linux-stable.git/drivers/accel, branch v6.12.4

accel/ivpu: Prevent recovery invocation during probe and resume

2024-12-05T13:01:44+00:00

[ Upstream commit 5eaa497411197c41b0813d61ba3fbd6267049082 ]

Refactor IPC send and receive functions to allow correct
handling of operations that should not trigger a recovery process.

Expose ivpu_send_receive_internal(), which is now utilized by the D0i3
entry, DCT initialization, and HWS initialization functions.
These functions have been modified to return error codes gracefully,
rather than initiating recovery.

The updated functions are invoked within ivpu_probe() and ivpu_resume(),
ensuring that any errors encountered during these stages result in a proper
teardown or shutdown sequence. The previous approach of triggering recovery
within these functions could lead to a race condition, potentially causing
undefined behavior and kernel crashes due to null pointer dereferences.

Fixes: 45e45362e095 ("accel/ivpu: Introduce ivpu_ipc_send_receive_active()")
Signed-off-by: Karol Wachowski 
Reviewed-by: Jacek Lawrynowicz 
Link: https://patchwork.freedesktop.org/patch/msgid/20240930195322.461209-23-jacek.lawrynowicz@linux.intel.com
Signed-off-by: Jacek Lawrynowicz 
Signed-off-by: Sasha Levin

accel/ivpu: Fix NOC firewall interrupt handling

2024-10-30T09:17:00+00:00

The NOC firewall interrupt means that the HW prevented
unauthorized access to a protected resource, so there
is no need to trigger device reset in such case.

To facilitate security testing add firewall_irq_counter
debugfs file that tracks firewall interrupts.

Fixes: 8a27ad81f7d3 ("accel/ivpu: Split IP and buttress code")
Cc: stable@vger.kernel.org # v6.11+
Signed-off-by: Andrzej Kacprowski 
Reviewed-by: Jacek Lawrynowicz 
Reviewed-by: Jeffrey Hugo 
Signed-off-by: Jacek Lawrynowicz 
Link: https://patchwork.freedesktop.org/patch/msgid/20241017144958.79327-1-jacek.lawrynowicz@linux.intel.com

accel/qaic: Fix the for loop used to walk SG table

2024-10-12T20:55:55+00:00

Only for_each_sgtable_dma_sg() should be used to walk through a SG table
to grab correct bus address and length pair after calling DMA MAP API on
a SG table as DMA MAP APIs updates the SG table and for_each_sgtable_sg()
walks through the original SG table.

Fixes: ff13be830333 ("accel/qaic: Add datapath")
Fixes: 129776ac2e38 ("accel/qaic: Add control path")
Signed-off-by: Pranjal Ramajor Asha Kanojiya 
Reviewed-by: Jeffrey Hugo 
Signed-off-by: Jeffrey Hugo 
Reviewed-by: Jacek Lawrynowicz 
Link: https://patchwork.freedesktop.org/patch/msgid/20241004193252.3888544-1-quic_jhugo@quicinc.com

Merge tag 'dma-mapping-6.12-2024-09-19' of git://git.infradead.org/users/hch/dma-mapping

2024-09-19T09:12:49+00:00

Pull dma-mapping updates from Christoph Hellwig:

 - support DMA zones for arm64 systems where memory starts at > 4GB
   (Baruch Siach, Catalin Marinas)

 - support direct calls into dma-iommu and thus obsolete dma_map_ops for
   many common configurations (Leon Romanovsky)

 - add DMA-API tracing (Sean Anderson)

 - remove the not very useful return value from various dma_set_* APIs
   (Christoph Hellwig)

 - misc cleanups and minor optimizations (Chen Y, Yosry Ahmed, Christoph
   Hellwig)

* tag 'dma-mapping-6.12-2024-09-19' of git://git.infradead.org/users/hch/dma-mapping:
  dma-mapping: reflow dma_supported
  dma-mapping: reliably inform about DMA support for IOMMU
  dma-mapping: add tracing for dma-mapping API calls
  dma-mapping: use IOMMU DMA calls for common alloc/free page calls
  dma-direct: optimize page freeing when it is not addressable
  dma-mapping: clearly mark DMA ops as an architecture feature
  vdpa_sim: don't select DMA_OPS
  arm64: mm: keep low RAM dma zone
  dma-mapping: don't return errors from dma_set_max_seg_size
  dma-mapping: don't return errors from dma_set_seg_boundary
  dma-mapping: don't return errors from dma_set_min_align_mask
  scsi: check that busses support the DMA API before setting dma parameters
  arm64: mm: fix DMA zone when dma-ranges is missing
  dma-mapping: direct calls for dma-iommu
  dma-mapping: call ->unmap_page and ->unmap_sg unconditionally
  arm64: support DMA zone above 4GB
  dma-mapping: replace zone_dma_bits by zone_dma_limit
  dma-mapping: use bit masking to check VM_DMA_COHERENT

dma-mapping: don't return errors from dma_set_max_seg_size

2024-08-29T04:22:49+00:00

A NULL dev->dma_parms indicates either a bus that is not DMA capable or
grave bug in the implementation of the bus code.

There isn't much the driver can do in terms of error handling for either
case, so just warn and continue as DMA operations will fail anyway.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Robin Murphy 
Reviewed-by: Martin K. Petersen 
Acked-by: Ulf Hansson  # For MMC

accel: Use XArray instead of IDR for minors

2024-08-26T15:06:22+00:00

Accel minor management is based on DRM (and is also using struct
drm_minor internally), since DRM is using XArray for minors, it makes
sense to also convert accel.
As the two implementations are identical (only difference being the
underlying xarray), move the accel_minor_* functionality to DRM.

Signed-off-by: Michał Winiarski 
Acked-by: James Zhu 
Acked-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20240823163048.2676257-3-michal.winiarski@intel.com
Signed-off-by: Christian König

Merge drm/drm-next into drm-misc-next

2024-07-29T07:35:54+00:00

Backmerging to get a late RC of v6.10 before moving into v6.11.

Signed-off-by: Thomas Zimmermann

accel/ivpu: Add missing MODULE_FIRMWARE metadata

2024-07-15T09:13:04+00:00

Modules that load firmware from various paths at runtime must declare
those paths at compile time, via the MODULE_FIRMWARE macro, so that the
firmware paths are included in the module's metadata.

The accel/ivpu driver loads firmware but lacks this metadata,
preventing dracut from correctly locating firmware files. Fix it.

Fixes: 9ab43e95f922 ("accel/ivpu: Switch to generation based FW names")
Fixes: 02d5b0aacd05 ("accel/ivpu: Implement firmware parsing and booting")
Signed-off-by: Alexander F. Lent 
Reviewed-by: Jacek Lawrynowicz 
Signed-off-by: Jacek Lawrynowicz 
Link: https://patchwork.freedesktop.org/patch/msgid/20240709-fix-ivpu-firmware-metadata-v3-1-55f70bba055b@xanderlent.com

Merge tag 'drm-habanalabs-next-2024-06-23' of https://github.com/HabanaAI/drivers.accel.habanalabs.kernel into drm-next

2024-06-27T23:41:04+00:00

This tag contains habanalabs driver changes for v6.11.

The notable changes are:

- uAPI changes:
  - Use device-name directory in debugfs-driver-habanalabs.
  - Expose server type in debugfs.

- New features and improvements:
  - Gradual sleep in polling memory macro.
  - Reduce Gaudi2 MSI-X interrupt count to 128.
  - Add Gaudi2-D revision support.

- Firmware related changes:
  - Add timestamp to CPLD info.
  - Gaudi2: Assume hard-reset by firmware upon MC SEI severe error.
  - Align Gaudi2 interrupt names.
  - Check for errors after preboot is ready.

- Bug fixes and code cleanups:
  - Move heartbeat work initialization to early init.
  - Fix a race when receiving events during reset.
  - Change the heartbeat scheduling point.

- Maintainers:
  - Change habanalabs maintainer and git repo path.

Signed-off-by: Dave Airlie 
From: Ofir Bitton 
Link: https://patchwork.freedesktop.org/patch/msgid/ZnfIjTH5AYQvPe7n@obitton-vm-u22.habana-labs.com

accel/habanalabs: gradual sleep in polling memory macro

2024-06-23T06:53:33+00:00

It’s better to avoid long sleeps right from the beginning of the polling
since the data may be available much sooner than the sleep period.
Because polling host memory is inexpensive, this change gradually
increases the sleep time up to the user-requested period.

Signed-off-by: Didi Freiman 
Reviewed-by: Ofir Bitton 
Signed-off-by: Ofir Bitton