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Diffstat (limited to 'include/linux/zorro.h')
| -rw-r--r-- | include/linux/zorro.h | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/include/linux/zorro.h b/include/linux/zorro.h new file mode 100644 index 00000000000..ba5b72768bb --- /dev/null +++ b/include/linux/zorro.h @@ -0,0 +1,329 @@ +/* + * 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 */ |