1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_ARCH_CRIS_DMA_H 3 #define _ASM_ARCH_CRIS_DMA_H 4 5 /* Defines for using and allocating dma channels. */ 6 7 #define MAX_DMA_CHANNELS 10 8 9 #define NETWORK_ETH0_TX_DMA_NBR 0 /* Ethernet 0 out. */ 10 #define NETWORK_ETH0 RX_DMA_NBR 1 /* Ethernet 0 in. */ 11 12 #define IO_PROC_DMA0_TX_DMA_NBR 2 /* IO processor DMA0 out. */ 13 #define IO_PROC_DMA0_RX_DMA_NBR 3 /* IO processor DMA0 in. */ 14 15 #define ATA_TX_DMA_NBR 2 /* ATA interface out. */ 16 #define ATA_RX_DMA_NBR 3 /* ATA interface in. */ 17 18 #define ASYNC_SER2_TX_DMA_NBR 2 /* Asynchronous serial port 2 out. */ 19 #define ASYNC_SER2_RX_DMA_NBR 3 /* Asynchronous serial port 2 in. */ 20 21 #define IO_PROC_DMA1_TX_DMA_NBR 4 /* IO processor DMA1 out. */ 22 #define IO_PROC_DMA1_RX_DMA_NBR 5 /* IO processor DMA1 in. */ 23 24 #define ASYNC_SER1_TX_DMA_NBR 4 /* Asynchronous serial port 1 out. */ 25 #define ASYNC_SER1_RX_DMA_NBR 5 /* Asynchronous serial port 1 in. */ 26 27 #define SYNC_SER0_TX_DMA_NBR 4 /* Synchronous serial port 0 out. */ 28 #define SYNC_SER0_RX_DMA_NBR 5 /* Synchronous serial port 0 in. */ 29 30 #define EXTDMA0_TX_DMA_NBR 6 /* External DMA 0 out. */ 31 #define EXTDMA1_RX_DMA_NBR 7 /* External DMA 1 in. */ 32 33 #define ASYNC_SER0_TX_DMA_NBR 6 /* Asynchronous serial port 0 out. */ 34 #define ASYNC_SER0_RX_DMA_NBR 7 /* Asynchronous serial port 0 in. */ 35 36 #define SYNC_SER1_TX_DMA_NBR 6 /* Synchronous serial port 1 out. */ 37 #define SYNC_SER1_RX_DMA_NBR 7 /* Synchronous serial port 1 in. */ 38 39 #define NETWORK_ETH1_TX_DMA_NBR 6 /* Ethernet 1 out. */ 40 #define NETWORK_ETH1_RX_DMA_NBR 7 /* Ethernet 1 in. */ 41 42 #define EXTDMA2_TX_DMA_NBR 8 /* External DMA 2 out. */ 43 #define EXTDMA3_RX_DMA_NBR 9 /* External DMA 3 in. */ 44 45 #define STRCOP_TX_DMA_NBR 8 /* Stream co-processor out. */ 46 #define STRCOP_RX_DMA_NBR 9 /* Stream co-processor in. */ 47 48 #define ASYNC_SER3_TX_DMA_NBR 8 /* Asynchronous serial port 3 out. */ 49 #define ASYNC_SER3_RX_DMA_NBR 9 /* Asynchronous serial port 3 in. */ 50 51 enum dma_owner { 52 dma_eth0, 53 dma_eth1, 54 dma_iop0, 55 dma_iop1, 56 dma_ser0, 57 dma_ser1, 58 dma_ser2, 59 dma_ser3, 60 dma_sser0, 61 dma_sser1, 62 dma_ata, 63 dma_strp, 64 dma_ext0, 65 dma_ext1, 66 dma_ext2, 67 dma_ext3 68 }; 69 70 int crisv32_request_dma(unsigned int dmanr, const char *device_id, 71 unsigned options, unsigned bandwidth, 72 enum dma_owner owner); 73 void crisv32_free_dma(unsigned int dmanr); 74 75 /* Masks used by crisv32_request_dma options: */ 76 #define DMA_VERBOSE_ON_ERROR 1 77 #define DMA_PANIC_ON_ERROR (2|DMA_VERBOSE_ON_ERROR) 78 #define DMA_INT_MEM 4 79 80 #endif /* _ASM_ARCH_CRIS_DMA_H */ 81