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| author | Markos Chandras <markos.chandras@imgtec.com> | 2014-07-14 12:43:28 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-08-02 00:06:38 +0200 |
| commit | e647e6b5b355bbf58d5c20c181e69474e5aee5fe (patch) | |
| tree | 7ee083801d1ca02986bcb972602a8b4428aea964 | |
| parent | 03a58777de0895864ccdb93249f3ce8d9fcc13ac (diff) | |
| download | linux-e647e6b5b355bbf58d5c20c181e69474e5aee5fe.tar.gz | |
MIPS: cpu: Add new cpu option for Hardware Table Walker.
Moreover, report hardware page table walker support as 'htw' in the ASE list of /proc/cpuinfo, if the core implements this feature. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7334/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/include/asm/cpu-features.h | 3 | ||||
| -rw-r--r-- | arch/mips/include/asm/cpu.h | 1 | ||||
| -rw-r--r-- | arch/mips/kernel/proc.c | 1 |
3 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index c7d8c997d93e..3b9768e92e9e 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -29,6 +29,9 @@ #ifndef cpu_has_eva #define cpu_has_eva (cpu_data[0].options & MIPS_CPU_EVA) #endif +#ifndef cpu_has_htw +#define cpu_has_htw (cpu_data[0].options & MIPS_CPU_HTW) +#endif /* * For the moment we don't consider R6000 and R8000 so we can assume that diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h index abacaa1f7293..ec6a0f964d6a 100644 --- a/arch/mips/include/asm/cpu.h +++ b/arch/mips/include/asm/cpu.h @@ -365,6 +365,7 @@ enum cpu_type_enum { #define MIPS_CPU_TLBINV 0x02000000ull /* CPU supports TLBINV/F */ #define MIPS_CPU_SEGMENTS 0x04000000ull /* CPU supports Segmentation Control registers */ #define MIPS_CPU_EVA 0x80000000ull /* CPU supports Enhanced Virtual Addressing */ +#define MIPS_CPU_HTW 0x100000000ull /* CPU support Hardware Page Table Walker */ /* * CPU ASE encodings diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c index 62c4439a147b..097fc8d14e42 100644 --- a/arch/mips/kernel/proc.c +++ b/arch/mips/kernel/proc.c @@ -113,6 +113,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) if (cpu_has_vz) seq_printf(m, "%s", " vz"); if (cpu_has_msa) seq_printf(m, "%s", " msa"); if (cpu_has_eva) seq_printf(m, "%s", " eva"); + if (cpu_has_htw) seq_printf(m, "%s", " htw"); seq_printf(m, "\n"); if (cpu_has_mmips) { |