1*4882a593Smuzhiyun/* 2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive 4*4882a593Smuzhiyun * for more details. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Micro-assembler generated clear_page/copy_page functions. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Copyright (C) 2012 MIPS Technologies, Inc. 9*4882a593Smuzhiyun * Copyright (C) 2012 Ralf Baechle <ralf@linux-mips.org> 10*4882a593Smuzhiyun */ 11*4882a593Smuzhiyun#include <asm/asm.h> 12*4882a593Smuzhiyun#include <asm/export.h> 13*4882a593Smuzhiyun#include <asm/regdef.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun#ifdef CONFIG_SIBYTE_DMA_PAGEOPS 16*4882a593Smuzhiyun#define cpu_clear_page_function_name clear_page_cpu 17*4882a593Smuzhiyun#define cpu_copy_page_function_name copy_page_cpu 18*4882a593Smuzhiyun#else 19*4882a593Smuzhiyun#define cpu_clear_page_function_name clear_page 20*4882a593Smuzhiyun#define cpu_copy_page_function_name copy_page 21*4882a593Smuzhiyun#endif 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun/* 24*4882a593Smuzhiyun * Maximum sizes: 25*4882a593Smuzhiyun * 26*4882a593Smuzhiyun * R4000 128 bytes S-cache: 0x058 bytes 27*4882a593Smuzhiyun * R4600 v1.7: 0x05c bytes 28*4882a593Smuzhiyun * R4600 v2.0: 0x060 bytes 29*4882a593Smuzhiyun * With prefetching, 16 word strides 0x120 bytes 30*4882a593Smuzhiyun */ 31*4882a593SmuzhiyunEXPORT(__clear_page_start) 32*4882a593SmuzhiyunLEAF(cpu_clear_page_function_name) 33*4882a593SmuzhiyunEXPORT_SYMBOL(cpu_clear_page_function_name) 34*4882a593Smuzhiyun1: j 1b /* Dummy, will be replaced. */ 35*4882a593Smuzhiyun .space 288 36*4882a593SmuzhiyunEND(cpu_clear_page_function_name) 37*4882a593SmuzhiyunEXPORT(__clear_page_end) 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun/* 40*4882a593Smuzhiyun * Maximum sizes: 41*4882a593Smuzhiyun * 42*4882a593Smuzhiyun * R4000 128 bytes S-cache: 0x11c bytes 43*4882a593Smuzhiyun * R4600 v1.7: 0x080 bytes 44*4882a593Smuzhiyun * R4600 v2.0: 0x07c bytes 45*4882a593Smuzhiyun * With prefetching, 16 word strides 0x540 bytes 46*4882a593Smuzhiyun */ 47*4882a593SmuzhiyunEXPORT(__copy_page_start) 48*4882a593SmuzhiyunLEAF(cpu_copy_page_function_name) 49*4882a593SmuzhiyunEXPORT_SYMBOL(cpu_copy_page_function_name) 50*4882a593Smuzhiyun1: j 1b /* Dummy, will be replaced. */ 51*4882a593Smuzhiyun .space 1344 52*4882a593SmuzhiyunEND(cpu_copy_page_function_name) 53*4882a593SmuzhiyunEXPORT(__copy_page_end) 54