diff options
Diffstat (limited to 'sys/dev/acpica/acpi_package.c')
| -rw-r--r-- | sys/dev/acpica/acpi_package.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/sys/dev/acpica/acpi_package.c b/sys/dev/acpica/acpi_package.c new file mode 100644 index 0000000..d1d1448 --- /dev/null +++ b/sys/dev/acpica/acpi_package.c @@ -0,0 +1,141 @@ +/*- + * Copyright (c) 2003 Nate Lawson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/bus.h> +#include <sys/sbuf.h> + +#include <machine/bus_pio.h> +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include "acpi.h" +#include <dev/acpica/acpivar.h> + +/* + * Package manipulation convenience functions + */ + +int +acpi_PkgInt(device_t dev, ACPI_OBJECT *res, int idx, ACPI_INTEGER *dst) +{ + ACPI_OBJECT *obj; + + obj = &res->Package.Elements[idx]; + if (obj == NULL || obj->Type != ACPI_TYPE_INTEGER) { + ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), + "PkgInt error, pkg[%d] at %d %p\n", + res->Package.Count, idx, obj); + return (-1); + } + + *dst = obj->Integer.Value; + return (0); +} + +int +acpi_PkgInt32(device_t dev, ACPI_OBJECT *res, int idx, uint32_t *dst) +{ + ACPI_INTEGER tmp; + int error; + + error = acpi_PkgInt(dev, res, idx, &tmp); + if (error == 0) + *dst = (uint32_t)tmp; + return (error); +} + +int +acpi_PkgStr(device_t dev, ACPI_OBJECT *res, int idx, void *dst, size_t size) +{ + ACPI_OBJECT *obj; + void *ptr; + size_t length; + + obj = &res->Package.Elements[idx]; + if (obj == NULL) { + ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), + "PkgStr NULL object at %d\n", idx); + return (-1); + } + bzero(dst, sizeof(dst)); + + switch (obj->Type) { + case ACPI_TYPE_STRING: + ptr = obj->String.Pointer; + length = obj->String.Length; + break; + case ACPI_TYPE_BUFFER: + ptr = obj->Buffer.Pointer; + length = obj->Buffer.Length; + break; + default: + ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), + "PkgStr: invalid object type %d at %d\n", obj->Type, idx); + return (-1); + } + + /* Make sure string will fit, including terminating NUL */ + if (++length > size) { + ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), + "PkgStr string too long (%zu bytes) at %d\n", length, idx); + return (-1); + } + + strlcpy(dst, ptr, length); + return (0); +} + +int +acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *rid, + struct resource **dst) +{ + ACPI_GENERIC_ADDRESS gas; + ACPI_OBJECT *obj; + + obj = &res->Package.Elements[idx]; + if (obj == NULL || obj->Type != ACPI_TYPE_BUFFER || + obj->Buffer.Length < sizeof(ACPI_GENERIC_ADDRESS) + 3) { + + ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), + "PkgGas error at %d\n", idx); + return (-1); + } + + memcpy(&gas, obj->Buffer.Pointer + 3, sizeof(gas)); + *dst = acpi_bus_alloc_gas(dev, rid, &gas); + if (*dst == NULL) { + ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), + "PkgGas error at %d\n", idx); + return (-1); + } + + return (0); +} |
