1 // Video Bios Extensions handlers
3 // Copyright (C) 2009 Kevin O'Connor <kevin@koconnor.net>
4 // Copyright (C) 2001-2008 the LGPL VGABios developers Team
6 // This file may be distributed under the terms of the GNU LGPLv3 license.
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_hires_enabled
15 #include "vgahw.h" // vgahw_set_mode
18 vbe_104f00(struct bregs *regs)
21 struct vbe_info *info = (void*)(regs->di+0);
23 if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) {
24 dprintf(4, "Get VBE Controller: VBE2 Signature found\n");
25 } else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) {
26 dprintf(4, "Get VBE Controller: VESA Signature found\n");
28 dprintf(4, "Get VBE Controller: Invalid Signature\n");
31 memset_far(seg, info, 0, sizeof(*info));
33 SET_FARVAR(seg, info->signature, VESA_SIGNATURE);
35 SET_FARVAR(seg, info->version, 0x0200);
37 SET_FARVAR(seg, info->oem_string,
38 SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING));
39 SET_FARVAR(seg, info->capabilities, 0x1); /* 8BIT DAC */
41 /* We generate our mode list in the reserved field of the info block */
42 u16 *destmode = (void*)info->reserved;
43 SET_FARVAR(seg, info->video_mode, SEGOFF(seg, (u32)destmode));
45 /* Total memory (in 64 blocks) */
46 SET_FARVAR(seg, info->total_memory, bochsvga_total_mem());
48 SET_FARVAR(seg, info->oem_vendor_string,
49 SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING));
50 SET_FARVAR(seg, info->oem_product_string,
51 SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING));
52 SET_FARVAR(seg, info->oem_revision_string,
53 SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING));
55 /* Fill list of modes */
56 u16 *last = (void*)&info->reserved[sizeof(info->reserved)];
57 vgahw_list_modes(seg, destmode, last - 1);
59 regs->al = regs->ah; /* 0x4F, Function supported */
60 regs->ah = 0x0; /* 0x0, Function call successful */
64 vbe_104f01(struct bregs *regs)
67 struct vbe_mode_info *info = (void*)(regs->di+0);
69 struct vbe_modeinfo modeinfo;
72 dprintf(1, "VBE mode info request: %x\n", mode);
74 rc = bochsvga_mode_info(mode, &modeinfo);
76 dprintf(1, "VBE mode %x not found\n", mode);
81 u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED |
82 VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE |
83 VBE_MODE_ATTRIBUTE_COLOR_MODE |
84 VBE_MODE_ATTRIBUTE_GRAPHICS_MODE;
85 if (modeinfo.depth == 4)
86 mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT;
88 mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE;
89 SET_FARVAR(seg, info->mode_attributes, mode_attr);
90 SET_FARVAR(seg, info->winA_attributes,
91 VBE_WINDOW_ATTRIBUTE_RELOCATABLE |
92 VBE_WINDOW_ATTRIBUTE_READABLE |
93 VBE_WINDOW_ATTRIBUTE_WRITEABLE);
94 SET_FARVAR(seg, info->winB_attributes, 0);
95 SET_FARVAR(seg, info->win_granularity, 64); /* Bank size 64K */
96 SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */
97 SET_FARVAR(seg, info->winA_seg, 0xA000);
98 SET_FARVAR(seg, info->winB_seg, 0x0);
99 SET_FARVAR(seg, info->win_func_ptr.segoff, 0x0);
100 SET_FARVAR(seg, info->bytes_per_scanline, modeinfo.linesize);
101 SET_FARVAR(seg, info->xres, modeinfo.width);
102 SET_FARVAR(seg, info->yres, modeinfo.height);
103 SET_FARVAR(seg, info->xcharsize, 8);
104 SET_FARVAR(seg, info->ycharsize, 16);
105 if (modeinfo.depth == 4)
106 SET_FARVAR(seg, info->planes, 4);
108 SET_FARVAR(seg, info->planes, 1);
109 SET_FARVAR(seg, info->bits_per_pixel, modeinfo.depth);
110 SET_FARVAR(seg, info->banks,
111 (modeinfo.linesize * modeinfo.height + 65535) / 65536);
112 if (modeinfo.depth == 4)
113 SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PLANAR);
114 else if (modeinfo.depth == 8)
115 SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PACKED_PIXEL);
117 SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_DIRECT_COLOR);
118 SET_FARVAR(seg, info->bank_size, 0);
119 u32 pages = modeinfo.vram_size / (modeinfo.height * modeinfo.linesize);
120 if (modeinfo.depth == 4)
121 SET_FARVAR(seg, info->pages, (pages / 4) - 1);
123 SET_FARVAR(seg, info->pages, pages - 1);
124 SET_FARVAR(seg, info->reserved0, 1);
126 u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
128 switch (modeinfo.depth) {
129 case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5;
130 b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break;
131 case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5;
132 b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break;
133 case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
134 b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break;
135 case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
136 b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break;
137 default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0;
138 b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break;
141 SET_FARVAR(seg, info->red_size, r_size);
142 SET_FARVAR(seg, info->red_pos, r_pos);
143 SET_FARVAR(seg, info->green_size, g_size);
144 SET_FARVAR(seg, info->green_pos, g_pos);
145 SET_FARVAR(seg, info->blue_size, b_size);
146 SET_FARVAR(seg, info->blue_pos, b_pos);
147 SET_FARVAR(seg, info->alpha_size, a_size);
148 SET_FARVAR(seg, info->alpha_pos, a_pos);
150 if (modeinfo.depth == 32)
151 SET_FARVAR(seg, info->directcolor_info,
152 VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE);
154 SET_FARVAR(seg, info->directcolor_info, 0);
156 if (modeinfo.depth > 4)
157 SET_FARVAR(seg, info->phys_base, modeinfo.phys_base);
159 SET_FARVAR(seg, info->phys_base, 0);
161 SET_FARVAR(seg, info->reserved1, 0);
162 SET_FARVAR(seg, info->reserved2, 0);
163 SET_FARVAR(seg, info->linear_bytes_per_scanline, modeinfo.linesize);
164 SET_FARVAR(seg, info->bank_pages, 0);
165 SET_FARVAR(seg, info->linear_pages, 0);
166 SET_FARVAR(seg, info->linear_red_size, r_size);
167 SET_FARVAR(seg, info->linear_red_pos, r_pos);
168 SET_FARVAR(seg, info->linear_green_size, g_size);
169 SET_FARVAR(seg, info->linear_green_pos, g_pos);
170 SET_FARVAR(seg, info->linear_blue_size, b_size);
171 SET_FARVAR(seg, info->linear_blue_pos, b_pos);
172 SET_FARVAR(seg, info->linear_alpha_size, a_size);
173 SET_FARVAR(seg, info->linear_alpha_pos, a_pos);
174 SET_FARVAR(seg, info->pixclock_max, 0);
176 regs->al = regs->ah; /* 0x4F, Function supported */
177 regs->ah = 0x0; /* 0x0, Function call successful */
181 vbe_104f02(struct bregs *regs)
183 dprintf(1, "VBE mode set: %x\n", regs->bx);
185 int mode = regs->bx & 0x1ff;
186 int flags = regs->bx & (MF_CUSTOMCRTC|MF_LINEARFB|MF_NOCLEARMEM);
187 int ret = vgahw_set_mode(mode, flags);
194 vbe_104f03(struct bregs *regs)
196 if (!bochsvga_hires_enabled()) {
197 regs->bx = GET_BDA(video_mode);
199 regs->bx = bochsvga_curr_mode();
202 dprintf(1, "VBE current mode=%x\n", regs->bx);
204 regs->al = regs->ah; /* 0x4F, Function supported */
205 regs->ah = 0x0; /* 0x0, Function call successful */
209 vbe_104f04(struct bregs *regs)
216 vbe_104f05(struct bregs *regs)
223 vbe_104f06(struct bregs *regs)
230 vbe_104f07(struct bregs *regs)
237 vbe_104f08(struct bregs *regs)
244 vbe_104f0a(struct bregs *regs)
251 vbe_104fXX(struct bregs *regs)
258 handle_104f(struct bregs *regs)
260 if (!bochsvga_enabled()) {
266 case 0x00: vbe_104f00(regs); break;
267 case 0x01: vbe_104f01(regs); break;
268 case 0x02: vbe_104f02(regs); break;
269 case 0x03: vbe_104f03(regs); break;
270 case 0x04: vbe_104f04(regs); break;
271 case 0x05: vbe_104f05(regs); break;
272 case 0x06: vbe_104f06(regs); break;
273 case 0x07: vbe_104f07(regs); break;
274 case 0x08: vbe_104f08(regs); break;
275 case 0x0a: vbe_104f0a(regs); break;
276 default: vbe_104fXX(regs); break;