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2019-11-22drm/amdgpu: Update Arcturus golden registersJay Cornwall1-0/+1
Signed-off-by: Jay Cornwall <jay.cornwall@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu/gfx10: fix out-of-bound mqd_backup array accessXiaojie Yuan1-2/+0
Fixes: 0900a9efdb7909 ("drm/amdgpu/gfx10: fix mqd backup/restore for gfx rings (v2)") Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu/gfx10: explicitly wait for cp idle after halt/unhaltXiaojie Yuan1-2/+12
50us is not enough to wait for cp ready after gpu reset on some navi asics. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Suggested-by: Jack Xiao <Jack.Xiao@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2019-11-22Revert "drm/amd/display: enable S/G for RAVEN chip"Alex Deucher2-2/+2
This reverts commit 1c4259159132ae4ceaf7c6db37a6cf76417f73d9. S/G display is not stable with the IOMMU enabled on some platforms. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=205523 Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: disable gfxoff on original ravenAlex Deucher1-2/+7
There are still combinations of sbios and firmware that are not stable. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=204689 Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: remove experimental flag for Navi14Alex Deucher1-4/+4
5.4 and newer works fine with navi14. Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: disable gfxoff when using register read interfaceAlex Deucher1-1/+5
When gfxoff is enabled, accessing gfx registers via MMIO can lead to a hang. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=205497 Acked-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu/powerplay: properly set PP_GFXOFF_MASK (v2)Alex Deucher2-0/+11
So that the setting reflects what the hw supports. This will be used in a subsequent patch so needs to be correct. v2: squash in fix from Colin Ian King Bug: https://bugzilla.kernel.org/show_bug.cgi?id=205497 Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: fix bad DMA from INTERRUPT_CNTL2Sam Bobroff1-1/+2
The INTERRUPT_CNTL2 register expects a valid DMA address, but is currently set with a GPU MC address. This can cause problems on systems that detect the resulting DMA read from an invalid address (found on a Power8 guest). Instead, use the DMA address of the dummy page because it will always be safe. Fixes: 27ae10641e9c ("drm/amdgpu: add interupt handler implementation for si v3") Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/radeon: fix bad DMA from INTERRUPT_CNTL2Sam Bobroff3-6/+6
The INTERRUPT_CNTL2 register expects a valid DMA address, but is currently set with a GPU MC address. This can cause problems on systems that detect the resulting DMA read from an invalid address (found on a Power8 guest). Instead, use the DMA address of the dummy page because it will always be safe. Fixes: d8f60cfc9345 ("drm/radeon/kms: Add support for interrupts on r6xx/r7xx chips (v3)") Fixes: 25a857fbe973 ("drm/radeon/kms: add support for interrupts on SI") Fixes: a59781bbe528 ("drm/radeon: add support for interrupts on CIK (v5)") Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amd/display: Fix debugfs on MST connectorsMikita Lipski1-1/+9
[why] Previous patch allowed to initialize debugfs entries on both MST and SST connectors, but MST connectors get registered much later which exposed an issue of debugfs entries being initialized in the same folder. [how] Return SST debugfs entries' initialization back to where it was. For MST connectors we should initialize debugfs entries in connector register function after the connector is registered. Signed-off-by: Mikita Lipski <mikita.lipski@amd.com> Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu/nv: add asic func for fetching vbios from rom directlyAlex Deucher1-2/+22
Needed as a fallback if the vbios can't be fetched by other means. Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: put flush_delayed_work at firstYintian Tao1-3/+1
There is one regression from 042f3d7b745cd76aa To put flush_delayed_work after adev->shutdown = true which will make amdgpu_ih_process not response the irq At last, all ib ring tests will be failed just like below [drm] amdgpu: finishing device. [drm] Fence fallback timer expired on ring gfx [drm] Fence fallback timer expired on ring comp_1.0.0 [drm] Fence fallback timer expired on ring comp_1.1.0 [drm] Fence fallback timer expired on ring comp_1.2.0 [drm] Fence fallback timer expired on ring comp_1.3.0 [drm] Fence fallback timer expired on ring comp_1.0.1 amdgpu 0000:00:07.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.1.1 (-110). amdgpu 0000:00:07.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.2.1 (-110). amdgpu 0000:00:07.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.3.1 (-110). amdgpu 0000:00:07.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on sdma0 (-110). amdgpu 0000:00:07.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on sdma1 (-110). amdgpu 0000:00:07.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on uvd_enc_0.0 (-110). amdgpu 0000:00:07.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on vce0 (-110). [drm:amdgpu_device_delayed_init_work_handler [amdgpu]] *ERROR* ib ring test failed (-110). v2: replace cancel_delayed_work_sync() with flush_delayed_work() Signed-off-by: Yintian Tao <yttao@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu/vcn2.5: fix the enc loop with hw finiLeo Liu1-3/+3
Signed-off-by: Leo Liu <leo.liu@amd.com> Reviewed-by: James Zhu <James.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amd/powerplay: correct fine grained dpm force level settingEvan Quan1-0/+6
For fine grained dpm, there is only two levels supported. However to reflect correctly the current clock frequency, there is an intermediate level faked. Thus on forcing level setting, we need to treat level 2 correctly as level 1. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Kevin Wang <kevin1.wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amd/powerplay: issue no PPSMC_MSG_GetCurrPkgPwr on unsupported ASICsEvan Quan1-5/+18
Otherwise, the error message prompted will confuse user. 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>
2019-11-22drm/amd/powerplay: issue BTC on Navi during SMU setupEvan Quan1-0/+12
RunBTC is added for Navi ASIC on hardware setup. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Kenneth Feng <kenneth.feng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amd/powerplay: avoid DPM reenable process on Navi1x ASICs V2Evan Quan2-4/+28
Otherwise, without RLC reinitialization, the DPM reenablement will fail. That affects the custom pptable uploading. V2: setting/clearing uploading_custom_pp_table in smu_sys_set_pp_table() Reported-by: Matt Coffin <mcoffin13@gmail.com> Signed-off-by: Evan Quan <evan.quan@amd.com> Tested-by: Matt Coffin <mcoffin13@gmail.com> Reviewed-by: Kenneth Feng <kenneth.feng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu/gfx10: fix mqd backup/restore for gfx rings (v2)Xiaojie Yuan3-6/+7
1. no need to allocate an extra member for 'mqd_backup' array 2. backup/restore mqd to/from the correct 'mqd_backup' array slot v2: warning fix (Alex) Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: Use ARRAY_SIZE for sos_old_versionszhengbin1-1/+1
Fixes coccicheck warning: drivers/gpu/drm/amd/amdgpu/psp_v3_1.c:182:40-41: WARNING: Use ARRAY_SIZE Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: zhengbin <zhengbin13@huawei.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amd/powerplay: Use ARRAY_SIZE for smu7_profilingzhengbin1-1/+1
Fixes coccicheck warning: drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c:4946:28-29: WARNING: Use ARRAY_SIZE Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: zhengbin <zhengbin13@huawei.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdkfd: Remove duplicate functions update_mqd_hiq()Yong Zhao3-32/+4
The functions are the same as update_mqd(). Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Reviewed-by: Zhan Liu <zhan.liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: invalidate mmhub semaphore workaround in gmc9/gmc10changzhu3-2/+116
It may lose gpuvm invalidate acknowldege state across power-gating off cycle. To avoid this issue in gmc9/gmc10 invalidation, add semaphore acquire before invalidation and semaphore release after invalidation. After adding semaphore acquire before invalidation, the semaphore register become read-only if another process try to acquire semaphore. Then it will not be able to release this semaphore. Then it may cause deadlock problem. If this deadlock problem happens, it needs a semaphore firmware fix. Signed-off-by: changzhu <Changfeng.Zhu@amd.com> Acked-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: initialize vm_inv_eng0_sem for gfxhub and mmhubchangzhu6-0/+13
SW must acquire/release one of the vm_invalidate_eng*_sem around the invalidation req/ack. Through this way,it can avoid losing invalidate acknowledge state across power-gating off cycle. To use vm_invalidate_eng*_sem, it needs to initialize vm_invalidate_eng*_sem firstly. Signed-off-by: changzhu <Changfeng.Zhu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amd/amdgpu/sriov skip RLCG s/r list for arcturus VF.Jack Zhang1-1/+4
After rlcg fw 2.1, kmd driver starts to load extra fw for LIST_CNTL,GPM_MEM,SRM_MEM. We needs to skip the three fw because all rlcg related fw have been loaded by host driver. Guest driver would load the three fw fail without this change. Signed-off-by: Jack Zhang <Jack.Zhang1@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amd/amdgpu/sriov temporarily skip ras,dtm,hdcp for arcturus VFJack Zhang1-0/+36
Temporarily skip ras,dtm,hdcp initialize and terminate for arcturus VF Currently the three features haven't been enabled at SRIOV, it would trigger guest driver load fail with the bare-metal path of the three features. Signed-off-by: Jack Zhang <Jack.Zhang1@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu/gfx10: re-init clear state buffer after gpu resetXiaojie Yuan1-6/+37
This patch fixes 2nd baco reset failure with gfxoff enabled on navi1x. clear state buffer (resides in vram) is corrupted after 1st baco reset, upon gfxoff exit, CPF gets garbage header in CSIB and hangs. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22merge fix for "ftrace: Rework event_create_dir()"Stephen Rothwell1-1/+1
Reviewed-by: Kevin Wang <kevin1.wang@amd.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: remove redundant assignment to pointer write_frameColin Ian King1-1/+1
The pointer write_frame is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: simplify runtime suspendAlex Deucher1-13/+22
In the standard _PR3 case, the pci core handles the pci state. The driver only needs to handle it in the legacy ATPX case. This may fix issues with runtime suspend/resume on certain hybrid graphics laptops. Acked-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdkfd: DIQ should not use HIQ way to allocate memoryYong Zhao4-4/+4
In the mqd_diq_sdma buffer, there should be only one HIQ mqd. All DIQs should be allocated somewhere else using the regular way. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Reviewed-by: Oak Zeng <Oak.Zeng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdkfd: Delete KFD_MQD_TYPE_COMPUTEYong Zhao6-9/+4
It is the same as KFD_MQD_TYPE_CP, so delete it. As a result, we will have one less mqd mananger per device. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: Update Arcturus golden registersJay Cornwall1-0/+1
Signed-off-by: Jay Cornwall <jay.cornwall@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: implement querying ras error count for mmhub9.4Dennis Li3-1/+257
Get mmhub error counter by accessing EDC_CNT registers. v2: Add mmhub_v9_4_ prefix for local static variable and function Signed-off-by: Dennis Li <dennis.li@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Tao Zhou <tao.zhou1@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: refine query function of mmhub EDC counter in vg20Dennis Li6-362/+318
Add codes to print the detail EDC info for the subblock of mmhub v2: Move the EDC_CNT registers' defintion from mmhub_9_4 header files to mmhub_1_0 ones. Add mmhub_v1_0_ prefix for the local static variable and function. v3: squash in DC fix Signed-off-by: Dennis Li <dennis.li@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Tao Zhou <tao.zhou1@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu: define soc15_ras_field_entry for reuseDennis Li2-23/+23
The struct soc15_ras_field_entry will be reused by other IPs, such as mmhub and gc v2: rename ras_subblock_regs to gc_ras_fields_vg20, because the future asic maybe have a different table. Signed-off-by: Dennis Li <dennis.li@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Tao Zhou <tao.zhou1@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu/gfx10: fix out-of-bound mqd_backup array accessXiaojie Yuan1-2/+0
Fixes: 0bb419c76b3150 ("drm/amdgpu/gfx10: fix mqd backup/restore for gfx rings (v2)") Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22drm/amdgpu/gfx10: explicitly wait for cp idle after halt/unhaltXiaojie Yuan1-2/+12
50us is not enough to wait for cp ready after gpu reset on some navi asics. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Suggested-by: Jack Xiao <Jack.Xiao@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22amd/amdgpu: force to trigger a no-retry-fault after a retry-faultAlex Sierra1-1/+10
Only for the debugger use case. [why] Avoid endless translation retries, after an invalid address access has been issued to the GPU. Instead, the trap handler is forced to enter by generating a no-retry-fault. A s_trap instruction is inserted in the debugger case to let the wave to enter trap handler to save context. [how] Intentionally using an invalid flag combination (F and P set at the same time) to trigger a no-retry-fault, after a retry-fault happens. This is only valid under compute context. Signed-off-by: Alex Sierra <alex.sierra@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>
2019-11-22drm/amdgpu: add flag to indicate amdgpu vm contextAlex Sierra2-0/+5
Flag added to indicate if the amdgpu vm context is used for compute or graphics. Signed-off-by: Alex Sierra <alex.sierra@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>
2019-11-22drm/i915: coffeelake supports hdcp2.2Juston Li1-1/+1
This includes other platforms that utilize the same gen graphics as CFL: AML, WHL and CML. Signed-off-by: Juston Li <juston.li@intel.com> Reviewed-by: Ramalingam C <ramalingam.c@intel.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191011181918.29618-1-juston.li@intel.com
2019-11-22drm/i915/selftests: Flush the active callbacksChris Wilson1-6/+11
Before checking the current i915_active state for the asynchronous work we submitted, flush any ongoing callback. This ensures that our sampling is robust and does not sporadically fail due to bad timing as the work is running on another cpu. v2: Drop the fence callback sync, retiring under the lock should be good enough to synchronize with engine_retire() and the intel_gt_retire_requests() background worker. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191122132404.690440-1-chris@chris-wilson.co.uk
2019-11-22drm/mediatek: don't open-code drm_gem_fb_createDaniel Vetter4-107/+15
Aside: There's a few other fb_create implementations which simply check for valid buffer format (or an approximation thereof), and then call drm_gem_fb_create. For atomic drivers at least we could walk all planes and make sure the format/modifier combo is valid, and remove even more code. For non-atomic drivers that's not possible, since the format list for the primary buffer might be garbage (and most likely it is). Also delete mtk_drm_fb.[hc] since it would now only contain one function. Acked-by: CK Hu <ck.hu@mediatek.com> Cc: CK Hu <ck.hu@mediatek.com> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20191115092120.4445-4-daniel.vetter@ffwll.ch
2019-11-22Revert "drm/i915/gt: Wait for new requests in intel_gt_retire_requests()"Chris Wilson1-2/+7
From inside an active timeline in the execbuf ioctl, we may try to reclaim some space in the GGTT. We need GGTT space for all objects on !full-ppgtt platforms, and for context images everywhere. However, to free up space in the GGTT we may need to remove some pinned objects (e.g. context images) that require flushing the idle barriers to remove. For this we use the big hammer of intel_gt_wait_for_idle() However, commit 7936a22dd466 ("drm/i915/gt: Wait for new requests in intel_gt_retire_requests()") will continue spinning on the wait if a timeline is active but lacks requests, as is the case during execbuf reservation. Spinning forever is quite time consuming, so revert that commit and start again. In practice, the effect commit 7936a22dd466 was trying to achieve is accomplished by commit 1683d24c1470 ("drm/i915/gt: Move new timelines to the end of active_list"), so there is no immediate rush to replace the looping. Testcase: igt/gem_exec_reloc/basic-range Fixes: a46bfdc83fee ("drm/i915/gt: Wait for new requests in intel_gt_retire_requests()") References: 1683d24c1470 ("drm/i915/gt: Move new timelines to the end of active_list") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191121071044.97798-1-chris@chris-wilson.co.uk (cherry picked from commit 689122dcc36e08f53732adf7ae0246f62eff3eb6) [Joonas: Corrected Fixes: tag ref to match drm-intel-next-fixes] Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2019-11-22drm/i915/selftests: Force bonded submission to overlapChris Wilson1-3/+59
Bonded request submission is designed to allow requests to execute in parallel as laid out by the user. If the master request is already finished before its bonded pair is submitted, the pair were not destined to run in parallel and we lose the information about the master engine to dictate selection of the secondary. If the second request was required to be run on a particular engine in a virtual set, that should have been specified, rather than left to the whims of a random unconnected requests! In the selftest, I made the mistake of not ensuring the master would overlap with its bonded pairs, meaning that it could indeed complete before we submitted the bonds. Those bonds were then free to select any available engine in their virtual set, and not the one expected by the test. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191122112152.660743-1-chris@chris-wilson.co.uk
2019-11-22drm/i915: Use a ctor for TYPESAFE_BY_RCU i915_requestChris Wilson5-18/+64
As we start peeking into requests for longer and longer, e.g. incorporating use of spinlocks when only protected by an rcu_read_lock(), we need to be careful in how we reset the request when recycling and need to preserve any barriers that may still be in use as the request is reset for reuse. Quoting Linus Torvalds: > If there is refcounting going on then why use SLAB_TYPESAFE_BY_RCU? .. because the object can be accessed (by RCU) after the refcount has gone down to zero, and the thing has been released. That's the whole and only point of SLAB_TYPESAFE_BY_RCU. That flag basically says: "I may end up accessing this object *after* it has been free'd, because there may be RCU lookups in flight" This has nothing to do with constructors. It's ok if the object gets reused as an object of the same type and does *not* get re-initialized, because we're perfectly fine seeing old stale data. What it guarantees is that the slab isn't shared with any other kind of object, _and_ that the underlying pages are free'd after an RCU quiescent period (so the pages aren't shared with another kind of object either during an RCU walk). And it doesn't necessarily have to have a constructor, because the thing that a RCU walk will care about is (a) guaranteed to be an object that *has* been on some RCU list (so it's not a "new" object) (b) the RCU walk needs to have logic to verify that it's still the *same* object and hasn't been re-used as something else. In contrast, a SLAB_TYPESAFE_BY_RCU memory gets free'd and re-used immediately, but because it gets reused as the same kind of object, the RCU walker can "know" what parts have meaning for re-use, in a way it couidn't if the re-use was random. That said, it *is* subtle, and people should be careful. > So the re-use might initialize the fields lazily, not necessarily using a ctor. If you have a well-defined refcount, and use "atomic_inc_not_zero()" to guard the speculative RCU access section, and use "atomic_dec_and_test()" in the freeing section, then you should be safe wrt new allocations. If you have a completely new allocation that has "random stale content", you know that it cannot be on the RCU list, so there is no speculative access that can ever see that random content. So the only case you need to worry about is a re-use allocation, and you know that the refcount will start out as zero even if you don't have a constructor. So you can think of the refcount itself as always having a zero constructor, *BUT* you need to be careful with ordering. In particular, whoever does the allocation needs to then set the refcount to a non-zero value *after* it has initialized all the other fields. And in particular, it needs to make sure that it uses the proper memory ordering to do so. NOTE! One thing to be very worried about is that re-initializing whatever RCU lists means that now the RCU walker may be walking on the wrong list so the walker may do the right thing for this particular entry, but it may miss walking *other* entries. So then you can get spurious lookup failures, because the RCU walker never walked all the way to the end of the right list. That ends up being a much more subtle bug. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191122094924.629690-1-chris@chris-wilson.co.uk
2019-11-22drm/i915/selftests: Shorten infinite wait for sseuChris Wilson1-2/+1
Use our more regular igt_flush_test() to bind the wait-for-idle and error out instead of waiting around forever on critical failure. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Stuart Summers <stuart.summers@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191121233021.507400-1-chris@chris-wilson.co.uk
2019-11-22Merge tag 'drm-intel-fixes-2019-11-21' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixesDave Airlie9-18/+141
- Fix kernel oops on dumb_create ioctl on no crtc situation - Fix bad ugly colored flash on VLV/CHV related to gamma LUT update - Fix unity of the frequencies reported on PMU - Fix kernel oops on set_page_dirty using better locks around it - Protect the request pointer with RCU to prevent it being freed while we might need still - Make pool objects read-only - Restore physical addresses for fb_map to avoid corrupted page table Signed-off-by: Dave Airlie <airlied@redhat.com> From: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191121165339.GA23920@intel.com
2019-11-21drm/radeon: Prefer pcie_capability_read_word()Frederick Lawler2-53/+90
Commit 8c0d3a02c130 ("PCI: Add accessors for PCI Express Capability") added accessors for the PCI Express Capability so that drivers didn't need to be aware of differences between v1 and v2 of the PCI Express Capability. Replace pci_read_config_word() and pci_write_config_word() calls with pcie_capability_read_word() and pcie_capability_write_word(). Link: https://lore.kernel.org/r/20191118003513.10852-1-fred@fredlawl.com Signed-off-by: Frederick Lawler <fred@fredlawl.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-21drm/radeon: Replace numbers with PCI_EXP_LNKCTL2 definitionsBjorn Helgaas2-16/+28
Replace hard-coded magic numbers with the descriptive PCI_EXP_LNKCTL2 definitions. No functional change intended. Link: https://lore.kernel.org/r/20191112173503.176611-4-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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