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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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9cc9b056ea
Add support for dumpping the state of an entire GRU chiplet. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/*
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* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __GRULIB_H__
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#define __GRULIB_H__
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#define GRU_BASENAME "gru"
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#define GRU_FULLNAME "/dev/gru"
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#define GRU_IOCTL_NUM 'G'
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/*
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* Maximum number of GRU segments that a user can have open
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* ZZZ temp - set high for testing. Revisit.
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*/
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#define GRU_MAX_OPEN_CONTEXTS 32
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/* Set Number of Request Blocks */
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#define GRU_CREATE_CONTEXT _IOWR(GRU_IOCTL_NUM, 1, void *)
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/* Register task as using the slice */
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#define GRU_SET_TASK_SLICE _IOWR(GRU_IOCTL_NUM, 5, void *)
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/* Fetch exception detail */
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#define GRU_USER_GET_EXCEPTION_DETAIL _IOWR(GRU_IOCTL_NUM, 6, void *)
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/* For user call_os handling - normally a TLB fault */
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#define GRU_USER_CALL_OS _IOWR(GRU_IOCTL_NUM, 8, void *)
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/* For user unload context */
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#define GRU_USER_UNLOAD_CONTEXT _IOWR(GRU_IOCTL_NUM, 9, void *)
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/* For fetching GRU chiplet status */
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#define GRU_GET_CHIPLET_STATUS _IOWR(GRU_IOCTL_NUM, 10, void *)
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/* For dumpping GRU chiplet state */
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#define GRU_DUMP_CHIPLET_STATE _IOWR(GRU_IOCTL_NUM, 11, void *)
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/* For user TLB flushing (primarily for tests) */
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#define GRU_USER_FLUSH_TLB _IOWR(GRU_IOCTL_NUM, 50, void *)
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/* Get some config options (primarily for tests & emulator) */
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#define GRU_GET_CONFIG_INFO _IOWR(GRU_IOCTL_NUM, 51, void *)
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#define CONTEXT_WINDOW_BYTES(th) (GRU_GSEG_PAGESIZE * (th))
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#define THREAD_POINTER(p, th) (p + GRU_GSEG_PAGESIZE * (th))
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/*
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* Structure used to pass TLB flush parameters to the driver
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*/
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struct gru_create_context_req {
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unsigned long gseg;
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unsigned int data_segment_bytes;
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unsigned int control_blocks;
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unsigned int maximum_thread_count;
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unsigned int options;
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};
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/*
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* Structure used to pass unload context parameters to the driver
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*/
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struct gru_unload_context_req {
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unsigned long gseg;
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};
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/*
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* Structure used to pass TLB flush parameters to the driver
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*/
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struct gru_flush_tlb_req {
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unsigned long gseg;
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unsigned long vaddr;
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size_t len;
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};
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/*
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* Structure used to pass TLB flush parameters to the driver
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*/
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enum {dcs_pid, dcs_gid};
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struct gru_dump_chiplet_state_req {
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unsigned int op;
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int gid;
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int ctxnum;
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char data_opt;
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char lock_cch;
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pid_t pid;
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void *buf;
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size_t buflen;
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/* ---- output --- */
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unsigned int num_contexts;
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};
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#define GRU_DUMP_MAGIC 0x3474ab6c
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struct gru_dump_context_header {
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unsigned int magic;
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unsigned char gid;
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unsigned char ctxnum;
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unsigned char cbrcnt;
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unsigned char dsrcnt;
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pid_t pid;
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unsigned long vaddr;
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int cch_locked;
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unsigned long data[0];
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};
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/*
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* GRU configuration info (temp - for testing)
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*/
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struct gru_config_info {
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int cpus;
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int blades;
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int nodes;
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int chiplets;
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int fill[16];
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};
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#endif /* __GRULIB_H__ */
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