mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
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
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/* 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 */
|