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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'Connore19a68f2012-01-14 14:52:01 -0500111 int linesize = width * DIV_ROUND_UP(depth, 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'Connor3339c052012-01-13 20:00:35 -0500117 if (depth == 4)
Kevin O'Connor40401952011-12-31 03:43:12 -0500118 SET_FARVAR(seg, info->planes, 4);
119 else
120 SET_FARVAR(seg, info->planes, 1);
Kevin O'Connor3339c052012-01-13 20:00:35 -0500121 SET_FARVAR(seg, info->bits_per_pixel, depth);
Kevin O'Connor643290f2012-01-13 22:08:52 -0500122 SET_FARVAR(seg, info->banks, 1);
123 SET_FARVAR(seg, info->mem_model, GET_GLOBAL(vmode_g->memmodel));
Kevin O'Connor40401952011-12-31 03:43:12 -0500124 SET_FARVAR(seg, info->bank_size, 0);
Kevin O'Connor3339c052012-01-13 20:00:35 -0500125 u32 pages = GET_GLOBAL(VBE_total_memory) / (height * linesize);
126 if (depth == 4)
Kevin O'Connor40401952011-12-31 03:43:12 -0500127 SET_FARVAR(seg, info->pages, (pages / 4) - 1);
128 else
129 SET_FARVAR(seg, info->pages, pages - 1);
130 SET_FARVAR(seg, info->reserved0, 1);
131
132 u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
133
Kevin O'Connor3339c052012-01-13 20:00:35 -0500134 switch (depth) {
Kevin O'Connor40401952011-12-31 03:43:12 -0500135 case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5;
136 b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break;
137 case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5;
138 b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break;
139 case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
140 b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break;
141 case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
142 b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break;
143 default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0;
144 b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break;
145 }
146
147 SET_FARVAR(seg, info->red_size, r_size);
148 SET_FARVAR(seg, info->red_pos, r_pos);
149 SET_FARVAR(seg, info->green_size, g_size);
150 SET_FARVAR(seg, info->green_pos, g_pos);
151 SET_FARVAR(seg, info->blue_size, b_size);
152 SET_FARVAR(seg, info->blue_pos, b_pos);
153 SET_FARVAR(seg, info->alpha_size, a_size);
154 SET_FARVAR(seg, info->alpha_pos, a_pos);
155
Kevin O'Connor3339c052012-01-13 20:00:35 -0500156 if (depth == 32)
Kevin O'Connor40401952011-12-31 03:43:12 -0500157 SET_FARVAR(seg, info->directcolor_info,
158 VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE);
159 else
160 SET_FARVAR(seg, info->directcolor_info, 0);
161
Kevin O'Connor3339c052012-01-13 20:00:35 -0500162 if (depth > 4)
163 SET_FARVAR(seg, info->phys_base, GET_GLOBAL(VBE_framebuffer));
Kevin O'Connor40401952011-12-31 03:43:12 -0500164 else
165 SET_FARVAR(seg, info->phys_base, 0);
166
167 SET_FARVAR(seg, info->reserved1, 0);
168 SET_FARVAR(seg, info->reserved2, 0);
Kevin O'Connor3339c052012-01-13 20:00:35 -0500169 SET_FARVAR(seg, info->linear_bytes_per_scanline, linesize);
Kevin O'Connor40401952011-12-31 03:43:12 -0500170 SET_FARVAR(seg, info->bank_pages, 0);
171 SET_FARVAR(seg, info->linear_pages, 0);
172 SET_FARVAR(seg, info->linear_red_size, r_size);
173 SET_FARVAR(seg, info->linear_red_pos, r_pos);
174 SET_FARVAR(seg, info->linear_green_size, g_size);
175 SET_FARVAR(seg, info->linear_green_pos, g_pos);
176 SET_FARVAR(seg, info->linear_blue_size, b_size);
177 SET_FARVAR(seg, info->linear_blue_pos, b_pos);
178 SET_FARVAR(seg, info->linear_alpha_size, a_size);
179 SET_FARVAR(seg, info->linear_alpha_pos, a_pos);
180 SET_FARVAR(seg, info->pixclock_max, 0);
181
Kevin O'Connor3339c052012-01-13 20:00:35 -0500182 regs->ax = 0x004f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500183}
184
185static void
186vbe_104f02(struct bregs *regs)
187{
Kevin O'Connor5108c692011-12-31 19:13:45 -0500188 dprintf(1, "VBE mode set: %x\n", regs->bx);
Kevin O'Connor40401952011-12-31 03:43:12 -0500189
Kevin O'Connore6bc4c12012-01-21 11:26:37 -0500190 int mode = regs->bx & ~MF_VBEFLAGS;
191 int flags = regs->bx & MF_VBEFLAGS;
192 int ret = vga_set_mode(mode, flags);
Kevin O'Connor40401952011-12-31 03:43:12 -0500193
Kevin O'Connor5108c692011-12-31 19:13:45 -0500194 regs->ah = ret;
195 regs->al = 0x4f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500196}
197
198static void
199vbe_104f03(struct bregs *regs)
200{
Kevin O'Connore6bc4c12012-01-21 11:26:37 -0500201 regs->bx = GET_BDA(vbe_mode);
Kevin O'Connor40401952011-12-31 03:43:12 -0500202 dprintf(1, "VBE current mode=%x\n", regs->bx);
Kevin O'Connor3339c052012-01-13 20:00:35 -0500203 regs->ax = 0x004f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500204}
205
206static void
207vbe_104f04(struct bregs *regs)
208{
209 debug_stub(regs);
210 regs->ax = 0x0100;
211}
212
Kevin O'Connor9961f992012-01-21 11:53:44 -0500213void VISIBLE16
Kevin O'Connor40401952011-12-31 03:43:12 -0500214vbe_104f05(struct bregs *regs)
215{
Kevin O'Connor9961f992012-01-21 11:53:44 -0500216 if (regs->bh > 1 || regs->bl > 1)
217 goto fail;
218 if (GET_BDA(vbe_mode) & MF_LINEARFB) {
219 regs->ah = VBE_RETURN_STATUS_INVALID;
220 return;
221 }
222 struct vgamode_s *vmode_g = get_current_mode();
223 if (! vmode_g)
224 goto fail;
225 if (regs->bh) {
226 int ret = vgahw_get_window(vmode_g, regs->bl);
227 if (ret < 0)
228 goto fail;
229 regs->dx = ret;
230 regs->ax = 0x004f;
231 return;
232 }
233 int ret = vgahw_set_window(vmode_g, regs->bl, regs->dx);
234 if (ret)
235 goto fail;
236 regs->ax = 0x004f;
237 return;
238fail:
Kevin O'Connor40401952011-12-31 03:43:12 -0500239 regs->ax = 0x0100;
240}
241
242static void
243vbe_104f06(struct bregs *regs)
244{
Kevin O'Connor3876b532012-01-24 00:07:44 -0500245 if (regs->bl > 0x02)
246 goto fail;
247 struct vgamode_s *vmode_g = get_current_mode();
248 if (! vmode_g)
249 goto fail;
250 int bpp = vga_bpp(vmode_g);
251
252 if (regs->bl == 0x00) {
253 int ret = vgahw_set_linelength(vmode_g, DIV_ROUND_UP(regs->cx * bpp, 8));
254 if (ret)
255 goto fail;
256 } else if (regs->bl == 0x02) {
257 int ret = vgahw_set_linelength(vmode_g, regs->cx);
258 if (ret)
259 goto fail;
260 }
261 int linelength = vgahw_get_linelength(vmode_g);
262 if (linelength < 0)
263 goto fail;
264
265 regs->bx = linelength;
266 regs->cx = (linelength * 8) / bpp;
267 regs->dx = GET_GLOBAL(VBE_total_memory) / linelength;
268 regs->ax = 0x004f;
269 return;
270fail:
271 regs->ax = 0x014f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500272}
273
274static void
275vbe_104f07(struct bregs *regs)
276{
Kevin O'Connord61fc532012-01-27 20:37:45 -0500277 struct vgamode_s *vmode_g = get_current_mode();
278 if (! vmode_g)
279 goto fail;
280 int bpp = vga_bpp(vmode_g);
281 int linelength = vgahw_get_linelength(vmode_g);
282 if (linelength < 0)
283 goto fail;
284
285 int ret;
286 switch (regs->bl) {
287 case 0x80:
288 case 0x00:
289 ret = vgahw_set_displaystart(
290 vmode_g, DIV_ROUND_UP(regs->cx * bpp, 8) + linelength * regs->dx);
291 if (ret)
292 goto fail;
293 break;
294 case 0x01:
295 ret = vgahw_get_displaystart(vmode_g);
296 if (ret < 0)
297 goto fail;
298 regs->dx = ret / linelength;
299 regs->cx = (ret % linelength) * 8 / bpp;
300 break;
301 default:
302 goto fail;
303 }
304 regs->ax = 0x004f;
305 return;
306fail:
307 regs->ax = 0x014f;
Kevin O'Connor40401952011-12-31 03:43:12 -0500308}
309
310static void
311vbe_104f08(struct bregs *regs)
312{
313 debug_stub(regs);
314 regs->ax = 0x0100;
315}
316
317static void
318vbe_104f0a(struct bregs *regs)
319{
320 debug_stub(regs);
321 regs->ax = 0x0100;
322}
323
324static void
Kevin O'Connor59f75d42012-01-27 20:52:29 -0500325vbe_104f10(struct bregs *regs)
326{
327 switch (regs->bl) {
328 case 0x00:
329 regs->bx = 0x0f30;
330 break;
331 case 0x01:
332 SET_BDA(vbe_flag, regs->bh);
333 break;
334 case 0x02:
335 regs->bh = GET_BDA(vbe_flag);
336 break;
337 default:
338 regs->ax = 0x014f;
339 return;
340 }
341 regs->ax = 0x004f;
342}
343
344static void
Kevin O'Connor40401952011-12-31 03:43:12 -0500345vbe_104fXX(struct bregs *regs)
346{
347 debug_stub(regs);
348 regs->ax = 0x0100;
349}
350
351void
352handle_104f(struct bregs *regs)
353{
Kevin O'Connorb3df8572012-01-15 02:43:19 -0500354 if (!CONFIG_VGA_VBE) {
Kevin O'Connor40401952011-12-31 03:43:12 -0500355 vbe_104fXX(regs);
356 return;
357 }
358
359 switch (regs->al) {
360 case 0x00: vbe_104f00(regs); break;
361 case 0x01: vbe_104f01(regs); break;
362 case 0x02: vbe_104f02(regs); break;
363 case 0x03: vbe_104f03(regs); break;
364 case 0x04: vbe_104f04(regs); break;
365 case 0x05: vbe_104f05(regs); break;
366 case 0x06: vbe_104f06(regs); break;
367 case 0x07: vbe_104f07(regs); break;
368 case 0x08: vbe_104f08(regs); break;
369 case 0x0a: vbe_104f0a(regs); break;
Kevin O'Connor59f75d42012-01-27 20:52:29 -0500370 case 0x10: vbe_104f10(regs); break;
Kevin O'Connor40401952011-12-31 03:43:12 -0500371 default: vbe_104fXX(regs); break;
372 }
373}