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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Driver for the media bay on the PowerBook 3400 and 2400. | |
3 | * | |
4 | * Copyright (C) 1998 Paul Mackerras. | |
5 | * | |
6 | * Various evolutions by Benjamin Herrenschmidt & Henry Worth | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * as published by the Free Software Foundation; either version | |
11 | * 2 of the License, or (at your option) any later version. | |
12 | */ | |
1da177e4 LT |
13 | #include <linux/types.h> |
14 | #include <linux/errno.h> | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/sched.h> | |
18 | #include <linux/timer.h> | |
19 | #include <linux/hdreg.h> | |
20 | #include <linux/stddef.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/ide.h> | |
33f6e794 | 23 | #include <linux/kthread.h> |
1da177e4 LT |
24 | #include <asm/prom.h> |
25 | #include <asm/pgtable.h> | |
26 | #include <asm/io.h> | |
27 | #include <asm/machdep.h> | |
28 | #include <asm/pmac_feature.h> | |
29 | #include <asm/mediabay.h> | |
30 | #include <asm/sections.h> | |
31 | #include <asm/ohare.h> | |
32 | #include <asm/heathrow.h> | |
33 | #include <asm/keylargo.h> | |
34 | #include <linux/adb.h> | |
35 | #include <linux/pmu.h> | |
36 | ||
37 | ||
38 | #define MB_DEBUG | |
1da177e4 LT |
39 | |
40 | #ifdef MB_DEBUG | |
41 | #define MBDBG(fmt, arg...) printk(KERN_INFO fmt , ## arg) | |
42 | #else | |
43 | #define MBDBG(fmt, arg...) do { } while (0) | |
44 | #endif | |
45 | ||
46 | #define MB_FCR32(bay, r) ((bay)->base + ((r) >> 2)) | |
47 | #define MB_FCR8(bay, r) (((volatile u8 __iomem *)((bay)->base)) + (r)) | |
48 | ||
49 | #define MB_IN32(bay,r) (in_le32(MB_FCR32(bay,r))) | |
50 | #define MB_OUT32(bay,r,v) (out_le32(MB_FCR32(bay,r), (v))) | |
51 | #define MB_BIS(bay,r,v) (MB_OUT32((bay), (r), MB_IN32((bay), r) | (v))) | |
52 | #define MB_BIC(bay,r,v) (MB_OUT32((bay), (r), MB_IN32((bay), r) & ~(v))) | |
53 | #define MB_IN8(bay,r) (in_8(MB_FCR8(bay,r))) | |
54 | #define MB_OUT8(bay,r,v) (out_8(MB_FCR8(bay,r), (v))) | |
55 | ||
56 | struct media_bay_info; | |
57 | ||
58 | struct mb_ops { | |
59 | char* name; | |
60 | void (*init)(struct media_bay_info *bay); | |
61 | u8 (*content)(struct media_bay_info *bay); | |
62 | void (*power)(struct media_bay_info *bay, int on_off); | |
63 | int (*setup_bus)(struct media_bay_info *bay, u8 device_id); | |
64 | void (*un_reset)(struct media_bay_info *bay); | |
65 | void (*un_reset_ide)(struct media_bay_info *bay); | |
66 | }; | |
67 | ||
68 | struct media_bay_info { | |
69 | u32 __iomem *base; | |
70 | int content_id; | |
71 | int state; | |
72 | int last_value; | |
73 | int value_count; | |
74 | int timer; | |
75 | struct macio_dev *mdev; | |
76 | struct mb_ops* ops; | |
77 | int index; | |
78 | int cached_gpio; | |
79 | int sleeping; | |
80 | struct semaphore lock; | |
34394e45 | 81 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 | 82 | void __iomem *cd_base; |
1da177e4 LT |
83 | int cd_irq; |
84 | int cd_retry; | |
85 | #endif | |
34394e45 BZ |
86 | #if defined(CONFIG_BLK_DEV_IDE_PMAC) || defined(CONFIG_MAC_FLOPPY) |
87 | int cd_index; | |
88 | #endif | |
1da177e4 LT |
89 | }; |
90 | ||
91 | #define MAX_BAYS 2 | |
92 | ||
93 | static struct media_bay_info media_bays[MAX_BAYS]; | |
94 | int media_bay_count = 0; | |
95 | ||
34394e45 | 96 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
97 | /* check the busy bit in the media-bay ide interface |
98 | (assumes the media-bay contains an ide device) */ | |
99 | #define MB_IDE_READY(i) ((readb(media_bays[i].cd_base + 0x70) & 0x80) == 0) | |
100 | #endif | |
101 | ||
102 | /* | |
103 | * Wait that number of ms between each step in normal polling mode | |
104 | */ | |
105 | #define MB_POLL_DELAY 25 | |
106 | ||
107 | /* | |
108 | * Consider the media-bay ID value stable if it is the same for | |
109 | * this number of milliseconds | |
110 | */ | |
111 | #define MB_STABLE_DELAY 100 | |
112 | ||
113 | /* Wait after powering up the media bay this delay in ms | |
114 | * timeout bumped for some powerbooks | |
115 | */ | |
116 | #define MB_POWER_DELAY 200 | |
117 | ||
118 | /* | |
119 | * Hold the media-bay reset signal true for this many ticks | |
120 | * after a device is inserted before releasing it. | |
121 | */ | |
122 | #define MB_RESET_DELAY 50 | |
123 | ||
124 | /* | |
125 | * Wait this long after the reset signal is released and before doing | |
126 | * further operations. After this delay, the IDE reset signal is released | |
127 | * too for an IDE device | |
128 | */ | |
129 | #define MB_SETUP_DELAY 100 | |
130 | ||
131 | /* | |
132 | * Wait this many ticks after an IDE device (e.g. CD-ROM) is inserted | |
133 | * (or until the device is ready) before waiting for busy bit to disappear | |
134 | */ | |
135 | #define MB_IDE_WAIT 1000 | |
136 | ||
137 | /* | |
138 | * Timeout waiting for busy bit of an IDE device to go down | |
139 | */ | |
140 | #define MB_IDE_TIMEOUT 5000 | |
141 | ||
142 | /* | |
143 | * Max retries of the full power up/down sequence for an IDE device | |
144 | */ | |
145 | #define MAX_CD_RETRIES 3 | |
146 | ||
147 | /* | |
148 | * States of a media bay | |
149 | */ | |
150 | enum { | |
151 | mb_empty = 0, /* Idle */ | |
152 | mb_powering_up, /* power bit set, waiting MB_POWER_DELAY */ | |
153 | mb_enabling_bay, /* enable bits set, waiting MB_RESET_DELAY */ | |
154 | mb_resetting, /* reset bit unset, waiting MB_SETUP_DELAY */ | |
155 | mb_ide_resetting, /* IDE reset bit unser, waiting MB_IDE_WAIT */ | |
156 | mb_ide_waiting, /* Waiting for BUSY bit to go away until MB_IDE_TIMEOUT */ | |
157 | mb_up, /* Media bay full */ | |
158 | mb_powering_down /* Powering down (avoid too fast down/up) */ | |
159 | }; | |
160 | ||
161 | #define MB_POWER_SOUND 0x08 | |
162 | #define MB_POWER_FLOPPY 0x04 | |
163 | #define MB_POWER_ATA 0x02 | |
164 | #define MB_POWER_PCI 0x01 | |
165 | #define MB_POWER_OFF 0x00 | |
166 | ||
167 | /* | |
168 | * Functions for polling content of media bay | |
169 | */ | |
170 | ||
aacaf9bd | 171 | static u8 |
1da177e4 LT |
172 | ohare_mb_content(struct media_bay_info *bay) |
173 | { | |
174 | return (MB_IN32(bay, OHARE_MBCR) >> 12) & 7; | |
175 | } | |
176 | ||
aacaf9bd | 177 | static u8 |
1da177e4 LT |
178 | heathrow_mb_content(struct media_bay_info *bay) |
179 | { | |
180 | return (MB_IN32(bay, HEATHROW_MBCR) >> 12) & 7; | |
181 | } | |
182 | ||
aacaf9bd | 183 | static u8 |
1da177e4 LT |
184 | keylargo_mb_content(struct media_bay_info *bay) |
185 | { | |
186 | int new_gpio; | |
187 | ||
188 | new_gpio = MB_IN8(bay, KL_GPIO_MEDIABAY_IRQ) & KEYLARGO_GPIO_INPUT_DATA; | |
189 | if (new_gpio) { | |
190 | bay->cached_gpio = new_gpio; | |
191 | return MB_NO; | |
192 | } else if (bay->cached_gpio != new_gpio) { | |
193 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_ENABLE); | |
194 | (void)MB_IN32(bay, KEYLARGO_MBCR); | |
195 | udelay(5); | |
196 | MB_BIC(bay, KEYLARGO_MBCR, 0x0000000F); | |
197 | (void)MB_IN32(bay, KEYLARGO_MBCR); | |
198 | udelay(5); | |
199 | bay->cached_gpio = new_gpio; | |
200 | } | |
201 | return (MB_IN32(bay, KEYLARGO_MBCR) >> 4) & 7; | |
202 | } | |
203 | ||
204 | /* | |
205 | * Functions for powering up/down the bay, puts the bay device | |
206 | * into reset state as well | |
207 | */ | |
208 | ||
aacaf9bd | 209 | static void |
1da177e4 LT |
210 | ohare_mb_power(struct media_bay_info* bay, int on_off) |
211 | { | |
212 | if (on_off) { | |
213 | /* Power up device, assert it's reset line */ | |
214 | MB_BIC(bay, OHARE_FCR, OH_BAY_RESET_N); | |
215 | MB_BIC(bay, OHARE_FCR, OH_BAY_POWER_N); | |
216 | } else { | |
217 | /* Disable all devices */ | |
218 | MB_BIC(bay, OHARE_FCR, OH_BAY_DEV_MASK); | |
219 | MB_BIC(bay, OHARE_FCR, OH_FLOPPY_ENABLE); | |
220 | /* Cut power from bay, release reset line */ | |
221 | MB_BIS(bay, OHARE_FCR, OH_BAY_POWER_N); | |
222 | MB_BIS(bay, OHARE_FCR, OH_BAY_RESET_N); | |
223 | MB_BIS(bay, OHARE_FCR, OH_IDE1_RESET_N); | |
224 | } | |
225 | MB_BIC(bay, OHARE_MBCR, 0x00000F00); | |
226 | } | |
227 | ||
aacaf9bd | 228 | static void |
1da177e4 LT |
229 | heathrow_mb_power(struct media_bay_info* bay, int on_off) |
230 | { | |
231 | if (on_off) { | |
232 | /* Power up device, assert it's reset line */ | |
233 | MB_BIC(bay, HEATHROW_FCR, HRW_BAY_RESET_N); | |
234 | MB_BIC(bay, HEATHROW_FCR, HRW_BAY_POWER_N); | |
235 | } else { | |
236 | /* Disable all devices */ | |
237 | MB_BIC(bay, HEATHROW_FCR, HRW_BAY_DEV_MASK); | |
238 | MB_BIC(bay, HEATHROW_FCR, HRW_SWIM_ENABLE); | |
239 | /* Cut power from bay, release reset line */ | |
240 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_POWER_N); | |
241 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_RESET_N); | |
242 | MB_BIS(bay, HEATHROW_FCR, HRW_IDE1_RESET_N); | |
243 | } | |
244 | MB_BIC(bay, HEATHROW_MBCR, 0x00000F00); | |
245 | } | |
246 | ||
aacaf9bd | 247 | static void |
1da177e4 LT |
248 | keylargo_mb_power(struct media_bay_info* bay, int on_off) |
249 | { | |
250 | if (on_off) { | |
251 | /* Power up device, assert it's reset line */ | |
252 | MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET); | |
253 | MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_POWER); | |
254 | } else { | |
255 | /* Disable all devices */ | |
256 | MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_MASK); | |
257 | MB_BIC(bay, KEYLARGO_FCR1, KL1_EIDE0_ENABLE); | |
258 | /* Cut power from bay, release reset line */ | |
259 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_POWER); | |
260 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET); | |
261 | MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N); | |
262 | } | |
263 | MB_BIC(bay, KEYLARGO_MBCR, 0x0000000F); | |
264 | } | |
265 | ||
266 | /* | |
267 | * Functions for configuring the media bay for a given type of device, | |
268 | * enable the related busses | |
269 | */ | |
270 | ||
aacaf9bd | 271 | static int |
1da177e4 LT |
272 | ohare_mb_setup_bus(struct media_bay_info* bay, u8 device_id) |
273 | { | |
274 | switch(device_id) { | |
275 | case MB_FD: | |
276 | case MB_FD1: | |
277 | MB_BIS(bay, OHARE_FCR, OH_BAY_FLOPPY_ENABLE); | |
278 | MB_BIS(bay, OHARE_FCR, OH_FLOPPY_ENABLE); | |
279 | return 0; | |
280 | case MB_CD: | |
281 | MB_BIC(bay, OHARE_FCR, OH_IDE1_RESET_N); | |
282 | MB_BIS(bay, OHARE_FCR, OH_BAY_IDE_ENABLE); | |
283 | return 0; | |
284 | case MB_PCI: | |
285 | MB_BIS(bay, OHARE_FCR, OH_BAY_PCI_ENABLE); | |
286 | return 0; | |
287 | } | |
288 | return -ENODEV; | |
289 | } | |
290 | ||
aacaf9bd | 291 | static int |
1da177e4 LT |
292 | heathrow_mb_setup_bus(struct media_bay_info* bay, u8 device_id) |
293 | { | |
294 | switch(device_id) { | |
295 | case MB_FD: | |
296 | case MB_FD1: | |
297 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_FLOPPY_ENABLE); | |
298 | MB_BIS(bay, HEATHROW_FCR, HRW_SWIM_ENABLE); | |
299 | return 0; | |
300 | case MB_CD: | |
301 | MB_BIC(bay, HEATHROW_FCR, HRW_IDE1_RESET_N); | |
302 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_IDE_ENABLE); | |
303 | return 0; | |
304 | case MB_PCI: | |
305 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_PCI_ENABLE); | |
306 | return 0; | |
307 | } | |
308 | return -ENODEV; | |
309 | } | |
310 | ||
aacaf9bd | 311 | static int |
1da177e4 LT |
312 | keylargo_mb_setup_bus(struct media_bay_info* bay, u8 device_id) |
313 | { | |
314 | switch(device_id) { | |
315 | case MB_CD: | |
316 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_IDE_ENABLE); | |
317 | MB_BIC(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N); | |
318 | MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_ENABLE); | |
319 | return 0; | |
320 | case MB_PCI: | |
321 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_PCI_ENABLE); | |
322 | return 0; | |
323 | case MB_SOUND: | |
324 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_SOUND_ENABLE); | |
325 | return 0; | |
326 | } | |
327 | return -ENODEV; | |
328 | } | |
329 | ||
330 | /* | |
331 | * Functions for tweaking resets | |
332 | */ | |
333 | ||
aacaf9bd | 334 | static void |
1da177e4 LT |
335 | ohare_mb_un_reset(struct media_bay_info* bay) |
336 | { | |
337 | MB_BIS(bay, OHARE_FCR, OH_BAY_RESET_N); | |
338 | } | |
339 | ||
aacaf9bd | 340 | static void keylargo_mb_init(struct media_bay_info *bay) |
1da177e4 LT |
341 | { |
342 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_ENABLE); | |
343 | } | |
344 | ||
aacaf9bd | 345 | static void heathrow_mb_un_reset(struct media_bay_info* bay) |
1da177e4 LT |
346 | { |
347 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_RESET_N); | |
348 | } | |
349 | ||
aacaf9bd | 350 | static void keylargo_mb_un_reset(struct media_bay_info* bay) |
1da177e4 LT |
351 | { |
352 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET); | |
353 | } | |
354 | ||
aacaf9bd | 355 | static void ohare_mb_un_reset_ide(struct media_bay_info* bay) |
1da177e4 LT |
356 | { |
357 | MB_BIS(bay, OHARE_FCR, OH_IDE1_RESET_N); | |
358 | } | |
359 | ||
aacaf9bd | 360 | static void heathrow_mb_un_reset_ide(struct media_bay_info* bay) |
1da177e4 LT |
361 | { |
362 | MB_BIS(bay, HEATHROW_FCR, HRW_IDE1_RESET_N); | |
363 | } | |
364 | ||
aacaf9bd | 365 | static void keylargo_mb_un_reset_ide(struct media_bay_info* bay) |
1da177e4 LT |
366 | { |
367 | MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N); | |
368 | } | |
369 | ||
aacaf9bd | 370 | static inline void set_mb_power(struct media_bay_info* bay, int onoff) |
1da177e4 LT |
371 | { |
372 | /* Power up up and assert the bay reset line */ | |
373 | if (onoff) { | |
374 | bay->ops->power(bay, 1); | |
375 | bay->state = mb_powering_up; | |
376 | MBDBG("mediabay%d: powering up\n", bay->index); | |
377 | } else { | |
378 | /* Make sure everything is powered down & disabled */ | |
379 | bay->ops->power(bay, 0); | |
380 | bay->state = mb_powering_down; | |
381 | MBDBG("mediabay%d: powering down\n", bay->index); | |
382 | } | |
383 | bay->timer = msecs_to_jiffies(MB_POWER_DELAY); | |
384 | } | |
385 | ||
aacaf9bd | 386 | static void poll_media_bay(struct media_bay_info* bay) |
1da177e4 LT |
387 | { |
388 | int id = bay->ops->content(bay); | |
389 | ||
390 | if (id == bay->last_value) { | |
391 | if (id != bay->content_id) { | |
392 | bay->value_count += msecs_to_jiffies(MB_POLL_DELAY); | |
393 | if (bay->value_count >= msecs_to_jiffies(MB_STABLE_DELAY)) { | |
394 | /* If the device type changes without going thru | |
395 | * "MB_NO", we force a pass by "MB_NO" to make sure | |
396 | * things are properly reset | |
397 | */ | |
398 | if ((id != MB_NO) && (bay->content_id != MB_NO)) { | |
399 | id = MB_NO; | |
400 | MBDBG("mediabay%d: forcing MB_NO\n", bay->index); | |
401 | } | |
402 | MBDBG("mediabay%d: switching to %d\n", bay->index, id); | |
403 | set_mb_power(bay, id != MB_NO); | |
404 | bay->content_id = id; | |
405 | if (id == MB_NO) { | |
34394e45 | 406 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
407 | bay->cd_retry = 0; |
408 | #endif | |
409 | printk(KERN_INFO "media bay %d is empty\n", bay->index); | |
410 | } | |
411 | } | |
412 | } | |
413 | } else { | |
414 | bay->last_value = id; | |
415 | bay->value_count = 0; | |
416 | } | |
417 | } | |
418 | ||
aacaf9bd | 419 | int check_media_bay(struct device_node *which_bay, int what) |
1da177e4 | 420 | { |
1da177e4 LT |
421 | int i; |
422 | ||
423 | for (i=0; i<media_bay_count; i++) | |
424 | if (media_bays[i].mdev && which_bay == media_bays[i].mdev->ofdev.node) { | |
425 | if ((what == media_bays[i].content_id) && media_bays[i].state == mb_up) | |
426 | return 0; | |
427 | media_bays[i].cd_index = -1; | |
428 | return -EINVAL; | |
429 | } | |
1da177e4 LT |
430 | return -ENODEV; |
431 | } | |
432 | EXPORT_SYMBOL(check_media_bay); | |
433 | ||
34394e45 | 434 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
aacaf9bd | 435 | int check_media_bay_by_base(unsigned long base, int what) |
1da177e4 | 436 | { |
1da177e4 LT |
437 | int i; |
438 | ||
439 | for (i=0; i<media_bay_count; i++) | |
440 | if (media_bays[i].mdev && base == (unsigned long) media_bays[i].cd_base) { | |
441 | if ((what == media_bays[i].content_id) && media_bays[i].state == mb_up) | |
442 | return 0; | |
443 | media_bays[i].cd_index = -1; | |
444 | return -EINVAL; | |
445 | } | |
34394e45 | 446 | |
1da177e4 LT |
447 | return -ENODEV; |
448 | } | |
449 | ||
aacaf9bd | 450 | int media_bay_set_ide_infos(struct device_node* which_bay, unsigned long base, |
34394e45 | 451 | int irq, int index) |
1da177e4 | 452 | { |
1da177e4 LT |
453 | int i; |
454 | ||
455 | for (i=0; i<media_bay_count; i++) { | |
456 | struct media_bay_info* bay = &media_bays[i]; | |
457 | ||
458 | if (bay->mdev && which_bay == bay->mdev->ofdev.node) { | |
459 | int timeout = 5000; | |
460 | ||
461 | down(&bay->lock); | |
462 | ||
463 | bay->cd_base = (void __iomem *) base; | |
464 | bay->cd_irq = irq; | |
465 | ||
466 | if ((MB_CD != bay->content_id) || bay->state != mb_up) { | |
467 | up(&bay->lock); | |
468 | return 0; | |
469 | } | |
470 | printk(KERN_DEBUG "Registered ide%d for media bay %d\n", index, i); | |
471 | do { | |
472 | if (MB_IDE_READY(i)) { | |
473 | bay->cd_index = index; | |
474 | up(&bay->lock); | |
475 | return 0; | |
476 | } | |
477 | mdelay(1); | |
478 | } while(--timeout); | |
479 | printk(KERN_DEBUG "Timeount waiting IDE in bay %d\n", i); | |
480 | up(&bay->lock); | |
481 | return -ENODEV; | |
482 | } | |
483 | } | |
34394e45 | 484 | |
1da177e4 LT |
485 | return -ENODEV; |
486 | } | |
34394e45 | 487 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
1da177e4 | 488 | |
aacaf9bd | 489 | static void media_bay_step(int i) |
1da177e4 LT |
490 | { |
491 | struct media_bay_info* bay = &media_bays[i]; | |
492 | ||
493 | /* We don't poll when powering down */ | |
494 | if (bay->state != mb_powering_down) | |
495 | poll_media_bay(bay); | |
496 | ||
497 | /* If timer expired or polling IDE busy, run state machine */ | |
498 | if ((bay->state != mb_ide_waiting) && (bay->timer != 0)) { | |
499 | bay->timer -= msecs_to_jiffies(MB_POLL_DELAY); | |
500 | if (bay->timer > 0) | |
501 | return; | |
502 | bay->timer = 0; | |
503 | } | |
504 | ||
505 | switch(bay->state) { | |
506 | case mb_powering_up: | |
507 | if (bay->ops->setup_bus(bay, bay->last_value) < 0) { | |
508 | MBDBG("mediabay%d: device not supported (kind:%d)\n", i, bay->content_id); | |
509 | set_mb_power(bay, 0); | |
510 | break; | |
511 | } | |
512 | bay->timer = msecs_to_jiffies(MB_RESET_DELAY); | |
513 | bay->state = mb_enabling_bay; | |
514 | MBDBG("mediabay%d: enabling (kind:%d)\n", i, bay->content_id); | |
515 | break; | |
516 | case mb_enabling_bay: | |
517 | bay->ops->un_reset(bay); | |
518 | bay->timer = msecs_to_jiffies(MB_SETUP_DELAY); | |
519 | bay->state = mb_resetting; | |
520 | MBDBG("mediabay%d: waiting reset (kind:%d)\n", i, bay->content_id); | |
521 | break; | |
1da177e4 LT |
522 | case mb_resetting: |
523 | if (bay->content_id != MB_CD) { | |
524 | MBDBG("mediabay%d: bay is up (kind:%d)\n", i, bay->content_id); | |
525 | bay->state = mb_up; | |
526 | break; | |
527 | } | |
34394e45 | 528 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
529 | MBDBG("mediabay%d: waiting IDE reset (kind:%d)\n", i, bay->content_id); |
530 | bay->ops->un_reset_ide(bay); | |
531 | bay->timer = msecs_to_jiffies(MB_IDE_WAIT); | |
532 | bay->state = mb_ide_resetting; | |
533 | #else | |
534 | printk(KERN_DEBUG "media-bay %d is ide (not compiled in kernel)\n", i); | |
535 | set_mb_power(bay, 0); | |
34394e45 | 536 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
1da177e4 | 537 | break; |
34394e45 | 538 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
539 | case mb_ide_resetting: |
540 | bay->timer = msecs_to_jiffies(MB_IDE_TIMEOUT); | |
541 | bay->state = mb_ide_waiting; | |
542 | MBDBG("mediabay%d: waiting IDE ready (kind:%d)\n", i, bay->content_id); | |
543 | break; | |
1da177e4 LT |
544 | case mb_ide_waiting: |
545 | if (bay->cd_base == NULL) { | |
546 | bay->timer = 0; | |
547 | bay->state = mb_up; | |
548 | MBDBG("mediabay%d: up before IDE init\n", i); | |
549 | break; | |
550 | } else if (MB_IDE_READY(i)) { | |
551 | bay->timer = 0; | |
552 | bay->state = mb_up; | |
553 | if (bay->cd_index < 0) { | |
554 | hw_regs_t hw; | |
555 | ||
556 | printk("mediabay %d, registering IDE...\n", i); | |
557 | pmu_suspend(); | |
558 | ide_init_hwif_ports(&hw, (unsigned long) bay->cd_base, (unsigned long) 0, NULL); | |
559 | hw.irq = bay->cd_irq; | |
560 | hw.chipset = ide_pmac; | |
cbb010c1 BZ |
561 | bay->cd_index = |
562 | ide_register_hw(&hw, NULL, NULL); | |
1da177e4 LT |
563 | pmu_resume(); |
564 | } | |
565 | if (bay->cd_index == -1) { | |
566 | /* We eventually do a retry */ | |
567 | bay->cd_retry++; | |
568 | printk("IDE register error\n"); | |
569 | set_mb_power(bay, 0); | |
570 | } else { | |
571 | printk(KERN_DEBUG "media-bay %d is ide%d\n", i, bay->cd_index); | |
572 | MBDBG("mediabay %d IDE ready\n", i); | |
573 | } | |
574 | break; | |
575 | } else if (bay->timer > 0) | |
576 | bay->timer -= msecs_to_jiffies(MB_POLL_DELAY); | |
577 | if (bay->timer <= 0) { | |
578 | printk("\nIDE Timeout in bay %d !, IDE state is: 0x%02x\n", | |
579 | i, readb(bay->cd_base + 0x70)); | |
580 | MBDBG("mediabay%d: nIDE Timeout !\n", i); | |
581 | set_mb_power(bay, 0); | |
582 | bay->timer = 0; | |
583 | } | |
584 | break; | |
34394e45 | 585 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
1da177e4 LT |
586 | case mb_powering_down: |
587 | bay->state = mb_empty; | |
34394e45 | 588 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
589 | if (bay->cd_index >= 0) { |
590 | printk(KERN_DEBUG "Unregistering mb %d ide, index:%d\n", i, | |
591 | bay->cd_index); | |
f82c2b17 | 592 | ide_unregister(bay->cd_index, 1, 1); |
1da177e4 LT |
593 | bay->cd_index = -1; |
594 | } | |
595 | if (bay->cd_retry) { | |
596 | if (bay->cd_retry > MAX_CD_RETRIES) { | |
597 | /* Should add an error sound (sort of beep in dmasound) */ | |
598 | printk("\nmedia-bay %d, IDE device badly inserted or unrecognised\n", i); | |
599 | } else { | |
600 | /* Force a new power down/up sequence */ | |
601 | bay->content_id = MB_NO; | |
602 | } | |
603 | } | |
34394e45 | 604 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
1da177e4 LT |
605 | MBDBG("mediabay%d: end of power down\n", i); |
606 | break; | |
607 | } | |
608 | } | |
609 | ||
610 | /* | |
611 | * This procedure runs as a kernel thread to poll the media bay | |
612 | * once each tick and register and unregister the IDE interface | |
613 | * with the IDE driver. It needs to be a thread because | |
614 | * ide_register can't be called from interrupt context. | |
615 | */ | |
aacaf9bd | 616 | static int media_bay_task(void *x) |
1da177e4 LT |
617 | { |
618 | int i; | |
619 | ||
33f6e794 | 620 | while (!kthread_should_stop()) { |
1da177e4 LT |
621 | for (i = 0; i < media_bay_count; ++i) { |
622 | down(&media_bays[i].lock); | |
623 | if (!media_bays[i].sleeping) | |
624 | media_bay_step(i); | |
625 | up(&media_bays[i].lock); | |
626 | } | |
627 | ||
628 | msleep_interruptible(MB_POLL_DELAY); | |
1da177e4 | 629 | } |
33f6e794 | 630 | return 0; |
1da177e4 LT |
631 | } |
632 | ||
5e655772 | 633 | static int __devinit media_bay_attach(struct macio_dev *mdev, const struct of_device_id *match) |
1da177e4 LT |
634 | { |
635 | struct media_bay_info* bay; | |
636 | u32 __iomem *regbase; | |
637 | struct device_node *ofnode; | |
cc5d0189 | 638 | unsigned long base; |
1da177e4 LT |
639 | int i; |
640 | ||
641 | ofnode = mdev->ofdev.node; | |
642 | ||
643 | if (macio_resource_count(mdev) < 1) | |
644 | return -ENODEV; | |
645 | if (macio_request_resources(mdev, "media-bay")) | |
646 | return -EBUSY; | |
647 | /* Media bay registers are located at the beginning of the | |
cc5d0189 BH |
648 | * mac-io chip, for now, we trick and align down the first |
649 | * resource passed in | |
1da177e4 | 650 | */ |
cc5d0189 BH |
651 | base = macio_resource_start(mdev, 0) & 0xffff0000u; |
652 | regbase = (u32 __iomem *)ioremap(base, 0x100); | |
1da177e4 LT |
653 | if (regbase == NULL) { |
654 | macio_release_resources(mdev); | |
655 | return -ENOMEM; | |
656 | } | |
657 | ||
658 | i = media_bay_count++; | |
659 | bay = &media_bays[i]; | |
660 | bay->mdev = mdev; | |
661 | bay->base = regbase; | |
662 | bay->index = i; | |
663 | bay->ops = match->data; | |
664 | bay->sleeping = 0; | |
665 | init_MUTEX(&bay->lock); | |
666 | ||
667 | /* Init HW probing */ | |
668 | if (bay->ops->init) | |
669 | bay->ops->init(bay); | |
670 | ||
671 | printk(KERN_INFO "mediabay%d: Registered %s media-bay\n", i, bay->ops->name); | |
672 | ||
673 | /* Force an immediate detect */ | |
674 | set_mb_power(bay, 0); | |
675 | msleep(MB_POWER_DELAY); | |
676 | bay->content_id = MB_NO; | |
677 | bay->last_value = bay->ops->content(bay); | |
678 | bay->value_count = msecs_to_jiffies(MB_STABLE_DELAY); | |
679 | bay->state = mb_empty; | |
680 | do { | |
681 | msleep(MB_POLL_DELAY); | |
682 | media_bay_step(i); | |
683 | } while((bay->state != mb_empty) && | |
684 | (bay->state != mb_up)); | |
685 | ||
686 | /* Mark us ready by filling our mdev data */ | |
687 | macio_set_drvdata(mdev, bay); | |
688 | ||
689 | /* Startup kernel thread */ | |
690 | if (i == 0) | |
33f6e794 | 691 | kthread_run(media_bay_task, NULL, "media-bay"); |
1da177e4 LT |
692 | |
693 | return 0; | |
694 | ||
695 | } | |
696 | ||
aacaf9bd | 697 | static int media_bay_suspend(struct macio_dev *mdev, pm_message_t state) |
1da177e4 LT |
698 | { |
699 | struct media_bay_info *bay = macio_get_drvdata(mdev); | |
700 | ||
3a2d5b70 RW |
701 | if (state.event != mdev->ofdev.dev.power.power_state.event |
702 | && (state.event & PM_EVENT_SLEEP)) { | |
1da177e4 LT |
703 | down(&bay->lock); |
704 | bay->sleeping = 1; | |
705 | set_mb_power(bay, 0); | |
706 | up(&bay->lock); | |
707 | msleep(MB_POLL_DELAY); | |
708 | mdev->ofdev.dev.power.power_state = state; | |
709 | } | |
710 | return 0; | |
711 | } | |
712 | ||
aacaf9bd | 713 | static int media_bay_resume(struct macio_dev *mdev) |
1da177e4 LT |
714 | { |
715 | struct media_bay_info *bay = macio_get_drvdata(mdev); | |
716 | ||
ca078bae | 717 | if (mdev->ofdev.dev.power.power_state.event != PM_EVENT_ON) { |
829ca9a3 | 718 | mdev->ofdev.dev.power.power_state = PMSG_ON; |
1da177e4 LT |
719 | |
720 | /* We re-enable the bay using it's previous content | |
721 | only if it did not change. Note those bozo timings, | |
722 | they seem to help the 3400 get it right. | |
723 | */ | |
724 | /* Force MB power to 0 */ | |
725 | down(&bay->lock); | |
726 | set_mb_power(bay, 0); | |
727 | msleep(MB_POWER_DELAY); | |
728 | if (bay->ops->content(bay) != bay->content_id) { | |
729 | printk("mediabay%d: content changed during sleep...\n", bay->index); | |
730 | up(&bay->lock); | |
731 | return 0; | |
732 | } | |
733 | set_mb_power(bay, 1); | |
734 | bay->last_value = bay->content_id; | |
735 | bay->value_count = msecs_to_jiffies(MB_STABLE_DELAY); | |
736 | bay->timer = msecs_to_jiffies(MB_POWER_DELAY); | |
34394e45 | 737 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
738 | bay->cd_retry = 0; |
739 | #endif | |
740 | do { | |
741 | msleep(MB_POLL_DELAY); | |
742 | media_bay_step(bay->index); | |
743 | } while((bay->state != mb_empty) && | |
744 | (bay->state != mb_up)); | |
745 | bay->sleeping = 0; | |
746 | up(&bay->lock); | |
747 | } | |
748 | return 0; | |
749 | } | |
750 | ||
751 | ||
752 | /* Definitions of "ops" structures. | |
753 | */ | |
aacaf9bd | 754 | static struct mb_ops ohare_mb_ops = { |
1da177e4 LT |
755 | .name = "Ohare", |
756 | .content = ohare_mb_content, | |
757 | .power = ohare_mb_power, | |
758 | .setup_bus = ohare_mb_setup_bus, | |
759 | .un_reset = ohare_mb_un_reset, | |
760 | .un_reset_ide = ohare_mb_un_reset_ide, | |
761 | }; | |
762 | ||
aacaf9bd | 763 | static struct mb_ops heathrow_mb_ops = { |
1da177e4 LT |
764 | .name = "Heathrow", |
765 | .content = heathrow_mb_content, | |
766 | .power = heathrow_mb_power, | |
767 | .setup_bus = heathrow_mb_setup_bus, | |
768 | .un_reset = heathrow_mb_un_reset, | |
769 | .un_reset_ide = heathrow_mb_un_reset_ide, | |
770 | }; | |
771 | ||
aacaf9bd | 772 | static struct mb_ops keylargo_mb_ops = { |
1da177e4 LT |
773 | .name = "KeyLargo", |
774 | .init = keylargo_mb_init, | |
775 | .content = keylargo_mb_content, | |
776 | .power = keylargo_mb_power, | |
777 | .setup_bus = keylargo_mb_setup_bus, | |
778 | .un_reset = keylargo_mb_un_reset, | |
779 | .un_reset_ide = keylargo_mb_un_reset_ide, | |
780 | }; | |
781 | ||
782 | /* | |
783 | * It seems that the bit for the media-bay interrupt in the IRQ_LEVEL | |
784 | * register is always set when there is something in the media bay. | |
785 | * This causes problems for the interrupt code if we attach an interrupt | |
786 | * handler to the media-bay interrupt, because it tends to go into | |
787 | * an infinite loop calling the media bay interrupt handler. | |
788 | * Therefore we do it all by polling the media bay once each tick. | |
789 | */ | |
790 | ||
5e655772 | 791 | static struct of_device_id media_bay_match[] = |
1da177e4 LT |
792 | { |
793 | { | |
794 | .name = "media-bay", | |
1da177e4 LT |
795 | .compatible = "keylargo-media-bay", |
796 | .data = &keylargo_mb_ops, | |
797 | }, | |
798 | { | |
799 | .name = "media-bay", | |
1da177e4 LT |
800 | .compatible = "heathrow-media-bay", |
801 | .data = &heathrow_mb_ops, | |
802 | }, | |
803 | { | |
804 | .name = "media-bay", | |
1da177e4 LT |
805 | .compatible = "ohare-media-bay", |
806 | .data = &ohare_mb_ops, | |
807 | }, | |
808 | {}, | |
809 | }; | |
810 | ||
811 | static struct macio_driver media_bay_driver = | |
812 | { | |
813 | .name = "media-bay", | |
814 | .match_table = media_bay_match, | |
815 | .probe = media_bay_attach, | |
816 | .suspend = media_bay_suspend, | |
817 | .resume = media_bay_resume | |
818 | }; | |
819 | ||
820 | static int __init media_bay_init(void) | |
821 | { | |
822 | int i; | |
823 | ||
824 | for (i=0; i<MAX_BAYS; i++) { | |
825 | memset((char *)&media_bays[i], 0, sizeof(struct media_bay_info)); | |
826 | media_bays[i].content_id = -1; | |
34394e45 | 827 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
828 | media_bays[i].cd_index = -1; |
829 | #endif | |
830 | } | |
e8222502 BH |
831 | if (!machine_is(powermac)) |
832 | return 0; | |
1da177e4 LT |
833 | |
834 | macio_register_driver(&media_bay_driver); | |
835 | ||
836 | return 0; | |
837 | } | |
838 | ||
839 | device_initcall(media_bay_init); |