1/* 2 * Copyright 2005-2009, Axel D��rfler, axeld@pinc-software.de. 3 * Copyright 2016, Jessica Hamilton, jessica.l.hamilton@gmail.com. 4 * Distributed under the terms of the MIT License. 5 */ 6 7 8#include <OS.h> 9#include <KernelExport.h> 10#include <SupportDefs.h> 11#include <PCI.h> 12#include <frame_buffer_console.h> 13#include <boot_item.h> 14#include <vesa_info.h> 15 16#include <stdlib.h> 17#include <stdio.h> 18#include <string.h> 19#include <malloc.h> 20 21#include "driver.h" 22#include "device.h" 23 24 25#define TRACE_DRIVER 26#ifdef TRACE_DRIVER 27# define TRACE(x) dprintf x 28#else 29# define TRACE(x) ; 30#endif 31 32#define MAX_CARDS 1 33 34 35int32 api_version = B_CUR_DRIVER_API_VERSION; 36 37char* gDeviceNames[MAX_CARDS + 1]; 38framebuffer_info* gDeviceInfo[MAX_CARDS]; 39mutex gLock; 40 41 42extern "C" const char** 43publish_devices(void) 44{ 45 TRACE((DEVICE_NAME ": publish_devices()\n")); 46 return (const char**)gDeviceNames; 47} 48 49 50extern "C" status_t 51init_hardware(void) 52{ 53 TRACE((DEVICE_NAME ": init_hardware()\n")); 54 55 // If we don't have a VESA mode list, then we are a dumb 56 // framebuffer, e.g. when there are no drivers available 57 // on a UEFI system. 58 return (get_boot_item(VESA_MODES_BOOT_INFO, NULL) == NULL 59 && get_boot_item(FRAME_BUFFER_BOOT_INFO, NULL) != NULL) 60 ? B_OK : B_ERROR; 61} 62 63 64extern "C" status_t 65init_driver(void) 66{ 67 TRACE((DEVICE_NAME ": init_driver()\n")); 68 69 gDeviceInfo[0] = (framebuffer_info*)malloc(sizeof(framebuffer_info)); 70 if (gDeviceInfo[0] == NULL) 71 return B_NO_MEMORY; 72 73 memset(gDeviceInfo[0], 0, sizeof(framebuffer_info)); 74 75 gDeviceNames[0] = strdup("graphics/framebuffer"); 76 if (gDeviceNames[0] == NULL) { 77 free(gDeviceNames[0]); 78 return B_NO_MEMORY; 79 } 80 81 gDeviceNames[1] = NULL; 82 83 mutex_init(&gLock, "framebuffer lock"); 84 return B_OK; 85} 86 87 88extern "C" void 89uninit_driver(void) 90{ 91 TRACE((DEVICE_NAME ": uninit_driver()\n")); 92 93 mutex_destroy(&gLock); 94 95 // free device related structures 96 char* name; 97 for (int32 index = 0; (name = gDeviceNames[index]) != NULL; index++) { 98 free(gDeviceInfo[index]); 99 free(name); 100 } 101} 102 103 104extern "C" device_hooks* 105find_device(const char* name) 106{ 107 int index; 108 109 TRACE((DEVICE_NAME ": find_device()\n")); 110 111 for (index = 0; gDeviceNames[index] != NULL; index++) { 112 if (!strcmp(name, gDeviceNames[index])) 113 return &gDeviceHooks; 114 } 115 116 return NULL; 117} 118 119