-/*
- * BSD LICENSE
- *
- * Copyright(c) 2015 RehiveTech. 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 RehiveTech 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2015 RehiveTech. All rights reserved.
*/
#ifndef _RTE_CPUFLAGS_ARM32_H_
extern "C" {
#endif
-#include <elf.h>
-#include <fcntl.h>
-#include <assert.h>
-#include <unistd.h>
-
-#include "generic/rte_cpuflags.h"
-
-#ifndef AT_HWCAP
-#define AT_HWCAP 16
-#endif
-
-#ifndef AT_HWCAP2
-#define AT_HWCAP2 26
-#endif
-
-/* software based registers */
-enum cpu_register_t {
- REG_HWCAP = 0,
- REG_HWCAP2,
-};
-
/**
* Enumeration of all CPU features supported
*/
RTE_CPUFLAG_SHA1,
RTE_CPUFLAG_SHA2,
RTE_CPUFLAG_CRC32,
+ RTE_CPUFLAG_V7L,
/* The last item */
RTE_CPUFLAG_NUMFLAGS,/**< This should always be the last! */
};
-static const struct feature_entry cpu_feature_table[] = {
- FEAT_DEF(SWP, 0x00000001, 0, REG_HWCAP, 0)
- FEAT_DEF(HALF, 0x00000001, 0, REG_HWCAP, 1)
- FEAT_DEF(THUMB, 0x00000001, 0, REG_HWCAP, 2)
- FEAT_DEF(A26BIT, 0x00000001, 0, REG_HWCAP, 3)
- FEAT_DEF(FAST_MULT, 0x00000001, 0, REG_HWCAP, 4)
- FEAT_DEF(FPA, 0x00000001, 0, REG_HWCAP, 5)
- FEAT_DEF(VFP, 0x00000001, 0, REG_HWCAP, 6)
- FEAT_DEF(EDSP, 0x00000001, 0, REG_HWCAP, 7)
- FEAT_DEF(JAVA, 0x00000001, 0, REG_HWCAP, 8)
- FEAT_DEF(IWMMXT, 0x00000001, 0, REG_HWCAP, 9)
- FEAT_DEF(CRUNCH, 0x00000001, 0, REG_HWCAP, 10)
- FEAT_DEF(THUMBEE, 0x00000001, 0, REG_HWCAP, 11)
- FEAT_DEF(NEON, 0x00000001, 0, REG_HWCAP, 12)
- FEAT_DEF(VFPv3, 0x00000001, 0, REG_HWCAP, 13)
- FEAT_DEF(VFPv3D16, 0x00000001, 0, REG_HWCAP, 14)
- FEAT_DEF(TLS, 0x00000001, 0, REG_HWCAP, 15)
- FEAT_DEF(VFPv4, 0x00000001, 0, REG_HWCAP, 16)
- FEAT_DEF(IDIVA, 0x00000001, 0, REG_HWCAP, 17)
- FEAT_DEF(IDIVT, 0x00000001, 0, REG_HWCAP, 18)
- FEAT_DEF(VFPD32, 0x00000001, 0, REG_HWCAP, 19)
- FEAT_DEF(LPAE, 0x00000001, 0, REG_HWCAP, 20)
- FEAT_DEF(EVTSTRM, 0x00000001, 0, REG_HWCAP, 21)
- FEAT_DEF(AES, 0x00000001, 0, REG_HWCAP2, 0)
- FEAT_DEF(PMULL, 0x00000001, 0, REG_HWCAP2, 1)
- FEAT_DEF(SHA1, 0x00000001, 0, REG_HWCAP2, 2)
- FEAT_DEF(SHA2, 0x00000001, 0, REG_HWCAP2, 3)
- FEAT_DEF(CRC32, 0x00000001, 0, REG_HWCAP2, 4)
-};
-
-/*
- * Read AUXV software register and get cpu features for ARM
- */
-static inline void
-rte_cpu_get_features(__attribute__((unused)) uint32_t leaf,
- __attribute__((unused)) uint32_t subleaf, cpuid_registers_t out)
-{
- int auxv_fd;
- Elf32_auxv_t auxv;
-
- auxv_fd = open("/proc/self/auxv", O_RDONLY);
- assert(auxv_fd);
- while (read(auxv_fd, &auxv,
- sizeof(Elf32_auxv_t)) == sizeof(Elf32_auxv_t)) {
- if (auxv.a_type == AT_HWCAP)
- out[REG_HWCAP] = auxv.a_un.a_val;
- else if (auxv.a_type == AT_HWCAP2)
- out[REG_HWCAP2] = auxv.a_un.a_val;
- }
-}
-
-/*
- * Checks if a particular flag is available on current machine.
- */
-static inline int
-rte_cpu_get_flag_enabled(enum rte_cpu_flag_t feature)
-{
- const struct feature_entry *feat;
- cpuid_registers_t regs = {0};
-
- if (feature >= RTE_CPUFLAG_NUMFLAGS)
- /* Flag does not match anything in the feature tables */
- return -ENOENT;
-
- feat = &cpu_feature_table[feature];
-
- if (!feat->leaf)
- /* This entry in the table wasn't filled out! */
- return -EFAULT;
-
- /* get the cpuid leaf containing the desired feature */
- rte_cpu_get_features(feat->leaf, feat->subleaf, regs);
-
- /* check if the feature is enabled */
- return (regs[feat->reg] >> feat->bit) & 1;
-}
+#include "generic/rte_cpuflags.h"
#ifdef __cplusplus
}
git.droids-corp.org / dpdk.git / blobdiff