rev |
line source |
nuclear@1
|
1 #include <stdio.h>
|
nuclear@1
|
2 #include <exec/memory.h>
|
nuclear@1
|
3 #include <exec/libraries.h>
|
nuclear@1
|
4 #include <graphics/gfxbase.h>
|
nuclear@1
|
5 #include "copper.h"
|
nuclear@1
|
6 #include "hwregs.h"
|
nuclear@1
|
7
|
nuclear@1
|
8 uint32_t *copperlist;
|
nuclear@1
|
9 static uint32_t *copperlist_end;
|
nuclear@1
|
10 static uint32_t *copmem, *curlist;
|
nuclear@1
|
11 static void *savedlist, *savedview;
|
nuclear@1
|
12 static int mode, copmem_size;
|
nuclear@1
|
13
|
nuclear@1
|
14 struct GfxBase *GfxBase;
|
nuclear@1
|
15
|
nuclear@1
|
16 int init_copper(int maxlist, int nlists)
|
nuclear@1
|
17 {
|
nuclear@1
|
18 /* save copper list (TODO) */
|
nuclear@1
|
19 if((GfxBase = (struct GfxBase*)OpenLibrary("graphics.library", 0))) {
|
nuclear@1
|
20 savedlist = GfxBase->copinit;
|
nuclear@1
|
21 savedview = GfxBase->ActiView;
|
nuclear@1
|
22 LoadView(0);
|
nuclear@1
|
23 WaitTOF();
|
nuclear@1
|
24 WaitTOF();
|
nuclear@1
|
25
|
nuclear@1
|
26 CloseLibrary(GfxBase);
|
nuclear@1
|
27 GfxBase = 0;
|
nuclear@1
|
28 }
|
nuclear@1
|
29
|
nuclear@1
|
30 /* allocate and set new copper lists */
|
nuclear@1
|
31 if(maxlist <= 0) maxlist = 256;
|
nuclear@1
|
32 mode = nlists >= COPPER_DOUBLE ? COPPER_DOUBLE : COPPER_SINGLE;
|
nuclear@1
|
33
|
nuclear@1
|
34 copmem_size = maxlist * 4 * mode;
|
nuclear@1
|
35 if(!(copmem = (uint32_t*)AllocMem(copmem_size, MEMF_CHIP))) {
|
nuclear@1
|
36 printf("failed to allocate chip memory for %d copper lists of %d instructions\n",
|
nuclear@1
|
37 mode, maxlist);
|
nuclear@1
|
38 return -1;
|
nuclear@1
|
39 }
|
nuclear@1
|
40
|
nuclear@1
|
41 curlist = copperlist = copmem;
|
nuclear@1
|
42 *curlist = COPPER_END;
|
nuclear@1
|
43
|
nuclear@1
|
44 if(mode == COPPER_DOUBLE) {
|
nuclear@1
|
45 copperlist = curlist + maxlist;
|
nuclear@1
|
46 *copperlist = COPPER_END;
|
nuclear@1
|
47 }
|
nuclear@1
|
48 copperlist_end= copperlist;
|
nuclear@1
|
49
|
nuclear@1
|
50 REG32_COP1LC = (uint32_t)curlist;
|
nuclear@1
|
51 REG_COPJMP1 = 0; /* causes copper to read COP1LC */
|
nuclear@1
|
52 return 0;
|
nuclear@1
|
53 }
|
nuclear@1
|
54
|
nuclear@1
|
55 void cleanup_copper(void)
|
nuclear@1
|
56 {
|
nuclear@1
|
57 /* restore copper list */
|
nuclear@1
|
58 REG32_COP1LC = (uint32_t)savedlist;
|
nuclear@1
|
59
|
nuclear@1
|
60 if((GfxBase = (struct GfxBase*)OpenLibrary("graphics.library", 0))) {
|
nuclear@1
|
61 GfxBase->copinit = savedlist;
|
nuclear@1
|
62 LoadView(savedview);
|
nuclear@1
|
63 WaitTOF();
|
nuclear@1
|
64 WaitTOF();
|
nuclear@1
|
65 CloseLibrary(GfxBase);
|
nuclear@1
|
66 GfxBase = 0;
|
nuclear@1
|
67 }
|
nuclear@1
|
68
|
nuclear@1
|
69 if(copmem) {
|
nuclear@1
|
70 FreeMem(copmem, copmem_size);
|
nuclear@1
|
71 }
|
nuclear@1
|
72 }
|
nuclear@1
|
73
|
nuclear@1
|
74 void enable_copper(void)
|
nuclear@1
|
75 {
|
nuclear@1
|
76 REG_DMACON = SETBITS(DMA_COPPER);
|
nuclear@1
|
77 }
|
nuclear@1
|
78
|
nuclear@1
|
79 void disable_copper(void)
|
nuclear@1
|
80 {
|
nuclear@1
|
81 REG_DMACON = CLRBITS(DMA_COPPER);
|
nuclear@1
|
82 }
|
nuclear@1
|
83
|
nuclear@1
|
84 void clear_copper(void)
|
nuclear@1
|
85 {
|
nuclear@1
|
86 copperlist_end = copperlist;
|
nuclear@1
|
87 *copperlist_end = COPPER_END;
|
nuclear@1
|
88 }
|
nuclear@1
|
89
|
nuclear@1
|
90 void add_copper(uint32_t cmd)
|
nuclear@1
|
91 {
|
nuclear@1
|
92 *copperlist_end++ = cmd;
|
nuclear@1
|
93 }
|
nuclear@1
|
94
|
nuclear@1
|
95 void sort_copper(void)
|
nuclear@1
|
96 {
|
nuclear@1
|
97 /* TODO */
|
nuclear@1
|
98 }
|
nuclear@1
|
99
|
nuclear@1
|
100 void swap_copper(void)
|
nuclear@1
|
101 {
|
nuclear@1
|
102 if(mode == COPPER_DOUBLE) {
|
nuclear@1
|
103 uint32_t *tmpptr;
|
nuclear@1
|
104 tmpptr = curlist;
|
nuclear@1
|
105 curlist = copperlist;
|
nuclear@1
|
106 copperlist = copperlist_end = tmpptr;
|
nuclear@1
|
107
|
nuclear@1
|
108 REG32_COP1LC = (uint32_t)curlist;
|
nuclear@1
|
109 REG_COPJMP1 = 0;
|
nuclear@1
|
110 } else {
|
nuclear@1
|
111 copperlist_end = curlist;
|
nuclear@1
|
112 }
|
nuclear@1
|
113 *copperlist_end = COPPER_END;
|
nuclear@1
|
114 }
|