ceph/src/seastar/dpdk/drivers/net/xenvirt/rte_xen_lib.h

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2015 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 #ifndef _RTE_XEN_DUMMY_PMD_H
  35 #define _RTE_XEN_DUMMY_PMD_H
  36
  37 #include <stdint.h>
  38
  39 #include <rte_common.h>
  40 #include <rte_mempool.h>
  41 #include <rte_ether.h>
  42
  43 #define PAGEMAP_FNAME           "/proc/self/pagemap"
  44 #define XEN_GNTALLOC_FNAME      "/dev/xen/gntalloc"
  45 #define DPDK_XENSTORE_PATH      "/control/dpdk/"
  46 #define DPDK_XENSTORE_NODE      "/control/dpdk"
  47 /*format 0_mempool_gref = "1537,1524,1533" */
  48 #define MEMPOOL_XENSTORE_STR    "_mempool_gref"
  49 /*format 0_mempool_va = 0x80340000 */
  50 #define MEMPOOL_VA_XENSTORE_STR "_mempool_va"
  51 /*format 0_rx_vring_gref  = "1537,1524,1533" */
  52 #define RXVRING_XENSTORE_STR    "_rx_vring_gref"
  53 /*format 0_tx_vring_gref  = "1537,1524,1533" */
  54 #define TXVRING_XENSTORE_STR    "_tx_vring_gref"
  55 #define VRING_FLAG_STR          "_vring_flag"
  56 /*format: event_type_start_0 = 1*/
  57 #define EVENT_TYPE_START_STR    "event_type_start_"
  58
  59 #define DOM0_DOMID 0
  60 /*
  61  * the pfn (page frame number) are bits 0-54 (see pagemap.txt in linux
  62  * Documentation).
  63  */
  64 #define PAGEMAP_PFN_BITS        54
  65 #define PAGEMAP_PFN_MASK        RTE_LEN2MASK(PAGEMAP_PFN_BITS, phys_addr_t)
  66
  67 #define MAP_FLAG        0xA5
  68
  69 #define RTE_ETH_XENVIRT_PAIRS_DELIM ';'
  70 #define RTE_ETH_XENVIRT_KEY_VALUE_DELIM '='
  71 #define RTE_ETH_XENVIRT_MAX_ARGS 1
  72 #define RTE_ETH_XENVIRT_MAC_PARAM "mac"
  73 struct xenvirt_dict {
  74         uint8_t addr_valid;
  75         struct ether_addr addr;
  76 };
  77
  78 extern int gntalloc_fd;
  79
  80 int
  81 gntalloc_open(void);
  82
  83 void
  84 gntalloc_close(void);
  85
  86 void *
  87 gntalloc(size_t sz, uint32_t *gref, uint64_t *start_index);
  88
  89 void
  90 gntfree(void *va, size_t sz, uint64_t start_index);
  91
  92 int
  93 xenstore_init(void);
  94
  95 int
  96 xenstore_uninit(void);
  97
  98 int
  99 xenstore_write(const char *key_str, const char *val_str);
 100
 101 int
 102 get_phys_map(void *va, phys_addr_t pa[], uint32_t pg_num, uint32_t pg_sz);
 103
 104 void *
 105 get_xen_virtual(size_t size, size_t page_sz);
 106
 107 int
 108 grefwatch_from_alloc(uint32_t *gref, void **pptr);
 109
 110
 111 int grant_node_create(uint32_t pg_num, uint32_t *gref_arr, phys_addr_t *pa_arr, char *val_str, size_t str_size);
 112
 113 int
 114 grant_gntalloc_mbuf_pool(struct rte_mempool *mpool, uint32_t pg_num, uint32_t *gref_arr, phys_addr_t *pa_arr, int mempool_idx);
 115
 116 #endif