1 /* 2 * Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 6 7 #include <SupportDefs.h> 8 #include <platform/openfirmware/openfirmware.h> 9 #include <util/kernel_cpp.h> 10 11 #include "Handle.h" 12 #include "toscalls." 13 14 /* 15 * (X)BIOS supports char and block devices with a separate namespace 16 * for char devs handle is {DEV_PRINTER, ... DEV_CONSOLE, ...} 17 * for block devs handle is either: 18 * - the partition number {0=A:, 2=C:...} in logical mode. 19 * - the drive number {0=A:, 1=B:, 2=ACSI-0, 10=SCSI-0, ...} 20 * in phys mode (RW_NOTRANSLATE). 21 * BlockHandle is in devices.cpp 22 * 23 * XXX: handle network devices ? not sure how TOS net extensions do this 24 * not sure it'll ever be supported anyway. 25 * XXX: BIOSDrive/BIOSHandle : public BlockHandle ? 26 */ 27 28 Handle::Handle(int handle) 29 : 30 fHandle((int16)handle), 31 { 32 } 33 34 35 Handle::Handle(void) 36 : 37 fHandle(DEV_CONSOLE) 38 { 39 } 40 41 42 Handle::~Handle() 43 { 44 } 45 46 47 void 48 Handle::SetHandle(int handle) 49 { 50 fHandle = (int16)handle; 51 } 52 53 54 ssize_t 55 Handle::ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize) 56 { 57 return B_ERROR; 58 } 59 60 61 ssize_t 62 Handle::WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize) 63 { 64 return B_ERROR; 65 } 66 67 68 off_t 69 Handle::Size() const 70 { 71 // ToDo: fix this! 72 return 1024LL * 1024 * 1024 * 1024; 73 // 1024 GB 74 } 75 76 77 // #pragma mark - 78 79 80 CharHandle::CharHandle(int handle) 81 : Handle(handle) 82 { 83 } 84 85 86 CharHandle::CharHandle(void) 87 : Handle() 88 { 89 } 90 91 92 CharHandle::~CharHandle() 93 { 94 } 95 96 97 ssize_t 98 CharHandle::ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize) 99 { 100 const char *string = (const char *)buffer; 101 102 // can't seek 103 for (i = 0; i < bufferSize; i++) { 104 if (Bconstat(fHandle) == 0) 105 return i; 106 string[i] = (char)Bconin(fHandle); 107 } 108 109 return bufferSize; 110 } 111 112 113 ssize_t 114 CharHandle::WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize) 115 { 116 const char *string = (const char *)buffer; 117 118 // can't seek 119 120 //XXX: check Bcostat ? 121 for (i = 0; i < bufferSize; i++) { 122 Bconout(fHandle, string[i]); 123 } 124 125 return bufferSize; 126 } 127 128 129 off_t 130 CharHandle::Size() const 131 { 132 // ToDo: fix this! 133 return 1024LL * 1024 * 1024 * 1024; 134 // 1024 GB 135 } 136 137