mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-17 09:43:59 +08:00
eb29d8d2aa
Virtio drivers should map the part of the BAR they need, not necessarily all of it. Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/* Generic I/O port emulation, based on MN10300 code
|
|
*
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
#ifndef __ASM_GENERIC_PCI_IOMAP_H
|
|
#define __ASM_GENERIC_PCI_IOMAP_H
|
|
|
|
struct pci_dev;
|
|
#ifdef CONFIG_PCI
|
|
/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
|
|
extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
|
|
extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
|
|
unsigned long offset,
|
|
unsigned long maxlen);
|
|
/* Create a virtual mapping cookie for a port on a given PCI device.
|
|
* Do not call this directly, it exists to make it easier for architectures
|
|
* to override */
|
|
#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
|
|
extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
|
|
unsigned int nr);
|
|
#else
|
|
#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
|
|
#endif
|
|
|
|
#elif defined(CONFIG_GENERIC_PCI_IOMAP)
|
|
static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
|
|
unsigned long offset,
|
|
unsigned long maxlen)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
#endif /* __ASM_GENERIC_IO_H */
|