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/* $NetBSD: xhci_acpi.c,v 1.13 2021/08/07 16:19:09 thorpej Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jared McNeill <jmcneill@invisible.ca>.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: xhci_acpi.c,v 1.13 2021/08/07 16:19:09 thorpej Exp $");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/device.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>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpi_intr.h>
#include <dev/acpi/acpi_usb.h>
static const struct device_compatible_entry compat_data[] = {
/* XHCI-compliant USB controller without standard debug */
{ .compat = "PNP0D10" },
/* XHCI-compliant USB controller with standard debug */
{ .compat = "PNP0D15" },
/* DesignWare Dual Role SuperSpeed USB controller */
{ .compat = "808622B7", },
DEVICE_COMPAT_EOL
};
struct xhci_acpi_softc {
struct xhci_softc sc_xhci;
ACPI_HANDLE sc_handle;
};
static int xhci_acpi_match(device_t, cfdata_t, void *);
static void xhci_acpi_attach(device_t, device_t, void *);
static void xhci_acpi_init(struct xhci_softc *);
CFATTACH_DECL2_NEW(xhci_acpi, sizeof(struct xhci_acpi_softc),
xhci_acpi_match, xhci_acpi_attach, NULL,
xhci_activate, NULL, xhci_childdet);
static int
xhci_acpi_match(device_t parent, cfdata_t cf, void *aux)
{
struct acpi_attach_args *aa = aux;
return acpi_compatible_match(aa, compat_data);
}
static void
xhci_acpi_attach(device_t parent, device_t self, void *aux)
{
struct xhci_acpi_softc * const asc = device_private(self);
struct xhci_softc * const sc = &asc->sc_xhci;
struct acpi_attach_args *aa = aux;
struct acpi_resources res;
struct acpi_mem *mem;
struct acpi_irq *irq;
uint32_t hccparams;
ACPI_STATUS rv;
int error;
void *ih;
asc->sc_handle = aa->aa_node->ad_handle;
sc->sc_dev = self;
sc->sc_bus.ub_hcpriv = sc;
sc->sc_bus.ub_revision = USBREV_3_0;
sc->sc_quirks = 0;
sc->sc_vendor_init = xhci_acpi_init;
rv = acpi_resource_parse(sc->sc_dev, asc->sc_handle, "_CRS",
&res, &acpi_resource_parse_ops_default);
if (ACPI_FAILURE(rv))
return;
mem = acpi_res_mem(&res, 0);
if (mem == NULL) {
aprint_error_dev(self, "couldn't find mem resource\n");
goto done;
}
irq = acpi_res_irq(&res, 0);
if (irq == NULL) {
aprint_error_dev(self, "couldn't find irq resource\n");
goto done;
}
sc->sc_ios = mem->ar_length;
sc->sc_iot = aa->aa_memt;
error = bus_space_map(sc->sc_iot, mem->ar_base, mem->ar_length, 0, &sc->sc_ioh);
if (error) {
aprint_error_dev(self, "couldn't map registers\n");
return;
}
hccparams = bus_space_read_4(sc->sc_iot, sc->sc_ioh, XHCI_HCCPARAMS);
if (XHCI_HCC_AC64(hccparams)) {
aprint_verbose_dev(self, "64-bit DMA");
if (BUS_DMA_TAG_VALID(aa->aa_dmat64)) {
aprint_verbose("\n");
sc->sc_bus.ub_dmatag = aa->aa_dmat64;
} else {
aprint_verbose(" - limited\n");
sc->sc_bus.ub_dmatag = aa->aa_dmat;
}
} else {
aprint_verbose_dev(self, "32-bit DMA\n");
sc->sc_bus.ub_dmatag = aa->aa_dmat;
}
ih = acpi_intr_establish(self,
(uint64_t)(uintptr_t)aa->aa_node->ad_handle,
IPL_USB, true, xhci_intr, sc, device_xname(self));
if (ih == NULL) {
aprint_error_dev(self, "couldn't establish interrupt\n");
return;
}
error = xhci_init(sc);
if (error) {
aprint_error_dev(self, "init failed, error = %d\n", error);
return;
}
sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint, CFARGS_NONE);
sc->sc_child2 = config_found(self, &sc->sc_bus2, usbctlprint,
CFARGS_NONE);
done:
acpi_resource_cleanup(&res);
}
static void
xhci_acpi_init(struct xhci_softc *sc)
{
struct xhci_acpi_softc * const asc = (struct xhci_acpi_softc *)sc;
acpi_usb_post_reset(asc->sc_handle);
}
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