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Re: [Qemu-devel] Re: PATCH, RFC: Generic DMA framework

From: Fabrice Bellard
Subject: Re: [Qemu-devel] Re: PATCH, RFC: Generic DMA framework
Date: Sat, 25 Aug 2007 01:33:38 +0200
User-agent: Thunderbird (X11/20070212)

Paul Brook wrote:
On Friday 24 August 2007, Blue Swirl wrote:
I have now converted the ISA DMA devices (SB16, FDC), most PCI devices
and targets.

gdma.diff: Generic DMA
pc_ppc_dma_to_gdma.diff: Convert x86 and PPC to GDMA
pc_sb16_to_gdma.diff: Convert SB16 to GDMA
pc_fdc_to_gdma.diff: FDC
pc_dma_cleanup.diff: Remove unused functions
sparc_gdma.diff: Convert Sparc32 to GDMA
sparc32_dma_esp_le_to_gdma.diff: Convert ESP and Lance
sun4c.diff: Preliminary Sun4c (Sparcstation-1) support
pci_gdma.diff: Convert PCI devices and targets

Any comments? The patches are a bit intrusive and I can't test the
targets except that they compile.

Shouldn't the PCI DMA object be a property of the PCI bus?
ie. we don't want/need to pass it round as a separate parameter. It can be inferred form the device/bus.

I agree. Moreover the DMA is bus specific so I don't see a need to add a generic DMA layer.



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