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| Rev | Author | Line No. | Line |
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| 1287 | vana | 1 | /* |
| 1310 | jermar | 2 | * Copyright (C) 2006 Jakub Vana |
| 1287 | vana | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #ifdef CONFIG_FB |
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| 30 | |||
| 31 | #include <genarch/fb/fb.h> |
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| 32 | #include <arch/vesa.h> |
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| 33 | #include <putchar.h> |
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| 34 | #include <mm/page.h> |
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| 1289 | vana | 35 | #include <mm/frame.h> |
| 1287 | vana | 36 | #include <mm/as.h> |
| 37 | #include <arch/mm/page.h> |
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| 38 | #include <synch/spinlock.h> |
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| 1310 | jermar | 39 | #include <arch/asm.h> |
| 1287 | vana | 40 | #include <arch/types.h> |
| 1310 | jermar | 41 | #include <typedefs.h> |
| 1287 | vana | 42 | #include <memstr.h> |
| 1310 | jermar | 43 | #include <bitops.h> |
| 1287 | vana | 44 | |
| 45 | __u32 vesa_ph_addr; |
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| 46 | __u16 vesa_width; |
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| 47 | __u16 vesa_height; |
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| 48 | __u16 vesa_bpp; |
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| 49 | __u16 vesa_scanline; |
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| 50 | |||
| 51 | int vesa_present(void) |
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| 52 | { |
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| 1310 | jermar | 53 | if (vesa_width != 0xffff) |
| 54 | return true; |
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| 55 | if (vesa_height != 0xffff) |
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| 56 | return true; |
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| 1287 | vana | 57 | return false; |
| 58 | } |
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| 59 | |||
| 1310 | jermar | 60 | static count_t vesa_frame_order(void) |
| 61 | { |
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| 62 | __u32 x = vesa_scanline*vesa_height; |
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| 63 | if (x <= FRAME_SIZE) |
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| 1311 | jermar | 64 | return 0; |
| 1287 | vana | 65 | |
| 1310 | jermar | 66 | return (fnzb32(x - 1) + 1) - FRAME_WIDTH; |
| 1289 | vana | 67 | } |
| 68 | |||
| 1287 | vana | 69 | void vesa_init(void) |
| 70 | { |
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| 71 | int a; |
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| 1310 | jermar | 72 | __address vram_lin_addr; |
| 1287 | vana | 73 | |
| 1310 | jermar | 74 | vram_lin_addr = PA2KA(PFN2ADDR(frame_alloc(vesa_frame_order(), FRAME_KA))); |
| 75 | /* Map videoram */ |
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| 76 | for (a = 0; a < ((vesa_scanline * vesa_height + PAGE_SIZE - 1) >> PAGE_WIDTH); a++) |
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| 77 | page_mapping_insert(AS_KERNEL, vram_lin_addr+a*4096, vesa_ph_addr+a*4096, PAGE_NOT_CACHEABLE); |
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| 1289 | vana | 78 | |
| 1310 | jermar | 79 | fb_init(vram_lin_addr, vesa_width, vesa_height, vesa_bpp, vesa_scanline); |
| 1287 | vana | 80 | } |
| 81 | |||
| 82 | #endif |