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Diffstat (limited to 'include/asm-x86_64/xor.h')
-rw-r--r--include/asm-x86_64/xor.h354
1 files changed, 0 insertions, 354 deletions
diff --git a/include/asm-x86_64/xor.h b/include/asm-x86_64/xor.h
deleted file mode 100644
index f942fcc21831..000000000000
--- a/include/asm-x86_64/xor.h
+++ /dev/null
@@ -1,354 +0,0 @@
-/*
- * include/asm-x86_64/xor.h
- *
- * Optimized RAID-5 checksumming functions for MMX and SSE.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * You should have received a copy of the GNU General Public License
- * (for example /usr/src/linux/COPYING); if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
-/*
- * Cache avoiding checksumming functions utilizing KNI instructions
- * Copyright (C) 1999 Zach Brown (with obvious credit due Ingo)
- */
-
-/*
- * Based on
- * High-speed RAID5 checksumming functions utilizing SSE instructions.
- * Copyright (C) 1998 Ingo Molnar.
- */
-
-/*
- * x86-64 changes / gcc fixes from Andi Kleen.
- * Copyright 2002 Andi Kleen, SuSE Labs.
- *
- * This hasn't been optimized for the hammer yet, but there are likely
- * no advantages to be gotten from x86-64 here anyways.
- */
-
-typedef struct { unsigned long a,b; } __attribute__((aligned(16))) xmm_store_t;
-
-/* Doesn't use gcc to save the XMM registers, because there is no easy way to
- tell it to do a clts before the register saving. */
-#define XMMS_SAVE do { \
- preempt_disable(); \
- asm volatile ( \
- "movq %%cr0,%0 ;\n\t" \
- "clts ;\n\t" \
- "movups %%xmm0,(%1) ;\n\t" \
- "movups %%xmm1,0x10(%1) ;\n\t" \
- "movups %%xmm2,0x20(%1) ;\n\t" \
- "movups %%xmm3,0x30(%1) ;\n\t" \
- : "=&r" (cr0) \
- : "r" (xmm_save) \
- : "memory"); \
-} while(0)
-
-#define XMMS_RESTORE do { \
- asm volatile ( \
- "sfence ;\n\t" \
- "movups (%1),%%xmm0 ;\n\t" \
- "movups 0x10(%1),%%xmm1 ;\n\t" \
- "movups 0x20(%1),%%xmm2 ;\n\t" \
- "movups 0x30(%1),%%xmm3 ;\n\t" \
- "movq %0,%%cr0 ;\n\t" \
- : \
- : "r" (cr0), "r" (xmm_save) \
- : "memory"); \
- preempt_enable(); \
-} while(0)
-
-#define OFFS(x) "16*("#x")"
-#define PF_OFFS(x) "256+16*("#x")"
-#define PF0(x) " prefetchnta "PF_OFFS(x)"(%[p1]) ;\n"
-#define LD(x,y) " movaps "OFFS(x)"(%[p1]), %%xmm"#y" ;\n"
-#define ST(x,y) " movaps %%xmm"#y", "OFFS(x)"(%[p1]) ;\n"
-#define PF1(x) " prefetchnta "PF_OFFS(x)"(%[p2]) ;\n"
-#define PF2(x) " prefetchnta "PF_OFFS(x)"(%[p3]) ;\n"
-#define PF3(x) " prefetchnta "PF_OFFS(x)"(%[p4]) ;\n"
-#define PF4(x) " prefetchnta "PF_OFFS(x)"(%[p5]) ;\n"
-#define PF5(x) " prefetchnta "PF_OFFS(x)"(%[p6]) ;\n"
-#define XO1(x,y) " xorps "OFFS(x)"(%[p2]), %%xmm"#y" ;\n"
-#define XO2(x,y) " xorps "OFFS(x)"(%[p3]), %%xmm"#y" ;\n"
-#define XO3(x,y) " xorps "OFFS(x)"(%[p4]), %%xmm"#y" ;\n"
-#define XO4(x,y) " xorps "OFFS(x)"(%[p5]), %%xmm"#y" ;\n"
-#define XO5(x,y) " xorps "OFFS(x)"(%[p6]), %%xmm"#y" ;\n"
-
-
-static void
-xor_sse_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
-{
- unsigned int lines = bytes >> 8;
- unsigned long cr0;
- xmm_store_t xmm_save[4];
-
- XMMS_SAVE;
-
- asm volatile (
-#undef BLOCK
-#define BLOCK(i) \
- LD(i,0) \
- LD(i+1,1) \
- PF1(i) \
- PF1(i+2) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF0(i+4) \
- PF0(i+6) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addq %[inc], %[p1] ;\n"
- " addq %[inc], %[p2] ;\n"
- " decl %[cnt] ; jnz 1b"
- : [p1] "+r" (p1), [p2] "+r" (p2), [cnt] "+r" (lines)
- : [inc] "r" (256UL)
- : "memory");
-
- XMMS_RESTORE;
-}
-
-static void
-xor_sse_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3)
-{
- unsigned int lines = bytes >> 8;
- xmm_store_t xmm_save[4];
- unsigned long cr0;
-
- XMMS_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- PF1(i) \
- PF1(i+2) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF2(i) \
- PF2(i+2) \
- PF0(i+4) \
- PF0(i+6) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addq %[inc], %[p1] ;\n"
- " addq %[inc], %[p2] ;\n"
- " addq %[inc], %[p3] ;\n"
- " decl %[cnt] ; jnz 1b"
- : [cnt] "+r" (lines),
- [p1] "+r" (p1), [p2] "+r" (p2), [p3] "+r" (p3)
- : [inc] "r" (256UL)
- : "memory");
- XMMS_RESTORE;
-}
-
-static void
-xor_sse_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4)
-{
- unsigned int lines = bytes >> 8;
- xmm_store_t xmm_save[4];
- unsigned long cr0;
-
- XMMS_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- PF1(i) \
- PF1(i+2) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF2(i) \
- PF2(i+2) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- PF3(i) \
- PF3(i+2) \
- PF0(i+4) \
- PF0(i+6) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- XO3(i,0) \
- XO3(i+1,1) \
- XO3(i+2,2) \
- XO3(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addq %[inc], %[p1] ;\n"
- " addq %[inc], %[p2] ;\n"
- " addq %[inc], %[p3] ;\n"
- " addq %[inc], %[p4] ;\n"
- " decl %[cnt] ; jnz 1b"
- : [cnt] "+c" (lines),
- [p1] "+r" (p1), [p2] "+r" (p2), [p3] "+r" (p3), [p4] "+r" (p4)
- : [inc] "r" (256UL)
- : "memory" );
-
- XMMS_RESTORE;
-}
-
-static void
-xor_sse_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4, unsigned long *p5)
-{
- unsigned int lines = bytes >> 8;
- xmm_store_t xmm_save[4];
- unsigned long cr0;
-
- XMMS_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- PF1(i) \
- PF1(i+2) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF2(i) \
- PF2(i+2) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- PF3(i) \
- PF3(i+2) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- PF4(i) \
- PF4(i+2) \
- PF0(i+4) \
- PF0(i+6) \
- XO3(i,0) \
- XO3(i+1,1) \
- XO3(i+2,2) \
- XO3(i+3,3) \
- XO4(i,0) \
- XO4(i+1,1) \
- XO4(i+2,2) \
- XO4(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addq %[inc], %[p1] ;\n"
- " addq %[inc], %[p2] ;\n"
- " addq %[inc], %[p3] ;\n"
- " addq %[inc], %[p4] ;\n"
- " addq %[inc], %[p5] ;\n"
- " decl %[cnt] ; jnz 1b"
- : [cnt] "+c" (lines),
- [p1] "+r" (p1), [p2] "+r" (p2), [p3] "+r" (p3), [p4] "+r" (p4),
- [p5] "+r" (p5)
- : [inc] "r" (256UL)
- : "memory");
-
- XMMS_RESTORE;
-}
-
-static struct xor_block_template xor_block_sse = {
- .name = "generic_sse",
- .do_2 = xor_sse_2,
- .do_3 = xor_sse_3,
- .do_4 = xor_sse_4,
- .do_5 = xor_sse_5,
-};
-
-#undef XOR_TRY_TEMPLATES
-#define XOR_TRY_TEMPLATES \
- do { \
- xor_speed(&xor_block_sse); \
- } while (0)
-
-/* We force the use of the SSE xor block because it can write around L2.
- We may also be able to load into the L1 only depending on how the cpu
- deals with a load to a line that is being prefetched. */
-#define XOR_SELECT_TEMPLATE(FASTEST) (&xor_block_sse)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.