eal_pci_init.h revision a41e6ff1
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 */
46extern void *pci_map_addr;
47void *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 */
52int pci_parse_one_sysfs_resource(char *line, size_t len, uint64_t *phys_addr,
53	uint64_t *end_addr, uint64_t *flags);
54
55int pci_uio_alloc_resource(struct rte_pci_device *dev,
56		struct mapped_pci_resource **uio_res);
57void pci_uio_free_resource(struct rte_pci_device *dev,
58		struct mapped_pci_resource *uio_res);
59int 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
62int pci_uio_read_config(const struct rte_intr_handle *intr_handle,
63			void *buf, size_t len, off_t offs);
64int pci_uio_write_config(const struct rte_intr_handle *intr_handle,
65			 const void *buf, size_t len, off_t offs);
66
67int pci_uio_ioport_map(struct rte_pci_device *dev, int bar,
68		       struct rte_pci_ioport *p);
69void pci_uio_ioport_read(struct rte_pci_ioport *p,
70			 void *data, size_t len, off_t offset);
71void pci_uio_ioport_write(struct rte_pci_ioport *p,
72			  const void *data, size_t len, off_t offset);
73int pci_uio_ioport_unmap(struct rte_pci_ioport *p);
74
75#ifdef VFIO_PRESENT
76
77/* access config space */
78int pci_vfio_read_config(const struct rte_intr_handle *intr_handle,
79			 void *buf, size_t len, off_t offs);
80int pci_vfio_write_config(const struct rte_intr_handle *intr_handle,
81			  const void *buf, size_t len, off_t offs);
82
83int pci_vfio_ioport_map(struct rte_pci_device *dev, int bar,
84		        struct rte_pci_ioport *p);
85void pci_vfio_ioport_read(struct rte_pci_ioport *p,
86			  void *data, size_t len, off_t offset);
87void pci_vfio_ioport_write(struct rte_pci_ioport *p,
88			   const void *data, size_t len, off_t offset);
89int pci_vfio_ioport_unmap(struct rte_pci_ioport *p);
90
91/* map VFIO resource prototype */
92int pci_vfio_map_resource(struct rte_pci_device *dev);
93
94#endif
95
96#endif /* EAL_PCI_INIT_H_ */
97