Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 209 insertions, 0 deletions

diff --git a/src/spdk/intel-ipsec-mb/LibPerfApp/msr.c b/src/spdk/intel-ipsec-mb/LibPerfApp/msr.c
new file mode 100644
index 00000000..34ee4973
--- /dev/null
+++ b/src/spdk/intel-ipsec-mb/LibPerfApp/msr.c
@@ -0,0 +1,209 @@
+/**********************************************************************
+  Copyright(c) 2018 Intel 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 Intel 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.
+**********************************************************************/
+
+/**
+ * @brief Provides access to MSR read & write operations
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifndef _WIN32
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#endif
+
+#include "msr.h"
+
+static int *m_msr_fd = NULL;           /**< MSR driver file descriptors table */
+static unsigned m_maxcores = 0;        /**< max number of cores (size of the
+                                          table above too) */
+
+int
+machine_init(const unsigned max_core_id)
+{
+#ifndef _WIN32
+        unsigned i;
+
+        if (max_core_id == 0)
+                return MACHINE_RETVAL_PARAM;
+
+        m_maxcores = max_core_id + 1;
+
+        /**
+         * Allocate table to hold MSR driver file descriptors
+         * Each file descriptor is for a different core.
+         * Core id is an index to the table.
+         */
+        m_msr_fd = (int *)malloc(m_maxcores * sizeof(m_msr_fd[0]));
+        if (m_msr_fd == NULL) {
+                m_maxcores = 0;
+                return MACHINE_RETVAL_ERROR;
+        }
+
+        for (i = 0; i < m_maxcores; i++)
+                m_msr_fd[i] = -1;
+#endif /* _WIN32 */
+        return MACHINE_RETVAL_OK;
+}
+
+int
+machine_fini(void)
+{
+#ifndef _WIN32
+        unsigned i;
+
+        ASSERT(m_msr_fd != NULL);
+        if (m_msr_fd == NULL)
+                return MACHINE_RETVAL_ERROR;
+
+        /**
+         * Close open file descriptors and free up table memory.
+         */
+        for (i = 0; i < m_maxcores; i++)
+                if (m_msr_fd[i] != -1) {
+                        close(m_msr_fd[i]);
+                        m_msr_fd[i] = -1;
+                }
+
+        free(m_msr_fd);
+        m_msr_fd = NULL;
+        m_maxcores = 0;
+#endif /* _WIN32 */
+        return MACHINE_RETVAL_OK;
+}
+
+#ifndef _WIN32
+/**
+ * @brief Returns MSR driver file descriptor for given core id
+ *
+ * File descriptor could be previously open and comes from
+ * m_msr_fd table or is open (& cached) during the call.
+ *
+ * @param lcore logical core id
+ *
+ * @return MSR driver file descriptor corresponding \a lcore
+ */
+static int
+msr_file_open(const unsigned lcore)
+{
+        ASSERT(lcore < m_maxcores);
+        ASSERT(m_msr_fd != NULL);
+
+        int fd = m_msr_fd[lcore];
+
+        if (fd < 0) {
+                char fname[32];
+
+                memset(fname, 0, sizeof(fname));
+                snprintf(fname, sizeof(fname)-1,
+                         "/dev/cpu/%u/msr", lcore);
+                fd = open(fname, O_RDWR);
+                if (fd < 0)
+                        fprintf(stderr, "Error opening file '%s'!\n", fname);
+                else
+                        m_msr_fd[lcore] = fd;
+        }
+
+        return fd;
+}
+#endif /* _WIN32 */
+
+int
+msr_read(const unsigned lcore,
+         const uint32_t reg,
+         uint64_t *value)
+{
+        int ret = MACHINE_RETVAL_OK;
+#ifndef _WIN32
+        int fd = -1;
+        ssize_t read_ret = 0;
+
+        ASSERT(value != NULL);
+        if (value == NULL)
+                return MACHINE_RETVAL_PARAM;
+
+        ASSERT(lcore < m_maxcores);
+        if (lcore >= m_maxcores)
+                return MACHINE_RETVAL_PARAM;
+
+        ASSERT(m_msr_fd != NULL);
+        if (m_msr_fd == NULL)
+                return MACHINE_RETVAL_ERROR;
+
+        fd = msr_file_open(lcore);
+        if (fd < 0)
+                return MACHINE_RETVAL_ERROR;
+
+        read_ret = pread(fd, value, sizeof(value[0]), (off_t)reg);
+
+        if (read_ret != sizeof(value[0])) {
+                fprintf(stderr, "RDMSR failed for reg[0x%x] on lcore %u\n",
+                        (unsigned)reg, lcore);
+                ret = MACHINE_RETVAL_ERROR;
+        }
+#endif /* _WIN32 */
+        return ret;
+}
+
+int
+msr_write(const unsigned lcore,
+          const uint32_t reg,
+          const uint64_t value)
+{
+        int ret = MACHINE_RETVAL_OK;
+#ifndef _WIN32
+        int fd = -1;
+        ssize_t write_ret = 0;
+
+        ASSERT(lcore < m_maxcores);
+        if (lcore >= m_maxcores)
+                return MACHINE_RETVAL_PARAM;
+
+        ASSERT(m_msr_fd != NULL);
+        if (m_msr_fd == NULL)
+                return MACHINE_RETVAL_ERROR;
+
+        fd = msr_file_open(lcore);
+        if (fd < 0)
+                return MACHINE_RETVAL_ERROR;
+
+        write_ret = pwrite(fd, &value, sizeof(value), (off_t)reg);
+
+        if (write_ret != sizeof(value)) {
+                fprintf(stderr, "WRMSR failed for reg[0x%x] "
+                        "<- value[0x%llx] on lcore %u\n",
+                        (unsigned)reg, (unsigned long long)value, lcore);
+                ret = MACHINE_RETVAL_ERROR;
+        }
+#endif /* _WIN32 */
+        return ret;
+}