Commit Graph

32 Commits

Author SHA1 Message Date
Yintian Tao d2790e10d3 drm/amdgpu: no need to clean debugfs at amdgpu
drm_minor_unregister will invoke drm_debugfs_cleanup
to clean all the child node under primary minor node.
We don't need to invoke amdgpu_debugfs_fini and
amdgpu_debugfs_regs_cleanup to clean agian.
Otherwise, it will raise the NULL pointer like below.
[   45.046029] BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8
[   45.047256] PGD 0 P4D 0
[   45.047713] Oops: 0002 [#1] SMP PTI
[   45.048198] CPU: 0 PID: 2796 Comm: modprobe Tainted: G        W  OE     4.18.0-15-generic #16~18.04.1-Ubuntu
[   45.049538] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[   45.050651] RIP: 0010:down_write+0x1f/0x40
[   45.051194] Code: 90 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 ce d9 ff ff 48 ba 01 00 00 00 ff ff ff ff 48 89 d8 <f0> 48 0f c1 10 85 d2 74 05 e8 53 1c ff ff 65 48 8b 04 25 00 5c 01
[   45.053702] RSP: 0018:ffffad8f4133fd40 EFLAGS: 00010246
[   45.054384] RAX: 00000000000000a8 RBX: 00000000000000a8 RCX: ffffa011327dd814
[   45.055349] RDX: ffffffff00000001 RSI: 0000000000000001 RDI: 00000000000000a8
[   45.056346] RBP: ffffad8f4133fd48 R08: 0000000000000000 R09: ffffffffc0690a00
[   45.057326] R10: ffffad8f4133fd58 R11: 0000000000000001 R12: ffffa0113cff0300
[   45.058266] R13: ffffa0113c0a0000 R14: ffffffffc0c02a10 R15: ffffa0113e5c7860
[   45.059221] FS:  00007f60d46f9540(0000) GS:ffffa0113fc00000(0000) knlGS:0000000000000000
[   45.060809] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   45.061826] CR2: 00000000000000a8 CR3: 0000000136250004 CR4: 00000000003606f0
[   45.062913] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   45.064404] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   45.065897] Call Trace:
[   45.066426]  debugfs_remove+0x36/0xa0
[   45.067131]  amdgpu_debugfs_ring_fini+0x15/0x20 [amdgpu]
[   45.068019]  amdgpu_debugfs_fini+0x2c/0x50 [amdgpu]
[   45.068756]  amdgpu_pci_remove+0x49/0x70 [amdgpu]
[   45.069439]  pci_device_remove+0x3e/0xc0
[   45.070037]  device_release_driver_internal+0x18a/0x260
[   45.070842]  driver_detach+0x3f/0x80
[   45.071325]  bus_remove_driver+0x59/0xd0
[   45.071850]  driver_unregister+0x2c/0x40
[   45.072377]  pci_unregister_driver+0x22/0xa0
[   45.073043]  amdgpu_exit+0x15/0x57c [amdgpu]
[   45.073683]  __x64_sys_delete_module+0x146/0x280
[   45.074369]  do_syscall_64+0x5a/0x120
[   45.074916]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

v2: remove all debugfs cleanup/fini code at amdgpu
v3: squash in unused variable removal

Signed-off-by: Yintian Tao <yttao@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-28 16:59:22 -05:00
Alex Deucher d090e7db5a drm/amdgpu/display: move debugfs init into core amdgpu debugfs (v2)
In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for display.

v2: add config guard for DC

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Harry Wentland <harry.wentland@amd.com> (v1)
Acked-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:13 -05:00
Alex Deucher fd23cfcc2e drm/amdgpu/ring: move debugfs init into core amdgpu debugfs
In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for rings.

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:12 -05:00
Alex Deucher cd9e29e717 drm/amdgpu/firmware: move debugfs init into core amdgpu debugfs
In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for firmware.

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:12 -05:00
Alex Deucher f9d64e6c4a drm/amdgpu/regs: move debugfs init into core amdgpu debugfs
In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for register access files.

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:12 -05:00
Alex Deucher 3f5cea671c drm/amdgpu/gem: move debugfs init into core amdgpu debugfs
In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for gem.

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:12 -05:00
Alex Deucher 24038d581c drm/amdgpu/fence: move debugfs init into core amdgpu debugfs
In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for fence handling.

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:12 -05:00
Alex Deucher 15997544a3 drm/amdgpu/sa: move debugfs init into core amdgpu debugfs
In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for SA (sub allocator).

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:12 -05:00
Alex Deucher a4c5b1bb7b drm/amdgpu/pm: move debugfs init into core amdgpu debugfs
In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for pm.

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:12 -05:00
Alex Deucher c5820361da drm/amdgpu/ttm: move debugfs init into core amdgpu debugfs
In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for ttm.

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:12 -05:00
Alex Deucher 923ffa6b02 drm/amdgpu: rename amdgpu_debugfs_preempt_cleanup
to amdgpu_debugfs_fini.  It will be used for other things in
the future.

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:21:12 -05:00
Tom St Denis 669e2f91e4 drm/amd/amdgpu: Add gfxoff debugfs entry
Write a 32-bit value of zero to disable GFXOFF and write a 32-bit
value of non-zero to enable GFXOFF.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:17:33 -05:00
Alex Deucher a9ffe2a983 drm/amdgpu/debugfs: properly handle runtime pm
If driver debugfs files are accessed, power up the GPU
when necessary.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-14 10:20:34 -05:00
zhengbin c5b2bd5d39 drm/amdgpu: use true, false for bool variable in amdgpu_debugfs.c
Fixes coccicheck warning:

drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:132:2-10: WARNING: Assignment of 0/1 to bool variable
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:140:2-10: WARNING: Assignment of 0/1 to bool variable
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:142:13-21: WARNING: Assignment of 0/1 to bool variable

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-12-23 15:00:01 -05:00
Andrey Grodzovsky a28fda312a drm/amdgpu: Avoid accidental thread reactivation.
Problem:
During GPU reset we call the GPU scheduler to suspend it's
thread, those two functions in amdgpu also suspend and resume
the sceduler for their needs but this can collide with GPU
reset in progress and accidently restart a suspended thread
before time.

Fix:
Serialize with GPU reset.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-07 18:08:07 -05:00
Geert Uytterhoeven 44b582b32a drm/amdgpu: Remove superfluous void * cast in debugfs_create_file() call
There is no need to cast a typed pointer to a void pointer when calling
a function that accepts the latter.  Remove it, as the cast prevents
further compiler checks.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-10-30 11:06:51 -04:00
zhong jiang 2032324682 drm/amdgpu: remove the redundant null checks
debugfs_remove and kfree has taken the null check in account.
hence it is unnecessary to check it. Just remove the condition.
No functional change.

This issue was detected by using the Coccinelle software.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-09-16 10:42:56 -05:00
Wang Xiayang 929e571c04 drm/amdgpu: fix a potential information leaking bug
Coccinelle reports a path that the array "data" is never initialized.
The path skips the checks in the conditional branches when either
of callback functions, read_wave_vgprs and read_wave_sgprs, is not
registered. Later, the uninitialized "data" array is read
in the while-loop below and passed to put_user().

Fix the path by allocating the array with kcalloc().

The patch is simplier than adding a fall-back branch that explicitly
calls memset(data, 0, ...). Also it does not need the multiplication
1024*sizeof(*data) as the size parameter for memset() though there is
no risk of integer overflow.

Signed-off-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-31 01:26:09 -05:00
Tom St Denis 88891430a2 drm/amd/amdgpu: Fix offset for vmid selection in debugfs interface
The register debugfs interface was using the wrong bitmask for vmid
selection for GFX_CNTL.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17 13:34:30 -05:00
Tom St Denis 0fa4246e8e drm/amd/amdgpu: Add VMID to SRBM debugfs bank selection
Add 5 bits to the offset for SRBM selection to handle VMIDs.  Also
update the select_me_pipe_q() callback to also select VMID.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16 13:08:38 -05:00
Alex Deucher d7929c1e13 Merge branch 'drm-next' into drm-next-5.3
Backmerge drm-next and fix up conflicts due to drmP.h removal.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-25 08:42:25 -05:00
Jack Xiao 80f8fb9178 drm/amdgpu: mark the partial job as preempted in mcbp unit test
In mcbp unit test, the test should detect the preempted job which may
be a partial execution ib and mark it as preempted; so that the gfx
block can correctly generate PM4 frame.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-21 18:58:21 -05:00
Jack Xiao 6698a3d05f drm/amdgpu: add mcbp unit test in debugfs (v3)
The MCBP unit test is used to test the functionality of MCBP.
It emualtes to send preemption request and resubmit the unfinished
jobs.

v2: squash in fixes (Alex)
v3: squash in memory leak fix (Jack)

Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-21 18:58:21 -05:00
Sam Ravnborg fdf2f6c56e drm/amd: drop use of drmP.h in amdgpu/amdgpu*
Drop use of drmP.h in all files named amdgpu*
in drm/amd/amdgpu/

Fix fallout.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190609220757.10862-10-sam@ravnborg.org
2019-06-10 23:02:48 +02:00
Kevin Wang 4a5a2de666 drm/amd/powerplay: implement sysfs of amdgpu_get_busy_percent for smu11
add interface amdgpu_get_busy_percent for smu11

v2: convert data pointer type to uint32_t *.

Signed-off-by: Kevin Wang <Kevin1.Wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:03:57 -05:00
Alex Deucher 7a5e0d9ab6 drm/amdgpu: don't clamp debugfs register access to the BAR size
This prevents us from accessing extended registers in tools like
umr.  The register access functions already check if the offset
is beyond the BAR size and use the indirect accessors with locking
so this is safe.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-13 17:51:41 -05:00
Dan Carpenter d344b21bf4 drm/amd/amdgpu: Fix debugfs error handling
The error handling is wrong and "ent" could be NULL we when dereference
it to get "ent->d_inode".

The thing is that normally debugfs_create_file() is not supposed to
require (or have) any error handling.  That function does return error
pointers if debugfs is turned off but we know it's enable here.  When
it's enabled, then it returns NULL on error.

So what I did was I stripped out all the error handling except around
the i_size_write().  I could have just used a NULL check instead of an
IS_ERR_OR_NULL() but I figured this was more clear because that way you
don't have to look at the surrounding code to see whether debugfs is
enabled or not.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-10-16 15:10:34 -05:00
Tom St Denis 7e4237dbe4 drm/amd/amdgpu: Add some documentation to the debugfs entries
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:44:19 -05:00
Rex Zhu b13aa1091f drm/amdgpu: Use dpm_enabled as dpm state flag
driver will set dpm_enabled to true only when
module parameter amdgpu_dpm not equal to 0 and
smu hw initialize successfully.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:49 -05:00
Andrey Grodzovsky f7a9ee81a8 drm/amdgpu: Add support for SRBM selection v3
Also remove code duplication in write and read regs functions.
This also fixes potential missing unlock in amdgpu_debugfs_regs_write
in case get_user would fail.

v2: Add SRBM mutex locking.
v3: Fix TO counter and fix comment location.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-03 13:08:44 -05:00
Christian König 87e90c76e0 drm/amdgpu: add amdgpu_evict_gtt debugfs entry
Allow evicting all BOs from the GTT domain.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexdeucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-07 16:10:12 -05:00
Alex Deucher 75758255dc drm/amdgpu: move debugfs functions to their own file
amdgpu_device.c was getting pretty cluttered.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-18 10:59:01 -05:00