Commit | Line | Data |
---|---|---|
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> |
9a24729d | 24 | #include <linux/mutex.h> |
1da177e4 LT |
25 | #include <asm/prom.h> |
26 | #include <asm/pgtable.h> | |
27 | #include <asm/io.h> | |
28 | #include <asm/machdep.h> | |
29 | #include <asm/pmac_feature.h> | |
30 | #include <asm/mediabay.h> | |
31 | #include <asm/sections.h> | |
32 | #include <asm/ohare.h> | |
33 | #include <asm/heathrow.h> | |
34 | #include <asm/keylargo.h> | |
35 | #include <linux/adb.h> | |
36 | #include <linux/pmu.h> | |
37 | ||
38 | ||
39 | #define MB_DEBUG | |
1da177e4 LT |
40 | |
41 | #ifdef MB_DEBUG | |
42 | #define MBDBG(fmt, arg...) printk(KERN_INFO fmt , ## arg) | |
43 | #else | |
44 | #define MBDBG(fmt, arg...) do { } while (0) | |
45 | #endif | |
46 | ||
47 | #define MB_FCR32(bay, r) ((bay)->base + ((r) >> 2)) | |
48 | #define MB_FCR8(bay, r) (((volatile u8 __iomem *)((bay)->base)) + (r)) | |
49 | ||
50 | #define MB_IN32(bay,r) (in_le32(MB_FCR32(bay,r))) | |
51 | #define MB_OUT32(bay,r,v) (out_le32(MB_FCR32(bay,r), (v))) | |
52 | #define MB_BIS(bay,r,v) (MB_OUT32((bay), (r), MB_IN32((bay), r) | (v))) | |
53 | #define MB_BIC(bay,r,v) (MB_OUT32((bay), (r), MB_IN32((bay), r) & ~(v))) | |
54 | #define MB_IN8(bay,r) (in_8(MB_FCR8(bay,r))) | |
55 | #define MB_OUT8(bay,r,v) (out_8(MB_FCR8(bay,r), (v))) | |
56 | ||
57 | struct media_bay_info; | |
58 | ||
59 | struct mb_ops { | |
60 | char* name; | |
61 | void (*init)(struct media_bay_info *bay); | |
62 | u8 (*content)(struct media_bay_info *bay); | |
63 | void (*power)(struct media_bay_info *bay, int on_off); | |
64 | int (*setup_bus)(struct media_bay_info *bay, u8 device_id); | |
65 | void (*un_reset)(struct media_bay_info *bay); | |
66 | void (*un_reset_ide)(struct media_bay_info *bay); | |
67 | }; | |
68 | ||
69 | struct media_bay_info { | |
70 | u32 __iomem *base; | |
71 | int content_id; | |
72 | int state; | |
73 | int last_value; | |
74 | int value_count; | |
75 | int timer; | |
76 | struct macio_dev *mdev; | |
77 | struct mb_ops* ops; | |
78 | int index; | |
79 | int cached_gpio; | |
80 | int sleeping; | |
9a24729d | 81 | struct mutex lock; |
34394e45 | 82 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
2dde7861 | 83 | ide_hwif_t *cd_port; |
1da177e4 | 84 | void __iomem *cd_base; |
1da177e4 LT |
85 | int cd_irq; |
86 | int cd_retry; | |
87 | #endif | |
305c7368 | 88 | #if defined(CONFIG_BLK_DEV_IDE_PMAC) |
34394e45 BZ |
89 | int cd_index; |
90 | #endif | |
1da177e4 LT |
91 | }; |
92 | ||
93 | #define MAX_BAYS 2 | |
94 | ||
95 | static struct media_bay_info media_bays[MAX_BAYS]; | |
96 | int media_bay_count = 0; | |
97 | ||
34394e45 | 98 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
99 | /* check the busy bit in the media-bay ide interface |
100 | (assumes the media-bay contains an ide device) */ | |
101 | #define MB_IDE_READY(i) ((readb(media_bays[i].cd_base + 0x70) & 0x80) == 0) | |
102 | #endif | |
103 | ||
104 | /* | |
105 | * Wait that number of ms between each step in normal polling mode | |
106 | */ | |
107 | #define MB_POLL_DELAY 25 | |
108 | ||
109 | /* | |
110 | * Consider the media-bay ID value stable if it is the same for | |
111 | * this number of milliseconds | |
112 | */ | |
113 | #define MB_STABLE_DELAY 100 | |
114 | ||
115 | /* Wait after powering up the media bay this delay in ms | |
116 | * timeout bumped for some powerbooks | |
117 | */ | |
118 | #define MB_POWER_DELAY 200 | |
119 | ||
120 | /* | |
121 | * Hold the media-bay reset signal true for this many ticks | |
122 | * after a device is inserted before releasing it. | |
123 | */ | |
124 | #define MB_RESET_DELAY 50 | |
125 | ||
126 | /* | |
127 | * Wait this long after the reset signal is released and before doing | |
128 | * further operations. After this delay, the IDE reset signal is released | |
129 | * too for an IDE device | |
130 | */ | |
131 | #define MB_SETUP_DELAY 100 | |
132 | ||
133 | /* | |
134 | * Wait this many ticks after an IDE device (e.g. CD-ROM) is inserted | |
135 | * (or until the device is ready) before waiting for busy bit to disappear | |
136 | */ | |
137 | #define MB_IDE_WAIT 1000 | |
138 | ||
139 | /* | |
140 | * Timeout waiting for busy bit of an IDE device to go down | |
141 | */ | |
142 | #define MB_IDE_TIMEOUT 5000 | |
143 | ||
144 | /* | |
145 | * Max retries of the full power up/down sequence for an IDE device | |
146 | */ | |
147 | #define MAX_CD_RETRIES 3 | |
148 | ||
149 | /* | |
150 | * States of a media bay | |
151 | */ | |
152 | enum { | |
153 | mb_empty = 0, /* Idle */ | |
154 | mb_powering_up, /* power bit set, waiting MB_POWER_DELAY */ | |
155 | mb_enabling_bay, /* enable bits set, waiting MB_RESET_DELAY */ | |
156 | mb_resetting, /* reset bit unset, waiting MB_SETUP_DELAY */ | |
157 | mb_ide_resetting, /* IDE reset bit unser, waiting MB_IDE_WAIT */ | |
158 | mb_ide_waiting, /* Waiting for BUSY bit to go away until MB_IDE_TIMEOUT */ | |
159 | mb_up, /* Media bay full */ | |
160 | mb_powering_down /* Powering down (avoid too fast down/up) */ | |
161 | }; | |
162 | ||
163 | #define MB_POWER_SOUND 0x08 | |
164 | #define MB_POWER_FLOPPY 0x04 | |
165 | #define MB_POWER_ATA 0x02 | |
166 | #define MB_POWER_PCI 0x01 | |
167 | #define MB_POWER_OFF 0x00 | |
168 | ||
169 | /* | |
170 | * Functions for polling content of media bay | |
171 | */ | |
172 | ||
aacaf9bd | 173 | static u8 |
1da177e4 LT |
174 | ohare_mb_content(struct media_bay_info *bay) |
175 | { | |
176 | return (MB_IN32(bay, OHARE_MBCR) >> 12) & 7; | |
177 | } | |
178 | ||
aacaf9bd | 179 | static u8 |
1da177e4 LT |
180 | heathrow_mb_content(struct media_bay_info *bay) |
181 | { | |
182 | return (MB_IN32(bay, HEATHROW_MBCR) >> 12) & 7; | |
183 | } | |
184 | ||
aacaf9bd | 185 | static u8 |
1da177e4 LT |
186 | keylargo_mb_content(struct media_bay_info *bay) |
187 | { | |
188 | int new_gpio; | |
189 | ||
190 | new_gpio = MB_IN8(bay, KL_GPIO_MEDIABAY_IRQ) & KEYLARGO_GPIO_INPUT_DATA; | |
191 | if (new_gpio) { | |
192 | bay->cached_gpio = new_gpio; | |
193 | return MB_NO; | |
194 | } else if (bay->cached_gpio != new_gpio) { | |
195 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_ENABLE); | |
196 | (void)MB_IN32(bay, KEYLARGO_MBCR); | |
197 | udelay(5); | |
198 | MB_BIC(bay, KEYLARGO_MBCR, 0x0000000F); | |
199 | (void)MB_IN32(bay, KEYLARGO_MBCR); | |
200 | udelay(5); | |
201 | bay->cached_gpio = new_gpio; | |
202 | } | |
203 | return (MB_IN32(bay, KEYLARGO_MBCR) >> 4) & 7; | |
204 | } | |
205 | ||
206 | /* | |
207 | * Functions for powering up/down the bay, puts the bay device | |
208 | * into reset state as well | |
209 | */ | |
210 | ||
aacaf9bd | 211 | static void |
1da177e4 LT |
212 | ohare_mb_power(struct media_bay_info* bay, int on_off) |
213 | { | |
214 | if (on_off) { | |
215 | /* Power up device, assert it's reset line */ | |
216 | MB_BIC(bay, OHARE_FCR, OH_BAY_RESET_N); | |
217 | MB_BIC(bay, OHARE_FCR, OH_BAY_POWER_N); | |
218 | } else { | |
219 | /* Disable all devices */ | |
220 | MB_BIC(bay, OHARE_FCR, OH_BAY_DEV_MASK); | |
221 | MB_BIC(bay, OHARE_FCR, OH_FLOPPY_ENABLE); | |
222 | /* Cut power from bay, release reset line */ | |
223 | MB_BIS(bay, OHARE_FCR, OH_BAY_POWER_N); | |
224 | MB_BIS(bay, OHARE_FCR, OH_BAY_RESET_N); | |
225 | MB_BIS(bay, OHARE_FCR, OH_IDE1_RESET_N); | |
226 | } | |
227 | MB_BIC(bay, OHARE_MBCR, 0x00000F00); | |
228 | } | |
229 | ||
aacaf9bd | 230 | static void |
1da177e4 LT |
231 | heathrow_mb_power(struct media_bay_info* bay, int on_off) |
232 | { | |
233 | if (on_off) { | |
234 | /* Power up device, assert it's reset line */ | |
235 | MB_BIC(bay, HEATHROW_FCR, HRW_BAY_RESET_N); | |
236 | MB_BIC(bay, HEATHROW_FCR, HRW_BAY_POWER_N); | |
237 | } else { | |
238 | /* Disable all devices */ | |
239 | MB_BIC(bay, HEATHROW_FCR, HRW_BAY_DEV_MASK); | |
240 | MB_BIC(bay, HEATHROW_FCR, HRW_SWIM_ENABLE); | |
241 | /* Cut power from bay, release reset line */ | |
242 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_POWER_N); | |
243 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_RESET_N); | |
244 | MB_BIS(bay, HEATHROW_FCR, HRW_IDE1_RESET_N); | |
245 | } | |
246 | MB_BIC(bay, HEATHROW_MBCR, 0x00000F00); | |
247 | } | |
248 | ||
aacaf9bd | 249 | static void |
1da177e4 LT |
250 | keylargo_mb_power(struct media_bay_info* bay, int on_off) |
251 | { | |
252 | if (on_off) { | |
253 | /* Power up device, assert it's reset line */ | |
254 | MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET); | |
255 | MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_POWER); | |
256 | } else { | |
257 | /* Disable all devices */ | |
258 | MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_MASK); | |
259 | MB_BIC(bay, KEYLARGO_FCR1, KL1_EIDE0_ENABLE); | |
260 | /* Cut power from bay, release reset line */ | |
261 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_POWER); | |
262 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET); | |
263 | MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N); | |
264 | } | |
265 | MB_BIC(bay, KEYLARGO_MBCR, 0x0000000F); | |
266 | } | |
267 | ||
268 | /* | |
269 | * Functions for configuring the media bay for a given type of device, | |
270 | * enable the related busses | |
271 | */ | |
272 | ||
aacaf9bd | 273 | static int |
1da177e4 LT |
274 | ohare_mb_setup_bus(struct media_bay_info* bay, u8 device_id) |
275 | { | |
276 | switch(device_id) { | |
277 | case MB_FD: | |
278 | case MB_FD1: | |
279 | MB_BIS(bay, OHARE_FCR, OH_BAY_FLOPPY_ENABLE); | |
280 | MB_BIS(bay, OHARE_FCR, OH_FLOPPY_ENABLE); | |
281 | return 0; | |
282 | case MB_CD: | |
283 | MB_BIC(bay, OHARE_FCR, OH_IDE1_RESET_N); | |
284 | MB_BIS(bay, OHARE_FCR, OH_BAY_IDE_ENABLE); | |
285 | return 0; | |
286 | case MB_PCI: | |
287 | MB_BIS(bay, OHARE_FCR, OH_BAY_PCI_ENABLE); | |
288 | return 0; | |
289 | } | |
290 | return -ENODEV; | |
291 | } | |
292 | ||
aacaf9bd | 293 | static int |
1da177e4 LT |
294 | heathrow_mb_setup_bus(struct media_bay_info* bay, u8 device_id) |
295 | { | |
296 | switch(device_id) { | |
297 | case MB_FD: | |
298 | case MB_FD1: | |
299 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_FLOPPY_ENABLE); | |
300 | MB_BIS(bay, HEATHROW_FCR, HRW_SWIM_ENABLE); | |
301 | return 0; | |
302 | case MB_CD: | |
303 | MB_BIC(bay, HEATHROW_FCR, HRW_IDE1_RESET_N); | |
304 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_IDE_ENABLE); | |
305 | return 0; | |
306 | case MB_PCI: | |
307 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_PCI_ENABLE); | |
308 | return 0; | |
309 | } | |
310 | return -ENODEV; | |
311 | } | |
312 | ||
aacaf9bd | 313 | static int |
1da177e4 LT |
314 | keylargo_mb_setup_bus(struct media_bay_info* bay, u8 device_id) |
315 | { | |
316 | switch(device_id) { | |
317 | case MB_CD: | |
318 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_IDE_ENABLE); | |
319 | MB_BIC(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N); | |
320 | MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_ENABLE); | |
321 | return 0; | |
322 | case MB_PCI: | |
323 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_PCI_ENABLE); | |
324 | return 0; | |
325 | case MB_SOUND: | |
326 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_SOUND_ENABLE); | |
327 | return 0; | |
328 | } | |
329 | return -ENODEV; | |
330 | } | |
331 | ||
332 | /* | |
333 | * Functions for tweaking resets | |
334 | */ | |
335 | ||
aacaf9bd | 336 | static void |
1da177e4 LT |
337 | ohare_mb_un_reset(struct media_bay_info* bay) |
338 | { | |
339 | MB_BIS(bay, OHARE_FCR, OH_BAY_RESET_N); | |
340 | } | |
341 | ||
aacaf9bd | 342 | static void keylargo_mb_init(struct media_bay_info *bay) |
1da177e4 LT |
343 | { |
344 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_ENABLE); | |
345 | } | |
346 | ||
aacaf9bd | 347 | static void heathrow_mb_un_reset(struct media_bay_info* bay) |
1da177e4 LT |
348 | { |
349 | MB_BIS(bay, HEATHROW_FCR, HRW_BAY_RESET_N); | |
350 | } | |
351 | ||
aacaf9bd | 352 | static void keylargo_mb_un_reset(struct media_bay_info* bay) |
1da177e4 LT |
353 | { |
354 | MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET); | |
355 | } | |
356 | ||
aacaf9bd | 357 | static void ohare_mb_un_reset_ide(struct media_bay_info* bay) |
1da177e4 LT |
358 | { |
359 | MB_BIS(bay, OHARE_FCR, OH_IDE1_RESET_N); | |
360 | } | |
361 | ||
aacaf9bd | 362 | static void heathrow_mb_un_reset_ide(struct media_bay_info* bay) |
1da177e4 LT |
363 | { |
364 | MB_BIS(bay, HEATHROW_FCR, HRW_IDE1_RESET_N); | |
365 | } | |
366 | ||
aacaf9bd | 367 | static void keylargo_mb_un_reset_ide(struct media_bay_info* bay) |
1da177e4 LT |
368 | { |
369 | MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N); | |
370 | } | |
371 | ||
aacaf9bd | 372 | static inline void set_mb_power(struct media_bay_info* bay, int onoff) |
1da177e4 LT |
373 | { |
374 | /* Power up up and assert the bay reset line */ | |
375 | if (onoff) { | |
376 | bay->ops->power(bay, 1); | |
377 | bay->state = mb_powering_up; | |
378 | MBDBG("mediabay%d: powering up\n", bay->index); | |
379 | } else { | |
380 | /* Make sure everything is powered down & disabled */ | |
381 | bay->ops->power(bay, 0); | |
382 | bay->state = mb_powering_down; | |
383 | MBDBG("mediabay%d: powering down\n", bay->index); | |
384 | } | |
385 | bay->timer = msecs_to_jiffies(MB_POWER_DELAY); | |
386 | } | |
387 | ||
aacaf9bd | 388 | static void poll_media_bay(struct media_bay_info* bay) |
1da177e4 LT |
389 | { |
390 | int id = bay->ops->content(bay); | |
391 | ||
392 | if (id == bay->last_value) { | |
393 | if (id != bay->content_id) { | |
394 | bay->value_count += msecs_to_jiffies(MB_POLL_DELAY); | |
395 | if (bay->value_count >= msecs_to_jiffies(MB_STABLE_DELAY)) { | |
396 | /* If the device type changes without going thru | |
397 | * "MB_NO", we force a pass by "MB_NO" to make sure | |
398 | * things are properly reset | |
399 | */ | |
400 | if ((id != MB_NO) && (bay->content_id != MB_NO)) { | |
401 | id = MB_NO; | |
402 | MBDBG("mediabay%d: forcing MB_NO\n", bay->index); | |
403 | } | |
404 | MBDBG("mediabay%d: switching to %d\n", bay->index, id); | |
405 | set_mb_power(bay, id != MB_NO); | |
406 | bay->content_id = id; | |
407 | if (id == MB_NO) { | |
34394e45 | 408 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
409 | bay->cd_retry = 0; |
410 | #endif | |
411 | printk(KERN_INFO "media bay %d is empty\n", bay->index); | |
412 | } | |
413 | } | |
414 | } | |
415 | } else { | |
416 | bay->last_value = id; | |
417 | bay->value_count = 0; | |
418 | } | |
419 | } | |
420 | ||
305c7368 | 421 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
aacaf9bd | 422 | int check_media_bay(struct device_node *which_bay, int what) |
1da177e4 | 423 | { |
1da177e4 LT |
424 | int i; |
425 | ||
426 | for (i=0; i<media_bay_count; i++) | |
427 | if (media_bays[i].mdev && which_bay == media_bays[i].mdev->ofdev.node) { | |
428 | if ((what == media_bays[i].content_id) && media_bays[i].state == mb_up) | |
429 | return 0; | |
430 | media_bays[i].cd_index = -1; | |
431 | return -EINVAL; | |
432 | } | |
1da177e4 LT |
433 | return -ENODEV; |
434 | } | |
435 | EXPORT_SYMBOL(check_media_bay); | |
436 | ||
aacaf9bd | 437 | int check_media_bay_by_base(unsigned long base, int what) |
1da177e4 | 438 | { |
1da177e4 LT |
439 | int i; |
440 | ||
441 | for (i=0; i<media_bay_count; i++) | |
442 | if (media_bays[i].mdev && base == (unsigned long) media_bays[i].cd_base) { | |
443 | if ((what == media_bays[i].content_id) && media_bays[i].state == mb_up) | |
444 | return 0; | |
445 | media_bays[i].cd_index = -1; | |
446 | return -EINVAL; | |
447 | } | |
34394e45 | 448 | |
1da177e4 LT |
449 | return -ENODEV; |
450 | } | |
451 | ||
aacaf9bd | 452 | int media_bay_set_ide_infos(struct device_node* which_bay, unsigned long base, |
2dde7861 | 453 | int irq, ide_hwif_t *hwif) |
1da177e4 | 454 | { |
1da177e4 LT |
455 | int i; |
456 | ||
457 | for (i=0; i<media_bay_count; i++) { | |
458 | struct media_bay_info* bay = &media_bays[i]; | |
459 | ||
460 | if (bay->mdev && which_bay == bay->mdev->ofdev.node) { | |
2dde7861 | 461 | int timeout = 5000, index = hwif->index; |
1da177e4 | 462 | |
9a24729d | 463 | mutex_lock(&bay->lock); |
1da177e4 | 464 | |
2dde7861 | 465 | bay->cd_port = hwif; |
1da177e4 LT |
466 | bay->cd_base = (void __iomem *) base; |
467 | bay->cd_irq = irq; | |
468 | ||
469 | if ((MB_CD != bay->content_id) || bay->state != mb_up) { | |
9a24729d | 470 | mutex_unlock(&bay->lock); |
1da177e4 LT |
471 | return 0; |
472 | } | |
473 | printk(KERN_DEBUG "Registered ide%d for media bay %d\n", index, i); | |
474 | do { | |
475 | if (MB_IDE_READY(i)) { | |
476 | bay->cd_index = index; | |
9a24729d | 477 | mutex_unlock(&bay->lock); |
1da177e4 LT |
478 | return 0; |
479 | } | |
480 | mdelay(1); | |
481 | } while(--timeout); | |
482 | printk(KERN_DEBUG "Timeount waiting IDE in bay %d\n", i); | |
9a24729d | 483 | mutex_unlock(&bay->lock); |
1da177e4 LT |
484 | return -ENODEV; |
485 | } | |
486 | } | |
34394e45 | 487 | |
1da177e4 LT |
488 | return -ENODEV; |
489 | } | |
34394e45 | 490 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
1da177e4 | 491 | |
aacaf9bd | 492 | static void media_bay_step(int i) |
1da177e4 LT |
493 | { |
494 | struct media_bay_info* bay = &media_bays[i]; | |
495 | ||
496 | /* We don't poll when powering down */ | |
497 | if (bay->state != mb_powering_down) | |
498 | poll_media_bay(bay); | |
499 | ||
500 | /* If timer expired or polling IDE busy, run state machine */ | |
501 | if ((bay->state != mb_ide_waiting) && (bay->timer != 0)) { | |
502 | bay->timer -= msecs_to_jiffies(MB_POLL_DELAY); | |
503 | if (bay->timer > 0) | |
504 | return; | |
505 | bay->timer = 0; | |
506 | } | |
507 | ||
508 | switch(bay->state) { | |
509 | case mb_powering_up: | |
510 | if (bay->ops->setup_bus(bay, bay->last_value) < 0) { | |
511 | MBDBG("mediabay%d: device not supported (kind:%d)\n", i, bay->content_id); | |
512 | set_mb_power(bay, 0); | |
513 | break; | |
514 | } | |
515 | bay->timer = msecs_to_jiffies(MB_RESET_DELAY); | |
516 | bay->state = mb_enabling_bay; | |
517 | MBDBG("mediabay%d: enabling (kind:%d)\n", i, bay->content_id); | |
518 | break; | |
519 | case mb_enabling_bay: | |
520 | bay->ops->un_reset(bay); | |
521 | bay->timer = msecs_to_jiffies(MB_SETUP_DELAY); | |
522 | bay->state = mb_resetting; | |
523 | MBDBG("mediabay%d: waiting reset (kind:%d)\n", i, bay->content_id); | |
524 | break; | |
1da177e4 LT |
525 | case mb_resetting: |
526 | if (bay->content_id != MB_CD) { | |
527 | MBDBG("mediabay%d: bay is up (kind:%d)\n", i, bay->content_id); | |
528 | bay->state = mb_up; | |
529 | break; | |
530 | } | |
34394e45 | 531 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
532 | MBDBG("mediabay%d: waiting IDE reset (kind:%d)\n", i, bay->content_id); |
533 | bay->ops->un_reset_ide(bay); | |
534 | bay->timer = msecs_to_jiffies(MB_IDE_WAIT); | |
535 | bay->state = mb_ide_resetting; | |
536 | #else | |
537 | printk(KERN_DEBUG "media-bay %d is ide (not compiled in kernel)\n", i); | |
538 | set_mb_power(bay, 0); | |
34394e45 | 539 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
1da177e4 | 540 | break; |
34394e45 | 541 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
542 | case mb_ide_resetting: |
543 | bay->timer = msecs_to_jiffies(MB_IDE_TIMEOUT); | |
544 | bay->state = mb_ide_waiting; | |
545 | MBDBG("mediabay%d: waiting IDE ready (kind:%d)\n", i, bay->content_id); | |
546 | break; | |
1da177e4 LT |
547 | case mb_ide_waiting: |
548 | if (bay->cd_base == NULL) { | |
549 | bay->timer = 0; | |
550 | bay->state = mb_up; | |
551 | MBDBG("mediabay%d: up before IDE init\n", i); | |
552 | break; | |
553 | } else if (MB_IDE_READY(i)) { | |
554 | bay->timer = 0; | |
555 | bay->state = mb_up; | |
556 | if (bay->cd_index < 0) { | |
1da177e4 LT |
557 | printk("mediabay %d, registering IDE...\n", i); |
558 | pmu_suspend(); | |
2dde7861 | 559 | ide_port_scan(bay->cd_port); |
c1a8e398 BZ |
560 | if (bay->cd_port->present) |
561 | bay->cd_index = bay->cd_port->index; | |
1da177e4 LT |
562 | pmu_resume(); |
563 | } | |
564 | if (bay->cd_index == -1) { | |
565 | /* We eventually do a retry */ | |
566 | bay->cd_retry++; | |
567 | printk("IDE register error\n"); | |
568 | set_mb_power(bay, 0); | |
569 | } else { | |
570 | printk(KERN_DEBUG "media-bay %d is ide%d\n", i, bay->cd_index); | |
571 | MBDBG("mediabay %d IDE ready\n", i); | |
572 | } | |
573 | break; | |
574 | } else if (bay->timer > 0) | |
575 | bay->timer -= msecs_to_jiffies(MB_POLL_DELAY); | |
576 | if (bay->timer <= 0) { | |
577 | printk("\nIDE Timeout in bay %d !, IDE state is: 0x%02x\n", | |
578 | i, readb(bay->cd_base + 0x70)); | |
579 | MBDBG("mediabay%d: nIDE Timeout !\n", i); | |
580 | set_mb_power(bay, 0); | |
581 | bay->timer = 0; | |
582 | } | |
583 | break; | |
34394e45 | 584 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
1da177e4 LT |
585 | case mb_powering_down: |
586 | bay->state = mb_empty; | |
34394e45 | 587 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
588 | if (bay->cd_index >= 0) { |
589 | printk(KERN_DEBUG "Unregistering mb %d ide, index:%d\n", i, | |
590 | bay->cd_index); | |
2dde7861 | 591 | ide_port_unregister_devices(bay->cd_port); |
1da177e4 LT |
592 | bay->cd_index = -1; |
593 | } | |
594 | if (bay->cd_retry) { | |
595 | if (bay->cd_retry > MAX_CD_RETRIES) { | |
596 | /* Should add an error sound (sort of beep in dmasound) */ | |
597 | printk("\nmedia-bay %d, IDE device badly inserted or unrecognised\n", i); | |
598 | } else { | |
599 | /* Force a new power down/up sequence */ | |
600 | bay->content_id = MB_NO; | |
601 | } | |
602 | } | |
34394e45 | 603 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
1da177e4 LT |
604 | MBDBG("mediabay%d: end of power down\n", i); |
605 | break; | |
606 | } | |
607 | } | |
608 | ||
609 | /* | |
610 | * This procedure runs as a kernel thread to poll the media bay | |
611 | * once each tick and register and unregister the IDE interface | |
612 | * with the IDE driver. It needs to be a thread because | |
613 | * ide_register can't be called from interrupt context. | |
614 | */ | |
aacaf9bd | 615 | static int media_bay_task(void *x) |
1da177e4 LT |
616 | { |
617 | int i; | |
618 | ||
33f6e794 | 619 | while (!kthread_should_stop()) { |
1da177e4 | 620 | for (i = 0; i < media_bay_count; ++i) { |
9a24729d | 621 | mutex_lock(&media_bays[i].lock); |
1da177e4 LT |
622 | if (!media_bays[i].sleeping) |
623 | media_bay_step(i); | |
9a24729d | 624 | mutex_unlock(&media_bays[i].lock); |
1da177e4 LT |
625 | } |
626 | ||
627 | msleep_interruptible(MB_POLL_DELAY); | |
1da177e4 | 628 | } |
33f6e794 | 629 | return 0; |
1da177e4 LT |
630 | } |
631 | ||
5e655772 | 632 | static int __devinit media_bay_attach(struct macio_dev *mdev, const struct of_device_id *match) |
1da177e4 LT |
633 | { |
634 | struct media_bay_info* bay; | |
635 | u32 __iomem *regbase; | |
636 | struct device_node *ofnode; | |
cc5d0189 | 637 | unsigned long base; |
1da177e4 LT |
638 | int i; |
639 | ||
640 | ofnode = mdev->ofdev.node; | |
641 | ||
642 | if (macio_resource_count(mdev) < 1) | |
643 | return -ENODEV; | |
644 | if (macio_request_resources(mdev, "media-bay")) | |
645 | return -EBUSY; | |
646 | /* Media bay registers are located at the beginning of the | |
cc5d0189 BH |
647 | * mac-io chip, for now, we trick and align down the first |
648 | * resource passed in | |
1da177e4 | 649 | */ |
cc5d0189 BH |
650 | base = macio_resource_start(mdev, 0) & 0xffff0000u; |
651 | regbase = (u32 __iomem *)ioremap(base, 0x100); | |
1da177e4 LT |
652 | if (regbase == NULL) { |
653 | macio_release_resources(mdev); | |
654 | return -ENOMEM; | |
655 | } | |
656 | ||
657 | i = media_bay_count++; | |
658 | bay = &media_bays[i]; | |
659 | bay->mdev = mdev; | |
660 | bay->base = regbase; | |
661 | bay->index = i; | |
662 | bay->ops = match->data; | |
663 | bay->sleeping = 0; | |
9a24729d | 664 | mutex_init(&bay->lock); |
1da177e4 LT |
665 | |
666 | /* Init HW probing */ | |
667 | if (bay->ops->init) | |
668 | bay->ops->init(bay); | |
669 | ||
670 | printk(KERN_INFO "mediabay%d: Registered %s media-bay\n", i, bay->ops->name); | |
671 | ||
672 | /* Force an immediate detect */ | |
673 | set_mb_power(bay, 0); | |
674 | msleep(MB_POWER_DELAY); | |
675 | bay->content_id = MB_NO; | |
676 | bay->last_value = bay->ops->content(bay); | |
677 | bay->value_count = msecs_to_jiffies(MB_STABLE_DELAY); | |
678 | bay->state = mb_empty; | |
679 | do { | |
680 | msleep(MB_POLL_DELAY); | |
681 | media_bay_step(i); | |
682 | } while((bay->state != mb_empty) && | |
683 | (bay->state != mb_up)); | |
684 | ||
685 | /* Mark us ready by filling our mdev data */ | |
686 | macio_set_drvdata(mdev, bay); | |
687 | ||
688 | /* Startup kernel thread */ | |
689 | if (i == 0) | |
33f6e794 | 690 | kthread_run(media_bay_task, NULL, "media-bay"); |
1da177e4 LT |
691 | |
692 | return 0; | |
693 | ||
694 | } | |
695 | ||
aacaf9bd | 696 | static int media_bay_suspend(struct macio_dev *mdev, pm_message_t state) |
1da177e4 LT |
697 | { |
698 | struct media_bay_info *bay = macio_get_drvdata(mdev); | |
699 | ||
3a2d5b70 RW |
700 | if (state.event != mdev->ofdev.dev.power.power_state.event |
701 | && (state.event & PM_EVENT_SLEEP)) { | |
9a24729d | 702 | mutex_lock(&bay->lock); |
1da177e4 LT |
703 | bay->sleeping = 1; |
704 | set_mb_power(bay, 0); | |
9a24729d | 705 | mutex_unlock(&bay->lock); |
1da177e4 LT |
706 | msleep(MB_POLL_DELAY); |
707 | mdev->ofdev.dev.power.power_state = state; | |
708 | } | |
709 | return 0; | |
710 | } | |
711 | ||
aacaf9bd | 712 | static int media_bay_resume(struct macio_dev *mdev) |
1da177e4 LT |
713 | { |
714 | struct media_bay_info *bay = macio_get_drvdata(mdev); | |
715 | ||
ca078bae | 716 | if (mdev->ofdev.dev.power.power_state.event != PM_EVENT_ON) { |
829ca9a3 | 717 | mdev->ofdev.dev.power.power_state = PMSG_ON; |
1da177e4 LT |
718 | |
719 | /* We re-enable the bay using it's previous content | |
720 | only if it did not change. Note those bozo timings, | |
721 | they seem to help the 3400 get it right. | |
722 | */ | |
723 | /* Force MB power to 0 */ | |
9a24729d | 724 | mutex_lock(&bay->lock); |
1da177e4 LT |
725 | set_mb_power(bay, 0); |
726 | msleep(MB_POWER_DELAY); | |
727 | if (bay->ops->content(bay) != bay->content_id) { | |
728 | printk("mediabay%d: content changed during sleep...\n", bay->index); | |
9a24729d | 729 | mutex_unlock(&bay->lock); |
1da177e4 LT |
730 | return 0; |
731 | } | |
732 | set_mb_power(bay, 1); | |
733 | bay->last_value = bay->content_id; | |
734 | bay->value_count = msecs_to_jiffies(MB_STABLE_DELAY); | |
735 | bay->timer = msecs_to_jiffies(MB_POWER_DELAY); | |
34394e45 | 736 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
737 | bay->cd_retry = 0; |
738 | #endif | |
739 | do { | |
740 | msleep(MB_POLL_DELAY); | |
741 | media_bay_step(bay->index); | |
742 | } while((bay->state != mb_empty) && | |
743 | (bay->state != mb_up)); | |
744 | bay->sleeping = 0; | |
9a24729d | 745 | mutex_unlock(&bay->lock); |
1da177e4 LT |
746 | } |
747 | return 0; | |
748 | } | |
749 | ||
750 | ||
751 | /* Definitions of "ops" structures. | |
752 | */ | |
aacaf9bd | 753 | static struct mb_ops ohare_mb_ops = { |
1da177e4 LT |
754 | .name = "Ohare", |
755 | .content = ohare_mb_content, | |
756 | .power = ohare_mb_power, | |
757 | .setup_bus = ohare_mb_setup_bus, | |
758 | .un_reset = ohare_mb_un_reset, | |
759 | .un_reset_ide = ohare_mb_un_reset_ide, | |
760 | }; | |
761 | ||
aacaf9bd | 762 | static struct mb_ops heathrow_mb_ops = { |
1da177e4 LT |
763 | .name = "Heathrow", |
764 | .content = heathrow_mb_content, | |
765 | .power = heathrow_mb_power, | |
766 | .setup_bus = heathrow_mb_setup_bus, | |
767 | .un_reset = heathrow_mb_un_reset, | |
768 | .un_reset_ide = heathrow_mb_un_reset_ide, | |
769 | }; | |
770 | ||
aacaf9bd | 771 | static struct mb_ops keylargo_mb_ops = { |
1da177e4 LT |
772 | .name = "KeyLargo", |
773 | .init = keylargo_mb_init, | |
774 | .content = keylargo_mb_content, | |
775 | .power = keylargo_mb_power, | |
776 | .setup_bus = keylargo_mb_setup_bus, | |
777 | .un_reset = keylargo_mb_un_reset, | |
778 | .un_reset_ide = keylargo_mb_un_reset_ide, | |
779 | }; | |
780 | ||
781 | /* | |
782 | * It seems that the bit for the media-bay interrupt in the IRQ_LEVEL | |
783 | * register is always set when there is something in the media bay. | |
784 | * This causes problems for the interrupt code if we attach an interrupt | |
785 | * handler to the media-bay interrupt, because it tends to go into | |
786 | * an infinite loop calling the media bay interrupt handler. | |
787 | * Therefore we do it all by polling the media bay once each tick. | |
788 | */ | |
789 | ||
5e655772 | 790 | static struct of_device_id media_bay_match[] = |
1da177e4 LT |
791 | { |
792 | { | |
793 | .name = "media-bay", | |
1da177e4 LT |
794 | .compatible = "keylargo-media-bay", |
795 | .data = &keylargo_mb_ops, | |
796 | }, | |
797 | { | |
798 | .name = "media-bay", | |
1da177e4 LT |
799 | .compatible = "heathrow-media-bay", |
800 | .data = &heathrow_mb_ops, | |
801 | }, | |
802 | { | |
803 | .name = "media-bay", | |
1da177e4 LT |
804 | .compatible = "ohare-media-bay", |
805 | .data = &ohare_mb_ops, | |
806 | }, | |
807 | {}, | |
808 | }; | |
809 | ||
810 | static struct macio_driver media_bay_driver = | |
811 | { | |
812 | .name = "media-bay", | |
813 | .match_table = media_bay_match, | |
814 | .probe = media_bay_attach, | |
815 | .suspend = media_bay_suspend, | |
816 | .resume = media_bay_resume | |
817 | }; | |
818 | ||
819 | static int __init media_bay_init(void) | |
820 | { | |
821 | int i; | |
822 | ||
823 | for (i=0; i<MAX_BAYS; i++) { | |
824 | memset((char *)&media_bays[i], 0, sizeof(struct media_bay_info)); | |
825 | media_bays[i].content_id = -1; | |
34394e45 | 826 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
1da177e4 LT |
827 | media_bays[i].cd_index = -1; |
828 | #endif | |
829 | } | |
e8222502 BH |
830 | if (!machine_is(powermac)) |
831 | return 0; | |
1da177e4 LT |
832 | |
833 | macio_register_driver(&media_bay_driver); | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
838 | device_initcall(media_bay_init); |