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Specifically use the 32-bit version of fuword/suword since that's what

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we really want vs. the size changing 'long' (i386 vs. AMD64).
This fixes the problem with DRM with Radeon's on AMD64.

Submitted by:	Jung-uk Kim <jkim@niksun.com>
This commit is contained in:
David E. O'Brien 2004-12-02 09:38:34 +00:00
parent 10ce62b975
commit f0b078381d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=138308
1 changed files with 6 additions and 7 deletions
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13
sys/dev/drm/drm_os_freebsd.h
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@ -275,9 +275,9 @@ for ( ret = 0 ; !ret && !(condition) ; ) { \
#define DRM_COPY_TO_USER_UNCHECKED(arg1, arg2, arg3) \
copyout(arg2, arg1, arg3)
#define DRM_GET_USER_UNCHECKED(val, uaddr) \
((val) = fuword(uaddr), 0)
((val) = fuword32(uaddr), 0)
#define DRM_PUT_USER_UNCHECKED(uaddr, val) \
suword(uaddr, val)
suword32(uaddr, val)
/* DRM_READMEMORYBARRIER() prevents reordering of reads.
* DRM_WRITEMEMORYBARRIER() prevents reordering of writes.
@ -294,11 +294,10 @@ for ( ret = 0 ; !ret && !(condition) ; ) { \
#define DRM_WRITEMEMORYBARRIER() alpha_wmb();
#define DRM_MEMORYBARRIER() alpha_mb();
#elif defined(__amd64__)
#define DRM_READMEMORYBARRIER() __asm __volatile( \
"lock; addl $0,0(%%rsp)" : : : "memory");
#define DRM_WRITEMEMORYBARRIER() __asm __volatile("" : : : "memory");
#define DRM_MEMORYBARRIER() __asm __volatile( \
"lock; addl $0,0(%%rsp)" : : : "memory");
//#warning FIX-ME!!!
#define DRM_READMEMORYBARRIER() __asm __volatile("lfence" ::: "memory");
#define DRM_WRITEMEMORYBARRIER() __asm __volatile("sfence" ::: "memory");
#define DRM_MEMORYBARRIER() __asm __volatile("mfence" ::: "memory");
#endif
#define PAGE_ALIGN(addr) round_page(addr)