[Qemu-devel] [PATCH] MIPS: DMA support for RC4030 chipset [v2]

[Qemu-devel] [PATCH] MIPS: DMA support for RC4030 chipset [v2]

[Hervé Poussineau]

[-- Attachment #1: Type: text/plain, Size: 493 bytes --]

Hi,

Attached patch implements DMA support to RC4030 chipset and simplifies 
jazz  IO part (at 0xf0000000), where registers contain 16 bit values.
The patch also wires DMA transfers for the SCSI adapter in the Jazz 
emulation (Mips Magnum 4000 and Acer Pica 61).

Blue Swirl's comments have been taken into account in this version:

Changes since v1:
- Support reuse of esp callback functions up to DMA engine
- Don't keep in memory the DMA table, but read it when needed

Hervé

[-- Attachment #2: rc4030_dma_v2.diff --]
[-- Type: plain/text, Size: 17180 bytes --]

Re: [Qemu-devel] [PATCH] MIPS: DMA support for RC4030 chipset [v2]

[Hervé Poussineau]

Forget that, DMA transfer function can be called in aio path, and 
cpu_single_env will be NULL in that case

Hervé

Hervé Poussineau a écrit :
> Hi,
> 
> Attached patch implements DMA support to RC4030 chipset and simplifies 
> jazz  IO part (at 0xf0000000), where registers contain 16 bit values.
> The patch also wires DMA transfers for the SCSI adapter in the Jazz 
> emulation (Mips Magnum 4000 and Acer Pica 61).
> 
> Blue Swirl's comments have been taken into account in this version:
> 
> Changes since v1:
> - Support reuse of esp callback functions up to DMA engine
> - Don't keep in memory the DMA table, but read it when needed
> 
> Hervé