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
load_state_info(void)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 *===========================================================================*/
sef_cb_lu_prepare(int state)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 *===========================================================================*/
sef_cb_lu_state_isvalid(int state,int UNUSED (flags))68 int sef_cb_lu_state_isvalid(int state, int UNUSED(flags))
69 {
70 return SEF_LU_STATE_IS_STANDARD(state) || RL_STATE_IS_CUSTOM(state);
71 }
72
73 /*===========================================================================*
74 * sef_cb_lu_state_dump *
75 *===========================================================================*/
sef_cb_lu_state_dump(int state)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