1 /*
2 * the simple DMA Implementation for Blackfin
3 *
4 * Copyright 2008 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2 or later.
7 */
8
9 #include <linux/module.h>
10
11 #include <asm/blackfin.h>
12 #include <asm/dma.h>
13
14 struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = {
15 (struct dma_register *) DMA0_NEXT_DESC_PTR,
16 (struct dma_register *) DMA1_NEXT_DESC_PTR,
17 (struct dma_register *) DMA2_NEXT_DESC_PTR,
18 (struct dma_register *) DMA3_NEXT_DESC_PTR,
19 (struct dma_register *) DMA4_NEXT_DESC_PTR,
20 (struct dma_register *) DMA5_NEXT_DESC_PTR,
21 (struct dma_register *) DMA6_NEXT_DESC_PTR,
22 (struct dma_register *) DMA7_NEXT_DESC_PTR,
23 (struct dma_register *) DMA8_NEXT_DESC_PTR,
24 (struct dma_register *) DMA9_NEXT_DESC_PTR,
25 (struct dma_register *) DMA10_NEXT_DESC_PTR,
26 (struct dma_register *) DMA11_NEXT_DESC_PTR,
27 (struct dma_register *) MDMA_S0_NEXT_DESC_PTR,
28 (struct dma_register *) MDMA_D0_NEXT_DESC_PTR,
29 (struct dma_register *) MDMA_S1_NEXT_DESC_PTR,
30 (struct dma_register *) MDMA_D1_NEXT_DESC_PTR,
31 };
32 EXPORT_SYMBOL(dma_io_base_addr);
33
channel2irq(unsigned int channel)34 int channel2irq(unsigned int channel)
35 {
36 int ret_irq = -1;
37
38 switch (channel) {
39 case CH_PPI:
40 ret_irq = IRQ_PPI;
41 break;
42
43 case CH_EMAC_RX:
44 ret_irq = IRQ_MAC_RX;
45 break;
46
47 case CH_EMAC_TX:
48 ret_irq = IRQ_MAC_TX;
49 break;
50
51 case CH_UART1_RX:
52 ret_irq = IRQ_UART1_RX;
53 break;
54
55 case CH_UART1_TX:
56 ret_irq = IRQ_UART1_TX;
57 break;
58
59 case CH_SPORT0_RX:
60 ret_irq = IRQ_SPORT0_RX;
61 break;
62
63 case CH_SPORT0_TX:
64 ret_irq = IRQ_SPORT0_TX;
65 break;
66
67 case CH_SPORT1_RX:
68 ret_irq = IRQ_SPORT1_RX;
69 break;
70
71 case CH_SPORT1_TX:
72 ret_irq = IRQ_SPORT1_TX;
73 break;
74
75 case CH_SPI0:
76 ret_irq = IRQ_SPI0;
77 break;
78
79 case CH_UART0_RX:
80 ret_irq = IRQ_UART0_RX;
81 break;
82
83 case CH_UART0_TX:
84 ret_irq = IRQ_UART0_TX;
85 break;
86
87 case CH_MEM_STREAM0_SRC:
88 case CH_MEM_STREAM0_DEST:
89 ret_irq = IRQ_MEM_DMA0;
90 break;
91
92 case CH_MEM_STREAM1_SRC:
93 case CH_MEM_STREAM1_DEST:
94 ret_irq = IRQ_MEM_DMA1;
95 break;
96 }
97 return ret_irq;
98 }
99