ceph/src/seastar/dpdk/lib/librte_eal/linuxapp/eal/eal_pci_init.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 #ifndef EAL_PCI_INIT_H_
  35 #define EAL_PCI_INIT_H_
  36
  37 #include "eal_vfio.h"
  38
  39 /** IO resource type: */
  40 #define IORESOURCE_IO         0x00000100
  41 #define IORESOURCE_MEM        0x00000200
  42
  43 /*
  44  * Helper function to map PCI resources right after hugepages in virtual memory
  45  */
  46 extern void *pci_map_addr;
  47 void *pci_find_max_end_va(void);
  48
  49 /* parse one line of the "resource" sysfs file (note that the 'line'
  50  * string is modified)
  51  */
  52 int pci_parse_one_sysfs_resource(char *line, size_t len, uint64_t *phys_addr,
  53         uint64_t *end_addr, uint64_t *flags);
  54
  55 int pci_uio_alloc_resource(struct rte_pci_device *dev,
  56                 struct mapped_pci_resource **uio_res);
  57 void pci_uio_free_resource(struct rte_pci_device *dev,
  58                 struct mapped_pci_resource *uio_res);
  59 int pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx,
  60                 struct mapped_pci_resource *uio_res, int map_idx);
  61
  62 int pci_uio_read_config(const struct rte_intr_handle *intr_handle,
  63                         void *buf, size_t len, off_t offs);
  64 int pci_uio_write_config(const struct rte_intr_handle *intr_handle,
  65                          const void *buf, size_t len, off_t offs);
  66
  67 int pci_uio_ioport_map(struct rte_pci_device *dev, int bar,
  68                        struct rte_pci_ioport *p);
  69 void pci_uio_ioport_read(struct rte_pci_ioport *p,
  70                          void *data, size_t len, off_t offset);
  71 void pci_uio_ioport_write(struct rte_pci_ioport *p,
  72                           const void *data, size_t len, off_t offset);
  73 int pci_uio_ioport_unmap(struct rte_pci_ioport *p);
  74
  75 #ifdef VFIO_PRESENT
  76
  77 /* access config space */
  78 int pci_vfio_read_config(const struct rte_intr_handle *intr_handle,
  79                          void *buf, size_t len, off_t offs);
  80 int pci_vfio_write_config(const struct rte_intr_handle *intr_handle,
  81                           const void *buf, size_t len, off_t offs);
  82
  83 int pci_vfio_ioport_map(struct rte_pci_device *dev, int bar,
  84                         struct rte_pci_ioport *p);
  85 void pci_vfio_ioport_read(struct rte_pci_ioport *p,
  86                           void *data, size_t len, off_t offset);
  87 void pci_vfio_ioport_write(struct rte_pci_ioport *p,
  88                            const void *data, size_t len, off_t offset);
  89 int pci_vfio_ioport_unmap(struct rte_pci_ioport *p);
  90
  91 /* map/unmap VFIO resource prototype */
  92 int pci_vfio_map_resource(struct rte_pci_device *dev);
  93 int pci_vfio_unmap_resource(struct rte_pci_device *dev);
  94
  95 #endif
  96
  97 #endif /* EAL_PCI_INIT_H_ */