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/drivers/misc/sgi-gru/grulib.h

http://github.com/mirrors/linux
C Header | 153 lines | 80 code | 23 blank | 50 comment | 0 complexity | 14f239feca82bcf0907b8142ed83ce7f MD5 | raw file
  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__ */