zorro.h

  1/*
  2 *  linux/zorro.h -- Amiga AutoConfig (Zorro) Bus Definitions
  3 *
  4 *  Copyright (C) 1995--2003 Geert Uytterhoeven
  5 *
  6 *  This file is subject to the terms and conditions of the GNU General Public
  7 *  License.  See the file COPYING in the main directory of this archive
  8 *  for more details.
  9 */
 10
 11#ifndef _LINUX_ZORRO_H
 12#define _LINUX_ZORRO_H
 13
 14
 15#include <uapi/linux/zorro.h>
 16
 17#include <linux/device.h>
 18#include <linux/init.h>
 19#include <linux/ioport.h>
 20#include <linux/mod_devicetable.h>
 21
 22#include <asm/zorro.h>
 23
 24
 25    /*
 26     *  Zorro devices
 27     */
 28
 29struct zorro_dev {
 30    struct ExpansionRom rom;
 31    zorro_id id;
 32    struct device dev;			/* Generic device interface */
 33    u16 slotaddr;
 34    u16 slotsize;
 35    char name[64];
 36    struct resource resource;
 37};
 38
 39#define	to_zorro_dev(n)	container_of(n, struct zorro_dev, dev)
 40
 41
 42    /*
 43     *  Zorro device drivers
 44     */
 45
 46struct zorro_driver {
 47    struct list_head node;
 48    char *name;
 49    const struct zorro_device_id *id_table;	/* NULL if wants all devices */
 50    int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id);	/* New device inserted */
 51    void (*remove)(struct zorro_dev *z);	/* Device removed (NULL if not a hot-plug capable driver) */
 52    struct device_driver driver;
 53};
 54
 55#define	to_zorro_driver(drv)	container_of_const(drv, struct zorro_driver, driver)
 56
 57
 58#define zorro_for_each_dev(dev)	\
 59	for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
 60
 61
 62/* New-style probing */
 63extern int zorro_register_driver(struct zorro_driver *);
 64extern void zorro_unregister_driver(struct zorro_driver *);
 65
 66
 67extern unsigned int zorro_num_autocon;	/* # of autoconfig devices found */
 68extern struct zorro_dev *zorro_autocon;
 69
 70
 71    /*
 72     * Minimal information about a Zorro device, passed from bootinfo
 73     * Only available temporarily, i.e. until initmem has been freed!
 74     */
 75
 76struct zorro_dev_init {
 77	struct ExpansionRom rom;
 78	u16 slotaddr;
 79	u16 slotsize;
 80	u32 boardaddr;
 81	u32 boardsize;
 82};
 83
 84extern struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
 85
 86
 87    /*
 88     *  Zorro Functions
 89     */
 90
 91extern struct zorro_dev *zorro_find_device(zorro_id id,
 92					   struct zorro_dev *from);
 93
 94#define zorro_resource_start(z)	((z)->resource.start)
 95#define zorro_resource_end(z)	((z)->resource.end)
 96#define zorro_resource_len(z)	(resource_size(&(z)->resource))
 97#define zorro_resource_flags(z)	((z)->resource.flags)
 98
 99#define zorro_request_device(z, name) \
100    request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
101#define zorro_release_device(z) \
102    release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
103
104/* Similar to the helpers above, these manipulate per-zorro_dev
105 * driver-specific data.  They are really just a wrapper around
106 * the generic device structure functions of these calls.
107 */
108static inline void *zorro_get_drvdata (struct zorro_dev *z)
109{
110	return dev_get_drvdata(&z->dev);
111}
112
113static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
114{
115	dev_set_drvdata(&z->dev, data);
116}
117
118
119    /*
120     *  Bitmask indicating portions of available Zorro II RAM that are unused
121     *  by the system. Every bit represents a 64K chunk, for a maximum of 8MB
122     *  (128 chunks, physical 0x00200000-0x009fffff).
123     *
124     *  If you want to use (= allocate) portions of this RAM, you should clear
125     *  the corresponding bits.
126     */
127
128extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
129
130#define Z2RAM_START		(0x00200000)
131#define Z2RAM_END		(0x00a00000)
132#define Z2RAM_SIZE		(0x00800000)
133#define Z2RAM_CHUNKSIZE		(0x00010000)
134#define Z2RAM_CHUNKMASK		(0x0000ffff)
135#define Z2RAM_CHUNKSHIFT	(16)
136
137
138#endif /* _LINUX_ZORRO_H */