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 28 /* 29 * 6.7 : Hardware Abstraction 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <contrib/dev/acpica/include/acpi.h> 36 37 #include <machine/iodev.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 49 ACPI_STATUS 50 AcpiOsReadPort(ACPI_IO_ADDRESS InPort, UINT32 *Value, UINT32 Width) 51 { 52 53 switch (Width) { 54 case 8: 55 *Value = iodev_read_1(InPort); 56 break; 57 case 16: 58 *Value = iodev_read_2(InPort); 59 break; 60 case 32: 61 *Value = iodev_read_4(InPort); 62 break; 63 } 64 65 return (AE_OK); 66 } 67 68 ACPI_STATUS 69 AcpiOsWritePort(ACPI_IO_ADDRESS OutPort, UINT32 Value, UINT32 Width) 70 { 71 72 switch (Width) { 73 case 8: 74 iodev_write_1(OutPort, Value); 75 break; 76 case 16: 77 iodev_write_2(OutPort, Value); 78 break; 79 case 32: 80 iodev_write_4(OutPort, Value); 81 break; 82 } 83 84 return (AE_OK); 85 } 86 87 ACPI_STATUS 88 AcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, UINT64 *Value, 89 UINT32 Width) 90 { 91 92 if (Width == 64) 93 return (AE_SUPPORT); 94 95 if (!pci_cfgregopen()) 96 return (AE_NOT_EXIST); 97 98 *(UINT64 *)Value = pci_cfgregread(PciId->Bus, PciId->Device, 99 PciId->Function, Register, Width / 8); 100 101 return (AE_OK); 102 } 103 104 105 ACPI_STATUS 106 AcpiOsWritePciConfiguration (ACPI_PCI_ID *PciId, UINT32 Register, 107 UINT64 Value, UINT32 Width) 108 { 109 110 if (Width == 64) 111 return (AE_SUPPORT); 112 113 if (!pci_cfgregopen()) 114 return (AE_NOT_EXIST); 115 116 pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register, 117 Value, Width / 8); 118 119 return (AE_OK); 120 } 121