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112 lines
4.7 KiB
C
112 lines
4.7 KiB
C
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/*-
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* Copyright (c) 2011
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* Ben Gray <ben.r.gray@gmail.com>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/**
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* sDMA device driver interface for the TI SoC
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*
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* See the ti_sdma.c file for implementation details.
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*
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* Reference:
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* OMAP35x Applications Processor
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* Technical Reference Manual
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* (omap35xx_techref.pdf)
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*/
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#ifndef _TI_DMA_H_
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#define _TI_DMA_H_
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#define TI_SDMA_ENDIAN_BIG 0x1
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#define TI_SDMA_ENDIAN_LITTLE 0x0
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#define TI_SDMA_BURST_NONE 0x0
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#define TI_SDMA_BURST_16 0x1
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#define TI_SDMA_BURST_32 0x2
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#define TI_SDMA_BURST_64 0x3
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#define TI_SDMA_DATA_8BITS_SCALAR 0x0
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#define TI_SDMA_DATA_16BITS_SCALAR 0x1
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#define TI_SDMA_DATA_32BITS_SCALAR 0x2
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#define TI_SDMA_ADDR_CONSTANT 0x0
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#define TI_SDMA_ADDR_POST_INCREMENT 0x1
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#define TI_SDMA_ADDR_SINGLE_INDEX 0x2
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#define TI_SDMA_ADDR_DOUBLE_INDEX 0x3
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/**
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* Status flags for the DMA callback
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*
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*/
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#define TI_SDMA_STATUS_DROP (1UL << 1)
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#define TI_SDMA_STATUS_HALF (1UL << 2)
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#define TI_SDMA_STATUS_FRAME (1UL << 3)
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#define TI_SDMA_STATUS_LAST (1UL << 4)
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#define TI_SDMA_STATUS_BLOCK (1UL << 5)
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#define TI_SDMA_STATUS_SYNC (1UL << 6)
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#define TI_SDMA_STATUS_PKT (1UL << 7)
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#define TI_SDMA_STATUS_TRANS_ERR (1UL << 8)
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#define TI_SDMA_STATUS_SECURE_ERR (1UL << 9)
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#define TI_SDMA_STATUS_SUPERVISOR_ERR (1UL << 10)
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#define TI_SDMA_STATUS_MISALIGNED_ADRS_ERR (1UL << 11)
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#define TI_SDMA_STATUS_DRAIN_END (1UL << 12)
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#define TI_SDMA_SYNC_FRAME (1UL << 0)
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#define TI_SDMA_SYNC_BLOCK (1UL << 1)
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#define TI_SDMA_SYNC_PACKET (TI_SDMA_SYNC_FRAME | TI_SDMA_SYNC_BLOCK)
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#define TI_SDMA_SYNC_TRIG_ON_SRC (1UL << 8)
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#define TI_SDMA_SYNC_TRIG_ON_DST (1UL << 9)
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#define TI_SDMA_IRQ_FLAG_DROP (1UL << 1)
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#define TI_SDMA_IRQ_FLAG_HALF_FRAME_COMPL (1UL << 2)
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#define TI_SDMA_IRQ_FLAG_FRAME_COMPL (1UL << 3)
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#define TI_SDMA_IRQ_FLAG_START_LAST_FRAME (1UL << 4)
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#define TI_SDMA_IRQ_FLAG_BLOCK_COMPL (1UL << 5)
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#define TI_SDMA_IRQ_FLAG_ENDOF_PKT (1UL << 7)
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#define TI_SDMA_IRQ_FLAG_DRAIN (1UL << 12)
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int ti_sdma_activate_channel(unsigned int *ch,
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void (*callback)(unsigned int ch, uint32_t status, void *data), void *data);
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int ti_sdma_deactivate_channel(unsigned int ch);
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int ti_sdma_start_xfer(unsigned int ch, unsigned int src_paddr,
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unsigned long dst_paddr, unsigned int frmcnt, unsigned int elmcnt);
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int ti_sdma_start_xfer_packet(unsigned int ch, unsigned int src_paddr,
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unsigned long dst_paddr, unsigned int frmcnt, unsigned int elmcnt,
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unsigned int pktsize);
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int ti_sdma_stop_xfer(unsigned int ch);
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int ti_sdma_enable_channel_irq(unsigned int ch, uint32_t flags);
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int ti_sdma_disable_channel_irq(unsigned int ch);
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int ti_sdma_get_channel_status(unsigned int ch, uint32_t *status);
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int ti_sdma_set_xfer_endianess(unsigned int ch, unsigned int src, unsigned int dst);
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int ti_sdma_set_xfer_burst(unsigned int ch, unsigned int src, unsigned int dst);
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int ti_sdma_set_xfer_data_type(unsigned int ch, unsigned int type);
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int ti_sdma_set_callback(unsigned int ch,
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void (*callback)(unsigned int ch, uint32_t status, void *data), void *data);
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int ti_sdma_sync_params(unsigned int ch, unsigned int trigger, unsigned int mode);
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int ti_sdma_set_addr_mode(unsigned int ch, unsigned int src_mode, unsigned int dst_mode);
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#endif /* _TI_SDMA_H_ */
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