267 lines
7.2 KiB
C
267 lines
7.2 KiB
C
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/*
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* Copyright © 2008 Jérôme Glisse
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* All Rights Reserved.
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*
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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 (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, sub license, 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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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*/
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/*
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* Authors:
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* Jérôme Glisse <glisse@freedesktop.org>
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include "radeon_cs.h"
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#include "radeon_cs_gem.h"
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#include "radeon_bo_gem.h"
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#include "drm.h"
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#include "radeon_drm.h"
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#pragma pack(1)
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struct cs_reloc_gem {
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uint32_t handle;
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uint32_t domains;
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uint32_t soffset;
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uint32_t eoffset;
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};
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#pragma pack()
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struct cs_gem {
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struct radeon_cs base;
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struct drm_radeon_cs2 cs;
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struct drm_radeon_cs_chunk chunks[2];
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unsigned nrelocs;
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uint32_t *relocs;
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};
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static struct radeon_cs *cs_create(struct radeon_cs_manager *csm,
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uint32_t ndw)
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{
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struct cs_gem *csg;
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/* max cmd buffer size is 64Kb */
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if (ndw > (64 * 1024 / 4)) {
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return NULL;
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}
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csg = (struct cs_gem*)calloc(1, sizeof(struct cs_gem));
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if (csg == NULL) {
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return NULL;
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}
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csg->base.csm = csm;
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csg->base.ndw = 64 * 1024 / 4;
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csg->base.packets = (uint32_t*)calloc(1, 64 * 1024);
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if (csg->base.packets == NULL) {
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free(csg);
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return NULL;
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}
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csg->base.relocs_total_size = 0;
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csg->base.crelocs = 0;
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csg->nrelocs = 4096 / (4 * 4) ;
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csg->base.relocs = csg->relocs = (uint32_t*)calloc(1, 4096);
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if (csg->relocs == NULL) {
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free(csg->base.packets);
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free(csg);
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return NULL;
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}
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csg->chunks[0].chunk_id = RADEON_CHUNK_ID_IB;
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csg->chunks[0].length_dw = 0;
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csg->chunks[0].chunk_data = (uint64_t)(intptr_t)csg->base.packets;
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csg->chunks[1].chunk_id = RADEON_CHUNK_ID_RELOCS;
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csg->chunks[1].length_dw = 0;
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csg->chunks[1].chunk_data = (uint64_t)(intptr_t)csg->relocs;
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return (struct radeon_cs*)csg;
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}
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static int cs_write_dword(struct radeon_cs *cs, uint32_t dword)
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{
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if (cs->cdw >= cs->ndw) {
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uint32_t tmp, *ptr;
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tmp = (cs->cdw + 1 + 0x3FF) & (~0x3FF);
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ptr = (uint32_t*)realloc(cs->packets, 4 * tmp);
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if (ptr == NULL) {
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return -ENOMEM;
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}
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cs->packets = ptr;
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cs->ndw = tmp;
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}
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cs->packets[cs->cdw++] = dword;
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if (cs->section) {
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cs->section_cdw++;
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}
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return 0;
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}
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static int cs_write_reloc(struct radeon_cs *cs,
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struct radeon_bo *bo,
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uint32_t soffset,
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uint32_t eoffset,
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uint32_t domains)
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{
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struct cs_gem *csg = (struct cs_gem*)cs;
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struct cs_reloc_gem *reloc;
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unsigned i;
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/* check reloc window */
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if (eoffset > bo->size) {
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return -EINVAL;
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}
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if (soffset > eoffset) {
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return -EINVAL;
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}
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/* check if bo is already referenced */
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for(i = 0; i < cs->crelocs; i++) {
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reloc = (struct cs_reloc_gem*)&csg->relocs[i * 4];
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if (reloc->handle == bo->handle) {
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/* update start offset and size */
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if (eoffset > reloc->eoffset) {
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reloc->eoffset = eoffset;
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}
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if (soffset < reloc->soffset) {
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reloc->soffset = soffset;
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}
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reloc->domains |= domains;
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return 0;
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}
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}
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/* add bo */
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if (csg->base.crelocs >= csg->nrelocs) {
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uint32_t *tmp, size;
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size = (csg->nrelocs * 4 * 4) + (4096 / (4 * 4));
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tmp = (uint32_t*)realloc(csg->relocs, size);
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if (tmp == NULL) {
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return -ENOMEM;
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}
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cs->relocs = csg->relocs = tmp;
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csg->nrelocs = size / (4 * 4);
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}
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reloc = (struct cs_reloc_gem*)&csg->relocs[csg->base.crelocs * 4];
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reloc->handle = bo->handle;
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reloc->soffset = soffset;
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reloc->eoffset = eoffset;
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reloc->domains = domains;
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cs->crelocs++;
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radeon_bo_ref(bo);
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return 0;
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}
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static int cs_begin(struct radeon_cs *cs,
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uint32_t ndw,
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const char *file,
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const char *func,
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int line)
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{
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if (cs->section) {
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fprintf(stderr, "CS already in a section(%s,%s,%d)\n",
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cs->section_file, cs->section_func, cs->section_line);
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fprintf(stderr, "CS can't start section(%s,%s,%d)\n",
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file, func, line);
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return -EPIPE;
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}
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cs->section = 1;
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cs->section_ndw = ndw;
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cs->section_cdw = 0;
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cs->section_file = file;
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cs->section_func = func;
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cs->section_line = line;
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return 0;
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}
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static int cs_end(struct radeon_cs *cs,
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const char *file,
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const char *func,
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int line)
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{
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if (!cs->section) {
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fprintf(stderr, "CS no section to end at (%s,%s,%d)\n",
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file, func, line);
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return -EPIPE;
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}
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cs->section = 0;
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if (cs->section_ndw != cs->section_cdw) {
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fprintf(stderr, "CS section size missmatch start at (%s,%s,%d)\n",
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cs->section_file, cs->section_func, cs->section_line);
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fprintf(stderr, "CS section end at (%s,%s,%d)\n",
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file, func, line);
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return -EPIPE;
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}
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return 0;
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}
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static int cs_emit(struct radeon_cs *cs)
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{
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return 0;
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}
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static int cs_destroy(struct radeon_cs *cs)
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{
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free(cs->relocs);
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free(cs->packets);
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free(cs);
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return 0;
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}
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static int cs_erase(struct radeon_cs *cs)
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{
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cs->relocs_total_size = 0;
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cs->relocs = NULL;
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cs->crelocs = 0;
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cs->cdw = 0;
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cs->section = 0;
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return 0;
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}
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static int cs_need_flush(struct radeon_cs *cs)
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{
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return (cs->relocs_total_size > (7*1024*1024));
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}
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struct radeon_cs_funcs radeon_cs_funcs = {
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cs_create,
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cs_write_dword,
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cs_write_reloc,
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cs_begin,
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cs_end,
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cs_emit,
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cs_destroy,
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cs_erase,
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cs_need_flush
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};
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struct radeon_cs_manager *radeon_cs_manager_gem(int fd)
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{
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struct radeon_cs_manager *csm;
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csm = (struct radeon_cs_manager*)calloc(1,
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sizeof(struct radeon_cs_manager));
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if (csm == NULL) {
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return NULL;
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}
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csm->funcs = &radeon_cs_funcs;
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csm->fd = fd;
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return csm;
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}
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void radeon_cs_manager_gem_shutdown(struct radeon_cs_manager *csm)
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{
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free(csm);
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}
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