1 files changed, 151 insertions, 0 deletions
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-hal.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-hal.h
new file mode 100644
index 00000000..82cf3c11
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-hal.h
@@ -0,0 +1,151 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice 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 THE AUTHORS OR COPYRIGHT HOLDERS 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.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-hal.h
+ *
+ * Platform-specific HAL definitions
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-hal.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+/* ...primitive types */
+#include "xf-types.h"
+
+/* ...XTOS runtime */
+#include <xtensa/xtruntime.h>
+
+/*******************************************************************************
+ * Auxilliary macros definitions
+ ******************************************************************************/
+
+/* ...use system-specific cache-line size */
+#define XF_PROXY_ALIGNMENT              XCHAL_DCACHE_LINESIZE
+
+/* ...properly aligned shared memory structure */
+#define __xf_shmem__        __attribute__((__aligned__(XF_PROXY_ALIGNMENT)))
+
+/*******************************************************************************
+ * Interrupt control
+ ******************************************************************************/
+
+/* ...disable interrupts on given core */
+static inline u32 xf_isr_disable(u32 core)
+{
+    /* ...no actual dependency on the core identifier */
+    return XTOS_SET_INTLEVEL(XCHAL_EXCM_LEVEL);
+}
+
+/* ...enable interrupts on given core */
+static inline void xf_isr_restore(u32 core, u32 status)
+{
+    /* ...no actual dependency on the core identifier */
+    XTOS_RESTORE_INTLEVEL(status);
+}
+
+/*******************************************************************************
+ * Auxiliary system-specific functions
+ ******************************************************************************/
+
+#if XF_CFG_CORES_NUM > 1
+/* ...current core identifier (from HW) */
+static inline u32 xf_core_id(void)
+{
+    /* ...retrieve core identifier from HAL */
+    return (u32) xthal_get_prid();
+}
+#else
+#define xf_core_id()        0
+#endif
+
+/*******************************************************************************
+ * Atomic operations (atomicity is assured on local core only)
+ ******************************************************************************/
+
+static inline int xf_atomic_test_and_set(volatile u32 *bitmap, u32 mask)
+{
+    u32     status;
+    u32     v;
+
+    /* ...atomicity is assured by interrupts masking */
+    status = XTOS_DISABLE_ALL_INTERRUPTS;
+    v = *bitmap, *bitmap = v | mask;
+    XTOS_RESTORE_INTLEVEL(status);
+    
+    return !(v & mask);
+}
+
+static inline int xf_atomic_test_and_clear(volatile u32 *bitmap, u32 mask)
+{
+    u32     status;
+    u32     v;
+
+    /* ...atomicity is assured by interrupts masking */
+    status = XTOS_DISABLE_ALL_INTERRUPTS;
+    v = *bitmap, *bitmap = v & ~mask;
+    XTOS_RESTORE_INTLEVEL(status);
+    
+    return (v & mask);
+}
+
+static inline u32 xf_atomic_set(volatile u32 *bitmap, u32 mask)
+{
+    u32     status;
+    u32     v;
+
+    /* ...atomicity is assured by interrupts masking */
+    status = XTOS_DISABLE_ALL_INTERRUPTS;
+    v = *bitmap, *bitmap = (v |= mask);
+    XTOS_RESTORE_INTLEVEL(status);
+
+    return v;
+}
+
+static inline u32 xf_atomic_clear(volatile u32 *bitmap, u32 mask)
+{
+    u32     status;
+    u32     v;
+    
+    /* ...atomicity is assured by interrupts masking */
+    status = XTOS_DISABLE_ALL_INTERRUPTS;
+    v = *bitmap, *bitmap = (v &= ~mask);
+    XTOS_RESTORE_INTLEVEL(status);
+
+    return v;
+}
+
+/*******************************************************************************
+ * Abortion macro (debugger should be configured)
+ ******************************************************************************/
+
+/* ...breakpoint function */
+extern void breakpoint(void);
+
+/* ...abort execution (enter into debugger) */
+#define __xf_abort()            breakpoint()