| /* ----------------------------------------------------------------------- * |
| * |
| * 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 wi; |
| |
| void __vesacon_init_copy_to_screen(void) |
| { |
| struct vesa_mode_info *const mi = &__vesa_info.mi; |
| int winn; |
| |
| if (mi->mode_attr & 0x0080) { |
| /* Linear frame buffer */ |
| |
| wi.win_base = (char *)mi->lfb_ptr; |
| wi.win_size = 1 << 31; /* 2 GB, i.e. one huge window */ |
| wi.win_pos = 0; /* Already positioned (only one position...) */ |
| wi.win_num = -1; /* Not a window */ |
| } else { |
| /* Paged frame buffer */ |
| |
| /* We have already tested that *one* of these is usable */ |
| if ((mi->win_attr[0] & 0x05) == 0x05 && mi->win_seg[0]) |
| winn = 0; |
| else |
| winn = 1; |
| |
| wi.win_num = winn; |
| wi.win_base = (char *)(mi->win_seg[winn] << 4); |
| wi.win_size = mi->win_size << 10; |
| wi.win_gshift = ilog2(mi->win_grain) + 10; |
| wi.win_pos = -1; /* Undefined position */ |
| } |
| } |
| |
| void __vesacon_copy_to_screen(size_t dst, const uint32_t * src, size_t npixels) |
| { |
| size_t bytes = npixels * __vesacon_bytes_per_pixel; |
| char rowbuf[bytes + 4] __aligned(4); |
| const uint32_t *s; |
| |
| s = (const uint32_t *)__vesacon_format_pixels(rowbuf, src, npixels); |
| firmware->vesa->screencpy(dst, s, bytes, &wi); |
| } |