/* 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 */