162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Support PCI IO workaround 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * (C) Copyright 2007-2008 TOSHIBA CORPORATION 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#ifndef _IO_WORKAROUNDS_H 962306a36Sopenharmony_ci#define _IO_WORKAROUNDS_H 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#ifdef CONFIG_PPC_IO_WORKAROUNDS 1262306a36Sopenharmony_ci#include <linux/io.h> 1362306a36Sopenharmony_ci#include <asm/pci-bridge.h> 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci/* Bus info */ 1662306a36Sopenharmony_cistruct iowa_bus { 1762306a36Sopenharmony_ci struct pci_controller *phb; 1862306a36Sopenharmony_ci struct ppc_pci_io *ops; 1962306a36Sopenharmony_ci void *private; 2062306a36Sopenharmony_ci}; 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_civoid iowa_register_bus(struct pci_controller *, struct ppc_pci_io *, 2362306a36Sopenharmony_ci int (*)(struct iowa_bus *, void *), void *); 2462306a36Sopenharmony_cistruct iowa_bus *iowa_mem_find_bus(const PCI_IO_ADDR); 2562306a36Sopenharmony_cistruct iowa_bus *iowa_pio_find_bus(unsigned long); 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ciextern struct ppc_pci_io spiderpci_ops; 2862306a36Sopenharmony_ciextern int spiderpci_iowa_init(struct iowa_bus *, void *); 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci#define SPIDER_PCI_REG_BASE 0xd000 3162306a36Sopenharmony_ci#define SPIDER_PCI_REG_SIZE 0x1000 3262306a36Sopenharmony_ci#define SPIDER_PCI_VCI_CNTL_STAT 0x0110 3362306a36Sopenharmony_ci#define SPIDER_PCI_DUMMY_READ 0x0810 3462306a36Sopenharmony_ci#define SPIDER_PCI_DUMMY_READ_BASE 0x0814 3562306a36Sopenharmony_ci 3662306a36Sopenharmony_ci#endif 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ci#if defined(CONFIG_PPC_IO_WORKAROUNDS) && defined(CONFIG_PPC_INDIRECT_MMIO) 3962306a36Sopenharmony_ciextern bool io_workaround_inited; 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_cistatic inline bool iowa_is_active(void) 4262306a36Sopenharmony_ci{ 4362306a36Sopenharmony_ci return unlikely(io_workaround_inited); 4462306a36Sopenharmony_ci} 4562306a36Sopenharmony_ci#else 4662306a36Sopenharmony_cistatic inline bool iowa_is_active(void) 4762306a36Sopenharmony_ci{ 4862306a36Sopenharmony_ci return false; 4962306a36Sopenharmony_ci} 5062306a36Sopenharmony_ci#endif 5162306a36Sopenharmony_ci 5262306a36Sopenharmony_civoid __iomem *iowa_ioremap(phys_addr_t addr, unsigned long size, 5362306a36Sopenharmony_ci pgprot_t prot, void *caller); 5462306a36Sopenharmony_ci 5562306a36Sopenharmony_ci#endif /* _IO_WORKAROUNDS_H */ 56