Fix the NULL pointer dereference while running amdgpu_test:

[   54.972246] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
[   54.972265] IP:           (null)
[   54.972273] PGD 0 P4D 0
[   54.972280] Oops: 0010 [#1] SMP PTI
[   54.972288] Modules linked in: amdkfd amd_iommu_v2 amdgpu(OE) chash gpu_sched ttm drm_kms_helper drm i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep intel_rapl snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_seq snd_seq_device kvm irqbypass snd_timer crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd soundcore joydev input_leds aesni_intel aes_x86_64 crypto_simd glue_helper cryptd idma64 virt_dma mei_me intel_lpss_pci serio_raw intel_cstate intel_rapl_perf shpchp intel_pch_thermal mei mac_hid intel_lpss acpi_pad parport_pc ppdev nfsd lp auth_rpcgss nfs_acl lockd grace sunrpc parport autofs4 hid_generic
[   54.972434]  usbhid mxm_wmi e1000e psmouse ahci hid libahci wmi pinctrl_sunrisepoint video pinctrl_intel
[   54.972457] CPU: 6 PID: 1393 Comm: uvd Tainted: G           OE    4.16.0-rc7-27fb84fda777 #1
[   54.972473] Hardware name: MSI MS-7984/Z170 KRAIT GAMING (MS-7984), BIOS B.80 05/11/2016
[   54.972489] RIP: 0010:          (null)
[   54.972497] RSP: 0018:ffffaea002c8bcc0 EFLAGS: 00010202
[   54.972508] RAX: 0000000000000000 RBX: ffff9d30d3c56f60 RCX: 00000000007c0002
[   54.972522] RDX: 000000000001a6fb RSI: 000000000001a6e9 RDI: ffff9d30d3c56f60
[   54.972536] RBP: ffffaea002c8bd10 R08: 0000000000000002 R09: ffffffffc06977d0
[   54.972550] R10: 0000000000000040 R11: 0000000000000000 R12: 0000000000000002
[   54.972564] R13: ffff9d30d3c5001c R14: ffff9d30d3c50000 R15: 0000000000000006
[   54.972579] FS:  0000000000000000(0000) GS:ffff9d30eed80000(0000) knlGS:0000000000000000
[   54.972594] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.972606] CR2: 0000000000000000 CR3: 00000002dbc0a001 CR4: 00000000003606e0
[   54.972620] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   54.972634] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   54.972648] Call Trace:
[   54.972685]  ? gmc_v9_0_emit_flush_gpu_tlb+0x111/0x140 [amdgpu]
[   54.972721]  uvd_v7_0_ring_emit_vm_flush+0x31/0x70 [amdgpu]
[   54.972751]  amdgpu_vm_flush+0x5dc/0x6c0 [amdgpu]
[   54.972787]  ? pp_dpm_powergate_uvd+0x50/0x80 [amdgpu]
[   54.972816]  amdgpu_ib_schedule+0x120/0x4e0 [amdgpu]
[   54.972850]  amdgpu_job_run+0x17b/0x1c0 [amdgpu]
[   54.972861]  drm_sched_main+0x2cc/0x490 [gpu_sched]
[   54.972873]  ? wait_woken+0x80/0x80
[   54.972882]  kthread+0x121/0x140
[   54.972891]  ? drm_sched_job_finish+0xf0/0xf0 [gpu_sched]
[   54.972902]  ? kthread_create_worker_on_cpu+0x70/0x70
[   54.972914]  ret_from_fork+0x35/0x40
[   54.972922] Code:  Bad RIP value.
[   54.972932] RIP:           (null) RSP: ffffaea002c8bcc0
[   54.972943] CR2: 0000000000000000
[   54.972951] ---[ end trace 5feb349263bbf633 ]---
Signed-off-by: NXiaojie Yuan <Xiaojie.Yuan@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This adds support for writing and reading back using the
helper since the engines doesn't have a oneshot packet.
Reviewed-by: NHuang Rui <ray.huang@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This is preparation for sharing client ID definitions
between amdgpu and amdkfd
Signed-off-by: NOak Zeng <Oak.Zeng@amd.com>
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Stuffing the PASID mapping into the VM flush isn't flexible enough since
the PASID mapping changes not as often as we need a VM flush.

v2: add missing use of gmc_v7_0_emit_pasid_mapping
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Keep that at a common place instead of spread over all engines.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NFelix Kuehling <felix.kuehling@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add emit_reg_wait implementation for UVD v7.

v2: call new function directly from the existing code
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NFelix Kuehling <felix.kuehling@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

All HDP invalidation and most flush can now be replaced by the generic
ASIC function.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NChunming Zhou <david1.zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Unify tlb flushing for gmc v9.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NChunming Zhou <david1.zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Needed for vm_flush unification.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NChunming Zhou <david1.zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

rd the pasid from the VM code to the emit_vm_flush function and update
all implementations with the new parameter.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

And rename it to struct gmc_funcs.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NSamuel Li <Samuel.Li@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

sed -i "s/vm_id/vmid/g" drivers/gpu/drm/amd/amdgpu/*.c
sed -i "s/vm_id/vmid/g" drivers/gpu/drm/amd/amdgpu/*.h
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

And also provide the level for which we need a PDE.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Remove the header where it's not used.
Acked-by: NChristian Konig <christian.koenig@amd.com>
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Acked-by: NChristian Konig <christian.koenig@amd.com>
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Handle dynamic offsets correctly in static arrays.
Acked-by: NChristian Konig <christian.koenig@amd.com>
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This moves and renames the AMDGPU scheduler to a common location in DRM
in order to facilitate re-use by other drivers. This is mostly a straight
forward rename with no code changes.

One notable exception is the function to_drm_sched_fence(), which is no
longer a inline header function to avoid the need to export the
drm_sched_fence_ops_scheduled and drm_sched_fence_ops_finished structures.
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Tested-by: NDieter Nützel <Dieter@nuetzel-hh.de>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NLucas Stach <l.stach@pengutronix.de>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Remove asic_reg/vega10 folder.
Signed-off-by: NFeifei Xu <Feifei.Xu@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Cleanup asic_reg/vega10/NBIF folder.
Signed-off-by: NFeifei Xu <Feifei.Xu@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Cleanup asic_reg/vega10/MMHUB folder.
Signed-off-by: NFeifei Xu <Feifei.Xu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Cleanup asic_reg/vega10/VCE folder.
Signed-off-by: NFeifei Xu <Feifei.Xu@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Cleanup asic_reg/vega10/UVD folder,remove unused uvd_7_0_default.h.
Signed-off-by: NFeifei Xu <Feifei.Xu@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Cleanup asic_reg/vega10/HDP folder, remove hdp_4_0_default.h
Signed-off-by: NFeifei Xu <Feifei.Xu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

When UVD bo is created, its size is based on the information from firmware
header (ucode_size_bytes). The same value should be be used when programming
UVD mc controller offsets, otherwise it can happen that
(mmUVD_VCPU_CACHE_OFFSET2 + mmUVD_VCPU_CACHE_SIZE2) will point
AMDGPU_GPU_PAGE_SIZE bytes after the UVD bo end.

Second issue is that when programming the mmUVD_VCPU_CACHE_SIZE0 register,
AMDGPU_UVD_FIRMWARE_OFFSET should be taken into account. If it isn't,
(mmUVD_VCPU_CACHE_OFFSET2 + mmUVD_VCPU_CACHE_SIZE2) will always point
AMDGPU_UVD_FIRMWARE_OFFSET bytes after the UVD bo end.

v2: move firmware size calculation into macro definition
v3: align firmware size to the gpu page size
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NPiotr Redlewski <predlewski@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

When this VF stays in exclusive mode for long, other VFs will be
impacted.

The redundant messages causes exclusive mode timeout when they're
redirected. That is a normal use case for cloud service to redirect
guest log to virtual serial port.
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: Npding <Pixel.Ding@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

this member will be used later, it will points to
the real var inside of context and CS_SUBMIT & gpu schdduler
can decide if skip a job depends on context->guilty or *entity->guilty
Signed-off-by: NMonk Liu <Monk.Liu@amd.com>
Reviewed-by: NChunming Zhou <David1.Zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The workaround is not required anymor and would result in
hangs during suspend/resume cycles if the uvd block were busy.
Signed-off-by: NTom St Denis <tom.stdenis@amd.com>
Acked-by: NLeo Liu <leo.liu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NMonk Liu <Monk.Liu@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

1.Since in sriov there is no need of decoding, so skip the related code;
2.Vcpu boot up and umc enable need to take at the end of the init sequence;
Signed-off-by: NFrank Min <Frank.Min@amd.com>
Signed-off-by: NXiangliang.Yu <Xiangliang.Yu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Now uvd doorbell is from 0xf8-0xfb and vce doorbell is from 0xfc-0xff
Signed-off-by: NFrank Min <Frank.Min@amd.com>
Signed-off-by: NXiangliang.Yu <Xiangliang.Yu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Since rptr would not be accessed on later secure asics in sriov, remove
the ring test.
Signed-off-by: NFrank Min <Frank.Min@amd.com>
Signed-off-by: NXiangliang.Yu <Xiangliang.Yu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add uvd and vce re-init after gpu reset.
Signed-off-by: NFrank Min <Frank.Min@amd.com>
Signed-off-by: NXiangliang.Yu <Xiangliang.Yu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

MMSCH FW need to get the wptr from 0 after it get the mailbox request
from driver, since every time kick the mailbox, mmsch thinks that it
is the first time engine start to initialize.
Signed-off-by: NFrank Min <Frank.Min@amd.com>
Signed-off-by: NXiangliang.Yu <Xiangliang.Yu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NTom St Denis <tom.stdenis@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

Rename adjust_mc_addr to get_vm_pde and check the address bits in one place.

v2: handle vcn as well, keep setting the valid bit manually,
    add a BUG_ON() for GMC v6, v7 and v8 as well.
v3: handle vcn_v1_0_enc_ring_emit_vm_flush as well.
v4: fix the BUG_ON mask for GFX6-8
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

That GFX9 needs a PDE in the registers is entirely GFX9 specific.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

According to HW design, need to clean doorbell after setup MMSCH
table.
Signed-off-by: NFrank Min <Frank.Min@amd.com>
Signed-off-by: NXiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: NMonk Liu <Monk.Liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

On vega10, some hw finish operations should not be applied in SR-IOV
case. This works as workaround to fix multi-VFs reboot/shutdown
issues.
Signed-off-by: NTrigger Huang <trigger.huang@amd.com>
Reviewed-by: NXiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: NMonk Liu <monk.liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add UVD hw init.
Signed-off-by: NFrank Min <Frank.Min@amd.com>
Signed-off-by: NXiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add UVD doorbell for SRIOV.
Signed-off-by: NFrank Min <Frank.Min@amd.com>
Signed-off-by: NXiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>