diff options
| author | Aravind Iddamsetty <aravind.iddamsetty@intel.com> | 2022-11-22 10:01:26 +0300 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2022-11-29 08:23:46 +0300 |
| commit | 0f85715804e72cdcf489a89930ec64437e11ca8c (patch) | |
| tree | f02125733db75e420b8ae6e96bbb850bed94d94e /drivers/gpu/drm/i915/gt/intel_gtt.h | |
| parent | 900a80c5836587d95db32742f66e1f34f7b40fcb (diff) | |
| download | linux-0f85715804e72cdcf489a89930ec64437e11ca8c.tar.xz | |
drm/i915/mtl: Media GT and Render GT share common GGTT
On XE_LPM+ platforms the media engines are carved out into a separate
GT but have a common GGTMMADR address range which essentially makes
the GGTT address space to be shared between media and render GT. As a
result any updates in GGTT shall invalidate TLB of GTs sharing it and
similarly any operation on GGTT requiring an action on a GT will have to
involve all GTs sharing it. setup_private_pat was being done on a per
GGTT based as that doesn't touch any GGTT structures moved it to per GT
based.
BSPEC: 63834
v2:
1. Add details to commit msg
2. includes fix for failure to add item to ggtt->gt_list, as suggested
by Lucas
3. as ggtt_flush() is used only for ggtt drop i915_is_ggtt check within
it.
4. setup_private_pat moved out of intel_gt_tiles_init
v3:
1. Move out for_each_gt from i915_driver.c (Jani Nikula)
v4: drop using RCU primitives on ggtt->gt_list as it is not an RCU list
(Matt Roper)
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Aravind Iddamsetty <aravind.iddamsetty@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221122070126.4813-1-aravind.iddamsetty@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_gtt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gtt.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h index 4d75ba4bb41d..d1900fec6cd1 100644 --- a/drivers/gpu/drm/i915/gt/intel_gtt.h +++ b/drivers/gpu/drm/i915/gt/intel_gtt.h @@ -390,6 +390,9 @@ struct i915_ggtt { struct mutex error_mutex; struct drm_mm_node error_capture; struct drm_mm_node uc_fw; + + /** List of GTs mapping this GGTT */ + struct list_head gt_list; }; struct i915_ppgtt { @@ -584,6 +587,7 @@ void i915_ggtt_disable_guc(struct i915_ggtt *ggtt); int i915_init_ggtt(struct drm_i915_private *i915); void i915_ggtt_driver_release(struct drm_i915_private *i915); void i915_ggtt_driver_late_release(struct drm_i915_private *i915); +struct i915_ggtt *i915_ggtt_create(struct drm_i915_private *i915); static inline bool i915_ggtt_has_aperture(const struct i915_ggtt *ggtt) { |