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Fix completion descriptors alignment for the ENA
[FreeBSD/FreeBSD.git] / sys / arm / mv / armada38x / armada38x_pl310.c
1 /*-
2  * Copyright (c) 2017 Stormshield.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
28
29 /*
30  * The machine-dependent part of the arm/pl310 driver for Armada 38x SoCs.
31  */
32
33 #include <sys/types.h>
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/bus.h>
37 #include <sys/rman.h>
38 #include <sys/lock.h>
39 #include <sys/mutex.h>
40
41 #include <machine/bus.h>
42 #include <machine/pl310.h>
43 #include <machine/platform.h>
44 #include <machine/platformvar.h>
45
46 #include "armada38x_pl310.h"
47 #include "platform_pl310_if.h"
48
49 void
50 mv_a38x_platform_pl310_init(platform_t plat, struct pl310_softc *sc)
51 {
52         uint32_t reg;
53
54         /*
55          * Enable power saving modes:
56          *  - Dynamic Gating stops the clock when the controller is idle.
57          */
58         reg = pl310_read4(sc, PL310_POWER_CTRL);
59         reg |= POWER_CTRL_ENABLE_GATING;
60         pl310_write4(sc, PL310_POWER_CTRL, reg);
61
62         pl310_write4(sc, PL310_PREFETCH_CTRL, PREFETCH_CTRL_DL |
63             PREFETCH_CTRL_DATA_PREFETCH | PREFETCH_CTRL_INCR_DL |
64             PREFETCH_CTRL_DL_ON_WRAP);
65
66         /* Disable L2 cache sync for IO coherent operation */
67         sc->sc_io_coherent = true;
68 }
69
70 void
71 mv_a38x_platform_pl310_write_ctrl(platform_t plat, struct pl310_softc *sc, uint32_t val)
72 {
73
74         pl310_write4(sc, PL310_CTRL, val);
75 }
76
77 void
78 mv_a38x_platform_pl310_write_debug(platform_t plat, struct pl310_softc *sc, uint32_t val)
79 {
80
81         pl310_write4(sc, PL310_DEBUG_CTRL, val);
82 }