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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> | |
5a0e3ad6 | 25 | #include <linux/gfp.h> |
1da177e4 LT |
26 | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/types.h> | |
29 | #include <linux/skbuff.h> | |
30 | #include <linux/netdevice.h> | |
31 | #include <linux/ioport.h> | |
32 | #include <linux/delay.h> | |
1da177e4 | 33 | #include <linux/init.h> |
a6b7a407 | 34 | #include <linux/interrupt.h> |
1da177e4 LT |
35 | #include <linux/rtnetlink.h> |
36 | #include <linux/serial_reg.h> | |
37 | #include <linux/dma-mapping.h> | |
898b1d16 | 38 | #include <linux/platform_device.h> |
1da177e4 LT |
39 | |
40 | #include <asm/io.h> | |
41 | #include <asm/dma.h> | |
42 | #include <asm/byteorder.h> | |
43 | ||
1da177e4 LT |
44 | #include <net/irda/wrapper.h> |
45 | #include <net/irda/irda.h> | |
46 | #include <net/irda/irda_device.h> | |
47 | ||
48 | #include "ali-ircc.h" | |
49 | ||
50 | #define CHIP_IO_EXTENT 8 | |
51 | #define BROKEN_DONGLE_ID | |
52 | ||
898b1d16 SO |
53 | #define ALI_IRCC_DRIVER_NAME "ali-ircc" |
54 | ||
55 | /* Power Management */ | |
56 | static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state); | |
57 | static int ali_ircc_resume(struct platform_device *dev); | |
58 | ||
59 | static struct platform_driver ali_ircc_driver = { | |
60 | .suspend = ali_ircc_suspend, | |
61 | .resume = ali_ircc_resume, | |
62 | .driver = { | |
63 | .name = ALI_IRCC_DRIVER_NAME, | |
72abb461 | 64 | .owner = THIS_MODULE, |
898b1d16 SO |
65 | }, |
66 | }; | |
1da177e4 LT |
67 | |
68 | /* Module parameters */ | |
69 | static int qos_mtt_bits = 0x07; /* 1 ms or more */ | |
70 | ||
71 | /* Use BIOS settions by default, but user may supply module parameters */ | |
72 | static unsigned int io[] = { ~0, ~0, ~0, ~0 }; | |
73 | static unsigned int irq[] = { 0, 0, 0, 0 }; | |
74 | static unsigned int dma[] = { 0, 0, 0, 0 }; | |
75 | ||
76 | static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info); | |
77 | static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info); | |
78 | static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info); | |
79 | ||
25985edc | 80 | /* These are the currently known ALi south-bridge chipsets, the only one difference |
1da177e4 LT |
81 | * is that M1543C doesn't support HP HDSL-3600 |
82 | */ | |
83 | static ali_chip_t chips[] = | |
84 | { | |
85 | { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 }, | |
86 | { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 }, | |
87 | { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 }, | |
88 | { NULL } | |
89 | }; | |
90 | ||
91 | /* Max 4 instances for now */ | |
92 | static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL }; | |
93 | ||
94 | /* Dongle Types */ | |
95 | static char *dongle_types[] = { | |
96 | "TFDS6000", | |
97 | "HP HSDL-3600", | |
98 | "HP HSDL-1100", | |
99 | "No dongle connected", | |
100 | }; | |
101 | ||
102 | /* Some prototypes */ | |
103 | static int ali_ircc_open(int i, chipio_t *info); | |
104 | ||
105 | static int ali_ircc_close(struct ali_ircc_cb *self); | |
106 | ||
107 | static int ali_ircc_setup(chipio_t *info); | |
108 | static int ali_ircc_is_receiving(struct ali_ircc_cb *self); | |
109 | static int ali_ircc_net_open(struct net_device *dev); | |
110 | static int ali_ircc_net_close(struct net_device *dev); | |
111 | static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
1da177e4 | 112 | static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud); |
1da177e4 LT |
113 | |
114 | /* SIR function */ | |
6518bbb8 SH |
115 | static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb, |
116 | struct net_device *dev); | |
1da177e4 LT |
117 | static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self); |
118 | static void ali_ircc_sir_receive(struct ali_ircc_cb *self); | |
119 | static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self); | |
120 | static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); | |
121 | static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed); | |
122 | ||
123 | /* FIR function */ | |
6518bbb8 SH |
124 | static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb, |
125 | struct net_device *dev); | |
1da177e4 LT |
126 | static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed); |
127 | static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self); | |
128 | static int ali_ircc_dma_receive(struct ali_ircc_cb *self); | |
129 | static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self); | |
130 | static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self); | |
131 | static void ali_ircc_dma_xmit(struct ali_ircc_cb *self); | |
132 | ||
133 | /* My Function */ | |
134 | static int ali_ircc_read_dongle_id (int i, chipio_t *info); | |
135 | static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed); | |
136 | ||
137 | /* ALi chip function */ | |
138 | static void SIR2FIR(int iobase); | |
139 | static void FIR2SIR(int iobase); | |
140 | static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable); | |
141 | ||
142 | /* | |
143 | * Function ali_ircc_init () | |
144 | * | |
145 | * Initialize chip. Find out whay kinds of chips we are dealing with | |
0b1974de | 146 | * and their configuration registers address |
1da177e4 LT |
147 | */ |
148 | static int __init ali_ircc_init(void) | |
149 | { | |
150 | ali_chip_t *chip; | |
151 | chipio_t info; | |
9c6c6795 | 152 | int ret; |
1da177e4 LT |
153 | int cfg, cfg_base; |
154 | int reg, revision; | |
155 | int i = 0; | |
156 | ||
898b1d16 SO |
157 | ret = platform_driver_register(&ali_ircc_driver); |
158 | if (ret) { | |
6c91023d JP |
159 | net_err_ratelimited("%s, Can't register driver!\n", |
160 | ALI_IRCC_DRIVER_NAME); | |
898b1d16 SO |
161 | return ret; |
162 | } | |
163 | ||
9c6c6795 | 164 | ret = -ENODEV; |
1da177e4 LT |
165 | |
166 | /* Probe for all the ALi chipsets we know about */ | |
167 | for (chip= chips; chip->name; chip++, i++) | |
168 | { | |
955a9d20 | 169 | pr_debug("%s(), Probing for %s ...\n", __func__, chip->name); |
1da177e4 LT |
170 | |
171 | /* Try all config registers for this chip */ | |
172 | for (cfg=0; cfg<2; cfg++) | |
173 | { | |
174 | cfg_base = chip->cfg[cfg]; | |
175 | if (!cfg_base) | |
176 | continue; | |
177 | ||
178 | memset(&info, 0, sizeof(chipio_t)); | |
179 | info.cfg_base = cfg_base; | |
180 | info.fir_base = io[i]; | |
181 | info.dma = dma[i]; | |
182 | info.irq = irq[i]; | |
183 | ||
184 | ||
185 | /* Enter Configuration */ | |
186 | outb(chip->entr1, cfg_base); | |
187 | outb(chip->entr2, cfg_base); | |
188 | ||
189 | /* Select Logical Device 5 Registers (UART2) */ | |
190 | outb(0x07, cfg_base); | |
191 | outb(0x05, cfg_base+1); | |
192 | ||
193 | /* Read Chip Identification Register */ | |
194 | outb(chip->cid_index, cfg_base); | |
195 | reg = inb(cfg_base+1); | |
196 | ||
197 | if (reg == chip->cid_value) | |
198 | { | |
955a9d20 JP |
199 | pr_debug("%s(), Chip found at 0x%03x\n", |
200 | __func__, cfg_base); | |
1da177e4 LT |
201 | |
202 | outb(0x1F, cfg_base); | |
203 | revision = inb(cfg_base+1); | |
955a9d20 JP |
204 | pr_debug("%s(), Found %s chip, revision=%d\n", |
205 | __func__, chip->name, revision); | |
1da177e4 LT |
206 | |
207 | /* | |
208 | * If the user supplies the base address, then | |
209 | * we init the chip, if not we probe the values | |
210 | * set by the BIOS | |
211 | */ | |
212 | if (io[i] < 2000) | |
213 | { | |
214 | chip->init(chip, &info); | |
215 | } | |
216 | else | |
217 | { | |
218 | chip->probe(chip, &info); | |
219 | } | |
220 | ||
221 | if (ali_ircc_open(i, &info) == 0) | |
222 | ret = 0; | |
223 | i++; | |
224 | } | |
225 | else | |
226 | { | |
955a9d20 JP |
227 | pr_debug("%s(), No %s chip at 0x%03x\n", |
228 | __func__, chip->name, cfg_base); | |
1da177e4 LT |
229 | } |
230 | /* Exit configuration */ | |
231 | outb(0xbb, cfg_base); | |
232 | } | |
233 | } | |
234 | ||
898b1d16 SO |
235 | if (ret) |
236 | platform_driver_unregister(&ali_ircc_driver); | |
237 | ||
1da177e4 LT |
238 | return ret; |
239 | } | |
240 | ||
241 | /* | |
242 | * Function ali_ircc_cleanup () | |
243 | * | |
244 | * Close all configured chips | |
245 | * | |
246 | */ | |
247 | static void __exit ali_ircc_cleanup(void) | |
248 | { | |
249 | int i; | |
250 | ||
9c3bd683 | 251 | for (i=0; i < ARRAY_SIZE(dev_self); i++) { |
1da177e4 LT |
252 | if (dev_self[i]) |
253 | ali_ircc_close(dev_self[i]); | |
254 | } | |
255 | ||
898b1d16 SO |
256 | platform_driver_unregister(&ali_ircc_driver); |
257 | ||
1da177e4 LT |
258 | } |
259 | ||
2d44a222 SH |
260 | static const struct net_device_ops ali_ircc_sir_ops = { |
261 | .ndo_open = ali_ircc_net_open, | |
262 | .ndo_stop = ali_ircc_net_close, | |
263 | .ndo_start_xmit = ali_ircc_sir_hard_xmit, | |
264 | .ndo_do_ioctl = ali_ircc_net_ioctl, | |
265 | }; | |
266 | ||
267 | static const struct net_device_ops ali_ircc_fir_ops = { | |
268 | .ndo_open = ali_ircc_net_open, | |
269 | .ndo_stop = ali_ircc_net_close, | |
270 | .ndo_start_xmit = ali_ircc_fir_hard_xmit, | |
271 | .ndo_do_ioctl = ali_ircc_net_ioctl, | |
272 | }; | |
273 | ||
1da177e4 LT |
274 | /* |
275 | * Function ali_ircc_open (int i, chipio_t *inf) | |
276 | * | |
277 | * Open driver instance | |
278 | * | |
279 | */ | |
280 | static int ali_ircc_open(int i, chipio_t *info) | |
281 | { | |
282 | struct net_device *dev; | |
283 | struct ali_ircc_cb *self; | |
1da177e4 LT |
284 | int dongle_id; |
285 | int err; | |
286 | ||
9c3bd683 | 287 | if (i >= ARRAY_SIZE(dev_self)) { |
6c91023d JP |
288 | net_err_ratelimited("%s(), maximum number of supported chips reached!\n", |
289 | __func__); | |
9c3bd683 BH |
290 | return -ENOMEM; |
291 | } | |
1da177e4 LT |
292 | |
293 | /* Set FIR FIFO and DMA Threshold */ | |
294 | if ((ali_ircc_setup(info)) == -1) | |
295 | return -1; | |
296 | ||
297 | dev = alloc_irdadev(sizeof(*self)); | |
298 | if (dev == NULL) { | |
6c91023d JP |
299 | net_err_ratelimited("%s(), can't allocate memory for control block!\n", |
300 | __func__); | |
1da177e4 LT |
301 | return -ENOMEM; |
302 | } | |
303 | ||
4cf1653a | 304 | self = netdev_priv(dev); |
1da177e4 LT |
305 | self->netdev = dev; |
306 | spin_lock_init(&self->lock); | |
307 | ||
308 | /* Need to store self somewhere */ | |
309 | dev_self[i] = self; | |
310 | self->index = i; | |
311 | ||
312 | /* Initialize IO */ | |
313 | self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */ | |
314 | self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */ | |
315 | self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */ | |
316 | self->io.irq = info->irq; | |
317 | self->io.fir_ext = CHIP_IO_EXTENT; | |
318 | self->io.dma = info->dma; | |
319 | self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */ | |
320 | ||
321 | /* Reserve the ioports that we need */ | |
898b1d16 SO |
322 | if (!request_region(self->io.fir_base, self->io.fir_ext, |
323 | ALI_IRCC_DRIVER_NAME)) { | |
6c91023d JP |
324 | net_warn_ratelimited("%s(), can't get iobase of 0x%03x\n", |
325 | __func__, self->io.fir_base); | |
1da177e4 LT |
326 | err = -ENODEV; |
327 | goto err_out1; | |
328 | } | |
329 | ||
330 | /* Initialize QoS for this device */ | |
331 | irda_init_max_qos_capabilies(&self->qos); | |
332 | ||
333 | /* The only value we must override it the baudrate */ | |
334 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| | |
335 | IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM | |
336 | ||
337 | self->qos.min_turn_time.bits = qos_mtt_bits; | |
338 | ||
339 | irda_qos_bits_to_value(&self->qos); | |
340 | ||
341 | /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ | |
342 | self->rx_buff.truesize = 14384; | |
343 | self->tx_buff.truesize = 14384; | |
344 | ||
345 | /* Allocate memory if needed */ | |
346 | self->rx_buff.head = | |
ede23fa8 JP |
347 | dma_zalloc_coherent(NULL, self->rx_buff.truesize, |
348 | &self->rx_buff_dma, GFP_KERNEL); | |
1da177e4 LT |
349 | if (self->rx_buff.head == NULL) { |
350 | err = -ENOMEM; | |
351 | goto err_out2; | |
352 | } | |
1da177e4 LT |
353 | |
354 | self->tx_buff.head = | |
ede23fa8 JP |
355 | dma_zalloc_coherent(NULL, self->tx_buff.truesize, |
356 | &self->tx_buff_dma, GFP_KERNEL); | |
1da177e4 LT |
357 | if (self->tx_buff.head == NULL) { |
358 | err = -ENOMEM; | |
359 | goto err_out3; | |
360 | } | |
1da177e4 LT |
361 | |
362 | self->rx_buff.in_frame = FALSE; | |
363 | self->rx_buff.state = OUTSIDE_FRAME; | |
364 | self->tx_buff.data = self->tx_buff.head; | |
365 | self->rx_buff.data = self->rx_buff.head; | |
366 | ||
367 | /* Reset Tx queue info */ | |
368 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; | |
369 | self->tx_fifo.tail = self->tx_buff.head; | |
370 | ||
1da177e4 | 371 | /* Override the network functions we need to use */ |
2d44a222 | 372 | dev->netdev_ops = &ali_ircc_sir_ops; |
1da177e4 LT |
373 | |
374 | err = register_netdev(dev); | |
375 | if (err) { | |
6c91023d JP |
376 | net_err_ratelimited("%s(), register_netdev() failed!\n", |
377 | __func__); | |
1da177e4 LT |
378 | goto err_out4; |
379 | } | |
6c91023d | 380 | net_info_ratelimited("IrDA: Registered device %s\n", dev->name); |
1da177e4 LT |
381 | |
382 | /* Check dongle id */ | |
383 | dongle_id = ali_ircc_read_dongle_id(i, info); | |
6c91023d JP |
384 | net_info_ratelimited("%s(), %s, Found dongle: %s\n", |
385 | __func__, ALI_IRCC_DRIVER_NAME, | |
386 | dongle_types[dongle_id]); | |
1da177e4 LT |
387 | |
388 | self->io.dongle_id = dongle_id; | |
1da177e4 | 389 | |
1da177e4 LT |
390 | |
391 | return 0; | |
392 | ||
393 | err_out4: | |
394 | dma_free_coherent(NULL, self->tx_buff.truesize, | |
395 | self->tx_buff.head, self->tx_buff_dma); | |
396 | err_out3: | |
397 | dma_free_coherent(NULL, self->rx_buff.truesize, | |
398 | self->rx_buff.head, self->rx_buff_dma); | |
399 | err_out2: | |
400 | release_region(self->io.fir_base, self->io.fir_ext); | |
401 | err_out1: | |
402 | dev_self[i] = NULL; | |
403 | free_netdev(dev); | |
404 | return err; | |
405 | } | |
406 | ||
407 | ||
408 | /* | |
409 | * Function ali_ircc_close (self) | |
410 | * | |
411 | * Close driver instance | |
412 | * | |
413 | */ | |
414 | static int __exit ali_ircc_close(struct ali_ircc_cb *self) | |
415 | { | |
416 | int iobase; | |
417 | ||
1da177e4 LT |
418 | IRDA_ASSERT(self != NULL, return -1;); |
419 | ||
420 | iobase = self->io.fir_base; | |
421 | ||
422 | /* Remove netdevice */ | |
423 | unregister_netdev(self->netdev); | |
424 | ||
425 | /* Release the PORT that this driver is using */ | |
955a9d20 | 426 | pr_debug("%s(), Releasing Region %03x\n", __func__, self->io.fir_base); |
1da177e4 LT |
427 | release_region(self->io.fir_base, self->io.fir_ext); |
428 | ||
429 | if (self->tx_buff.head) | |
430 | dma_free_coherent(NULL, self->tx_buff.truesize, | |
431 | self->tx_buff.head, self->tx_buff_dma); | |
432 | ||
433 | if (self->rx_buff.head) | |
434 | dma_free_coherent(NULL, self->rx_buff.truesize, | |
435 | self->rx_buff.head, self->rx_buff_dma); | |
436 | ||
437 | dev_self[self->index] = NULL; | |
438 | free_netdev(self->netdev); | |
439 | ||
1da177e4 LT |
440 | |
441 | return 0; | |
442 | } | |
443 | ||
444 | /* | |
445 | * Function ali_ircc_init_43 (chip, info) | |
446 | * | |
447 | * Initialize the ALi M1543 chip. | |
448 | */ | |
449 | static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info) | |
450 | { | |
451 | /* All controller information like I/O address, DMA channel, IRQ | |
452 | * are set by BIOS | |
453 | */ | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | /* | |
459 | * Function ali_ircc_init_53 (chip, info) | |
460 | * | |
461 | * Initialize the ALi M1535 chip. | |
462 | */ | |
463 | static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info) | |
464 | { | |
465 | /* All controller information like I/O address, DMA channel, IRQ | |
466 | * are set by BIOS | |
467 | */ | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | /* | |
473 | * Function ali_ircc_probe_53 (chip, info) | |
474 | * | |
475 | * Probes for the ALi M1535D or M1535 | |
476 | */ | |
477 | static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info) | |
478 | { | |
479 | int cfg_base = info->cfg_base; | |
480 | int hi, low, reg; | |
481 | ||
1da177e4 LT |
482 | |
483 | /* Enter Configuration */ | |
484 | outb(chip->entr1, cfg_base); | |
485 | outb(chip->entr2, cfg_base); | |
486 | ||
487 | /* Select Logical Device 5 Registers (UART2) */ | |
488 | outb(0x07, cfg_base); | |
489 | outb(0x05, cfg_base+1); | |
490 | ||
491 | /* Read address control register */ | |
492 | outb(0x60, cfg_base); | |
493 | hi = inb(cfg_base+1); | |
494 | outb(0x61, cfg_base); | |
495 | low = inb(cfg_base+1); | |
496 | info->fir_base = (hi<<8) + low; | |
497 | ||
498 | info->sir_base = info->fir_base; | |
499 | ||
955a9d20 | 500 | pr_debug("%s(), probing fir_base=0x%03x\n", __func__, info->fir_base); |
1da177e4 LT |
501 | |
502 | /* Read IRQ control register */ | |
503 | outb(0x70, cfg_base); | |
504 | reg = inb(cfg_base+1); | |
505 | info->irq = reg & 0x0f; | |
955a9d20 | 506 | pr_debug("%s(), probing irq=%d\n", __func__, info->irq); |
1da177e4 LT |
507 | |
508 | /* Read DMA channel */ | |
509 | outb(0x74, cfg_base); | |
510 | reg = inb(cfg_base+1); | |
511 | info->dma = reg & 0x07; | |
512 | ||
513 | if(info->dma == 0x04) | |
6c91023d JP |
514 | net_warn_ratelimited("%s(), No DMA channel assigned !\n", |
515 | __func__); | |
1da177e4 | 516 | else |
955a9d20 | 517 | pr_debug("%s(), probing dma=%d\n", __func__, info->dma); |
1da177e4 LT |
518 | |
519 | /* Read Enabled Status */ | |
520 | outb(0x30, cfg_base); | |
521 | reg = inb(cfg_base+1); | |
522 | info->enabled = (reg & 0x80) && (reg & 0x01); | |
955a9d20 | 523 | pr_debug("%s(), probing enabled=%d\n", __func__, info->enabled); |
1da177e4 LT |
524 | |
525 | /* Read Power Status */ | |
526 | outb(0x22, cfg_base); | |
527 | reg = inb(cfg_base+1); | |
528 | info->suspended = (reg & 0x20); | |
955a9d20 | 529 | pr_debug("%s(), probing suspended=%d\n", __func__, info->suspended); |
1da177e4 LT |
530 | |
531 | /* Exit configuration */ | |
532 | outb(0xbb, cfg_base); | |
533 | ||
1da177e4 LT |
534 | |
535 | return 0; | |
536 | } | |
537 | ||
538 | /* | |
539 | * Function ali_ircc_setup (info) | |
540 | * | |
541 | * Set FIR FIFO and DMA Threshold | |
542 | * Returns non-negative on success. | |
543 | * | |
544 | */ | |
545 | static int ali_ircc_setup(chipio_t *info) | |
546 | { | |
547 | unsigned char tmp; | |
548 | int version; | |
549 | int iobase = info->fir_base; | |
550 | ||
1da177e4 LT |
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 | { | |
6c91023d JP |
570 | net_err_ratelimited("%s, Wrong chip version %02x\n", |
571 | ALI_IRCC_DRIVER_NAME, version); | |
1da177e4 LT |
572 | return -1; |
573 | } | |
574 | ||
1da177e4 LT |
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 | ||
6c91023d JP |
604 | net_info_ratelimited("%s, driver loaded (Benjamin Kong)\n", |
605 | ALI_IRCC_DRIVER_NAME); | |
1da177e4 LT |
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 | ||
1da177e4 LT |
611 | |
612 | return 0; | |
613 | } | |
614 | ||
615 | /* | |
616 | * Function ali_ircc_read_dongle_id (int index, info) | |
617 | * | |
3f79410c | 618 | * Try to read dongle identification. This procedure needs to be executed |
1da177e4 LT |
619 | * once after power-on/reset. It also needs to be used whenever you suspect |
620 | * that the user may have plugged/unplugged the IrDA Dongle. | |
621 | */ | |
622 | static int ali_ircc_read_dongle_id (int i, chipio_t *info) | |
623 | { | |
624 | int dongle_id, reg; | |
625 | int cfg_base = info->cfg_base; | |
626 | ||
1da177e4 LT |
627 | |
628 | /* Enter Configuration */ | |
629 | outb(chips[i].entr1, cfg_base); | |
630 | outb(chips[i].entr2, cfg_base); | |
631 | ||
632 | /* Select Logical Device 5 Registers (UART2) */ | |
633 | outb(0x07, cfg_base); | |
634 | outb(0x05, cfg_base+1); | |
635 | ||
636 | /* Read Dongle ID */ | |
637 | outb(0xf0, cfg_base); | |
638 | reg = inb(cfg_base+1); | |
639 | dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01); | |
955a9d20 JP |
640 | pr_debug("%s(), probing dongle_id=%d, dongle_types=%s\n", |
641 | __func__, dongle_id, dongle_types[dongle_id]); | |
1da177e4 LT |
642 | |
643 | /* Exit configuration */ | |
644 | outb(0xbb, cfg_base); | |
645 | ||
1da177e4 LT |
646 | |
647 | return dongle_id; | |
648 | } | |
649 | ||
650 | /* | |
651 | * Function ali_ircc_interrupt (irq, dev_id, regs) | |
652 | * | |
653 | * An interrupt from the chip has arrived. Time to do some work | |
654 | * | |
655 | */ | |
7d12e780 | 656 | static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id) |
1da177e4 | 657 | { |
c31f28e7 | 658 | struct net_device *dev = dev_id; |
1da177e4 LT |
659 | struct ali_ircc_cb *self; |
660 | int ret; | |
661 | ||
1da177e4 | 662 | |
4cf1653a | 663 | self = netdev_priv(dev); |
1da177e4 LT |
664 | |
665 | spin_lock(&self->lock); | |
666 | ||
667 | /* Dispatch interrupt handler for the current speed */ | |
668 | if (self->io.speed > 115200) | |
669 | ret = ali_ircc_fir_interrupt(self); | |
670 | else | |
671 | ret = ali_ircc_sir_interrupt(self); | |
672 | ||
673 | spin_unlock(&self->lock); | |
674 | ||
1da177e4 LT |
675 | return ret; |
676 | } | |
677 | /* | |
678 | * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self) | |
679 | * | |
680 | * Handle MIR/FIR interrupt | |
681 | * | |
682 | */ | |
683 | static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self) | |
684 | { | |
685 | __u8 eir, OldMessageCount; | |
686 | int iobase, tmp; | |
687 | ||
1da177e4 LT |
688 | |
689 | iobase = self->io.fir_base; | |
690 | ||
691 | switch_bank(iobase, BANK0); | |
692 | self->InterruptID = inb(iobase+FIR_IIR); | |
693 | self->BusStatus = inb(iobase+FIR_BSR); | |
694 | ||
695 | OldMessageCount = (self->LineStatus + 1) & 0x07; | |
696 | self->LineStatus = inb(iobase+FIR_LSR); | |
697 | //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM | |
698 | eir = self->InterruptID & self->ier; /* Mask out the interesting ones */ | |
699 | ||
955a9d20 JP |
700 | pr_debug("%s(), self->InterruptID = %x\n", __func__, self->InterruptID); |
701 | pr_debug("%s(), self->LineStatus = %x\n", __func__, self->LineStatus); | |
702 | pr_debug("%s(), self->ier = %x\n", __func__, self->ier); | |
703 | pr_debug("%s(), eir = %x\n", __func__, eir); | |
1da177e4 LT |
704 | |
705 | /* Disable interrupts */ | |
706 | SetCOMInterrupts(self, FALSE); | |
707 | ||
708 | /* Tx or Rx Interrupt */ | |
709 | ||
710 | if (eir & IIR_EOM) | |
711 | { | |
712 | if (self->io.direction == IO_XMIT) /* TX */ | |
713 | { | |
955a9d20 JP |
714 | pr_debug("%s(), ******* IIR_EOM (Tx) *******\n", |
715 | __func__); | |
1da177e4 LT |
716 | |
717 | if(ali_ircc_dma_xmit_complete(self)) | |
718 | { | |
719 | if (irda_device_txqueue_empty(self->netdev)) | |
720 | { | |
721 | /* Prepare for receive */ | |
722 | ali_ircc_dma_receive(self); | |
723 | self->ier = IER_EOM; | |
724 | } | |
725 | } | |
726 | else | |
727 | { | |
728 | self->ier = IER_EOM; | |
729 | } | |
730 | ||
731 | } | |
732 | else /* RX */ | |
733 | { | |
955a9d20 JP |
734 | pr_debug("%s(), ******* IIR_EOM (Rx) *******\n", |
735 | __func__); | |
1da177e4 LT |
736 | |
737 | if(OldMessageCount > ((self->LineStatus+1) & 0x07)) | |
738 | { | |
739 | self->rcvFramesOverflow = TRUE; | |
955a9d20 JP |
740 | pr_debug("%s(), ******* self->rcvFramesOverflow = TRUE ********\n", |
741 | __func__); | |
1da177e4 LT |
742 | } |
743 | ||
744 | if (ali_ircc_dma_receive_complete(self)) | |
745 | { | |
955a9d20 JP |
746 | pr_debug("%s(), ******* receive complete ********\n", |
747 | __func__); | |
1da177e4 LT |
748 | |
749 | self->ier = IER_EOM; | |
750 | } | |
751 | else | |
752 | { | |
955a9d20 JP |
753 | pr_debug("%s(), ******* Not receive complete ********\n", |
754 | __func__); | |
1da177e4 LT |
755 | |
756 | self->ier = IER_EOM | IER_TIMER; | |
757 | } | |
758 | ||
759 | } | |
760 | } | |
761 | /* Timer Interrupt */ | |
762 | else if (eir & IIR_TIMER) | |
763 | { | |
764 | if(OldMessageCount > ((self->LineStatus+1) & 0x07)) | |
765 | { | |
766 | self->rcvFramesOverflow = TRUE; | |
955a9d20 JP |
767 | pr_debug("%s(), ******* self->rcvFramesOverflow = TRUE *******\n", |
768 | __func__); | |
1da177e4 LT |
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 | ||
1da177e4 LT |
800 | return IRQ_RETVAL(eir); |
801 | } | |
802 | ||
803 | /* | |
804 | * Function ali_ircc_sir_interrupt (irq, self, eir) | |
805 | * | |
806 | * Handle SIR interrupt | |
807 | * | |
808 | */ | |
809 | static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self) | |
810 | { | |
811 | int iobase; | |
812 | int iir, lsr; | |
813 | ||
1da177e4 LT |
814 | |
815 | iobase = self->io.sir_base; | |
816 | ||
817 | iir = inb(iobase+UART_IIR) & UART_IIR_ID; | |
818 | if (iir) { | |
819 | /* Clear interrupt */ | |
820 | lsr = inb(iobase+UART_LSR); | |
821 | ||
955a9d20 JP |
822 | pr_debug("%s(), iir=%02x, lsr=%02x, iobase=%#x\n", |
823 | __func__, iir, lsr, iobase); | |
1da177e4 LT |
824 | |
825 | switch (iir) | |
826 | { | |
827 | case UART_IIR_RLSI: | |
955a9d20 | 828 | pr_debug("%s(), RLSI\n", __func__); |
1da177e4 LT |
829 | break; |
830 | case UART_IIR_RDI: | |
831 | /* Receive interrupt */ | |
832 | ali_ircc_sir_receive(self); | |
833 | break; | |
834 | case UART_IIR_THRI: | |
835 | if (lsr & UART_LSR_THRE) | |
836 | { | |
837 | /* Transmitter ready for data */ | |
838 | ali_ircc_sir_write_wakeup(self); | |
839 | } | |
840 | break; | |
841 | default: | |
955a9d20 JP |
842 | pr_debug("%s(), unhandled IIR=%#x\n", |
843 | __func__, iir); | |
1da177e4 LT |
844 | break; |
845 | } | |
846 | ||
847 | } | |
848 | ||
849 | ||
1da177e4 LT |
850 | return IRQ_RETVAL(iir); |
851 | } | |
852 | ||
853 | ||
854 | /* | |
855 | * Function ali_ircc_sir_receive (self) | |
856 | * | |
857 | * Receive one frame from the infrared port | |
858 | * | |
859 | */ | |
860 | static void ali_ircc_sir_receive(struct ali_ircc_cb *self) | |
861 | { | |
862 | int boguscount = 0; | |
863 | int iobase; | |
864 | ||
1da177e4 LT |
865 | IRDA_ASSERT(self != NULL, return;); |
866 | ||
867 | iobase = self->io.sir_base; | |
868 | ||
869 | /* | |
870 | * Receive all characters in Rx FIFO, unwrap and unstuff them. | |
871 | * async_unwrap_char will deliver all found frames | |
872 | */ | |
873 | do { | |
af049081 | 874 | async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff, |
1da177e4 LT |
875 | inb(iobase+UART_RX)); |
876 | ||
877 | /* Make sure we don't stay here too long */ | |
878 | if (boguscount++ > 32) { | |
955a9d20 | 879 | pr_debug("%s(), breaking!\n", __func__); |
1da177e4 LT |
880 | break; |
881 | } | |
882 | } while (inb(iobase+UART_LSR) & UART_LSR_DR); | |
883 | ||
1da177e4 LT |
884 | } |
885 | ||
886 | /* | |
887 | * Function ali_ircc_sir_write_wakeup (tty) | |
888 | * | |
889 | * Called by the driver when there's room for more data. If we have | |
890 | * more packets to send, we send them here. | |
891 | * | |
892 | */ | |
893 | static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self) | |
894 | { | |
895 | int actual = 0; | |
896 | int iobase; | |
897 | ||
898 | IRDA_ASSERT(self != NULL, return;); | |
899 | ||
1da177e4 LT |
900 | |
901 | iobase = self->io.sir_base; | |
902 | ||
903 | /* Finished with frame? */ | |
904 | if (self->tx_buff.len > 0) | |
905 | { | |
906 | /* Write data left in transmit buffer */ | |
907 | actual = ali_ircc_sir_write(iobase, self->io.fifo_size, | |
908 | self->tx_buff.data, self->tx_buff.len); | |
909 | self->tx_buff.data += actual; | |
910 | self->tx_buff.len -= actual; | |
911 | } | |
912 | else | |
913 | { | |
914 | if (self->new_speed) | |
915 | { | |
916 | /* We must wait until all data are gone */ | |
917 | while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT)) | |
955a9d20 | 918 | pr_debug("%s(), UART_LSR_THRE\n", __func__); |
1da177e4 | 919 | |
955a9d20 JP |
920 | pr_debug("%s(), Changing speed! self->new_speed = %d\n", |
921 | __func__, self->new_speed); | |
1da177e4 LT |
922 | ali_ircc_change_speed(self, self->new_speed); |
923 | self->new_speed = 0; | |
924 | ||
925 | // benjamin 2000/11/10 06:32PM | |
926 | if (self->io.speed > 115200) | |
927 | { | |
955a9d20 JP |
928 | pr_debug("%s(), ali_ircc_change_speed from UART_LSR_TEMT\n", |
929 | __func__); | |
1da177e4 LT |
930 | |
931 | self->ier = IER_EOM; | |
932 | // SetCOMInterrupts(self, TRUE); | |
933 | return; | |
934 | } | |
935 | } | |
936 | else | |
937 | { | |
938 | netif_wake_queue(self->netdev); | |
939 | } | |
940 | ||
af049081 | 941 | self->netdev->stats.tx_packets++; |
1da177e4 LT |
942 | |
943 | /* Turn on receive interrupts */ | |
944 | outb(UART_IER_RDI, iobase+UART_IER); | |
945 | } | |
946 | ||
1da177e4 LT |
947 | } |
948 | ||
949 | static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud) | |
950 | { | |
951 | struct net_device *dev = self->netdev; | |
952 | int iobase; | |
953 | ||
1da177e4 | 954 | |
955a9d20 | 955 | pr_debug("%s(), setting speed = %d\n", __func__, baud); |
1da177e4 LT |
956 | |
957 | /* This function *must* be called with irq off and spin-lock. | |
958 | * - Jean II */ | |
959 | ||
960 | iobase = self->io.fir_base; | |
961 | ||
962 | SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM | |
963 | ||
964 | /* Go to MIR, FIR Speed */ | |
965 | if (baud > 115200) | |
966 | { | |
967 | ||
968 | ||
969 | ali_ircc_fir_change_speed(self, baud); | |
970 | ||
971 | /* Install FIR xmit handler*/ | |
2d44a222 | 972 | dev->netdev_ops = &ali_ircc_fir_ops; |
1da177e4 LT |
973 | |
974 | /* Enable Interuupt */ | |
975 | self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM | |
976 | ||
d82603c6 | 977 | /* Be ready for incoming frames */ |
1da177e4 LT |
978 | ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete |
979 | } | |
980 | /* Go to SIR Speed */ | |
981 | else | |
982 | { | |
983 | ali_ircc_sir_change_speed(self, baud); | |
984 | ||
985 | /* Install SIR xmit handler*/ | |
2d44a222 | 986 | dev->netdev_ops = &ali_ircc_sir_ops; |
1da177e4 LT |
987 | } |
988 | ||
989 | ||
990 | SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM | |
991 | ||
992 | netif_wake_queue(self->netdev); | |
993 | ||
1da177e4 LT |
994 | } |
995 | ||
996 | static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud) | |
997 | { | |
998 | ||
999 | int iobase; | |
c2fd03a0 | 1000 | struct ali_ircc_cb *self = priv; |
1da177e4 LT |
1001 | struct net_device *dev; |
1002 | ||
1da177e4 LT |
1003 | |
1004 | IRDA_ASSERT(self != NULL, return;); | |
1005 | ||
1006 | dev = self->netdev; | |
1007 | iobase = self->io.fir_base; | |
1008 | ||
955a9d20 JP |
1009 | pr_debug("%s(), self->io.speed = %d, change to speed = %d\n", |
1010 | __func__, self->io.speed, baud); | |
1da177e4 LT |
1011 | |
1012 | /* Come from SIR speed */ | |
1013 | if(self->io.speed <=115200) | |
1014 | { | |
1015 | SIR2FIR(iobase); | |
1016 | } | |
1017 | ||
1018 | /* Update accounting for new speed */ | |
1019 | self->io.speed = baud; | |
1020 | ||
1021 | // Set Dongle Speed mode | |
1022 | ali_ircc_change_dongle_speed(self, baud); | |
1023 | ||
1da177e4 LT |
1024 | } |
1025 | ||
1026 | /* | |
1027 | * Function ali_sir_change_speed (self, speed) | |
1028 | * | |
1029 | * Set speed of IrDA port to specified baudrate | |
1030 | * | |
1031 | */ | |
1032 | static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed) | |
1033 | { | |
c2fd03a0 | 1034 | struct ali_ircc_cb *self = priv; |
1da177e4 LT |
1035 | unsigned long flags; |
1036 | int iobase; | |
1037 | int fcr; /* FIFO control reg */ | |
1038 | int lcr; /* Line control reg */ | |
1039 | int divisor; | |
1040 | ||
1da177e4 | 1041 | |
955a9d20 | 1042 | pr_debug("%s(), Setting speed to: %d\n", __func__, speed); |
1da177e4 LT |
1043 | |
1044 | IRDA_ASSERT(self != NULL, return;); | |
1045 | ||
1046 | iobase = self->io.sir_base; | |
1047 | ||
1048 | /* Come from MIR or FIR speed */ | |
1049 | if(self->io.speed >115200) | |
1050 | { | |
1051 | // Set Dongle Speed mode first | |
1052 | ali_ircc_change_dongle_speed(self, speed); | |
1053 | ||
1054 | FIR2SIR(iobase); | |
1055 | } | |
1056 | ||
1057 | // Clear Line and Auxiluary status registers 2000/11/24 11:47AM | |
1058 | ||
1059 | inb(iobase+UART_LSR); | |
1060 | inb(iobase+UART_SCR); | |
1061 | ||
1062 | /* Update accounting for new speed */ | |
1063 | self->io.speed = speed; | |
1064 | ||
1065 | spin_lock_irqsave(&self->lock, flags); | |
1066 | ||
1067 | divisor = 115200/speed; | |
1068 | ||
1069 | fcr = UART_FCR_ENABLE_FIFO; | |
1070 | ||
1071 | /* | |
1072 | * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and | |
1073 | * almost 1,7 ms at 19200 bps. At speeds above that we can just forget | |
1074 | * about this timeout since it will always be fast enough. | |
1075 | */ | |
1076 | if (self->io.speed < 38400) | |
1077 | fcr |= UART_FCR_TRIGGER_1; | |
1078 | else | |
1079 | fcr |= UART_FCR_TRIGGER_14; | |
1080 | ||
1081 | /* IrDA ports use 8N1 */ | |
1082 | lcr = UART_LCR_WLEN8; | |
1083 | ||
1084 | outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */ | |
1085 | outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */ | |
1086 | outb(divisor >> 8, iobase+UART_DLM); | |
1087 | outb(lcr, iobase+UART_LCR); /* Set 8N1 */ | |
1088 | outb(fcr, iobase+UART_FCR); /* Enable FIFO's */ | |
1089 | ||
25985edc | 1090 | /* without this, the connection will be broken after come back from FIR speed, |
1da177e4 LT |
1091 | but with this, the SIR connection is harder to established */ |
1092 | outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR); | |
1093 | ||
1094 | spin_unlock_irqrestore(&self->lock, flags); | |
1095 | ||
1da177e4 LT |
1096 | } |
1097 | ||
1098 | static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed) | |
1099 | { | |
1100 | ||
c2fd03a0 | 1101 | struct ali_ircc_cb *self = priv; |
1da177e4 LT |
1102 | int iobase,dongle_id; |
1103 | int tmp = 0; | |
1104 | ||
1da177e4 LT |
1105 | |
1106 | iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */ | |
1107 | dongle_id = self->io.dongle_id; | |
1108 | ||
1109 | /* We are already locked, no need to do it again */ | |
1110 | ||
955a9d20 JP |
1111 | pr_debug("%s(), Set Speed for %s , Speed = %d\n", |
1112 | __func__, dongle_types[dongle_id], speed); | |
1da177e4 LT |
1113 | |
1114 | switch_bank(iobase, BANK2); | |
1115 | tmp = inb(iobase+FIR_IRDA_CR); | |
1116 | ||
1117 | /* IBM type dongle */ | |
1118 | if(dongle_id == 0) | |
1119 | { | |
1120 | if(speed == 4000000) | |
1121 | { | |
1122 | // __ __ | |
1123 | // SD/MODE __| |__ __ | |
1124 | // __ __ | |
1125 | // IRTX __ __| |__ | |
1126 | // T1 T2 T3 T4 T5 | |
1127 | ||
1128 | tmp &= ~IRDA_CR_HDLC; // HDLC=0 | |
1129 | tmp |= IRDA_CR_CRC; // CRC=1 | |
1130 | ||
1131 | switch_bank(iobase, BANK2); | |
1132 | outb(tmp, iobase+FIR_IRDA_CR); | |
1133 | ||
1134 | // T1 -> SD/MODE:0 IRTX:0 | |
1135 | tmp &= ~0x09; | |
1136 | tmp |= 0x02; | |
1137 | outb(tmp, iobase+FIR_IRDA_CR); | |
1138 | udelay(2); | |
1139 | ||
1140 | // T2 -> SD/MODE:1 IRTX:0 | |
1141 | tmp &= ~0x01; | |
1142 | tmp |= 0x0a; | |
1143 | outb(tmp, iobase+FIR_IRDA_CR); | |
1144 | udelay(2); | |
1145 | ||
1146 | // T3 -> SD/MODE:1 IRTX:1 | |
1147 | tmp |= 0x0b; | |
1148 | outb(tmp, iobase+FIR_IRDA_CR); | |
1149 | udelay(2); | |
1150 | ||
1151 | // T4 -> SD/MODE:0 IRTX:1 | |
1152 | tmp &= ~0x08; | |
1153 | tmp |= 0x03; | |
1154 | outb(tmp, iobase+FIR_IRDA_CR); | |
1155 | udelay(2); | |
1156 | ||
1157 | // T5 -> SD/MODE:0 IRTX:0 | |
1158 | tmp &= ~0x09; | |
1159 | tmp |= 0x02; | |
1160 | outb(tmp, iobase+FIR_IRDA_CR); | |
1161 | udelay(2); | |
1162 | ||
1163 | // reset -> Normal TX output Signal | |
1164 | outb(tmp & ~0x02, iobase+FIR_IRDA_CR); | |
1165 | } | |
1166 | else /* speed <=1152000 */ | |
1167 | { | |
1168 | // __ | |
1169 | // SD/MODE __| |__ | |
1170 | // | |
1171 | // IRTX ________ | |
1172 | // T1 T2 T3 | |
1173 | ||
1174 | /* MIR 115200, 57600 */ | |
1175 | if (speed==1152000) | |
1176 | { | |
1177 | tmp |= 0xA0; //HDLC=1, 1.152Mbps=1 | |
1178 | } | |
1179 | else | |
1180 | { | |
1181 | tmp &=~0x80; //HDLC 0.576Mbps | |
1182 | tmp |= 0x20; //HDLC=1, | |
1183 | } | |
1184 | ||
1185 | tmp |= IRDA_CR_CRC; // CRC=1 | |
1186 | ||
1187 | switch_bank(iobase, BANK2); | |
1188 | outb(tmp, iobase+FIR_IRDA_CR); | |
1189 | ||
1190 | /* MIR 115200, 57600 */ | |
1191 | ||
1192 | //switch_bank(iobase, BANK2); | |
1193 | // T1 -> SD/MODE:0 IRTX:0 | |
1194 | tmp &= ~0x09; | |
1195 | tmp |= 0x02; | |
1196 | outb(tmp, iobase+FIR_IRDA_CR); | |
1197 | udelay(2); | |
1198 | ||
1199 | // T2 -> SD/MODE:1 IRTX:0 | |
1200 | tmp &= ~0x01; | |
1201 | tmp |= 0x0a; | |
1202 | outb(tmp, iobase+FIR_IRDA_CR); | |
1203 | ||
1204 | // T3 -> SD/MODE:0 IRTX:0 | |
1205 | tmp &= ~0x09; | |
1206 | tmp |= 0x02; | |
1207 | outb(tmp, iobase+FIR_IRDA_CR); | |
1208 | udelay(2); | |
1209 | ||
1210 | // reset -> Normal TX output Signal | |
1211 | outb(tmp & ~0x02, iobase+FIR_IRDA_CR); | |
1212 | } | |
1213 | } | |
1214 | else if (dongle_id == 1) /* HP HDSL-3600 */ | |
1215 | { | |
1216 | switch(speed) | |
1217 | { | |
1218 | case 4000000: | |
1219 | tmp &= ~IRDA_CR_HDLC; // HDLC=0 | |
1220 | break; | |
1221 | ||
1222 | case 1152000: | |
1223 | tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 | |
1224 | break; | |
1225 | ||
1226 | case 576000: | |
1227 | tmp &=~0x80; // HDLC 0.576Mbps | |
1228 | tmp |= 0x20; // HDLC=1, | |
1229 | break; | |
1230 | } | |
1231 | ||
1232 | tmp |= IRDA_CR_CRC; // CRC=1 | |
1233 | ||
1234 | switch_bank(iobase, BANK2); | |
1235 | outb(tmp, iobase+FIR_IRDA_CR); | |
1236 | } | |
1237 | else /* HP HDSL-1100 */ | |
1238 | { | |
1239 | if(speed <= 115200) /* SIR */ | |
1240 | { | |
1241 | ||
1242 | tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0 | |
1243 | ||
1244 | switch_bank(iobase, BANK2); | |
1245 | outb(tmp, iobase+FIR_IRDA_CR); | |
1246 | } | |
1247 | else /* MIR FIR */ | |
1248 | { | |
1249 | ||
1250 | switch(speed) | |
1251 | { | |
1252 | case 4000000: | |
1253 | tmp &= ~IRDA_CR_HDLC; // HDLC=0 | |
1254 | break; | |
1255 | ||
1256 | case 1152000: | |
1257 | tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 | |
1258 | break; | |
1259 | ||
1260 | case 576000: | |
1261 | tmp &=~0x80; // HDLC 0.576Mbps | |
1262 | tmp |= 0x20; // HDLC=1, | |
1263 | break; | |
1264 | } | |
1265 | ||
1266 | tmp |= IRDA_CR_CRC; // CRC=1 | |
1267 | tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1 | |
1268 | ||
1269 | switch_bank(iobase, BANK2); | |
1270 | outb(tmp, iobase+FIR_IRDA_CR); | |
1271 | } | |
1272 | } | |
1273 | ||
1274 | switch_bank(iobase, BANK0); | |
1275 | ||
1da177e4 LT |
1276 | } |
1277 | ||
1278 | /* | |
1279 | * Function ali_ircc_sir_write (driver) | |
1280 | * | |
1281 | * Fill Tx FIFO with transmit data | |
1282 | * | |
1283 | */ | |
1284 | static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) | |
1285 | { | |
1286 | int actual = 0; | |
1287 | ||
1da177e4 LT |
1288 | |
1289 | /* Tx FIFO should be empty! */ | |
1290 | if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) { | |
955a9d20 | 1291 | pr_debug("%s(), failed, fifo not empty!\n", __func__); |
1da177e4 LT |
1292 | return 0; |
1293 | } | |
1294 | ||
1295 | /* Fill FIFO with current frame */ | |
1296 | while ((fifo_size-- > 0) && (actual < len)) { | |
1297 | /* Transmit next byte */ | |
1298 | outb(buf[actual], iobase+UART_TX); | |
1299 | ||
1300 | actual++; | |
1301 | } | |
1302 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
1318 | |
1319 | IRDA_ASSERT(dev != NULL, return -1;); | |
1320 | ||
4cf1653a | 1321 | self = netdev_priv(dev); |
1da177e4 LT |
1322 | |
1323 | IRDA_ASSERT(self != NULL, return 0;); | |
1324 | ||
1325 | iobase = self->io.fir_base; | |
1326 | ||
1327 | /* Request IRQ and install Interrupt Handler */ | |
1328 | if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev)) | |
1329 | { | |
6c91023d JP |
1330 | net_warn_ratelimited("%s, unable to allocate irq=%d\n", |
1331 | ALI_IRCC_DRIVER_NAME, self->io.irq); | |
1da177e4 LT |
1332 | return -EAGAIN; |
1333 | } | |
1334 | ||
1335 | /* | |
1336 | * Always allocate the DMA channel after the IRQ, and clean up on | |
1337 | * failure. | |
1338 | */ | |
1339 | if (request_dma(self->io.dma, dev->name)) { | |
6c91023d JP |
1340 | net_warn_ratelimited("%s, unable to allocate dma=%d\n", |
1341 | ALI_IRCC_DRIVER_NAME, self->io.dma); | |
a997cbb3 | 1342 | free_irq(self->io.irq, dev); |
1da177e4 LT |
1343 | return -EAGAIN; |
1344 | } | |
1345 | ||
1346 | /* Turn on interrups */ | |
1347 | outb(UART_IER_RDI , iobase+UART_IER); | |
1348 | ||
1349 | /* Ready to play! */ | |
1350 | netif_start_queue(dev); //benjamin by irport | |
1351 | ||
1352 | /* Give self a hardware name */ | |
1353 | sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base); | |
1354 | ||
1355 | /* | |
1356 | * Open new IrLAP layer instance, now that everything should be | |
1357 | * initialized properly | |
1358 | */ | |
1359 | self->irlap = irlap_open(dev, &self->qos, hwname); | |
1360 | ||
1da177e4 LT |
1361 | |
1362 | return 0; | |
1363 | } | |
1364 | ||
1365 | /* | |
1366 | * Function ali_ircc_net_close (dev) | |
1367 | * | |
1368 | * Stop the device | |
1369 | * | |
1370 | */ | |
1371 | static int ali_ircc_net_close(struct net_device *dev) | |
1372 | { | |
1373 | ||
1374 | struct ali_ircc_cb *self; | |
1375 | //int iobase; | |
1376 | ||
1da177e4 LT |
1377 | |
1378 | IRDA_ASSERT(dev != NULL, return -1;); | |
1379 | ||
4cf1653a | 1380 | self = netdev_priv(dev); |
1da177e4 LT |
1381 | IRDA_ASSERT(self != NULL, return 0;); |
1382 | ||
1383 | /* Stop device */ | |
1384 | netif_stop_queue(dev); | |
1385 | ||
1386 | /* Stop and remove instance of IrLAP */ | |
1387 | if (self->irlap) | |
1388 | irlap_close(self->irlap); | |
1389 | self->irlap = NULL; | |
1390 | ||
1391 | disable_dma(self->io.dma); | |
1392 | ||
1393 | /* Disable interrupts */ | |
1394 | SetCOMInterrupts(self, FALSE); | |
1395 | ||
1396 | free_irq(self->io.irq, dev); | |
1397 | free_dma(self->io.dma); | |
1398 | ||
1da177e4 LT |
1399 | |
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | /* | |
1404 | * Function ali_ircc_fir_hard_xmit (skb, dev) | |
1405 | * | |
1406 | * Transmit the frame | |
1407 | * | |
1408 | */ | |
6518bbb8 SH |
1409 | static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb, |
1410 | struct net_device *dev) | |
1da177e4 LT |
1411 | { |
1412 | struct ali_ircc_cb *self; | |
1413 | unsigned long flags; | |
1414 | int iobase; | |
1415 | __u32 speed; | |
1416 | int mtt, diff; | |
1417 | ||
1da177e4 | 1418 | |
4cf1653a | 1419 | self = netdev_priv(dev); |
1da177e4 LT |
1420 | iobase = self->io.fir_base; |
1421 | ||
1422 | netif_stop_queue(dev); | |
1423 | ||
1424 | /* Make sure tests *& speed change are atomic */ | |
1425 | spin_lock_irqsave(&self->lock, flags); | |
1426 | ||
1427 | /* Note : you should make sure that speed changes are not going | |
1428 | * to corrupt any outgoing frame. Look at nsc-ircc for the gory | |
1429 | * details - Jean II */ | |
1430 | ||
1431 | /* Check if we need to change the speed */ | |
1432 | speed = irda_get_next_speed(skb); | |
1433 | if ((speed != self->io.speed) && (speed != -1)) { | |
1434 | /* Check for empty frame */ | |
1435 | if (!skb->len) { | |
1436 | ali_ircc_change_speed(self, speed); | |
1437 | dev->trans_start = jiffies; | |
1438 | spin_unlock_irqrestore(&self->lock, flags); | |
1439 | dev_kfree_skb(skb); | |
6ed10654 | 1440 | return NETDEV_TX_OK; |
1da177e4 LT |
1441 | } else |
1442 | self->new_speed = speed; | |
1443 | } | |
1444 | ||
1445 | /* Register and copy this frame to DMA memory */ | |
1446 | self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail; | |
1447 | self->tx_fifo.queue[self->tx_fifo.free].len = skb->len; | |
1448 | self->tx_fifo.tail += skb->len; | |
1449 | ||
af049081 | 1450 | dev->stats.tx_bytes += skb->len; |
1da177e4 | 1451 | |
d626f62b ACM |
1452 | skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start, |
1453 | skb->len); | |
1da177e4 LT |
1454 | self->tx_fifo.len++; |
1455 | self->tx_fifo.free++; | |
1456 | ||
1457 | /* Start transmit only if there is currently no transmit going on */ | |
1458 | if (self->tx_fifo.len == 1) | |
1459 | { | |
1460 | /* Check if we must wait the min turn time or not */ | |
1461 | mtt = irda_get_mtt(skb); | |
1462 | ||
1463 | if (mtt) | |
1464 | { | |
1465 | /* Check how much time we have used already */ | |
1466 | do_gettimeofday(&self->now); | |
1467 | ||
1468 | diff = self->now.tv_usec - self->stamp.tv_usec; | |
1469 | /* self->stamp is set from ali_ircc_dma_receive_complete() */ | |
1470 | ||
955a9d20 JP |
1471 | pr_debug("%s(), ******* diff = %d *******\n", |
1472 | __func__, diff); | |
1da177e4 LT |
1473 | |
1474 | if (diff < 0) | |
1475 | diff += 1000000; | |
1476 | ||
1477 | /* Check if the mtt is larger than the time we have | |
1478 | * already used by all the protocol processing | |
1479 | */ | |
1480 | if (mtt > diff) | |
1481 | { | |
1482 | mtt -= diff; | |
1483 | ||
1484 | /* | |
1485 | * Use timer if delay larger than 1000 us, and | |
1486 | * use udelay for smaller values which should | |
1487 | * be acceptable | |
1488 | */ | |
1489 | if (mtt > 500) | |
1490 | { | |
1491 | /* Adjust for timer resolution */ | |
1492 | mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */ | |
1493 | ||
955a9d20 JP |
1494 | pr_debug("%s(), ************** mtt = %d ***********\n", |
1495 | __func__, mtt); | |
1da177e4 LT |
1496 | |
1497 | /* Setup timer */ | |
1498 | if (mtt == 1) /* 500 us */ | |
1499 | { | |
1500 | switch_bank(iobase, BANK1); | |
1501 | outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); | |
1502 | } | |
1503 | else if (mtt == 2) /* 1 ms */ | |
1504 | { | |
1505 | switch_bank(iobase, BANK1); | |
1506 | outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR); | |
1507 | } | |
1508 | else /* > 2ms -> 4ms */ | |
1509 | { | |
1510 | switch_bank(iobase, BANK1); | |
1511 | outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR); | |
1512 | } | |
1513 | ||
1514 | ||
1515 | /* Start timer */ | |
1516 | outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); | |
1517 | self->io.direction = IO_XMIT; | |
1518 | ||
1519 | /* Enable timer interrupt */ | |
1520 | self->ier = IER_TIMER; | |
1521 | SetCOMInterrupts(self, TRUE); | |
1522 | ||
1523 | /* Timer will take care of the rest */ | |
1524 | goto out; | |
1525 | } | |
1526 | else | |
1527 | udelay(mtt); | |
1528 | } // if (if (mtt > diff) | |
1529 | }// if (mtt) | |
1530 | ||
1531 | /* Enable EOM interrupt */ | |
1532 | self->ier = IER_EOM; | |
1533 | SetCOMInterrupts(self, TRUE); | |
1534 | ||
1535 | /* Transmit frame */ | |
1536 | ali_ircc_dma_xmit(self); | |
1537 | } // if (self->tx_fifo.len == 1) | |
1538 | ||
1539 | out: | |
1540 | ||
1541 | /* Not busy transmitting anymore if window is not full */ | |
1542 | if (self->tx_fifo.free < MAX_TX_WINDOW) | |
1543 | netif_wake_queue(self->netdev); | |
1544 | ||
1545 | /* Restore bank register */ | |
1546 | switch_bank(iobase, BANK0); | |
1547 | ||
1548 | dev->trans_start = jiffies; | |
1549 | spin_unlock_irqrestore(&self->lock, flags); | |
1550 | dev_kfree_skb(skb); | |
1551 | ||
6ed10654 | 1552 | return NETDEV_TX_OK; |
1da177e4 LT |
1553 | } |
1554 | ||
1555 | ||
1556 | static void ali_ircc_dma_xmit(struct ali_ircc_cb *self) | |
1557 | { | |
1558 | int iobase, tmp; | |
1559 | unsigned char FIFO_OPTI, Hi, Lo; | |
1560 | ||
1561 | ||
1da177e4 LT |
1562 | |
1563 | iobase = self->io.fir_base; | |
1564 | ||
1565 | /* FIFO threshold , this method comes from NDIS5 code */ | |
1566 | ||
1567 | if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold) | |
1568 | FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1; | |
1569 | else | |
1570 | FIFO_OPTI = TX_FIFO_Threshold; | |
1571 | ||
1572 | /* Disable DMA */ | |
1573 | switch_bank(iobase, BANK1); | |
1574 | outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); | |
1575 | ||
1576 | self->io.direction = IO_XMIT; | |
1577 | ||
1578 | irda_setup_dma(self->io.dma, | |
1579 | ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - | |
1580 | self->tx_buff.head) + self->tx_buff_dma, | |
1581 | self->tx_fifo.queue[self->tx_fifo.ptr].len, | |
1582 | DMA_TX_MODE); | |
1583 | ||
1584 | /* Reset Tx FIFO */ | |
1585 | switch_bank(iobase, BANK0); | |
1586 | outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); | |
1587 | ||
1588 | /* Set Tx FIFO threshold */ | |
1589 | if (self->fifo_opti_buf!=FIFO_OPTI) | |
1590 | { | |
1591 | switch_bank(iobase, BANK1); | |
1592 | outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ; | |
1593 | self->fifo_opti_buf=FIFO_OPTI; | |
1594 | } | |
1595 | ||
1596 | /* Set Tx DMA threshold */ | |
1597 | switch_bank(iobase, BANK1); | |
1598 | outb(TX_DMA_Threshold, iobase+FIR_DMA_TR); | |
1599 | ||
1600 | /* Set max Tx frame size */ | |
1601 | Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f; | |
1602 | Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff; | |
1603 | switch_bank(iobase, BANK2); | |
1604 | outb(Hi, iobase+FIR_TX_DSR_HI); | |
1605 | outb(Lo, iobase+FIR_TX_DSR_LO); | |
1606 | ||
1607 | /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */ | |
1608 | switch_bank(iobase, BANK0); | |
1609 | tmp = inb(iobase+FIR_LCR_B); | |
1610 | tmp &= ~0x20; // Disable SIP | |
1611 | outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B); | |
955a9d20 JP |
1612 | pr_debug("%s(), *** Change to TX mode: FIR_LCR_B = 0x%x ***\n", |
1613 | __func__, inb(iobase + FIR_LCR_B)); | |
1da177e4 LT |
1614 | |
1615 | outb(0, iobase+FIR_LSR); | |
1616 | ||
1617 | /* Enable DMA and Burst Mode */ | |
1618 | switch_bank(iobase, BANK1); | |
1619 | outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); | |
1620 | ||
1621 | switch_bank(iobase, BANK0); | |
1622 | ||
1da177e4 LT |
1623 | } |
1624 | ||
1625 | static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self) | |
1626 | { | |
1627 | int iobase; | |
1628 | int ret = TRUE; | |
1629 | ||
1da177e4 LT |
1630 | |
1631 | iobase = self->io.fir_base; | |
1632 | ||
1633 | /* Disable DMA */ | |
1634 | switch_bank(iobase, BANK1); | |
1635 | outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); | |
1636 | ||
1637 | /* Check for underrun! */ | |
1638 | switch_bank(iobase, BANK0); | |
1639 | if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT) | |
1640 | ||
1641 | { | |
6c91023d JP |
1642 | net_err_ratelimited("%s(), ********* LSR_FRAME_ABORT *********\n", |
1643 | __func__); | |
af049081 SH |
1644 | self->netdev->stats.tx_errors++; |
1645 | self->netdev->stats.tx_fifo_errors++; | |
1da177e4 LT |
1646 | } |
1647 | else | |
1648 | { | |
af049081 | 1649 | self->netdev->stats.tx_packets++; |
1da177e4 LT |
1650 | } |
1651 | ||
1652 | /* Check if we need to change the speed */ | |
1653 | if (self->new_speed) | |
1654 | { | |
1655 | ali_ircc_change_speed(self, self->new_speed); | |
1656 | self->new_speed = 0; | |
1657 | } | |
1658 | ||
1659 | /* Finished with this frame, so prepare for next */ | |
1660 | self->tx_fifo.ptr++; | |
1661 | self->tx_fifo.len--; | |
1662 | ||
1663 | /* Any frames to be sent back-to-back? */ | |
1664 | if (self->tx_fifo.len) | |
1665 | { | |
1666 | ali_ircc_dma_xmit(self); | |
1667 | ||
1668 | /* Not finished yet! */ | |
1669 | ret = FALSE; | |
1670 | } | |
1671 | else | |
1672 | { /* Reset Tx FIFO info */ | |
1673 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; | |
1674 | self->tx_fifo.tail = self->tx_buff.head; | |
1675 | } | |
1676 | ||
1677 | /* Make sure we have room for more frames */ | |
1678 | if (self->tx_fifo.free < MAX_TX_WINDOW) { | |
1679 | /* Not busy transmitting anymore */ | |
1680 | /* Tell the network layer, that we can accept more frames */ | |
1681 | netif_wake_queue(self->netdev); | |
1682 | } | |
1683 | ||
1684 | switch_bank(iobase, BANK0); | |
1685 | ||
1da177e4 LT |
1686 | return ret; |
1687 | } | |
1688 | ||
1689 | /* | |
1690 | * Function ali_ircc_dma_receive (self) | |
1691 | * | |
1692 | * Get ready for receiving a frame. The device will initiate a DMA | |
1693 | * if it starts to receive a frame. | |
1694 | * | |
1695 | */ | |
1696 | static int ali_ircc_dma_receive(struct ali_ircc_cb *self) | |
1697 | { | |
1698 | int iobase, tmp; | |
1699 | ||
1da177e4 LT |
1700 | |
1701 | iobase = self->io.fir_base; | |
1702 | ||
1703 | /* Reset Tx FIFO info */ | |
1704 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; | |
1705 | self->tx_fifo.tail = self->tx_buff.head; | |
1706 | ||
1707 | /* Disable DMA */ | |
1708 | switch_bank(iobase, BANK1); | |
1709 | outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); | |
1710 | ||
1711 | /* Reset Message Count */ | |
1712 | switch_bank(iobase, BANK0); | |
1713 | outb(0x07, iobase+FIR_LSR); | |
1714 | ||
1715 | self->rcvFramesOverflow = FALSE; | |
1716 | ||
1717 | self->LineStatus = inb(iobase+FIR_LSR) ; | |
1718 | ||
1719 | /* Reset Rx FIFO info */ | |
1720 | self->io.direction = IO_RECV; | |
1721 | self->rx_buff.data = self->rx_buff.head; | |
1722 | ||
1723 | /* Reset Rx FIFO */ | |
1724 | // switch_bank(iobase, BANK0); | |
1725 | outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); | |
1726 | ||
1727 | self->st_fifo.len = self->st_fifo.pending_bytes = 0; | |
1728 | self->st_fifo.tail = self->st_fifo.head = 0; | |
1729 | ||
1730 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, | |
1731 | DMA_RX_MODE); | |
1732 | ||
1733 | /* Set Receive Mode,Brick Wall */ | |
1734 | //switch_bank(iobase, BANK0); | |
1735 | tmp = inb(iobase+FIR_LCR_B); | |
1736 | outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM | |
955a9d20 JP |
1737 | pr_debug("%s(), *** Change To RX mode: FIR_LCR_B = 0x%x ***\n", |
1738 | __func__, inb(iobase + FIR_LCR_B)); | |
1da177e4 LT |
1739 | |
1740 | /* Set Rx Threshold */ | |
1741 | switch_bank(iobase, BANK1); | |
1742 | outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); | |
1743 | outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); | |
1744 | ||
1745 | /* Enable DMA and Burst Mode */ | |
1746 | // switch_bank(iobase, BANK1); | |
1747 | outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); | |
1748 | ||
1749 | switch_bank(iobase, BANK0); | |
1da177e4 LT |
1750 | return 0; |
1751 | } | |
1752 | ||
1753 | static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self) | |
1754 | { | |
1755 | struct st_fifo *st_fifo; | |
1756 | struct sk_buff *skb; | |
1757 | __u8 status, MessageCount; | |
1758 | int len, i, iobase, val; | |
1759 | ||
1da177e4 LT |
1760 | st_fifo = &self->st_fifo; |
1761 | iobase = self->io.fir_base; | |
1762 | ||
1763 | switch_bank(iobase, BANK0); | |
1764 | MessageCount = inb(iobase+ FIR_LSR)&0x07; | |
1765 | ||
1766 | if (MessageCount > 0) | |
955a9d20 | 1767 | pr_debug("%s(), Message count = %d\n", __func__, MessageCount); |
1da177e4 LT |
1768 | |
1769 | for (i=0; i<=MessageCount; i++) | |
1770 | { | |
1771 | /* Bank 0 */ | |
1772 | switch_bank(iobase, BANK0); | |
1773 | status = inb(iobase+FIR_LSR); | |
1774 | ||
1775 | switch_bank(iobase, BANK2); | |
1776 | len = inb(iobase+FIR_RX_DSR_HI) & 0x0f; | |
1777 | len = len << 8; | |
1778 | len |= inb(iobase+FIR_RX_DSR_LO); | |
1779 | ||
955a9d20 JP |
1780 | pr_debug("%s(), RX Length = 0x%.2x,\n", __func__ , len); |
1781 | pr_debug("%s(), RX Status = 0x%.2x,\n", __func__ , status); | |
1da177e4 LT |
1782 | |
1783 | if (st_fifo->tail >= MAX_RX_WINDOW) { | |
955a9d20 | 1784 | pr_debug("%s(), window is full!\n", __func__); |
1da177e4 LT |
1785 | continue; |
1786 | } | |
1787 | ||
1788 | st_fifo->entries[st_fifo->tail].status = status; | |
1789 | st_fifo->entries[st_fifo->tail].len = len; | |
1790 | st_fifo->pending_bytes += len; | |
1791 | st_fifo->tail++; | |
1792 | st_fifo->len++; | |
1793 | } | |
1794 | ||
1795 | for (i=0; i<=MessageCount; i++) | |
1796 | { | |
1797 | /* Get first entry */ | |
1798 | status = st_fifo->entries[st_fifo->head].status; | |
1799 | len = st_fifo->entries[st_fifo->head].len; | |
1800 | st_fifo->pending_bytes -= len; | |
1801 | st_fifo->head++; | |
1802 | st_fifo->len--; | |
1803 | ||
1804 | /* Check for errors */ | |
1805 | if ((status & 0xd8) || self->rcvFramesOverflow || (len==0)) | |
1806 | { | |
955a9d20 JP |
1807 | pr_debug("%s(), ************* RX Errors ************\n", |
1808 | __func__); | |
1da177e4 LT |
1809 | |
1810 | /* Skip frame */ | |
af049081 | 1811 | self->netdev->stats.rx_errors++; |
1da177e4 LT |
1812 | |
1813 | self->rx_buff.data += len; | |
1814 | ||
1815 | if (status & LSR_FIFO_UR) | |
1816 | { | |
af049081 | 1817 | self->netdev->stats.rx_frame_errors++; |
955a9d20 JP |
1818 | pr_debug("%s(), ************* FIFO Errors ************\n", |
1819 | __func__); | |
1da177e4 LT |
1820 | } |
1821 | if (status & LSR_FRAME_ERROR) | |
1822 | { | |
af049081 | 1823 | self->netdev->stats.rx_frame_errors++; |
955a9d20 JP |
1824 | pr_debug("%s(), ************* FRAME Errors ************\n", |
1825 | __func__); | |
1da177e4 LT |
1826 | } |
1827 | ||
1828 | if (status & LSR_CRC_ERROR) | |
1829 | { | |
af049081 | 1830 | self->netdev->stats.rx_crc_errors++; |
955a9d20 JP |
1831 | pr_debug("%s(), ************* CRC Errors ************\n", |
1832 | __func__); | |
1da177e4 LT |
1833 | } |
1834 | ||
1835 | if(self->rcvFramesOverflow) | |
1836 | { | |
af049081 | 1837 | self->netdev->stats.rx_frame_errors++; |
955a9d20 JP |
1838 | pr_debug("%s(), ************* Overran DMA buffer ************\n", |
1839 | __func__); | |
1da177e4 LT |
1840 | } |
1841 | if(len == 0) | |
1842 | { | |
af049081 | 1843 | self->netdev->stats.rx_frame_errors++; |
955a9d20 JP |
1844 | pr_debug("%s(), ********** Receive Frame Size = 0 *********\n", |
1845 | __func__); | |
1da177e4 LT |
1846 | } |
1847 | } | |
1848 | else | |
1849 | { | |
1850 | ||
1851 | if (st_fifo->pending_bytes < 32) | |
1852 | { | |
1853 | switch_bank(iobase, BANK0); | |
1854 | val = inb(iobase+FIR_BSR); | |
1855 | if ((val& BSR_FIFO_NOT_EMPTY)== 0x80) | |
1856 | { | |
955a9d20 JP |
1857 | pr_debug("%s(), ************* BSR_FIFO_NOT_EMPTY ************\n", |
1858 | __func__); | |
1da177e4 LT |
1859 | |
1860 | /* Put this entry back in fifo */ | |
1861 | st_fifo->head--; | |
1862 | st_fifo->len++; | |
1863 | st_fifo->pending_bytes += len; | |
1864 | st_fifo->entries[st_fifo->head].status = status; | |
1865 | st_fifo->entries[st_fifo->head].len = len; | |
1866 | ||
1867 | /* | |
1868 | * DMA not finished yet, so try again | |
1869 | * later, set timer value, resolution | |
1870 | * 500 us | |
1871 | */ | |
1872 | ||
1873 | switch_bank(iobase, BANK1); | |
1874 | outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM | |
1875 | ||
1876 | /* Enable Timer */ | |
1877 | outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); | |
1878 | ||
1879 | return FALSE; /* I'll be back! */ | |
1880 | } | |
1881 | } | |
1882 | ||
1883 | /* | |
1884 | * Remember the time we received this frame, so we can | |
1885 | * reduce the min turn time a bit since we will know | |
1886 | * how much time we have used for protocol processing | |
1887 | */ | |
1888 | do_gettimeofday(&self->stamp); | |
1889 | ||
1890 | skb = dev_alloc_skb(len+1); | |
1891 | if (skb == NULL) | |
1892 | { | |
af049081 | 1893 | self->netdev->stats.rx_dropped++; |
1da177e4 LT |
1894 | |
1895 | return FALSE; | |
1896 | } | |
1897 | ||
1898 | /* Make sure IP header gets aligned */ | |
1899 | skb_reserve(skb, 1); | |
1900 | ||
1901 | /* Copy frame without CRC, CRC is removed by hardware*/ | |
1902 | skb_put(skb, len); | |
27d7ff46 | 1903 | skb_copy_to_linear_data(skb, self->rx_buff.data, len); |
1da177e4 LT |
1904 | |
1905 | /* Move to next frame */ | |
1906 | self->rx_buff.data += len; | |
af049081 SH |
1907 | self->netdev->stats.rx_bytes += len; |
1908 | self->netdev->stats.rx_packets++; | |
1da177e4 LT |
1909 | |
1910 | skb->dev = self->netdev; | |
459a98ed | 1911 | skb_reset_mac_header(skb); |
1da177e4 LT |
1912 | skb->protocol = htons(ETH_P_IRDA); |
1913 | netif_rx(skb); | |
1da177e4 LT |
1914 | } |
1915 | } | |
1916 | ||
1917 | switch_bank(iobase, BANK0); | |
1918 | ||
1da177e4 LT |
1919 | return TRUE; |
1920 | } | |
1921 | ||
1922 | ||
1923 | ||
1924 | /* | |
1925 | * Function ali_ircc_sir_hard_xmit (skb, dev) | |
1926 | * | |
1927 | * Transmit the frame! | |
1928 | * | |
1929 | */ | |
6518bbb8 SH |
1930 | static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb, |
1931 | struct net_device *dev) | |
1da177e4 LT |
1932 | { |
1933 | struct ali_ircc_cb *self; | |
1934 | unsigned long flags; | |
1935 | int iobase; | |
1936 | __u32 speed; | |
1937 | ||
1da177e4 | 1938 | |
ec634fe3 | 1939 | IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;); |
1da177e4 | 1940 | |
4cf1653a | 1941 | self = netdev_priv(dev); |
ec634fe3 | 1942 | IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;); |
1da177e4 LT |
1943 | |
1944 | iobase = self->io.sir_base; | |
1945 | ||
1946 | netif_stop_queue(dev); | |
1947 | ||
1948 | /* Make sure tests *& speed change are atomic */ | |
1949 | spin_lock_irqsave(&self->lock, flags); | |
1950 | ||
1951 | /* Note : you should make sure that speed changes are not going | |
1952 | * to corrupt any outgoing frame. Look at nsc-ircc for the gory | |
1953 | * details - Jean II */ | |
1954 | ||
1955 | /* Check if we need to change the speed */ | |
1956 | speed = irda_get_next_speed(skb); | |
1957 | if ((speed != self->io.speed) && (speed != -1)) { | |
1958 | /* Check for empty frame */ | |
1959 | if (!skb->len) { | |
1960 | ali_ircc_change_speed(self, speed); | |
1961 | dev->trans_start = jiffies; | |
1962 | spin_unlock_irqrestore(&self->lock, flags); | |
1963 | dev_kfree_skb(skb); | |
6ed10654 | 1964 | return NETDEV_TX_OK; |
1da177e4 LT |
1965 | } else |
1966 | self->new_speed = speed; | |
1967 | } | |
1968 | ||
1969 | /* Init tx buffer */ | |
1970 | self->tx_buff.data = self->tx_buff.head; | |
1971 | ||
1972 | /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ | |
1973 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, | |
1974 | self->tx_buff.truesize); | |
1975 | ||
af049081 | 1976 | self->netdev->stats.tx_bytes += self->tx_buff.len; |
1da177e4 LT |
1977 | |
1978 | /* Turn on transmit finished interrupt. Will fire immediately! */ | |
1979 | outb(UART_IER_THRI, iobase+UART_IER); | |
1980 | ||
1981 | dev->trans_start = jiffies; | |
1982 | spin_unlock_irqrestore(&self->lock, flags); | |
1983 | ||
1984 | dev_kfree_skb(skb); | |
1985 | ||
1da177e4 | 1986 | |
6ed10654 | 1987 | return NETDEV_TX_OK; |
1da177e4 LT |
1988 | } |
1989 | ||
1990 | ||
1991 | /* | |
1992 | * Function ali_ircc_net_ioctl (dev, rq, cmd) | |
1993 | * | |
1994 | * Process IOCTL commands for this device | |
1995 | * | |
1996 | */ | |
1997 | static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1998 | { | |
1999 | struct if_irda_req *irq = (struct if_irda_req *) rq; | |
2000 | struct ali_ircc_cb *self; | |
2001 | unsigned long flags; | |
2002 | int ret = 0; | |
2003 | ||
1da177e4 LT |
2004 | |
2005 | IRDA_ASSERT(dev != NULL, return -1;); | |
2006 | ||
4cf1653a | 2007 | self = netdev_priv(dev); |
1da177e4 LT |
2008 | |
2009 | IRDA_ASSERT(self != NULL, return -1;); | |
2010 | ||
955a9d20 | 2011 | pr_debug("%s(), %s, (cmd=0x%X)\n", __func__ , dev->name, cmd); |
1da177e4 LT |
2012 | |
2013 | switch (cmd) { | |
2014 | case SIOCSBANDWIDTH: /* Set bandwidth */ | |
955a9d20 | 2015 | pr_debug("%s(), SIOCSBANDWIDTH\n", __func__); |
1da177e4 LT |
2016 | /* |
2017 | * This function will also be used by IrLAP to change the | |
2018 | * speed, so we still must allow for speed change within | |
2019 | * interrupt context. | |
2020 | */ | |
2021 | if (!in_interrupt() && !capable(CAP_NET_ADMIN)) | |
2022 | return -EPERM; | |
2023 | ||
2024 | spin_lock_irqsave(&self->lock, flags); | |
2025 | ali_ircc_change_speed(self, irq->ifr_baudrate); | |
2026 | spin_unlock_irqrestore(&self->lock, flags); | |
2027 | break; | |
2028 | case SIOCSMEDIABUSY: /* Set media busy */ | |
955a9d20 | 2029 | pr_debug("%s(), SIOCSMEDIABUSY\n", __func__); |
1da177e4 LT |
2030 | if (!capable(CAP_NET_ADMIN)) |
2031 | return -EPERM; | |
2032 | irda_device_set_media_busy(self->netdev, TRUE); | |
2033 | break; | |
2034 | case SIOCGRECEIVING: /* Check if we are receiving right now */ | |
955a9d20 | 2035 | pr_debug("%s(), SIOCGRECEIVING\n", __func__); |
1da177e4 LT |
2036 | /* This is protected */ |
2037 | irq->ifr_receiving = ali_ircc_is_receiving(self); | |
2038 | break; | |
2039 | default: | |
2040 | ret = -EOPNOTSUPP; | |
2041 | } | |
2042 | ||
1da177e4 LT |
2043 | |
2044 | return ret; | |
2045 | } | |
2046 | ||
2047 | /* | |
2048 | * Function ali_ircc_is_receiving (self) | |
2049 | * | |
2050 | * Return TRUE is we are currently receiving a frame | |
2051 | * | |
2052 | */ | |
2053 | static int ali_ircc_is_receiving(struct ali_ircc_cb *self) | |
2054 | { | |
2055 | unsigned long flags; | |
2056 | int status = FALSE; | |
2057 | int iobase; | |
2058 | ||
1da177e4 LT |
2059 | |
2060 | IRDA_ASSERT(self != NULL, return FALSE;); | |
2061 | ||
2062 | spin_lock_irqsave(&self->lock, flags); | |
2063 | ||
2064 | if (self->io.speed > 115200) | |
2065 | { | |
2066 | iobase = self->io.fir_base; | |
2067 | ||
2068 | switch_bank(iobase, BANK1); | |
2069 | if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0) | |
2070 | { | |
2071 | /* We are receiving something */ | |
955a9d20 JP |
2072 | pr_debug("%s(), We are receiving something\n", |
2073 | __func__); | |
1da177e4 LT |
2074 | status = TRUE; |
2075 | } | |
2076 | switch_bank(iobase, BANK0); | |
2077 | } | |
2078 | else | |
2079 | { | |
2080 | status = (self->rx_buff.state != OUTSIDE_FRAME); | |
2081 | } | |
2082 | ||
2083 | spin_unlock_irqrestore(&self->lock, flags); | |
2084 | ||
1da177e4 LT |
2085 | |
2086 | return status; | |
2087 | } | |
2088 | ||
898b1d16 | 2089 | static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state) |
1da177e4 | 2090 | { |
898b1d16 | 2091 | struct ali_ircc_cb *self = platform_get_drvdata(dev); |
1da177e4 | 2092 | |
6c91023d | 2093 | net_info_ratelimited("%s, Suspending\n", ALI_IRCC_DRIVER_NAME); |
1da177e4 LT |
2094 | |
2095 | if (self->io.suspended) | |
898b1d16 | 2096 | return 0; |
1da177e4 LT |
2097 | |
2098 | ali_ircc_net_close(self->netdev); | |
2099 | ||
2100 | self->io.suspended = 1; | |
2101 | ||
898b1d16 | 2102 | return 0; |
1da177e4 LT |
2103 | } |
2104 | ||
898b1d16 | 2105 | static int ali_ircc_resume(struct platform_device *dev) |
1da177e4 | 2106 | { |
898b1d16 | 2107 | struct ali_ircc_cb *self = platform_get_drvdata(dev); |
1da177e4 LT |
2108 | |
2109 | if (!self->io.suspended) | |
898b1d16 | 2110 | return 0; |
1da177e4 LT |
2111 | |
2112 | ali_ircc_net_open(self->netdev); | |
2113 | ||
6c91023d | 2114 | net_info_ratelimited("%s, Waking up\n", ALI_IRCC_DRIVER_NAME); |
1da177e4 LT |
2115 | |
2116 | self->io.suspended = 0; | |
1da177e4 | 2117 | |
1da177e4 LT |
2118 | return 0; |
2119 | } | |
2120 | ||
1da177e4 LT |
2121 | /* ALi Chip Function */ |
2122 | ||
2123 | static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable) | |
2124 | { | |
2125 | ||
2126 | unsigned char newMask; | |
2127 | ||
2128 | int iobase = self->io.fir_base; /* or sir_base */ | |
2129 | ||
955a9d20 JP |
2130 | pr_debug("%s(), -------- Start -------- ( Enable = %d )\n", |
2131 | __func__, enable); | |
1da177e4 LT |
2132 | |
2133 | /* Enable the interrupt which we wish to */ | |
2134 | if (enable){ | |
2135 | if (self->io.direction == IO_XMIT) | |
2136 | { | |
2137 | if (self->io.speed > 115200) /* FIR, MIR */ | |
2138 | { | |
2139 | newMask = self->ier; | |
2140 | } | |
2141 | else /* SIR */ | |
2142 | { | |
2143 | newMask = UART_IER_THRI | UART_IER_RDI; | |
2144 | } | |
2145 | } | |
2146 | else { | |
2147 | if (self->io.speed > 115200) /* FIR, MIR */ | |
2148 | { | |
2149 | newMask = self->ier; | |
2150 | } | |
2151 | else /* SIR */ | |
2152 | { | |
2153 | newMask = UART_IER_RDI; | |
2154 | } | |
2155 | } | |
2156 | } | |
2157 | else /* Disable all the interrupts */ | |
2158 | { | |
2159 | newMask = 0x00; | |
2160 | ||
2161 | } | |
2162 | ||
2163 | //SIR and FIR has different registers | |
2164 | if (self->io.speed > 115200) | |
2165 | { | |
2166 | switch_bank(iobase, BANK0); | |
2167 | outb(newMask, iobase+FIR_IER); | |
2168 | } | |
2169 | else | |
2170 | outb(newMask, iobase+UART_IER); | |
2171 | ||
1da177e4 LT |
2172 | } |
2173 | ||
2174 | static void SIR2FIR(int iobase) | |
2175 | { | |
2176 | //unsigned char tmp; | |
2177 | ||
1da177e4 LT |
2178 | |
2179 | /* Already protected (change_speed() or setup()), no need to lock. | |
2180 | * Jean II */ | |
2181 | ||
2182 | outb(0x28, iobase+UART_MCR); | |
2183 | outb(0x68, iobase+UART_MCR); | |
2184 | outb(0x88, iobase+UART_MCR); | |
2185 | ||
2186 | outb(0x60, iobase+FIR_MCR); /* Master Reset */ | |
2187 | outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */ | |
2188 | ||
2189 | //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */ | |
2190 | //tmp |= 0x20; | |
2191 | //outb(tmp, iobase+FIR_LCR_B); | |
2192 | ||
1da177e4 LT |
2193 | } |
2194 | ||
2195 | static void FIR2SIR(int iobase) | |
2196 | { | |
2197 | unsigned char val; | |
2198 | ||
1da177e4 LT |
2199 | |
2200 | /* Already protected (change_speed() or setup()), no need to lock. | |
2201 | * Jean II */ | |
2202 | ||
2203 | outb(0x20, iobase+FIR_MCR); /* IRQ to low */ | |
2204 | outb(0x00, iobase+UART_IER); | |
2205 | ||
2206 | outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */ | |
2207 | outb(0x00, iobase+UART_FCR); | |
2208 | outb(0x07, iobase+UART_FCR); | |
2209 | ||
2210 | val = inb(iobase+UART_RX); | |
2211 | val = inb(iobase+UART_LSR); | |
2212 | val = inb(iobase+UART_MSR); | |
2213 | ||
1da177e4 LT |
2214 | } |
2215 | ||
2216 | MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>"); | |
2217 | MODULE_DESCRIPTION("ALi FIR Controller Driver"); | |
2218 | MODULE_LICENSE("GPL"); | |
72abb461 | 2219 | MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME); |
1da177e4 LT |
2220 | |
2221 | ||
2222 | module_param_array(io, int, NULL, 0); | |
2223 | MODULE_PARM_DESC(io, "Base I/O addresses"); | |
2224 | module_param_array(irq, int, NULL, 0); | |
2225 | MODULE_PARM_DESC(irq, "IRQ lines"); | |
2226 | module_param_array(dma, int, NULL, 0); | |
2227 | MODULE_PARM_DESC(dma, "DMA channels"); | |
2228 | ||
2229 | module_init(ali_ircc_init); | |
2230 | module_exit(ali_ircc_cleanup); |