acpi/arm64/dma.c

1 // SPDX-License-Identifier: GPL-2.0-only
5 #include <linux/dma-direct.h>
14 	 * If @dev is expected to be DMA-capable then the bus code that created  in acpi_arch_dma_setup()
15 	 * it should have initialised its dma_mask pointer by this point. For  in acpi_arch_dma_setup()
19 	if (!dev->dma_mask) {  in acpi_arch_dma_setup()
21 		dev->dma_mask = &dev->coherent_dma_mask;  in acpi_arch_dma_setup()
24 	if (dev->coherent_dma_mask)  in acpi_arch_dma_setup()
25 		end = dev->coherent_dma_mask;  in acpi_arch_dma_setup()
27 		end = (1ULL << 32) - 1;  in acpi_arch_dma_setup()
32 		dev->dma_range_map = map;  in acpi_arch_dma_setup()
35 	if (ret == -ENODEV)  in acpi_arch_dma_setup()
40 		 * firmware.  in acpi_arch_dma_setup()
43 		dev->bus_dma_limit = end;  in acpi_arch_dma_setup()
44 		dev->coherent_dma_mask = min(dev->coherent_dma_mask, mask);  in acpi_arch_dma_setup()
45 		*dev->dma_mask = min(*dev->dma_mask, mask);  in acpi_arch_dma_setup()