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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2016 SiFive
*/
#ifndef _ASM_RISCV_PCI_H
#define _ASM_RISCV_PCI_H
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/dma-mapping.h>
#include <asm/io.h>
#define PCIBIOS_MIN_IO 0
#define PCIBIOS_MIN_MEM 0
/* RISC-V shim does not initialize PCI bus */
#define pcibios_assign_all_busses() 1
#define ARCH_GENERIC_PCI_MMAP_RESOURCE 1
extern int isa_dma_bridge_buggy;
#ifdef CONFIG_PCI
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
/* no legacy IRQ on risc-v */
return -ENODEV;
}
static inline int pci_proc_domain(struct pci_bus *bus)
{
/* always show the domain in /proc */
return 1;
}
#ifdef CONFIG_NUMA
static inline int pcibus_to_node(struct pci_bus *bus)
{
return dev_to_node(&bus->dev);
}
#ifndef cpumask_of_pcibus
#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
cpu_all_mask : \
cpumask_of_node(pcibus_to_node(bus)))
#endif
#endif /* CONFIG_NUMA */
#endif /* CONFIG_PCI */
#endif /* _ASM_RISCV_PCI_H */