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The only actual use is to check in zorro_device_probe() that the device isn't already bound. The driver core already ensures this however so the check can go away which allows to drop the then assigned-only member from struct zorro_dev. If the value was indeed needed somewhere it can always be calculated by to_zorro_driver(z->dev.driver) . Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20210730191035.1455248-5-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/*
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* linux/zorro.h -- Amiga AutoConfig (Zorro) Bus Definitions
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*
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* Copyright (C) 1995--2003 Geert Uytterhoeven
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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#ifndef _LINUX_ZORRO_H
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#define _LINUX_ZORRO_H
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#include <uapi/linux/zorro.h>
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/mod_devicetable.h>
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#include <asm/zorro.h>
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/*
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* Zorro devices
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*/
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struct zorro_dev {
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struct ExpansionRom rom;
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zorro_id id;
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struct device dev; /* Generic device interface */
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u16 slotaddr;
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u16 slotsize;
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char name[64];
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struct resource resource;
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};
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#define to_zorro_dev(n) container_of(n, struct zorro_dev, dev)
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/*
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* Zorro device drivers
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*/
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struct zorro_driver {
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struct list_head node;
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char *name;
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const struct zorro_device_id *id_table; /* NULL if wants all devices */
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int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id); /* New device inserted */
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void (*remove)(struct zorro_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */
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struct device_driver driver;
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};
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#define to_zorro_driver(drv) container_of(drv, struct zorro_driver, driver)
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#define zorro_for_each_dev(dev) \
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for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
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/* New-style probing */
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extern int zorro_register_driver(struct zorro_driver *);
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extern void zorro_unregister_driver(struct zorro_driver *);
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extern unsigned int zorro_num_autocon; /* # of autoconfig devices found */
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extern struct zorro_dev *zorro_autocon;
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/*
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* Minimal information about a Zorro device, passed from bootinfo
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* Only available temporarily, i.e. until initmem has been freed!
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*/
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struct zorro_dev_init {
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struct ExpansionRom rom;
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u16 slotaddr;
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u16 slotsize;
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u32 boardaddr;
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u32 boardsize;
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};
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extern struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
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/*
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* Zorro Functions
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*/
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extern struct zorro_dev *zorro_find_device(zorro_id id,
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struct zorro_dev *from);
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#define zorro_resource_start(z) ((z)->resource.start)
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#define zorro_resource_end(z) ((z)->resource.end)
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#define zorro_resource_len(z) (resource_size(&(z)->resource))
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#define zorro_resource_flags(z) ((z)->resource.flags)
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#define zorro_request_device(z, name) \
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request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
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#define zorro_release_device(z) \
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release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
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/* Similar to the helpers above, these manipulate per-zorro_dev
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* driver-specific data. They are really just a wrapper around
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* the generic device structure functions of these calls.
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*/
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static inline void *zorro_get_drvdata (struct zorro_dev *z)
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{
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return dev_get_drvdata(&z->dev);
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}
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static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
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{
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dev_set_drvdata(&z->dev, data);
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}
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/*
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* Bitmask indicating portions of available Zorro II RAM that are unused
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* by the system. Every bit represents a 64K chunk, for a maximum of 8MB
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* (128 chunks, physical 0x00200000-0x009fffff).
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*
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* If you want to use (= allocate) portions of this RAM, you should clear
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* the corresponding bits.
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*/
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extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
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#define Z2RAM_START (0x00200000)
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#define Z2RAM_END (0x00a00000)
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#define Z2RAM_SIZE (0x00800000)
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#define Z2RAM_CHUNKSIZE (0x00010000)
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#define Z2RAM_CHUNKMASK (0x0000ffff)
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#define Z2RAM_CHUNKSHIFT (16)
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#endif /* _LINUX_ZORRO_H */
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