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/*
* Entry point for USBD service, that handles USB HCDs
*/
#include <ddekit/ddekit.h> /* ddekit_init */
#include <ddekit/thread.h> /* DDEKit threading */
#include <libdde/usb_server.h> /* DDEKit USB server */
#include <minix/devman.h> /* Initializing 'devman' */
#include <minix/sef.h> /* SEF handling */
#include <usbd/usbd_common.h>
#include <usbd/usbd_interface.h>
#include <usbd/usbd_schedule.h>
/*===========================================================================*
* Local declarations *
*===========================================================================*/
static int usbd_sef_handler(int, sef_init_info_t *);
static void usbd_signal_handler(int);
static int usbd_start(void);
static void usbd_init(void);
static void usbd_server_thread(void *);
/* TODO: No headers for these... */
extern void ddekit_minix_wait_exit(void); /* dde.c */
extern void ddekit_shutdown(void); /* dde.c */
/*===========================================================================*
* main *
*===========================================================================*/
int
main(int UNUSED(argc), char * UNUSED(argv[]))
{
int ret_val;
USB_MSG("Starting USBD");
USB_MSG("Built: %s %s", __DATE__, __TIME__);
/* Basic SEF,DDE,... initialization */
usbd_init();
/* Assume failure unless usbd_start exits gracefully */
ret_val = EXIT_FAILURE;
/* USB host controllers initialization */
if (EXIT_SUCCESS == usbd_init_hcd()) {
/* Try initializing 'devman' */
if (EXIT_SUCCESS == devman_init()) {
/* Run USB driver (actually DDEKit threads)
* until this call returns: */
ret_val = usbd_start();
} else
USB_MSG("Initializing devman, failed");
/* Clean whatever was initialized */
usbd_deinit_hcd();
} else
USB_MSG("Initializing HCDs, failed");
return ret_val;
}
/*===========================================================================*
* usbd_sef_handler *
*===========================================================================*/
static int
usbd_sef_handler(int type, sef_init_info_t * UNUSED(info))
{
/* No DEBUG_DUMP, threading unavailable yet */
switch (type) {
case SEF_INIT_FRESH:
USB_MSG("Initializing");
return EXIT_SUCCESS;
case SEF_INIT_LU:
USB_MSG("Updating, not implemented");
return EXIT_FAILURE;
case SEF_INIT_RESTART:
USB_MSG("Restarting, not implemented");
return EXIT_FAILURE;
default:
USB_MSG("illegal SEF type");
return EXIT_FAILURE;
}
}
/*===========================================================================*
* usbd_signal_handler *
*===========================================================================*/
static void
usbd_signal_handler(int UNUSED(signo))
{
DEBUG_DUMP;
USB_MSG("Signal received, exiting USBD...");
/* Try graceful DDEKit exit */
ddekit_shutdown();
/* Unreachable, when ddekit_shutdown works correctly */
USB_ASSERT(0, "Calling ddekit_shutdown failed!");
}
/*===========================================================================*
* usbd_start *
*===========================================================================*/
static int
usbd_start(void)
{
ddekit_thread_t * usbd_th;
DEBUG_DUMP;
/* Driver's "main loop" is within DDEKit server thread */
usbd_th = ddekit_thread_create(usbd_server_thread, NULL, "ddekit_usb");
/* After spawning, allow server thread to work */
if (NULL != usbd_th) {
/* Allow URB scheduling */
if (usbd_init_scheduler()) {
USB_MSG("Failed to start URB scheduler");
} else {
/* This will lock current thread until DDEKit exits */
ddekit_minix_wait_exit();
}
/* Disallow URB scheduling */
usbd_deinit_scheduler();
/* Cleanup */
ddekit_thread_terminate(usbd_th);
return EXIT_SUCCESS;
} else
return EXIT_FAILURE;
}
/*===========================================================================*
* usbd_init *
*===========================================================================*/
static void
usbd_init(void)
{
/* No DEBUG_DUMP, threading unavailable yet */
/* Set one handler for all messages */
sef_setcb_init_fresh(usbd_sef_handler);
sef_setcb_init_lu(usbd_sef_handler);
sef_setcb_init_restart(usbd_sef_handler);
/* Initialize DDEkit (involves sef_startup()) */
ddekit_init();
/* After threading initialization, add signal handler */
sef_setcb_signal_handler(usbd_signal_handler);
}
/*===========================================================================*
* usbd_server_thread *
*===========================================================================*/
static void
usbd_server_thread(void * UNUSED(unused))
{
DEBUG_DUMP;
ddekit_usb_server_init();
}
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