linux-toradex.git/drivers/gpu/drm/amd/amdgpu/amdgpu.h, branch v5.9-rc3

drm/amdgpu: add module parameter choose reset mode

2020-07-15T16:42:01+00:00

Default value is auto, doesn't change
original reset method logic.

v2: change to use parameter reset_method
v3: add warn msg if specified mode isn't supported

Signed-off-by: Likun Gao 
Signed-off-by: Wenhui Sheng 
Reviewed-by: Hawking Zhang 
Signed-off-by: Alex Deucher

Revert "drm/amdgpu: support access regs outside of mmio bar"

2020-07-02T16:02:56+00:00

This reverts commit 2eee0229f65e897134566888e5321bcb3af0df7a.
Fallback to a stable base until we have a correct new one

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

drm/amdgpu: SI support for VCE clock control

2020-07-02T16:02:49+00:00

Port functionality from the Radeon driver to support
VCE clock control.

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

drm/amdkfd: Add eviction debug messages

2020-07-01T05:59:21+00:00

Use WARN to print messages with backtrace when evictions are triggered.
This can help determine the root cause of evictions and help spot driver
bugs triggering evictions unintentionally, or help with performance tuning
by avoiding conditions that cause evictions in a specific workload.

The messages are controlled by a new module parameter that can be changed
at runtime:

  echo Y > /sys/module/amdgpu/parameters/debug_evictions
  echo N > /sys/module/amdgpu/parameters/debug_evictions

Signed-off-by: Felix Kuehling 
Reviewed-by: Philip Yang 
Signed-off-by: Alex Deucher

drm/amdgpu: Fix a buffer overflow handling the serial number

2020-07-01T05:59:19+00:00

The comments say that the serial number is a 16-digit HEX string so the
buffer needs to be at least 17 characters to hold the NUL terminator.

The other issue is that "size" returned from sprintf() is the number of
characters before the NUL terminator so the memcpy() wasn't copying the
terminator.  The serial number needs to be NUL terminated so that it
doesn't lead to a read overflow in amdgpu_device_get_serial_number().
Also it's just cleaner and faster to sprintf() directly to adev->serial[]
instead of using a temporary buffer.

Fixes: 81a16241114b ("drm/amdgpu: Add unique_id and serial_number for Arcturus v3")
Signed-off-by: Dan Carpenter 
Signed-off-by: Alex Deucher 
Reviewed-by: Evan Quan

drm/amdgpu: remove unnecessary check for mem train

2020-07-01T05:59:14+00:00

a.Check whether mem train support when try to reserve related memory.
b.Remove ASIC check and atom firmware table version check as the check
of firmware capability is enough to achieve that purpose.

Signed-off-by: Likun Gao 
Reviewed-by: Hawking Zhang 
Signed-off-by: Alex Deucher

drm/amdgpu: added a sysfs interface for thermal throttling related V4

2020-05-29T17:55:07+00:00

User can check and set the enablement of throttling logging and
the interval between each logging.

V2: simplify the sysfs interface(no string parsing)
V3: add proper lock protection on updating throttling_logging_rs.interval
V4: documentation cosmetic per Luben's suggestion

Signed-off-by: Evan Quan 
Reviewed-by: Christian König 
Reviewed-by: Luben Tuikov 
Signed-off-by: Alex Deucher

drm/amdgpu: add apu flags (v2)

2020-05-22T17:41:53+00:00

Add some APU flags to simplify handling of different APU
variants.  It's easier to understand the special cases
if we use names flags rather than checking device ids and
silicon revisions.

v2: rebase on latest code

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

drm/amd/display: Add DC Debug mask to disable features for bringup

2020-05-21T16:37:19+00:00

[Why]
At bringup we want to be able to disable various power features.

[How]
These features are already exposed as dc_debug_options and exercised
on other OSes. Create a new dc_debug_mask module parameter and expose
relevant bits, in particular
 * DC_DISABLE_PIPE_SPLIT
 * DC_DISABLE_STUTTER
 * DC_DISABLE_DSC
 * DC_DISABLE_CLOCK_GATING

Signed-off-by: Harry Wentland 
Reviewed-by: Nicholas Kazlauskas 
Signed-off-by: Alex Deucher

drm/amdgpu: Add autodump debugfs node for gpu reset v8

2020-05-18T15:23:37+00:00

When GPU got timeout, it would notify an interested part
of an opportunity to dump info before actual GPU reset.

A usermode app would open 'autodump' node under debugfs system
and poll() for readable/writable. When a GPU reset is due,
amdgpu would notify usermode app through wait_queue_head and give
it 10 minutes to dump info.

After usermode app has done its work, this 'autodump' node is closed.
On node closure, amdgpu gets to know the dump is done through
the completion that is triggered in release().

There is no write or read callback because necessary info can be
obtained through dmesg and umr. Messages back and forth between
usermode app and amdgpu are unnecessary.

v2: (1) changed 'registered' to 'app_listening'
    (2) add a mutex in open() to prevent race condition

v3 (chk): grab the reset lock to avoid race in autodump_open,
          rename debugfs file to amdgpu_autodump,
          provide autodump_read as well,
          style and code cleanups

v4: add 'bool app_listening' to differentiate situations, so that
    the node can be reopened; also, there is no need to wait for
    completion when no app is waiting for a dump.

v5: change 'bool app_listening' to 'enum amdgpu_autodump_state'
    add 'app_state_mutex' for race conditions:
	(1)Only 1 user can open this file node
	(2)wait_dump() can only take effect after poll() executed.
	(3)eliminated the race condition between release() and
	   wait_dump()

v6: removed 'enum amdgpu_autodump_state' and 'app_state_mutex'
    removed state checking in amdgpu_debugfs_wait_dump
    Improve on top of version 3 so that the node can be reopened.

v7: move reinit_completion into open() so that only one user
    can open it.

v8: remove complete_all() from amdgpu_debugfs_wait_dump().

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