1 /* 2 * Copyright 2007 Haiku, Inc. 3 * Distributed under the terms of the MIT License. 4 * 5 * arch-specific config manager 6 * 7 * Authors (in chronological order): 8 * François Revol (revol@free.fr) 9 */ 10 11 12 #include <KernelExport.h> 13 #include "ISA.h" 14 #include "arch_cpu.h" 15 #include "isa_arch.h" 16 17 //#define TRACE_ISA 18 #ifdef TRACE_ISA 19 # define TRACE(x) dprintf x 20 #else 21 # define TRACE(x) ; 22 #endif 23 24 25 uint8 26 arch_isa_read_io_8(int mapped_io_addr) 27 { 28 uint8 value = in8(mapped_io_addr); 29 30 TRACE(("isa_read8(%x->%x)\n", mapped_io_addr, value)); 31 32 return value; 33 } 34 35 36 void 37 arch_isa_write_io_8(int mapped_io_addr, uint8 value) 38 { 39 TRACE(("isa_write8(%x->%x)\n", value, mapped_io_addr)); 40 41 out8(value, mapped_io_addr); 42 } 43 44 45 uint16 46 arch_isa_read_io_16(int mapped_io_addr) 47 { 48 return in16(mapped_io_addr); 49 } 50 51 52 void 53 arch_isa_write_io_16(int mapped_io_addr, uint16 value) 54 { 55 out16(value, mapped_io_addr); 56 } 57 58 59 uint32 60 arch_isa_read_io_32(int mapped_io_addr) 61 { 62 return in32(mapped_io_addr); 63 } 64 65 66 void 67 arch_isa_write_io_32(int mapped_io_addr, uint32 value) 68 { 69 out32(value, mapped_io_addr); 70 } 71 72 73 phys_addr_t 74 arch_isa_ram_address(phys_addr_t physical_address_in_system_memory) 75 { 76 // this is what the BeOS kernel does 77 return physical_address_in_system_memory; 78 } 79 80 81 status_t 82 arch_isa_init(void) 83 { 84 return B_OK; 85 } 86