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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Support PCI IO workaround
*
* (C) Copyright 2007-2008 TOSHIBA CORPORATION
*/
#ifndef _IO_WORKAROUNDS_H
#define _IO_WORKAROUNDS_H
#ifdef CONFIG_PPC_IO_WORKAROUNDS
#include <linux/io.h>
#include <asm/pci-bridge.h>
/* Bus info */
struct iowa_bus {
struct pci_controller *phb;
struct ppc_pci_io *ops;
void *private;
};
void iowa_register_bus(struct pci_controller *, struct ppc_pci_io *,
int (*)(struct iowa_bus *, void *), void *);
struct iowa_bus *iowa_mem_find_bus(const PCI_IO_ADDR);
struct iowa_bus *iowa_pio_find_bus(unsigned long);
extern struct ppc_pci_io spiderpci_ops;
extern int spiderpci_iowa_init(struct iowa_bus *, void *);
#define SPIDER_PCI_REG_BASE 0xd000
#define SPIDER_PCI_REG_SIZE 0x1000
#define SPIDER_PCI_VCI_CNTL_STAT 0x0110
#define SPIDER_PCI_DUMMY_READ 0x0810
#define SPIDER_PCI_DUMMY_READ_BASE 0x0814
#endif
#if defined(CONFIG_PPC_IO_WORKAROUNDS) && defined(CONFIG_PPC_INDIRECT_MMIO)
extern bool io_workaround_inited;
static inline bool iowa_is_active(void)
{
return unlikely(io_workaround_inited);
}
#else
static inline bool iowa_is_active(void)
{
return false;
}
#endif
void __iomem *iowa_ioremap(phys_addr_t addr, unsigned long size,
pgprot_t prot, void *caller);
#endif /* _IO_WORKAROUNDS_H */
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