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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
- # 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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