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author | Dave Airlie <airlied@redhat.com> | 2018-11-19 11:07:52 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2018-11-19 11:07:52 +1000 |
commit | 9235dd441af43599b9cdcce599a3da4083fcad3c (patch) | |
tree | 5f8a79cc2d378f05e807c6c5e388394b8e86319d /Documentation/gpu | |
parent | d7563c55ef9fc1fd2301b8708b3c1f53509d6745 (diff) | |
parent | 36b486bc682114a2f1001cbf1a87f21ae381bfc1 (diff) | |
download | linux-9235dd441af43599b9cdcce599a3da4083fcad3c.tar.bz2 |
Merge branch 'drm-next-4.21' of git://people.freedesktop.org/~agd5f/linux into drm-next
New features for 4.21:
amdgpu:
- Support for SDMA paging queue on vega
- Put compute EOP buffers into vram for better performance
- Share more code with amdkfd
- Support for scanout with DCC on gfx9
- Initial kerneldoc for DC
- Updated SMU firmware support for gfx8 chips
- Rework CSA handling for eventual support for preemption
- XGMI PSP support
- Clean up RLC handling
- Enable GPU reset by default on VI, SOC15 dGPUs
- Ring and IB test cleanups
amdkfd:
- Share more code with amdgpu
ttm:
- Move global init out of the drivers
scheduler:
- Track if schedulers are ready for work
- Timeout/fault handling changes to facilitate GPU recovery
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181114165113.3751-1-alexander.deucher@amd.com
Diffstat (limited to 'Documentation/gpu')
-rw-r--r-- | Documentation/gpu/amdgpu-dc.rst | 68 | ||||
-rw-r--r-- | Documentation/gpu/drivers.rst | 1 | ||||
-rw-r--r-- | Documentation/gpu/drm-mm.rst | 4 |
3 files changed, 71 insertions, 2 deletions
diff --git a/Documentation/gpu/amdgpu-dc.rst b/Documentation/gpu/amdgpu-dc.rst new file mode 100644 index 000000000000..cc89b0fc11df --- /dev/null +++ b/Documentation/gpu/amdgpu-dc.rst @@ -0,0 +1,68 @@ +=================================== +drm/amd/display - Display Core (DC) +=================================== + +*placeholder - general description of supported platforms, what dc is, etc.* + +Because it is partially shared with other operating systems, the Display Core +Driver is divided in two pieces. + +1. **Display Core (DC)** contains the OS-agnostic components. Things like + hardware programming and resource management are handled here. +2. **Display Manager (DM)** contains the OS-dependent components. Hooks to the + amdgpu base driver and DRM are implemented here. + +It doesn't help that the entire package is frequently referred to as DC. But +with the context in mind, it should be clear. + +When CONFIG_DRM_AMD_DC is enabled, DC will be initialized by default for +supported ASICs. To force disable, set `amdgpu.dc=0` on kernel command line. +Likewise, to force enable on unsupported ASICs, set `amdgpu.dc=1`. + +To determine if DC is loaded, search dmesg for the following entry: + +``Display Core initialized with <version number here>`` + +AMDgpu Display Manager +====================== + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :doc: overview + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h + :internal: + +Lifecycle +--------- + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :doc: DM Lifecycle + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :functions: dm_hw_init dm_hw_fini + +Interrupts +---------- + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c + :doc: overview + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c + :internal: + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :functions: register_hpd_handlers dm_crtc_high_irq dm_pflip_high_irq + +Atomic Implementation +--------------------- + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :doc: atomic + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :functions: amdgpu_dm_atomic_check amdgpu_dm_atomic_commit_tail + +Display Core +============ + +**WIP** diff --git a/Documentation/gpu/drivers.rst b/Documentation/gpu/drivers.rst index 7d2d3875ff1a..7c1672118a73 100644 --- a/Documentation/gpu/drivers.rst +++ b/Documentation/gpu/drivers.rst @@ -5,6 +5,7 @@ GPU Driver Documentation .. toctree:: amdgpu + amdgpu-dc i915 meson pl111 diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst index e725e8449e72..d0f3c6b03200 100644 --- a/Documentation/gpu/drm-mm.rst +++ b/Documentation/gpu/drm-mm.rst @@ -72,8 +72,8 @@ object TTM to provide a pool for buffer object allocation by clients and the kernel itself. The type of this object should be TTM_GLOBAL_TTM_BO, and its size should be sizeof(struct ttm_bo_global). Again, driver-specific init and release functions may -be provided, likely eventually calling ttm_bo_global_init() and -ttm_bo_global_release(), respectively. Also, like the previous +be provided, likely eventually calling ttm_bo_global_ref_init() and +ttm_bo_global_ref_release(), respectively. Also, like the previous object, ttm_global_item_ref() is used to create an initial reference count for the TTM, which will call your initialization function. |