diff options
Diffstat (limited to 'arch/powerpc/include/asm/io-workarounds.h')
| -rw-r--r-- | arch/powerpc/include/asm/io-workarounds.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/io-workarounds.h b/arch/powerpc/include/asm/io-workarounds.h new file mode 100644 index 000000000..3cce499fb --- /dev/null +++ b/arch/powerpc/include/asm/io-workarounds.h @@ -0,0 +1,55 @@ +/* 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 */ |