+ port0 = ap->host->ports[0]->private_data;
+ port1 = ap->host->ports[1]->private_data;
+ sdev0 = ap->host->ports[0]->link.device[0].sdev;
+ sdev1 = ap->host->ports[1]->link.device[0].sdev;
+ if ((port0->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
+ (port1->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)) {
+ /** We have to set the DMA mask to 32-bit if either port is in
+ ATAPI mode, since they are on the same PCI device which is
+ used for DMA mapping. If we set the mask we also need to set
+ the bounce limit on both ports to ensure that the block
+ layer doesn't feed addresses that cause DMA mapping to
+ choke. If either SCSI device is not allocated yet, it's OK
+ since that port will discover its correct setting when it
+ does get allocated.
+ Note: Setting 32-bit mask should not fail. */
+ if (sdev0)
+ blk_queue_bounce_limit(sdev0->request_queue,
+ ATA_DMA_MASK);
+ if (sdev1)
+ blk_queue_bounce_limit(sdev1->request_queue,
+ ATA_DMA_MASK);
+
+ pci_set_dma_mask(pdev, ATA_DMA_MASK);
+ } else {
+ /** This shouldn't fail as it was set to this value before */
+ pci_set_dma_mask(pdev, pp->adma_dma_mask);
+ if (sdev0)
+ blk_queue_bounce_limit(sdev0->request_queue,
+ pp->adma_dma_mask);
+ if (sdev1)
+ blk_queue_bounce_limit(sdev1->request_queue,
+ pp->adma_dma_mask);
+ }
+