patch-2.4.19 linux-2.4.19/include/asm-ia64/sn/iobus.h

• Lines: 186
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.18/include/asm-ia64/sn/iobus.h
• Orig date: Thu Jan 4 13:00:15 2001

diff -urN linux-2.4.18/include/asm-ia64/sn/iobus.h linux-2.4.19/include/asm-ia64/sn/iobus.h
@@ -1,185 +0,0 @@
-/* $Id$
- *
- * 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.
- *
- * Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc.
- * Copyright (C) 2000 by Colin Ngam
- */
-#ifndef _ASM_SN_IOBUS_H
-#define _ASM_SN_IOBUS_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct eframe_s;
-struct piomap;
-struct dmamap;
-
-
-/* for ilvl_t interrupt level, for use with intr_block_level.  Can't
- * typedef twice without causing warnings, and some users of this header
- * file do not already include driver.h, but expect ilvl_t to be defined,
- * while others include both, leading to the warning ...
- */
-
-#include <asm/types.h>
-#include <asm/sn/driver.h>
-
-
-typedef __psunsigned_t iobush_t;
-
-#if __KERNEL__
-/* adapter handle */
-typedef devfs_handle_t adap_t;
-#endif
-
-
-/* interrupt function */
-typedef void	       *intr_arg_t;
-typedef void		intr_func_f(intr_arg_t);
-typedef intr_func_f    *intr_func_t;
-
-#define	INTR_ARG(n)	((intr_arg_t)(__psunsigned_t)(n))
-
-/* system interrupt resource handle -- returned from intr_alloc */
-typedef struct intr_s *intr_t;
-#define INTR_HANDLE_NONE ((intr_t)0)
-
-/*
- * restore interrupt level value, returned from intr_block_level
- * for use with intr_unblock_level.
- */
-typedef void *rlvl_t;
-
-
-/* 
- * A basic, platform-independent description of I/O requirements for
- * a device. This structure is usually formed by lboot based on information 
- * in configuration files.  It contains information about PIO, DMA, and
- * interrupt requirements for a specific instance of a device.
- *
- * The pio description is currently unused.
- *
- * The dma description describes bandwidth characteristics and bandwidth
- * allocation requirements. (TBD)
- *
- * The Interrupt information describes the priority of interrupt, desired 
- * destination, policy (TBD), whether this is an error interrupt, etc.  
- * For now, interrupts are targeted to specific CPUs.
- */
-
-typedef struct device_desc_s {
-	/* pio description (currently none) */
-
-	/* dma description */
-	/* TBD: allocated badwidth requirements */
-
-	/* interrupt description */
-	devfs_handle_t	intr_target;	/* Hardware locator string */
-	int 		intr_policy;	/* TBD */
-	ilvl_t		intr_swlevel;	/* software level for blocking intr */
-	char		*intr_name;	/* name of interrupt, if any */
-
-	int		flags;
-} *device_desc_t;
-
-/* flag values */
-#define	D_INTR_ISERR	0x1		/* interrupt is for error handling */
-#define D_IS_ASSOC	0x2		/* descriptor is associated with a dev */
-#define D_INTR_NOTHREAD	0x4		/* Interrupt handler isn't threaded. */
-
-#define INTR_SWLEVEL_NOTHREAD_DEFAULT 	0	/* Default
-						 * Interrupt level in case of
-						 * non-threaded interrupt 
-						 * handlers
-						 */
-/* 
- * Drivers use these interfaces to manage device descriptors.
- *
- * To examine defaults:
- *	desc = device_desc_default_get(dev);
- *	device_desc_*_get(desc);
- *
- * To modify defaults:
- *	desc = device_desc_default_get(dev);
- *	device_desc_*_set(desc);
- *
- * To eliminate defaults:
- *	device_desc_default_set(dev, NULL);
- *
- * To override defaults:
- *	desc = device_desc_dup(dev);
- *	device_desc_*_set(desc,...);
- *	use device_desc in calls
- *	device_desc_free(desc);
- *
- * Software must not set or eliminate default device descriptors for a device while
- * concurrently get'ing, dup'ing or using them.  Default device descriptors can be 
- * changed only for a device that is quiescent.  In general, device drivers have no
- * need to permanently change defaults anyway -- they just override defaults, when
- * necessary.
- */
-extern device_desc_t	device_desc_dup(devfs_handle_t dev);
-extern void		device_desc_free(device_desc_t device_desc);
-extern device_desc_t	device_desc_default_get(devfs_handle_t dev);
-extern void		device_desc_default_set(devfs_handle_t dev, device_desc_t device_desc);
-
-extern devfs_handle_t	device_desc_intr_target_get(device_desc_t device_desc);
-extern int		device_desc_intr_policy_get(device_desc_t device_desc);
-extern ilvl_t		device_desc_intr_swlevel_get(device_desc_t device_desc);
-extern char *		device_desc_intr_name_get(device_desc_t device_desc);
-extern int		device_desc_flags_get(device_desc_t device_desc);
-
-extern void		device_desc_intr_target_set(device_desc_t device_desc, devfs_handle_t target);
-extern void		device_desc_intr_policy_set(device_desc_t device_desc, int policy);
-extern void		device_desc_intr_swlevel_set(device_desc_t device_desc, ilvl_t swlevel);
-extern void		device_desc_intr_name_set(device_desc_t device_desc, char *name);
-extern void		device_desc_flags_set(device_desc_t device_desc, int flags);
-
-
-/* IO state */
-#ifdef COMMENT
-#define IO_STATE_EMPTY			0x01	/* non-existent */
-#define IO_STATE_INITIALIZING		0x02	/* being initialized */
-#define IO_STATE_ATTACHING   		0x04    /* becoming active */
-#define IO_STATE_ACTIVE      		0x08    /* active */
-#define IO_STATE_DETACHING   		0x10    /* becoming inactive */
-#define IO_STATE_INACTIVE    		0x20    /* not in use */
-#define IO_STATE_ERROR			0x40    /* problems */
-#define IO_STATE_BAD_HARDWARE		0x80	/* broken hardware */
-#endif
-
-struct edt;
-
-
-/* return codes */
-#define RC_OK				0	
-#define RC_ERROR			1
-
-/* bus configuration management op code */
-#define IOBUS_CONFIG_ATTACH		0	/* vary on */
-#define IOBUS_CONFIG_DETACH		1	/* vary off */
-#define IOBUS_CONFIG_RECOVER		2	/* clear error then vary on */
-
-/* get low-level PIO handle */
-extern int pio_geth(struct piomap*, int bus, int bus_id, int subtype, 
-	iopaddr_t addr, int size);	
-
-/* get low-level DMA handle */
-extern int dma_geth(struct dmamap*, int bus_type, int bus_id, int dma_type, 
-	int npages, int page_size, int flags);	
-
-#ifdef __cplusplus
-}
-#endif
-
-/*
- * Macros for page number and page offsets, using ps as page size
- */
-#define x_pnum(addr, ps) ((__psunsigned_t)(addr) / (__psunsigned_t)(ps))
-#define x_poff(addr, ps) ((__psunsigned_t)(addr) & ((__psunsigned_t)(ps) - 1))
-
-#endif /* _ASM_SN_IOBUS_H */