From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: To: From: Benjamin Herrenschmidt Date: Tue, 01 Dec 2009 18:08:32 +1100 Subject: [PATCH 2/5] powerpc/macio: Add dma_parms support to macio Message-Id: <20091201070832.A8B621007D2@ozlabs.org> Cc: tj@kernel.org, linuxppc-dev@lists.ozlabs.org, jeff@garzik.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This adds dma_parms to macio devices and initializes them with default values. This will allow pata_macio to setup the appropriate max segment size for the block layer. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/macio.h | 1 + drivers/macintosh/macio_asic.c | 5 +++++ 2 files changed, 6 insertions(+) --- linux-work.orig/arch/powerpc/include/asm/macio.h 2009-11-27 14:38:05.000000000 +1100 +++ linux-work/arch/powerpc/include/asm/macio.h 2009-11-27 14:38:20.000000000 +1100 @@ -39,6 +39,7 @@ struct macio_dev struct macio_bus *bus; /* macio bus this device is on */ struct macio_dev *media_bay; /* Device is part of a media bay */ struct of_device ofdev; + struct device_dma_parameters dma_parms; /* ide needs that */ int n_resources; struct resource resource[MACIO_DEV_COUNT_RESOURCES]; int n_interrupts; Index: linux-work/drivers/macintosh/macio_asic.c =================================================================== --- linux-work.orig/drivers/macintosh/macio_asic.c 2009-11-27 14:39:24.000000000 +1100 +++ linux-work/drivers/macintosh/macio_asic.c 2009-11-27 16:37:39.000000000 +1100 @@ -379,6 +379,11 @@ static struct macio_dev * macio_add_one_ dev->ofdev.dev.parent = parent; dev->ofdev.dev.bus = &macio_bus_type; dev->ofdev.dev.release = macio_release_dev; + dev->ofdev.dev.dma_parms = &dev->dma_parms; + + /* Standard DMA paremeters */ + dma_set_max_seg_size(&dev->ofdev.dev, 65536); + dma_set_seg_boundary(&dev->ofdev.dev, 0xffffffff); #ifdef CONFIG_PCI /* Set the DMA ops to the ones from the PCI device, this could be