gtmr_fdt.c revision 1.1 
1/* $NetBSD: gtmr_fdt.c,v 1.1 2017/05/28 00:40:20 jmcneill Exp $ */
2
3/*-
4 * Copyright (c) 2017 Jared McNeill <jmcneill@invisible.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: gtmr_fdt.c,v 1.1 2017/05/28 00:40:20 jmcneill Exp $");
31
32#include <sys/param.h>
33#include <sys/bus.h>
34#include <sys/device.h>
35#include <sys/intr.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/kmem.h>
39
40#include <arm/cortex/gic_intr.h>
41#include <arm/cortex/mpcore_var.h>
42
43#include <dev/fdt/fdtvar.h>
44
45static int	gtmr_fdt_match(device_t, cfdata_t, void *);
46static void	gtmr_fdt_attach(device_t, device_t, void *);
47
48CFATTACH_DECL_NEW(gtmr_fdt, 0, gtmr_fdt_match, gtmr_fdt_attach, NULL, NULL);
49
50static int
51gtmr_fdt_match(device_t parent, cfdata_t cf, void *aux)
52{
53	const char * const compatible[] = {
54		"arm,armv7-timer",
55		NULL
56	};
57	struct fdt_attach_args * const faa = aux;
58
59	return of_compatible(faa->faa_phandle, compatible) >= 0;
60}
61
62static void
63gtmr_fdt_attach(device_t parent, device_t self, void *aux)
64{
65	aprint_naive("\n");
66	aprint_normal(": Generic Timer\n");
67
68	struct mpcore_attach_args mpcaa = {
69		.mpcaa_name = "armgtmr",
70		.mpcaa_irq = IRQ_GTMR_PPI_VTIMER
71	};
72
73	config_found(self, &mpcaa, NULL);
74}
75