csky: Add PCI support

	select TIMER_OF

	select USB_ARCH_HAS_EHCI

	select USB_ARCH_HAS_OHCI

	select GENERIC_PCI_IOMAP

	select HAVE_PCI

	select PCI_DOMAINS_GENERIC if PCI

	select PCI_SYSCALL if PCI

	select PCI_MSI if PCI

config CPU_HAS_CACHEV2

	bool

generic-y += mm-arch-hooks.h

generic-y += mmiowb.h

generic-y += module.h

generic-y += pci.h

generic-y += percpu.h

generic-y += preempt.h

generic-y += qrwlock.h

/* SPDX-License-Identifier: GPL-2.0-only */

#ifndef __ASM_CSKY_PCI_H

#define __ASM_CSKY_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

/* C-SKY shim does not initialize PCI bus */

#define pcibios_assign_all_busses() 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 csky */

	return -ENODEV;

}

static inline int pci_proc_domain(struct pci_bus *bus)

{

	/* always show the domain in /proc */

	return 1;

}

#endif  /* CONFIG_PCI */

#endif  /* __ASM_CSKY_PCI_H */