1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
123 lines
4.1 KiB
C
123 lines
4.1 KiB
C
/* $Id: sbus.h,v 1.14 2000/02/18 13:50:55 davem Exp $
|
|
* sbus.h: Defines for the Sun SBus.
|
|
*
|
|
* Copyright (C) 1996, 1999 David S. Miller (davem@redhat.com)
|
|
*/
|
|
|
|
#ifndef _SPARC64_SBUS_H
|
|
#define _SPARC64_SBUS_H
|
|
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/ioport.h>
|
|
|
|
#include <asm/oplib.h>
|
|
#include <asm/iommu.h>
|
|
#include <asm/scatterlist.h>
|
|
|
|
/* We scan which devices are on the SBus using the PROM node device
|
|
* tree. SBus devices are described in two different ways. You can
|
|
* either get an absolute address at which to access the device, or
|
|
* you can get a SBus 'slot' number and an offset within that slot.
|
|
*/
|
|
|
|
/* The base address at which to calculate device OBIO addresses. */
|
|
#define SUN_SBUS_BVADDR 0x00000000
|
|
#define SBUS_OFF_MASK 0x0fffffff
|
|
|
|
/* These routines are used to calculate device address from slot
|
|
* numbers + offsets, and vice versa.
|
|
*/
|
|
|
|
static __inline__ unsigned long sbus_devaddr(int slotnum, unsigned long offset)
|
|
{
|
|
return (unsigned long) (SUN_SBUS_BVADDR+((slotnum)<<28)+(offset));
|
|
}
|
|
|
|
static __inline__ int sbus_dev_slot(unsigned long dev_addr)
|
|
{
|
|
return (int) (((dev_addr)-SUN_SBUS_BVADDR)>>28);
|
|
}
|
|
|
|
struct sbus_bus;
|
|
|
|
/* Linux SBUS device tables */
|
|
struct sbus_dev {
|
|
struct sbus_bus *bus; /* Our toplevel parent SBUS */
|
|
struct sbus_dev *next; /* Chain of siblings */
|
|
struct sbus_dev *child; /* Chain of children */
|
|
struct sbus_dev *parent;/* Parent device if not toplevel*/
|
|
int prom_node; /* OBP node of this device */
|
|
char prom_name[64]; /* OBP device name property */
|
|
int slot; /* SBUS slot number */
|
|
|
|
struct resource resource[PROMREG_MAX];
|
|
|
|
struct linux_prom_registers reg_addrs[PROMREG_MAX];
|
|
int num_registers, ranges_applied;
|
|
|
|
struct linux_prom_ranges device_ranges[PROMREG_MAX];
|
|
int num_device_ranges;
|
|
|
|
unsigned int irqs[4];
|
|
int num_irqs;
|
|
};
|
|
|
|
/* This struct describes the SBus(s) found on this machine. */
|
|
struct sbus_bus {
|
|
void *iommu; /* Opaque IOMMU cookie */
|
|
struct sbus_dev *devices; /* Tree of SBUS devices */
|
|
struct sbus_bus *next; /* Next SBUS in system */
|
|
int prom_node; /* OBP node of SBUS */
|
|
char prom_name[64]; /* Usually "sbus" or "sbi" */
|
|
int clock_freq;
|
|
|
|
struct linux_prom_ranges sbus_ranges[PROMREG_MAX];
|
|
int num_sbus_ranges;
|
|
|
|
int portid;
|
|
void *starfire_cookie;
|
|
};
|
|
|
|
extern struct sbus_bus *sbus_root;
|
|
|
|
/* Device probing routines could find these handy */
|
|
#define for_each_sbus(bus) \
|
|
for((bus) = sbus_root; (bus); (bus)=(bus)->next)
|
|
|
|
#define for_each_sbusdev(device, bus) \
|
|
for((device) = (bus)->devices; (device); (device)=(device)->next)
|
|
|
|
#define for_all_sbusdev(device, bus) \
|
|
for ((bus) = sbus_root; (bus); (bus) = (bus)->next) \
|
|
for ((device) = (bus)->devices; (device); (device) = (device)->next)
|
|
|
|
/* Driver DVMA interfaces. */
|
|
#define sbus_can_dma_64bit(sdev) (1)
|
|
#define sbus_can_burst64(sdev) (1)
|
|
extern void sbus_set_sbus64(struct sbus_dev *, int);
|
|
|
|
/* These yield IOMMU mappings in consistent mode. */
|
|
extern void *sbus_alloc_consistent(struct sbus_dev *, size_t, dma_addr_t *dma_addrp);
|
|
extern void sbus_free_consistent(struct sbus_dev *, size_t, void *, dma_addr_t);
|
|
|
|
#define SBUS_DMA_BIDIRECTIONAL DMA_BIDIRECTIONAL
|
|
#define SBUS_DMA_TODEVICE DMA_TO_DEVICE
|
|
#define SBUS_DMA_FROMDEVICE DMA_FROM_DEVICE
|
|
#define SBUS_DMA_NONE DMA_NONE
|
|
|
|
/* All the rest use streaming mode mappings. */
|
|
extern dma_addr_t sbus_map_single(struct sbus_dev *, void *, size_t, int);
|
|
extern void sbus_unmap_single(struct sbus_dev *, dma_addr_t, size_t, int);
|
|
extern int sbus_map_sg(struct sbus_dev *, struct scatterlist *, int, int);
|
|
extern void sbus_unmap_sg(struct sbus_dev *, struct scatterlist *, int, int);
|
|
|
|
/* Finally, allow explicit synchronization of streamable mappings. */
|
|
extern void sbus_dma_sync_single_for_cpu(struct sbus_dev *, dma_addr_t, size_t, int);
|
|
#define sbus_dma_sync_single sbus_dma_sync_single_for_cpu
|
|
extern void sbus_dma_sync_single_for_device(struct sbus_dev *, dma_addr_t, size_t, int);
|
|
extern void sbus_dma_sync_sg_for_cpu(struct sbus_dev *, struct scatterlist *, int, int);
|
|
#define sbus_dma_sync_sg sbus_dma_sync_sg_for_cpu
|
|
extern void sbus_dma_sync_sg_for_device(struct sbus_dev *, struct scatterlist *, int, int);
|
|
|
|
#endif /* !(_SPARC64_SBUS_H) */
|