ssb: fix DMA translation for some specific boards (04023afc) · Commits · 戴 / test

drivers/ssb/main.c

+21 −3

Original line number	Diff line number	Diff line
		@@ -1260,16 +1260,34 @@ void ssb_device_disable(struct ssb_device *dev, u32 core_specific_flags)
		}
		EXPORT_SYMBOL(ssb_device_disable);

		/* Some chipsets need routing known for PCIe and 64-bit DMA */
		static bool ssb_dma_translation_special_bit(struct ssb_device *dev)
		{
		u16 chip_id = dev->bus->chip_id;

		if (dev->id.coreid == SSB_DEV_80211) {
		return (chip_id == 0x4322 \|\| chip_id == 43221 \|\|
		chip_id == 43231 \|\| chip_id == 43222);
		}

		return 0;
		}

		u32 ssb_dma_translation(struct ssb_device *dev)
		{
		switch (dev->bus->bustype) {
		case SSB_BUSTYPE_SSB:
		return 0;
		case SSB_BUSTYPE_PCI:
		if (ssb_read32(dev, SSB_TMSHIGH) & SSB_TMSHIGH_DMA64)
		if (pci_is_pcie(dev->bus->host_pci) &&
		ssb_read32(dev, SSB_TMSHIGH) & SSB_TMSHIGH_DMA64) {
		return SSB_PCIE_DMA_H32;
		} else {
		if (ssb_dma_translation_special_bit(dev))
		return SSB_PCIE_DMA_H32;
		else
		return SSB_PCI_DMA;
		}
		default:
		__ssb_dma_not_implemented(dev);
		}