summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau
AgeCommit message (Collapse)Author
2023-09-19drm/nouveau/kms/nv50-: name aux channels after their connectorBen Skeggs
- removes use of VBIOS data for naming - preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-42-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: create heads after outps/connsBen Skeggs
- output info will be used later to determine MST support Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-41-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: create heads based on nvkm head maskBen Skeggs
No need to go poking HW directly, and probably shouldn't on GSP-RM. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-40-lyude@redhat.com
2023-09-19drm/nouveau/disp/nv50-: skip DCB_OUTPUT_TVBen Skeggs
We've never supported it. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-39-lyude@redhat.com
2023-09-19drm/nouveau/disp: move outp init/fini paths to chipset codeBen Skeggs
- pre-nv5x doesn't use any of this - preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-38-lyude@redhat.com
2023-09-19drm/nouveau/disp: move outp/conn construction to chipset codeBen Skeggs
- pre-nv5x doesn't use any of this, has its own version DRM-side - preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-37-lyude@redhat.com
2023-09-19drm/nouveau/disp: add dp mst id get/put methodsBen Skeggs
- preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-36-lyude@redhat.com
2023-09-19drm/nouveau/disp: add dp sst config methodBen Skeggs
This is presently unused on HW, we read a bunch of regs and calculate the watermark during the second supervisor interrupt. I don't want to change this yet as I need to re-remember how older HW works exactly, but RM wants this info via RPC. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-35-lyude@redhat.com
2023-09-19drm/nouveau/disp: move link training out of supervisorBen Skeggs
- preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-34-lyude@redhat.com
2023-09-19drm/nouveau/disp: add dp train methodBen Skeggs
- passes DPCD information from DRM to NVKM - removes NVKM's own sink caps handling - link still trained from supervisor, more patches to come Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-33-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: fixup sink D3 before tearing down linkBen Skeggs
- fixes bug preventing this on SST - implement for MST Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-32-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: flush mst disables togetherBen Skeggs
- fixes some issues tearing down modes on tiled displays Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-31-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: split DP disable+enable into two modesetsBen Skeggs
Link training can finally be moved out of the supervisor sequence, but first we need to split DP modesets into separate disable and enable sequences to be able to perform link training between them instead. - preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-30-lyude@redhat.com
2023-09-19drm/nouveau/disp: add dp rates methodBen Skeggs
- moves building of link rates table from NVKM to DRM - preparing to move link training out of supervisor Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-29-lyude@redhat.com
2023-09-19drm/nouveau/disp: add dp aux xfer methodBen Skeggs
- preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-28-lyude@redhat.com
2023-09-19drm/nouveau/disp: move dp aux pwr method to HALBen Skeggs
- preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-27-lyude@redhat.com
2023-09-19drm/nouveau/disp: add hdmi audio hal functionBen Skeggs
This just adds a hook for RM to use, HW paths remain untouched, but should probably be cleaned up to use this too at some point. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-26-lyude@redhat.com
2023-09-19drm/nouveau/disp: add output lvds config methodBen Skeggs
- was previously part of acquire() Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-25-lyude@redhat.com
2023-09-19drm/nouveau/disp: add output backlight control methodsBen Skeggs
- preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-24-lyude@redhat.com
2023-09-19drm/nouveau/disp: remove SOR routing updates from supervisorBen Skeggs
- these shouldn't be necessary now, and are done in acquire()/release() - preparation for GSP-RM, where we don't control the supervisor Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-23-lyude@redhat.com
2023-09-19drm/nouveau/disp: release outputs post-modesetBen Skeggs
Prior to this commit, KMS would call release() prior to modeset, and the second supervisor interrupt would update SOR routing if needed. Now, KMS will call release() post-modeset and update routing immediately. - preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-22-lyude@redhat.com
2023-09-19drm/nouveau/disp: move hdmi disable out of release()Ben Skeggs
- release() is being moved post-modeset, preserve hdmi behaviour for now Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-21-lyude@redhat.com
2023-09-19drm/nouveau/disp: add output hdmi config methodBen Skeggs
- was previously part of acquire() - preparation for GSP-RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-20-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: move audio enable post-modesetBen Skeggs
- adds tracking for post-UPDATE modeset operations, similar to mst[mo]'s - audio won't work on RM without this - we should probably have been doing this anyway Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-19-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: keep output state around until modeset completeBen Skeggs
- we'll want this info post-UPDATE for later patches Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-18-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: remove nv_encoder.audio.connectorBen Skeggs
- use nv_encoder.conn instead, outp->conn never changes Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-17-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: pull some common init out of OR-specific codeBen Skeggs
- cleanup before additional changes Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-16-lyude@redhat.com
2023-09-19drm/nouveau/disp: update SOR routing immediately on acquire()Ben Skeggs
- was previously delayed until second supervisor interrupt Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-15-lyude@redhat.com
2023-09-19drm/nouveau/disp: add acquire_sor/pior()Ben Skeggs
- preparing to move protocol-specific args out of acquire() again - avoid re-acquiring acquired output, will matter when enforced later - sor/pior done at same time due to shared tmds/dp handling Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-14-lyude@redhat.com
2023-09-19drm/nouveau/disp: add acquire_dac()Ben Skeggs
- preparing to move protocol-specific args out of acquire() again - avoid re-acquiring acquired output, will matter when enforced later - this one is basically just a rename Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-13-lyude@redhat.com
2023-09-19drm/nouveau/disp: shuffle to make upcoming diffs prettierBen Skeggs
- preparing to move protocol-specific args out of acquire() again - no code changes Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-12-lyude@redhat.com
2023-09-19drm/nouveau/kms: Add INHERIT ioctl to nvkm/nvif for reading IOR stateLyude Paul
Now that we're supporting things like Ada and the GSP, there's situations where we really need to actually know the display state that we're starting with when loading the driver in order to prevent breaking GSP expectations. The first step in doing this is making it so that we can read the current state of IORs from nvkm in DRM, so that we can fill in said into into the atomic state. We do this by introducing an INHERIT ioctl to nvkm/nvif. This is basically another form of ACQUIRE, except that it will only acquire the given output path for userspace if it's already set up in hardware. This way, we can go through and probe each outp object we have in DRM in order to figure out the current hardware state of each one. If the outp isn't in use, it simply returns -ENODEV. This is also part of the work that will be required for implementing GSP support for display. While the GSP should mostly work without this commit, this commit should fix some edge case bugs that can occur on initial driver load. This also paves the way for some of the initial groundwork for fastboot support. Signed-off-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-11-lyude@redhat.com
2023-09-19drm/nouveau/disp: rename internal output acquire/release functionsBen Skeggs
These will be made static later in the patch series, after the code that uses them has been cleaned up in preparation for GSP-RM support. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-10-lyude@redhat.com
2023-09-19drm/nouveau/disp: add output method to fetch edidBen Skeggs
- needed to support TMDS EDID on RM Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-9-lyude@redhat.com
2023-09-19drm/nouveau/disp: add output detect methodBen Skeggs
This will check the relevant hotplug pin and skip the DDC probe we currently do if a display is present. - preparation for GSP-RM. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-8-lyude@redhat.com
2023-09-19drm/nouveau/disp: rearrange output methodsBen Skeggs
- preparation for a bunch of API changes, to make diffs prettier Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-7-lyude@redhat.com
2023-09-19drm/nouveau/kms/nv50-: fix mst payload alloc fail crashing evoBen Skeggs
Programming -1 (vc_start_slot, if alloc fails) into HW probably isn't the best idea. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-6-lyude@redhat.com
2023-09-19drm/nouveau/mmu/gp100-: always invalidate TLBs at CACHE_LEVEL_ALLBen Skeggs
Fixes some issues when running on top of RM. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-5-lyude@redhat.com
2023-09-19drm/nouveau/gr/gf100-: lose contents of global ctxbufs across suspendBen Skeggs
Some of these buffers are quite large, and there's no need to preserve them across suspend. Mark the contents as lost to speedup suspend/resume. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-4-lyude@redhat.com
2023-09-19drm/nouveau/imem: support allocations not preserved across suspendBen Skeggs
Will initially be used to tag some large grctx allocations which don't need to be saved, to speedup suspend/resume. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-3-lyude@redhat.com
2023-09-19drm/nouveau/devinit/tu102-: remove attempt at loading PreOSBen Skeggs
From Turing, HW will already have handled this and locked-down the falcon before we get control. So this *should* be a no-op. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Danilo Krummrich <me@dakr.org> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-2-lyude@redhat.com
2023-09-15drm/nouveau/pm: refactor deprecated strncpyJustin Stitt
`strncpy` is deprecated for use on NUL-terminated destination strings [1]. We should prefer more robust and less ambiguous string interfaces. A suitable replacement is `strscpy` [2] due to the fact that it guarantees NUL-termination on the destination buffer without unnecessarily NUL-padding. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt <justinstitt@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230914-strncpy-drivers-gpu-drm-nouveau-nvkm-engine-pm-base-c-v1-1-4b09ed453f84@google.com
2023-09-15drm/nouveau/core: refactor deprecated strncpyJustin Stitt
`strncpy` is deprecated for use on NUL-terminated destination strings [1]. We should prefer more robust and less ambiguous string interfaces. A suitable replacement is `strscpy` [2] due to the fact that it guarantees NUL-termination on the destination buffer without unnecessarily NUL-padding. There is likely no bug in the current implementation due to the safeguard: | cname[sizeof(cname) - 1] = '\0'; ... however we can provide simpler and easier to understand code using the newer (and recommended) `strscpy` api. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt <justinstitt@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230914-strncpy-drivers-gpu-drm-nouveau-nvkm-core-firmware-c-v1-1-3aeae46c032f@google.com
2023-09-15drm/nouveau/nvif: refactor deprecated strncpyJustin Stitt
`strncpy` is deprecated and as such we should prefer more robust and less ambiguous string interfaces. A suitable replacement is `strscpy_pad` due to the fact that it guarantees NUL-termination on the destination buffer whilst also maintaining the NUL-padding behavior that `strncpy` provides. I am not sure whether NUL-padding is strictly needed but I see in `nvif_object_ctor()` args is memcpy'd elsewhere so I figured we'd keep the same functionality. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt <justinstitt@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230914-strncpy-drivers-gpu-drm-nouveau-nvif-client-c-v1-1-dc3b3719fcb4@google.com
2023-09-08drm/mst: Refactor the flow for payload allocation/removementWayne Lin
[Why] Today, the allocation/deallocation steps and status is a bit unclear. For instance, payload->vc_start_slot = -1 stands for "the failure of updating DPCD payload ID table" and can also represent as "payload is not allocated yet". These two cases should be handled differently and hence better to distinguish them for better understanding. [How] Define enumeration - ALLOCATION_LOCAL, ALLOCATION_DFP and ALLOCATION_REMOTE to distinguish different allocation status. Adjust the code to handle different status accordingly for better understanding the sequence of payload allocation and payload removement. For payload creation, the procedure should look like this: DRM part 1: * step 1 - update sw mst mgr variables to add a new payload * step 2 - add payload at immediate DFP DPCD payload table Driver: * Add new payload in HW and sync up with DFP by sending ACT DRM Part 2: * Send ALLOCATE_PAYLOAD sideband message to allocate bandwidth along the virtual channel. And as for payload removement, the procedure should look like this: DRM part 1: * step 1 - Send ALLOCATE_PAYLOAD sideband message to release bandwidth along the virtual channel * step 2 - Clear payload allocation at immediate DFP DPCD payload table Driver: * Remove the payload in HW and sync up with DFP by sending ACT DRM part 2: * update sw mst mgr variables to remove the payload Note that it's fine to fail when communicate with the branch device connected at immediate downstrean-facing port, but updating variables of SW mst mgr and HW configuration should be conducted anyway. That's because it's under commit_tail and we need to complete the HW programming. Changes since v1: * Remove the set but not use variable 'old_payload' in function 'nv50_msto_prepare'. Catched by kernel test robot <lkp@intel.com> Signed-off-by: Wayne Lin <Wayne.Lin@amd.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230807025639.1612361-3-Wayne.Lin@amd.com
2023-08-24drm/nouveau: uapi: don't pass NO_PREFETCH flag implicitlyDanilo Krummrich
Currently, NO_PREFETCH is passed implicitly through drm_nouveau_gem_pushbuf_push::length and drm_nouveau_exec_push::va_len. Since this is a direct representation of how the HW is programmed it isn't really future proof for a uAPI. Hence, fix this up for the new uAPI and split up the va_len field of struct drm_nouveau_exec_push, such that we keep 32bit for va_len and 32bit for flags. For drm_nouveau_gem_pushbuf_push::length at least provide NOUVEAU_GEM_PUSHBUF_NO_PREFETCH to indicate the bit shift. While at it, fix up nv50_dma_push() as well, such that the caller doesn't need to encode the NO_PREFETCH flag into the length parameter. Signed-off-by: Danilo Krummrich <dakr@redhat.com> Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230823181746.3446-1-dakr@redhat.com
2023-08-22drm/nouveau: uvmm: fix unset region pointer on remapDanilo Krummrich
Transfer the region pointer of a uvma to the new uvma(s) on re-map to prevent potential shader faults when the re-mapped uvma(s) are unmapped. Signed-off-by: Danilo Krummrich <dakr@redhat.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230820222920.2344-1-dakr@redhat.com
2023-08-22drm/nouveau: sched: avoid job races between entitiesDanilo Krummrich
If a sched job depends on a dma-fence from a job from the same GPU scheduler instance, but a different scheduler entity, the GPU scheduler does only wait for the particular job to be scheduled, rather than for the job to fully complete. This is due to the GPU scheduler assuming that there is a scheduler instance per ring. However, the current implementation, in order to avoid arbitrary amounts of kthreads, has a single scheduler instance while scheduler entities represent rings. As a workaround, set the DRM_SCHED_FENCE_DONT_PIPELINE for all out-fences in order to force the scheduler to wait for full job completion for dependent jobs from different entities and same scheduler instance. There is some work in progress [1] to address the issues of firmware schedulers; once it is in-tree the scheduler topology in Nouveau should be re-worked accordingly. [1] https://lore.kernel.org/dri-devel/20230801205103.627779-1-matthew.brost@intel.com/ Signed-off-by: Danilo Krummrich <dakr@redhat.com> Reviewed-by: Faith Ekstrand <faith.ekstrand@collaboralcom> Link: https://patchwork.freedesktop.org/patch/msgid/20230811010632.2473-1-dakr@redhat.com
2023-08-11nouveau/u_memcpya: use vmemdup_userDave Airlie
I think there are limit checks in place for most things but the new uAPI wants to not have them. Add a limit check and use the vmemdup_user helper instead. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Danilo Krummrich <dakr@redhat.com> Signed-off-by: Danilo Krummrich <dakr@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230810185020.231135-1-airlied@gmail.com
2023-08-08drm/nouveau/sched: Don't pass user flags to drm_syncobj_find_fence()Faith Ekstrand
The flags field in drm_syncobj_find_fence() takes SYNCOBJ_WAIT flags from the syncobj UAPI whereas sync->flags is from the nouveau UAPI. What we actually want is 0 flags which tells it to just try to find the fence and then return without waiting. Fixes: b88baab82871 ("drm/nouveau: implement new VM_BIND uAPI") Cc: Danilo Krummrich <dakr@redhat.com> Cc: Dave Airlie <airlied@redhat.com> Reviewed-by: Danilo Krummrich <dakr@redhat.com> Signed-off-by: Faith Ekstrand <faith.ekstrand@collabora.com> Signed-off-by: Danilo Krummrich <dakr@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230807234210.175968-1-faith.ekstrand@collabora.com
generated by cgit (git 2.34.1) at 2025-04-04 20:07:21 +0000