linux.git/drivers/gpu/drm/msm/msm_gpu.h, branch v5.5

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234

2019-06-19T15:09:07+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not see http www gnu org
  licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 503 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Alexios Zavras 
Reviewed-by: Allison Randal 
Reviewed-by: Enrico Weigelt 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de
Signed-off-by: Greg Kroah-Hartman

drm/msm: add param to retrieve # of GPU faults (global)

2019-04-19T18:50:00+00:00

For KHR_robustness, userspace wants to know two things, the count of GPU
faults globally, and the count of faults attributed to a given context.
This patch providees the former, and the next patch provides the latter.

Signed-off-by: Rob Clark 
Reviewed-by: Jordan Crouse

drm/msm/a6xx: Add support for an interconnect path

2019-02-19T13:50:12+00:00

Try to get the interconnect path for the GPU and vote for the maximum
bandwidth to support all frequencies. This is needed for performance.
Later we will want to scale the bandwidth based on the frequency to
also optimize for power but that will require some device tree
infrastructure that does not yet exist.

v6: use icc_set_bw() instead of icc_set()
v5: Remove hardcoded interconnect name and just use the default
v4: Don't use a port string at all to skip the need for names in the DT
v3: Use macros and change port string per Georgi Djakov

Signed-off-by: Jordan Crouse 
Acked-by: Rob Clark 
Reviewed-by: Evan Green 
Signed-off-by: Georgi Djakov 
Signed-off-by: Greg Kroah-Hartman

drm/msm/gpu: Remove hardcoded interrupt name

2019-01-24T20:36:32+00:00

Every GPU core only has one interrupt so there isn't any
value in looking up the interrupt by name. Remove the name (which
is legacy anyway) and use platform_get_irq() instead.

Signed-off-by: Jordan Crouse 
Reviewed-by: Douglas Anderson 
Signed-off-by: Rob Clark

drm/msm/gpu: fix building without debugfs

2019-01-24T20:36:24+00:00

When debugfs is disabled, but coredump is turned on, the adreno driver fails to build:

drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:4: error: 'struct msm_gpu_funcs' has no member named 'show'
   .show = adreno_show,
    ^~~~
drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:11: note: (near initialization for 'funcs.base')
drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:11: error: initialization of 'void (*)(struct msm_gpu *, struct msm_gem_submit *, struct msm_file_private *)' from incompatible pointer type 'void (*)(struct msm_gpu *, struct msm_gpu_state *, struct drm_printer *)' [-Werror=incompatible-pointer-types]
drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:11: note: (near initialization for 'funcs.base.submit')
drivers/gpu/drm/msm/adreno/a4xx_gpu.c:546:4: error: 'struct msm_gpu_funcs' has no member named 'show'
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:1460:4: error: 'struct msm_gpu_funcs' has no member named 'show'
drivers/gpu/drm/msm/adreno/a6xx_gpu.c:769:4: error: 'struct msm_gpu_funcs' has no member named 'show'
drivers/gpu/drm/msm/msm_gpu.c: In function 'msm_gpu_devcoredump_read':
drivers/gpu/drm/msm/msm_gpu.c:289:12: error: 'const struct msm_gpu_funcs' has no member named 'show'

Adjust the #ifdef to make it build again.

Fixes: c0fec7f562ec ("drm/msm/gpu: Capture the GPU state on a GPU hang")
Signed-off-by: Arnd Bergmann 
Signed-off-by: Rob Clark

drm/msm: Optimize adreno_show_object()

2018-12-11T18:07:03+00:00

When the userspace tries to read the crashstate dump, the read side
implementation in the driver currently ascii85 encodes all the binary
buffers and it does this each time the read system call is called.
A userspace tool like cat typically does a page by page read and the
number of read calls depends on the size of the data captured by the
driver. This is certainly not desirable and does not scale well with
large captures.

This patch encodes the buffer only once in the read path. With this there
is an immediate >10X speed improvement in crashstate save time.

Signed-off-by: Sharat Masetty 
Reviewed-by: Jordan Crouse 
Signed-off-by: Rob Clark

drm/msm: re-factor devfreq code

2018-10-04T13:14:20+00:00

The devfreq framework requires the drivers to provide busy time estimations.
The GPU driver relies on the hardware performance counteres for the busy time
estimations, but different hardware revisions have counters which can be
sourced from different clocks. So the busy time estimation will be target
dependent.  Additionally on targets where the clocks are completely controlled
by the on chip microcontroller, fetching and setting the current GPU frequency
will be different. This patch aims to embrace these differences by re-factoring
the devfreq code a bit.

Signed-off-by: Sharat Masetty 
Signed-off-by: Rob Clark

drm/msm: Add a helper function to parse clock names

2018-08-10T22:49:18+00:00

Add a helper function to parse the clock names and set up
the bulk data so we can take advantage of the bulk clock
functions instead of rolling our own. This is added
as a helper function so the upcoming a6xx GMU code can
also take advantage of it.

Signed-off-by: Jordan Crouse 
Signed-off-by: Rob Clark

drm/msm/gpu: avoid deprecated do_gettimeofday

2018-07-30T12:50:12+00:00

All users of do_gettimeofday() have been removed, but this one recently
crept in, along with an incorrect printing of the microseconds portion.

This converts it to using ktime_get_real_timespec64() as a direct
replacement, and adds the leading zeroes. I considered using monotonic
times (ktime_get()) instead, but as this timestamp appears to only
be used for humans rather than compared with other timestamps, the
real time domain is probably good enough.

Fixes: e43b045e2c82 ("drm/msm/gpu: Capture the state of the GPU")
Signed-off-by: Arnd Bergmann 
Signed-off-by: Rob Clark

drm/msm/gpu: Add the buffer objects from the submit to the crash dump

2018-07-30T12:50:10+00:00

For hangs, dump copy out the contents of the buffer objects attached to the
guilty submission and print them in the crash dump report.

Signed-off-by: Jordan Crouse 
Signed-off-by: Rob Clark