Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2024-12-28 16:52:18 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

s390/raid6: convert to use standard fpu_*() inline assemblies

Browse Source 
Move the s390 specific raid6 inline assemblies, make them generic, and
reuse them to implement the raid6 gen/xor implementation.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2024-02-03 11:45:24 +01:00
parent dcd3e1de9d
commit c8dde11df1
2 changed files with 58 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
arch/s390/include/asm/fpu-insn.h
View File

@ -108,6 +108,14 @@ static __always_inline void fpu_stfpc(unsigned int *fpc)
: "memory");
}
static __always_inline void fpu_vab(u8 v1, u8 v2, u8 v3)
{
asm volatile("VAB %[v1],%[v2],%[v3]"
:
: [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3)
: "memory");
}
static __always_inline void fpu_vcksm(u8 v1, u8 v2, u8 v3)
{
asm volatile("VCKSM %[v1],%[v2],%[v3]"
@ -116,6 +124,14 @@ static __always_inline void fpu_vcksm(u8 v1, u8 v2, u8 v3)
: "memory");
}
static __always_inline void fpu_vesravb(u8 v1, u8 v2, u8 v3)
{
asm volatile("VESRAVB %[v1],%[v2],%[v3]"
:
: [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3)
: "memory");
}
#ifdef CONFIG_CC_IS_CLANG
static __always_inline void fpu_vl(u8 v1, const void *vxr)
@ -231,6 +247,14 @@ static __always_inline void fpu_vll(u8 v1, u32 index, const void *vxr)
#endif /* CONFIG_CC_IS_CLANG */
static __always_inline void fpu_vlr(u8 v1, u8 v2)
{
asm volatile("VLR %[v1],%[v2]"
:
: [v1] "I" (v1), [v2] "I" (v2)
: "memory");
}
static __always_inline void fpu_vlvgf(u8 v, u32 val, u16 index)
{
asm volatile("VLVGF %[v],%[val],%[index]"
@ -239,6 +263,22 @@ static __always_inline void fpu_vlvgf(u8 v, u32 val, u16 index)
: "memory");
}
static __always_inline void fpu_vn(u8 v1, u8 v2, u8 v3)
{
asm volatile("VN %[v1],%[v2],%[v3]"
:
: [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3)
: "memory");
}
static __always_inline void fpu_vrepib(u8 v1, s16 i2)
{
asm volatile("VREPIB %[v1],%[i2]"
:
: [v1] "I" (v1), [i2] "K" (i2)
: "memory");
}
#ifdef CONFIG_CC_IS_CLANG
static __always_inline void fpu_vst(u8 v1, const void *vxr)
@ -335,6 +375,14 @@ static __always_inline void fpu_vstl(u8 v1, u32 index, const void *vxr)
#endif /* CONFIG_CC_IS_CLANG */
static __always_inline void fpu_vx(u8 v1, u8 v2, u8 v3)
{
asm volatile("VX %[v1],%[v2],%[v3]"
:
: [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3)
: "memory");
}
static __always_inline void fpu_vzero(u8 v)
{
asm volatile("VZERO %[v]"

55
lib/raid6/s390vx.uc
View File

@ -16,10 +16,10 @@
#define NSIZE 16
static inline void LOAD_CONST(void)
static __always_inline void LOAD_CONST(void)
{
asm volatile("VREPIB %v24,7");
asm volatile("VREPIB %v25,0x1d");
fpu_vrepib(24, 0x07);
fpu_vrepib(25, 0x1d);
}
/*
@ -27,10 +27,7 @@ static inline void LOAD_CONST(void)
* vector register y left by 1 bit and stores the result in
* vector register x.
*/
static inline void SHLBYTE(int x, int y)
{
asm volatile ("VAB %0,%1,%1" : : "i" (x), "i" (y));
}
#define SHLBYTE(x, y) fpu_vab(x, y, y)
/*
* For each of the 16 bytes in the vector register y the MASK()
@ -38,45 +35,13 @@ static inline void SHLBYTE(int x, int y)
* or 0x00 if the high bit is 0. The result is stored in vector
* register x.
*/
static inline void MASK(int x, int y)
{
asm volatile ("VESRAVB %0,%1,24" : : "i" (x), "i" (y));
}
#define MASK(x, y) fpu_vesravb(x, y, 24)
static inline void AND(int x, int y, int z)
{
asm volatile ("VN %0,%1,%2" : : "i" (x), "i" (y), "i" (z));
}
static inline void XOR(int x, int y, int z)
{
asm volatile ("VX %0,%1,%2" : : "i" (x), "i" (y), "i" (z));
}
static inline void LOAD_DATA(int x, u8 *ptr)
{
typedef struct { u8 _[16 * $#]; } addrtype;
register addrtype *__ptr asm("1") = (addrtype *) ptr;
asm volatile ("VLM %2,%3,0,%1"
: : "m" (*__ptr), "a" (__ptr), "i" (x),
"i" (x + $# - 1));
}
static inline void STORE_DATA(int x, u8 *ptr)
{
typedef struct { u8 _[16 * $#]; } addrtype;
register addrtype *__ptr asm("1") = (addrtype *) ptr;
asm volatile ("VSTM %2,%3,0,1"
: "=m" (*__ptr) : "a" (__ptr), "i" (x),
"i" (x + $# - 1));
}
static inline void COPY_VEC(int x, int y)
{
asm volatile ("VLR %0,%1" : : "i" (x), "i" (y));
}
#define AND(x, y, z) fpu_vn(x, y, z)
#define XOR(x, y, z) fpu_vx(x, y, z)
#define LOAD_DATA(x, ptr) fpu_vlm(x, x + $# - 1, ptr)
#define STORE_DATA(x, ptr) fpu_vstm(x, x + $# - 1, ptr)
#define COPY_VEC(x, y) fpu_vlr(x, y)
static void raid6_s390vx$#_gen_syndrome(int disks, size_t bytes, void **ptrs)
{