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[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / irda / donauboe.c
1 /*****************************************************************
2 *
3 * Filename: donauboe.c
4 * Version: 2.17
5 * Description: Driver for the Toshiba OBOE (or type-O or 701)
6 * FIR Chipset, also supports the DONAUOBOE (type-DO
7 * or d01) FIR chipset which as far as I know is
8 * register compatible.
9 * Documentation: http://libxg.free.fr/irda/lib-irda.html
10 * Status: Experimental.
11 * Author: James McKenzie <james@fishsoup.dhs.org>
12 * Created at: Sat May 8 12:35:27 1999
13 * Modified: Paul Bristow <paul.bristow@technologist.com>
14 * Modified: Mon Nov 11 19:10:05 1999
15 * Modified: James McKenzie <james@fishsoup.dhs.org>
16 * Modified: Thu Mar 16 12:49:00 2000 (Substantial rewrite)
17 * Modified: Sat Apr 29 00:23:03 2000 (Added DONAUOBOE support)
18 * Modified: Wed May 24 23:45:02 2000 (Fixed chipio_t structure)
19 * Modified: 2.13 Christian Gennerat <christian.gennerat@polytechnique.org>
20 * Modified: 2.13 dim jan 07 21:57:39 2001 (tested with kernel 2.4 & irnet/ppp)
21 * Modified: 2.14 Christian Gennerat <christian.gennerat@polytechnique.org>
22 * Modified: 2.14 lun fev 05 17:55:59 2001 (adapted to patch-2.4.1-pre8-irda1)
23 * Modified: 2.15 Martin Lucina <mato@kotelna.sk>
24 * Modified: 2.15 Fri Jun 21 20:40:59 2002 (sync with 2.4.18, substantial fixes)
25 * Modified: 2.16 Martin Lucina <mato@kotelna.sk>
26 * Modified: 2.16 Sat Jun 22 18:54:29 2002 (fix freeregion, default to verbose)
27 * Modified: 2.17 Christian Gennerat <christian.gennerat@polytechnique.org>
28 * Modified: 2.17 jeu sep 12 08:50:20 2002 (save_flags();cli(); replaced by spinlocks)
29 * Modified: 2.18 Christian Gennerat <christian.gennerat@polytechnique.org>
30 * Modified: 2.18 ven jan 10 03:14:16 2003 Change probe default options
31 *
32 * Copyright (c) 1999 James McKenzie, All Rights Reserved.
33 *
34 * This program is free software; you can redistribute it and/or
35 * modify it under the terms of the GNU General Public License as
36 * published by the Free Software Foundation; either version 2 of
37 * the License, or (at your option) any later version.
38 *
39 * Neither James McKenzie nor Cambridge University admit liability nor
40 * provide warranty for any of this software. This material is
41 * provided "AS-IS" and at no charge.
42 *
43 * Applicable Models : Libretto 100/110CT and many more.
44 * Toshiba refers to this chip as the type-O IR port,
45 * or the type-DO IR port.
46 *
47 ********************************************************************/
48
49 /* Look at toshoboe.h (currently in include/net/irda) for details of */
50 /* Where to get documentation on the chip */
51
52 /* See below for a description of the logic in this driver */
53
54 /* User servicable parts */
55 /* USE_PROBE Create the code which probes the chip and does a few tests */
56 /* do_probe module parameter Enable this code */
57 /* Probe code is very useful for understanding how the hardware works */
58 /* Use it with various combinations of TT_LEN, RX_LEN */
59 /* Strongly recomended, disable if the probe fails on your machine */
60 /* and send me <james@fishsoup.dhs.org> the output of dmesg */
61 #define USE_PROBE 1
62 #undef USE_PROBE
63
64 /* Trace Transmit ring, interrupts, Receive ring or not ? */
65 #define PROBE_VERBOSE 1
66
67 /* Debug option, examine sent and received raw data */
68 /* Irdadump is better, but does not see all packets. enable it if you want. */
69 #undef DUMP_PACKETS
70
71 /* MIR mode has not been tested. Some behaviour is different */
72 /* Seems to work against an Ericsson R520 for me. -Martin */
73 #define USE_MIR
74
75 /* Schedule back to back hardware transmits wherever possible, otherwise */
76 /* we need an interrupt for every frame, unset if oboe works for a bit and */
77 /* then hangs */
78 #define OPTIMIZE_TX
79
80 /* Set the number of slots in the rings */
81 /* If you get rx/tx fifo overflows at high bitrates, you can try increasing */
82 /* these */
83
84 #define RING_SIZE (OBOE_RING_SIZE_RX8 | OBOE_RING_SIZE_TX8)
85 #define TX_SLOTS 8
86 #define RX_SLOTS 8
87
88
89 /* Less user servicable parts below here */
90
91 /* Test, Transmit and receive buffer sizes, adjust at your peril */
92 /* remarks: nfs usually needs 1k blocks */
93 /* remarks: in SIR mode, CRC is received, -> RX_LEN=TX_LEN+2 */
94 /* remarks: test accepts large blocks. Standard is 0x80 */
95 /* When TT_LEN > RX_LEN (SIR mode) data is stored in successive slots. */
96 /* When 3 or more slots are needed for each test packet, */
97 /* data received in the first slots is overwritten, even */
98 /* if OBOE_CTL_RX_HW_OWNS is not set, without any error! */
99 #define TT_LEN 0x80
100 #define TX_LEN 0xc00
101 #define RX_LEN 0xc04
102 /* Real transmitted length (SIR mode) is about 14+(2%*TX_LEN) more */
103 /* long than user-defined length (see async_wrap_skb) and is less then 4K */
104 /* Real received length is (max RX_LEN) differs from user-defined */
105 /* length only b the CRC (2 or 4 bytes) */
106 #define BUF_SAFETY 0x7a
107 #define RX_BUF_SZ (RX_LEN)
108 #define TX_BUF_SZ (TX_LEN+BUF_SAFETY)
109
110
111 /* Logic of the netdev part of this driver */
112
113 /* The RX ring is filled with buffers, when a packet arrives */
114 /* it is DMA'd into the buffer which is marked used and RxDone called */
115 /* RxDone forms an skb (and checks the CRC if in SIR mode) and ships */
116 /* the packet off upstairs */
117
118 /* The transmitter on the oboe chip can work in one of two modes */
119 /* for each ring->tx[] the transmitter can either */
120 /* a) transmit the packet, leave the trasmitter enabled and proceed to */
121 /* the next ring */
122 /* OR */
123 /* b) transmit the packet, switch off the transmitter and issue TxDone */
124
125 /* All packets are entered into the ring in mode b), if the ring was */
126 /* empty the transmitter is started. */
127
128 /* If OPTIMIZE_TX is defined then in TxDone if the ring contains */
129 /* more than one packet, all but the last are set to mode a) [HOWEVER */
130 /* the hardware may not notice this, this is why we start in mode b) ] */
131 /* then restart the transmitter */
132
133 /* If OPTIMIZE_TX is not defined then we just restart the transmitter */
134 /* if the ring isn't empty */
135
136 /* Speed changes are delayed until the TxRing is empty */
137 /* mtt is handled by generating packets with bad CRCs, before the data */
138
139 /* TODO: */
140 /* check the mtt works ok */
141 /* finish the watchdog */
142
143 /* No user servicable parts below here */
144
145 #include <linux/module.h>
146
147 #include <linux/kernel.h>
148 #include <linux/types.h>
149 #include <linux/skbuff.h>
150 #include <linux/netdevice.h>
151 #include <linux/ioport.h>
152 #include <linux/delay.h>
153 #include <linux/slab.h>
154 #include <linux/init.h>
155 #include <linux/pci.h>
156 #include <linux/rtnetlink.h>
157
158 #include <asm/system.h>
159 #include <asm/io.h>
160
161 #include <net/irda/wrapper.h>
162 #include <net/irda/irda.h>
163 //#include <net/irda/irmod.h>
164 //#include <net/irda/irlap_frame.h>
165 #include <net/irda/irda_device.h>
166 #include <net/irda/crc.h>
167
168 #include "donauboe.h"
169
170 #define INB(port) inb_p(port)
171 #define OUTB(val,port) outb_p(val,port)
172 #define OUTBP(val,port) outb_p(val,port)
173
174 #define PROMPT OUTB(OBOE_PROMPT_BIT,OBOE_PROMPT);
175
176 #if PROBE_VERBOSE
177 #define PROBE_DEBUG(args...) (printk (args))
178 #else
179 #define PROBE_DEBUG(args...) ;
180 #endif
181
182 /* Set the DMA to be byte at a time */
183 #define CONFIG0H_DMA_OFF OBOE_CONFIG0H_RCVANY
184 #define CONFIG0H_DMA_ON_NORX CONFIG0H_DMA_OFF| OBOE_CONFIG0H_ENDMAC
185 #define CONFIG0H_DMA_ON CONFIG0H_DMA_ON_NORX | OBOE_CONFIG0H_ENRX
186
187 static DEFINE_PCI_DEVICE_TABLE(toshoboe_pci_tbl) = {
188 { PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_FIR701, PCI_ANY_ID, PCI_ANY_ID, },
189 { PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_FIRD01, PCI_ANY_ID, PCI_ANY_ID, },
190 { } /* Terminating entry */
191 };
192 MODULE_DEVICE_TABLE(pci, toshoboe_pci_tbl);
193
194 #define DRIVER_NAME "toshoboe"
195 static char *driver_name = DRIVER_NAME;
196
197 static int max_baud = 4000000;
198 #ifdef USE_PROBE
199 static int do_probe = 0;
200 #endif
201
202
203 /**********************************************************************/
204 static int
205 toshoboe_checkfcs (unsigned char *buf, int len)
206 {
207 int i;
208 union
209 {
210 __u16 value;
211 __u8 bytes[2];
212 }
213 fcs;
214
215 fcs.value = INIT_FCS;
216
217 for (i = 0; i < len; ++i)
218 fcs.value = irda_fcs (fcs.value, *(buf++));
219
220 return fcs.value == GOOD_FCS;
221 }
222
223 /***********************************************************************/
224 /* Generic chip handling code */
225 #ifdef DUMP_PACKETS
226 static unsigned char dump[50];
227 static void
228 _dumpbufs (unsigned char *data, int len, char tete)
229 {
230 int i,j;
231 char head=tete;
232 for (i=0;i<len;i+=16) {
233 for (j=0;j<16 && i+j<len;j++) { sprintf(&dump[3*j],"%02x.",data[i+j]); }
234 dump [3*j]=0;
235 IRDA_DEBUG (2, "%c%s\n",head , dump);
236 head='+';
237 }
238 }
239 #endif
240
241 #ifdef USE_PROBE
242 /* Dump the registers */
243 static void
244 toshoboe_dumpregs (struct toshoboe_cb *self)
245 {
246 __u32 ringbase;
247
248 IRDA_DEBUG (4, "%s()\n", __func__);
249
250 ringbase = INB (OBOE_RING_BASE0) << 10;
251 ringbase |= INB (OBOE_RING_BASE1) << 18;
252 ringbase |= INB (OBOE_RING_BASE2) << 26;
253
254 printk (KERN_ERR DRIVER_NAME ": Register dump:\n");
255 printk (KERN_ERR "Interrupts: Tx:%d Rx:%d TxUnder:%d RxOver:%d Sip:%d\n",
256 self->int_tx, self->int_rx, self->int_txunder, self->int_rxover,
257 self->int_sip);
258 printk (KERN_ERR "RX %02x TX %02x RingBase %08x\n",
259 INB (OBOE_RXSLOT), INB (OBOE_TXSLOT), ringbase);
260 printk (KERN_ERR "RING_SIZE %02x IER %02x ISR %02x\n",
261 INB (OBOE_RING_SIZE), INB (OBOE_IER), INB (OBOE_ISR));
262 printk (KERN_ERR "CONFIG1 %02x STATUS %02x\n",
263 INB (OBOE_CONFIG1), INB (OBOE_STATUS));
264 printk (KERN_ERR "CONFIG0 %02x%02x ENABLE %02x%02x\n",
265 INB (OBOE_CONFIG0H), INB (OBOE_CONFIG0L),
266 INB (OBOE_ENABLEH), INB (OBOE_ENABLEL));
267 printk (KERN_ERR "NEW_PCONFIG %02x%02x CURR_PCONFIG %02x%02x\n",
268 INB (OBOE_NEW_PCONFIGH), INB (OBOE_NEW_PCONFIGL),
269 INB (OBOE_CURR_PCONFIGH), INB (OBOE_CURR_PCONFIGL));
270 printk (KERN_ERR "MAXLEN %02x%02x RXCOUNT %02x%02x\n",
271 INB (OBOE_MAXLENH), INB (OBOE_MAXLENL),
272 INB (OBOE_RXCOUNTL), INB (OBOE_RXCOUNTH));
273
274 if (self->ring)
275 {
276 int i;
277 ringbase = virt_to_bus (self->ring);
278 printk (KERN_ERR "Ring at %08x:\n", ringbase);
279 printk (KERN_ERR "RX:");
280 for (i = 0; i < RX_SLOTS; ++i)
281 printk (" (%d,%02x)",self->ring->rx[i].len,self->ring->rx[i].control);
282 printk ("\n");
283 printk (KERN_ERR "TX:");
284 for (i = 0; i < RX_SLOTS; ++i)
285 printk (" (%d,%02x)",self->ring->tx[i].len,self->ring->tx[i].control);
286 printk ("\n");
287 }
288 }
289 #endif
290
291 /*Don't let the chip look at memory */
292 static void
293 toshoboe_disablebm (struct toshoboe_cb *self)
294 {
295 __u8 command;
296 IRDA_DEBUG (4, "%s()\n", __func__);
297
298 pci_read_config_byte (self->pdev, PCI_COMMAND, &command);
299 command &= ~PCI_COMMAND_MASTER;
300 pci_write_config_byte (self->pdev, PCI_COMMAND, command);
301
302 }
303
304 /* Shutdown the chip and point the taskfile reg somewhere else */
305 static void
306 toshoboe_stopchip (struct toshoboe_cb *self)
307 {
308 IRDA_DEBUG (4, "%s()\n", __func__);
309
310 /*Disable interrupts */
311 OUTB (0x0, OBOE_IER);
312 /*Disable DMA, Disable Rx, Disable Tx */
313 OUTB (CONFIG0H_DMA_OFF, OBOE_CONFIG0H);
314 /*Disable SIR MIR FIR, Tx and Rx */
315 OUTB (0x00, OBOE_ENABLEH);
316 /*Point the ring somewhere safe */
317 OUTB (0x3f, OBOE_RING_BASE2);
318 OUTB (0xff, OBOE_RING_BASE1);
319 OUTB (0xff, OBOE_RING_BASE0);
320
321 OUTB (RX_LEN >> 8, OBOE_MAXLENH);
322 OUTB (RX_LEN & 0xff, OBOE_MAXLENL);
323
324 /*Acknoledge any pending interrupts */
325 OUTB (0xff, OBOE_ISR);
326
327 /*Why */
328 OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
329
330 /*switch it off */
331 OUTB (OBOE_CONFIG1_OFF, OBOE_CONFIG1);
332
333 toshoboe_disablebm (self);
334 }
335
336 /* Transmitter initialization */
337 static void
338 toshoboe_start_DMA (struct toshoboe_cb *self, int opts)
339 {
340 OUTB (0x0, OBOE_ENABLEH);
341 OUTB (CONFIG0H_DMA_ON | opts, OBOE_CONFIG0H);
342 OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
343 PROMPT;
344 }
345
346 /*Set the baud rate */
347 static void
348 toshoboe_setbaud (struct toshoboe_cb *self)
349 {
350 __u16 pconfig = 0;
351 __u8 config0l = 0;
352
353 IRDA_DEBUG (2, "%s(%d/%d)\n", __func__, self->speed, self->io.speed);
354
355 switch (self->speed)
356 {
357 case 2400:
358 case 4800:
359 case 9600:
360 case 19200:
361 case 38400:
362 case 57600:
363 case 115200:
364 #ifdef USE_MIR
365 case 1152000:
366 #endif
367 case 4000000:
368 break;
369 default:
370
371 printk (KERN_ERR DRIVER_NAME ": switch to unsupported baudrate %d\n",
372 self->speed);
373 return;
374 }
375
376 switch (self->speed)
377 {
378 /* For SIR the preamble is done by adding XBOFs */
379 /* to the packet */
380 /* set to filtered SIR mode, filter looks for BOF and EOF */
381 case 2400:
382 pconfig |= 47 << OBOE_PCONFIG_BAUDSHIFT;
383 pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
384 break;
385 case 4800:
386 pconfig |= 23 << OBOE_PCONFIG_BAUDSHIFT;
387 pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
388 break;
389 case 9600:
390 pconfig |= 11 << OBOE_PCONFIG_BAUDSHIFT;
391 pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
392 break;
393 case 19200:
394 pconfig |= 5 << OBOE_PCONFIG_BAUDSHIFT;
395 pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
396 break;
397 case 38400:
398 pconfig |= 2 << OBOE_PCONFIG_BAUDSHIFT;
399 pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
400 break;
401 case 57600:
402 pconfig |= 1 << OBOE_PCONFIG_BAUDSHIFT;
403 pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
404 break;
405 case 115200:
406 pconfig |= 0 << OBOE_PCONFIG_BAUDSHIFT;
407 pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
408 break;
409 default:
410 /*Set to packet based reception */
411 OUTB (RX_LEN >> 8, OBOE_MAXLENH);
412 OUTB (RX_LEN & 0xff, OBOE_MAXLENL);
413 break;
414 }
415
416 switch (self->speed)
417 {
418 case 2400:
419 case 4800:
420 case 9600:
421 case 19200:
422 case 38400:
423 case 57600:
424 case 115200:
425 config0l = OBOE_CONFIG0L_ENSIR;
426 if (self->async)
427 {
428 /*Set to character based reception */
429 /*System will lock if MAXLEN=0 */
430 /*so have to be careful */
431 OUTB (0x01, OBOE_MAXLENH);
432 OUTB (0x01, OBOE_MAXLENL);
433 OUTB (0x00, OBOE_MAXLENH);
434 }
435 else
436 {
437 /*Set to packet based reception */
438 config0l |= OBOE_CONFIG0L_ENSIRF;
439 OUTB (RX_LEN >> 8, OBOE_MAXLENH);
440 OUTB (RX_LEN & 0xff, OBOE_MAXLENL);
441 }
442 break;
443
444 #ifdef USE_MIR
445 /* MIR mode */
446 /* Set for 16 bit CRC and enable MIR */
447 /* Preamble now handled by the chip */
448 case 1152000:
449 pconfig |= 0 << OBOE_PCONFIG_BAUDSHIFT;
450 pconfig |= 8 << OBOE_PCONFIG_WIDTHSHIFT;
451 pconfig |= 1 << OBOE_PCONFIG_PREAMBLESHIFT;
452 config0l = OBOE_CONFIG0L_CRC16 | OBOE_CONFIG0L_ENMIR;
453 break;
454 #endif
455 /* FIR mode */
456 /* Set for 32 bit CRC and enable FIR */
457 /* Preamble handled by the chip */
458 case 4000000:
459 pconfig |= 0 << OBOE_PCONFIG_BAUDSHIFT;
460 /* Documentation says 14, but toshiba use 15 in their drivers */
461 pconfig |= 15 << OBOE_PCONFIG_PREAMBLESHIFT;
462 config0l = OBOE_CONFIG0L_ENFIR;
463 break;
464 }
465
466 /* Copy into new PHY config buffer */
467 OUTBP (pconfig >> 8, OBOE_NEW_PCONFIGH);
468 OUTB (pconfig & 0xff, OBOE_NEW_PCONFIGL);
469 OUTB (config0l, OBOE_CONFIG0L);
470
471 /* Now make OBOE copy from new PHY to current PHY */
472 OUTB (0x0, OBOE_ENABLEH);
473 OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
474 PROMPT;
475
476 /* speed change executed */
477 self->new_speed = 0;
478 self->io.speed = self->speed;
479 }
480
481 /*Let the chip look at memory */
482 static void
483 toshoboe_enablebm (struct toshoboe_cb *self)
484 {
485 IRDA_DEBUG (4, "%s()\n", __func__);
486 pci_set_master (self->pdev);
487 }
488
489 /*setup the ring */
490 static void
491 toshoboe_initring (struct toshoboe_cb *self)
492 {
493 int i;
494
495 IRDA_DEBUG (4, "%s()\n", __func__);
496
497 for (i = 0; i < TX_SLOTS; ++i)
498 {
499 self->ring->tx[i].len = 0;
500 self->ring->tx[i].control = 0x00;
501 self->ring->tx[i].address = virt_to_bus (self->tx_bufs[i]);
502 }
503
504 for (i = 0; i < RX_SLOTS; ++i)
505 {
506 self->ring->rx[i].len = RX_LEN;
507 self->ring->rx[i].len = 0;
508 self->ring->rx[i].address = virt_to_bus (self->rx_bufs[i]);
509 self->ring->rx[i].control = OBOE_CTL_RX_HW_OWNS;
510 }
511 }
512
513 static void
514 toshoboe_resetptrs (struct toshoboe_cb *self)
515 {
516 /* Can reset pointers by twidling DMA */
517 OUTB (0x0, OBOE_ENABLEH);
518 OUTBP (CONFIG0H_DMA_OFF, OBOE_CONFIG0H);
519 OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
520
521 self->rxs = inb_p (OBOE_RXSLOT) & OBOE_SLOT_MASK;
522 self->txs = inb_p (OBOE_TXSLOT) & OBOE_SLOT_MASK;
523 }
524
525 /* Called in locked state */
526 static void
527 toshoboe_initptrs (struct toshoboe_cb *self)
528 {
529
530 /* spin_lock_irqsave(self->spinlock, flags); */
531 /* save_flags (flags); */
532
533 /* Can reset pointers by twidling DMA */
534 toshoboe_resetptrs (self);
535
536 OUTB (0x0, OBOE_ENABLEH);
537 OUTB (CONFIG0H_DMA_ON, OBOE_CONFIG0H);
538 OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
539
540 self->txpending = 0;
541
542 /* spin_unlock_irqrestore(self->spinlock, flags); */
543 /* restore_flags (flags); */
544 }
545
546 /* Wake the chip up and get it looking at the rings */
547 /* Called in locked state */
548 static void
549 toshoboe_startchip (struct toshoboe_cb *self)
550 {
551 __u32 physaddr;
552
553 IRDA_DEBUG (4, "%s()\n", __func__);
554
555 toshoboe_initring (self);
556 toshoboe_enablebm (self);
557 OUTBP (OBOE_CONFIG1_RESET, OBOE_CONFIG1);
558 OUTBP (OBOE_CONFIG1_ON, OBOE_CONFIG1);
559
560 /* Stop the clocks */
561 OUTB (0, OBOE_ENABLEH);
562
563 /*Set size of rings */
564 OUTB (RING_SIZE, OBOE_RING_SIZE);
565
566 /*Acknoledge any pending interrupts */
567 OUTB (0xff, OBOE_ISR);
568
569 /*Enable ints */
570 OUTB (OBOE_INT_TXDONE | OBOE_INT_RXDONE |
571 OBOE_INT_TXUNDER | OBOE_INT_RXOVER | OBOE_INT_SIP , OBOE_IER);
572
573 /*Acknoledge any pending interrupts */
574 OUTB (0xff, OBOE_ISR);
575
576 /*Set the maximum packet length to 0xfff (4095) */
577 OUTB (RX_LEN >> 8, OBOE_MAXLENH);
578 OUTB (RX_LEN & 0xff, OBOE_MAXLENL);
579
580 /*Shutdown DMA */
581 OUTB (CONFIG0H_DMA_OFF, OBOE_CONFIG0H);
582
583 /*Find out where the rings live */
584 physaddr = virt_to_bus (self->ring);
585
586 IRDA_ASSERT ((physaddr & 0x3ff) == 0,
587 printk (KERN_ERR DRIVER_NAME "ring not correctly aligned\n");
588 return;);
589
590 OUTB ((physaddr >> 10) & 0xff, OBOE_RING_BASE0);
591 OUTB ((physaddr >> 18) & 0xff, OBOE_RING_BASE1);
592 OUTB ((physaddr >> 26) & 0x3f, OBOE_RING_BASE2);
593
594 /*Enable DMA controller in byte mode and RX */
595 OUTB (CONFIG0H_DMA_ON, OBOE_CONFIG0H);
596
597 /* Start up the clocks */
598 OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
599
600 /*set to sensible speed */
601 self->speed = 9600;
602 toshoboe_setbaud (self);
603 toshoboe_initptrs (self);
604 }
605
606 static void
607 toshoboe_isntstuck (struct toshoboe_cb *self)
608 {
609 }
610
611 static void
612 toshoboe_checkstuck (struct toshoboe_cb *self)
613 {
614 unsigned long flags;
615
616 if (0)
617 {
618 spin_lock_irqsave(&self->spinlock, flags);
619
620 /* This will reset the chip completely */
621 printk (KERN_ERR DRIVER_NAME ": Resetting chip\n");
622
623 toshoboe_stopchip (self);
624 toshoboe_startchip (self);
625 spin_unlock_irqrestore(&self->spinlock, flags);
626 }
627 }
628
629 /*Generate packet of about mtt us long */
630 static int
631 toshoboe_makemttpacket (struct toshoboe_cb *self, void *buf, int mtt)
632 {
633 int xbofs;
634
635 xbofs = ((int) (mtt/100)) * (int) (self->speed);
636 xbofs=xbofs/80000; /*Eight bits per byte, and mtt is in us*/
637 xbofs++;
638
639 IRDA_DEBUG (2, DRIVER_NAME
640 ": generated mtt of %d bytes for %d us at %d baud\n"
641 , xbofs,mtt,self->speed);
642
643 if (xbofs > TX_LEN)
644 {
645 printk (KERN_ERR DRIVER_NAME ": wanted %d bytes MTT but TX_LEN is %d\n",
646 xbofs, TX_LEN);
647 xbofs = TX_LEN;
648 }
649
650 /*xbofs will do for SIR, MIR and FIR,SIR mode doesn't generate a checksum anyway */
651 memset (buf, XBOF, xbofs);
652
653 return xbofs;
654 }
655
656 #ifdef USE_PROBE
657 /***********************************************************************/
658 /* Probe code */
659
660 static void
661 toshoboe_dumptx (struct toshoboe_cb *self)
662 {
663 int i;
664 PROBE_DEBUG(KERN_WARNING "TX:");
665 for (i = 0; i < RX_SLOTS; ++i)
666 PROBE_DEBUG(" (%d,%02x)",self->ring->tx[i].len,self->ring->tx[i].control);
667 PROBE_DEBUG(" [%d]\n",self->speed);
668 }
669
670 static void
671 toshoboe_dumprx (struct toshoboe_cb *self, int score)
672 {
673 int i;
674 PROBE_DEBUG(" %d\nRX:",score);
675 for (i = 0; i < RX_SLOTS; ++i)
676 PROBE_DEBUG(" (%d,%02x)",self->ring->rx[i].len,self->ring->rx[i].control);
677 PROBE_DEBUG("\n");
678 }
679
680 static inline int
681 stuff_byte (__u8 byte, __u8 * buf)
682 {
683 switch (byte)
684 {
685 case BOF: /* FALLTHROUGH */
686 case EOF: /* FALLTHROUGH */
687 case CE:
688 /* Insert transparently coded */
689 buf[0] = CE; /* Send link escape */
690 buf[1] = byte ^ IRDA_TRANS; /* Complement bit 5 */
691 return 2;
692 /* break; */
693 default:
694 /* Non-special value, no transparency required */
695 buf[0] = byte;
696 return 1;
697 /* break; */
698 }
699 }
700
701 static irqreturn_t
702 toshoboe_probeinterrupt (int irq, void *dev_id)
703 {
704 struct toshoboe_cb *self = dev_id;
705 __u8 irqstat;
706
707 irqstat = INB (OBOE_ISR);
708
709 /* was it us */
710 if (!(irqstat & OBOE_INT_MASK))
711 return IRQ_NONE;
712
713 /* Ack all the interrupts */
714 OUTB (irqstat, OBOE_ISR);
715
716 if (irqstat & OBOE_INT_TXDONE)
717 {
718 int txp;
719
720 self->int_tx++;
721 PROBE_DEBUG("T");
722
723 txp = INB (OBOE_TXSLOT) & OBOE_SLOT_MASK;
724 if (self->ring->tx[txp].control & OBOE_CTL_TX_HW_OWNS)
725 {
726 self->int_tx+=100;
727 PROBE_DEBUG("S");
728 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP);
729 }
730 }
731
732 if (irqstat & OBOE_INT_RXDONE) {
733 self->int_rx++;
734 PROBE_DEBUG("R"); }
735 if (irqstat & OBOE_INT_TXUNDER) {
736 self->int_txunder++;
737 PROBE_DEBUG("U"); }
738 if (irqstat & OBOE_INT_RXOVER) {
739 self->int_rxover++;
740 PROBE_DEBUG("O"); }
741 if (irqstat & OBOE_INT_SIP) {
742 self->int_sip++;
743 PROBE_DEBUG("I"); }
744 return IRQ_HANDLED;
745 }
746
747 static int
748 toshoboe_maketestpacket (unsigned char *buf, int badcrc, int fir)
749 {
750 int i;
751 int len = 0;
752 union
753 {
754 __u16 value;
755 __u8 bytes[2];
756 }
757 fcs;
758
759 if (fir)
760 {
761 memset (buf, 0, TT_LEN);
762 return TT_LEN;
763 }
764
765 fcs.value = INIT_FCS;
766
767 memset (buf, XBOF, 10);
768 len += 10;
769 buf[len++] = BOF;
770
771 for (i = 0; i < TT_LEN; ++i)
772 {
773 len += stuff_byte (i, buf + len);
774 fcs.value = irda_fcs (fcs.value, i);
775 }
776
777 len += stuff_byte (fcs.bytes[0] ^ badcrc, buf + len);
778 len += stuff_byte (fcs.bytes[1] ^ badcrc, buf + len);
779 buf[len++] = EOF;
780 len++;
781 return len;
782 }
783
784 static int
785 toshoboe_probefail (struct toshoboe_cb *self, char *msg)
786 {
787 printk (KERN_ERR DRIVER_NAME "probe(%d) failed %s\n",self-> speed, msg);
788 toshoboe_dumpregs (self);
789 toshoboe_stopchip (self);
790 free_irq (self->io.irq, (void *) self);
791 return 0;
792 }
793
794 static int
795 toshoboe_numvalidrcvs (struct toshoboe_cb *self)
796 {
797 int i, ret = 0;
798 for (i = 0; i < RX_SLOTS; ++i)
799 if ((self->ring->rx[i].control & 0xe0) == 0)
800 ret++;
801
802 return ret;
803 }
804
805 static int
806 toshoboe_numrcvs (struct toshoboe_cb *self)
807 {
808 int i, ret = 0;
809 for (i = 0; i < RX_SLOTS; ++i)
810 if (!(self->ring->rx[i].control & OBOE_CTL_RX_HW_OWNS))
811 ret++;
812
813 return ret;
814 }
815
816 static int
817 toshoboe_probe (struct toshoboe_cb *self)
818 {
819 int i, j, n;
820 #ifdef USE_MIR
821 static const int bauds[] = { 9600, 115200, 4000000, 1152000 };
822 #else
823 static const int bauds[] = { 9600, 115200, 4000000 };
824 #endif
825 unsigned long flags;
826
827 IRDA_DEBUG (4, "%s()\n", __func__);
828
829 if (request_irq (self->io.irq, toshoboe_probeinterrupt,
830 self->io.irqflags, "toshoboe", (void *) self))
831 {
832 printk (KERN_ERR DRIVER_NAME ": probe failed to allocate irq %d\n",
833 self->io.irq);
834 return 0;
835 }
836
837 /* test 1: SIR filter and back to back */
838
839 for (j = 0; j < ARRAY_SIZE(bauds); ++j)
840 {
841 int fir = (j > 1);
842 toshoboe_stopchip (self);
843
844
845 spin_lock_irqsave(&self->spinlock, flags);
846 /*Address is already setup */
847 toshoboe_startchip (self);
848 self->int_rx = self->int_tx = 0;
849 self->speed = bauds[j];
850 toshoboe_setbaud (self);
851 toshoboe_initptrs (self);
852 spin_unlock_irqrestore(&self->spinlock, flags);
853
854 self->ring->tx[self->txs].control =
855 /* (FIR only) OBOE_CTL_TX_SIP needed for switching to next slot */
856 /* MIR: all received data is stored in one slot */
857 (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX
858 : OBOE_CTL_TX_HW_OWNS ;
859 self->ring->tx[self->txs].len =
860 toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir);
861 self->txs++;
862 self->txs %= TX_SLOTS;
863
864 self->ring->tx[self->txs].control =
865 (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_SIP
866 : OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX ;
867 self->ring->tx[self->txs].len =
868 toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir);
869 self->txs++;
870 self->txs %= TX_SLOTS;
871
872 self->ring->tx[self->txs].control =
873 (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX
874 : OBOE_CTL_TX_HW_OWNS ;
875 self->ring->tx[self->txs].len =
876 toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir);
877 self->txs++;
878 self->txs %= TX_SLOTS;
879
880 self->ring->tx[self->txs].control =
881 (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX
882 | OBOE_CTL_TX_SIP | OBOE_CTL_TX_BAD_CRC
883 : OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX ;
884 self->ring->tx[self->txs].len =
885 toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir);
886 self->txs++;
887 self->txs %= TX_SLOTS;
888
889 toshoboe_dumptx (self);
890 /* Turn on TX and RX and loopback */
891 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP);
892
893 i = 0;
894 n = fir ? 1 : 4;
895 while (toshoboe_numvalidrcvs (self) != n)
896 {
897 if (i > 4800)
898 return toshoboe_probefail (self, "filter test");
899 udelay ((9600*(TT_LEN+16))/self->speed);
900 i++;
901 }
902
903 n = fir ? 203 : 102;
904 while ((toshoboe_numrcvs(self) != self->int_rx) || (self->int_tx != n))
905 {
906 if (i > 4800)
907 return toshoboe_probefail (self, "interrupt test");
908 udelay ((9600*(TT_LEN+16))/self->speed);
909 i++;
910 }
911 toshoboe_dumprx (self,i);
912
913 }
914
915 /* test 2: SIR in char at a time */
916
917 toshoboe_stopchip (self);
918 self->int_rx = self->int_tx = 0;
919
920 spin_lock_irqsave(&self->spinlock, flags);
921 toshoboe_startchip (self);
922 spin_unlock_irqrestore(&self->spinlock, flags);
923
924 self->async = 1;
925 self->speed = 115200;
926 toshoboe_setbaud (self);
927 self->ring->tx[self->txs].control =
928 OBOE_CTL_TX_RTCENTX | OBOE_CTL_TX_HW_OWNS;
929 self->ring->tx[self->txs].len = 4;
930
931 ((unsigned char *) self->tx_bufs[self->txs])[0] = 'f';
932 ((unsigned char *) self->tx_bufs[self->txs])[1] = 'i';
933 ((unsigned char *) self->tx_bufs[self->txs])[2] = 's';
934 ((unsigned char *) self->tx_bufs[self->txs])[3] = 'h';
935 toshoboe_dumptx (self);
936 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP);
937
938 i = 0;
939 while (toshoboe_numvalidrcvs (self) != 4)
940 {
941 if (i > 100)
942 return toshoboe_probefail (self, "Async test");
943 udelay (100);
944 i++;
945 }
946
947 while ((toshoboe_numrcvs (self) != self->int_rx) || (self->int_tx != 1))
948 {
949 if (i > 100)
950 return toshoboe_probefail (self, "Async interrupt test");
951 udelay (100);
952 i++;
953 }
954 toshoboe_dumprx (self,i);
955
956 self->async = 0;
957 self->speed = 9600;
958 toshoboe_setbaud (self);
959 toshoboe_stopchip (self);
960
961 free_irq (self->io.irq, (void *) self);
962
963 printk (KERN_WARNING DRIVER_NAME ": Self test passed ok\n");
964
965 return 1;
966 }
967 #endif
968
969 /******************************************************************/
970 /* Netdev style code */
971
972 /* Transmit something */
973 static netdev_tx_t
974 toshoboe_hard_xmit (struct sk_buff *skb, struct net_device *dev)
975 {
976 struct toshoboe_cb *self;
977 __s32 speed;
978 int mtt, len, ctl;
979 unsigned long flags;
980 struct irda_skb_cb *cb = (struct irda_skb_cb *) skb->cb;
981
982 self = netdev_priv(dev);
983
984 IRDA_ASSERT (self != NULL, return NETDEV_TX_OK; );
985
986 IRDA_DEBUG (1, "%s.tx:%x(%x)%x\n", __func__
987 ,skb->len,self->txpending,INB (OBOE_ENABLEH));
988 if (!cb->magic) {
989 IRDA_DEBUG (2, "%s.Not IrLAP:%x\n", __func__, cb->magic);
990 #ifdef DUMP_PACKETS
991 _dumpbufs(skb->data,skb->len,'>');
992 #endif
993 }
994
995 /* change speed pending, wait for its execution */
996 if (self->new_speed)
997 return NETDEV_TX_BUSY;
998
999 /* device stopped (apm) wait for restart */
1000 if (self->stopped)
1001 return NETDEV_TX_BUSY;
1002
1003 toshoboe_checkstuck (self);
1004
1005 /* Check if we need to change the speed */
1006 /* But not now. Wait after transmission if mtt not required */
1007 speed=irda_get_next_speed(skb);
1008 if ((speed != self->io.speed) && (speed != -1))
1009 {
1010 spin_lock_irqsave(&self->spinlock, flags);
1011
1012 if (self->txpending || skb->len)
1013 {
1014 self->new_speed = speed;
1015 IRDA_DEBUG (1, "%s: Queued TxDone scheduled speed change %d\n" ,
1016 __func__, speed);
1017 /* if no data, that's all! */
1018 if (!skb->len)
1019 {
1020 spin_unlock_irqrestore(&self->spinlock, flags);
1021 dev_kfree_skb (skb);
1022 return NETDEV_TX_OK;
1023 }
1024 /* True packet, go on, but */
1025 /* do not accept anything before change speed execution */
1026 netif_stop_queue(dev);
1027 /* ready to process TxDone interrupt */
1028 spin_unlock_irqrestore(&self->spinlock, flags);
1029 }
1030 else
1031 {
1032 /* idle and no data, change speed now */
1033 self->speed = speed;
1034 toshoboe_setbaud (self);
1035 spin_unlock_irqrestore(&self->spinlock, flags);
1036 dev_kfree_skb (skb);
1037 return NETDEV_TX_OK;
1038 }
1039
1040 }
1041
1042 if ((mtt = irda_get_mtt(skb)))
1043 {
1044 /* This is fair since the queue should be empty anyway */
1045 spin_lock_irqsave(&self->spinlock, flags);
1046
1047 if (self->txpending)
1048 {
1049 spin_unlock_irqrestore(&self->spinlock, flags);
1050 return NETDEV_TX_BUSY;
1051 }
1052
1053 /* If in SIR mode we need to generate a string of XBOFs */
1054 /* In MIR and FIR we need to generate a string of data */
1055 /* which we will add a wrong checksum to */
1056
1057 mtt = toshoboe_makemttpacket (self, self->tx_bufs[self->txs], mtt);
1058 IRDA_DEBUG (1, "%s.mtt:%x(%x)%d\n", __func__
1059 ,skb->len,mtt,self->txpending);
1060 if (mtt)
1061 {
1062 self->ring->tx[self->txs].len = mtt & 0xfff;
1063
1064 ctl = OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX;
1065 if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_FIRON)
1066 {
1067 ctl |= OBOE_CTL_TX_BAD_CRC | OBOE_CTL_TX_SIP ;
1068 }
1069 #ifdef USE_MIR
1070 else if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_MIRON)
1071 {
1072 ctl |= OBOE_CTL_TX_BAD_CRC;
1073 }
1074 #endif
1075 self->ring->tx[self->txs].control = ctl;
1076
1077 OUTB (0x0, OBOE_ENABLEH);
1078 /* It is only a timer. Do not send mtt packet outside! */
1079 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP);
1080
1081 self->txpending++;
1082
1083 self->txs++;
1084 self->txs %= TX_SLOTS;
1085
1086 }
1087 else
1088 {
1089 printk(KERN_ERR DRIVER_NAME ": problem with mtt packet - ignored\n");
1090 }
1091 spin_unlock_irqrestore(&self->spinlock, flags);
1092 }
1093
1094 #ifdef DUMP_PACKETS
1095 dumpbufs(skb->data,skb->len,'>');
1096 #endif
1097
1098 spin_lock_irqsave(&self->spinlock, flags);
1099
1100 if (self->ring->tx[self->txs].control & OBOE_CTL_TX_HW_OWNS)
1101 {
1102 IRDA_DEBUG (0, "%s.ful:%x(%x)%x\n", __func__
1103 ,skb->len, self->ring->tx[self->txs].control, self->txpending);
1104 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX);
1105 spin_unlock_irqrestore(&self->spinlock, flags);
1106 return NETDEV_TX_BUSY;
1107 }
1108
1109 if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_SIRON)
1110 {
1111 len = async_wrap_skb (skb, self->tx_bufs[self->txs], TX_BUF_SZ);
1112 }
1113 else
1114 {
1115 len = skb->len;
1116 skb_copy_from_linear_data(skb, self->tx_bufs[self->txs], len);
1117 }
1118 self->ring->tx[self->txs].len = len & 0x0fff;
1119
1120 /*Sometimes the HW doesn't see us assert RTCENTX in the interrupt code */
1121 /*later this plays safe, we garuntee the last packet to be transmitted */
1122 /*has RTCENTX set */
1123
1124 ctl = OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX;
1125 if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_FIRON)
1126 {
1127 ctl |= OBOE_CTL_TX_SIP ;
1128 }
1129 self->ring->tx[self->txs].control = ctl;
1130
1131 /* If transmitter is idle start in one-shot mode */
1132
1133 if (!self->txpending)
1134 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX);
1135
1136 self->txpending++;
1137
1138 self->txs++;
1139 self->txs %= TX_SLOTS;
1140
1141 spin_unlock_irqrestore(&self->spinlock, flags);
1142 dev_kfree_skb (skb);
1143
1144 return NETDEV_TX_OK;
1145 }
1146
1147 /*interrupt handler */
1148 static irqreturn_t
1149 toshoboe_interrupt (int irq, void *dev_id)
1150 {
1151 struct toshoboe_cb *self = dev_id;
1152 __u8 irqstat;
1153 struct sk_buff *skb = NULL;
1154
1155 irqstat = INB (OBOE_ISR);
1156
1157 /* was it us */
1158 if (!(irqstat & OBOE_INT_MASK))
1159 return IRQ_NONE;
1160
1161 /* Ack all the interrupts */
1162 OUTB (irqstat, OBOE_ISR);
1163
1164 toshoboe_isntstuck (self);
1165
1166 /* Txdone */
1167 if (irqstat & OBOE_INT_TXDONE)
1168 {
1169 int txp, txpc;
1170 int i;
1171
1172 txp = self->txpending;
1173 self->txpending = 0;
1174
1175 for (i = 0; i < TX_SLOTS; ++i)
1176 {
1177 if (self->ring->tx[i].control & OBOE_CTL_TX_HW_OWNS)
1178 self->txpending++;
1179 }
1180 IRDA_DEBUG (1, "%s.txd(%x)%x/%x\n", __func__
1181 ,irqstat,txp,self->txpending);
1182
1183 txp = INB (OBOE_TXSLOT) & OBOE_SLOT_MASK;
1184
1185 /* Got anything queued ? start it together */
1186 if (self->ring->tx[txp].control & OBOE_CTL_TX_HW_OWNS)
1187 {
1188 txpc = txp;
1189 #ifdef OPTIMIZE_TX
1190 while (self->ring->tx[txpc].control & OBOE_CTL_TX_HW_OWNS)
1191 {
1192 txp = txpc;
1193 txpc++;
1194 txpc %= TX_SLOTS;
1195 self->netdev->stats.tx_packets++;
1196 if (self->ring->tx[txpc].control & OBOE_CTL_TX_HW_OWNS)
1197 self->ring->tx[txp].control &= ~OBOE_CTL_TX_RTCENTX;
1198 }
1199 self->netdev->stats.tx_packets--;
1200 #else
1201 self->netdev->stats.tx_packets++;
1202 #endif
1203 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX);
1204 }
1205
1206 if ((!self->txpending) && (self->new_speed))
1207 {
1208 self->speed = self->new_speed;
1209 IRDA_DEBUG (1, "%s: Executed TxDone scheduled speed change %d\n",
1210 __func__, self->speed);
1211 toshoboe_setbaud (self);
1212 }
1213
1214 /* Tell network layer that we want more frames */
1215 if (!self->new_speed)
1216 netif_wake_queue(self->netdev);
1217 }
1218
1219 if (irqstat & OBOE_INT_RXDONE)
1220 {
1221 while (!(self->ring->rx[self->rxs].control & OBOE_CTL_RX_HW_OWNS))
1222 {
1223 int len = self->ring->rx[self->rxs].len;
1224 skb = NULL;
1225 IRDA_DEBUG (3, "%s.rcv:%x(%x)\n", __func__
1226 ,len,self->ring->rx[self->rxs].control);
1227
1228 #ifdef DUMP_PACKETS
1229 dumpbufs(self->rx_bufs[self->rxs],len,'<');
1230 #endif
1231
1232 if (self->ring->rx[self->rxs].control == 0)
1233 {
1234 __u8 enable = INB (OBOE_ENABLEH);
1235
1236 /* In SIR mode we need to check the CRC as this */
1237 /* hasn't been done by the hardware */
1238 if (enable & OBOE_ENABLEH_SIRON)
1239 {
1240 if (!toshoboe_checkfcs (self->rx_bufs[self->rxs], len))
1241 len = 0;
1242 /*Trim off the CRC */
1243 if (len > 1)
1244 len -= 2;
1245 else
1246 len = 0;
1247 IRDA_DEBUG (1, "%s.SIR:%x(%x)\n", __func__, len,enable);
1248 }
1249
1250 #ifdef USE_MIR
1251 else if (enable & OBOE_ENABLEH_MIRON)
1252 {
1253 if (len > 1)
1254 len -= 2;
1255 else
1256 len = 0;
1257 IRDA_DEBUG (2, "%s.MIR:%x(%x)\n", __func__, len,enable);
1258 }
1259 #endif
1260 else if (enable & OBOE_ENABLEH_FIRON)
1261 {
1262 if (len > 3)
1263 len -= 4; /*FIXME: check this */
1264 else
1265 len = 0;
1266 IRDA_DEBUG (1, "%s.FIR:%x(%x)\n", __func__, len,enable);
1267 }
1268 else
1269 IRDA_DEBUG (0, "%s.?IR:%x(%x)\n", __func__, len,enable);
1270
1271 if (len)
1272 {
1273 skb = dev_alloc_skb (len + 1);
1274 if (skb)
1275 {
1276 skb_reserve (skb, 1);
1277
1278 skb_put (skb, len);
1279 skb_copy_to_linear_data(skb, self->rx_bufs[self->rxs],
1280 len);
1281 self->netdev->stats.rx_packets++;
1282 skb->dev = self->netdev;
1283 skb_reset_mac_header(skb);
1284 skb->protocol = htons (ETH_P_IRDA);
1285 }
1286 else
1287 {
1288 printk (KERN_INFO
1289 "%s(), memory squeeze, dropping frame.\n",
1290 __func__);
1291 }
1292 }
1293 }
1294 else
1295 {
1296 /* TODO: =========================================== */
1297 /* if OBOE_CTL_RX_LENGTH, our buffers are too small */
1298 /* (MIR or FIR) data is lost. */
1299 /* (SIR) data is splitted in several slots. */
1300 /* we have to join all the received buffers received */
1301 /*in a large buffer before checking CRC. */
1302 IRDA_DEBUG (0, "%s.err:%x(%x)\n", __func__
1303 ,len,self->ring->rx[self->rxs].control);
1304 }
1305
1306 self->ring->rx[self->rxs].len = 0x0;
1307 self->ring->rx[self->rxs].control = OBOE_CTL_RX_HW_OWNS;
1308
1309 self->rxs++;
1310 self->rxs %= RX_SLOTS;
1311
1312 if (skb)
1313 netif_rx (skb);
1314
1315 }
1316 }
1317
1318 if (irqstat & OBOE_INT_TXUNDER)
1319 {
1320 printk (KERN_WARNING DRIVER_NAME ": tx fifo underflow\n");
1321 }
1322 if (irqstat & OBOE_INT_RXOVER)
1323 {
1324 printk (KERN_WARNING DRIVER_NAME ": rx fifo overflow\n");
1325 }
1326 /* This must be useful for something... */
1327 if (irqstat & OBOE_INT_SIP)
1328 {
1329 self->int_sip++;
1330 IRDA_DEBUG (1, "%s.sip:%x(%x)%x\n", __func__
1331 ,self->int_sip,irqstat,self->txpending);
1332 }
1333 return IRQ_HANDLED;
1334 }
1335
1336
1337 static int
1338 toshoboe_net_open (struct net_device *dev)
1339 {
1340 struct toshoboe_cb *self;
1341 unsigned long flags;
1342 int rc;
1343
1344 IRDA_DEBUG (4, "%s()\n", __func__);
1345
1346 self = netdev_priv(dev);
1347
1348 if (self->async)
1349 return -EBUSY;
1350
1351 if (self->stopped)
1352 return 0;
1353
1354 rc = request_irq (self->io.irq, toshoboe_interrupt,
1355 IRQF_SHARED | IRQF_DISABLED, dev->name, self);
1356 if (rc)
1357 return rc;
1358
1359 spin_lock_irqsave(&self->spinlock, flags);
1360 toshoboe_startchip (self);
1361 spin_unlock_irqrestore(&self->spinlock, flags);
1362
1363 /* Ready to play! */
1364 netif_start_queue(dev);
1365
1366 /*
1367 * Open new IrLAP layer instance, now that everything should be
1368 * initialized properly
1369 */
1370 self->irlap = irlap_open (dev, &self->qos, driver_name);
1371
1372 self->irdad = 1;
1373
1374 return 0;
1375 }
1376
1377 static int
1378 toshoboe_net_close (struct net_device *dev)
1379 {
1380 struct toshoboe_cb *self;
1381
1382 IRDA_DEBUG (4, "%s()\n", __func__);
1383
1384 IRDA_ASSERT (dev != NULL, return -1; );
1385 self = netdev_priv(dev);
1386
1387 /* Stop device */
1388 netif_stop_queue(dev);
1389
1390 /* Stop and remove instance of IrLAP */
1391 if (self->irlap)
1392 irlap_close (self->irlap);
1393 self->irlap = NULL;
1394
1395 self->irdad = 0;
1396
1397 free_irq (self->io.irq, (void *) self);
1398
1399 if (!self->stopped)
1400 {
1401 toshoboe_stopchip (self);
1402 }
1403
1404 return 0;
1405 }
1406
1407 /*
1408 * Function toshoboe_net_ioctl (dev, rq, cmd)
1409 *
1410 * Process IOCTL commands for this device
1411 *
1412 */
1413 static int
1414 toshoboe_net_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1415 {
1416 struct if_irda_req *irq = (struct if_irda_req *) rq;
1417 struct toshoboe_cb *self;
1418 unsigned long flags;
1419 int ret = 0;
1420
1421 IRDA_ASSERT (dev != NULL, return -1; );
1422
1423 self = netdev_priv(dev);
1424
1425 IRDA_ASSERT (self != NULL, return -1; );
1426
1427 IRDA_DEBUG (5, "%s(), %s, (cmd=0x%X)\n", __func__, dev->name, cmd);
1428
1429 /* Disable interrupts & save flags */
1430 spin_lock_irqsave(&self->spinlock, flags);
1431
1432 switch (cmd)
1433 {
1434 case SIOCSBANDWIDTH: /* Set bandwidth */
1435 /* This function will also be used by IrLAP to change the
1436 * speed, so we still must allow for speed change within
1437 * interrupt context.
1438 */
1439 IRDA_DEBUG (1, "%s(BANDWIDTH), %s, (%X/%ld\n", __func__
1440 ,dev->name, INB (OBOE_STATUS), irq->ifr_baudrate );
1441 if (!in_interrupt () && !capable (CAP_NET_ADMIN)) {
1442 ret = -EPERM;
1443 goto out;
1444 }
1445
1446 /* self->speed=irq->ifr_baudrate; */
1447 /* toshoboe_setbaud(self); */
1448 /* Just change speed once - inserted by Paul Bristow */
1449 self->new_speed = irq->ifr_baudrate;
1450 break;
1451 case SIOCSMEDIABUSY: /* Set media busy */
1452 IRDA_DEBUG (1, "%s(MEDIABUSY), %s, (%X/%x)\n", __func__
1453 ,dev->name, INB (OBOE_STATUS), capable (CAP_NET_ADMIN) );
1454 if (!capable (CAP_NET_ADMIN)) {
1455 ret = -EPERM;
1456 goto out;
1457 }
1458 irda_device_set_media_busy (self->netdev, TRUE);
1459 break;
1460 case SIOCGRECEIVING: /* Check if we are receiving right now */
1461 irq->ifr_receiving = (INB (OBOE_STATUS) & OBOE_STATUS_RXBUSY) ? 1 : 0;
1462 IRDA_DEBUG (3, "%s(RECEIVING), %s, (%X/%x)\n", __func__
1463 ,dev->name, INB (OBOE_STATUS), irq->ifr_receiving );
1464 break;
1465 default:
1466 IRDA_DEBUG (1, "%s(?), %s, (cmd=0x%X)\n", __func__, dev->name, cmd);
1467 ret = -EOPNOTSUPP;
1468 }
1469 out:
1470 spin_unlock_irqrestore(&self->spinlock, flags);
1471 return ret;
1472
1473 }
1474
1475 MODULE_DESCRIPTION("Toshiba OBOE IrDA Device Driver");
1476 MODULE_AUTHOR("James McKenzie <james@fishsoup.dhs.org>");
1477 MODULE_LICENSE("GPL");
1478
1479 module_param (max_baud, int, 0);
1480 MODULE_PARM_DESC(max_baud, "Maximum baud rate");
1481
1482 #ifdef USE_PROBE
1483 module_param (do_probe, bool, 0);
1484 MODULE_PARM_DESC(do_probe, "Enable/disable chip probing and self-test");
1485 #endif
1486
1487 static void
1488 toshoboe_close (struct pci_dev *pci_dev)
1489 {
1490 int i;
1491 struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev);
1492
1493 IRDA_DEBUG (4, "%s()\n", __func__);
1494
1495 IRDA_ASSERT (self != NULL, return; );
1496
1497 if (!self->stopped)
1498 {
1499 toshoboe_stopchip (self);
1500 }
1501
1502 release_region (self->io.fir_base, self->io.fir_ext);
1503
1504 for (i = 0; i < TX_SLOTS; ++i)
1505 {
1506 kfree (self->tx_bufs[i]);
1507 self->tx_bufs[i] = NULL;
1508 }
1509
1510 for (i = 0; i < RX_SLOTS; ++i)
1511 {
1512 kfree (self->rx_bufs[i]);
1513 self->rx_bufs[i] = NULL;
1514 }
1515
1516 unregister_netdev(self->netdev);
1517
1518 kfree (self->ringbuf);
1519 self->ringbuf = NULL;
1520 self->ring = NULL;
1521
1522 free_netdev(self->netdev);
1523 }
1524
1525 static const struct net_device_ops toshoboe_netdev_ops = {
1526 .ndo_open = toshoboe_net_open,
1527 .ndo_stop = toshoboe_net_close,
1528 .ndo_start_xmit = toshoboe_hard_xmit,
1529 .ndo_do_ioctl = toshoboe_net_ioctl,
1530 };
1531
1532 static int
1533 toshoboe_open (struct pci_dev *pci_dev, const struct pci_device_id *pdid)
1534 {
1535 struct toshoboe_cb *self;
1536 struct net_device *dev;
1537 int i = 0;
1538 int ok = 0;
1539 int err;
1540
1541 IRDA_DEBUG (4, "%s()\n", __func__);
1542
1543 if ((err=pci_enable_device(pci_dev)))
1544 return err;
1545
1546 dev = alloc_irdadev(sizeof (struct toshoboe_cb));
1547 if (dev == NULL)
1548 {
1549 printk (KERN_ERR DRIVER_NAME ": can't allocate memory for "
1550 "IrDA control block\n");
1551 return -ENOMEM;
1552 }
1553
1554 self = netdev_priv(dev);
1555 self->netdev = dev;
1556 self->pdev = pci_dev;
1557 self->base = pci_resource_start(pci_dev,0);
1558
1559 self->io.fir_base = self->base;
1560 self->io.fir_ext = OBOE_IO_EXTENT;
1561 self->io.irq = pci_dev->irq;
1562 self->io.irqflags = IRQF_SHARED | IRQF_DISABLED;
1563
1564 self->speed = self->io.speed = 9600;
1565 self->async = 0;
1566
1567 /* Lock the port that we need */
1568 if (NULL==request_region (self->io.fir_base, self->io.fir_ext, driver_name))
1569 {
1570 printk (KERN_ERR DRIVER_NAME ": can't get iobase of 0x%03x\n"
1571 ,self->io.fir_base);
1572 err = -EBUSY;
1573 goto freeself;
1574 }
1575
1576 spin_lock_init(&self->spinlock);
1577
1578 irda_init_max_qos_capabilies (&self->qos);
1579 self->qos.baud_rate.bits = 0;
1580
1581 if (max_baud >= 2400)
1582 self->qos.baud_rate.bits |= IR_2400;
1583 /*if (max_baud>=4800) idev->qos.baud_rate.bits|=IR_4800; */
1584 if (max_baud >= 9600)
1585 self->qos.baud_rate.bits |= IR_9600;
1586 if (max_baud >= 19200)
1587 self->qos.baud_rate.bits |= IR_19200;
1588 if (max_baud >= 115200)
1589 self->qos.baud_rate.bits |= IR_115200;
1590 #ifdef USE_MIR
1591 if (max_baud >= 1152000)
1592 {
1593 self->qos.baud_rate.bits |= IR_1152000;
1594 }
1595 #endif
1596 if (max_baud >= 4000000)
1597 {
1598 self->qos.baud_rate.bits |= (IR_4000000 << 8);
1599 }
1600
1601 /*FIXME: work this out... */
1602 self->qos.min_turn_time.bits = 0xff;
1603
1604 irda_qos_bits_to_value (&self->qos);
1605
1606 /* Allocate twice the size to guarantee alignment */
1607 self->ringbuf = kmalloc(OBOE_RING_LEN << 1, GFP_KERNEL);
1608 if (!self->ringbuf)
1609 {
1610 printk (KERN_ERR DRIVER_NAME ": can't allocate DMA buffers\n");
1611 err = -ENOMEM;
1612 goto freeregion;
1613 }
1614
1615 #if (BITS_PER_LONG == 64)
1616 #error broken on 64-bit: casts pointer to 32-bit, and then back to pointer.
1617 #endif
1618
1619 /*We need to align the taskfile on a taskfile size boundary */
1620 {
1621 unsigned long addr;
1622
1623 addr = (__u32) self->ringbuf;
1624 addr &= ~(OBOE_RING_LEN - 1);
1625 addr += OBOE_RING_LEN;
1626 self->ring = (struct OboeRing *) addr;
1627 }
1628
1629 memset (self->ring, 0, OBOE_RING_LEN);
1630 self->io.mem_base = (__u32) self->ring;
1631
1632 ok = 1;
1633 for (i = 0; i < TX_SLOTS; ++i)
1634 {
1635 self->tx_bufs[i] = kmalloc (TX_BUF_SZ, GFP_KERNEL);
1636 if (!self->tx_bufs[i])
1637 ok = 0;
1638 }
1639
1640 for (i = 0; i < RX_SLOTS; ++i)
1641 {
1642 self->rx_bufs[i] = kmalloc (RX_BUF_SZ, GFP_KERNEL);
1643 if (!self->rx_bufs[i])
1644 ok = 0;
1645 }
1646
1647 if (!ok)
1648 {
1649 printk (KERN_ERR DRIVER_NAME ": can't allocate rx/tx buffers\n");
1650 err = -ENOMEM;
1651 goto freebufs;
1652 }
1653
1654
1655 #ifdef USE_PROBE
1656 if (do_probe)
1657 if (!toshoboe_probe (self))
1658 {
1659 err = -ENODEV;
1660 goto freebufs;
1661 }
1662 #endif
1663
1664 SET_NETDEV_DEV(dev, &pci_dev->dev);
1665 dev->netdev_ops = &toshoboe_netdev_ops;
1666
1667 err = register_netdev(dev);
1668 if (err)
1669 {
1670 printk (KERN_ERR DRIVER_NAME ": register_netdev() failed\n");
1671 err = -ENOMEM;
1672 goto freebufs;
1673 }
1674 printk (KERN_INFO "IrDA: Registered device %s\n", dev->name);
1675
1676 pci_set_drvdata(pci_dev,self);
1677
1678 printk (KERN_INFO DRIVER_NAME ": Using multiple tasks\n");
1679
1680 return 0;
1681
1682 freebufs:
1683 for (i = 0; i < TX_SLOTS; ++i)
1684 kfree (self->tx_bufs[i]);
1685 for (i = 0; i < RX_SLOTS; ++i)
1686 kfree (self->rx_bufs[i]);
1687 kfree(self->ringbuf);
1688
1689 freeregion:
1690 release_region (self->io.fir_base, self->io.fir_ext);
1691
1692 freeself:
1693 free_netdev(dev);
1694
1695 return err;
1696 }
1697
1698 static int
1699 toshoboe_gotosleep (struct pci_dev *pci_dev, pm_message_t crap)
1700 {
1701 struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev);
1702 unsigned long flags;
1703 int i = 10;
1704
1705 IRDA_DEBUG (4, "%s()\n", __func__);
1706
1707 if (!self || self->stopped)
1708 return 0;
1709
1710 if ((!self->irdad) && (!self->async))
1711 return 0;
1712
1713 /* Flush all packets */
1714 while ((i--) && (self->txpending))
1715 udelay (10000);
1716
1717 spin_lock_irqsave(&self->spinlock, flags);
1718
1719 toshoboe_stopchip (self);
1720 self->stopped = 1;
1721 self->txpending = 0;
1722
1723 spin_unlock_irqrestore(&self->spinlock, flags);
1724 return 0;
1725 }
1726
1727 static int
1728 toshoboe_wakeup (struct pci_dev *pci_dev)
1729 {
1730 struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev);
1731 unsigned long flags;
1732
1733 IRDA_DEBUG (4, "%s()\n", __func__);
1734
1735 if (!self || !self->stopped)
1736 return 0;
1737
1738 if ((!self->irdad) && (!self->async))
1739 return 0;
1740
1741 spin_lock_irqsave(&self->spinlock, flags);
1742
1743 toshoboe_startchip (self);
1744 self->stopped = 0;
1745
1746 netif_wake_queue(self->netdev);
1747 spin_unlock_irqrestore(&self->spinlock, flags);
1748 return 0;
1749 }
1750
1751 static struct pci_driver donauboe_pci_driver = {
1752 .name = "donauboe",
1753 .id_table = toshoboe_pci_tbl,
1754 .probe = toshoboe_open,
1755 .remove = toshoboe_close,
1756 .suspend = toshoboe_gotosleep,
1757 .resume = toshoboe_wakeup
1758 };
1759
1760 static int __init
1761 donauboe_init (void)
1762 {
1763 return pci_register_driver(&donauboe_pci_driver);
1764 }
1765
1766 static void __exit
1767 donauboe_cleanup (void)
1768 {
1769 pci_unregister_driver(&donauboe_pci_driver);
1770 }
1771
1772 module_init(donauboe_init);
1773 module_exit(donauboe_cleanup);
kernel source for telekom puls (alcatel/mediatek)