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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [net/] [irda/] [ali-ircc.c] - Blame information for rev 62

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1 62 marcus.erl 
/*********************************************************************
2 
 *
3 
 * Filename:      ali-ircc.h
4 
 * Version:       0.5
5 
 * Description:   Driver for the ALI M1535D and M1543C FIR Controller
6 
 * Status:        Experimental.
7 
 * Author:        Benjamin Kong <benjamin_kong@ali.com.tw>
8 
 * Created at:    2000/10/16 03:46PM
9 
 * Modified at:   2001/1/3 02:55PM
10 
 * Modified by:   Benjamin Kong <benjamin_kong@ali.com.tw>
11 
 * Modified at:   2003/11/6 and support for ALi south-bridge chipsets M1563
12 
 * Modified by:   Clear Zhang <clear_zhang@ali.com.tw>
13 
 *
14 
 *     Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw>
15 
 *     All Rights Reserved
16 
 *
17 
 *     This program is free software; you can redistribute it and/or
18 
 *     modify it under the terms of the GNU General Public License as
19 
 *     published by the Free Software Foundation; either version 2 of
20 
 *     the License, or (at your option) any later version.
21 
 *
22 
 ********************************************************************/
23 
 
24 
#include <linux/module.h>
25 
 
26 
#include <linux/kernel.h>
27 
#include <linux/types.h>
28 
#include <linux/skbuff.h>
29 
#include <linux/netdevice.h>
30 
#include <linux/ioport.h>
31 
#include <linux/delay.h>
32 
#include <linux/slab.h>
33 
#include <linux/init.h>
34 
#include <linux/rtnetlink.h>
35 
#include <linux/serial_reg.h>
36 
#include <linux/dma-mapping.h>
37 
#include <linux/platform_device.h>
38 
 
39 
#include <asm/io.h>
40 
#include <asm/dma.h>
41 
#include <asm/byteorder.h>
42 
 
43 
#include <net/irda/wrapper.h>
44 
#include <net/irda/irda.h>
45 
#include <net/irda/irda_device.h>
46 
 
47 
#include "ali-ircc.h"
48 
 
49 
#define CHIP_IO_EXTENT 8
50 
#define BROKEN_DONGLE_ID
51 
 
52 
#define ALI_IRCC_DRIVER_NAME "ali-ircc"
53 
 
54 
/* Power Management */
55 
static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state);
56 
static int ali_ircc_resume(struct platform_device *dev);
57 
 
58 
static struct platform_driver ali_ircc_driver = {
59 
        .suspend        = ali_ircc_suspend,
60 
        .resume         = ali_ircc_resume,
61 
        .driver         = {
62 
                .name   = ALI_IRCC_DRIVER_NAME,
63 
        },
64 
};
65 
 
66 
/* Module parameters */
67 
static int qos_mtt_bits = 0x07;  /* 1 ms or more */
68 
 
69 
/* Use BIOS settions by default, but user may supply module parameters */
70 
static unsigned int io[]  = { ~0, ~0, ~0, ~0 };
71 
static unsigned int irq[] = { 0, 0, 0, 0 };
72 
static unsigned int dma[] = { 0, 0, 0, 0 };
73 
 
74 
static int  ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info);
75 
static int  ali_ircc_init_43(ali_chip_t *chip, chipio_t *info);
76 
static int  ali_ircc_init_53(ali_chip_t *chip, chipio_t *info);
77 
 
78 
/* These are the currently known ALi sourth-bridge chipsets, the only one difference
79 
 * is that M1543C doesn't support HP HDSL-3600
80 
 */
81 
static ali_chip_t chips[] =
82 
{
83 
        { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 },
84 
        { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 },
85 
        { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 },
86 
        { NULL }
87 
};
88 
 
89 
/* Max 4 instances for now */
90 
static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
91 
 
92 
/* Dongle Types */
93 
static char *dongle_types[] = {
94 
        "TFDS6000",
95 
        "HP HSDL-3600",
96 
        "HP HSDL-1100",
97 
        "No dongle connected",
98 
};
99 
 
100 
/* Some prototypes */
101 
static int  ali_ircc_open(int i, chipio_t *info);
102 
 
103 
static int  ali_ircc_close(struct ali_ircc_cb *self);
104 
 
105 
static int  ali_ircc_setup(chipio_t *info);
106 
static int  ali_ircc_is_receiving(struct ali_ircc_cb *self);
107 
static int  ali_ircc_net_open(struct net_device *dev);
108 
static int  ali_ircc_net_close(struct net_device *dev);
109 
static int  ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
110 
static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud);
111 
static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev);
112 
 
113 
/* SIR function */
114 
static int  ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev);
115 
static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self);
116 
static void ali_ircc_sir_receive(struct ali_ircc_cb *self);
117 
static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self);
118 
static int  ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
119 
static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
120 
 
121 
/* FIR function */
122 
static int  ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev);
123 
static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
124 
static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self);
125 
static int  ali_ircc_dma_receive(struct ali_ircc_cb *self);
126 
static int  ali_ircc_dma_receive_complete(struct ali_ircc_cb *self);
127 
static int  ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self);
128 
static void ali_ircc_dma_xmit(struct ali_ircc_cb *self);
129 
 
130 
/* My Function */
131 
static int  ali_ircc_read_dongle_id (int i, chipio_t *info);
132 
static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed);
133 
 
134 
/* ALi chip function */
135 
static void SIR2FIR(int iobase);
136 
static void FIR2SIR(int iobase);
137 
static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable);
138 
 
139 
/*
140 
 * Function ali_ircc_init ()
141 
 *
142 
 *    Initialize chip. Find out whay kinds of chips we are dealing with
143 
 *    and their configuation registers address
144 
 */
145 
static int __init ali_ircc_init(void)
146 
{
147 
        ali_chip_t *chip;
148 
        chipio_t info;
149 
        int ret;
150 
        int cfg, cfg_base;
151 
        int reg, revision;
152 
        int i = 0;
153 
 
154 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
155 
 
156 
        ret = platform_driver_register(&ali_ircc_driver);
157 
        if (ret) {
158 
                IRDA_ERROR("%s, Can't register driver!\n",
159 
                           ALI_IRCC_DRIVER_NAME);
160 
                return ret;
161 
        }
162 
 
163 
        ret = -ENODEV;
164 
 
165 
        /* Probe for all the ALi chipsets we know about */
166 
        for (chip= chips; chip->name; chip++, i++)
167 
        {
168 
                IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __FUNCTION__, chip->name);
169 
 
170 
                /* Try all config registers for this chip */
171 
                for (cfg=0; cfg<2; cfg++)
172 
                {
173 
                        cfg_base = chip->cfg[cfg];
174 
                        if (!cfg_base)
175 
                                continue;
176 
 
177 
                        memset(&info, 0, sizeof(chipio_t));
178 
                        info.cfg_base = cfg_base;
179 
                        info.fir_base = io[i];
180 
                        info.dma = dma[i];
181 
                        info.irq = irq[i];
182 
 
183 
 
184 
                        /* Enter Configuration */
185 
                        outb(chip->entr1, cfg_base);
186 
                        outb(chip->entr2, cfg_base);
187 
 
188 
                        /* Select Logical Device 5 Registers (UART2) */
189 
                        outb(0x07, cfg_base);
190 
                        outb(0x05, cfg_base+1);
191 
 
192 
                        /* Read Chip Identification Register */
193 
                        outb(chip->cid_index, cfg_base);
194 
                        reg = inb(cfg_base+1);
195 
 
196 
                        if (reg == chip->cid_value)
197 
                        {
198 
                                IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __FUNCTION__, cfg_base);
199 
 
200 
                                outb(0x1F, cfg_base);
201 
                                revision = inb(cfg_base+1);
202 
                                IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __FUNCTION__,
203 
                                           chip->name, revision);
204 
 
205 
                                /*
206 
                                 * If the user supplies the base address, then
207 
                                 * we init the chip, if not we probe the values
208 
                                 * set by the BIOS
209 
                                 */
210 
                                if (io[i] < 2000)
211 
                                {
212 
                                        chip->init(chip, &info);
213 
                                }
214 
                                else
215 
                                {
216 
                                        chip->probe(chip, &info);
217 
                                }
218 
 
219 
                                if (ali_ircc_open(i, &info) == 0)
220 
                                        ret = 0;
221 
                                i++;
222 
                        }
223 
                        else
224 
                        {
225 
                                IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __FUNCTION__, chip->name, cfg_base);
226 
                        }
227 
                        /* Exit configuration */
228 
                        outb(0xbb, cfg_base);
229 
                }
230 
        }
231 
 
232 
        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
233 
 
234 
        if (ret)
235 
                platform_driver_unregister(&ali_ircc_driver);
236 
 
237 
        return ret;
238 
}
239 
 
240 
/*
241 
 * Function ali_ircc_cleanup ()
242 
 *
243 
 *    Close all configured chips
244 
 *
245 
 */
246 
static void __exit ali_ircc_cleanup(void)
247 
{
248 
        int i;
249 
 
250 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
251 
 
252 
        for (i=0; i < ARRAY_SIZE(dev_self); i++) {
253 
                if (dev_self[i])
254 
                        ali_ircc_close(dev_self[i]);
255 
        }
256 
 
257 
        platform_driver_unregister(&ali_ircc_driver);
258 
 
259 
        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
260 
}
261 
 
262 
/*
263 
 * Function ali_ircc_open (int i, chipio_t *inf)
264 
 *
265 
 *    Open driver instance
266 
 *
267 
 */
268 
static int ali_ircc_open(int i, chipio_t *info)
269 
{
270 
        struct net_device *dev;
271 
        struct ali_ircc_cb *self;
272 
        int dongle_id;
273 
        int err;
274 
 
275 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
276 
 
277 
        if (i >= ARRAY_SIZE(dev_self)) {
278 
                IRDA_ERROR("%s(), maximum number of supported chips reached!\n",
279 
                           __FUNCTION__);
280 
                return -ENOMEM;
281 
        }
282 
 
283 
        /* Set FIR FIFO and DMA Threshold */
284 
        if ((ali_ircc_setup(info)) == -1)
285 
                return -1;
286 
 
287 
        dev = alloc_irdadev(sizeof(*self));
288 
        if (dev == NULL) {
289 
                IRDA_ERROR("%s(), can't allocate memory for control block!\n",
290 
                           __FUNCTION__);
291 
                return -ENOMEM;
292 
        }
293 
 
294 
        self = dev->priv;
295 
        self->netdev = dev;
296 
        spin_lock_init(&self->lock);
297 
 
298 
        /* Need to store self somewhere */
299 
        dev_self[i] = self;
300 
        self->index = i;
301 
 
302 
        /* Initialize IO */
303 
        self->io.cfg_base  = info->cfg_base;    /* In ali_ircc_probe_53 assign          */
304 
        self->io.fir_base  = info->fir_base;    /* info->sir_base = info->fir_base      */
305 
        self->io.sir_base  = info->sir_base;    /* ALi SIR and FIR use the same address */
306 
        self->io.irq       = info->irq;
307 
        self->io.fir_ext   = CHIP_IO_EXTENT;
308 
        self->io.dma       = info->dma;
309 
        self->io.fifo_size = 16;                /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */
310 
 
311 
        /* Reserve the ioports that we need */
312 
        if (!request_region(self->io.fir_base, self->io.fir_ext,
313 
                            ALI_IRCC_DRIVER_NAME)) {
314 
                IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __FUNCTION__,
315 
                        self->io.fir_base);
316 
                err = -ENODEV;
317 
                goto err_out1;
318 
        }
319 
 
320 
        /* Initialize QoS for this device */
321 
        irda_init_max_qos_capabilies(&self->qos);
322 
 
323 
        /* The only value we must override it the baudrate */
324 
        self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
325 
                IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM
326 
 
327 
        self->qos.min_turn_time.bits = qos_mtt_bits;
328 
 
329 
        irda_qos_bits_to_value(&self->qos);
330 
 
331 
        /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
332 
        self->rx_buff.truesize = 14384;
333 
        self->tx_buff.truesize = 14384;
334 
 
335 
        /* Allocate memory if needed */
336 
        self->rx_buff.head =
337 
                dma_alloc_coherent(NULL, self->rx_buff.truesize,
338 
                                   &self->rx_buff_dma, GFP_KERNEL);
339 
        if (self->rx_buff.head == NULL) {
340 
                err = -ENOMEM;
341 
                goto err_out2;
342 
        }
343 
        memset(self->rx_buff.head, 0, self->rx_buff.truesize);
344 
 
345 
        self->tx_buff.head =
346 
                dma_alloc_coherent(NULL, self->tx_buff.truesize,
347 
                                   &self->tx_buff_dma, GFP_KERNEL);
348 
        if (self->tx_buff.head == NULL) {
349 
                err = -ENOMEM;
350 
                goto err_out3;
351 
        }
352 
        memset(self->tx_buff.head, 0, self->tx_buff.truesize);
353 
 
354 
        self->rx_buff.in_frame = FALSE;
355 
        self->rx_buff.state = OUTSIDE_FRAME;
356 
        self->tx_buff.data = self->tx_buff.head;
357 
        self->rx_buff.data = self->rx_buff.head;
358 
 
359 
        /* Reset Tx queue info */
360 
        self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
361 
        self->tx_fifo.tail = self->tx_buff.head;
362 
 
363 
        /* Override the network functions we need to use */
364 
        dev->hard_start_xmit = ali_ircc_sir_hard_xmit;
365 
        dev->open            = ali_ircc_net_open;
366 
        dev->stop            = ali_ircc_net_close;
367 
        dev->do_ioctl        = ali_ircc_net_ioctl;
368 
        dev->get_stats       = ali_ircc_net_get_stats;
369 
 
370 
        err = register_netdev(dev);
371 
        if (err) {
372 
                IRDA_ERROR("%s(), register_netdev() failed!\n", __FUNCTION__);
373 
                goto err_out4;
374 
        }
375 
        IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
376 
 
377 
        /* Check dongle id */
378 
        dongle_id = ali_ircc_read_dongle_id(i, info);
379 
        IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __FUNCTION__,
380 
                     ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]);
381 
 
382 
        self->io.dongle_id = dongle_id;
383 
 
384 
        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
385 
 
386 
        return 0;
387 
 
388 
 err_out4:
389 
        dma_free_coherent(NULL, self->tx_buff.truesize,
390 
                          self->tx_buff.head, self->tx_buff_dma);
391 
 err_out3:
392 
        dma_free_coherent(NULL, self->rx_buff.truesize,
393 
                          self->rx_buff.head, self->rx_buff_dma);
394 
 err_out2:
395 
        release_region(self->io.fir_base, self->io.fir_ext);
396 
 err_out1:
397 
        dev_self[i] = NULL;
398 
        free_netdev(dev);
399 
        return err;
400 
}
401 
 
402 
 
403 
/*
404 
 * Function ali_ircc_close (self)
405 
 *
406 
 *    Close driver instance
407 
 *
408 
 */
409 
static int __exit ali_ircc_close(struct ali_ircc_cb *self)
410 
{
411 
        int iobase;
412 
 
413 
        IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
414 
 
415 
        IRDA_ASSERT(self != NULL, return -1;);
416 
 
417 
        iobase = self->io.fir_base;
418 
 
419 
        /* Remove netdevice */
420 
        unregister_netdev(self->netdev);
421 
 
422 
        /* Release the PORT that this driver is using */
423 
        IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __FUNCTION__, self->io.fir_base);
424 
        release_region(self->io.fir_base, self->io.fir_ext);
425 
 
426 
        if (self->tx_buff.head)
427 
                dma_free_coherent(NULL, self->tx_buff.truesize,
428 
                                  self->tx_buff.head, self->tx_buff_dma);
429 
 
430 
        if (self->rx_buff.head)
431 
                dma_free_coherent(NULL, self->rx_buff.truesize,
432 
                                  self->rx_buff.head, self->rx_buff_dma);
433 
 
434 
        dev_self[self->index] = NULL;
435 
        free_netdev(self->netdev);
436 
 
437 
        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
438 
 
439 
        return 0;
440 
}
441 
 
442 
/*
443 
 * Function ali_ircc_init_43 (chip, info)
444 
 *
445 
 *    Initialize the ALi M1543 chip.
446 
 */
447 
static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info)
448 
{
449 
        /* All controller information like I/O address, DMA channel, IRQ
450 
         * are set by BIOS
451 
         */
452 
 
453 
        return 0;
454 
}
455 
 
456 
/*
457 
 * Function ali_ircc_init_53 (chip, info)
458 
 *
459 
 *    Initialize the ALi M1535 chip.
460 
 */
461 
static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info)
462 
{
463 
        /* All controller information like I/O address, DMA channel, IRQ
464 
         * are set by BIOS
465 
         */
466 
 
467 
        return 0;
468 
}
469 
 
470 
/*
471 
 * Function ali_ircc_probe_53 (chip, info)
472 
 *
473 
 *      Probes for the ALi M1535D or M1535
474 
 */
475 
static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info)
476 
{
477 
        int cfg_base = info->cfg_base;
478 
        int hi, low, reg;
479 
 
480 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
481 
 
482 
        /* Enter Configuration */
483 
        outb(chip->entr1, cfg_base);
484 
        outb(chip->entr2, cfg_base);
485 
 
486 
        /* Select Logical Device 5 Registers (UART2) */
487 
        outb(0x07, cfg_base);
488 
        outb(0x05, cfg_base+1);
489 
 
490 
        /* Read address control register */
491 
        outb(0x60, cfg_base);
492 
        hi = inb(cfg_base+1);
493 
        outb(0x61, cfg_base);
494 
        low = inb(cfg_base+1);
495 
        info->fir_base = (hi<<8) + low;
496 
 
497 
        info->sir_base = info->fir_base;
498 
 
499 
        IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __FUNCTION__, info->fir_base);
500 
 
501 
        /* Read IRQ control register */
502 
        outb(0x70, cfg_base);
503 
        reg = inb(cfg_base+1);
504 
        info->irq = reg & 0x0f;
505 
        IRDA_DEBUG(2, "%s(), probing irq=%d\n", __FUNCTION__, info->irq);
506 
 
507 
        /* Read DMA channel */
508 
        outb(0x74, cfg_base);
509 
        reg = inb(cfg_base+1);
510 
        info->dma = reg & 0x07;
511 
 
512 
        if(info->dma == 0x04)
513 
                IRDA_WARNING("%s(), No DMA channel assigned !\n", __FUNCTION__);
514 
        else
515 
                IRDA_DEBUG(2, "%s(), probing dma=%d\n", __FUNCTION__, info->dma);
516 
 
517 
        /* Read Enabled Status */
518 
        outb(0x30, cfg_base);
519 
        reg = inb(cfg_base+1);
520 
        info->enabled = (reg & 0x80) && (reg & 0x01);
521 
        IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __FUNCTION__, info->enabled);
522 
 
523 
        /* Read Power Status */
524 
        outb(0x22, cfg_base);
525 
        reg = inb(cfg_base+1);
526 
        info->suspended = (reg & 0x20);
527 
        IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __FUNCTION__, info->suspended);
528 
 
529 
        /* Exit configuration */
530 
        outb(0xbb, cfg_base);
531 
 
532 
        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
533 
 
534 
        return 0;
535 
}
536 
 
537 
/*
538 
 * Function ali_ircc_setup (info)
539 
 *
540 
 *      Set FIR FIFO and DMA Threshold
541 
 *      Returns non-negative on success.
542 
 *
543 
 */
544 
static int ali_ircc_setup(chipio_t *info)
545 
{
546 
        unsigned char tmp;
547 
        int version;
548 
        int iobase = info->fir_base;
549 
 
550 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
551 
 
552 
        /* Locking comments :
553 
         * Most operations here need to be protected. We are called before
554 
         * the device instance is created in ali_ircc_open(), therefore
555 
         * nobody can bother us - Jean II */
556 
 
557 
        /* Switch to FIR space */
558 
        SIR2FIR(iobase);
559 
 
560 
        /* Master Reset */
561 
        outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM
562 
 
563 
        /* Read FIR ID Version Register */
564 
        switch_bank(iobase, BANK3);
565 
        version = inb(iobase+FIR_ID_VR);
566 
 
567 
        /* Should be 0x00 in the M1535/M1535D */
568 
        if(version != 0x00)
569 
        {
570 
                IRDA_ERROR("%s, Wrong chip version %02x\n",
571 
                           ALI_IRCC_DRIVER_NAME, version);
572 
                return -1;
573 
        }
574 
 
575 
        /* Set FIR FIFO Threshold Register */
576 
        switch_bank(iobase, BANK1);
577 
        outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
578 
 
579 
        /* Set FIR DMA Threshold Register */
580 
        outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
581 
 
582 
        /* CRC enable */
583 
        switch_bank(iobase, BANK2);
584 
        outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR);
585 
 
586 
        /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/
587 
 
588 
        /* Switch to Bank 0 */
589 
        switch_bank(iobase, BANK0);
590 
 
591 
        tmp = inb(iobase+FIR_LCR_B);
592 
        tmp &=~0x20; // disable SIP
593 
        tmp |= 0x80; // these two steps make RX mode
594 
        tmp &= 0xbf;
595 
        outb(tmp, iobase+FIR_LCR_B);
596 
 
597 
        /* Disable Interrupt */
598 
        outb(0x00, iobase+FIR_IER);
599 
 
600 
 
601 
        /* Switch to SIR space */
602 
        FIR2SIR(iobase);
603 
 
604 
        IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n",
605 
                     ALI_IRCC_DRIVER_NAME);
606 
 
607 
        /* Enable receive interrupts */
608 
        // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM
609 
        // Turn on the interrupts in ali_ircc_net_open
610 
 
611 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
612 
 
613 
        return 0;
614 
}
615 
 
616 
/*
617 
 * Function ali_ircc_read_dongle_id (int index, info)
618 
 *
619 
 * Try to read dongle indentification. This procedure needs to be executed
620 
 * once after power-on/reset. It also needs to be used whenever you suspect
621 
 * that the user may have plugged/unplugged the IrDA Dongle.
622 
 */
623 
static int ali_ircc_read_dongle_id (int i, chipio_t *info)
624 
{
625 
        int dongle_id, reg;
626 
        int cfg_base = info->cfg_base;
627 
 
628 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
629 
 
630 
        /* Enter Configuration */
631 
        outb(chips[i].entr1, cfg_base);
632 
        outb(chips[i].entr2, cfg_base);
633 
 
634 
        /* Select Logical Device 5 Registers (UART2) */
635 
        outb(0x07, cfg_base);
636 
        outb(0x05, cfg_base+1);
637 
 
638 
        /* Read Dongle ID */
639 
        outb(0xf0, cfg_base);
640 
        reg = inb(cfg_base+1);
641 
        dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01);
642 
        IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __FUNCTION__,
643 
                dongle_id, dongle_types[dongle_id]);
644 
 
645 
        /* Exit configuration */
646 
        outb(0xbb, cfg_base);
647 
 
648 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
649 
 
650 
        return dongle_id;
651 
}
652 
 
653 
/*
654 
 * Function ali_ircc_interrupt (irq, dev_id, regs)
655 
 *
656 
 *    An interrupt from the chip has arrived. Time to do some work
657 
 *
658 
 */
659 
static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
660 
{
661 
        struct net_device *dev = dev_id;
662 
        struct ali_ircc_cb *self;
663 
        int ret;
664 
 
665 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
666 
 
667 
        self = dev->priv;
668 
 
669 
        spin_lock(&self->lock);
670 
 
671 
        /* Dispatch interrupt handler for the current speed */
672 
        if (self->io.speed > 115200)
673 
                ret = ali_ircc_fir_interrupt(self);
674 
        else
675 
                ret = ali_ircc_sir_interrupt(self);
676 
 
677 
        spin_unlock(&self->lock);
678 
 
679 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
680 
        return ret;
681 
}
682 
/*
683 
 * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self)
684 
 *
685 
 *    Handle MIR/FIR interrupt
686 
 *
687 
 */
688 
static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self)
689 
{
690 
        __u8 eir, OldMessageCount;
691 
        int iobase, tmp;
692 
 
693 
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
694 
 
695 
        iobase = self->io.fir_base;
696 
 
697 
        switch_bank(iobase, BANK0);
698 
        self->InterruptID = inb(iobase+FIR_IIR);
699 
        self->BusStatus = inb(iobase+FIR_BSR);
700 
 
701 
        OldMessageCount = (self->LineStatus + 1) & 0x07;
702 
        self->LineStatus = inb(iobase+FIR_LSR);
703 
        //self->ier = inb(iobase+FIR_IER);              2000/12/1 04:32PM
704 
        eir = self->InterruptID & self->ier; /* Mask out the interesting ones */
705 
 
706 
        IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __FUNCTION__,self->InterruptID);
707 
        IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __FUNCTION__,self->LineStatus);
708 
        IRDA_DEBUG(1, "%s(), self->ier = %x\n", __FUNCTION__,self->ier);
709 
        IRDA_DEBUG(1, "%s(), eir = %x\n", __FUNCTION__,eir);
710 
 
711 
        /* Disable interrupts */
712 
         SetCOMInterrupts(self, FALSE);
713 
 
714 
        /* Tx or Rx Interrupt */
715 
 
716 
        if (eir & IIR_EOM)
717 
        {
718 
                if (self->io.direction == IO_XMIT) /* TX */
719 
                {
720 
                        IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __FUNCTION__);
721 
 
722 
                        if(ali_ircc_dma_xmit_complete(self))
723 
                        {
724 
                                if (irda_device_txqueue_empty(self->netdev))
725 
                                {
726 
                                        /* Prepare for receive */
727 
                                        ali_ircc_dma_receive(self);
728 
                                        self->ier = IER_EOM;
729 
                                }
730 
                        }
731 
                        else
732 
                        {
733 
                                self->ier = IER_EOM;
734 
                        }
735 
 
736 
                }
737 
                else /* RX */
738 
                {
739 
                        IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __FUNCTION__);
740 
 
741 
                        if(OldMessageCount > ((self->LineStatus+1) & 0x07))
742 
                        {
743 
                                self->rcvFramesOverflow = TRUE;
744 
                                IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******** \n", __FUNCTION__);
745 
                        }
746 
 
747 
                        if (ali_ircc_dma_receive_complete(self))
748 
                        {
749 
                                IRDA_DEBUG(1, "%s(), ******* receive complete ******** \n", __FUNCTION__);
750 
 
751 
                                self->ier = IER_EOM;
752 
                        }
753 
                        else
754 
                        {
755 
                                IRDA_DEBUG(1, "%s(), ******* Not receive complete ******** \n", __FUNCTION__);
756 
 
757 
                                self->ier = IER_EOM | IER_TIMER;
758 
                        }
759 
 
760 
                }
761 
        }
762 
        /* Timer Interrupt */
763 
        else if (eir & IIR_TIMER)
764 
        {
765 
                if(OldMessageCount > ((self->LineStatus+1) & 0x07))
766 
                {
767 
                        self->rcvFramesOverflow = TRUE;
768 
                        IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******* \n", __FUNCTION__);
769 
                }
770 
                /* Disable Timer */
771 
                switch_bank(iobase, BANK1);
772 
                tmp = inb(iobase+FIR_CR);
773 
                outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR);
774 
 
775 
                /* Check if this is a Tx timer interrupt */
776 
                if (self->io.direction == IO_XMIT)
777 
                {
778 
                        ali_ircc_dma_xmit(self);
779 
 
780 
                        /* Interrupt on EOM */
781 
                        self->ier = IER_EOM;
782 
 
783 
                }
784 
                else /* Rx */
785 
                {
786 
                        if(ali_ircc_dma_receive_complete(self))
787 
                        {
788 
                                self->ier = IER_EOM;
789 
                        }
790 
                        else
791 
                        {
792 
                                self->ier = IER_EOM | IER_TIMER;
793 
                        }
794 
                }
795 
        }
796 
 
797 
        /* Restore Interrupt */
798 
        SetCOMInterrupts(self, TRUE);
799 
 
800 
        IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __FUNCTION__);
801 
        return IRQ_RETVAL(eir);
802 
}
803 
 
804 
/*
805 
 * Function ali_ircc_sir_interrupt (irq, self, eir)
806 
 *
807 
 *    Handle SIR interrupt
808 
 *
809 
 */
810 
static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self)
811 
{
812 
        int iobase;
813 
        int iir, lsr;
814 
 
815 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
816 
 
817 
        iobase = self->io.sir_base;
818 
 
819 
        iir = inb(iobase+UART_IIR) & UART_IIR_ID;
820 
        if (iir) {
821 
                /* Clear interrupt */
822 
                lsr = inb(iobase+UART_LSR);
823 
 
824 
                IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __FUNCTION__,
825 
                           iir, lsr, iobase);
826 
 
827 
                switch (iir)
828 
                {
829 
                        case UART_IIR_RLSI:
830 
                                IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__);
831 
                                break;
832 
                        case UART_IIR_RDI:
833 
                                /* Receive interrupt */
834 
                                ali_ircc_sir_receive(self);
835 
                                break;
836 
                        case UART_IIR_THRI:
837 
                                if (lsr & UART_LSR_THRE)
838 
                                {
839 
                                        /* Transmitter ready for data */
840 
                                        ali_ircc_sir_write_wakeup(self);
841 
                                }
842 
                                break;
843 
                        default:
844 
                                IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __FUNCTION__, iir);
845 
                                break;
846 
                }
847 
 
848 
        }
849 
 
850 
 
851 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
852 
 
853 
        return IRQ_RETVAL(iir);
854 
}
855 
 
856 
 
857 
/*
858 
 * Function ali_ircc_sir_receive (self)
859 
 *
860 
 *    Receive one frame from the infrared port
861 
 *
862 
 */
863 
static void ali_ircc_sir_receive(struct ali_ircc_cb *self)
864 
{
865 
        int boguscount = 0;
866 
        int iobase;
867 
 
868 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
869 
        IRDA_ASSERT(self != NULL, return;);
870 
 
871 
        iobase = self->io.sir_base;
872 
 
873 
        /*
874 
         * Receive all characters in Rx FIFO, unwrap and unstuff them.
875 
         * async_unwrap_char will deliver all found frames
876 
         */
877 
        do {
878 
                async_unwrap_char(self->netdev, &self->stats, &self->rx_buff,
879 
                                  inb(iobase+UART_RX));
880 
 
881 
                /* Make sure we don't stay here too long */
882 
                if (boguscount++ > 32) {
883 
                        IRDA_DEBUG(2,"%s(), breaking!\n", __FUNCTION__);
884 
                        break;
885 
                }
886 
        } while (inb(iobase+UART_LSR) & UART_LSR_DR);
887 
 
888 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
889 
}
890 
 
891 
/*
892 
 * Function ali_ircc_sir_write_wakeup (tty)
893 
 *
894 
 *    Called by the driver when there's room for more data.  If we have
895 
 *    more packets to send, we send them here.
896 
 *
897 
 */
898 
static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self)
899 
{
900 
        int actual = 0;
901 
        int iobase;
902 
 
903 
        IRDA_ASSERT(self != NULL, return;);
904 
 
905 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
906 
 
907 
        iobase = self->io.sir_base;
908 
 
909 
        /* Finished with frame?  */
910 
        if (self->tx_buff.len > 0)
911 
        {
912 
                /* Write data left in transmit buffer */
913 
                actual = ali_ircc_sir_write(iobase, self->io.fifo_size,
914 
                                      self->tx_buff.data, self->tx_buff.len);
915 
                self->tx_buff.data += actual;
916 
                self->tx_buff.len  -= actual;
917 
        }
918 
        else
919 
        {
920 
                if (self->new_speed)
921 
                {
922 
                        /* We must wait until all data are gone */
923 
                        while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT))
924 
                                IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __FUNCTION__ );
925 
 
926 
                        IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __FUNCTION__ , self->new_speed);
927 
                        ali_ircc_change_speed(self, self->new_speed);
928 
                        self->new_speed = 0;
929 
 
930 
                        // benjamin 2000/11/10 06:32PM
931 
                        if (self->io.speed > 115200)
932 
                        {
933 
                                IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT \n", __FUNCTION__ );
934 
 
935 
                                self->ier = IER_EOM;
936 
                                // SetCOMInterrupts(self, TRUE);
937 
                                return;
938 
                        }
939 
                }
940 
                else
941 
                {
942 
                        netif_wake_queue(self->netdev);
943 
                }
944 
 
945 
                self->stats.tx_packets++;
946 
 
947 
                /* Turn on receive interrupts */
948 
                outb(UART_IER_RDI, iobase+UART_IER);
949 
        }
950 
 
951 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
952 
}
953 
 
954 
static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud)
955 
{
956 
        struct net_device *dev = self->netdev;
957 
        int iobase;
958 
 
959 
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
960 
 
961 
        IRDA_DEBUG(2, "%s(), setting speed = %d \n", __FUNCTION__ , baud);
962 
 
963 
        /* This function *must* be called with irq off and spin-lock.
964 
         * - Jean II */
965 
 
966 
        iobase = self->io.fir_base;
967 
 
968 
        SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM
969 
 
970 
        /* Go to MIR, FIR Speed */
971 
        if (baud > 115200)
972 
        {
973 
 
974 
 
975 
                ali_ircc_fir_change_speed(self, baud);
976 
 
977 
                /* Install FIR xmit handler*/
978 
                dev->hard_start_xmit = ali_ircc_fir_hard_xmit;
979 
 
980 
                /* Enable Interuupt */
981 
                self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM
982 
 
983 
                /* Be ready for incomming frames */
984 
                ali_ircc_dma_receive(self);     // benajmin 2000/11/8 07:46PM not complete
985 
        }
986 
        /* Go to SIR Speed */
987 
        else
988 
        {
989 
                ali_ircc_sir_change_speed(self, baud);
990 
 
991 
                /* Install SIR xmit handler*/
992 
                dev->hard_start_xmit = ali_ircc_sir_hard_xmit;
993 
        }
994 
 
995 
 
996 
        SetCOMInterrupts(self, TRUE);   // 2000/11/24 11:43AM
997 
 
998 
        netif_wake_queue(self->netdev);
999 
 
1000 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1001 
}
1002 
 
1003 
static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud)
1004 
{
1005 
 
1006 
        int iobase;
1007 
        struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1008 
        struct net_device *dev;
1009 
 
1010 
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1011 
 
1012 
        IRDA_ASSERT(self != NULL, return;);
1013 
 
1014 
        dev = self->netdev;
1015 
        iobase = self->io.fir_base;
1016 
 
1017 
        IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __FUNCTION__ ,self->io.speed,baud);
1018 
 
1019 
        /* Come from SIR speed */
1020 
        if(self->io.speed <=115200)
1021 
        {
1022 
                SIR2FIR(iobase);
1023 
        }
1024 
 
1025 
        /* Update accounting for new speed */
1026 
        self->io.speed = baud;
1027 
 
1028 
        // Set Dongle Speed mode
1029 
        ali_ircc_change_dongle_speed(self, baud);
1030 
 
1031 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1032 
}
1033 
 
1034 
/*
1035 
 * Function ali_sir_change_speed (self, speed)
1036 
 *
1037 
 *    Set speed of IrDA port to specified baudrate
1038 
 *
1039 
 */
1040 
static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed)
1041 
{
1042 
        struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1043 
        unsigned long flags;
1044 
        int iobase;
1045 
        int fcr;    /* FIFO control reg */
1046 
        int lcr;    /* Line control reg */
1047 
        int divisor;
1048 
 
1049 
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1050 
 
1051 
        IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __FUNCTION__ , speed);
1052 
 
1053 
        IRDA_ASSERT(self != NULL, return;);
1054 
 
1055 
        iobase = self->io.sir_base;
1056 
 
1057 
        /* Come from MIR or FIR speed */
1058 
        if(self->io.speed >115200)
1059 
        {
1060 
                // Set Dongle Speed mode first
1061 
                ali_ircc_change_dongle_speed(self, speed);
1062 
 
1063 
                FIR2SIR(iobase);
1064 
        }
1065 
 
1066 
        // Clear Line and Auxiluary status registers 2000/11/24 11:47AM
1067 
 
1068 
        inb(iobase+UART_LSR);
1069 
        inb(iobase+UART_SCR);
1070 
 
1071 
        /* Update accounting for new speed */
1072 
        self->io.speed = speed;
1073 
 
1074 
        spin_lock_irqsave(&self->lock, flags);
1075 
 
1076 
        divisor = 115200/speed;
1077 
 
1078 
        fcr = UART_FCR_ENABLE_FIFO;
1079 
 
1080 
        /*
1081 
         * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1082 
         * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
1083 
         * about this timeout since it will always be fast enough.
1084 
         */
1085 
        if (self->io.speed < 38400)
1086 
                fcr |= UART_FCR_TRIGGER_1;
1087 
        else
1088 
                fcr |= UART_FCR_TRIGGER_14;
1089 
 
1090 
        /* IrDA ports use 8N1 */
1091 
        lcr = UART_LCR_WLEN8;
1092 
 
1093 
        outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */
1094 
        outb(divisor & 0xff,      iobase+UART_DLL); /* Set speed */
1095 
        outb(divisor >> 8,        iobase+UART_DLM);
1096 
        outb(lcr,                 iobase+UART_LCR); /* Set 8N1  */
1097 
        outb(fcr,                 iobase+UART_FCR); /* Enable FIFO's */
1098 
 
1099 
        /* without this, the conection will be broken after come back from FIR speed,
1100 
           but with this, the SIR connection is harder to established */
1101 
        outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR);
1102 
 
1103 
        spin_unlock_irqrestore(&self->lock, flags);
1104 
 
1105 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1106 
}
1107 
 
1108 
static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed)
1109 
{
1110 
 
1111 
        struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1112 
        int iobase,dongle_id;
1113 
        int tmp = 0;
1114 
 
1115 
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1116 
 
1117 
        iobase = self->io.fir_base;     /* or iobase = self->io.sir_base; */
1118 
        dongle_id = self->io.dongle_id;
1119 
 
1120 
        /* We are already locked, no need to do it again */
1121 
 
1122 
        IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __FUNCTION__ , dongle_types[dongle_id], speed);
1123 
 
1124 
        switch_bank(iobase, BANK2);
1125 
        tmp = inb(iobase+FIR_IRDA_CR);
1126 
 
1127 
        /* IBM type dongle */
1128 
        if(dongle_id == 0)
1129 
        {
1130 
                if(speed == 4000000)
1131 
                {
1132 
                        //            __ __
1133 
                        // SD/MODE __|     |__ __
1134 
                        //               __ __
1135 
                        // IRTX    __ __|     |__
1136 
                        //         T1 T2 T3 T4 T5
1137 
 
1138 
                        tmp &=  ~IRDA_CR_HDLC;          // HDLC=0
1139 
                        tmp |= IRDA_CR_CRC;             // CRC=1
1140 
 
1141 
                        switch_bank(iobase, BANK2);
1142 
                        outb(tmp, iobase+FIR_IRDA_CR);
1143 
 
1144 
                        // T1 -> SD/MODE:0 IRTX:0
1145 
                        tmp &= ~0x09;
1146 
                        tmp |= 0x02;
1147 
                        outb(tmp, iobase+FIR_IRDA_CR);
1148 
                        udelay(2);
1149 
 
1150 
                        // T2 -> SD/MODE:1 IRTX:0
1151 
                        tmp &= ~0x01;
1152 
                        tmp |= 0x0a;
1153 
                        outb(tmp, iobase+FIR_IRDA_CR);
1154 
                        udelay(2);
1155 
 
1156 
                        // T3 -> SD/MODE:1 IRTX:1
1157 
                        tmp |= 0x0b;
1158 
                        outb(tmp, iobase+FIR_IRDA_CR);
1159 
                        udelay(2);
1160 
 
1161 
                        // T4 -> SD/MODE:0 IRTX:1
1162 
                        tmp &= ~0x08;
1163 
                        tmp |= 0x03;
1164 
                        outb(tmp, iobase+FIR_IRDA_CR);
1165 
                        udelay(2);
1166 
 
1167 
                        // T5 -> SD/MODE:0 IRTX:0
1168 
                        tmp &= ~0x09;
1169 
                        tmp |= 0x02;
1170 
                        outb(tmp, iobase+FIR_IRDA_CR);
1171 
                        udelay(2);
1172 
 
1173 
                        // reset -> Normal TX output Signal
1174 
                        outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1175 
                }
1176 
                else /* speed <=1152000 */
1177 
                {
1178 
                        //            __
1179 
                        // SD/MODE __|  |__
1180 
                        //
1181 
                        // IRTX    ________
1182 
                        //         T1 T2 T3
1183 
 
1184 
                        /* MIR 115200, 57600 */
1185 
                        if (speed==1152000)
1186 
                        {
1187 
                                tmp |= 0xA0;       //HDLC=1, 1.152Mbps=1
1188 
                        }
1189 
                        else
1190 
                        {
1191 
                                tmp &=~0x80;       //HDLC 0.576Mbps
1192 
                                tmp |= 0x20;       //HDLC=1,
1193 
                        }
1194 
 
1195 
                        tmp |= IRDA_CR_CRC;             // CRC=1
1196 
 
1197 
                        switch_bank(iobase, BANK2);
1198 
                        outb(tmp, iobase+FIR_IRDA_CR);
1199 
 
1200 
                        /* MIR 115200, 57600 */
1201 
 
1202 
                        //switch_bank(iobase, BANK2);
1203 
                        // T1 -> SD/MODE:0 IRTX:0
1204 
                        tmp &= ~0x09;
1205 
                        tmp |= 0x02;
1206 
                        outb(tmp, iobase+FIR_IRDA_CR);
1207 
                        udelay(2);
1208 
 
1209 
                        // T2 -> SD/MODE:1 IRTX:0
1210 
                        tmp &= ~0x01;
1211 
                        tmp |= 0x0a;
1212 
                        outb(tmp, iobase+FIR_IRDA_CR);
1213 
 
1214 
                        // T3 -> SD/MODE:0 IRTX:0
1215 
                        tmp &= ~0x09;
1216 
                        tmp |= 0x02;
1217 
                        outb(tmp, iobase+FIR_IRDA_CR);
1218 
                        udelay(2);
1219 
 
1220 
                        // reset -> Normal TX output Signal
1221 
                        outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1222 
                }
1223 
        }
1224 
        else if (dongle_id == 1) /* HP HDSL-3600 */
1225 
        {
1226 
                switch(speed)
1227 
                {
1228 
                case 4000000:
1229 
                        tmp &=  ~IRDA_CR_HDLC;  // HDLC=0
1230 
                        break;
1231 
 
1232 
                case 1152000:
1233 
                        tmp |= 0xA0;            // HDLC=1, 1.152Mbps=1
1234 
                        break;
1235 
 
1236 
                case 576000:
1237 
                        tmp &=~0x80;            // HDLC 0.576Mbps
1238 
                        tmp |= 0x20;            // HDLC=1,
1239 
                        break;
1240 
                }
1241 
 
1242 
                tmp |= IRDA_CR_CRC;             // CRC=1
1243 
 
1244 
                switch_bank(iobase, BANK2);
1245 
                outb(tmp, iobase+FIR_IRDA_CR);
1246 
        }
1247 
        else /* HP HDSL-1100 */
1248 
        {
1249 
                if(speed <= 115200) /* SIR */
1250 
                {
1251 
 
1252 
                        tmp &= ~IRDA_CR_FIR_SIN;        // HP sin select = 0
1253 
 
1254 
                        switch_bank(iobase, BANK2);
1255 
                        outb(tmp, iobase+FIR_IRDA_CR);
1256 
                }
1257 
                else /* MIR FIR */
1258 
                {
1259 
 
1260 
                        switch(speed)
1261 
                        {
1262 
                        case 4000000:
1263 
                                tmp &=  ~IRDA_CR_HDLC;  // HDLC=0
1264 
                                break;
1265 
 
1266 
                        case 1152000:
1267 
                                tmp |= 0xA0;            // HDLC=1, 1.152Mbps=1
1268 
                                break;
1269 
 
1270 
                        case 576000:
1271 
                                tmp &=~0x80;            // HDLC 0.576Mbps
1272 
                                tmp |= 0x20;            // HDLC=1,
1273 
                                break;
1274 
                        }
1275 
 
1276 
                        tmp |= IRDA_CR_CRC;             // CRC=1
1277 
                        tmp |= IRDA_CR_FIR_SIN;         // HP sin select = 1
1278 
 
1279 
                        switch_bank(iobase, BANK2);
1280 
                        outb(tmp, iobase+FIR_IRDA_CR);
1281 
                }
1282 
        }
1283 
 
1284 
        switch_bank(iobase, BANK0);
1285 
 
1286 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1287 
}
1288 
 
1289 
/*
1290 
 * Function ali_ircc_sir_write (driver)
1291 
 *
1292 
 *    Fill Tx FIFO with transmit data
1293 
 *
1294 
 */
1295 
static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
1296 
{
1297 
        int actual = 0;
1298 
 
1299 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1300 
 
1301 
        /* Tx FIFO should be empty! */
1302 
        if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) {
1303 
                IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __FUNCTION__ );
1304 
                return 0;
1305 
        }
1306 
 
1307 
        /* Fill FIFO with current frame */
1308 
        while ((fifo_size-- > 0) && (actual < len)) {
1309 
                /* Transmit next byte */
1310 
                outb(buf[actual], iobase+UART_TX);
1311 
 
1312 
                actual++;
1313 
        }
1314 
 
1315 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1316 
        return actual;
1317 
}
1318 
 
1319 
/*
1320 
 * Function ali_ircc_net_open (dev)
1321 
 *
1322 
 *    Start the device
1323 
 *
1324 
 */
1325 
static int ali_ircc_net_open(struct net_device *dev)
1326 
{
1327 
        struct ali_ircc_cb *self;
1328 
        int iobase;
1329 
        char hwname[32];
1330 
 
1331 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1332 
 
1333 
        IRDA_ASSERT(dev != NULL, return -1;);
1334 
 
1335 
        self = (struct ali_ircc_cb *) dev->priv;
1336 
 
1337 
        IRDA_ASSERT(self != NULL, return 0;);
1338 
 
1339 
        iobase = self->io.fir_base;
1340 
 
1341 
        /* Request IRQ and install Interrupt Handler */
1342 
        if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev))
1343 
        {
1344 
                IRDA_WARNING("%s, unable to allocate irq=%d\n",
1345 
                             ALI_IRCC_DRIVER_NAME,
1346 
                             self->io.irq);
1347 
                return -EAGAIN;
1348 
        }
1349 
 
1350 
        /*
1351 
         * Always allocate the DMA channel after the IRQ, and clean up on
1352 
         * failure.
1353 
         */
1354 
        if (request_dma(self->io.dma, dev->name)) {
1355 
                IRDA_WARNING("%s, unable to allocate dma=%d\n",
1356 
                             ALI_IRCC_DRIVER_NAME,
1357 
                             self->io.dma);
1358 
                free_irq(self->io.irq, self);
1359 
                return -EAGAIN;
1360 
        }
1361 
 
1362 
        /* Turn on interrups */
1363 
        outb(UART_IER_RDI , iobase+UART_IER);
1364 
 
1365 
        /* Ready to play! */
1366 
        netif_start_queue(dev); //benjamin by irport
1367 
 
1368 
        /* Give self a hardware name */
1369 
        sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base);
1370 
 
1371 
        /*
1372 
         * Open new IrLAP layer instance, now that everything should be
1373 
         * initialized properly
1374 
         */
1375 
        self->irlap = irlap_open(dev, &self->qos, hwname);
1376 
 
1377 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1378 
 
1379 
        return 0;
1380 
}
1381 
 
1382 
/*
1383 
 * Function ali_ircc_net_close (dev)
1384 
 *
1385 
 *    Stop the device
1386 
 *
1387 
 */
1388 
static int ali_ircc_net_close(struct net_device *dev)
1389 
{
1390 
 
1391 
        struct ali_ircc_cb *self;
1392 
        //int iobase;
1393 
 
1394 
        IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1395 
 
1396 
        IRDA_ASSERT(dev != NULL, return -1;);
1397 
 
1398 
        self = (struct ali_ircc_cb *) dev->priv;
1399 
        IRDA_ASSERT(self != NULL, return 0;);
1400 
 
1401 
        /* Stop device */
1402 
        netif_stop_queue(dev);
1403 
 
1404 
        /* Stop and remove instance of IrLAP */
1405 
        if (self->irlap)
1406 
                irlap_close(self->irlap);
1407 
        self->irlap = NULL;
1408 
 
1409 
        disable_dma(self->io.dma);
1410 
 
1411 
        /* Disable interrupts */
1412 
        SetCOMInterrupts(self, FALSE);
1413 
 
1414 
        free_irq(self->io.irq, dev);
1415 
        free_dma(self->io.dma);
1416 
 
1417 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1418 
 
1419 
        return 0;
1420 
}
1421 
 
1422 
/*
1423 
 * Function ali_ircc_fir_hard_xmit (skb, dev)
1424 
 *
1425 
 *    Transmit the frame
1426 
 *
1427 
 */
1428 
static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev)
1429 
{
1430 
        struct ali_ircc_cb *self;
1431 
        unsigned long flags;
1432 
        int iobase;
1433 
        __u32 speed;
1434 
        int mtt, diff;
1435 
 
1436 
        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1437 
 
1438 
        self = (struct ali_ircc_cb *) dev->priv;
1439 
        iobase = self->io.fir_base;
1440 
 
1441 
        netif_stop_queue(dev);
1442 
 
1443 
        /* Make sure tests *& speed change are atomic */
1444 
        spin_lock_irqsave(&self->lock, flags);
1445 
 
1446 
        /* Note : you should make sure that speed changes are not going
1447 
         * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1448 
         * details - Jean II */
1449 
 
1450 
        /* Check if we need to change the speed */
1451 
        speed = irda_get_next_speed(skb);
1452 
        if ((speed != self->io.speed) && (speed != -1)) {
1453 
                /* Check for empty frame */
1454 
                if (!skb->len) {
1455 
                        ali_ircc_change_speed(self, speed);
1456 
                        dev->trans_start = jiffies;
1457 
                        spin_unlock_irqrestore(&self->lock, flags);
1458 
                        dev_kfree_skb(skb);
1459 
                        return 0;
1460 
                } else
1461 
                        self->new_speed = speed;
1462 
        }
1463 
 
1464 
        /* Register and copy this frame to DMA memory */
1465 
        self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail;
1466 
        self->tx_fifo.queue[self->tx_fifo.free].len = skb->len;
1467 
        self->tx_fifo.tail += skb->len;
1468 
 
1469 
        self->stats.tx_bytes += skb->len;
1470 
 
1471 
        skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start,
1472 
                      skb->len);
1473 
        self->tx_fifo.len++;
1474 
        self->tx_fifo.free++;
1475 
 
1476 
        /* Start transmit only if there is currently no transmit going on */
1477 
        if (self->tx_fifo.len == 1)
1478 
        {
1479 
                /* Check if we must wait the min turn time or not */
1480 
                mtt = irda_get_mtt(skb);
1481 
 
1482 
                if (mtt)
1483 
                {
1484 
                        /* Check how much time we have used already */
1485 
                        do_gettimeofday(&self->now);
1486 
 
1487 
                        diff = self->now.tv_usec - self->stamp.tv_usec;
1488 
                        /* self->stamp is set from ali_ircc_dma_receive_complete() */
1489 
 
1490 
                        IRDA_DEBUG(1, "%s(), ******* diff = %d ******* \n", __FUNCTION__ , diff);
1491 
 
1492 
                        if (diff < 0)
1493 
                                diff += 1000000;
1494 
 
1495 
                        /* Check if the mtt is larger than the time we have
1496 
                         * already used by all the protocol processing
1497 
                         */
1498 
                        if (mtt > diff)
1499 
                        {
1500 
                                mtt -= diff;
1501 
 
1502 
                                /*
1503 
                                 * Use timer if delay larger than 1000 us, and
1504 
                                 * use udelay for smaller values which should
1505 
                                 * be acceptable
1506 
                                 */
1507 
                                if (mtt > 500)
1508 
                                {
1509 
                                        /* Adjust for timer resolution */
1510 
                                        mtt = (mtt+250) / 500;  /* 4 discard, 5 get advanced, Let's round off */
1511 
 
1512 
                                        IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __FUNCTION__ , mtt);
1513 
 
1514 
                                        /* Setup timer */
1515 
                                        if (mtt == 1) /* 500 us */
1516 
                                        {
1517 
                                                switch_bank(iobase, BANK1);
1518 
                                                outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
1519 
                                        }
1520 
                                        else if (mtt == 2) /* 1 ms */
1521 
                                        {
1522 
                                                switch_bank(iobase, BANK1);
1523 
                                                outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR);
1524 
                                        }
1525 
                                        else /* > 2ms -> 4ms */
1526 
                                        {
1527 
                                                switch_bank(iobase, BANK1);
1528 
                                                outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR);
1529 
                                        }
1530 
 
1531 
 
1532 
                                        /* Start timer */
1533 
                                        outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1534 
                                        self->io.direction = IO_XMIT;
1535 
 
1536 
                                        /* Enable timer interrupt */
1537 
                                        self->ier = IER_TIMER;
1538 
                                        SetCOMInterrupts(self, TRUE);
1539 
 
1540 
                                        /* Timer will take care of the rest */
1541 
                                        goto out;
1542 
                                }
1543 
                                else
1544 
                                        udelay(mtt);
1545 
                        } // if (if (mtt > diff)
1546 
                }// if (mtt)
1547 
 
1548 
                /* Enable EOM interrupt */
1549 
                self->ier = IER_EOM;
1550 
                SetCOMInterrupts(self, TRUE);
1551 
 
1552 
                /* Transmit frame */
1553 
                ali_ircc_dma_xmit(self);
1554 
        } // if (self->tx_fifo.len == 1)
1555 
 
1556 
 out:
1557 
 
1558 
        /* Not busy transmitting anymore if window is not full */
1559 
        if (self->tx_fifo.free < MAX_TX_WINDOW)
1560 
                netif_wake_queue(self->netdev);
1561 
 
1562 
        /* Restore bank register */
1563 
        switch_bank(iobase, BANK0);
1564 
 
1565 
        dev->trans_start = jiffies;
1566 
        spin_unlock_irqrestore(&self->lock, flags);
1567 
        dev_kfree_skb(skb);
1568 
 
1569 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1570 
        return 0;
1571 
}
1572 
 
1573 
 
1574 
static void ali_ircc_dma_xmit(struct ali_ircc_cb *self)
1575 
{
1576 
        int iobase, tmp;
1577 
        unsigned char FIFO_OPTI, Hi, Lo;
1578 
 
1579 
 
1580 
        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1581 
 
1582 
        iobase = self->io.fir_base;
1583 
 
1584 
        /* FIFO threshold , this method comes from NDIS5 code */
1585 
 
1586 
        if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold)
1587 
                FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1;
1588 
        else
1589 
                FIFO_OPTI = TX_FIFO_Threshold;
1590 
 
1591 
        /* Disable DMA */
1592 
        switch_bank(iobase, BANK1);
1593 
        outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1594 
 
1595 
        self->io.direction = IO_XMIT;
1596 
 
1597 
        irda_setup_dma(self->io.dma,
1598 
                       ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start -
1599 
                        self->tx_buff.head) + self->tx_buff_dma,
1600 
                       self->tx_fifo.queue[self->tx_fifo.ptr].len,
1601 
                       DMA_TX_MODE);
1602 
 
1603 
        /* Reset Tx FIFO */
1604 
        switch_bank(iobase, BANK0);
1605 
        outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1606 
 
1607 
        /* Set Tx FIFO threshold */
1608 
        if (self->fifo_opti_buf!=FIFO_OPTI)
1609 
        {
1610 
                switch_bank(iobase, BANK1);
1611 
                outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ;
1612 
                self->fifo_opti_buf=FIFO_OPTI;
1613 
        }
1614 
 
1615 
        /* Set Tx DMA threshold */
1616 
        switch_bank(iobase, BANK1);
1617 
        outb(TX_DMA_Threshold, iobase+FIR_DMA_TR);
1618 
 
1619 
        /* Set max Tx frame size */
1620 
        Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f;
1621 
        Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff;
1622 
        switch_bank(iobase, BANK2);
1623 
        outb(Hi, iobase+FIR_TX_DSR_HI);
1624 
        outb(Lo, iobase+FIR_TX_DSR_LO);
1625 
 
1626 
        /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */
1627 
        switch_bank(iobase, BANK0);
1628 
        tmp = inb(iobase+FIR_LCR_B);
1629 
        tmp &= ~0x20; // Disable SIP
1630 
        outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B);
1631 
        IRDA_DEBUG(1, "%s(), ******* Change to TX mode: FIR_LCR_B = 0x%x ******* \n", __FUNCTION__ , inb(iobase+FIR_LCR_B));
1632 
 
1633 
        outb(0, iobase+FIR_LSR);
1634 
 
1635 
        /* Enable DMA and Burst Mode */
1636 
        switch_bank(iobase, BANK1);
1637 
        outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1638 
 
1639 
        switch_bank(iobase, BANK0);
1640 
 
1641 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1642 
}
1643 
 
1644 
static int  ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self)
1645 
{
1646 
        int iobase;
1647 
        int ret = TRUE;
1648 
 
1649 
        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1650 
 
1651 
        iobase = self->io.fir_base;
1652 
 
1653 
        /* Disable DMA */
1654 
        switch_bank(iobase, BANK1);
1655 
        outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1656 
 
1657 
        /* Check for underrun! */
1658 
        switch_bank(iobase, BANK0);
1659 
        if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT)
1660 
 
1661 
        {
1662 
                IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __FUNCTION__);
1663 
                self->stats.tx_errors++;
1664 
                self->stats.tx_fifo_errors++;
1665 
        }
1666 
        else
1667 
        {
1668 
                self->stats.tx_packets++;
1669 
        }
1670 
 
1671 
        /* Check if we need to change the speed */
1672 
        if (self->new_speed)
1673 
        {
1674 
                ali_ircc_change_speed(self, self->new_speed);
1675 
                self->new_speed = 0;
1676 
        }
1677 
 
1678 
        /* Finished with this frame, so prepare for next */
1679 
        self->tx_fifo.ptr++;
1680 
        self->tx_fifo.len--;
1681 
 
1682 
        /* Any frames to be sent back-to-back? */
1683 
        if (self->tx_fifo.len)
1684 
        {
1685 
                ali_ircc_dma_xmit(self);
1686 
 
1687 
                /* Not finished yet! */
1688 
                ret = FALSE;
1689 
        }
1690 
        else
1691 
        {       /* Reset Tx FIFO info */
1692 
                self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1693 
                self->tx_fifo.tail = self->tx_buff.head;
1694 
        }
1695 
 
1696 
        /* Make sure we have room for more frames */
1697 
        if (self->tx_fifo.free < MAX_TX_WINDOW) {
1698 
                /* Not busy transmitting anymore */
1699 
                /* Tell the network layer, that we can accept more frames */
1700 
                netif_wake_queue(self->netdev);
1701 
        }
1702 
 
1703 
        switch_bank(iobase, BANK0);
1704 
 
1705 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1706 
        return ret;
1707 
}
1708 
 
1709 
/*
1710 
 * Function ali_ircc_dma_receive (self)
1711 
 *
1712 
 *    Get ready for receiving a frame. The device will initiate a DMA
1713 
 *    if it starts to receive a frame.
1714 
 *
1715 
 */
1716 
static int ali_ircc_dma_receive(struct ali_ircc_cb *self)
1717 
{
1718 
        int iobase, tmp;
1719 
 
1720 
        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1721 
 
1722 
        iobase = self->io.fir_base;
1723 
 
1724 
        /* Reset Tx FIFO info */
1725 
        self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1726 
        self->tx_fifo.tail = self->tx_buff.head;
1727 
 
1728 
        /* Disable DMA */
1729 
        switch_bank(iobase, BANK1);
1730 
        outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1731 
 
1732 
        /* Reset Message Count */
1733 
        switch_bank(iobase, BANK0);
1734 
        outb(0x07, iobase+FIR_LSR);
1735 
 
1736 
        self->rcvFramesOverflow = FALSE;
1737 
 
1738 
        self->LineStatus = inb(iobase+FIR_LSR) ;
1739 
 
1740 
        /* Reset Rx FIFO info */
1741 
        self->io.direction = IO_RECV;
1742 
        self->rx_buff.data = self->rx_buff.head;
1743 
 
1744 
        /* Reset Rx FIFO */
1745 
        // switch_bank(iobase, BANK0);
1746 
        outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1747 
 
1748 
        self->st_fifo.len = self->st_fifo.pending_bytes = 0;
1749 
        self->st_fifo.tail = self->st_fifo.head = 0;
1750 
 
1751 
        irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1752 
                       DMA_RX_MODE);
1753 
 
1754 
        /* Set Receive Mode,Brick Wall */
1755 
        //switch_bank(iobase, BANK0);
1756 
        tmp = inb(iobase+FIR_LCR_B);
1757 
        outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM
1758 
        IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x *** \n", __FUNCTION__ , inb(iobase+FIR_LCR_B));
1759 
 
1760 
        /* Set Rx Threshold */
1761 
        switch_bank(iobase, BANK1);
1762 
        outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
1763 
        outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
1764 
 
1765 
        /* Enable DMA and Burst Mode */
1766 
        // switch_bank(iobase, BANK1);
1767 
        outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1768 
 
1769 
        switch_bank(iobase, BANK0);
1770 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1771 
        return 0;
1772 
}
1773 
 
1774 
static int  ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
1775 
{
1776 
        struct st_fifo *st_fifo;
1777 
        struct sk_buff *skb;
1778 
        __u8 status, MessageCount;
1779 
        int len, i, iobase, val;
1780 
 
1781 
        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1782 
 
1783 
        st_fifo = &self->st_fifo;
1784 
        iobase = self->io.fir_base;
1785 
 
1786 
        switch_bank(iobase, BANK0);
1787 
        MessageCount = inb(iobase+ FIR_LSR)&0x07;
1788 
 
1789 
        if (MessageCount > 0)
1790 
                IRDA_DEBUG(0, "%s(), Messsage count = %d,\n", __FUNCTION__ , MessageCount);
1791 
 
1792 
        for (i=0; i<=MessageCount; i++)
1793 
        {
1794 
                /* Bank 0 */
1795 
                switch_bank(iobase, BANK0);
1796 
                status = inb(iobase+FIR_LSR);
1797 
 
1798 
                switch_bank(iobase, BANK2);
1799 
                len = inb(iobase+FIR_RX_DSR_HI) & 0x0f;
1800 
                len = len << 8;
1801 
                len |= inb(iobase+FIR_RX_DSR_LO);
1802 
 
1803 
                IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __FUNCTION__ , len);
1804 
                IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __FUNCTION__ , status);
1805 
 
1806 
                if (st_fifo->tail >= MAX_RX_WINDOW) {
1807 
                        IRDA_DEBUG(0, "%s(), window is full!\n", __FUNCTION__ );
1808 
                        continue;
1809 
                }
1810 
 
1811 
                st_fifo->entries[st_fifo->tail].status = status;
1812 
                st_fifo->entries[st_fifo->tail].len = len;
1813 
                st_fifo->pending_bytes += len;
1814 
                st_fifo->tail++;
1815 
                st_fifo->len++;
1816 
        }
1817 
 
1818 
        for (i=0; i<=MessageCount; i++)
1819 
        {
1820 
                /* Get first entry */
1821 
                status = st_fifo->entries[st_fifo->head].status;
1822 
                len    = st_fifo->entries[st_fifo->head].len;
1823 
                st_fifo->pending_bytes -= len;
1824 
                st_fifo->head++;
1825 
                st_fifo->len--;
1826 
 
1827 
                /* Check for errors */
1828 
                if ((status & 0xd8) || self->rcvFramesOverflow || (len==0))
1829 
                {
1830 
                        IRDA_DEBUG(0,"%s(), ************* RX Errors ************ \n", __FUNCTION__ );
1831 
 
1832 
                        /* Skip frame */
1833 
                        self->stats.rx_errors++;
1834 
 
1835 
                        self->rx_buff.data += len;
1836 
 
1837 
                        if (status & LSR_FIFO_UR)
1838 
                        {
1839 
                                self->stats.rx_frame_errors++;
1840 
                                IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************ \n", __FUNCTION__ );
1841 
                        }
1842 
                        if (status & LSR_FRAME_ERROR)
1843 
                        {
1844 
                                self->stats.rx_frame_errors++;
1845 
                                IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************ \n", __FUNCTION__ );
1846 
                        }
1847 
 
1848 
                        if (status & LSR_CRC_ERROR)
1849 
                        {
1850 
                                self->stats.rx_crc_errors++;
1851 
                                IRDA_DEBUG(0,"%s(), ************* CRC Errors ************ \n", __FUNCTION__ );
1852 
                        }
1853 
 
1854 
                        if(self->rcvFramesOverflow)
1855 
                        {
1856 
                                self->stats.rx_frame_errors++;
1857 
                                IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************ \n", __FUNCTION__ );
1858 
                        }
1859 
                        if(len == 0)
1860 
                        {
1861 
                                self->stats.rx_frame_errors++;
1862 
                                IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 ********* \n", __FUNCTION__ );
1863 
                        }
1864 
                }
1865 
                else
1866 
                {
1867 
 
1868 
                        if (st_fifo->pending_bytes < 32)
1869 
                        {
1870 
                                switch_bank(iobase, BANK0);
1871 
                                val = inb(iobase+FIR_BSR);
1872 
                                if ((val& BSR_FIFO_NOT_EMPTY)== 0x80)
1873 
                                {
1874 
                                        IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************ \n", __FUNCTION__ );
1875 
 
1876 
                                        /* Put this entry back in fifo */
1877 
                                        st_fifo->head--;
1878 
                                        st_fifo->len++;
1879 
                                        st_fifo->pending_bytes += len;
1880 
                                        st_fifo->entries[st_fifo->head].status = status;
1881 
                                        st_fifo->entries[st_fifo->head].len = len;
1882 
 
1883 
                                        /*
1884 
                                        * DMA not finished yet, so try again
1885 
                                        * later, set timer value, resolution
1886 
                                        * 500 us
1887 
                                        */
1888 
 
1889 
                                        switch_bank(iobase, BANK1);
1890 
                                        outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM
1891 
 
1892 
                                        /* Enable Timer */
1893 
                                        outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1894 
 
1895 
                                        return FALSE; /* I'll be back! */
1896 
                                }
1897 
                        }
1898 
 
1899 
                        /*
1900 
                         * Remember the time we received this frame, so we can
1901 
                         * reduce the min turn time a bit since we will know
1902 
                         * how much time we have used for protocol processing
1903 
                         */
1904 
                        do_gettimeofday(&self->stamp);
1905 
 
1906 
                        skb = dev_alloc_skb(len+1);
1907 
                        if (skb == NULL)
1908 
                        {
1909 
                                IRDA_WARNING("%s(), memory squeeze, "
1910 
                                             "dropping frame.\n",
1911 
                                             __FUNCTION__);
1912 
                                self->stats.rx_dropped++;
1913 
 
1914 
                                return FALSE;
1915 
                        }
1916 
 
1917 
                        /* Make sure IP header gets aligned */
1918 
                        skb_reserve(skb, 1);
1919 
 
1920 
                        /* Copy frame without CRC, CRC is removed by hardware*/
1921 
                        skb_put(skb, len);
1922 
                        skb_copy_to_linear_data(skb, self->rx_buff.data, len);
1923 
 
1924 
                        /* Move to next frame */
1925 
                        self->rx_buff.data += len;
1926 
                        self->stats.rx_bytes += len;
1927 
                        self->stats.rx_packets++;
1928 
 
1929 
                        skb->dev = self->netdev;
1930 
                        skb_reset_mac_header(skb);
1931 
                        skb->protocol = htons(ETH_P_IRDA);
1932 
                        netif_rx(skb);
1933 
                        self->netdev->last_rx = jiffies;
1934 
                }
1935 
        }
1936 
 
1937 
        switch_bank(iobase, BANK0);
1938 
 
1939 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1940 
        return TRUE;
1941 
}
1942 
 
1943 
 
1944 
 
1945 
/*
1946 
 * Function ali_ircc_sir_hard_xmit (skb, dev)
1947 
 *
1948 
 *    Transmit the frame!
1949 
 *
1950 
 */
1951 
static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev)
1952 
{
1953 
        struct ali_ircc_cb *self;
1954 
        unsigned long flags;
1955 
        int iobase;
1956 
        __u32 speed;
1957 
 
1958 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1959 
 
1960 
        IRDA_ASSERT(dev != NULL, return 0;);
1961 
 
1962 
        self = (struct ali_ircc_cb *) dev->priv;
1963 
        IRDA_ASSERT(self != NULL, return 0;);
1964 
 
1965 
        iobase = self->io.sir_base;
1966 
 
1967 
        netif_stop_queue(dev);
1968 
 
1969 
        /* Make sure tests *& speed change are atomic */
1970 
        spin_lock_irqsave(&self->lock, flags);
1971 
 
1972 
        /* Note : you should make sure that speed changes are not going
1973 
         * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1974 
         * details - Jean II */
1975 
 
1976 
        /* Check if we need to change the speed */
1977 
        speed = irda_get_next_speed(skb);
1978 
        if ((speed != self->io.speed) && (speed != -1)) {
1979 
                /* Check for empty frame */
1980 
                if (!skb->len) {
1981 
                        ali_ircc_change_speed(self, speed);
1982 
                        dev->trans_start = jiffies;
1983 
                        spin_unlock_irqrestore(&self->lock, flags);
1984 
                        dev_kfree_skb(skb);
1985 
                        return 0;
1986 
                } else
1987 
                        self->new_speed = speed;
1988 
        }
1989 
 
1990 
        /* Init tx buffer */
1991 
        self->tx_buff.data = self->tx_buff.head;
1992 
 
1993 
        /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
1994 
        self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
1995 
                                           self->tx_buff.truesize);
1996 
 
1997 
        self->stats.tx_bytes += self->tx_buff.len;
1998 
 
1999 
        /* Turn on transmit finished interrupt. Will fire immediately!  */
2000 
        outb(UART_IER_THRI, iobase+UART_IER);
2001 
 
2002 
        dev->trans_start = jiffies;
2003 
        spin_unlock_irqrestore(&self->lock, flags);
2004 
 
2005 
        dev_kfree_skb(skb);
2006 
 
2007 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2008 
 
2009 
        return 0;
2010 
}
2011 
 
2012 
 
2013 
/*
2014 
 * Function ali_ircc_net_ioctl (dev, rq, cmd)
2015 
 *
2016 
 *    Process IOCTL commands for this device
2017 
 *
2018 
 */
2019 
static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2020 
{
2021 
        struct if_irda_req *irq = (struct if_irda_req *) rq;
2022 
        struct ali_ircc_cb *self;
2023 
        unsigned long flags;
2024 
        int ret = 0;
2025 
 
2026 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2027 
 
2028 
        IRDA_ASSERT(dev != NULL, return -1;);
2029 
 
2030 
        self = dev->priv;
2031 
 
2032 
        IRDA_ASSERT(self != NULL, return -1;);
2033 
 
2034 
        IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__ , dev->name, cmd);
2035 
 
2036 
        switch (cmd) {
2037 
        case SIOCSBANDWIDTH: /* Set bandwidth */
2038 
                IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __FUNCTION__ );
2039 
                /*
2040 
                 * This function will also be used by IrLAP to change the
2041 
                 * speed, so we still must allow for speed change within
2042 
                 * interrupt context.
2043 
                 */
2044 
                if (!in_interrupt() && !capable(CAP_NET_ADMIN))
2045 
                        return -EPERM;
2046 
 
2047 
                spin_lock_irqsave(&self->lock, flags);
2048 
                ali_ircc_change_speed(self, irq->ifr_baudrate);
2049 
                spin_unlock_irqrestore(&self->lock, flags);
2050 
                break;
2051 
        case SIOCSMEDIABUSY: /* Set media busy */
2052 
                IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __FUNCTION__ );
2053 
                if (!capable(CAP_NET_ADMIN))
2054 
                        return -EPERM;
2055 
                irda_device_set_media_busy(self->netdev, TRUE);
2056 
                break;
2057 
        case SIOCGRECEIVING: /* Check if we are receiving right now */
2058 
                IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __FUNCTION__ );
2059 
                /* This is protected */
2060 
                irq->ifr_receiving = ali_ircc_is_receiving(self);
2061 
                break;
2062 
        default:
2063 
                ret = -EOPNOTSUPP;
2064 
        }
2065 
 
2066 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2067 
 
2068 
        return ret;
2069 
}
2070 
 
2071 
/*
2072 
 * Function ali_ircc_is_receiving (self)
2073 
 *
2074 
 *    Return TRUE is we are currently receiving a frame
2075 
 *
2076 
 */
2077 
static int ali_ircc_is_receiving(struct ali_ircc_cb *self)
2078 
{
2079 
        unsigned long flags;
2080 
        int status = FALSE;
2081 
        int iobase;
2082 
 
2083 
        IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
2084 
 
2085 
        IRDA_ASSERT(self != NULL, return FALSE;);
2086 
 
2087 
        spin_lock_irqsave(&self->lock, flags);
2088 
 
2089 
        if (self->io.speed > 115200)
2090 
        {
2091 
                iobase = self->io.fir_base;
2092 
 
2093 
                switch_bank(iobase, BANK1);
2094 
                if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0)
2095 
                {
2096 
                        /* We are receiving something */
2097 
                        IRDA_DEBUG(1, "%s(), We are receiving something\n", __FUNCTION__ );
2098 
                        status = TRUE;
2099 
                }
2100 
                switch_bank(iobase, BANK0);
2101 
        }
2102 
        else
2103 
        {
2104 
                status = (self->rx_buff.state != OUTSIDE_FRAME);
2105 
        }
2106 
 
2107 
        spin_unlock_irqrestore(&self->lock, flags);
2108 
 
2109 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2110 
 
2111 
        return status;
2112 
}
2113 
 
2114 
static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev)
2115 
{
2116 
        struct ali_ircc_cb *self = (struct ali_ircc_cb *) dev->priv;
2117 
 
2118 
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2119 
 
2120 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2121 
 
2122 
        return &self->stats;
2123 
}
2124 
 
2125 
static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state)
2126 
{
2127 
        struct ali_ircc_cb *self = platform_get_drvdata(dev);
2128 
 
2129 
        IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME);
2130 
 
2131 
        if (self->io.suspended)
2132 
                return 0;
2133 
 
2134 
        ali_ircc_net_close(self->netdev);
2135 
 
2136 
        self->io.suspended = 1;
2137 
 
2138 
        return 0;
2139 
}
2140 
 
2141 
static int ali_ircc_resume(struct platform_device *dev)
2142 
{
2143 
        struct ali_ircc_cb *self = platform_get_drvdata(dev);
2144 
 
2145 
        if (!self->io.suspended)
2146 
                return 0;
2147 
 
2148 
        ali_ircc_net_open(self->netdev);
2149 
 
2150 
        IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME);
2151 
 
2152 
        self->io.suspended = 0;
2153 
 
2154 
        return 0;
2155 
}
2156 
 
2157 
/* ALi Chip Function */
2158 
 
2159 
static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable)
2160 
{
2161 
 
2162 
        unsigned char newMask;
2163 
 
2164 
        int iobase = self->io.fir_base; /* or sir_base */
2165 
 
2166 
        IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __FUNCTION__ , enable);
2167 
 
2168 
        /* Enable the interrupt which we wish to */
2169 
        if (enable){
2170 
                if (self->io.direction == IO_XMIT)
2171 
                {
2172 
                        if (self->io.speed > 115200) /* FIR, MIR */
2173 
                        {
2174 
                                newMask = self->ier;
2175 
                        }
2176 
                        else /* SIR */
2177 
                        {
2178 
                                newMask = UART_IER_THRI | UART_IER_RDI;
2179 
                        }
2180 
                }
2181 
                else {
2182 
                        if (self->io.speed > 115200) /* FIR, MIR */
2183 
                        {
2184 
                                newMask = self->ier;
2185 
                        }
2186 
                        else /* SIR */
2187 
                        {
2188 
                                newMask = UART_IER_RDI;
2189 
                        }
2190 
                }
2191 
        }
2192 
        else /* Disable all the interrupts */
2193 
        {
2194 
                newMask = 0x00;
2195 
 
2196 
        }
2197 
 
2198 
        //SIR and FIR has different registers
2199 
        if (self->io.speed > 115200)
2200 
        {
2201 
                switch_bank(iobase, BANK0);
2202 
                outb(newMask, iobase+FIR_IER);
2203 
        }
2204 
        else
2205 
                outb(newMask, iobase+UART_IER);
2206 
 
2207 
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2208 
}
2209 
 
2210 
static void SIR2FIR(int iobase)
2211 
{
2212 
        //unsigned char tmp;
2213 
 
2214 
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2215 
 
2216 
        /* Already protected (change_speed() or setup()), no need to lock.
2217 
         * Jean II */
2218 
 
2219 
        outb(0x28, iobase+UART_MCR);
2220 
        outb(0x68, iobase+UART_MCR);
2221 
        outb(0x88, iobase+UART_MCR);
2222 
 
2223 
        outb(0x60, iobase+FIR_MCR);     /*  Master Reset */
2224 
        outb(0x20, iobase+FIR_MCR);     /*  Master Interrupt Enable */
2225 
 
2226 
        //tmp = inb(iobase+FIR_LCR_B);  /* SIP enable */
2227 
        //tmp |= 0x20;
2228 
        //outb(tmp, iobase+FIR_LCR_B);
2229 
 
2230 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2231 
}
2232 
 
2233 
static void FIR2SIR(int iobase)
2234 
{
2235 
        unsigned char val;
2236 
 
2237 
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2238 
 
2239 
        /* Already protected (change_speed() or setup()), no need to lock.
2240 
         * Jean II */
2241 
 
2242 
        outb(0x20, iobase+FIR_MCR);     /* IRQ to low */
2243 
        outb(0x00, iobase+UART_IER);
2244 
 
2245 
        outb(0xA0, iobase+FIR_MCR);     /* Don't set master reset */
2246 
        outb(0x00, iobase+UART_FCR);
2247 
        outb(0x07, iobase+UART_FCR);
2248 
 
2249 
        val = inb(iobase+UART_RX);
2250 
        val = inb(iobase+UART_LSR);
2251 
        val = inb(iobase+UART_MSR);
2252 
 
2253 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2254 
}
2255 
 
2256 
MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>");
2257 
MODULE_DESCRIPTION("ALi FIR Controller Driver");
2258 
MODULE_LICENSE("GPL");
2259 
 
2260 
 
2261 
module_param_array(io, int, NULL, 0);
2262 
MODULE_PARM_DESC(io, "Base I/O addresses");
2263 
module_param_array(irq, int, NULL, 0);
2264 
MODULE_PARM_DESC(irq, "IRQ lines");
2265 
module_param_array(dma, int, NULL, 0);
2266 
MODULE_PARM_DESC(dma, "DMA channels");
2267 
 
2268 
module_init(ali_ircc_init);
2269 
module_exit(ali_ircc_cleanup);

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