1 /* 2 * Copyright 2005-2006, Axel Dörfler, axeld@pinc-software.de. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 6 7 #include <boot_item.h> 8 #include <frame_buffer_console.h> 9 10 #include "vesa_info.h" 11 #include "driver.h" 12 #include "utility.h" 13 14 #include "util/kernel_cpp.h" 15 16 #include <string.h> 17 18 19 class PhysicalMemoryMapper { 20 public: 21 PhysicalMemoryMapper(); 22 ~PhysicalMemoryMapper(); 23 24 area_id Map(const char *name, void *physicalAddress, size_t numBytes, 25 uint32 spec, uint32 protection, void **virtualAddress); 26 status_t InitCheck() { return fArea < B_OK ? (status_t)fArea : B_OK; } 27 void Keep(); 28 29 private: 30 area_id fArea; 31 }; 32 33 34 PhysicalMemoryMapper::PhysicalMemoryMapper() 35 : 36 fArea(-1) 37 { 38 } 39 40 41 PhysicalMemoryMapper::~PhysicalMemoryMapper() 42 { 43 if (fArea >= B_OK) 44 delete_area(fArea); 45 } 46 47 48 area_id 49 PhysicalMemoryMapper::Map(const char *name, void *physicalAddress, 50 size_t numBytes, uint32 spec, uint32 protection, void **virtualAddress) 51 { 52 fArea = map_physical_memory(name, physicalAddress, numBytes, spec, 53 protection, virtualAddress); 54 return fArea; 55 } 56 57 58 void 59 PhysicalMemoryMapper::Keep() 60 { 61 fArea = -1; 62 } 63 64 65 // #pragma mark - 66 67 68 status_t 69 vesa_init(vesa_info &info) 70 { 71 frame_buffer_boot_info *bufferInfo 72 = (frame_buffer_boot_info *)get_boot_item(FRAME_BUFFER_BOOT_INFO); 73 if (bufferInfo == NULL) 74 return B_ERROR; 75 76 info.shared_area = create_area("vesa shared info", (void **)&info.shared_info, 77 B_ANY_KERNEL_ADDRESS, ROUND_TO_PAGE_SIZE(sizeof(vesa_shared_info)), 78 B_FULL_LOCK, 79 B_KERNEL_READ_AREA | B_KERNEL_WRITE_AREA | B_USER_CLONEABLE_AREA); 80 if (info.shared_area < B_OK) 81 return info.shared_area; 82 83 memset((void *)info.shared_info, 0, sizeof(vesa_shared_info)); 84 85 info.shared_info->frame_buffer_area = bufferInfo->area; 86 info.shared_info->frame_buffer = (uint8 *)bufferInfo->frame_buffer; 87 88 info.shared_info->current_mode.virtual_width = bufferInfo->width; 89 info.shared_info->current_mode.virtual_height = bufferInfo->height; 90 switch (bufferInfo->depth) { 91 case 4: 92 // ??? 93 break; 94 case 8: 95 info.shared_info->current_mode.space = B_CMAP8; 96 break; 97 case 15: 98 info.shared_info->current_mode.space = B_RGB15; 99 break; 100 case 16: 101 info.shared_info->current_mode.space = B_RGB16; 102 break; 103 case 24: 104 info.shared_info->current_mode.space = B_RGB24; 105 break; 106 case 32: 107 info.shared_info->current_mode.space = B_RGB32; 108 break; 109 } 110 info.shared_info->bytes_per_row = bufferInfo->bytes_per_row; 111 112 physical_entry mapping; 113 get_memory_map((void *)info.shared_info->frame_buffer, B_PAGE_SIZE, 114 &mapping, 1); 115 info.shared_info->physical_frame_buffer = (uint8 *)mapping.address; 116 117 dprintf(DEVICE_NAME ": vesa_init() completed successfully!\n"); 118 return B_OK; 119 } 120 121 122 void 123 vesa_uninit(vesa_info &info) 124 { 125 dprintf(DEVICE_NAME": vesa_uninit()\n"); 126 127 delete_area(info.shared_info->frame_buffer_area); 128 delete_area(info.shared_area); 129 } 130 131