1 /* Code left here for historical purposes only. TODO: move into libnetdriver */ 2 3 #include "rtl8139.h" 4 5 /* State management variables. */ 6 EXTERN re_t re_state; 7 8 /* Custom states definition. */ 9 #define RL_STATE_READ_PROTOCOL_FREE (SEF_LU_STATE_CUSTOM_BASE + 0) 10 #define RL_STATE_WRITE_PROTOCOL_FREE (SEF_LU_STATE_CUSTOM_BASE + 1) 11 #define RL_STATE_IS_CUSTOM(s) \ 12 ((s) >= RL_STATE_READ_PROTOCOL_FREE && (s) <= RL_STATE_WRITE_PROTOCOL_FREE) 13 14 /* State management helpers. */ 15 static int is_reading; 16 static int is_writing; 17 18 static void load_state_info(void) 19 { 20 re_t *rep; 21 22 /* Check if we are reading or writing. */ 23 rep = &re_state; 24 25 is_reading = !!(rep->re_flags & REF_READING); 26 is_writing = !!(rep->re_flags & REF_SEND_AVAIL); 27 } 28 29 /*===========================================================================* 30 * sef_cb_lu_prepare * 31 *===========================================================================*/ 32 int sef_cb_lu_prepare(int state) 33 { 34 int is_ready; 35 36 /* Load state information. */ 37 load_state_info(); 38 39 /* Check if we are ready for the target state. */ 40 is_ready = FALSE; 41 switch(state) { 42 /* Standard states. */ 43 case SEF_LU_STATE_REQUEST_FREE: 44 is_ready = TRUE; 45 break; 46 47 case SEF_LU_STATE_PROTOCOL_FREE: 48 is_ready = (!is_reading && !is_writing); 49 break; 50 51 /* Custom states. */ 52 case RL_STATE_READ_PROTOCOL_FREE: 53 is_ready = (!is_reading); 54 break; 55 56 case RL_STATE_WRITE_PROTOCOL_FREE: 57 is_ready = (!is_writing); 58 break; 59 } 60 61 /* Tell SEF if we are ready. */ 62 return is_ready ? OK : ENOTREADY; 63 } 64 65 /*===========================================================================* 66 * sef_cb_lu_state_isvalid * 67 *===========================================================================*/ 68 int sef_cb_lu_state_isvalid(int state) 69 { 70 return SEF_LU_STATE_IS_STANDARD(state) || RL_STATE_IS_CUSTOM(state); 71 } 72 73 /*===========================================================================* 74 * sef_cb_lu_state_dump * 75 *===========================================================================*/ 76 void sef_cb_lu_state_dump(int state) 77 { 78 /* Load state information. */ 79 load_state_info(); 80 81 sef_lu_dprint("rtl8139: live update state = %d\n", state); 82 sef_lu_dprint("rtl8139: is_reading = %d\n", is_reading); 83 sef_lu_dprint("rtl8139: is_writing = %d\n", is_writing); 84 85 sef_lu_dprint("rtl8139: SEF_LU_STATE_WORK_FREE(%d) reached = %d\n", 86 SEF_LU_STATE_WORK_FREE, TRUE); 87 sef_lu_dprint("rtl8139: SEF_LU_STATE_REQUEST_FREE(%d) reached = %d\n", 88 SEF_LU_STATE_REQUEST_FREE, TRUE); 89 sef_lu_dprint("rtl8139: SEF_LU_STATE_PROTOCOL_FREE(%d) reached = %d\n", 90 SEF_LU_STATE_PROTOCOL_FREE, (!is_reading && !is_writing)); 91 sef_lu_dprint("rtl8139: RL_STATE_READ_PROTOCOL_FREE(%d) reached = %d\n", 92 RL_STATE_READ_PROTOCOL_FREE, (!is_reading)); 93 sef_lu_dprint("rtl8139: RL_STATE_WRITE_PROTOCOL_FREE(%d) reached = %d\n", 94 RL_STATE_WRITE_PROTOCOL_FREE, (!is_writing)); 95 } 96 97