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59207e6380
mirror_ubuntu-kernels/drivers/gpu/drm/i915
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Imre Deak 59207e6380 drm/i915/adlp: Fix register corruption after DDI clock enabling 
Accessing the DDI_BUF_CTL register without the port's DDI clock being
enabled (to set/clear the TypeC PHY ownership for the port) can lead to
a corrupted value read during any i915 register access right after the
DDI clock is enabled.

The root cause is the way clock synchronization works for this register,
controlled by the CHICKEN_DCPR_1 DDI_CLOCK_REG_ACCESS flag. Correctly
this flag should be cleared on ADLP (see the Bspec link below), however
after bootup the flag is set.

One easily reproducible issue is an unclaimed register access of the
PWR_WELL_CTL_DDI2 register, programmed right after DDI clock enabling to
enable the port's DDI_IO power well (see the HSDES, VLK links below).
With the correct setting above this problem can't be reproduced.

Bspec: 49189
HSDES: 18019028154
VLK: 28328, 28655

Cc: Jouni Högander <jouni.hogander@intel.com>
Cc: Arthur J Runyan <arthur.j.runyan@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Acked-by: Arthur J Runyan <arthur.j.runyan@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220323201749.288566-1-imre.deak@intel.com
2022-04-06 19:23:38 +03:00
..
display drm/i915/display/psr: Use continuos full frame to handle frontbuffer invalidations 2022-04-06 08:42:59 -07:00
gem drm/i915: Move intel_vtd_active and run_as_guest to i915_utils 2022-03-30 12:04:01 +01:00
gt drm/i915/pmu: Drop redundant IS_VALLEYVIEW check in __get_rc6() 2022-04-06 15:47:38 +05:30
gvt drm/i915/dmc: split out dmc registers to a separate file 2022-04-01 10:06:30 +03:00
pxp drm/i915: include uapi/drm/i915_drm.h directly where needed 2022-03-17 20:06:04 +02:00
selftests drm/i915: Use str_yes_no() 2022-03-02 08:48:13 -08:00
.gitignore
i915_active_types.h drm/i915/active: remove useless i915_utils.h include 2021-12-13 12:04:44 +02:00
i915_active.c drm/i915: Remove unused bits of i915_vma/active api 2021-12-20 16:26:09 +01:00
i915_active.h drm/i915: Remove unused bits of i915_vma/active api 2021-12-20 16:26:09 +01:00
i915_cmd_parser.c drm/i915: include linux/highmem.h and linux/swap.h where needed 2022-03-04 11:15:25 +02:00
i915_cmd_parser.h drm/i915: split out i915_cmd_parser.h from i915_drv.h 2022-01-10 15:43:09 +02:00
i915_config.c drm/i915: remove IS_ACTIVE 2021-10-07 11:04:05 -07:00
i915_debugfs_params.c drm/i915: Use to_gt() helper 2021-12-17 21:51:59 -08:00
i915_debugfs_params.h
i915_debugfs.c drm/i915: Move intel_vtd_active and run_as_guest to i915_utils 2022-03-30 12:04:01 +01:00
i915_debugfs.h
i915_deps.c drm/i915: Break out the i915_deps utility 2021-12-22 08:52:57 +01:00
i915_deps.h drm/i915: Break out the i915_deps utility 2021-12-22 08:52:57 +01:00
i915_driver.c drm/i915: Move intel_vtd_active and run_as_guest to i915_utils 2022-03-30 12:04:01 +01:00
i915_driver.h drm/i915: Move intel_vtd_active and run_as_guest to i915_utils 2022-03-30 12:04:01 +01:00
i915_drv.h drm/i915: Remove dead members from dev_priv 2022-04-04 16:59:37 +03:00
i915_file_private.h drm/i915: split out i915_file_private.h from i915_drv.h 2022-02-14 13:16:28 +02:00
i915_fixed.h
i915_gem_evict.c Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next 2022-02-23 15:03:51 -05:00
i915_gem_evict.h Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next 2022-02-23 15:03:51 -05:00
i915_gem_gtt.c Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next 2022-02-23 15:03:51 -05:00
i915_gem_gtt.h drm/i915: Remove short-term pins from execbuf, v6. 2022-01-18 12:19:30 +01:00
i915_gem_ww.c drm/i915: Break out dma_resv ww locking utilities to separate files 2021-06-17 14:22:59 +01:00
i915_gem_ww.h drm/i915: Ditch the i915_gem_ww_ctx loop member 2021-08-20 09:39:41 +01:00
i915_gem.c Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next 2022-02-23 15:03:51 -05:00
i915_gem.h drm/i915: Break out dma_resv ww locking utilities to separate files 2021-06-17 14:22:59 +01:00
i915_getparam.c Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next 2022-02-23 15:03:51 -05:00
i915_getparam.h drm/i915: split out i915_getparam.h from i915_drv.h 2022-01-10 15:43:05 +02:00
i915_gpu_error.c drm/i915/dmc: abstract GPU error state dump 2022-04-01 10:06:22 +03:00
i915_gpu_error.h drm/i915/dmc: abstract GPU error state dump 2022-04-01 10:06:22 +03:00
i915_ioc32.c drm/i915: split out i915_getparam.h from i915_drv.h 2022-01-10 15:43:05 +02:00
i915_ioc32.h
i915_ioctl.c drm/i915: split out i915_reg_read_ioctl() to i915_ioctl.[ch] 2022-01-21 09:59:22 +02:00
i915_ioctl.h drm/i915: split out i915_reg_read_ioctl() to i915_ioctl.[ch] 2022-01-21 09:59:22 +02:00
i915_iosf_mbi.h drm/i915: abstraction for iosf to compile on all archs 2021-10-27 00:32:01 -07:00
i915_irq.c drm/i915/reg: split out icl_dsi_regs.h 2022-02-21 12:06:15 +02:00
i915_irq.h drm/i915/hpd: hide struct intel_hotplug_funcs 2022-02-09 13:39:35 +02:00
i915_memcpy.c
i915_memcpy.h
i915_mitigations.c drm/i915: move the DRIVER_* macros to i915_driver.[ch] 2022-02-10 11:44:25 +02:00
i915_mitigations.h
i915_mm.c drm/i915: Skip remap_io_mapping() for non-x86 platforms 2021-12-08 13:26:14 -08:00
i915_mm.h drm/i915: Fix header test for !CONFIG_X86 2022-02-07 12:56:49 +00:00
i915_module.c Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next 2022-02-23 15:03:51 -05:00
i915_params.c drm/i915/display: Allow users to disable PSR2 2022-03-03 05:50:47 -08:00
i915_params.h drm/i915: Test all device memory on probing 2021-12-14 15:08:20 +05:30
i915_pci.c drm/i915/ats-m: add ATS-M platform info 2022-03-29 12:57:59 -07:00
i915_pci.h drm/i915/pci: rename functions to have i915_pci prefix 2021-08-26 10:50:19 +03:00
i915_perf_oa_regs.h drm/i915/perf: Express OA register ranges with i915_range 2022-02-02 07:52:23 -08:00
i915_perf_types.h drm/i915: Only include i915_reg.h from .c files 2022-02-02 07:59:54 -08:00
i915_perf.c Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next 2022-02-23 15:03:51 -05:00
i915_perf.h drm/i915: Use a table for i915_init/exit (v2) 2021-07-22 12:05:17 +02:00
i915_pmu.c drm/i915/pmu: Drop redundant IS_VALLEYVIEW check in __get_rc6() 2022-04-06 15:47:38 +05:30
i915_pmu.h drm/i915: Use a table for i915_init/exit (v2) 2021-07-22 12:05:17 +02:00
i915_priolist_types.h
i915_pvinfo.h
i915_query.c drm/i915: Use to_gt() helper 2021-12-17 21:51:59 -08:00
i915_query.h
i915_reg_defs.h drm/i915: Add REG_GENMASK64() and REG_FIELD_GET64() 2022-02-16 15:00:57 +02:00
i915_reg.h drm/i915/adlp: Fix register corruption after DDI clock enabling 2022-04-06 19:23:38 +03:00
i915_request.c Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next 2022-02-23 15:03:51 -05:00
i915_request.h drm/i915: Use struct vma_resource instead of struct vma_snapshot 2022-01-11 10:54:11 +01:00
i915_scatterlist.c drm: move the buddy allocator from i915 into common drm 2022-01-19 08:17:07 +01:00
i915_scatterlist.h drm/i915: Introduce refcounted sg-tables 2021-11-01 18:10:49 +01:00
i915_scheduler_types.h drm/i915/guc: Implement GuC priority management 2021-07-27 17:32:27 -07:00
i915_scheduler.c drm/i915: move scheduler slabs to direct module init/exit 2021-07-28 17:18:56 +02:00
i915_scheduler.h drm/i915: move scheduler slabs to direct module init/exit 2021-07-28 17:18:56 +02:00
i915_selftest.h
i915_suspend.c drm/i915: split out PCI config space registers from i915_reg.h 2022-01-10 16:17:46 +02:00
i915_suspend.h
i915_sw_fence_work.c drm/i915: Drop stealing of bits from i915_sw_fence function pointer 2021-11-30 17:52:15 -08:00
i915_sw_fence_work.h drm/i915: Drop error handling from dma_fence_work 2021-07-16 21:47:39 +02:00
i915_sw_fence.c drm/i915: Drop stealing of bits from i915_sw_fence function pointer 2021-11-30 17:52:15 -08:00
i915_sw_fence.h drm/i915: Drop stealing of bits from i915_sw_fence function pointer 2021-11-30 17:52:15 -08:00
i915_switcheroo.c drm/i915/driver: add i915_driver_ prefix to functions 2021-11-17 11:47:55 +02:00
i915_switcheroo.h
i915_syncmap.c
i915_syncmap.h
i915_sysfs.c drm/i915: Move GT registers to their own header file 2022-02-02 07:59:14 -08:00
i915_sysfs.h
i915_trace_points.c
i915_trace.h drm/i915/trace: split out display trace to a separate file 2021-12-09 11:21:46 +02:00
i915_ttm_buddy_manager.c drm: implement a method to free unused pages 2022-02-22 13:03:00 +01:00
i915_ttm_buddy_manager.h drm: improve drm_buddy_alloc function 2022-02-22 12:54:41 +01:00
i915_user_extensions.c
i915_user_extensions.h
i915_utils.c drm/i915: Move intel_vtd_active and run_as_guest to i915_utils 2022-03-30 12:04:01 +01:00
i915_utils.h drm/i915: Split i915_run_as_guest into x86 and non-x86 2022-04-06 09:02:37 -07:00
i915_vgpu.c drm/i915: Add object locking to i915_gem_evict_for_node and i915_gem_evict_something, v2. 2022-01-18 12:18:03 +01:00
i915_vgpu.h
i915_vma_resource.c drm/i915: Fix vma resource freeing 2022-01-26 14:02:31 +01:00
i915_vma_resource.h drm/i915: Use struct vma_resource instead of struct vma_snapshot 2022-01-11 10:54:11 +01:00
i915_vma_types.h Merge drm/drm-next into drm-intel-gt-next 2022-01-18 10:54:02 +00:00
i915_vma.c Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next 2022-02-23 15:03:51 -05:00
i915_vma.h drm/i915: Add i915_vma_unbind_unlocked, and take obj lock for i915_vma_unbind, v2. 2022-01-18 12:19:29 +01:00
intel_device_info.c drm/i915: Move intel_vtd_active and run_as_guest to i915_utils 2022-03-30 12:04:01 +01:00
intel_device_info.h drm/i915/dg2: Tile 4 plane format support 2022-02-24 17:34:48 +02:00
intel_dram.c drm/i915: Use str_yes_no() 2022-03-02 08:48:13 -08:00
intel_dram.h
intel_gvt.c drm/i915: Use to_gt() helper 2021-12-17 21:51:59 -08:00
intel_gvt.h
intel_mchbar_regs.h drm/i915: Clean up SSKPD/MLTR defines 2022-02-18 08:42:17 +02:00
intel_memory_region.c drm/i915: include uapi/drm/i915_drm.h directly where needed 2022-03-17 20:06:04 +02:00
intel_memory_region.h drm/i915: include uapi/drm/i915_drm.h directly where needed 2022-03-17 20:06:04 +02:00
intel_pch.c drm/i915: Move intel_vtd_active and run_as_guest to i915_utils 2022-03-30 12:04:01 +01:00
intel_pch.h drm/i915: s/JSP2/ICP2/ PCH 2022-02-25 19:03:12 +02:00
intel_pci_config.h drm/i915: split out PCI config space registers from i915_reg.h 2022-01-10 16:17:46 +02:00
intel_pcode.c drm/i915: Only include i915_reg.h from .c files 2022-02-02 07:59:54 -08:00
intel_pcode.h drm/i915/pcode: rename sandybridge_pcode_* to snb_pcode_* 2022-01-13 15:20:57 +02:00
intel_pm_types.h drm/i915: split out intel_pm_types.h 2021-12-03 11:28:12 +02:00
intel_pm.c drm/i915/adlp: Fix register corruption after DDI clock enabling 2022-04-06 19:23:38 +03:00
intel_pm.h drm/i915/display/adlp: Fix programing of PIPE_MBUS_DBOX_CTL 2022-03-30 13:34:46 -07:00
intel_region_ttm.c drm/i915/ttm: Drop region reference counting 2021-11-25 09:36:16 +01:00
intel_region_ttm.h drm/i915/ttm: Drop region reference counting 2021-11-25 09:36:16 +01:00
intel_runtime_pm.c drm/i915/selftests: Disable runtime pm wakeref tracking for the mock device 2022-02-11 13:22:10 +02:00
intel_runtime_pm.h drm/i915/selftests: Disable runtime pm wakeref tracking for the mock device 2022-02-11 13:22:10 +02:00
intel_sbi.c drm/i915: Only include i915_reg.h from .c files 2022-02-02 07:59:54 -08:00
intel_sbi.h drm/i915: rename intel_sideband.[ch] to intel_sbi.[ch] 2021-10-14 18:05:04 +03:00
intel_step.c drm/i915/adl-n: Add stepping info 2022-03-03 20:40:03 -08:00
intel_step.h drm/i915: Rename GT_STEP to GRAPHICS_STEP 2021-11-02 13:05:40 -07:00
intel_uncore.c drm/i915/gt: Use parameterized RING_MI_MODE 2022-02-16 12:29:46 -08:00
intel_uncore.h drm/i915: Only include i915_reg.h from .c files 2022-02-02 07:59:54 -08:00
intel_wakeref.c
intel_wakeref.h drm/i915/guc: Take engine PM when a context is pinned with GuC submission 2021-10-15 10:37:26 -07:00
intel_wopcm.c drm/i915/wopcm: Handle pre-programmed WOPCM registers 2022-01-26 11:47:24 -08:00
intel_wopcm.h
Kconfig Linux 5.17-rc6 2022-02-28 14:57:14 +10:00
Kconfig.debug drm/i915: Improve debug Kconfig texts a bit 2021-07-06 10:10:07 +02:00
Kconfig.profile
Kconfig.unstable
Makefile drm/i915: Move power well get/put/enable/disable functions to a new file 2022-02-28 17:03:33 +02:00
TODO.txt
vlv_sideband_reg.h drm/i915: split out vlv sideband registers from i915_reg.h 2022-01-10 16:17:50 +02:00
vlv_sideband.c drm/i915: Only include i915_reg.h from .c files 2022-02-02 07:59:54 -08:00
vlv_sideband.h drm/i915: split out vlv sideband registers from i915_reg.h 2022-01-10 16:17:50 +02:00
vlv_suspend.c drm/i915: Use str_on_off() 2022-03-02 08:48:23 -08:00
vlv_suspend.h