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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275/* SPDX-License-Identifier: GPL-2.0 *//* header file for DIO boards for the HP300 architecture. * Maybe this should handle DIO-II later? * The general structure of this is vaguely based on how * the Amiga port handles Zorro boards. * Copyright (C) Peter Maydell 05/1998 <pmaydell@chiark.greenend.org.uk> * Converted to driver model Jochen Friedrich <jochen@scram.de> * * The board IDs are from the NetBSD kernel, which for once provided * helpful comments... * * This goes with drivers/dio/dio.c */
#ifndef _LINUX_DIO_H#define _LINUX_DIO_H
/* The DIO boards in a system are distinguished by 'select codes' which * range from 0-63 (DIO) and 132-255 (DIO-II). * The DIO board with select code sc is located at physical address * 0x600000 + sc * 0x10000 * So DIO cards cover [0x600000-0x800000); the areas [0x200000-0x400000) and * [0x800000-0x1000000) are for additional space required by things * like framebuffers. [0x400000-0x600000) is for miscellaneous internal I/O. * On Linux, this is currently all mapped into the virtual address space * at 0xf0000000 on bootup. * DIO-II boards are at 0x1000000 + (sc - 132) * 0x400000 * which is address range [0x1000000-0x20000000) -- too big to map completely, * so currently we just don't handle DIO-II boards. It wouldn't be hard to * do with ioremap() though. */
#include <linux/device.h>
#ifdef __KERNEL__
#include <asm/hp300hw.h>
typedef __u16 dio_id;
/* * DIO devices */
struct dio_dev { struct dio_bus *bus; dio_id id; int scode; struct dio_driver *driver; /* which driver has allocated this device */ struct device dev; /* Generic device interface */ u8 ipl; char name[64]; struct resource resource;};
#define to_dio_dev(n) container_of(n, struct dio_dev, dev)
/* * DIO bus */
struct dio_bus { struct list_head devices; /* list of devices on this bus */ unsigned int num_resources; /* number of resources */ struct resource resources[2]; /* address space routed to this bus */ struct device dev; char name[10];};
extern struct dio_bus dio_bus; /* Single DIO bus */extern const struct bus_type dio_bus_type;
/* * DIO device IDs */
struct dio_device_id { dio_id id; /* Device ID or DIO_WILDCARD */ unsigned long driver_data; /* Data private to the driver */};
/* * DIO device drivers */
struct dio_driver { struct list_head node; char *name; const struct dio_device_id *id_table; /* NULL if wants all devices */ int (*probe)(struct dio_dev *z, const struct dio_device_id *id);/* New device inserted */ void (*remove)(struct dio_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */ struct device_driver driver;};
#define to_dio_driver(drv) container_of_const(drv, struct dio_driver, driver)
/* DIO/DIO-II boards all have the following 8bit registers. * These are offsets from the base of the device. */#define DIO_IDOFF 0x01 /* primary device ID */#define DIO_IPLOFF 0x03 /* interrupt priority level */#define DIO_SECIDOFF 0x15 /* secondary device ID */#define DIOII_SIZEOFF 0x101 /* device size, DIO-II only */#define DIO_VIRADDRBASE 0xf0000000UL /* vir addr where IOspace is mapped */
#define DIO_BASE 0x600000 /* start of DIO space */#define DIO_END 0x1000000 /* end of DIO space */#define DIO_DEVSIZE 0x10000 /* size of a DIO device */
#define DIOII_BASE 0x01000000 /* start of DIO-II space */#define DIOII_END 0x20000000 /* end of DIO-II space */#define DIOII_DEVSIZE 0x00400000 /* size of a DIO-II device */
/* highest valid select code */#define DIO_SCMAX (hp300_model == HP_320 ? 32 : 256)#define DIOII_SCBASE 132 /* lowest DIO-II select code */#define DIO_SCINHOLE(scode) (((scode) >= 32) && ((scode) < DIOII_SCBASE))#define DIO_ISDIOII(scode) ((scode) >= 132 && (scode) < 256)
/* macros to read device IDs, given base address */#define DIO_ID(baseaddr) in_8((baseaddr) + DIO_IDOFF)#define DIO_SECID(baseaddr) in_8((baseaddr) + DIO_SECIDOFF)
/* extract the interrupt level */#define DIO_IPL(baseaddr) (((in_8((baseaddr) + DIO_IPLOFF) >> 4) & 0x03) + 3)
/* find the size of a DIO-II board's address space. * DIO boards are all fixed length. */#define DIOII_SIZE(baseaddr) ((in_8((baseaddr) + DIOII_SIZEOFF) + 1) * 0x100000)
/* general purpose macro for both DIO and DIO-II */#define DIO_SIZE(scode, base) (DIO_ISDIOII((scode)) ? DIOII_SIZE((base)) : DIO_DEVSIZE)
/* The hardware has primary and secondary IDs; we encode these in a single * int as PRIMARY ID & (SECONDARY ID << 8). * In practice this is only important for framebuffers, * and everybody else just sets ID fields equal to the DIO_ID_FOO value. */#define DIO_ENCODE_ID(pr,sec) ((((int)sec & 0xff) << 8) | ((int)pr & 0xff))/* macro to determine whether a given primary ID requires a secondary ID byte */#define DIO_NEEDSSECID(id) ((id) == DIO_ID_FBUFFER)#define DIO_WILDCARD 0xff
/* Now a whole slew of macros giving device IDs and descriptive strings: */#define DIO_ID_DCA0 0x02 /* 98644A serial */#define DIO_DESC_DCA0 "98644A DCA0 serial"#define DIO_ID_DCA0REM 0x82 /* 98644A serial */#define DIO_DESC_DCA0REM "98644A DCA0REM serial"#define DIO_ID_DCA1 0x42 /* 98644A serial */#define DIO_DESC_DCA1 "98644A DCA1 serial"#define DIO_ID_DCA1REM 0xc2 /* 98644A serial */#define DIO_DESC_DCA1REM "98644A DCA1REM serial"#define DIO_ID_DCM 0x05 /* 98642A serial MUX */#define DIO_DESC_DCM "98642A DCM serial MUX"#define DIO_ID_DCMREM 0x85 /* 98642A serial MUX */#define DIO_DESC_DCMREM "98642A DCMREM serial MUX"#define DIO_ID_LAN 0x15 /* 98643A LAN */#define DIO_DESC_LAN "98643A LANCE ethernet"#define DIO_ID_FHPIB 0x08 /* 98625A/98625B fast HP-IB */#define DIO_DESC_FHPIB "98625A/98625B fast HPIB"#define DIO_ID_NHPIB 0x01 /* 98624A HP-IB (normal ie slow) */#define DIO_DESC_NHPIB "98624A HPIB"#define DIO_ID_SCSI0 0x07 /* 98265A SCSI */#define DIO_DESC_SCSI0 "98265A SCSI0"#define DIO_ID_SCSI1 0x27 /* ditto */#define DIO_DESC_SCSI1 "98265A SCSI1"#define DIO_ID_SCSI2 0x47 /* ditto */#define DIO_DESC_SCSI2 "98265A SCSI2"#define DIO_ID_SCSI3 0x67 /* ditto */#define DIO_DESC_SCSI3 "98265A SCSI3"#define DIO_ID_FBUFFER 0x39 /* framebuffer: flavour is distinguished by secondary ID */#define DIO_DESC_FBUFFER "bitmapped display"/* the NetBSD kernel source is a bit unsure as to what these next IDs actually do :-> */#define DIO_ID_MISC0 0x03 /* 98622A */#define DIO_DESC_MISC0 "98622A"#define DIO_ID_MISC1 0x04 /* 98623A */#define DIO_DESC_MISC1 "98623A"#define DIO_ID_PARALLEL 0x06 /* internal parallel */#define DIO_DESC_PARALLEL "internal parallel"#define DIO_ID_MISC2 0x09 /* 98287A keyboard */#define DIO_DESC_MISC2 "98287A keyboard"#define DIO_ID_MISC3 0x0a /* HP98635A FP accelerator */#define DIO_DESC_MISC3 "HP98635A FP accelerator"#define DIO_ID_MISC4 0x0b /* timer */#define DIO_DESC_MISC4 "timer"#define DIO_ID_MISC5 0x12 /* 98640A */#define DIO_DESC_MISC5 "98640A"#define DIO_ID_MISC6 0x16 /* 98659A */#define DIO_DESC_MISC6 "98659A"#define DIO_ID_MISC7 0x19 /* 237 display */#define DIO_DESC_MISC7 "237 display"#define DIO_ID_MISC8 0x1a /* quad-wide card */#define DIO_DESC_MISC8 "quad-wide card"#define DIO_ID_MISC9 0x1b /* 98253A */#define DIO_DESC_MISC9 "98253A"#define DIO_ID_MISC10 0x1c /* 98627A */#define DIO_DESC_MISC10 "98253A"#define DIO_ID_MISC11 0x1d /* 98633A */#define DIO_DESC_MISC11 "98633A"#define DIO_ID_MISC12 0x1e /* 98259A */#define DIO_DESC_MISC12 "98259A"#define DIO_ID_MISC13 0x1f /* 8741 */#define DIO_DESC_MISC13 "8741"#define DIO_ID_VME 0x31 /* 98577A VME adapter */#define DIO_DESC_VME "98577A VME adapter"#define DIO_ID_DCL 0x34 /* 98628A serial */#define DIO_DESC_DCL "98628A DCL serial"#define DIO_ID_DCLREM 0xb4 /* 98628A serial */#define DIO_DESC_DCLREM "98628A DCLREM serial"/* These are the secondary IDs for the framebuffers */#define DIO_ID2_GATORBOX 0x01 /* 98700/98710 "gatorbox" */#define DIO_DESC2_GATORBOX "98700/98710 \"gatorbox\" display"#define DIO_ID2_TOPCAT 0x02 /* 98544/98545/98547 "topcat" */#define DIO_DESC2_TOPCAT "98544/98545/98547 \"topcat\" display"#define DIO_ID2_RENAISSANCE 0x04 /* 98720/98721 "renaissance" */#define DIO_DESC2_RENAISSANCE "98720/98721 \"renaissance\" display"#define DIO_ID2_LRCATSEYE 0x05 /* lowres "catseye" */#define DIO_DESC2_LRCATSEYE "low-res catseye display"#define DIO_ID2_HRCCATSEYE 0x06 /* highres colour "catseye" */#define DIO_DESC2_HRCCATSEYE "high-res color catseye display"#define DIO_ID2_HRMCATSEYE 0x07 /* highres mono "catseye" */#define DIO_DESC2_HRMCATSEYE "high-res mono catseye display"#define DIO_ID2_DAVINCI 0x08 /* 98730/98731 "davinci" */#define DIO_DESC2_DAVINCI "98730/98731 \"davinci\" display"#define DIO_ID2_XXXCATSEYE 0x09 /* "catseye" */#define DIO_DESC2_XXXCATSEYE "catseye display"#define DIO_ID2_HYPERION 0x0e /* A1096A "hyperion" */#define DIO_DESC2_HYPERION "A1096A \"hyperion\" display"#define DIO_ID2_XGENESIS 0x0b /* "x-genesis"; no NetBSD support */#define DIO_DESC2_XGENESIS "\"x-genesis\" display"#define DIO_ID2_TIGER 0x0c /* "tiger"; no NetBSD support */#define DIO_DESC2_TIGER "\"tiger\" display"#define DIO_ID2_YGENESIS 0x0d /* "y-genesis"; no NetBSD support */#define DIO_DESC2_YGENESIS "\"y-genesis\" display"/* if you add new IDs then you should tell dio.c about them so it can * identify them... */
extern int dio_find(int deviceid);extern unsigned long dio_scodetophysaddr(int scode);extern int dio_create_sysfs_dev_files(struct dio_dev *);
/* New-style probing */extern int dio_register_driver(struct dio_driver *);extern void dio_unregister_driver(struct dio_driver *);
#define dio_resource_start(d) ((d)->resource.start)#define dio_resource_end(d) ((d)->resource.end)#define dio_resource_len(d) (resource_size(&(d)->resource))#define dio_resource_flags(d) ((d)->resource.flags)
#define dio_request_device(d, name) \ request_mem_region(dio_resource_start(d), dio_resource_len(d), name)#define dio_release_device(d) \ release_mem_region(dio_resource_start(d), dio_resource_len(d))
/* Similar to the helpers above, these manipulate per-dio_dev * driver-specific data. They are really just a wrapper around * the generic device structure functions of these calls. */static inline void *dio_get_drvdata (struct dio_dev *d){ return dev_get_drvdata(&d->dev);}
static inline void dio_set_drvdata (struct dio_dev *d, void *data){ dev_set_drvdata(&d->dev, data);}
#endif /* __KERNEL__ */#endif /* ndef _LINUX_DIO_H */