linux/arch/x86
Nicolas Saenz Julienne e380a0394c x86/PCI: sta2x11: use default DMA address translation
The devices found behind this PCIe chip have unusual DMA mapping
constraints as there is an AMBA interconnect placed in between them and
the different PCI endpoints. The offset between physical memory
addresses and AMBA's view is provided by reading a PCI config register,
which is saved and used whenever DMA mapping is needed.

It turns out that this DMA setup can be represented by properly setting
'dma_pfn_offset', 'dma_bus_mask' and 'dma_mask' during the PCI device
enable fixup. And ultimately allows us to get rid of this device's
custom DMA functions.

Aside from the code deletion and DMA setup, sta2x11_pdev_to_mapping() is
moved to avoid warnings whenever CONFIG_PM is not enabled.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-11-11 10:52:19 +01:00
..
boot x86/boot/acpi: Move get_cmdline_acpi_rsdp() under #ifdef guard 2019-10-18 13:33:38 +02:00
configs
crypto
entry Kbuild updates for v5.4 2019-09-20 08:36:47 -07:00
events perf/x86/intel/pt: Fix base for single entry topa 2019-10-20 14:42:28 +02:00
hyperv x86/hyperv: Make vapic support x2apic mode 2019-10-15 10:57:09 +02:00
ia32
include x86/PCI: sta2x11: use default DMA address translation 2019-11-11 10:52:19 +01:00
kernel Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-10-20 06:31:14 -04:00
kvm KVM: nVMX: Don't leak L1 MMIO regions to L2 2019-10-22 19:04:40 +02:00
lib x86/asm: Fix MWAITX C-state hint value 2019-10-08 13:25:24 +02:00
math-emu
mm Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-09-28 08:14:15 -07:00
net
oprofile
pci x86/PCI: sta2x11: use default DMA address translation 2019-11-11 10:52:19 +01:00
platform efi/x86: Do not clean dummy variable in kexec path 2019-10-07 15:24:36 +02:00
power Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-09-17 12:04:39 -07:00
purgatory Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-09-28 13:37:41 -07:00
ras
realmode
tools
um
video
xen xen: patch for 5.4-rc5 2019-10-26 06:32:12 -04:00
.gitignore
Kbuild
Kconfig x86/PCI: sta2x11: use default DMA address translation 2019-11-11 10:52:19 +01:00
Kconfig.cpu
Kconfig.debug
Makefile
Makefile_32.cpu
Makefile.um