linux-stable.git/drivers/gpu/drm/amd, branch v5.4.71

drm/amdgpu: prevent double kfree ttm->sg

2020-10-14T08:33:02+00:00

[ Upstream commit 1d0e16ac1a9e800598dcfa5b6bc53b704a103390 ]

Set ttm->sg to NULL after kfree, to avoid memory corruption backtrace:

[  420.932812] kernel BUG at
/build/linux-do9eLF/linux-4.15.0/mm/slub.c:295!
[  420.934182] invalid opcode: 0000 [#1] SMP NOPTI
[  420.935445] Modules linked in: xt_conntrack ipt_MASQUERADE
[  420.951332] Hardware name: Dell Inc. PowerEdge R7525/0PYVT1, BIOS
1.5.4 07/09/2020
[  420.952887] RIP: 0010:__slab_free+0x180/0x2d0
[  420.954419] RSP: 0018:ffffbe426291fa60 EFLAGS: 00010246
[  420.955963] RAX: ffff9e29263e9c30 RBX: ffff9e29263e9c30 RCX:
000000018100004b
[  420.957512] RDX: ffff9e29263e9c30 RSI: fffff3d33e98fa40 RDI:
ffff9e297e407a80
[  420.959055] RBP: ffffbe426291fb00 R08: 0000000000000001 R09:
ffffffffc0d39ade
[  420.960587] R10: ffffbe426291fb20 R11: ffff9e49ffdd4000 R12:
ffff9e297e407a80
[  420.962105] R13: fffff3d33e98fa40 R14: ffff9e29263e9c30 R15:
ffff9e2954464fd8
[  420.963611] FS:  00007fa2ea097780(0000) GS:ffff9e297e840000(0000)
knlGS:0000000000000000
[  420.965144] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  420.966663] CR2: 00007f16bfffefb8 CR3: 0000001ff0c62000 CR4:
0000000000340ee0
[  420.968193] Call Trace:
[  420.969703]  ? __page_cache_release+0x3c/0x220
[  420.971294]  ? amdgpu_ttm_tt_unpopulate+0x5e/0x80 [amdgpu]
[  420.972789]  kfree+0x168/0x180
[  420.974353]  ? amdgpu_ttm_tt_set_user_pages+0x64/0xc0 [amdgpu]
[  420.975850]  ? kfree+0x168/0x180
[  420.977403]  amdgpu_ttm_tt_unpopulate+0x5e/0x80 [amdgpu]
[  420.978888]  ttm_tt_unpopulate.part.10+0x53/0x60 [amdttm]
[  420.980357]  ttm_tt_destroy.part.11+0x4f/0x60 [amdttm]
[  420.981814]  ttm_tt_destroy+0x13/0x20 [amdttm]
[  420.983273]  ttm_bo_cleanup_memtype_use+0x36/0x80 [amdttm]
[  420.984725]  ttm_bo_release+0x1c9/0x360 [amdttm]
[  420.986167]  amdttm_bo_put+0x24/0x30 [amdttm]
[  420.987663]  amdgpu_bo_unref+0x1e/0x30 [amdgpu]
[  420.989165]  amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu+0x9ca/0xb10
[amdgpu]
[  420.990666]  kfd_ioctl_alloc_memory_of_gpu+0xef/0x2c0 [amdgpu]

Signed-off-by: Philip Yang 
Reviewed-by: Felix Kuehling 
Reviewed-by: Christian König 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config

2020-10-07T06:01:25+00:00

commit a39d0d7bdf8c21ac7645c02e9676b5cb2b804c31 upstream.

A recent attempt to fix a ref count leak in
amdgpu_display_crtc_set_config() turned out to be doing too much and
"fixed" an intended decrease as if it were a leak. Undo that part to
restore the proper balance. This is the very nature of this function
to increase or decrease the power reference count depending on the
situation.

Consequences of this bug is that the power reference would
eventually get down to 0 while the display was still in use,
resulting in that display switching off unexpectedly.

Signed-off-by: Jean Delvare 
Fixes: e008fa6fb415 ("drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config")
Cc: stable@vger.kernel.org
Cc: Navid Emamdoost 
Cc: Alex Deucher 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/amdgpu/dc: Require primary plane to be enabled whenever the CRTC is

2020-10-01T11:18:15+00:00

[ Upstream commit 2f228aab21bbc74e90e267a721215ec8be51daf7 ]

Don't check drm_crtc_state::active for this either, per its
documentation in include/drm/drm_crtc.h:

 * Hence drivers must not consult @active in their various
 * &drm_mode_config_funcs.atomic_check callback to reject an atomic
 * commit.

atomic_remove_fb disables the CRTC as needed for disabling the primary
plane.

This prevents at least the following problems if the primary plane gets
disabled (e.g. due to destroying the FB assigned to the primary plane,
as happens e.g. with mutter in Wayland mode):

* The legacy cursor ioctl returned EINVAL for a non-0 cursor FB ID
  (which enables the cursor plane).
* If the cursor plane was enabled, changing the legacy DPMS property
  value from off to on returned EINVAL.

v2:
* Minor changes to code comment and commit log, per review feedback.

GitLab: https://gitlab.gnome.org/GNOME/mutter/-/issues/1108
GitLab: https://gitlab.gnome.org/GNOME/mutter/-/issues/1165
GitLab: https://gitlab.gnome.org/GNOME/mutter/-/issues/1344
Suggested-by: Daniel Vetter 
Acked-by: Daniel Vetter 
Reviewed-by: Nicholas Kazlauskas 
Signed-off-by: Michel Dänzer 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: update nv1x stutter latencies

2020-10-01T11:18:15+00:00

[ Upstream commit c4790a8894232f39c25c7c546c06efe074e63384 ]

[why]
Recent characterization shows increased stutter latencies on some SKUs,
leading to underflow.

[how]
Update SOC params to account for this worst case latency.

Signed-off-by: Jun Lei 
Acked-by: Aurabindo Pillai 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amdkfd: fix a memory leak issue

2020-10-01T11:18:15+00:00

[ Upstream commit 087d764159996ae378b08c0fdd557537adfd6899 ]

In the resume stage of GPU recovery, start_cpsch will call pm_init
which set pm->allocated as false, cause the next pm_release_ib has
no chance to release ib memory.

Add pm_release_ib in stop_cpsch which will be called in the suspend
stage of GPU recovery.

Reviewed-by: Felix Kuehling 
Signed-off-by: Dennis Li 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amdkfd: fix restore worker race condition

2020-10-01T11:18:03+00:00

[ Upstream commit f7646585a30ed8ef5ab300d4dc3b0c1d6afbe71d ]

In free memory of gpu path, remove bo from validate_list to make sure
restore worker don't access the BO any more, then unregister bo MMU
interval notifier. Otherwise, the restore worker will crash in the
middle of validating BO user pages if MMU interval notifer is gone.

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

drm/amdgpu/sriov add amdgpu_amdkfd_pre_reset in gpu reset

2020-10-01T11:17:54+00:00

[ Upstream commit 04bef61e5da18c2b301c629a209ccdba4d4c6fbb ]

kfd_pre_reset will free mem_objs allocated by kfd_gtt_sa_allocate

Without this change, sriov tdr code path will never free those allocated
memories and get memory leak.

v2:add a bugfix for kiq ring test fail

Signed-off-by: Jack Zhang 
Reviewed-by: Monk Liu 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amdgpu/vcn2.0: stall DPG when WPTR/RPTR reset

2020-10-01T11:17:52+00:00

[ Upstream commit ef563ff403404ef2f234abe79bdd9f04ab6481c9 ]

Add vcn dpg harware synchronization to fix race condition
issue between vcn driver and hardware.

Signed-off-by: James Zhu 
Reviewed-by: Leo Liu 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

PCI: Use ioremap(), not phys_to_virt() for platform ROM

2020-10-01T11:17:51+00:00

[ Upstream commit 72e0ef0e5f067fd991f702f0b2635d911d0cf208 ]

On some EFI systems, the video BIOS is provided by the EFI firmware.  The
boot stub code stores the physical address of the ROM image in pdev->rom.
Currently we attempt to access this pointer using phys_to_virt(), which
doesn't work with CONFIG_HIGHMEM.

On these systems, attempting to load the radeon module on a x86_32 kernel
can result in the following:

  BUG: unable to handle page fault for address: 3e8ed03c
  #PF: supervisor read access in kernel mode
  #PF: error_code(0x0000) - not-present page
  *pde = 00000000
  Oops: 0000 [#1] PREEMPT SMP
  CPU: 0 PID: 317 Comm: systemd-udevd Not tainted 5.6.0-rc3-next-20200228 #2
  Hardware name: Apple Computer, Inc. MacPro1,1/Mac-F4208DC8, BIOS     MP11.88Z.005C.B08.0707021221 07/02/07
  EIP: radeon_get_bios+0x5ed/0xe50 [radeon]
  Code: 00 00 84 c0 0f 85 12 fd ff ff c7 87 64 01 00 00 00 00 00 00 8b 47 08 8b 55 b0 e8 1e 83 e1 d6 85 c0 74 1a 8b 55 c0 85 d2 74 13 <80> 38 55 75 0e 80 78 01 aa 0f 84 a4 03 00 00 8d 74 26 00 68 dc 06
  EAX: 3e8ed03c EBX: 00000000 ECX: 3e8ed03c EDX: 00010000
  ESI: 00040000 EDI: eec04000 EBP: eef3fc60 ESP: eef3fbe0
  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010206
  CR0: 80050033 CR2: 3e8ed03c CR3: 2ec77000 CR4: 000006d0
  Call Trace:
   r520_init+0x26/0x240 [radeon]
   radeon_device_init+0x533/0xa50 [radeon]
   radeon_driver_load_kms+0x80/0x220 [radeon]
   drm_dev_register+0xa7/0x180 [drm]
   radeon_pci_probe+0x10f/0x1a0 [radeon]
   pci_device_probe+0xd4/0x140

Fix the issue by updating all drivers which can access a platform provided
ROM. Instead of calling the helper function pci_platform_rom() which uses
phys_to_virt(), call ioremap() directly on the pdev->rom.

radeon_read_platform_bios() previously directly accessed an __iomem
pointer. Avoid this by calling memcpy_fromio() instead of kmemdup().

pci_platform_rom() now has no remaining callers, so remove it.

Link: https://lore.kernel.org/r/20200319021623.5426-1-mikel@mikelr.com
Signed-off-by: Mikel Rychliski 
Signed-off-by: Bjorn Helgaas 
Acked-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Stop if retimer is not available

2020-10-01T11:17:40+00:00

[ Upstream commit a0e40018dcc3f59a10ca21d58f8ea8ceb1b035ac ]

Raven provides retimer feature support that requires i2c interaction in
order to make it work well, all settings required for this configuration
are loaded from the Atom bios which include the i2c address. If the
retimer feature is not available, we should abort the attempt to set
this feature, otherwise, it makes the following line return
I2C_CHANNEL_OPERATION_NO_RESPONSE:

 i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer));
 ...
 if (!i2c_success)
   ASSERT(i2c_success);

This ends up causing problems with hotplugging HDMI displays on Raven,
and causes retimer settings to warn like so:

WARNING: CPU: 1 PID: 429 at
drivers/gpu/drm/amd/amdgpu/../dal/dc/core/dc_link.c:1998
write_i2c_retimer_setting+0xc2/0x3c0 [amdgpu] Modules linked in:
edac_mce_amd ccp kvm irqbypass binfmt_misc crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel snd_hda_codec_realtek snd_hda_codec_generic
ledtrig_audio snd_hda_codec_hdmi snd_hda_intel amdgpu(+) snd_hda_codec
snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event
snd_rawmidi aesni_intel snd_seq amd_iommu_v2 gpu_sched aes_x86_64
crypto_simd cryptd glue_helper snd_seq_device ttm drm_kms_helper
snd_timer eeepc_wmi wmi_bmof asus_wmi sparse_keymap drm mxm_wmi snd
k10temp fb_sys_fops syscopyarea sysfillrect sysimgblt soundcore joydev
input_leds mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables
x_tables autofs4 igb i2c_algo_bit hid_generic usbhid i2c_piix4 dca ahci
hid libahci video wmi gpio_amdpt gpio_generic CPU: 1 PID: 429 Comm:
systemd-udevd Tainted: G        W         5.2.0-rc1sept162019+ #1
Hardware name: System manufacturer System Product Name/ROG STRIX B450-F
GAMING, BIOS 2605 08/06/2019
RIP: 0010:write_i2c_retimer_setting+0xc2/0x3c0 [amdgpu]
Code: ff 0f b6 4d ce 44 0f b6 45 cf 44 0f b6 c8 45 89 cf 44 89 e2 48 c7
c6 f0 34 bc c0 bf 04 00 00 00 e8 63 b0 90 ff 45 84 ff 75 02 <0f> 0b 42
0f b6 04 73 8d 50 f6 80 fa 02 77 8c 3c 0a 0f 85 c8 00 00 RSP:
0018:ffffa99d02726fd0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffa99d02727035 RCX: 0000000000000006
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff976acc857440
RBP: ffffa99d02727018 R08: 0000000000000002 R09: 000000000002a600
R10: ffffe90610193680 R11: 00000000000005e3 R12: 000000000000005d
R13: ffff976ac4b201b8 R14: 0000000000000001 R15: 0000000000000000
FS:  00007f14f99e1680(0000) GS:ffff976acc840000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdf212843b8 CR3: 0000000408906000 CR4: 00000000003406e0
Call Trace:
 core_link_enable_stream+0x626/0x680 [amdgpu]
 dce110_apply_ctx_to_hw+0x414/0x4e0 [amdgpu]
 dc_commit_state+0x331/0x5e0 [amdgpu]
 ? drm_calc_timestamping_constants+0xf9/0x150 [drm]
 amdgpu_dm_atomic_commit_tail+0x395/0x1e00 [amdgpu]
 ? dm_plane_helper_prepare_fb+0x20c/0x280 [amdgpu]
 commit_tail+0x42/0x70 [drm_kms_helper]
 drm_atomic_helper_commit+0x10c/0x120 [drm_kms_helper]
 amdgpu_dm_atomic_commit+0x95/0xa0 [amdgpu]
 drm_atomic_commit+0x4a/0x50 [drm]
 restore_fbdev_mode_atomic+0x1c0/0x1e0 [drm_kms_helper]
 restore_fbdev_mode+0x4c/0x160 [drm_kms_helper]
 ? _cond_resched+0x19/0x40
 drm_fb_helper_restore_fbdev_mode_unlocked+0x4e/0xa0 [drm_kms_helper]
 drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
 fbcon_init+0x471/0x630
 visual_init+0xd5/0x130
 do_bind_con_driver+0x20a/0x430
 do_take_over_console+0x7d/0x1b0
 do_fbcon_takeover+0x5c/0xb0
 fbcon_event_notify+0x6cd/0x8a0
 notifier_call_chain+0x4c/0x70
 blocking_notifier_call_chain+0x43/0x60
 fb_notifier_call_chain+0x1b/0x20
 register_framebuffer+0x254/0x360
 __drm_fb_helper_initial_config_and_unlock+0x2c5/0x510 [drm_kms_helper]
 drm_fb_helper_initial_config+0x35/0x40 [drm_kms_helper]
 amdgpu_fbdev_init+0xcd/0x100 [amdgpu]
 amdgpu_device_init+0x1156/0x1930 [amdgpu]
 amdgpu_driver_load_kms+0x8d/0x2e0 [amdgpu]
 drm_dev_register+0x12b/0x1c0 [drm]
 amdgpu_pci_probe+0xd3/0x160 [amdgpu]
 local_pci_probe+0x47/0xa0
 pci_device_probe+0x142/0x1b0
 really_probe+0xf5/0x3d0
 driver_probe_device+0x11b/0x130
 device_driver_attach+0x58/0x60
 __driver_attach+0xa3/0x140
 ? device_driver_attach+0x60/0x60
 ? device_driver_attach+0x60/0x60
 bus_for_each_dev+0x74/0xb0
 ? kmem_cache_alloc_trace+0x1a3/0x1c0
 driver_attach+0x1e/0x20
 bus_add_driver+0x147/0x220
 ? 0xffffffffc0cb9000
 driver_register+0x60/0x100
 ? 0xffffffffc0cb9000
 __pci_register_driver+0x5a/0x60
 amdgpu_init+0x74/0x83 [amdgpu]
 do_one_initcall+0x4a/0x1fa
 ? _cond_resched+0x19/0x40
 ? kmem_cache_alloc_trace+0x3f/0x1c0
 ? __vunmap+0x1cc/0x200
 do_init_module+0x5f/0x227
 load_module+0x2330/0x2b40
 __do_sys_finit_module+0xfc/0x120
 ? __do_sys_finit_module+0xfc/0x120
 __x64_sys_finit_module+0x1a/0x20
 do_syscall_64+0x5a/0x130
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f14f9500839
Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89
f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01
f0 ff ff 73 01 c3 48 8b 0d 1f f6 2c 00 f7 d8 64 89 01 48
RSP: 002b:00007fff9bc4f5a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 000055afb5abce30 RCX: 00007f14f9500839
RDX: 0000000000000000 RSI: 000055afb5ace0f0 RDI: 0000000000000017
RBP: 000055afb5ace0f0 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000017 R11: 0000000000000246 R12: 0000000000000000
R13: 000055afb5aad800 R14: 0000000000020000 R15: 0000000000000000
---[ end trace c286e96563966f08 ]---

This commit reworks the way that we handle i2c write for retimer in the
way that we abort this configuration if the feature is not available in
the device. For debug sake, we kept a simple log message in case the
retimer is not available.

Signed-off-by: Rodrigo Siqueira 
Reviewed-by: Hersen Wu 
Acked-by: Rodrigo Siqueira 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin