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authorJames Hogan <james.hogan@imgtec.com>2015-02-02 11:45:08 +0000
committerRalf Baechle <ralf@linux-mips.org>2015-03-31 12:04:12 +0200
commit9b3274bd585c6dff7848119e837bd5ce6c9173e2 (patch)
tree2fa7fad86c3d19394a7775c57146da2b303e76c3 /arch/mips/include/asm/cpu-features.h
parent4a91d8fb61e2b5218acc7a46d5dd28ff1f44f927 (diff)
downloadlinux-9b3274bd585c6dff7848119e837bd5ce6c9173e2.tar.bz2
MIPS: Add arch CDMM definitions and probing
Add architectural definitions and probing for the MIPS Common Device Memory Map (CDMM) region. When supported and enabled at a particular physical address, this region allows some number of per-CPU devices to be discovered and controlled via MMIO. A bit exists in Config3 to determine whether the feature is present, and a CDMMBase CP0 register allows the region to be enabled at a particular physical address. [ralf@linux-mips.org: Sort conflict with other patches.] Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/9178/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/cpu-features.h')
-rw-r--r--arch/mips/include/asm/cpu-features.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index 0d8208de9a3f..ea68a38bb61d 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -366,4 +366,8 @@
# define cpu_has_fre (cpu_data[0].options & MIPS_CPU_FRE)
#endif
+#ifndef cpu_has_cdmm
+# define cpu_has_cdmm (cpu_data[0].options & MIPS_CPU_CDMM)
+#endif
+
#endif /* __ASM_CPU_FEATURES_H */