mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 10:56:48 +07:00
055a251214
This extends the API somewhat to allow for platform-specific VCR reading and writing. Some platforms (like SH4-202) implement the VCR in a split VCRL and VCRH, but end up being in reverse order or have other quirks that need to be dealt with, so we add a set of superhyway_ops per-bus to accomodate this. We also have to extend the per-device resources somewhat, as some devices now conveniently split control and data blocks. So we allow a platform to register its set of SuperHyway devices via superhyway_add_devices() with the control block always ordered as the first resource (as this is the one that userspace cares about). Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
/*
|
|
* include/linux/superhyway.h
|
|
*
|
|
* SuperHyway Bus definitions
|
|
*
|
|
* Copyright (C) 2004, 2005 Paul Mundt <lethal@linux-sh.org>
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
#ifndef __LINUX_SUPERHYWAY_H
|
|
#define __LINUX_SUPERHYWAY_H
|
|
|
|
#include <linux/device.h>
|
|
|
|
/*
|
|
* SuperHyway IDs
|
|
*/
|
|
#define SUPERHYWAY_DEVICE_ID_SH5_DMAC 0x0183
|
|
|
|
struct superhyway_vcr_info {
|
|
u8 perr_flags; /* P-port Error flags */
|
|
u8 merr_flags; /* Module Error flags */
|
|
u16 mod_vers; /* Module Version */
|
|
u16 mod_id; /* Module ID */
|
|
u8 bot_mb; /* Bottom Memory block */
|
|
u8 top_mb; /* Top Memory block */
|
|
};
|
|
|
|
struct superhyway_ops {
|
|
int (*read_vcr)(unsigned long base, struct superhyway_vcr_info *vcr);
|
|
int (*write_vcr)(unsigned long base, struct superhyway_vcr_info vcr);
|
|
};
|
|
|
|
struct superhyway_bus {
|
|
struct superhyway_ops *ops;
|
|
};
|
|
|
|
extern struct superhyway_bus superhyway_channels[];
|
|
|
|
struct superhyway_device_id {
|
|
unsigned int id;
|
|
unsigned long driver_data;
|
|
};
|
|
|
|
struct superhyway_device;
|
|
extern struct bus_type superhyway_bus_type;
|
|
|
|
struct superhyway_driver {
|
|
char *name;
|
|
|
|
const struct superhyway_device_id *id_table;
|
|
struct device_driver drv;
|
|
|
|
int (*probe)(struct superhyway_device *dev, const struct superhyway_device_id *id);
|
|
void (*remove)(struct superhyway_device *dev);
|
|
};
|
|
|
|
#define to_superhyway_driver(d) container_of((d), struct superhyway_driver, drv)
|
|
|
|
struct superhyway_device {
|
|
char name[32];
|
|
|
|
struct device dev;
|
|
|
|
struct superhyway_device_id id;
|
|
struct superhyway_driver *drv;
|
|
struct superhyway_bus *bus;
|
|
|
|
int num_resources;
|
|
struct resource *resource;
|
|
struct superhyway_vcr_info vcr;
|
|
};
|
|
|
|
#define to_superhyway_device(d) container_of((d), struct superhyway_device, dev)
|
|
|
|
#define superhyway_get_drvdata(d) dev_get_drvdata(&(d)->dev)
|
|
#define superhyway_set_drvdata(d,p) dev_set_drvdata(&(d)->dev, (p))
|
|
|
|
static inline int
|
|
superhyway_read_vcr(struct superhyway_device *dev, unsigned long base,
|
|
struct superhyway_vcr_info *vcr)
|
|
{
|
|
return dev->bus->ops->read_vcr(base, vcr);
|
|
}
|
|
|
|
static inline int
|
|
superhyway_write_vcr(struct superhyway_device *dev, unsigned long base,
|
|
struct superhyway_vcr_info vcr)
|
|
{
|
|
return dev->bus->ops->write_vcr(base, vcr);
|
|
}
|
|
|
|
extern int superhyway_scan_bus(struct superhyway_bus *);
|
|
|
|
/* drivers/sh/superhyway/superhyway.c */
|
|
int superhyway_register_driver(struct superhyway_driver *);
|
|
void superhyway_unregister_driver(struct superhyway_driver *);
|
|
int superhyway_add_device(unsigned long base, struct superhyway_device *, struct superhyway_bus *);
|
|
int superhyway_add_devices(struct superhyway_bus *bus, struct superhyway_device **devices, int nr_devices);
|
|
|
|
/* drivers/sh/superhyway/superhyway-sysfs.c */
|
|
extern struct device_attribute superhyway_dev_attrs[];
|
|
|
|
#endif /* __LINUX_SUPERHYWAY_H */
|
|
|