/* * 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) 2003, 2004 Ralf Baechle */ #ifndef __ASM_CPU_FEATURES_H #define __ASM_CPU_FEATURES_H #include #include #include #include /* * SMP assumption: Options of CPU 0 are a superset of all processors. * This is true for all known MIPS systems. */ #ifndef cpu_has_tlb #define cpu_has_tlb (cpu_data[0].options & MIPS_CPU_TLB) #endif #ifndef cpu_has_4kex #define cpu_has_4kex (cpu_data[0].options & MIPS_CPU_4KEX) #endif #ifndef cpu_has_4ktlb #define cpu_has_4ktlb (cpu_data[0].options & MIPS_CPU_4KTLB) #endif #ifndef cpu_has_fpu #define cpu_has_fpu (cpu_data[0].options & MIPS_CPU_FPU) #endif #ifndef cpu_has_32fpr #define cpu_has_32fpr (cpu_data[0].options & MIPS_CPU_32FPR) #endif #ifndef cpu_has_counter #define cpu_has_counter (cpu_data[0].options & MIPS_CPU_COUNTER) #endif #ifndef cpu_has_watch #define cpu_has_watch (cpu_data[0].options & MIPS_CPU_WATCH) #endif #ifndef cpu_has_mips16 #define cpu_has_mips16 (cpu_data[0].options & MIPS_CPU_MIPS16) #endif #ifndef cpu_has_divec #define cpu_has_divec (cpu_data[0].options & MIPS_CPU_DIVEC) #endif #ifndef cpu_has_vce #define cpu_has_vce (cpu_data[0].options & MIPS_CPU_VCE) #endif #ifndef cpu_has_cache_cdex_p #define cpu_has_cache_cdex_p (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P) #endif #ifndef cpu_has_cache_cdex_s #define cpu_has_cache_cdex_s (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S) #endif #ifndef cpu_has_prefetch #define cpu_has_prefetch (cpu_data[0].options & MIPS_CPU_PREFETCH) #endif #ifndef cpu_has_mcheck #define cpu_has_mcheck (cpu_data[0].options & MIPS_CPU_MCHECK) #endif #ifndef cpu_has_ejtag #define cpu_has_ejtag (cpu_data[0].options & MIPS_CPU_EJTAG) #endif #ifndef cpu_has_llsc #define cpu_has_llsc (cpu_data[0].options & MIPS_CPU_LLSC) #endif #ifndef cpu_has_vtag_icache #define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG) #endif #ifndef cpu_has_dc_aliases #define cpu_has_dc_aliases (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES) #endif #ifndef cpu_has_ic_fills_f_dc #define cpu_has_ic_fills_f_dc (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC) #endif /* * I-Cache snoops remote store. This only matters on SMP. Some multiprocessors * such as the R10000 have I-Caches that snoop local stores; the embedded ones * don't. For maintaining I-cache coherency this means we need to flush the * D-cache all the way back to whever the I-cache does refills from, so the * I-cache has a chance to see the new data at all. Then we have to flush the * I-cache also. * Note we may have been rescheduled and may no longer be running on the CPU * that did the store so we can't optimize this into only doing the flush on * the local CPU. */ #ifndef cpu_icache_snoops_remote_store #ifdef CONFIG_SMP #define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE) #else #define cpu_icache_snoops_remote_store 1 #endif #endif /* * Certain CPUs may throw bizarre exceptions if not the whole cacheline * contains valid instructions. For these we ensure proper alignment of * signal trampolines and pad them to the size of a full cache lines with * nops. This is also used in structure definitions so can't be a test macro * like the others. */ #ifndef PLAT_TRAMPOLINE_STUFF_LINE #define PLAT_TRAMPOLINE_STUFF_LINE 0UL #endif #ifdef CONFIG_32BIT # ifndef cpu_has_nofpuex # define cpu_has_nofpuex (cpu_data[0].options & MIPS_CPU_NOFPUEX) # endif # ifndef cpu_has_64bits # define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT) # endif # ifndef cpu_has_64bit_zero_reg # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT) # endif # ifndef cpu_has_64bit_gp_regs # define cpu_has_64bit_gp_regs 0 # endif # ifndef cpu_has_64bit_addresses # define cpu_has_64bit_addresses 0 # endif #endif #ifdef CONFIG_64BIT # ifndef cpu_has_nofpuex # define cpu_has_nofpuex 0 # endif # ifndef cpu_has_64bits # define cpu_has_64bits 1 # endif # ifndef cpu_has_64bit_zero_reg # define cpu_has_64bit_zero_reg 1 # endif # ifndef cpu_has_64bit_gp_regs # define cpu_has_64bit_gp_regs 1 # endif # ifndef cpu_has_64bit_addresses # define cpu_has_64bit_addresses 1 # endif #endif #ifndef cpu_has_subset_pcaches #define cpu_has_subset_pcaches (cpu_data[0].options & MIPS_CPU_SUBSET_CACHES) #endif #ifndef cpu_dcache_line_size #define cpu_dcache_line_size() current_cpu_data.dcache.linesz #endif #ifndef cpu_icache_line_size #define cpu_icache_line_size() current_cpu_data.icache.linesz #endif #ifndef cpu_scache_line_size #define cpu_scache_line_size() current_cpu_data.scache.linesz #endif #endif /* __ASM_CPU_FEATURES_H */