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Linux kernel mirror (for testing)
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linux
1menu "DMA support"
2
3
4config SH_DMA
5 bool "SuperH on-chip DMA controller (DMAC) support"
6 depends on CPU_SH3 || CPU_SH4
7 default n
8
9config SH_DMA_IRQ_MULTI
10 bool
11 depends on SH_DMA
12 default y if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \
13 CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || \
14 CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091 || \
15 CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7780 || \
16 CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7760
17
18config SH_DMA_API
19 depends on SH_DMA
20 bool "SuperH DMA API support"
21 default n
22 help
23 SH_DMA_API always enabled DMA API of used SuperH.
24 If you want to use DMA ENGINE, you must not enable this.
25 Please enable DMA_ENGINE and SH_DMAE.
26
27config NR_ONCHIP_DMA_CHANNELS
28 int
29 depends on SH_DMA
30 default "4" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \
31 CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091
32 default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \
33 CPU_SUBTYPE_SH7760
34 default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780 || \
35 CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7724
36 default "6"
37 help
38 This allows you to specify the number of channels that the on-chip
39 DMAC supports. This will be 4 for SH7750/SH7751/Sh7750S/SH7091 and 8 for the
40 SH7750R/SH7751R/SH7760, 12 for the SH7723/SH7780/SH7785/SH7724, default is 6.
41
42config SH_DMABRG
43 bool "SH7760 DMABRG support"
44 depends on CPU_SUBTYPE_SH7760
45 help
46 The DMABRG does data transfers from main memory to Audio/USB units
47 of the SH7760.
48 Say Y if you want to use Audio/USB DMA on your SH7760 board.
49
50config PVR2_DMA
51 tristate "PowerVR 2 DMAC support"
52 depends on SH_DREAMCAST && SH_DMA
53 help
54 Selecting this will enable support for the PVR2 DMA controller.
55 As this chains off of the on-chip DMAC, that must also be
56 enabled by default.
57
58 This is primarily used by the pvr2fb framebuffer driver for
59 certain optimizations, but is not necessary for functionality.
60
61 If in doubt, say N.
62
63config G2_DMA
64 tristate "G2 Bus DMA support"
65 depends on SH_DREAMCAST
66 select SH_DMA_API
67 help
68 This enables support for the DMA controller for the Dreamcast's
69 G2 bus. Drivers that want this will generally enable this on
70 their own.
71
72 If in doubt, say N.
73
74endmenu