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/*
* Copyright 2007 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"
#define PB_BUFMGR_DWORDS (4096 / 2)
#define PB_MIN_USER_DWORDS 2048
static uint32_t
nouveau_pushbuf_calc_reloc(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_pushbuf_emit_reloc(struct nouveau_channel *chan, void *ptr,
struct nouveau_bo *bo, uint32_t data, uint32_t data2,
uint32_t flags, uint32_t vor, uint32_t tor)
{
struct nouveau_device_priv *nvdev = nouveau_device(chan->device);
struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(chan->pushbuf);
struct drm_nouveau_gem_pushbuf_reloc *r;
struct drm_nouveau_gem_pushbuf_bo *pbbo;
uint32_t domains = 0;
if (nvpb->nr_relocs >= NOUVEAU_GEM_MAX_RELOCS)
return -ENOMEM;
if (nouveau_bo(bo)->user && (flags & NOUVEAU_BO_WR)) {
fprintf(stderr, "write to user buffer!!\n");
return -EINVAL;
}
pbbo = nouveau_bo_emit_buffer(chan, bo);
if (!pbbo)
return -ENOMEM;
if (flags & NOUVEAU_BO_VRAM)
domains |= NOUVEAU_GEM_DOMAIN_VRAM;
if (flags & NOUVEAU_BO_GART)
domains |= NOUVEAU_GEM_DOMAIN_GART;
pbbo->valid_domains &= domains;
assert(pbbo->valid_domains);
assert(flags & NOUVEAU_BO_RDWR);
if (flags & NOUVEAU_BO_RD) {
pbbo->read_domains |= domains;
}
if (flags & NOUVEAU_BO_WR) {
pbbo->write_domains |= domains;
nouveau_bo(bo)->write_marker = 1;
}
r = nvpb->relocs + nvpb->nr_relocs++;
r->bo_index = pbbo - nvpb->buffers;
r->reloc_index = (uint32_t *)ptr - nvpb->pushbuf;
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;
*(uint32_t *)ptr = (flags & NOUVEAU_BO_DUMMY) ? 0 :
nouveau_pushbuf_calc_reloc(pbbo, r);
return 0;
}
static int
nouveau_pushbuf_space(struct nouveau_channel *chan, unsigned min)
{
struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
struct nouveau_pushbuf_priv *nvpb = &nvchan->pb;
if (nvpb->pushbuf) {
free(nvpb->pushbuf);
nvpb->pushbuf = NULL;
}
nvpb->size = min < PB_MIN_USER_DWORDS ? PB_MIN_USER_DWORDS : min;
nvpb->pushbuf = malloc(sizeof(uint32_t) * nvpb->size);
nvpb->base.channel = chan;
nvpb->base.remaining = nvpb->size;
nvpb->base.cur = nvpb->pushbuf;
return 0;
}
int
nouveau_pushbuf_init(struct nouveau_channel *chan)
{
struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
struct nouveau_pushbuf_priv *nvpb = &nvchan->pb;
nouveau_pushbuf_space(chan, 0);
nvpb->buffers = calloc(NOUVEAU_GEM_MAX_BUFFERS,
sizeof(struct drm_nouveau_gem_pushbuf_bo));
nvpb->relocs = calloc(NOUVEAU_GEM_MAX_RELOCS,
sizeof(struct drm_nouveau_gem_pushbuf_reloc));
chan->pushbuf = &nvpb->base;
return 0;
}
int
nouveau_pushbuf_flush(struct nouveau_channel *chan, unsigned min)
{
struct nouveau_device_priv *nvdev = nouveau_device(chan->device);
struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
struct nouveau_pushbuf_priv *nvpb = &nvchan->pb;
struct drm_nouveau_gem_pushbuf req;
unsigned i;
int ret;
if (nvpb->base.remaining == nvpb->size)
return 0;
nvpb->size -= nvpb->base.remaining;
req.channel = chan->id;
req.nr_dwords = nvpb->size;
req.dwords = (uint64_t)(unsigned long)nvpb->pushbuf;
req.nr_buffers = nvpb->nr_buffers;
req.buffers = (uint64_t)(unsigned long)nvpb->buffers;
req.nr_relocs = nvpb->nr_relocs;
req.relocs = (uint64_t)(unsigned long)nvpb->relocs;
ret = drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GEM_PUSHBUF,
&req, sizeof(req));
assert(ret == 0);
/* Update presumed offset/domain for any buffers that moved.
* Dereference all buffers on validate list
*/
for (i = 0; i < nvpb->nr_buffers; i++) {
struct drm_nouveau_gem_pushbuf_bo *pbbo = &nvpb->buffers[i];
struct nouveau_bo *bo = (void *)(unsigned long)pbbo->user_priv;
if (pbbo->presumed_ok == 0) {
nouveau_bo(bo)->domain = pbbo->presumed_domain;
nouveau_bo(bo)->offset = pbbo->presumed_offset;
}
nouveau_bo(bo)->pending = NULL;
nouveau_bo_ref(NULL, &bo);
}
nvpb->nr_buffers = 0;
nvpb->nr_relocs = 0;
/* Allocate space for next push buffer */
ret = nouveau_pushbuf_space(chan, min);
assert(!ret);
if (chan->flush_notify)
chan->flush_notify(chan);
return 0;
}
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