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