This series adds support for the PCIe controller found on Apple M1 and M2 machines and enables support for PCIe XHCI controllers. This makes the type-A USB ports on the M1 Mac mini work. Since the use of Apples DART IOMMU is mandatory (these PCIe DARTs don't support bypass mode), this adds DMA mapping operations to the IOMMU uclass and implements them for the Apple DART. It modifies the XHCI driver code to go map DMA buffers through the IOMMU if there is one. Since the M1 Mac mini now has two types of XHCI controllers with different number of ports (2 for the DWC3 controllers, 8 for the Fresco Logic PCIe controller) this uncovered an issue in with the way the hub descriptor is implemented in the XHCI driver.
ChangeLog:
v2: - Add test for new operations and PCI IOMMU mapping
Mark Kettenis (9): iommu: Add DMA mapping operations test: Add test for IOMMU uclass map/unmap ops iommu: apple: Implement DMA mapping operations for Apple DART usb: xhci: Implement DMA mapping iommu: Implement mapping IOMMUs for PCI devices test: Add test for mapping IOMMUs for PCI devices pci: Add Apple PCIe controller driver arm: apple: Enable PCIe USB controller usb: xhci: Fix root hub descriptor
MAINTAINERS | 1 + arch/arm/Kconfig | 2 + arch/sandbox/dts/test.dts | 2 + configs/apple_m1_defconfig | 1 + drivers/iommu/apple_dart.c | 311 +++++++++++++++++++++++++---- drivers/iommu/iommu-uclass.c | 93 +++++++++ drivers/iommu/sandbox_iommu.c | 58 ++++++ drivers/pci/Kconfig | 9 + drivers/pci/Makefile | 1 + drivers/pci/pcie_apple.c | 354 ++++++++++++++++++++++++++++++++++ drivers/usb/host/xhci-mem.c | 84 +++++--- drivers/usb/host/xhci-ring.c | 76 +++++--- drivers/usb/host/xhci.c | 25 +-- include/dm/device.h | 3 + include/iommu.h | 24 +++ include/usb/xhci.h | 28 ++- test/dm/iommu.c | 74 ++++++- 17 files changed, 1037 insertions(+), 109 deletions(-) create mode 100644 drivers/pci/pcie_apple.c