1 files changed, 96 insertions, 0 deletions

diff --git a/sys/dev/mmc/host/dwmmc_hisi.c b/sys/dev/mmc/host/dwmmc_hisi.c
new file mode 100644
index 000000000000..e39fa8f3aa5c
--- /dev/null
+++ b/sys/dev/mmc/host/dwmmc_hisi.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2015 Andrew Turner.
+ * All rights reserved.
+ *
+ * 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 AUTHOR 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 AUTHOR 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>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/module.h>
+
+#include <machine/bus.h>
+
+#include <dev/mmc/bridge.h>
+
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dev/mmc/host/dwmmc_var.h>
+
+static device_probe_t hisi_dwmmc_probe;
+static device_attach_t hisi_dwmmc_attach;
+
+static int
+hisi_dwmmc_probe(device_t dev)
+{
+
+	if (!ofw_bus_status_okay(dev))
+		return (ENXIO);
+
+	if (!ofw_bus_is_compatible(dev, "hisilicon,hi6220-dw-mshc"))
+		return (ENXIO);
+
+	device_set_desc(dev, "Synopsys DesignWare Mobile "
+	    "Storage Host Controller (HiSilicon)");
+
+	return (BUS_PROBE_VENDOR);
+}
+
+static int
+hisi_dwmmc_attach(device_t dev)
+{
+	struct dwmmc_softc *sc;
+
+	sc = device_get_softc(dev);
+	sc->hwtype = HWTYPE_HISILICON;
+	/* TODO: Calculate this from a clock driver */
+	sc->bus_hz = 24000000; /* 24MHz */
+
+	/*
+	 * ARM64TODO: This is likely because we lack support for
+	 * DMA when the controller is not cache-coherent on arm64.
+	 */
+	sc->use_pio = 1;
+	sc->desc_count = 1;
+
+	return (dwmmc_attach(dev));
+}
+
+static device_method_t hisi_dwmmc_methods[] = {
+	/* bus interface */
+	DEVMETHOD(device_probe, hisi_dwmmc_probe),
+	DEVMETHOD(device_attach, hisi_dwmmc_attach),
+
+	DEVMETHOD_END
+};
+
+static devclass_t hisi_dwmmc_devclass;
+
+DEFINE_CLASS_1(hisi_dwmmc, hisi_dwmmc_driver, hisi_dwmmc_methods,
+    sizeof(struct dwmmc_softc), dwmmc_driver);
+DRIVER_MODULE(hisi_dwmmc, simplebus, hisi_dwmmc_driver,
+    hisi_dwmmc_devclass, 0, 0);