| 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. |
| |
| The PCI-HOWTO, available from |
| <http://www.tldp.org/docs.html#howto>, contains valuable |
| information about which PCI hardware does work under Linux and which |
| doesn't. |
| |
| 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'. |
| |
| # This is also board-specific |
| config PCI_AUTO |
| bool |
| depends on PCI |
| 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. |
| |
