97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/* Code left here for historical purposes only. TODO: move into libnetdriver */
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#include "rtl8139.h"
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/* State management variables. */
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EXTERN re_t re_state;
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/* Custom states definition. */
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#define RL_STATE_READ_PROTOCOL_FREE (SEF_LU_STATE_CUSTOM_BASE + 0)
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#define RL_STATE_WRITE_PROTOCOL_FREE (SEF_LU_STATE_CUSTOM_BASE + 1)
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#define RL_STATE_IS_CUSTOM(s) \
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((s) >= RL_STATE_READ_PROTOCOL_FREE && (s) <= RL_STATE_WRITE_PROTOCOL_FREE)
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/* State management helpers. */
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static int is_reading;
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static int is_writing;
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static void load_state_info(void)
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{
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re_t *rep;
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/* Check if we are reading or writing. */
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rep = &re_state;
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is_reading = !!(rep->re_flags & REF_READING);
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is_writing = !!(rep->re_flags & REF_SEND_AVAIL);
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}
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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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/* Load state information. */
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load_state_info();
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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 = (!is_reading && !is_writing);
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break;
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/* Custom states. */
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case RL_STATE_READ_PROTOCOL_FREE:
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is_ready = (!is_reading);
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break;
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case RL_STATE_WRITE_PROTOCOL_FREE:
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is_ready = (!is_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) || RL_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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/* Load state information. */
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load_state_info();
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sef_lu_dprint("rtl8139: live update state = %d\n", state);
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sef_lu_dprint("rtl8139: is_reading = %d\n", is_reading);
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sef_lu_dprint("rtl8139: is_writing = %d\n", is_writing);
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sef_lu_dprint("rtl8139: 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("rtl8139: 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("rtl8139: SEF_LU_STATE_PROTOCOL_FREE(%d) reached = %d\n",
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SEF_LU_STATE_PROTOCOL_FREE, (!is_reading && !is_writing));
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sef_lu_dprint("rtl8139: RL_STATE_READ_PROTOCOL_FREE(%d) reached = %d\n",
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RL_STATE_READ_PROTOCOL_FREE, (!is_reading));
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sef_lu_dprint("rtl8139: RL_STATE_WRITE_PROTOCOL_FREE(%d) reached = %d\n",
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RL_STATE_WRITE_PROTOCOL_FREE, (!is_writing));
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}
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