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config PCI
bool "PCI support"
depends on SYS_SUPPORTS_PCI
help
Find out whether you have a PCI motherboard. PCI is the name of a
bus system, i.e. the way the CPU talks to the other stuff inside
your box. If you have PCI, say Y, otherwise N.
config SH_PCIDMA_NONCOHERENT
bool "Cache and PCI noncoherent"
depends on PCI
default y
help
Enable this option if your platform does not have a CPU cache which
remains coherent with PCI DMA. It is safest to say 'Y', although you
will see better performance if you can say 'N', because the PCI DMA
code will not have to flush the CPU's caches. If you have a PCI host
bridge integrated with your SH CPU, refer carefully to the chip specs
to see if you can say 'N' here. Otherwise, leave it as 'Y'.
# Temporary config option for transitioning off of PCI_AUTO
config PCI_NEW
bool
depends on PCI
default y if CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7780 || \
CPU_SUBTYPE_SH7785 || CPU_SH5 || \
CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
# This is also board-specific
config PCI_AUTO
bool
depends on PCI && !PCI_NEW
default y
config PCI_AUTO_UPDATE_RESOURCES
bool
depends on PCI_AUTO
default y if !SH_DREAMCAST
help
Selecting this option will cause the PCI auto code to leave your
BAR values alone. Otherwise they will be updated automatically. If
for some reason, you have a board that simply refuses to work
with its resources updated beyond what they are when the device
is powered up, set this to N. Everyone else will want this as Y.
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