1 /* 2 * Copyright 2010 Tilera Corporation. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation, version 2. 7 * 8 * This program is distributed in the hope that it will be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 11 * NON INFRINGEMENT. See the GNU General Public License for 12 * more details. 13 * 14 * Provide methods for the HARDWALL_FILE for accessing the UDN. 15 */ 16 17 #ifndef _ASM_TILE_HARDWALL_H 18 #define _ASM_TILE_HARDWALL_H 19 20 #include <linux/ioctl.h> 21 22 #define HARDWALL_IOCTL_BASE 0xa2 23 24 /* 25 * The HARDWALL_CREATE() ioctl is a macro with a "size" argument. 26 * The resulting ioctl value is passed to the kernel in conjunction 27 * with a pointer to a little-endian bitmask of cpus, which must be 28 * physically in a rectangular configuration on the chip. 29 * The "size" is the number of bytes of cpu mask data. 30 */ 31 #define _HARDWALL_CREATE 1 32 #define HARDWALL_CREATE(size) \ 33 _IOC(_IOC_READ, HARDWALL_IOCTL_BASE, _HARDWALL_CREATE, (size)) 34 35 #define _HARDWALL_ACTIVATE 2 36 #define HARDWALL_ACTIVATE \ 37 _IO(HARDWALL_IOCTL_BASE, _HARDWALL_ACTIVATE) 38 39 #define _HARDWALL_DEACTIVATE 3 40 #define HARDWALL_DEACTIVATE \ 41 _IO(HARDWALL_IOCTL_BASE, _HARDWALL_DEACTIVATE) 42 43 #ifndef __KERNEL__ 44 45 /* This is the canonical name expected by userspace. */ 46 #define HARDWALL_FILE "/dev/hardwall" 47 48 #else 49 50 /* Hook for /proc/tile/hardwall. */ 51 struct seq_file; 52 int proc_tile_hardwall_show(struct seq_file *sf, void *v); 53 54 #endif 55 56 #endif /* _ASM_TILE_HARDWALL_H */ 57