diff options
Diffstat (limited to 'i386/i386/iopb.h')
-rw-r--r-- | i386/i386/iopb.h | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/i386/i386/iopb.h b/i386/i386/iopb.h deleted file mode 100644 index 0a3e574..0000000 --- a/i386/i386/iopb.h +++ /dev/null @@ -1,62 +0,0 @@ -/* - * Mach Operating System - * Copyright (c) 1991,1990 Carnegie Mellon University - * All Rights Reserved. - * - * Permission to use, copy, modify and distribute this software and its - * documentation is hereby granted, provided that both the copyright - * notice and this permission notice appear in all copies of the - * software, derivative works or modified versions, and any portions - * thereof, and that both notices appear in supporting documentation. - * - * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" - * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR - * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * - * Carnegie Mellon requests users of this software to return to - * - * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU - * School of Computer Science - * Carnegie Mellon University - * Pittsburgh PA 15213-3890 - * - * any improvements or extensions that they make and grant Carnegie Mellon - * the rights to redistribute these changes. - */ - -#ifndef _I386_IOPB_H_ -#define _I386_IOPB_H_ - -#include <i386/tss.h> -#include <kern/queue.h> - -/* - * IO permission bitmap. - * - * Allows only IO ports 0 .. 0x3ff: for ISA machines. - */ - -#define iopb_howmany(a,b) (((a)+(b)-1)/(b)) - -#define IOPB_MAX 0xffff /* ISA bus allows ports 0..3ff */ - /* but accelerator cards are funky */ -#define IOPB_BYTES (iopb_howmany(IOPB_MAX+1,8)) - -typedef unsigned char isa_iopb[IOPB_BYTES]; - -/* - * An IO permission map is a task segment with an IO permission bitmap. - */ - -struct iopb_tss { - struct i386_tss tss; /* task state segment */ - isa_iopb bitmap; /* bitmap of mapped IO ports */ - unsigned int barrier; /* bitmap barrier for CPU slop */ - queue_head_t io_port_list; /* list of mapped IO ports */ - int iopb_desc[2]; /* descriptor for this TSS */ -}; - -typedef struct iopb_tss *iopb_tss_t; - -#endif /* _I386_IOPB_H_ */ - |