linux-stable.git/drivers/gpu/drm/amd/amdgpu/tonga_ih.c, branch linux-6.2.y

drm/amdgpu: Handle IOMMU enabled case.

2021-05-20T03:50:27+00:00

Problem:
Handle all DMA IOMMU group related dependencies before the
group is removed. Those manifest themself in that when IOMMU
enabled DMA map/unmap is dependent on the presence of IOMMU
group the device belongs to but, this group is released once
the device is removed from PCI topology.

Fix:
Expedite all such unmap operations to pci remove driver callback.

v5: Drop IOMMU notifier and switch to lockless call to ttm_tt_unpopulate
v6: Drop the BO unamp list
v7:
Drop amdgpu_gart_fini
In amdgpu_ih_ring_fini do uncinditional  check (!ih->ring)
to avoid freeing uniniitalized rings.
Call amdgpu_ih_ring_fini unconditionally.
v8: Add deatiled explanation

Signed-off-by: Andrey Grodzovsky 
Reviewed-by: Felix Kuehling 
Link: https://patchwork.freedesktop.org/patch/msgid/20210517143851.475058-1-andrey.grodzovsky@amd.com

drm/amdgpu: Split amdgpu_device_fini into early and late

2021-05-20T03:45:49+00:00

Some of the stuff in amdgpu_device_fini such as HW interrupts
disable and pending fences finilization must be done right away on
pci_remove while most of the stuff which relates to finilizing and
releasing driver data structures can be kept until
drm_driver.release hook is called, i.e. when the last device
reference is dropped.

v4: Change functions prefix early->hw and late->sw

Signed-off-by: Andrey Grodzovsky 
Acked-by: Christian König 
Reviewed-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20210512142648.666476-3-andrey.grodzovsky@amd.com

drm/amdgpu: Add check to prevent IH overflow

2021-01-05T20:05:16+00:00

Similar to commit ("drm/amdgpu: fix IH overflow on Vega10 v2").
When an ring buffer overflow happens the appropriate bit is set in the WPTR
register which is also written back to memory. But clearing the bit in the
WPTR doesn't trigger another memory writeback.

So what can happen is that we end up processing the buffer overflow over and
over again because the bit is never cleared. Resulting in a random system
lockup because of an infinite loop in an interrupt handler.

Reviewed-by: Christian König 
Signed-off-by: Defang Bo 
Signed-off-by: Alex Deucher

drm/amd/amdgpu/tonga_ih: Provide some missing descriptions for 'ih' and 'entry'

2020-12-01T21:04:41+00:00

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/tonga_ih.c:193: warning: Function parameter or member 'ih' not described in 'tonga_ih_get_wptr'
 drivers/gpu/drm/amd/amdgpu/tonga_ih.c:225: warning: Function parameter or member 'ih' not described in 'tonga_ih_decode_iv'
 drivers/gpu/drm/amd/amdgpu/tonga_ih.c:225: warning: Function parameter or member 'entry' not described in 'tonga_ih_decode_iv'
 drivers/gpu/drm/amd/amdgpu/tonga_ih.c:255: warning: Function parameter or member 'ih' not described in 'tonga_ih_set_rptr'

Cc: Alex Deucher 
Cc: "Christian König" 
Cc: David Airlie 
Cc: Daniel Vetter 
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones 
Signed-off-by: Alex Deucher

drm/amd: drop use of drmP.h in remaining files

2019-06-10T21:04:34+00:00

With this commit drm/amd/ has no longer any uses of
the deprecated drmP.h header file.

Signed-off-by: Sam Ravnborg 
Reviewed-by: Alex Deucher 
Cc: "Christian König" 
Cc: "David (ChunMing) Zhou" 
Cc: David Airlie 
Cc: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20190609220757.10862-11-sam@ravnborg.org

drm/amdgpu: simplify IH programming

2019-01-14T20:04:47+00:00

Calculate all the addresses and pointers in amdgpu_ih.c

Signed-off-by: Christian König 
Reviewed-by: Alex Deucher 
Signed-off-by: Alex Deucher

drm/amdgpu: add IH ring to ih_get_wptr/ih_set_rptr v2

2019-01-14T20:04:47+00:00

Let's start to support multiple rings.

v2: decode IV is needed as well

Signed-off-by: Christian König 
Acked-by: Alex Deucher 
Signed-off-by: Alex Deucher

drm/amdgpu: move IV prescreening into the GMC code

2018-12-07T23:14:26+00:00

The GMC/VM subsystem is causing the faults, so move the handling here as
well.

Signed-off-by: Christian König 
Reviewed-by: Felix Kuehling 
Acked-by: Alex Deucher 
Signed-off-by: Alex Deucher

drm/amdgpu: remove VM fault_credit handling

2018-12-07T23:14:20+00:00

printk_ratelimit() is much better suited to limit the number of reported
VM faults.

Signed-off-by: Christian König 
Reviewed-by: Felix Kuehling 
Acked-by: Alex Deucher 
Signed-off-by: Alex Deucher

drm/amdgpu: Use asic specific doorbell index instead of macro definition

2018-11-28T20:55:33+00:00

ASIC specific doorbell layout is used instead of enum definition

Signed-off-by: Oak Zeng 
Suggested-by: Felix Kuehling 
Suggested-by: Alex Deucher 
Reviewed-by: Alex Deucher 
Signed-off-by: Alex Deucher