diff options
author | Oleksandr Suvorov <oleksandr.suvorov@toradex.com> | 2020-03-26 12:44:27 +0200 |
---|---|---|
committer | Oleksandr Suvorov <oleksandr.suvorov@toradex.com> | 2020-03-26 12:46:50 +0200 |
commit | 87d308708712ff6075c4dd54b0519b47fdad8816 (patch) | |
tree | 2fb6458b1db7dd21be2648f42412dd2485846c76 /backport-include/linux/dma-buf.h |
Backports v5.4.27
Backports generated by toradex backports f6e8852f1ef28e6d3c9bae8400eb6a87a6b0c3e7
against mainline kernel tag v5.4.27
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Diffstat (limited to 'backport-include/linux/dma-buf.h')
-rw-r--r-- | backport-include/linux/dma-buf.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/backport-include/linux/dma-buf.h b/backport-include/linux/dma-buf.h new file mode 100644 index 0000000..ef1d0d3 --- /dev/null +++ b/backport-include/linux/dma-buf.h @@ -0,0 +1,54 @@ +#ifndef _BACKPORT_DMA_BUF_H__ +#define _BACKPORT_DMA_BUF_H__ +#include <linux/version.h> +#if LINUX_VERSION_IS_GEQ(3,3,0) +#include_next <linux/dma-buf.h> +#endif /* LINUX_VERSION_IS_GEQ(3,3,0) */ +#include <linux/dma-direction.h> +#include <linux/dma-attrs.h> +#include <linux/dma-mapping.h> + +#if !defined(DEFINE_DMA_BUF_EXPORT_INFO) && LINUX_VERSION_IS_GEQ(3,3,0) +/** + * helper macro for exporters; zeros and fills in most common values + */ +#define DEFINE_DMA_BUF_EXPORT_INFO(a) \ + struct dma_buf_export_info a = { .exp_name = KBUILD_MODNAME } + +struct dma_buf_export_info { + const char *exp_name; + const struct dma_buf_ops *ops; + size_t size; + int flags; + struct reservation_object *resv; + void *priv; +}; + +#ifdef dma_buf_export +#undef dma_buf_export +#endif + +static inline +struct dma_buf *backport_dma_buf_export(const struct dma_buf_export_info *exp_info) +{ +#if LINUX_VERSION_IS_LESS(3,4,0) + return dma_buf_export(exp_info->priv, + (struct dma_buf_ops *)exp_info->ops, + exp_info->size, exp_info->flags); +#elif LINUX_VERSION_IS_LESS(3,10,0) + return dma_buf_export(exp_info->priv, exp_info->ops, + exp_info->size, exp_info->flags); +#elif LINUX_VERSION_IS_LESS(3,17,0) + return dma_buf_export_named(exp_info->priv, exp_info->ops, + exp_info->size, exp_info->flags, + exp_info->exp_name); +#else + return dma_buf_export_named(exp_info->priv, exp_info->ops, + exp_info->size, exp_info->flags, + exp_info->exp_name, exp_info->resv); +#endif +} +#define dma_buf_export LINUX_BACKPORT(dma_buf_export) +#endif /* !defined(DEFINE_DMA_BUF_EXPORT_INFO) */ + +#endif /* _BACKPORT_DMA_BUF_H__ */ |