b3040e4067
Add DMA Engine API driver for the PL330 DMAC. This driver is supposed to be reusable by various platforms that have one or more PL330 DMACs. Atm, DMA_SLAVE and DMA_MEMCPY capabilities have been implemented. Signed-off-by: Jassi Brar <jassi.brar@samsung.com> Reviewed-by: Linus Walleij <linus.walleij@stericsson.com> [dan.j.williams@intel.com: missing slab.h and ->device_control() fixups] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/* linux/include/linux/amba/pl330.h
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*
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* Copyright (C) 2010 Samsung Electronics Co. Ltd.
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* Jaswinder Singh <jassi.brar@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __AMBA_PL330_H_
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#define __AMBA_PL330_H_
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#include <asm/hardware/pl330.h>
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struct dma_pl330_peri {
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/*
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* Peri_Req i/f of the DMAC that is
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* peripheral could be reached from.
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*/
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u8 peri_id; /* {0, 31} */
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enum pl330_reqtype rqtype;
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/* For M->D and D->M Channels */
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int burst_sz; /* in power of 2 */
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dma_addr_t fifo_addr;
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};
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struct dma_pl330_platdata {
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/*
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* Number of valid peripherals connected to DMAC.
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* This may be different from the value read from
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* CR0, as the PL330 implementation might have 'holes'
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* in the peri list or the peri could also be reached
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* from another DMAC which the platform prefers.
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*/
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u8 nr_valid_peri;
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/* Array of valid peripherals */
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struct dma_pl330_peri *peri;
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/* Bytes to allocate for MC buffer */
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unsigned mcbuf_sz;
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};
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#endif /* __AMBA_PL330_H_ */
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