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/* $OpenBSD: loongson2.h,v 1.2 2010/01/28 21:24:08 miod Exp $ */
/*
* Copyright (c) 2009 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _MACHINE_LOONGSON2_H_
#define _MACHINE_LOONGSON2_H_
/*
* Loongson 2E/2F specific defines
*/
/*
* Address Window registers physical addresses
*
* The Loongson 2F processor has an AXI crossbar with four possible bus
* masters, each one having four programmable address windows.
*
* Each window is defined with three 64-bit registers:
* - a base address register, defining the address in the master address
* space (base register).
* - an address mask register, defining which address bits are valid in this
* window. A given address matches a window if (addr & mask) == base.
* - the location of the window base in the target, as well at the target
* number itself (mmap register). The lower 20 bits of the address are
* forced as zeroes regardless of their value in this register.
* The translated address is thus (addr & ~mask) | (mmap & ~0xfffff).
*/
#define LOONGSON_AWR_BASE_ADDRESS 0x3ff00000
#define LOONGSON_AWR_BASE(master, window) \
(LOONGSON_AWR_BASE_ADDRESS + (window) * 0x08 + (master) * 0x60 + 0x00)
#define LOONGSON_AWR_SIZE(master, window) \
(LOONGSON_AWR_BASE_ADDRESS + (window) * 0x08 + (master) * 0x60 + 0x20)
#define LOONGSON_AWR_MMAP(master, window) \
(LOONGSON_AWR_BASE_ADDRESS + (window) * 0x08 + (master) * 0x60 + 0x40)
/*
* Bits in the diagnostic register
*/
#define COP_0_DIAG_ITLB_CLEAR 0x04
#define COP_0_DIAG_BTB_CLEAR 0x02
#define COP_0_DIAG_RAS_DISABLE 0x01
#endif /* _MACHINE_LOONGSON2_H_ */
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