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/*
  nubus.h: various definitions and prototypes for NuBus drivers to use.

  Originally written by Alan Cox.

  Hacked to death by C. Scott Ananian and David Huggins-Daines.
 
  Some of the constants in here are from the corresponding
  NetBSD/OpenBSD header file, by Allen Briggs.  We figured out the
  rest of them on our own. */


#ifndef LINUX_NUBUS_H
#define LINUX_NUBUS_H

#ifdef __KERNEL__
#include <asm/nubus.h>
#endif

enum nubus_category {
        NUBUS_CAT_BOARD          = 0x0001,
        NUBUS_CAT_DISPLAY        = 0x0003,
        NUBUS_CAT_NETWORK        = 0x0004,
        NUBUS_CAT_COMMUNICATIONS = 0x0006,
        NUBUS_CAT_FONT           = 0x0009,
        NUBUS_CAT_CPU            = 0x000A,
        /* For lack of a better name */
        NUBUS_CAT_DUODOCK        = 0x0020
};

enum nubus_type_network {
        NUBUS_TYPE_ETHERNET      = 0x0001,
        NUBUS_TYPE_RS232         = 0x0002
};

enum nubus_type_display {
        NUBUS_TYPE_VIDEO         = 0x0001
};

enum nubus_type_cpu {
        NUBUS_TYPE_68020         = 0x0003,
        NUBUS_TYPE_68030         = 0x0004,
        NUBUS_TYPE_68040         = 0x0005
};

/* Known <Cat,Type,SW,HW> tuples: (according to TattleTech and Slots)
 *  68030 motherboards: <10,4,0,24>
 *  68040 motherboards: <10,5,0,24>
 *  DuoDock Plus: <32,1,1,2>
 *
 *  Toby Frame Buffer card: <3,1,1,1>
 *  RBV built-in video (IIci): <3,1,1,24>
 *  Valkyrie built-in video (Q630): <3,1,1,46>
 *  Macintosh Display Card: <3,1,1,25>
 *  Sonora built-in video (P460): <3,1,1,34>
 *  Jet framebuffer (DuoDock Plus): <3,1,1,41>
 *
 *  SONIC comm-slot/on-board and DuoDock Ethernet: <4,1,1,272>
 *  SONIC LC-PDS Ethernet (Dayna, but like Apple 16-bit, sort of): <4,1,1,271>
 *  Sonic Systems Ethernet A-Series Card: <4,1,268,256>
 *  Asante MacCon NuBus-A: <4,1,260,256> (alpha-1.0,1.1 revision)
 *   ROM on the above card: <2,1,0,0>
 *  Cabletron ethernet card: <4,1,1,265>
 *  Farallon ethernet card: <4,1,268,256> (identical to Sonic Systems card)
 *  Kinetics EtherPort IIN: <4,1,259,262>
 *  API Engineering EtherRun_LCa PDS enet card: <4,1,282,256>
 *
 *  Add your devices to the list!  You can obtain the "Slots" utility
 *  from Apple's FTP site at:
 *  ftp://dev.apple.com/devworld/Tool_Chest/Devices_-_Hardware/NuBus_Slot_Manager/
 *
 *  Alternately, TattleTech can be found at any Info-Mac mirror site.  
 *  or from its distribution site: ftp://ftp.decismkr.com/dms
 */


/* DrSW: Uniquely identifies the software interface to a board.  This
   is usually the one you want to look at when writing a driver.  It's
   not as useful as you think, though, because as we should know by
   now (duh), "Apple Compatible" can mean a lot of things... */


/* Add known DrSW values here */
enum nubus_drsw {
        /* NUBUS_CAT_DISPLAY */
        NUBUS_DRSW_APPLE        = 0x0001,
        NUBUS_DRSW_APPLE_HIRES  = 0x0013, /* MacII HiRes card driver */
       
        /* NUBUS_CAT_NETWORK */
        NUBUS_DRSW_CABLETRON    = 0x0001,
        NUBUS_DRSW_SONIC_LC     = 0x0001,
        NUBUS_DRSW_KINETICS     = 0x0103,
        NUBUS_DRSW_ASANTE       = 0x0104,
        NUBUS_DRSW_DAYNA        = 0x010b,
        NUBUS_DRSW_FARALLON     = 0x010c,
        NUBUS_DRSW_APPLE_SN     = 0x010f,
        NUBUS_DRSW_DAYNA2       = 0x0115,
        NUBUS_DRSW_FOCUS        = 0x011a,
        NUBUS_DRSW_ASANTE_CS    = 0x011d, /* use asante SMC9194 driver */
        NUBUS_DRSW_DAYNA_LC     = 0x011e,

        /* NUBUS_CAT_CPU */
        NUBUS_DRSW_NONE         = 0x0000,
};

/* DrHW: Uniquely identifies the hardware interface to a board (or at
   least, it should...  some video cards are known to incorrectly
   identify themselves as Toby cards) */


/* Add known DrHW values here */
enum nubus_drhw {
        /* NUBUS_CAT_DISPLAY */
        NUBUS_DRHW_APPLE_TFB    = 0x0001, /* Toby frame buffer card */
        NUBUS_DRHW_APPLE_HRVC   = 0x0013, /* Mac II High Res Video card */
        NUBUS_DRHW_APPLE_RBV1   = 0x0018, /* IIci RBV video */
        NUBUS_DRHW_APPLE_MDC    = 0x0019, /* Macintosh Display Card */
        NUBUS_DRHW_APPLE_SONORA = 0x0022, /* Sonora built-in video */
        NUBUS_DRHW_APPLE_JET    = 0x0029, /* Jet framebuffer (DuoDock) */
        NUBUS_DRHW_APPLE_VALKYRIE = 0x002e,
        NUBUS_DRHW_THUNDER24    = 0x02cb, /* SuperMac Thunder/24 */
       
        /* NUBUS_CAT_NETWORK */
        NUBUS_DRHW_INTERLAN     = 0x0100,
        NUBUS_DRHW_SMC9194      = 0x0101,
        NUBUS_DRHW_KINETICS     = 0x0106,
        NUBUS_DRHW_CABLETRON    = 0x0109,
        NUBUS_DRHW_ASANTE_LC    = 0x010f,
        NUBUS_DRHW_SONIC        = 0x0110,
        NUBUS_DRHW_SONIC_NB     = 0x0118,
        NUBUS_DRHW_SONIC_LC     = 0x0119,
       
        /* NUBUS_CAT_COMMUNICATIONS */
        NUBUS_DRHW_DOVEFAX      = 0x0100,
};

/* Resource IDs: These are the identifiers for the various weird and
   wonderful tidbits of information that may or may not reside in the
   NuBus ROM directory. */

enum nubus_res_id {
        NUBUS_RESID_TYPE         = 0x0001,
        NUBUS_RESID_NAME         = 0x0002,
        NUBUS_RESID_ICON         = 0x0003,
        NUBUS_RESID_DRVRDIR      = 0x0004,
        NUBUS_RESID_LOADREC      = 0x0005,
        NUBUS_RESID_BOOTREC      = 0x0006,
        NUBUS_RESID_FLAGS        = 0x0007,
        NUBUS_RESID_HWDEVID      = 0x0008,
        NUBUS_RESID_MINOR_BASEOS = 0x000a,
        NUBUS_RESID_MINOR_LENGTH = 0x000b,
        NUBUS_RESID_MAJOR_BASEOS = 0x000c,
        NUBUS_RESID_MAJOR_LENGTH = 0x000d,
        NUBUS_RESID_CICN         = 0x000f,
        NUBUS_RESID_ICL8         = 0x0010,
        NUBUS_RESID_ICL4         = 0x0011,
};

/* Category-specific resources. */
enum nubus_board_res_id {
        NUBUS_RESID_BOARDID      = 0x0020,
        NUBUS_RESID_PRAMINITDATA = 0x0021,
        NUBUS_RESID_PRIMARYINIT  = 0x0022,
        NUBUS_RESID_TIMEOUTCONST = 0x0023,
        NUBUS_RESID_VENDORINFO   = 0x0024,
        NUBUS_RESID_BOARDFLAGS   = 0x0025,
        NUBUS_RESID_SECONDINIT   = 0x0026,

        /* Not sure why Apple put these next two in here */
        NUBUS_RESID_VIDNAMES     = 0x0041,
        NUBUS_RESID_VIDMODES     = 0x007e
};

/* Fields within the vendor info directory */
enum nubus_vendor_res_id {
        NUBUS_RESID_VEND_ID     = 0x0001,
        NUBUS_RESID_VEND_SERIAL = 0x0002,
        NUBUS_RESID_VEND_REV    = 0x0003,
        NUBUS_RESID_VEND_PART   = 0x0004,
        NUBUS_RESID_VEND_DATE   = 0x0005
};

enum nubus_net_res_id {
        NUBUS_RESID_MAC_ADDRESS  = 0x0080
};

enum nubus_cpu_res_id {
        NUBUS_RESID_MEMINFO      = 0x0081,
        NUBUS_RESID_ROMINFO      = 0x0082
};

enum nubus_display_res_id {
        NUBUS_RESID_GAMMADIR    = 0x0040,
        NUBUS_RESID_FIRSTMODE   = 0x0080,
        NUBUS_RESID_SECONDMODE  = 0x0081,
        NUBUS_RESID_THIRDMODE   = 0x0082,
        NUBUS_RESID_FOURTHMODE  = 0x0083,
        NUBUS_RESID_FIFTHMODE   = 0x0084,
        NUBUS_RESID_SIXTHMODE   = 0x0085
};

struct nubus_dir
{
        unsigned char *base;
        unsigned char *ptr;
        int done;
        int mask;
};

struct nubus_dirent
{
        unsigned char *base;
        unsigned char type;
        __u32 data;     /* Actually 24bits used */
        int mask;
};

struct nubus_board {
        struct nubus_board* next;
        struct nubus_dev* first_dev;
       
        /* Only 9-E actually exist, though 0-8 are also theoretically
           possible, and 0 is a special case which represents the
           motherboard and onboard peripherals (Ethernet, video) */

        int slot;
        /* For slot 0, this is bogus. */
        char name[64];

        /* Format block */
        unsigned char* fblock;
        /* Root directory (does *not* always equal fblock + doffset!) */
        unsigned char* directory;
       
        unsigned long slot_addr;
        /* Offset to root directory (sometimes) */
        unsigned long doffset;
        /* Length over which to compute the crc */
        unsigned long rom_length;
        /* Completely useless most of the time */
        unsigned long crc;
        unsigned char rev;
        unsigned char format;
        unsigned char lanes;
};

struct nubus_dev {
        /* Next link in device list */
        struct nubus_dev* next;
        /* Directory entry in /proc/bus/nubus */
        struct proc_dir_entry* procdir;

        /* The functional resource ID of this device */
        unsigned char resid;
        /* These are mostly here for convenience; we could always read
           them from the ROMs if we wanted to */

        unsigned short category;
        unsigned short type;
        unsigned short dr_sw;
        unsigned short dr_hw;
        /* This is the device's name rather than the board's.
           Sometimes they are different.  Usually the board name is
           more correct. */

        char name[64];
        /* MacOS driver (I kid you not) */
        unsigned char* driver;
        /* Actually this is an offset */
        unsigned long iobase;
        unsigned long iosize;
        unsigned char flags, hwdevid;
       
        /* Functional directory */
        unsigned char* directory;
        /* Much of our info comes from here */
        struct nubus_board* board;
};

/* This is all NuBus devices (used to find devices later on) */
extern struct nubus_dev* nubus_devices;
/* This is all NuBus cards */
extern struct nubus_board* nubus_boards;

/* Generic NuBus interface functions, modelled after the PCI interface */
void nubus_scan_bus(void);
extern void nubus_proc_init(void);
int get_nubus_list(char *buf);
int nubus_proc_attach_device(struct nubus_dev *dev);
int nubus_proc_detach_device(struct nubus_dev *dev);
/* If we need more precision we can add some more of these */
struct nubus_dev* nubus_find_device(unsigned short category,
                                    unsigned short type,
                                    unsigned short dr_hw,
                                    unsigned short dr_sw,
                                    const struct nubus_dev* from);
struct nubus_dev* nubus_find_type(unsigned short category,
                                  unsigned short type,
                                  const struct nubus_dev* from);
/* Might have more than one device in a slot, you know... */
struct nubus_dev* nubus_find_slot(unsigned int slot,
                                  const struct nubus_dev* from);

/* These are somewhat more NuBus-specific.  They all return 0 for
   success and -1 for failure, as you'd expect. */


/* The root directory which contains the board and functional
   directories */

int nubus_get_root_dir(const struct nubus_board* board,
                       struct nubus_dir* dir);
/* The board directory */
int nubus_get_board_dir(const struct nubus_board* board,
                        struct nubus_dir* dir);
/* The functional directory */
int nubus_get_func_dir(const struct nubus_dev* dev,
                       struct nubus_dir* dir);

/* These work on any directory gotten via the above */
int nubus_readdir(struct nubus_dir* dir,
                  struct nubus_dirent* ent);
int nubus_find_rsrc(struct nubus_dir* dir,
                    unsigned char rsrc_type,
                    struct nubus_dirent* ent);
int nubus_rewinddir(struct nubus_dir* dir);

/* Things to do with directory entries */
int nubus_get_subdir(const struct nubus_dirent* ent,
                     struct nubus_dir* dir);
void nubus_get_rsrc_mem(void* dest,
                        const struct nubus_dirent *dirent,
                        int len);
void nubus_get_rsrc_str(void* dest,
                        const struct nubus_dirent *dirent,
                        int maxlen);

/* We'd like to get rid of this eventually.  Only daynaport.c uses it now. */
static inline void *nubus_slot_addr(int slot)
{
        return (void *)(0xF0000000|(slot<<24));
}

#endif /* LINUX_NUBUS_H */