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14b4d97669
ppc_md.ioremap() is only used for I/O workaround on CELL platform, so indirect function call can be avoided. This patch reworks the io-workaround and ioremap() functions to use the global 'io_workaround_inited' flag for the activation of io-workaround. When CONFIG_PPC_IO_WORKAROUNDS or CONFIG_PPC_INDIRECT_MMIO are not selected, the I/O workaround ioremap() voids and the global flag is not used. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/5fa3ef069fbd0f152512afaae19e7a60161454cf.1566309262.git.christophe.leroy@c-s.fr
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/* 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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