143 lines
4.5 KiB
C
143 lines
4.5 KiB
C
/* workitems.h -- Types for context data passed as hidden parameters to special
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built-ins.
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Copyright (C) 2015-2020 Free Software Foundation, Inc.
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Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com>
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for General Processor Tech.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files
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(the "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 shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef PHSA_RT_WORKITEMS_H
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#define PHSA_RT_WORKITEMS_H
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/* As the simple fibers implementation relies only on ucontext, we can
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assume is found by default as it is part of glibc. However, for partial
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HSAIL support on platforms without having it available, the following define
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can be undefined. */
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#define HAVE_FIBERS
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#ifdef HAVE_FIBERS
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#include "fibers.h"
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#endif
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#include <stdint.h>
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#include "phsa-rt.h"
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/* Data identifying a single work-group instance. */
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typedef struct
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{
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/* This is 1 in case there are more work groups to execute.
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If 0, the work-item threads should finish themselves. */
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int more_wgs;
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/* If the local size does not evenly divide the grid size, will have
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leftover WIs in the last execution. */
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int leftover_wg;
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int last_wg;
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/* (Flat) pointer to the beginning of the group segment allocated
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to the work-group. */
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void *group_base_ptr;
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/* The offset in the group memory for the kernel local group variables.
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To support module scope group variables, there might be need to preseve
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room for them in the beginning of the group segment. */
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uint32_t initial_group_offset;
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/* Similarly to the private segment that gets space allocated for all
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WIs in the work-group. */
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void *private_base_ptr;
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uint32_t private_segment_total_size;
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/* The first flat address of the group segment allocated for
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the given work group. */
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uint64_t group_segment_base_addr;
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/* Offset from the beginning of the private segment to the start of
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the previously allocated chunk of dynamic work-item memory (alloca)
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by any WI in the WG.
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Initially set to private_segment_total_size to denote no dynamic
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allocations have been made. The dynamic allocations are done downwards
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from the private segment end. */
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uint32_t alloca_stack_p;
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/* The position of the first word in the current function's alloca
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stack frame. Initialized to point outside the private segment. */
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uint32_t alloca_frame_p;
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/* The group id of the currently executed WG. This is for fiber based
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execution. The group ids are duplicated also to the per WI context
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struct for simplified single pointer access in the GCCBRIG produced
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code.
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*/
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uint32_t x;
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uint32_t y;
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uint32_t z;
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} PHSAWorkGroup;
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/* Data identifying a single work-item, passed to the work-item thread in case
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of a fiber based work-group execution. */
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typedef struct
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{
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/* NOTE: These members STARTing here should not be moved as they are
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accessed directly by code emitted by BRIG FE. */
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/* The local id of the current WI. */
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uint32_t x;
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uint32_t y;
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uint32_t z;
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/* The group id of the currently executed WG. */
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uint32_t group_x;
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uint32_t group_y;
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uint32_t group_z;
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/* The local size of a complete WG. */
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uint32_t wg_size_x;
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uint32_t wg_size_y;
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uint32_t wg_size_z;
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/* The local size of the current WG. */
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uint32_t cur_wg_size_x;
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uint32_t cur_wg_size_y;
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uint32_t cur_wg_size_z;
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/* NOTE: Fixed members END here. */
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PHSAKernelLaunchData *launch_data;
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/* Identifies and keeps book of the currently executed WG of the WI swarm. */
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volatile PHSAWorkGroup *wg;
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#ifdef HAVE_FIBERS
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fiber_t fiber;
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#endif
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} __attribute__((packed)) PHSAWorkItem;
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#endif
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