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-rw-r--r--lib/Kconfig59
1 files changed, 55 insertions, 4 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index e96089499371..7a913937888b 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -55,6 +55,22 @@ config ARCH_USE_CMPXCHG_LOCKREF
config ARCH_HAS_FAST_MULTIPLIER
bool
+config INDIRECT_PIO
+ bool "Access I/O in non-MMIO mode"
+ depends on ARM64
+ help
+ On some platforms where no separate I/O space exists, there are I/O
+ hosts which can not be accessed in MMIO mode. Using the logical PIO
+ mechanism, the host-local I/O resource can be mapped into system
+ logic PIO space shared with MMIO hosts, such as PCI/PCIe, then the
+ system can access the I/O devices with the mapped-logic PIO through
+ I/O accessors.
+
+ This way has relatively little I/O performance cost. Please make
+ sure your devices really need this configure item enabled.
+
+ When in doubt, say N.
+
config CRC_CCITT
tristate "CRC-CCITT functions"
help
@@ -413,15 +429,50 @@ config SGL_ALLOC
bool
default n
+config NEED_SG_DMA_LENGTH
+ bool
+
+config NEED_DMA_MAP_STATE
+ bool
+
+config ARCH_DMA_ADDR_T_64BIT
+ def_bool 64BIT || PHYS_ADDR_T_64BIT
+
+config IOMMU_HELPER
+ bool
+
+config ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ bool
+
+config ARCH_HAS_SYNC_DMA_FOR_CPU
+ bool
+ select NEED_DMA_MAP_STATE
+
config DMA_DIRECT_OPS
bool
- depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT)
- default n
+ depends on HAS_DMA
+
+config DMA_NONCOHERENT_OPS
+ bool
+ depends on HAS_DMA
+ select DMA_DIRECT_OPS
+
+config DMA_NONCOHERENT_MMAP
+ bool
+ depends on DMA_NONCOHERENT_OPS
+
+config DMA_NONCOHERENT_CACHE_SYNC
+ bool
+ depends on DMA_NONCOHERENT_OPS
config DMA_VIRT_OPS
bool
- depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT)
- default n
+ depends on HAS_DMA
+
+config SWIOTLB
+ bool
+ select DMA_DIRECT_OPS
+ select NEED_DMA_MAP_STATE
config CHECK_SIGNATURE
bool