1 /* ----------------------------------------------------------------------- * 2 * 3 * Copyright 2008 H. Peter Anvin - All Rights Reserved 4 * 5 * Permission is hereby granted, free of charge, to any person 6 * obtaining a copy of this software and associated documentation 7 * files (the "Software"), to deal in the Software without 8 * restriction, including without limitation the rights to use, 9 * copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom 11 * the Software is furnished to do so, subject to the following 12 * conditions: 13 * 14 * The above copyright notice and this permission notice shall 15 * be included in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 19 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 21 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 24 * OTHER DEALINGS IN THE SOFTWARE. 25 * 26 * ----------------------------------------------------------------------- */ 27 28 #include <inttypes.h> 29 #include <minmax.h> 30 #include <klibc/compiler.h> 31 #include <string.h> 32 #include <com32.h> 33 #include <ilog2.h> 34 #include "vesa.h" 35 #include "video.h" 36 37 38 static struct win_info wi; 39 40 void __vesacon_init_copy_to_screen(void) 41 { 42 struct vesa_mode_info *const mi = &__vesa_info.mi; 43 int winn; 44 45 if (mi->mode_attr & 0x0080) { 46 /* Linear frame buffer */ 47 48 wi.win_base = (char *)mi->lfb_ptr; 49 wi.win_size = 1 << 31; /* 2 GB, i.e. one huge window */ 50 wi.win_pos = 0; /* Already positioned (only one position...) */ 51 wi.win_num = -1; /* Not a window */ 52 } else { 53 /* Paged frame buffer */ 54 55 /* We have already tested that *one* of these is usable */ 56 if ((mi->win_attr[0] & 0x05) == 0x05 && mi->win_seg[0]) 57 winn = 0; 58 else 59 winn = 1; 60 61 wi.win_num = winn; 62 wi.win_base = (char *)(mi->win_seg[winn] << 4); 63 wi.win_size = mi->win_size << 10; 64 wi.win_gshift = ilog2(mi->win_grain) + 10; 65 wi.win_pos = -1; /* Undefined position */ 66 } 67 } 68 69 void __vesacon_copy_to_screen(size_t dst, const uint32_t * src, size_t npixels) 70 { 71 size_t bytes = npixels * __vesacon_bytes_per_pixel; 72 char rowbuf[bytes + 4] __aligned(4); 73 const uint32_t *s; 74 75 s = (const uint32_t *)__vesacon_format_pixels(rowbuf, src, npixels); 76 firmware->vesa->screencpy(dst, s, bytes, &wi); 77 } 78
