6965913be9
Add sysmmu to have something that calls through to the combiner's establish routine. Debug the combiner with it. At this point the combiner is mostly done, but the interrupt handler has not been tested. This may never happen as we may never support any of the devices that use the combiner for interrupts. (Or maybe mct)
131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
/* $NetBSD: exynos_sysmmu.c,v 1.1 2016/01/03 04:10:58 marty Exp $ */
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/*-
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* Copyright (c) 2015 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Marty Fouts
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_exynos.h"
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#include "opt_arm_debug.h"
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#include "gpio.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(1, "$NetBSD: exynos_sysmmu.c,v 1.1 2016/01/03 04:10:58 marty Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/device.h>
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#include <sys/intr.h>
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#include <sys/systm.h>
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#include <sys/kmem.h>
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#include <sys/gpio.h>
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#include <dev/gpio/gpiovar.h>
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#include <arm/samsung/exynos_reg.h>
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#include <arm/samsung/exynos_intr.h>
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#include <dev/fdt/fdtvar.h>
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struct exynos_sysmmu_softc {
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device_t sc_dev;
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bus_space_tag_t sc_bst;
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bus_space_handle_t sc_bsh;
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void * sc_ih;
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};
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static int exynos_sysmmu_match(device_t, cfdata_t, void *);
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static void exynos_sysmmu_attach(device_t, device_t, void *);
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static int exynos_sysmmu_intr(void *);
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CFATTACH_DECL_NEW(exynos_sysmmu, sizeof(struct exynos_sysmmu_softc),
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exynos_sysmmu_match, exynos_sysmmu_attach, NULL, NULL);
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static int
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exynos_sysmmu_match(device_t parent, cfdata_t cf, void *aux)
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{
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const char * const compatible[] = { "samsung,exynos-sysmmu",
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NULL };
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struct fdt_attach_args * const faa = aux;
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return of_match_compatible(faa->faa_phandle, compatible);
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}
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static void
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exynos_sysmmu_attach(device_t parent, device_t self, void *aux)
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{
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struct exynos_sysmmu_softc * const sc
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= kmem_zalloc(sizeof(*sc), KM_SLEEP);
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struct fdt_attach_args * const faa = aux;
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char intrstr[128];
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bus_addr_t addr;
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bus_size_t size;
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int error;
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if (fdtbus_get_reg(faa->faa_phandle, 0, &addr, &size) != 0) {
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aprint_error(": couldn't get registers\n");
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return;
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}
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sc->sc_dev = self;
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sc->sc_bst = faa->faa_bst;
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error = bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh);
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if (error) {
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aprint_error(": couldn't map %#llx: %d",
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(uint64_t)addr, error);
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return;
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}
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if (!fdtbus_intr_str(faa->faa_phandle, 0, intrstr, sizeof(intrstr))) {
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aprint_error_dev(self, "failed to decode interrupt\n");
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return;
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}
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sc->sc_ih = fdtbus_intr_establish(faa->faa_phandle, 0, IPL_VM,
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FDT_INTR_MPSAFE, exynos_sysmmu_intr, sc);
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if (sc->sc_ih == NULL) {
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aprint_error_dev(self, "couldn't establish interrupt on %s\n",
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intrstr);
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return;
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}
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aprint_normal_dev(self, "interrupting on %s\n", intrstr);
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aprint_normal(" @ 0x%08x: SYSMMU - NOT IMPLEMENTED", (uint)addr);
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aprint_naive("\n");
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aprint_normal("\n");
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}
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static int
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exynos_sysmmu_intr(void *priv)
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{
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printf("%s: Unexpected interrupt\n", __func__);
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return 0;
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}
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