1/* $OpenBSD: loongson2.h,v 1.4 2013/01/16 20:28:06 miod Exp $ */
2
3/*
4 * Copyright (c) 2009 Miodrag Vallat.
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#ifndef _MIPS64_LOONGSON2_H_
20#define _MIPS64_LOONGSON2_H_
21
22/*
23 * Loongson 2E/2F specific defines
24 */
25
26/*
27 * Address Window registers physical addresses
28 *
29 * The Loongson 2F processor has an AXI crossbar with four possible bus
30 * masters, each one having four programmable address windows.
31 *
32 * Each window is defined with three 64-bit registers:
33 * - a base address register, defining the address in the master address
34 * space (base register).
35 * - an address mask register, defining which address bits are valid in this
36 * window. A given address matches a window if (addr & mask) == base.
37 * - the location of the window base in the target, as well at the target
38 * number itself (mmap register). The lower 20 bits of the address are
39 * forced as zeroes regardless of their value in this register.
40 * The translated address is thus (addr & ~mask) | (mmap & ~0xfffff).
41 */
42
43#define LOONGSON_AWR_BASE_ADDRESS 0x3ff00000
44
45#define LOONGSON_AWR_BASE(master, window) \
46 (LOONGSON_AWR_BASE_ADDRESS + (window) * 0x08 + (master) * 0x60 + 0x00)
47#define LOONGSON_AWR_SIZE(master, window) \
48 (LOONGSON_AWR_BASE_ADDRESS + (window) * 0x08 + (master) * 0x60 + 0x20)
49#define LOONGSON_AWR_MMAP(master, window) \
50 (LOONGSON_AWR_BASE_ADDRESS + (window) * 0x08 + (master) * 0x60 + 0x40)
51
52/*
53 * Bits in the diagnostic register
54 */
55
56#define COP_0_DIAG_ITLB_CLEAR 0x04
57#define COP_0_DIAG_BTB_CLEAR 0x02
58#define COP_0_DIAG_RAS_DISABLE 0x01
59
60#if defined(_KERNEL) && !defined(_LOCORE)
61int loongson2f_cpuspeed(int *);
62void loongson2f_setperf(int);
63#endif
64
65#endif /* _MIPS64_LOONGSON2_H_ */