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Kevin O'Connor40401952011-12-31 03:43:12 -05001// Video Bios Extensions handlers
2//
Kevin O'Connord9211ee2012-01-31 22:54:49 -05003// Copyright (C) 2012 Kevin O'Connor <kevin@koconnor.net>
4// Copyright (C) 2011 Julian Pidancet <julian.pidancet@citrix.com>
Kevin O'Connor40401952011-12-31 03:43:12 -05005// Copyright (C) 2001-2008 the LGPL VGABios developers Team
6//
7// This file may be distributed under the terms of the GNU LGPLv3 license.
8
9#include "vgabios.h" // handle_104f
10#include "config.h" // CONFIG_*
11#include "bregs.h" // struct bregs
12#include "vbe.h" // struct vbe_info
13#include "util.h" // dprintf
14#include "biosvar.h" // get_global_set
Kevin O'Connor5108c692011-12-31 19:13:45 -050015#include "vgahw.h" // vgahw_set_mode
Kevin O'Connor40401952011-12-31 03:43:12 -050016
Kevin O'Connor3339c052012-01-13 20:00:35 -050017u32 VBE_total_memory VAR16 = 256 * 1024;
18u32 VBE_capabilities VAR16;
19u32 VBE_framebuffer VAR16;
Kevin O'Connor643290f2012-01-13 22:08:52 -050020u16 VBE_win_granularity VAR16 = 64;
Kevin O'Connor3339c052012-01-13 20:00:35 -050021
Kevin O'Connor40401952011-12-31 03:43:12 -050022static void
23vbe_104f00(struct bregs *regs)
24{
25 u16 seg = regs->es;
26 struct vbe_info *info = (void*)(regs->di+0);
27
28 if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) {
29 dprintf(4, "Get VBE Controller: VBE2 Signature found\n");
30 } else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) {
31 dprintf(4, "Get VBE Controller: VESA Signature found\n");
32 } else {
33 dprintf(4, "Get VBE Controller: Invalid Signature\n");
34 }
35
36 memset_far(seg, info, 0, sizeof(*info));
37
38 SET_FARVAR(seg, info->signature, VESA_SIGNATURE);
39
40 SET_FARVAR(seg, info->version, 0x0200);
41
42 SET_FARVAR(seg, info->oem_string,
43 SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING));
Kevin O'Connor3339c052012-01-13 20:00:35 -050044 SET_FARVAR(seg, info->capabilities, GET_GLOBAL(VBE_capabilities));
Kevin O'Connor40401952011-12-31 03:43:12 -050045
46 /* We generate our mode list in the reserved field of the info block */
Kevin O'Connor34203cd2012-01-09 20:55:31 -050047 u16 *destmode = (void*)info->reserved;
48 SET_FARVAR(seg, info->video_mode, SEGOFF(seg, (u32)destmode));
Kevin O'Connor40401952011-12-31 03:43:12 -050049
50 /* Total memory (in 64 blocks) */
Kevin O'Connor3339c052012-01-13 20:00:35 -050051 SET_FARVAR(seg, info->total_memory
52 , GET_GLOBAL(VBE_total_memory) / (64*1024));
Kevin O'Connor40401952011-12-31 03:43:12 -050053
54 SET_FARVAR(seg, info->oem_vendor_string,
55 SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING));
56 SET_FARVAR(seg, info->oem_product_string,
57 SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING));
58 SET_FARVAR(seg, info->oem_revision_string,
59 SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING));
60
61 /* Fill list of modes */
Kevin O'Connor34203cd2012-01-09 20:55:31 -050062 u16 *last = (void*)&info->reserved[sizeof(info->reserved)];
63 vgahw_list_modes(seg, destmode, last - 1);
Kevin O'Connor40401952011-12-31 03:43:12 -050064
Kevin O'Connor3339c052012-01-13 20:00:35 -050065 regs->ax = 0x004f;
Kevin O'Connor40401952011-12-31 03:43:12 -050066}
67
68static void
69vbe_104f01(struct bregs *regs)
70{
71 u16 seg = regs->es;
72 struct vbe_mode_info *info = (void*)(regs->di+0);
73 u16 mode = regs->cx;
Kevin O'Connor40401952011-12-31 03:43:12 -050074
75 dprintf(1, "VBE mode info request: %x\n", mode);
76
Kevin O'Connor3339c052012-01-13 20:00:35 -050077 struct vgamode_s *vmode_g = vgahw_find_mode(mode);
78 if (! vmode_g) {
Kevin O'Connor40401952011-12-31 03:43:12 -050079 dprintf(1, "VBE mode %x not found\n", mode);
Kevin O'Connor3339c052012-01-13 20:00:35 -050080 regs->ax = 0x0100;
Kevin O'Connor40401952011-12-31 03:43:12 -050081 return;
82 }
83
Kevin O'Connor643290f2012-01-13 22:08:52 -050084 memset_far(seg, info, 0, sizeof(*info));
Kevin O'Connor40401952011-12-31 03:43:12 -050085 u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED |
86 VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE |
87 VBE_MODE_ATTRIBUTE_COLOR_MODE |
Kevin O'Connor643290f2012-01-13 22:08:52 -050088 VBE_MODE_ATTRIBUTE_GRAPHICS_MODE |
89 VBE_MODE_ATTRIBUTE_NOT_VGA_COMPATIBLE;
90 u32 framebuffer = GET_GLOBAL(VBE_framebuffer);
Kevin O'Connor3339c052012-01-13 20:00:35 -050091 int depth = GET_GLOBAL(vmode_g->depth);
92 if (depth == 4)
Kevin O'Connor40401952011-12-31 03:43:12 -050093 mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT;
Kevin O'Connor643290f2012-01-13 22:08:52 -050094 else if (framebuffer)
Kevin O'Connor40401952011-12-31 03:43:12 -050095 mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE;
96 SET_FARVAR(seg, info->mode_attributes, mode_attr);
97 SET_FARVAR(seg, info->winA_attributes,
98 VBE_WINDOW_ATTRIBUTE_RELOCATABLE |
99 VBE_WINDOW_ATTRIBUTE_READABLE |
100 VBE_WINDOW_ATTRIBUTE_WRITEABLE);
101 SET_FARVAR(seg, info->winB_attributes, 0);
Kevin O'Connor643290f2012-01-13 22:08:52 -0500102 SET_FARVAR(seg, info->win_granularity, GET_GLOBAL(VBE_win_granularity));
Kevin O'Connor40401952011-12-31 03:43:12 -0500103 SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */
Kevin O'Connor03776022012-01-21 11:00:11 -0500104 SET_FARVAR(seg, info->winA_seg, GET_GLOBAL(vmode_g->sstart));
Kevin O'Connor40401952011-12-31 03:43:12 -0500105 SET_FARVAR(seg, info->winB_seg, 0x0);
Kevin O'Connor9961f992012-01-21 11:53:44 -0500106 extern void entry_104f05(void);
107 SET_FARVAR(seg, info->win_func_ptr
108 , SEGOFF(get_global_seg(), (u32)entry_104f05));
Kevin O'Connor3339c052012-01-13 20:00:35 -0500109 int width = GET_GLOBAL(vmode_g->width);
110 int height = GET_GLOBAL(vmode_g->height);
Kevin O'Connor35244532012-01-29 11:42:44 -0500111 int linesize = DIV_ROUND_UP(width * vga_bpp(vmode_g), 8);
Kevin O'Connor3339c052012-01-13 20:00:35 -0500112 SET_FARVAR(seg, info->bytes_per_scanline, linesize);
113 SET_FARVAR(seg, info->xres, width);
114 SET_FARVAR(seg, info->yres, height);
Kevin O'Connor03776022012-01-21 11:00:11 -0500115 SET_FARVAR(seg, info->xcharsize, GET_GLOBAL(vmode_g->cwidth));
116 SET_FARVAR(seg, info->ycharsize, GET_GLOBAL(vmode_g->cheight));
Kevin O'Connor35244532012-01-29 11:42:44 -0500117 int planes = (depth == 4) ? 4 : 1;
118 SET_FARVAR(seg, info->planes, planes);
Kevin O'Connor3339c052012-01-13 20:00:35 -0500119 SET_FARVAR(seg, info->bits_per_pixel, depth);
Kevin O'Connor643290f2012-01-13 22:08:52 -0500120 SET_FARVAR(seg, info->banks, 1);
121 SET_FARVAR(seg, info->mem_model, GET_GLOBAL(vmode_g->memmodel));
Kevin O'Connor40401952011-12-31 03:43:12 -0500122 SET_FARVAR(seg, info->bank_size, 0);
Kevin O'Connor3339c052012-01-13 20:00:35 -0500123 u32 pages = GET_GLOBAL(VBE_total_memory) / (height * linesize);
Kevin O'Connor35244532012-01-29 11:42:44 -0500124 SET_FARVAR(seg, info->pages, (pages / planes) - 1);
Kevin O'Connor40401952011-12-31 03:43:12 -0500125 SET_FARVAR(seg, info->reserved0, 1);
126
127 u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
128
Kevin O'Connor3339c052012-01-13 20:00:35 -0500129 switch (depth) {
Kevin O'Connor40401952011-12-31 03:43:12 -0500130 case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5;
131 b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break;
132 case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5;
133 b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break;
134 case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
135 b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break;
136 case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
137 b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break;
138 default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0;
139 b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break;
140 }
141
142 SET_FARVAR(seg, info->red_size, r_size);
143 SET_FARVAR(seg, info->red_pos, r_pos);
144 SET_FARVAR(seg, info->green_size, g_size);
145 SET_FARVAR(seg, info->green_pos, g_pos);
146 SET_FARVAR(seg, info->blue_size, b_size);
147 SET_FARVAR(seg, info->blue_pos, b_pos);
148 SET_FARVAR(seg, info->alpha_size, a_size);
149 SET_FARVAR(seg, info->alpha_pos, a_pos);
150
Kevin O'Connor3339c052012-01-13 20:00:35 -0500151 if (depth == 32)
Kevin O'Connor40401952011-12-31 03:43:12 -0500152 SET_FARVAR(seg, info->directcolor_info,
153 VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE);
154 else
155 SET_FARVAR(seg, info->directcolor_info, 0);
156
Kevin O'Connor3339c052012-01-13 20:00:35 -0500157 if (depth > 4)
158 SET_FARVAR(seg, info->phys_base, GET_GLOBAL(VBE_framebuffer));
Kevin O'Connor40401952011-12-31 03:43:12 -0500159 else
160 SET_FARVAR(seg, info->phys_base, 0);
161
162 SET_FARVAR(seg, info->reserved1, 0);
163 SET_FARVAR(seg, info->reserved2, 0);
Kevin O'Connor3339c052012-01-13 20:00:35 -0500164 SET_FARVAR(seg, info->linear_bytes_per_scanline, linesize);
Kevin O'Connor40401952011-12-31 03:43:12 -0500165 SET_FARVAR(seg, info->bank_pages, 0);
166 SET_FARVAR(seg, info->linear_pages, 0);
167 SET_FARVAR(seg, info->linear_red_size, r_size);
168 SET_FARVAR(seg, info->linear_red_pos, r_pos);
169 SET_FARVAR(seg, info->linear_green_size, g_size);
170 SET_FARVAR(seg, info->linear_green_pos, g_pos);
171 SET_FARVAR(seg, info->linear_blue_size, b_size);
172 SET_FARVAR(seg, info->linear_blue_pos, b_pos);
173 SET_FARVAR(seg, info->linear_alpha_size, a_size);
174 SET_FARVAR(seg, info->linear_alpha_pos, a_pos);
175 SET_FARVAR(seg, info->pixclock_max, 0);
176
Kevin O'Connor3339c052012-01-13 20:00:35 -0500177 regs->ax = 0x004f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500178}
179
180static void
181vbe_104f02(struct bregs *regs)
182{
Kevin O'Connor5108c692011-12-31 19:13:45 -0500183 dprintf(1, "VBE mode set: %x\n", regs->bx);
Kevin O'Connor40401952011-12-31 03:43:12 -0500184
Kevin O'Connore6bc4c12012-01-21 11:26:37 -0500185 int mode = regs->bx & ~MF_VBEFLAGS;
186 int flags = regs->bx & MF_VBEFLAGS;
187 int ret = vga_set_mode(mode, flags);
Kevin O'Connor40401952011-12-31 03:43:12 -0500188
Kevin O'Connor5108c692011-12-31 19:13:45 -0500189 regs->ah = ret;
190 regs->al = 0x4f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500191}
192
193static void
194vbe_104f03(struct bregs *regs)
195{
Kevin O'Connore6bc4c12012-01-21 11:26:37 -0500196 regs->bx = GET_BDA(vbe_mode);
Kevin O'Connor40401952011-12-31 03:43:12 -0500197 dprintf(1, "VBE current mode=%x\n", regs->bx);
Kevin O'Connor3339c052012-01-13 20:00:35 -0500198 regs->ax = 0x004f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500199}
200
201static void
202vbe_104f04(struct bregs *regs)
203{
Kevin O'Connor2469f892012-02-04 12:40:02 -0500204 u16 seg = regs->es;
205 void *data = (void*)(regs->bx+0);
206 u16 states = regs->cx;
207 if (states & ~0x0f)
208 goto fail;
209 int ret;
210 switch (regs->dl) {
211 case 0x00:
212 ret = vgahw_size_state(states);
213 if (ret < 0)
214 goto fail;
215 regs->bx = ret / 64;
216 break;
217 case 0x01:
218 ret = vgahw_save_state(seg, data, states);
219 if (ret)
220 goto fail;
221 break;
222 case 0x02:
223 ret = vgahw_restore_state(seg, data, states);
224 if (ret)
225 goto fail;
226 break;
227 default:
228 goto fail;
229 }
230 regs->ax = 0x004f;
231 return;
232fail:
233 regs->ax = 0x014f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500234}
235
Kevin O'Connor9961f992012-01-21 11:53:44 -0500236void VISIBLE16
Kevin O'Connor40401952011-12-31 03:43:12 -0500237vbe_104f05(struct bregs *regs)
238{
Kevin O'Connor9961f992012-01-21 11:53:44 -0500239 if (regs->bh > 1 || regs->bl > 1)
240 goto fail;
241 if (GET_BDA(vbe_mode) & MF_LINEARFB) {
242 regs->ah = VBE_RETURN_STATUS_INVALID;
243 return;
244 }
245 struct vgamode_s *vmode_g = get_current_mode();
246 if (! vmode_g)
247 goto fail;
248 if (regs->bh) {
249 int ret = vgahw_get_window(vmode_g, regs->bl);
250 if (ret < 0)
251 goto fail;
252 regs->dx = ret;
253 regs->ax = 0x004f;
254 return;
255 }
256 int ret = vgahw_set_window(vmode_g, regs->bl, regs->dx);
257 if (ret)
258 goto fail;
259 regs->ax = 0x004f;
260 return;
261fail:
Kevin O'Connor40401952011-12-31 03:43:12 -0500262 regs->ax = 0x0100;
263}
264
265static void
266vbe_104f06(struct bregs *regs)
267{
Kevin O'Connor3876b532012-01-24 00:07:44 -0500268 if (regs->bl > 0x02)
269 goto fail;
270 struct vgamode_s *vmode_g = get_current_mode();
271 if (! vmode_g)
272 goto fail;
273 int bpp = vga_bpp(vmode_g);
274
275 if (regs->bl == 0x00) {
276 int ret = vgahw_set_linelength(vmode_g, DIV_ROUND_UP(regs->cx * bpp, 8));
277 if (ret)
278 goto fail;
279 } else if (regs->bl == 0x02) {
280 int ret = vgahw_set_linelength(vmode_g, regs->cx);
281 if (ret)
282 goto fail;
283 }
284 int linelength = vgahw_get_linelength(vmode_g);
285 if (linelength < 0)
286 goto fail;
287
288 regs->bx = linelength;
289 regs->cx = (linelength * 8) / bpp;
290 regs->dx = GET_GLOBAL(VBE_total_memory) / linelength;
291 regs->ax = 0x004f;
292 return;
293fail:
294 regs->ax = 0x014f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500295}
296
297static void
298vbe_104f07(struct bregs *regs)
299{
Kevin O'Connord61fc532012-01-27 20:37:45 -0500300 struct vgamode_s *vmode_g = get_current_mode();
301 if (! vmode_g)
302 goto fail;
303 int bpp = vga_bpp(vmode_g);
304 int linelength = vgahw_get_linelength(vmode_g);
305 if (linelength < 0)
306 goto fail;
307
308 int ret;
309 switch (regs->bl) {
310 case 0x80:
311 case 0x00:
312 ret = vgahw_set_displaystart(
313 vmode_g, DIV_ROUND_UP(regs->cx * bpp, 8) + linelength * regs->dx);
314 if (ret)
315 goto fail;
316 break;
317 case 0x01:
318 ret = vgahw_get_displaystart(vmode_g);
319 if (ret < 0)
320 goto fail;
321 regs->dx = ret / linelength;
322 regs->cx = (ret % linelength) * 8 / bpp;
323 break;
324 default:
325 goto fail;
326 }
327 regs->ax = 0x004f;
328 return;
329fail:
330 regs->ax = 0x014f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500331}
332
333static void
334vbe_104f08(struct bregs *regs)
335{
Kevin O'Connore737b172012-02-04 11:08:39 -0500336 struct vgamode_s *vmode_g = get_current_mode();
337 if (! vmode_g)
338 goto fail;
339 u8 memmodel = GET_GLOBAL(vmode_g->memmodel);
340 if (memmodel == MM_DIRECT || memmodel == MM_YUV) {
341 regs->ax = 0x034f;
342 return;
343 }
344 if (regs->bl > 1)
345 goto fail;
346 if (regs->bl == 0) {
347 int ret = vgahw_set_dacformat(vmode_g, regs->bh);
348 if (ret < 0)
349 goto fail;
350 }
351 int ret = vgahw_get_dacformat(vmode_g);
352 if (ret < 0)
353 goto fail;
354 regs->bh = ret;
355 regs->ax = 0x004f;
356 return;
357fail:
358 regs->ax = 0x014f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500359}
360
361static void
362vbe_104f0a(struct bregs *regs)
363{
364 debug_stub(regs);
365 regs->ax = 0x0100;
366}
367
368static void
Kevin O'Connor59f75d42012-01-27 20:52:29 -0500369vbe_104f10(struct bregs *regs)
370{
371 switch (regs->bl) {
372 case 0x00:
373 regs->bx = 0x0f30;
374 break;
375 case 0x01:
376 SET_BDA(vbe_flag, regs->bh);
377 break;
378 case 0x02:
379 regs->bh = GET_BDA(vbe_flag);
380 break;
381 default:
382 regs->ax = 0x014f;
383 return;
384 }
385 regs->ax = 0x004f;
386}
387
388static void
Kevin O'Connor40401952011-12-31 03:43:12 -0500389vbe_104fXX(struct bregs *regs)
390{
391 debug_stub(regs);
392 regs->ax = 0x0100;
393}
394
395void
396handle_104f(struct bregs *regs)
397{
Kevin O'Connorb3df8572012-01-15 02:43:19 -0500398 if (!CONFIG_VGA_VBE) {
Kevin O'Connor40401952011-12-31 03:43:12 -0500399 vbe_104fXX(regs);
400 return;
401 }
402
403 switch (regs->al) {
404 case 0x00: vbe_104f00(regs); break;
405 case 0x01: vbe_104f01(regs); break;
406 case 0x02: vbe_104f02(regs); break;
407 case 0x03: vbe_104f03(regs); break;
408 case 0x04: vbe_104f04(regs); break;
409 case 0x05: vbe_104f05(regs); break;
410 case 0x06: vbe_104f06(regs); break;
411 case 0x07: vbe_104f07(regs); break;
412 case 0x08: vbe_104f08(regs); break;
413 case 0x0a: vbe_104f0a(regs); break;
Kevin O'Connor59f75d42012-01-27 20:52:29 -0500414 case 0x10: vbe_104f10(regs); break;
Kevin O'Connor40401952011-12-31 03:43:12 -0500415 default: vbe_104fXX(regs); break;
416 }
417}