330 lines
8.7 KiB
C
330 lines
8.7 KiB
C
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/*
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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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#ifndef __ASSEMBLY__
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#include <linux/device.h>
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/*
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* Each Zorro board has a 32-bit ID of the form
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*
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* mmmmmmmmmmmmmmmmppppppppeeeeeeee
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*
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* with
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*
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* mmmmmmmmmmmmmmmm 16-bit Manufacturer ID (assigned by CBM (sigh))
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* pppppppp 8-bit Product ID (assigned by manufacturer)
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* eeeeeeee 8-bit Extended Product ID (currently only used
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* for some GVP boards)
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*/
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#define ZORRO_MANUF(id) ((id) >> 16)
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#define ZORRO_PROD(id) (((id) >> 8) & 0xff)
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#define ZORRO_EPC(id) ((id) & 0xff)
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#define ZORRO_ID(manuf, prod, epc) \
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((ZORRO_MANUF_##manuf << 16) | ((prod) << 8) | (epc))
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typedef __u32 zorro_id;
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#define ZORRO_WILDCARD (0xffffffff) /* not official */
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/* Include the ID list */
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#include <linux/zorro_ids.h>
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/*
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* GVP identifies most of its products through the 'extended product code'
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* (epc). The epc has to be ANDed with the GVP_PRODMASK before the
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* identification.
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*/
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#define GVP_PRODMASK (0xf8)
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#define GVP_SCSICLKMASK (0x01)
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enum GVP_flags {
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GVP_IO = 0x01,
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GVP_ACCEL = 0x02,
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GVP_SCSI = 0x04,
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GVP_24BITDMA = 0x08,
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GVP_25BITDMA = 0x10,
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GVP_NOBANK = 0x20,
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GVP_14MHZ = 0x40,
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};
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struct Node {
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struct Node *ln_Succ; /* Pointer to next (successor) */
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struct Node *ln_Pred; /* Pointer to previous (predecessor) */
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__u8 ln_Type;
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__s8 ln_Pri; /* Priority, for sorting */
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__s8 *ln_Name; /* ID string, null terminated */
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} __attribute__ ((packed));
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struct ExpansionRom {
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/* -First 16 bytes of the expansion ROM */
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__u8 er_Type; /* Board type, size and flags */
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__u8 er_Product; /* Product number, assigned by manufacturer */
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__u8 er_Flags; /* Flags */
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__u8 er_Reserved03; /* Must be zero ($ff inverted) */
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__u16 er_Manufacturer; /* Unique ID, ASSIGNED BY COMMODORE-AMIGA! */
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__u32 er_SerialNumber; /* Available for use by manufacturer */
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__u16 er_InitDiagVec; /* Offset to optional "DiagArea" structure */
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__u8 er_Reserved0c;
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__u8 er_Reserved0d;
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__u8 er_Reserved0e;
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__u8 er_Reserved0f;
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} __attribute__ ((packed));
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/* er_Type board type bits */
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#define ERT_TYPEMASK 0xc0
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#define ERT_ZORROII 0xc0
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#define ERT_ZORROIII 0x80
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/* other bits defined in er_Type */
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#define ERTB_MEMLIST 5 /* Link RAM into free memory list */
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#define ERTF_MEMLIST (1<<5)
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struct ConfigDev {
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struct Node cd_Node;
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__u8 cd_Flags; /* (read/write) */
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__u8 cd_Pad; /* reserved */
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struct ExpansionRom cd_Rom; /* copy of board's expansion ROM */
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void *cd_BoardAddr; /* where in memory the board was placed */
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__u32 cd_BoardSize; /* size of board in bytes */
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__u16 cd_SlotAddr; /* which slot number (PRIVATE) */
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__u16 cd_SlotSize; /* number of slots (PRIVATE) */
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void *cd_Driver; /* pointer to node of driver */
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struct ConfigDev *cd_NextCD; /* linked list of drivers to config */
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__u32 cd_Unused[4]; /* for whatever the driver wants */
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} __attribute__ ((packed));
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#else /* __ASSEMBLY__ */
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LN_Succ = 0
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LN_Pred = LN_Succ+4
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LN_Type = LN_Pred+4
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LN_Pri = LN_Type+1
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LN_Name = LN_Pri+1
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LN_sizeof = LN_Name+4
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ER_Type = 0
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ER_Product = ER_Type+1
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ER_Flags = ER_Product+1
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ER_Reserved03 = ER_Flags+1
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ER_Manufacturer = ER_Reserved03+1
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ER_SerialNumber = ER_Manufacturer+2
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ER_InitDiagVec = ER_SerialNumber+4
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ER_Reserved0c = ER_InitDiagVec+2
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ER_Reserved0d = ER_Reserved0c+1
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ER_Reserved0e = ER_Reserved0d+1
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ER_Reserved0f = ER_Reserved0e+1
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ER_sizeof = ER_Reserved0f+1
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CD_Node = 0
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CD_Flags = CD_Node+LN_sizeof
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CD_Pad = CD_Flags+1
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CD_Rom = CD_Pad+1
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CD_BoardAddr = CD_Rom+ER_sizeof
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CD_BoardSize = CD_BoardAddr+4
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CD_SlotAddr = CD_BoardSize+4
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CD_SlotSize = CD_SlotAddr+2
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CD_Driver = CD_SlotSize+2
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CD_NextCD = CD_Driver+4
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CD_Unused = CD_NextCD+4
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CD_sizeof = CD_Unused+(4*4)
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#endif /* __ASSEMBLY__ */
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#ifndef __ASSEMBLY__
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#define ZORRO_NUM_AUTO 16
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#ifdef __KERNEL__
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#include <linux/init.h>
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#include <linux/ioport.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 zorro_driver *driver; /* which driver has allocated this device */
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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 bus
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*/
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struct zorro_bus {
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struct list_head devices; /* list of devices on this bus */
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unsigned int num_resources; /* number of resources */
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struct resource resources[4]; /* address space routed to this bus */
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struct device dev;
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char name[10];
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};
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extern struct zorro_bus zorro_bus; /* single Zorro bus */
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extern struct bus_type zorro_bus_type;
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/*
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* Zorro device IDs
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*/
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struct zorro_device_id {
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zorro_id id; /* Device ID or ZORRO_WILDCARD */
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unsigned long driver_data; /* Data private to the driver */
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};
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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 const struct zorro_device_id *zorro_match_device(const struct zorro_device_id *ids, const struct zorro_dev *z);
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static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z)
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{
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return z->driver;
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}
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extern unsigned int zorro_num_autocon; /* # of autoconfig devices found */
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extern struct zorro_dev zorro_autocon[ZORRO_NUM_AUTO];
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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) ((z)->resource.end-(z)->resource.start+1)
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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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* A helper function which helps ensure correct zorro_driver
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* setup and cleanup for commonly-encountered hotplug/modular cases
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*
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* This MUST stay in a header, as it checks for -DMODULE
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*/
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static inline int zorro_module_init(struct zorro_driver *drv)
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{
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int rc = zorro_register_driver(drv);
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if (rc > 0)
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return 0;
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/* iff CONFIG_HOTPLUG and built into kernel, we should
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* leave the driver around for future hotplug events.
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* For the module case, a hotplug daemon of some sort
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* should load a module in response to an insert event. */
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#if defined(CONFIG_HOTPLUG) && !defined(MODULE)
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if (rc == 0)
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return 0;
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#else
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if (rc == 0)
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rc = -ENODEV;
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#endif
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/* if we get here, we need to clean up Zorro driver instance
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* and return some sort of error */
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zorro_unregister_driver(drv);
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return rc;
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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 /* !__ASSEMBLY__ */
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#endif /* __KERNEL__ */
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#endif /* _LINUX_ZORRO_H */
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