Commit Graph

69565 Commits

Author SHA1 Message Date
Dave Airlie
0d2e90f47c Merge tag 'amd-drm-fixes-5.10-2020-10-09' of git://people.freedesktop.org/~agd5f/linux into drm-next
amd-drm-fixes-5.10-2020-10-09:

amdgpu:
- Clean up indirect register access
- Navy Flounder fixes
- SMU11 AC/DC interrupt fixes
- GPUVM alignment fix
- Display fixes
- Misc other fixes

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201009222810.4030-1-alexander.deucher@amd.com
2020-10-12 10:40:43 +10:00
Dave Airlie
2e49520eee Propagated from drm-intel-next-queued:
- Fix CRTC state checker (Ville)
 
 Propated from drm-intel-gt-next:
 - Avoid implicit vmpa for highmem on 32b (Chris)
 - Prevent PAT attriutes for writecombine if CPU doesn't support PAT (Chris)
 - Clear the buffer pool age before use. (Chris)
 - Fix error code (Dan)
 - Break up error capture compression loops (Chris)
 - Fix uninitialized variable in context_create_request (Maarten)
 - Check for errors on i915_vm_alloc_pt_stash to avoid NULL dereference (Matt)
 - Serialize debugfs i915_gem_objects with ctx->mutex (Chris)
 - Fix a rebase mistake caused during drm-intel-gt-next creation (Chris)
 - Hold request reference for canceling an active context (Chris)
 - Heartbeats fixes (Chris)
 - Use usigned during batch copies (Chris)
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Merge tag 'drm-intel-next-fixes-2020-10-02' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

Propagated from drm-intel-next-queued:
- Fix CRTC state checker (Ville)

Propated from drm-intel-gt-next:
- Avoid implicit vmpa for highmem on 32b (Chris)
- Prevent PAT attriutes for writecombine if CPU doesn't support PAT (Chris)
- Clear the buffer pool age before use. (Chris)
- Fix error code (Dan)
- Break up error capture compression loops (Chris)
- Fix uninitialized variable in context_create_request (Maarten)
- Check for errors on i915_vm_alloc_pt_stash to avoid NULL dereference (Matt)
- Serialize debugfs i915_gem_objects with ctx->mutex (Chris)
- Fix a rebase mistake caused during drm-intel-gt-next creation (Chris)
- Hold request reference for canceling an active context (Chris)
- Heartbeats fixes (Chris)
- Use usigned during batch copies (Chris)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201002182610.GA2204465@intel.com
2020-10-12 09:23:52 +10:00
Dave Airlie
083320ebe6 Three fixes for vc4 that addresses dual-display breakages
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Merge tag 'drm-misc-next-fixes-2020-10-02' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

Three fixes for vc4 that addresses dual-display breakages

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20201002065243.ry7gp4or3ywhluer@gilmour.lan
2020-10-10 05:44:48 +10:00
Ye Bin
9c27bc97af drm/amdgpu: Fix invalid number of character '{' in amdgpu_acpi_init
Fix follow warning:
Checking drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c...
[drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:770]: (error) Invalid number
of character '{' when these macros are defined: ''.
Checking drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: CONFIG_ACPI...
[drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:770]: (error) Invalid number
of character '{' when these macros are defined: 'CONFIG_ACPI'.
......
Checking drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: CONFIG_X86...
[drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:770]: (error) Invalid number
of character '{' when these macros are defined: 'CONFIG_X86'.
Checking drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: _X86_...
[drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:770]: (error) Invalid number
of character '{' when these macros are defined: '_X86_'.
Checking drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: __linux__...
[drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:770]: (error) Invalid number
of character '{' when these macros are defined: '__linux__'.

Fixes: 97d798b276 ("drm/amdgpu: simplify ATIF backlight handling")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-09 15:16:10 -04:00
Emily.Deng
b0047e53c4 drm/amdgpu: Remove warning for virtual_display
Remove the virtual_display warning in drm_crtc_vblank_off when
dev->num_crtcs is null.

Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Emily.Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-09 15:15:48 -04:00
kernel test robot
0224b2758f drm/amdgpu: kfd_initialized can be static
Fixes: c7651b7358 ("drm/amdgpu: Fix handling of KFD initialization failures")
Signed-off-by: kernel test robot <lkp@intel.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-09 15:15:04 -04:00
Evan Quan
3cb9d2416c drm/amd/pm: setup APU dpm clock table in SMU HW initialization
As the dpm clock table is needed during DC HW initialization.
And that (DC HW initialization) comes before smu_late_init()
where current APU dpm clock table setup is performed. So, NULL
pointer dereference will be triggered. By moving APU dpm clock
table setup to smu_hw_init(), this can be avoided.

Fixes: 02cf91c113 ("drm/amd/powerplay: postpone operations not required for hw setup to late_init")
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reported-by: Dirk Gouders <dirk@gouders.net>
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-09 15:14:36 -04:00
Alex Deucher
9142c4131a drm/amdgpu: prevent spurious warning
The default auto setting for kcq should not generate
a warning.

Fixes: a300de40f6 ("drm/amdgpu: introduce a new parameter to configure how many KCQ we want(v5)")
Reviewed-by: Kent Russell <kent.russell@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-09 15:14:10 -04:00
Alex Deucher
305a81bfbd drm/amdgpu/swsmu: fix ARC build errors
We want to use the dev_* functions here rather than the pr_* variants.
Switch to using dev_warn() which mirrors what we do on other asics.

Fixes the following build errors on ARC:

../drivers/gpu/drm/amd/amdgpu/../powerplay/navi10_ppt.c: In function 'navi10_fill_i2c_req':
../arch/arc/include/asm/bug.h:24:2: error: implicit declaration of function 'pr_warn'; did you mean 'drm_warn'? [-Werror=implicit-function-declaration]

../drivers/gpu/drm/amd/amdgpu/../powerplay/sienna_cichlid_ppt.c: In function 'sienna_cichlid_fill_i2c_req':
../arch/arc/include/asm/bug.h:24:2: error: implicit declaration of function 'pr_warn'; did you mean 'drm_warn'? [-Werror=implicit-function-declaration]

Reported-by: kernel test robot <lkp@intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Evan Quan <evan.quan@amd.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: linux-snps-arc@lists.infradead.org
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-09 15:13:49 -04:00
Dmytro Laktyushkin
dd7a595af1 drm/amd/display: Fix OPTC_DATA_FORMAT programming
This should be programmed with timing rather than with odm.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-09 15:12:32 -04:00
Alvin Lee
508300a571 drm/amd/display: Don't allow pstate if no support in blank
[Why]
We will hang if we report switch in VACTIVE but not in VBLANK and DPG_EN = 1

[How]
Block switch in ACTIVE if not supported in BLANK

Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-09 15:09:13 -04:00
Fangzhi Zuo
95d620adb4 drm/amd/display: HDMI remote sink need mode validation for Linux
[Why]
Currently mode validation is bypassed if remote sink exists. That
leads to mode set issue when a BW bottle neck exists in the link path,
e.g., a DP-to-HDMI converter that only supports HDMI 1.4.

Any invalid mode passed to Linux user space will cause the modeset
failure due to limitation of Linux user space implementation.

[How]
Mode validation is skipped only if in edid override. For real remote
sink, clock limit check should be done for HDMI remote sink.

Have HDMI related remote sink going through mode validation to
elimiate modes which pixel clock exceeds BW limitation.

Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-05 15:13:55 -04:00
Chris Park
dc3de51642 drm/amd/display: Change to correct unit on audio rate
[Why]
Formula uses kHz in their formula while our driver operates with Hz.

[How]
Divide audio rate by 1000 on the initial variable that is entered into formula.

Signed-off-by: Chris Park <Chris.Park@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Acked-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-05 15:13:47 -04:00
Rodrigo Siqueira
2f8be0e516 drm/amd/display: Avoid set zero in the requested clk
[Why]
Sometimes CRTCs can be disabled due to display unplugging or temporarily
transition in the userspace; in these circumstances, DCE tries to set
the minimum clock threshold. When we have this situation, the function
bw_calcs is invoked with number_of_displays set to zero, making DCE set
dispclk_khz and sclk_khz to zero. For these reasons, we have seen some
ATOM bios errors that look like:

[drm:atom_op_jump [amdgpu]] *ERROR* atombios stuck in loop for more than
5secs aborting
[drm:amdgpu_atom_execute_table_locked [amdgpu]] *ERROR* atombios stuck
executing EA8A (len 761, WS 0, PS 0) @ 0xEABA

[How]
This error happens due to an attempt to optimize the bandwidth using the
sclk, and the dispclk clock set to zero. Technically we handle this in
the function dce112_set_clock, but we are not considering the case that
this value is set to zero. This commit fixes this issue by ensuring that
we never set a minimum value below the minimum clock threshold.

Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-05 15:13:36 -04:00
Alex Sierra
79b1eca0e4 drm/amdgpu: align frag_end to covered address space
align frag_end to the next pd when there are no
page table entries on the current pde.
This fixes invalidation of larger address space areas
where some page tables are allocated and other aren't.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-05 15:13:28 -04:00
Dirk Gouders
2ae7870804 drm/amdgpu: fix NULL pointer dereference for Renoir
Commit c1cf79ca5c ("drm/amdgpu: use IP discovery table for renoir")
introduced a NULL pointer dereference when booting with
amdgpu.discovery=0, because it removed the call of vega10_reg_base_init()
for that case.

Fix this by calling that funcion if amdgpu_discovery == 0 in addition to
the case that amdgpu_discovery_reg_base_init() failed.

Fixes: c1cf79ca5c ("drm/amdgpu: use IP discovery table for renoir")
Signed-off-by: Dirk Gouders <dirk@gouders.net>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Cc: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-05 15:12:46 -04:00
Dave Airlie
edb899841c drm/vmwgfx: fix regression in thp code due to ttm init refactor.
When I refactored this code with the new init paths, I failed to
set the funcs back up properly, this caused a failure to bringup
gdm properly.

Fixes: 252f8d7b91 ("drm/vmwgfx/ttm: convert vram mm init to new code paths")
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201001042012.13114-1-airlied@gmail.com
2020-10-02 05:12:58 +10:00
Alex Deucher
234676d6db drm/amdgpu/swsmu: add interrupt work handler for smu11 parts
We need to schedule the smu AC/DC interrupt ack to avoid
potentially sleeping if the smu message mutex is contended.

Fixes: e1188aacad ("drm/amdgpu/smu11: add support for SMU AC/DC interrupts")
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-01 10:43:28 -04:00
Alex Deucher
1a8a763b21 drm/amdgpu/swsmu: add interrupt work function
So we can schedule work from interrupts.  This might include
long tasks or things that could sleep.

Fixes: e1188aacad ("drm/amdgpu/smu11: add support for SMU AC/DC interrupts")
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-01 10:43:10 -04:00
Hawking Zhang
346dbbb8f7 drm/amdgpu: enable GDDR6 save-restore support for navy_flounder
add mp0 11_0_11 for navy_flounder to the mem training
supported list, otherwise the modeprobe would fail
on navy_flounder with latest vbios.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-01 10:43:02 -04:00
Hawking Zhang
f7ee1874b0 drm/amdgpu: support indirect access reg outside of mmio bar (v2)
support both direct and indirect accessor in unified
helper functions.

v2: Retire indirect mmio access via mm_index/data

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-01 10:42:55 -04:00
Hawking Zhang
705a2b5ba0 drm/amdgpu: switch to indirect reg access helper
Switch WREG32/RREG32_PCIE to use indirect reg access
helper for soc15 and onwards

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-01 10:42:48 -04:00
Hawking Zhang
1bba36834c drm/amdgpu: add helper function for indirect reg access (v3)
Add helper function in order to remove RREG32/WREG32
in current pcie_rreg/wreg function for soc15 and
onwards adapters.
PCIE_INDEX/DATA pairs are used to access regsiters
outside of mmio bar in the helper functions.
The new helper functions help remove the recursion
of amdgpu_mm_rreg/wreg from pcie_rreg/wreg and
provide the oppotunity to centralize direct and
indirect access in a single function.

v2: Fixed typo and refine the comments

v3: Remove unnecessary volatile local variable

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-01 10:42:13 -04:00
Tomi Valkeinen
2101bfca57 drm: bridge: cdns-mhdp8546: fix compile warning
On x64 we get:

drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c:751:10: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '18446744073709551613' to '4294967293' [-Woverflow]

The registers are 32 bit, so fix by casting to u32.

Fixes: fb43aa0acd ("drm: bridge: Add support for Cadence MHDP8546 DPI/DP bridge")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Swapnil Jakhade <sjakhade@cadence.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200929091918.24813-1-tomi.valkeinen@ti.com
2020-10-01 12:49:22 +02:00
Ramesh Errabolu
f2fa07b39f drm/amd/amdkfd: Surface files in Sysfs to allow users to get number of
compute units that are in use.

[Why]
Allow user to know how many compute units (CU) are in use at any given
moment.

[How]
Surface files in Sysfs that allow user to determine the number of compute
units that are in use for a given process. One Sysfs file is used per
device.

Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Reviewed-By: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-30 15:26:27 -04:00
Ramesh Errabolu
43a4bc828c drm/amd/amdgpu: Define and implement a function that collects number of
waves that are in flight.

[Why]
Allow user to know how many compute units (CU) are in use at any given
moment.

[How]
Read registers of SQ that give number of waves that are in flight
of various queues. Use this information to determine number of CU's
in use.

Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Reviewed-By: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-30 15:26:27 -04:00
Chris Wilson
c60b93cd48 drm/i915: Avoid mixing integer types during batch copies
Be consistent and use unsigned long throughout the chunk copies to
avoid the inherent clumsiness of mixing integer types of different
widths and signs. Failing to take acount of a wider unsigned type when
using min_t can lead to treating it as a negative, only for it flip back
to a large unsigned value after passing a boundary check.

Fixes: ed13033f02 ("drm/i915/cmdparser: Only cache the dst vmap")
Testcase: igt/gen9_exec_parse/bb-large
Reported-by: "Candelaria, Jared" <jared.candelaria@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: "Candelaria, Jared" <jared.candelaria@intel.com>
Cc: "Bloomfield, Jon" <jon.bloomfield@intel.com>
Cc: <stable@vger.kernel.org> # v4.9+
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200928215942.31917-1-chris@chris-wilson.co.uk
(cherry picked from commit b7eeb2b413)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:54 -04:00
Chris Wilson
651dabe27f drm/i915/gem: Always test execution status on closing the context
Verify that if a context is active at the time it is closed, that it is
either persistent and preemptible (with hangcheck running) or it shall
be removed from execution.

Fixes: 9a40bddd47 ("drm/i915/gt: Expose heartbeat interval via sysfs")
Testcase: igt/gem_ctx_persistence/heartbeat-close
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.7+
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200928221510.26044-3-chris@chris-wilson.co.uk
(cherry picked from commit d3bb2f9b5e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:51 -04:00
Chris Wilson
ca65fc0d8e drm/i915/gt: Always send a pulse down the engine after disabling heartbeat
Currently, we check we can send a pulse prior to disabling the
heartbeat to verify that we can change the heartbeat, but since we may
re-evaluate execution upon changing the heartbeat interval we need another
pulse afterwards to refresh execution.

v2: Tvrtko asked if we could reduce the double pulse to a single, which
opened up a discussion of how we should handle the pulse-error after
attempting to change the property, and the desire to serialise
adjustment of the property with its validating pulse, and unwind upon
failure.

Fixes: 9a40bddd47 ("drm/i915/gt: Expose heartbeat interval via sysfs")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: <stable@vger.kernel.org> # v5.7+
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200928221510.26044-2-chris@chris-wilson.co.uk
(cherry picked from commit 3dd66a94de)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:48 -04:00
Chris Wilson
7d442ea7c5 drm/i915: Cancel outstanding work after disabling heartbeats on an engine
We only allow persistent requests to remain on the GPU past the closure
of their containing context (and process) so long as they are continuously
checked for hangs or allow other requests to preempt them, as we need to
ensure forward progress of the system. If we allow persistent contexts
to remain on the system after the the hangcheck mechanism is disabled,
the system may grind to a halt. On disabling the mechanism, we sent a
pulse along the engine to remove all executing contexts from the engine
which would check for hung contexts -- but we did not prevent those
contexts from being resubmitted if they survived the final hangcheck.

Fixes: 9a40bddd47 ("drm/i915/gt: Expose heartbeat interval via sysfs")
Testcase: igt/gem_ctx_persistence/heartbeat-stop
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.7+
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200928221510.26044-1-chris@chris-wilson.co.uk
(cherry picked from commit 7a991cd3e3)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:46 -04:00
Chris Wilson
3cfea8c97c drm/i915/gem: Hold request reference for canceling an active context
We have to be very careful while walking the timeline->requests list
under the RCU guard, as the requests (and so rq->link) use
SLAB_TYPESAFE_BY_RCU and so the requests may be reallocated within an
rcu grace period. As the requests are reallocated, they are removed from
one list and placed on another, and if we are iterating over that
request at that moment, the list iteration jumps from one list to the
next and promptly gets confused. Verify we hold the request reference
to ensure that the request is not added to a new list behind our backs.

<4> [582.745252] general protection fault, probably for non-canonical address 0xcccccccccccccd5c: 0000 [#1] PREEMPT SMP PTI
<4> [582.745297] CPU: 0 PID: 1475 Comm: gem_ctx_persist Not tainted 5.9.0-rc1-CI-CI_DRM_8908+ #1
<4> [582.745304] Hardware name: Intel Corporation NUC7CJYH/NUC7JYB, BIOS JYGLKCPX.86A.0027.2018.0125.1347 01/25/2018
<4> [582.745317] RIP: 0010:__lock_acquire+0x2c3/0x1f40
<4> [582.745323] Code: 00 65 8b 05 c7 8a ef 7e 85 c0 0f 85 b4 07 00 00 44 8b 9d c4 08 00 00 45 85 db 0f 84 0f 01 00 00 ba 05 00 00 00 e9 c8 06 00 00 <48> 81 3f c0 89 c7 82 b8 00 00 00 00 41 0f 45 c0 83 fe 01 41 89 c3
<4> [582.745334] RSP: 0018:ffffc9000461bc40 EFLAGS: 00010002
<4> [582.745340] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
<4> [582.745345] RDX: 0000000000000000 RSI: 0000000000000000 RDI: cccccccccccccd5c
<4> [582.745350] RBP: ffff8881ec4a2880 R08: 0000000000000001 R09: 0000000000000001
<4> [582.745356] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
<4> [582.745361] R13: 0000000000000000 R14: 0000000000000000 R15: cccccccccccccd5c
<4> [582.745367] FS:  00007fb44da78e40(0000) GS:ffff888278000000(0000) knlGS:0000000000000000
<4> [582.745373] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [582.745378] CR2: 00007fb44daad040 CR3: 0000000268428000 CR4: 0000000000350ef0
<4> [582.745383] Call Trace:
<4> [582.745390]  ? __lock_acquire+0x913/0x1f40
<4> [582.745397]  lock_acquire+0xb5/0x3c0
<4> [582.745526]  ? kill_engines+0x19a/0x4b0 [i915]
<4> [582.745533]  ? find_held_lock+0x2d/0x90
<4> [582.745541]  _raw_spin_lock_irq+0x30/0x40
<4> [582.745635]  ? kill_engines+0x19a/0x4b0 [i915]
<4> [582.745727]  kill_engines+0x19a/0x4b0 [i915]
<4> [582.745820]  context_close+0x195/0x410 [i915]
<4> [582.745912]  i915_gem_context_close+0x5b/0x160 [i915]
<4> [582.745994]  i915_driver_postclose+0x14/0x40 [i915]
<4> [582.746003]  drm_file_free.part.13+0x240/0x290
<4> [582.746009]  drm_release_noglobal+0x16/0x50
<4> [582.746016]  __fput+0xa5/0x250
<4> [582.746021]  task_work_run+0x6e/0xb0
<4> [582.746028]  exit_to_user_mode_prepare+0x178/0x180
<4> [582.746034]  syscall_exit_to_user_mode+0x36/0x220
<4> [582.746040]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
<4> [582.746045] RIP: 0033:0x7fb44d1dc421
<4> [582.746050] Code: f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 8b 05 ea cf 20 00 85 c0 75 16 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3f f3 c3 0f 1f 44 00 00 53 89 fb 48 83 ec 10
<4> [582.746062] RSP: 002b:00007ffed2e83818 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
<4> [582.746069] RAX: 0000000000000000 RBX: 0000556410bfe840 RCX: 00007fb44d1dc421
<4> [582.746075] RDX: 000000000000000a RSI: 00000000c0406469 RDI: 0000000000000008
<4> [582.746080] RBP: 0000000000000008 R08: 00007fb44d1c51cc R09: 00007fb44d1c5240
<4> [582.746086] R10: 0000000000000001 R11: 0000000000000246 R12: 00000000fffffffb
<4> [582.746091] R13: 0000000000000006 R14: 0000000000000000 R15: 000000000000000a
<4> [582.746099] Modules linked in: vgem mei_hdcp snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio btusb btrtl btbcm btintel x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul bluetooth ghash_clmulni_intel ecdh_generic ecc i915 r8169 realtek mei_me mei snd_hda_intel i2c_hid snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm pinctrl_geminilake pinctrl_intel prime_numbers [last unloaded: test_drm_mm]

Fixes: 736e785f9b ("drm/i915/gem: Reduce context termination list iteration guard to RCU")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200925101107.27869-2-chris@chris-wilson.co.uk
(cherry picked from commit badef44def)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:42 -04:00
Chris Wilson
5701a66edb drm/i915: Redo "Remove i915_request.lock requirement for execution callbacks"
The reordering and rebasing of commit 2e4c6c1a9d ("drm/i915: Remove
i915_request.lock requirement for execution callbacks") caused it to
revert an earlier correction. Let us restore commit 99f0a640d464
("drm/i915: Remove requirement for holding i915_request.lock for
breadcrumbs")

Fixes: 2e4c6c1a9d ("drm/i915: Remove i915_request.lock requirement for execution callbacks")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200925101107.27869-1-chris@chris-wilson.co.uk
(cherry picked from commit 35faeb7de9)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:40 -04:00
Chris Wilson
4fe9af8e88 drm/i915/gem: Serialise debugfs i915_gem_objects with ctx->mutex
Since the debugfs may peek into the GEM contexts as the corresponding
client/fd is being closed, we may try and follow a dangling pointer.
However, the context closure itself is serialised with the ctx->mutex,
so if we hold that mutex as we inspect the state coupled in the context,
we know the pointers within the context are stable and will remain valid
as we inspect their tables.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: CQ Tang <cq.tang@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200723172119.17649-3-chris@chris-wilson.co.uk
(cherry picked from commit 102f5aa491)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:37 -04:00
Matthew Auld
cef8ce5528 drm/i915: check i915_vm_alloc_pt_stash for errors
If we are really unlucky and encounter an error during
i915_vm_alloc_pt_stash, we end up passing an empty pt/pd stash all the
way down into the low-level ppgtt alloc code, leading to explosions,
since it expects at least the required number of pt/pd for the va range.

[  211.981418] BUG: kernel NULL pointer dereference, address: 0000000000000000
[  211.981421] #PF: supervisor read access in kernel mode
[  211.981422] #PF: error_code(0x0000) - not-present page
[  211.981424] PGD 80000008439cb067 P4D 80000008439cb067 PUD 84a37f067 PMD 0
[  211.981427] Oops: 0000 [#1] SMP PTI
[  211.981428] CPU: 1 PID: 1301 Comm: i915_selftest Tainted: G     U    I       5.9.0-rc5+ #3
[  211.981430] Hardware name:  /NUC6i7KYB, BIOS KYSKLi70.86A.0050.2017.0831.1924 08/31/2017
[  211.981521] RIP: 0010:__gen8_ppgtt_alloc+0x1ed/0x3c0 [i915]
[  211.981523] Code: c1 48 c7 c7 5d 5d fe c0 65 ff 0d ee 1d 03 3f e8 d9 91 1f e2 8b 55 c4 31 c0 48 8b 75 b8 85 d2 0f 95 c0 48 8b 1c c6 48 89 45 98 <48> 8b 03 48 8b 90 58 02 00 00 48 85 d2 0f 84 07 ea 15 00 48 81 fa
[  211.981526] RSP: 0018:ffffba2cc0eb3970 EFLAGS: 00010202
[  211.981527] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000004
[  211.981529] RDX: 0000000000000002 RSI: ffff9be998bdb8c0 RDI: ffff9be99c844300
[  211.981530] RBP: ffffba2cc0eb39d8 R08: 0000000000000640 R09: ffff9be97cdfd000
[  211.981531] R10: ffff9be97cdfd614 R11: 0000000000000000 R12: 0000000000000000
[  211.981532] R13: ffff9be98607ba20 R14: ffff9be995a0b400 R15: ffffba2cc0eb39e8
[  211.981534] FS:  00007f0f10b31000(0000) GS:ffff9be99fc40000(0000) knlGS:0000000000000000
[  211.981536] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  211.981538] CR2: 0000000000000000 CR3: 000000084d74e006 CR4: 00000000003706e0
[  211.981539] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  211.981541] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  211.981542] Call Trace:
[  211.981609]  gen8_ppgtt_alloc+0x79/0x90 [i915]
[  211.981678]  ppgtt_bind_vma+0x36/0x80 [i915]
[  211.981756]  __vma_bind+0x39/0x40 [i915]
[  211.981818]  fence_work+0x21/0x98 [i915]
[  211.981879]  fence_notify+0x8d/0x128 [i915]
[  211.981939]  __i915_sw_fence_complete+0x62/0x240 [i915]
[  211.982018]  i915_vma_pin_ww+0x1ee/0x9c0 [i915]

Fixes: cd0452aa2a ("drm/i915: Preallocate stashes for vma page-directories")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200921160844.73186-1-matthew.auld@intel.com
(cherry picked from commit 1604cb2aa7)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:35 -04:00
Maarten Lankhorst
159ace7ffe drm/i915: Fix uninitialised variable in intel_context_create_request.
In case backoff fails with an error, we return an undefined rq,
assign err to rq correctly.

Fixes: 8a929c9eb1 ("drm/i915: Use ww pinning for intel_context_create_request()")
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200918111208.1392128-1-maarten.lankhorst@linux.intel.com
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit 4316b19dee)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:32 -04:00
Chris Wilson
7d55531476 drm/i915: Break up error capture compression loops with cond_resched()
As the error capture will compress user buffers as directed to by the
user, it can take an arbitrary amount of time and space. Break up the
compression loops with a call to cond_resched(), that will allow other
processes to schedule (avoiding the soft lockups) and also serve as a
warning should we try to make this loop atomic in the future.

Testcase: igt/gem_exec_capture/many-*
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200916090059.3189-2-chris@chris-wilson.co.uk
(cherry picked from commit 293f43c80c)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:30 -04:00
Dan Carpenter
eb2a27086a drm/i915: Fix an error code i915_gem_object_copy_blt()
This code should use "vma[1]" instead of "vma".  The "vma" variable is a
valid pointer.

Fixes: 6b05030496 ("drm/i915: Convert i915_gem_object/client_blt.c to use ww locking as well, v2.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200911075243.GG12635@kadam
(cherry picked from commit 68ba71e3ae)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:28 -04:00
Chris Wilson
922d369b29 drm/i915/gt: Clear the buffer pool age before use
If we create a new node, it is possible for the slab allocator to return
us a recently freed node. If that node was just retired, it will retain
the current jiffy as its node->age. There is then a miniscule window,
where as that node is retired, it will appear on the free list with an
incorrect age and be eligible for reuse by one thread, and then by a
second thread as the correct node->age is written.

Fixes: 06b73c2d0b ("drm/i915/gt: Delay taking the spinlock for grabbing from the buffer pool")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200915091417.4086-3-chris@chris-wilson.co.uk
(cherry picked from commit 9bb34ff25c)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:23 -04:00
Chris Wilson
ba2ebf605d drm/i915/gem: Prevent using pgprot_writecombine() if PAT is not supported
Let's not try and use PAT attributes for I915_MAP_WC if the CPU doesn't
support PAT.

Fixes: 6056e50033 ("drm/i915/gem: Support discontiguous lmem object maps")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Cc: <stable@vger.kernel.org> # v5.6+
Link: https://patchwork.freedesktop.org/patch/msgid/20200915091417.4086-2-chris@chris-wilson.co.uk
(cherry picked from commit 121ba69ffd)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:20 -04:00
Chris Wilson
4caf017ee9 drm/i915/gem: Avoid implicit vmap for highmem on x86-32
On 32b, highmem using a finite set of indirect PTE (i.e. vmap) to provide
virtual mappings of the high pages.  As these are finite, map_new_virtual()
must wait for some other kmap() to finish when it runs out. If we map a
large number of objects, there is no method for it to tell us to release
the mappings, and we deadlock.

However, if we make an explicit vmap of the page, that uses a larger
vmalloc arena, and also has the ability to tell us to release unwanted
mappings. Most importantly, it will fail and propagate an error instead
of waiting forever.

Fixes: fb8621d3be ("drm/i915: Avoid allocating a vmap arena for a single page") #x86-32
References: e87666b52f ("drm/i915/shrinker: Hook up vmap allocation failure notifier")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Cc: <stable@vger.kernel.org> # v4.7+
Link: https://patchwork.freedesktop.org/patch/msgid/20200915091417.4086-1-chris@chris-wilson.co.uk
(cherry picked from commit 060bb115c2)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-09-30 14:24:17 -04:00
Jiansong Chen
39ad082459 drm/amdgpu: disable gfxoff temporarily for navy_flounder
gfxoff is temporarily disabled for navy_flounder, since
at present the feature caused some tdr when performing
display operations.

Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-30 13:53:21 -04:00
Guchun Chen
4a20300bc2 drm/amdgpu: drop duplicated ecc check for vega10 (v5)
The same ECC check has been executed in amdgpu_ras_init for vega10,
prior to gmc_v9_0_late_init.

v2: drop all atombios helper callings
v3: use bit operation
v4: correct inline comment, remove parity check statement
v5: squash in build fix

Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-30 13:53:21 -04:00
Dmytro Laktyushkin
d3768874e5 drm/amd/display: add pipe reassignment prevention code to dcn3
Add code to gracefuly handle any pipe reassignment
occuring on dcn3 hardware. This should only happen when new
surfaces are used for an update rather than old ones updated.

Fixes: 69fc1f4b97 ("amd/drm/display: avoid dcn3 on flip opp change for slave pipes")
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-30 13:50:22 -04:00
Oak Zeng
8ffff9b449 drm/amdgpu: use function pointer for gfxhub functions
gfxhub functions are now called from function pointers,
instead of from asic-specific functions.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-30 13:50:13 -04:00
Ramesh Errabolu
825c91d090 drm/amd/amdgpu: Prepare implementation to support reporting of CU usage
[Why]
Allow user to know number of compute units (CU) that are in use at any
given moment.

[How]
Read registers of SQ that give number of waves that are in flight
of various queues. Use this information to determine number of CU's
in use.

Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-30 13:50:06 -04:00
Ramesh Errabolu
b8810a142a drm/amd/amdgpu: Clean up header file of symbols that are defined to be static
[Why]
Header file exports functions get_gpu_clock_counter(), get_cu_info() and
select_se_sh() that are defined to be static

Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-30 13:49:44 -04:00
Kent Russell
f94582e4bc drm/amdgpu: Use SKU instead of DID for FRU check v2
The VG20 DIDs 66a0, 66a1 and 66a4 are used for various SKUs that may or may
not have the FRU EEPROM on it. Parse the VBIOS to check for server SKU
variants (D131 or D134) until a more general solution can be determined.

v2: Remove string-based logic, correct the VBIOS string comment

Signed-off-by: Kent Russell <kent.russell@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-29 16:14:09 -04:00
Alex Deucher
485d531c69 drm/amdgpu/swsmu/smu12: fix force clock handling for mclk
The state array is in the reverse order compared to other asics
(high to low rather than low to high).

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1313
Reviewed-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-29 16:14:03 -04:00
Dirk Gouders
808ec542c0 drm/amd/display: remove duplicate call to rn_vbios_smu_get_smu_version()
Commit 78fe9f6394 ("drm/amd/display: Remove DISPCLK Limit Floor for Certain SMU Versions")
added a call to rn_vbios_smu_get_smu_version() to set clk_mgr->smu_ver.
That field is initialized prior to the if-statement, already.

Fixes: 78fe9f6394 (drm/amd/display: Remove DISPCLK Limit Floor for Certain SMU Versions)
Signed-off-by: Dirk Gouders <dirk@gouders.net>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Sung Lee <sung.lee@amd.com>
Cc: Yongqiang Sun <yongqiang.sun@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-29 16:12:36 -04:00
Xiaojian Du
12a6727dee drm/amd/powerplay: add one sysfs file to support the feature to modify gfx clock on Raven/Raven2/Picasso APU.
This patch is to add one sysfs file -- "pp_od_clk_voltage" for
Raven/Raven2/Picasso APU, which is only used by dGPU like VEGA10.
This sysfs file supports the feature to modify gfx engine clock(Mhz units), it can
be used to configure the min value and the max value for gfx clock limited in the
safe range.

Command guide:
echo "s level clock" > pp_od_clk_voltage
	s - adjust teh sclk level
	level - 0 or 1, "0" represents the min value, "1" represents the max value
	clock - the clock value(Mhz units), like 400, 800 or 1200, the value must be within the
                OD_RANGE limits.
Example:
$ cat pp_od_clk_voltage
OD_SCLK:
0:        200Mhz
1:       1400Mhz
OD_RANGE:
SCLK:     200MHz       1400MHz

$ echo "s 0 600" > pp_od_clk_voltage
$ echo "s 1 1000" > pp_od_clk_voltage
$ cat pp_od_clk_voltage
OD_SCLK:
0:        600Mhz
1:       1000Mhz
OD_RANGE:
SCLK:     200MHz       1400MHz

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-29 16:12:16 -04:00