linux/arch/arm/mach-footbridge/include/mach
Arnd Bergmann be7f3f901c ARM: footbridge: remove custom DMA address handling
Footbridge is the last Arm platform that has its own
__virt_to_bus()/__bus_to_virt()/phys_to_dma()/dma_to_phys() abstraction,
but this is just a simple offset now.

For PCI devices, the offset that is programmed into the PCI bridge must
also be set in each device using dma_direct_set_offset().  As Arm does
not have a pcibios_bus_add_device() helper yet, just use a bus notifier
for this.

For the ISA DMA, drivers now pass a non-translated physical address into
set_dma_addr(), so they have to be converted back with the corresponding
isa_bus_to_virt() function and then into the correct bus address with
the offset using the isa_dma_dev.

Tested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-09-15 15:59:16 +02:00
..
hardware.h ARM: remove support for NOMMU ARMv4/v5 2022-03-17 09:13:13 +01:00
irqs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
isa-dma.h ARM: footbridge: move isa-dma support into footbridge 2022-09-09 17:14:34 +02:00
memory.h ARM: footbridge: remove custom DMA address handling 2022-09-15 15:59:16 +02:00
uncompress.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00