1/*-
2 * Copyright (c) 2012 Olivier Houchard.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include <sys/cdefs.h>
26__FBSDID("$FreeBSD$");
27#include <sys/types.h>
28#include <sys/param.h>
29#include <sys/systm.h>
30#include <sys/bus.h>
31#include <sys/rman.h>
32#include <sys/lock.h>
33#include <sys/mutex.h>
34
35#include <arm/ti/ti_smc.h>
36#include <arm/ti/omap4/omap4_smc.h>
37#include <machine/bus.h>
38#include <machine/pl310.h>
39
40void
41platform_pl310_init(struct pl310_softc *sc)
42{
43	uint32_t aux, prefetch;
44
45	aux = pl310_read4(sc, PL310_AUX_CTRL);
46	prefetch = pl310_read4(sc, PL310_PREFETCH_CTRL);
47
48	/*
49	 * Disable instruction prefetch
50	 */
51	prefetch &= ~PREFETCH_CTRL_INSTR_PREFETCH;
52	aux &= ~AUX_CTRL_INSTR_PREFETCH;
53
54	// prefetch &= ~PREFETCH_CTRL_DATA_PREFETCH;
55	// aux &= ~AUX_CTRL_DATA_PREFETCH;
56
57	/*
58	 * Make sure data prefetch is on
59	 */
60	prefetch |= PREFETCH_CTRL_DATA_PREFETCH;
61	aux |= AUX_CTRL_DATA_PREFETCH;
62
63	/*
64	 * TODO: add tunable for prefetch offset
65	 * and experiment with performance
66	 */
67
68	ti_smc0(aux, 0, WRITE_AUXCTRL_REG);
69	ti_smc0(prefetch, 0, WRITE_PREFETCH_CTRL_REG);
70}
71
72void
73platform_pl310_write_ctrl(struct pl310_softc *sc, uint32_t val)
74{
75	ti_smc0(val, 0, L2CACHE_WRITE_CTRL_REG);
76}
77
78void
79platform_pl310_write_debug(struct pl310_softc *sc, uint32_t val)
80{
81	ti_smc0(val, 0, L2CACHE_WRITE_DEBUG_REG);
82}
83