2 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
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.
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.
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
22 #define GRU_BASENAME "gru"
23 #define GRU_FULLNAME "/dev/gru"
24 #define GRU_IOCTL_NUM 'G'
27 * Maximum number of GRU segments that a user can have open
28 * ZZZ temp - set high for testing. Revisit.
30 #define GRU_MAX_OPEN_CONTEXTS 32
32 /* Set Number of Request Blocks */
33 #define GRU_CREATE_CONTEXT _IOWR(GRU_IOCTL_NUM, 1, void *)
35 /* Register task as using the slice */
36 #define GRU_SET_TASK_SLICE _IOWR(GRU_IOCTL_NUM, 5, void *)
38 /* Fetch exception detail */
39 #define GRU_USER_GET_EXCEPTION_DETAIL _IOWR(GRU_IOCTL_NUM, 6, void *)
41 /* For user call_os handling - normally a TLB fault */
42 #define GRU_USER_CALL_OS _IOWR(GRU_IOCTL_NUM, 8, void *)
44 /* For user unload context */
45 #define GRU_USER_UNLOAD_CONTEXT _IOWR(GRU_IOCTL_NUM, 9, void *)
47 /* For fetching GRU chiplet status */
48 #define GRU_GET_CHIPLET_STATUS _IOWR(GRU_IOCTL_NUM, 10, void *)
50 /* For dumpping GRU chiplet state */
51 #define GRU_DUMP_CHIPLET_STATE _IOWR(GRU_IOCTL_NUM, 11, void *)
53 /* For user TLB flushing (primarily for tests) */
54 #define GRU_USER_FLUSH_TLB _IOWR(GRU_IOCTL_NUM, 50, void *)
56 /* Get some config options (primarily for tests & emulator) */
57 #define GRU_GET_CONFIG_INFO _IOWR(GRU_IOCTL_NUM, 51, void *)
59 /* Various kernel self-tests */
60 #define GRU_KTEST _IOWR(GRU_IOCTL_NUM, 52, void *)
62 #define CONTEXT_WINDOW_BYTES(th) (GRU_GSEG_PAGESIZE * (th))
63 #define THREAD_POINTER(p, th) (p + GRU_GSEG_PAGESIZE * (th))
66 * Structure used to pass TLB flush parameters to the driver
68 struct gru_create_context_req
{
70 unsigned int data_segment_bytes
;
71 unsigned int control_blocks
;
72 unsigned int maximum_thread_count
;
77 * Structure used to pass unload context parameters to the driver
79 struct gru_unload_context_req
{
84 * Structure used to pass TLB flush parameters to the driver
86 struct gru_flush_tlb_req
{
93 * Structure used to pass TLB flush parameters to the driver
95 enum {dcs_pid
, dcs_gid
};
96 struct gru_dump_chiplet_state_req
{
105 /* ---- output --- */
106 unsigned int num_contexts
;
109 #define GRU_DUMP_MAGIC 0x3474ab6c
110 struct gru_dump_context_header
{
113 unsigned char ctxnum
;
114 unsigned char cbrcnt
;
115 unsigned char dsrcnt
;
119 unsigned long data
[0];
123 * GRU configuration info (temp - for testing)
125 struct gru_config_info
{
133 #endif /* __GRULIB_H__ */