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[PATCH] timer initialization cleanup: DEFINE_TIMER
[usb.git] / drivers / atm / firestream.c
blob58219744f5dbfef006d41888c893ff54be6648c8
1
2 /* drivers/atm/firestream.c - FireStream 155 (MB86697) and
3 * FireStream 50 (MB86695) device driver
4 */
5
6 /* Written & (C) 2000 by R.E.Wolff@BitWizard.nl
7 * Copied snippets from zatm.c by Werner Almesberger, EPFL LRC/ICA
8 * and ambassador.c Copyright (C) 1995-1999 Madge Networks Ltd
9 */
10
11 /*
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25
26 The GNU GPL is contained in /usr/doc/copyright/GPL on a Debian
27 system and in the file COPYING in the Linux kernel source.
28 */
29
30
31 #include <linux/module.h>
32 #include <linux/sched.h>
33 #include <linux/kernel.h>
34 #include <linux/mm.h>
35 #include <linux/pci.h>
36 #include <linux/errno.h>
37 #include <linux/atm.h>
38 #include <linux/atmdev.h>
39 #include <linux/sonet.h>
40 #include <linux/skbuff.h>
41 #include <linux/netdevice.h>
42 #include <linux/delay.h>
43 #include <linux/ioport.h> /* for request_region */
44 #include <linux/uio.h>
45 #include <linux/init.h>
46 #include <linux/capability.h>
47 #include <linux/bitops.h>
48 #include <asm/byteorder.h>
49 #include <asm/system.h>
50 #include <asm/string.h>
51 #include <asm/io.h>
52 #include <asm/atomic.h>
53 #include <asm/uaccess.h>
54 #include <linux/wait.h>
55
56 #include "firestream.h"
57
58 static int loopback = 0;
59 static int num=0x5a;
60
61 /* According to measurements (but they look suspicious to me!) done in
62 * '97, 37% of the packets are one cell in size. So it pays to have
63 * buffers allocated at that size. A large jump in percentage of
64 * packets occurs at packets around 536 bytes in length. So it also
65 * pays to have those pre-allocated. Unfortunately, we can't fully
66 * take advantage of this as the majority of the packets is likely to
67 * be TCP/IP (As where obviously the measurement comes from) There the
68 * link would be opened with say a 1500 byte MTU, and we can't handle
69 * smaller buffers more efficiently than the larger ones. -- REW
70 */
71
72 /* Due to the way Linux memory management works, specifying "576" as
73 * an allocation size here isn't going to help. They are allocated
74 * from 1024-byte regions anyway. With the size of the sk_buffs (quite
75 * large), it doesn't pay to allocate the smallest size (64) -- REW */
76
77 /* This is all guesswork. Hard numbers to back this up or disprove this,
78 * are appreciated. -- REW */
79
80 /* The last entry should be about 64k. However, the "buffer size" is
81 * passed to the chip in a 16 bit field. I don't know how "65536"
82 * would be interpreted. -- REW */
83
84 #define NP FS_NR_FREE_POOLS
85 static int rx_buf_sizes[NP] = {128, 256, 512, 1024, 2048, 4096, 16384, 65520};
86 /* log2: 7 8 9 10 11 12 14 16 */
87
88 #if 0
89 static int rx_pool_sizes[NP] = {1024, 1024, 512, 256, 128, 64, 32, 32};
90 #else
91 /* debug */
92 static int rx_pool_sizes[NP] = {128, 128, 128, 64, 64, 64, 32, 32};
93 #endif
94 /* log2: 10 10 9 8 7 6 5 5 */
95 /* sumlog2: 17 18 18 18 18 18 19 21 */
96 /* mem allocated: 128k 256k 256k 256k 256k 256k 512k 2M */
97 /* tot mem: almost 4M */
98
99 /* NP is shorter, so that it fits on a single line. */
100 #undef NP
101
102
103 /* Small hardware gotcha:
104
105 The FS50 CAM (VP/VC match registers) always take the lowest channel
106 number that matches. This is not a problem.
107
108 However, they also ignore whether the channel is enabled or
109 not. This means that if you allocate channel 0 to 1.2 and then
110 channel 1 to 0.0, then disabeling channel 0 and writing 0 to the
111 match channel for channel 0 will "steal" the traffic from channel
112 1, even if you correctly disable channel 0.
113
114 Workaround:
115
116 - When disabling channels, write an invalid VP/VC value to the
117 match register. (We use 0xffffffff, which in the worst case
118 matches VP/VC = <maxVP>/<maxVC>, but I expect it not to match
119 anything as some "when not in use, program to 0" bits are now
120 programmed to 1...)
121
122 - Don't initialize the match registers to 0, as 0.0 is a valid
123 channel.
124 */
125
126
127 /* Optimization hints and tips.
128
129 The FireStream chips are very capable of reducing the amount of
130 "interrupt-traffic" for the CPU. This driver requests an interrupt on EVERY
131 action. You could try to minimize this a bit.
132
133 Besides that, the userspace->kernel copy and the PCI bus are the
134 performance limiting issues for this driver.
135
136 You could queue up a bunch of outgoing packets without telling the
137 FireStream. I'm not sure that's going to win you much though. The
138 Linux layer won't tell us in advance when it's not going to give us
139 any more packets in a while. So this is tricky to implement right without
140 introducing extra delays.
141
142 -- REW
143 */
144
145
146
147
148 /* The strings that define what the RX queue entry is all about. */
149 /* Fujitsu: Please tell me which ones can have a pointer to a
150 freepool descriptor! */
151 static char *res_strings[] = {
152 "RX OK: streaming not EOP",
153 "RX OK: streaming EOP",
154 "RX OK: Single buffer packet",
155 "RX OK: packet mode",
156 "RX OK: F4 OAM (end to end)",
157 "RX OK: F4 OAM (Segment)",
158 "RX OK: F5 OAM (end to end)",
159 "RX OK: F5 OAM (Segment)",
160 "RX OK: RM cell",
161 "RX OK: TRANSP cell",
162 "RX OK: TRANSPC cell",
163 "Unmatched cell",
164 "reserved 12",
165 "reserved 13",
166 "reserved 14",
167 "Unrecognized cell",
168 "reserved 16",
169 "reassemby abort: AAL5 abort",
170 "packet purged",
171 "packet ageing timeout",
172 "channel ageing timeout",
173 "calculated lenght error",
174 "programmed lenght limit error",
175 "aal5 crc32 error",
176 "oam transp or transpc crc10 error",
177 "reserved 25",
178 "reserved 26",
179 "reserved 27",
180 "reserved 28",
181 "reserved 29",
182 "reserved 30",
183 "reassembly abort: no buffers",
184 "receive buffer overflow",
185 "change in GFC",
186 "receive buffer full",
187 "low priority discard - no receive descriptor",
188 "low priority discard - missing end of packet",
189 "reserved 41",
190 "reserved 42",
191 "reserved 43",
192 "reserved 44",
193 "reserved 45",
194 "reserved 46",
195 "reserved 47",
196 "reserved 48",
197 "reserved 49",
198 "reserved 50",
199 "reserved 51",
200 "reserved 52",
201 "reserved 53",
202 "reserved 54",
203 "reserved 55",
204 "reserved 56",
205 "reserved 57",
206 "reserved 58",
207 "reserved 59",
208 "reserved 60",
209 "reserved 61",
210 "reserved 62",
211 "reserved 63",
212 };
213
214 static char *irq_bitname[] = {
215 "LPCO",
216 "DPCO",
217 "RBRQ0_W",
218 "RBRQ1_W",
219 "RBRQ2_W",
220 "RBRQ3_W",
221 "RBRQ0_NF",
222 "RBRQ1_NF",
223 "RBRQ2_NF",
224 "RBRQ3_NF",
225 "BFP_SC",
226 "INIT",
227 "INIT_ERR",
228 "USCEO",
229 "UPEC0",
230 "VPFCO",
231 "CRCCO",
232 "HECO",
233 "TBRQ_W",
234 "TBRQ_NF",
235 "CTPQ_E",
236 "GFC_C0",
237 "PCI_FTL",
238 "CSQ_W",
239 "CSQ_NF",
240 "EXT_INT",
241 "RXDMA_S"
242 };
243
244
245 #define PHY_EOF -1
246 #define PHY_CLEARALL -2
247
248 struct reginit_item {
249 int reg, val;
250 };
251
252
253 static struct reginit_item PHY_NTC_INIT[] __devinitdata = {
254 { PHY_CLEARALL, 0x40 },
255 { 0x12, 0x0001 },
256 { 0x13, 0x7605 },
257 { 0x1A, 0x0001 },
258 { 0x1B, 0x0005 },
259 { 0x38, 0x0003 },
260 { 0x39, 0x0006 }, /* changed here to make loopback */
261 { 0x01, 0x5262 },
262 { 0x15, 0x0213 },
263 { 0x00, 0x0003 },
264 { PHY_EOF, 0}, /* -1 signals end of list */
265 };
266
267
268 /* Safetyfeature: If the card interrupts more than this number of times
269 in a jiffy (1/100th of a second) then we just disable the interrupt and
270 print a message. This prevents the system from hanging.
271
272 150000 packets per second is close to the limit a PC is going to have
273 anyway. We therefore have to disable this for production. -- REW */
274 #undef IRQ_RATE_LIMIT // 100
275
276 /* Interrupts work now. Unlike serial cards, ATM cards don't work all
277 that great without interrupts. -- REW */
278 #undef FS_POLL_FREQ // 100
279
280 /*
281 This driver can spew a whole lot of debugging output at you. If you
282 need maximum performance, you should disable the DEBUG define. To
283 aid in debugging in the field, I'm leaving the compile-time debug
284 features enabled, and disable them "runtime". That allows me to
285 instruct people with problems to enable debugging without requiring
286 them to recompile... -- REW
287 */
288 #define DEBUG
289
290 #ifdef DEBUG
291 #define fs_dprintk(f, str...) if (fs_debug & f) printk (str)
292 #else
293 #define fs_dprintk(f, str...) /* nothing */
294 #endif
295
296
297 static int fs_keystream = 0;
298
299 #ifdef DEBUG
300 /* I didn't forget to set this to zero before shipping. Hit me with a stick
301 if you get this with the debug default not set to zero again. -- REW */
302 static int fs_debug = 0;
303 #else
304 #define fs_debug 0
305 #endif
306
307 #ifdef MODULE
308 #ifdef DEBUG
309 module_param(fs_debug, int, 0644);
310 #endif
311 module_param(loopback, int, 0);
312 module_param(num, int, 0);
313 module_param(fs_keystream, int, 0);
314 /* XXX Add rx_buf_sizes, and rx_pool_sizes As per request Amar. -- REW */
315 #endif
316
317
318 #define FS_DEBUG_FLOW 0x00000001
319 #define FS_DEBUG_OPEN 0x00000002
320 #define FS_DEBUG_QUEUE 0x00000004
321 #define FS_DEBUG_IRQ 0x00000008
322 #define FS_DEBUG_INIT 0x00000010
323 #define FS_DEBUG_SEND 0x00000020
324 #define FS_DEBUG_PHY 0x00000040
325 #define FS_DEBUG_CLEANUP 0x00000080
326 #define FS_DEBUG_QOS 0x00000100
327 #define FS_DEBUG_TXQ 0x00000200
328 #define FS_DEBUG_ALLOC 0x00000400
329 #define FS_DEBUG_TXMEM 0x00000800
330 #define FS_DEBUG_QSIZE 0x00001000
331
332
333 #define func_enter() fs_dprintk (FS_DEBUG_FLOW, "fs: enter %s\n", __FUNCTION__)
334 #define func_exit() fs_dprintk (FS_DEBUG_FLOW, "fs: exit %s\n", __FUNCTION__)
335
336
337 static struct fs_dev *fs_boards = NULL;
338
339 #ifdef DEBUG
340
341 static void my_hd (void *addr, int len)
342 {
343 int j, ch;
344 unsigned char *ptr = addr;
345
346 while (len > 0) {
347 printk ("%p ", ptr);
348 for (j=0;j < ((len < 16)?len:16);j++) {
349 printk ("%02x %s", ptr[j], (j==7)?" ":"");
350 }
351 for ( ;j < 16;j++) {
352 printk (" %s", (j==7)?" ":"");
353 }
354 for (j=0;j < ((len < 16)?len:16);j++) {
355 ch = ptr[j];
356 printk ("%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch));
357 }
358 printk ("\n");
359 ptr += 16;
360 len -= 16;
361 }
362 }
363 #else /* DEBUG */
364 static void my_hd (void *addr, int len){}
365 #endif /* DEBUG */
366
367 /********** free an skb (as per ATM device driver documentation) **********/
368
369 /* Hmm. If this is ATM specific, why isn't there an ATM routine for this?
370 * I copied it over from the ambassador driver. -- REW */
371
372 static inline void fs_kfree_skb (struct sk_buff * skb)
373 {
374 if (ATM_SKB(skb)->vcc->pop)
375 ATM_SKB(skb)->vcc->pop (ATM_SKB(skb)->vcc, skb);
376 else
377 dev_kfree_skb_any (skb);
378 }
379
380
381
382
383 /* It seems the ATM forum recommends this horribly complicated 16bit
384 * floating point format. Turns out the Ambassador uses the exact same
385 * encoding. I just copied it over. If Mitch agrees, I'll move it over
386 * to the atm_misc file or something like that. (and remove it from
387 * here and the ambassador driver) -- REW
388 */
389
390 /* The good thing about this format is that it is monotonic. So,
391 a conversion routine need not be very complicated. To be able to
392 round "nearest" we need to take along a few extra bits. Lets
393 put these after 16 bits, so that we can just return the top 16
394 bits of the 32bit number as the result:
395
396 int mr (unsigned int rate, int r)
397 {
398 int e = 16+9;
399 static int round[4]={0, 0, 0xffff, 0x8000};
400 if (!rate) return 0;
401 while (rate & 0xfc000000) {
402 rate >>= 1;
403 e++;
404 }
405 while (! (rate & 0xfe000000)) {
406 rate <<= 1;
407 e--;
408 }
409
410 // Now the mantissa is in positions bit 16-25. Excepf for the "hidden 1" that's in bit 26.
411 rate &= ~0x02000000;
412 // Next add in the exponent
413 rate |= e << (16+9);
414 // And perform the rounding:
415 return (rate + round[r]) >> 16;
416 }
417
418 14 lines-of-code. Compare that with the 120 that the Ambassador
419 guys needed. (would be 8 lines shorter if I'd try to really reduce
420 the number of lines:
421
422 int mr (unsigned int rate, int r)
423 {
424 int e = 16+9;
425 static int round[4]={0, 0, 0xffff, 0x8000};
426 if (!rate) return 0;
427 for (; rate & 0xfc000000 ;rate >>= 1, e++);
428 for (;!(rate & 0xfe000000);rate <<= 1, e--);
429 return ((rate & ~0x02000000) | (e << (16+9)) + round[r]) >> 16;
430 }
431
432 Exercise for the reader: Remove one more line-of-code, without
433 cheating. (Just joining two lines is cheating). (I know it's
434 possible, don't think you've beat me if you found it... If you
435 manage to lose two lines or more, keep me updated! ;-)
436
437 -- REW */
438
439
440 #define ROUND_UP 1
441 #define ROUND_DOWN 2
442 #define ROUND_NEAREST 3
443 /********** make rate (not quite as much fun as Horizon) **********/
444
445 static unsigned int make_rate (unsigned int rate, int r,
446 u16 * bits, unsigned int * actual)
447 {
448 unsigned char exp = -1; /* hush gcc */
449 unsigned int man = -1; /* hush gcc */
450
451 fs_dprintk (FS_DEBUG_QOS, "make_rate %u", rate);
452
453 /* rates in cells per second, ITU format (nasty 16-bit floating-point)
454 given 5-bit e and 9-bit m:
455 rate = EITHER (1+m/2^9)*2^e OR 0
456 bits = EITHER 1<<14 | e<<9 | m OR 0
457 (bit 15 is "reserved", bit 14 "non-zero")
458 smallest rate is 0 (special representation)
459 largest rate is (1+511/512)*2^31 = 4290772992 (< 2^32-1)
460 smallest non-zero rate is (1+0/512)*2^0 = 1 (> 0)
461 simple algorithm:
462 find position of top bit, this gives e
463 remove top bit and shift (rounding if feeling clever) by 9-e
464 */
465 /* Ambassador ucode bug: please don't set bit 14! so 0 rate not
466 representable. // This should move into the ambassador driver
467 when properly merged. -- REW */
468
469 if (rate > 0xffc00000U) {
470 /* larger than largest representable rate */
471
472 if (r == ROUND_UP) {
473 return -EINVAL;
474 } else {
475 exp = 31;
476 man = 511;
477 }
478
479 } else if (rate) {
480 /* representable rate */
481
482 exp = 31;
483 man = rate;
484
485 /* invariant: rate = man*2^(exp-31) */
486 while (!(man & (1<<31))) {
487 exp = exp - 1;
488 man = man<<1;
489 }
490
491 /* man has top bit set
492 rate = (2^31+(man-2^31))*2^(exp-31)
493 rate = (1+(man-2^31)/2^31)*2^exp
494 */
495 man = man<<1;
496 man &= 0xffffffffU; /* a nop on 32-bit systems */
497 /* rate = (1+man/2^32)*2^exp
498
499 exp is in the range 0 to 31, man is in the range 0 to 2^32-1
500 time to lose significance... we want m in the range 0 to 2^9-1
501 rounding presents a minor problem... we first decide which way
502 we are rounding (based on given rounding direction and possibly
503 the bits of the mantissa that are to be discarded).
504 */
505
506 switch (r) {
507 case ROUND_DOWN: {
508 /* just truncate */
509 man = man>>(32-9);
510 break;
511 }
512 case ROUND_UP: {
513 /* check all bits that we are discarding */
514 if (man & (-1>>9)) {
515 man = (man>>(32-9)) + 1;
516 if (man == (1<<9)) {
517 /* no need to check for round up outside of range */
518 man = 0;
519 exp += 1;
520 }
521 } else {
522 man = (man>>(32-9));
523 }
524 break;
525 }
526 case ROUND_NEAREST: {
527 /* check msb that we are discarding */
528 if (man & (1<<(32-9-1))) {
529 man = (man>>(32-9)) + 1;
530 if (man == (1<<9)) {
531 /* no need to check for round up outside of range */
532 man = 0;
533 exp += 1;
534 }
535 } else {
536 man = (man>>(32-9));
537 }
538 break;
539 }
540 }
541
542 } else {
543 /* zero rate - not representable */
544
545 if (r == ROUND_DOWN) {
546 return -EINVAL;
547 } else {
548 exp = 0;
549 man = 0;
550 }
551 }
552
553 fs_dprintk (FS_DEBUG_QOS, "rate: man=%u, exp=%hu", man, exp);
554
555 if (bits)
556 *bits = /* (1<<14) | */ (exp<<9) | man;
557
558 if (actual)
559 *actual = (exp >= 9)
560 ? (1 << exp) + (man << (exp-9))
561 : (1 << exp) + ((man + (1<<(9-exp-1))) >> (9-exp));
562
563 return 0;
564 }
565
566
567
568
569 /* FireStream access routines */
570 /* For DEEP-DOWN debugging these can be rigged to intercept accesses to
571 certain registers or to just log all accesses. */
572
573 static inline void write_fs (struct fs_dev *dev, int offset, u32 val)
574 {
575 writel (val, dev->base + offset);
576 }
577
578
579 static inline u32 read_fs (struct fs_dev *dev, int offset)
580 {
581 return readl (dev->base + offset);
582 }
583
584
585
586 static inline struct FS_QENTRY *get_qentry (struct fs_dev *dev, struct queue *q)
587 {
588 return bus_to_virt (read_fs (dev, Q_WP(q->offset)) & Q_ADDR_MASK);
589 }
590
591
592 static void submit_qentry (struct fs_dev *dev, struct queue *q, struct FS_QENTRY *qe)
593 {
594 u32 wp;
595 struct FS_QENTRY *cqe;
596
597 /* XXX Sanity check: the write pointer can be checked to be
598 still the same as the value passed as qe... -- REW */
599 /* udelay (5); */
600 while ((wp = read_fs (dev, Q_WP (q->offset))) & Q_FULL) {
601 fs_dprintk (FS_DEBUG_TXQ, "Found queue at %x full. Waiting.\n",
602 q->offset);
603 schedule ();
604 }
605
606 wp &= ~0xf;
607 cqe = bus_to_virt (wp);
608 if (qe != cqe) {
609 fs_dprintk (FS_DEBUG_TXQ, "q mismatch! %p %p\n", qe, cqe);
610 }
611
612 write_fs (dev, Q_WP(q->offset), Q_INCWRAP);
613
614 {
615 static int c;
616 if (!(c++ % 100))
617 {
618 int rp, wp;
619 rp = read_fs (dev, Q_RP(q->offset));
620 wp = read_fs (dev, Q_WP(q->offset));
621 fs_dprintk (FS_DEBUG_TXQ, "q at %d: %x-%x: %x entries.\n",
622 q->offset, rp, wp, wp-rp);
623 }
624 }
625 }
626
627 #ifdef DEBUG_EXTRA
628 static struct FS_QENTRY pq[60];
629 static int qp;
630
631 static struct FS_BPENTRY dq[60];
632 static int qd;
633 static void *da[60];
634 #endif
635
636 static void submit_queue (struct fs_dev *dev, struct queue *q,
637 u32 cmd, u32 p1, u32 p2, u32 p3)
638 {
639 struct FS_QENTRY *qe;
640
641 qe = get_qentry (dev, q);
642 qe->cmd = cmd;
643 qe->p0 = p1;
644 qe->p1 = p2;
645 qe->p2 = p3;
646 submit_qentry (dev, q, qe);
647
648 #ifdef DEBUG_EXTRA
649 pq[qp].cmd = cmd;
650 pq[qp].p0 = p1;
651 pq[qp].p1 = p2;
652 pq[qp].p2 = p3;
653 qp++;
654 if (qp >= 60) qp = 0;
655 #endif
656 }
657
658 /* Test the "other" way one day... -- REW */
659 #if 1
660 #define submit_command submit_queue
661 #else
662
663 static void submit_command (struct fs_dev *dev, struct queue *q,
664 u32 cmd, u32 p1, u32 p2, u32 p3)
665 {
666 write_fs (dev, CMDR0, cmd);
667 write_fs (dev, CMDR1, p1);
668 write_fs (dev, CMDR2, p2);
669 write_fs (dev, CMDR3, p3);
670 }
671 #endif
672
673
674
675 static void process_return_queue (struct fs_dev *dev, struct queue *q)
676 {
677 long rq;
678 struct FS_QENTRY *qe;
679 void *tc;
680
681 while (!((rq = read_fs (dev, Q_RP(q->offset))) & Q_EMPTY)) {
682 fs_dprintk (FS_DEBUG_QUEUE, "reaping return queue entry at %lx\n", rq);
683 qe = bus_to_virt (rq);
684
685 fs_dprintk (FS_DEBUG_QUEUE, "queue entry: %08x %08x %08x %08x. (%d)\n",
686 qe->cmd, qe->p0, qe->p1, qe->p2, STATUS_CODE (qe));
687
688 switch (STATUS_CODE (qe)) {
689 case 5:
690 tc = bus_to_virt (qe->p0);
691 fs_dprintk (FS_DEBUG_ALLOC, "Free tc: %p\n", tc);
692 kfree (tc);
693 break;
694 }
695
696 write_fs (dev, Q_RP(q->offset), Q_INCWRAP);
697 }
698 }
699
700
701 static void process_txdone_queue (struct fs_dev *dev, struct queue *q)
702 {
703 long rq;
704 long tmp;
705 struct FS_QENTRY *qe;
706 struct sk_buff *skb;
707 struct FS_BPENTRY *td;
708
709 while (!((rq = read_fs (dev, Q_RP(q->offset))) & Q_EMPTY)) {
710 fs_dprintk (FS_DEBUG_QUEUE, "reaping txdone entry at %lx\n", rq);
711 qe = bus_to_virt (rq);
712
713 fs_dprintk (FS_DEBUG_QUEUE, "queue entry: %08x %08x %08x %08x: %d\n",
714 qe->cmd, qe->p0, qe->p1, qe->p2, STATUS_CODE (qe));
715
716 if (STATUS_CODE (qe) != 2)
717 fs_dprintk (FS_DEBUG_TXMEM, "queue entry: %08x %08x %08x %08x: %d\n",
718 qe->cmd, qe->p0, qe->p1, qe->p2, STATUS_CODE (qe));
719
720
721 switch (STATUS_CODE (qe)) {
722 case 0x01: /* This is for AAL0 where we put the chip in streaming mode */
723 /* Fall through */
724 case 0x02:
725 /* Process a real txdone entry. */
726 tmp = qe->p0;
727 if (tmp & 0x0f)
728 printk (KERN_WARNING "td not aligned: %ld\n", tmp);
729 tmp &= ~0x0f;
730 td = bus_to_virt (tmp);
731
732 fs_dprintk (FS_DEBUG_QUEUE, "Pool entry: %08x %08x %08x %08x %p.\n",
733 td->flags, td->next, td->bsa, td->aal_bufsize, td->skb );
734
735 skb = td->skb;
736 if (skb == FS_VCC (ATM_SKB(skb)->vcc)->last_skb) {
737 wake_up_interruptible (& FS_VCC (ATM_SKB(skb)->vcc)->close_wait);
738 FS_VCC (ATM_SKB(skb)->vcc)->last_skb = NULL;
739 }
740 td->dev->ntxpckts--;
741
742 {
743 static int c=0;
744
745 if (!(c++ % 100)) {
746 fs_dprintk (FS_DEBUG_QSIZE, "[%d]", td->dev->ntxpckts);
747 }
748 }
749
750 atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
751
752 fs_dprintk (FS_DEBUG_TXMEM, "i");
753 fs_dprintk (FS_DEBUG_ALLOC, "Free t-skb: %p\n", skb);
754 fs_kfree_skb (skb);
755
756 fs_dprintk (FS_DEBUG_ALLOC, "Free trans-d: %p\n", td);
757 memset (td, 0x12, sizeof (struct FS_BPENTRY));
758 kfree (td);
759 break;
760 default:
761 /* Here we get the tx purge inhibit command ... */
762 /* Action, I believe, is "don't do anything". -- REW */
763 ;
764 }
765
766 write_fs (dev, Q_RP(q->offset), Q_INCWRAP);
767 }
768 }
769
770
771 static void process_incoming (struct fs_dev *dev, struct queue *q)
772 {
773 long rq;
774 struct FS_QENTRY *qe;
775 struct FS_BPENTRY *pe;
776 struct sk_buff *skb;
777 unsigned int channo;
778 struct atm_vcc *atm_vcc;
779
780 while (!((rq = read_fs (dev, Q_RP(q->offset))) & Q_EMPTY)) {
781 fs_dprintk (FS_DEBUG_QUEUE, "reaping incoming queue entry at %lx\n", rq);
782 qe = bus_to_virt (rq);
783
784 fs_dprintk (FS_DEBUG_QUEUE, "queue entry: %08x %08x %08x %08x. ",
785 qe->cmd, qe->p0, qe->p1, qe->p2);
786
787 fs_dprintk (FS_DEBUG_QUEUE, "-> %x: %s\n",
788 STATUS_CODE (qe),
789 res_strings[STATUS_CODE(qe)]);
790
791 pe = bus_to_virt (qe->p0);
792 fs_dprintk (FS_DEBUG_QUEUE, "Pool entry: %08x %08x %08x %08x %p %p.\n",
793 pe->flags, pe->next, pe->bsa, pe->aal_bufsize,
794 pe->skb, pe->fp);
795
796 channo = qe->cmd & 0xffff;
797
798 if (channo < dev->nchannels)
799 atm_vcc = dev->atm_vccs[channo];
800 else
801 atm_vcc = NULL;
802
803 /* Single buffer packet */
804 switch (STATUS_CODE (qe)) {
805 case 0x1:
806 /* Fall through for streaming mode */
807 case 0x2:/* Packet received OK.... */
808 if (atm_vcc) {
809 skb = pe->skb;
810 pe->fp->n--;
811 #if 0
812 fs_dprintk (FS_DEBUG_QUEUE, "Got skb: %p\n", skb);
813 if (FS_DEBUG_QUEUE & fs_debug) my_hd (bus_to_virt (pe->bsa), 0x20);
814 #endif
815 skb_put (skb, qe->p1 & 0xffff);
816 ATM_SKB(skb)->vcc = atm_vcc;
817 atomic_inc(&atm_vcc->stats->rx);
818 __net_timestamp(skb);
819 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p (pushed)\n", skb);
820 atm_vcc->push (atm_vcc, skb);
821 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-d: %p\n", pe);
822 kfree (pe);
823 } else {
824 printk (KERN_ERR "Got a receive on a non-open channel %d.\n", channo);
825 }
826 break;
827 case 0x17:/* AAL 5 CRC32 error. IFF the length field is nonzero, a buffer
828 has been consumed and needs to be processed. -- REW */
829 if (qe->p1 & 0xffff) {
830 pe = bus_to_virt (qe->p0);
831 pe->fp->n--;
832 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p\n", pe->skb);
833 dev_kfree_skb_any (pe->skb);
834 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-d: %p\n", pe);
835 kfree (pe);
836 }
837 if (atm_vcc)
838 atomic_inc(&atm_vcc->stats->rx_drop);
839 break;
840 case 0x1f: /* Reassembly abort: no buffers. */
841 /* Silently increment error counter. */
842 if (atm_vcc)
843 atomic_inc(&atm_vcc->stats->rx_drop);
844 break;
845 default: /* Hmm. Haven't written the code to handle the others yet... -- REW */
846 printk (KERN_WARNING "Don't know what to do with RX status %x: %s.\n",
847 STATUS_CODE(qe), res_strings[STATUS_CODE (qe)]);
848 }
849 write_fs (dev, Q_RP(q->offset), Q_INCWRAP);
850 }
851 }
852
853
854
855 #define DO_DIRECTION(tp) ((tp)->traffic_class != ATM_NONE)
856
857 static int fs_open(struct atm_vcc *atm_vcc)
858 {
859 struct fs_dev *dev;
860 struct fs_vcc *vcc;
861 struct fs_transmit_config *tc;
862 struct atm_trafprm * txtp;
863 struct atm_trafprm * rxtp;
864 /* struct fs_receive_config *rc;*/
865 /* struct FS_QENTRY *qe; */
866 int error;
867 int bfp;
868 int to;
869 unsigned short tmc0;
870 short vpi = atm_vcc->vpi;
871 int vci = atm_vcc->vci;
872
873 func_enter ();
874
875 dev = FS_DEV(atm_vcc->dev);
876 fs_dprintk (FS_DEBUG_OPEN, "fs: open on dev: %p, vcc at %p\n",
877 dev, atm_vcc);
878
879 if (vci != ATM_VPI_UNSPEC && vpi != ATM_VCI_UNSPEC)
880 set_bit(ATM_VF_ADDR, &atm_vcc->flags);
881
882 if ((atm_vcc->qos.aal != ATM_AAL5) &&
883 (atm_vcc->qos.aal != ATM_AAL2))
884 return -EINVAL; /* XXX AAL0 */
885
886 fs_dprintk (FS_DEBUG_OPEN, "fs: (itf %d): open %d.%d\n",
887 atm_vcc->dev->number, atm_vcc->vpi, atm_vcc->vci);
888
889 /* XXX handle qos parameters (rate limiting) ? */
890
891 vcc = kmalloc(sizeof(struct fs_vcc), GFP_KERNEL);
892 fs_dprintk (FS_DEBUG_ALLOC, "Alloc VCC: %p(%Zd)\n", vcc, sizeof(struct fs_vcc));
893 if (!vcc) {
894 clear_bit(ATM_VF_ADDR, &atm_vcc->flags);
895 return -ENOMEM;
896 }
897
898 atm_vcc->dev_data = vcc;
899 vcc->last_skb = NULL;
900
901 init_waitqueue_head (&vcc->close_wait);
902
903 txtp = &atm_vcc->qos.txtp;
904 rxtp = &atm_vcc->qos.rxtp;
905
906 if (!test_bit(ATM_VF_PARTIAL, &atm_vcc->flags)) {
907 if (IS_FS50(dev)) {
908 /* Increment the channel numer: take a free one next time. */
909 for (to=33;to;to--, dev->channo++) {
910 /* We only have 32 channels */
911 if (dev->channo >= 32)
912 dev->channo = 0;
913 /* If we need to do RX, AND the RX is inuse, try the next */
914 if (DO_DIRECTION(rxtp) && dev->atm_vccs[dev->channo])
915 continue;
916 /* If we need to do TX, AND the TX is inuse, try the next */
917 if (DO_DIRECTION(txtp) && test_bit (dev->channo, dev->tx_inuse))
918 continue;
919 /* Ok, both are free! (or not needed) */
920 break;
921 }
922 if (!to) {
923 printk ("No more free channels for FS50..\n");
924 return -EBUSY;
925 }
926 vcc->channo = dev->channo;
927 dev->channo &= dev->channel_mask;
928
929 } else {
930 vcc->channo = (vpi << FS155_VCI_BITS) | (vci);
931 if (((DO_DIRECTION(rxtp) && dev->atm_vccs[vcc->channo])) ||
932 ( DO_DIRECTION(txtp) && test_bit (vcc->channo, dev->tx_inuse))) {
933 printk ("Channel is in use for FS155.\n");
934 return -EBUSY;
935 }
936 }
937 fs_dprintk (FS_DEBUG_OPEN, "OK. Allocated channel %x(%d).\n",
938 vcc->channo, vcc->channo);
939 }
940
941 if (DO_DIRECTION (txtp)) {
942 tc = kmalloc (sizeof (struct fs_transmit_config), GFP_KERNEL);
943 fs_dprintk (FS_DEBUG_ALLOC, "Alloc tc: %p(%Zd)\n",
944 tc, sizeof (struct fs_transmit_config));
945 if (!tc) {
946 fs_dprintk (FS_DEBUG_OPEN, "fs: can't alloc transmit_config.\n");
947 return -ENOMEM;
948 }
949
950 /* Allocate the "open" entry from the high priority txq. This makes
951 it most likely that the chip will notice it. It also prevents us
952 from having to wait for completion. On the other hand, we may
953 need to wait for completion anyway, to see if it completed
954 succesfully. */
955
956 switch (atm_vcc->qos.aal) {
957 case ATM_AAL2:
958 case ATM_AAL0:
959 tc->flags = 0
960 | TC_FLAGS_TRANSPARENT_PAYLOAD
961 | TC_FLAGS_PACKET
962 | (1 << 28)
963 | TC_FLAGS_TYPE_UBR /* XXX Change to VBR -- PVDL */
964 | TC_FLAGS_CAL0;
965 break;
966 case ATM_AAL5:
967 tc->flags = 0
968 | TC_FLAGS_AAL5
969 | TC_FLAGS_PACKET /* ??? */
970 | TC_FLAGS_TYPE_CBR
971 | TC_FLAGS_CAL0;
972 break;
973 default:
974 printk ("Unknown aal: %d\n", atm_vcc->qos.aal);
975 tc->flags = 0;
976 }
977 /* Docs are vague about this atm_hdr field. By the way, the FS
978 * chip makes odd errors if lower bits are set.... -- REW */
979 tc->atm_hdr = (vpi << 20) | (vci << 4);
980 {
981 int pcr = atm_pcr_goal (txtp);
982
983 fs_dprintk (FS_DEBUG_OPEN, "pcr = %d.\n", pcr);
984
985 /* XXX Hmm. officially we're only allowed to do this if rounding
986 is round_down -- REW */
987 if (IS_FS50(dev)) {
988 if (pcr > 51840000/53/8) pcr = 51840000/53/8;
989 } else {
990 if (pcr > 155520000/53/8) pcr = 155520000/53/8;
991 }
992 if (!pcr) {
993 /* no rate cap */
994 tmc0 = IS_FS50(dev)?0x61BE:0x64c9; /* Just copied over the bits from Fujitsu -- REW */
995 } else {
996 int r;
997 if (pcr < 0) {
998 r = ROUND_DOWN;
999 pcr = -pcr;
1000 } else {
1001 r = ROUND_UP;
1002 }
1003 error = make_rate (pcr, r, &tmc0, NULL);
1004 }
1005 fs_dprintk (FS_DEBUG_OPEN, "pcr = %d.\n", pcr);
1006 }
1007
1008 tc->TMC[0] = tmc0 | 0x4000;
1009 tc->TMC[1] = 0; /* Unused */
1010 tc->TMC[2] = 0; /* Unused */
1011 tc->TMC[3] = 0; /* Unused */
1012
1013 tc->spec = 0; /* UTOPIA address, UDF, HEC: Unused -> 0 */
1014 tc->rtag[0] = 0; /* What should I do with routing tags???
1015 -- Not used -- AS -- Thanks -- REW*/
1016 tc->rtag[1] = 0;
1017 tc->rtag[2] = 0;
1018
1019 if (fs_debug & FS_DEBUG_OPEN) {
1020 fs_dprintk (FS_DEBUG_OPEN, "TX config record:\n");
1021 my_hd (tc, sizeof (*tc));
1022 }
1023
1024 /* We now use the "submit_command" function to submit commands to
1025 the firestream. There is a define up near the definition of
1026 that routine that switches this routine between immediate write
1027 to the immediate comamnd registers and queuing the commands in
1028 the HPTXQ for execution. This last technique might be more
1029 efficient if we know we're going to submit a whole lot of
1030 commands in one go, but this driver is not setup to be able to
1031 use such a construct. So it probably doen't matter much right
1032 now. -- REW */
1033
1034 /* The command is IMMediate and INQueue. The parameters are out-of-line.. */
1035 submit_command (dev, &dev->hp_txq,
1036 QE_CMD_CONFIG_TX | QE_CMD_IMM_INQ | vcc->channo,
1037 virt_to_bus (tc), 0, 0);
1038
1039 submit_command (dev, &dev->hp_txq,
1040 QE_CMD_TX_EN | QE_CMD_IMM_INQ | vcc->channo,
1041 0, 0, 0);
1042 set_bit (vcc->channo, dev->tx_inuse);
1043 }
1044
1045 if (DO_DIRECTION (rxtp)) {
1046 dev->atm_vccs[vcc->channo] = atm_vcc;
1047
1048 for (bfp = 0;bfp < FS_NR_FREE_POOLS; bfp++)
1049 if (atm_vcc->qos.rxtp.max_sdu <= dev->rx_fp[bfp].bufsize) break;
1050 if (bfp >= FS_NR_FREE_POOLS) {
1051 fs_dprintk (FS_DEBUG_OPEN, "No free pool fits sdu: %d.\n",
1052 atm_vcc->qos.rxtp.max_sdu);
1053 /* XXX Cleanup? -- Would just calling fs_close work??? -- REW */
1054
1055 /* XXX clear tx inuse. Close TX part? */
1056 dev->atm_vccs[vcc->channo] = NULL;
1057 kfree (vcc);
1058 return -EINVAL;
1059 }
1060
1061 switch (atm_vcc->qos.aal) {
1062 case ATM_AAL0:
1063 case ATM_AAL2:
1064 submit_command (dev, &dev->hp_txq,
1065 QE_CMD_CONFIG_RX | QE_CMD_IMM_INQ | vcc->channo,
1066 RC_FLAGS_TRANSP |
1067 RC_FLAGS_BFPS_BFP * bfp |
1068 RC_FLAGS_RXBM_PSB, 0, 0);
1069 break;
1070 case ATM_AAL5:
1071 submit_command (dev, &dev->hp_txq,
1072 QE_CMD_CONFIG_RX | QE_CMD_IMM_INQ | vcc->channo,
1073 RC_FLAGS_AAL5 |
1074 RC_FLAGS_BFPS_BFP * bfp |
1075 RC_FLAGS_RXBM_PSB, 0, 0);
1076 break;
1077 };
1078 if (IS_FS50 (dev)) {
1079 submit_command (dev, &dev->hp_txq,
1080 QE_CMD_REG_WR | QE_CMD_IMM_INQ,
1081 0x80 + vcc->channo,
1082 (vpi << 16) | vci, 0 ); /* XXX -- Use defines. */
1083 }
1084 submit_command (dev, &dev->hp_txq,
1085 QE_CMD_RX_EN | QE_CMD_IMM_INQ | vcc->channo,
1086 0, 0, 0);
1087 }
1088
1089 /* Indicate we're done! */
1090 set_bit(ATM_VF_READY, &atm_vcc->flags);
1091
1092 func_exit ();
1093 return 0;
1094 }
1095
1096
1097 static void fs_close(struct atm_vcc *atm_vcc)
1098 {
1099 struct fs_dev *dev = FS_DEV (atm_vcc->dev);
1100 struct fs_vcc *vcc = FS_VCC (atm_vcc);
1101 struct atm_trafprm * txtp;
1102 struct atm_trafprm * rxtp;
1103
1104 func_enter ();
1105
1106 clear_bit(ATM_VF_READY, &atm_vcc->flags);
1107
1108 fs_dprintk (FS_DEBUG_QSIZE, "--==**[%d]**==--", dev->ntxpckts);
1109 if (vcc->last_skb) {
1110 fs_dprintk (FS_DEBUG_QUEUE, "Waiting for skb %p to be sent.\n",
1111 vcc->last_skb);
1112 /* We're going to wait for the last packet to get sent on this VC. It would
1113 be impolite not to send them don't you think?
1114 XXX
1115 We don't know which packets didn't get sent. So if we get interrupted in
1116 this sleep_on, we'll lose any reference to these packets. Memory leak!
1117 On the other hand, it's awfully convenient that we can abort a "close" that
1118 is taking too long. Maybe just use non-interruptible sleep on? -- REW */
1119 interruptible_sleep_on (& vcc->close_wait);
1120 }
1121
1122 txtp = &atm_vcc->qos.txtp;
1123 rxtp = &atm_vcc->qos.rxtp;
1124
1125
1126 /* See App note XXX (Unpublished as of now) for the reason for the
1127 removal of the "CMD_IMM_INQ" part of the TX_PURGE_INH... -- REW */
1128
1129 if (DO_DIRECTION (txtp)) {
1130 submit_command (dev, &dev->hp_txq,
1131 QE_CMD_TX_PURGE_INH | /*QE_CMD_IMM_INQ|*/ vcc->channo, 0,0,0);
1132 clear_bit (vcc->channo, dev->tx_inuse);
1133 }
1134
1135 if (DO_DIRECTION (rxtp)) {
1136 submit_command (dev, &dev->hp_txq,
1137 QE_CMD_RX_PURGE_INH | QE_CMD_IMM_INQ | vcc->channo, 0,0,0);
1138 dev->atm_vccs [vcc->channo] = NULL;
1139
1140 /* This means that this is configured as a receive channel */
1141 if (IS_FS50 (dev)) {
1142 /* Disable the receive filter. Is 0/0 indeed an invalid receive
1143 channel? -- REW. Yes it is. -- Hang. Ok. I'll use -1
1144 (0xfff...) -- REW */
1145 submit_command (dev, &dev->hp_txq,
1146 QE_CMD_REG_WR | QE_CMD_IMM_INQ,
1147 0x80 + vcc->channo, -1, 0 );
1148 }
1149 }
1150
1151 fs_dprintk (FS_DEBUG_ALLOC, "Free vcc: %p\n", vcc);
1152 kfree (vcc);
1153
1154 func_exit ();
1155 }
1156
1157
1158 static int fs_send (struct atm_vcc *atm_vcc, struct sk_buff *skb)
1159 {
1160 struct fs_dev *dev = FS_DEV (atm_vcc->dev);
1161 struct fs_vcc *vcc = FS_VCC (atm_vcc);
1162 struct FS_BPENTRY *td;
1163
1164 func_enter ();
1165
1166 fs_dprintk (FS_DEBUG_TXMEM, "I");
1167 fs_dprintk (FS_DEBUG_SEND, "Send: atm_vcc %p skb %p vcc %p dev %p\n",
1168 atm_vcc, skb, vcc, dev);
1169
1170 fs_dprintk (FS_DEBUG_ALLOC, "Alloc t-skb: %p (atm_send)\n", skb);
1171
1172 ATM_SKB(skb)->vcc = atm_vcc;
1173
1174 vcc->last_skb = skb;
1175
1176 td = kmalloc (sizeof (struct FS_BPENTRY), GFP_ATOMIC);
1177 fs_dprintk (FS_DEBUG_ALLOC, "Alloc transd: %p(%Zd)\n", td, sizeof (struct FS_BPENTRY));
1178 if (!td) {
1179 /* Oops out of mem */
1180 return -ENOMEM;
1181 }
1182
1183 fs_dprintk (FS_DEBUG_SEND, "first word in buffer: %x\n",
1184 *(int *) skb->data);
1185
1186 td->flags = TD_EPI | TD_DATA | skb->len;
1187 td->next = 0;
1188 td->bsa = virt_to_bus (skb->data);
1189 td->skb = skb;
1190 td->dev = dev;
1191 dev->ntxpckts++;
1192
1193 #ifdef DEBUG_EXTRA
1194 da[qd] = td;
1195 dq[qd].flags = td->flags;
1196 dq[qd].next = td->next;
1197 dq[qd].bsa = td->bsa;
1198 dq[qd].skb = td->skb;
1199 dq[qd].dev = td->dev;
1200 qd++;
1201 if (qd >= 60) qd = 0;
1202 #endif
1203
1204 submit_queue (dev, &dev->hp_txq,
1205 QE_TRANSMIT_DE | vcc->channo,
1206 virt_to_bus (td), 0,
1207 virt_to_bus (td));
1208
1209 fs_dprintk (FS_DEBUG_QUEUE, "in send: txq %d txrq %d\n",
1210 read_fs (dev, Q_EA (dev->hp_txq.offset)) -
1211 read_fs (dev, Q_SA (dev->hp_txq.offset)),
1212 read_fs (dev, Q_EA (dev->tx_relq.offset)) -
1213 read_fs (dev, Q_SA (dev->tx_relq.offset)));
1214
1215 func_exit ();
1216 return 0;
1217 }
1218
1219
1220 /* Some function placeholders for functions we don't yet support. */
1221
1222 #if 0
1223 static int fs_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
1224 {
1225 func_enter ();
1226 func_exit ();
1227 return -ENOIOCTLCMD;
1228 }
1229
1230
1231 static int fs_getsockopt(struct atm_vcc *vcc,int level,int optname,
1232 void __user *optval,int optlen)
1233 {
1234 func_enter ();
1235 func_exit ();
1236 return 0;
1237 }
1238
1239
1240 static int fs_setsockopt(struct atm_vcc *vcc,int level,int optname,
1241 void __user *optval,int optlen)
1242 {
1243 func_enter ();
1244 func_exit ();
1245 return 0;
1246 }
1247
1248
1249 static void fs_phy_put(struct atm_dev *dev,unsigned char value,
1250 unsigned long addr)
1251 {
1252 func_enter ();
1253 func_exit ();
1254 }
1255
1256
1257 static unsigned char fs_phy_get(struct atm_dev *dev,unsigned long addr)
1258 {
1259 func_enter ();
1260 func_exit ();
1261 return 0;
1262 }
1263
1264
1265 static int fs_change_qos(struct atm_vcc *vcc,struct atm_qos *qos,int flags)
1266 {
1267 func_enter ();
1268 func_exit ();
1269 return 0;
1270 };
1271
1272 #endif
1273
1274
1275 static const struct atmdev_ops ops = {
1276 .open = fs_open,
1277 .close = fs_close,
1278 .send = fs_send,
1279 .owner = THIS_MODULE,
1280 /* ioctl: fs_ioctl, */
1281 /* getsockopt: fs_getsockopt, */
1282 /* setsockopt: fs_setsockopt, */
1283 /* change_qos: fs_change_qos, */
1284
1285 /* For now implement these internally here... */
1286 /* phy_put: fs_phy_put, */
1287 /* phy_get: fs_phy_get, */
1288 };
1289
1290
1291 static void __devinit undocumented_pci_fix (struct pci_dev *pdev)
1292 {
1293 int tint;
1294
1295 /* The Windows driver says: */
1296 /* Switch off FireStream Retry Limit Threshold
1297 */
1298
1299 /* The register at 0x28 is documented as "reserved", no further
1300 comments. */
1301
1302 pci_read_config_dword (pdev, 0x28, &tint);
1303 if (tint != 0x80) {
1304 tint = 0x80;
1305 pci_write_config_dword (pdev, 0x28, tint);
1306 }
1307 }
1308
1309
1310
1311 /**************************************************************************
1312 * PHY routines *
1313 **************************************************************************/
1314
1315 static void __devinit write_phy (struct fs_dev *dev, int regnum, int val)
1316 {
1317 submit_command (dev, &dev->hp_txq, QE_CMD_PRP_WR | QE_CMD_IMM_INQ,
1318 regnum, val, 0);
1319 }
1320
1321 static int __devinit init_phy (struct fs_dev *dev, struct reginit_item *reginit)
1322 {
1323 int i;
1324
1325 func_enter ();
1326 while (reginit->reg != PHY_EOF) {
1327 if (reginit->reg == PHY_CLEARALL) {
1328 /* "PHY_CLEARALL means clear all registers. Numregisters is in "val". */
1329 for (i=0;i<reginit->val;i++) {
1330 write_phy (dev, i, 0);
1331 }
1332 } else {
1333 write_phy (dev, reginit->reg, reginit->val);
1334 }
1335 reginit++;
1336 }
1337 func_exit ();
1338 return 0;
1339 }
1340
1341 static void reset_chip (struct fs_dev *dev)
1342 {
1343 int i;
1344
1345 write_fs (dev, SARMODE0, SARMODE0_SRTS0);
1346
1347 /* Undocumented delay */
1348 udelay (128);
1349
1350 /* The "internal registers are documented to all reset to zero, but
1351 comments & code in the Windows driver indicates that the pools are
1352 NOT reset. */
1353 for (i=0;i < FS_NR_FREE_POOLS;i++) {
1354 write_fs (dev, FP_CNF (RXB_FP(i)), 0);
1355 write_fs (dev, FP_SA (RXB_FP(i)), 0);
1356 write_fs (dev, FP_EA (RXB_FP(i)), 0);
1357 write_fs (dev, FP_CNT (RXB_FP(i)), 0);
1358 write_fs (dev, FP_CTU (RXB_FP(i)), 0);
1359 }
1360
1361 /* The same goes for the match channel registers, although those are
1362 NOT documented that way in the Windows driver. -- REW */
1363 /* The Windows driver DOES write 0 to these registers somewhere in
1364 the init sequence. However, a small hardware-feature, will
1365 prevent reception of data on VPI/VCI = 0/0 (Unless the channel
1366 allocated happens to have no disabled channels that have a lower
1367 number. -- REW */
1368
1369 /* Clear the match channel registers. */
1370 if (IS_FS50 (dev)) {
1371 for (i=0;i<FS50_NR_CHANNELS;i++) {
1372 write_fs (dev, 0x200 + i * 4, -1);
1373 }
1374 }
1375 }
1376
1377 static void __devinit *aligned_kmalloc (int size, unsigned int __nocast flags,
1378 int alignment)
1379 {
1380 void *t;
1381
1382 if (alignment <= 0x10) {
1383 t = kmalloc (size, flags);
1384 if ((unsigned long)t & (alignment-1)) {
1385 printk ("Kmalloc doesn't align things correctly! %p\n", t);
1386 kfree (t);
1387 return aligned_kmalloc (size, flags, alignment * 4);
1388 }
1389 return t;
1390 }
1391 printk (KERN_ERR "Request for > 0x10 alignment not yet implemented (hard!)\n");
1392 return NULL;
1393 }
1394
1395 static int __devinit init_q (struct fs_dev *dev,
1396 struct queue *txq, int queue, int nentries, int is_rq)
1397 {
1398 int sz = nentries * sizeof (struct FS_QENTRY);
1399 struct FS_QENTRY *p;
1400
1401 func_enter ();
1402
1403 fs_dprintk (FS_DEBUG_INIT, "Inititing queue at %x: %d entries:\n",
1404 queue, nentries);
1405
1406 p = aligned_kmalloc (sz, GFP_KERNEL, 0x10);
1407 fs_dprintk (FS_DEBUG_ALLOC, "Alloc queue: %p(%d)\n", p, sz);
1408
1409 if (!p) return 0;
1410
1411 write_fs (dev, Q_SA(queue), virt_to_bus(p));
1412 write_fs (dev, Q_EA(queue), virt_to_bus(p+nentries-1));
1413 write_fs (dev, Q_WP(queue), virt_to_bus(p));
1414 write_fs (dev, Q_RP(queue), virt_to_bus(p));
1415 if (is_rq) {
1416 /* Configuration for the receive queue: 0: interrupt immediately,
1417 no pre-warning to empty queues: We do our best to keep the
1418 queue filled anyway. */
1419 write_fs (dev, Q_CNF(queue), 0 );
1420 }
1421
1422 txq->sa = p;
1423 txq->ea = p;
1424 txq->offset = queue;
1425
1426 func_exit ();
1427 return 1;
1428 }
1429
1430
1431 static int __devinit init_fp (struct fs_dev *dev,
1432 struct freepool *fp, int queue, int bufsize, int nr_buffers)
1433 {
1434 func_enter ();
1435
1436 fs_dprintk (FS_DEBUG_INIT, "Inititing free pool at %x:\n", queue);
1437
1438 write_fs (dev, FP_CNF(queue), (bufsize * RBFP_RBS) | RBFP_RBSVAL | RBFP_CME);
1439 write_fs (dev, FP_SA(queue), 0);
1440 write_fs (dev, FP_EA(queue), 0);
1441 write_fs (dev, FP_CTU(queue), 0);
1442 write_fs (dev, FP_CNT(queue), 0);
1443
1444 fp->offset = queue;
1445 fp->bufsize = bufsize;
1446 fp->nr_buffers = nr_buffers;
1447
1448 func_exit ();
1449 return 1;
1450 }
1451
1452
1453 static inline int nr_buffers_in_freepool (struct fs_dev *dev, struct freepool *fp)
1454 {
1455 #if 0
1456 /* This seems to be unreliable.... */
1457 return read_fs (dev, FP_CNT (fp->offset));
1458 #else
1459 return fp->n;
1460 #endif
1461 }
1462
1463
1464 /* Check if this gets going again if a pool ever runs out. -- Yes, it
1465 does. I've seen "receive abort: no buffers" and things started
1466 working again after that... -- REW */
1467
1468 static void top_off_fp (struct fs_dev *dev, struct freepool *fp,
1469 unsigned int __nocast gfp_flags)
1470 {
1471 struct FS_BPENTRY *qe, *ne;
1472 struct sk_buff *skb;
1473 int n = 0;
1474
1475 fs_dprintk (FS_DEBUG_QUEUE, "Topping off queue at %x (%d-%d/%d)\n",
1476 fp->offset, read_fs (dev, FP_CNT (fp->offset)), fp->n,
1477 fp->nr_buffers);
1478 while (nr_buffers_in_freepool(dev, fp) < fp->nr_buffers) {
1479
1480 skb = alloc_skb (fp->bufsize, gfp_flags);
1481 fs_dprintk (FS_DEBUG_ALLOC, "Alloc rec-skb: %p(%d)\n", skb, fp->bufsize);
1482 if (!skb) break;
1483 ne = kmalloc (sizeof (struct FS_BPENTRY), gfp_flags);
1484 fs_dprintk (FS_DEBUG_ALLOC, "Alloc rec-d: %p(%Zd)\n", ne, sizeof (struct FS_BPENTRY));
1485 if (!ne) {
1486 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p\n", skb);
1487 dev_kfree_skb_any (skb);
1488 break;
1489 }
1490
1491 fs_dprintk (FS_DEBUG_QUEUE, "Adding skb %p desc %p -> %p(%p) ",
1492 skb, ne, skb->data, skb->head);
1493 n++;
1494 ne->flags = FP_FLAGS_EPI | fp->bufsize;
1495 ne->next = virt_to_bus (NULL);
1496 ne->bsa = virt_to_bus (skb->data);
1497 ne->aal_bufsize = fp->bufsize;
1498 ne->skb = skb;
1499 ne->fp = fp;
1500
1501 qe = (struct FS_BPENTRY *) (read_fs (dev, FP_EA(fp->offset)));
1502 fs_dprintk (FS_DEBUG_QUEUE, "link at %p\n", qe);
1503 if (qe) {
1504 qe = bus_to_virt ((long) qe);
1505 qe->next = virt_to_bus(ne);
1506 qe->flags &= ~FP_FLAGS_EPI;
1507 } else
1508 write_fs (dev, FP_SA(fp->offset), virt_to_bus(ne));
1509
1510 write_fs (dev, FP_EA(fp->offset), virt_to_bus (ne));
1511 fp->n++; /* XXX Atomic_inc? */
1512 write_fs (dev, FP_CTU(fp->offset), 1);
1513 }
1514
1515 fs_dprintk (FS_DEBUG_QUEUE, "Added %d entries. \n", n);
1516 }
1517
1518 static void __devexit free_queue (struct fs_dev *dev, struct queue *txq)
1519 {
1520 func_enter ();
1521
1522 write_fs (dev, Q_SA(txq->offset), 0);
1523 write_fs (dev, Q_EA(txq->offset), 0);
1524 write_fs (dev, Q_RP(txq->offset), 0);
1525 write_fs (dev, Q_WP(txq->offset), 0);
1526 /* Configuration ? */
1527
1528 fs_dprintk (FS_DEBUG_ALLOC, "Free queue: %p\n", txq->sa);
1529 kfree (txq->sa);
1530
1531 func_exit ();
1532 }
1533
1534 static void __devexit free_freepool (struct fs_dev *dev, struct freepool *fp)
1535 {
1536 func_enter ();
1537
1538 write_fs (dev, FP_CNF(fp->offset), 0);
1539 write_fs (dev, FP_SA (fp->offset), 0);
1540 write_fs (dev, FP_EA (fp->offset), 0);
1541 write_fs (dev, FP_CNT(fp->offset), 0);
1542 write_fs (dev, FP_CTU(fp->offset), 0);
1543
1544 func_exit ();
1545 }
1546
1547
1548
1549 static irqreturn_t fs_irq (int irq, void *dev_id, struct pt_regs * pt_regs)
1550 {
1551 int i;
1552 u32 status;
1553 struct fs_dev *dev = dev_id;
1554
1555 status = read_fs (dev, ISR);
1556 if (!status)
1557 return IRQ_NONE;
1558
1559 func_enter ();
1560
1561 #ifdef IRQ_RATE_LIMIT
1562 /* Aaargh! I'm ashamed. This costs more lines-of-code than the actual
1563 interrupt routine!. (Well, used to when I wrote that comment) -- REW */
1564 {
1565 static int lastjif;
1566 static int nintr=0;
1567
1568 if (lastjif == jiffies) {
1569 if (++nintr > IRQ_RATE_LIMIT) {
1570 free_irq (dev->irq, dev_id);
1571 printk (KERN_ERR "fs: Too many interrupts. Turning off interrupt %d.\n",
1572 dev->irq);
1573 }
1574 } else {
1575 lastjif = jiffies;
1576 nintr = 0;
1577 }
1578 }
1579 #endif
1580 fs_dprintk (FS_DEBUG_QUEUE, "in intr: txq %d txrq %d\n",
1581 read_fs (dev, Q_EA (dev->hp_txq.offset)) -
1582 read_fs (dev, Q_SA (dev->hp_txq.offset)),
1583 read_fs (dev, Q_EA (dev->tx_relq.offset)) -
1584 read_fs (dev, Q_SA (dev->tx_relq.offset)));
1585
1586 /* print the bits in the ISR register. */
1587 if (fs_debug & FS_DEBUG_IRQ) {
1588 /* The FS_DEBUG things are unneccesary here. But this way it is
1589 clear for grep that these are debug prints. */
1590 fs_dprintk (FS_DEBUG_IRQ, "IRQ status:");
1591 for (i=0;i<27;i++)
1592 if (status & (1 << i))
1593 fs_dprintk (FS_DEBUG_IRQ, " %s", irq_bitname[i]);
1594 fs_dprintk (FS_DEBUG_IRQ, "\n");
1595 }
1596
1597 if (status & ISR_RBRQ0_W) {
1598 fs_dprintk (FS_DEBUG_IRQ, "Iiiin-coming (0)!!!!\n");
1599 process_incoming (dev, &dev->rx_rq[0]);
1600 /* items mentioned on RBRQ0 are from FP 0 or 1. */
1601 top_off_fp (dev, &dev->rx_fp[0], GFP_ATOMIC);
1602 top_off_fp (dev, &dev->rx_fp[1], GFP_ATOMIC);
1603 }
1604
1605 if (status & ISR_RBRQ1_W) {
1606 fs_dprintk (FS_DEBUG_IRQ, "Iiiin-coming (1)!!!!\n");
1607 process_incoming (dev, &dev->rx_rq[1]);
1608 top_off_fp (dev, &dev->rx_fp[2], GFP_ATOMIC);
1609 top_off_fp (dev, &dev->rx_fp[3], GFP_ATOMIC);
1610 }
1611
1612 if (status & ISR_RBRQ2_W) {
1613 fs_dprintk (FS_DEBUG_IRQ, "Iiiin-coming (2)!!!!\n");
1614 process_incoming (dev, &dev->rx_rq[2]);
1615 top_off_fp (dev, &dev->rx_fp[4], GFP_ATOMIC);
1616 top_off_fp (dev, &dev->rx_fp[5], GFP_ATOMIC);
1617 }
1618
1619 if (status & ISR_RBRQ3_W) {
1620 fs_dprintk (FS_DEBUG_IRQ, "Iiiin-coming (3)!!!!\n");
1621 process_incoming (dev, &dev->rx_rq[3]);
1622 top_off_fp (dev, &dev->rx_fp[6], GFP_ATOMIC);
1623 top_off_fp (dev, &dev->rx_fp[7], GFP_ATOMIC);
1624 }
1625
1626 if (status & ISR_CSQ_W) {
1627 fs_dprintk (FS_DEBUG_IRQ, "Command executed ok!\n");
1628 process_return_queue (dev, &dev->st_q);
1629 }
1630
1631 if (status & ISR_TBRQ_W) {
1632 fs_dprintk (FS_DEBUG_IRQ, "Data tramsitted!\n");
1633 process_txdone_queue (dev, &dev->tx_relq);
1634 }
1635
1636 func_exit ();
1637 return IRQ_HANDLED;
1638 }
1639
1640
1641 #ifdef FS_POLL_FREQ
1642 static void fs_poll (unsigned long data)
1643 {
1644 struct fs_dev *dev = (struct fs_dev *) data;
1645
1646 fs_irq (0, dev, NULL);
1647 dev->timer.expires = jiffies + FS_POLL_FREQ;
1648 add_timer (&dev->timer);
1649 }
1650 #endif
1651
1652 static int __devinit fs_init (struct fs_dev *dev)
1653 {
1654 struct pci_dev *pci_dev;
1655 int isr, to;
1656 int i;
1657
1658 func_enter ();
1659 pci_dev = dev->pci_dev;
1660
1661 printk (KERN_INFO "found a FireStream %d card, base %08lx, irq%d.\n",
1662 IS_FS50(dev)?50:155,
1663 pci_resource_start(pci_dev, 0), dev->pci_dev->irq);
1664
1665 if (fs_debug & FS_DEBUG_INIT)
1666 my_hd ((unsigned char *) dev, sizeof (*dev));
1667
1668 undocumented_pci_fix (pci_dev);
1669
1670 dev->hw_base = pci_resource_start(pci_dev, 0);
1671
1672 dev->base = ioremap(dev->hw_base, 0x1000);
1673
1674 reset_chip (dev);
1675
1676 write_fs (dev, SARMODE0, 0
1677 | (0 * SARMODE0_SHADEN) /* We don't use shadow registers. */
1678 | (1 * SARMODE0_INTMODE_READCLEAR)
1679 | (1 * SARMODE0_CWRE)
1680 | IS_FS50(dev)?SARMODE0_PRPWT_FS50_5:
1681 SARMODE0_PRPWT_FS155_3
1682 | (1 * SARMODE0_CALSUP_1)
1683 | IS_FS50 (dev)?(0
1684 | SARMODE0_RXVCS_32
1685 | SARMODE0_ABRVCS_32
1686 | SARMODE0_TXVCS_32):
1687 (0
1688 | SARMODE0_RXVCS_1k
1689 | SARMODE0_ABRVCS_1k
1690 | SARMODE0_TXVCS_1k));
1691
1692 /* 10ms * 100 is 1 second. That should be enough, as AN3:9 says it takes
1693 1ms. */
1694 to = 100;
1695 while (--to) {
1696 isr = read_fs (dev, ISR);
1697
1698 /* This bit is documented as "RESERVED" */
1699 if (isr & ISR_INIT_ERR) {
1700 printk (KERN_ERR "Error initializing the FS... \n");
1701 return 1;
1702 }
1703 if (isr & ISR_INIT) {
1704 fs_dprintk (FS_DEBUG_INIT, "Ha! Initialized OK!\n");
1705 break;
1706 }
1707
1708 /* Try again after 10ms. */
1709 msleep(10);
1710 }
1711
1712 if (!to) {
1713 printk (KERN_ERR "timeout initializing the FS... \n");
1714 return 1;
1715 }
1716
1717 /* XXX fix for fs155 */
1718 dev->channel_mask = 0x1f;
1719 dev->channo = 0;
1720
1721 /* AN3: 10 */
1722 write_fs (dev, SARMODE1, 0
1723 | (fs_keystream * SARMODE1_DEFHEC) /* XXX PHY */
1724 | ((loopback == 1) * SARMODE1_TSTLP) /* XXX Loopback mode enable... */
1725 | (1 * SARMODE1_DCRM)
1726 | (1 * SARMODE1_DCOAM)
1727 | (0 * SARMODE1_OAMCRC)
1728 | (0 * SARMODE1_DUMPE)
1729 | (0 * SARMODE1_GPLEN)
1730 | (0 * SARMODE1_GNAM)
1731 | (0 * SARMODE1_GVAS)
1732 | (0 * SARMODE1_GPAS)
1733 | (1 * SARMODE1_GPRI)
1734 | (0 * SARMODE1_PMS)
1735 | (0 * SARMODE1_GFCR)
1736 | (1 * SARMODE1_HECM2)
1737 | (1 * SARMODE1_HECM1)
1738 | (1 * SARMODE1_HECM0)
1739 | (1 << 12) /* That's what hang's driver does. Program to 0 */
1740 | (0 * 0xff) /* XXX FS155 */);
1741
1742
1743 /* Cal prescale etc */
1744
1745 /* AN3: 11 */
1746 write_fs (dev, TMCONF, 0x0000000f);
1747 write_fs (dev, CALPRESCALE, 0x01010101 * num);
1748 write_fs (dev, 0x80, 0x000F00E4);
1749
1750 /* AN3: 12 */
1751 write_fs (dev, CELLOSCONF, 0
1752 | ( 0 * CELLOSCONF_CEN)
1753 | ( CELLOSCONF_SC1)
1754 | (0x80 * CELLOSCONF_COBS)
1755 | (num * CELLOSCONF_COPK) /* Changed from 0xff to 0x5a */
1756 | (num * CELLOSCONF_COST));/* after a hint from Hang.
1757 * performance jumped 50->70... */
1758
1759 /* Magic value by Hang */
1760 write_fs (dev, CELLOSCONF_COST, 0x0B809191);
1761
1762 if (IS_FS50 (dev)) {
1763 write_fs (dev, RAS0, RAS0_DCD_XHLT);
1764 dev->atm_dev->ci_range.vpi_bits = 12;
1765 dev->atm_dev->ci_range.vci_bits = 16;
1766 dev->nchannels = FS50_NR_CHANNELS;
1767 } else {
1768 write_fs (dev, RAS0, RAS0_DCD_XHLT
1769 | (((1 << FS155_VPI_BITS) - 1) * RAS0_VPSEL)
1770 | (((1 << FS155_VCI_BITS) - 1) * RAS0_VCSEL));
1771 /* We can chose the split arbitarily. We might be able to
1772 support more. Whatever. This should do for now. */
1773 dev->atm_dev->ci_range.vpi_bits = FS155_VPI_BITS;
1774 dev->atm_dev->ci_range.vci_bits = FS155_VCI_BITS;
1775
1776 /* Address bits we can't use should be compared to 0. */
1777 write_fs (dev, RAC, 0);
1778
1779 /* Manual (AN9, page 6) says ASF1=0 means compare Utopia address
1780 * too. I can't find ASF1 anywhere. Anyway, we AND with just the
1781 * other bits, then compare with 0, which is exactly what we
1782 * want. */
1783 write_fs (dev, RAM, (1 << (28 - FS155_VPI_BITS - FS155_VCI_BITS)) - 1);
1784 dev->nchannels = FS155_NR_CHANNELS;
1785 }
1786 dev->atm_vccs = kmalloc (dev->nchannels * sizeof (struct atm_vcc *),
1787 GFP_KERNEL);
1788 fs_dprintk (FS_DEBUG_ALLOC, "Alloc atmvccs: %p(%Zd)\n",
1789 dev->atm_vccs, dev->nchannels * sizeof (struct atm_vcc *));
1790
1791 if (!dev->atm_vccs) {
1792 printk (KERN_WARNING "Couldn't allocate memory for VCC buffers. Woops!\n");
1793 /* XXX Clean up..... */
1794 return 1;
1795 }
1796 memset (dev->atm_vccs, 0, dev->nchannels * sizeof (struct atm_vcc *));
1797
1798 dev->tx_inuse = kmalloc (dev->nchannels / 8 /* bits/byte */ , GFP_KERNEL);
1799 fs_dprintk (FS_DEBUG_ALLOC, "Alloc tx_inuse: %p(%d)\n",
1800 dev->atm_vccs, dev->nchannels / 8);
1801
1802 if (!dev->tx_inuse) {
1803 printk (KERN_WARNING "Couldn't allocate memory for tx_inuse bits!\n");
1804 /* XXX Clean up..... */
1805 return 1;
1806 }
1807 memset (dev->tx_inuse, 0, dev->nchannels / 8);
1808
1809 /* -- RAS1 : FS155 and 50 differ. Default (0) should be OK for both */
1810 /* -- RAS2 : FS50 only: Default is OK. */
1811
1812 /* DMAMODE, default should be OK. -- REW */
1813 write_fs (dev, DMAMR, DMAMR_TX_MODE_FULL);
1814
1815 init_q (dev, &dev->hp_txq, TX_PQ(TXQ_HP), TXQ_NENTRIES, 0);
1816 init_q (dev, &dev->lp_txq, TX_PQ(TXQ_LP), TXQ_NENTRIES, 0);
1817 init_q (dev, &dev->tx_relq, TXB_RQ, TXQ_NENTRIES, 1);
1818 init_q (dev, &dev->st_q, ST_Q, TXQ_NENTRIES, 1);
1819
1820 for (i=0;i < FS_NR_FREE_POOLS;i++) {
1821 init_fp (dev, &dev->rx_fp[i], RXB_FP(i),
1822 rx_buf_sizes[i], rx_pool_sizes[i]);
1823 top_off_fp (dev, &dev->rx_fp[i], GFP_KERNEL);
1824 }
1825
1826
1827 for (i=0;i < FS_NR_RX_QUEUES;i++)
1828 init_q (dev, &dev->rx_rq[i], RXB_RQ(i), RXRQ_NENTRIES, 1);
1829
1830 dev->irq = pci_dev->irq;
1831 if (request_irq (dev->irq, fs_irq, SA_SHIRQ, "firestream", dev)) {
1832 printk (KERN_WARNING "couldn't get irq %d for firestream.\n", pci_dev->irq);
1833 /* XXX undo all previous stuff... */
1834 return 1;
1835 }
1836 fs_dprintk (FS_DEBUG_INIT, "Grabbed irq %d for dev at %p.\n", dev->irq, dev);
1837
1838 /* We want to be notified of most things. Just the statistics count
1839 overflows are not interesting */
1840 write_fs (dev, IMR, 0
1841 | ISR_RBRQ0_W
1842 | ISR_RBRQ1_W
1843 | ISR_RBRQ2_W
1844 | ISR_RBRQ3_W
1845 | ISR_TBRQ_W
1846 | ISR_CSQ_W);
1847
1848 write_fs (dev, SARMODE0, 0
1849 | (0 * SARMODE0_SHADEN) /* We don't use shadow registers. */
1850 | (1 * SARMODE0_GINT)
1851 | (1 * SARMODE0_INTMODE_READCLEAR)
1852 | (0 * SARMODE0_CWRE)
1853 | (IS_FS50(dev)?SARMODE0_PRPWT_FS50_5:
1854 SARMODE0_PRPWT_FS155_3)
1855 | (1 * SARMODE0_CALSUP_1)
1856 | (IS_FS50 (dev)?(0
1857 | SARMODE0_RXVCS_32
1858 | SARMODE0_ABRVCS_32
1859 | SARMODE0_TXVCS_32):
1860 (0
1861 | SARMODE0_RXVCS_1k
1862 | SARMODE0_ABRVCS_1k
1863 | SARMODE0_TXVCS_1k))
1864 | (1 * SARMODE0_RUN));
1865
1866 init_phy (dev, PHY_NTC_INIT);
1867
1868 if (loopback == 2) {
1869 write_phy (dev, 0x39, 0x000e);
1870 }
1871
1872 #ifdef FS_POLL_FREQ
1873 init_timer (&dev->timer);
1874 dev->timer.data = (unsigned long) dev;
1875 dev->timer.function = fs_poll;
1876 dev->timer.expires = jiffies + FS_POLL_FREQ;
1877 add_timer (&dev->timer);
1878 #endif
1879
1880 dev->atm_dev->dev_data = dev;
1881
1882 func_exit ();
1883 return 0;
1884 }
1885
1886 static int __devinit firestream_init_one (struct pci_dev *pci_dev,
1887 const struct pci_device_id *ent)
1888 {
1889 struct atm_dev *atm_dev;
1890 struct fs_dev *fs_dev;
1891
1892 if (pci_enable_device(pci_dev))
1893 goto err_out;
1894
1895 fs_dev = kmalloc (sizeof (struct fs_dev), GFP_KERNEL);
1896 fs_dprintk (FS_DEBUG_ALLOC, "Alloc fs-dev: %p(%Zd)\n",
1897 fs_dev, sizeof (struct fs_dev));
1898 if (!fs_dev)
1899 goto err_out;
1900
1901 memset (fs_dev, 0, sizeof (struct fs_dev));
1902
1903 atm_dev = atm_dev_register("fs", &ops, -1, NULL);
1904 if (!atm_dev)
1905 goto err_out_free_fs_dev;
1906
1907 fs_dev->pci_dev = pci_dev;
1908 fs_dev->atm_dev = atm_dev;
1909 fs_dev->flags = ent->driver_data;
1910
1911 if (fs_init(fs_dev))
1912 goto err_out_free_atm_dev;
1913
1914 fs_dev->next = fs_boards;
1915 fs_boards = fs_dev;
1916 return 0;
1917
1918 err_out_free_atm_dev:
1919 atm_dev_deregister(atm_dev);
1920 err_out_free_fs_dev:
1921 kfree(fs_dev);
1922 err_out:
1923 return -ENODEV;
1924 }
1925
1926 static void __devexit firestream_remove_one (struct pci_dev *pdev)
1927 {
1928 int i;
1929 struct fs_dev *dev, *nxtdev;
1930 struct fs_vcc *vcc;
1931 struct FS_BPENTRY *fp, *nxt;
1932
1933 func_enter ();
1934
1935 #if 0
1936 printk ("hptxq:\n");
1937 for (i=0;i<60;i++) {
1938 printk ("%d: %08x %08x %08x %08x \n",
1939 i, pq[qp].cmd, pq[qp].p0, pq[qp].p1, pq[qp].p2);
1940 qp++;
1941 if (qp >= 60) qp = 0;
1942 }
1943
1944 printk ("descriptors:\n");
1945 for (i=0;i<60;i++) {
1946 printk ("%d: %p: %08x %08x %p %p\n",
1947 i, da[qd], dq[qd].flags, dq[qd].bsa, dq[qd].skb, dq[qd].dev);
1948 qd++;
1949 if (qd >= 60) qd = 0;
1950 }
1951 #endif
1952
1953 for (dev = fs_boards;dev != NULL;dev=nxtdev) {
1954 fs_dprintk (FS_DEBUG_CLEANUP, "Releasing resources for dev at %p.\n", dev);
1955
1956 /* XXX Hit all the tx channels too! */
1957
1958 for (i=0;i < dev->nchannels;i++) {
1959 if (dev->atm_vccs[i]) {
1960 vcc = FS_VCC (dev->atm_vccs[i]);
1961 submit_command (dev, &dev->hp_txq,
1962 QE_CMD_TX_PURGE_INH | QE_CMD_IMM_INQ | vcc->channo, 0,0,0);
1963 submit_command (dev, &dev->hp_txq,
1964 QE_CMD_RX_PURGE_INH | QE_CMD_IMM_INQ | vcc->channo, 0,0,0);
1965
1966 }
1967 }
1968
1969 /* XXX Wait a while for the chip to release all buffers. */
1970
1971 for (i=0;i < FS_NR_FREE_POOLS;i++) {
1972 for (fp=bus_to_virt (read_fs (dev, FP_SA(dev->rx_fp[i].offset)));
1973 !(fp->flags & FP_FLAGS_EPI);fp = nxt) {
1974 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p\n", fp->skb);
1975 dev_kfree_skb_any (fp->skb);
1976 nxt = bus_to_virt (fp->next);
1977 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-d: %p\n", fp);
1978 kfree (fp);
1979 }
1980 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p\n", fp->skb);
1981 dev_kfree_skb_any (fp->skb);
1982 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-d: %p\n", fp);
1983 kfree (fp);
1984 }
1985
1986 /* Hang the chip in "reset", prevent it clobbering memory that is
1987 no longer ours. */
1988 reset_chip (dev);
1989
1990 fs_dprintk (FS_DEBUG_CLEANUP, "Freeing irq%d.\n", dev->irq);
1991 free_irq (dev->irq, dev);
1992 del_timer (&dev->timer);
1993
1994 atm_dev_deregister(dev->atm_dev);
1995 free_queue (dev, &dev->hp_txq);
1996 free_queue (dev, &dev->lp_txq);
1997 free_queue (dev, &dev->tx_relq);
1998 free_queue (dev, &dev->st_q);
1999
2000 fs_dprintk (FS_DEBUG_ALLOC, "Free atmvccs: %p\n", dev->atm_vccs);
2001 kfree (dev->atm_vccs);
2002
2003 for (i=0;i< FS_NR_FREE_POOLS;i++)
2004 free_freepool (dev, &dev->rx_fp[i]);
2005
2006 for (i=0;i < FS_NR_RX_QUEUES;i++)
2007 free_queue (dev, &dev->rx_rq[i]);
2008
2009 fs_dprintk (FS_DEBUG_ALLOC, "Free fs-dev: %p\n", dev);
2010 nxtdev = dev->next;
2011 kfree (dev);
2012 }
2013
2014 func_exit ();
2015 }
2016
2017 static struct pci_device_id firestream_pci_tbl[] = {
2018 { PCI_VENDOR_ID_FUJITSU_ME, PCI_DEVICE_ID_FUJITSU_FS50,
2019 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FS_IS50},
2020 { PCI_VENDOR_ID_FUJITSU_ME, PCI_DEVICE_ID_FUJITSU_FS155,
2021 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FS_IS155},
2022 { 0, }
2023 };
2024
2025 MODULE_DEVICE_TABLE(pci, firestream_pci_tbl);
2026
2027 static struct pci_driver firestream_driver = {
2028 .name = "firestream",
2029 .id_table = firestream_pci_tbl,
2030 .probe = firestream_init_one,
2031 .remove = __devexit_p(firestream_remove_one),
2032 };
2033
2034 static int __init firestream_init_module (void)
2035 {
2036 int error;
2037
2038 func_enter ();
2039 error = pci_register_driver(&firestream_driver);
2040 func_exit ();
2041 return error;
2042 }
2043
2044 static void __exit firestream_cleanup_module(void)
2045 {
2046 pci_unregister_driver(&firestream_driver);
2047 }
2048
2049 module_init(firestream_init_module);
2050 module_exit(firestream_cleanup_module);
2051
2052 MODULE_LICENSE("GPL");
2053
2054
2055
USB Experimental Work