/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
+ * Copyright(c) 2010-2019 Intel Corporation
*/
#ifndef _RTE_COMMON_H_
#include <rte_config.h>
+/* OS specific include */
+#include <rte_os.h>
+
#ifndef typeof
#define typeof __typeof__
#endif
#define RTE_STD_C11
#endif
-/** Define GCC_VERSION **/
-#ifdef RTE_TOOLCHAIN_GCC
+/*
+ * RTE_TOOLCHAIN_GCC is defined if the target is built with GCC,
+ * while a host application (like pmdinfogen) may have another compiler.
+ * RTE_CC_IS_GNU is true if the file is compiled with GCC,
+ * no matter it is a target or host application.
+ */
+#define RTE_CC_IS_GNU 0
+#if defined __clang__
+#define RTE_CC_CLANG
+#elif defined __INTEL_COMPILER
+#define RTE_CC_ICC
+#elif defined __GNUC__
+#define RTE_CC_GCC
+#undef RTE_CC_IS_GNU
+#define RTE_CC_IS_GNU 1
+#endif
+#if RTE_CC_IS_GNU
#define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + \
__GNUC_PATCHLEVEL__)
#endif
*/
#define RTE_SET_USED(x) (void)(x)
+/**
+ * Check format string and its arguments at compile-time.
+ *
+ * GCC on Windows assumes MS-specific format string by default,
+ * even if the underlying stdio implementation is ANSI-compliant,
+ * so this must be overridden.
+ */
+#if RTE_CC_IS_GNU
+#define __rte_format_printf(format_index, first_arg) \
+ __attribute__((format(gnu_printf, format_index, first_arg)))
+#else
+#define __rte_format_printf(format_index, first_arg) \
+ __attribute__((format(printf, format_index, first_arg)))
+#endif
+
#define RTE_PRIORITY_LOG 101
#define RTE_PRIORITY_BUS 110
#define RTE_PRIORITY_CLASS 120
* Priority number must be above 100.
* Lowest number is the first to run.
*/
+#ifndef RTE_INIT_PRIO /* Allow to override from EAL */
#define RTE_INIT_PRIO(func, prio) \
static void __attribute__((constructor(RTE_PRIO(prio)), used)) func(void)
+#endif
/**
* Run function before main() with low priority.
* Priority number must be above 100.
* Lowest number is the last to run.
*/
+#ifndef RTE_FINI_PRIO /* Allow to override from EAL */
#define RTE_FINI_PRIO(func, prio) \
static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
+#endif
/**
* Run after main() with high priority.
*/
#define RTE_BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+/*********** Cache line related macros ********/
+
+/** Cache line mask. */
+#define RTE_CACHE_LINE_MASK (RTE_CACHE_LINE_SIZE-1)
+
+/** Return the first cache-aligned value greater or equal to size. */
+#define RTE_CACHE_LINE_ROUNDUP(size) \
+ (RTE_CACHE_LINE_SIZE * ((size + RTE_CACHE_LINE_SIZE - 1) / \
+ RTE_CACHE_LINE_SIZE))
+
+/** Cache line size in terms of log2 */
+#if RTE_CACHE_LINE_SIZE == 64
+#define RTE_CACHE_LINE_SIZE_LOG2 6
+#elif RTE_CACHE_LINE_SIZE == 128
+#define RTE_CACHE_LINE_SIZE_LOG2 7
+#else
+#error "Unsupported cache line size"
+#endif
+
+/** Minimum Cache line size. */
+#define RTE_CACHE_LINE_MIN_SIZE 64
+
+/** Force alignment to cache line. */
+#define __rte_cache_aligned __rte_aligned(RTE_CACHE_LINE_SIZE)
+
+/** Force minimum cache line alignment. */
+#define __rte_cache_min_aligned __rte_aligned(RTE_CACHE_LINE_MIN_SIZE)
+
+/*********** PA/IOVA type definitions ********/
+
+/** Physical address */
+typedef uint64_t phys_addr_t;
+#define RTE_BAD_PHYS_ADDR ((phys_addr_t)-1)
+
+/**
+ * IO virtual address type.
+ * When the physical addressing mode (IOVA as PA) is in use,
+ * the translation from an IO virtual address (IOVA) to a physical address
+ * is a direct mapping, i.e. the same value.
+ * Otherwise, in virtual mode (IOVA as VA), an IOMMU may do the translation.
+ */
+typedef uint64_t rte_iova_t;
+#define RTE_BAD_IOVA ((rte_iova_t)-1)
+
+/*********** Structure alignment markers ********/
+
+/** Generic marker for any place in a structure. */
+__extension__ typedef void *RTE_MARKER[0];
+/** Marker for 1B alignment in a structure. */
+__extension__ typedef uint8_t RTE_MARKER8[0];
+/** Marker for 2B alignment in a structure. */
+__extension__ typedef uint16_t RTE_MARKER16[0];
+/** Marker for 4B alignment in a structure. */
+__extension__ typedef uint32_t RTE_MARKER32[0];
+/** Marker for 8B alignment in a structure. */
+__extension__ typedef uint64_t RTE_MARKER64[0];
+
/**
* Combines 32b inputs most significant set bits into the least
* significant bits to construct a value with the same MSBs as x
* Aligns input parameter to the next power of 2
*
* @param x
- * The integer value to algin
+ * The integer value to align
*
* @return
* Input parameter aligned to the next power of 2
* Aligns input parameter to the previous power of 2
*
* @param x
- * The integer value to algin
+ * The integer value to align
*
* @return
* Input parameter aligned to the previous power of 2
/**
* Return the rounded-up log2 of a integer.
*
+ * @note Contrary to the logarithm mathematical operation,
+ * rte_log2_u32(0) == 0 and not -inf.
+ *
* @param v
* The input parameter.
* @return
/**
* Return the rounded-up log2 of a 64-bit integer.
*
+ * @note Contrary to the logarithm mathematical operation,
+ * rte_log2_u64(0) == 0 and not -inf.
+ *
* @param v
* The input parameter.
* @return
})
#endif
+/**
+ * Get the size of a field in a structure.
+ *
+ * @param type
+ * The type of the structure.
+ * @param field
+ * The field in the structure.
+ * @return
+ * The size of the field in the structure, in bytes.
+ */
+#define RTE_SIZEOF_FIELD(type, field) (sizeof(((type *)0)->field))
+
#define _RTE_STR(x) #x
/** Take a macro value and get a string version of it */
#define RTE_STR(x) _RTE_STR(x)
void
rte_exit(int exit_code, const char *format, ...)
__attribute__((noreturn))
- __attribute__((format(printf, 2, 3)));
+ __rte_format_printf(2, 3);
#ifdef __cplusplus
}