Merge tag 'usb-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

[cascardo/linux.git] / arch / arm64 / include / asm / cpufeature.h

diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h
index a5c769b..b9b6494 100644 (file)
--- a/arch/arm64/include/asm/cpufeature.h
+++ b/arch/arm64/include/asm/cpufeature.h
@@ -30,12 +30,13 @@
 #define ARM64_HAS_LSE_ATOMICS                  5
 #define ARM64_WORKAROUND_CAVIUM_23154          6
 #define ARM64_WORKAROUND_834220                        7
-/* #define ARM64_HAS_NO_HW_PREFETCH            8 */
-/* #define ARM64_HAS_UAO                       9 */
-/* #define ARM64_ALT_PAN_NOT_UAO               10 */
+#define ARM64_HAS_NO_HW_PREFETCH               8
+#define ARM64_HAS_UAO                          9
+#define ARM64_ALT_PAN_NOT_UAO                  10
 #define ARM64_HAS_VIRT_HOST_EXTN               11
+#define ARM64_WORKAROUND_CAVIUM_27456          12
 
-#define ARM64_NCAPS                            12
+#define ARM64_NCAPS                            13
 
 #ifndef __ASSEMBLY__
 
@@ -89,9 +90,10 @@ struct arm64_cpu_capabilities {
 
                struct {        /* Feature register checking */
                        u32 sys_reg;
-                       int field_pos;
-                       int min_field_value;
-                       int hwcap_type;
+                       u8 field_pos;
+                       u8 min_field_value;
+                       u8 hwcap_type;
+                       bool sign;
                        unsigned long hwcap;
                };
        };
@@ -121,15 +123,15 @@ static inline void cpus_set_cap(unsigned int num)
 }
 
 static inline int __attribute_const__
-cpuid_feature_extract_field_width(u64 features, int field, int width)
+cpuid_feature_extract_signed_field_width(u64 features, int field, int width)
 {
        return (s64)(features << (64 - width - field)) >> (64 - width);
 }
 
 static inline int __attribute_const__
-cpuid_feature_extract_field(u64 features, int field)
+cpuid_feature_extract_signed_field(u64 features, int field)
 {
-       return cpuid_feature_extract_field_width(features, field, 4);
+       return cpuid_feature_extract_signed_field_width(features, field, 4);
 }
 
 static inline unsigned int __attribute_const__
@@ -149,17 +151,23 @@ static inline u64 arm64_ftr_mask(struct arm64_ftr_bits *ftrp)
        return (u64)GENMASK(ftrp->shift + ftrp->width - 1, ftrp->shift);
 }
 
+static inline int __attribute_const__
+cpuid_feature_extract_field(u64 features, int field, bool sign)
+{
+       return (sign) ?
+               cpuid_feature_extract_signed_field(features, field) :
+               cpuid_feature_extract_unsigned_field(features, field);
+}
+
 static inline s64 arm64_ftr_value(struct arm64_ftr_bits *ftrp, u64 val)
 {
-       return ftrp->sign ?
-               cpuid_feature_extract_field_width(val, ftrp->shift, ftrp->width) :
-               cpuid_feature_extract_unsigned_field_width(val, ftrp->shift, ftrp->width);
+       return (s64)cpuid_feature_extract_field(val, ftrp->shift, ftrp->sign);
 }
 
 static inline bool id_aa64mmfr0_mixed_endian_el0(u64 mmfr0)
 {
-       return cpuid_feature_extract_field(mmfr0, ID_AA64MMFR0_BIGENDEL_SHIFT) == 0x1 ||
-               cpuid_feature_extract_field(mmfr0, ID_AA64MMFR0_BIGENDEL0_SHIFT) == 0x1;
+       return cpuid_feature_extract_unsigned_field(mmfr0, ID_AA64MMFR0_BIGENDEL_SHIFT) == 0x1 ||
+               cpuid_feature_extract_unsigned_field(mmfr0, ID_AA64MMFR0_BIGENDEL0_SHIFT) == 0x1;
 }
 
 void __init setup_cpu_features(void);
@@ -168,13 +176,7 @@ void update_cpu_capabilities(const struct arm64_cpu_capabilities *caps,
                            const char *info);
 void check_local_cpu_errata(void);
 
-#ifdef CONFIG_HOTPLUG_CPU
 void verify_local_cpu_capabilities(void);
-#else
-static inline void verify_local_cpu_capabilities(void)
-{
-}
-#endif
 
 u64 read_system_reg(u32 id);