1 /***************************************************************************
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
10 * Copyright (C) 2002 by Linus Nielsen Feltzing
12 * iPod driver based on code from the ipodlinux project - http://ipodlinux.org
13 * Adapted for Rockbox in January 2006
14 * Original file: podzilla/usb.c
15 * Copyright (C) 2005 Adam Johnston
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License
19 * as published by the Free Software Foundation; either version 2
20 * of the License, or (at your option) any later version.
22 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
23 * KIND, either express or implied.
25 ****************************************************************************/
41 #include "usb-target.h"
45 #ifdef IRIVER_H300_SERIES
46 #include "pcf50606.h" /* for pcf50606_usb_charging_... */
50 /* Conditions under which we want the entire driver */
51 #if !defined(BOOTLOADER) || \
52 (defined(TOSHIBA_GIGABEAT_S) && defined(USE_ROCKBOX_USB) && defined(USB_STORAGE)) || \
53 (defined(CREATIVE_ZVx) && defined(HAVE_USBSTACK))
57 extern void dbg_ports(void); /* NASTY! defined in apps/ */
59 #ifdef HAVE_LCD_BITMAP
60 bool do_screendump_instead_of_usb
= false;
61 #if defined(USB_FULL_INIT) && defined(BOOTLOADER)
62 static void screen_dump(void) {}
64 void screen_dump(void); /* Nasty again. Defined in apps/ too */
68 #if !defined(SIMULATOR) && !defined(USB_NONE)
70 #define NUM_POLL_READINGS (HZ/5)
75 #if defined(HAVE_MMC) && defined(USB_FULL_INIT)
76 static int usb_mmc_countdown
= 0;
79 /* FIXME: The extra 0x800 is consumed by fat_mount() when the fsinfo
82 static long usb_stack
[(DEFAULT_STACK_SIZE
+ 0x800)/sizeof(long)];
83 static const char usb_thread_name
[] = "usb";
84 static struct thread_entry
*usb_thread_entry
;
86 static struct event_queue usb_queue
;
87 static int last_usb_status
;
88 static bool usb_monitor_enabled
;
90 static bool exclusive_ata_access
;
94 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
95 || defined(IPOD_MINI) || defined(IPOD_MINI2G)
96 static int firewire_countdown
;
97 static bool last_firewire_status
;
101 #ifndef HAVE_USBSTACK
102 static void usb_slave_mode(bool on
)
108 DEBUGF("Entering USB slave mode\n");
116 DEBUGF("Leaving USB slave mode\n");
118 /* Let the ISDx00 settle */
126 /* fixme: can we remove this? (already such in main.c) */
129 snprintf(str
, 31, "ATA error: %d", rc
);
131 lcd_puts(0, 1, "Press ON to debug");
133 while(!(button_get(true) & BUTTON_REL
)) {};
135 panicf("ata: %d",rc
);
138 rc
= disk_mount_all();
139 if (rc
<= 0) /* no partition */
140 panicf("mount: %d",rc
);
146 static void try_reboot(void)
148 #ifndef HAVE_FLASH_STORAGE
149 ata_sleepnow(); /* Immediately spindown the disk. */
153 #ifdef IPOD_ARCH /* The following code is based on ipodlinux */
154 #if CONFIG_CPU == PP5020
155 memcpy((void *)0x40017f00, "diskmode\0\0hotstuff\0\0\1", 21);
156 #elif CONFIG_CPU == PP5022
157 memcpy((void *)0x4001ff00, "diskmode\0\0hotstuff\0\0\1", 21);
158 #endif /* CONFIG_CPU */
159 #endif /* IPOD_ARCH */
161 system_reboot(); /* Reboot */
164 static void usb_thread(void)
166 int num_acks_to_expect
= -1;
167 bool waiting_for_ack
;
168 struct queue_event ev
;
170 waiting_for_ack
= false;
174 queue_wait(&usb_queue
, &ev
);
177 #ifdef USB_DRIVER_CLOSE
182 case USB_TRANSFER_COMPLETION
:
183 usb_core_handle_transfer_completion((struct usb_transfer_completion_event_data
*)ev
.data
);
186 #ifdef HAVE_USB_POWER
188 usb_state
= USB_POWERED
;
192 #ifdef HAVE_LCD_BITMAP
193 if(do_screendump_instead_of_usb
)
199 #ifdef HAVE_USB_POWER
200 #if defined(IRIVER_H10) || defined (IRIVER_H10_5GB)
201 if((button_status() & ~USBPOWER_BTN_IGNORE
) != USBPOWER_BUTTON
)
203 if((button_status() & ~USBPOWER_BTN_IGNORE
) == USBPOWER_BUTTON
)
206 usb_state
= USB_POWERED
;
208 usb_core_enable_driver(USB_DRIVER_MASS_STORAGE
,false);
209 usb_core_enable_driver(USB_DRIVER_CHARGING_ONLY
,true);
217 /* Set the state to USB_POWERED for now. if a real
218 connection is detected it will switch to USB_INSERTED */
219 usb_state
= USB_POWERED
;
220 usb_core_enable_driver(USB_DRIVER_MASS_STORAGE
,true);
221 usb_core_enable_driver(USB_DRIVER_CHARGING_ONLY
,false);
224 /* Tell all threads that they have to back off the ATA.
225 We subtract one for our own thread. */
227 queue_broadcast(SYS_USB_CONNECTED
, 0) - 1;
228 waiting_for_ack
= true;
229 DEBUGF("USB inserted. Waiting for ack from %d threads...\n",
235 case USB_REQUEST_DISK
:
238 /* Tell all threads that they have to back off the ATA.
239 We subtract one for our own thread. */
241 queue_broadcast(SYS_USB_CONNECTED
, 0) - 1;
242 waiting_for_ack
= true;
243 DEBUGF("USB inserted. Waiting for ack from %d threads...\n",
247 case USB_RELEASE_DISK
:
250 /* Tell all threads that they have to back off the ATA.
251 We subtract one for our own thread. */
253 queue_broadcast(SYS_USB_DISCONNECTED
, 0) - 1;
254 waiting_for_ack
= true;
255 DEBUGF("USB inserted. Waiting for ack from %d threads...\n",
260 case SYS_USB_CONNECTED_ACK
:
263 num_acks_to_expect
--;
264 if(num_acks_to_expect
== 0)
266 DEBUGF("All threads have acknowledged the connect.\n");
268 #ifndef USE_ROCKBOX_USB
269 /* until we have native mass-storage mode, we want to reboot on
273 #endif /* USE_ROCKBOX_USB */
274 #ifdef HAVE_PRIORITY_SCHEDULING
275 thread_set_priority(usb_thread_entry
,PRIORITY_REALTIME
);
277 exclusive_ata_access
= true;
280 usb_slave_mode(true);
283 usb_state
= USB_INSERTED
;
284 waiting_for_ack
= false;
288 DEBUGF("usb: got ack, %d to go...\n",
297 #ifdef HAVE_PRIORITY_SCHEDULING
298 thread_set_priority(usb_thread_entry
,PRIORITY_SYSTEM
);
301 #ifdef HAVE_LCD_BITMAP
302 if(do_screendump_instead_of_usb
)
305 #ifdef HAVE_USB_POWER
306 if(usb_state
== USB_POWERED
)
308 usb_state
= USB_EXTRACTED
;
312 #ifndef HAVE_USBSTACK
313 if(usb_state
== USB_INSERTED
)
315 /* Only disable the USB mode if we really have enabled it
316 some threads might not have acknowledged the
318 usb_slave_mode(false);
319 cpu_idle_mode(false);
323 usb_state
= USB_EXTRACTED
;
325 if(exclusive_ata_access
)
327 int rc
= disk_mount_all();
328 if (rc
<= 0) /* no partition */
329 panicf("mount: %d",rc
);
330 exclusive_ata_access
= false;
332 /* Tell all threads that we are back in business */
334 queue_broadcast(SYS_USB_DISCONNECTED
, 0) - 1;
335 waiting_for_ack
= true;
336 DEBUGF("USB extracted. Waiting for ack from %d threads...\n",
343 case SYS_USB_DISCONNECTED_ACK
:
346 num_acks_to_expect
--;
347 if(num_acks_to_expect
== 0)
349 DEBUGF("All threads have acknowledged. "
350 "We're in business.\n");
351 waiting_for_ack
= false;
355 DEBUGF("usb: got ack, %d to go...\n",
362 case SYS_HOTSWAP_INSERTED
:
363 case SYS_HOTSWAP_EXTRACTED
:
365 usb_core_hotswap_event(1,ev
.id
== SYS_HOTSWAP_INSERTED
);
367 if(usb_state
== USB_INSERTED
)
370 usb_mmc_countdown
= HZ
/2; /* re-enable after 0.5 sec */
376 if(usb_state
== USB_INSERTED
)
377 usb_enable(true); /* reenable only if still inserted */
379 #endif /* HAVE_HOTSWAP */
380 case USB_REQUEST_REBOOT
:
381 #ifdef HAVE_USB_POWER
382 if((button_status() & ~USBPOWER_BTN_IGNORE
) != USBPOWER_BUTTON
)
392 void usb_signal_transfer_completion(struct usb_transfer_completion_event_data
* event_data
)
394 queue_post(&usb_queue
, USB_TRANSFER_COMPLETION
, (intptr_t)event_data
);
399 static void usb_tick(void)
403 if(usb_monitor_enabled
)
405 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
406 || defined(IPOD_MINI) || defined(IPOD_MINI2G)
407 int current_firewire_status
= firewire_detect();
408 if(current_firewire_status
!= last_firewire_status
)
410 last_firewire_status
= current_firewire_status
;
411 firewire_countdown
= NUM_POLL_READINGS
;
415 /* Count down until it gets negative */
416 if(firewire_countdown
>= 0)
417 firewire_countdown
--;
419 /* Report to the thread if we have had 3 identical status
421 if(firewire_countdown
== 0)
423 queue_post(&usb_queue
, USB_REQUEST_REBOOT
, 0);
428 current_status
= usb_detect();
430 /* Only report when the status has changed */
431 if(current_status
!= last_usb_status
)
433 last_usb_status
= current_status
;
434 countdown
= NUM_POLL_READINGS
;
438 /* Count down until it gets negative */
442 /* Report to the thread if we have had 3 identical status
446 queue_post(&usb_queue
, current_status
, 0);
451 if(usb_mmc_countdown
> 0)
454 if (usb_mmc_countdown
== 0)
455 queue_post(&usb_queue
, USB_REENABLE
, 0);
461 void usb_acknowledge(long id
)
463 queue_post(&usb_queue
, id
, 0);
468 usb_state
= USB_EXTRACTED
;
470 exclusive_ata_access
= false;
472 usb_monitor_enabled
= false;
475 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
476 || defined(IPOD_MINI) || defined(IPOD_MINI2G)
477 firewire_countdown
= -1;
478 last_firewire_status
= false;
486 /* We assume that the USB cable is extracted */
487 last_usb_status
= USB_EXTRACTED
;
490 queue_init(&usb_queue
, true);
492 usb_thread_entry
= create_thread(usb_thread
, usb_stack
,
493 sizeof(usb_stack
), 0, usb_thread_name
494 IF_PRIO(, PRIORITY_SYSTEM
) IF_COP(, CPU
));
496 tick_add_task(usb_tick
);
501 void usb_wait_for_disconnect(struct event_queue
*q
)
503 struct queue_event ev
;
505 /* Don't return until we get SYS_USB_DISCONNECTED */
509 if(ev
.id
== SYS_USB_DISCONNECTED
)
511 usb_acknowledge(SYS_USB_DISCONNECTED_ACK
);
517 int usb_wait_for_disconnect_w_tmo(struct event_queue
*q
, int ticks
)
519 struct queue_event ev
;
521 /* Don't return until we get SYS_USB_DISCONNECTED or SYS_TIMEOUT */
524 queue_wait_w_tmo(q
, &ev
, ticks
);
527 case SYS_USB_DISCONNECTED
:
528 usb_acknowledge(SYS_USB_DISCONNECTED_ACK
);
538 void usb_start_monitoring(void)
540 usb_monitor_enabled
= true;
543 #ifdef USB_DRIVER_CLOSE
546 struct thread_entry
*thread
= usb_thread_entry
;
547 usb_thread_entry
= NULL
;
552 tick_remove_task(usb_tick
);
553 usb_monitor_enabled
= false;
555 queue_post(&usb_queue
, USB_QUIT
, 0);
558 #endif /* USB_DRIVER_CLOSE */
560 bool usb_inserted(void)
562 #ifdef HAVE_USB_POWER
563 return usb_state
== USB_INSERTED
|| usb_state
== USB_POWERED
;
565 return usb_state
== USB_INSERTED
;
570 void usb_request_exclusive_ata(void)
572 /* This is not really a clean place to start boosting the cpu. but it's
573 * currently the best one. We want to get rid of having to boost the cpu
576 if(!exclusive_ata_access
) {
577 queue_post(&usb_queue
, USB_REQUEST_DISK
, 0);
581 void usb_release_exclusive_ata(void)
584 if(exclusive_ata_access
) {
585 queue_post(&usb_queue
, USB_RELEASE_DISK
, 0);
586 exclusive_ata_access
= false;
590 bool usb_exclusive_ata(void)
592 return exclusive_ata_access
;
596 #ifdef HAVE_USB_POWER
597 bool usb_powered(void)
599 return usb_state
== USB_POWERED
;
603 bool usb_charging_enable(bool on
)
606 #ifdef IRIVER_H300_SERIES
608 logf("usb_charging_enable(%s)\n", on
? "on" : "off" );
609 irqlevel
= disable_irq_save();
610 pcf50606_set_usb_charging(on
);
612 restore_irq(irqlevel
);
614 /* TODO: implement it for other targets... */
620 bool usb_charging_enabled(void)
623 #ifdef IRIVER_H300_SERIES
624 /* TODO: read the state of the GPOOD2 register...
625 * (this also means to set the irq level here) */
626 rc
= pcf50606_usb_charging_enabled();
628 /* TODO: implement it for other targets... */
631 logf("usb charging %s", rc
? "enabled" : "disabled" );
640 bool usb_inserted(void)
646 /* Dummy simulator functions */
647 void usb_acknowledge(long id
)
656 void usb_start_monitoring(void)
662 return USB_EXTRACTED
;
665 void usb_wait_for_disconnect(struct event_queue
*q
)
670 #endif /* USB_NONE or SIMULATOR */