Commit Graph

722793 Commits

Author SHA1 Message Date
Feifei Xu
a629bf32df drm/amd/include:cleanup vega10 thm header files.
Cleanup asic_reg/vega10/THM folder.

Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:18 -05:00
Feifei Xu
6ce682251d drm/amd/include:cleanup vega10 athub header files.
Cleanup asic_reg/vega10/ATHUB folder,remove unused files.

Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:17 -05:00
Feifei Xu
a6651c98c6 drm/amd/include:cleanup vega10 mp header files.
Cleanup asic_reg/vega10/MP folder, remove mp_9_0_default.h

Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:17 -05:00
Feifei Xu
75199b8c7f drm/amd/include:cleanup vega10 hdp header files.
Cleanup asic_reg/vega10/HDP folder, remove hdp_4_0_default.h

Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:16 -05:00
Feifei Xu
812f77b749 drm/amd/include:cleanup vega10 sdma0/1 header files.
To remove include/asic_reg/vega10 folder,create IP folders sdma0/1.
This patch cleanup asic_reg/vega10/SDMA folders.

Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:16 -05:00
Monk Liu
ce1b1b66cd drm/amdgpu:partially revert 1cfd8e237f0318e330190ac21d63c58ae6a1f66c
found RING0 test fail after S3 resume regression, which is
introduced by 1cfd8e237f0318e330190ac21d63c58ae6a1f66c

Because after suspend VRAM will be cleared, so driver must
unpin the GART table(resident in VRAM) during suspend so it
can be evicted to system ram and must correspondingly pin it
during resume so the GART table could be restored to VRAM.

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:15 -05:00
Roger He
1bfcbad18f drm/ttm: roundup the shrink request to prevent skip huge pool
e.g. shrink reqeust is less than 512, the logic will skip huge pool

Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:15 -05:00
Roger He
444f8ef3f8 drm/ttm: add page order support in ttm_pages_put
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:15 -05:00
Roger He
154683dd39 drm/ttm: add set_pages_wb for handling page order more than zero
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:14 -05:00
Tony Cheng
0293bd519f drm/amd/display: dal 3.1.20
Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:14 -05:00
Andrew Jiang
621fd3e39f drm/amd/display: Set OPP default values in init_hw
On S3 resume, we do not reconstruct OPP, but we do need to
reinitialize some of its values to the default ones.
Therefore, move those lines out of the OPP constructor and
into init_hw.

Also reset the hubp power gated flag, since nothing is
power gated at init_hw.

Signed-off-by: Andrew Jiang <Andrew.Jiang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:14 -05:00
Tony Cheng
a2c7f9e893 drm/amd/display: dal 3.1.19
Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:13 -05:00
Anthony Koo
404dfe1c56 drm/amd/display: DMCU and ABM maintenance and refactor
Remove some globals that should really be per block state.

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:13 -05:00
Yongqiang Sun
8980aa3c9e drm/amd/display: Only program watermark for full update.
For scaling and position change, it isn't necessary to program
watermark and check P-State as well.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:13 -05:00
Tony Cheng
f97da580cf drm/amd/display: dal 3.1.18
Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:12 -05:00
Andrew Jiang
7260d1187e drm/amd/display: Set full update flag in dcn_validate_bandwidth
Doing bandwidth validation implies that this is a full update. Set the
flag inside the function in case whatever is calling
dcn_validate_bandwidth doesn't set it.

Signed-off-by: Andrew Jiang <Andrew.Jiang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:12 -05:00
Leo (Sunpeng) Li
27b3f4fc91 drm/amd/display: Do not program front-end twice
The sequence of front-end > back-end > front-end programming will
program the front-end more than once. Add a mode_changed flag, and use
it to determine whether the front-end should be programmed before, or
after back-end.

Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:11 -05:00
Leo (Sunpeng) Li
000b59ea9f drm/amd/display: Trigger full update on plane change
With the optimized DCN10 frontend programming code, things are
programmed only when requested. For now, trigger a full update on all
plane changes.

Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:11 -05:00
Dmytro Laktyushkin
69cff5a4e3 drm/amd/display: Rename output_bpc to opp_input_bpc
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:11 -05:00
Dmytro Laktyushkin
fb7ae8505e drm/amd/display: fix refclk conversion from khz int to mhz float
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:10 -05:00
Dmytro Laktyushkin
26247e7779 drm/amd/display: fix mpo validation failure
There was an error in translation of mode support check.
"N/A" is a failure condition while "" was a special case.
This change will differentiate between the two by using a
define.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:10 -05:00
Yue Hin Lau
e56dc89b3c drm/amd/display: move csc matrix to hw_shared
Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com>
Reviewed-by: Eric Bernstein <Eric.Bernstein@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:10 -05:00
Tony Cheng
c1f103fc20 drm/amd/display: dal 3.1.17
Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:09 -05:00
Yue Hin Lau
4a43586bac drm/amd/display: update output csc matrix values
Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:09 -05:00
Yongqiang Sun
675634c5ab drm/amd/display: Only update output transfer function for full type.
dcn10_translate_regamma_to_hw_format costs 750us to run, it cannot be
called within isr, check update flag before calling, only do it for
full update.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:09 -05:00
Tony Cheng
dce46c5320 drm/amd/display: performance profiling instrumentation
Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:08 -05:00
Harry Wentland
a9beb6c741 drm/amd/display: Remove unnecessary dc_link vtable
None of this needs to be a function table or dynamic in any way.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:08 -05:00
Yue Hin Lau
125d10a233 drm/amd/display: fix opp header register define
Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com>
Reviewed-by: Eric Bernstein <Eric.Bernstein@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:07 -05:00
Yongqiang Sun
480bd0cf45 drm/amd/display: Update dchub and dpp as per update flags.
Check update flags and update dchub and dpp as per flags,
reduce reg access from 347 to 200, duration time reduce
to 170us.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:07 -05:00
Yongqiang Sun
4f804817d5 drm/amd/display: Move update_plane_addr to apply_ctx_for_surface for dce.
Move update_plane_addr to apply_ctx_for_surface, address update will
just be called once, not twice for updat type is full and medium.
This will reduce some reg access and duration time.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:07 -05:00
Yue Hin Lau
afbeb2638b drm/amd/display: call set_mpc_output_csc from hwsequencer
Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com>
Reviewed-by: Eric Bernstein <Eric.Bernstein@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:06 -05:00
Michel Dänzer
96b8af6eb4 drm/amd/display: Fix description of module parameter dc_log
It was incorrectly referencing the dc parameter, resulting in an empty
description of the dc_log parameter.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:06 -05:00
Michel Dänzer
43fbcde020 drm/amdgpu: Downgrade DRM_ERROR to DRM_DEBUG in amdgpu_queue_mgr_map
Prevent buggy userspace from spamming dmesg.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:06 -05:00
Christian König
5b565e0e5a drm/amdgpu: expose the VA above the hole to userspace
Let userspace know how much area we have above the 48bit VA hole on
Vega10.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:05 -05:00
Christian König
4b7f0848c4 drm/amdgpu: use dev_dbg instead of dev_err in the VA IOCTL
Userspace buggy userspace can spam the logs.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:05 -05:00
Christian König
bb7939b203 drm/amdgpu: fix VA hole handling on Vega10 v3
Similar to the CPU address space the VA on Vega10 has a hole in it.

v2: use dev_dbg instead of dev_err
v3: add some more comments to explain how the hw works

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:05 -05:00
Christian König
6af046d26f drm/amdgpu: use the new TTM bytes moved counter v2
Instead of the global statistics use the per context bytes moved counter.

v2: rebased

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:04 -05:00
Christian König
dfb8fa9828 drm/amdgpu: forward operation context to ttm_bo_mem_space
This way we can finally use some more stats.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:04 -05:00
Christian König
3f3a7c8259 staging: vboxvideo: adapt to new TTM interface
Fixes interface changes done in the following commits:
drm/ttm: add operation ctx to ttm_bo_validate v2
drm/ttm: add context to driver move callback as well

I missed this driver because it is in the staging area.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:03 -05:00
Christian König
6cd2e71e89 drm/ttm: add number of bytes moved to the operation context
Add some statistics how many bytes we have moved.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:03 -05:00
Christian König
2823f4f019 drm/ttm: add context to driver move callback as well
Instead of passing the parameters manually.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:03 -05:00
Christian König
83876c1bed drm/ttm: use the operation context inside TTM
Instead of passing down the parameters manually to every function.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:02 -05:00
Christian König
c13c55d611 drm/ttm: use an operation context for ttm_bo_mem_space v2
Instead of specifying interruptible and no_wait_gpu manually.

v2: rebase

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:02 -05:00
Christian König
6fead44a4c drm/ttm: use an operation ctx for ttm_bo_init_reserved
Instead of specifying if sleeping should be interruptible.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:02 -05:00
Christian König
19be557010 drm/ttm: add operation ctx to ttm_bo_validate v2
Give moving a BO into place an operation context to work with.

v2: rebased

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:01 -05:00
Roger He
750a25037c drm/ttm: add page order in page pool
to indicate page order for each element in the pool

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:01 -05:00
Roger He
f991c0ec2b drm/ttm: use NUM_PAGES_TO_ALLOC always
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:00 -05:00
Ernst Sjöstrand
8cdbad98c5 drm/amd/powerplay: Followup fixes to mc_reg_address
This is a followup to:
drm/amd/powerplay: Fix buffer overflows with mc_reg_address

Rework *_set_mc_special_registers for the other architectures to
use the same logic as the first patch. This allows the last entry
of the array to be filled without an error message for example.
This doesn't fix any known problems, perhaps avoided by luck.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ernst Sjöstrand <ernstp@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:00 -05:00
Ernst Sjöstrand
47e8788b49 drm/amd/powerplay: Fix buffer overflows with mc_reg_address
Smatch warned about the following lines:
ci_set_mc_special_registers() error: buffer overflow 'table->mc_reg_address' 16 <= 16
tonga_set_mc_special_registers() error: buffer overflow 'table->mc_reg_address' 16 <= 16

Change the logic to check before access instead of after incrementing.
It's fine if j reaches max after we're done. This allows the last entry
of the array to be filled without an error message for example.
Changed some whitespace to clarify grouping.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ernst Sjöstrand <ernstp@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:48:00 -05:00
Ernst Sjöstrand
7d0331007a drm/amd/amdgpu: Fix missing null check in atombios_i2c.c
Reported by smatch:
amdgpu_atombios_i2c_process_i2c_ch() error: we previously assumed 'buf' could be null

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ernst Sjöstrand <ernstp@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-06 12:47:59 -05:00