diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2022-08-25 10:51:42 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2022-09-15 15:59:16 +0200 |
| commit | be7f3f901c619e24c93b8044c074306feedd8ee9 (patch) | |
| tree | ab75c282a3d657d40bd3a15d3fb81057cafba8ee /arch/arm/mach-footbridge/Kconfig | |
| parent | e7536617baec3b4717a37795cec306df9d655d07 (diff) | |
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>
Diffstat (limited to 'arch/arm/mach-footbridge/Kconfig')
| -rw-r--r-- | arch/arm/mach-footbridge/Kconfig | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig index 1a3676109654..b7a4e403ba0f 100644 --- a/arch/arm/mach-footbridge/Kconfig +++ b/arch/arm/mach-footbridge/Kconfig @@ -46,7 +46,6 @@ endmenu # Footbridge support config FOOTBRIDGE def_bool y - select ARCH_HAS_PHYS_TO_DMA select ARCH_MIGHT_HAVE_PC_SERIO select ISA_DMA_API |