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/* $OpenBSD: ccp_acpi.c,v 1.1 2019/04/23 18:34:06 kettenis Exp $ */
/*
* Copyright (c) 2019 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpidev.h>
#include <dev/acpi/amltypes.h>
#include <dev/acpi/dsdt.h>
#include <dev/ic/ccpvar.h>
struct ccp_acpi_softc {
struct ccp_softc sc;
struct acpi_softc *sc_acpi;
struct aml_node *sc_node;
bus_addr_t sc_addr;
bus_size_t sc_size;
};
int ccp_acpi_match(struct device *, void *, void *);
void ccp_acpi_attach(struct device *, struct device *, void *);
struct cfattach ccp_acpi_ca = {
sizeof(struct ccp_acpi_softc), ccp_acpi_match, ccp_acpi_attach
};
const char *ccp_hids[] = {
"AMDI0C00",
NULL
};
int ccp_acpi_parse_resources(int, union acpi_resource *, void *);
int
ccp_acpi_match(struct device *parent, void *match, void *aux)
{
struct acpi_attach_args *aaa = aux;
struct cfdata *cf = match;
return acpi_matchhids(aaa, ccp_hids, cf->cf_driver->cd_name);
}
void
ccp_acpi_attach(struct device *parent, struct device *self, void *aux)
{
struct acpi_attach_args *aaa = aux;
struct ccp_acpi_softc *sc = (struct ccp_acpi_softc *)self;
struct aml_value res;
sc->sc_acpi = (struct acpi_softc *)parent;
sc->sc_node = aaa->aaa_node;
printf(" %s", sc->sc_node->name);
if (aml_evalname(sc->sc_acpi, sc->sc_node, "_CRS", 0, NULL, &res)) {
printf(": can't find registers\n");
return;
}
aml_parse_resource(&res, ccp_acpi_parse_resources, sc);
printf(" addr 0x%lx/0x%lx", sc->sc_addr, sc->sc_size);
if (sc->sc_addr == 0 || sc->sc_size == 0) {
printf("\n");
return;
}
sc->sc.sc_iot = aaa->aaa_memt;
if (bus_space_map(sc->sc.sc_iot, sc->sc_addr, sc->sc_size, 0,
&sc->sc.sc_ioh)) {
printf(": can't map registers\n");
return;
}
ccp_attach(&sc->sc);
}
int
ccp_acpi_parse_resources(int crsidx, union acpi_resource *crs, void *arg)
{
struct ccp_acpi_softc *sc = arg;
int type = AML_CRSTYPE(crs);
switch (type) {
case LR_MEM32FIXED:
sc->sc_addr = crs->lr_m32fixed._bas;
sc->sc_size = crs->lr_m32fixed._len;
break;
}
return 0;
}
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