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author | Len Brown <len.brown@intel.com> | 2009-01-09 08:39:43 (GMT) |
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committer | Len Brown <len.brown@intel.com> | 2009-01-09 08:39:43 (GMT) |
commit | b2576e1d4408e134e2188c967b1f28af39cd79d4 (patch) | |
tree | 004f3c82faab760f304ce031d6d2f572e7746a50 /include/asm-xtensa/dma.h | |
parent | 3cc8a5f4ba91f67bbdb81a43a99281a26aab8d77 (diff) | |
parent | 2150edc6c5cf00f7adb54538b9ea2a3e9cedca3f (diff) | |
download | linux-fsl-qoriq-b2576e1d4408e134e2188c967b1f28af39cd79d4.tar.xz |
Merge branch 'linus' into release
Diffstat (limited to 'include/asm-xtensa/dma.h')
-rw-r--r-- | include/asm-xtensa/dma.h | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/include/asm-xtensa/dma.h b/include/asm-xtensa/dma.h deleted file mode 100644 index e30f3ab..0000000 --- a/include/asm-xtensa/dma.h +++ /dev/null @@ -1,61 +0,0 @@ -/* - * include/asm-xtensa/dma.h - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2003 - 2005 Tensilica Inc. - */ - -#ifndef _XTENSA_DMA_H -#define _XTENSA_DMA_H - -#include <asm/io.h> /* need byte IO */ - -/* - * This is only to be defined if we have PC-like DMA. - * By default this is not true on an Xtensa processor, - * however on boards with a PCI bus, such functionality - * might be emulated externally. - * - * NOTE: there still exists driver code that assumes - * this is defined, eg. drivers/sound/soundcard.c (as of 2.4). - */ -#define MAX_DMA_CHANNELS 8 - -/* - * The maximum virtual address to which DMA transfers - * can be performed on this platform. - * - * NOTE: This is board (platform) specific, not processor-specific! - * - * NOTE: This assumes DMA transfers can only be performed on - * the section of physical memory contiguously mapped in virtual - * space for the kernel. For the Xtensa architecture, this - * means the maximum possible size of this DMA area is - * the size of the statically mapped kernel segment - * (XCHAL_KSEG_{CACHED,BYPASS}_SIZE), ie. 128 MB. - * - * NOTE: When the entire KSEG area is DMA capable, we substract - * one from the max address so that the virt_to_phys() macro - * works correctly on the address (otherwise the address - * enters another area, and virt_to_phys() may not return - * the value desired). - */ - -#define MAX_DMA_ADDRESS (PAGE_OFFSET + XCHAL_KIO_SIZE - 1) - - -/* Reserve and release a DMA channel */ -extern int request_dma(unsigned int dmanr, const char * device_id); -extern void free_dma(unsigned int dmanr); - -#ifdef CONFIG_PCI -extern int isa_dma_bridge_buggy; -#else -#define isa_dma_bridge_buggy (0) -#endif - - -#endif |