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2b923ed1bd
In current implementation, the DMA32 segments required by one specific PE isn't calculated with the information hold in the PE independently. It conflicts with the PCI hotplug design: PE centralized, meaning the PE's DMA32 segments should be calculated from the information hold in the PE independently. This introduces an array (@dma32_segmap) for every PHB to track the DMA32 segmeng usage. Besides, this moves the logic calculating PE's consumed DMA32 segments to pnv_pci_ioda1_setup_dma_pe() so that PE's DMA32 segments are calculated/allocated from the information hold in the PE (DMA32 weight). Also the logic is improved: we try to allocate as much DMA32 segments as we can. It's acceptable that number of DMA32 segments less than the expected number are allocated. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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