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/* 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 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(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. If we add DIO-II support this should become
* 256 for everything except HP320, which only has DIO.
*/
#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 void 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 *);
extern const struct dio_device_id *dio_match_device(const struct dio_device_id *ids, const struct dio_dev *z);
static inline struct dio_driver *dio_dev_driver(const struct dio_dev *d)
{
return d->driver;
}
#define dio_resource_start(d) ((d)->resource.start)
#define dio_resource_end(d) ((d)->resource.end)
#define dio_resource_len(d) ((d)->resource.end-(d)->resource.start+1)
#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);
}
/*
* A helper function which helps ensure correct dio_driver
* setup and cleanup for commonly-encountered hotplug/modular cases
*
* This MUST stay in a header, as it checks for -DMODULE
*/
static inline int dio_module_init(struct dio_driver *drv)
{
int rc = dio_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 DIO driver instance
* and return some sort of error */
dio_unregister_driver(drv);
return rc;
}
#endif /* __KERNEL__ */
#endif /* ndef _LINUX_DIO_H */
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