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 <linux/version.h> 38 39 #include <rte_vfio.h> 40 41 /** IO resource type: */ 42 #define IORESOURCE_IO 0x00000100 43 #define IORESOURCE_MEM 0x00000200 44 45 /* 46 * Helper function to map PCI resources right after hugepages in virtual memory 47 */ 48 extern void *pci_map_addr; 49 void *pci_find_max_end_va(void); 50 51 /* parse one line of the "resource" sysfs file (note that the 'line' 52 * string is modified) 53 */ 54 int pci_parse_one_sysfs_resource(char *line, size_t len, uint64_t *phys_addr, 55 uint64_t *end_addr, uint64_t *flags); 56 57 int pci_uio_alloc_resource(struct rte_pci_device *dev, 58 struct mapped_pci_resource **uio_res); 59 void pci_uio_free_resource(struct rte_pci_device *dev, 60 struct mapped_pci_resource *uio_res); 61 int pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx, 62 struct mapped_pci_resource *uio_res, int map_idx); 63 64 int pci_uio_read_config(const struct rte_intr_handle *intr_handle, 65 void *buf, size_t len, off_t offs); 66 int pci_uio_write_config(const struct rte_intr_handle *intr_handle, 67 const void *buf, size_t len, off_t offs); 68 69 int pci_uio_ioport_map(struct rte_pci_device *dev, int bar, 70 struct rte_pci_ioport *p); 71 void pci_uio_ioport_read(struct rte_pci_ioport *p, 72 void *data, size_t len, off_t offset); 73 void pci_uio_ioport_write(struct rte_pci_ioport *p, 74 const void *data, size_t len, off_t offset); 75 int pci_uio_ioport_unmap(struct rte_pci_ioport *p); 76 77 #ifdef RTE_EAL_VFIO 78 79 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0) 80 #define RTE_PCI_MSIX_TABLE_BIR 0x7 81 #define RTE_PCI_MSIX_TABLE_OFFSET 0xfffffff8 82 #define RTE_PCI_MSIX_FLAGS_QSIZE 0x07ff 83 #else 84 #define RTE_PCI_MSIX_TABLE_BIR PCI_MSIX_TABLE_BIR 85 #define RTE_PCI_MSIX_TABLE_OFFSET PCI_MSIX_TABLE_OFFSET 86 #define RTE_PCI_MSIX_FLAGS_QSIZE PCI_MSIX_FLAGS_QSIZE 87 #endif 88 89 /* access config space */ 90 int pci_vfio_read_config(const struct rte_intr_handle *intr_handle, 91 void *buf, size_t len, off_t offs); 92 int pci_vfio_write_config(const struct rte_intr_handle *intr_handle, 93 const void *buf, size_t len, off_t offs); 94 95 int pci_vfio_ioport_map(struct rte_pci_device *dev, int bar, 96 struct rte_pci_ioport *p); 97 void pci_vfio_ioport_read(struct rte_pci_ioport *p, 98 void *data, size_t len, off_t offset); 99 void pci_vfio_ioport_write(struct rte_pci_ioport *p, 100 const void *data, size_t len, off_t offset); 101 int pci_vfio_ioport_unmap(struct rte_pci_ioport *p); 102 103 /* map/unmap VFIO resource prototype */ 104 int pci_vfio_map_resource(struct rte_pci_device *dev); 105 int pci_vfio_unmap_resource(struct rte_pci_device *dev); 106 107 int pci_vfio_is_enabled(void); 108 109 #endif 110 111 #endif /* EAL_PCI_INIT_H_ */ 112