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93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
/* $NetBSD: a64gic_mainbus.c,v 1.1 2014/08/10 05:47:37 matt Exp $ */
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/*-
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* Copyright (c) 2014 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 Matt Thomas of 3am Software Foundry.
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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 <sys/cdefs.h>
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__KERNEL_RCSID(1, "$NetBSD: a64gic_mainbus.c,v 1.1 2014/08/10 05:47:37 matt Exp $");
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#include "locators.h"
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <sys/device.h>
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#include <sys/intr.h>
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#include <aarch64/locore.h>
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#include <arm/cortex/gic_reg.h>
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#include <arm/cortex/gic_var.h>
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static bool found;
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static int
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a64gic_match(device_t parent, cfdata_t cf, void *aux)
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{
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const struct mainbus_attach_args * const mba = aux;
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if (mba->mba_addr != MAINBUSCF_ADDR_DEFAULT
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|| mba->mba_size != MAINBUSCF_SIZE_DEFAULT
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|| mba->mba_intr != MAINBUSCF_INTR_DEFAULT
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|| mba->mba_intrbase != MAINBUSCF_INTRBASE_DEFAULT
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|| mba->mba_intrbase != 0
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|| mba->mba_package != MAINBUSCF_PACKAGE_DEFAULT)
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return 0;
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return !found;
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}
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static void
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a64gic_attach(device_t parent, device_t self, void *aux)
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{
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const struct mainbus_attach_args * const mba = aux;
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const bus_addr_t cbar = reg_cbar_el1_read();
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prop_dictionary_t dict = device_properties(self);
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bus_space_tag_t memt = mba->mba_memt;
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bus_space_handle_t gicch, gicdh;
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uint32_t gicc_off, gicd_off;
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if (!prop_dictionary_get_uint32(dict, "gicc_offset", &gicc_off))
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panic(": gicc_offset missing");
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if (!prop_dictionary_get_uint32(dict, "gicd_offset", &gicd_off))
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panic(": gicd_offset missing");
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found = 1;
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if (bus_space_map(memt, cbar + gicc_off, 0x1000, 0, &gicch)
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|| bus_space_map(memt, cbar + gicd_off, 0x1000, 0, &gicdh))
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panic(": failed to map GIC registers\n");
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armgic_common_attach(self, memt, gicch, gicdh);
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}
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CFATTACH_DECL_NEW(a64gic, 0, a64gic_match, a64gic_attach, NULL, NULL);
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