The following patch series adds USB 2.0 support for the Wii PowerPC platform via the EHCI controller present in the "Hollywood" chipset of the video game console. v1 -> v2 - enable per-device DMA coherent support on the Wii - add a generic dmabounce based on ARM dmabounce - make PowerPC and ARM use the generic dmabounce support (ARM just compile-tested) - do not bounce buffers at the USB layer - handle bounce buffers on the Wii at the platform support layer via the DMA API - introduce a flag HCD_NO_COHERENT_MEM to avoid using coherent memory for USB buffers - make the "Hollywood" EHCI controller use HCD_NO_COHERENT_MEM and honor MEM2 DMA constraints to solve the platform restrictions accessing coherent memory. Albert Herranz (9): powerpc: add per-device dma coherent support wii: have generic dma coherent dma-coherent: fix bitmap access races add generic dmabounce support arm: use generic dmabounce support powerpc: add optional per-device dmabounce support wii: add mem2 dma mapping ops USB: add HCD_NO_COHERENT_MEM host controller driver flag wii: hollywood ehci controller support arch/Kconfig | 3 + arch/arm/Kconfig | 4 +- arch/arm/common/Kconfig | 6 +- arch/arm/common/dmabounce.c | 376 +++-------------- arch/arm/include/asm/device.h | 2 +- arch/powerpc/boot/wii.c | 34 ++ arch/powerpc/include/asm/device.h | 3 + arch/powerpc/include/asm/dma-mapping.h | 1 + arch/powerpc/include/asm/wii.h | 25 ++ arch/powerpc/kernel/dma.c | 5 + arch/powerpc/platforms/embedded6xx/Kconfig | 3 + arch/powerpc/platforms/embedded6xx/Makefile | 2 +- arch/powerpc/platforms/embedded6xx/wii-dma.c | 557 ++++++++++++++++++++++++++ drivers/base/dma-coherent.c | 11 + drivers/usb/core/buffer.c | 15 +- drivers/usb/core/hcd.c | 50 ++- drivers/usb/core/hcd.h | 13 +- drivers/usb/host/Kconfig | 8 + drivers/usb/host/ehci-hcd.c | 5 + drivers/usb/host/ehci-hlwd.c | 233 +++++++++++ drivers/usb/host/ehci.h | 23 + include/linux/dmabounce.h | 71 ++++ lib/Kconfig | 10 + lib/Makefile | 2 + lib/dmabounce.c | 389 ++++++++++++++++++ 25 files changed, 1512 insertions(+), 339 deletions(-) create mode 100644 arch/powerpc/include/asm/wii.h create mode 100755 arch/powerpc/platforms/embedded6xx/wii-dma.c create mode 100644 drivers/usb/host/ehci-hlwd.c create mode 100644 include/linux/dmabounce.h create mode 100644 lib/dmabounce.c -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
