cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

grulib.h (4008B)

      1/*
      2 *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
      3 *
      4 *  This program is free software; you can redistribute it and/or modify
      5 *  it under the terms of the GNU Lesser General Public License as published by
      6 *  the Free Software Foundation; either version 2.1 of the License, or
      7 *  (at your option) any later version.
      8 *
      9 *  This program is distributed in the hope that it will be useful,
     10 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     12 *  GNU Lesser General Public License for more details.
     13 *
     14 *  You should have received a copy of the GNU Lesser General Public License
     15 *  along with this program; if not, write to the Free Software
     16 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
     17 */
     18
     19#ifndef __GRULIB_H__
     20#define __GRULIB_H__
     21
     22#define GRU_BASENAME		"gru"
     23#define GRU_FULLNAME		"/dev/gru"
     24#define GRU_IOCTL_NUM 		 'G'
     25
     26/*
     27 * Maximum number of GRU segments that a user can have open
     28 * ZZZ temp - set high for testing. Revisit.
     29 */
     30#define GRU_MAX_OPEN_CONTEXTS		32
     31
     32/* Set Number of Request Blocks */
     33#define GRU_CREATE_CONTEXT		_IOWR(GRU_IOCTL_NUM, 1, void *)
     34
     35/*  Set Context Options */
     36#define GRU_SET_CONTEXT_OPTION		_IOWR(GRU_IOCTL_NUM, 4, void *)
     37
     38/* Fetch exception detail */
     39#define GRU_USER_GET_EXCEPTION_DETAIL	_IOWR(GRU_IOCTL_NUM, 6, void *)
     40
     41/* For user call_os handling - normally a TLB fault */
     42#define GRU_USER_CALL_OS		_IOWR(GRU_IOCTL_NUM, 8, void *)
     43
     44/* For user unload context */
     45#define GRU_USER_UNLOAD_CONTEXT		_IOWR(GRU_IOCTL_NUM, 9, void *)
     46
     47/* For dumpping GRU chiplet state */
     48#define GRU_DUMP_CHIPLET_STATE		_IOWR(GRU_IOCTL_NUM, 11, void *)
     49
     50/* For getting gseg statistics */
     51#define GRU_GET_GSEG_STATISTICS		_IOWR(GRU_IOCTL_NUM, 12, void *)
     52
     53/* For user TLB flushing (primarily for tests) */
     54#define GRU_USER_FLUSH_TLB		_IOWR(GRU_IOCTL_NUM, 50, void *)
     55
     56/* Get some config options (primarily for tests & emulator) */
     57#define GRU_GET_CONFIG_INFO		_IOWR(GRU_IOCTL_NUM, 51, void *)
     58
     59/* Various kernel self-tests */
     60#define GRU_KTEST			_IOWR(GRU_IOCTL_NUM, 52, void *)
     61
     62#define CONTEXT_WINDOW_BYTES(th)        (GRU_GSEG_PAGESIZE * (th))
     63#define THREAD_POINTER(p, th)		(p + GRU_GSEG_PAGESIZE * (th))
     64#define GSEG_START(cb)			((void *)((unsigned long)(cb) & ~(GRU_GSEG_PAGESIZE - 1)))
     65
     66struct gru_get_gseg_statistics_req {
     67	unsigned long			gseg;
     68	struct gru_gseg_statistics	stats;
     69};
     70
     71/*
     72 * Structure used to pass TLB flush parameters to the driver
     73 */
     74struct gru_create_context_req {
     75	unsigned long		gseg;
     76	unsigned int		data_segment_bytes;
     77	unsigned int		control_blocks;
     78	unsigned int		maximum_thread_count;
     79	unsigned int		options;
     80	unsigned char		tlb_preload_count;
     81};
     82
     83/*
     84 * Structure used to pass unload context parameters to the driver
     85 */
     86struct gru_unload_context_req {
     87	unsigned long	gseg;
     88};
     89
     90/*
     91 * Structure used to set context options
     92 */
     93enum {sco_gseg_owner, sco_cch_req_slice, sco_blade_chiplet};
     94struct gru_set_context_option_req {
     95	unsigned long	gseg;
     96	int		op;
     97	int		val0;
     98	long		val1;
     99};
    100
    101/*
    102 * Structure used to pass TLB flush parameters to the driver
    103 */
    104struct gru_flush_tlb_req {
    105	unsigned long	gseg;
    106	unsigned long	vaddr;
    107	size_t		len;
    108};
    109
    110/*
    111 * Structure used to pass TLB flush parameters to the driver
    112 */
    113enum {dcs_pid, dcs_gid};
    114struct gru_dump_chiplet_state_req {
    115	unsigned int	op;
    116	unsigned int	gid;
    117	int		ctxnum;
    118	char		data_opt;
    119	char		lock_cch;
    120	char		flush_cbrs;
    121	char		fill[10];
    122	pid_t		pid;
    123	void		*buf;
    124	size_t		buflen;
    125	/* ---- output --- */
    126	unsigned int	num_contexts;
    127};
    128
    129#define GRU_DUMP_MAGIC	0x3474ab6c
    130struct gru_dump_context_header {
    131	unsigned int	magic;
    132	unsigned int	gid;
    133	unsigned char	ctxnum;
    134	unsigned char	cbrcnt;
    135	unsigned char	dsrcnt;
    136	pid_t		pid;
    137	unsigned long	vaddr;
    138	int		cch_locked;
    139	unsigned long	data[];
    140};
    141
    142/*
    143 * GRU configuration info (temp - for testing)
    144 */
    145struct gru_config_info {
    146	int		cpus;
    147	int		blades;
    148	int		nodes;
    149	int		chiplets;
    150	int		fill[16];
    151};
    152
    153#endif /* __GRULIB_H__ */