Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /********************************************************************* |
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 | ||
38 | #include <asm/io.h> | |
39 | #include <asm/dma.h> | |
40 | #include <asm/byteorder.h> | |
41 | ||
42 | #include <linux/pm.h> | |
bca73e4b | 43 | #include <linux/pm_legacy.h> |
1da177e4 LT |
44 | |
45 | #include <net/irda/wrapper.h> | |
46 | #include <net/irda/irda.h> | |
47 | #include <net/irda/irda_device.h> | |
48 | ||
49 | #include "ali-ircc.h" | |
50 | ||
51 | #define CHIP_IO_EXTENT 8 | |
52 | #define BROKEN_DONGLE_ID | |
53 | ||
54 | static char *driver_name = "ali-ircc"; | |
55 | ||
56 | /* Module parameters */ | |
57 | static int qos_mtt_bits = 0x07; /* 1 ms or more */ | |
58 | ||
59 | /* Use BIOS settions by default, but user may supply module parameters */ | |
60 | static unsigned int io[] = { ~0, ~0, ~0, ~0 }; | |
61 | static unsigned int irq[] = { 0, 0, 0, 0 }; | |
62 | static unsigned int dma[] = { 0, 0, 0, 0 }; | |
63 | ||
64 | static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info); | |
65 | static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info); | |
66 | static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info); | |
67 | ||
68 | /* These are the currently known ALi sourth-bridge chipsets, the only one difference | |
69 | * is that M1543C doesn't support HP HDSL-3600 | |
70 | */ | |
71 | static ali_chip_t chips[] = | |
72 | { | |
73 | { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 }, | |
74 | { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 }, | |
75 | { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 }, | |
76 | { NULL } | |
77 | }; | |
78 | ||
79 | /* Max 4 instances for now */ | |
80 | static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL }; | |
81 | ||
82 | /* Dongle Types */ | |
83 | static char *dongle_types[] = { | |
84 | "TFDS6000", | |
85 | "HP HSDL-3600", | |
86 | "HP HSDL-1100", | |
87 | "No dongle connected", | |
88 | }; | |
89 | ||
90 | /* Some prototypes */ | |
91 | static int ali_ircc_open(int i, chipio_t *info); | |
92 | ||
93 | static int ali_ircc_close(struct ali_ircc_cb *self); | |
94 | ||
95 | static int ali_ircc_setup(chipio_t *info); | |
96 | static int ali_ircc_is_receiving(struct ali_ircc_cb *self); | |
97 | static int ali_ircc_net_open(struct net_device *dev); | |
98 | static int ali_ircc_net_close(struct net_device *dev); | |
99 | static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
100 | static int ali_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data); | |
101 | static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud); | |
102 | static void ali_ircc_suspend(struct ali_ircc_cb *self); | |
103 | static void ali_ircc_wakeup(struct ali_ircc_cb *self); | |
104 | static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev); | |
105 | ||
106 | /* SIR function */ | |
107 | static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev); | |
108 | static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self); | |
109 | static void ali_ircc_sir_receive(struct ali_ircc_cb *self); | |
110 | static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self); | |
111 | static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); | |
112 | static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed); | |
113 | ||
114 | /* FIR function */ | |
115 | static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev); | |
116 | static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed); | |
117 | static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self); | |
118 | static int ali_ircc_dma_receive(struct ali_ircc_cb *self); | |
119 | static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self); | |
120 | static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self); | |
121 | static void ali_ircc_dma_xmit(struct ali_ircc_cb *self); | |
122 | ||
123 | /* My Function */ | |
124 | static int ali_ircc_read_dongle_id (int i, chipio_t *info); | |
125 | static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed); | |
126 | ||
127 | /* ALi chip function */ | |
128 | static void SIR2FIR(int iobase); | |
129 | static void FIR2SIR(int iobase); | |
130 | static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable); | |
131 | ||
132 | /* | |
133 | * Function ali_ircc_init () | |
134 | * | |
135 | * Initialize chip. Find out whay kinds of chips we are dealing with | |
136 | * and their configuation registers address | |
137 | */ | |
138 | static int __init ali_ircc_init(void) | |
139 | { | |
140 | ali_chip_t *chip; | |
141 | chipio_t info; | |
142 | int ret = -ENODEV; | |
143 | int cfg, cfg_base; | |
144 | int reg, revision; | |
145 | int i = 0; | |
146 | ||
147 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
148 | ||
149 | /* Probe for all the ALi chipsets we know about */ | |
150 | for (chip= chips; chip->name; chip++, i++) | |
151 | { | |
152 | IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __FUNCTION__, chip->name); | |
153 | ||
154 | /* Try all config registers for this chip */ | |
155 | for (cfg=0; cfg<2; cfg++) | |
156 | { | |
157 | cfg_base = chip->cfg[cfg]; | |
158 | if (!cfg_base) | |
159 | continue; | |
160 | ||
161 | memset(&info, 0, sizeof(chipio_t)); | |
162 | info.cfg_base = cfg_base; | |
163 | info.fir_base = io[i]; | |
164 | info.dma = dma[i]; | |
165 | info.irq = irq[i]; | |
166 | ||
167 | ||
168 | /* Enter Configuration */ | |
169 | outb(chip->entr1, cfg_base); | |
170 | outb(chip->entr2, cfg_base); | |
171 | ||
172 | /* Select Logical Device 5 Registers (UART2) */ | |
173 | outb(0x07, cfg_base); | |
174 | outb(0x05, cfg_base+1); | |
175 | ||
176 | /* Read Chip Identification Register */ | |
177 | outb(chip->cid_index, cfg_base); | |
178 | reg = inb(cfg_base+1); | |
179 | ||
180 | if (reg == chip->cid_value) | |
181 | { | |
182 | IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __FUNCTION__, cfg_base); | |
183 | ||
184 | outb(0x1F, cfg_base); | |
185 | revision = inb(cfg_base+1); | |
186 | IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __FUNCTION__, | |
187 | chip->name, revision); | |
188 | ||
189 | /* | |
190 | * If the user supplies the base address, then | |
191 | * we init the chip, if not we probe the values | |
192 | * set by the BIOS | |
193 | */ | |
194 | if (io[i] < 2000) | |
195 | { | |
196 | chip->init(chip, &info); | |
197 | } | |
198 | else | |
199 | { | |
200 | chip->probe(chip, &info); | |
201 | } | |
202 | ||
203 | if (ali_ircc_open(i, &info) == 0) | |
204 | ret = 0; | |
205 | i++; | |
206 | } | |
207 | else | |
208 | { | |
209 | IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __FUNCTION__, chip->name, cfg_base); | |
210 | } | |
211 | /* Exit configuration */ | |
212 | outb(0xbb, cfg_base); | |
213 | } | |
214 | } | |
215 | ||
216 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); | |
217 | return ret; | |
218 | } | |
219 | ||
220 | /* | |
221 | * Function ali_ircc_cleanup () | |
222 | * | |
223 | * Close all configured chips | |
224 | * | |
225 | */ | |
226 | static void __exit ali_ircc_cleanup(void) | |
227 | { | |
228 | int i; | |
229 | ||
230 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
231 | ||
232 | pm_unregister_all(ali_ircc_pmproc); | |
233 | ||
234 | for (i=0; i < 4; i++) { | |
235 | if (dev_self[i]) | |
236 | ali_ircc_close(dev_self[i]); | |
237 | } | |
238 | ||
239 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); | |
240 | } | |
241 | ||
242 | /* | |
243 | * Function ali_ircc_open (int i, chipio_t *inf) | |
244 | * | |
245 | * Open driver instance | |
246 | * | |
247 | */ | |
248 | static int ali_ircc_open(int i, chipio_t *info) | |
249 | { | |
250 | struct net_device *dev; | |
251 | struct ali_ircc_cb *self; | |
252 | struct pm_dev *pmdev; | |
253 | int dongle_id; | |
254 | int err; | |
255 | ||
256 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
257 | ||
258 | /* Set FIR FIFO and DMA Threshold */ | |
259 | if ((ali_ircc_setup(info)) == -1) | |
260 | return -1; | |
261 | ||
262 | dev = alloc_irdadev(sizeof(*self)); | |
263 | if (dev == NULL) { | |
264 | IRDA_ERROR("%s(), can't allocate memory for control block!\n", | |
265 | __FUNCTION__); | |
266 | return -ENOMEM; | |
267 | } | |
268 | ||
269 | self = dev->priv; | |
270 | self->netdev = dev; | |
271 | spin_lock_init(&self->lock); | |
272 | ||
273 | /* Need to store self somewhere */ | |
274 | dev_self[i] = self; | |
275 | self->index = i; | |
276 | ||
277 | /* Initialize IO */ | |
278 | self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */ | |
279 | self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */ | |
280 | self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */ | |
281 | self->io.irq = info->irq; | |
282 | self->io.fir_ext = CHIP_IO_EXTENT; | |
283 | self->io.dma = info->dma; | |
284 | self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */ | |
285 | ||
286 | /* Reserve the ioports that we need */ | |
287 | if (!request_region(self->io.fir_base, self->io.fir_ext, driver_name)) { | |
288 | IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __FUNCTION__, | |
289 | self->io.fir_base); | |
290 | err = -ENODEV; | |
291 | goto err_out1; | |
292 | } | |
293 | ||
294 | /* Initialize QoS for this device */ | |
295 | irda_init_max_qos_capabilies(&self->qos); | |
296 | ||
297 | /* The only value we must override it the baudrate */ | |
298 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| | |
299 | IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM | |
300 | ||
301 | self->qos.min_turn_time.bits = qos_mtt_bits; | |
302 | ||
303 | irda_qos_bits_to_value(&self->qos); | |
304 | ||
305 | /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ | |
306 | self->rx_buff.truesize = 14384; | |
307 | self->tx_buff.truesize = 14384; | |
308 | ||
309 | /* Allocate memory if needed */ | |
310 | self->rx_buff.head = | |
311 | dma_alloc_coherent(NULL, self->rx_buff.truesize, | |
312 | &self->rx_buff_dma, GFP_KERNEL); | |
313 | if (self->rx_buff.head == NULL) { | |
314 | err = -ENOMEM; | |
315 | goto err_out2; | |
316 | } | |
317 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); | |
318 | ||
319 | self->tx_buff.head = | |
320 | dma_alloc_coherent(NULL, self->tx_buff.truesize, | |
321 | &self->tx_buff_dma, GFP_KERNEL); | |
322 | if (self->tx_buff.head == NULL) { | |
323 | err = -ENOMEM; | |
324 | goto err_out3; | |
325 | } | |
326 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); | |
327 | ||
328 | self->rx_buff.in_frame = FALSE; | |
329 | self->rx_buff.state = OUTSIDE_FRAME; | |
330 | self->tx_buff.data = self->tx_buff.head; | |
331 | self->rx_buff.data = self->rx_buff.head; | |
332 | ||
333 | /* Reset Tx queue info */ | |
334 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; | |
335 | self->tx_fifo.tail = self->tx_buff.head; | |
336 | ||
337 | ||
338 | /* Keep track of module usage */ | |
339 | SET_MODULE_OWNER(dev); | |
340 | ||
341 | /* Override the network functions we need to use */ | |
342 | dev->hard_start_xmit = ali_ircc_sir_hard_xmit; | |
343 | dev->open = ali_ircc_net_open; | |
344 | dev->stop = ali_ircc_net_close; | |
345 | dev->do_ioctl = ali_ircc_net_ioctl; | |
346 | dev->get_stats = ali_ircc_net_get_stats; | |
347 | ||
348 | err = register_netdev(dev); | |
349 | if (err) { | |
350 | IRDA_ERROR("%s(), register_netdev() failed!\n", __FUNCTION__); | |
351 | goto err_out4; | |
352 | } | |
353 | IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); | |
354 | ||
355 | /* Check dongle id */ | |
356 | dongle_id = ali_ircc_read_dongle_id(i, info); | |
357 | IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __FUNCTION__, driver_name, dongle_types[dongle_id]); | |
358 | ||
359 | self->io.dongle_id = dongle_id; | |
360 | ||
361 | pmdev = pm_register(PM_SYS_DEV, PM_SYS_IRDA, ali_ircc_pmproc); | |
362 | if (pmdev) | |
363 | pmdev->data = self; | |
364 | ||
365 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); | |
366 | ||
367 | return 0; | |
368 | ||
369 | err_out4: | |
370 | dma_free_coherent(NULL, self->tx_buff.truesize, | |
371 | self->tx_buff.head, self->tx_buff_dma); | |
372 | err_out3: | |
373 | dma_free_coherent(NULL, self->rx_buff.truesize, | |
374 | self->rx_buff.head, self->rx_buff_dma); | |
375 | err_out2: | |
376 | release_region(self->io.fir_base, self->io.fir_ext); | |
377 | err_out1: | |
378 | dev_self[i] = NULL; | |
379 | free_netdev(dev); | |
380 | return err; | |
381 | } | |
382 | ||
383 | ||
384 | /* | |
385 | * Function ali_ircc_close (self) | |
386 | * | |
387 | * Close driver instance | |
388 | * | |
389 | */ | |
390 | static int __exit ali_ircc_close(struct ali_ircc_cb *self) | |
391 | { | |
392 | int iobase; | |
393 | ||
394 | IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
395 | ||
396 | IRDA_ASSERT(self != NULL, return -1;); | |
397 | ||
398 | iobase = self->io.fir_base; | |
399 | ||
400 | /* Remove netdevice */ | |
401 | unregister_netdev(self->netdev); | |
402 | ||
403 | /* Release the PORT that this driver is using */ | |
404 | IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __FUNCTION__, self->io.fir_base); | |
405 | release_region(self->io.fir_base, self->io.fir_ext); | |
406 | ||
407 | if (self->tx_buff.head) | |
408 | dma_free_coherent(NULL, self->tx_buff.truesize, | |
409 | self->tx_buff.head, self->tx_buff_dma); | |
410 | ||
411 | if (self->rx_buff.head) | |
412 | dma_free_coherent(NULL, self->rx_buff.truesize, | |
413 | self->rx_buff.head, self->rx_buff_dma); | |
414 | ||
415 | dev_self[self->index] = NULL; | |
416 | free_netdev(self->netdev); | |
417 | ||
418 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | /* | |
424 | * Function ali_ircc_init_43 (chip, info) | |
425 | * | |
426 | * Initialize the ALi M1543 chip. | |
427 | */ | |
428 | static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info) | |
429 | { | |
430 | /* All controller information like I/O address, DMA channel, IRQ | |
431 | * are set by BIOS | |
432 | */ | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
437 | /* | |
438 | * Function ali_ircc_init_53 (chip, info) | |
439 | * | |
440 | * Initialize the ALi M1535 chip. | |
441 | */ | |
442 | static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info) | |
443 | { | |
444 | /* All controller information like I/O address, DMA channel, IRQ | |
445 | * are set by BIOS | |
446 | */ | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
451 | /* | |
452 | * Function ali_ircc_probe_53 (chip, info) | |
453 | * | |
454 | * Probes for the ALi M1535D or M1535 | |
455 | */ | |
456 | static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info) | |
457 | { | |
458 | int cfg_base = info->cfg_base; | |
459 | int hi, low, reg; | |
460 | ||
461 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
462 | ||
463 | /* Enter Configuration */ | |
464 | outb(chip->entr1, cfg_base); | |
465 | outb(chip->entr2, cfg_base); | |
466 | ||
467 | /* Select Logical Device 5 Registers (UART2) */ | |
468 | outb(0x07, cfg_base); | |
469 | outb(0x05, cfg_base+1); | |
470 | ||
471 | /* Read address control register */ | |
472 | outb(0x60, cfg_base); | |
473 | hi = inb(cfg_base+1); | |
474 | outb(0x61, cfg_base); | |
475 | low = inb(cfg_base+1); | |
476 | info->fir_base = (hi<<8) + low; | |
477 | ||
478 | info->sir_base = info->fir_base; | |
479 | ||
480 | IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __FUNCTION__, info->fir_base); | |
481 | ||
482 | /* Read IRQ control register */ | |
483 | outb(0x70, cfg_base); | |
484 | reg = inb(cfg_base+1); | |
485 | info->irq = reg & 0x0f; | |
486 | IRDA_DEBUG(2, "%s(), probing irq=%d\n", __FUNCTION__, info->irq); | |
487 | ||
488 | /* Read DMA channel */ | |
489 | outb(0x74, cfg_base); | |
490 | reg = inb(cfg_base+1); | |
491 | info->dma = reg & 0x07; | |
492 | ||
493 | if(info->dma == 0x04) | |
494 | IRDA_WARNING("%s(), No DMA channel assigned !\n", __FUNCTION__); | |
495 | else | |
496 | IRDA_DEBUG(2, "%s(), probing dma=%d\n", __FUNCTION__, info->dma); | |
497 | ||
498 | /* Read Enabled Status */ | |
499 | outb(0x30, cfg_base); | |
500 | reg = inb(cfg_base+1); | |
501 | info->enabled = (reg & 0x80) && (reg & 0x01); | |
502 | IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __FUNCTION__, info->enabled); | |
503 | ||
504 | /* Read Power Status */ | |
505 | outb(0x22, cfg_base); | |
506 | reg = inb(cfg_base+1); | |
507 | info->suspended = (reg & 0x20); | |
508 | IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __FUNCTION__, info->suspended); | |
509 | ||
510 | /* Exit configuration */ | |
511 | outb(0xbb, cfg_base); | |
512 | ||
513 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
518 | /* | |
519 | * Function ali_ircc_setup (info) | |
520 | * | |
521 | * Set FIR FIFO and DMA Threshold | |
522 | * Returns non-negative on success. | |
523 | * | |
524 | */ | |
525 | static int ali_ircc_setup(chipio_t *info) | |
526 | { | |
527 | unsigned char tmp; | |
528 | int version; | |
529 | int iobase = info->fir_base; | |
530 | ||
531 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
532 | ||
533 | /* Locking comments : | |
534 | * Most operations here need to be protected. We are called before | |
535 | * the device instance is created in ali_ircc_open(), therefore | |
536 | * nobody can bother us - Jean II */ | |
537 | ||
538 | /* Switch to FIR space */ | |
539 | SIR2FIR(iobase); | |
540 | ||
541 | /* Master Reset */ | |
542 | outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM | |
543 | ||
544 | /* Read FIR ID Version Register */ | |
545 | switch_bank(iobase, BANK3); | |
546 | version = inb(iobase+FIR_ID_VR); | |
547 | ||
548 | /* Should be 0x00 in the M1535/M1535D */ | |
549 | if(version != 0x00) | |
550 | { | |
551 | IRDA_ERROR("%s, Wrong chip version %02x\n", driver_name, version); | |
552 | return -1; | |
553 | } | |
554 | ||
555 | // IRDA_MESSAGE("%s, Found chip at base=0x%03x\n", driver_name, info->cfg_base); | |
556 | ||
557 | /* Set FIR FIFO Threshold Register */ | |
558 | switch_bank(iobase, BANK1); | |
559 | outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); | |
560 | ||
561 | /* Set FIR DMA Threshold Register */ | |
562 | outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); | |
563 | ||
564 | /* CRC enable */ | |
565 | switch_bank(iobase, BANK2); | |
566 | outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR); | |
567 | ||
568 | /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/ | |
569 | ||
570 | /* Switch to Bank 0 */ | |
571 | switch_bank(iobase, BANK0); | |
572 | ||
573 | tmp = inb(iobase+FIR_LCR_B); | |
574 | tmp &=~0x20; // disable SIP | |
575 | tmp |= 0x80; // these two steps make RX mode | |
576 | tmp &= 0xbf; | |
577 | outb(tmp, iobase+FIR_LCR_B); | |
578 | ||
579 | /* Disable Interrupt */ | |
580 | outb(0x00, iobase+FIR_IER); | |
581 | ||
582 | ||
583 | /* Switch to SIR space */ | |
584 | FIR2SIR(iobase); | |
585 | ||
586 | IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n", driver_name); | |
587 | ||
588 | /* Enable receive interrupts */ | |
589 | // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM | |
590 | // Turn on the interrupts in ali_ircc_net_open | |
591 | ||
592 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__); | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
597 | /* | |
598 | * Function ali_ircc_read_dongle_id (int index, info) | |
599 | * | |
600 | * Try to read dongle indentification. This procedure needs to be executed | |
601 | * once after power-on/reset. It also needs to be used whenever you suspect | |
602 | * that the user may have plugged/unplugged the IrDA Dongle. | |
603 | */ | |
604 | static int ali_ircc_read_dongle_id (int i, chipio_t *info) | |
605 | { | |
606 | int dongle_id, reg; | |
607 | int cfg_base = info->cfg_base; | |
608 | ||
609 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
610 | ||
611 | /* Enter Configuration */ | |
612 | outb(chips[i].entr1, cfg_base); | |
613 | outb(chips[i].entr2, cfg_base); | |
614 | ||
615 | /* Select Logical Device 5 Registers (UART2) */ | |
616 | outb(0x07, cfg_base); | |
617 | outb(0x05, cfg_base+1); | |
618 | ||
619 | /* Read Dongle ID */ | |
620 | outb(0xf0, cfg_base); | |
621 | reg = inb(cfg_base+1); | |
622 | dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01); | |
623 | IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __FUNCTION__, | |
624 | dongle_id, dongle_types[dongle_id]); | |
625 | ||
626 | /* Exit configuration */ | |
627 | outb(0xbb, cfg_base); | |
628 | ||
629 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__); | |
630 | ||
631 | return dongle_id; | |
632 | } | |
633 | ||
634 | /* | |
635 | * Function ali_ircc_interrupt (irq, dev_id, regs) | |
636 | * | |
637 | * An interrupt from the chip has arrived. Time to do some work | |
638 | * | |
639 | */ | |
640 | static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id, | |
641 | struct pt_regs *regs) | |
642 | { | |
643 | struct net_device *dev = (struct net_device *) dev_id; | |
644 | struct ali_ircc_cb *self; | |
645 | int ret; | |
646 | ||
647 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
648 | ||
649 | if (!dev) { | |
650 | IRDA_WARNING("%s: irq %d for unknown device.\n", driver_name, irq); | |
651 | return IRQ_NONE; | |
652 | } | |
653 | ||
654 | self = (struct ali_ircc_cb *) dev->priv; | |
655 | ||
656 | spin_lock(&self->lock); | |
657 | ||
658 | /* Dispatch interrupt handler for the current speed */ | |
659 | if (self->io.speed > 115200) | |
660 | ret = ali_ircc_fir_interrupt(self); | |
661 | else | |
662 | ret = ali_ircc_sir_interrupt(self); | |
663 | ||
664 | spin_unlock(&self->lock); | |
665 | ||
666 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__); | |
667 | return ret; | |
668 | } | |
669 | /* | |
670 | * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self) | |
671 | * | |
672 | * Handle MIR/FIR interrupt | |
673 | * | |
674 | */ | |
675 | static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self) | |
676 | { | |
677 | __u8 eir, OldMessageCount; | |
678 | int iobase, tmp; | |
679 | ||
680 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
681 | ||
682 | iobase = self->io.fir_base; | |
683 | ||
684 | switch_bank(iobase, BANK0); | |
685 | self->InterruptID = inb(iobase+FIR_IIR); | |
686 | self->BusStatus = inb(iobase+FIR_BSR); | |
687 | ||
688 | OldMessageCount = (self->LineStatus + 1) & 0x07; | |
689 | self->LineStatus = inb(iobase+FIR_LSR); | |
690 | //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM | |
691 | eir = self->InterruptID & self->ier; /* Mask out the interesting ones */ | |
692 | ||
693 | IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __FUNCTION__,self->InterruptID); | |
694 | IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __FUNCTION__,self->LineStatus); | |
695 | IRDA_DEBUG(1, "%s(), self->ier = %x\n", __FUNCTION__,self->ier); | |
696 | IRDA_DEBUG(1, "%s(), eir = %x\n", __FUNCTION__,eir); | |
697 | ||
698 | /* Disable interrupts */ | |
699 | SetCOMInterrupts(self, FALSE); | |
700 | ||
701 | /* Tx or Rx Interrupt */ | |
702 | ||
703 | if (eir & IIR_EOM) | |
704 | { | |
705 | if (self->io.direction == IO_XMIT) /* TX */ | |
706 | { | |
707 | IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __FUNCTION__); | |
708 | ||
709 | if(ali_ircc_dma_xmit_complete(self)) | |
710 | { | |
711 | if (irda_device_txqueue_empty(self->netdev)) | |
712 | { | |
713 | /* Prepare for receive */ | |
714 | ali_ircc_dma_receive(self); | |
715 | self->ier = IER_EOM; | |
716 | } | |
717 | } | |
718 | else | |
719 | { | |
720 | self->ier = IER_EOM; | |
721 | } | |
722 | ||
723 | } | |
724 | else /* RX */ | |
725 | { | |
726 | IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __FUNCTION__); | |
727 | ||
728 | if(OldMessageCount > ((self->LineStatus+1) & 0x07)) | |
729 | { | |
730 | self->rcvFramesOverflow = TRUE; | |
731 | IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******** \n", __FUNCTION__); | |
732 | } | |
733 | ||
734 | if (ali_ircc_dma_receive_complete(self)) | |
735 | { | |
736 | IRDA_DEBUG(1, "%s(), ******* receive complete ******** \n", __FUNCTION__); | |
737 | ||
738 | self->ier = IER_EOM; | |
739 | } | |
740 | else | |
741 | { | |
742 | IRDA_DEBUG(1, "%s(), ******* Not receive complete ******** \n", __FUNCTION__); | |
743 | ||
744 | self->ier = IER_EOM | IER_TIMER; | |
745 | } | |
746 | ||
747 | } | |
748 | } | |
749 | /* Timer Interrupt */ | |
750 | else if (eir & IIR_TIMER) | |
751 | { | |
752 | if(OldMessageCount > ((self->LineStatus+1) & 0x07)) | |
753 | { | |
754 | self->rcvFramesOverflow = TRUE; | |
755 | IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******* \n", __FUNCTION__); | |
756 | } | |
757 | /* Disable Timer */ | |
758 | switch_bank(iobase, BANK1); | |
759 | tmp = inb(iobase+FIR_CR); | |
760 | outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR); | |
761 | ||
762 | /* Check if this is a Tx timer interrupt */ | |
763 | if (self->io.direction == IO_XMIT) | |
764 | { | |
765 | ali_ircc_dma_xmit(self); | |
766 | ||
767 | /* Interrupt on EOM */ | |
768 | self->ier = IER_EOM; | |
769 | ||
770 | } | |
771 | else /* Rx */ | |
772 | { | |
773 | if(ali_ircc_dma_receive_complete(self)) | |
774 | { | |
775 | self->ier = IER_EOM; | |
776 | } | |
777 | else | |
778 | { | |
779 | self->ier = IER_EOM | IER_TIMER; | |
780 | } | |
781 | } | |
782 | } | |
783 | ||
784 | /* Restore Interrupt */ | |
785 | SetCOMInterrupts(self, TRUE); | |
786 | ||
787 | IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __FUNCTION__); | |
788 | return IRQ_RETVAL(eir); | |
789 | } | |
790 | ||
791 | /* | |
792 | * Function ali_ircc_sir_interrupt (irq, self, eir) | |
793 | * | |
794 | * Handle SIR interrupt | |
795 | * | |
796 | */ | |
797 | static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self) | |
798 | { | |
799 | int iobase; | |
800 | int iir, lsr; | |
801 | ||
802 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
803 | ||
804 | iobase = self->io.sir_base; | |
805 | ||
806 | iir = inb(iobase+UART_IIR) & UART_IIR_ID; | |
807 | if (iir) { | |
808 | /* Clear interrupt */ | |
809 | lsr = inb(iobase+UART_LSR); | |
810 | ||
811 | IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __FUNCTION__, | |
812 | iir, lsr, iobase); | |
813 | ||
814 | switch (iir) | |
815 | { | |
816 | case UART_IIR_RLSI: | |
817 | IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__); | |
818 | break; | |
819 | case UART_IIR_RDI: | |
820 | /* Receive interrupt */ | |
821 | ali_ircc_sir_receive(self); | |
822 | break; | |
823 | case UART_IIR_THRI: | |
824 | if (lsr & UART_LSR_THRE) | |
825 | { | |
826 | /* Transmitter ready for data */ | |
827 | ali_ircc_sir_write_wakeup(self); | |
828 | } | |
829 | break; | |
830 | default: | |
831 | IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __FUNCTION__, iir); | |
832 | break; | |
833 | } | |
834 | ||
835 | } | |
836 | ||
837 | ||
838 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__); | |
839 | ||
840 | return IRQ_RETVAL(iir); | |
841 | } | |
842 | ||
843 | ||
844 | /* | |
845 | * Function ali_ircc_sir_receive (self) | |
846 | * | |
847 | * Receive one frame from the infrared port | |
848 | * | |
849 | */ | |
850 | static void ali_ircc_sir_receive(struct ali_ircc_cb *self) | |
851 | { | |
852 | int boguscount = 0; | |
853 | int iobase; | |
854 | ||
855 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); | |
856 | IRDA_ASSERT(self != NULL, return;); | |
857 | ||
858 | iobase = self->io.sir_base; | |
859 | ||
860 | /* | |
861 | * Receive all characters in Rx FIFO, unwrap and unstuff them. | |
862 | * async_unwrap_char will deliver all found frames | |
863 | */ | |
864 | do { | |
865 | async_unwrap_char(self->netdev, &self->stats, &self->rx_buff, | |
866 | inb(iobase+UART_RX)); | |
867 | ||
868 | /* Make sure we don't stay here too long */ | |
869 | if (boguscount++ > 32) { | |
870 | IRDA_DEBUG(2,"%s(), breaking!\n", __FUNCTION__); | |
871 | break; | |
872 | } | |
873 | } while (inb(iobase+UART_LSR) & UART_LSR_DR); | |
874 | ||
875 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
876 | } | |
877 | ||
878 | /* | |
879 | * Function ali_ircc_sir_write_wakeup (tty) | |
880 | * | |
881 | * Called by the driver when there's room for more data. If we have | |
882 | * more packets to send, we send them here. | |
883 | * | |
884 | */ | |
885 | static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self) | |
886 | { | |
887 | int actual = 0; | |
888 | int iobase; | |
889 | ||
890 | IRDA_ASSERT(self != NULL, return;); | |
891 | ||
892 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
893 | ||
894 | iobase = self->io.sir_base; | |
895 | ||
896 | /* Finished with frame? */ | |
897 | if (self->tx_buff.len > 0) | |
898 | { | |
899 | /* Write data left in transmit buffer */ | |
900 | actual = ali_ircc_sir_write(iobase, self->io.fifo_size, | |
901 | self->tx_buff.data, self->tx_buff.len); | |
902 | self->tx_buff.data += actual; | |
903 | self->tx_buff.len -= actual; | |
904 | } | |
905 | else | |
906 | { | |
907 | if (self->new_speed) | |
908 | { | |
909 | /* We must wait until all data are gone */ | |
910 | while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT)) | |
911 | IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __FUNCTION__ ); | |
912 | ||
913 | IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __FUNCTION__ , self->new_speed); | |
914 | ali_ircc_change_speed(self, self->new_speed); | |
915 | self->new_speed = 0; | |
916 | ||
917 | // benjamin 2000/11/10 06:32PM | |
918 | if (self->io.speed > 115200) | |
919 | { | |
920 | IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT \n", __FUNCTION__ ); | |
921 | ||
922 | self->ier = IER_EOM; | |
923 | // SetCOMInterrupts(self, TRUE); | |
924 | return; | |
925 | } | |
926 | } | |
927 | else | |
928 | { | |
929 | netif_wake_queue(self->netdev); | |
930 | } | |
931 | ||
932 | self->stats.tx_packets++; | |
933 | ||
934 | /* Turn on receive interrupts */ | |
935 | outb(UART_IER_RDI, iobase+UART_IER); | |
936 | } | |
937 | ||
938 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
939 | } | |
940 | ||
941 | static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud) | |
942 | { | |
943 | struct net_device *dev = self->netdev; | |
944 | int iobase; | |
945 | ||
946 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
947 | ||
948 | IRDA_DEBUG(2, "%s(), setting speed = %d \n", __FUNCTION__ , baud); | |
949 | ||
950 | /* This function *must* be called with irq off and spin-lock. | |
951 | * - Jean II */ | |
952 | ||
953 | iobase = self->io.fir_base; | |
954 | ||
955 | SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM | |
956 | ||
957 | /* Go to MIR, FIR Speed */ | |
958 | if (baud > 115200) | |
959 | { | |
960 | ||
961 | ||
962 | ali_ircc_fir_change_speed(self, baud); | |
963 | ||
964 | /* Install FIR xmit handler*/ | |
965 | dev->hard_start_xmit = ali_ircc_fir_hard_xmit; | |
966 | ||
967 | /* Enable Interuupt */ | |
968 | self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM | |
969 | ||
970 | /* Be ready for incomming frames */ | |
971 | ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete | |
972 | } | |
973 | /* Go to SIR Speed */ | |
974 | else | |
975 | { | |
976 | ali_ircc_sir_change_speed(self, baud); | |
977 | ||
978 | /* Install SIR xmit handler*/ | |
979 | dev->hard_start_xmit = ali_ircc_sir_hard_xmit; | |
980 | } | |
981 | ||
982 | ||
983 | SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM | |
984 | ||
985 | netif_wake_queue(self->netdev); | |
986 | ||
987 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
988 | } | |
989 | ||
990 | static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud) | |
991 | { | |
992 | ||
993 | int iobase; | |
994 | struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv; | |
995 | struct net_device *dev; | |
996 | ||
997 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
998 | ||
999 | IRDA_ASSERT(self != NULL, return;); | |
1000 | ||
1001 | dev = self->netdev; | |
1002 | iobase = self->io.fir_base; | |
1003 | ||
1004 | IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __FUNCTION__ ,self->io.speed,baud); | |
1005 | ||
1006 | /* Come from SIR speed */ | |
1007 | if(self->io.speed <=115200) | |
1008 | { | |
1009 | SIR2FIR(iobase); | |
1010 | } | |
1011 | ||
1012 | /* Update accounting for new speed */ | |
1013 | self->io.speed = baud; | |
1014 | ||
1015 | // Set Dongle Speed mode | |
1016 | ali_ircc_change_dongle_speed(self, baud); | |
1017 | ||
1018 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1019 | } | |
1020 | ||
1021 | /* | |
1022 | * Function ali_sir_change_speed (self, speed) | |
1023 | * | |
1024 | * Set speed of IrDA port to specified baudrate | |
1025 | * | |
1026 | */ | |
1027 | static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed) | |
1028 | { | |
1029 | struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv; | |
1030 | unsigned long flags; | |
1031 | int iobase; | |
1032 | int fcr; /* FIFO control reg */ | |
1033 | int lcr; /* Line control reg */ | |
1034 | int divisor; | |
1035 | ||
1036 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
1037 | ||
1038 | IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __FUNCTION__ , speed); | |
1039 | ||
1040 | IRDA_ASSERT(self != NULL, return;); | |
1041 | ||
1042 | iobase = self->io.sir_base; | |
1043 | ||
1044 | /* Come from MIR or FIR speed */ | |
1045 | if(self->io.speed >115200) | |
1046 | { | |
1047 | // Set Dongle Speed mode first | |
1048 | ali_ircc_change_dongle_speed(self, speed); | |
1049 | ||
1050 | FIR2SIR(iobase); | |
1051 | } | |
1052 | ||
1053 | // Clear Line and Auxiluary status registers 2000/11/24 11:47AM | |
1054 | ||
1055 | inb(iobase+UART_LSR); | |
1056 | inb(iobase+UART_SCR); | |
1057 | ||
1058 | /* Update accounting for new speed */ | |
1059 | self->io.speed = speed; | |
1060 | ||
1061 | spin_lock_irqsave(&self->lock, flags); | |
1062 | ||
1063 | divisor = 115200/speed; | |
1064 | ||
1065 | fcr = UART_FCR_ENABLE_FIFO; | |
1066 | ||
1067 | /* | |
1068 | * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and | |
1069 | * almost 1,7 ms at 19200 bps. At speeds above that we can just forget | |
1070 | * about this timeout since it will always be fast enough. | |
1071 | */ | |
1072 | if (self->io.speed < 38400) | |
1073 | fcr |= UART_FCR_TRIGGER_1; | |
1074 | else | |
1075 | fcr |= UART_FCR_TRIGGER_14; | |
1076 | ||
1077 | /* IrDA ports use 8N1 */ | |
1078 | lcr = UART_LCR_WLEN8; | |
1079 | ||
1080 | outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */ | |
1081 | outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */ | |
1082 | outb(divisor >> 8, iobase+UART_DLM); | |
1083 | outb(lcr, iobase+UART_LCR); /* Set 8N1 */ | |
1084 | outb(fcr, iobase+UART_FCR); /* Enable FIFO's */ | |
1085 | ||
1086 | /* without this, the conection will be broken after come back from FIR speed, | |
1087 | but with this, the SIR connection is harder to established */ | |
1088 | outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR); | |
1089 | ||
1090 | spin_unlock_irqrestore(&self->lock, flags); | |
1091 | ||
1092 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1093 | } | |
1094 | ||
1095 | static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed) | |
1096 | { | |
1097 | ||
1098 | struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv; | |
1099 | int iobase,dongle_id; | |
1100 | int tmp = 0; | |
1101 | ||
1102 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
1103 | ||
1104 | iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */ | |
1105 | dongle_id = self->io.dongle_id; | |
1106 | ||
1107 | /* We are already locked, no need to do it again */ | |
1108 | ||
1109 | IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __FUNCTION__ , dongle_types[dongle_id], speed); | |
1110 | ||
1111 | switch_bank(iobase, BANK2); | |
1112 | tmp = inb(iobase+FIR_IRDA_CR); | |
1113 | ||
1114 | /* IBM type dongle */ | |
1115 | if(dongle_id == 0) | |
1116 | { | |
1117 | if(speed == 4000000) | |
1118 | { | |
1119 | // __ __ | |
1120 | // SD/MODE __| |__ __ | |
1121 | // __ __ | |
1122 | // IRTX __ __| |__ | |
1123 | // T1 T2 T3 T4 T5 | |
1124 | ||
1125 | tmp &= ~IRDA_CR_HDLC; // HDLC=0 | |
1126 | tmp |= IRDA_CR_CRC; // CRC=1 | |
1127 | ||
1128 | switch_bank(iobase, BANK2); | |
1129 | outb(tmp, iobase+FIR_IRDA_CR); | |
1130 | ||
1131 | // T1 -> SD/MODE:0 IRTX:0 | |
1132 | tmp &= ~0x09; | |
1133 | tmp |= 0x02; | |
1134 | outb(tmp, iobase+FIR_IRDA_CR); | |
1135 | udelay(2); | |
1136 | ||
1137 | // T2 -> SD/MODE:1 IRTX:0 | |
1138 | tmp &= ~0x01; | |
1139 | tmp |= 0x0a; | |
1140 | outb(tmp, iobase+FIR_IRDA_CR); | |
1141 | udelay(2); | |
1142 | ||
1143 | // T3 -> SD/MODE:1 IRTX:1 | |
1144 | tmp |= 0x0b; | |
1145 | outb(tmp, iobase+FIR_IRDA_CR); | |
1146 | udelay(2); | |
1147 | ||
1148 | // T4 -> SD/MODE:0 IRTX:1 | |
1149 | tmp &= ~0x08; | |
1150 | tmp |= 0x03; | |
1151 | outb(tmp, iobase+FIR_IRDA_CR); | |
1152 | udelay(2); | |
1153 | ||
1154 | // T5 -> SD/MODE:0 IRTX:0 | |
1155 | tmp &= ~0x09; | |
1156 | tmp |= 0x02; | |
1157 | outb(tmp, iobase+FIR_IRDA_CR); | |
1158 | udelay(2); | |
1159 | ||
1160 | // reset -> Normal TX output Signal | |
1161 | outb(tmp & ~0x02, iobase+FIR_IRDA_CR); | |
1162 | } | |
1163 | else /* speed <=1152000 */ | |
1164 | { | |
1165 | // __ | |
1166 | // SD/MODE __| |__ | |
1167 | // | |
1168 | // IRTX ________ | |
1169 | // T1 T2 T3 | |
1170 | ||
1171 | /* MIR 115200, 57600 */ | |
1172 | if (speed==1152000) | |
1173 | { | |
1174 | tmp |= 0xA0; //HDLC=1, 1.152Mbps=1 | |
1175 | } | |
1176 | else | |
1177 | { | |
1178 | tmp &=~0x80; //HDLC 0.576Mbps | |
1179 | tmp |= 0x20; //HDLC=1, | |
1180 | } | |
1181 | ||
1182 | tmp |= IRDA_CR_CRC; // CRC=1 | |
1183 | ||
1184 | switch_bank(iobase, BANK2); | |
1185 | outb(tmp, iobase+FIR_IRDA_CR); | |
1186 | ||
1187 | /* MIR 115200, 57600 */ | |
1188 | ||
1189 | //switch_bank(iobase, BANK2); | |
1190 | // T1 -> SD/MODE:0 IRTX:0 | |
1191 | tmp &= ~0x09; | |
1192 | tmp |= 0x02; | |
1193 | outb(tmp, iobase+FIR_IRDA_CR); | |
1194 | udelay(2); | |
1195 | ||
1196 | // T2 -> SD/MODE:1 IRTX:0 | |
1197 | tmp &= ~0x01; | |
1198 | tmp |= 0x0a; | |
1199 | outb(tmp, iobase+FIR_IRDA_CR); | |
1200 | ||
1201 | // T3 -> SD/MODE:0 IRTX:0 | |
1202 | tmp &= ~0x09; | |
1203 | tmp |= 0x02; | |
1204 | outb(tmp, iobase+FIR_IRDA_CR); | |
1205 | udelay(2); | |
1206 | ||
1207 | // reset -> Normal TX output Signal | |
1208 | outb(tmp & ~0x02, iobase+FIR_IRDA_CR); | |
1209 | } | |
1210 | } | |
1211 | else if (dongle_id == 1) /* HP HDSL-3600 */ | |
1212 | { | |
1213 | switch(speed) | |
1214 | { | |
1215 | case 4000000: | |
1216 | tmp &= ~IRDA_CR_HDLC; // HDLC=0 | |
1217 | break; | |
1218 | ||
1219 | case 1152000: | |
1220 | tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 | |
1221 | break; | |
1222 | ||
1223 | case 576000: | |
1224 | tmp &=~0x80; // HDLC 0.576Mbps | |
1225 | tmp |= 0x20; // HDLC=1, | |
1226 | break; | |
1227 | } | |
1228 | ||
1229 | tmp |= IRDA_CR_CRC; // CRC=1 | |
1230 | ||
1231 | switch_bank(iobase, BANK2); | |
1232 | outb(tmp, iobase+FIR_IRDA_CR); | |
1233 | } | |
1234 | else /* HP HDSL-1100 */ | |
1235 | { | |
1236 | if(speed <= 115200) /* SIR */ | |
1237 | { | |
1238 | ||
1239 | tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0 | |
1240 | ||
1241 | switch_bank(iobase, BANK2); | |
1242 | outb(tmp, iobase+FIR_IRDA_CR); | |
1243 | } | |
1244 | else /* MIR FIR */ | |
1245 | { | |
1246 | ||
1247 | switch(speed) | |
1248 | { | |
1249 | case 4000000: | |
1250 | tmp &= ~IRDA_CR_HDLC; // HDLC=0 | |
1251 | break; | |
1252 | ||
1253 | case 1152000: | |
1254 | tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 | |
1255 | break; | |
1256 | ||
1257 | case 576000: | |
1258 | tmp &=~0x80; // HDLC 0.576Mbps | |
1259 | tmp |= 0x20; // HDLC=1, | |
1260 | break; | |
1261 | } | |
1262 | ||
1263 | tmp |= IRDA_CR_CRC; // CRC=1 | |
1264 | tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1 | |
1265 | ||
1266 | switch_bank(iobase, BANK2); | |
1267 | outb(tmp, iobase+FIR_IRDA_CR); | |
1268 | } | |
1269 | } | |
1270 | ||
1271 | switch_bank(iobase, BANK0); | |
1272 | ||
1273 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1274 | } | |
1275 | ||
1276 | /* | |
1277 | * Function ali_ircc_sir_write (driver) | |
1278 | * | |
1279 | * Fill Tx FIFO with transmit data | |
1280 | * | |
1281 | */ | |
1282 | static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) | |
1283 | { | |
1284 | int actual = 0; | |
1285 | ||
1286 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
1287 | ||
1288 | /* Tx FIFO should be empty! */ | |
1289 | if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) { | |
1290 | IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __FUNCTION__ ); | |
1291 | return 0; | |
1292 | } | |
1293 | ||
1294 | /* Fill FIFO with current frame */ | |
1295 | while ((fifo_size-- > 0) && (actual < len)) { | |
1296 | /* Transmit next byte */ | |
1297 | outb(buf[actual], iobase+UART_TX); | |
1298 | ||
1299 | actual++; | |
1300 | } | |
1301 | ||
1302 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1303 | return actual; | |
1304 | } | |
1305 | ||
1306 | /* | |
1307 | * Function ali_ircc_net_open (dev) | |
1308 | * | |
1309 | * Start the device | |
1310 | * | |
1311 | */ | |
1312 | static int ali_ircc_net_open(struct net_device *dev) | |
1313 | { | |
1314 | struct ali_ircc_cb *self; | |
1315 | int iobase; | |
1316 | char hwname[32]; | |
1317 | ||
1318 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
1319 | ||
1320 | IRDA_ASSERT(dev != NULL, return -1;); | |
1321 | ||
1322 | self = (struct ali_ircc_cb *) dev->priv; | |
1323 | ||
1324 | IRDA_ASSERT(self != NULL, return 0;); | |
1325 | ||
1326 | iobase = self->io.fir_base; | |
1327 | ||
1328 | /* Request IRQ and install Interrupt Handler */ | |
1329 | if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev)) | |
1330 | { | |
1331 | IRDA_WARNING("%s, unable to allocate irq=%d\n", driver_name, | |
1332 | self->io.irq); | |
1333 | return -EAGAIN; | |
1334 | } | |
1335 | ||
1336 | /* | |
1337 | * Always allocate the DMA channel after the IRQ, and clean up on | |
1338 | * failure. | |
1339 | */ | |
1340 | if (request_dma(self->io.dma, dev->name)) { | |
1341 | IRDA_WARNING("%s, unable to allocate dma=%d\n", driver_name, | |
1342 | self->io.dma); | |
1343 | free_irq(self->io.irq, self); | |
1344 | return -EAGAIN; | |
1345 | } | |
1346 | ||
1347 | /* Turn on interrups */ | |
1348 | outb(UART_IER_RDI , iobase+UART_IER); | |
1349 | ||
1350 | /* Ready to play! */ | |
1351 | netif_start_queue(dev); //benjamin by irport | |
1352 | ||
1353 | /* Give self a hardware name */ | |
1354 | sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base); | |
1355 | ||
1356 | /* | |
1357 | * Open new IrLAP layer instance, now that everything should be | |
1358 | * initialized properly | |
1359 | */ | |
1360 | self->irlap = irlap_open(dev, &self->qos, hwname); | |
1361 | ||
1362 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1363 | ||
1364 | return 0; | |
1365 | } | |
1366 | ||
1367 | /* | |
1368 | * Function ali_ircc_net_close (dev) | |
1369 | * | |
1370 | * Stop the device | |
1371 | * | |
1372 | */ | |
1373 | static int ali_ircc_net_close(struct net_device *dev) | |
1374 | { | |
1375 | ||
1376 | struct ali_ircc_cb *self; | |
1377 | //int iobase; | |
1378 | ||
1379 | IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
1380 | ||
1381 | IRDA_ASSERT(dev != NULL, return -1;); | |
1382 | ||
1383 | self = (struct ali_ircc_cb *) dev->priv; | |
1384 | IRDA_ASSERT(self != NULL, return 0;); | |
1385 | ||
1386 | /* Stop device */ | |
1387 | netif_stop_queue(dev); | |
1388 | ||
1389 | /* Stop and remove instance of IrLAP */ | |
1390 | if (self->irlap) | |
1391 | irlap_close(self->irlap); | |
1392 | self->irlap = NULL; | |
1393 | ||
1394 | disable_dma(self->io.dma); | |
1395 | ||
1396 | /* Disable interrupts */ | |
1397 | SetCOMInterrupts(self, FALSE); | |
1398 | ||
1399 | free_irq(self->io.irq, dev); | |
1400 | free_dma(self->io.dma); | |
1401 | ||
1402 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1403 | ||
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | /* | |
1408 | * Function ali_ircc_fir_hard_xmit (skb, dev) | |
1409 | * | |
1410 | * Transmit the frame | |
1411 | * | |
1412 | */ | |
1413 | static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev) | |
1414 | { | |
1415 | struct ali_ircc_cb *self; | |
1416 | unsigned long flags; | |
1417 | int iobase; | |
1418 | __u32 speed; | |
1419 | int mtt, diff; | |
1420 | ||
1421 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); | |
1422 | ||
1423 | self = (struct ali_ircc_cb *) dev->priv; | |
1424 | iobase = self->io.fir_base; | |
1425 | ||
1426 | netif_stop_queue(dev); | |
1427 | ||
1428 | /* Make sure tests *& speed change are atomic */ | |
1429 | spin_lock_irqsave(&self->lock, flags); | |
1430 | ||
1431 | /* Note : you should make sure that speed changes are not going | |
1432 | * to corrupt any outgoing frame. Look at nsc-ircc for the gory | |
1433 | * details - Jean II */ | |
1434 | ||
1435 | /* Check if we need to change the speed */ | |
1436 | speed = irda_get_next_speed(skb); | |
1437 | if ((speed != self->io.speed) && (speed != -1)) { | |
1438 | /* Check for empty frame */ | |
1439 | if (!skb->len) { | |
1440 | ali_ircc_change_speed(self, speed); | |
1441 | dev->trans_start = jiffies; | |
1442 | spin_unlock_irqrestore(&self->lock, flags); | |
1443 | dev_kfree_skb(skb); | |
1444 | return 0; | |
1445 | } else | |
1446 | self->new_speed = speed; | |
1447 | } | |
1448 | ||
1449 | /* Register and copy this frame to DMA memory */ | |
1450 | self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail; | |
1451 | self->tx_fifo.queue[self->tx_fifo.free].len = skb->len; | |
1452 | self->tx_fifo.tail += skb->len; | |
1453 | ||
1454 | self->stats.tx_bytes += skb->len; | |
1455 | ||
1456 | memcpy(self->tx_fifo.queue[self->tx_fifo.free].start, skb->data, | |
1457 | skb->len); | |
1458 | ||
1459 | self->tx_fifo.len++; | |
1460 | self->tx_fifo.free++; | |
1461 | ||
1462 | /* Start transmit only if there is currently no transmit going on */ | |
1463 | if (self->tx_fifo.len == 1) | |
1464 | { | |
1465 | /* Check if we must wait the min turn time or not */ | |
1466 | mtt = irda_get_mtt(skb); | |
1467 | ||
1468 | if (mtt) | |
1469 | { | |
1470 | /* Check how much time we have used already */ | |
1471 | do_gettimeofday(&self->now); | |
1472 | ||
1473 | diff = self->now.tv_usec - self->stamp.tv_usec; | |
1474 | /* self->stamp is set from ali_ircc_dma_receive_complete() */ | |
1475 | ||
1476 | IRDA_DEBUG(1, "%s(), ******* diff = %d ******* \n", __FUNCTION__ , diff); | |
1477 | ||
1478 | if (diff < 0) | |
1479 | diff += 1000000; | |
1480 | ||
1481 | /* Check if the mtt is larger than the time we have | |
1482 | * already used by all the protocol processing | |
1483 | */ | |
1484 | if (mtt > diff) | |
1485 | { | |
1486 | mtt -= diff; | |
1487 | ||
1488 | /* | |
1489 | * Use timer if delay larger than 1000 us, and | |
1490 | * use udelay for smaller values which should | |
1491 | * be acceptable | |
1492 | */ | |
1493 | if (mtt > 500) | |
1494 | { | |
1495 | /* Adjust for timer resolution */ | |
1496 | mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */ | |
1497 | ||
1498 | IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __FUNCTION__ , mtt); | |
1499 | ||
1500 | /* Setup timer */ | |
1501 | if (mtt == 1) /* 500 us */ | |
1502 | { | |
1503 | switch_bank(iobase, BANK1); | |
1504 | outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); | |
1505 | } | |
1506 | else if (mtt == 2) /* 1 ms */ | |
1507 | { | |
1508 | switch_bank(iobase, BANK1); | |
1509 | outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR); | |
1510 | } | |
1511 | else /* > 2ms -> 4ms */ | |
1512 | { | |
1513 | switch_bank(iobase, BANK1); | |
1514 | outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR); | |
1515 | } | |
1516 | ||
1517 | ||
1518 | /* Start timer */ | |
1519 | outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); | |
1520 | self->io.direction = IO_XMIT; | |
1521 | ||
1522 | /* Enable timer interrupt */ | |
1523 | self->ier = IER_TIMER; | |
1524 | SetCOMInterrupts(self, TRUE); | |
1525 | ||
1526 | /* Timer will take care of the rest */ | |
1527 | goto out; | |
1528 | } | |
1529 | else | |
1530 | udelay(mtt); | |
1531 | } // if (if (mtt > diff) | |
1532 | }// if (mtt) | |
1533 | ||
1534 | /* Enable EOM interrupt */ | |
1535 | self->ier = IER_EOM; | |
1536 | SetCOMInterrupts(self, TRUE); | |
1537 | ||
1538 | /* Transmit frame */ | |
1539 | ali_ircc_dma_xmit(self); | |
1540 | } // if (self->tx_fifo.len == 1) | |
1541 | ||
1542 | out: | |
1543 | ||
1544 | /* Not busy transmitting anymore if window is not full */ | |
1545 | if (self->tx_fifo.free < MAX_TX_WINDOW) | |
1546 | netif_wake_queue(self->netdev); | |
1547 | ||
1548 | /* Restore bank register */ | |
1549 | switch_bank(iobase, BANK0); | |
1550 | ||
1551 | dev->trans_start = jiffies; | |
1552 | spin_unlock_irqrestore(&self->lock, flags); | |
1553 | dev_kfree_skb(skb); | |
1554 | ||
1555 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | ||
1560 | static void ali_ircc_dma_xmit(struct ali_ircc_cb *self) | |
1561 | { | |
1562 | int iobase, tmp; | |
1563 | unsigned char FIFO_OPTI, Hi, Lo; | |
1564 | ||
1565 | ||
1566 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); | |
1567 | ||
1568 | iobase = self->io.fir_base; | |
1569 | ||
1570 | /* FIFO threshold , this method comes from NDIS5 code */ | |
1571 | ||
1572 | if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold) | |
1573 | FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1; | |
1574 | else | |
1575 | FIFO_OPTI = TX_FIFO_Threshold; | |
1576 | ||
1577 | /* Disable DMA */ | |
1578 | switch_bank(iobase, BANK1); | |
1579 | outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); | |
1580 | ||
1581 | self->io.direction = IO_XMIT; | |
1582 | ||
1583 | irda_setup_dma(self->io.dma, | |
1584 | ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - | |
1585 | self->tx_buff.head) + self->tx_buff_dma, | |
1586 | self->tx_fifo.queue[self->tx_fifo.ptr].len, | |
1587 | DMA_TX_MODE); | |
1588 | ||
1589 | /* Reset Tx FIFO */ | |
1590 | switch_bank(iobase, BANK0); | |
1591 | outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); | |
1592 | ||
1593 | /* Set Tx FIFO threshold */ | |
1594 | if (self->fifo_opti_buf!=FIFO_OPTI) | |
1595 | { | |
1596 | switch_bank(iobase, BANK1); | |
1597 | outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ; | |
1598 | self->fifo_opti_buf=FIFO_OPTI; | |
1599 | } | |
1600 | ||
1601 | /* Set Tx DMA threshold */ | |
1602 | switch_bank(iobase, BANK1); | |
1603 | outb(TX_DMA_Threshold, iobase+FIR_DMA_TR); | |
1604 | ||
1605 | /* Set max Tx frame size */ | |
1606 | Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f; | |
1607 | Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff; | |
1608 | switch_bank(iobase, BANK2); | |
1609 | outb(Hi, iobase+FIR_TX_DSR_HI); | |
1610 | outb(Lo, iobase+FIR_TX_DSR_LO); | |
1611 | ||
1612 | /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */ | |
1613 | switch_bank(iobase, BANK0); | |
1614 | tmp = inb(iobase+FIR_LCR_B); | |
1615 | tmp &= ~0x20; // Disable SIP | |
1616 | outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B); | |
1617 | IRDA_DEBUG(1, "%s(), ******* Change to TX mode: FIR_LCR_B = 0x%x ******* \n", __FUNCTION__ , inb(iobase+FIR_LCR_B)); | |
1618 | ||
1619 | outb(0, iobase+FIR_LSR); | |
1620 | ||
1621 | /* Enable DMA and Burst Mode */ | |
1622 | switch_bank(iobase, BANK1); | |
1623 | outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); | |
1624 | ||
1625 | switch_bank(iobase, BANK0); | |
1626 | ||
1627 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1628 | } | |
1629 | ||
1630 | static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self) | |
1631 | { | |
1632 | int iobase; | |
1633 | int ret = TRUE; | |
1634 | ||
1635 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); | |
1636 | ||
1637 | iobase = self->io.fir_base; | |
1638 | ||
1639 | /* Disable DMA */ | |
1640 | switch_bank(iobase, BANK1); | |
1641 | outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); | |
1642 | ||
1643 | /* Check for underrun! */ | |
1644 | switch_bank(iobase, BANK0); | |
1645 | if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT) | |
1646 | ||
1647 | { | |
1648 | IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __FUNCTION__); | |
1649 | self->stats.tx_errors++; | |
1650 | self->stats.tx_fifo_errors++; | |
1651 | } | |
1652 | else | |
1653 | { | |
1654 | self->stats.tx_packets++; | |
1655 | } | |
1656 | ||
1657 | /* Check if we need to change the speed */ | |
1658 | if (self->new_speed) | |
1659 | { | |
1660 | ali_ircc_change_speed(self, self->new_speed); | |
1661 | self->new_speed = 0; | |
1662 | } | |
1663 | ||
1664 | /* Finished with this frame, so prepare for next */ | |
1665 | self->tx_fifo.ptr++; | |
1666 | self->tx_fifo.len--; | |
1667 | ||
1668 | /* Any frames to be sent back-to-back? */ | |
1669 | if (self->tx_fifo.len) | |
1670 | { | |
1671 | ali_ircc_dma_xmit(self); | |
1672 | ||
1673 | /* Not finished yet! */ | |
1674 | ret = FALSE; | |
1675 | } | |
1676 | else | |
1677 | { /* Reset Tx FIFO info */ | |
1678 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; | |
1679 | self->tx_fifo.tail = self->tx_buff.head; | |
1680 | } | |
1681 | ||
1682 | /* Make sure we have room for more frames */ | |
1683 | if (self->tx_fifo.free < MAX_TX_WINDOW) { | |
1684 | /* Not busy transmitting anymore */ | |
1685 | /* Tell the network layer, that we can accept more frames */ | |
1686 | netif_wake_queue(self->netdev); | |
1687 | } | |
1688 | ||
1689 | switch_bank(iobase, BANK0); | |
1690 | ||
1691 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1692 | return ret; | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | * Function ali_ircc_dma_receive (self) | |
1697 | * | |
1698 | * Get ready for receiving a frame. The device will initiate a DMA | |
1699 | * if it starts to receive a frame. | |
1700 | * | |
1701 | */ | |
1702 | static int ali_ircc_dma_receive(struct ali_ircc_cb *self) | |
1703 | { | |
1704 | int iobase, tmp; | |
1705 | ||
1706 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); | |
1707 | ||
1708 | iobase = self->io.fir_base; | |
1709 | ||
1710 | /* Reset Tx FIFO info */ | |
1711 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; | |
1712 | self->tx_fifo.tail = self->tx_buff.head; | |
1713 | ||
1714 | /* Disable DMA */ | |
1715 | switch_bank(iobase, BANK1); | |
1716 | outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); | |
1717 | ||
1718 | /* Reset Message Count */ | |
1719 | switch_bank(iobase, BANK0); | |
1720 | outb(0x07, iobase+FIR_LSR); | |
1721 | ||
1722 | self->rcvFramesOverflow = FALSE; | |
1723 | ||
1724 | self->LineStatus = inb(iobase+FIR_LSR) ; | |
1725 | ||
1726 | /* Reset Rx FIFO info */ | |
1727 | self->io.direction = IO_RECV; | |
1728 | self->rx_buff.data = self->rx_buff.head; | |
1729 | ||
1730 | /* Reset Rx FIFO */ | |
1731 | // switch_bank(iobase, BANK0); | |
1732 | outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); | |
1733 | ||
1734 | self->st_fifo.len = self->st_fifo.pending_bytes = 0; | |
1735 | self->st_fifo.tail = self->st_fifo.head = 0; | |
1736 | ||
1737 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, | |
1738 | DMA_RX_MODE); | |
1739 | ||
1740 | /* Set Receive Mode,Brick Wall */ | |
1741 | //switch_bank(iobase, BANK0); | |
1742 | tmp = inb(iobase+FIR_LCR_B); | |
1743 | outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM | |
1744 | IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x *** \n", __FUNCTION__ , inb(iobase+FIR_LCR_B)); | |
1745 | ||
1746 | /* Set Rx Threshold */ | |
1747 | switch_bank(iobase, BANK1); | |
1748 | outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); | |
1749 | outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); | |
1750 | ||
1751 | /* Enable DMA and Burst Mode */ | |
1752 | // switch_bank(iobase, BANK1); | |
1753 | outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); | |
1754 | ||
1755 | switch_bank(iobase, BANK0); | |
1756 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1757 | return 0; | |
1758 | } | |
1759 | ||
1760 | static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self) | |
1761 | { | |
1762 | struct st_fifo *st_fifo; | |
1763 | struct sk_buff *skb; | |
1764 | __u8 status, MessageCount; | |
1765 | int len, i, iobase, val; | |
1766 | ||
1767 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); | |
1768 | ||
1769 | st_fifo = &self->st_fifo; | |
1770 | iobase = self->io.fir_base; | |
1771 | ||
1772 | switch_bank(iobase, BANK0); | |
1773 | MessageCount = inb(iobase+ FIR_LSR)&0x07; | |
1774 | ||
1775 | if (MessageCount > 0) | |
1776 | IRDA_DEBUG(0, "%s(), Messsage count = %d,\n", __FUNCTION__ , MessageCount); | |
1777 | ||
1778 | for (i=0; i<=MessageCount; i++) | |
1779 | { | |
1780 | /* Bank 0 */ | |
1781 | switch_bank(iobase, BANK0); | |
1782 | status = inb(iobase+FIR_LSR); | |
1783 | ||
1784 | switch_bank(iobase, BANK2); | |
1785 | len = inb(iobase+FIR_RX_DSR_HI) & 0x0f; | |
1786 | len = len << 8; | |
1787 | len |= inb(iobase+FIR_RX_DSR_LO); | |
1788 | ||
1789 | IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __FUNCTION__ , len); | |
1790 | IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __FUNCTION__ , status); | |
1791 | ||
1792 | if (st_fifo->tail >= MAX_RX_WINDOW) { | |
1793 | IRDA_DEBUG(0, "%s(), window is full!\n", __FUNCTION__ ); | |
1794 | continue; | |
1795 | } | |
1796 | ||
1797 | st_fifo->entries[st_fifo->tail].status = status; | |
1798 | st_fifo->entries[st_fifo->tail].len = len; | |
1799 | st_fifo->pending_bytes += len; | |
1800 | st_fifo->tail++; | |
1801 | st_fifo->len++; | |
1802 | } | |
1803 | ||
1804 | for (i=0; i<=MessageCount; i++) | |
1805 | { | |
1806 | /* Get first entry */ | |
1807 | status = st_fifo->entries[st_fifo->head].status; | |
1808 | len = st_fifo->entries[st_fifo->head].len; | |
1809 | st_fifo->pending_bytes -= len; | |
1810 | st_fifo->head++; | |
1811 | st_fifo->len--; | |
1812 | ||
1813 | /* Check for errors */ | |
1814 | if ((status & 0xd8) || self->rcvFramesOverflow || (len==0)) | |
1815 | { | |
1816 | IRDA_DEBUG(0,"%s(), ************* RX Errors ************ \n", __FUNCTION__ ); | |
1817 | ||
1818 | /* Skip frame */ | |
1819 | self->stats.rx_errors++; | |
1820 | ||
1821 | self->rx_buff.data += len; | |
1822 | ||
1823 | if (status & LSR_FIFO_UR) | |
1824 | { | |
1825 | self->stats.rx_frame_errors++; | |
1826 | IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************ \n", __FUNCTION__ ); | |
1827 | } | |
1828 | if (status & LSR_FRAME_ERROR) | |
1829 | { | |
1830 | self->stats.rx_frame_errors++; | |
1831 | IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************ \n", __FUNCTION__ ); | |
1832 | } | |
1833 | ||
1834 | if (status & LSR_CRC_ERROR) | |
1835 | { | |
1836 | self->stats.rx_crc_errors++; | |
1837 | IRDA_DEBUG(0,"%s(), ************* CRC Errors ************ \n", __FUNCTION__ ); | |
1838 | } | |
1839 | ||
1840 | if(self->rcvFramesOverflow) | |
1841 | { | |
1842 | self->stats.rx_frame_errors++; | |
1843 | IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************ \n", __FUNCTION__ ); | |
1844 | } | |
1845 | if(len == 0) | |
1846 | { | |
1847 | self->stats.rx_frame_errors++; | |
1848 | IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 ********* \n", __FUNCTION__ ); | |
1849 | } | |
1850 | } | |
1851 | else | |
1852 | { | |
1853 | ||
1854 | if (st_fifo->pending_bytes < 32) | |
1855 | { | |
1856 | switch_bank(iobase, BANK0); | |
1857 | val = inb(iobase+FIR_BSR); | |
1858 | if ((val& BSR_FIFO_NOT_EMPTY)== 0x80) | |
1859 | { | |
1860 | IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************ \n", __FUNCTION__ ); | |
1861 | ||
1862 | /* Put this entry back in fifo */ | |
1863 | st_fifo->head--; | |
1864 | st_fifo->len++; | |
1865 | st_fifo->pending_bytes += len; | |
1866 | st_fifo->entries[st_fifo->head].status = status; | |
1867 | st_fifo->entries[st_fifo->head].len = len; | |
1868 | ||
1869 | /* | |
1870 | * DMA not finished yet, so try again | |
1871 | * later, set timer value, resolution | |
1872 | * 500 us | |
1873 | */ | |
1874 | ||
1875 | switch_bank(iobase, BANK1); | |
1876 | outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM | |
1877 | ||
1878 | /* Enable Timer */ | |
1879 | outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); | |
1880 | ||
1881 | return FALSE; /* I'll be back! */ | |
1882 | } | |
1883 | } | |
1884 | ||
1885 | /* | |
1886 | * Remember the time we received this frame, so we can | |
1887 | * reduce the min turn time a bit since we will know | |
1888 | * how much time we have used for protocol processing | |
1889 | */ | |
1890 | do_gettimeofday(&self->stamp); | |
1891 | ||
1892 | skb = dev_alloc_skb(len+1); | |
1893 | if (skb == NULL) | |
1894 | { | |
1895 | IRDA_WARNING("%s(), memory squeeze, " | |
1896 | "dropping frame.\n", | |
1897 | __FUNCTION__); | |
1898 | self->stats.rx_dropped++; | |
1899 | ||
1900 | return FALSE; | |
1901 | } | |
1902 | ||
1903 | /* Make sure IP header gets aligned */ | |
1904 | skb_reserve(skb, 1); | |
1905 | ||
1906 | /* Copy frame without CRC, CRC is removed by hardware*/ | |
1907 | skb_put(skb, len); | |
1908 | memcpy(skb->data, self->rx_buff.data, len); | |
1909 | ||
1910 | /* Move to next frame */ | |
1911 | self->rx_buff.data += len; | |
1912 | self->stats.rx_bytes += len; | |
1913 | self->stats.rx_packets++; | |
1914 | ||
1915 | skb->dev = self->netdev; | |
1916 | skb->mac.raw = skb->data; | |
1917 | skb->protocol = htons(ETH_P_IRDA); | |
1918 | netif_rx(skb); | |
1919 | self->netdev->last_rx = jiffies; | |
1920 | } | |
1921 | } | |
1922 | ||
1923 | switch_bank(iobase, BANK0); | |
1924 | ||
1925 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1926 | return TRUE; | |
1927 | } | |
1928 | ||
1929 | ||
1930 | ||
1931 | /* | |
1932 | * Function ali_ircc_sir_hard_xmit (skb, dev) | |
1933 | * | |
1934 | * Transmit the frame! | |
1935 | * | |
1936 | */ | |
1937 | static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev) | |
1938 | { | |
1939 | struct ali_ircc_cb *self; | |
1940 | unsigned long flags; | |
1941 | int iobase; | |
1942 | __u32 speed; | |
1943 | ||
1944 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
1945 | ||
1946 | IRDA_ASSERT(dev != NULL, return 0;); | |
1947 | ||
1948 | self = (struct ali_ircc_cb *) dev->priv; | |
1949 | IRDA_ASSERT(self != NULL, return 0;); | |
1950 | ||
1951 | iobase = self->io.sir_base; | |
1952 | ||
1953 | netif_stop_queue(dev); | |
1954 | ||
1955 | /* Make sure tests *& speed change are atomic */ | |
1956 | spin_lock_irqsave(&self->lock, flags); | |
1957 | ||
1958 | /* Note : you should make sure that speed changes are not going | |
1959 | * to corrupt any outgoing frame. Look at nsc-ircc for the gory | |
1960 | * details - Jean II */ | |
1961 | ||
1962 | /* Check if we need to change the speed */ | |
1963 | speed = irda_get_next_speed(skb); | |
1964 | if ((speed != self->io.speed) && (speed != -1)) { | |
1965 | /* Check for empty frame */ | |
1966 | if (!skb->len) { | |
1967 | ali_ircc_change_speed(self, speed); | |
1968 | dev->trans_start = jiffies; | |
1969 | spin_unlock_irqrestore(&self->lock, flags); | |
1970 | dev_kfree_skb(skb); | |
1971 | return 0; | |
1972 | } else | |
1973 | self->new_speed = speed; | |
1974 | } | |
1975 | ||
1976 | /* Init tx buffer */ | |
1977 | self->tx_buff.data = self->tx_buff.head; | |
1978 | ||
1979 | /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ | |
1980 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, | |
1981 | self->tx_buff.truesize); | |
1982 | ||
1983 | self->stats.tx_bytes += self->tx_buff.len; | |
1984 | ||
1985 | /* Turn on transmit finished interrupt. Will fire immediately! */ | |
1986 | outb(UART_IER_THRI, iobase+UART_IER); | |
1987 | ||
1988 | dev->trans_start = jiffies; | |
1989 | spin_unlock_irqrestore(&self->lock, flags); | |
1990 | ||
1991 | dev_kfree_skb(skb); | |
1992 | ||
1993 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
1994 | ||
1995 | return 0; | |
1996 | } | |
1997 | ||
1998 | ||
1999 | /* | |
2000 | * Function ali_ircc_net_ioctl (dev, rq, cmd) | |
2001 | * | |
2002 | * Process IOCTL commands for this device | |
2003 | * | |
2004 | */ | |
2005 | static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
2006 | { | |
2007 | struct if_irda_req *irq = (struct if_irda_req *) rq; | |
2008 | struct ali_ircc_cb *self; | |
2009 | unsigned long flags; | |
2010 | int ret = 0; | |
2011 | ||
2012 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
2013 | ||
2014 | IRDA_ASSERT(dev != NULL, return -1;); | |
2015 | ||
2016 | self = dev->priv; | |
2017 | ||
2018 | IRDA_ASSERT(self != NULL, return -1;); | |
2019 | ||
2020 | IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__ , dev->name, cmd); | |
2021 | ||
2022 | switch (cmd) { | |
2023 | case SIOCSBANDWIDTH: /* Set bandwidth */ | |
2024 | IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __FUNCTION__ ); | |
2025 | /* | |
2026 | * This function will also be used by IrLAP to change the | |
2027 | * speed, so we still must allow for speed change within | |
2028 | * interrupt context. | |
2029 | */ | |
2030 | if (!in_interrupt() && !capable(CAP_NET_ADMIN)) | |
2031 | return -EPERM; | |
2032 | ||
2033 | spin_lock_irqsave(&self->lock, flags); | |
2034 | ali_ircc_change_speed(self, irq->ifr_baudrate); | |
2035 | spin_unlock_irqrestore(&self->lock, flags); | |
2036 | break; | |
2037 | case SIOCSMEDIABUSY: /* Set media busy */ | |
2038 | IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __FUNCTION__ ); | |
2039 | if (!capable(CAP_NET_ADMIN)) | |
2040 | return -EPERM; | |
2041 | irda_device_set_media_busy(self->netdev, TRUE); | |
2042 | break; | |
2043 | case SIOCGRECEIVING: /* Check if we are receiving right now */ | |
2044 | IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __FUNCTION__ ); | |
2045 | /* This is protected */ | |
2046 | irq->ifr_receiving = ali_ircc_is_receiving(self); | |
2047 | break; | |
2048 | default: | |
2049 | ret = -EOPNOTSUPP; | |
2050 | } | |
2051 | ||
2052 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
2053 | ||
2054 | return ret; | |
2055 | } | |
2056 | ||
2057 | /* | |
2058 | * Function ali_ircc_is_receiving (self) | |
2059 | * | |
2060 | * Return TRUE is we are currently receiving a frame | |
2061 | * | |
2062 | */ | |
2063 | static int ali_ircc_is_receiving(struct ali_ircc_cb *self) | |
2064 | { | |
2065 | unsigned long flags; | |
2066 | int status = FALSE; | |
2067 | int iobase; | |
2068 | ||
2069 | IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); | |
2070 | ||
2071 | IRDA_ASSERT(self != NULL, return FALSE;); | |
2072 | ||
2073 | spin_lock_irqsave(&self->lock, flags); | |
2074 | ||
2075 | if (self->io.speed > 115200) | |
2076 | { | |
2077 | iobase = self->io.fir_base; | |
2078 | ||
2079 | switch_bank(iobase, BANK1); | |
2080 | if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0) | |
2081 | { | |
2082 | /* We are receiving something */ | |
2083 | IRDA_DEBUG(1, "%s(), We are receiving something\n", __FUNCTION__ ); | |
2084 | status = TRUE; | |
2085 | } | |
2086 | switch_bank(iobase, BANK0); | |
2087 | } | |
2088 | else | |
2089 | { | |
2090 | status = (self->rx_buff.state != OUTSIDE_FRAME); | |
2091 | } | |
2092 | ||
2093 | spin_unlock_irqrestore(&self->lock, flags); | |
2094 | ||
2095 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
2096 | ||
2097 | return status; | |
2098 | } | |
2099 | ||
2100 | static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev) | |
2101 | { | |
2102 | struct ali_ircc_cb *self = (struct ali_ircc_cb *) dev->priv; | |
2103 | ||
2104 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
2105 | ||
2106 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
2107 | ||
2108 | return &self->stats; | |
2109 | } | |
2110 | ||
2111 | static void ali_ircc_suspend(struct ali_ircc_cb *self) | |
2112 | { | |
2113 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
2114 | ||
2115 | IRDA_MESSAGE("%s, Suspending\n", driver_name); | |
2116 | ||
2117 | if (self->io.suspended) | |
2118 | return; | |
2119 | ||
2120 | ali_ircc_net_close(self->netdev); | |
2121 | ||
2122 | self->io.suspended = 1; | |
2123 | ||
2124 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
2125 | } | |
2126 | ||
2127 | static void ali_ircc_wakeup(struct ali_ircc_cb *self) | |
2128 | { | |
2129 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
2130 | ||
2131 | if (!self->io.suspended) | |
2132 | return; | |
2133 | ||
2134 | ali_ircc_net_open(self->netdev); | |
2135 | ||
2136 | IRDA_MESSAGE("%s, Waking up\n", driver_name); | |
2137 | ||
2138 | self->io.suspended = 0; | |
2139 | ||
2140 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
2141 | } | |
2142 | ||
2143 | static int ali_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data) | |
2144 | { | |
2145 | struct ali_ircc_cb *self = (struct ali_ircc_cb*) dev->data; | |
2146 | ||
2147 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
2148 | ||
2149 | if (self) { | |
2150 | switch (rqst) { | |
2151 | case PM_SUSPEND: | |
2152 | ali_ircc_suspend(self); | |
2153 | break; | |
2154 | case PM_RESUME: | |
2155 | ali_ircc_wakeup(self); | |
2156 | break; | |
2157 | } | |
2158 | } | |
2159 | ||
2160 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
2161 | ||
2162 | return 0; | |
2163 | } | |
2164 | ||
2165 | ||
2166 | /* ALi Chip Function */ | |
2167 | ||
2168 | static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable) | |
2169 | { | |
2170 | ||
2171 | unsigned char newMask; | |
2172 | ||
2173 | int iobase = self->io.fir_base; /* or sir_base */ | |
2174 | ||
2175 | IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __FUNCTION__ , enable); | |
2176 | ||
2177 | /* Enable the interrupt which we wish to */ | |
2178 | if (enable){ | |
2179 | if (self->io.direction == IO_XMIT) | |
2180 | { | |
2181 | if (self->io.speed > 115200) /* FIR, MIR */ | |
2182 | { | |
2183 | newMask = self->ier; | |
2184 | } | |
2185 | else /* SIR */ | |
2186 | { | |
2187 | newMask = UART_IER_THRI | UART_IER_RDI; | |
2188 | } | |
2189 | } | |
2190 | else { | |
2191 | if (self->io.speed > 115200) /* FIR, MIR */ | |
2192 | { | |
2193 | newMask = self->ier; | |
2194 | } | |
2195 | else /* SIR */ | |
2196 | { | |
2197 | newMask = UART_IER_RDI; | |
2198 | } | |
2199 | } | |
2200 | } | |
2201 | else /* Disable all the interrupts */ | |
2202 | { | |
2203 | newMask = 0x00; | |
2204 | ||
2205 | } | |
2206 | ||
2207 | //SIR and FIR has different registers | |
2208 | if (self->io.speed > 115200) | |
2209 | { | |
2210 | switch_bank(iobase, BANK0); | |
2211 | outb(newMask, iobase+FIR_IER); | |
2212 | } | |
2213 | else | |
2214 | outb(newMask, iobase+UART_IER); | |
2215 | ||
2216 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
2217 | } | |
2218 | ||
2219 | static void SIR2FIR(int iobase) | |
2220 | { | |
2221 | //unsigned char tmp; | |
2222 | ||
2223 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
2224 | ||
2225 | /* Already protected (change_speed() or setup()), no need to lock. | |
2226 | * Jean II */ | |
2227 | ||
2228 | outb(0x28, iobase+UART_MCR); | |
2229 | outb(0x68, iobase+UART_MCR); | |
2230 | outb(0x88, iobase+UART_MCR); | |
2231 | ||
2232 | outb(0x60, iobase+FIR_MCR); /* Master Reset */ | |
2233 | outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */ | |
2234 | ||
2235 | //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */ | |
2236 | //tmp |= 0x20; | |
2237 | //outb(tmp, iobase+FIR_LCR_B); | |
2238 | ||
2239 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
2240 | } | |
2241 | ||
2242 | static void FIR2SIR(int iobase) | |
2243 | { | |
2244 | unsigned char val; | |
2245 | ||
2246 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); | |
2247 | ||
2248 | /* Already protected (change_speed() or setup()), no need to lock. | |
2249 | * Jean II */ | |
2250 | ||
2251 | outb(0x20, iobase+FIR_MCR); /* IRQ to low */ | |
2252 | outb(0x00, iobase+UART_IER); | |
2253 | ||
2254 | outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */ | |
2255 | outb(0x00, iobase+UART_FCR); | |
2256 | outb(0x07, iobase+UART_FCR); | |
2257 | ||
2258 | val = inb(iobase+UART_RX); | |
2259 | val = inb(iobase+UART_LSR); | |
2260 | val = inb(iobase+UART_MSR); | |
2261 | ||
2262 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); | |
2263 | } | |
2264 | ||
2265 | MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>"); | |
2266 | MODULE_DESCRIPTION("ALi FIR Controller Driver"); | |
2267 | MODULE_LICENSE("GPL"); | |
2268 | ||
2269 | ||
2270 | module_param_array(io, int, NULL, 0); | |
2271 | MODULE_PARM_DESC(io, "Base I/O addresses"); | |
2272 | module_param_array(irq, int, NULL, 0); | |
2273 | MODULE_PARM_DESC(irq, "IRQ lines"); | |
2274 | module_param_array(dma, int, NULL, 0); | |
2275 | MODULE_PARM_DESC(dma, "DMA channels"); | |
2276 | ||
2277 | module_init(ali_ircc_init); | |
2278 | module_exit(ali_ircc_cleanup); |