diff options
Diffstat (limited to 'include/linux/host1x.h')
| -rw-r--r-- | include/linux/host1x.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/include/linux/host1x.h b/include/linux/host1x.h index e8dc5bc41f79..cb2100d9b0ff 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -31,6 +31,11 @@ u64 host1x_get_dma_mask(struct host1x *host1x); * struct host1x_bo_cache - host1x buffer object cache * @mappings: list of mappings * @lock: synchronizes accesses to the list of mappings + * + * Note that entries are not periodically evicted from this cache and instead need to be + * explicitly released. This is used primarily for DRM/KMS where the cache's reference is + * released when the last reference to a buffer object represented by a mapping in this + * cache is dropped. */ struct host1x_bo_cache { struct list_head mappings; @@ -81,6 +86,7 @@ struct host1x_client_ops { * @parent: pointer to parent structure * @usecount: reference count for this structure * @lock: mutex for mutually exclusive concurrency + * @cache: host1x buffer object cache */ struct host1x_client { struct list_head list; @@ -321,6 +327,14 @@ struct host1x_job { /* Whether host1x-side firewall should be ran for this job or not */ bool enable_firewall; + + /* Options for configuring engine data stream ID */ + /* Context device to use for job */ + struct host1x_memory_context *memory_context; + /* Stream ID to use if context isolation is disabled (!memory_context) */ + u32 engine_fallback_streamid; + /* Engine offset to program stream ID to */ + u32 engine_streamid_offset; }; struct host1x_job *host1x_job_alloc(struct host1x_channel *ch, @@ -440,4 +454,38 @@ int tegra_mipi_disable(struct tegra_mipi_device *device); int tegra_mipi_start_calibration(struct tegra_mipi_device *device); int tegra_mipi_finish_calibration(struct tegra_mipi_device *device); +/* host1x memory contexts */ + +struct host1x_memory_context { + struct host1x *host; + + refcount_t ref; + struct pid *owner; + + struct device dev; + u64 dma_mask; + u32 stream_id; +}; + +#ifdef CONFIG_IOMMU_API +struct host1x_memory_context *host1x_memory_context_alloc(struct host1x *host1x, + struct pid *pid); +void host1x_memory_context_get(struct host1x_memory_context *cd); +void host1x_memory_context_put(struct host1x_memory_context *cd); +#else +static inline struct host1x_memory_context *host1x_memory_context_alloc(struct host1x *host1x, + struct pid *pid) +{ + return NULL; +} + +static inline void host1x_memory_context_get(struct host1x_memory_context *cd) +{ +} + +static inline void host1x_memory_context_put(struct host1x_memory_context *cd) +{ +} +#endif + #endif |