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| author | Huang, Sean Z <sean.z.huang@intel.com> | 2021-09-24 21:14:42 +0200 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2021-10-04 19:10:44 +0200 |
| commit | cbbd3764b2399ad882cda98435b25144e9ea2124 (patch) | |
| tree | b47b6ea33a17fede4f7db31cd94671567c53a4e8 /include | |
| parent | drm/i915/pxp: set KCR reg init (diff) | |
| download | linux-cbbd3764b2399ad882cda98435b25144e9ea2124.tar.xz linux-cbbd3764b2399ad882cda98435b25144e9ea2124.zip | |
drm/i915/pxp: Create the arbitrary session after boot
Create the arbitrary session, with the fixed session id 0xf, after
system boot, for the case that application allocates the protected
buffer without establishing any protection session. Because the
hardware requires at least one alive session for protected buffer
creation. This arbitrary session will need to be re-created after
teardown or power event because hardware encryption key won't be
valid after such cases.
The session ID is exposed as part of the uapi so it can be used as part
of userspace commands.
v2: use gt->uncore->rpm (Chris)
v3: s/arb_is_in_play/arb_is_valid (Chris), move set-up to the new
init_hw function
v4: move interface defs to separate header, set arb_is valid to false
on fini (Rodrigo)
v5: handle async component binding
Signed-off-by: Huang, Sean Z <sean.z.huang@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210924191452.1539378-8-alan.previn.teres.alexis@intel.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/drm/i915_drm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index bde5860b3686..920e9e852e5a 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -3038,6 +3038,9 @@ struct drm_i915_gem_create_ext_memory_regions { __u64 regions; }; +/* ID of the protected content session managed by i915 when PXP is active */ +#define I915_PROTECTED_CONTENT_DEFAULT_SESSION 0xf + #if defined(__cplusplus) } #endif |