linux-stable.git/include/linux/dma-map-ops.h, branch v6.9.2

Merge tag 'iommu-updates-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2024-01-18T23:16:57+00:00

Pull iommu updates from Joerg Roedel:
 "Core changes:
   - Fix race conditions in device probe path
   - Retire IOMMU bus_ops
   - Support for passing custom allocators to page table drivers
   - Clean up Kconfig around IOMMU_SVA
   - Support for sharing SVA domains with all devices bound to a mm
   - Firmware data parsing cleanup
   - Tracing improvements for iommu-dma code
   - Some smaller fixes and cleanups

  ARM-SMMU drivers:
   - Device-tree binding updates:
      - Add additional compatible strings for Qualcomm SoCs
      - Document Adreno clocks for Qualcomm's SM8350 SoC
   - SMMUv2:
      - Implement support for the ->domain_alloc_paging() callback
      - Ensure Secure context is restored following suspend of Qualcomm
        SMMU implementation
   - SMMUv3:
      - Disable stalling mode for the "quiet" context descriptor
      - Minor refactoring and driver cleanups

  Intel VT-d driver:
   - Cleanup and refactoring

  AMD IOMMU driver:
   - Improve IO TLB invalidation logic
   - Small cleanups and improvements

  Rockchip IOMMU driver:
   - DT binding update to add Rockchip RK3588

  Apple DART driver:
   - Apple M1 USB4/Thunderbolt DART support
   - Cleanups

  Virtio IOMMU driver:
   - Add support for iotlb_sync_map
   - Enable deferred IO TLB flushes"

* tag 'iommu-updates-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (66 commits)
  iommu: Don't reserve 0-length IOVA region
  iommu/vt-d: Move inline helpers to header files
  iommu/vt-d: Remove unused vcmd interfaces
  iommu/vt-d: Remove unused parameter of intel_pasid_setup_pass_through()
  iommu/vt-d: Refactor device_to_iommu() to retrieve iommu directly
  iommu/sva: Fix memory leak in iommu_sva_bind_device()
  dt-bindings: iommu: rockchip: Add Rockchip RK3588
  iommu/dma: Trace bounce buffer usage when mapping buffers
  iommu/arm-smmu: Convert to domain_alloc_paging()
  iommu/arm-smmu: Pass arm_smmu_domain to internal functions
  iommu/arm-smmu: Implement IOMMU_DOMAIN_BLOCKED
  iommu/arm-smmu: Convert to a global static identity domain
  iommu/arm-smmu: Reorganize arm_smmu_domain_add_master()
  iommu/arm-smmu-v3: Remove ARM_SMMU_DOMAIN_NESTED
  iommu/arm-smmu-v3: Master cannot be NULL in arm_smmu_write_strtab_ent()
  iommu/arm-smmu-v3: Add a type for the STE
  iommu/arm-smmu-v3: disable stall for quiet_cd
  iommu/qcom: restore IOMMU state if needed
  iommu/arm-smmu-qcom: Add QCM2290 MDSS compatible
  iommu/arm-smmu-qcom: Add missing GMU entry to match table
  ...

dma-debug: make dma_debug_add_bus take a const pointer

2024-01-04T13:38:29+00:00

The driver core now can handle a const struct bus_type pointer, and the
dma_debug_add_bus() call just passes on the pointer give to it to the
driver core, so make this pointer const as well to allow everyone to use
read-only struct bus_type pointers going forward.

Cc: Christoph Hellwig 
Cc: Marek Szyprowski 
Cc: Robin Murphy 
Cc:  
Reviewed-by: Robin Murphy 
Link: https://lore.kernel.org/r/2023121941-dejected-nugget-681e@gregkh
Signed-off-by: Greg Kroah-Hartman

iommu: Remove struct iommu_ops *iommu from arch_setup_dma_ops()

2023-12-12T09:18:45+00:00

This is not being used to pass ops, it is just a way to tell if an
iommu driver was probed. These days this can be detected directly via
device_iommu_mapped(). Call device_iommu_mapped() in the two places that
need to check it and remove the iommu parameter everywhere.

Reviewed-by: Jerry Snitselaar 
Reviewed-by: Lu Baolu 
Reviewed-by: Moritz Fischer 
Acked-by: Christoph Hellwig 
Acked-by: Rob Herring 
Tested-by: Hector Martin 
Signed-off-by: Jason Gunthorpe 
Link: https://lore.kernel.org/r/1-v2-16e4def25ebb+820-iommu_fwspec_p1_jgg@nvidia.com
Signed-off-by: Joerg Roedel

iommu: Retire bus ops

2023-11-27T10:03:15+00:00

With the rest of the API internals converted, it's time to finally
tackle probe_device and how we bootstrap the per-device ops association
to begin with. This ends up being disappointingly straightforward, since
fwspec users are already doing it in order to find their of_xlate
callback, and it works out that we can easily do the equivalent for
other drivers too. Then shuffle the remaining awareness of iommu_ops
into the couple of core headers that still need it, and breathe a sigh
of relief.

Ding dong the bus ops are gone!

CC: Rafael J. Wysocki 
Acked-by: Christoph Hellwig 
Acked-by: Greg Kroah-Hartman 
Reviewed-by: Lu Baolu 
Reviewed-by: Jason Gunthorpe 
Reviewed-by: Jerry Snitselaar 
Signed-off-by: Robin Murphy 
Link: https://lore.kernel.org/r/a59011ef65b4b6657cb0b7a388d786b779b61305.1700589539.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel

dma-contiguous: support per-numa CMA for all architectures

2023-07-31T15:54:28+00:00

In the commit b7176c261cdb ("dma-contiguous: provide the ability to
reserve per-numa CMA"), Barry adds DMA_PERNUMA_CMA for ARM64.

But this feature is architecture independent, so support per-numa CMA
for all architectures, and enable it by default if NUMA.

Signed-off-by: Yajun Deng 
Tested-by: Yicong Yang 
Signed-off-by: Christoph Hellwig

dma-mapping: move arch_dma_set_mask() declaration to header

2023-07-31T15:54:28+00:00

This function has a __weak definition and an override that is only used on
freescale powerpc chips. The powerpc definition however does not see the
declaration that is in a .c file:

arch/powerpc/kernel/dma-mask.c:7:6: error: no previous prototype for 'arch_dma_set_mask' [-Werror=missing-prototypes]

Move it into the linux/dma-map-ops.h header where the other arch_dma_* functions
are declared.

Signed-off-by: Arnd Bergmann 
Signed-off-by: Christoph Hellwig

dma-mapping: force bouncing if the kmalloc() size is not cache-line-aligned

2023-06-19T23:19:23+00:00

For direct DMA, if the size is small enough to have originated from a
kmalloc() cache below ARCH_DMA_MINALIGN, check its alignment against
dma_get_cache_alignment() and bounce if necessary.  For larger sizes, it
is the responsibility of the DMA API caller to ensure proper alignment.

At this point, the kmalloc() caches are properly aligned but this will
change in a subsequent patch.

Architectures can opt in by selecting DMA_BOUNCE_UNALIGNED_KMALLOC.

Link: https://lkml.kernel.org/r/20230612153201.554742-15-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Robin Murphy 
Tested-by: Isaac J. Manjarres 
Cc: Alasdair Kergon 
Cc: Ard Biesheuvel 
Cc: Arnd Bergmann 
Cc: Daniel Vetter 
Cc: Greg Kroah-Hartman 
Cc: Herbert Xu 
Cc: Jerry Snitselaar 
Cc: Joerg Roedel 
Cc: Jonathan Cameron 
Cc: Jonathan Cameron 
Cc: Lars-Peter Clausen 
Cc: Logan Gunthorpe 
Cc: Marc Zyngier 
Cc: Mark Brown 
Cc: Mike Snitzer 
Cc: "Rafael J. Wysocki" 
Cc: Saravana Kannan 
Cc: Vlastimil Babka 
Cc: Will Deacon 
Signed-off-by: Andrew Morton

dma-mapping: provide a fallback dma_default_coherent

2023-04-07T05:38:20+00:00

dma_default_coherent was decleared unconditionally at kernel/dma/mapping.c
but only decleared when any of non-coherent options is enabled in
dma-map-ops.h.

Guard the declaration in mapping.c with non-coherent options and provide
a fallback definition.

Signed-off-by: Jiaxun Yang 
Signed-off-by: Christoph Hellwig

dma-mapping: no need to pass a bus_type into get_arch_dma_ops()

2023-02-15T11:35:20+00:00

The get_arch_dma_ops() arch-specific function never does anything with
the struct bus_type that is passed into it, so remove it entirely as it
is not needed.

Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: Matt Turner 
Cc: Thomas Bogendoerfer 
Cc: "James E.J. Bottomley" 
Cc: Helge Deller 
Cc: "David S. Miller" 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: Borislav Petkov 
Cc: Dave Hansen 
Cc: x86@kernel.org
Cc: "H. Peter Anvin" 
Cc: Marek Szyprowski 
Cc: Robin Murphy 
Cc: Konrad Rzeszutek Wilk 
Cc: linux-alpha@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-ia64@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Cc: iommu@lists.linux.dev
Cc: linux-arch@vger.kernel.org
Acked-by: Christoph Hellwig 
Reviewed-by: Arnd Bergmann 
Link: https://lore.kernel.org/r/20230214140121.131859-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman

Merge tag 'rproc-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux

2022-08-08T22:16:29+00:00

Pull remoteproc updates from Bjorn Andersson:
 "This introduces support for the remoteproc on Mediatek MT8188, and
  enables caches for MT8186 SCP. It adds support for PRU cores found on
  the TI K3 AM62x SoCs.

  It moves the recovery work after a firmware crash to an unbound
  workqueue, to allow recovery to happen in parallel.

  A new DMA API is introduced to release dma_mem for a device.

  It adds support a panic handler for the Qualcomm modem remoteproc,
  with the goal of having caches flushed in memory dumps for post-mortem
  debugging and it introduces a mechanism to wait for the modem firmware
  on SM8450 to decrypt part of its memory for post-mortem debugging.

  Qualcomm sysmon is restricted to only inform remote processors about
  peers that are actually running, to avoid a race where Linux tries to
  notify a recovering remote processor about its peers new state. A
  mechanism for waiting for the sysmon connection to be established is
  also introduced, to avoid out-of-sync updates for rapidly restarting
  remote processors.

  A number of Devicetree binding cleanups and conversions to YAML are
  introduced, to facilitate Devicetree validation. Lastly it introduces
  a number of smaller fixes and cleanups in the core and a few different
  drivers"

* tag 'rproc-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux: (42 commits)
  remoteproc: qcom_q6v5_pas: Do not fail if regulators are not found
  drivers/remoteproc: fix repeated words in comments
  remoteproc: Directly use ida_alloc()/free()
  remoteproc: Use unbounded workqueue for recovery work
  remoteproc: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
  remoteproc: qcom_q6v5_pas: Deal silently with optional px and cx regulators
  remoteproc: sysmon: Send sysmon state only for running rprocs
  remoteproc: sysmon: Wait for SSCTL service to come up
  remoteproc: qcom: q6v5: Set q6 state to offline on receiving wdog irq
  remoteproc: qcom: pas: Check if coredump is enabled
  remoteproc: qcom: pas: Mark devices as wakeup capable
  remoteproc: qcom: pas: Mark va as io memory
  remoteproc: qcom: pas: Add decrypt shutdown support for modem
  remoteproc: qcom: q6v5-mss: add powerdomains to MSM8996 config
  remoteproc: qcom_q6v5: Introduce panic handler for MSS
  remoteproc: qcom_q6v5_mss: Update MBA log info
  remoteproc: qcom: correct kerneldoc
  remoteproc: qcom_q6v5_mss: map/unmap metadata region before/after use
  remoteproc: qcom: using pm_runtime_resume_and_get to simplify the code
  remoteproc: mediatek: Support MT8188 SCP
  ...