include/linux/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 #ifndef __ASSEMBLY__
  15
  16 #include <linux/device.h>
  17
  18
  19     /*
  20      *  Each Zorro board has a 32-bit ID of the form
  21      *
  22      *      mmmmmmmmmmmmmmmmppppppppeeeeeeee
  23      *
  24      *  with
  25      *
  26      *      mmmmmmmmmmmmmmmm    16-bit Manufacturer ID (assigned by CBM (sigh))
  27      *      pppppppp            8-bit Product ID (assigned by manufacturer)
  28      *      eeeeeeee            8-bit Extended Product ID (currently only used
  29      *                          for some GVP boards)
  30      */
  31
  32
  33 #define ZORRO_MANUF(id)         ((id) >> 16)
  34 #define ZORRO_PROD(id)          (((id) >> 8) & 0xff)
  35 #define ZORRO_EPC(id)           ((id) & 0xff)
  36
  37 #define ZORRO_ID(manuf, prod, epc) \
  38     ((ZORRO_MANUF_##manuf << 16) | ((prod) << 8) | (epc))
  39
  40 typedef __u32 zorro_id;
  41
  42
  43 #define ZORRO_WILDCARD          (0xffffffff)    /* not official */
  44
  45 /* Include the ID list */
  46 #include <linux/zorro_ids.h>
  47
  48
  49     /*
  50      *  GVP identifies most of its products through the 'extended product code'
  51      *  (epc). The epc has to be ANDed with the GVP_PRODMASK before the
  52      *  identification.
  53      */
  54
  55 #define GVP_PRODMASK                    (0xf8)
  56 #define GVP_SCSICLKMASK                 (0x01)
  57
  58 enum GVP_flags {
  59     GVP_IO              = 0x01,
  60     GVP_ACCEL           = 0x02,
  61     GVP_SCSI            = 0x04,
  62     GVP_24BITDMA        = 0x08,
  63     GVP_25BITDMA        = 0x10,
  64     GVP_NOBANK          = 0x20,
  65     GVP_14MHZ           = 0x40,
  66 };
  67
  68
  69 struct Node {
  70     struct  Node *ln_Succ;      /* Pointer to next (successor) */
  71     struct  Node *ln_Pred;      /* Pointer to previous (predecessor) */
  72     __u8    ln_Type;
  73     __s8    ln_Pri;             /* Priority, for sorting */
  74     __s8    *ln_Name;           /* ID string, null terminated */
  75 } __attribute__ ((packed));
  76
  77 struct ExpansionRom {
  78     /* -First 16 bytes of the expansion ROM */
  79     __u8  er_Type;              /* Board type, size and flags */
  80     __u8  er_Product;           /* Product number, assigned by manufacturer */
  81     __u8  er_Flags;             /* Flags */
  82     __u8  er_Reserved03;        /* Must be zero ($ff inverted) */
  83     __u16 er_Manufacturer;      /* Unique ID, ASSIGNED BY COMMODORE-AMIGA! */
  84     __u32 er_SerialNumber;      /* Available for use by manufacturer */
  85     __u16 er_InitDiagVec;       /* Offset to optional "DiagArea" structure */
  86     __u8  er_Reserved0c;
  87     __u8  er_Reserved0d;
  88     __u8  er_Reserved0e;
  89     __u8  er_Reserved0f;
  90 } __attribute__ ((packed));
  91
  92 /* er_Type board type bits */
  93 #define ERT_TYPEMASK    0xc0
  94 #define ERT_ZORROII     0xc0
  95 #define ERT_ZORROIII    0x80
  96
  97 /* other bits defined in er_Type */
  98 #define ERTB_MEMLIST    5               /* Link RAM into free memory list */
  99 #define ERTF_MEMLIST    (1<<5)
 100
 101 struct ConfigDev {
 102     struct Node         cd_Node;
 103     __u8                cd_Flags;       /* (read/write) */
 104     __u8                cd_Pad;         /* reserved */
 105     struct ExpansionRom cd_Rom;         /* copy of board's expansion ROM */
 106     void                *cd_BoardAddr;  /* where in memory the board was placed */
 107     __u32               cd_BoardSize;   /* size of board in bytes */
 108     __u16               cd_SlotAddr;    /* which slot number (PRIVATE) */
 109     __u16               cd_SlotSize;    /* number of slots (PRIVATE) */
 110     void                *cd_Driver;     /* pointer to node of driver */
 111     struct ConfigDev    *cd_NextCD;     /* linked list of drivers to config */
 112     __u32               cd_Unused[4];   /* for whatever the driver wants */
 113 } __attribute__ ((packed));
 114
 115 #else /* __ASSEMBLY__ */
 116
 117 LN_Succ         = 0
 118 LN_Pred         = LN_Succ+4
 119 LN_Type         = LN_Pred+4
 120 LN_Pri          = LN_Type+1
 121 LN_Name         = LN_Pri+1
 122 LN_sizeof       = LN_Name+4
 123
 124 ER_Type         = 0
 125 ER_Product      = ER_Type+1
 126 ER_Flags        = ER_Product+1
 127 ER_Reserved03   = ER_Flags+1
 128 ER_Manufacturer = ER_Reserved03+1
 129 ER_SerialNumber = ER_Manufacturer+2
 130 ER_InitDiagVec  = ER_SerialNumber+4
 131 ER_Reserved0c   = ER_InitDiagVec+2
 132 ER_Reserved0d   = ER_Reserved0c+1
 133 ER_Reserved0e   = ER_Reserved0d+1
 134 ER_Reserved0f   = ER_Reserved0e+1
 135 ER_sizeof       = ER_Reserved0f+1
 136
 137 CD_Node         = 0
 138 CD_Flags        = CD_Node+LN_sizeof
 139 CD_Pad          = CD_Flags+1
 140 CD_Rom          = CD_Pad+1
 141 CD_BoardAddr    = CD_Rom+ER_sizeof
 142 CD_BoardSize    = CD_BoardAddr+4
 143 CD_SlotAddr     = CD_BoardSize+4
 144 CD_SlotSize     = CD_SlotAddr+2
 145 CD_Driver       = CD_SlotSize+2
 146 CD_NextCD       = CD_Driver+4
 147 CD_Unused       = CD_NextCD+4
 148 CD_sizeof       = CD_Unused+(4*4)
 149
 150 #endif /* __ASSEMBLY__ */
 151
 152 #ifndef __ASSEMBLY__
 153
 154 #define ZORRO_NUM_AUTO          16
 155
 156 #ifdef __KERNEL__
 157
 158 #include <linux/init.h>
 159 #include <linux/ioport.h>
 160
 161 #include <asm/zorro.h>
 162
 163
 164     /*
 165      *  Zorro devices
 166      */
 167
 168 struct zorro_dev {
 169     struct ExpansionRom rom;
 170     zorro_id id;
 171     struct zorro_driver *driver;        /* which driver has allocated this device */
 172     struct device dev;                  /* Generic device interface */
 173     u16 slotaddr;
 174     u16 slotsize;
 175     char name[64];
 176     struct resource resource;
 177 };
 178
 179 #define to_zorro_dev(n) container_of(n, struct zorro_dev, dev)
 180
 181
 182     /*
 183      *  Zorro bus
 184      */
 185
 186 struct zorro_bus {
 187     struct list_head devices;           /* list of devices on this bus */
 188     unsigned int num_resources;         /* number of resources */
 189     struct resource resources[4];       /* address space routed to this bus */
 190     struct device dev;
 191     char name[10];
 192 };
 193
 194 extern struct zorro_bus zorro_bus;      /* single Zorro bus */
 195 extern struct bus_type zorro_bus_type;
 196
 197
 198     /*
 199      *  Zorro device IDs
 200      */
 201
 202 struct zorro_device_id {
 203         zorro_id id;                    /* Device ID or ZORRO_WILDCARD */
 204         unsigned long driver_data;      /* Data private to the driver */
 205 };
 206
 207
 208     /*
 209      *  Zorro device drivers
 210      */
 211
 212 struct zorro_driver {
 213     struct list_head node;
 214     char *name;
 215     const struct zorro_device_id *id_table;     /* NULL if wants all devices */
 216     int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id);        /* New device inserted */
 217     void (*remove)(struct zorro_dev *z);        /* Device removed (NULL if not a hot-plug capable driver) */
 218     struct device_driver driver;
 219 };
 220
 221 #define to_zorro_driver(drv)    container_of(drv, struct zorro_driver, driver)
 222
 223
 224 #define zorro_for_each_dev(dev) \
 225         for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
 226
 227
 228 /* New-style probing */
 229 extern int zorro_register_driver(struct zorro_driver *);
 230 extern void zorro_unregister_driver(struct zorro_driver *);
 231 extern const struct zorro_device_id *zorro_match_device(const struct zorro_device_id *ids, const struct zorro_dev *z);
 232 static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z)
 233 {
 234     return z->driver;
 235 }
 236
 237
 238 extern unsigned int zorro_num_autocon;  /* # of autoconfig devices found */
 239 extern struct zorro_dev zorro_autocon[ZORRO_NUM_AUTO];
 240
 241
 242     /*
 243      *  Zorro Functions
 244      */
 245
 246 extern struct zorro_dev *zorro_find_device(zorro_id id,
 247                                            struct zorro_dev *from);
 248
 249 #define zorro_resource_start(z) ((z)->resource.start)
 250 #define zorro_resource_end(z)   ((z)->resource.end)
 251 #define zorro_resource_len(z)   ((z)->resource.end-(z)->resource.start+1)
 252 #define zorro_resource_flags(z) ((z)->resource.flags)
 253
 254 #define zorro_request_device(z, name) \
 255     request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
 256 #define zorro_release_device(z) \
 257     release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
 258
 259 /* Similar to the helpers above, these manipulate per-zorro_dev
 260  * driver-specific data.  They are really just a wrapper around
 261  * the generic device structure functions of these calls.
 262  */
 263 static inline void *zorro_get_drvdata (struct zorro_dev *z)
 264 {
 265         return dev_get_drvdata(&z->dev);
 266 }
 267
 268 static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
 269 {
 270         dev_set_drvdata(&z->dev, data);
 271 }
 272
 273
 274 /*
 275  * A helper function which helps ensure correct zorro_driver
 276  * setup and cleanup for commonly-encountered hotplug/modular cases
 277  *
 278  * This MUST stay in a header, as it checks for -DMODULE
 279  */
 280 static inline int zorro_module_init(struct zorro_driver *drv)
 281 {
 282         int rc = zorro_register_driver(drv);
 283
 284         if (rc > 0)
 285                 return 0;
 286
 287         /* iff CONFIG_HOTPLUG and built into kernel, we should
 288          * leave the driver around for future hotplug events.
 289          * For the module case, a hotplug daemon of some sort
 290          * should load a module in response to an insert event. */
 291 #if defined(CONFIG_HOTPLUG) && !defined(MODULE)
 292         if (rc == 0)
 293                 return 0;
 294 #else
 295         if (rc == 0)
 296                 rc = -ENODEV;
 297 #endif
 298
 299         /* if we get here, we need to clean up Zorro driver instance
 300          * and return some sort of error */
 301         zorro_unregister_driver(drv);
 302
 303         return rc;
 304 }
 305
 306
 307     /*
 308      *  Bitmask indicating portions of available Zorro II RAM that are unused
 309      *  by the system. Every bit represents a 64K chunk, for a maximum of 8MB
 310      *  (128 chunks, physical 0x00200000-0x009fffff).
 311      *
 312      *  If you want to use (= allocate) portions of this RAM, you should clear
 313      *  the corresponding bits.
 314      */
 315
 316 extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
 317
 318 #define Z2RAM_START             (0x00200000)
 319 #define Z2RAM_END               (0x00a00000)
 320 #define Z2RAM_SIZE              (0x00800000)
 321 #define Z2RAM_CHUNKSIZE         (0x00010000)
 322 #define Z2RAM_CHUNKMASK         (0x0000ffff)
 323 #define Z2RAM_CHUNKSHIFT        (16)
 324
 325
 326 #endif /* !__ASSEMBLY__ */
 327 #endif /* __KERNEL__ */
 328
 329 #endif /* _LINUX_ZORRO_H */