l2cc_fdt.c revision 1.1 
1/*	$NetBSD: l2cc_fdt.c,v 1.1 2018/06/20 08:03:55 hkenken Exp $	*/
2/*
3 * Copyright (c) 2018  Genetec Corporation.  All rights reserved.
4 * Written by Hashimoto Kenichi for Genetec Corporation.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: l2cc_fdt.c,v 1.1 2018/06/20 08:03:55 hkenken Exp $");
30
31#include <sys/param.h>
32#include <sys/bus.h>
33#include <sys/device.h>
34#include <sys/intr.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/kmem.h>
38
39#include <arm/cortex/mpcore_var.h>
40
41#include <dev/fdt/fdtvar.h>
42#include <arm/fdt/arm_fdtvar.h>
43
44static int l2cc_fdt_match(device_t, cfdata_t, void *);
45static void l2cc_fdt_attach(device_t, device_t, void *);
46
47CFATTACH_DECL_NEW(l2cc_fdt, 0, l2cc_fdt_match, l2cc_fdt_attach, NULL, NULL);
48
49static int
50l2cc_fdt_match(device_t parent, cfdata_t cf, void *aux)
51{
52	const char * const compatible[] = {
53		"arm,pl310-cache",
54		NULL
55	};
56	struct fdt_attach_args * const faa = aux;
57
58	return of_compatible(faa->faa_phandle, compatible) >= 0;
59}
60
61static void
62l2cc_fdt_attach(device_t parent, device_t self, void *aux)
63{
64	struct fdt_attach_args * const faa = aux;
65	const int phandle = faa->faa_phandle;
66	bus_space_handle_t bsh;
67
68	bus_addr_t addr;
69	bus_size_t size;
70	if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
71		aprint_error(": couldn't get distributor address\n");
72		return;
73	}
74	if (bus_space_map(faa->faa_bst, addr, size, 0, &bsh)) {
75		aprint_error(": couldn't map registers\n");
76		return;
77	}
78
79	struct mpcore_attach_args mpcaa = {
80		.mpcaa_name = "arml2cc",
81		.mpcaa_memt = faa->faa_bst,
82		.mpcaa_memh = bsh,
83		.mpcaa_off1 = 0,
84		.mpcaa_off2 = 0,
85	};
86
87	config_found(self, &mpcaa, NULL);
88}
89