Totally straightforward.
ok?
Index: arch/arm64/conf/GENERIC
===================================================================
RCS file: /cvs/src/sys/arch/arm64/conf/GENERIC,v
retrieving revision 1.74
diff -u -p -r1.74 GENERIC
--- arch/arm64/conf/GENERIC 1 Jul 2018 19:30:37 -0000 1.74
+++ arch/arm64/conf/GENERIC 2 Jul 2018 09:35:47 -0000
@@ -42,6 +42,7 @@ acpibtn* at acpi?
acpiec* at acpi?
ahci* at acpi?
com* at acpi?
+xhci* at acpi?
simplebus* at fdt?
scsibus* at scsi?
Index: arch/arm64/conf/RAMDISK
===================================================================
RCS file: /cvs/src/sys/arch/arm64/conf/RAMDISK,v
retrieving revision 1.61
diff -u -p -r1.61 RAMDISK
--- arch/arm64/conf/RAMDISK 1 Jul 2018 19:30:37 -0000 1.61
+++ arch/arm64/conf/RAMDISK 2 Jul 2018 09:35:47 -0000
@@ -52,6 +52,7 @@ acpi0 at mainbus?
acpiec* at acpi?
ahci* at acpi?
com* at acpi?
+xhci* at acpi?
simplebus* at fdt?
scsibus* at scsi?
Index: dev/acpi/files.acpi
===================================================================
RCS file: /cvs/src/sys/dev/acpi/files.acpi,v
retrieving revision 1.47
diff -u -p -r1.47 files.acpi
--- dev/acpi/files.acpi 1 Jul 2018 15:54:59 -0000 1.47
+++ dev/acpi/files.acpi 2 Jul 2018 09:35:48 -0000
@@ -148,6 +148,10 @@ file dev/acpi/com_acpi.c com_acpi
attach sdhc at acpi with sdhc_acpi
file dev/acpi/sdhc_acpi.c sdhc_acpi
+# XHCI
+attach xhci at acpi with xhci_acpi
+file dev/acpi/xhci_acpi.c xhci_acpi
+
# Synopsys DesignWare I2C controller
attach dwiic at acpi with dwiic_acpi
file dev/acpi/dwiic_acpi.c dwiic_acpi
Index: dev/acpi/xhci_acpi.c
===================================================================
RCS file: dev/acpi/xhci_acpi.c
diff -N dev/acpi/xhci_acpi.c
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ dev/acpi/xhci_acpi.c 2 Jul 2018 09:35:48 -0000
@@ -0,0 +1,163 @@
+/* $OpenBSD$ */
+/*
+ * 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;
+}
