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/*
* Copyright 2010 Nouveau Project
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <assert.h>
#include "nouveau_private.h"
static uint32_t
nouveau_reloc_calc(struct drm_nouveau_gem_pushbuf_bo *pbbo,
struct drm_nouveau_gem_pushbuf_reloc *r)
{
uint32_t push = 0;
if (r->flags & NOUVEAU_GEM_RELOC_LOW)
push = (pbbo->presumed.offset + r->data);
else
if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
push = (pbbo->presumed.offset + r->data) >> 32;
else
push = r->data;
if (r->flags & NOUVEAU_GEM_RELOC_OR) {
if (pbbo->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM)
push |= r->vor;
else
push |= r->tor;
}
return push;
}
int
nouveau_reloc_emit(struct nouveau_channel *chan, struct nouveau_bo *reloc_bo,
uint32_t reloc_offset, uint32_t *reloc_ptr,
struct nouveau_bo *bo, uint32_t data, uint32_t data2,
uint32_t flags, uint32_t vor, uint32_t tor)
{
struct nouveau_pushbuf_priv *nvpb = &nouveau_channel(chan)->pb;
struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
struct drm_nouveau_gem_pushbuf_reloc *r;
struct drm_nouveau_gem_pushbuf_bo *pbbo, *rpbbo;
uint32_t domains = 0;
if (nvpb->nr_relocs >= NOUVEAU_GEM_MAX_RELOCS) {
fprintf(stderr, "too many relocs!!\n");
return -ENOMEM;
}
if (nvbo->user && (flags & NOUVEAU_BO_WR)) {
fprintf(stderr, "write to user buffer!!\n");
return -EINVAL;
}
/* We're about to reloc a user buffer, better make sure we don't cause
* a double migration.
*/
if (!(nvbo->flags & (NOUVEAU_BO_GART | NOUVEAU_BO_VRAM)))
nvbo->flags |= (flags & (NOUVEAU_BO_GART | NOUVEAU_BO_VRAM));
/* add buffer to validation list */
pbbo = nouveau_bo_emit_buffer(chan, bo);
if (!pbbo) {
fprintf(stderr, "buffer emit fail :(\n");
return -ENOMEM;
}
nouveau_bo(bo)->pending_refcnt++;
if (flags & (NOUVEAU_BO_VRAM | NOUVEAU_BO_GART)) {
if (flags & NOUVEAU_BO_VRAM)
domains |= NOUVEAU_GEM_DOMAIN_VRAM;
if (flags & NOUVEAU_BO_GART)
domains |= NOUVEAU_GEM_DOMAIN_GART;
} else
domains |= nvbo->domain;
if (!(pbbo->valid_domains & domains)) {
fprintf(stderr, "no valid domains remain!\n");
return -EINVAL;
}
pbbo->valid_domains &= domains;
assert(flags & NOUVEAU_BO_RDWR);
if (flags & NOUVEAU_BO_RD) {
pbbo->read_domains |= domains;
}
if (flags & NOUVEAU_BO_WR) {
pbbo->write_domains |= domains;
nvbo->write_marker = 1;
}
/* nvc0 gallium driver uses reloc_emit() with NULL target buffer
* to inform bufmgr of a buffer's use - however, we need something
* to track, so create a reloc for now, and hope it never triggers
* (it shouldn't, constant virtual address..)..
*/
if (!reloc_bo) {
reloc_bo = nvpb->buffer[nvpb->current];
reloc_offset = 0;
reloc_ptr = NULL;
}
/* add reloc target bo to validation list, and create the reloc */
rpbbo = nouveau_bo_emit_buffer(chan, reloc_bo);
if (!rpbbo)
return -ENOMEM;
nouveau_bo(reloc_bo)->pending_refcnt++;
r = nvpb->relocs + nvpb->nr_relocs++;
r->reloc_bo_index = rpbbo - nvpb->buffers;
r->reloc_bo_offset = reloc_offset;
r->bo_index = pbbo - nvpb->buffers;
r->flags = 0;
if (flags & NOUVEAU_BO_LOW)
r->flags |= NOUVEAU_GEM_RELOC_LOW;
if (flags & NOUVEAU_BO_HIGH)
r->flags |= NOUVEAU_GEM_RELOC_HIGH;
if (flags & NOUVEAU_BO_OR)
r->flags |= NOUVEAU_GEM_RELOC_OR;
r->data = data;
r->vor = vor;
r->tor = tor;
if (reloc_ptr) {
if (flags & NOUVEAU_BO_DUMMY)
*reloc_ptr = 0;
else
*reloc_ptr = nouveau_reloc_calc(pbbo, r);
}
return 0;
}
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