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: src/sys/dev/acpica/Osd/OsdHardware.c,v 1.13 2004/04/14 03:39:08 njl Exp $ 28 */ 29 30 /* 31 * 6.7 : Hardware Abstraction 32 */ 33 34 #include "acpi.h" 35 36 #include <sys/bus.h> 37 #include <bus/pci/pci_cfgreg.h> 38 #include <bus/pci/pcireg.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 #ifdef __x86_64__ 60 #define ACPI_BUS_SPACE_IO X86_64_BUS_SPACE_IO 61 #define ACPI_BUS_HANDLE 0 62 #endif 63 64 ACPI_STATUS 65 AcpiOsReadPort(ACPI_IO_ADDRESS InPort, UINT32 *Value, UINT32 Width) 66 { 67 switch (Width) { 68 case 8: 69 *(u_int8_t *)Value = bus_space_read_1(ACPI_BUS_SPACE_IO, 70 ACPI_BUS_HANDLE, InPort); 71 break; 72 case 16: 73 *(u_int16_t *)Value = bus_space_read_2(ACPI_BUS_SPACE_IO, 74 ACPI_BUS_HANDLE, InPort); 75 break; 76 case 32: 77 *(u_int32_t *)Value = bus_space_read_4(ACPI_BUS_SPACE_IO, 78 ACPI_BUS_HANDLE, InPort); 79 break; 80 default: 81 /* debug trap goes here */ 82 break; 83 } 84 85 return (AE_OK); 86 } 87 88 ACPI_STATUS 89 AcpiOsWritePort(ACPI_IO_ADDRESS OutPort, UINT32 Value, UINT32 Width) 90 { 91 switch (Width) { 92 case 8: 93 bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 94 break; 95 case 16: 96 bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 97 break; 98 case 32: 99 bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 100 break; 101 default: 102 /* debug trap goes here */ 103 break; 104 } 105 106 return (AE_OK); 107 } 108 109 ACPI_STATUS 110 AcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, UINT64 *Value, 111 UINT32 Width) 112 { 113 int bytes = Width / 8; 114 115 if (Width == 64) 116 return (AE_SUPPORT); 117 118 if (!pci_cfgregopen()) 119 return (AE_NOT_EXIST); 120 121 *Value = pci_cfgregread(PciId->Bus, PciId->Device, 122 PciId->Function, Register, bytes); 123 *Value &= (1 << (bytes * 8)) - 1; 124 125 return (AE_OK); 126 } 127 128 129 ACPI_STATUS 130 AcpiOsWritePciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, 131 UINT64 Value, UINT32 Width) 132 { 133 if (Width == 64) 134 return (AE_SUPPORT); 135 136 if (!pci_cfgregopen()) 137 return (AE_NOT_EXIST); 138 139 pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register, 140 (u_int32_t)Value, Width / 8); /* XXX casting */ 141 142 return (AE_OK); 143 } 144