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 /* Set Context Options */
36 #define GRU_SET_CONTEXT_OPTION _IOWR(GRU_IOCTL_NUM, 4, 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 dumpping GRU chiplet state */
48 #define GRU_DUMP_CHIPLET_STATE _IOWR(GRU_IOCTL_NUM, 11, void *)
50 /* For getting gseg statistics */
51 #define GRU_GET_GSEG_STATISTICS _IOWR(GRU_IOCTL_NUM, 12, 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))
64 #define GSEG_START(cb) ((void *)((unsigned long)(cb) & ~(GRU_GSEG_PAGESIZE - 1)))
66 struct gru_get_gseg_statistics_req {
68 struct gru_gseg_statistics stats;
72 * Structure used to pass TLB flush parameters to the driver
74 struct gru_create_context_req {
76 unsigned int data_segment_bytes;
77 unsigned int control_blocks;
78 unsigned int maximum_thread_count;
80 unsigned char tlb_preload_count;
84 * Structure used to pass unload context parameters to the driver
86 struct gru_unload_context_req {
91 * Structure used to set context options
93 enum {sco_gseg_owner, sco_cch_req_slice, sco_blade_chiplet};
94 struct gru_set_context_option_req {
102 * Structure used to pass TLB flush parameters to the driver
104 struct gru_flush_tlb_req {
111 * Structure used to pass TLB flush parameters to the driver
113 enum {dcs_pid, dcs_gid};
114 struct gru_dump_chiplet_state_req {
125 /* ---- output --- */
126 unsigned int num_contexts;
129 #define GRU_DUMP_MAGIC 0x3474ab6c
130 struct gru_dump_context_header {
133 unsigned char ctxnum;
134 unsigned char cbrcnt;
135 unsigned char dsrcnt;
139 unsigned long data[0];
143 * GRU configuration info (temp - for testing)
145 struct gru_config_info {
153 #endif /* __GRULIB_H__ */