1 /* $OpenBSD: loongson2.h,v 1.1 2009/08/06 21:11:38 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 _MACHINE_LOONGSON2_H_ 20 #define _MACHINE_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_CLEAR 0x01 59 60 #endif /* _MACHINE_LOONGSON2_H_ */ 61