| /* |
| * 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 ARCH_HAS_SPINLOCK_PREFETCH 1 |
| #define spin_lock_prefetch(x) prefetch(x) |
| #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 |
