105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
/*
|
|
* Header for the new SH dmaengine driver
|
|
*
|
|
* Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
|
|
*
|
|
* 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 SH_DMA_H
|
|
#define SH_DMA_H
|
|
|
|
#include <linux/dmaengine.h>
|
|
#include <linux/list.h>
|
|
#include <linux/shdma-base.h>
|
|
#include <linux/types.h>
|
|
|
|
struct device;
|
|
|
|
/* Used by slave DMA clients to request DMA to/from a specific peripheral */
|
|
struct sh_dmae_slave {
|
|
struct shdma_slave shdma_slave; /* Set by the platform */
|
|
};
|
|
|
|
/*
|
|
* Supplied by platforms to specify, how a DMA channel has to be configured for
|
|
* a certain peripheral
|
|
*/
|
|
struct sh_dmae_slave_config {
|
|
int slave_id;
|
|
dma_addr_t addr;
|
|
u32 chcr;
|
|
char mid_rid;
|
|
};
|
|
|
|
struct sh_dmae_channel {
|
|
unsigned int offset;
|
|
unsigned int dmars;
|
|
unsigned int dmars_bit;
|
|
unsigned int chclr_offset;
|
|
};
|
|
|
|
struct sh_dmae_pdata {
|
|
const struct sh_dmae_slave_config *slave;
|
|
int slave_num;
|
|
const struct sh_dmae_channel *channel;
|
|
int channel_num;
|
|
unsigned int ts_low_shift;
|
|
unsigned int ts_low_mask;
|
|
unsigned int ts_high_shift;
|
|
unsigned int ts_high_mask;
|
|
const unsigned int *ts_shift;
|
|
int ts_shift_num;
|
|
u16 dmaor_init;
|
|
unsigned int chcr_offset;
|
|
u32 chcr_ie_bit;
|
|
|
|
unsigned int dmaor_is_32bit:1;
|
|
unsigned int needs_tend_set:1;
|
|
unsigned int no_dmars:1;
|
|
unsigned int chclr_present:1;
|
|
unsigned int slave_only:1;
|
|
};
|
|
|
|
/* DMA register */
|
|
#define SAR 0x00
|
|
#define DAR 0x04
|
|
#define TCR 0x08
|
|
#define CHCR 0x0C
|
|
#define DMAOR 0x40
|
|
|
|
#define TEND 0x18 /* USB-DMAC */
|
|
|
|
/* DMAOR definitions */
|
|
#define DMAOR_AE 0x00000004
|
|
#define DMAOR_NMIF 0x00000002
|
|
#define DMAOR_DME 0x00000001
|
|
|
|
/* Definitions for the SuperH DMAC */
|
|
#define REQ_L 0x00000000
|
|
#define REQ_E 0x00080000
|
|
#define RACK_H 0x00000000
|
|
#define RACK_L 0x00040000
|
|
#define ACK_R 0x00000000
|
|
#define ACK_W 0x00020000
|
|
#define ACK_H 0x00000000
|
|
#define ACK_L 0x00010000
|
|
#define DM_INC 0x00004000
|
|
#define DM_DEC 0x00008000
|
|
#define DM_FIX 0x0000c000
|
|
#define SM_INC 0x00001000
|
|
#define SM_DEC 0x00002000
|
|
#define SM_FIX 0x00003000
|
|
#define RS_IN 0x00000200
|
|
#define RS_OUT 0x00000300
|
|
#define TS_BLK 0x00000040
|
|
#define TM_BUR 0x00000020
|
|
#define CHCR_DE 0x00000001
|
|
#define CHCR_TE 0x00000002
|
|
#define CHCR_IE 0x00000004
|
|
|
|
bool shdma_chan_filter(struct dma_chan *chan, void *arg);
|
|
|
|
#endif
|