (error) | |
2618 | goto out; | |
2619 | break; | |
2620 | ||
2621 | case ATM_UBR: | |
2622 | error = idt77252_init_ubr(card, vc, vcc, qos); | |
2623 | if (error) | |
2624 | goto out; | |
2625 | ||
2626 | if (!test_bit(VCF_IDLE, &vc->flags)) { | |
2627 | writel(TCMDQ_LACR | (vc->lacr << 16) | | |
2628 | vc->index, SAR_REG_TCMDQ); | |
2629 | } | |
2630 | break; | |
2631 | ||
2632 | case ATM_VBR: | |
2633 | case ATM_ABR: | |
2634 | error = -EOPNOTSUPP; | |
2635 | goto out; | |
2636 | } | |
2637 | } | |
2638 | } | |
2639 | ||
2640 | if ((qos->rxtp.traffic_class != ATM_NONE) && | |
2641 | !test_bit(VCF_RX, &vc->flags)) { | |
2642 | error = idt77252_init_rx(card, vc, vcc, qos); | |
2643 | if (error) | |
2644 | goto out; | |
2645 | } | |
2646 | ||
2647 | memcpy(&vcc->qos, qos, sizeof(struct atm_qos)); | |
2648 | ||
2649 | set_bit(ATM_VF_HASQOS, &vcc->flags); | |
2650 | ||
2651 | out: | |
7e7a2d07 | 2652 | mutex_unlock(&card->mutex); |
1da177e4 LT |
2653 | return error; |
2654 | } | |
2655 | ||
2656 | static int | |
2657 | idt77252_proc_read(struct atm_dev *dev, loff_t * pos, char *page) | |
2658 | { | |
2659 | struct idt77252_dev *card = dev->dev_data; | |
2660 | int i, left; | |
2661 | ||
2662 | left = (int) *pos; | |
2663 | if (!left--) | |
2664 | return sprintf(page, "IDT77252 Interrupts:\n"); | |
2665 | if (!left--) | |
2666 | return sprintf(page, "TSIF: %lu\n", card->irqstat[15]); | |
2667 | if (!left--) | |
2668 | return sprintf(page, "TXICP: %lu\n", card->irqstat[14]); | |
2669 | if (!left--) | |
2670 | return sprintf(page, "TSQF: %lu\n", card->irqstat[12]); | |
2671 | if (!left--) | |
2672 | return sprintf(page, "TMROF: %lu\n", card->irqstat[11]); | |
2673 | if (!left--) | |
2674 | return sprintf(page, "PHYI: %lu\n", card->irqstat[10]); | |
2675 | if (!left--) | |
2676 | return sprintf(page, "FBQ3A: %lu\n", card->irqstat[8]); | |
2677 | if (!left--) | |
2678 | return sprintf(page, "FBQ2A: %lu\n", card->irqstat[7]); | |
2679 | if (!left--) | |
2680 | return sprintf(page, "RSQF: %lu\n", card->irqstat[6]); | |
2681 | if (!left--) | |
2682 | return sprintf(page, "EPDU: %lu\n", card->irqstat[5]); | |
2683 | if (!left--) | |
2684 | return sprintf(page, "RAWCF: %lu\n", card->irqstat[4]); | |
2685 | if (!left--) | |
2686 | return sprintf(page, "FBQ1A: %lu\n", card->irqstat[3]); | |
2687 | if (!left--) | |
2688 | return sprintf(page, "FBQ0A: %lu\n", card->irqstat[2]); | |
2689 | if (!left--) | |
2690 | return sprintf(page, "RSQAF: %lu\n", card->irqstat[1]); | |
2691 | if (!left--) | |
2692 | return sprintf(page, "IDT77252 Transmit Connection Table:\n"); | |
2693 | ||
2694 | for (i = 0; i < card->tct_size; i++) { | |
2695 | unsigned long tct; | |
2696 | struct atm_vcc *vcc; | |
2697 | struct vc_map *vc; | |
2698 | char *p; | |
2699 | ||
2700 | vc = card->vcs[i]; | |
2701 | if (!vc) | |
2702 | continue; | |
2703 | ||
2704 | vcc = NULL; | |
2705 | if (vc->tx_vcc) | |
2706 | vcc = vc->tx_vcc; | |
2707 | if (!vcc) | |
2708 | continue; | |
2709 | if (left--) | |
2710 | continue; | |
2711 | ||
2712 | p = page; | |
2713 | p += sprintf(p, " %4u: %u.%u: ", i, vcc->vpi, vcc->vci); | |
2714 | tct = (unsigned long) (card->tct_base + i * SAR_SRAM_TCT_SIZE); | |
2715 | ||
2716 | for (i = 0; i < 8; i++) | |
2717 | p += sprintf(p, " %08x", read_sram(card, tct + i)); | |
2718 | p += sprintf(p, "\n"); | |
2719 | return p - page; | |
2720 | } | |
2721 | return 0; | |
2722 | } | |
2723 | ||
2724 | /*****************************************************************************/ | |
2725 | /* */ | |
2726 | /* Interrupt handler */ | |
2727 | /* */ | |
2728 | /*****************************************************************************/ | |
2729 | ||
2730 | static void | |
2731 | idt77252_collect_stat(struct idt77252_dev *card) | |
2732 | { | |
2733 | u32 cdc, vpec, icc; | |
2734 | ||
2735 | cdc = readl(SAR_REG_CDC); | |
2736 | vpec = readl(SAR_REG_VPEC); | |
2737 | icc = readl(SAR_REG_ICC); | |
2738 | ||
2739 | #ifdef NOTDEF | |
2740 | printk("%s:", card->name); | |
2741 | ||
2742 | if (cdc & 0x7f0000) { | |
2743 | char *s = ""; | |
2744 | ||
2745 | printk(" ["); | |
2746 | if (cdc & (1 << 22)) { | |
2747 | printk("%sRM ID", s); | |
2748 | s = " | "; | |
2749 | } | |
2750 | if (cdc & (1 << 21)) { | |
2751 | printk("%sCON TAB", s); | |
2752 | s = " | "; | |
2753 | } | |
2754 | if (cdc & (1 << 20)) { | |
2755 | printk("%sNO FB", s); | |
2756 | s = " | "; | |
2757 | } | |
2758 | if (cdc & (1 << 19)) { | |
2759 | printk("%sOAM CRC", s); | |
2760 | s = " | "; | |
2761 | } | |
2762 | if (cdc & (1 << 18)) { | |
2763 | printk("%sRM CRC", s); | |
2764 | s = " | "; | |
2765 | } | |
2766 | if (cdc & (1 << 17)) { | |
2767 | printk("%sRM FIFO", s); | |
2768 | s = " | "; | |
2769 | } | |
2770 | if (cdc & (1 << 16)) { | |
2771 | printk("%sRX FIFO", s); | |
2772 | s = " | "; | |
2773 | } | |
2774 | printk("]"); | |
2775 | } | |
2776 | ||
2777 | printk(" CDC %04x, VPEC %04x, ICC: %04x\n", | |
2778 | cdc & 0xffff, vpec & 0xffff, icc & 0xffff); | |
2779 | #endif | |
2780 | } | |
2781 | ||
2782 | static irqreturn_t | |
7d12e780 | 2783 | idt77252_interrupt(int irq, void *dev_id) |
1da177e4 LT |
2784 | { |
2785 | struct idt77252_dev *card = dev_id; | |
2786 | u32 stat; | |
2787 | ||
2788 | stat = readl(SAR_REG_STAT) & 0xffff; | |
2789 | if (!stat) /* no interrupt for us */ | |
2790 | return IRQ_NONE; | |
2791 | ||
2792 | if (test_and_set_bit(IDT77252_BIT_INTERRUPT, &card->flags)) { | |
2793 | printk("%s: Re-entering irq_handler()\n", card->name); | |
2794 | goto out; | |
2795 | } | |
2796 | ||
2797 | writel(stat, SAR_REG_STAT); /* reset interrupt */ | |
2798 | ||
2799 | if (stat & SAR_STAT_TSIF) { /* entry written to TSQ */ | |
2800 | INTPRINTK("%s: TSIF\n", card->name); | |
2801 | card->irqstat[15]++; | |
2802 | idt77252_tx(card); | |
2803 | } | |
2804 | if (stat & SAR_STAT_TXICP) { /* Incomplete CS-PDU has */ | |
2805 | INTPRINTK("%s: TXICP\n", card->name); | |
2806 | card->irqstat[14]++; | |
2807 | #ifdef CONFIG_ATM_IDT77252_DEBUG | |
2808 | idt77252_tx_dump(card); | |
2809 | #endif | |
2810 | } | |
2811 | if (stat & SAR_STAT_TSQF) { /* TSQ 7/8 full */ | |
2812 | INTPRINTK("%s: TSQF\n", card->name); | |
2813 | card->irqstat[12]++; | |
2814 | idt77252_tx(card); | |
2815 | } | |
2816 | if (stat & SAR_STAT_TMROF) { /* Timer overflow */ | |
2817 | INTPRINTK("%s: TMROF\n", card->name); | |
2818 | card->irqstat[11]++; | |
2819 | idt77252_collect_stat(card); | |
2820 | } | |
2821 | ||
2822 | if (stat & SAR_STAT_EPDU) { /* Got complete CS-PDU */ | |
2823 | INTPRINTK("%s: EPDU\n", card->name); | |
2824 | card->irqstat[5]++; | |
2825 | idt77252_rx(card); | |
2826 | } | |
2827 | if (stat & SAR_STAT_RSQAF) { /* RSQ is 7/8 full */ | |
2828 | INTPRINTK("%s: RSQAF\n", card->name); | |
2829 | card->irqstat[1]++; | |
2830 | idt77252_rx(card); | |
2831 | } | |
2832 | if (stat & SAR_STAT_RSQF) { /* RSQ is full */ | |
2833 | INTPRINTK("%s: RSQF\n", card->name); | |
2834 | card->irqstat[6]++; | |
2835 | idt77252_rx(card); | |
2836 | } | |
2837 | if (stat & SAR_STAT_RAWCF) { /* Raw cell received */ | |
2838 | INTPRINTK("%s: RAWCF\n", card->name); | |
2839 | card->irqstat[4]++; | |
2840 | idt77252_rx_raw(card); | |
2841 | } | |
2842 | ||
2843 | if (stat & SAR_STAT_PHYI) { /* PHY device interrupt */ | |
2844 | INTPRINTK("%s: PHYI", card->name); | |
2845 | card->irqstat[10]++; | |
2846 | if (card->atmdev->phy && card->atmdev->phy->interrupt) | |
2847 | card->atmdev->phy->interrupt(card->atmdev); | |
2848 | } | |
2849 | ||
2850 | if (stat & (SAR_STAT_FBQ0A | SAR_STAT_FBQ1A | | |
2851 | SAR_STAT_FBQ2A | SAR_STAT_FBQ3A)) { | |
2852 | ||
2853 | writel(readl(SAR_REG_CFG) & ~(SAR_CFG_FBIE), SAR_REG_CFG); | |
2854 | ||
2855 | INTPRINTK("%s: FBQA: %04x\n", card->name, stat); | |
2856 | ||
2857 | if (stat & SAR_STAT_FBQ0A) | |
2858 | card->irqstat[2]++; | |
2859 | if (stat & SAR_STAT_FBQ1A) | |
2860 | card->irqstat[3]++; | |
2861 | if (stat & SAR_STAT_FBQ2A) | |
2862 | card->irqstat[7]++; | |
2863 | if (stat & SAR_STAT_FBQ3A) | |
2864 | card->irqstat[8]++; | |
2865 | ||
2866 | schedule_work(&card->tqueue); | |
2867 | } | |
2868 | ||
2869 | out: | |
2870 | clear_bit(IDT77252_BIT_INTERRUPT, &card->flags); | |
2871 | return IRQ_HANDLED; | |
2872 | } | |
2873 | ||
2874 | static void | |
c4028958 | 2875 | idt77252_softint(struct work_struct *work) |
1da177e4 | 2876 | { |
c4028958 DH |
2877 | struct idt77252_dev *card = |
2878 | container_of(work, struct idt77252_dev, tqueue); | |
1da177e4 LT |
2879 | u32 stat; |
2880 | int done; | |
2881 | ||
2882 | for (done = 1; ; done = 1) { | |
2883 | stat = readl(SAR_REG_STAT) >> 16; | |
2884 | ||
2885 | if ((stat & 0x0f) < SAR_FBQ0_HIGH) { | |
2886 | add_rx_skb(card, 0, SAR_FB_SIZE_0, 32); | |
2887 | done = 0; | |
2888 | } | |
2889 | ||
2890 | stat >>= 4; | |
2891 | if ((stat & 0x0f) < SAR_FBQ1_HIGH) { | |
2892 | add_rx_skb(card, 1, SAR_FB_SIZE_1, 32); | |
2893 | done = 0; | |
2894 | } | |
2895 | ||
2896 | stat >>= 4; | |
2897 | if ((stat & 0x0f) < SAR_FBQ2_HIGH) { | |
2898 | add_rx_skb(card, 2, SAR_FB_SIZE_2, 32); | |
2899 | done = 0; | |
2900 | } | |
2901 | ||
2902 | stat >>= 4; | |
2903 | if ((stat & 0x0f) < SAR_FBQ3_HIGH) { | |
2904 | add_rx_skb(card, 3, SAR_FB_SIZE_3, 32); | |
2905 | done = 0; | |
2906 | } | |
2907 | ||
2908 | if (done) | |
2909 | break; | |
2910 | } | |
2911 | ||
2912 | writel(readl(SAR_REG_CFG) | SAR_CFG_FBIE, SAR_REG_CFG); | |
2913 | } | |
2914 | ||
2915 | ||
2916 | static int | |
2917 | open_card_oam(struct idt77252_dev *card) | |
2918 | { | |
2919 | unsigned long flags; | |
2920 | unsigned long addr; | |
2921 | struct vc_map *vc; | |
2922 | int vpi, vci; | |
2923 | int index; | |
2924 | u32 rcte; | |
2925 | ||
2926 | for (vpi = 0; vpi < (1 << card->vpibits); vpi++) { | |
2927 | for (vci = 3; vci < 5; vci++) { | |
2928 | index = VPCI2VC(card, vpi, vci); | |
2929 | ||
0c1cca1d | 2930 | vc = kzalloc(sizeof(struct vc_map), GFP_KERNEL); |
1da177e4 LT |
2931 | if (!vc) { |
2932 | printk("%s: can't alloc vc\n", card->name); | |
2933 | return -ENOMEM; | |
2934 | } | |
1da177e4 LT |
2935 | vc->index = index; |
2936 | card->vcs[index] = vc; | |
2937 | ||
2938 | flush_rx_pool(card, &vc->rcv.rx_pool); | |
2939 | ||
2940 | rcte = SAR_RCTE_CONNECTOPEN | | |
2941 | SAR_RCTE_RAWCELLINTEN | | |
2942 | SAR_RCTE_RCQ | | |
2943 | SAR_RCTE_FBP_1; | |
2944 | ||
2945 | addr = card->rct_base + (vc->index << 2); | |
2946 | write_sram(card, addr, rcte); | |
2947 | ||
2948 | spin_lock_irqsave(&card->cmd_lock, flags); | |
2949 | writel(SAR_CMD_OPEN_CONNECTION | (addr << 2), | |
2950 | SAR_REG_CMD); | |
2951 | waitfor_idle(card); | |
2952 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
2953 | } | |
2954 | } | |
2955 | ||
2956 | return 0; | |
2957 | } | |
2958 | ||
2959 | static void | |
2960 | close_card_oam(struct idt77252_dev *card) | |
2961 | { | |
2962 | unsigned long flags; | |
2963 | unsigned long addr; | |
2964 | struct vc_map *vc; | |
2965 | int vpi, vci; | |
2966 | int index; | |
2967 | ||
2968 | for (vpi = 0; vpi < (1 << card->vpibits); vpi++) { | |
2969 | for (vci = 3; vci < 5; vci++) { | |
2970 | index = VPCI2VC(card, vpi, vci); | |
2971 | vc = card->vcs[index]; | |
2972 | ||
2973 | addr = card->rct_base + vc->index * SAR_SRAM_RCT_SIZE; | |
2974 | ||
2975 | spin_lock_irqsave(&card->cmd_lock, flags); | |
2976 | writel(SAR_CMD_CLOSE_CONNECTION | (addr << 2), | |
2977 | SAR_REG_CMD); | |
2978 | waitfor_idle(card); | |
2979 | spin_unlock_irqrestore(&card->cmd_lock, flags); | |
2980 | ||
2981 | if (vc->rcv.rx_pool.count) { | |
2982 | DPRINTK("%s: closing a VC " | |
2983 | "with pending rx buffers.\n", | |
2984 | card->name); | |
2985 | ||
2986 | recycle_rx_pool_skb(card, &vc->rcv.rx_pool); | |
2987 | } | |
2988 | } | |
2989 | } | |
2990 | } | |
2991 | ||
2992 | static int | |
2993 | open_card_ubr0(struct idt77252_dev *card) | |
2994 | { | |
2995 | struct vc_map *vc; | |
2996 | ||
0c1cca1d | 2997 | vc = kzalloc(sizeof(struct vc_map), GFP_KERNEL); |
1da177e4 LT |
2998 | if (!vc) { |
2999 | printk("%s: can't alloc vc\n", card->name); | |
3000 | return -ENOMEM; | |
3001 | } | |
1da177e4 LT |
3002 | card->vcs[0] = vc; |
3003 | vc->class = SCHED_UBR0; | |
3004 | ||
3005 | vc->scq = alloc_scq(card, vc->class); | |
3006 | if (!vc->scq) { | |
3007 | printk("%s: can't get SCQ.\n", card->name); | |
3008 | return -ENOMEM; | |
3009 | } | |
3010 | ||
3011 | card->scd2vc[0] = vc; | |
3012 | vc->scd_index = 0; | |
3013 | vc->scq->scd = card->scd_base; | |
3014 | ||
3015 | fill_scd(card, vc->scq, vc->class); | |
3016 | ||
3017 | write_sram(card, card->tct_base + 0, TCT_UBR | card->scd_base); | |
3018 | write_sram(card, card->tct_base + 1, 0); | |
3019 | write_sram(card, card->tct_base + 2, 0); | |
3020 | write_sram(card, card->tct_base + 3, 0); | |
3021 | write_sram(card, card->tct_base + 4, 0); | |
3022 | write_sram(card, card->tct_base + 5, 0); | |
3023 | write_sram(card, card->tct_base + 6, 0); | |
3024 | write_sram(card, card->tct_base + 7, TCT_FLAG_UBR); | |
3025 | ||
3026 | clear_bit(VCF_IDLE, &vc->flags); | |
3027 | writel(TCMDQ_START | 0, SAR_REG_TCMDQ); | |
3028 | return 0; | |
3029 | } | |
3030 | ||
3031 | static int | |
3032 | idt77252_dev_open(struct idt77252_dev *card) | |
3033 | { | |
3034 | u32 conf; | |
3035 | ||
3036 | if (!test_bit(IDT77252_BIT_INIT, &card->flags)) { | |
3037 | printk("%s: SAR not yet initialized.\n", card->name); | |
3038 | return -1; | |
3039 | } | |
3040 | ||
3041 | conf = SAR_CFG_RXPTH| /* enable receive path */ | |
3042 | SAR_RX_DELAY | /* interrupt on complete PDU */ | |
3043 | SAR_CFG_RAWIE | /* interrupt enable on raw cells */ | |
3044 | SAR_CFG_RQFIE | /* interrupt on RSQ almost full */ | |
3045 | SAR_CFG_TMOIE | /* interrupt on timer overflow */ | |
3046 | SAR_CFG_FBIE | /* interrupt on low free buffers */ | |
3047 | SAR_CFG_TXEN | /* transmit operation enable */ | |
3048 | SAR_CFG_TXINT | /* interrupt on transmit status */ | |
3049 | SAR_CFG_TXUIE | /* interrupt on transmit underrun */ | |
3050 | SAR_CFG_TXSFI | /* interrupt on TSQ almost full */ | |
3051 | SAR_CFG_PHYIE /* enable PHY interrupts */ | |
3052 | ; | |
3053 | ||
3054 | #ifdef CONFIG_ATM_IDT77252_RCV_ALL | |
3055 | /* Test RAW cell receive. */ | |
3056 | conf |= SAR_CFG_VPECA; | |
3057 | #endif | |
3058 | ||
3059 | writel(readl(SAR_REG_CFG) | conf, SAR_REG_CFG); | |
3060 | ||
3061 | if (open_card_oam(card)) { | |
3062 | printk("%s: Error initializing OAM.\n", card->name); | |
3063 | return -1; | |
3064 | } | |
3065 | ||
3066 | if (open_card_ubr0(card)) { | |
3067 | printk("%s: Error initializing UBR0.\n", card->name); | |
3068 | return -1; | |
3069 | } | |
3070 | ||
3071 | IPRINTK("%s: opened IDT77252 ABR SAR.\n", card->name); | |
3072 | return 0; | |
3073 | } | |
3074 | ||
3075 | void | |
3076 | idt77252_dev_close(struct atm_dev *dev) | |
3077 | { | |
3078 | struct idt77252_dev *card = dev->dev_data; | |
3079 | u32 conf; | |
3080 | ||
3081 | close_card_oam(card); | |
3082 | ||
3083 | conf = SAR_CFG_RXPTH | /* enable receive path */ | |
3084 | SAR_RX_DELAY | /* interrupt on complete PDU */ | |
3085 | SAR_CFG_RAWIE | /* interrupt enable on raw cells */ | |
3086 | SAR_CFG_RQFIE | /* interrupt on RSQ almost full */ | |
3087 | SAR_CFG_TMOIE | /* interrupt on timer overflow */ | |
3088 | SAR_CFG_FBIE | /* interrupt on low free buffers */ | |
3089 | SAR_CFG_TXEN | /* transmit operation enable */ | |
3090 | SAR_CFG_TXINT | /* interrupt on transmit status */ | |
3091 | SAR_CFG_TXUIE | /* interrupt on xmit underrun */ | |
3092 | SAR_CFG_TXSFI /* interrupt on TSQ almost full */ | |
3093 | ; | |
3094 | ||
3095 | writel(readl(SAR_REG_CFG) & ~(conf), SAR_REG_CFG); | |
3096 | ||
3097 | DIPRINTK("%s: closed IDT77252 ABR SAR.\n", card->name); | |
3098 | } | |
3099 | ||
3100 | ||
3101 | /*****************************************************************************/ | |
3102 | /* */ | |
3103 | /* Initialisation and Deinitialization of IDT77252 */ | |
3104 | /* */ | |
3105 | /*****************************************************************************/ | |
3106 | ||
3107 | ||
3108 | static void | |
3109 | deinit_card(struct idt77252_dev *card) | |
3110 | { | |
3111 | struct sk_buff *skb; | |
3112 | int i, j; | |
3113 | ||
3114 | if (!test_bit(IDT77252_BIT_INIT, &card->flags)) { | |
3115 | printk("%s: SAR not yet initialized.\n", card->name); | |
3116 | return; | |
3117 | } | |
3118 | DIPRINTK("idt77252: deinitialize card %u\n", card->index); | |
3119 | ||
3120 | writel(0, SAR_REG_CFG); | |
3121 | ||
3122 | if (card->atmdev) | |
3123 | atm_dev_deregister(card->atmdev); | |
3124 | ||
3125 | for (i = 0; i < 4; i++) { | |
3126 | for (j = 0; j < FBQ_SIZE; j++) { | |
3127 | skb = card->sbpool[i].skb[j]; | |
3128 | if (skb) { | |
3129 | pci_unmap_single(card->pcidev, | |
3130 | IDT77252_PRV_PADDR(skb), | |
4305b541 ACM |
3131 | (skb_end_pointer(skb) - |
3132 | skb->data), | |
1da177e4 LT |
3133 | PCI_DMA_FROMDEVICE); |
3134 | card->sbpool[i].skb[j] = NULL; | |
3135 | dev_kfree_skb(skb); | |
3136 | } | |
3137 | } | |
3138 | } | |
3139 | ||
3140 | vfree(card->soft_tst); | |
3141 | ||
3142 | vfree(card->scd2vc); | |
3143 | ||
3144 | vfree(card->vcs); | |
3145 | ||
3146 | if (card->raw_cell_hnd) { | |
3147 | pci_free_consistent(card->pcidev, 2 * sizeof(u32), | |
3148 | card->raw_cell_hnd, card->raw_cell_paddr); | |
3149 | } | |
3150 | ||
3151 | if (card->rsq.base) { | |
3152 | DIPRINTK("%s: Release RSQ ...\n", card->name); | |
3153 | deinit_rsq(card); | |
3154 | } | |
3155 | ||
3156 | if (card->tsq.base) { | |
3157 | DIPRINTK("%s: Release TSQ ...\n", card->name); | |
3158 | deinit_tsq(card); | |
3159 | } | |
3160 | ||
3161 | DIPRINTK("idt77252: Release IRQ.\n"); | |
3162 | free_irq(card->pcidev->irq, card); | |
3163 | ||
3164 | for (i = 0; i < 4; i++) { | |
3165 | if (card->fbq[i]) | |
3166 | iounmap(card->fbq[i]); | |
3167 | } | |
3168 | ||
3169 | if (card->membase) | |
3170 | iounmap(card->membase); | |
3171 | ||
3172 | clear_bit(IDT77252_BIT_INIT, &card->flags); | |
3173 | DIPRINTK("%s: Card deinitialized.\n", card->name); | |
3174 | } | |
3175 | ||
3176 | ||
3177 | static int __devinit | |
3178 | init_sram(struct idt77252_dev *card) | |
3179 | { | |
3180 | int i; | |
3181 | ||
3182 | for (i = 0; i < card->sramsize; i += 4) | |
3183 | write_sram(card, (i >> 2), 0); | |
3184 | ||
3185 | /* set SRAM layout for THIS card */ | |
3186 | if (card->sramsize == (512 * 1024)) { | |
3187 | card->tct_base = SAR_SRAM_TCT_128_BASE; | |
3188 | card->tct_size = (SAR_SRAM_TCT_128_TOP - card->tct_base + 1) | |
3189 | / SAR_SRAM_TCT_SIZE; | |
3190 | card->rct_base = SAR_SRAM_RCT_128_BASE; | |
3191 | card->rct_size = (SAR_SRAM_RCT_128_TOP - card->rct_base + 1) | |
3192 | / SAR_SRAM_RCT_SIZE; | |
3193 | card->rt_base = SAR_SRAM_RT_128_BASE; | |
3194 | card->scd_base = SAR_SRAM_SCD_128_BASE; | |
3195 | card->scd_size = (SAR_SRAM_SCD_128_TOP - card->scd_base + 1) | |
3196 | / SAR_SRAM_SCD_SIZE; | |
3197 | card->tst[0] = SAR_SRAM_TST1_128_BASE; | |
3198 | card->tst[1] = SAR_SRAM_TST2_128_BASE; | |
3199 | card->tst_size = SAR_SRAM_TST1_128_TOP - card->tst[0] + 1; | |
3200 | card->abrst_base = SAR_SRAM_ABRSTD_128_BASE; | |
3201 | card->abrst_size = SAR_ABRSTD_SIZE_8K; | |
3202 | card->fifo_base = SAR_SRAM_FIFO_128_BASE; | |
3203 | card->fifo_size = SAR_RXFD_SIZE_32K; | |
3204 | } else { | |
3205 | card->tct_base = SAR_SRAM_TCT_32_BASE; | |
3206 | card->tct_size = (SAR_SRAM_TCT_32_TOP - card->tct_base + 1) | |
3207 | / SAR_SRAM_TCT_SIZE; | |
3208 | card->rct_base = SAR_SRAM_RCT_32_BASE; | |
3209 | card->rct_size = (SAR_SRAM_RCT_32_TOP - card->rct_base + 1) | |
3210 | / SAR_SRAM_RCT_SIZE; | |
3211 | card->rt_base = SAR_SRAM_RT_32_BASE; | |
3212 | card->scd_base = SAR_SRAM_SCD_32_BASE; | |
3213 | card->scd_size = (SAR_SRAM_SCD_32_TOP - card->scd_base + 1) | |
3214 | / SAR_SRAM_SCD_SIZE; | |
3215 | card->tst[0] = SAR_SRAM_TST1_32_BASE; | |
3216 | card->tst[1] = SAR_SRAM_TST2_32_BASE; | |
3217 | card->tst_size = (SAR_SRAM_TST1_32_TOP - card->tst[0] + 1); | |
3218 | card->abrst_base = SAR_SRAM_ABRSTD_32_BASE; | |
3219 | card->abrst_size = SAR_ABRSTD_SIZE_1K; | |
3220 | card->fifo_base = SAR_SRAM_FIFO_32_BASE; | |
3221 | card->fifo_size = SAR_RXFD_SIZE_4K; | |
3222 | } | |
3223 | ||
3224 | /* Initialize TCT */ | |
3225 | for (i = 0; i < card->tct_size; i++) { | |
3226 | write_sram(card, i * SAR_SRAM_TCT_SIZE + 0, 0); | |
3227 | write_sram(card, i * SAR_SRAM_TCT_SIZE + 1, 0); | |
3228 | write_sram(card, i * SAR_SRAM_TCT_SIZE + 2, 0); | |
3229 | write_sram(card, i * SAR_SRAM_TCT_SIZE + 3, 0); | |
3230 | write_sram(card, i * SAR_SRAM_TCT_SIZE + 4, 0); | |
3231 | write_sram(card, i * SAR_SRAM_TCT_SIZE + 5, 0); | |
3232 | write_sram(card, i * SAR_SRAM_TCT_SIZE + 6, 0); | |
3233 | write_sram(card, i * SAR_SRAM_TCT_SIZE + 7, 0); | |
3234 | } | |
3235 | ||
3236 | /* Initialize RCT */ | |
3237 | for (i = 0; i < card->rct_size; i++) { | |
3238 | write_sram(card, card->rct_base + i * SAR_SRAM_RCT_SIZE, | |
3239 | (u32) SAR_RCTE_RAWCELLINTEN); | |
3240 | write_sram(card, card->rct_base + i * SAR_SRAM_RCT_SIZE + 1, | |
3241 | (u32) 0); | |
3242 | write_sram(card, card->rct_base + i * SAR_SRAM_RCT_SIZE + 2, | |
3243 | (u32) 0); | |
3244 | write_sram(card, card->rct_base + i * SAR_SRAM_RCT_SIZE + 3, | |
3245 | (u32) 0xffffffff); | |
3246 | } | |
3247 | ||
3248 | writel((SAR_FBQ0_LOW << 28) | 0x00000000 | 0x00000000 | | |
3249 | (SAR_FB_SIZE_0 / 48), SAR_REG_FBQS0); | |
3250 | writel((SAR_FBQ1_LOW << 28) | 0x00000000 | 0x00000000 | | |
3251 | (SAR_FB_SIZE_1 / 48), SAR_REG_FBQS1); | |
3252 | writel((SAR_FBQ2_LOW << 28) | 0x00000000 | 0x00000000 | | |
3253 | (SAR_FB_SIZE_2 / 48), SAR_REG_FBQS2); | |
3254 | writel((SAR_FBQ3_LOW << 28) | 0x00000000 | 0x00000000 | | |
3255 | (SAR_FB_SIZE_3 / 48), SAR_REG_FBQS3); | |
3256 | ||
3257 | /* Initialize rate table */ | |
3258 | for (i = 0; i < 256; i++) { | |
3259 | write_sram(card, card->rt_base + i, log_to_rate[i]); | |
3260 | } | |
3261 | ||
3262 | for (i = 0; i < 128; i++) { | |
3263 | unsigned int tmp; | |
3264 | ||
3265 | tmp = rate_to_log[(i << 2) + 0] << 0; | |
3266 | tmp |= rate_to_log[(i << 2) + 1] << 8; | |
3267 | tmp |= rate_to_log[(i << 2) + 2] << 16; | |
3268 | tmp |= rate_to_log[(i << 2) + 3] << 24; | |
3269 | write_sram(card, card->rt_base + 256 + i, tmp); | |
3270 | } | |
3271 | ||
3272 | #if 0 /* Fill RDF and AIR tables. */ | |
3273 | for (i = 0; i < 128; i++) { | |
3274 | unsigned int tmp; | |
3275 | ||
3276 | tmp = RDF[0][(i << 1) + 0] << 16; | |
3277 | tmp |= RDF[0][(i << 1) + 1] << 0; | |
3278 | write_sram(card, card->rt_base + 512 + i, tmp); | |
3279 | } | |
3280 | ||
3281 | for (i = 0; i < 128; i++) { | |
3282 | unsigned int tmp; | |
3283 | ||
3284 | tmp = AIR[0][(i << 1) + 0] << 16; | |
3285 | tmp |= AIR[0][(i << 1) + 1] << 0; | |
3286 | write_sram(card, card->rt_base + 640 + i, tmp); | |
3287 | } | |
3288 | #endif | |
3289 | ||
3290 | IPRINTK("%s: initialize rate table ...\n", card->name); | |
3291 | writel(card->rt_base << 2, SAR_REG_RTBL); | |
3292 | ||
3293 | /* Initialize TSTs */ | |
3294 | IPRINTK("%s: initialize TST ...\n", card->name); | |
3295 | card->tst_free = card->tst_size - 2; /* last two are jumps */ | |
3296 | ||
3297 | for (i = card->tst[0]; i < card->tst[0] + card->tst_size - 2; i++) | |
3298 | write_sram(card, i, TSTE_OPC_VAR); | |
3299 | write_sram(card, i++, TSTE_OPC_JMP | (card->tst[0] << 2)); | |
3300 | idt77252_sram_write_errors = 1; | |
3301 | write_sram(card, i++, TSTE_OPC_JMP | (card->tst[1] << 2)); | |
3302 | idt77252_sram_write_errors = 0; | |
3303 | for (i = card->tst[1]; i < card->tst[1] + card->tst_size - 2; i++) | |
3304 | write_sram(card, i, TSTE_OPC_VAR); | |
3305 | write_sram(card, i++, TSTE_OPC_JMP | (card->tst[1] << 2)); | |
3306 | idt77252_sram_write_errors = 1; | |
3307 | write_sram(card, i++, TSTE_OPC_JMP | (card->tst[0] << 2)); | |
3308 | idt77252_sram_write_errors = 0; | |
3309 | ||
3310 | card->tst_index = 0; | |
3311 | writel(card->tst[0] << 2, SAR_REG_TSTB); | |
3312 | ||
3313 | /* Initialize ABRSTD and Receive FIFO */ | |
3314 | IPRINTK("%s: initialize ABRSTD ...\n", card->name); | |
3315 | writel(card->abrst_size | (card->abrst_base << 2), | |
3316 | SAR_REG_ABRSTD); | |
3317 | ||
3318 | IPRINTK("%s: initialize receive fifo ...\n", card->name); | |
3319 | writel(card->fifo_size | (card->fifo_base << 2), | |
3320 | SAR_REG_RXFD); | |
3321 | ||
3322 | IPRINTK("%s: SRAM initialization complete.\n", card->name); | |
3323 | return 0; | |
3324 | } | |
3325 | ||
3326 | static int __devinit | |
3327 | init_card(struct atm_dev *dev) | |
3328 | { | |
3329 | struct idt77252_dev *card = dev->dev_data; | |
3330 | struct pci_dev *pcidev = card->pcidev; | |
3331 | unsigned long tmpl, modl; | |
3332 | unsigned int linkrate, rsvdcr; | |
3333 | unsigned int tst_entries; | |
3334 | struct net_device *tmp; | |
3335 | char tname[10]; | |
3336 | ||
3337 | u32 size; | |
3338 | u_char pci_byte; | |
3339 | u32 conf; | |
3340 | int i, k; | |
3341 | ||
3342 | if (test_bit(IDT77252_BIT_INIT, &card->flags)) { | |
3343 | printk("Error: SAR already initialized.\n"); | |
3344 | return -1; | |
3345 | } | |
3346 | ||
3347 | /*****************************************************************/ | |
3348 | /* P C I C O N F I G U R A T I O N */ | |
3349 | /*****************************************************************/ | |
3350 | ||
3351 | /* Set PCI Retry-Timeout and TRDY timeout */ | |
3352 | IPRINTK("%s: Checking PCI retries.\n", card->name); | |
3353 | if (pci_read_config_byte(pcidev, 0x40, &pci_byte) != 0) { | |
3354 | printk("%s: can't read PCI retry timeout.\n", card->name); | |
3355 | deinit_card(card); | |
3356 | return -1; | |
3357 | } | |
3358 | if (pci_byte != 0) { | |
3359 | IPRINTK("%s: PCI retry timeout: %d, set to 0.\n", | |
3360 | card->name, pci_byte); | |
3361 | if (pci_write_config_byte(pcidev, 0x40, 0) != 0) { | |
3362 | printk("%s: can't set PCI retry timeout.\n", | |
3363 | card->name); | |
3364 | deinit_card(card); | |
3365 | return -1; | |
3366 | } | |
3367 | } | |
3368 | IPRINTK("%s: Checking PCI TRDY.\n", card->name); | |
3369 | if (pci_read_config_byte(pcidev, 0x41, &pci_byte) != 0) { | |
3370 | printk("%s: can't read PCI TRDY timeout.\n", card->name); | |
3371 | deinit_card(card); | |
3372 | return -1; | |
3373 | } | |
3374 | if (pci_byte != 0) { | |
3375 | IPRINTK("%s: PCI TRDY timeout: %d, set to 0.\n", | |
3376 | card->name, pci_byte); | |
3377 | if (pci_write_config_byte(pcidev, 0x41, 0) != 0) { | |
3378 | printk("%s: can't set PCI TRDY timeout.\n", card->name); | |
3379 | deinit_card(card); | |
3380 | return -1; | |
3381 | } | |
3382 | } | |
3383 | /* Reset Timer register */ | |
3384 | if (readl(SAR_REG_STAT) & SAR_STAT_TMROF) { | |
3385 | printk("%s: resetting timer overflow.\n", card->name); | |
3386 | writel(SAR_STAT_TMROF, SAR_REG_STAT); | |
3387 | } | |
3388 | IPRINTK("%s: Request IRQ ... ", card->name); | |
dace1453 | 3389 | if (request_irq(pcidev->irq, idt77252_interrupt, IRQF_DISABLED|IRQF_SHARED, |
1da177e4 LT |
3390 | card->name, card) != 0) { |
3391 | printk("%s: can't allocate IRQ.\n", card->name); | |
3392 | deinit_card(card); | |
3393 | return -1; | |
3394 | } | |
3395 | IPRINTK("got %d.\n", pcidev->irq); | |
3396 | ||
3397 | /*****************************************************************/ | |
3398 | /* C H E C K A N D I N I T S R A M */ | |
3399 | /*****************************************************************/ | |
3400 | ||
3401 | IPRINTK("%s: Initializing SRAM\n", card->name); | |
3402 | ||
3403 | /* preset size of connecton table, so that init_sram() knows about it */ | |
3404 | conf = SAR_CFG_TX_FIFO_SIZE_9 | /* Use maximum fifo size */ | |
3405 | SAR_CFG_RXSTQ_SIZE_8k | /* Receive Status Queue is 8k */ | |
3406 | SAR_CFG_IDLE_CLP | /* Set CLP on idle cells */ | |
44beac00 | 3407 | #ifndef ATM_IDT77252_SEND_IDLE |
1da177e4 LT |
3408 | SAR_CFG_NO_IDLE | /* Do not send idle cells */ |
3409 | #endif | |
3410 | 0; | |
3411 | ||
3412 | if (card->sramsize == (512 * 1024)) | |
3413 | conf |= SAR_CFG_CNTBL_1k; | |
3414 | else | |
3415 | conf |= SAR_CFG_CNTBL_512; | |
3416 | ||
3417 | switch (vpibits) { | |
3418 | case 0: | |
3419 | conf |= SAR_CFG_VPVCS_0; | |
3420 | break; | |
3421 | default: | |
3422 | case 1: | |
3423 | conf |= SAR_CFG_VPVCS_1; | |
3424 | break; | |
3425 | case 2: | |
3426 | conf |= SAR_CFG_VPVCS_2; | |
3427 | break; | |
3428 | case 8: | |
3429 | conf |= SAR_CFG_VPVCS_8; | |
3430 | break; | |
3431 | } | |
3432 | ||
3433 | writel(readl(SAR_REG_CFG) | conf, SAR_REG_CFG); | |
3434 | ||
3435 | if (init_sram(card) < 0) | |
3436 | return -1; | |
3437 | ||
3438 | /********************************************************************/ | |
3439 | /* A L L O C R A M A N D S E T V A R I O U S T H I N G S */ | |
3440 | /********************************************************************/ | |
3441 | /* Initialize TSQ */ | |
3442 | if (0 != init_tsq(card)) { | |
3443 | deinit_card(card); | |
3444 | return -1; | |
3445 | } | |
3446 | /* Initialize RSQ */ | |
3447 | if (0 != init_rsq(card)) { | |
3448 | deinit_card(card); | |
3449 | return -1; | |
3450 | } | |
3451 | ||
3452 | card->vpibits = vpibits; | |
3453 | if (card->sramsize == (512 * 1024)) { | |
3454 | card->vcibits = 10 - card->vpibits; | |
3455 | } else { | |
3456 | card->vcibits = 9 - card->vpibits; | |
3457 | } | |
3458 | ||
3459 | card->vcimask = 0; | |
3460 | for (k = 0, i = 1; k < card->vcibits; k++) { | |
3461 | card->vcimask |= i; | |
3462 | i <<= 1; | |
3463 | } | |
3464 | ||
3465 | IPRINTK("%s: Setting VPI/VCI mask to zero.\n", card->name); | |
3466 | writel(0, SAR_REG_VPM); | |
3467 | ||
3468 | /* Little Endian Order */ | |
3469 | writel(0, SAR_REG_GP); | |
3470 | ||
3471 | /* Initialize RAW Cell Handle Register */ | |
3472 | card->raw_cell_hnd = pci_alloc_consistent(card->pcidev, 2 * sizeof(u32), | |
3473 | &card->raw_cell_paddr); | |
3474 | if (!card->raw_cell_hnd) { | |
3475 | printk("%s: memory allocation failure.\n", card->name); | |
3476 | deinit_card(card); | |
3477 | return -1; | |
3478 | } | |
3479 | memset(card->raw_cell_hnd, 0, 2 * sizeof(u32)); | |
3480 | writel(card->raw_cell_paddr, SAR_REG_RAWHND); | |
3481 | IPRINTK("%s: raw cell handle is at 0x%p.\n", card->name, | |
3482 | card->raw_cell_hnd); | |
3483 | ||
3484 | size = sizeof(struct vc_map *) * card->tct_size; | |
3485 | IPRINTK("%s: allocate %d byte for VC map.\n", card->name, size); | |
3486 | if (NULL == (card->vcs = vmalloc(size))) { | |
3487 | printk("%s: memory allocation failure.\n", card->name); | |
3488 | deinit_card(card); | |
3489 | return -1; | |
3490 | } | |
3491 | memset(card->vcs, 0, size); | |
3492 | ||
3493 | size = sizeof(struct vc_map *) * card->scd_size; | |
3494 | IPRINTK("%s: allocate %d byte for SCD to VC mapping.\n", | |
3495 | card->name, size); | |
3496 | if (NULL == (card->scd2vc = vmalloc(size))) { | |
3497 | printk("%s: memory allocation failure.\n", card->name); | |
3498 | deinit_card(card); | |
3499 | return -1; | |
3500 | } | |
3501 | memset(card->scd2vc, 0, size); | |
3502 | ||
3503 | size = sizeof(struct tst_info) * (card->tst_size - 2); | |
3504 | IPRINTK("%s: allocate %d byte for TST to VC mapping.\n", | |
3505 | card->name, size); | |
3506 | if (NULL == (card->soft_tst = vmalloc(size))) { | |
3507 | printk("%s: memory allocation failure.\n", card->name); | |
3508 | deinit_card(card); | |
3509 | return -1; | |
3510 | } | |
3511 | for (i = 0; i < card->tst_size - 2; i++) { | |
3512 | card->soft_tst[i].tste = TSTE_OPC_VAR; | |
3513 | card->soft_tst[i].vc = NULL; | |
3514 | } | |
3515 | ||
3516 | if (dev->phy == NULL) { | |
3517 | printk("%s: No LT device defined.\n", card->name); | |
3518 | deinit_card(card); | |
3519 | return -1; | |
3520 | } | |
3521 | if (dev->phy->ioctl == NULL) { | |
3522 | printk("%s: LT had no IOCTL funtion defined.\n", card->name); | |
3523 | deinit_card(card); | |
3524 | return -1; | |
3525 | } | |
3526 | ||
3527 | #ifdef CONFIG_ATM_IDT77252_USE_SUNI | |
3528 | /* | |
3529 | * this is a jhs hack to get around special functionality in the | |
3530 | * phy driver for the atecom hardware; the functionality doesn't | |
3531 | * exist in the linux atm suni driver | |
3532 | * | |
3533 | * it isn't the right way to do things, but as the guy from NIST | |
3534 | * said, talking about their measurement of the fine structure | |
3535 | * constant, "it's good enough for government work." | |
3536 | */ | |
3537 | linkrate = 149760000; | |
3538 | #endif | |
3539 | ||
3540 | card->link_pcr = (linkrate / 8 / 53); | |
3541 | printk("%s: Linkrate on ATM line : %u bit/s, %u cell/s.\n", | |
3542 | card->name, linkrate, card->link_pcr); | |
3543 | ||
44beac00 | 3544 | #ifdef ATM_IDT77252_SEND_IDLE |
1da177e4 LT |
3545 | card->utopia_pcr = card->link_pcr; |
3546 | #else | |
3547 | card->utopia_pcr = (160000000 / 8 / 54); | |
3548 | #endif | |
3549 | ||
3550 | rsvdcr = 0; | |
3551 | if (card->utopia_pcr > card->link_pcr) | |
3552 | rsvdcr = card->utopia_pcr - card->link_pcr; | |
3553 | ||
3554 | tmpl = (unsigned long) rsvdcr * ((unsigned long) card->tst_size - 2); | |
3555 | modl = tmpl % (unsigned long)card->utopia_pcr; | |
3556 | tst_entries = (int) (tmpl / (unsigned long)card->utopia_pcr); | |
3557 | if (modl) | |
3558 | tst_entries++; | |
3559 | card->tst_free -= tst_entries; | |
3560 | fill_tst(card, NULL, tst_entries, TSTE_OPC_NULL); | |
3561 | ||
3562 | #ifdef HAVE_EEPROM | |
3563 | idt77252_eeprom_init(card); | |
3564 | printk("%s: EEPROM: %02x:", card->name, | |
3565 | idt77252_eeprom_read_status(card)); | |
3566 | ||
3567 | for (i = 0; i < 0x80; i++) { | |
3568 | printk(" %02x", | |
3569 | idt77252_eeprom_read_byte(card, i) | |
3570 | ); | |
3571 | } | |
3572 | printk("\n"); | |
3573 | #endif /* HAVE_EEPROM */ | |
3574 | ||
3575 | /* | |
3576 | * XXX: <hack> | |
3577 | */ | |
3578 | sprintf(tname, "eth%d", card->index); | |
3579 | tmp = dev_get_by_name(tname); /* jhs: was "tmp = dev_get(tname);" */ | |
3580 | if (tmp) { | |
3581 | memcpy(card->atmdev->esi, tmp->dev_addr, 6); | |
3582 | ||
3583 | printk("%s: ESI %02x:%02x:%02x:%02x:%02x:%02x\n", | |
3584 | card->name, card->atmdev->esi[0], card->atmdev->esi[1], | |
3585 | card->atmdev->esi[2], card->atmdev->esi[3], | |
3586 | card->atmdev->esi[4], card->atmdev->esi[5]); | |
3587 | } | |
3588 | /* | |
3589 | * XXX: </hack> | |
3590 | */ | |
3591 | ||
3592 | /* Set Maximum Deficit Count for now. */ | |
3593 | writel(0xffff, SAR_REG_MDFCT); | |
3594 | ||
3595 | set_bit(IDT77252_BIT_INIT, &card->flags); | |
3596 | ||
3597 | XPRINTK("%s: IDT77252 ABR SAR initialization complete.\n", card->name); | |
3598 | return 0; | |
3599 | } | |
3600 | ||
3601 | ||
3602 | /*****************************************************************************/ | |
3603 | /* */ | |
3604 | /* Probing of IDT77252 ABR SAR */ | |
3605 | /* */ | |
3606 | /*****************************************************************************/ | |
3607 | ||
3608 | ||
3609 | static int __devinit | |
3610 | idt77252_preset(struct idt77252_dev *card) | |
3611 | { | |
3612 | u16 pci_command; | |
3613 | ||
3614 | /*****************************************************************/ | |
3615 | /* P C I C O N F I G U R A T I O N */ | |
3616 | /*****************************************************************/ | |
3617 | ||
3618 | XPRINTK("%s: Enable PCI master and memory access for SAR.\n", | |
3619 | card->name); | |
3620 | if (pci_read_config_word(card->pcidev, PCI_COMMAND, &pci_command)) { | |
3621 | printk("%s: can't read PCI_COMMAND.\n", card->name); | |
3622 | deinit_card(card); | |
3623 | return -1; | |
3624 | } | |
3625 | if (!(pci_command & PCI_COMMAND_IO)) { | |
3626 | printk("%s: PCI_COMMAND: %04x (???)\n", | |
3627 | card->name, pci_command); | |
3628 | deinit_card(card); | |
3629 | return (-1); | |
3630 | } | |
3631 | pci_command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); | |
3632 | if (pci_write_config_word(card->pcidev, PCI_COMMAND, pci_command)) { | |
3633 | printk("%s: can't write PCI_COMMAND.\n", card->name); | |
3634 | deinit_card(card); | |
3635 | return -1; | |
3636 | } | |
3637 | /*****************************************************************/ | |
3638 | /* G E N E R I C R E S E T */ | |
3639 | /*****************************************************************/ | |
3640 | ||
3641 | /* Software reset */ | |
3642 | writel(SAR_CFG_SWRST, SAR_REG_CFG); | |
3643 | mdelay(1); | |
3644 | writel(0, SAR_REG_CFG); | |
3645 | ||
3646 | IPRINTK("%s: Software resetted.\n", card->name); | |
3647 | return 0; | |
3648 | } | |
3649 | ||
3650 | ||
3651 | static unsigned long __devinit | |
3652 | probe_sram(struct idt77252_dev *card) | |
3653 | { | |
3654 | u32 data, addr; | |
3655 | ||
3656 | writel(0, SAR_REG_DR0); | |
3657 | writel(SAR_CMD_WRITE_SRAM | (0 << 2), SAR_REG_CMD); | |
3658 | ||
3659 | for (addr = 0x4000; addr < 0x80000; addr += 0x4000) { | |
3c6b3773 | 3660 | writel(ATM_POISON, SAR_REG_DR0); |
1da177e4 LT |
3661 | writel(SAR_CMD_WRITE_SRAM | (addr << 2), SAR_REG_CMD); |
3662 | ||
3663 | writel(SAR_CMD_READ_SRAM | (0 << 2), SAR_REG_CMD); | |
3664 | data = readl(SAR_REG_DR0); | |
3665 | ||
3666 | if (data != 0) | |
3667 | break; | |
3668 | } | |
3669 | ||
3670 | return addr * sizeof(u32); | |
3671 | } | |
3672 | ||
3673 | static int __devinit | |
3674 | idt77252_init_one(struct pci_dev *pcidev, const struct pci_device_id *id) | |
3675 | { | |
3676 | static struct idt77252_dev **last = &idt77252_chain; | |
3677 | static int index = 0; | |
3678 | ||
3679 | unsigned long membase, srambase; | |
3680 | struct idt77252_dev *card; | |
3681 | struct atm_dev *dev; | |
1da177e4 LT |
3682 | int i, err; |
3683 | ||
3684 | ||
3685 | if ((err = pci_enable_device(pcidev))) { | |
3686 | printk("idt77252: can't enable PCI device at %s\n", pci_name(pcidev)); | |
3687 | return err; | |
3688 | } | |
3689 | ||
0c1cca1d | 3690 | card = kzalloc(sizeof(struct idt77252_dev), GFP_KERNEL); |
1da177e4 LT |
3691 | if (!card) { |
3692 | printk("idt77252-%d: can't allocate private data\n", index); | |
3693 | err = -ENOMEM; | |
3694 | goto err_out_disable_pdev; | |
3695 | } | |
44c10138 | 3696 | card->revision = pcidev->revision; |
1da177e4 LT |
3697 | card->index = index; |
3698 | card->pcidev = pcidev; | |
3699 | sprintf(card->name, "idt77252-%d", card->index); | |
3700 | ||
c4028958 | 3701 | INIT_WORK(&card->tqueue, idt77252_softint); |
1da177e4 LT |
3702 | |
3703 | membase = pci_resource_start(pcidev, 1); | |
3704 | srambase = pci_resource_start(pcidev, 2); | |
3705 | ||
7e7a2d07 | 3706 | mutex_init(&card->mutex); |
1da177e4 LT |
3707 | spin_lock_init(&card->cmd_lock); |
3708 | spin_lock_init(&card->tst_lock); | |
3709 | ||
3710 | init_timer(&card->tst_timer); | |
3711 | card->tst_timer.data = (unsigned long)card; | |
3712 | card->tst_timer.function = tst_timer; | |
3713 | ||
3714 | /* Do the I/O remapping... */ | |
3715 | card->membase = ioremap(membase, 1024); | |
3716 | if (!card->membase) { | |
3717 | printk("%s: can't ioremap() membase\n", card->name); | |
3718 | err = -EIO; | |
3719 | goto err_out_free_card; | |
3720 | } | |
3721 | ||
3722 | if (idt77252_preset(card)) { | |
3723 | printk("%s: preset failed\n", card->name); | |
3724 | err = -EIO; | |
3725 | goto err_out_iounmap; | |
3726 | } | |
3727 | ||
3728 | dev = atm_dev_register("idt77252", &idt77252_ops, -1, NULL); | |
3729 | if (!dev) { | |
3730 | printk("%s: can't register atm device\n", card->name); | |
3731 | err = -EIO; | |
3732 | goto err_out_iounmap; | |
3733 | } | |
3734 | dev->dev_data = card; | |
3735 | card->atmdev = dev; | |
3736 | ||
3737 | #ifdef CONFIG_ATM_IDT77252_USE_SUNI | |
3738 | suni_init(dev); | |
3739 | if (!dev->phy) { | |
3740 | printk("%s: can't init SUNI\n", card->name); | |
3741 | err = -EIO; | |
3742 | goto err_out_deinit_card; | |
3743 | } | |
3744 | #endif /* CONFIG_ATM_IDT77252_USE_SUNI */ | |
3745 | ||
3746 | card->sramsize = probe_sram(card); | |
3747 | ||
3748 | for (i = 0; i < 4; i++) { | |
3749 | card->fbq[i] = ioremap(srambase | 0x200000 | (i << 18), 4); | |
3750 | if (!card->fbq[i]) { | |
3751 | printk("%s: can't ioremap() FBQ%d\n", card->name, i); | |
3752 | err = -EIO; | |
3753 | goto err_out_deinit_card; | |
3754 | } | |
3755 | } | |
3756 | ||
3757 | printk("%s: ABR SAR (Rev %c): MEM %08lx SRAM %08lx [%u KB]\n", | |
44c10138 AK |
3758 | card->name, ((card->revision > 1) && (card->revision < 25)) ? |
3759 | 'A' + card->revision - 1 : '?', membase, srambase, | |
1da177e4 LT |
3760 | card->sramsize / 1024); |
3761 | ||
3762 | if (init_card(dev)) { | |
3763 | printk("%s: init_card failed\n", card->name); | |
3764 | err = -EIO; | |
3765 | goto err_out_deinit_card; | |
3766 | } | |
3767 | ||
3768 | dev->ci_range.vpi_bits = card->vpibits; | |
3769 | dev->ci_range.vci_bits = card->vcibits; | |
3770 | dev->link_rate = card->link_pcr; | |
3771 | ||
3772 | if (dev->phy->start) | |
3773 | dev->phy->start(dev); | |
3774 | ||
3775 | if (idt77252_dev_open(card)) { | |
3776 | printk("%s: dev_open failed\n", card->name); | |
3777 | err = -EIO; | |
3778 | goto err_out_stop; | |
3779 | } | |
3780 | ||
3781 | *last = card; | |
3782 | last = &card->next; | |
3783 | index++; | |
3784 | ||
3785 | return 0; | |
3786 | ||
3787 | err_out_stop: | |
3788 | if (dev->phy->stop) | |
3789 | dev->phy->stop(dev); | |
3790 | ||
3791 | err_out_deinit_card: | |
3792 | deinit_card(card); | |
3793 | ||
3794 | err_out_iounmap: | |
3795 | iounmap(card->membase); | |
3796 | ||
3797 | err_out_free_card: | |
3798 | kfree(card); | |
3799 | ||
3800 | err_out_disable_pdev: | |
3801 | pci_disable_device(pcidev); | |
3802 | return err; | |
3803 | } | |
3804 | ||
3805 | static struct pci_device_id idt77252_pci_tbl[] = | |
3806 | { | |
3807 | { PCI_VENDOR_ID_IDT, PCI_DEVICE_ID_IDT_IDT77252, | |
3808 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
3809 | { 0, } | |
3810 | }; | |
3811 | ||
3812 | MODULE_DEVICE_TABLE(pci, idt77252_pci_tbl); | |
3813 | ||
3814 | static struct pci_driver idt77252_driver = { | |
3815 | .name = "idt77252", | |
3816 | .id_table = idt77252_pci_tbl, | |
3817 | .probe = idt77252_init_one, | |
3818 | }; | |
3819 | ||
3820 | static int __init idt77252_init(void) | |
3821 | { | |
3822 | struct sk_buff *skb; | |
3823 | ||
3824 | printk("%s: at %p\n", __FUNCTION__, idt77252_init); | |
3825 | ||
3826 | if (sizeof(skb->cb) < sizeof(struct atm_skb_data) + | |
3827 | sizeof(struct idt77252_skb_prv)) { | |
3828 | printk(KERN_ERR "%s: skb->cb is too small (%lu < %lu)\n", | |
3829 | __FUNCTION__, (unsigned long) sizeof(skb->cb), | |
3830 | (unsigned long) sizeof(struct atm_skb_data) + | |
3831 | sizeof(struct idt77252_skb_prv)); | |
3832 | return -EIO; | |
3833 | } | |
3834 | ||
3835 | return pci_register_driver(&idt77252_driver); | |
3836 | } | |
3837 | ||
3838 | static void __exit idt77252_exit(void) | |
3839 | { | |
3840 | struct idt77252_dev *card; | |
3841 | struct atm_dev *dev; | |
3842 | ||
3843 | pci_unregister_driver(&idt77252_driver); | |
3844 | ||
3845 | while (idt77252_chain) { | |
3846 | card = idt77252_chain; | |
3847 | dev = card->atmdev; | |
3848 | idt77252_chain = card->next; | |
3849 | ||
3850 | if (dev->phy->stop) | |
3851 | dev->phy->stop(dev); | |
3852 | deinit_card(card); | |
3853 | pci_disable_device(card->pcidev); | |
3854 | kfree(card); | |
3855 | } | |
3856 | ||
3857 | DIPRINTK("idt77252: finished cleanup-module().\n"); | |
3858 | } | |
3859 | ||
3860 | module_init(idt77252_init); | |
3861 | module_exit(idt77252_exit); | |
3862 | ||
3863 | MODULE_LICENSE("GPL"); | |
3864 | ||
3865 | module_param(vpibits, uint, 0); | |
3866 | MODULE_PARM_DESC(vpibits, "number of VPI bits supported (0, 1, or 2)"); | |
3867 | #ifdef CONFIG_ATM_IDT77252_DEBUG | |
3868 | module_param(debug, ulong, 0644); | |
3869 | MODULE_PARM_DESC(debug, "debug bitmap, see drivers/atm/idt77252.h"); | |
3870 | #endif | |
3871 | ||
3872 | MODULE_AUTHOR("Eddie C. Dost <ecd@atecom.com>"); | |
3873 | MODULE_DESCRIPTION("IDT77252 ABR SAR Driver"); |