1195098Sed/* Copyright (C) 2007-2019 Free Software Foundation, Inc. 2195098Sed 3195098SedThis file is part of GCC. 4195098Sed 5195098SedGCC is free software; you can redistribute it and/or modify it under 6195098Sedthe terms of the GNU General Public License as published by the Free 7195098SedSoftware Foundation; either version 3, or (at your option) any later 8195098Sedversion. 9195098Sed 10195098SedGCC is distributed in the hope that it will be useful, but WITHOUT ANY 11205218SrdivackyWARRANTY; without even the implied warranty of MERCHANTABILITY or 12207618SrdivackyFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13207618Srdivackyfor more details. 14208599Srdivacky 15195098SedUnder Section 7 of GPL version 3, you are granted additional 16208599Srdivackypermissions described in the GCC Runtime Library Exception, version 17212904Sdim3.1, as published by the Free Software Foundation. 18218893Sdim 19198396SrdivackyYou should have received a copy of the GNU General Public License and 20198396Srdivackya copy of the GCC Runtime Library Exception along with this program; 21218893Sdimsee the files COPYING3 and COPYING.RUNTIME respectively. If not, see 22195098Sed<http://www.gnu.org/licenses/>. */ 23195098Sed 24207618Srdivacky#include <spu_mfcio.h> 25207618Srdivackyextern vector unsigned int __mfc_tag_table; 26208599Srdivacky 27207618Srdivacky/* Release a sequential group of tags from exclusive use. The sequential 28207618Srdivacky group of tags is the range starting from <first_tag> through 29218893Sdim <first_tag>+<number_of_tags>-1. Upon successful release, MFC_DMA_TAG_VALID 30218893Sdim is returned and the tags become available for future reservation. 31218893Sdim 32207618Srdivacky If the specified tags were not previously reserved, no action is 33207618Srdivacky taken and MFC_DMA_TAG_INVALID is returned. */ 34208599Srdivacky 35210299Sedunsigned int 36210299Sed__mfc_multi_tag_release (unsigned int first_tag, unsigned int number_of_tags) 37210299Sed{ 38210299Sed vector unsigned int table_copy, tmp, tmp1; 39212904Sdim vector unsigned int one = (vector unsigned int) 40212904Sdim { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF }; 41195098Sed vector unsigned int is_invalid; 42195098Sed unsigned int last_tag; 43195098Sed vector unsigned int has_been_reserved; 44207618Srdivacky 45198090Srdivacky last_tag = first_tag + number_of_tags; 46218893Sdim 47207618Srdivacky table_copy = spu_sl (one, number_of_tags); 48207618Srdivacky table_copy = spu_rl (table_copy, -last_tag); 49207618Srdivacky table_copy = spu_xor (table_copy, -1); 50208599Srdivacky 51210299Sed /* Make sure the tags are in range and valid. */ 52210299Sed tmp = spu_cmpgt (spu_promote(last_tag, 0), 32); 53210299Sed tmp1 = spu_cmpgt (spu_promote(number_of_tags, 0), 32); 54218893Sdim is_invalid = spu_cmpgt (spu_promote(first_tag, 0), 31); 55218893Sdim 56195098Sed /* All bits are set to 1 if invalid, 0 if valid. */ 57195098Sed is_invalid = spu_or (tmp, is_invalid); 58207618Srdivacky is_invalid = spu_or (tmp1, is_invalid); 59207618Srdivacky 60207618Srdivacky /* check whether these tags have been reserved */ 61207618Srdivacky tmp = spu_rlmask (one, (int)-number_of_tags); 62206083Srdivacky tmp1 = spu_sl (__mfc_tag_table, first_tag); 63204961Srdivacky has_been_reserved = spu_cmpgt(tmp1, tmp); 64218893Sdim 65205218Srdivacky is_invalid = spu_or (has_been_reserved, is_invalid); 66205218Srdivacky 67205218Srdivacky table_copy = spu_sel (__mfc_tag_table, table_copy, table_copy); 68218893Sdim __mfc_tag_table = spu_sel (table_copy, __mfc_tag_table, is_invalid); 69195098Sed 70218893Sdim return spu_extract (is_invalid, 0); 71218893Sdim} 72218893Sdim 73218893Sdim