Commit 13d19498 authored by Jack Steiner's avatar Jack Steiner Committed by Linus Torvalds

GRU Driver: driver internal header files

This patch contains header files internal to the GRU driver.
Signed-off-by: default avatarJack Steiner <steiner@sgi.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 4c921d4d
/*
* 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 __GRU_H__
#define __GRU_H__
/*
* GRU architectural definitions
*/
#define GRU_CACHE_LINE_BYTES 64
#define GRU_HANDLE_STRIDE 256
#define GRU_CB_BASE 0
#define GRU_DS_BASE 0x20000
/*
* Size used to map GRU GSeg
*/
#if defined CONFIG_IA64
#define GRU_GSEG_PAGESIZE (256 * 1024UL)
#elif defined CONFIG_X86_64
#define GRU_GSEG_PAGESIZE (256 * 1024UL) /* ZZZ 2MB ??? */
#else
#error "Unsupported architecture"
#endif
/*
* Structure for obtaining GRU resource information
*/
struct gru_chiplet_info {
int node;
int chiplet;
int blade;
int total_dsr_bytes;
int total_cbr;
int total_user_dsr_bytes;
int total_user_cbr;
int free_user_dsr_bytes;
int free_user_cbr;
};
/* Flags for GRU options on the gru_create_context() call */
/* Select one of the follow 4 options to specify how TLB misses are handled */
#define GRU_OPT_MISS_DEFAULT 0x0000 /* Use default mode */
#define GRU_OPT_MISS_USER_POLL 0x0001 /* User will poll CB for faults */
#define GRU_OPT_MISS_FMM_INTR 0x0002 /* Send interrupt to cpu to
handle fault */
#define GRU_OPT_MISS_FMM_POLL 0x0003 /* Use system polling thread */
#define GRU_OPT_MISS_MASK 0x0003 /* Mask for TLB MISS option */
#endif /* __GRU_H__ */
/*
* 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 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 *)
#define CONTEXT_WINDOW_BYTES(th) (GRU_GSEG_PAGESIZE * (th))
#define THREAD_POINTER(p, th) (p + GRU_GSEG_PAGESIZE * (th))
/*
* 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;
};
/*
* 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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