linux-toradex.git/include/drm, branch v5.14-rc2

drm/amd/display: Partition DPCD address space and break up transactions

2021-06-15T21:25:41+00:00

[WHY]
SCR for DP 2.0 spec says that multiple LTTPRs must not be accessed in a
single AUX transaction.
There may be other places in future where breaking up AUX accesses is
necessary.

[HOW]
Partition the entire DPCD address space into blocks. When an incoming AUX
request spans multiple blocks, break up the request into multiple requests.

Signed-off-by: Wesley Chalmers 
Reviewed-by: Jun Lei 
Acked-by: Anson Jacob 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

Merge tag 'amd-drm-next-5.14-2021-06-09' of https://gitlab.freedesktop.org/agd5f/linux into drm-next

2021-06-10T03:47:13+00:00

amd-drm-next-5.14-2021-06-09:

amdgpu:
- SR-IOV fixes
- Smartshift updates
- GPUVM TLB flush updates
- 16bpc fixed point display fix for DCE11
- BACO cleanups and core refactoring
- Aldebaran updates
- Initial Yellow Carp support
- RAS fixes
- PM API cleanup
- DC visual confirm updates
- DC DP MST fixes
- DC DML fixes
- Misc code cleanups and bug fixes

amdkfd:
- Initial Yellow Carp support

radeon:
- memcpy_to/from_io fixes

UAPI:
- Add Yellow Carp chip family id
  Used internally in the kernel driver and by mesa

Signed-off-by: Dave Airlie 
From: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20210610031649.4006-1-alexander.deucher@amd.com

Merge tag 'drm-misc-next-2021-06-09' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2021-06-10T01:28:09+00:00

drm-misc-next for 5.14:

UAPI Changes:

 * drm/panfrost: Export AFBC_FEATURES register to userspace

Cross-subsystem Changes:

 * dma-buf: Fix debug printing; Rename dma_resv_*() functions + changes
   in callers; Cleanups

Core Changes:

 * Add prefetching memcpy for WC

 * Avoid circular dependency on CONFIG_FB

 * Cleanups

 * Documentation fixes throughout DRM

 * ttm: Make struct ttm_resource the base of all managers + changes
   in all users of TTM; Add a generic memcpy for page-based iomem; Remove
   use of VM_MIXEDMAP; Cleanups

Driver Changes:

 * drm/bridge: Add TI SN65DSI83 and SN65DSI84 + DT bindings

 * drm/hyperv: Add DRM driver for HyperV graphics output

 * drm/msm: Fix module dependencies

 * drm/panel: KD53T133: Support rotation

 * drm/pl111: Fix module dependencies

 * drm/qxl: Fixes

 * drm/stm: Cleanups

 * drm/sun4i: Be explicit about format modifiers

 * drm/vc4: Use struct gpio_desc; Cleanups

 * drm/vgem: Cleanups

 * drm/vmwgfx: Use ttm_bo_move_null() if there's nothing to copy

 * fbdev/mach64: Cleanups

 * fbdev/mb862xx: Use DEVICE_ATTR_RO

Signed-off-by: Dave Airlie 

From: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/YMBw3DF2b9udByfT@linux-uq9g

drm/ttm: Document and optimize ttm_bo_pipeline_gutting()

2021-06-07T14:07:08+00:00

If the bo is idle when calling ttm_bo_pipeline_gutting(), we unnecessarily
create a ghost object and push it out to delayed destroy.
Fix this by adding a path for idle, and document the function.

Also avoid having the bo end up in a bad state vulnerable to user-space
triggered kernel BUGs if the call to ttm_tt_create() fails.

Finally reuse ttm_bo_pipeline_gutting() in ttm_bo_evict().

Cc: Christian König 
Signed-off-by: Thomas Hellström 
Reviewed-by: Christian König 
Link: https://lore.kernel.org/r/20210602083818.241793-7-thomas.hellstrom@linux.intel.com

drm: Add a prefetching memcpy_from_wc

2021-06-07T14:07:08+00:00

Reading out of write-combining mapped memory is typically very slow
since the CPU doesn't prefetch. However some archs have special
instructions to do this.

So add a best-effort memcpy_from_wc taking dma-buf-map pointer
arguments that attempts to use a fast prefetching memcpy and
otherwise falls back to ordinary memcopies, taking the iomem tagging
into account.

The code is largely copied from i915_memcpy_from_wc.

Cc: Daniel Vetter 
Cc: Christian König 
Suggested-by: Daniel Vetter 
Signed-off-by: Thomas Hellström 
Acked-by: Christian König 
Acked-by: Daniel Vetter 
Link: https://lore.kernel.org/r/20210602083818.241793-5-thomas.hellstrom@linux.intel.com
Link: https://patchwork.freedesktop.org/patch/msgid/20210602083818.241793-5-thomas.hellstrom@linux.intel.com

drm/ttm: Add a generic TTM memcpy move for page-based iomem

2021-06-07T14:07:08+00:00

The internal ttm_bo_util memcpy uses ioremap functionality, and while it
probably might be possible to use it for copying in- and out of
sglist represented io memory, using io_mem_reserve() / io_mem_free()
callbacks, that would cause problems with fault().
Instead, implement a method mapping page-by-page using kmap_local()
semantics. As an additional benefit we then avoid the occasional global
TLB flushes of ioremap() and consuming ioremap space, elimination of a
critical point of failure and with a slight change of semantics we could
also push the memcpy out async for testing and async driver development
purposes.

A special linear iomem iterator is introduced internally to mimic the
old ioremap behaviour for code-paths that can't immediately be ported
over. This adds to the code size and should be considered a temporary
solution.

Looking at the code we have a lot of checks for iomap tagged pointers.
Ideally we should extend the core memremap functions to also accept
uncached memory and kmap_local functionality. Then we could strip a
lot of code.

Cc: Christian König 
Signed-off-by: Thomas Hellström 
Reviewed-by: Christian König 
Link: https://lore.kernel.org/r/20210602083818.241793-4-thomas.hellstrom@linux.intel.com

drm/amdgpu: add yellow carp asic_type enum

2021-06-04T20:03:05+00:00

This patch adds yellow carp to amd_asic_type enum and amdgpu_asic_name[].

Signed-off-by: Aaron Liu 
Reviewed-by: Huang Rui 
Signed-off-by: Alex Deucher

drm: fix doc warnings in drm_atomic.h

2021-06-04T16:40:01+00:00

Add description for parameters for
for_each_new_plane_in_state_reverse to fix warnings:

include/drm/drm_atomic.h:908: warning: Function parameter or member '__state' not described in 'for_each_new_plane_in_state_reverse'
include/drm/drm_atomic.h:908: warning: Function parameter or member 'plane' not described in 'for_each_new_plane_in_state_reverse'
include/drm/drm_atomic.h:908: warning: Function parameter or member 'new_plane_state' not described in 'for_each_new_plane_in_state_reverse'
include/drm/drm_atomic.h:908: warning: Function parameter or member '__i' not described in 'for_each_new_plane_in_state_reverse'

Fixes: a6c3c37b661d ("drm/amd/display: fix gcc set but not used warning of variable 'old_plane_state'")
Signed-off-by: Yu Kuai 
Signed-off-by: Alex Deucher

drm/ttm: flip the switch for driver allocated resources v2

2021-06-04T13:16:46+00:00

Instead of both driver and TTM allocating memory finalize embedding the
ttm_resource object as base into the driver backends.

v2: fix typo in vmwgfx grid mgr and double init in amdgpu_vram_mgr.c

Signed-off-by: Christian König 
Reviewed-by: Matthew Auld 
Link: https://patchwork.freedesktop.org/patch/msgid/20210602100914.46246-10-christian.koenig@amd.com

drm/ttm: flip over the range manager to self allocated nodes

2021-06-04T13:16:45+00:00

Start with the range manager to make the resource object the base
class for the allocated nodes.

While at it cleanup a lot of the code around that.

Signed-off-by: Christian König 
Reviewed-by: Matthew Auld 
Link: https://patchwork.freedesktop.org/patch/msgid/20210602100914.46246-2-christian.koenig@amd.com