1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2012 Olivier Houchard.  All rights reserved.
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 THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29#include <sys/types.h>
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/bus.h>
33#include <sys/rman.h>
34#include <sys/lock.h>
35#include <sys/mutex.h>
36
37#include <machine/bus.h>
38#include <machine/pl310.h>
39#include <machine/platformvar.h>
40
41#include <arm/ti/ti_smc.h>
42#include <arm/ti/omap4/omap4_machdep.h>
43#include <arm/ti/omap4/omap4_smc.h>
44
45#include "platform_pl310_if.h"
46
47void
48omap4_pl310_init(platform_t plat, struct pl310_softc *sc)
49{
50	uint32_t aux, prefetch;
51
52	aux = pl310_read4(sc, PL310_AUX_CTRL);
53	prefetch = pl310_read4(sc, PL310_PREFETCH_CTRL);
54
55	/*
56	 * Disable instruction prefetch
57	 */
58	prefetch &= ~PREFETCH_CTRL_INSTR_PREFETCH;
59	aux &= ~AUX_CTRL_INSTR_PREFETCH;
60
61	// prefetch &= ~PREFETCH_CTRL_DATA_PREFETCH;
62	// aux &= ~AUX_CTRL_DATA_PREFETCH;
63
64	/*
65	 * Make sure data prefetch is on
66	 */
67	prefetch |= PREFETCH_CTRL_DATA_PREFETCH;
68	aux |= AUX_CTRL_DATA_PREFETCH;
69
70	/*
71	 * TODO: add tunable for prefetch offset
72	 * and experiment with performance
73	 */
74
75	ti_smc0(aux, 0, WRITE_AUXCTRL_REG);
76	ti_smc0(prefetch, 0, WRITE_PREFETCH_CTRL_REG);
77}
78
79void
80omap4_pl310_write_ctrl(platform_t plat, struct pl310_softc *sc, uint32_t val)
81{
82
83	ti_smc0(val, 0, L2CACHE_WRITE_CTRL_REG);
84}
85
86void
87omap4_pl310_write_debug(platform_t plat, struct pl310_softc *sc, uint32_t val)
88{
89
90	ti_smc0(val, 0, L2CACHE_WRITE_DEBUG_REG);
91}
92