drm/nouveau/nouveau_bo.c

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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.
*/
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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdint.h>
#include <stdlib.h>
#include <errno.h>
#include <assert.h>
#include <sys/mman.h>
#include "nouveau_private.h"
int
nouveau_bo_init(struct nouveau_device *dev)
{
return 0;
}
void
nouveau_bo_takedown(struct nouveau_device *dev)
{
}
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static int
nouveau_bo_info(struct nouveau_bo_priv *nvbo, struct drm_nouveau_gem_info *arg)
{
nvbo->handle = nvbo->base.handle = arg->handle;
nvbo->domain = arg->domain;
nvbo->size = arg->size;
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nvbo->offset = arg->offset;
nvbo->map_handle = arg->map_handle;
nvbo->base.tile_mode = arg->tile_mode;
/* XXX - flag inverted for backwards compatibility */
nvbo->base.tile_flags = arg->tile_flags ^ NOUVEAU_GEM_TILE_NONCONTIG;
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return 0;
}
static int
nouveau_bo_allocated(struct nouveau_bo_priv *nvbo)
{
if (nvbo->sysmem || nvbo->handle)
return 1;
return 0;
}
static int
nouveau_bo_ualloc(struct nouveau_bo_priv *nvbo)
{
if (nvbo->user || nvbo->sysmem) {
assert(nvbo->sysmem);
return 0;
}
nvbo->sysmem = malloc(nvbo->size);
if (!nvbo->sysmem)
return -ENOMEM;
return 0;
}
static void
nouveau_bo_ufree(struct nouveau_bo_priv *nvbo)
{
if (nvbo->sysmem) {
if (!nvbo->user)
free(nvbo->sysmem);
nvbo->sysmem = NULL;
}
}
static void
nouveau_bo_kfree(struct nouveau_bo_priv *nvbo)
{
struct nouveau_device_priv *nvdev = nouveau_device(nvbo->base.device);
struct drm_gem_close req;
if (!nvbo->handle)
return;
if (nvbo->map) {
munmap(nvbo->map, nvbo->size);
nvbo->map = NULL;
}
req.handle = nvbo->handle;
nvbo->handle = 0;
drmIoctl(nvdev->fd, DRM_IOCTL_GEM_CLOSE, &req);
}
static int
nouveau_bo_kalloc(struct nouveau_bo_priv *nvbo, struct nouveau_channel *chan)
{
struct nouveau_device_priv *nvdev = nouveau_device(nvbo->base.device);
struct drm_nouveau_gem_new req;
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struct drm_nouveau_gem_info *info = &req.info;
int ret;
if (nvbo->handle)
return 0;
req.channel_hint = chan ? chan->id : 0;
req.align = nvbo->align;
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info->size = nvbo->size;
info->domain = 0;
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if (nvbo->flags & NOUVEAU_BO_VRAM)
info->domain |= NOUVEAU_GEM_DOMAIN_VRAM;
if (nvbo->flags & NOUVEAU_BO_GART)
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info->domain |= NOUVEAU_GEM_DOMAIN_GART;
if (!info->domain) {
info->domain |= (NOUVEAU_GEM_DOMAIN_VRAM |
NOUVEAU_GEM_DOMAIN_GART);
}
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if (nvbo->flags & NOUVEAU_BO_MAP)
info->domain |= NOUVEAU_GEM_DOMAIN_MAPPABLE;
info->tile_mode = nvbo->base.tile_mode;
info->tile_flags = nvbo->base.tile_flags;
/* XXX - flag inverted for backwards compatibility */
info->tile_flags ^= NOUVEAU_GEM_TILE_NONCONTIG;
if (!nvdev->has_bo_usage)
info->tile_flags &= NOUVEAU_GEM_TILE_LAYOUT_MASK;
ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_GEM_NEW,
&req, sizeof(req));
if (ret)
return ret;
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nouveau_bo_info(nvbo, &req.info);
return 0;
}
static int
nouveau_bo_kmap(struct nouveau_bo_priv *nvbo)
{
struct nouveau_device_priv *nvdev = nouveau_device(nvbo->base.device);
if (nvbo->map)
return 0;
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if (!nvbo->map_handle)
return -EINVAL;
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nvbo->map = mmap(0, nvbo->size, PROT_READ | PROT_WRITE,
MAP_SHARED, nvdev->fd, nvbo->map_handle);
if (nvbo->map == MAP_FAILED) {
nvbo->map = NULL;
return -errno;
}
return 0;
}
int
nouveau_bo_new_tile(struct nouveau_device *dev, uint32_t flags, int align,
int size, uint32_t tile_mode, uint32_t tile_flags,
struct nouveau_bo **bo)
{
struct nouveau_bo_priv *nvbo;
int ret;
if (!dev || !bo || *bo)
return -EINVAL;
nvbo = calloc(1, sizeof(struct nouveau_bo_priv));
if (!nvbo)
return -ENOMEM;
nvbo->base.device = dev;
nvbo->base.size = size;
nvbo->base.tile_mode = tile_mode;
nvbo->base.tile_flags = tile_flags;
nvbo->refcount = 1;
nvbo->flags = flags;
nvbo->size = size;
nvbo->align = align;
if (flags & (NOUVEAU_BO_VRAM | NOUVEAU_BO_GART)) {
ret = nouveau_bo_kalloc(nvbo, NULL);
if (ret) {
nouveau_bo_ref(NULL, (void *)&nvbo);
return ret;
}
}
*bo = &nvbo->base;
return 0;
}
int
nouveau_bo_new(struct nouveau_device *dev, uint32_t flags, int align,
int size, struct nouveau_bo **bo)
{
return nouveau_bo_new_tile(dev, flags, align, size, 0, 0, bo);
}
int
nouveau_bo_user(struct nouveau_device *dev, void *ptr, int size,
struct nouveau_bo **bo)
{
struct nouveau_bo_priv *nvbo;
int ret;
ret = nouveau_bo_new(dev, NOUVEAU_BO_MAP, 0, size, bo);
if (ret)
return ret;
nvbo = nouveau_bo(*bo);
nvbo->sysmem = ptr;
nvbo->user = 1;
return 0;
}
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int
nouveau_bo_wrap(struct nouveau_device *dev, uint32_t handle,
struct nouveau_bo **bo)
{
struct nouveau_device_priv *nvdev = nouveau_device(dev);
struct drm_nouveau_gem_info req;
struct nouveau_bo_priv *nvbo;
int ret;
ret = nouveau_bo_new(dev, 0, 0, 0, bo);
if (ret)
return ret;
nvbo = nouveau_bo(*bo);
req.handle = handle;
ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_GEM_INFO,
&req, sizeof(req));
if (ret) {
nouveau_bo_ref(NULL, bo);
return ret;
}
nouveau_bo_info(nvbo, &req);
nvbo->base.size = nvbo->size;
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return 0;
}
int
nouveau_bo_handle_get(struct nouveau_bo *bo, uint32_t *handle)
{
struct nouveau_device_priv *nvdev = nouveau_device(bo->device);
struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
int ret;
if (!bo || !handle)
return -EINVAL;
if (!nvbo->global_handle) {
struct drm_gem_flink req;
ret = nouveau_bo_kalloc(nvbo, NULL);
if (ret)
return ret;
req.handle = nvbo->handle;
ret = drmIoctl(nvdev->fd, DRM_IOCTL_GEM_FLINK, &req);
if (ret) {
nouveau_bo_kfree(nvbo);
return ret;
}
nvbo->global_handle = req.name;
}
*handle = nvbo->global_handle;
return 0;
}
int
nouveau_bo_handle_ref(struct nouveau_device *dev, uint32_t handle,
struct nouveau_bo **bo)
{
struct nouveau_device_priv *nvdev = nouveau_device(dev);
struct nouveau_bo_priv *nvbo;
struct drm_gem_open req;
int ret;
req.name = handle;
ret = drmIoctl(nvdev->fd, DRM_IOCTL_GEM_OPEN, &req);
if (ret) {
nouveau_bo_ref(NULL, bo);
return ret;
}
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ret = nouveau_bo_wrap(dev, req.handle, bo);
if (ret) {
nouveau_bo_ref(NULL, bo);
return ret;
}
nvbo = nouveau_bo(*bo);
nvbo->base.handle = nvbo->handle;
return 0;
}
static void
nouveau_bo_del(struct nouveau_bo **bo)
{
struct nouveau_bo_priv *nvbo;
if (!bo || !*bo)
return;
nvbo = nouveau_bo(*bo);
*bo = NULL;
if (--nvbo->refcount)
return;
if (nvbo->pending) {
nvbo->pending = NULL;
nouveau_pushbuf_flush(nvbo->pending_channel, 0);
}
nouveau_bo_ufree(nvbo);
nouveau_bo_kfree(nvbo);
free(nvbo);
}
int
nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pbo)
{
if (!pbo)
return -EINVAL;
if (ref)
nouveau_bo(ref)->refcount++;
if (*pbo)
nouveau_bo_del(pbo);
*pbo = ref;
return 0;
}
static int
nouveau_bo_wait(struct nouveau_bo *bo, int cpu_write, int no_wait, int no_block)
{
struct nouveau_device_priv *nvdev = nouveau_device(bo->device);
struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
struct drm_nouveau_gem_cpu_prep req;
int ret;
if (!nvbo->global_handle && !nvbo->write_marker && !cpu_write)
return 0;
if (nvbo->pending &&
(nvbo->pending->write_domains || cpu_write)) {
nvbo->pending = NULL;
nouveau_pushbuf_flush(nvbo->pending_channel, 0);
}
req.handle = nvbo->handle;
req.flags = 0;
if (cpu_write)
req.flags |= NOUVEAU_GEM_CPU_PREP_WRITE;
if (no_wait)
req.flags |= NOUVEAU_GEM_CPU_PREP_NOWAIT;
if (no_block)
req.flags |= NOUVEAU_GEM_CPU_PREP_NOBLOCK;
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do {
ret = drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GEM_CPU_PREP,
&req, sizeof(req));
} while (ret == -EAGAIN);
if (ret)
return ret;
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if (ret == 0)
nvbo->write_marker = 0;
return 0;
}
int
nouveau_bo_map_range(struct nouveau_bo *bo, uint32_t delta, uint32_t size,
uint32_t flags)
{
struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
int ret;
if (!nvbo || bo->map)
return -EINVAL;
if (!nouveau_bo_allocated(nvbo)) {
if (nvbo->flags & (NOUVEAU_BO_VRAM | NOUVEAU_BO_GART)) {
ret = nouveau_bo_kalloc(nvbo, NULL);
if (ret)
return ret;
}
if (!nouveau_bo_allocated(nvbo)) {
ret = nouveau_bo_ualloc(nvbo);
if (ret)
return ret;
}
}
if (nvbo->sysmem) {
bo->map = (char *)nvbo->sysmem + delta;
} else {
ret = nouveau_bo_kmap(nvbo);
if (ret)
return ret;
if (!(flags & NOUVEAU_BO_NOSYNC)) {
ret = nouveau_bo_wait(bo, (flags & NOUVEAU_BO_WR),
(flags & NOUVEAU_BO_NOWAIT), 0);
if (ret)
return ret;
nvbo->map_refcnt++;
}
bo->map = (char *)nvbo->map + delta;
}
return 0;
}
void
nouveau_bo_map_flush(struct nouveau_bo *bo, uint32_t delta, uint32_t size)
{
}
int
nouveau_bo_map(struct nouveau_bo *bo, uint32_t flags)
{
return nouveau_bo_map_range(bo, 0, bo->size, flags);
}
void
nouveau_bo_unmap(struct nouveau_bo *bo)
{
struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
if (bo->map && !nvbo->sysmem && nvbo->map_refcnt) {
struct nouveau_device_priv *nvdev = nouveau_device(bo->device);
struct drm_nouveau_gem_cpu_fini req;
req.handle = nvbo->handle;
drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GEM_CPU_FINI,
&req, sizeof(req));
nvbo->map_refcnt--;
}
bo->map = NULL;
}
int
nouveau_bo_busy(struct nouveau_bo *bo, uint32_t access)
{
return nouveau_bo_wait(bo, (access & NOUVEAU_BO_WR), 1, 1);
}
uint32_t
nouveau_bo_pending(struct nouveau_bo *bo)
{
struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
uint32_t flags;
if (!nvbo->pending)
return 0;
flags = 0;
if (nvbo->pending->read_domains)
flags |= NOUVEAU_BO_RD;
if (nvbo->pending->write_domains)
flags |= NOUVEAU_BO_WR;
return flags;
}
struct drm_nouveau_gem_pushbuf_bo *
nouveau_bo_emit_buffer(struct nouveau_channel *chan, struct nouveau_bo *bo)
{
struct nouveau_pushbuf_priv *nvpb = &nouveau_channel(chan)->pb;
struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
struct drm_nouveau_gem_pushbuf_bo *pbbo;
struct nouveau_bo *ref = NULL;
int ret;
if (nvbo->pending)
return nvbo->pending;
if (!nvbo->handle) {
ret = nouveau_bo_kalloc(nvbo, chan);
if (ret)
return NULL;
if (nvbo->sysmem) {
void *sysmem_tmp = nvbo->sysmem;
nvbo->sysmem = NULL;
ret = nouveau_bo_map(bo, NOUVEAU_BO_WR);
if (ret)
return NULL;
nvbo->sysmem = sysmem_tmp;
memcpy(bo->map, nvbo->sysmem, nvbo->base.size);
nouveau_bo_ufree(nvbo);
nouveau_bo_unmap(bo);
}
}
if (nvpb->nr_buffers >= NOUVEAU_GEM_MAX_BUFFERS)
return NULL;
pbbo = nvpb->buffers + nvpb->nr_buffers++;
nvbo->pending = pbbo;
nvbo->pending_channel = chan;
nvbo->pending_refcnt = 0;
nouveau_bo_ref(bo, &ref);
pbbo->user_priv = (uint64_t)(unsigned long)ref;
pbbo->handle = nvbo->handle;
pbbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART;
pbbo->read_domains = 0;
pbbo->write_domains = 0;
pbbo->presumed.domain = nvbo->domain;
pbbo->presumed.offset = nvbo->offset;
pbbo->presumed.valid = 1;
return pbbo;
}