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 } 79 80 return(AE_OK); 81 } 82 83 ACPI_STATUS 84 AcpiOsWritePort ( 85 ACPI_IO_ADDRESS OutPort, 86 NATIVE_UINT Value, 87 UINT32 Width) 88 { 89 switch (Width) { 90 case 8: 91 bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 92 break; 93 case 16: 94 bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 95 break; 96 case 32: 97 bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 98 break; 99 default: 100 /* debug trap goes here */ 101 } 102 103 return(AE_OK); 104 } 105 106 ACPI_STATUS 107 AcpiOsReadPciConfiguration ( 108 ACPI_PCI_ID *PciId, 109 UINT32 Register, 110 void *Value, 111 UINT32 Width) 112 { 113 u_int32_t byte_width = Width / 8; 114 u_int32_t val; 115 116 if (!pci_cfgregopen()) 117 return(AE_NOT_EXIST); 118 119 val = pci_cfgregread(PciId->Bus, PciId->Device, PciId->Function, Register, byte_width); 120 switch (Width) { 121 case 8: 122 *(u_int8_t *)Value = val & 0xff; 123 break; 124 case 16: 125 *(u_int16_t *)Value = val & 0xffff; 126 break; 127 case 32: 128 *(u_int32_t *)Value = val; 129 break; 130 default: 131 /* debug trap goes here */ 132 } 133 134 135 return(AE_OK); 136 } 137 138 139 ACPI_STATUS 140 AcpiOsWritePciConfiguration ( 141 ACPI_PCI_ID *PciId, 142 UINT32 Register, 143 NATIVE_UINT Value, 144 UINT32 Width) 145 { 146 u_int32_t byte_width = Width / 8; 147 148 if (!pci_cfgregopen()) 149 return(AE_NOT_EXIST); 150 151 pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register, Value, byte_width); 152 153 return(AE_OK); 154 } 155