diff options
| author | Fam Zheng <famz@redhat.com> | 2018-01-16 14:08:54 +0800 |
|---|---|---|
| committer | Fam Zheng <famz@redhat.com> | 2018-02-08 09:22:03 +0800 |
| commit | 418026ca43bc2626db092d7558258f9594366f28 (patch) | |
| tree | ac9cd6057c69d588f076e24704e42719479e9535 /include | |
| parent | a37eaa53f9fefba9dd938371cbe3b5db22d8b787 (diff) | |
util: Introduce vfio helpers
This is a library to manage the host vfio interface, which could be used
to implement userspace device driver code in QEMU such as NVMe or net
controllers.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20180116060901.17413-3-famz@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/qemu/vfio-helpers.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/qemu/vfio-helpers.h b/include/qemu/vfio-helpers.h new file mode 100644 index 0000000000..ce7e7b057f --- /dev/null +++ b/include/qemu/vfio-helpers.h @@ -0,0 +1,33 @@ +/* + * QEMU VFIO helpers + * + * Copyright 2016 - 2018 Red Hat, Inc. + * + * Authors: + * Fam Zheng <famz@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_VFIO_HELPERS_H +#define QEMU_VFIO_HELPERS_H +#include "qemu/typedefs.h" + +typedef struct QEMUVFIOState QEMUVFIOState; + +QEMUVFIOState *qemu_vfio_open_pci(const char *device, Error **errp); +void qemu_vfio_close(QEMUVFIOState *s); +int qemu_vfio_dma_map(QEMUVFIOState *s, void *host, size_t size, + bool temporary, uint64_t *iova_list); +int qemu_vfio_dma_reset_temporary(QEMUVFIOState *s); +void qemu_vfio_dma_unmap(QEMUVFIOState *s, void *host); +void *qemu_vfio_pci_map_bar(QEMUVFIOState *s, int index, + uint64_t offset, uint64_t size, + Error **errp); +void qemu_vfio_pci_unmap_bar(QEMUVFIOState *s, int index, void *bar, + uint64_t offset, uint64_t size); +int qemu_vfio_pci_init_irq(QEMUVFIOState *s, EventNotifier *e, + int irq_type, Error **errp); + +#endif |