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24a07a12 RH |
1 | /* |
2 | * File: arch/blackfin/mach-bf537/dma.c | |
3 | * Based on: | |
4 | * Author: | |
5 | * | |
6 | * Created: | |
7 | * Description: This file contains the simple DMA Implementation for Blackfin | |
8 | * | |
9 | * Modified: | |
10 | * Copyright 2004-2007 Analog Devices Inc. | |
11 | * | |
12 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, see the file COPYING, or write | |
26 | * to the Free Software Foundation, Inc., | |
27 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
28 | */ | |
ac86a978 BS |
29 | #include <linux/module.h> |
30 | ||
24a07a12 RH |
31 | #include <asm/blackfin.h> |
32 | #include <asm/dma.h> | |
33 | ||
211daf9d | 34 | struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = { |
24a07a12 RH |
35 | (struct dma_register *) DMA0_NEXT_DESC_PTR, |
36 | (struct dma_register *) DMA1_NEXT_DESC_PTR, | |
37 | (struct dma_register *) DMA2_NEXT_DESC_PTR, | |
38 | (struct dma_register *) DMA3_NEXT_DESC_PTR, | |
39 | (struct dma_register *) DMA4_NEXT_DESC_PTR, | |
40 | (struct dma_register *) DMA5_NEXT_DESC_PTR, | |
41 | (struct dma_register *) DMA6_NEXT_DESC_PTR, | |
42 | (struct dma_register *) DMA7_NEXT_DESC_PTR, | |
43 | (struct dma_register *) DMA8_NEXT_DESC_PTR, | |
44 | (struct dma_register *) DMA9_NEXT_DESC_PTR, | |
45 | (struct dma_register *) DMA10_NEXT_DESC_PTR, | |
46 | (struct dma_register *) DMA11_NEXT_DESC_PTR, | |
47 | (struct dma_register *) MDMA_D0_NEXT_DESC_PTR, | |
48 | (struct dma_register *) MDMA_S0_NEXT_DESC_PTR, | |
49 | (struct dma_register *) MDMA_D1_NEXT_DESC_PTR, | |
50 | (struct dma_register *) MDMA_S1_NEXT_DESC_PTR, | |
51 | }; | |
77955664 | 52 | EXPORT_SYMBOL(dma_io_base_addr); |
24a07a12 RH |
53 | |
54 | int channel2irq(unsigned int channel) | |
55 | { | |
56 | int ret_irq = -1; | |
57 | ||
58 | switch (channel) { | |
59 | case CH_PPI: | |
60 | ret_irq = IRQ_PPI; | |
61 | break; | |
62 | ||
63 | case CH_EMAC_RX: | |
64 | ret_irq = IRQ_MAC_RX; | |
65 | break; | |
66 | ||
67 | case CH_EMAC_TX: | |
68 | ret_irq = IRQ_MAC_TX; | |
69 | break; | |
70 | ||
71 | case CH_UART1_RX: | |
72 | ret_irq = IRQ_UART1_RX; | |
73 | break; | |
74 | ||
75 | case CH_UART1_TX: | |
76 | ret_irq = IRQ_UART1_TX; | |
77 | break; | |
78 | ||
79 | case CH_SPORT0_RX: | |
80 | ret_irq = IRQ_SPORT0_RX; | |
81 | break; | |
82 | ||
83 | case CH_SPORT0_TX: | |
84 | ret_irq = IRQ_SPORT0_TX; | |
85 | break; | |
86 | ||
87 | case CH_SPORT1_RX: | |
88 | ret_irq = IRQ_SPORT1_RX; | |
89 | break; | |
90 | ||
91 | case CH_SPORT1_TX: | |
92 | ret_irq = IRQ_SPORT1_TX; | |
93 | break; | |
94 | ||
95 | case CH_SPI: | |
96 | ret_irq = IRQ_SPI; | |
97 | break; | |
98 | ||
8d71e075 MF |
99 | case CH_UART0_RX: |
100 | ret_irq = IRQ_UART0_RX; | |
24a07a12 RH |
101 | break; |
102 | ||
8d71e075 MF |
103 | case CH_UART0_TX: |
104 | ret_irq = IRQ_UART0_TX; | |
24a07a12 RH |
105 | break; |
106 | ||
107 | case CH_MEM_STREAM0_SRC: | |
108 | case CH_MEM_STREAM0_DEST: | |
109 | ret_irq = IRQ_MEM_DMA0; | |
110 | break; | |
111 | ||
112 | case CH_MEM_STREAM1_SRC: | |
113 | case CH_MEM_STREAM1_DEST: | |
114 | ret_irq = IRQ_MEM_DMA1; | |
115 | break; | |
116 | } | |
117 | return ret_irq; | |
118 | } |