1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_PCI_H 3 #define __ASM_PCI_H 4 #ifdef __KERNEL__ 5 6 #include <linux/types.h> 7 #include <linux/slab.h> 8 #include <linux/dma-mapping.h> 9 10 #include <asm/io.h> 11 12 #define PCIBIOS_MIN_IO 0x1000 13 #define PCIBIOS_MIN_MEM 0 14 15 /* 16 * Set to 1 if the kernel should re-assign all PCI bus numbers 17 */ 18 #define pcibios_assign_all_busses() \ 19 (pci_has_flag(PCI_REASSIGN_ALL_BUS)) 20 21 /* 22 * PCI address space differs from physical memory address space 23 */ 24 #define PCI_DMA_BUS_IS_PHYS (0) 25 26 #define ARCH_GENERIC_PCI_MMAP_RESOURCE 1 27 28 extern int isa_dma_bridge_buggy; 29 30 #ifdef CONFIG_PCI 31 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) 32 { 33 /* no legacy IRQ on arm64 */ 34 return -ENODEV; 35 } 36 37 static inline int pci_proc_domain(struct pci_bus *bus) 38 { 39 return 1; 40 } 41 #endif /* CONFIG_PCI */ 42 43 #endif /* __KERNEL__ */ 44 #endif /* __ASM_PCI_H */ 45