| Guennadi Liakhovetski | 8b1935e | 2010-02-11 16:50:14 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Header for the new SH dmaengine driver |
| 3 | * |
| 4 | * Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | #ifndef ASM_DMAENGINE_H |
| 11 | #define ASM_DMAENGINE_H |
| 12 | |
| Guennadi Liakhovetski | c014906 | 2010-02-18 16:30:02 +0000 | [diff] [blame] | 13 | #include <linux/dmaengine.h> |
| 14 | #include <linux/list.h> |
| 15 | |
| Guennadi Liakhovetski | 8b1935e | 2010-02-11 16:50:14 +0000 | [diff] [blame] | 16 | #include <asm/dma-register.h> |
| 17 | |
| 18 | #define SH_DMAC_MAX_CHANNELS 6 |
| 19 | |
| 20 | enum sh_dmae_slave_chan_id { |
| 21 | SHDMA_SLAVE_SCIF0_TX, |
| 22 | SHDMA_SLAVE_SCIF0_RX, |
| 23 | SHDMA_SLAVE_SCIF1_TX, |
| 24 | SHDMA_SLAVE_SCIF1_RX, |
| 25 | SHDMA_SLAVE_SCIF2_TX, |
| 26 | SHDMA_SLAVE_SCIF2_RX, |
| 27 | SHDMA_SLAVE_SCIF3_TX, |
| 28 | SHDMA_SLAVE_SCIF3_RX, |
| 29 | SHDMA_SLAVE_SCIF4_TX, |
| 30 | SHDMA_SLAVE_SCIF4_RX, |
| 31 | SHDMA_SLAVE_SCIF5_TX, |
| 32 | SHDMA_SLAVE_SCIF5_RX, |
| 33 | SHDMA_SLAVE_SIUA_TX, |
| 34 | SHDMA_SLAVE_SIUA_RX, |
| 35 | SHDMA_SLAVE_SIUB_TX, |
| 36 | SHDMA_SLAVE_SIUB_RX, |
| 37 | SHDMA_SLAVE_NUMBER, /* Must stay last */ |
| 38 | }; |
| 39 | |
| 40 | struct sh_dmae_slave_config { |
| 41 | enum sh_dmae_slave_chan_id slave_id; |
| 42 | dma_addr_t addr; |
| 43 | u32 chcr; |
| 44 | char mid_rid; |
| 45 | }; |
| 46 | |
| 47 | struct sh_dmae_channel { |
| 48 | unsigned int offset; |
| 49 | unsigned int dmars; |
| 50 | unsigned int dmars_bit; |
| 51 | }; |
| 52 | |
| 53 | struct sh_dmae_pdata { |
| 54 | struct sh_dmae_slave_config *slave; |
| 55 | int slave_num; |
| 56 | struct sh_dmae_channel *channel; |
| 57 | int channel_num; |
| 58 | unsigned int ts_low_shift; |
| 59 | unsigned int ts_low_mask; |
| 60 | unsigned int ts_high_shift; |
| 61 | unsigned int ts_high_mask; |
| 62 | unsigned int *ts_shift; |
| 63 | int ts_shift_num; |
| 64 | u16 dmaor_init; |
| 65 | }; |
| 66 | |
| 67 | struct device; |
| 68 | |
| 69 | /* Used by slave DMA clients to request DMA to/from a specific peripheral */ |
| 70 | struct sh_dmae_slave { |
| 71 | enum sh_dmae_slave_chan_id slave_id; /* Set by the platform */ |
| 72 | struct device *dma_dev; /* Set by the platform */ |
| 73 | struct sh_dmae_slave_config *config; /* Set by the driver */ |
| 74 | }; |
| 75 | |
| Guennadi Liakhovetski | c014906 | 2010-02-18 16:30:02 +0000 | [diff] [blame] | 76 | struct sh_dmae_regs { |
| 77 | u32 sar; /* SAR / source address */ |
| 78 | u32 dar; /* DAR / destination address */ |
| 79 | u32 tcr; /* TCR / transfer count */ |
| 80 | }; |
| 81 | |
| 82 | struct sh_desc { |
| 83 | struct sh_dmae_regs hw; |
| 84 | struct list_head node; |
| 85 | struct dma_async_tx_descriptor async_tx; |
| 86 | enum dma_data_direction direction; |
| 87 | dma_cookie_t cookie; |
| 88 | size_t partial; |
| 89 | int chunks; |
| 90 | int mark; |
| 91 | }; |
| 92 | |
| Guennadi Liakhovetski | 8b1935e | 2010-02-11 16:50:14 +0000 | [diff] [blame] | 93 | #endif |