totalram_pages, zone->managed_pages and totalhigh_pages updates are
protected by managed_page_count_lock, but readers never care about it.
Convert these variables to atomic to avoid readers potentially seeing a
store tear.

This patch converts zone->managed_pages.  Subsequent patches will convert
totalram_panges, totalhigh_pages and eventually managed_page_count_lock
will be removed.

Main motivation was that managed_page_count_lock handling was complicating
things.  It was discussed in length here,
https://lore.kernel.org/patchwork/patch/995739/#1181785 So it seemes
better to remove the lock and convert variables to atomic, with preventing
poteintial store-to-read tearing as a bonus.

Link: http://lkml.kernel.org/r/1542090790-21750-3-git-send-email-arunks@codeaurora.orgSigned-off-by: NArun KS <arunks@codeaurora.org>
Suggested-by: NMichal Hocko <mhocko@suse.com>
Suggested-by: NVlastimil Babka <vbabka@suse.cz>
Reviewed-by: NKonstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: NDavid Hildenbrand <david@redhat.com>
Acked-by: NMichal Hocko <mhocko@suse.com>
Acked-by: NVlastimil Babka <vbabka@suse.cz>
Reviewed-by: NPavel Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

New vega20 id.
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

New vega10 ids.
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

This allows user mode to map doorbell pages into GPUVM address space.
That way GPUs can submit to user mode queues (self-dispatch).
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This is used for interoperability between ROCm compute and graphics
APIs. It allows importing graphics driver BOs into the ROCm SVM
address space for zero-copy GPU access.

The API is split into two steps (query and import) to allow user mode
to manage the virtual address space allocation for the imported buffer.
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

top_dev->gpu is NULL for CPUs. Avoid dereferencing it if NULL.
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Remove gca/gfx_8_0_enum.h which is included more than once
Signed-off-by: NBrajeswar Ghosh <brajeswar.linux@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This is a known gfx9 HW issue, and this change can perfectly workaround
the issue.
Signed-off-by: NYong Zhao <Yong.Zhao@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This makes debug message get printed even when there is early return.
Signed-off-by: NYong Zhao <Yong.Zhao@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-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 Vega12 and Polaris12 device info and device IDs to KFD.
Signed-off-by: NGang Ba <gaba@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This will make reading code much easier. This fixes a few spots missed in a
previous commit with the same title.
Signed-off-by: NYong Zhao <yong.zhao@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Vega10 has multiple interrupt rings, so this can be called from multiple
calles at the same time resulting in:

[   71.779334] ================================
[   71.779406] WARNING: inconsistent lock state
[   71.779478] 4.19.0-rc1+ #44 Tainted: G        W
[   71.779565] --------------------------------
[   71.779637] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
[   71.779740] kworker/6:1/120 [HC0[0]:SC0[0]:HE1:SE1] takes:
[   71.779832] 00000000ad761971 (&(&kfd->interrupt_lock)->rlock){?...},
at: kgd2kfd_interrupt+0x75/0x100 [amdgpu]
[   71.780058] {IN-HARDIRQ-W} state was registered at:
[   71.780115]   _raw_spin_lock+0x2c/0x40
[   71.780180]   kgd2kfd_interrupt+0x75/0x100 [amdgpu]
[   71.780248]   amdgpu_irq_callback+0x6c/0x150 [amdgpu]
[   71.780315]   amdgpu_ih_process+0x88/0x100 [amdgpu]
[   71.780380]   amdgpu_irq_handler+0x20/0x40 [amdgpu]
[   71.780409]   __handle_irq_event_percpu+0x49/0x2a0
[   71.780436]   handle_irq_event_percpu+0x30/0x70
[   71.780461]   handle_irq_event+0x37/0x60
[   71.780484]   handle_edge_irq+0x83/0x1b0
[   71.780506]   handle_irq+0x1f/0x30
[   71.780526]   do_IRQ+0x53/0x110
[   71.780544]   ret_from_intr+0x0/0x22
[   71.780566]   cpuidle_enter_state+0xaa/0x330
[   71.780591]   do_idle+0x203/0x280
[   71.780610]   cpu_startup_entry+0x6f/0x80
[   71.780634]   start_secondary+0x1b0/0x200
[   71.780657]   secondary_startup_64+0xa4/0xb0

Fix this by always using irq save spin locks.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The flags are added when calling amdgpu_gmc_pd_addr().
Signed-off-by: NYong Zhao <Yong.Zhao@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The same statement is later done in kgd_set_pasid_vmid_mapping(), so no
need to do it in set_pasid_vmid_mapping().
Signed-off-by: NYong Zhao <Yong.Zhao@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add amdgpu_amdkfd_ prefix to amdgpu functions served for amdkfd usage.

v2: fix indentation
Signed-off-by: NAmber Lin <Amber.Lin@amd.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

After amdkfd module is merged into amdgpu, KFD can call amdgpu directly
and no longer needs to use the function pointer. Replace those function
pointers with functions if they are not ASIC dependent.
Signed-off-by: NAmber Lin <Amber.Lin@amd.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

kmemdup has implemented the function that kmalloc() + memcpy().
We prefer to kmemdup rather than code opened implementation.
Signed-off-by: Nzhong jiang <zhongjiang@huawei.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c: In function 'destroy_queue_cpsch':
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c:1366:7: warning:
 variable 'preempt_all_queues' set but not used [-Wunused-but-set-variable]

It never used since introduct in
commit 992839ad ("drm/amdkfd: Add static user-mode queues support")
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This mm_struct pointer should never be dereferenced. If running in
a user thread, just use current->mm. If running in a kernel worker
use get_task_mm to get a safe reference to the mm_struct.
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This mm_struct pointer should never be dereferenced. If running in
a user thread, just use current->mm. If running in a kernel worker
use get_task_mm to get a safe reference to the mm_struct.
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Firmware have the workaround to replace the atomic Ops with read-modify-write on CP side.
User should not expect atomic Ops on system memory works normally if system didn't not
support it.
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-By: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add Vega20 device IDs, device info and enable it in KFD.
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>

amdgpu_gpuvm_get_process_page_dir should return the page table address
in the format expected by the pm4_map_process packet for all ASIC
generations.
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>

Vega20 supports 8 SDMA queues per engine
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Wavefront context save data is of interest to userspace clients for
debugging static wavefront state. The MQD contains two parameters
required to parse the control stack and the control stack itself
is kept in the MQD from gfx9 onwards.

Add an ioctl to fetch the context save area and control stack offsets
and to copy the control stack to a userspace address if it is kept in
the MQD.
Signed-off-by: NJay Cornwall <Jay.Cornwall@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Also save the version in struct kfd_dev so we only need to query
it once.
Signed-off-by: NPhilip Yang <Philip.Yang@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

KFD module doesn't support TONGA SRIOV, if init KFD module in TONGA SRIOV
environment, it will let compute ring IB test fail.
Signed-off-by: NEmily Deng <Emily.Deng@amd.com>
Reviewed-by: NShaoyun.liu <Shaoyun.liu@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add the flags of properties according to Asic type and pcie
capabilities.
Signed-off-by: NEric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Because CRAT_CU_FLAGS_IOMMU_PRESENT was not set in some BIOS crat, we
need to workaround this.

For future compatibility, we also overwrite the bit in capability according
to the value of needs_iommu_device.
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NYong Zhao <Yong.Zhao@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

CWSR fails on Raven if the control stack is MTYPE_UC, which is used
for regular GART mappings. As a workaround we map it using MTYPE_NC.

The MEC firmware expects the control stack at one page offset from the
start of the MQD so it is part of the MQD allocation on GFXv9. AMDGPU
added a memory allocation flag just for this purpose.
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NYong Zhao <yong.zhao@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

v2: compile fix
Signed-off-by: Nshaoyunl <Shaoyun.Liu@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Generate xGMI iolink for upper level usage
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Update the iolink type defines according to the new thunk spec
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Thunk will generate the XGMI topology information when necessary with the hive_id
for each specified device
Signed-off-by: NShaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Move some KFD-related (but used in amdgpu_drv.c) definitions from
kfd_priv.h to kgd_kfd_interface.h so we don't need to include kfd_priv.h
in amdgpu_drv.c. This fixes a build failure when AMDGPU is enabled but
MMU_NOTIFIER is not.
This patch also disables KFD-related module options when HSA_AMD is not
enabled.

v2: rebase (Alex)
Signed-off-by: NAmber Lin <Amber.Lin@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

For compute vm acquired from amdgpu, vm.pasid is managed
by kfd. Decouple pasid from such vm on process destroy
to avoid duplicate pasid release.
Signed-off-by: NOak Zeng <Oak.Zeng@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

To make a amdgpu vm to a compute vm, the old pasid will be freed and
replaced with a pasid managed by kfd. Kfd can't reuse original pasid
allocated by amdgpu because kfd uses different pasid policy with amdgpu.
For example, all graphic devices share one same pasid in a process.

v2: rebase (Alex)
Signed-off-by: NOak Zeng <Oak.Zeng@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

After merging KFD into amdgpu, move module parameters defined in KFD to
amdgpu_drv.c, where other module parameters are declared.

v2: add kernel-doc comments
v3: rebase and fix parameter variable name (Alex)
Signed-off-by: NAmber Lin <Amber.Lin@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Since KFD is only supported by single GPU driver, it makes sense to merge
amdgpu and amdkfd into one module. This patch is the initial step: merge
Kconfig and Makefile.

v2: also remove kfd from drm Kconfig
Signed-off-by: NAmber Lin <Amber.Lin@amd.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

User mode queue submissions don't go through KFD. Therefore we don't
know exactly when compute is idle or not idle. We use the existence
of user mode queues on a device as an approximation.

register_process is called when the first queue of a process is
created. Conversely unregister_process is called when the last queue
is destroyed. The first process that is registered takes compute
out of idle. The last process that is unregisters sets compute back
to idle.
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: NEric Huang <JinHuiEric.Huang@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>