/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2004 Cavium Networks */ #ifndef __ASM_MACH_CAVIUM_OCTEON_CPU_FEATURE_OVERRIDES_H #define __ASM_MACH_CAVIUM_OCTEON_CPU_FEATURE_OVERRIDES_H #include <linux/types.h> #include <asm/mipsregs.h> /* * Cavium Octeons are MIPS64v2 processors */ #define cpu_dcache_line_size() 128 #define cpu_icache_line_size() 128 #define cpu_has_4kex 1 #define cpu_has_3k_cache 0 #define cpu_has_4k_cache 0 #define cpu_has_counter 1 #define cpu_has_watch 1 #define cpu_has_divec 1 #define cpu_has_vce 0 #define cpu_has_cache_cdex_p 0 #define cpu_has_cache_cdex_s 0 #define cpu_has_prefetch 1 #define cpu_has_llsc 1 /* * We Disable LL/SC on non SMP systems as it is faster to disable * interrupts for atomic access than a LL/SC. */ #ifdef CONFIG_SMP # define kernel_uses_llsc 1 #else # define kernel_uses_llsc 0 #endif #define cpu_has_vtag_icache 1 #define cpu_has_dc_aliases 0 #define cpu_has_ic_fills_f_dc 0 #define cpu_has_64bits 1 #define cpu_has_octeon_cache 1 #define cpu_has_mips32r1 1 #define cpu_has_mips32r2 1 #define cpu_has_mips64r1 1 #define cpu_has_mips64r2 1 #define cpu_has_dsp 0 #define cpu_has_dsp2 0 #define cpu_has_mipsmt 0 #define cpu_has_vint 0 #define cpu_has_veic 0 #define cpu_hwrena_impl_bits (MIPS_HWRENA_IMPL1 | MIPS_HWRENA_IMPL2) #define cpu_has_wsbh 1 #define cpu_has_rixi (cpu_data[0].cputype != CPU_CAVIUM_OCTEON) #define PREFETCH_STRIDE 128 #ifdef __OCTEON__ /* * All gcc versions that have OCTEON support define __OCTEON__ and have the * __builtin_popcount support. */ #define ARCH_HAS_USABLE_BUILTIN_POPCOUNT 1 #endif /* * The last 256MB are reserved for device to device mappings and the * BAR1 hole. */ #define MAX_DMA32_PFN (((1ULL << 32) - (1ULL << 28)) >> PAGE_SHIFT) #endif