tjh.dev
Linux kernel mirror (for testing)
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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
187static struct pci_device_id 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};
192MODULE_DEVICE_TABLE(pci, toshoboe_pci_tbl);
193
194#define DRIVER_NAME "toshoboe"
195static char *driver_name = DRIVER_NAME;
196
197static int max_baud = 4000000;
198#ifdef USE_PROBE
199static int do_probe = 0;
200#endif
201
202
203/**********************************************************************/
204static int
205toshoboe_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
226static unsigned char dump[50];
227static void
228_dumpbufs (unsigned char *data, int len, char tete)
229{
230int i,j;
231char head=tete;
232for (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 */
243static void
244toshoboe_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 */
292static void
293toshoboe_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 */
305static void
306toshoboe_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 */
337static void
338toshoboe_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 */
347static void
348toshoboe_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 */
482static void
483toshoboe_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 */
490static void
491toshoboe_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
513static void
514toshoboe_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 */
526static void
527toshoboe_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 */
548static void
549toshoboe_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
606static void
607toshoboe_isntstuck (struct toshoboe_cb *self)
608{
609}
610
611static void
612toshoboe_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 */
630static int
631toshoboe_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
660static void
661toshoboe_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
670static void
671toshoboe_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
680static inline int
681stuff_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
701static irqreturn_t
702toshoboe_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
747static int
748toshoboe_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
784static int
785toshoboe_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
794static int
795toshoboe_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
805static int
806toshoboe_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
816static int
817toshoboe_probe (struct toshoboe_cb *self)
818{
819 int i, j, n;
820#ifdef USE_MIR
821 int bauds[] = { 9600, 115200, 4000000, 1152000 };
822#else
823 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 */
973static netdev_tx_t
974toshoboe_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 dev->trans_start = jiffies;
1006
1007 /* Check if we need to change the speed */
1008 /* But not now. Wait after transmission if mtt not required */
1009 speed=irda_get_next_speed(skb);
1010 if ((speed != self->io.speed) && (speed != -1))
1011 {
1012 spin_lock_irqsave(&self->spinlock, flags);
1013
1014 if (self->txpending || skb->len)
1015 {
1016 self->new_speed = speed;
1017 IRDA_DEBUG (1, "%s: Queued TxDone scheduled speed change %d\n" ,
1018 __func__, speed);
1019 /* if no data, that's all! */
1020 if (!skb->len)
1021 {
1022 spin_unlock_irqrestore(&self->spinlock, flags);
1023 dev_kfree_skb (skb);
1024 return NETDEV_TX_OK;
1025 }
1026 /* True packet, go on, but */
1027 /* do not accept anything before change speed execution */
1028 netif_stop_queue(dev);
1029 /* ready to process TxDone interrupt */
1030 spin_unlock_irqrestore(&self->spinlock, flags);
1031 }
1032 else
1033 {
1034 /* idle and no data, change speed now */
1035 self->speed = speed;
1036 toshoboe_setbaud (self);
1037 spin_unlock_irqrestore(&self->spinlock, flags);
1038 dev_kfree_skb (skb);
1039 return NETDEV_TX_OK;
1040 }
1041
1042 }
1043
1044 if ((mtt = irda_get_mtt(skb)))
1045 {
1046 /* This is fair since the queue should be empty anyway */
1047 spin_lock_irqsave(&self->spinlock, flags);
1048
1049 if (self->txpending)
1050 {
1051 spin_unlock_irqrestore(&self->spinlock, flags);
1052 return NETDEV_TX_BUSY;
1053 }
1054
1055 /* If in SIR mode we need to generate a string of XBOFs */
1056 /* In MIR and FIR we need to generate a string of data */
1057 /* which we will add a wrong checksum to */
1058
1059 mtt = toshoboe_makemttpacket (self, self->tx_bufs[self->txs], mtt);
1060 IRDA_DEBUG (1, "%s.mtt:%x(%x)%d\n", __func__
1061 ,skb->len,mtt,self->txpending);
1062 if (mtt)
1063 {
1064 self->ring->tx[self->txs].len = mtt & 0xfff;
1065
1066 ctl = OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX;
1067 if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_FIRON)
1068 {
1069 ctl |= OBOE_CTL_TX_BAD_CRC | OBOE_CTL_TX_SIP ;
1070 }
1071#ifdef USE_MIR
1072 else if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_MIRON)
1073 {
1074 ctl |= OBOE_CTL_TX_BAD_CRC;
1075 }
1076#endif
1077 self->ring->tx[self->txs].control = ctl;
1078
1079 OUTB (0x0, OBOE_ENABLEH);
1080 /* It is only a timer. Do not send mtt packet outside! */
1081 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP);
1082
1083 self->txpending++;
1084
1085 self->txs++;
1086 self->txs %= TX_SLOTS;
1087
1088 }
1089 else
1090 {
1091 printk(KERN_ERR DRIVER_NAME ": problem with mtt packet - ignored\n");
1092 }
1093 spin_unlock_irqrestore(&self->spinlock, flags);
1094 }
1095
1096#ifdef DUMP_PACKETS
1097dumpbufs(skb->data,skb->len,'>');
1098#endif
1099
1100 spin_lock_irqsave(&self->spinlock, flags);
1101
1102 if (self->ring->tx[self->txs].control & OBOE_CTL_TX_HW_OWNS)
1103 {
1104 IRDA_DEBUG (0, "%s.ful:%x(%x)%x\n", __func__
1105 ,skb->len, self->ring->tx[self->txs].control, self->txpending);
1106 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX);
1107 spin_unlock_irqrestore(&self->spinlock, flags);
1108 return NETDEV_TX_BUSY;
1109 }
1110
1111 if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_SIRON)
1112 {
1113 len = async_wrap_skb (skb, self->tx_bufs[self->txs], TX_BUF_SZ);
1114 }
1115 else
1116 {
1117 len = skb->len;
1118 skb_copy_from_linear_data(skb, self->tx_bufs[self->txs], len);
1119 }
1120 self->ring->tx[self->txs].len = len & 0x0fff;
1121
1122 /*Sometimes the HW doesn't see us assert RTCENTX in the interrupt code */
1123 /*later this plays safe, we garuntee the last packet to be transmitted */
1124 /*has RTCENTX set */
1125
1126 ctl = OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX;
1127 if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_FIRON)
1128 {
1129 ctl |= OBOE_CTL_TX_SIP ;
1130 }
1131 self->ring->tx[self->txs].control = ctl;
1132
1133 /* If transmitter is idle start in one-shot mode */
1134
1135 if (!self->txpending)
1136 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX);
1137
1138 self->txpending++;
1139
1140 self->txs++;
1141 self->txs %= TX_SLOTS;
1142
1143 spin_unlock_irqrestore(&self->spinlock, flags);
1144 dev_kfree_skb (skb);
1145
1146 return NETDEV_TX_OK;
1147}
1148
1149/*interrupt handler */
1150static irqreturn_t
1151toshoboe_interrupt (int irq, void *dev_id)
1152{
1153 struct toshoboe_cb *self = dev_id;
1154 __u8 irqstat;
1155 struct sk_buff *skb = NULL;
1156
1157 irqstat = INB (OBOE_ISR);
1158
1159/* was it us */
1160 if (!(irqstat & OBOE_INT_MASK))
1161 return IRQ_NONE;
1162
1163/* Ack all the interrupts */
1164 OUTB (irqstat, OBOE_ISR);
1165
1166 toshoboe_isntstuck (self);
1167
1168/* Txdone */
1169 if (irqstat & OBOE_INT_TXDONE)
1170 {
1171 int txp, txpc;
1172 int i;
1173
1174 txp = self->txpending;
1175 self->txpending = 0;
1176
1177 for (i = 0; i < TX_SLOTS; ++i)
1178 {
1179 if (self->ring->tx[i].control & OBOE_CTL_TX_HW_OWNS)
1180 self->txpending++;
1181 }
1182 IRDA_DEBUG (1, "%s.txd(%x)%x/%x\n", __func__
1183 ,irqstat,txp,self->txpending);
1184
1185 txp = INB (OBOE_TXSLOT) & OBOE_SLOT_MASK;
1186
1187 /* Got anything queued ? start it together */
1188 if (self->ring->tx[txp].control & OBOE_CTL_TX_HW_OWNS)
1189 {
1190 txpc = txp;
1191#ifdef OPTIMIZE_TX
1192 while (self->ring->tx[txpc].control & OBOE_CTL_TX_HW_OWNS)
1193 {
1194 txp = txpc;
1195 txpc++;
1196 txpc %= TX_SLOTS;
1197 self->netdev->stats.tx_packets++;
1198 if (self->ring->tx[txpc].control & OBOE_CTL_TX_HW_OWNS)
1199 self->ring->tx[txp].control &= ~OBOE_CTL_TX_RTCENTX;
1200 }
1201 self->netdev->stats.tx_packets--;
1202#else
1203 self->netdev->stats.tx_packets++;
1204#endif
1205 toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX);
1206 }
1207
1208 if ((!self->txpending) && (self->new_speed))
1209 {
1210 self->speed = self->new_speed;
1211 IRDA_DEBUG (1, "%s: Executed TxDone scheduled speed change %d\n",
1212 __func__, self->speed);
1213 toshoboe_setbaud (self);
1214 }
1215
1216 /* Tell network layer that we want more frames */
1217 if (!self->new_speed)
1218 netif_wake_queue(self->netdev);
1219 }
1220
1221 if (irqstat & OBOE_INT_RXDONE)
1222 {
1223 while (!(self->ring->rx[self->rxs].control & OBOE_CTL_RX_HW_OWNS))
1224 {
1225 int len = self->ring->rx[self->rxs].len;
1226 skb = NULL;
1227 IRDA_DEBUG (3, "%s.rcv:%x(%x)\n", __func__
1228 ,len,self->ring->rx[self->rxs].control);
1229
1230#ifdef DUMP_PACKETS
1231dumpbufs(self->rx_bufs[self->rxs],len,'<');
1232#endif
1233
1234 if (self->ring->rx[self->rxs].control == 0)
1235 {
1236 __u8 enable = INB (OBOE_ENABLEH);
1237
1238 /* In SIR mode we need to check the CRC as this */
1239 /* hasn't been done by the hardware */
1240 if (enable & OBOE_ENABLEH_SIRON)
1241 {
1242 if (!toshoboe_checkfcs (self->rx_bufs[self->rxs], len))
1243 len = 0;
1244 /*Trim off the CRC */
1245 if (len > 1)
1246 len -= 2;
1247 else
1248 len = 0;
1249 IRDA_DEBUG (1, "%s.SIR:%x(%x)\n", __func__, len,enable);
1250 }
1251
1252#ifdef USE_MIR
1253 else if (enable & OBOE_ENABLEH_MIRON)
1254 {
1255 if (len > 1)
1256 len -= 2;
1257 else
1258 len = 0;
1259 IRDA_DEBUG (2, "%s.MIR:%x(%x)\n", __func__, len,enable);
1260 }
1261#endif
1262 else if (enable & OBOE_ENABLEH_FIRON)
1263 {
1264 if (len > 3)
1265 len -= 4; /*FIXME: check this */
1266 else
1267 len = 0;
1268 IRDA_DEBUG (1, "%s.FIR:%x(%x)\n", __func__, len,enable);
1269 }
1270 else
1271 IRDA_DEBUG (0, "%s.?IR:%x(%x)\n", __func__, len,enable);
1272
1273 if (len)
1274 {
1275 skb = dev_alloc_skb (len + 1);
1276 if (skb)
1277 {
1278 skb_reserve (skb, 1);
1279
1280 skb_put (skb, len);
1281 skb_copy_to_linear_data(skb, self->rx_bufs[self->rxs],
1282 len);
1283 self->netdev->stats.rx_packets++;
1284 skb->dev = self->netdev;
1285 skb_reset_mac_header(skb);
1286 skb->protocol = htons (ETH_P_IRDA);
1287 }
1288 else
1289 {
1290 printk (KERN_INFO
1291 "%s(), memory squeeze, dropping frame.\n",
1292 __func__);
1293 }
1294 }
1295 }
1296 else
1297 {
1298 /* TODO: =========================================== */
1299 /* if OBOE_CTL_RX_LENGTH, our buffers are too small */
1300 /* (MIR or FIR) data is lost. */
1301 /* (SIR) data is splitted in several slots. */
1302 /* we have to join all the received buffers received */
1303 /*in a large buffer before checking CRC. */
1304 IRDA_DEBUG (0, "%s.err:%x(%x)\n", __func__
1305 ,len,self->ring->rx[self->rxs].control);
1306 }
1307
1308 self->ring->rx[self->rxs].len = 0x0;
1309 self->ring->rx[self->rxs].control = OBOE_CTL_RX_HW_OWNS;
1310
1311 self->rxs++;
1312 self->rxs %= RX_SLOTS;
1313
1314 if (skb)
1315 netif_rx (skb);
1316
1317 }
1318 }
1319
1320 if (irqstat & OBOE_INT_TXUNDER)
1321 {
1322 printk (KERN_WARNING DRIVER_NAME ": tx fifo underflow\n");
1323 }
1324 if (irqstat & OBOE_INT_RXOVER)
1325 {
1326 printk (KERN_WARNING DRIVER_NAME ": rx fifo overflow\n");
1327 }
1328/* This must be useful for something... */
1329 if (irqstat & OBOE_INT_SIP)
1330 {
1331 self->int_sip++;
1332 IRDA_DEBUG (1, "%s.sip:%x(%x)%x\n", __func__
1333 ,self->int_sip,irqstat,self->txpending);
1334 }
1335 return IRQ_HANDLED;
1336}
1337
1338
1339static int
1340toshoboe_net_open (struct net_device *dev)
1341{
1342 struct toshoboe_cb *self;
1343 unsigned long flags;
1344 int rc;
1345
1346 IRDA_DEBUG (4, "%s()\n", __func__);
1347
1348 self = netdev_priv(dev);
1349
1350 if (self->async)
1351 return -EBUSY;
1352
1353 if (self->stopped)
1354 return 0;
1355
1356 rc = request_irq (self->io.irq, toshoboe_interrupt,
1357 IRQF_SHARED | IRQF_DISABLED, dev->name, self);
1358 if (rc)
1359 return rc;
1360
1361 spin_lock_irqsave(&self->spinlock, flags);
1362 toshoboe_startchip (self);
1363 spin_unlock_irqrestore(&self->spinlock, flags);
1364
1365 /* Ready to play! */
1366 netif_start_queue(dev);
1367
1368 /*
1369 * Open new IrLAP layer instance, now that everything should be
1370 * initialized properly
1371 */
1372 self->irlap = irlap_open (dev, &self->qos, driver_name);
1373
1374 self->irdad = 1;
1375
1376 return 0;
1377}
1378
1379static int
1380toshoboe_net_close (struct net_device *dev)
1381{
1382 struct toshoboe_cb *self;
1383
1384 IRDA_DEBUG (4, "%s()\n", __func__);
1385
1386 IRDA_ASSERT (dev != NULL, return -1; );
1387 self = netdev_priv(dev);
1388
1389 /* Stop device */
1390 netif_stop_queue(dev);
1391
1392 /* Stop and remove instance of IrLAP */
1393 if (self->irlap)
1394 irlap_close (self->irlap);
1395 self->irlap = NULL;
1396
1397 self->irdad = 0;
1398
1399 free_irq (self->io.irq, (void *) self);
1400
1401 if (!self->stopped)
1402 {
1403 toshoboe_stopchip (self);
1404 }
1405
1406 return 0;
1407}
1408
1409/*
1410 * Function toshoboe_net_ioctl (dev, rq, cmd)
1411 *
1412 * Process IOCTL commands for this device
1413 *
1414 */
1415static int
1416toshoboe_net_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1417{
1418 struct if_irda_req *irq = (struct if_irda_req *) rq;
1419 struct toshoboe_cb *self;
1420 unsigned long flags;
1421 int ret = 0;
1422
1423 IRDA_ASSERT (dev != NULL, return -1; );
1424
1425 self = netdev_priv(dev);
1426
1427 IRDA_ASSERT (self != NULL, return -1; );
1428
1429 IRDA_DEBUG (5, "%s(), %s, (cmd=0x%X)\n", __func__, dev->name, cmd);
1430
1431 /* Disable interrupts & save flags */
1432 spin_lock_irqsave(&self->spinlock, flags);
1433
1434 switch (cmd)
1435 {
1436 case SIOCSBANDWIDTH: /* Set bandwidth */
1437 /* This function will also be used by IrLAP to change the
1438 * speed, so we still must allow for speed change within
1439 * interrupt context.
1440 */
1441 IRDA_DEBUG (1, "%s(BANDWIDTH), %s, (%X/%ld\n", __func__
1442 ,dev->name, INB (OBOE_STATUS), irq->ifr_baudrate );
1443 if (!in_interrupt () && !capable (CAP_NET_ADMIN)) {
1444 ret = -EPERM;
1445 goto out;
1446 }
1447
1448 /* self->speed=irq->ifr_baudrate; */
1449 /* toshoboe_setbaud(self); */
1450 /* Just change speed once - inserted by Paul Bristow */
1451 self->new_speed = irq->ifr_baudrate;
1452 break;
1453 case SIOCSMEDIABUSY: /* Set media busy */
1454 IRDA_DEBUG (1, "%s(MEDIABUSY), %s, (%X/%x)\n", __func__
1455 ,dev->name, INB (OBOE_STATUS), capable (CAP_NET_ADMIN) );
1456 if (!capable (CAP_NET_ADMIN)) {
1457 ret = -EPERM;
1458 goto out;
1459 }
1460 irda_device_set_media_busy (self->netdev, TRUE);
1461 break;
1462 case SIOCGRECEIVING: /* Check if we are receiving right now */
1463 irq->ifr_receiving = (INB (OBOE_STATUS) & OBOE_STATUS_RXBUSY) ? 1 : 0;
1464 IRDA_DEBUG (3, "%s(RECEIVING), %s, (%X/%x)\n", __func__
1465 ,dev->name, INB (OBOE_STATUS), irq->ifr_receiving );
1466 break;
1467 default:
1468 IRDA_DEBUG (1, "%s(?), %s, (cmd=0x%X)\n", __func__, dev->name, cmd);
1469 ret = -EOPNOTSUPP;
1470 }
1471out:
1472 spin_unlock_irqrestore(&self->spinlock, flags);
1473 return ret;
1474
1475}
1476
1477MODULE_DESCRIPTION("Toshiba OBOE IrDA Device Driver");
1478MODULE_AUTHOR("James McKenzie <james@fishsoup.dhs.org>");
1479MODULE_LICENSE("GPL");
1480
1481module_param (max_baud, int, 0);
1482MODULE_PARM_DESC(max_baud, "Maximum baud rate");
1483
1484#ifdef USE_PROBE
1485module_param (do_probe, bool, 0);
1486MODULE_PARM_DESC(do_probe, "Enable/disable chip probing and self-test");
1487#endif
1488
1489static void
1490toshoboe_close (struct pci_dev *pci_dev)
1491{
1492 int i;
1493 struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev);
1494
1495 IRDA_DEBUG (4, "%s()\n", __func__);
1496
1497 IRDA_ASSERT (self != NULL, return; );
1498
1499 if (!self->stopped)
1500 {
1501 toshoboe_stopchip (self);
1502 }
1503
1504 release_region (self->io.fir_base, self->io.fir_ext);
1505
1506 for (i = 0; i < TX_SLOTS; ++i)
1507 {
1508 kfree (self->tx_bufs[i]);
1509 self->tx_bufs[i] = NULL;
1510 }
1511
1512 for (i = 0; i < RX_SLOTS; ++i)
1513 {
1514 kfree (self->rx_bufs[i]);
1515 self->rx_bufs[i] = NULL;
1516 }
1517
1518 unregister_netdev(self->netdev);
1519
1520 kfree (self->ringbuf);
1521 self->ringbuf = NULL;
1522 self->ring = NULL;
1523
1524 free_netdev(self->netdev);
1525}
1526
1527static const struct net_device_ops toshoboe_netdev_ops = {
1528 .ndo_open = toshoboe_net_open,
1529 .ndo_stop = toshoboe_net_close,
1530 .ndo_start_xmit = toshoboe_hard_xmit,
1531 .ndo_do_ioctl = toshoboe_net_ioctl,
1532};
1533
1534static int
1535toshoboe_open (struct pci_dev *pci_dev, const struct pci_device_id *pdid)
1536{
1537 struct toshoboe_cb *self;
1538 struct net_device *dev;
1539 int i = 0;
1540 int ok = 0;
1541 int err;
1542
1543 IRDA_DEBUG (4, "%s()\n", __func__);
1544
1545 if ((err=pci_enable_device(pci_dev)))
1546 return err;
1547
1548 dev = alloc_irdadev(sizeof (struct toshoboe_cb));
1549 if (dev == NULL)
1550 {
1551 printk (KERN_ERR DRIVER_NAME ": can't allocate memory for "
1552 "IrDA control block\n");
1553 return -ENOMEM;
1554 }
1555
1556 self = netdev_priv(dev);
1557 self->netdev = dev;
1558 self->pdev = pci_dev;
1559 self->base = pci_resource_start(pci_dev,0);
1560
1561 self->io.fir_base = self->base;
1562 self->io.fir_ext = OBOE_IO_EXTENT;
1563 self->io.irq = pci_dev->irq;
1564 self->io.irqflags = IRQF_SHARED | IRQF_DISABLED;
1565
1566 self->speed = self->io.speed = 9600;
1567 self->async = 0;
1568
1569 /* Lock the port that we need */
1570 if (NULL==request_region (self->io.fir_base, self->io.fir_ext, driver_name))
1571 {
1572 printk (KERN_ERR DRIVER_NAME ": can't get iobase of 0x%03x\n"
1573 ,self->io.fir_base);
1574 err = -EBUSY;
1575 goto freeself;
1576 }
1577
1578 spin_lock_init(&self->spinlock);
1579
1580 irda_init_max_qos_capabilies (&self->qos);
1581 self->qos.baud_rate.bits = 0;
1582
1583 if (max_baud >= 2400)
1584 self->qos.baud_rate.bits |= IR_2400;
1585 /*if (max_baud>=4800) idev->qos.baud_rate.bits|=IR_4800; */
1586 if (max_baud >= 9600)
1587 self->qos.baud_rate.bits |= IR_9600;
1588 if (max_baud >= 19200)
1589 self->qos.baud_rate.bits |= IR_19200;
1590 if (max_baud >= 115200)
1591 self->qos.baud_rate.bits |= IR_115200;
1592#ifdef USE_MIR
1593 if (max_baud >= 1152000)
1594 {
1595 self->qos.baud_rate.bits |= IR_1152000;
1596 }
1597#endif
1598 if (max_baud >= 4000000)
1599 {
1600 self->qos.baud_rate.bits |= (IR_4000000 << 8);
1601 }
1602
1603 /*FIXME: work this out... */
1604 self->qos.min_turn_time.bits = 0xff;
1605
1606 irda_qos_bits_to_value (&self->qos);
1607
1608 /* Allocate twice the size to guarantee alignment */
1609 self->ringbuf = kmalloc(OBOE_RING_LEN << 1, GFP_KERNEL);
1610 if (!self->ringbuf)
1611 {
1612 printk (KERN_ERR DRIVER_NAME ": can't allocate DMA buffers\n");
1613 err = -ENOMEM;
1614 goto freeregion;
1615 }
1616
1617#if (BITS_PER_LONG == 64)
1618#error broken on 64-bit: casts pointer to 32-bit, and then back to pointer.
1619#endif
1620
1621 /*We need to align the taskfile on a taskfile size boundary */
1622 {
1623 unsigned long addr;
1624
1625 addr = (__u32) self->ringbuf;
1626 addr &= ~(OBOE_RING_LEN - 1);
1627 addr += OBOE_RING_LEN;
1628 self->ring = (struct OboeRing *) addr;
1629 }
1630
1631 memset (self->ring, 0, OBOE_RING_LEN);
1632 self->io.mem_base = (__u32) self->ring;
1633
1634 ok = 1;
1635 for (i = 0; i < TX_SLOTS; ++i)
1636 {
1637 self->tx_bufs[i] = kmalloc (TX_BUF_SZ, GFP_KERNEL);
1638 if (!self->tx_bufs[i])
1639 ok = 0;
1640 }
1641
1642 for (i = 0; i < RX_SLOTS; ++i)
1643 {
1644 self->rx_bufs[i] = kmalloc (RX_BUF_SZ, GFP_KERNEL);
1645 if (!self->rx_bufs[i])
1646 ok = 0;
1647 }
1648
1649 if (!ok)
1650 {
1651 printk (KERN_ERR DRIVER_NAME ": can't allocate rx/tx buffers\n");
1652 err = -ENOMEM;
1653 goto freebufs;
1654 }
1655
1656
1657#ifdef USE_PROBE
1658 if (do_probe)
1659 if (!toshoboe_probe (self))
1660 {
1661 err = -ENODEV;
1662 goto freebufs;
1663 }
1664#endif
1665
1666 SET_NETDEV_DEV(dev, &pci_dev->dev);
1667 dev->netdev_ops = &toshoboe_netdev_ops;
1668
1669 err = register_netdev(dev);
1670 if (err)
1671 {
1672 printk (KERN_ERR DRIVER_NAME ": register_netdev() failed\n");
1673 err = -ENOMEM;
1674 goto freebufs;
1675 }
1676 printk (KERN_INFO "IrDA: Registered device %s\n", dev->name);
1677
1678 pci_set_drvdata(pci_dev,self);
1679
1680 printk (KERN_INFO DRIVER_NAME ": Using multiple tasks\n");
1681
1682 return 0;
1683
1684freebufs:
1685 for (i = 0; i < TX_SLOTS; ++i)
1686 kfree (self->tx_bufs[i]);
1687 for (i = 0; i < RX_SLOTS; ++i)
1688 kfree (self->rx_bufs[i]);
1689 kfree(self->ringbuf);
1690
1691freeregion:
1692 release_region (self->io.fir_base, self->io.fir_ext);
1693
1694freeself:
1695 free_netdev(dev);
1696
1697 return err;
1698}
1699
1700static int
1701toshoboe_gotosleep (struct pci_dev *pci_dev, pm_message_t crap)
1702{
1703 struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev);
1704 unsigned long flags;
1705 int i = 10;
1706
1707 IRDA_DEBUG (4, "%s()\n", __func__);
1708
1709 if (!self || self->stopped)
1710 return 0;
1711
1712 if ((!self->irdad) && (!self->async))
1713 return 0;
1714
1715/* Flush all packets */
1716 while ((i--) && (self->txpending))
1717 udelay (10000);
1718
1719 spin_lock_irqsave(&self->spinlock, flags);
1720
1721 toshoboe_stopchip (self);
1722 self->stopped = 1;
1723 self->txpending = 0;
1724
1725 spin_unlock_irqrestore(&self->spinlock, flags);
1726 return 0;
1727}
1728
1729static int
1730toshoboe_wakeup (struct pci_dev *pci_dev)
1731{
1732 struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev);
1733 unsigned long flags;
1734
1735 IRDA_DEBUG (4, "%s()\n", __func__);
1736
1737 if (!self || !self->stopped)
1738 return 0;
1739
1740 if ((!self->irdad) && (!self->async))
1741 return 0;
1742
1743 spin_lock_irqsave(&self->spinlock, flags);
1744
1745 toshoboe_startchip (self);
1746 self->stopped = 0;
1747
1748 netif_wake_queue(self->netdev);
1749 spin_unlock_irqrestore(&self->spinlock, flags);
1750 return 0;
1751}
1752
1753static struct pci_driver donauboe_pci_driver = {
1754 .name = "donauboe",
1755 .id_table = toshoboe_pci_tbl,
1756 .probe = toshoboe_open,
1757 .remove = toshoboe_close,
1758 .suspend = toshoboe_gotosleep,
1759 .resume = toshoboe_wakeup
1760};
1761
1762static int __init
1763donauboe_init (void)
1764{
1765 return pci_register_driver(&donauboe_pci_driver);
1766}
1767
1768static void __exit
1769donauboe_cleanup (void)
1770{
1771 pci_unregister_driver(&donauboe_pci_driver);
1772}
1773
1774module_init(donauboe_init);
1775module_exit(donauboe_cleanup);