dbbdee9473
Microblaze and PowerPC share a large chunk of code for translating OF device tree data into usable addresses. Differences between the two consist of cosmetic differences, and the addition of dma-ranges support code to powerpc but not microblaze. This patch moves the powerpc version into common code and applies many of the cosmetic (non-functional) changes from the microblaze version. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Michal Simek <monstr@monstr.eu> CC: Wolfram Sang <w.sang@pengutronix.de> CC: Stephen Rothwell <sfr@canb.auug.org.au>
122 lines
3.6 KiB
C
122 lines
3.6 KiB
C
#include <linux/of.h> /* linux/of.h gets to determine #include ordering */
|
|
#ifndef _POWERPC_PROM_H
|
|
#define _POWERPC_PROM_H
|
|
#ifdef __KERNEL__
|
|
|
|
/*
|
|
* Definitions for talking to the Open Firmware PROM on
|
|
* Power Macintosh computers.
|
|
*
|
|
* Copyright (C) 1996-2005 Paul Mackerras.
|
|
*
|
|
* Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/of_fdt.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/platform_device.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/atomic.h>
|
|
|
|
#define HAVE_ARCH_DEVTREE_FIXUPS
|
|
|
|
#ifdef CONFIG_PPC32
|
|
/*
|
|
* PCI <-> OF matching functions
|
|
* (XXX should these be here?)
|
|
*/
|
|
struct pci_bus;
|
|
struct pci_dev;
|
|
extern int pci_device_from_OF_node(struct device_node *node,
|
|
u8* bus, u8* devfn);
|
|
extern struct device_node* pci_busdev_to_OF_node(struct pci_bus *, int);
|
|
extern struct device_node* pci_device_to_OF_node(struct pci_dev *);
|
|
extern void pci_create_OF_bus_map(void);
|
|
#endif
|
|
|
|
/*
|
|
* OF address retreival & translation
|
|
*/
|
|
|
|
/* Translate a DMA address from device space to CPU space */
|
|
extern u64 of_translate_dma_address(struct device_node *dev,
|
|
const u32 *in_addr);
|
|
|
|
/* Extract an address from a device, returns the region size and
|
|
* the address space flags too. The PCI version uses a BAR number
|
|
* instead of an absolute index
|
|
*/
|
|
extern const u32 *of_get_address(struct device_node *dev, int index,
|
|
u64 *size, unsigned int *flags);
|
|
#ifdef CONFIG_PCI
|
|
extern const u32 *of_get_pci_address(struct device_node *dev, int bar_no,
|
|
u64 *size, unsigned int *flags);
|
|
#else
|
|
static inline const u32 *of_get_pci_address(struct device_node *dev,
|
|
int bar_no, u64 *size, unsigned int *flags)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif /* CONFIG_PCI */
|
|
|
|
#ifdef CONFIG_PCI
|
|
extern int of_pci_address_to_resource(struct device_node *dev, int bar,
|
|
struct resource *r);
|
|
#else
|
|
static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
|
|
struct resource *r)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
#endif /* CONFIG_PCI */
|
|
|
|
#ifdef CONFIG_PCI
|
|
extern unsigned long pci_address_to_pio(phys_addr_t address);
|
|
#else
|
|
static inline unsigned long pci_address_to_pio(phys_addr_t address)
|
|
{
|
|
return (unsigned long)-1;
|
|
}
|
|
#endif /* CONFIG_PCI */
|
|
|
|
/* Parse the ibm,dma-window property of an OF node into the busno, phys and
|
|
* size parameters.
|
|
*/
|
|
void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
|
|
unsigned long *busno, unsigned long *phys, unsigned long *size);
|
|
|
|
extern void kdump_move_device_tree(void);
|
|
|
|
/* CPU OF node matching */
|
|
struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
|
|
|
|
/* cache lookup */
|
|
struct device_node *of_find_next_cache_node(struct device_node *np);
|
|
|
|
/* Get the MAC address */
|
|
extern const void *of_get_mac_address(struct device_node *np);
|
|
|
|
/**
|
|
* of_irq_map_pci - Resolve the interrupt for a PCI device
|
|
* @pdev: the device whose interrupt is to be resolved
|
|
* @out_irq: structure of_irq filled by this function
|
|
*
|
|
* This function resolves the PCI interrupt for a given PCI device. If a
|
|
* device-node exists for a given pci_dev, it will use normal OF tree
|
|
* walking. If not, it will implement standard swizzling and walk up the
|
|
* PCI tree until an device-node is found, at which point it will finish
|
|
* resolving using the OF tree walking.
|
|
*/
|
|
struct pci_dev;
|
|
extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _POWERPC_PROM_H */
|