diff options
| author | Matt Roper <matthew.d.roper@intel.com> | 2023-06-02 00:52:19 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-20 02:34:11 +0300 |
| commit | 3b0d4a5579968f1c42044142a4997bab9fe7ffed (patch) | |
| tree | c8351f2fe7c3e997bc555ce935158b76a4f5a305 /drivers/gpu/drm/xe/xe_device_types.h | |
| parent | 3643e6371542cc4782d3700f07130c9d250666d8 (diff) | |
| download | linux-3b0d4a5579968f1c42044142a4997bab9fe7ffed.tar.xz | |
drm/xe: Move register MMIO into xe_tile
Each tile has its own register region in the BAR, containing instances
of all registers for the platform. In contrast, the multiple GTs within
a tile share the same MMIO space; there's just a small subset of
registers (the GSI registers) which have multiple copies at different
offsets (0x0 for primary GT, 0x380000 for media GT). Move the register
MMIO region size/pointers to the tile structure, leaving just the GSI
offset information in the GT structure.
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20230601215244.678611-7-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_device_types.h')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_device_types.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h index b76344a9c33b..107a947a7361 100644 --- a/drivers/gpu/drm/xe/xe_device_types.h +++ b/drivers/gpu/drm/xe/xe_device_types.h @@ -75,6 +75,22 @@ struct xe_tile { struct xe_gt primary_gt; /* TODO: Add media GT here */ + + /** + * @mmio: MMIO info for a tile. + * + * Each tile has its own 16MB space in BAR0, laid out as: + * * 0-4MB: registers + * * 4MB-8MB: reserved + * * 8MB-16MB: global GTT + */ + struct { + /** @size: size of tile's MMIO space */ + size_t size; + + /** @regs: pointer to tile's MMIO space (starting with registers) */ + void *regs; + } mmio; }; /** |