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 * All files in this archive are subject to the GNU General Public License.
18 * See the file COPYING in the source tree root for full license agreement.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 ****************************************************************************/
39 #include "usb-target.h"
43 #ifdef IRIVER_H300_SERIES
44 #include "pcf50606.h" /* for pcf50606_usb_charging_... */
48 /* Conditions under which we want the entire driver */
49 #if !defined(BOOTLOADER) || \
50 (defined(TOSHIBA_GIGABEAT_S) && defined(USE_ROCKBOX_USB) && defined(USB_STORAGE)) || \
51 (defined(CREATIVE_ZVx) && defined(HAVE_USBSTACK))
55 extern void dbg_ports(void); /* NASTY! defined in apps/ */
57 #ifdef HAVE_LCD_BITMAP
58 bool do_screendump_instead_of_usb
= false;
59 #if defined(USB_FULL_INIT) && defined(BOOTLOADER)
60 static void screen_dump(void) {}
62 void screen_dump(void); /* Nasty again. Defined in apps/ too */
66 #if !defined(SIMULATOR) && !defined(USB_NONE)
68 #define NUM_POLL_READINGS (HZ/5)
73 #if defined(HAVE_MMC) && defined(USB_FULL_INIT)
74 static int usb_mmc_countdown
= 0;
77 /* FIXME: The extra 0x800 is consumed by fat_mount() when the fsinfo
80 static long usb_stack
[(DEFAULT_STACK_SIZE
+ 0x800)/sizeof(long)];
81 static const char usb_thread_name
[] = "usb";
82 static struct thread_entry
*usb_thread_entry
;
84 static struct event_queue usb_queue
;
85 static int last_usb_status
;
86 static bool usb_monitor_enabled
;
88 static bool exclusive_ata_access
;
92 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
93 || defined(IPOD_MINI) || defined(IPOD_MINI2G)
94 static int firewire_countdown
;
95 static bool last_firewire_status
;
100 static void usb_slave_mode(bool on
)
106 DEBUGF("Entering USB slave mode\n");
114 DEBUGF("Leaving USB slave mode\n");
116 /* Let the ISDx00 settle */
124 /* fixme: can we remove this? (already such in main.c) */
127 snprintf(str
, 31, "ATA error: %d", rc
);
129 lcd_puts(0, 1, "Press ON to debug");
131 while(!(button_get(true) & BUTTON_REL
)) {};
133 panicf("ata: %d",rc
);
136 rc
= disk_mount_all();
137 if (rc
<= 0) /* no partition */
138 panicf("mount: %d",rc
);
144 static void try_reboot(void)
146 #ifndef HAVE_FLASH_STORAGE
147 ata_sleepnow(); /* Immediately spindown the disk. */
151 #ifdef IPOD_ARCH /* The following code is based on ipodlinux */
152 #if CONFIG_CPU == PP5020
153 memcpy((void *)0x40017f00, "diskmode\0\0hotstuff\0\0\1", 21);
154 #elif CONFIG_CPU == PP5022
155 memcpy((void *)0x4001ff00, "diskmode\0\0hotstuff\0\0\1", 21);
156 #endif /* CONFIG_CPU */
157 #endif /* IPOD_ARCH */
159 system_reboot(); /* Reboot */
162 static void usb_thread(void)
164 int num_acks_to_expect
= -1;
165 bool waiting_for_ack
;
166 struct queue_event ev
;
168 waiting_for_ack
= false;
172 queue_wait(&usb_queue
, &ev
);
175 #ifdef USB_DRIVER_CLOSE
180 case USB_TRANSFER_COMPLETION
:
181 usb_core_handle_transfer_completion((struct usb_transfer_completion_event_data
*)ev
.data
);
184 #ifdef HAVE_USB_POWER
186 usb_state
= USB_POWERED
;
190 #ifdef HAVE_LCD_BITMAP
191 if(do_screendump_instead_of_usb
)
197 #ifdef HAVE_USB_POWER
198 #if defined(IRIVER_H10) || defined (IRIVER_H10_5GB)
199 if((button_status() & ~USBPOWER_BTN_IGNORE
) != USBPOWER_BUTTON
)
201 if((button_status() & ~USBPOWER_BTN_IGNORE
) == USBPOWER_BUTTON
)
204 usb_state
= USB_POWERED
;
206 usb_core_enable_driver(USB_DRIVER_MASS_STORAGE
,false);
207 usb_core_enable_driver(USB_DRIVER_CHARGING_ONLY
,true);
215 /* Set the state to USB_POWERED for now. if a real
216 connection is detected it will switch to USB_INSERTED */
217 usb_state
= USB_POWERED
;
218 usb_core_enable_driver(USB_DRIVER_MASS_STORAGE
,true);
219 usb_core_enable_driver(USB_DRIVER_CHARGING_ONLY
,false);
222 /* Tell all threads that they have to back off the ATA.
223 We subtract one for our own thread. */
225 queue_broadcast(SYS_USB_CONNECTED
, 0) - 1;
226 waiting_for_ack
= true;
227 DEBUGF("USB inserted. Waiting for ack from %d threads...\n",
233 case USB_REQUEST_DISK
:
236 /* Tell all threads that they have to back off the ATA.
237 We subtract one for our own thread. */
239 queue_broadcast(SYS_USB_CONNECTED
, 0) - 1;
240 waiting_for_ack
= true;
241 DEBUGF("USB inserted. Waiting for ack from %d threads...\n",
245 case USB_RELEASE_DISK
:
248 /* Tell all threads that they have to back off the ATA.
249 We subtract one for our own thread. */
251 queue_broadcast(SYS_USB_DISCONNECTED
, 0) - 1;
252 waiting_for_ack
= true;
253 DEBUGF("USB inserted. Waiting for ack from %d threads...\n",
258 case SYS_USB_CONNECTED_ACK
:
261 num_acks_to_expect
--;
262 if(num_acks_to_expect
== 0)
264 DEBUGF("All threads have acknowledged the connect.\n");
266 #ifndef USE_ROCKBOX_USB
267 /* until we have native mass-storage mode, we want to reboot on
271 #endif /* USE_ROCKBOX_USB */
272 #ifdef HAVE_PRIORITY_SCHEDULING
273 thread_set_priority(usb_thread_entry
,PRIORITY_REALTIME
);
275 exclusive_ata_access
= true;
278 usb_slave_mode(true);
281 usb_state
= USB_INSERTED
;
282 waiting_for_ack
= false;
286 DEBUGF("usb: got ack, %d to go...\n",
295 #ifdef HAVE_PRIORITY_SCHEDULING
296 thread_set_priority(usb_thread_entry
,PRIORITY_SYSTEM
);
299 #ifdef HAVE_LCD_BITMAP
300 if(do_screendump_instead_of_usb
)
303 #ifdef HAVE_USB_POWER
304 if(usb_state
== USB_POWERED
)
306 usb_state
= USB_EXTRACTED
;
310 #ifndef HAVE_USBSTACK
311 if(usb_state
== USB_INSERTED
)
313 /* Only disable the USB mode if we really have enabled it
314 some threads might not have acknowledged the
316 usb_slave_mode(false);
317 cpu_idle_mode(false);
321 usb_state
= USB_EXTRACTED
;
323 if(exclusive_ata_access
)
325 exclusive_ata_access
= false;
327 /* Tell all threads that we are back in business */
329 queue_broadcast(SYS_USB_DISCONNECTED
, 0) - 1;
330 waiting_for_ack
= true;
331 DEBUGF("USB extracted. Waiting for ack from %d threads...\n",
338 case SYS_USB_DISCONNECTED_ACK
:
341 num_acks_to_expect
--;
342 if(num_acks_to_expect
== 0)
344 DEBUGF("All threads have acknowledged. "
345 "We're in business.\n");
346 waiting_for_ack
= false;
350 DEBUGF("usb: got ack, %d to go...\n",
357 case SYS_HOTSWAP_INSERTED
:
358 case SYS_HOTSWAP_EXTRACTED
:
360 usb_core_hotswap_event(1,ev
.id
== SYS_HOTSWAP_INSERTED
);
362 if(usb_state
== USB_INSERTED
)
365 usb_mmc_countdown
= HZ
/2; /* re-enable after 0.5 sec */
371 if(usb_state
== USB_INSERTED
)
372 usb_enable(true); /* reenable only if still inserted */
375 case USB_REQUEST_REBOOT
:
376 #ifdef HAVE_USB_POWER
377 if((button_status() & ~USBPOWER_BTN_IGNORE
) != USBPOWER_BUTTON
)
387 void usb_signal_transfer_completion(struct usb_transfer_completion_event_data
* event_data
)
389 queue_post(&usb_queue
, USB_TRANSFER_COMPLETION
, (intptr_t)event_data
);
394 static void usb_tick(void)
398 if(usb_monitor_enabled
)
400 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
401 || defined(IPOD_MINI) || defined(IPOD_MINI2G)
402 int current_firewire_status
= firewire_detect();
403 if(current_firewire_status
!= last_firewire_status
)
405 last_firewire_status
= current_firewire_status
;
406 firewire_countdown
= NUM_POLL_READINGS
;
410 /* Count down until it gets negative */
411 if(firewire_countdown
>= 0)
412 firewire_countdown
--;
414 /* Report to the thread if we have had 3 identical status
416 if(firewire_countdown
== 0)
418 queue_post(&usb_queue
, USB_REQUEST_REBOOT
, 0);
423 current_status
= usb_detect();
425 /* Only report when the status has changed */
426 if(current_status
!= last_usb_status
)
428 last_usb_status
= current_status
;
429 countdown
= NUM_POLL_READINGS
;
433 /* Count down until it gets negative */
437 /* Report to the thread if we have had 3 identical status
441 queue_post(&usb_queue
, current_status
, 0);
446 if(usb_mmc_countdown
> 0)
449 if (usb_mmc_countdown
== 0)
450 queue_post(&usb_queue
, USB_REENABLE
, 0);
456 void usb_acknowledge(long id
)
458 queue_post(&usb_queue
, id
, 0);
463 usb_state
= USB_EXTRACTED
;
465 exclusive_ata_access
= false;
467 usb_monitor_enabled
= false;
470 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
471 || defined(IPOD_MINI) || defined(IPOD_MINI2G)
472 firewire_countdown
= -1;
473 last_firewire_status
= false;
481 /* We assume that the USB cable is extracted */
482 last_usb_status
= USB_EXTRACTED
;
485 queue_init(&usb_queue
, true);
487 usb_thread_entry
= create_thread(usb_thread
, usb_stack
,
488 sizeof(usb_stack
), 0, usb_thread_name
489 IF_PRIO(, PRIORITY_SYSTEM
) IF_COP(, CPU
));
491 tick_add_task(usb_tick
);
496 void usb_wait_for_disconnect(struct event_queue
*q
)
498 struct queue_event ev
;
500 /* Don't return until we get SYS_USB_DISCONNECTED */
504 if(ev
.id
== SYS_USB_DISCONNECTED
)
506 usb_acknowledge(SYS_USB_DISCONNECTED_ACK
);
512 int usb_wait_for_disconnect_w_tmo(struct event_queue
*q
, int ticks
)
514 struct queue_event ev
;
516 /* Don't return until we get SYS_USB_DISCONNECTED or SYS_TIMEOUT */
519 queue_wait_w_tmo(q
, &ev
, ticks
);
522 case SYS_USB_DISCONNECTED
:
523 usb_acknowledge(SYS_USB_DISCONNECTED_ACK
);
533 void usb_start_monitoring(void)
535 usb_monitor_enabled
= true;
538 #ifdef USB_DRIVER_CLOSE
541 struct thread_entry
*thread
= usb_thread_entry
;
542 usb_thread_entry
= NULL
;
547 tick_remove_task(usb_tick
);
548 usb_monitor_enabled
= false;
550 queue_post(&usb_queue
, USB_QUIT
, 0);
553 #endif /* USB_DRIVER_CLOSE */
555 bool usb_inserted(void)
557 #ifdef HAVE_USB_POWER
558 return usb_state
== USB_INSERTED
|| usb_state
== USB_POWERED
;
560 return usb_state
== USB_INSERTED
;
565 void usb_request_exclusive_ata(void)
567 /* This is not really a clean place to start boosting the cpu. but it's
568 * currently the best one. We want to get rid of having to boost the cpu
571 if(!exclusive_ata_access
) {
572 queue_post(&usb_queue
, USB_REQUEST_DISK
, 0);
576 void usb_release_exclusive_ata(void)
579 if(exclusive_ata_access
) {
580 queue_post(&usb_queue
, USB_RELEASE_DISK
, 0);
581 exclusive_ata_access
= false;
585 bool usb_exclusive_ata(void)
587 return exclusive_ata_access
;
591 #ifdef HAVE_USB_POWER
592 bool usb_powered(void)
594 return usb_state
== USB_POWERED
;
598 bool usb_charging_enable(bool on
)
601 #ifdef IRIVER_H300_SERIES
603 logf("usb_charging_enable(%s)\n", on
? "on" : "off" );
604 irqlevel
= disable_irq_save();
605 pcf50606_set_usb_charging(on
);
607 restore_irq(irqlevel
);
609 /* TODO: implement it for other targets... */
615 bool usb_charging_enabled(void)
618 #ifdef IRIVER_H300_SERIES
619 /* TODO: read the state of the GPOOD2 register...
620 * (this also means to set the irq level here) */
621 rc
= pcf50606_usb_charging_enabled();
623 /* TODO: implement it for other targets... */
626 logf("usb charging %s", rc
? "enabled" : "disabled" );
635 bool usb_inserted(void)
641 /* Dummy simulator functions */
642 void usb_acknowledge(long id
)
651 void usb_start_monitoring(void)
657 return USB_EXTRACTED
;
660 void usb_wait_for_disconnect(struct event_queue
*q
)
665 #endif /* USB_NONE or SIMULATOR */