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// Video Bios Extensions handlers
//
// Copyright (C) 2009 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2001-2008 the LGPL VGABios developers Team
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "vgabios.h" // handle_104f
#include "config.h" // CONFIG_*
#include "bregs.h" // struct bregs
#include "vbe.h" // struct vbe_info
#include "util.h" // dprintf
#include "biosvar.h" // get_global_set
#include "bochsvga.h" // bochsvga_hires_enabled
#include "vgahw.h" // vgahw_set_mode
static void
vbe_104f00(struct bregs *regs)
{
u16 seg = regs->es;
struct vbe_info *info = (void*)(regs->di+0);
if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) {
dprintf(4, "Get VBE Controller: VBE2 Signature found\n");
} else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) {
dprintf(4, "Get VBE Controller: VESA Signature found\n");
} else {
dprintf(4, "Get VBE Controller: Invalid Signature\n");
}
memset_far(seg, info, 0, sizeof(*info));
SET_FARVAR(seg, info->signature, VESA_SIGNATURE);
SET_FARVAR(seg, info->version, 0x0200);
SET_FARVAR(seg, info->oem_string,
SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING));
SET_FARVAR(seg, info->capabilities, 0x1); /* 8BIT DAC */
/* We generate our mode list in the reserved field of the info block */
SET_FARVAR(seg, info->video_mode, SEGOFF(seg, regs->di + 34));
/* Total memory (in 64 blocks) */
SET_FARVAR(seg, info->total_memory, bochsvga_total_mem());
SET_FARVAR(seg, info->oem_vendor_string,
SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING));
SET_FARVAR(seg, info->oem_product_string,
SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING));
SET_FARVAR(seg, info->oem_revision_string,
SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING));
/* Fill list of modes */
bochsvga_list_modes(seg, regs->di + 32);
regs->al = regs->ah; /* 0x4F, Function supported */
regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
vbe_104f01(struct bregs *regs)
{
u16 seg = regs->es;
struct vbe_mode_info *info = (void*)(regs->di+0);
u16 mode = regs->cx;
struct vbe_modeinfo modeinfo;
int rc;
dprintf(1, "VBE mode info request: %x\n", mode);
rc = bochsvga_mode_info(mode, &modeinfo);
if (rc) {
dprintf(1, "VBE mode %x not found\n", mode);
regs->ax = 0x100;
return;
}
u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED |
VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE |
VBE_MODE_ATTRIBUTE_COLOR_MODE |
VBE_MODE_ATTRIBUTE_GRAPHICS_MODE;
if (modeinfo.depth == 4)
mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT;
else
mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE;
SET_FARVAR(seg, info->mode_attributes, mode_attr);
SET_FARVAR(seg, info->winA_attributes,
VBE_WINDOW_ATTRIBUTE_RELOCATABLE |
VBE_WINDOW_ATTRIBUTE_READABLE |
VBE_WINDOW_ATTRIBUTE_WRITEABLE);
SET_FARVAR(seg, info->winB_attributes, 0);
SET_FARVAR(seg, info->win_granularity, 64); /* Bank size 64K */
SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */
SET_FARVAR(seg, info->winA_seg, 0xA000);
SET_FARVAR(seg, info->winB_seg, 0x0);
SET_FARVAR(seg, info->win_func_ptr.segoff, 0x0);
SET_FARVAR(seg, info->bytes_per_scanline, modeinfo.linesize);
SET_FARVAR(seg, info->xres, modeinfo.width);
SET_FARVAR(seg, info->yres, modeinfo.height);
SET_FARVAR(seg, info->xcharsize, 8);
SET_FARVAR(seg, info->ycharsize, 16);
if (modeinfo.depth == 4)
SET_FARVAR(seg, info->planes, 4);
else
SET_FARVAR(seg, info->planes, 1);
SET_FARVAR(seg, info->bits_per_pixel, modeinfo.depth);
SET_FARVAR(seg, info->banks,
(modeinfo.linesize * modeinfo.height + 65535) / 65536);
if (modeinfo.depth == 4)
SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PLANAR);
else if (modeinfo.depth == 8)
SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PACKED_PIXEL);
else
SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_DIRECT_COLOR);
SET_FARVAR(seg, info->bank_size, 0);
u32 pages = modeinfo.vram_size / (modeinfo.height * modeinfo.linesize);
if (modeinfo.depth == 4)
SET_FARVAR(seg, info->pages, (pages / 4) - 1);
else
SET_FARVAR(seg, info->pages, pages - 1);
SET_FARVAR(seg, info->reserved0, 1);
u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
switch (modeinfo.depth) {
case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5;
b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break;
case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5;
b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break;
case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break;
case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break;
default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0;
b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break;
}
SET_FARVAR(seg, info->red_size, r_size);
SET_FARVAR(seg, info->red_pos, r_pos);
SET_FARVAR(seg, info->green_size, g_size);
SET_FARVAR(seg, info->green_pos, g_pos);
SET_FARVAR(seg, info->blue_size, b_size);
SET_FARVAR(seg, info->blue_pos, b_pos);
SET_FARVAR(seg, info->alpha_size, a_size);
SET_FARVAR(seg, info->alpha_pos, a_pos);
if (modeinfo.depth == 32)
SET_FARVAR(seg, info->directcolor_info,
VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE);
else
SET_FARVAR(seg, info->directcolor_info, 0);
if (modeinfo.depth > 4)
SET_FARVAR(seg, info->phys_base, modeinfo.phys_base);
else
SET_FARVAR(seg, info->phys_base, 0);
SET_FARVAR(seg, info->reserved1, 0);
SET_FARVAR(seg, info->reserved2, 0);
SET_FARVAR(seg, info->linear_bytes_per_scanline, modeinfo.linesize);
SET_FARVAR(seg, info->bank_pages, 0);
SET_FARVAR(seg, info->linear_pages, 0);
SET_FARVAR(seg, info->linear_red_size, r_size);
SET_FARVAR(seg, info->linear_red_pos, r_pos);
SET_FARVAR(seg, info->linear_green_size, g_size);
SET_FARVAR(seg, info->linear_green_pos, g_pos);
SET_FARVAR(seg, info->linear_blue_size, b_size);
SET_FARVAR(seg, info->linear_blue_pos, b_pos);
SET_FARVAR(seg, info->linear_alpha_size, a_size);
SET_FARVAR(seg, info->linear_alpha_pos, a_pos);
SET_FARVAR(seg, info->pixclock_max, 0);
regs->al = regs->ah; /* 0x4F, Function supported */
regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
vbe_104f02(struct bregs *regs)
{
dprintf(1, "VBE mode set: %x\n", regs->bx);
int mode = regs->bx & 0x1ff;
int flags = regs->bx & (MF_CUSTOMCRTC|MF_LINEARFB|MF_NOCLEARMEM);
int ret = vgahw_set_mode(mode, flags);
regs->ah = ret;
regs->al = 0x4f;
}
static void
vbe_104f03(struct bregs *regs)
{
if (!bochsvga_hires_enabled()) {
regs->bx = GET_BDA(video_mode);
} else {
regs->bx = bochsvga_curr_mode();
}
dprintf(1, "VBE current mode=%x\n", regs->bx);
regs->al = regs->ah; /* 0x4F, Function supported */
regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
vbe_104f04(struct bregs *regs)
{
debug_stub(regs);
regs->ax = 0x0100;
}
static void
vbe_104f05(struct bregs *regs)
{
debug_stub(regs);
regs->ax = 0x0100;
}
static void
vbe_104f06(struct bregs *regs)
{
debug_stub(regs);
regs->ax = 0x0100;
}
static void
vbe_104f07(struct bregs *regs)
{
debug_stub(regs);
regs->ax = 0x0100;
}
static void
vbe_104f08(struct bregs *regs)
{
debug_stub(regs);
regs->ax = 0x0100;
}
static void
vbe_104f0a(struct bregs *regs)
{
debug_stub(regs);
regs->ax = 0x0100;
}
static void
vbe_104fXX(struct bregs *regs)
{
debug_stub(regs);
regs->ax = 0x0100;
}
void
handle_104f(struct bregs *regs)
{
if (!bochsvga_enabled()) {
vbe_104fXX(regs);
return;
}
switch (regs->al) {
case 0x00: vbe_104f00(regs); break;
case 0x01: vbe_104f01(regs); break;
case 0x02: vbe_104f02(regs); break;
case 0x03: vbe_104f03(regs); break;
case 0x04: vbe_104f04(regs); break;
case 0x05: vbe_104f05(regs); break;
case 0x06: vbe_104f06(regs); break;
case 0x07: vbe_104f07(regs); break;
case 0x08: vbe_104f08(regs); break;
case 0x0a: vbe_104f0a(regs); break;
default: vbe_104fXX(regs); break;
}
}