add support for ohci, as found on the pine64

this currently relies on the usbphy code in the ehci fdt glue to
work, but this is a work in progress. there's an extra printf of
fdt in the dmesg to make the ohci checkrev code not look terrible.

ok kettenis@

2 files changed, 203 insertions, 1 deletions

diff --git a/sys/dev/fdt/files.fdt b/sys/dev/fdt/files.fdt
index 5276439c306..6092bd64396 100644
--- a/sys/dev/fdt/files.fdt
+++ b/sys/dev/fdt/files.fdt
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.fdt,v 1.74 2018/08/27 21:09:47 kettenis Exp $
+#	$OpenBSD: files.fdt,v 1.75 2019/01/04 23:55:29 dlg Exp $
 #
 # Config file and device description for machine-independent FDT code.
 # Included by ports that need it.
@@ -109,6 +109,9 @@ file	dev/fdt/if_dwge_fdt.c		dwge_fdt
 attach	ehci at fdt with ehci_fdt
 file	dev/fdt/ehci_fdt.c		ehci_fdt
 
+attach	ohci at fdt with ohci_fdt
+file	dev/fdt/ohci_fdt.c		ohci_fdt
+
 attach	sdhc at fdt with sdhc_fdt
 file	dev/fdt/sdhc_fdt.c		sdhc_fdt
 
diff --git a/sys/dev/fdt/ohci_fdt.c b/sys/dev/fdt/ohci_fdt.c
new file mode 100644
index 00000000000..12550f199f4
--- /dev/null
+++ b/sys/dev/fdt/ohci_fdt.c
@@ -0,0 +1,199 @@
+/*	$OpenBSD: ohci_fdt.c,v 1.1 2019/01/04 23:55:29 dlg Exp $ */
+
+/*
+ * Copyright (c) 2005, 2019 David Gwynne <dlg@openbsd.org>
+ * Copyright (c) 2017 Mark Kettenis <kettenis@openbsd.org>
+ *
+ * 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/types.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+
+#include <machine/intr.h>
+#include <machine/bus.h>
+#include <machine/fdt.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_clock.h>
+#include <dev/ofw/ofw_pinctrl.h>
+#include <dev/ofw/ofw_regulator.h>
+#include <dev/ofw/fdt.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/ohcireg.h>
+#include <dev/usb/ohcivar.h>
+
+struct ohci_fdt_softc {
+	struct ohci_softc	sc;
+	int			sc_node;
+	void			*sc_ih;
+};
+
+int	ohci_fdt_match(struct device *, void *, void *);
+void	ohci_fdt_attach(struct device *, struct device *, void *);
+int	ohci_fdt_detach(struct device *, int);
+
+struct cfattach ohci_fdt_ca = {
+	sizeof(struct ohci_fdt_softc),
+	ohci_fdt_match,
+	ohci_fdt_attach,
+	ohci_fdt_detach,
+	ohci_activate
+};
+
+void	ohci_fdt_attach_deferred(struct device *);
+
+int
+ohci_fdt_match(struct device *parent, void *match, void *aux)
+{
+	struct fdt_attach_args *faa = aux;
+
+	return OF_is_compatible(faa->fa_node, "generic-ohci");
+}
+
+void
+ohci_fdt_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct ohci_fdt_softc *sc = (struct ohci_fdt_softc *)self;
+	struct fdt_attach_args *faa = aux;
+	char *devname = sc->sc.sc_bus.bdev.dv_xname;
+
+	if (faa->fa_nreg < 1) {
+		printf(": no registers\n");
+		return;
+	}
+
+	sc->sc_node = faa->fa_node;
+	sc->sc.iot = faa->fa_iot;
+	sc->sc.sc_bus.dmatag = faa->fa_dmat;
+	sc->sc.sc_size = faa->fa_reg[0].size;
+
+	if (bus_space_map(sc->sc.iot, faa->fa_reg[0].addr,
+	    faa->fa_reg[0].size, 0, &sc->sc.ioh)) {
+		printf(": can't map registers\n");
+		goto out;
+	}
+
+	pinctrl_byname(sc->sc_node, "default");
+
+	clock_enable_all(sc->sc_node);
+	reset_deassert_all(sc->sc_node);
+
+	/* Record what interrupts were enabled by SMM/BIOS. */
+	sc->sc.sc_intre = bus_space_read_4(sc->sc.iot, sc->sc.ioh,
+	    OHCI_INTERRUPT_ENABLE);
+
+	/* Disable interrupts, so we don't get any spurious ones. */
+	bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
+	    OHCI_MIE);
+
+	bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
+	    BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
+	bus_space_write_4(sc->sc.iot, sc->sc.ioh,
+	    OHCI_INTERRUPT_DISABLE, OHCI_MIE);
+
+	/* Map and establish the interrupt. */
+	splassert(IPL_USB);
+	sc->sc_ih = fdt_intr_establish(faa->fa_node, IPL_USB,
+	    ohci_intr, &sc->sc, devname);
+	if (sc->sc_ih == NULL) {
+		printf(": can't establish interrupt\n");
+		goto disable_clocks;
+	}
+	printf(": fdt");
+
+	strlcpy(sc->sc.sc_vendor, "Generic", sizeof(sc->sc.sc_vendor));
+
+	/* Display revision. Legacy handover isn't needed as there's no smm */
+	if (ohci_checkrev(&sc->sc) != USBD_NORMAL_COMPLETION) {
+		goto disestablish_intr;
+	}
+
+	/* Ignore interrupts for now */
+	sc->sc.sc_bus.dying = 1;
+
+	config_defer(self, ohci_fdt_attach_deferred);
+
+	return;
+
+disestablish_intr:
+	fdt_intr_disestablish(sc->sc_ih);
+	sc->sc_ih = NULL;
+disable_clocks:
+	clock_disable_all(sc->sc_node);
+
+	bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
+	sc->sc.sc_size = 0;
+out:
+	return;
+}
+
+void
+ohci_fdt_attach_deferred(struct device *self)
+{
+	struct ohci_fdt_softc *sc = (struct ohci_fdt_softc *)self;
+	usbd_status r;
+	int s;
+
+	s = splusb();
+
+	sc->sc.sc_bus.dying = 0;
+
+	r = ohci_init(&sc->sc);
+
+	splx(s);
+	if (r != USBD_NORMAL_COMPLETION) {
+		printf("%s: init failed, error=%d\n",
+		    sc->sc.sc_bus.bdev.dv_xname, r);
+		fdt_intr_disestablish(sc->sc_ih);
+		sc->sc_ih = NULL;
+		clock_disable_all(sc->sc_node);
+		bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
+		sc->sc.sc_size = 0;
+		return;
+	}
+
+	/* Attach usb device. */
+	config_found(self, &sc->sc.sc_bus, usbctlprint);
+}
+
+int
+ohci_fdt_detach(struct device *self, int flags)
+{
+	struct ohci_fdt_softc *sc = (struct ohci_fdt_softc *)self;
+	int rv;
+
+	rv = ohci_detach(self, flags);
+	if (rv)
+		return rv;
+
+	if (sc->sc_ih != NULL) {
+		fdt_intr_disestablish(sc->sc_ih);
+		sc->sc_ih = NULL;
+	}
+
+	if (sc->sc.sc_size) {
+		bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
+		sc->sc.sc_size = 0;
+	}
+
+	clock_disable_all(sc->sc_node);
+	return 0;
+}