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bb5cdf8d1c
Having the filename in the header serves little purpose and is often wrong after renames as it is here in several places, just drop it from all omapdrm files. While we are here unify the copyright tags to the TI recommended style. Signed-off-by: Andrew F. Davis <afd@ti.com>
94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/*
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* SImple Tiler Allocator (SiTA) private structures.
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*
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* Copyright (C) 2009-2011 Texas Instruments Incorporated - http://www.ti.com/
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* Author: Ravi Ramachandra <r.ramachandra@ti.com>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of Texas Instruments Incorporated nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TCM_SITA_H
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#define _TCM_SITA_H
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#include "tcm.h"
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/* length between two coordinates */
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#define LEN(a, b) ((a) > (b) ? (a) - (b) + 1 : (b) - (a) + 1)
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enum criteria {
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CR_MAX_NEIGHS = 0x01,
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CR_FIRST_FOUND = 0x10,
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CR_BIAS_HORIZONTAL = 0x20,
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CR_BIAS_VERTICAL = 0x40,
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CR_DIAGONAL_BALANCE = 0x80
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};
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/* nearness to the beginning of the search field from 0 to 1000 */
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struct nearness_factor {
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s32 x;
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s32 y;
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};
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/*
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* Statistics on immediately neighboring slots. Edge is the number of
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* border segments that are also border segments of the scan field. Busy
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* refers to the number of neighbors that are occupied.
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*/
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struct neighbor_stats {
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u16 edge;
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u16 busy;
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};
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/* structure to keep the score of a potential allocation */
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struct score {
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struct nearness_factor f;
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struct neighbor_stats n;
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struct tcm_area a;
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u16 neighs; /* number of busy neighbors */
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};
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struct sita_pvt {
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spinlock_t lock; /* spinlock to protect access */
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struct tcm_pt div_pt; /* divider point splitting container */
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struct tcm_area ***map; /* pointers to the parent area for each slot */
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};
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/* assign coordinates to area */
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static inline
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void assign(struct tcm_area *a, u16 x0, u16 y0, u16 x1, u16 y1)
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{
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a->p0.x = x0;
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a->p0.y = y0;
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a->p1.x = x1;
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a->p1.y = y1;
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}
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#endif
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