1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2016 SiFive
4  */
5 
6 #ifndef _ASM_RISCV_PCI_H
7 #define _ASM_RISCV_PCI_H
8 
9 #include <linux/types.h>
10 #include <linux/slab.h>
11 #include <linux/dma-mapping.h>
12 
13 #include <asm/io.h>
14 
15 #define PCIBIOS_MIN_IO		0
16 #define PCIBIOS_MIN_MEM		0
17 
18 /* RISC-V shim does not initialize PCI bus */
19 #define pcibios_assign_all_busses() 1
20 
21 extern int isa_dma_bridge_buggy;
22 
23 #ifdef CONFIG_PCI
pci_get_legacy_ide_irq(struct pci_dev * dev,int channel)24 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
25 {
26 	/* no legacy IRQ on risc-v */
27 	return -ENODEV;
28 }
29 
pci_proc_domain(struct pci_bus * bus)30 static inline int pci_proc_domain(struct pci_bus *bus)
31 {
32 	/* always show the domain in /proc */
33 	return 1;
34 }
35 #endif  /* CONFIG_PCI */
36 
37 #endif  /* _ASM_RISCV_PCI_H */
38