#include <stddef.h>
#include "drm.h"
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
/* Please note that modifications to all structs defined here are
* subject to backwards-compatibility constraints:
- * 1) Do not use pointers, use uint64_t instead for 32 bit / 64 bit
+ * 1) Do not use pointers, use __u64 instead for 32 bit / 64 bit
* user/kernel compatibility
* 2) Keep fields aligned to their size
* 3) Because of how drm_ioctl() works, we can add new fields at
* same as 'struct timespec' but 32/64b ABI safe.
*/
struct drm_msm_timespec {
- int64_t tv_sec; /* seconds */
- int64_t tv_nsec; /* nanoseconds */
+ __s64 tv_sec; /* seconds */
+ __s64 tv_nsec; /* nanoseconds */
};
#define MSM_PARAM_GPU_ID 0x01
#define MSM_PARAM_TIMESTAMP 0x05
struct drm_msm_param {
- uint32_t pipe; /* in, MSM_PIPE_x */
- uint32_t param; /* in, MSM_PARAM_x */
- uint64_t value; /* out (get_param) or in (set_param) */
+ __u32 pipe; /* in, MSM_PIPE_x */
+ __u32 param; /* in, MSM_PARAM_x */
+ __u64 value; /* out (get_param) or in (set_param) */
};
/*
MSM_BO_UNCACHED)
struct drm_msm_gem_new {
- uint64_t size; /* in */
- uint32_t flags; /* in, mask of MSM_BO_x */
- uint32_t handle; /* out */
+ __u64 size; /* in */
+ __u32 flags; /* in, mask of MSM_BO_x */
+ __u32 handle; /* out */
};
struct drm_msm_gem_info {
- uint32_t handle; /* in */
- uint32_t pad;
- uint64_t offset; /* out, offset to pass to mmap() */
+ __u32 handle; /* in */
+ __u32 pad;
+ __u64 offset; /* out, offset to pass to mmap() */
};
#define MSM_PREP_READ 0x01
#define MSM_PREP_FLAGS (MSM_PREP_READ | MSM_PREP_WRITE | MSM_PREP_NOSYNC)
struct drm_msm_gem_cpu_prep {
- uint32_t handle; /* in */
- uint32_t op; /* in, mask of MSM_PREP_x */
+ __u32 handle; /* in */
+ __u32 op; /* in, mask of MSM_PREP_x */
struct drm_msm_timespec timeout; /* in */
};
struct drm_msm_gem_cpu_fini {
- uint32_t handle; /* in */
+ __u32 handle; /* in */
};
/*
* otherwise EINVAL.
*/
struct drm_msm_gem_submit_reloc {
- uint32_t submit_offset; /* in, offset from submit_bo */
- uint32_t or; /* in, value OR'd with result */
- int32_t shift; /* in, amount of left shift (can be negative) */
- uint32_t reloc_idx; /* in, index of reloc_bo buffer */
- uint64_t reloc_offset; /* in, offset from start of reloc_bo */
+ __u32 submit_offset; /* in, offset from submit_bo */
+ __u32 or; /* in, value OR'd with result */
+ __s32 shift; /* in, amount of left shift (can be negative) */
+ __u32 reloc_idx; /* in, index of reloc_bo buffer */
+ __u64 reloc_offset; /* in, offset from start of reloc_bo */
};
/* submit-types:
#define MSM_SUBMIT_CMD_IB_TARGET_BUF 0x0002
#define MSM_SUBMIT_CMD_CTX_RESTORE_BUF 0x0003
struct drm_msm_gem_submit_cmd {
- uint32_t type; /* in, one of MSM_SUBMIT_CMD_x */
- uint32_t submit_idx; /* in, index of submit_bo cmdstream buffer */
- uint32_t submit_offset; /* in, offset into submit_bo */
- uint32_t size; /* in, cmdstream size */
- uint32_t pad;
- uint32_t nr_relocs; /* in, number of submit_reloc's */
- uint64_t __user relocs; /* in, ptr to array of submit_reloc's */
+ __u32 type; /* in, one of MSM_SUBMIT_CMD_x */
+ __u32 submit_idx; /* in, index of submit_bo cmdstream buffer */
+ __u32 submit_offset; /* in, offset into submit_bo */
+ __u32 size; /* in, cmdstream size */
+ __u32 pad;
+ __u32 nr_relocs; /* in, number of submit_reloc's */
+ __u64 __user relocs; /* in, ptr to array of submit_reloc's */
};
/* Each buffer referenced elsewhere in the cmdstream submit (ie. the
#define MSM_SUBMIT_BO_FLAGS (MSM_SUBMIT_BO_READ | MSM_SUBMIT_BO_WRITE)
struct drm_msm_gem_submit_bo {
- uint32_t flags; /* in, mask of MSM_SUBMIT_BO_x */
- uint32_t handle; /* in, GEM handle */
- uint64_t presumed; /* in/out, presumed buffer address */
+ __u32 flags; /* in, mask of MSM_SUBMIT_BO_x */
+ __u32 handle; /* in, GEM handle */
+ __u64 presumed; /* in/out, presumed buffer address */
};
/* Each cmdstream submit consists of a table of buffers involved, and
* (context-restore), and IB buffers needed for per tile/bin draw cmds.
*/
struct drm_msm_gem_submit {
- uint32_t pipe; /* in, MSM_PIPE_x */
- uint32_t fence; /* out */
- uint32_t nr_bos; /* in, number of submit_bo's */
- uint32_t nr_cmds; /* in, number of submit_cmd's */
- uint64_t __user bos; /* in, ptr to array of submit_bo's */
- uint64_t __user cmds; /* in, ptr to array of submit_cmd's */
+ __u32 pipe; /* in, MSM_PIPE_x */
+ __u32 fence; /* out */
+ __u32 nr_bos; /* in, number of submit_bo's */
+ __u32 nr_cmds; /* in, number of submit_cmd's */
+ __u64 __user bos; /* in, ptr to array of submit_bo's */
+ __u64 __user cmds; /* in, ptr to array of submit_cmd's */
};
/* The normal way to synchronize with the GPU is just to CPU_PREP on
* APIs without requiring a dummy bo to synchronize on.
*/
struct drm_msm_wait_fence {
- uint32_t fence; /* in */
- uint32_t pad;
+ __u32 fence; /* in */
+ __u32 pad;
struct drm_msm_timespec timeout; /* in */
};
+/* madvise provides a way to tell the kernel in case a buffers contents
+ * can be discarded under memory pressure, which is useful for userspace
+ * bo cache where we want to optimistically hold on to buffer allocate
+ * and potential mmap, but allow the pages to be discarded under memory
+ * pressure.
+ *
+ * Typical usage would involve madvise(DONTNEED) when buffer enters BO
+ * cache, and madvise(WILLNEED) if trying to recycle buffer from BO cache.
+ * In the WILLNEED case, 'retained' indicates to userspace whether the
+ * backing pages still exist.
+ */
+#define MSM_MADV_WILLNEED 0 /* backing pages are needed, status returned in 'retained' */
+#define MSM_MADV_DONTNEED 1 /* backing pages not needed */
+#define __MSM_MADV_PURGED 2 /* internal state */
+
+struct drm_msm_gem_madvise {
+ __u32 handle; /* in, GEM handle */
+ __u32 madv; /* in, MSM_MADV_x */
+ __u32 retained; /* out, whether backing store still exists */
+};
+
#define DRM_MSM_GET_PARAM 0x00
/* placeholder:
#define DRM_MSM_SET_PARAM 0x01
#define DRM_MSM_GEM_CPU_FINI 0x05
#define DRM_MSM_GEM_SUBMIT 0x06
#define DRM_MSM_WAIT_FENCE 0x07
-#define DRM_MSM_NUM_IOCTLS 0x08
+#define DRM_MSM_GEM_MADVISE 0x08
+#define DRM_MSM_NUM_IOCTLS 0x09
#define DRM_IOCTL_MSM_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param)
#define DRM_IOCTL_MSM_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_NEW, struct drm_msm_gem_new)
#define DRM_IOCTL_MSM_GEM_CPU_FINI DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_FINI, struct drm_msm_gem_cpu_fini)
#define DRM_IOCTL_MSM_GEM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_SUBMIT, struct drm_msm_gem_submit)
#define DRM_IOCTL_MSM_WAIT_FENCE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_WAIT_FENCE, struct drm_msm_wait_fence)
+#define DRM_IOCTL_MSM_GEM_MADVISE DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_MADVISE, struct drm_msm_gem_madvise)
+
+#if defined(__cplusplus)
+}
+#endif
#endif /* __MSM_DRM_H__ */
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