--- /dev/null
+/* -------------------------------------------------------------- */
+/* (C)Copyright 2001,2007, */
+/* International Business Machines Corporation, */
+/* Sony Computer Entertainment, Incorporated, */
+/* Toshiba Corporation, */
+/* */
+/* All Rights Reserved. */
+/* */
+/* Redistribution and use in source and binary forms, with or */
+/* without modification, are permitted provided that the */
+/* following conditions are met: */
+/* */
+/* - Redistributions of source code must retain the above copyright*/
+/* notice, this list of conditions and the following disclaimer. */
+/* */
+/* - Redistributions in binary form must reproduce the above */
+/* copyright notice, this list of conditions and the following */
+/* disclaimer in the documentation and/or other materials */
+/* provided with the distribution. */
+/* */
+/* - Neither the name of IBM Corporation nor the names of its */
+/* contributors may be used to endorse or promote products */
+/* derived from this software without specific prior written */
+/* permission. */
+/* */
+/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */
+/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */
+/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
+/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
+/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */
+/* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
+/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT */
+/* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */
+/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) */
+/* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
+/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR */
+/* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */
+/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+/* -------------------------------------------------------------- */
+/* PROLOG END TAG zYx */
+/*
+ * atomic.h - SPU atomic SHM counter operations.
+ *
+ * Interfaces patterned after, and hopefully compatible
+ * with PowerPC64-Linux atomic counter operations. Uses
+ * 32b values for various counters.
+ */
+#ifndef _SPU_ATOMIC_H_
+#define _SPU_ATOMIC_H_
+
+#include <sync_utils.h>
+#include <spu_mfcio.h>
+
+
+/* atomic_eaddr_t is a 64bit effective address
+ * that points to an atomic_t variable */
+typedef unsigned long long atomic_ea_t;
+
+#define DECL_ATOMIC_VARS() \
+ char _tmp[256]; \
+ char *tmp = (char *) ALIGN(_tmp, 128); \
+ volatile s32 *buf = (volatile s32 *) &tmp[0]; \
+ u32 size = 128, tagid = 0; \
+ s32 ret_val; \
+ u32 offset; \
+ addr64 ea64
+
+/* __atomic_op
+* Internal routine to acquire lock line reservation
+* then conditionally modify the counter variable
+* pointed to by 'v'. The 'replace' flag indicates
+* whether or not this is to be an arithmetic R-M-W
+* or a simple replace operation.
+*/
+#define ATOMIC_OP(__v, __val, __replace, __final_val) \
+{ \
+ char __tmp[256]; \
+ char *_tmp = (char *) ALIGN(__tmp, 128); \
+ volatile s32 *_buf = (volatile s32 *) &_tmp[0]; \
+ u32 _size = 128, _tagid = 0; \
+ s32 _status, _ret_val; \
+ u32 _offset; \
+ addr64 _ea64; \
+ \
+ _ea64.ull = ALIGN128_EA(__v); \
+ _offset = OFFSET128_EA_U32(__v); \
+ do { \
+ MFC_DMA(_buf, _ea64, _size, _tagid, MFC_GETLLAR_CMD); \
+ spu_readch (MFC_RdAtomicStat); \
+ \
+ _ret_val = _buf[_offset]; \
+ _buf[_offset] = (__replace) ? __val : _ret_val + __val; \
+ MFC_DMA(_buf, _ea64, _size, _tagid, MFC_PUTLLC_CMD); \
+ _status = spu_readch(MFC_RdAtomicStat); \
+ } while (_status != 0); \
+ \
+ __final_val = _ret_val; \
+}
+
+#endif /* _SPU_ATOMIC_H_ */
+
projects / debian / gnuradio / blobdiff