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/* $OpenBSD: sdhc_acpi.c,v 1.1 2016/01/11 07:36:10 kettenis Exp $ */
/*
* Copyright (c) 2016 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/malloc.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>
#undef DEVNAME
#include <dev/sdmmc/sdhcreg.h>
#include <dev/sdmmc/sdhcvar.h>
#include <dev/sdmmc/sdmmcvar.h>
struct sdhc_acpi_softc {
struct sdhc_softc sc;
struct acpi_softc *sc_acpi;
struct aml_node *sc_node;
bus_space_tag_t sc_memt;
bus_space_handle_t sc_memh;
bus_addr_t sc_addr;
bus_size_t sc_size;
int sc_irq;
int sc_irq_flags;
void *sc_ih;
struct sdhc_host *sc_host;
};
int sdhc_acpi_match(struct device *, void *, void *);
void sdhc_acpi_attach(struct device *, struct device *, void *);
struct cfattach sdhc_acpi_ca = {
sizeof(struct sdhc_acpi_softc), sdhc_acpi_match, sdhc_acpi_attach
};
const char *sdhc_hids[] = {
"PNP0D40",
"INT33BB",
"80860F14",
"PNP0FFF",
0
};
int sdhc_acpi_parse_resources(union acpi_resource *, void *);
int
sdhc_acpi_match(struct device *parent, void *match, void *aux)
{
struct acpi_attach_args *aaa = aux;
struct cfdata *cf = match;
int64_t sta;
if (!acpi_matchhids(aaa, sdhc_hids, cf->cf_driver->cd_name))
return 0;
if (aml_evalinteger((struct acpi_softc *)parent, aaa->aaa_node,
"_STA", 0, NULL, &sta))
sta = STA_PRESENT | STA_ENABLED | STA_DEV_OK | 0x1000;
if ((sta & STA_PRESENT) == 0)
return 0;
return 1;
}
void
sdhc_acpi_attach(struct device *parent, struct device *self, void *aux)
{
struct acpi_attach_args *aaa = aux;
struct sdhc_acpi_softc *sc = (struct sdhc_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, sdhc_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;
}
printf(" irq %d", sc->sc_irq);
sc->sc_memt = aaa->aaa_memt;
if (bus_space_map(sc->sc_memt, sc->sc_addr, sc->sc_size, 0,
&sc->sc_memh)) {
printf(", can't map registers\n");
return;
}
sc->sc_ih = acpi_intr_establish(sc->sc_irq, sc->sc_irq_flags, IPL_BIO,
sdhc_intr, sc, sc->sc.sc_dev.dv_xname);
if (sc->sc_ih == NULL) {
printf(", can't establish interrupt\n");
return;
}
printf("\n");
sc->sc.sc_host = &sc->sc_host;
sdhc_host_found(&sc->sc, sc->sc_memt, sc->sc_memh, sc->sc_size, 0, 0);
}
int
sdhc_acpi_parse_resources(union acpi_resource *crs, void *arg)
{
struct sdhc_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;
case LR_EXTIRQ:
sc->sc_irq = crs->lr_extirq.irq[0];
sc->sc_irq_flags = crs->lr_extirq.flags;
break;
case 0x8c:
/* XXX GPIO; use for card detect. */
break;
default:
printf(" type 0x%x\n", type);
break;
}
return 0;
}
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