Move AIC related stuff to own file.

1 files changed, 188 insertions, 0 deletions

diff --git a/sys/arm/at91/at91_aic.c b/sys/arm/at91/at91_aic.c
new file mode 100644
index 0000000..0f1556c
--- /dev/null
+++ b/sys/arm/at91/at91_aic.c
@@ -0,0 +1,188 @@
+/*-
+ * Copyright (c) 2014 Warner Losh.  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 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 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 "opt_platform.h"
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/resource.h>
+#include <sys/systm.h>
+#include <sys/rman.h>
+
+#include <machine/bus.h>
+#include <machine/cpu.h>
+#include <machine/cpufunc.h>
+#include <machine/frame.h>
+#include <machine/intr.h>
+#include <machine/resource.h>
+
+#include <arm/at91/at91var.h>
+#include <arm/at91/at91_aicreg.h>
+
+#ifdef FDT
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#endif
+
+static struct aic_softc {
+	struct resource	*mem_res;	/* Memory resource */
+	void		*intrhand;	/* Interrupt handle */
+	device_t	sc_dev;
+} *sc;
+
+static inline uint32_t
+RD4(struct aic_softc *sc, bus_size_t off)
+{
+
+	return (bus_read_4(sc->mem_res, off));
+}
+
+static inline void
+WR4(struct aic_softc *sc, bus_size_t off, uint32_t val)
+{
+
+	bus_write_4(sc->mem_res, off, val);
+}
+
+void
+arm_mask_irq(uintptr_t nb)
+{
+
+	WR4(sc, IC_IDCR, 1 << nb);
+}
+
+int
+arm_get_next_irq(int last __unused)
+{
+	int status;
+	int irq;
+	
+	irq = RD4(sc, IC_IVR);
+	status = RD4(sc, IC_ISR);
+	if (status == 0) {
+		WR4(sc, IC_EOICR, 1);
+		return (-1);
+	}
+	return (irq);
+}
+
+void
+arm_unmask_irq(uintptr_t nb)
+{
+	
+	WR4(sc, IC_IECR, 1 << nb);
+	WR4(sc, IC_EOICR, 0);
+}
+
+static int
+at91_aic_probe(device_t dev)
+{
+#ifdef FDT
+	if (!ofw_bus_is_compatible(dev, "atmel,at91rm9200-aic"))
+		return (ENXIO);
+#endif
+	device_set_desc(dev, "AIC");
+        return (0);
+}
+
+static int
+at91_aic_attach(device_t dev)
+{
+	int i, rid, err = 0;
+
+	device_printf(dev, "Attach %d\n", bus_current_pass);
+
+	sc = device_get_softc(dev);
+	sc->sc_dev = dev;
+
+	rid = 0;
+	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+	    RF_ACTIVE);
+
+	if (sc->mem_res == NULL)
+		panic("couldn't allocate register resources");
+
+	/*
+	 * Setup the interrupt table.
+	 */
+	if (soc_info.soc_data == NULL || soc_info.soc_data->soc_irq_prio == NULL)
+		panic("Interrupt priority table missing\n");
+	for (i = 0; i < 32; i++) {
+		WR4(sc, IC_SVR + i * 4, i);
+		/* Priority. */
+		WR4(sc, IC_SMR + i * 4, soc_info.soc_data->soc_irq_prio[i]);
+		if (i < 8)
+			WR4(sc, IC_EOICR, 1);
+	}
+
+	WR4(sc, IC_SPU, 32);
+	/* No debug. */
+	WR4(sc, IC_DCR, 0);
+	/* Disable and clear all interrupts. */
+	WR4(sc, IC_IDCR, 0xffffffff);
+	WR4(sc, IC_ICCR, 0xffffffff);
+	enable_interrupts(I32_bit | F32_bit);
+
+	return (err);
+}
+
+static void
+at91_aic_new_pass(device_t dev)
+{
+	device_printf(dev, "Pass %d\n", bus_current_pass);
+}
+
+static device_method_t at91_aic_methods[] = {
+	DEVMETHOD(device_probe, at91_aic_probe),
+	DEVMETHOD(device_attach, at91_aic_attach),
+	DEVMETHOD(bus_new_pass, at91_aic_new_pass),
+	DEVMETHOD_END
+};
+
+static driver_t at91_aic_driver = {
+	"at91_aic",
+	at91_aic_methods,
+	sizeof(struct aic_softc),
+};
+
+static devclass_t at91_aic_devclass;
+
+#ifdef FDT
+DRIVER_MODULE(at91_aic, simplebus, at91_aic_driver, at91_aic_devclass, NULL,
+    NULL);
+#else
+DRIVER_MODULE(at91_aic, atmelarm, at91_aic_driver, at91_aic_devclass, NULL,
+    NULL);
+#endif
+/* not yet
+EARLY_DRIVER_MODULE(at91_aic, simplebus, at91_aic_driver, at91_aic_devclass,
+    NULL, NULL, BUS_PASS_INTERRUPT);
+*/