eal/windows: implement basic memory management

[dpdk.git] / lib / librte_eal / windows / eal_windows.h

diff --git a/lib/librte_eal/windows/eal_windows.h b/lib/librte_eal/windows/eal_windows.h
index 96f97e5..d48ee0a 100644 (file)
--- a/lib/librte_eal/windows/eal_windows.h
+++ b/lib/librte_eal/windows/eal_windows.h
@@ -12,6 +12,21 @@
 #include <rte_errno.h>
 #include <rte_windows.h>
 
+/**
+ * Log current function as not implemented and set rte_errno.
+ */
+#define EAL_LOG_NOT_IMPLEMENTED() \
+       do { \
+               RTE_LOG(DEBUG, EAL, "%s() is not implemented\n", __func__); \
+               rte_errno = ENOTSUP; \
+       } while (0)
+
+/**
+ * Log current function as a stub.
+ */
+#define EAL_LOG_STUB() \
+       RTE_LOG(DEBUG, EAL, "Windows: %s() is a stub\n", __func__)
+
 /**
  * Create a map of processors and cores on the system.
  *
@@ -40,4 +55,63 @@ int eal_thread_create(pthread_t *thread);
  */
 unsigned int eal_socket_numa_node(unsigned int socket_id);
 
+/**
+ * Open virt2phys driver interface device.
+ *
+ * @return 0 on success, (-1) on failure.
+ */
+int eal_mem_virt2iova_init(void);
+
+/**
+ * Locate Win32 memory management routines in system libraries.
+ *
+ * @return 0 on success, (-1) on failure.
+ */
+int eal_mem_win32api_init(void);
+
+/**
+ * Allocate new memory in hugepages on the specified NUMA node.
+ *
+ * @param size
+ *  Number of bytes to allocate. Must be a multiple of huge page size.
+ * @param socket_id
+ *  Socket ID.
+ * @return
+ *  Address of the memory allocated on success or NULL on failure.
+ */
+void *eal_mem_alloc_socket(size_t size, int socket_id);
+
+/**
+ * Commit memory previously reserved with eal_mem_reserve()
+ * or decommitted from hugepages by eal_mem_decommit().
+ *
+ * @param requested_addr
+ *  Address within a reserved region. Must not be NULL.
+ * @param size
+ *  Number of bytes to commit. Must be a multiple of page size.
+ * @param socket_id
+ *  Socket ID to allocate on. Can be SOCKET_ID_ANY.
+ * @return
+ *  On success, address of the committed memory, that is, requested_addr.
+ *  On failure, NULL and rte_errno is set.
+ */
+void *eal_mem_commit(void *requested_addr, size_t size, int socket_id);
+
+/**
+ * Put allocated or committed memory back into reserved state.
+ *
+ * @param addr
+ *  Address of the region to decommit.
+ * @param size
+ *  Number of bytes to decommit, must be the size of a page
+ *  (hugepage or regular one).
+ *
+ * The *addr* and *size* must match location and size
+ * of a previously allocated or committed region.
+ *
+ * @return
+ *  0 on success, (-1) on failure.
+ */
+int eal_mem_decommit(void *addr, size_t size);
+
 #endif /* _EAL_WINDOWS_H_ */