diff options
Diffstat (limited to 'nx-X11/extras/drm/bsd-core/drm_atomic.h')
-rw-r--r-- | nx-X11/extras/drm/bsd-core/drm_atomic.h | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/nx-X11/extras/drm/bsd-core/drm_atomic.h b/nx-X11/extras/drm/bsd-core/drm_atomic.h deleted file mode 100644 index b499fc967..000000000 --- a/nx-X11/extras/drm/bsd-core/drm_atomic.h +++ /dev/null @@ -1,141 +0,0 @@ -/** - * \file drm_atomic.h - * Atomic operations used in the DRM which may or may not be provided by the OS. - * - * \author Eric Anholt <anholt@FreeBSD.org> - */ - -/*- - * Copyright 2004 Eric Anholt - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - */ - -/* Many of these implementations are rather fake, but good enough. */ - -typedef u_int32_t atomic_t; - -#ifdef __FreeBSD__ -#define atomic_set(p, v) (*(p) = (v)) -#define atomic_read(p) (*(p)) -#define atomic_inc(p) atomic_add_int(p, 1) -#define atomic_dec(p) atomic_subtract_int(p, 1) -#define atomic_add(n, p) atomic_add_int(p, n) -#define atomic_sub(n, p) atomic_subtract_int(p, n) -#else /* __FreeBSD__ */ -/* FIXME */ -#define atomic_set(p, v) (*(p) = (v)) -#define atomic_read(p) (*(p)) -#define atomic_inc(p) (*(p) += 1) -#define atomic_dec(p) (*(p) -= 1) -#define atomic_add(n, p) (*(p) += (n)) -#define atomic_sub(n, p) (*(p) -= (n)) -/* FIXME */ -#define atomic_add_int(p, v) *(p) += v -#define atomic_subtract_int(p, v) *(p) -= v -#define atomic_set_int(p, bits) *(p) |= (bits) -#define atomic_clear_int(p, bits) *(p) &= ~(bits) -#endif /* !__FreeBSD__ */ - -#if !defined(__FreeBSD_version) || (__FreeBSD_version < 500000) -#if defined(__i386__) -/* The extra atomic functions from 5.0 haven't been merged to 4.x */ -static __inline int -atomic_cmpset_int(volatile u_int *dst, u_int exp, u_int src) -{ - int res = exp; - - __asm __volatile ( - " lock ; " - " cmpxchgl %1,%2 ; " - " setz %%al ; " - " movzbl %%al,%0 ; " - "1: " - "# atomic_cmpset_int" - : "+a" (res) /* 0 (result) */ - : "r" (src), /* 1 */ - "m" (*(dst)) /* 2 */ - : "memory"); - - return (res); -} -#else /* __i386__ */ -static __inline int -atomic_cmpset_int(__volatile__ int *dst, int old, int new) -{ - int s = splhigh(); - if (*dst==old) { - *dst = new; - splx(s); - return 1; - } - splx(s); - return 0; -} -#endif /* !__i386__ */ -#endif /* !__FreeBSD_version || __FreeBSD_version < 500000 */ - -static __inline atomic_t -test_and_set_bit(int b, volatile void *p) -{ - int s = splhigh(); - unsigned int m = 1<<b; - unsigned int r = *(volatile int *)p & m; - *(volatile int *)p |= m; - splx(s); - return r; -} - -static __inline void -clear_bit(int b, volatile void *p) -{ - atomic_clear_int(((volatile int *)p) + (b >> 5), 1 << (b & 0x1f)); -} - -static __inline void -set_bit(int b, volatile void *p) -{ - atomic_set_int(((volatile int *)p) + (b >> 5), 1 << (b & 0x1f)); -} - -static __inline int -test_bit(int b, volatile void *p) -{ - return ((volatile int *)p)[b >> 5] & (1 << (b & 0x1f)); -} - -static __inline int -find_first_zero_bit(volatile void *p, int max) -{ - int b; - volatile int *ptr = (volatile int *)p; - - for (b = 0; b < max; b += 32) { - if (ptr[b >> 5] != ~0) { - for (;;) { - if ((ptr[b >> 5] & (1 << (b & 0x1f))) == 0) - return b; - b++; - } - } - } - return max; -} |