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 #define ACPI_BUS_SPACE_IO I386_BUS_SPACE_IO 52 #define ACPI_BUS_HANDLE 0 53 54 ACPI_STATUS 55 AcpiOsReadPort ( 56 ACPI_IO_ADDRESS InPort, 57 void *Value, 58 UINT32 Width) 59 { 60 switch (Width) { 61 case 8: 62 *(u_int8_t *)Value = bus_space_read_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort); 63 break; 64 case 16: 65 *(u_int16_t *)Value = bus_space_read_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort); 66 break; 67 case 32: 68 *(u_int32_t *)Value = bus_space_read_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort); 69 break; 70 default: 71 /* debug trap goes here */ 72 } 73 74 return(AE_OK); 75 } 76 77 ACPI_STATUS 78 AcpiOsWritePort ( 79 ACPI_IO_ADDRESS OutPort, 80 NATIVE_UINT Value, 81 UINT32 Width) 82 { 83 switch (Width) { 84 case 8: 85 bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 86 break; 87 case 16: 88 bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 89 break; 90 case 32: 91 bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 92 break; 93 default: 94 /* debug trap goes here */ 95 } 96 97 return(AE_OK); 98 } 99 100 ACPI_STATUS 101 AcpiOsReadPciConfiguration ( 102 ACPI_PCI_ID *PciId, 103 UINT32 Register, 104 void *Value, 105 UINT32 Width) 106 { 107 u_int32_t byte_width = Width / 8; 108 u_int32_t val; 109 110 if (!pci_cfgregopen()) 111 return(AE_NOT_EXIST); 112 113 val = pci_cfgregread(PciId->Bus, PciId->Device, PciId->Function, Register, byte_width); 114 switch (Width) { 115 case 8: 116 *(u_int8_t *)Value = val & 0xff; 117 break; 118 case 16: 119 *(u_int16_t *)Value = val & 0xffff; 120 break; 121 case 32: 122 *(u_int32_t *)Value = val; 123 break; 124 default: 125 /* debug trap goes here */ 126 } 127 128 129 return(AE_OK); 130 } 131 132 133 ACPI_STATUS 134 AcpiOsWritePciConfiguration ( 135 ACPI_PCI_ID *PciId, 136 UINT32 Register, 137 NATIVE_UINT Value, 138 UINT32 Width) 139 { 140 u_int32_t byte_width = Width / 8; 141 142 if (!pci_cfgregopen()) 143 return(AE_NOT_EXIST); 144 145 pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register, Value, byte_width); 146 147 return(AE_OK); 148 } 149