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/* ----------------------------------------------------------------------- *
*
* Copyright 2008 H. Peter Anvin - All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* ----------------------------------------------------------------------- */
#include <inttypes.h>
#include <minmax.h>
#include <klibc/compiler.h>
#include <string.h>
#include <com32.h>
#include <ilog2.h>
#include "vesa.h"
#include "video.h"
static struct win_info {
char *win_base;
size_t win_pos;
size_t win_size;
int win_gshift;
int win_num;
} wi;
void __vesacon_init_copy_to_screen(void)
{
struct vesa_mode_info *const mi = &__vesa_info.mi;
if (mi->mode_attr & 0x0080) {
/* Linear frame buffer */
wi.win_base = (char *)mi->lfb_ptr;
wi.win_size = mi->lfb_line_size*mi->v_res; /* one giant window */
wi.win_pos = 0; /* Already positioned (only one position...) */
wi.win_num = -1; /* Not a window */
}
/* FIXME: PixelBltOnly mode is unsupported */
}
void __vesacon_copy_to_screen(size_t dst, const uint32_t * src, size_t npixels)
{
size_t win_off;
char *win_base = wi.win_base;
size_t bytes = npixels * __vesacon_bytes_per_pixel;
char rowbuf[bytes + 4] __aligned(4);
const char *s;
s = (const char *)__vesacon_format_pixels(rowbuf, src, npixels);
/* For EFI, we simply take the offset from the framebuffer and write to it
* FIXME: any gotchas?
*/
win_off = dst;
memcpy(win_base + win_off, s, bytes);
}
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