/*-
* BSD LICENSE
- *
+ *
* Copyright(c) 2010-2014 Intel 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
* * 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
#define __rte_cache_aligned __attribute__((__aligned__(CACHE_LINE_SIZE)))
typedef uint64_t phys_addr_t; /**< Physical address definition. */
+#define RTE_BAD_PHYS_ADDR ((phys_addr_t)-1)
/**
* Physical memory segment descriptor.
uint32_t nrank; /**< Number of ranks. */
#ifdef RTE_LIBRTE_XEN_DOM0
/**< store segment MFNs */
- uint64_t mfn[DOM0_NUM_MEMBLOCK];
+ uint64_t mfn[DOM0_NUM_MEMBLOCK];
#endif
} __attribute__((__packed__));
+/**
+ * Lock page in physical memory and prevent from swapping.
+ *
+ * @param virt
+ * The virtual address.
+ * @return
+ * 0 on success, negative on error.
+ */
+int rte_mem_lock_page(const void *virt);
+
+/**
+ * Get physical address of any mapped virtual address in the current process.
+ * It is found by browsing the /proc/self/pagemap special file.
+ * The page must be locked.
+ *
+ * @param virt
+ * The virtual address.
+ * @return
+ * The physical address or RTE_BAD_PHYS_ADDR on error.
+ */
+phys_addr_t rte_mem_virt2phy(const void *virt);
/**
* Get the layout of the available physical memory.
/**
* Dump the physical memory layout to the console.
+ *
+ * @param f
+ * A pointer to a file for output
*/
-void rte_dump_physmem_layout(void);
+void rte_dump_physmem_layout(FILE *f);
/**
* Get the total amount of available physical memory.
/**
* Return the physical address of elt, which is an element of the pool mp.
*
- * @param memseg_id
+ * @param memseg_id
* The mempool is from which memory segment.
* @param phy_addr
* physical address of elt.
phys_addr_t rte_mem_phy2mch(uint32_t memseg_id, const phys_addr_t phy_addr);
/**
- * Memory init for supporting application running on Xen domain0.
- *
- * @param void
- *
- * @return
+ * Memory init for supporting application running on Xen domain0.
+ *
+ * @param void
+ *
+ * @return
* 0: successfully
* negative: error
- */
+ */
int rte_xen_dom0_memory_init(void);
/**
- * Attach to memory setments of primary process on Xen domain0.
- *
- * @param void
- *
- * @return
+ * Attach to memory setments of primary process on Xen domain0.
+ *
+ * @param void
+ *
+ * @return
* 0: successfully
* negative: error
*/