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path: root/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c (follow)
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2019-01-29drm/amdgpu: sriov restrict max_pfn below AMDGPU_GMC_HOLEwentalou1-1/+5
sriov need to restrict max_pfn below AMDGPU_GMC_HOLE. access the hole results in a range fault interrupt IIRC. Signed-off-by: Wentao Lou <Wentao.Lou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-01-14drm/amdgpu: improve GMC v9 page fault messageChristian König1-1/+4
Note if this is a retry fault or not and cleanup the message a bit. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-01-14drm/amdgpu/gmc: fix compiler errors [-Werror,-Wmissing-braces] (V2)Shirish S1-1/+2
Initializing structures with { } is known to be problematic since it doesn't necessararily initialize all bytes, in case of padding, causing random failures when structures are memcmp(). This patch fixes the structure initialisation related compiler error by memset(). V2: rectified missing piece in coding Signed-off-by: Shirish S <shirish.s@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-12-14drm/amdgpu: update the vm invalidation engine layout V2Evan Quan1-22/+31
We need new invalidation engine layout due to new SDMA page queues added. V2: fix coding style and add correct return value Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Oak Zeng <Oak.Zeng@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-12-07drm/amdgpu: move IV prescreening into the GMC codeChristian König1-0/+59
The GMC/VM subsystem is causing the faults, so move the handling here as well. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-12-03drm/amdgpu: add missing error handlingChristian König1-0/+3
We ignored the return code here. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-12-03drm/amdgpu: add a xgmi supported flagAlex Deucher1-1/+1
Use this to track whether an asic supports xgmi rather than checking the asic type everywhere. Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-19Revert "drm/amdgpu: use GMC v9 KIQ workaround only for the GFXHUB" (v2)Chengming Gui1-3/+6
With GFXOFF enabled, this patch will cause PCO amdgpu_test failed, but GFXOFF is necessary for PCO, so revert the patch. This reverts commit b83761bb0b09ec11c924afe9d88e458cb16a0372. v2: add a comment for future reference (Alex) Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Jack Gui <Jack.Gui@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-05drm/amdgpu: use GMC v9 KIQ workaround only for the GFXHUBChristian König1-3/+3
The MMHUB is not affected by this. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Emily Deng <Emily.Deng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-05drm/amdgpu: drop the busy wait for GMC v9 TLB invalidationsChristian König1-22/+4
This code is not performance critical. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Emily Deng <Emily.Deng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-05drm/amdgpu: cleanup GMC v9 TLB invalidationChristian König1-47/+6
Move the kiq handling into amdgpu_virt.c and drop the fallback. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Emily Deng <Emily.Deng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-05drm/amdgpu: drop the remaining uses of ring idx in messagesChristian König1-3/+2
Consistently use the ring name instead. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-05drm/amdgpu: Retire amdgpu_ring.ready flag v4Andrey Grodzovsky1-1/+1
Start using drm_gpu_scheduler.ready isntead. v3: Add helper function to run ring test and set sched.ready flag status accordingly, clean explicit sched.ready sets from the IP specific files. v4: Add kerneldoc and rebase. 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>
2018-11-05drm/amdgpu: Reorganize amdgpu_gmc_flush_gpu_tlb() for kfd to useYong Zhao1-10/+10
Add a flush_type parameter to that series of functions. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@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>
2018-09-26drm/amdgpu: make function pointers mandatoryChristian König1-2/+1
We always want those to be setup correctly. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-14drm/amdgpu: simplify Raven, Raven2, and Picasso handlingAlex Deucher1-4/+0
Treat them all as Raven rather than adding a new picasso asic type. This simplifies a lot of code and also handles the case of rv2 chips with the 0x15d8 pci id. It also fixes dmcu fw handling for picasso. Acked-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-14drm/amdgpu: enable mmhub power gatingKenneth Feng1-1/+0
Remove some functions due to the design change. All the mmhub power gating sequence is moved to smu fw.Driver sends the message to enable mmhub powergating.We can also skip the fw version check since the old fw version is in a very early stage and we don't use that fw for release. Signed-off-by: Kenneth Feng <kenneth.feng@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-14drm/amdgpu: add picasso support for gmcLikun Gao1-0/+4
Same as raven. Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-10drm/amdgpu/gmc9: Adjust GART and AGP location with xgmi offset (v2)Alex Deucher1-0/+6
On hives with xgmi enabled, the fb_location aperture is a size which defines the total framebuffer size of all nodes in the hive. Each GPU in the hive has the same view via the fb_location aperture. GPU0 starts at offset (0 * segment size), GPU1 starts at offset (1 * segment size), etc. For access to local vram on each GPU, we need to take this offset into account. This including on setting up GPUVM page table and GART table v2: squash in "drm/amdgpu: Init correct fb region for none XGMI configuration" Acked-by: Huang Rui <ray.huang@amd.com> Acked-by: Slava Abramov <slava.abramov@amd.com> Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Acked-by: Huang Rui <ray.huang@amd.com>
2018-09-10drm/amdgpu/gmc9: add a new gfxhub 1.1 helper for xgmiAlex Deucher1-0/+7
Used to populate the xgmi info on vega20. v2: PF_MAX_REGION is val - 1 (Ray) Acked-by: Huang Rui <ray.huang@amd.com> Acked-by: Slava Abramov <slava.abramov@amd.com> Reviewed-by :Shaoyun liu <Shaoyun.liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by :Shaoyun liu <Shaoyun.liu@amd.com>
2018-09-10drm/amdgpu: enable AGP aperture for GMC9 v2Christian König1-0/+2
Enable the old AGP aperture to avoid GART mappings. v2: don't enable it for SRIOV Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-02drm/amdgpu/gmc9: don't keep stolen memory on vega20Alex Deucher1-4/+3
Vega20 does not appear to be affected by the same issue as vega10. Enable the full stolen memory handling on vega20. Reserve the appropriate size at init time to avoid display artifacts and then free it at the end of init once the new FB is up and running. Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-02drm/amdgpu/gmc9: don't keep stolen memory on vega12Alex Deucher1-1/+2
vega12 does not appear to be affected by the same issue as vega10. Enable the full stolen memory handling on vega12. Reserve the appropriate size at init time to avoid display artifacts and then free it at the end of init once the new FB is up and running. Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-02drm/amdgpu/gmc9: don't keep stolen memory on RavenAlex Deucher1-0/+1
Raven does not appear to be affected by the same issue as vega10. Enable the full stolen memory handling on Raven. Reserve the appropriate size at init time to avoid display artifacts and then free it at the end of init once the new FB is up and running. Bug: https://bugs.freedesktop.org/show_bug.cgi?id=106639 Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-02drm/amdgpu/gmc9: rework stolen vga memory handlingAlex Deucher1-19/+29
No functional change, just rework it in order to adjust the behavior on a per asic level. The problem is that on vega10, something corrupts the lower 8 MB of vram on the second resume from S3. This does not seem to affect Raven, other gmc9 based asics need testing. Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-29drm/amdgpu: move amdgpu_device_(vram|gtt)_locationChristian König1-2/+2
Move that into amdgpu_gmc.c since we are really deadling with GMC address space here. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-28drm/amdgpu: remove extra newline when printing VM faultsChristian König1-1/+1
Looks like a copy&paste error to me. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: Refine gmc9 VM fault print.Andrey Grodzovsky1-1/+1
The fault reports the page number where the fault happend and not the exact faulty address. Update the print message to reflect that. Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Marek Olšák <marek.olsak@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: add GMC9 support for PDs/PTs in system memoryChristian König1-1/+1
Add the necessary handling. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: add amdgpu_gmc_pd_addr helperChristian König1-4/+0
Add a helper to get the root PD address and remove the workarounds from the GMC9 code for that. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: remove gart.table_addrChristian König1-1/+1
We can easily figure out the address on the fly. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: rename gart.robj into gart.boChristian König1-2/+2
sed -i "s/gart.robj/gart.bo/" drivers/gpu/drm/amd/amdgpu/*.c sed -i "s/gart.robj/gart.bo/" drivers/gpu/drm/amd/amdgpu/*.h Just cleaning up radeon leftovers. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: amdgpu_kiq_reg_write_reg_wait() can be statickbuild test robot1-1/+1
Fixes: d790449835e6 ("drm/amdgpu: use kiq to do invalidate tlb") Reviewed-by: Emily Deng <Emily.Deng@amd.com> Signed-off-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: Don't use kiq in gpu resetEmily Deng1-11/+4
When in gpu reset, don't use kiq, it will generate more TDR. Signed-off-by: Emily Deng <Emily.Deng@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu/sriov: Only sriov runtime support use kiqEmily Deng1-7/+8
For sriov, don't use kiq in exclusive mode, as don't know how long time it will take, some times it will occur exclusive timeout. Signed-off-by: Emily Deng <Emily.Deng@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: use kiq to do invalidate tlbEmily Deng1-7/+67
To avoid the tlb flush not interrupted by world switch, use kiq and one command to do tlb invalidate. v2: Refine the invalidate lock position. Signed-off-by: Emily Deng <Emily.Deng@amd.com> Reviewed-and-Tested-by: Rex Zhu <Rex.Zhu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: move gem definitions into amdgpu_gem headerHuang Rui1-0/+1
Demangle amdgpu.h. Signed-off-by: Huang Rui <ray.huang@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-08-27drm/amdgpu: Fix page fault and kasan warning on pci device remove.Andrey Grodzovsky1-14/+2
Problem: When executing echo 1 > /sys/class/drm/card0/device/remove kasan warning as bellow and page fault happen because adev->gart.pages already freed by the time amdgpu_gart_unbind is called. BUG: KASAN: user-memory-access in amdgpu_gart_unbind+0x98/0x180 [amdgpu] Write of size 8 at addr 0000000000003648 by task bash/1828 CPU: 2 PID: 1828 Comm: bash Tainted: G W O 4.18.0-rc1-dev+ #29 Hardware name: Gigabyte Technology Co., Ltd. AX370-Gaming/AX370-Gaming-CF, BIOS F3 06/19/2017 Call Trace: dump_stack+0x71/0xab kasan_report+0x109/0x390 amdgpu_gart_unbind+0x98/0x180 [amdgpu] ttm_tt_unbind+0x43/0x60 [ttm] ttm_bo_move_ttm+0x83/0x1c0 [ttm] ttm_bo_handle_move_mem+0xb97/0xd00 [ttm] ttm_bo_evict+0x273/0x530 [ttm] ttm_mem_evict_first+0x29c/0x360 [ttm] ttm_bo_force_list_clean+0xfc/0x210 [ttm] ttm_bo_clean_mm+0xe7/0x160 [ttm] amdgpu_ttm_fini+0xda/0x1d0 [amdgpu] amdgpu_bo_fini+0xf/0x60 [amdgpu] gmc_v8_0_sw_fini+0x36/0x70 [amdgpu] amdgpu_device_fini+0x2d0/0x7d0 [amdgpu] amdgpu_driver_unload_kms+0x6a/0xd0 [amdgpu] drm_dev_unregister+0x79/0x180 [drm] amdgpu_pci_remove+0x2a/0x60 [amdgpu] pci_device_remove+0x5b/0x100 device_release_driver_internal+0x236/0x360 pci_stop_bus_device+0xbf/0xf0 pci_stop_and_remove_bus_device_locked+0x16/0x30 remove_store+0xda/0xf0 kernfs_fop_write+0x186/0x220 __vfs_write+0xcc/0x330 vfs_write+0xe6/0x250 ksys_write+0xb1/0x140 do_syscall_64+0x77/0x1e0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f66ebbb32c0 Fix: Split gmc_v{6,7,8,9}_0_gart_fini to postpone amdgpu_gart_fini to after memory managers are shut down since gart unbind happens as part of this procedure Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Acked-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-25drm/amdgpu/gmc9: clarify GPUVM fault error messageAlex Deucher1-1/+1
The address printed is the actual address, not the page. Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-13drm/amd: Use newly added interrupt source defs for SOC15.Andrey Grodzovsky1-2/+4
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-10drm/amdgpu: Present amdgpu_task_info in VM_FAULTS.Andrey Grodzovsky1-2/+7
Extract and present the reposnsible process and thread when VM_FAULT happens. v2: Use getter and setter functions. Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Acked-by: Jim Qu <Jim.Qu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-23drm/amdgpu/gmc9: disable partial wr rmw if ECC is not enabledAlex Deucher1-0/+1
The vbios mistakenly sets this bit on some boards without ECC. This can lead to reduced performance in some workloads. Disable the bit if the board does not have ECC. Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-17drm/amdgpu/gmc9: Add vega20 supportFeifei Xu1-0/+3
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Feifei Xu <Feifei.Xu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-17drm/amdgpu: Fix hardcoded base offset of vram pagesFeifei Xu1-4/+1
In gmc_v9_0_vram_gtt_location(),the vram_base_offset is hardcoded to 0 in dGPU. Fix it by reading mmMC_VM_FB_OFFSET or return zfb_phys_addr if ZFB is enabled. Signed-off-by: Feifei Xu <Feifei.Xu@amd.com> Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu/gmc9: remove unused register defsAlex Deucher1-14/+0
These got moved to the new df module so no longer used in this file. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu: init gfx9 aperture settingsFlora Cui1-2/+1
fix settings. Signed-off-by: Flora Cui <Flora.Cui@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu: Free VGA stolen memory as soon as possible.Andrey Grodzovsky1-0/+26
Reserved VRAM is used to avoid overriding pre OS FB. Once our display stack takes over we don't need the reserved VRAM anymore. v2: Remove comment, we know actually why we need to reserve the stolen VRAM. Fix return type for amdgpu_ttm_late_init. v3: Return 0 in amdgpu_bo_late_init, rebase on changes to previous patch v4: rebase v5: For GMC9 reserve always just 9M and keep the stolem memory around until GART table curruption on S3 resume is resolved. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu/gmc: steal the appropriate amount of vram for fw hand-over (v3)Alex Deucher1-6/+47
Steal 9 MB for vga emulation and fb if vga is enabled, otherwise, steal enough to cover the current display size as set by the vbios. If no memory is used (e.g., secondary or headless card), skip stolen memory reserve. v2: skip reservation if vram is limited, address Christian's comments v3: squash in fix from Harry Reviewed-and-Tested-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> (v2) Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
2018-05-15drm/amdgpu/gmc9: use amdgpu_ring_emit_reg_write_reg_wait in gpu tlb flushAlex Deucher1-5/+3
Use amdgpu_ring_emit_reg_write_reg_wait. On engines that support it, it provides a write and wait in a single packet which avoids a missed ack if a world switch happens between the request and waiting for the ack. Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11drm/amdgpu: switch to use df callback functionsHawking Zhang1-34/+1
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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