* 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
+ * This goes with arch/m68k/hp300/dio.c
*/
#ifndef _LINUX_DIO_H
* 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_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 */
+
+/* The internal HPIB device is special; this is its physaddr; its select code is 7.
+ * The reason why we have to treat it specially is because apparently it's broken:
+ * the device ID isn't consistent/reliable. *sigh*
+ */
+#define DIO_IHPIBADDR 0x47800
+#define DIO_IHPIBSCODE 7
+
+/* If we don't have the internal HPIB defined, then treat select code 7 like
+ * any other. If we *do* have internal HPIB, then we just have to assume that
+ * select code 7 is the internal HPIB regardless of the ID register :-<
+ */
+#define CONFIG_IHPIB /* hack hack : not yet a proper config option */
+#ifdef CONFIG_IHPIB
+#define DIO_ISIHPIB(scode) ((scode) == DIO_IHPIBSCODE)
+#else
+#define DIO_ISIHPIB(scode) 0
+#endif
+
+#define DIO_VIRADDRBASE 0xf0000000 /* vir addr where IOspace is mapped */
#define DIO_BASE 0x600000 /* start of DIO space */
#define DIO_END 0x1000000 /* end of DIO space */
/* 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 DIO_SCMAX 32
#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)
* 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))
+#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_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_ID_NHPIB 0x80 /* 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_IHPIB 0x00 /* internal HPIB (not its real ID, it hasn't got one! */
+#define DIO_DESC_IHPIB "internal HPIB"
+#define DIO_ID_SCSI0 0x07 /* 98625A SCSI */
+#define DIO_DESC_SCSI0 "98625A SCSI0"
#define DIO_ID_SCSI1 0x27 /* ditto */
-#define DIO_DESC_SCSI1 "98265A SCSI1"
+#define DIO_DESC_SCSI1 "98625A SCSI1"
#define DIO_ID_SCSI2 0x47 /* ditto */
-#define DIO_DESC_SCSI2 "98265A SCSI2"
+#define DIO_DESC_SCSI2 "98625A SCSI2"
#define DIO_ID_SCSI3 0x67 /* ditto */
-#define DIO_DESC_SCSI3 "98265A SCSI3"
+#define DIO_DESC_SCSI3 "98625A 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 :-> */
*/
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);
+extern void *dio_scodetoviraddr(int scode);
+extern int dio_scodetoipl(int scode);
+extern const char *dio_scodetoname(int scode);
+extern void dio_config_board(int scode);
+extern void dio_unconfig_board(int scode);
- return rc;
-}
#endif /* __KERNEL__ */
#endif /* ndef _LINUX_DIO_H */
git://git.onelab.eu / linux-2.6.git / blobdiff