[dpdk-dev] [PATCH v2 09/12] eal/tile: add CPU flags operations for TileGx

[Zhigang Lu <zlu@ezchip.com>]

This patch adds empty functions for CPU flags operations to support DPDK,
since tile processor doesn't have CPU flag hardware registers.

Signed-off-by: Zhigang Lu <zlu@ezchip.com>
Signed-off-by: Cyril Chemparathy <cchemparathy@ezchip.com>
---
 .../common/include/arch/tile/rte_cpuflags.h        | 78 ++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 lib/librte_eal/common/include/arch/tile/rte_cpuflags.h

diff --git a/lib/librte_eal/common/include/arch/tile/rte_cpuflags.h b/lib/librte_eal/common/include/arch/tile/rte_cpuflags.h
new file mode 100644
index 0000000..872e38c
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/tile/rte_cpuflags.h
@@ -0,0 +1,78 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2014 Tilera Corporation. All rights reserved.
+ *   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 Tilera 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.
+ */
+
+#ifndef _RTE_CPUFLAGS_TILE_H_
+#define _RTE_CPUFLAGS_TILE_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+#include <rte_common.h>
+
+#include "generic/rte_cpuflags.h"
+
+enum rte_cpu_flag_t {
+	RTE_CPUFLAG_SSE4_1 = 0,             /**< SSE4_1 */
+	/* The last item */
+	RTE_CPUFLAG_NUMFLAGS,	/**< This should always be the last! */
+};
+
+static const struct feature_entry cpu_feature_table[] = {
+	FEAT_DEF(SSE4_1, 0x00000000, 0, 0, 0)
+};
+
+static inline void
+rte_cpu_get_features(__rte_unused uint32_t leaf,
+		     __rte_unused uint32_t subleaf,
+		     __rte_unused cpuid_registers_t out)
+{
+}
+
+static inline int
+rte_cpu_get_flag_enabled(__rte_unused enum rte_cpu_flag_t feature)
+{
+	if (feature >= RTE_CPUFLAG_NUMFLAGS)
+		/* Flag does not match anything in the feature tables */
+		return -ENOENT;
+
+	return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_CPUFLAGS_TILE_H_ */
-- 
2.1.2