linux/include/linux/zorro.h
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   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#include <linux/device.h>
  15
  16
  17    /*
  18     *  Each Zorro board has a 32-bit ID of the form
  19     *
  20     *      mmmmmmmmmmmmmmmmppppppppeeeeeeee
  21     *
  22     *  with
  23     *
  24     *      mmmmmmmmmmmmmmmm    16-bit Manufacturer ID (assigned by CBM (sigh))
  25     *      pppppppp            8-bit Product ID (assigned by manufacturer)
  26     *      eeeeeeee            8-bit Extended Product ID (currently only used
  27     *                          for some GVP boards)
  28     */
  29
  30
  31#define ZORRO_MANUF(id)         ((id) >> 16)
  32#define ZORRO_PROD(id)          (((id) >> 8) & 0xff)
  33#define ZORRO_EPC(id)           ((id) & 0xff)
  34
  35#define ZORRO_ID(manuf, prod, epc) \
  36    ((ZORRO_MANUF_##manuf << 16) | ((prod) << 8) | (epc))
  37
  38typedef __u32 zorro_id;
  39
  40
  41/* Include the ID list */
  42#include <linux/zorro_ids.h>
  43
  44
  45    /*
  46     *  GVP identifies most of its products through the 'extended product code'
  47     *  (epc). The epc has to be ANDed with the GVP_PRODMASK before the
  48     *  identification.
  49     */
  50
  51#define GVP_PRODMASK                    (0xf8)
  52#define GVP_SCSICLKMASK                 (0x01)
  53
  54enum GVP_flags {
  55    GVP_IO              = 0x01,
  56    GVP_ACCEL           = 0x02,
  57    GVP_SCSI            = 0x04,
  58    GVP_24BITDMA        = 0x08,
  59    GVP_25BITDMA        = 0x10,
  60    GVP_NOBANK          = 0x20,
  61    GVP_14MHZ           = 0x40,
  62};
  63
  64
  65struct Node {
  66    struct  Node *ln_Succ;      /* Pointer to next (successor) */
  67    struct  Node *ln_Pred;      /* Pointer to previous (predecessor) */
  68    __u8    ln_Type;
  69    __s8    ln_Pri;             /* Priority, for sorting */
  70    __s8    *ln_Name;           /* ID string, null terminated */
  71} __attribute__ ((packed));
  72
  73struct ExpansionRom {
  74    /* -First 16 bytes of the expansion ROM */
  75    __u8  er_Type;              /* Board type, size and flags */
  76    __u8  er_Product;           /* Product number, assigned by manufacturer */
  77    __u8  er_Flags;             /* Flags */
  78    __u8  er_Reserved03;        /* Must be zero ($ff inverted) */
  79    __u16 er_Manufacturer;      /* Unique ID, ASSIGNED BY COMMODORE-AMIGA! */
  80    __u32 er_SerialNumber;      /* Available for use by manufacturer */
  81    __u16 er_InitDiagVec;       /* Offset to optional "DiagArea" structure */
  82    __u8  er_Reserved0c;
  83    __u8  er_Reserved0d;
  84    __u8  er_Reserved0e;
  85    __u8  er_Reserved0f;
  86} __attribute__ ((packed));
  87
  88/* er_Type board type bits */
  89#define ERT_TYPEMASK    0xc0
  90#define ERT_ZORROII     0xc0
  91#define ERT_ZORROIII    0x80
  92
  93/* other bits defined in er_Type */
  94#define ERTB_MEMLIST    5               /* Link RAM into free memory list */
  95#define ERTF_MEMLIST    (1<<5)
  96
  97struct ConfigDev {
  98    struct Node         cd_Node;
  99    __u8                cd_Flags;       /* (read/write) */
 100    __u8                cd_Pad;         /* reserved */
 101    struct ExpansionRom cd_Rom;         /* copy of board's expansion ROM */
 102    void                *cd_BoardAddr;  /* where in memory the board was placed */
 103    __u32               cd_BoardSize;   /* size of board in bytes */
 104    __u16               cd_SlotAddr;    /* which slot number (PRIVATE) */
 105    __u16               cd_SlotSize;    /* number of slots (PRIVATE) */
 106    void                *cd_Driver;     /* pointer to node of driver */
 107    struct ConfigDev    *cd_NextCD;     /* linked list of drivers to config */
 108    __u32               cd_Unused[4];   /* for whatever the driver wants */
 109} __attribute__ ((packed));
 110
 111#define ZORRO_NUM_AUTO          16
 112
 113#ifdef __KERNEL__
 114
 115#include <linux/init.h>
 116#include <linux/ioport.h>
 117#include <linux/mod_devicetable.h>
 118
 119#include <asm/zorro.h>
 120
 121
 122    /*
 123     *  Zorro devices
 124     */
 125
 126struct zorro_dev {
 127    struct ExpansionRom rom;
 128    zorro_id id;
 129    struct zorro_driver *driver;        /* which driver has allocated this device */
 130    struct device dev;                  /* Generic device interface */
 131    u16 slotaddr;
 132    u16 slotsize;
 133    char name[64];
 134    struct resource resource;
 135};
 136
 137#define to_zorro_dev(n) container_of(n, struct zorro_dev, dev)
 138
 139
 140    /*
 141     *  Zorro bus
 142     */
 143
 144extern struct bus_type zorro_bus_type;
 145
 146
 147    /*
 148     *  Zorro device drivers
 149     */
 150
 151struct zorro_driver {
 152    struct list_head node;
 153    char *name;
 154    const struct zorro_device_id *id_table;     /* NULL if wants all devices */
 155    int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id);        /* New device inserted */
 156    void (*remove)(struct zorro_dev *z);        /* Device removed (NULL if not a hot-plug capable driver) */
 157    struct device_driver driver;
 158};
 159
 160#define to_zorro_driver(drv)    container_of(drv, struct zorro_driver, driver)
 161
 162
 163#define zorro_for_each_dev(dev) \
 164        for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
 165
 166
 167/* New-style probing */
 168extern int zorro_register_driver(struct zorro_driver *);
 169extern void zorro_unregister_driver(struct zorro_driver *);
 170extern const struct zorro_device_id *zorro_match_device(const struct zorro_device_id *ids, const struct zorro_dev *z);
 171static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z)
 172{
 173    return z->driver;
 174}
 175
 176
 177extern unsigned int zorro_num_autocon;  /* # of autoconfig devices found */
 178extern struct zorro_dev zorro_autocon[ZORRO_NUM_AUTO];
 179
 180
 181    /*
 182     *  Zorro Functions
 183     */
 184
 185extern struct zorro_dev *zorro_find_device(zorro_id id,
 186                                           struct zorro_dev *from);
 187
 188#define zorro_resource_start(z) ((z)->resource.start)
 189#define zorro_resource_end(z)   ((z)->resource.end)
 190#define zorro_resource_len(z)   (resource_size(&(z)->resource))
 191#define zorro_resource_flags(z) ((z)->resource.flags)
 192
 193#define zorro_request_device(z, name) \
 194    request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
 195#define zorro_release_device(z) \
 196    release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
 197
 198/* Similar to the helpers above, these manipulate per-zorro_dev
 199 * driver-specific data.  They are really just a wrapper around
 200 * the generic device structure functions of these calls.
 201 */
 202static inline void *zorro_get_drvdata (struct zorro_dev *z)
 203{
 204        return dev_get_drvdata(&z->dev);
 205}
 206
 207static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
 208{
 209        dev_set_drvdata(&z->dev, data);
 210}
 211
 212
 213    /*
 214     *  Bitmask indicating portions of available Zorro II RAM that are unused
 215     *  by the system. Every bit represents a 64K chunk, for a maximum of 8MB
 216     *  (128 chunks, physical 0x00200000-0x009fffff).
 217     *
 218     *  If you want to use (= allocate) portions of this RAM, you should clear
 219     *  the corresponding bits.
 220     */
 221
 222extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
 223
 224#define Z2RAM_START             (0x00200000)
 225#define Z2RAM_END               (0x00a00000)
 226#define Z2RAM_SIZE              (0x00800000)
 227#define Z2RAM_CHUNKSIZE         (0x00010000)
 228#define Z2RAM_CHUNKMASK         (0x0000ffff)
 229#define Z2RAM_CHUNKSHIFT        (16)
 230
 231
 232#endif /* __KERNEL__ */
 233
 234#endif /* _LINUX_ZORRO_H */
 235
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