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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /* Defines for using and allocating dma channels. */ |
3 | ||
4 | #ifndef _ASM_ARCH_DMA_H | |
5 | #define _ASM_ARCH_DMA_H | |
6 | ||
7 | #define MAX_DMA_CHANNELS 10 | |
8 | ||
9 | /* dma0 and dma1 used for network (ethernet) */ | |
10 | #define NETWORK_TX_DMA_NBR 0 | |
11 | #define NETWORK_RX_DMA_NBR 1 | |
12 | ||
13 | /* dma2 and dma3 shared by par0, scsi0, ser2 and ata */ | |
14 | #define PAR0_TX_DMA_NBR 2 | |
15 | #define PAR0_RX_DMA_NBR 3 | |
16 | #define SCSI0_TX_DMA_NBR 2 | |
17 | #define SCSI0_RX_DMA_NBR 3 | |
18 | #define SER2_TX_DMA_NBR 2 | |
19 | #define SER2_RX_DMA_NBR 3 | |
20 | #define ATA_TX_DMA_NBR 2 | |
21 | #define ATA_RX_DMA_NBR 3 | |
22 | ||
23 | /* dma4 and dma5 shared by par1, scsi1, ser3 and extdma0 */ | |
24 | #define PAR1_TX_DMA_NBR 4 | |
25 | #define PAR1_RX_DMA_NBR 5 | |
26 | #define SCSI1_TX_DMA_NBR 4 | |
27 | #define SCSI1_RX_DMA_NBR 5 | |
28 | #define SER3_TX_DMA_NBR 4 | |
29 | #define SER3_RX_DMA_NBR 5 | |
30 | #define EXTDMA0_TX_DMA_NBR 4 | |
31 | #define EXTDMA0_RX_DMA_NBR 5 | |
32 | ||
33 | /* dma6 and dma7 shared by ser0, extdma1 and mem2mem */ | |
34 | #define SER0_TX_DMA_NBR 6 | |
35 | #define SER0_RX_DMA_NBR 7 | |
36 | #define EXTDMA1_TX_DMA_NBR 6 | |
37 | #define EXTDMA1_RX_DMA_NBR 7 | |
38 | #define MEM2MEM_TX_DMA_NBR 6 | |
39 | #define MEM2MEM_RX_DMA_NBR 7 | |
40 | ||
41 | /* dma8 and dma9 shared by ser1 and usb */ | |
42 | #define SER1_TX_DMA_NBR 8 | |
43 | #define SER1_RX_DMA_NBR 9 | |
44 | #define USB_TX_DMA_NBR 8 | |
45 | #define USB_RX_DMA_NBR 9 | |
46 | ||
47 | #endif | |
63245d2c MS |
48 | |
49 | enum dma_owner | |
50 | { | |
51 | dma_eth, | |
52 | dma_ser0, | |
53 | dma_ser1, /* Async and sync */ | |
54 | dma_ser2, | |
55 | dma_ser3, /* Async and sync */ | |
56 | dma_ata, | |
57 | dma_par0, | |
58 | dma_par1, | |
59 | dma_ext0, | |
60 | dma_ext1, | |
61 | dma_int6, | |
62 | dma_int7, | |
63 | dma_usb, | |
64 | dma_scsi0, | |
65 | dma_scsi1 | |
66 | }; | |
67 | ||
68 | /* Masks used by cris_request_dma options: */ | |
69 | #define DMA_VERBOSE_ON_ERROR (1<<0) | |
70 | #define DMA_PANIC_ON_ERROR ((1<<1)|DMA_VERBOSE_ON_ERROR) | |
71 | ||
72 | int cris_request_dma(unsigned int dmanr, const char * device_id, | |
73 | unsigned options, enum dma_owner owner); | |
74 | ||
75 | void cris_free_dma(unsigned int dmanr, const char * device_id); |