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drm/tegra: Deliver syncpoint base to user space

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This patch adds a separate ioctl for delivering syncpoint base number
to user space. If the syncpoint does not have an associated base, the
function returns -ENXIO.

Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Arto Merilainen 2013-10-14 15:21:54 +03:00 committed by Thierry Reding
parent f5a954fed9
commit c54a169b52
2 changed files with 46 additions and 9 deletions
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29
drivers/gpu/drm/tegra/drm.c
View File

@ -418,6 +418,34 @@ static int tegra_submit(struct drm_device *drm, void *data,
return context->client->ops->submit(context, args, drm, file);
}
static int tegra_get_syncpt_base(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct tegra_drm_file *fpriv = file->driver_priv;
struct drm_tegra_get_syncpt_base *args = data;
struct tegra_drm_context *context;
struct host1x_syncpt_base *base;
struct host1x_syncpt *syncpt;
context = tegra_drm_get_context(args->context);
if (!tegra_drm_file_owns_context(fpriv, context))
return -ENODEV;
if (args->syncpt >= context->client->base.num_syncpts)
return -EINVAL;
syncpt = context->client->base.syncpts[args->syncpt];
base = host1x_syncpt_get_base(syncpt);
if (!base)
return -ENXIO;
args->id = host1x_syncpt_base_id(base);
return 0;
}
#endif
static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
@ -431,6 +459,7 @@ static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, DRM_UNLOCKED),
#endif
};

26
include/uapi/drm/tegra_drm.h
View File

@ -68,6 +68,12 @@ struct drm_tegra_get_syncpt {
__u32 id;
};
struct drm_tegra_get_syncpt_base {
__u64 context;
__u32 syncpt;
__u32 id;
};
struct drm_tegra_syncpt {
__u32 id;
__u32 incrs;
@ -118,15 +124,16 @@ struct drm_tegra_submit {
__u32 reserved[5]; /* future expansion */
};
#define DRM_TEGRA_GEM_CREATE 0x00
#define DRM_TEGRA_GEM_MMAP 0x01
#define DRM_TEGRA_SYNCPT_READ 0x02
#define DRM_TEGRA_SYNCPT_INCR 0x03
#define DRM_TEGRA_SYNCPT_WAIT 0x04
#define DRM_TEGRA_OPEN_CHANNEL 0x05
#define DRM_TEGRA_CLOSE_CHANNEL 0x06
#define DRM_TEGRA_GET_SYNCPT 0x07
#define DRM_TEGRA_SUBMIT 0x08
#define DRM_TEGRA_GEM_CREATE 0x00
#define DRM_TEGRA_GEM_MMAP 0x01
#define DRM_TEGRA_SYNCPT_READ 0x02
#define DRM_TEGRA_SYNCPT_INCR 0x03
#define DRM_TEGRA_SYNCPT_WAIT 0x04
#define DRM_TEGRA_OPEN_CHANNEL 0x05
#define DRM_TEGRA_CLOSE_CHANNEL 0x06
#define DRM_TEGRA_GET_SYNCPT 0x07
#define DRM_TEGRA_SUBMIT 0x08
#define DRM_TEGRA_GET_SYNCPT_BASE 0x09
#define DRM_IOCTL_TEGRA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_CREATE, struct drm_tegra_gem_create)
#define DRM_IOCTL_TEGRA_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_MMAP, struct drm_tegra_gem_mmap)
@ -137,5 +144,6 @@ struct drm_tegra_submit {
#define DRM_IOCTL_TEGRA_CLOSE_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_CLOSE_CHANNEL, struct drm_tegra_open_channel)
#define DRM_IOCTL_TEGRA_GET_SYNCPT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT, struct drm_tegra_get_syncpt)
#define DRM_IOCTL_TEGRA_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SUBMIT, struct drm_tegra_submit)
#define DRM_IOCTL_TEGRA_GET_SYNCPT_BASE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT_BASE, struct drm_tegra_get_syncpt_base)
#endif