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Kevin O'Connor40401952011-12-31 03:43:12 -05001// Video Bios Extensions handlers
2//
3// Copyright (C) 2009 Kevin O'Connor <kevin@koconnor.net>
4// Copyright (C) 2001-2008 the LGPL VGABios developers Team
5//
6// This file may be distributed under the terms of the GNU LGPLv3 license.
7
8#include "vgabios.h" // handle_104f
9#include "config.h" // CONFIG_*
10#include "bregs.h" // struct bregs
11#include "vbe.h" // struct vbe_info
12#include "util.h" // dprintf
13#include "biosvar.h" // get_global_set
14#include "bochsvga.h" // bochsvga_set_mode
15
16static void
17vbe_104f00(struct bregs *regs)
18{
19 u16 seg = regs->es;
20 struct vbe_info *info = (void*)(regs->di+0);
21
22 if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) {
23 dprintf(4, "Get VBE Controller: VBE2 Signature found\n");
24 } else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) {
25 dprintf(4, "Get VBE Controller: VESA Signature found\n");
26 } else {
27 dprintf(4, "Get VBE Controller: Invalid Signature\n");
28 }
29
30 memset_far(seg, info, 0, sizeof(*info));
31
32 SET_FARVAR(seg, info->signature, VESA_SIGNATURE);
33
34 SET_FARVAR(seg, info->version, 0x0200);
35
36 SET_FARVAR(seg, info->oem_string,
37 SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING));
38 SET_FARVAR(seg, info->capabilities, 0x1); /* 8BIT DAC */
39
40 /* We generate our mode list in the reserved field of the info block */
41 SET_FARVAR(seg, info->video_mode, SEGOFF(seg, regs->di + 34));
42
43 /* Total memory (in 64 blocks) */
44 SET_FARVAR(seg, info->total_memory, bochsvga_total_mem());
45
46 SET_FARVAR(seg, info->oem_vendor_string,
47 SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING));
48 SET_FARVAR(seg, info->oem_product_string,
49 SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING));
50 SET_FARVAR(seg, info->oem_revision_string,
51 SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING));
52
53 /* Fill list of modes */
54 bochsvga_list_modes(seg, regs->di + 32);
55
56 regs->al = regs->ah; /* 0x4F, Function supported */
57 regs->ah = 0x0; /* 0x0, Function call successful */
58}
59
60static void
61vbe_104f01(struct bregs *regs)
62{
63 u16 seg = regs->es;
64 struct vbe_mode_info *info = (void*)(regs->di+0);
65 u16 mode = regs->cx;
66 struct vbe_modeinfo modeinfo;
67 int rc;
68
69 dprintf(1, "VBE mode info request: %x\n", mode);
70
71 rc = bochsvga_mode_info(mode, &modeinfo);
72 if (rc) {
73 dprintf(1, "VBE mode %x not found\n", mode);
74 regs->ax = 0x100;
75 return;
76 }
77
78 u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED |
79 VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE |
80 VBE_MODE_ATTRIBUTE_COLOR_MODE |
81 VBE_MODE_ATTRIBUTE_GRAPHICS_MODE;
82 if (modeinfo.depth == 4)
83 mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT;
84 else
85 mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE;
86 SET_FARVAR(seg, info->mode_attributes, mode_attr);
87 SET_FARVAR(seg, info->winA_attributes,
88 VBE_WINDOW_ATTRIBUTE_RELOCATABLE |
89 VBE_WINDOW_ATTRIBUTE_READABLE |
90 VBE_WINDOW_ATTRIBUTE_WRITEABLE);
91 SET_FARVAR(seg, info->winB_attributes, 0);
92 SET_FARVAR(seg, info->win_granularity, 64); /* Bank size 64K */
93 SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */
94 SET_FARVAR(seg, info->winA_seg, 0xA000);
95 SET_FARVAR(seg, info->winB_seg, 0x0);
96 SET_FARVAR(seg, info->win_func_ptr.segoff, 0x0);
97 SET_FARVAR(seg, info->bytes_per_scanline, modeinfo.linesize);
98 SET_FARVAR(seg, info->xres, modeinfo.width);
99 SET_FARVAR(seg, info->yres, modeinfo.height);
100 SET_FARVAR(seg, info->xcharsize, 8);
101 SET_FARVAR(seg, info->ycharsize, 16);
102 if (modeinfo.depth == 4)
103 SET_FARVAR(seg, info->planes, 4);
104 else
105 SET_FARVAR(seg, info->planes, 1);
106 SET_FARVAR(seg, info->bits_per_pixel, modeinfo.depth);
107 SET_FARVAR(seg, info->banks,
108 (modeinfo.linesize * modeinfo.height + 65535) / 65536);
109 if (modeinfo.depth == 4)
110 SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PLANAR);
111 else if (modeinfo.depth == 8)
112 SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PACKED_PIXEL);
113 else
114 SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_DIRECT_COLOR);
115 SET_FARVAR(seg, info->bank_size, 0);
116 u32 pages = modeinfo.vram_size / (modeinfo.height * modeinfo.linesize);
117 if (modeinfo.depth == 4)
118 SET_FARVAR(seg, info->pages, (pages / 4) - 1);
119 else
120 SET_FARVAR(seg, info->pages, pages - 1);
121 SET_FARVAR(seg, info->reserved0, 1);
122
123 u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
124
125 switch (modeinfo.depth) {
126 case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5;
127 b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break;
128 case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5;
129 b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break;
130 case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
131 b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break;
132 case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
133 b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break;
134 default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0;
135 b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break;
136 }
137
138 SET_FARVAR(seg, info->red_size, r_size);
139 SET_FARVAR(seg, info->red_pos, r_pos);
140 SET_FARVAR(seg, info->green_size, g_size);
141 SET_FARVAR(seg, info->green_pos, g_pos);
142 SET_FARVAR(seg, info->blue_size, b_size);
143 SET_FARVAR(seg, info->blue_pos, b_pos);
144 SET_FARVAR(seg, info->alpha_size, a_size);
145 SET_FARVAR(seg, info->alpha_pos, a_pos);
146
147 if (modeinfo.depth == 32)
148 SET_FARVAR(seg, info->directcolor_info,
149 VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE);
150 else
151 SET_FARVAR(seg, info->directcolor_info, 0);
152
153 if (modeinfo.depth > 4)
154 SET_FARVAR(seg, info->phys_base, modeinfo.phys_base);
155 else
156 SET_FARVAR(seg, info->phys_base, 0);
157
158 SET_FARVAR(seg, info->reserved1, 0);
159 SET_FARVAR(seg, info->reserved2, 0);
160 SET_FARVAR(seg, info->linear_bytes_per_scanline, modeinfo.linesize);
161 SET_FARVAR(seg, info->bank_pages, 0);
162 SET_FARVAR(seg, info->linear_pages, 0);
163 SET_FARVAR(seg, info->linear_red_size, r_size);
164 SET_FARVAR(seg, info->linear_red_pos, r_pos);
165 SET_FARVAR(seg, info->linear_green_size, g_size);
166 SET_FARVAR(seg, info->linear_green_pos, g_pos);
167 SET_FARVAR(seg, info->linear_blue_size, b_size);
168 SET_FARVAR(seg, info->linear_blue_pos, b_pos);
169 SET_FARVAR(seg, info->linear_alpha_size, a_size);
170 SET_FARVAR(seg, info->linear_alpha_pos, a_pos);
171 SET_FARVAR(seg, info->pixclock_max, 0);
172
173 regs->al = regs->ah; /* 0x4F, Function supported */
174 regs->ah = 0x0; /* 0x0, Function call successful */
175}
176
177static void
178vbe_104f02(struct bregs *regs)
179{
180 //u16 seg = regs->es;
181 //struct vbe_crtc_info *crtc_info = (void*)(regs->di+0);
182 u16 mode = regs->bx;
183 struct vbe_modeinfo modeinfo;
184 int rc;
185
186 dprintf(1, "VBE mode set: %x\n", mode);
187
188 if (mode < 0x100) { /* VGA */
189 dprintf(1, "set VGA mode %x\n", mode);
190
191 bochsvga_hires_enable(0);
192 vga_set_mode(mode, 0);
193 } else { /* VBE */
194 rc = bochsvga_mode_info(mode & 0x1ff, &modeinfo);
195 if (rc) {
196 dprintf(1, "VBE mode %x not found\n", mode & 0x1ff);
197 regs->ax = 0x100;
198 return;
199 }
200 bochsvga_hires_enable(1);
201 bochsvga_set_mode(mode & 0x1ff, &modeinfo);
202
203 if (mode & 0x4000) {
204 /* Linear frame buffer */
205 /* XXX: ??? */
206 }
207 if (!(mode & 0x8000)) {
208 bochsvga_clear_scr();
209 }
210 }
211
212 regs->al = regs->ah; /* 0x4F, Function supported */
213 regs->ah = 0x0; /* 0x0, Function call successful */
214}
215
216static void
217vbe_104f03(struct bregs *regs)
218{
219 if (!bochsvga_hires_enabled()) {
220 regs->bx = GET_BDA(video_mode);
221 } else {
222 regs->bx = bochsvga_curr_mode();
223 }
224
225 dprintf(1, "VBE current mode=%x\n", regs->bx);
226
227 regs->al = regs->ah; /* 0x4F, Function supported */
228 regs->ah = 0x0; /* 0x0, Function call successful */
229}
230
231static void
232vbe_104f04(struct bregs *regs)
233{
234 debug_stub(regs);
235 regs->ax = 0x0100;
236}
237
238static void
239vbe_104f05(struct bregs *regs)
240{
241 debug_stub(regs);
242 regs->ax = 0x0100;
243}
244
245static void
246vbe_104f06(struct bregs *regs)
247{
248 debug_stub(regs);
249 regs->ax = 0x0100;
250}
251
252static void
253vbe_104f07(struct bregs *regs)
254{
255 debug_stub(regs);
256 regs->ax = 0x0100;
257}
258
259static void
260vbe_104f08(struct bregs *regs)
261{
262 debug_stub(regs);
263 regs->ax = 0x0100;
264}
265
266static void
267vbe_104f0a(struct bregs *regs)
268{
269 debug_stub(regs);
270 regs->ax = 0x0100;
271}
272
273static void
274vbe_104fXX(struct bregs *regs)
275{
276 debug_stub(regs);
277 regs->ax = 0x0100;
278}
279
280void
281handle_104f(struct bregs *regs)
282{
283 if (!bochsvga_enabled()) {
284 vbe_104fXX(regs);
285 return;
286 }
287
288 switch (regs->al) {
289 case 0x00: vbe_104f00(regs); break;
290 case 0x01: vbe_104f01(regs); break;
291 case 0x02: vbe_104f02(regs); break;
292 case 0x03: vbe_104f03(regs); break;
293 case 0x04: vbe_104f04(regs); break;
294 case 0x05: vbe_104f05(regs); break;
295 case 0x06: vbe_104f06(regs); break;
296 case 0x07: vbe_104f07(regs); break;
297 case 0x08: vbe_104f08(regs); break;
298 case 0x0a: vbe_104f0a(regs); break;
299 default: vbe_104fXX(regs); break;
300 }
301}