151 lines
4.5 KiB
C
151 lines
4.5 KiB
C
/*
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Copyright (C) Intel Corp. 2006. All Rights Reserved.
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Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
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develop this 3D driver.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice (including the
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next paragraph) shall be included in all copies or substantial
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portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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**********************************************************************/
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/*
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* Authors:
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* Keith Whitwell <keith@tungstengraphics.com>
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*/
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#include "brw_eu.h"
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#include <string.h>
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#include <stdlib.h>
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/* Returns the corresponding conditional mod for swapping src0 and
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* src1 in e.g. CMP.
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*/
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uint32_t
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brw_swap_cmod(uint32_t cmod)
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{
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switch (cmod) {
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case BRW_CONDITIONAL_Z:
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case BRW_CONDITIONAL_NZ:
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return cmod;
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case BRW_CONDITIONAL_G:
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return BRW_CONDITIONAL_LE;
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case BRW_CONDITIONAL_GE:
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return BRW_CONDITIONAL_L;
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case BRW_CONDITIONAL_L:
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return BRW_CONDITIONAL_GE;
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case BRW_CONDITIONAL_LE:
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return BRW_CONDITIONAL_G;
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default:
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return ~0;
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}
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}
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/* How does predicate control work when execution_size != 8? Do I
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* need to test/set for 0xffff when execution_size is 16?
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*/
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void brw_set_predicate_control_flag_value( struct brw_compile *p, unsigned value )
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{
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p->current->header.predicate_control = BRW_PREDICATE_NONE;
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if (value != 0xff) {
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if (value != p->flag_value) {
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brw_MOV(p, brw_flag_reg(), brw_imm_uw(value));
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p->flag_value = value;
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}
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p->current->header.predicate_control = BRW_PREDICATE_NORMAL;
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}
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}
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void brw_set_compression_control(struct brw_compile *p,
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enum brw_compression compression_control)
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{
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p->compressed = (compression_control == BRW_COMPRESSION_COMPRESSED);
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if (p->gen >= 060) {
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/* Since we don't use the 32-wide support in gen6, we translate
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* the pre-gen6 compression control here.
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*/
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switch (compression_control) {
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case BRW_COMPRESSION_NONE:
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/* This is the "use the first set of bits of dmask/vmask/arf
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* according to execsize" option.
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*/
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p->current->header.compression_control = GEN6_COMPRESSION_1Q;
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break;
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case BRW_COMPRESSION_2NDHALF:
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/* For 8-wide, this is "use the second set of 8 bits." */
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p->current->header.compression_control = GEN6_COMPRESSION_2Q;
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break;
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case BRW_COMPRESSION_COMPRESSED:
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/* For 16-wide instruction compression, use the first set of 16 bits
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* since we don't do 32-wide dispatch.
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*/
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p->current->header.compression_control = GEN6_COMPRESSION_1H;
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break;
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default:
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assert(!"not reached");
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p->current->header.compression_control = GEN6_COMPRESSION_1H;
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break;
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}
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} else {
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p->current->header.compression_control = compression_control;
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}
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}
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void brw_push_insn_state( struct brw_compile *p )
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{
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assert(p->current != &p->stack[BRW_EU_MAX_INSN_STACK-1]);
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memcpy(p->current+1, p->current, sizeof(struct brw_instruction));
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p->compressed_stack[p->current - p->stack] = p->compressed;
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p->current++;
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}
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void brw_pop_insn_state( struct brw_compile *p )
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{
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assert(p->current != p->stack);
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p->current--;
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p->compressed = p->compressed_stack[p->current - p->stack];
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}
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void brw_compile_init(struct brw_compile *p, int gen, void *store)
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{
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assert(gen);
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p->gen = gen;
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p->store = store;
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p->nr_insn = 0;
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p->current = p->stack;
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p->compressed = false;
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memset(p->current, 0, sizeof(p->current[0]));
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/* Some defaults?
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*/
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brw_set_mask_control(p, BRW_MASK_ENABLE); /* what does this do? */
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brw_set_saturate(p, 0);
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brw_set_compression_control(p, BRW_COMPRESSION_NONE);
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brw_set_predicate_control_flag_value(p, 0xff);
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p->if_stack_depth = 0;
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p->if_stack_array_size = 0;
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p->if_stack = NULL;
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}
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