Eric Lee / smarc-fsl-linux-kernel

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arch/x86/include/asm/copy_mc_test.h 1.42 KB
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ec6347bb4   Dan Williams   x86, powerpc: Ren... 
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  /* SPDX-License-Identifier: GPL-2.0 */
  #ifndef _COPY_MC_TEST_H_
  #define _COPY_MC_TEST_H_
  
  #ifndef __ASSEMBLY__
  #ifdef CONFIG_COPY_MC_TEST
  extern unsigned long copy_mc_test_src;
  extern unsigned long copy_mc_test_dst;
  
  static inline void copy_mc_inject_src(void *addr)
  {
  	if (addr)
  		copy_mc_test_src = (unsigned long) addr;
  	else
  		copy_mc_test_src = ~0UL;
  }
  
  static inline void copy_mc_inject_dst(void *addr)
  {
  	if (addr)
  		copy_mc_test_dst = (unsigned long) addr;
  	else
  		copy_mc_test_dst = ~0UL;
  }
  #else /* CONFIG_COPY_MC_TEST */
  static inline void copy_mc_inject_src(void *addr)
  {
  }
  
  static inline void copy_mc_inject_dst(void *addr)
  {
  }
  #endif /* CONFIG_COPY_MC_TEST */
  
  #else /* __ASSEMBLY__ */
  #include <asm/export.h>
  
  #ifdef CONFIG_COPY_MC_TEST
  .macro COPY_MC_TEST_CTL
  	.pushsection .data
  	.align 8
  	.globl copy_mc_test_src
  	copy_mc_test_src:
  		.quad 0
  	EXPORT_SYMBOL_GPL(copy_mc_test_src)
  	.globl copy_mc_test_dst
  	copy_mc_test_dst:
  		.quad 0
  	EXPORT_SYMBOL_GPL(copy_mc_test_dst)
  	.popsection
  .endm
  
  .macro COPY_MC_TEST_SRC reg count target
  	leaq \count(\reg), %r9
  	cmp copy_mc_test_src, %r9
  	ja \target
  .endm
  
  .macro COPY_MC_TEST_DST reg count target
  	leaq \count(\reg), %r9
  	cmp copy_mc_test_dst, %r9
  	ja \target
  .endm
  #else
  .macro COPY_MC_TEST_CTL
  .endm
  
  .macro COPY_MC_TEST_SRC reg count target
  .endm
  
  .macro COPY_MC_TEST_DST reg count target
  .endm
  #endif /* CONFIG_COPY_MC_TEST */
  #endif /* __ASSEMBLY__ */
  #endif /* _COPY_MC_TEST_H_ */