media: staging/ipu7: add IPU7 DMA APIs and MMU mapping

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The Intel IPU7 has internal microprocessor which runs the firmware
The microprocessor accesses system DRAM by its internal 32-bit virtual
address space. Driver should setup the MMU table and expose the DMA
APIs for memory buffer mapping.

This patch adds the IPU MMU and a DMA mapping implementation to setup
the internal MMU hardware.

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@xs4all.nl>

...

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Bingbu Cao 2025-05-29 12:13:18 +08:00 • committed by Hans Verkuil

parent b7fe4c0019

commit 71d81c2568

4 changed files with 1790 additions and 0 deletions

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477

drivers/staging/media/ipu7/ipu7-dma.c

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46

drivers/staging/media/ipu7/ipu7-dma.h

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853

drivers/staging/media/ipu7/ipu7-mmu.c

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414

drivers/staging/media/ipu7/ipu7-mmu.h

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