ceph/src/dpdk/lib/librte_eal/common/eal_internal_cfg.h

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 /**
  35  * @file
  36  * Holds the structures for the eal internal configuration
  37  */
  38
  39 #ifndef EAL_INTERNAL_CFG_H
  40 #define EAL_INTERNAL_CFG_H
  41
  42 #include <rte_eal.h>
  43 #include <rte_pci_dev_feature_defs.h>
  44
  45 #define MAX_HUGEPAGE_SIZES 3  /**< support up to 3 page sizes */
  46
  47 /*
  48  * internal configuration structure for the number, size and
  49  * mount points of hugepages
  50  */
  51 struct hugepage_info {
  52         uint64_t hugepage_sz;   /**< size of a huge page */
  53         const char *hugedir;    /**< dir where hugetlbfs is mounted */
  54         uint32_t num_pages[RTE_MAX_NUMA_NODES];
  55                                 /**< number of hugepages of that size on each socket */
  56         int lock_descriptor;    /**< file descriptor for hugepage dir */
  57 };
  58
  59 /**
  60  * internal configuration
  61  */
  62 struct internal_config {
  63         volatile size_t memory;           /**< amount of asked memory */
  64         volatile unsigned force_nchannel; /**< force number of channels */
  65         volatile unsigned force_nrank;    /**< force number of ranks */
  66         volatile unsigned no_hugetlbfs;   /**< true to disable hugetlbfs */
  67         unsigned hugepage_unlink;         /**< true to unlink backing files */
  68         volatile unsigned xen_dom0_support; /**< support app running on Xen Dom0*/
  69         volatile unsigned no_pci;         /**< true to disable PCI */
  70         volatile unsigned no_hpet;        /**< true to disable HPET */
  71         volatile unsigned vmware_tsc_map; /**< true to use VMware TSC mapping
  72                                                                                 * instead of native TSC */
  73         volatile unsigned no_shconf;      /**< true if there is no shared config */
  74         volatile unsigned create_uio_dev; /**< true to create /dev/uioX devices */
  75         volatile enum rte_proc_type_t process_type; /**< multi-process proc type */
  76         /** true to try allocating memory on specific sockets */
  77         volatile unsigned force_sockets;
  78         volatile uint64_t socket_mem[RTE_MAX_NUMA_NODES]; /**< amount of memory per socket */
  79         uintptr_t base_virtaddr;          /**< base address to try and reserve memory from */
  80         volatile int syslog_facility;     /**< facility passed to openlog() */
  81         volatile uint32_t log_level;      /**< default log level */
  82         /** default interrupt mode for VFIO */
  83         volatile enum rte_intr_mode vfio_intr_mode;
  84         const char *hugefile_prefix;      /**< the base filename of hugetlbfs files */
  85         const char *hugepage_dir;         /**< specific hugetlbfs directory to use */
  86
  87         unsigned num_hugepage_sizes;      /**< how many sizes on this system */
  88         struct hugepage_info hugepage_info[MAX_HUGEPAGE_SIZES];
  89 };
  90 extern struct internal_config internal_config; /**< Global EAL configuration. */
  91
  92 void eal_reset_internal_config(struct internal_config *internal_cfg);
  93
  94 #endif /* EAL_INTERNAL_CFG_H */