617994efc7
drivers, one for fdt, one for acpi. It then uses this to decide if it will use fdt or acpi. The GICv2 (interrupt controller) and Generic Timer drivers have been updated to handle both cases. As this is early code we still need FDT to find the kernel console, and some parts are still missing, including PCI support. Differential Revision: https://reviews.freebsd.org/D2463 Reviewed by: jhb, jkim, emaste Obtained from: ABT Systems Ltd Relnotes: Yes Sponsored by: The FreeBSD Foundation
131 lines
3.3 KiB
C
131 lines
3.3 KiB
C
/*-
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* Copyright (c) 2000, 2001 Michael Smith
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* 6.7 : Hardware Abstraction
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <contrib/dev/acpica/include/acpi.h>
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#include <machine/iodev.h>
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#include <machine/pci_cfgreg.h>
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/*
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* ACPICA's rather gung-ho approach to hardware resource ownership is a little
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* troublesome insofar as there is no easy way for us to know in advance
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* exactly which I/O resources it's going to want to use.
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*
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* In order to deal with this, we ignore resource ownership entirely, and simply
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* use the native I/O space accessor functionality. This is Evil, but it works.
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*/
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ACPI_STATUS
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AcpiOsReadPort(ACPI_IO_ADDRESS InPort, UINT32 *Value, UINT32 Width)
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{
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switch (Width) {
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case 8:
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*Value = iodev_read_1(InPort);
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break;
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case 16:
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*Value = iodev_read_2(InPort);
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break;
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case 32:
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*Value = iodev_read_4(InPort);
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break;
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}
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return (AE_OK);
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}
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ACPI_STATUS
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AcpiOsWritePort(ACPI_IO_ADDRESS OutPort, UINT32 Value, UINT32 Width)
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{
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switch (Width) {
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case 8:
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iodev_write_1(OutPort, Value);
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break;
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case 16:
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iodev_write_2(OutPort, Value);
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break;
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case 32:
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iodev_write_4(OutPort, Value);
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break;
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}
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return (AE_OK);
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}
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ACPI_STATUS
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AcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, UINT64 *Value,
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UINT32 Width)
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{
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#ifdef __aarch64__
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/* ARM64TODO: Add pci support */
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return (AE_SUPPORT);
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#else
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if (Width == 64)
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return (AE_SUPPORT);
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if (!pci_cfgregopen())
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return (AE_NOT_EXIST);
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*(UINT64 *)Value = pci_cfgregread(PciId->Bus, PciId->Device,
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PciId->Function, Register, Width / 8);
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return (AE_OK);
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#endif
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}
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ACPI_STATUS
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AcpiOsWritePciConfiguration (ACPI_PCI_ID *PciId, UINT32 Register,
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UINT64 Value, UINT32 Width)
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{
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#ifdef __aarch64__
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/* ARM64TODO: Add pci support */
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return (AE_SUPPORT);
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#else
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if (Width == 64)
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return (AE_SUPPORT);
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if (!pci_cfgregopen())
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return (AE_NOT_EXIST);
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pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register,
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Value, Width / 8);
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return (AE_OK);
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#endif
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}
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