修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/arch/xtensa/lib/checksum.S
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@@ -1,3 +1,4 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * INET		An implementation of the TCP/IP protocol suite for the LINUX
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  *		operating system.  INET is implemented using the  BSD Socket
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@@ -7,17 +8,12 @@
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  *
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  * Xtensa version:  Copyright (C) 2001 Tensilica, Inc. by Kevin Chea
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  *                  Optimized by Joe Taylor
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- *
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- *		This program is free software; you can redistribute it and/or
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- *		modify it under the terms of the GNU General Public License
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- *		as published by the Free Software Foundation; either version
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- *		2 of the License, or (at your option) any later version.
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  */
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 #include <linux/errno.h>
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 #include <linux/linkage.h>
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-#include <variant/core.h>
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 #include <asm/asmmacro.h>
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+#include <asm/core.h>
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 /*
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  * computes a partial checksum, e.g. for TCP/UDP fragments
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@@ -47,7 +43,7 @@
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 	 * Experiments with Ethernet and SLIP connections show that buf
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 	 * is aligned on either a 2-byte or 4-byte boundary.
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 	 */
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-	entry	sp, 32
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+	abi_entry_default
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 	extui	a5, a2, 0, 2
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 	bnez	a5, 8f		/* branch if 2-byte aligned */
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 	/* Fall-through on common case, 4-byte alignment */
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@@ -111,7 +107,7 @@
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 	ONES_ADD(a4, a6)
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 7:
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 	mov	a2, a4
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-	retw
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+	abi_ret_default
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 	/* uncommon case, buf is 2-byte aligned */
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 8:
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@@ -179,19 +175,14 @@
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  */
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 /*
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-unsigned int csum_partial_copy_generic (const char *src, char *dst, int len,
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-					int sum, int *src_err_ptr, int *dst_err_ptr)
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+unsigned int csum_partial_copy_generic (const char *src, char *dst, int len)
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 	a2  = src
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 	a3  = dst
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 	a4  = len
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 	a5  = sum
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-	a6  = src_err_ptr
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-	a7  = dst_err_ptr
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 	a8  = temp
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 	a9  = temp
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 	a10 = temp
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-	a11 = original len for exception handling
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-	a12 = original dst for exception handling
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     This function is optimized for 4-byte aligned addresses.  Other
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     alignments work, but not nearly as efficiently.
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@@ -199,9 +190,8 @@
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 ENTRY(csum_partial_copy_generic)
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-	entry	sp, 32
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-	mov	a12, a3
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-	mov	a11, a4
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+	abi_entry_default
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+	movi	a5, -1
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 	or	a10, a2, a3
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 	/* We optimize the following alignment tests for the 4-byte
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@@ -232,26 +222,26 @@
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 #endif
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 EX(10f)	l32i	a9, a2, 0
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 EX(10f)	l32i	a8, a2, 4
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-EX(11f)	s32i	a9, a3, 0
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-EX(11f)	s32i	a8, a3, 4
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+EX(10f)	s32i	a9, a3, 0
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+EX(10f)	s32i	a8, a3, 4
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 	ONES_ADD(a5, a9)
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 	ONES_ADD(a5, a8)
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 EX(10f)	l32i	a9, a2, 8
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 EX(10f)	l32i	a8, a2, 12
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-EX(11f)	s32i	a9, a3, 8
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-EX(11f)	s32i	a8, a3, 12
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+EX(10f)	s32i	a9, a3, 8
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+EX(10f)	s32i	a8, a3, 12
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 	ONES_ADD(a5, a9)
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 	ONES_ADD(a5, a8)
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 EX(10f)	l32i	a9, a2, 16
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 EX(10f)	l32i	a8, a2, 20
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-EX(11f)	s32i	a9, a3, 16
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-EX(11f)	s32i	a8, a3, 20
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+EX(10f)	s32i	a9, a3, 16
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+EX(10f)	s32i	a8, a3, 20
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 	ONES_ADD(a5, a9)
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 	ONES_ADD(a5, a8)
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 EX(10f)	l32i	a9, a2, 24
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 EX(10f)	l32i	a8, a2, 28
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-EX(11f)	s32i	a9, a3, 24
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-EX(11f)	s32i	a8, a3, 28
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+EX(10f)	s32i	a9, a3, 24
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+EX(10f)	s32i	a8, a3, 28
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 	ONES_ADD(a5, a9)
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 	ONES_ADD(a5, a8)
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 	addi	a2, a2, 32
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@@ -271,7 +261,7 @@
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 .Loop6:
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 #endif
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 EX(10f)	l32i	a9, a2, 0
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-EX(11f)	s32i	a9, a3, 0
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+EX(10f)	s32i	a9, a3, 0
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 	ONES_ADD(a5, a9)
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 	addi	a2, a2, 4
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 	addi	a3, a3, 4
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@@ -302,7 +292,7 @@
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 .Loop7:
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 #endif
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 EX(10f)	l16ui	a9, a2, 0
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-EX(11f)	s16i	a9, a3, 0
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+EX(10f)	s16i	a9, a3, 0
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 	ONES_ADD(a5, a9)
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 	addi	a2, a2, 2
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 	addi	a3, a3, 2
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@@ -313,14 +303,14 @@
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 	/* This section processes a possible trailing odd byte. */
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 	_bbci.l	a4, 0, 8f	/* 1-byte chunk */
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 EX(10f)	l8ui	a9, a2, 0
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-EX(11f)	s8i	a9, a3, 0
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+EX(10f)	s8i	a9, a3, 0
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 #ifdef __XTENSA_EB__
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 	slli	a9, a9, 8	/* shift byte to bits 8..15 */
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 #endif
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 	ONES_ADD(a5, a9)
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 8:
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 	mov	a2, a5
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-	retw
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+	abi_ret_default
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 5:
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 	/* Control branch to here when either src or dst is odd.  We
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@@ -338,8 +328,8 @@
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 #endif
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 EX(10f)	l8ui	a9, a2, 0
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 EX(10f)	l8ui	a8, a2, 1
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-EX(11f)	s8i	a9, a3, 0
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-EX(11f)	s8i	a8, a3, 1
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+EX(10f)	s8i	a9, a3, 0
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+EX(10f)	s8i	a8, a3, 1
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 #ifdef __XTENSA_EB__
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 	slli	a9, a9, 8	/* combine into a single 16-bit value */
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 #else				/* for checksum computation */
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@@ -360,39 +350,8 @@
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 # Exception handler:
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 .section .fixup, "ax"
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-/*
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-	a6  = src_err_ptr
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-	a7  = dst_err_ptr
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-	a11 = original len for exception handling
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-	a12 = original dst for exception handling
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-*/
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-
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 10:
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-	_movi	a2, -EFAULT
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-	s32i	a2, a6, 0	/* src_err_ptr */
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-
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-	# clear the complete destination - computing the rest
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-	# is too much work
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 	movi	a2, 0
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-#if XCHAL_HAVE_LOOPS
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-	loopgtz	a11, 2f
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-#else
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-	beqz	a11, 2f
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-	add	a11, a11, a12	/* a11 = ending address */
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-.Leloop:
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-#endif
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-	s8i	a2, a12, 0
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-	addi	a12, a12, 1
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-#if !XCHAL_HAVE_LOOPS
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-	blt	a12, a11, .Leloop
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-#endif
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-2:
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-	retw
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-
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-11:
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-	movi	a2, -EFAULT
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-	s32i	a2, a7, 0	/* dst_err_ptr */
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-	movi	a2, 0
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-	retw
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+	abi_ret_default
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