1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2004 Cavium Networks 7 */ 8 #ifndef __ASM_MACH_CAVIUM_OCTEON_CPU_FEATURE_OVERRIDES_H 9 #define __ASM_MACH_CAVIUM_OCTEON_CPU_FEATURE_OVERRIDES_H 10 11 #include <linux/types.h> 12 #include <asm/mipsregs.h> 13 14 /* 15 * Cavium Octeons are MIPS64v2 processors 16 */ 17 #define cpu_dcache_line_size() 128 18 #define cpu_icache_line_size() 128 19 20 21 #define cpu_has_4kex 1 22 #define cpu_has_3k_cache 0 23 #define cpu_has_4k_cache 0 24 #define cpu_has_counter 1 25 #define cpu_has_watch 1 26 #define cpu_has_divec 1 27 #define cpu_has_vce 0 28 #define cpu_has_cache_cdex_p 0 29 #define cpu_has_cache_cdex_s 0 30 #define cpu_has_prefetch 1 31 32 #define cpu_has_llsc 1 33 /* 34 * We Disable LL/SC on non SMP systems as it is faster to disable 35 * interrupts for atomic access than a LL/SC. 36 */ 37 #ifdef CONFIG_SMP 38 # define kernel_uses_llsc 1 39 #else 40 # define kernel_uses_llsc 0 41 #endif 42 #define cpu_has_vtag_icache 1 43 #define cpu_has_dc_aliases 0 44 #define cpu_has_ic_fills_f_dc 0 45 #define cpu_has_64bits 1 46 #define cpu_has_octeon_cache 1 47 #define cpu_has_mips32r1 1 48 #define cpu_has_mips32r2 1 49 #define cpu_has_mips64r1 1 50 #define cpu_has_mips64r2 1 51 #define cpu_has_dsp 0 52 #define cpu_has_dsp2 0 53 #define cpu_has_mipsmt 0 54 #define cpu_has_vint 0 55 #define cpu_has_veic 0 56 #define cpu_hwrena_impl_bits (MIPS_HWRENA_IMPL1 | MIPS_HWRENA_IMPL2) 57 #define cpu_has_wsbh 1 58 59 #define cpu_has_rixi (cpu_data[0].cputype != CPU_CAVIUM_OCTEON) 60 61 #define PREFETCH_STRIDE 128 62 63 #ifdef __OCTEON__ 64 /* 65 * All gcc versions that have OCTEON support define __OCTEON__ and have the 66 * __builtin_popcount support. 67 */ 68 #define ARCH_HAS_USABLE_BUILTIN_POPCOUNT 1 69 #endif 70 71 /* 72 * The last 256MB are reserved for device to device mappings and the 73 * BAR1 hole. 74 */ 75 #define MAX_DMA32_PFN (((1ULL << 32) - (1ULL << 28)) >> PAGE_SHIFT) 76 77 #endif 78