Commit Graph

53 Commits

Author SHA1 Message Date
Defang Bo e3c8f31aef drm/amdgpu: Add check to prevent IH overflow
[ Upstream commit e4180c4253f3f2da09047f5139959227f5cf1173 ]

Similar to commit <b82175750131>("drm/amdgpu: fix IH overflow on Vega10 v2").
When an ring buffer overflow happens the appropriate bit is set in the WPTR
register which is also written back to memory. But clearing the bit in the
WPTR doesn't trigger another memory writeback.

So what can happen is that we end up processing the buffer overflow over and
over again because the bit is never cleared. Resulting in a random system
lockup because of an infinite loop in an interrupt handler.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Defang Bo <bodefang@126.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-04-12 12:52:47 +08:00
Alex Deucher a66a2d0149 drm/amdgpu: Set reference clock to 100Mhz on Renoir (v2)
commit 6e80fb8ab04f6c4f377e2fd422bdd1855beb7371 upstream.

Fixes the rlc reference clock used for GPU timestamps.
Value is 100Mhz.  Confirmed with hardware team.

v2: reword commit message.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1480
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-12 12:52:34 +08:00
Dan Carpenter fb2f973f8d drm/amdgpu: Prevent shift wrapping in amdgpu_read_mask()
[ Upstream commit c915ef890d5dc79f483e1ca3b3a5b5f1a170690c ]

If the user passes a "level" value which is higher than 31 then that
leads to shift wrapping.  The undefined behavior will lead to a
syzkaller stack dump.

Fixes: 5632708f4452 ("drm/amd/powerplay: add dpm force multiple levels on cz/tonga/fiji/polaris (v2)")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-04-12 12:52:20 +08:00
Chenyang Li 7a770eabe0 drm/amdgpu: Fix macro name _AMDGPU_TRACE_H_ in preprocessor if condition
[ Upstream commit 956e20eb0fbb206e5e795539db5469db099715c8 ]

Add an underscore in amdgpu_trace.h line 24 "_AMDGPU_TRACE_H".

Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)")
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Chenyang Li <lichenyang@loongson.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-04-12 12:52:17 +08:00
Victor Zhao 3bd47837a2 drm/amdgpu/psp: fix psp gfx ctrl cmds
[ Upstream commit f14a5c34d143f6627f0be70c0de1d962f3a6ff1c ]

psp GFX_CTRL_CMD_ID_CONSUME_CMD different for windows and linux,
according to psp, linux cmds are not correct.

v2: only correct GFX_CTRL_CMD_ID_CONSUME_CMD.

Signed-off-by: Victor Zhao <Victor.Zhao@amd.com>
Reviewed-by: Emily.Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-04-12 12:51:35 +08:00
Dennis Li a61f85db49 drm/amdgpu: fix a GPU hang issue when remove device
[ Upstream commit 88e21af1b3f887d217f2fb14fc7e7d3cd87ebf57 ]

When GFXOFF is enabled and GPU is idle, driver will fail to access some
registers. Therefore change to disable power gating before all access
registers with MMIO.

Dmesg log is as following:
amdgpu 0000:03:00.0: amdgpu: amdgpu: finishing device.
amdgpu: cp queue pipe 4 queue 0 preemption failed
amdgpu 0000:03:00.0: amdgpu: failed to write reg 2890 wait reg 28a2
amdgpu 0000:03:00.0: amdgpu: failed to write reg 1a6f4 wait reg 1a706
amdgpu 0000:03:00.0: amdgpu: failed to write reg 2890 wait reg 28a2
amdgpu 0000:03:00.0: amdgpu: failed to write reg 1a6f4 wait reg 1a706

Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-04-12 12:51:25 +08:00
Veerabadhran Gopalakrishnan 5bc578288b amd/amdgpu: Disable VCN DPG mode for Picasso
[ Upstream commit c6d2b0fbb893d5c7dda405aa0e7bcbecf1c75f98 ]

Concurrent operation of VCN and JPEG decoder in DPG mode is
causing ring timeout due to power state.

Signed-off-by: Veerabadhran Gopalakrishnan <veerabadhran.gopalakrishnan@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:40:46 +08:00
Evan Quan beaf6aa817 drm/amdgpu: perform srbm soft reset always on SDMA resume
[ Upstream commit 253475c455eb5f8da34faa1af92709e7bb414624 ]

This can address the random SDMA hang after pci config reset
seen on Hawaii.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Tested-by: Sandeep Raghuraman <sandy.8925@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:40:43 +08:00
Tianci.Yin f920977f24 drm/amdgpu: add DID for navi10 blockchain SKU
[ Upstream commit 8942881144a7365143f196f5eafed24783a424a3 ]

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Tianci.Yin <tianci.yin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:40:25 +08:00
Christian König 335276cfbd drm/amdgpu: increase the reserved VM size to 2MB
commit 55bb919be4e4973cd037a04f527ecc6686800437 upstream.

Ideally this should be a multiple of the VM block size.
2MB should at least fit for Vega/Navi.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Madhav Chauhan <madhav.chauhan@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:40:10 +08:00
Evan Quan e50d1c6d28 drm/amdgpu: correct the gpu reset handling for job != NULL case
commit 207ac684792560acdb9e06f9d707ebf63c84b0e0 upstream.

Current code wrongly treat all cases as job == NULL.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-and-tested-by: Jane Jian <Jane.Jian@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:40:10 +08:00
Madhav Chauhan 292f690184 drm/amdgpu: don't map BO in reserved region
commit c4aa8dff6091cc9536aeb255e544b0b4ba29faf4 upstream.

2MB area is reserved at top inside VM.

Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Madhav Chauhan <madhav.chauhan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:40:09 +08:00
Philip Yang fafcb20f12 drm/amdgpu: prevent double kfree ttm->sg
[ 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 <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:38:01 +08:00
Jean Delvare 430ef03eae drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config
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 <jdelvare@suse.de>
Fixes: e008fa6fb415 ("drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config")
Cc: stable@vger.kernel.org
Cc: Navid Emamdoost <navid.emamdoost@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:37:44 +08:00
Philip Yang 6c8daea523 drm/amdkfd: fix restore worker race condition
[ 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 <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:37:20 +08:00
Jack Zhang 6389aea68f drm/amdgpu/sriov add amdgpu_amdkfd_pre_reset in gpu reset
[ 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 <Jack.Zhang1@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:37:11 +08:00
James Zhu 84ab6cc07c drm/amdgpu/vcn2.0: stall DPG when WPTR/RPTR reset
[ Upstream commit ef563ff403404ef2f234abe79bdd9f04ab6481c9 ]

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

Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:37:10 +08:00
Mikel Rychliski 2cf868c2ad PCI: Use ioremap(), not phys_to_virt() for platform ROM
[ 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 <mikel@mikelr.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:37:08 +08:00
John Clements 3d8af61eb1 drm/amdgpu: increase atombios cmd timeout
[ Upstream commit 1b3460a8b19688ad3033b75237d40fa580a5a953 ]

mitigates race condition on BACO reset between GPU bootcode and driver reload

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:36:58 +08:00
Monk Liu 8111e7cb4c drm/amdgpu: fix calltrace during kmd unload(v3)
[ Upstream commit 82a829dc8c2bb03cc9b7e5beb1c5479aa3ba7831 ]

issue:
kernel would report a warning from a double unpin
during the driver unloading on the CSB bo

why:
we unpin it during hw_fini, and there will be another
unpin in sw_fini on CSB bo.

fix:
actually we don't need to pin/unpin it during
hw_init/fini since it is created with kernel pinned,
we only need to fullfill the CSB again during hw_init
to prevent CSB/VRAM lost after S3

v2:
get_csb in init_rlc so hw_init() will make CSIB content
back even after reset or s3

v3:
use bo_create_kernel instead of bo_create_reserved for CSB
otherwise the bo_free_kernel() on CSB is not aligned and
would lead to its internal reserve pending there forever

take care of gfx7/8 as well

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:36:42 +08:00
Jiansong Chen 3fba1b5bc9 drm/amdgpu/gfx10: refine mgcg setting
commit de7a1b0b8753e1b0000084f0e339ffab295d27ef upstream.

1. enable ENABLE_CGTS_LEGACY to fix specviewperf11 random hang.
2. remove obsolete RLC_CGTT_SCLK_OVERRIDE workaround.

Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:35:15 +08:00
Alex Deucher 276fbff33d drm/amdgpu: Fix buffer overflow in INFO ioctl
commit b5b97cab55eb71daba3283c8b1d2cce456d511a1 upstream.

The values for "se_num" and "sh_num" come from the user in the ioctl.
They can be in the 0-255 range but if they're more than
AMDGPU_GFX_MAX_SE (4) or AMDGPU_GFX_MAX_SH_PER_SE (2) then it results in
an out of bounds read.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:35:14 +08:00
Navid Emamdoost 5658ea0876 drm/amdgpu/display: fix ref count leak when pm_runtime_get_sync fails
[ Upstream commit f79f94765f8c39db0b7dec1d335ab046aac03f20 ]

The call to pm_runtime_get_sync increments the counter even in case of
failure, leading to incorrect ref count.
In case of failure, decrement the ref count before returning.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:34:48 +08:00
Navid Emamdoost 2f74d8c503 drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config
[ Upstream commit e008fa6fb41544b63973a529b704ef342f47cc65 ]

in amdgpu_display_crtc_set_config, the call to pm_runtime_get_sync
increments the counter even in case of failure, leading to incorrect
ref count. In case of failure, decrement the ref count before returning.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:34:48 +08:00
Navid Emamdoost 0005cbd423 drm/amd/display: fix ref count leak in amdgpu_drm_ioctl
[ Upstream commit 5509ac65f2fe5aa3c0003237ec629ca55024307c ]

in amdgpu_drm_ioctl the call to pm_runtime_get_sync increments the
counter even in case of failure, leading to incorrect
ref count. In case of failure, decrement the ref count before returning.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:34:48 +08:00
Navid Emamdoost 4d1b592fc3 drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms
[ Upstream commit 9ba8923cbbe11564dd1bf9f3602add9a9cfbb5c6 ]

in amdgpu_driver_open_kms the call to pm_runtime_get_sync increments the
counter even in case of failure, leading to incorrect
ref count. In case of failure, decrement the ref count before returning.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:34:48 +08:00
Jack Xiao a4ccb2ca91 drm/amdgpu: avoid dereferencing a NULL pointer
[ Upstream commit 55611b507fd6453d26030c0c0619fdf0c262766d ]

Check if irq_src is NULL to avoid dereferencing a NULL pointer,
for MES ring is uneccessary to recieve an interrupt notification.

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:33:20 +08:00
Peilin Ye 619679860b drm/amdgpu: Prevent kernel-infoleak in amdgpu_info_ioctl()
commit 543e8669ed9bfb30545fd52bc0e047ca4df7fb31 upstream.

Compiler leaves a 4-byte hole near the end of `dev_info`, causing
amdgpu_info_ioctl() to copy uninitialized kernel stack memory to userspace
when `size` is greater than 356.

In 2015 we tried to fix this issue by doing `= {};` on `dev_info`, which
unfortunately does not initialize that 4-byte hole. Fix it by using
memset() instead.

Cc: stable@vger.kernel.org
Fixes: c193fa91b918 ("drm/amdgpu: information leak in amdgpu_info_ioctl()")
Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)")
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:32:47 +08:00
Alex Deucher e72f6f462f Revert "drm/amdgpu: Fix NULL dereference in dpm sysfs handlers"
commit 87004abfbc27261edd15716515d89ab42198b405 upstream.

This regressed some working configurations so revert it.  Will
fix this properly for 5.9 and backport then.

This reverts commit 38e0c89a19fd13f28d2b4721035160a3e66e270b.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:32:47 +08:00
Paweł Gronowski c3577a3d3e drm/amdgpu: Fix NULL dereference in dpm sysfs handlers
commit 38e0c89a19fd13f28d2b4721035160a3e66e270b upstream.

NULL dereference occurs when string that is not ended with space or
newline is written to some dpm sysfs interface (for example pp_dpm_sclk).
This happens because strsep replaces the tmp with NULL if the delimiter
is not present in string, which is then dereferenced by tmp[0].

Reproduction example:
sudo sh -c 'echo -n 1 > /sys/class/drm/card0/device/pp_dpm_sclk'

Signed-off-by: Paweł Gronowski <me@woland.xyz>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:32:38 +08:00
Jack Xiao 836704088d drm/amdgpu: fix preemption unit test
[ Upstream commit d845a2051b6b673fab4229b920ea04c7c4352b51 ]

Remove signaled jobs from job list and ensure the
job was indeed preempted.

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:32:32 +08:00
Jack Xiao d5da5bf990 drm/amdgpu/gfx10: fix race condition for kiq
[ Upstream commit 7d65a577bb58d4f27a3398a4c0cb0b00ab7d0511 ]

During preemption test for gfx10, it uses kiq to trigger
gfx preemption, which would result in race condition
with flushing TLB for kiq.

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:32:32 +08:00
Xiaojie Yuan fc680d0dd4 drm/amdgpu/sdma5: fix wptr overwritten in ->get_wptr()
commit 05051496b2622e4d12e2036b35165969aa502f89 upstream.

"u64 *wptr" points to the the wptr value in write back buffer and
"*wptr = (*wptr) >> 2;" results in the value being overwritten each time
when ->get_wptr() is called.

umr uses /sys/kernel/debug/dri/0/amdgpu_ring_sdma0 to get rptr/wptr and
decode ring content and it is affected by this issue.

fix and simplify the logic similar as sdma_v4_0_ring_get_wptr().

v2: fix for sdma5.2 as well
v3: drop sdma 5.2 changes for 5.8 and stable

Suggested-by: Le Ma <le.ma@amd.com>
Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:32:16 +08:00
Marek Olšák 8ca42d3d27 drm/amdgpu: don't do soft recovery if gpu_recovery=0
commit f4892c327a8e5df7ce16cab40897daf90baf6bec upstream.

It's impossible to debug shader hangs with soft recovery.

Signed-off-by: Marek Olšák <marek.olsak@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>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:31:39 +08:00
Alex Deucher 8b533fb84c drm/amdgpu/atomfirmware: fix vram_info fetching for renoir
commit d7a6634a4cfba073ff6a526cb4265d6e58ece234 upstream.

Renoir uses integrated_system_info table v12.  The table
has the same layout as v11 with respect to this data.  Just
reuse the existing code for v12 for stable.

Fixes incorrectly reported vram info in the driver output.

Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:31:22 +08:00
Alex Deucher a73c038789 drm/amdgpu: use %u rather than %d for sclk/mclk
commit beaf10efca64ac824240838ab1f054dfbefab5e6 upstream.

Large clock values may overflow and show up as negative.

Reported by prOMiNd on IRC.

Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:31:22 +08:00
Wenhui Sheng 8cb60abefc drm/amdgpu: add fw release for sdma v5_0
commit edfaf6fa73f15568d4337f208b2333f647c35810 upstream.

sdma fw isn't released when module exit

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Wenhui Sheng <Wenhui.Sheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:31:11 +08:00
Felix Kuehling 705d85f68a drm/amdgpu: Sync with VM root BO when switching VM to CPU update mode
[ Upstream commit 90ca78deb004abe75b5024968a199acb96bb70f9 ]

This fixes an intermittent bug where a root PD clear operation still in
progress could overwrite a PDE update done by the CPU, resulting in a
VM fault.

Fixes: 108b4d928c03 ("drm/amd/amdgpu: Update VM function pointer")
Reported-by: Jay Cornwall <Jay.Cornwall@amd.com>
Tested-by: Jay Cornwall <Jay.Cornwall@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:29:34 +08:00
chen gong 2e5ced41ea drm/amd/powerpay: Disable gfxoff when setting manual mode on picasso and raven
[ Upstream commit cbd2d08c7463e78d625a69e9db27ad3004cbbd99 ]

[Problem description]
1. Boot up picasso platform, launches desktop, Don't do anything (APU enter into "gfxoff" state)
2. Remote login to platform using SSH, then type the command line:
	sudo su -c "echo manual > /sys/class/drm/card0/device/power_dpm_force_performance_level"
	sudo su -c "echo 2 > /sys/class/drm/card0/device/pp_dpm_sclk" (fix SCLK to 1400MHz)
3. Move the mouse around in Window
4. Phenomenon :  The screen frozen

Tester will switch sclk level during glmark2 run time.
APU will enter "gfxoff" state intermittently during glmark2 run time.
The system got hanged if fix GFXCLK to 1400MHz when APU is in "gfxoff"
state.

[Debug]
1. Fix SCLK to X MHz
	1400: screen frozen, screen black, then OS will reboot.
	1300: screen frozen.
	1200: screen frozen, screen black.
	1100: screen frozen, screen black, then OS will reboot.
	1000: screen frozen, screen black.
	900:  screen frozen, screen black, then OS will reboot.
	800:  Situation Nomal, issue disappear.
	700:  Situation Nomal, issue disappear.
2. SBIOS setting: AMD CBS --> SMU Debug Options -->SMU Debug --> "GFX DLDO Psm Margin Control":
	50 : Situation Nomal, issue disappear.
	45 : Situation Nomal, issue disappear.
	40 : Situation Nomal, issue disappear.
	35 : Situation Nomal, issue disappear.
	30 : screen black.
	25 : screen frozen, then blurred screen.
	20 : screen frozen.
	15 : screen black.
	10 : screen frozen.
	5  : screen frozen, then blurred screen.
3. Disable GFXOFF feature
	Situation Nomal, issue disappear.

[Why]
Through a period of time debugging with Sys Eng team and SMU team, Sys
Eng team said this is voltage/frequency marginal issue not a F/W or H/W
bug. This experiment proves that default targetPsm [for f=1400MHz] is
not sufficient when GFXOFF is enabled on Picasso.

SMU team think it is an odd test conditions to force sclk="1400MHz" when
GPU is in "gfxoff" state,then wake up the GFX. SCLK should be in the
"lowest frequency" when gfxoff.

[How]
Disable gfxoff when setting manual mode.
Enable gfxoff when setting other mode(exiting manual mode) again.

By the way, from the user point of view, now that user switch to manual
mode and force SCLK Frequency, he don't want SCLK be controlled by
workload.It becomes meaningless to "switch to manual mode" if APU enter "gfxoff"
due to lack of workload at this point.

Tips: Same issue observed on Raven.

Signed-off-by: chen gong <curry.gong@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:29:34 +08:00
limingyu cf158739e1 drm/amdgpu: Init data to avoid oops while reading pp_num_states.
[ Upstream commit 6f81b2d047c59eb77cd04795a44245d6a52cdaec ]

For chip like CHIP_OLAND with si enabled(amdgpu.si_support=1),
the amdgpu will expose pp_num_states to the /sys directory.
In this moment, read the pp_num_states file will excute the
amdgpu_get_pp_num_states func. In our case, the data hasn't
been initialized, so the kernel will access some ilegal
address, trigger the segmentfault and system will reboot soon:

    uos@uos-PC:~$ cat /sys/devices/pci0000\:00/0000\:00\:00.0/0000\:01\:00
    .0/pp_num_states

    Message from syslogd@uos-PC at Apr 22 09:26:20 ...
     kernel:[   82.154129] Internal error: Oops: 96000004 [#1] SMP

This patch aims to fix this problem, avoid that reading file
triggers the kernel sementfault.

Signed-off-by: limingyu <limingyu@uniontech.com>
Signed-off-by: zhoubinbin <zhoubinbin@uniontech.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:29:16 +08:00
Christian König 6b507bf004 drm/amdgpu: fix and cleanup amdgpu_gem_object_close v4
[ Upstream commit 82c416b13cb7d22b96ec0888b296a48dff8a09eb ]

The problem is that we can't add the clear fence to the BO
when there is an exclusive fence on it since we can't
guarantee the the clear fence will complete after the
exclusive one.

To fix this refactor the function and also add the exclusive
fence as shared to the resv object.

v2: fix warning
v3: add excl fence as shared instead
v4: squash in fix for fence handling in amdgpu_gem_object_close

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: xinhui pan <xinhui.pan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:29:14 +08:00
Felix Kuehling 30bedfd704 drm/amdgpu: Use GEM obj reference for KFD BOs
[ Upstream commit 39b3128d7ffd44e400e581e6f49e88cb42bef9a1 ]

Releasing the AMDGPU BO ref directly leads to problems when BOs were
exported as DMA bufs. Releasing the GEM reference makes sure that the
AMDGPU/TTM BO is not freed too early.

Also take a GEM reference when importing BOs from DMABufs to keep
references to imported BOs balances properly.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Alex Sierra <alex.sierra@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:28:29 +08:00
Evan Quan 70de84ca5f drm/amdgpu: drop unnecessary cancel_delayed_work_sync on PG ungate
[ Upstream commit 1fe48ec08d9f2e26d893a6c05bd6c99a3490f9ef ]

As this is already properly handled in amdgpu_gfx_off_ctrl(). In fact,
this unnecessary cancel_delayed_work_sync may leave a small time window
for race condition and is dangerous.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:28:28 +08:00
Alex Deucher 1d7d1ae513 drm/amdgpu: force fbdev into vram
[ Upstream commit a6aacb2b26e85aa619cf0c6f98d0ca77314cd2a1 ]

We set the fb smem pointer to the offset into the BAR, so keep
the fbdev bo in vram.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=207581
Fixes: 6c8d74caa2fa33 ("drm/amdgpu: Enable scatter gather display support")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:27:54 +08:00
Marek Olšák 31c81c7241 drm/amdgpu: invalidate L2 before SDMA IBs (v2)
[ Upstream commit fdf83646c0542ecfb9adc4db8f741a1f43dca058 ]

This fixes GPU hangs due to cache coherency issues.

v2: Split the version bump to a separate patch

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Tested-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:27:51 +08:00
Luben Tuikov 7ffe7768a7 drm/amdgpu: simplify padding calculations (v2)
[ Upstream commit ce73516d42c9ab011fad498168b892d28e181db4 ]

Simplify padding calculations.

v2: Comment update and spacing.

Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:27:51 +08:00
Evan Quan 3b5a69844a drm/amdgpu: drop redundant cg/pg ungate on runpm enter
[ Upstream commit f7b52890daba570bc8162d43c96b5583bbdd4edd ]

CG/PG ungate is already performed in ip_suspend_phase1. Otherwise,
the CG/PG ungate will be performed twice. That will cause gfxoff
disablement is performed twice also on runpm enter while gfxoff
enablemnt once on rump exit. That will put gfxoff into disabled
state.

Fixes: b2a7e9735ab286 ("drm/amdgpu: fix the hw hang during perform system reboot and reset")
Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:27:32 +08:00
Evan Quan 96c44d6761 drm/amdgpu: move kfd suspend after ip_suspend_phase1
[ Upstream commit c457a273e118bb96e1db8d1825f313e6cafe4258 ]

This sequence change should be safe as what did in ip_suspend_phase1
is to suspend DCE only. And this is a prerequisite for coming
redundant cg/pg ungate dropping.

Fixes: 487eca11a321ef ("drm/amdgpu: fix gfx hang during suspend with video playback (v2)")
Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:27:32 +08:00
Aaron Ma ec3cc82116 drm/amdgpu: Fix oops when pp_funcs is unset in ACPI event
commit 5932d260a8d85a103bd6c504fbb85ff58b156bf9 upstream.

On ARCTURUS and RENOIR, powerplay is not supported yet.
When plug in or unplug power jack, ACPI event will issue.
Then kernel NULL pointer BUG will be triggered.
Check for NULL pointers before calling.

Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:27:29 +08:00
Prike Liang ccdd05099b drm/amdgpu: fix the hw hang during perform system reboot and reset
commit b2a7e9735ab2864330be9d00d7f38c961c28de5d upstream.

The system reboot failed as some IP blocks enter power gate before perform
hw resource destory. Meanwhile use unify interface to set device CGPG to ungate
state can simplify the amdgpu poweroff or reset ungate guard.

Fixes: 487eca11a321ef ("drm/amdgpu: fix gfx hang during suspend with video playback (v2)")
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Tested-by: Mengbing Wang <Mengbing.Wang@amd.com>
Tested-by: Paul Menzel <pmenzel@molgen.mpg.de>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:26:26 +08:00