ipfs_readl
val = ipfs_readl(xudc, XUSB_DEV_CONFIGURATION_0);
val = ipfs_readl(xudc, XUSB_DEV_INTR_MASK_0);
ctx->ipfs[i] = ipfs_readl(tegra, soc->ipfs.offsets[i]);
value = ipfs_readl(tegra, IPFS_XUSB_HOST_CONFIGURATION_0);
value = ipfs_readl(tegra, IPFS_XUSB_HOST_INTR_MASK_0);