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| author | Dave Airlie <airlied@redhat.com> | 2022-07-12 08:50:41 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2022-07-12 09:50:05 +0300 |
| commit | 8daecf611258d252b3107132d0143752b2e186fc (patch) | |
| tree | 7e10777180fdb971aaaa94893648e4c123ad8981 /include | |
| parent | b45b4f880fb660c4bd4794a2ca3950c4570e12c6 (diff) | |
| parent | 135f4c551d51065ee2d0677bf5344a89767e9d9b (diff) | |
| download | linux-8daecf611258d252b3107132d0143752b2e186fc.tar.xz | |
Merge tag 'drm/tegra/for-5.20-rc1' of https://gitlab.freedesktop.org/drm/tegra into drm-next
drm/tegra: Changes for v5.20-rc1
The bulk of these changes adds support for context isolation for the
various supported host1x engines, as well as support for the hardware
found on the new Tegra234 SoC generation.
There's also a couple of fixes and cleanups. To round things off, the
device tree bindings are converted to the new json-schema format that
allows DTBs to be validated.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220708181136.673789-1-thierry.reding@gmail.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/host1x.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/host1x.h b/include/linux/host1x.h index c0bf4e581fe9..cb2100d9b0ff 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -327,6 +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, @@ -446,4 +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 |