923f7f6970
A few minor updates for the GRU driver. - documentation changes found in code reviews - changes to #ifdefs to make them recognized by "unifdef" (used in simulator testing) - change GRU context load/unload to prefetch data [akpm@linux-foundation.org: fix typo in comment] 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>
68 lines
2.0 KiB
C
68 lines
2.0 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 __GRU_H__
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#define __GRU_H__
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/*
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* GRU architectural definitions
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*/
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#define GRU_CACHE_LINE_BYTES 64
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#define GRU_HANDLE_STRIDE 256
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#define GRU_CB_BASE 0
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#define GRU_DS_BASE 0x20000
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/*
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* Size used to map GRU GSeg
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*/
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#if defined(CONFIG_IA64)
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#define GRU_GSEG_PAGESIZE (256 * 1024UL)
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#elif defined(CONFIG_X86_64)
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#define GRU_GSEG_PAGESIZE (256 * 1024UL) /* ZZZ 2MB ??? */
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#else
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#error "Unsupported architecture"
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#endif
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/*
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* Structure for obtaining GRU resource information
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*/
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struct gru_chiplet_info {
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int node;
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int chiplet;
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int blade;
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int total_dsr_bytes;
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int total_cbr;
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int total_user_dsr_bytes;
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int total_user_cbr;
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int free_user_dsr_bytes;
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int free_user_cbr;
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};
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/* Flags for GRU options on the gru_create_context() call */
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/* Select one of the follow 4 options to specify how TLB misses are handled */
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#define GRU_OPT_MISS_DEFAULT 0x0000 /* Use default mode */
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#define GRU_OPT_MISS_USER_POLL 0x0001 /* User will poll CB for faults */
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#define GRU_OPT_MISS_FMM_INTR 0x0002 /* Send interrupt to cpu to
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handle fault */
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#define GRU_OPT_MISS_FMM_POLL 0x0003 /* Use system polling thread */
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#define GRU_OPT_MISS_MASK 0x0003 /* Mask for TLB MISS option */
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#endif /* __GRU_H__ */
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