linux/arch/frv/mb93090-mb00/pci-frv.h
Myron Stowe 96c5590058 PCI: Pull PCI 'latency timer' setup up into the core
The 'latency timer' of PCI devices, both Type 0 and Type 1,
is setup in architecture-specific code [see: 'pcibios_set_master()'].
There are two approaches being taken by all the architectures - check
if the 'latency timer' is currently set between 16 and 255 and if not
bring it within bounds, or, do nothing (and then there is the
gratuitously different PA-RISC implementation).

There is nothing architecture-specific about PCI's 'latency timer' so
this patch pulls its setup functionality up into the PCI core by
creating a generic 'pcibios_set_master()' function using the '__weak'
attribute which can be used by all architectures as a default which,
if necessary, can then be over-ridden by architecture-specific code.

No functional change.

Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2012-01-06 12:10:42 -08:00

43 lines
860 B
C

/*
* Low-Level PCI Access for FRV machines.
*
* (c) 1999 Martin Mares <mj@ucw.cz>
*/
#include <asm/sections.h>
#undef DEBUG
#ifdef DEBUG
#define DBG(x...) printk(x)
#else
#define DBG(x...)
#endif
#define PCI_PROBE_BIOS 0x0001
#define PCI_PROBE_CONF1 0x0002
#define PCI_PROBE_CONF2 0x0004
#define PCI_NO_CHECKS 0x0400
#define PCI_ASSIGN_ROMS 0x1000
#define PCI_BIOS_IRQ_SCAN 0x2000
#define PCI_ASSIGN_ALL_BUSSES 0x4000
extern unsigned int __nongpreldata pci_probe;
/* pci-frv.c */
void pcibios_resource_survey(void);
/* pci-vdk.c */
extern int __nongpreldata pcibios_last_bus;
extern struct pci_bus *__nongpreldata pci_root_bus;
extern struct pci_ops *__nongpreldata pci_root_ops;
/* pci-irq.c */
extern unsigned int pcibios_irq_mask;
void pcibios_irq_init(void);
void pcibios_fixup_irqs(void);
void pcibios_enable_irq(struct pci_dev *dev);