1 /*- 2 * Copyright (c) 2000 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 UINT8 55 AcpiOsIn8(ACPI_IO_ADDRESS InPort) 56 { 57 return(bus_space_read_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort)); 58 } 59 60 UINT16 61 AcpiOsIn16(ACPI_IO_ADDRESS InPort) 62 { 63 return(bus_space_read_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort)); 64 } 65 66 UINT32 67 AcpiOsIn32(ACPI_IO_ADDRESS InPort) 68 { 69 return(bus_space_read_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort)); 70 } 71 72 void 73 AcpiOsOut8(ACPI_IO_ADDRESS OutPort, UINT8 Value) 74 { 75 bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 76 } 77 78 void 79 AcpiOsOut16(ACPI_IO_ADDRESS OutPort, UINT16 Value) 80 { 81 bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 82 } 83 84 void 85 AcpiOsOut32(ACPI_IO_ADDRESS OutPort, UINT32 Value) 86 { 87 bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 88 } 89 90 ACPI_STATUS 91 AcpiOsReadPciCfgByte (UINT32 Bus, UINT32 DeviceFunction, UINT32 Register, UINT8 *Value) 92 { 93 u_int32_t result; 94 95 if (!pci_cfgregopen()) 96 return(AE_NOT_EXIST); 97 result = pci_cfgregread(Bus, DeviceFunction >> 16, DeviceFunction & 0xff, Register, 1); 98 *Value = (UINT8)result; 99 return(AE_OK); 100 } 101 102 ACPI_STATUS 103 AcpiOsReadPciCfgWord (UINT32 Bus, UINT32 DeviceFunction, UINT32 Register, UINT16 *Value) 104 { 105 u_int32_t result; 106 107 if (!pci_cfgregopen()) 108 return(AE_NOT_EXIST); 109 result = pci_cfgregread(Bus, DeviceFunction >> 16, DeviceFunction & 0xff, Register, 2); 110 *Value = (UINT16)result; 111 return(AE_OK); 112 } 113 114 ACPI_STATUS 115 AcpiOsReadPciCfgDword (UINT32 Bus, UINT32 DeviceFunction, UINT32 Register, UINT32 *Value) 116 { 117 if (!pci_cfgregopen()) 118 return(AE_NOT_EXIST); 119 *Value = pci_cfgregread(Bus, DeviceFunction >> 16, DeviceFunction & 0xff, Register, 4); 120 return(AE_OK); 121 } 122 123 ACPI_STATUS 124 AcpiOsWritePciCfgByte (UINT32 Bus, UINT32 DeviceFunction, UINT32 Register, UINT8 Value) 125 { 126 if (!pci_cfgregopen()) 127 return(AE_NOT_EXIST); 128 pci_cfgregwrite(Bus, DeviceFunction >> 16, DeviceFunction & 0xff, Register, (u_int32_t)Value, 1); 129 return(AE_OK); 130 } 131 132 ACPI_STATUS 133 AcpiOsWritePciCfgWord (UINT32 Bus, UINT32 DeviceFunction, UINT32 Register, UINT16 Value) 134 { 135 if (!pci_cfgregopen()) 136 return(AE_NOT_EXIST); 137 pci_cfgregwrite(Bus, DeviceFunction >> 16, DeviceFunction & 0xff, Register, (u_int32_t)Value, 2); 138 return(AE_OK); 139 } 140 141 ACPI_STATUS 142 AcpiOsWritePciCfgDword (UINT32 Bus, UINT32 DeviceFunction, UINT32 Register, UINT32 Value) 143 { 144 if (!pci_cfgregopen()) 145 return(AE_NOT_EXIST); 146 pci_cfgregwrite(Bus, DeviceFunction >> 16, DeviceFunction & 0xff, Register, (u_int32_t)Value, 4); 147 return(AE_OK); 148 } 149