82 lines
2.9 KiB
C
82 lines
2.9 KiB
C
|
#include "floppy.h"
|
||
|
|
|
||
|
|
/* State management variables. */
|
||
|
|
EXTERN u16_t f_busy;
|
||
|
|
EXTERN int motor_status;
|
||
|
|
EXTERN unsigned f_drive;
|
||
|
|
EXTERN int last_transfer_opcode;
|
||
|
|
#define BSY_IO 1 /* busy doing I/O */
|
||
|
|
|
||
|
|
/* State management helpers. */
|
||
|
|
#define IS_REQUEST_PENDING(b) ((b) == BSY_IO)
|
||
|
|
#define IS_READ_PENDING(b, c) \
|
||
|
|
(IS_REQUEST_PENDING((b)) && (c) == DEV_GATHER_S)
|
||
|
|
#define IS_WRITE_PENDING(b, c) \
|
||
|
|
(IS_REQUEST_PENDING((b)) && (c) == DEV_SCATTER_S)
|
||
|
|
#define IS_MOTOR_RUNNING(s, d) ((s) & (1 << (d)))
|
||
|
|
|
||
|
|
/* Custom states definition. */
|
||
|
|
#define FL_STATE_MOTOR_OFF (SEF_LU_STATE_CUSTOM_BASE + 0)
|
||
|
|
#define FL_STATE_IS_CUSTOM(s) ((s) == FL_STATE_MOTOR_OFF)
|
||
|
|
|
||
|
|
/*===========================================================================*
|
||
|
|
* sef_cb_lu_prepare *
|
||
|
|
*===========================================================================*/
|
||
|
|
PUBLIC void 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:
|
||
|
|
case SEF_LU_STATE_PROTOCOL_FREE:
|
||
|
|
is_ready = (!IS_REQUEST_PENDING(f_busy));
|
||
|
|
break;
|
||
|
|
|
||
|
|
/* Custom states. */
|
||
|
|
case FL_STATE_MOTOR_OFF:
|
||
|
|
is_ready = (!IS_REQUEST_PENDING(f_busy)
|
||
|
|
&& !IS_MOTOR_RUNNING(motor_status, f_drive));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Tell SEF if we are ready. */
|
||
|
|
if(is_ready) {
|
||
|
|
sef_lu_ready(OK);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*===========================================================================*
|
||
|
|
* sef_cb_lu_state_isvalid *
|
||
|
|
*===========================================================================*/
|
||
|
|
PUBLIC int sef_cb_lu_state_isvalid(int state)
|
||
|
|
{
|
||
|
|
return SEF_LU_STATE_IS_STANDARD(state) || FL_STATE_IS_CUSTOM(state);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*===========================================================================*
|
||
|
|
* sef_cb_lu_state_dump *
|
||
|
|
*===========================================================================*/
|
||
|
|
PUBLIC void sef_cb_lu_state_dump(int state)
|
||
|
|
{
|
||
|
|
sef_lu_dprint("floppy: live update state = %d\n", state);
|
||
|
|
sef_lu_dprint("floppy: f_busy = %d\n", f_busy);
|
||
|
|
sef_lu_dprint("floppy: motor_status = 0x%02X\n", motor_status);
|
||
|
|
sef_lu_dprint("floppy: f_drive = %d\n", f_drive);
|
||
|
|
sef_lu_dprint("floppy: last_transfer_opcode = 0x%02X\n",
|
||
|
|
last_transfer_opcode);
|
||
|
|
|
||
|
|
sef_lu_dprint("floppy: SEF_LU_STATE_WORK_FREE(%d) reached = %d\n",
|
||
|
|
SEF_LU_STATE_WORK_FREE, TRUE);
|
||
|
|
sef_lu_dprint("floppy: SEF_LU_STATE_REQUEST_FREE(%d) reached = %d\n",
|
||
|
|
SEF_LU_STATE_REQUEST_FREE, (!IS_REQUEST_PENDING(f_busy)));
|
||
|
|
sef_lu_dprint("floppy: SEF_LU_STATE_PROTOCOL_FREE(%d) reached = %d\n",
|
||
|
|
SEF_LU_STATE_PROTOCOL_FREE, (!IS_REQUEST_PENDING(f_busy)));
|
||
|
|
sef_lu_dprint("floppy: FL_STATE_MOTOR_OFF(%d) reached = %d\n",
|
||
|
|
FL_STATE_MOTOR_OFF, (!IS_REQUEST_PENDING(f_busy)
|
||
|
|
&& !IS_MOTOR_RUNNING(motor_status, f_drive)));
|
||
|
|
}
|
||
|
|
|