| /* |
| * 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 |