diff options
Diffstat (limited to 'i386/i386at/gpl/linux/linux_port.c')
-rw-r--r-- | i386/i386at/gpl/linux/linux_port.c | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/i386/i386at/gpl/linux/linux_port.c b/i386/i386at/gpl/linux/linux_port.c deleted file mode 100644 index 4a79c499..00000000 --- a/i386/i386at/gpl/linux/linux_port.c +++ /dev/null @@ -1,79 +0,0 @@ -/* - * Linux I/O port management. - * Copyright (C) 1995 Shantanu Goel. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/ioport.h> - -#define NPORTS 65536 -#define BITS_PER_WORD 32 -#define NWORDS (NPORTS / BITS_PER_WORD) - -/* - * This bitmap keeps track of all allocated ports. - * A bit is set if the port has been allocated. - */ -static unsigned port_bitmap[NWORDS]; - -void snarf_region(unsigned, unsigned); - -/* - * Check if a region is available for use. - */ -int -check_region(unsigned port, unsigned size) -{ - unsigned i; - - for (i = port; i < port + size; i++) - if (port_bitmap[i/BITS_PER_WORD] & (1 << (i%BITS_PER_WORD))) - return (1); - return (0); -} - -/* - * Allocate a region. - */ -void -request_region(unsigned port, unsigned size, const char *name) -{ - unsigned i; - - for (i = port; i < port + size; i++) - port_bitmap[i / BITS_PER_WORD] |= 1 << (i % BITS_PER_WORD); -} - -/* - * For compatibility with older kernels. - */ -void -snarf_region(unsigned port, unsigned size) -{ - request_region(port, size, 0); -} - -/* - * Deallocate a region. - */ -void -release_region(unsigned port, unsigned size) -{ - unsigned i; - - for (i = port; i < port + size; i++) - port_bitmap[i / BITS_PER_WORD] &= ~(1 << (i % BITS_PER_WORD)); -} |