From f1006257893917dfb1e0d74cb47b18c0e2908693 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Sat, 16 Jun 2012 16:41:05 -0400 Subject: bounce: allow use of bounce pool via config option The tilegx USB OHCI support needs the bounce pool since we're not using the IOMMU to handle 32-bit addresses. Signed-off-by: Chris Metcalf --- arch/tile/Kconfig | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/tile/Kconfig') diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index cf4bb69ea8e..932e4430f7f 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -406,6 +406,12 @@ config TILE_USB Provides USB host adapter support for the built-in EHCI and OHCI interfaces on TILE-Gx chips. +# USB OHCI needs the bounce pool since tilegx will often have more +# than 4GB of memory, but we don't currently use the IOTLB to present +# a 32-bit address to OHCI. So we need to use a bounce pool instead. +config NEED_BOUNCE_POOL + def_bool USB_OHCI_HCD + config HOTPLUG bool "Support for hot-pluggable devices" ---help--- -- cgit v1.2.3