68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
#include <minix/drivers.h>
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/* State management variables. */
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EXTERN int writing;
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EXTERN int is_status_msg_expected;
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/* Custom states definition. */
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#define PR_STATE_WRITE_PROTOCOL_FREE (SEF_LU_STATE_CUSTOM_BASE + 0)
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#define PR_STATE_IS_CUSTOM(s) ((s) == PR_STATE_WRITE_PROTOCOL_FREE)
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/*===========================================================================*
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* sef_cb_lu_prepare *
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*===========================================================================*/
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int sef_cb_lu_prepare(int state)
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{
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int is_ready;
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/* Check if we are ready for the target state. */
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is_ready = FALSE;
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switch(state) {
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/* Standard states. */
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case SEF_LU_STATE_REQUEST_FREE:
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is_ready = TRUE;
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break;
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case SEF_LU_STATE_PROTOCOL_FREE:
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is_ready = (!writing && !is_status_msg_expected);
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break;
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/* Custom states. */
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case PR_STATE_WRITE_PROTOCOL_FREE:
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is_ready = (!writing);
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break;
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}
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/* Tell SEF if we are ready. */
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return is_ready ? OK : ENOTREADY;
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}
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/*===========================================================================*
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* sef_cb_lu_state_isvalid *
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*===========================================================================*/
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int sef_cb_lu_state_isvalid(int state)
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{
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return SEF_LU_STATE_IS_STANDARD(state) || PR_STATE_IS_CUSTOM(state);
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}
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/*===========================================================================*
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* sef_cb_lu_state_dump *
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*===========================================================================*/
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void sef_cb_lu_state_dump(int state)
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{
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sef_lu_dprint("printer: live update state = %d\n", state);
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sef_lu_dprint("printer: writing = %d\n", writing);
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sef_lu_dprint("printer: is_status_msg_expected = %d\n",
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is_status_msg_expected);
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sef_lu_dprint("printer: SEF_LU_STATE_WORK_FREE(%d) reached = %d\n",
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SEF_LU_STATE_WORK_FREE, TRUE);
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sef_lu_dprint("printer: SEF_LU_STATE_REQUEST_FREE(%d) reached = %d\n",
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SEF_LU_STATE_REQUEST_FREE, TRUE);
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sef_lu_dprint("printer: SEF_LU_STATE_PROTOCOL_FREE(%d) reached = %d\n",
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SEF_LU_STATE_PROTOCOL_FREE, (!writing && !is_status_msg_expected));
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sef_lu_dprint("printer: PR_STATE_WRITE_PROTOCOL_FREE(%d) reached = %d\n",
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PR_STATE_WRITE_PROTOCOL_FREE, (!writing));
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}
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