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authorChris Metcalf <cmetcalf@tilera.com>2013-08-02 16:45:22 -0400
committerChris Metcalf <cmetcalf@tilera.com>2013-08-06 12:55:32 -0400
commitcf89c4262bd5fa70e67953126001c08ecea4f346 (patch)
treeb968b7a7a2a9fb2140779948911e5c71b29585b1 /arch/tile/Kconfig
parenta3c4f2fb26974b5134861af8f7593040ae61a1f4 (diff)
downloadop-kernel-dev-cf89c4262bd5fa70e67953126001c08ecea4f346.zip
op-kernel-dev-cf89c4262bd5fa70e67953126001c08ecea4f346.tar.gz
tile PCI RC: support I/O space access
To enable this functionality, configure CONFIG_TILE_PCI_IO. Without this flag, the kernel still assigns I/O address ranges to the devices, but no TRIO resource and mapping support is provided. We assign disjoint I/O address ranges to separate PCIe domains. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/Kconfig')
-rw-r--r--arch/tile/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 24565a7..bfff769 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -396,6 +396,16 @@ config NO_IOMEM
config NO_IOPORT
def_bool !PCI
+config TILE_PCI_IO
+ bool "PCI I/O space support"
+ default n
+ depends on PCI
+ depends on TILEGX
+ ---help---
+ Enable PCI I/O space support on TILEGx. Since the PCI I/O space
+ is used by few modern PCIe endpoint devices, its support is disabled
+ by default to save the TRIO PIO Region resource for other purposes.
+
source "drivers/pci/Kconfig"
config TILE_USB
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