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59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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* sbus.h: Defines for the Sun SBus.
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*
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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*/
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#ifndef _SPARC_SBUS_H
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#define _SPARC_SBUS_H
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#include <linux/dma-mapping.h>
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#include <linux/ioport.h>
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#include <linux/of_device.h>
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#include <asm/oplib.h>
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#include <asm/prom.h>
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#include <asm/scatterlist.h>
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/* We scan which devices are on the SBus using the PROM node device
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* tree. SBus devices are described in two different ways. You can
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* either get an absolute address at which to access the device, or
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* you can get a SBus 'slot' number and an offset within that slot.
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*/
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struct sbus_bus;
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/* Linux SBUS device tables */
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struct sbus_dev {
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struct of_device ofdev;
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struct sbus_bus *bus;
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struct sbus_dev *next;
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struct sbus_dev *child;
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struct sbus_dev *parent;
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};
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#define to_sbus_device(d) container_of(d, struct sbus_dev, ofdev.dev)
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/* This struct describes the SBus(s) found on this machine. */
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struct sbus_bus {
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struct of_device ofdev;
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struct sbus_dev *devices; /* Link to devices on this SBus */
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struct sbus_bus *next; /* next SBus, if more than one SBus */
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};
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#define to_sbus(d) container_of(d, struct sbus_bus, ofdev.dev)
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static inline int
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sbus_is_slave(struct sbus_dev *dev)
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{
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/* XXX Have to write this for sun4c's */
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return 0;
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}
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/* These yield IOMMU mappings in consistent mode. */
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void prom_adjust_ranges(struct linux_prom_ranges *, int,
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struct linux_prom_ranges *, int);
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extern void sbus_setup_iommu(struct sbus_bus *, struct device_node *);
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extern int sbus_arch_preinit(void);
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extern void sbus_arch_postinit(void);
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#endif /* !(_SPARC_SBUS_H) */
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