minix/drivers/sb16/sb16_dsp_liveupdate.c

68 lines
2.4 KiB
C

#include "sb16.h"
/* State management variables. */
EXTERN int is_processing;
EXTERN int is_status_msg_expected;
/* Custom states definition. */
#define SB16_STATE_PROCESSING_PROTOCOL_FREE (SEF_LU_STATE_CUSTOM_BASE + 0)
#define SB16_STATE_IS_CUSTOM(s) \
((s) == SB16_STATE_PROCESSING_PROTOCOL_FREE)
/*===========================================================================*
* sef_cb_lu_prepare *
*===========================================================================*/
PUBLIC int sef_cb_lu_prepare(int state)
{
int is_ready;
/* Check if we are ready for the target state. */
is_ready = FALSE;
switch(state) {
/* Standard states. */
case SEF_LU_STATE_REQUEST_FREE:
is_ready = TRUE;
break;
case SEF_LU_STATE_PROTOCOL_FREE:
is_ready = (!is_processing && !is_status_msg_expected);
break;
/* Custom states. */
case SB16_STATE_PROCESSING_PROTOCOL_FREE:
is_ready = (!is_processing);
break;
}
/* Tell SEF if we are ready. */
return is_ready ? OK : ENOTREADY;
}
/*===========================================================================*
* sef_cb_lu_state_isvalid *
*===========================================================================*/
PUBLIC int sef_cb_lu_state_isvalid(int state)
{
return SEF_LU_STATE_IS_STANDARD(state) || SB16_STATE_IS_CUSTOM(state);
}
/*===========================================================================*
* sef_cb_lu_state_dump *
*===========================================================================*/
PUBLIC void sef_cb_lu_state_dump(int state)
{
sef_lu_dprint("sb16: live update state = %d\n", state);
sef_lu_dprint("sb16: is_processing = %d\n", is_processing);
sef_lu_dprint("sb16: is_status_msg_expected = %d\n",
is_status_msg_expected);
sef_lu_dprint("sb16: SEF_LU_STATE_WORK_FREE(%d) reached = %d\n",
SEF_LU_STATE_WORK_FREE, TRUE);
sef_lu_dprint("sb16: SEF_LU_STATE_REQUEST_FREE(%d) reached = %d\n",
SEF_LU_STATE_REQUEST_FREE, TRUE);
sef_lu_dprint("sb16: SEF_LU_STATE_PROTOCOL_FREE(%d) reached = %d\n",
SEF_LU_STATE_PROTOCOL_FREE, (!is_processing && !is_status_msg_expected));
sef_lu_dprint("sb16: SB16_STATE_PROCESSING_PROTOCOL_FREE(%d) reached = %d\n",
SB16_STATE_PROCESSING_PROTOCOL_FREE, (!is_processing));
}