io-workarounds.h (1313B)
1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Support PCI IO workaround 4 * 5 * (C) Copyright 2007-2008 TOSHIBA CORPORATION 6 */ 7 8#ifndef _IO_WORKAROUNDS_H 9#define _IO_WORKAROUNDS_H 10 11#ifdef CONFIG_PPC_IO_WORKAROUNDS 12#include <linux/io.h> 13#include <asm/pci-bridge.h> 14 15/* Bus info */ 16struct iowa_bus { 17 struct pci_controller *phb; 18 struct ppc_pci_io *ops; 19 void *private; 20}; 21 22void iowa_register_bus(struct pci_controller *, struct ppc_pci_io *, 23 int (*)(struct iowa_bus *, void *), void *); 24struct iowa_bus *iowa_mem_find_bus(const PCI_IO_ADDR); 25struct iowa_bus *iowa_pio_find_bus(unsigned long); 26 27extern struct ppc_pci_io spiderpci_ops; 28extern int spiderpci_iowa_init(struct iowa_bus *, void *); 29 30#define SPIDER_PCI_REG_BASE 0xd000 31#define SPIDER_PCI_REG_SIZE 0x1000 32#define SPIDER_PCI_VCI_CNTL_STAT 0x0110 33#define SPIDER_PCI_DUMMY_READ 0x0810 34#define SPIDER_PCI_DUMMY_READ_BASE 0x0814 35 36#endif 37 38#if defined(CONFIG_PPC_IO_WORKAROUNDS) && defined(CONFIG_PPC_INDIRECT_MMIO) 39extern bool io_workaround_inited; 40 41static inline bool iowa_is_active(void) 42{ 43 return unlikely(io_workaround_inited); 44} 45#else 46static inline bool iowa_is_active(void) 47{ 48 return false; 49} 50#endif 51 52void __iomem *iowa_ioremap(phys_addr_t addr, unsigned long size, 53 pgprot_t prot, void *caller); 54 55#endif /* _IO_WORKAROUNDS_H */