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/* $OpenBSD: xhci_acpi.c,v 1.1 2018/07/02 11:23:19 kettenis Exp $ */
/*
* Copyright (c) 2018 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 <sys/device.h>
#include <machine/bus.h>
#include <machine/intr.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/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_mem.h>
#include <dev/usb/xhcireg.h>
#include <dev/usb/xhcivar.h>
struct xhci_acpi_softc {
struct xhci_softc sc;
struct acpi_softc *sc_acpi;
struct aml_node *sc_node;
bus_addr_t sc_addr;
bus_size_t sc_size;
int sc_irq;
int sc_irq_flags;
void *sc_ih;
};
int xhci_acpi_match(struct device *, void *, void *);
void xhci_acpi_attach(struct device *, struct device *, void *);
struct cfattach xhci_acpi_ca = {
sizeof(struct xhci_acpi_softc), xhci_acpi_match, xhci_acpi_attach
};
const char *xhci_hids[] = {
"PNP0D10",
NULL
};
int xhci_acpi_parse_resources(int, union acpi_resource *, void *);
int
xhci_acpi_match(struct device *parent, void *match, void *aux)
{
struct acpi_attach_args *aaa = aux;
struct cfdata *cf = match;
return acpi_matchhids(aaa, xhci_hids, cf->cf_driver->cd_name);
}
void
xhci_acpi_attach(struct device *parent, struct device *self, void *aux)
{
struct xhci_acpi_softc *sc = (struct xhci_acpi_softc *)self;
struct acpi_attach_args *aaa = aux;
struct aml_value res;
int error;
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, xhci_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.iot = aaa->aaa_memt;
sc->sc.sc_size = sc->sc_size;
sc->sc.sc_bus.dmatag = aaa->aaa_dmat;
if (bus_space_map(sc->sc.iot, sc->sc_addr, sc->sc_size, 0,
&sc->sc.ioh)) {
printf(": can't map registers\n");
return;
}
sc->sc_ih = acpi_intr_establish(sc->sc_irq, sc->sc_irq_flags, IPL_USB,
xhci_intr, sc, sc->sc.sc_bus.bdev.dv_xname);
if (sc->sc_ih == NULL) {
printf(": can't establish interrupt\n");
goto unmap;
}
strlcpy(sc->sc.sc_vendor, "Generic", sizeof(sc->sc.sc_vendor));
if ((error = xhci_init(&sc->sc)) != 0) {
printf("%s: init failed, error=%d\n",
sc->sc.sc_bus.bdev.dv_xname, error);
goto disestablish_ret;
}
/* Attach usb device. */
config_found(self, &sc->sc.sc_bus, usbctlprint);
/* Now that the stack is ready, config' the HC and enable interrupts. */
xhci_config(&sc->sc);
return;
disestablish_ret:
#ifdef notyet
acpi_intr_disestablish(sc->sc_ih);
#endif
unmap:
bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
return;
}
int
xhci_acpi_parse_resources(int crsidx, union acpi_resource *crs, void *arg)
{
struct xhci_acpi_softc *sc = arg;
int type = AML_CRSTYPE(crs);
switch (type) {
case LR_MEM32FIXED:
/* XHCI registers are specified by the first resource. */
if (sc->sc_size == 0) {
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;
}
return 0;
}
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