diff options
Diffstat (limited to 'include/linux/dma-buf-test-exporter.h')
| -rwxr-xr-x | include/linux/dma-buf-test-exporter.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/include/linux/dma-buf-test-exporter.h b/include/linux/dma-buf-test-exporter.h new file mode 100755 index 00000000000..db0e9389813 --- /dev/null +++ b/include/linux/dma-buf-test-exporter.h @@ -0,0 +1,78 @@ +/* + * + * (C) COPYRIGHT ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms + * of such GNU licence. + * + * A copy of the licence is included with the program, and can also be obtained + * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + + + + +#ifndef _LINUX_DMA_BUF_TEST_EXPORTER_H_ +#define _LINUX_DMA_BUF_TEST_EXPORTER_H_ + +#include <linux/types.h> +#include <asm/ioctl.h> + +#define DMA_BUF_TE_VER_MAJOR 1 +#define DMA_BUF_TE_VER_MINOR 0 +#define DMA_BUF_TE_ENQ 0x642d7465 +#define DMA_BUF_TE_ACK 0x68692100 + +struct dma_buf_te_ioctl_version +{ + int op; /**< Must be set to DMA_BUF_TE_ENQ by client, driver will set it to DMA_BUF_TE_ACK */ + int major; /**< Major version */ + int minor; /**< Minor version */ +}; + +struct dma_buf_te_ioctl_alloc +{ + __u64 size; /* size of buffer to allocate, in pages */ +}; + +struct dma_buf_te_ioctl_status +{ + /* in */ + int fd; /* the dma_buf to query, only dma_buf objects exported by this driver is supported */ + /* out */ + int attached_devices; /* number of devices attached (active 'dma_buf_attach's) */ + int device_mappings; /* number of device mappings (active 'dma_buf_map_attachment's) */ + int cpu_mappings; /* number of cpu mappings (active 'mmap's) */ +}; + +struct dma_buf_te_ioctl_set_failing +{ + /* in */ + int fd; /* the dma_buf to set failure mode for, only dma_buf objects exported by this driver is supported */ + + /* zero = no fail injection, non-zero = inject failure */ + int fail_attach; + int fail_map; + int fail_mmap; +}; + +struct dma_buf_te_ioctl_fill +{ + int fd; + unsigned int value; +}; + +#define DMA_BUF_TE_IOCTL_BASE 'E' +/* Below all returning 0 if successful or -errcode except DMA_BUF_TE_ALLOC which will return fd or -errcode */ +#define DMA_BUF_TE_VERSION _IOR(DMA_BUF_TE_IOCTL_BASE, 0x00, struct dma_buf_te_ioctl_version) +#define DMA_BUF_TE_ALLOC _IOR(DMA_BUF_TE_IOCTL_BASE, 0x01, struct dma_buf_te_ioctl_alloc) +#define DMA_BUF_TE_QUERY _IOR(DMA_BUF_TE_IOCTL_BASE, 0x02, struct dma_buf_te_ioctl_status) +#define DMA_BUF_TE_SET_FAILING _IOW(DMA_BUF_TE_IOCTL_BASE, 0x03, struct dma_buf_te_ioctl_set_failing) +#define DMA_BUF_TE_ALLOC_CONT _IOR(DMA_BUF_TE_IOCTL_BASE, 0x04, struct dma_buf_te_ioctl_alloc) +#define DMA_BUF_TE_FILL _IOR(DMA_BUF_TE_IOCTL_BASE, 0x05, struct dma_buf_te_ioctl_fill) + +#endif /* _LINUX_DMA_BUF_TEST_EXPORTER_H_ */ |