zorro.h
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上传日期:2009-04-28
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- /*
- * linux/zorro.h -- Amiga AutoConfig (Zorro) Bus Definitions
- *
- * Copyright (C) 1995--2003 Geert Uytterhoeven
- *
- * 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_ZORRO_H
- #define _LINUX_ZORRO_H
- #ifndef __ASSEMBLY__
- #include <linux/device.h>
- /*
- * Each Zorro board has a 32-bit ID of the form
- *
- * mmmmmmmmmmmmmmmmppppppppeeeeeeee
- *
- * with
- *
- * mmmmmmmmmmmmmmmm 16-bit Manufacturer ID (assigned by CBM (sigh))
- * pppppppp 8-bit Product ID (assigned by manufacturer)
- * eeeeeeee 8-bit Extended Product ID (currently only used
- * for some GVP boards)
- */
- #define ZORRO_MANUF(id) ((id) >> 16)
- #define ZORRO_PROD(id) (((id) >> 8) & 0xff)
- #define ZORRO_EPC(id) ((id) & 0xff)
- #define ZORRO_ID(manuf, prod, epc)
- ((ZORRO_MANUF_##manuf << 16) | ((prod) << 8) | (epc))
- typedef __u32 zorro_id;
- #define ZORRO_WILDCARD (0xffffffff) /* not official */
- /* Include the ID list */
- #include <linux/zorro_ids.h>
- /*
- * GVP identifies most of its products through the 'extended product code'
- * (epc). The epc has to be ANDed with the GVP_PRODMASK before the
- * identification.
- */
- #define GVP_PRODMASK (0xf8)
- #define GVP_SCSICLKMASK (0x01)
- enum GVP_flags {
- GVP_IO = 0x01,
- GVP_ACCEL = 0x02,
- GVP_SCSI = 0x04,
- GVP_24BITDMA = 0x08,
- GVP_25BITDMA = 0x10,
- GVP_NOBANK = 0x20,
- GVP_14MHZ = 0x40,
- };
- struct Node {
- struct Node *ln_Succ; /* Pointer to next (successor) */
- struct Node *ln_Pred; /* Pointer to previous (predecessor) */
- __u8 ln_Type;
- __s8 ln_Pri; /* Priority, for sorting */
- __s8 *ln_Name; /* ID string, null terminated */
- } __attribute__ ((packed));
- struct ExpansionRom {
- /* -First 16 bytes of the expansion ROM */
- __u8 er_Type; /* Board type, size and flags */
- __u8 er_Product; /* Product number, assigned by manufacturer */
- __u8 er_Flags; /* Flags */
- __u8 er_Reserved03; /* Must be zero ($ff inverted) */
- __u16 er_Manufacturer; /* Unique ID, ASSIGNED BY COMMODORE-AMIGA! */
- __u32 er_SerialNumber; /* Available for use by manufacturer */
- __u16 er_InitDiagVec; /* Offset to optional "DiagArea" structure */
- __u8 er_Reserved0c;
- __u8 er_Reserved0d;
- __u8 er_Reserved0e;
- __u8 er_Reserved0f;
- } __attribute__ ((packed));
- /* er_Type board type bits */
- #define ERT_TYPEMASK 0xc0
- #define ERT_ZORROII 0xc0
- #define ERT_ZORROIII 0x80
- /* other bits defined in er_Type */
- #define ERTB_MEMLIST 5 /* Link RAM into free memory list */
- #define ERTF_MEMLIST (1<<5)
- struct ConfigDev {
- struct Node cd_Node;
- __u8 cd_Flags; /* (read/write) */
- __u8 cd_Pad; /* reserved */
- struct ExpansionRom cd_Rom; /* copy of board's expansion ROM */
- void *cd_BoardAddr; /* where in memory the board was placed */
- __u32 cd_BoardSize; /* size of board in bytes */
- __u16 cd_SlotAddr; /* which slot number (PRIVATE) */
- __u16 cd_SlotSize; /* number of slots (PRIVATE) */
- void *cd_Driver; /* pointer to node of driver */
- struct ConfigDev *cd_NextCD; /* linked list of drivers to config */
- __u32 cd_Unused[4]; /* for whatever the driver wants */
- } __attribute__ ((packed));
- #else /* __ASSEMBLY__ */
- LN_Succ = 0
- LN_Pred = LN_Succ+4
- LN_Type = LN_Pred+4
- LN_Pri = LN_Type+1
- LN_Name = LN_Pri+1
- LN_sizeof = LN_Name+4
- ER_Type = 0
- ER_Product = ER_Type+1
- ER_Flags = ER_Product+1
- ER_Reserved03 = ER_Flags+1
- ER_Manufacturer = ER_Reserved03+1
- ER_SerialNumber = ER_Manufacturer+2
- ER_InitDiagVec = ER_SerialNumber+4
- ER_Reserved0c = ER_InitDiagVec+2
- ER_Reserved0d = ER_Reserved0c+1
- ER_Reserved0e = ER_Reserved0d+1
- ER_Reserved0f = ER_Reserved0e+1
- ER_sizeof = ER_Reserved0f+1
- CD_Node = 0
- CD_Flags = CD_Node+LN_sizeof
- CD_Pad = CD_Flags+1
- CD_Rom = CD_Pad+1
- CD_BoardAddr = CD_Rom+ER_sizeof
- CD_BoardSize = CD_BoardAddr+4
- CD_SlotAddr = CD_BoardSize+4
- CD_SlotSize = CD_SlotAddr+2
- CD_Driver = CD_SlotSize+2
- CD_NextCD = CD_Driver+4
- CD_Unused = CD_NextCD+4
- CD_sizeof = CD_Unused+(4*4)
- #endif /* __ASSEMBLY__ */
- #ifndef __ASSEMBLY__
- #define ZORRO_NUM_AUTO 16
- #ifdef __KERNEL__
- #include <linux/init.h>
- #include <linux/ioport.h>
- #include <asm/zorro.h>
- /*
- * Zorro devices
- */
- struct zorro_dev {
- struct ExpansionRom rom;
- zorro_id id;
- struct zorro_driver *driver; /* which driver has allocated this device */
- struct device dev; /* Generic device interface */
- u16 slotaddr;
- u16 slotsize;
- char name[64];
- struct resource resource;
- };
- #define to_zorro_dev(n) container_of(n, struct zorro_dev, dev)
- /*
- * Zorro bus
- */
- struct zorro_bus {
- struct list_head devices; /* list of devices on this bus */
- unsigned int num_resources; /* number of resources */
- struct resource resources[4]; /* address space routed to this bus */
- struct device dev;
- char name[10];
- };
- extern struct zorro_bus zorro_bus; /* single Zorro bus */
- extern struct bus_type zorro_bus_type;
- /*
- * Zorro device IDs
- */
- struct zorro_device_id {
- zorro_id id; /* Device ID or ZORRO_WILDCARD */
- unsigned long driver_data; /* Data private to the driver */
- };
- /*
- * Zorro device drivers
- */
- struct zorro_driver {
- struct list_head node;
- char *name;
- const struct zorro_device_id *id_table; /* NULL if wants all devices */
- int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id); /* New device inserted */
- void (*remove)(struct zorro_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */
- struct device_driver driver;
- };
- #define to_zorro_driver(drv) container_of(drv, struct zorro_driver, driver)
- #define zorro_for_each_dev(dev)
- for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
- /* New-style probing */
- extern int zorro_register_driver(struct zorro_driver *);
- extern void zorro_unregister_driver(struct zorro_driver *);
- extern const struct zorro_device_id *zorro_match_device(const struct zorro_device_id *ids, const struct zorro_dev *z);
- static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z)
- {
- return z->driver;
- }
- extern unsigned int zorro_num_autocon; /* # of autoconfig devices found */
- extern struct zorro_dev zorro_autocon[ZORRO_NUM_AUTO];
- /*
- * Zorro Functions
- */
- extern struct zorro_dev *zorro_find_device(zorro_id id,
- struct zorro_dev *from);
- #define zorro_resource_start(z) ((z)->resource.start)
- #define zorro_resource_end(z) ((z)->resource.end)
- #define zorro_resource_len(z) ((z)->resource.end-(z)->resource.start+1)
- #define zorro_resource_flags(z) ((z)->resource.flags)
- #define zorro_request_device(z, name)
- request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
- #define zorro_release_device(z)
- release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
- /* Similar to the helpers above, these manipulate per-zorro_dev
- * driver-specific data. They are really just a wrapper around
- * the generic device structure functions of these calls.
- */
- static inline void *zorro_get_drvdata (struct zorro_dev *z)
- {
- return dev_get_drvdata(&z->dev);
- }
- static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
- {
- dev_set_drvdata(&z->dev, data);
- }
- /*
- * A helper function which helps ensure correct zorro_driver
- * setup and cleanup for commonly-encountered hotplug/modular cases
- *
- * This MUST stay in a header, as it checks for -DMODULE
- */
- static inline int zorro_module_init(struct zorro_driver *drv)
- {
- int rc = zorro_register_driver(drv);
- if (rc > 0)
- return 0;
- /* iff CONFIG_HOTPLUG and built into kernel, we should
- * leave the driver around for future hotplug events.
- * For the module case, a hotplug daemon of some sort
- * should load a module in response to an insert event. */
- #if defined(CONFIG_HOTPLUG) && !defined(MODULE)
- if (rc == 0)
- return 0;
- #else
- if (rc == 0)
- rc = -ENODEV;
- #endif
- /* if we get here, we need to clean up Zorro driver instance
- * and return some sort of error */
- zorro_unregister_driver(drv);
- return rc;
- }
- /*
- * Bitmask indicating portions of available Zorro II RAM that are unused
- * by the system. Every bit represents a 64K chunk, for a maximum of 8MB
- * (128 chunks, physical 0x00200000-0x009fffff).
- *
- * If you want to use (= allocate) portions of this RAM, you should clear
- * the corresponding bits.
- */
- extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
- #define Z2RAM_START (0x00200000)
- #define Z2RAM_END (0x00a00000)
- #define Z2RAM_SIZE (0x00800000)
- #define Z2RAM_CHUNKSIZE (0x00010000)
- #define Z2RAM_CHUNKMASK (0x0000ffff)
- #define Z2RAM_CHUNKSHIFT (16)
- #endif /* !__ASSEMBLY__ */
- #endif /* __KERNEL__ */
- #endif /* _LINUX_ZORRO_H */