diff options
Diffstat (limited to 'lib/pci.h')
-rw-r--r-- | lib/pci.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/lib/pci.h b/lib/pci.h new file mode 100644 index 0000000..8678902 --- /dev/null +++ b/lib/pci.h @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2019 Nutanix Inc. All rights reserved. + * + * Authors: Thanos Makatos <thanos@nutanix.com> + * Swapnil Ingle <swapnil.ingle@nutanix.com> + * Felipe Franciosi <felipe@nutanix.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Nutanix nor the names of its contributors may be + * used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + */ + +#ifndef LIB_VFIO_USER_PCI_H +#define LIB_VFIO_USER_PCI_H + +#include "libvfio-user.h" +#include "private.h" + +static inline bool +pci_is_hdr_access(uint64_t pos) +{ + const uint64_t off = region_to_offset(VFU_PCI_DEV_CFG_REGION_IDX); + return pos >= off && pos - off < PCI_STD_HEADER_SIZEOF; +} + +int +pci_hdr_access(vfu_ctx_t *vfu_ctx, uint32_t *count, + uint64_t *pos, bool is_write, char *buf); + +ssize_t +pci_config_space_access(vfu_ctx_t *vfu_ctx, char *buf, size_t count, + loff_t pos, bool is_write); + +#endif /* LIB_VFIO_USER_PCI_H */ + +/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */ |