media: intel/ipu6: add IPU6 DMA mapping API and MMU table

Browse source

The Intel IPU6 has internal microcontrollers (scalar processor, SP) which
are used to execute the firmware. The SPs can access IPU internal memory
and system DRAM mapped to its an internal 32-bit virtual address space.

This patch adds a driver for the IPU MMU and a DMA mapping implementation
using the internal MMU. The system IOMMU may be used besides the IPU MMU.

Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

...

This commit is contained in:

Bingbu Cao 2024-01-31 17:50:57 +08:00 • committed by Hans Verkuil

parent fb26412f83

commit 9163d83573

4 changed files with 1439 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

502

drivers/media/pci/intel/ipu6/ipu6-dma.c

View file

19

drivers/media/pci/intel/ipu6/ipu6-dma.h

View file

845

drivers/media/pci/intel/ipu6/ipu6-mmu.c

View file

73

drivers/media/pci/intel/ipu6/ipu6-mmu.h

View file