linux/drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c, branch v6.12

drm/amdkfd: Relocate TBA/TMA to opposite side of VM hole

2024-02-16T20:41:50Z

The TBA and TMA, along with an unused IB allocation, reside at low addresses in the VM address space. A stray VM fault which hits these pages must be serviced by making their page table entries invalid. The scheduler depends upon these pages being resident and fails, preventing a debugger from inspecting the failure state. By relocating these pages above 47 bits in the VM address space they can only be reached when bits [63:48] are set to 1. This makes it much less likely for a misbehaving program to generate accesses to them. The current placement at VA (PAGE_SIZE*2) is readily hit by a NULL access with a small offset. v2: - Move it to the reserved space to avoid concflicts with Mesa - Add macros to make reserved space management easier v3: - Move VM max PFN calculation into AMDGPU_VA_RESERVED macros Cc: Arunpravin Paneer Selvam Cc: Christian Koenig Reviewed-by: Christian König Signed-off-by: Jay Cornwall Signed-off-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: Enable seq64 manager and fix bugs

2024-01-22T22:13:18Z

- Enable the seq64 mapping sequence. - Fix wflinfo va conflict and other bugs. v1: - The seq64 area needs to be included in the AMDGPU_VA_RESERVED_SIZE otherwise the areas will conflict with user space allocations (Alex) - It needs to be mapped read only in the user VM (Alex) v2: - Instead of just one define for TOP/BOTTOM reserved space separate them into two (Christian) - Fix the CPU and VA calculations and while at it also cleanup error handling and kerneldoc (Christian) Signed-off-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Christian König

Merge tag 'drm-msm-next-2023-12-15' of https://gitlab.freedesktop.org/drm/msm into drm-next

2023-12-19T21:54:03Z

Updates for v6.8: Core: - Add support for SDM670, SM8650 - Handle the CFG interconnect to fix the obscure hangs / timeouts on register write - Kconfig fix for QMP dependency - DT schema fixes DPU: - Add support for SDM670, SM8650 - Enable SmartDMA on SM8350 and SM8450 - Correct UBWC settings for SC8280XP - Fix catalog settings for SC8180X - Actually make use of the version to switch between QSEED3/3LITE/4 scalers - Use devres-managed and drm-managed allocations where appropriate - misc other fixes - Enabled YUV writeback on SC7280, SM8250 - Enabled writeback on SM8350, SM8450 - CRC fix when encoder is selected as the input source - other misc fixes MDP4: - Use devres-managed and drm-managed allocations where appropriate - flush vblank event on CRTC disable MDP5: - Use devres-managed and drm-managed allocations where appropriate DP: - Add support for SM8650 - Enable PM runtime support - Merge msm-specific debugfs dir with the generic one - Described DisplayPort on SM8150 in DeviceTree bindings - Moved dp_display_get_next_bridge() to probe() DSI: - Add support for SM8650 - Enable PM runtime support GPU/GEM: - demote userspace triggerable warnings to debug - add GEM object metadata UAPI - move GPU devcoredumps to GPU device - fix hangcheck to skip retired submits - expose UBWC config to userspace - fix a680 chip-id - drm_exec conversion - drm/ci: remove rebase-merge directory (to unblock CI) [airlied: fix drm_exec/amd interaction] Signed-off-by: Dave Airlie From: Rob Clark Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGs9auYqmo-7NSd9FsbNBCDf7aBevd=4xkcF3A5G_OGvMQ@mail.gmail.com

drm/amdgpu: Implement a new 64bit sequence memory driver

2023-11-17T14:29:53Z

Developed a new driver which allocates a 64bit memory on each request in sequence order. At the moment, user queue fence memory is the main consumer of this seq64 driver. v2: Worked on review comments from Christian for the following modifications - Move driver name from "semaphore" to "seq64" - Remove unnecessary PT/PD mapping - Move enable_mes check into init/fini functions. v3: Worked on review comments from Christian - drop enable_mes check - use DECLARE_BITMAP for bit array - added kerneldoc for seq64 v4: Worked on review comments from Christian - Rename amdgpu_seq64_get name with amdgpu_seq64_alloc v5: Worked on review comments from Christian - Fix seq64 lockdep warning - move fpriv->seq64_va check into amdgpu_seq64_unmap() - make the function amdgpu_seq64_unmap() return as void. - reserve the buffers as not interruptible. v6: port to drm_exec (Alex) v7: disable for now (Arun) Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Christian König Signed-off-by: Alex Deucher