diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
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committer | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
commit | af7a535688a758d15f06a98833e6a143b29af9de (patch) | |
tree | bac5ab210bbbbe276f0e44ed84194d7c8bb16aae /arch/arm/mach-pxa/include/mach/dma.h | |
parent | 0c17e4ceedd35c78b1c7413dbd16279a350be6bc (diff) | |
parent | c41107c2d4fd31924533f4dbc4c3428acc2b5894 (diff) |
Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk
Diffstat (limited to 'arch/arm/mach-pxa/include/mach/dma.h')
-rw-r--r-- | arch/arm/mach-pxa/include/mach/dma.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/include/mach/dma.h b/arch/arm/mach-pxa/include/mach/dma.h new file mode 100644 index 00000000000..955bfe60606 --- /dev/null +++ b/arch/arm/mach-pxa/include/mach/dma.h @@ -0,0 +1,50 @@ +/* + * arch/arm/mach-pxa/include/mach/dma.h + * + * Author: Nicolas Pitre + * Created: Jun 15, 2001 + * Copyright: MontaVista Software, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __ASM_ARCH_DMA_H +#define __ASM_ARCH_DMA_H + +/* + * Descriptor structure for PXA's DMA engine + * Note: this structure must always be aligned to a 16-byte boundary. + */ + +typedef struct pxa_dma_desc { + volatile u32 ddadr; /* Points to the next descriptor + flags */ + volatile u32 dsadr; /* DSADR value for the current transfer */ + volatile u32 dtadr; /* DTADR value for the current transfer */ + volatile u32 dcmd; /* DCMD value for the current transfer */ +} pxa_dma_desc; + +typedef enum { + DMA_PRIO_HIGH = 0, + DMA_PRIO_MEDIUM = 1, + DMA_PRIO_LOW = 2 +} pxa_dma_prio; + +#if defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI) +#define HAVE_ARCH_PCI_SET_DMA_MASK 1 +#endif + +/* + * DMA registration + */ + +int __init pxa_init_dma(int num_ch); + +int pxa_request_dma (char *name, + pxa_dma_prio prio, + void (*irq_handler)(int, void *), + void *data); + +void pxa_free_dma (int dma_ch); + +#endif /* _ASM_ARCH_DMA_H */ |