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/*
* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __GRULIB_H__
#define __GRULIB_H__
#define GRU_BASENAME "gru"
#define GRU_FULLNAME "/dev/gru"
#define GRU_IOCTL_NUM 'G'
/*
* Maximum number of GRU segments that a user can have open
* ZZZ temp - set high for testing. Revisit.
*/
#define GRU_MAX_OPEN_CONTEXTS 32
/* Set Number of Request Blocks */
#define GRU_CREATE_CONTEXT _IOWR(GRU_IOCTL_NUM, 1, void *)
/* Register task as using the slice */
#define GRU_SET_TASK_SLICE _IOWR(GRU_IOCTL_NUM, 5, void *)
/* Fetch exception detail */
#define GRU_USER_GET_EXCEPTION_DETAIL _IOWR(GRU_IOCTL_NUM, 6, void *)
/* For user call_os handling - normally a TLB fault */
#define GRU_USER_CALL_OS _IOWR(GRU_IOCTL_NUM, 8, void *)
/* For user unload context */
#define GRU_USER_UNLOAD_CONTEXT _IOWR(GRU_IOCTL_NUM, 9, void *)
/* For fetching GRU chiplet status */
#define GRU_GET_CHIPLET_STATUS _IOWR(GRU_IOCTL_NUM, 10, void *)
/* For dumpping GRU chiplet state */
#define GRU_DUMP_CHIPLET_STATE _IOWR(GRU_IOCTL_NUM, 11, void *)
/* For getting gseg statistics */
#define GRU_GET_GSEG_STATISTICS _IOWR(GRU_IOCTL_NUM, 12, void *)
/* For user TLB flushing (primarily for tests) */
#define GRU_USER_FLUSH_TLB _IOWR(GRU_IOCTL_NUM, 50, void *)
/* Get some config options (primarily for tests & emulator) */
#define GRU_GET_CONFIG_INFO _IOWR(GRU_IOCTL_NUM, 51, void *)
/* Various kernel self-tests */
#define GRU_KTEST _IOWR(GRU_IOCTL_NUM, 52, void *)
#define CONTEXT_WINDOW_BYTES(th) (GRU_GSEG_PAGESIZE * (th))
#define THREAD_POINTER(p, th) (p + GRU_GSEG_PAGESIZE * (th))
#define GSEG_START(cb) ((void *)((unsigned long)(cb) & ~(GRU_GSEG_PAGESIZE - 1)))
/*
* Statictics kept on a per-GTS basis.
*/
struct gts_statistics {
unsigned long fmm_tlbdropin;
unsigned long upm_tlbdropin;
unsigned long context_stolen;
};
struct gru_get_gseg_statistics_req {
unsigned long gseg;
struct gts_statistics stats;
};
/*
* Structure used to pass TLB flush parameters to the driver
*/
struct gru_create_context_req {
unsigned long gseg;
unsigned int data_segment_bytes;
unsigned int control_blocks;
unsigned int maximum_thread_count;
unsigned int options;
};
/*
* Structure used to pass unload context parameters to the driver
*/
struct gru_unload_context_req {
unsigned long gseg;
};
/*
* Structure used to pass TLB flush parameters to the driver
*/
struct gru_flush_tlb_req {
unsigned long gseg;
unsigned long vaddr;
size_t len;
};
/*
* Structure used to pass TLB flush parameters to the driver
*/
enum {dcs_pid, dcs_gid};
struct gru_dump_chiplet_state_req {
unsigned int op;
int gid;
int ctxnum;
char data_opt;
char lock_cch;
pid_t pid;
void *buf;
size_t buflen;
/* ---- output --- */
unsigned int num_contexts;
};
#define GRU_DUMP_MAGIC 0x3474ab6c
struct gru_dump_context_header {
unsigned int magic;
unsigned char gid;
unsigned char ctxnum;
unsigned char cbrcnt;
unsigned char dsrcnt;
pid_t pid;
unsigned long vaddr;
int cch_locked;
unsigned long data[0];
};
/*
* GRU configuration info (temp - for testing)
*/
struct gru_config_info {
int cpus;
int blades;
int nodes;
int chiplets;
int fill[16];
};
#endif /* __GRULIB_H__ */
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