1 /*- 2 * Copyright (c) 2000, 2001 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 /* 31 * 6.7 : Hardware Abstraction 32 */ 33 34 #include "acpi.h" 35 36 #include <machine/bus_pio.h> 37 #include <machine/bus.h> 38 #include <machine/pci_cfgreg.h> 39 40 /* 41 * ACPICA's rather gung-ho approach to hardware resource ownership is a little 42 * troublesome insofar as there is no easy way for us to know in advance 43 * exactly which I/O resources it's going to want to use. 44 * 45 * In order to deal with this, we ignore resource ownership entirely, and simply 46 * use the native I/O space accessor functionality. This is Evil, but it works. 47 * 48 * XXX use an intermediate #define for the tag/handle 49 */ 50 51 #ifdef __i386__ 52 #define ACPI_BUS_SPACE_IO I386_BUS_SPACE_IO 53 #define ACPI_BUS_HANDLE 0 54 #endif 55 #ifdef __ia64__ 56 #define ACPI_BUS_SPACE_IO IA64_BUS_SPACE_IO 57 #define ACPI_BUS_HANDLE 0 58 #endif 59 60 ACPI_STATUS 61 AcpiOsReadPort ( 62 ACPI_IO_ADDRESS InPort, 63 void *Value, 64 UINT32 Width) 65 { 66 switch (Width) { 67 case 8: 68 *(u_int8_t *)Value = bus_space_read_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort); 69 break; 70 case 16: 71 *(u_int16_t *)Value = bus_space_read_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort); 72 break; 73 case 32: 74 *(u_int32_t *)Value = bus_space_read_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort); 75 break; 76 default: 77 /* debug trap goes here */ 78 break; 79 } 80 81 return(AE_OK); 82 } 83 84 ACPI_STATUS 85 AcpiOsWritePort ( 86 ACPI_IO_ADDRESS OutPort, 87 ACPI_INTEGER Value, 88 UINT32 Width) 89 { 90 switch (Width) { 91 case 8: 92 bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 93 break; 94 case 16: 95 bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 96 break; 97 case 32: 98 bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 99 break; 100 default: 101 /* debug trap goes here */ 102 break; 103 } 104 105 return(AE_OK); 106 } 107 108 ACPI_STATUS 109 AcpiOsReadPciConfiguration ( 110 ACPI_PCI_ID *PciId, 111 UINT32 Register, 112 void *Value, 113 UINT32 Width) 114 { 115 u_int32_t byte_width = Width / 8; 116 u_int32_t val; 117 118 if (!pci_cfgregopen()) 119 return(AE_NOT_EXIST); 120 121 val = pci_cfgregread(PciId->Bus, PciId->Device, PciId->Function, Register, byte_width); 122 switch (Width) { 123 case 8: 124 *(u_int8_t *)Value = val & 0xff; 125 break; 126 case 16: 127 *(u_int16_t *)Value = val & 0xffff; 128 break; 129 case 32: 130 *(u_int32_t *)Value = val; 131 break; 132 default: 133 /* debug trap goes here */ 134 break; 135 } 136 137 138 return(AE_OK); 139 } 140 141 142 ACPI_STATUS 143 AcpiOsWritePciConfiguration ( 144 ACPI_PCI_ID *PciId, 145 UINT32 Register, 146 ACPI_INTEGER Value, 147 UINT32 Width) 148 { 149 u_int32_t byte_width = Width / 8; 150 151 if (!pci_cfgregopen()) 152 return(AE_NOT_EXIST); 153 154 pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register, Value, byte_width); 155 156 return(AE_OK); 157 } 158