1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2016 SiFive 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef _ASM_RISCV_PCI_H 7*4882a593Smuzhiyun #define _ASM_RISCV_PCI_H 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/types.h> 10*4882a593Smuzhiyun #include <linux/slab.h> 11*4882a593Smuzhiyun #include <linux/dma-mapping.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <asm/io.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define PCIBIOS_MIN_IO 0 16*4882a593Smuzhiyun #define PCIBIOS_MIN_MEM 0 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun /* RISC-V shim does not initialize PCI bus */ 19*4882a593Smuzhiyun #define pcibios_assign_all_busses() 1 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun extern int isa_dma_bridge_buggy; 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #ifdef CONFIG_PCI pci_get_legacy_ide_irq(struct pci_dev * dev,int channel)24*4882a593Smuzhiyunstatic inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) 25*4882a593Smuzhiyun { 26*4882a593Smuzhiyun /* no legacy IRQ on risc-v */ 27*4882a593Smuzhiyun return -ENODEV; 28*4882a593Smuzhiyun } 29*4882a593Smuzhiyun pci_proc_domain(struct pci_bus * bus)30*4882a593Smuzhiyunstatic inline int pci_proc_domain(struct pci_bus *bus) 31*4882a593Smuzhiyun { 32*4882a593Smuzhiyun /* always show the domain in /proc */ 33*4882a593Smuzhiyun return 1; 34*4882a593Smuzhiyun } 35*4882a593Smuzhiyun #endif /* CONFIG_PCI */ 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun #endif /* _ASM_RISCV_PCI_H */ 38