477 lines
12 KiB
C
477 lines
12 KiB
C
/*
|
|
* Copyright 2011 Red Hat, Inc.
|
|
*
|
|
* 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
|
|
* on the rights to use, copy, modify, merge, publish, distribute, sub
|
|
* license, 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 (including the next
|
|
* paragraph) 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 NON-INFRINGEMENT. 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 "qxl_drv.h"
|
|
#include "qxl_object.h"
|
|
#include <trace/events/fence.h>
|
|
|
|
/*
|
|
* drawable cmd cache - allocate a bunch of VRAM pages, suballocate
|
|
* into 256 byte chunks for now - gives 16 cmds per page.
|
|
*
|
|
* use an ida to index into the chunks?
|
|
*/
|
|
/* manage releaseables */
|
|
/* stack them 16 high for now -drawable object is 191 */
|
|
#define RELEASE_SIZE 256
|
|
#define RELEASES_PER_BO (4096 / RELEASE_SIZE)
|
|
/* put an alloc/dealloc surface cmd into one bo and round up to 128 */
|
|
#define SURFACE_RELEASE_SIZE 128
|
|
#define SURFACE_RELEASES_PER_BO (4096 / SURFACE_RELEASE_SIZE)
|
|
|
|
static const int release_size_per_bo[] = { RELEASE_SIZE, SURFACE_RELEASE_SIZE, RELEASE_SIZE };
|
|
static const int releases_per_bo[] = { RELEASES_PER_BO, SURFACE_RELEASES_PER_BO, RELEASES_PER_BO };
|
|
|
|
static const char *qxl_get_driver_name(struct fence *fence)
|
|
{
|
|
return "qxl";
|
|
}
|
|
|
|
static const char *qxl_get_timeline_name(struct fence *fence)
|
|
{
|
|
return "release";
|
|
}
|
|
|
|
static bool qxl_nop_signaling(struct fence *fence)
|
|
{
|
|
/* fences are always automatically signaled, so just pretend we did this.. */
|
|
return true;
|
|
}
|
|
|
|
static long qxl_fence_wait(struct fence *fence, bool intr, signed long timeout)
|
|
{
|
|
struct qxl_device *qdev;
|
|
struct qxl_release *release;
|
|
int count = 0, sc = 0;
|
|
bool have_drawable_releases;
|
|
unsigned long cur, end = jiffies + timeout;
|
|
|
|
qdev = container_of(fence->lock, struct qxl_device, release_lock);
|
|
release = container_of(fence, struct qxl_release, base);
|
|
have_drawable_releases = release->type == QXL_RELEASE_DRAWABLE;
|
|
|
|
retry:
|
|
sc++;
|
|
|
|
if (fence_is_signaled(fence))
|
|
goto signaled;
|
|
|
|
qxl_io_notify_oom(qdev);
|
|
|
|
for (count = 0; count < 11; count++) {
|
|
if (!qxl_queue_garbage_collect(qdev, true))
|
|
break;
|
|
|
|
if (fence_is_signaled(fence))
|
|
goto signaled;
|
|
}
|
|
|
|
if (fence_is_signaled(fence))
|
|
goto signaled;
|
|
|
|
if (have_drawable_releases || sc < 4) {
|
|
if (sc > 2)
|
|
/* back off */
|
|
usleep_range(500, 1000);
|
|
|
|
if (time_after(jiffies, end))
|
|
return 0;
|
|
|
|
if (have_drawable_releases && sc > 300) {
|
|
FENCE_WARN(fence, "failed to wait on release %llu "
|
|
"after spincount %d\n",
|
|
fence->context & ~0xf0000000, sc);
|
|
goto signaled;
|
|
}
|
|
goto retry;
|
|
}
|
|
/*
|
|
* yeah, original sync_obj_wait gave up after 3 spins when
|
|
* have_drawable_releases is not set.
|
|
*/
|
|
|
|
signaled:
|
|
cur = jiffies;
|
|
if (time_after(cur, end))
|
|
return 0;
|
|
return end - cur;
|
|
}
|
|
|
|
static const struct fence_ops qxl_fence_ops = {
|
|
.get_driver_name = qxl_get_driver_name,
|
|
.get_timeline_name = qxl_get_timeline_name,
|
|
.enable_signaling = qxl_nop_signaling,
|
|
.wait = qxl_fence_wait,
|
|
};
|
|
|
|
static int
|
|
qxl_release_alloc(struct qxl_device *qdev, int type,
|
|
struct qxl_release **ret)
|
|
{
|
|
struct qxl_release *release;
|
|
int handle;
|
|
size_t size = sizeof(*release);
|
|
|
|
release = kmalloc(size, GFP_KERNEL);
|
|
if (!release) {
|
|
DRM_ERROR("Out of memory\n");
|
|
return 0;
|
|
}
|
|
release->base.ops = NULL;
|
|
release->type = type;
|
|
release->release_offset = 0;
|
|
release->surface_release_id = 0;
|
|
INIT_LIST_HEAD(&release->bos);
|
|
|
|
idr_preload(GFP_KERNEL);
|
|
spin_lock(&qdev->release_idr_lock);
|
|
handle = idr_alloc(&qdev->release_idr, release, 1, 0, GFP_NOWAIT);
|
|
release->base.seqno = ++qdev->release_seqno;
|
|
spin_unlock(&qdev->release_idr_lock);
|
|
idr_preload_end();
|
|
if (handle < 0) {
|
|
kfree(release);
|
|
*ret = NULL;
|
|
return handle;
|
|
}
|
|
*ret = release;
|
|
QXL_INFO(qdev, "allocated release %d\n", handle);
|
|
release->id = handle;
|
|
return handle;
|
|
}
|
|
|
|
static void
|
|
qxl_release_free_list(struct qxl_release *release)
|
|
{
|
|
while (!list_empty(&release->bos)) {
|
|
struct qxl_bo_list *entry;
|
|
struct qxl_bo *bo;
|
|
|
|
entry = container_of(release->bos.next,
|
|
struct qxl_bo_list, tv.head);
|
|
bo = to_qxl_bo(entry->tv.bo);
|
|
qxl_bo_unref(&bo);
|
|
list_del(&entry->tv.head);
|
|
kfree(entry);
|
|
}
|
|
}
|
|
|
|
void
|
|
qxl_release_free(struct qxl_device *qdev,
|
|
struct qxl_release *release)
|
|
{
|
|
QXL_INFO(qdev, "release %d, type %d\n", release->id,
|
|
release->type);
|
|
|
|
if (release->surface_release_id)
|
|
qxl_surface_id_dealloc(qdev, release->surface_release_id);
|
|
|
|
spin_lock(&qdev->release_idr_lock);
|
|
idr_remove(&qdev->release_idr, release->id);
|
|
spin_unlock(&qdev->release_idr_lock);
|
|
|
|
if (release->base.ops) {
|
|
WARN_ON(list_empty(&release->bos));
|
|
qxl_release_free_list(release);
|
|
|
|
fence_signal(&release->base);
|
|
fence_put(&release->base);
|
|
} else {
|
|
qxl_release_free_list(release);
|
|
kfree(release);
|
|
}
|
|
}
|
|
|
|
static int qxl_release_bo_alloc(struct qxl_device *qdev,
|
|
struct qxl_bo **bo)
|
|
{
|
|
/* pin releases bo's they are too messy to evict */
|
|
return qxl_bo_create(qdev, PAGE_SIZE, false, true,
|
|
QXL_GEM_DOMAIN_VRAM, NULL, bo);
|
|
}
|
|
|
|
int qxl_release_list_add(struct qxl_release *release, struct qxl_bo *bo)
|
|
{
|
|
struct qxl_bo_list *entry;
|
|
|
|
list_for_each_entry(entry, &release->bos, tv.head) {
|
|
if (entry->tv.bo == &bo->tbo)
|
|
return 0;
|
|
}
|
|
|
|
entry = kmalloc(sizeof(struct qxl_bo_list), GFP_KERNEL);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
|
|
qxl_bo_ref(bo);
|
|
entry->tv.bo = &bo->tbo;
|
|
entry->tv.shared = false;
|
|
list_add_tail(&entry->tv.head, &release->bos);
|
|
return 0;
|
|
}
|
|
|
|
static int qxl_release_validate_bo(struct qxl_bo *bo)
|
|
{
|
|
int ret;
|
|
|
|
if (!bo->pin_count) {
|
|
qxl_ttm_placement_from_domain(bo, bo->type, false);
|
|
ret = ttm_bo_validate(&bo->tbo, &bo->placement,
|
|
true, false);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = reservation_object_reserve_shared(bo->tbo.resv);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* allocate a surface for reserved + validated buffers */
|
|
ret = qxl_bo_check_id(bo->gem_base.dev->dev_private, bo);
|
|
if (ret)
|
|
return ret;
|
|
return 0;
|
|
}
|
|
|
|
int qxl_release_reserve_list(struct qxl_release *release, bool no_intr)
|
|
{
|
|
int ret;
|
|
struct qxl_bo_list *entry;
|
|
|
|
/* if only one object on the release its the release itself
|
|
since these objects are pinned no need to reserve */
|
|
if (list_is_singular(&release->bos))
|
|
return 0;
|
|
|
|
ret = ttm_eu_reserve_buffers(&release->ticket, &release->bos,
|
|
!no_intr, NULL);
|
|
if (ret)
|
|
return ret;
|
|
|
|
list_for_each_entry(entry, &release->bos, tv.head) {
|
|
struct qxl_bo *bo = to_qxl_bo(entry->tv.bo);
|
|
|
|
ret = qxl_release_validate_bo(bo);
|
|
if (ret) {
|
|
ttm_eu_backoff_reservation(&release->ticket, &release->bos);
|
|
return ret;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void qxl_release_backoff_reserve_list(struct qxl_release *release)
|
|
{
|
|
/* if only one object on the release its the release itself
|
|
since these objects are pinned no need to reserve */
|
|
if (list_is_singular(&release->bos))
|
|
return;
|
|
|
|
ttm_eu_backoff_reservation(&release->ticket, &release->bos);
|
|
}
|
|
|
|
|
|
int qxl_alloc_surface_release_reserved(struct qxl_device *qdev,
|
|
enum qxl_surface_cmd_type surface_cmd_type,
|
|
struct qxl_release *create_rel,
|
|
struct qxl_release **release)
|
|
{
|
|
if (surface_cmd_type == QXL_SURFACE_CMD_DESTROY && create_rel) {
|
|
int idr_ret;
|
|
struct qxl_bo_list *entry = list_first_entry(&create_rel->bos, struct qxl_bo_list, tv.head);
|
|
struct qxl_bo *bo;
|
|
union qxl_release_info *info;
|
|
|
|
/* stash the release after the create command */
|
|
idr_ret = qxl_release_alloc(qdev, QXL_RELEASE_SURFACE_CMD, release);
|
|
if (idr_ret < 0)
|
|
return idr_ret;
|
|
bo = to_qxl_bo(entry->tv.bo);
|
|
|
|
(*release)->release_offset = create_rel->release_offset + 64;
|
|
|
|
qxl_release_list_add(*release, bo);
|
|
|
|
info = qxl_release_map(qdev, *release);
|
|
info->id = idr_ret;
|
|
qxl_release_unmap(qdev, *release, info);
|
|
return 0;
|
|
}
|
|
|
|
return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_surface_cmd),
|
|
QXL_RELEASE_SURFACE_CMD, release, NULL);
|
|
}
|
|
|
|
int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size,
|
|
int type, struct qxl_release **release,
|
|
struct qxl_bo **rbo)
|
|
{
|
|
struct qxl_bo *bo;
|
|
int idr_ret;
|
|
int ret = 0;
|
|
union qxl_release_info *info;
|
|
int cur_idx;
|
|
|
|
if (type == QXL_RELEASE_DRAWABLE)
|
|
cur_idx = 0;
|
|
else if (type == QXL_RELEASE_SURFACE_CMD)
|
|
cur_idx = 1;
|
|
else if (type == QXL_RELEASE_CURSOR_CMD)
|
|
cur_idx = 2;
|
|
else {
|
|
DRM_ERROR("got illegal type: %d\n", type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
idr_ret = qxl_release_alloc(qdev, type, release);
|
|
if (idr_ret < 0) {
|
|
if (rbo)
|
|
*rbo = NULL;
|
|
return idr_ret;
|
|
}
|
|
|
|
mutex_lock(&qdev->release_mutex);
|
|
if (qdev->current_release_bo_offset[cur_idx] + 1 >= releases_per_bo[cur_idx]) {
|
|
qxl_bo_unref(&qdev->current_release_bo[cur_idx]);
|
|
qdev->current_release_bo_offset[cur_idx] = 0;
|
|
qdev->current_release_bo[cur_idx] = NULL;
|
|
}
|
|
if (!qdev->current_release_bo[cur_idx]) {
|
|
ret = qxl_release_bo_alloc(qdev, &qdev->current_release_bo[cur_idx]);
|
|
if (ret) {
|
|
mutex_unlock(&qdev->release_mutex);
|
|
qxl_release_free(qdev, *release);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
bo = qxl_bo_ref(qdev->current_release_bo[cur_idx]);
|
|
|
|
(*release)->release_offset = qdev->current_release_bo_offset[cur_idx] * release_size_per_bo[cur_idx];
|
|
qdev->current_release_bo_offset[cur_idx]++;
|
|
|
|
if (rbo)
|
|
*rbo = bo;
|
|
|
|
mutex_unlock(&qdev->release_mutex);
|
|
|
|
ret = qxl_release_list_add(*release, bo);
|
|
qxl_bo_unref(&bo);
|
|
if (ret) {
|
|
qxl_release_free(qdev, *release);
|
|
return ret;
|
|
}
|
|
|
|
info = qxl_release_map(qdev, *release);
|
|
info->id = idr_ret;
|
|
qxl_release_unmap(qdev, *release, info);
|
|
|
|
return ret;
|
|
}
|
|
|
|
struct qxl_release *qxl_release_from_id_locked(struct qxl_device *qdev,
|
|
uint64_t id)
|
|
{
|
|
struct qxl_release *release;
|
|
|
|
spin_lock(&qdev->release_idr_lock);
|
|
release = idr_find(&qdev->release_idr, id);
|
|
spin_unlock(&qdev->release_idr_lock);
|
|
if (!release) {
|
|
DRM_ERROR("failed to find id in release_idr\n");
|
|
return NULL;
|
|
}
|
|
|
|
return release;
|
|
}
|
|
|
|
union qxl_release_info *qxl_release_map(struct qxl_device *qdev,
|
|
struct qxl_release *release)
|
|
{
|
|
void *ptr;
|
|
union qxl_release_info *info;
|
|
struct qxl_bo_list *entry = list_first_entry(&release->bos, struct qxl_bo_list, tv.head);
|
|
struct qxl_bo *bo = to_qxl_bo(entry->tv.bo);
|
|
|
|
ptr = qxl_bo_kmap_atomic_page(qdev, bo, release->release_offset & PAGE_SIZE);
|
|
if (!ptr)
|
|
return NULL;
|
|
info = ptr + (release->release_offset & ~PAGE_SIZE);
|
|
return info;
|
|
}
|
|
|
|
void qxl_release_unmap(struct qxl_device *qdev,
|
|
struct qxl_release *release,
|
|
union qxl_release_info *info)
|
|
{
|
|
struct qxl_bo_list *entry = list_first_entry(&release->bos, struct qxl_bo_list, tv.head);
|
|
struct qxl_bo *bo = to_qxl_bo(entry->tv.bo);
|
|
void *ptr;
|
|
|
|
ptr = ((void *)info) - (release->release_offset & ~PAGE_SIZE);
|
|
qxl_bo_kunmap_atomic_page(qdev, bo, ptr);
|
|
}
|
|
|
|
void qxl_release_fence_buffer_objects(struct qxl_release *release)
|
|
{
|
|
struct ttm_buffer_object *bo;
|
|
struct ttm_bo_global *glob;
|
|
struct ttm_bo_device *bdev;
|
|
struct ttm_bo_driver *driver;
|
|
struct qxl_bo *qbo;
|
|
struct ttm_validate_buffer *entry;
|
|
struct qxl_device *qdev;
|
|
|
|
/* if only one object on the release its the release itself
|
|
since these objects are pinned no need to reserve */
|
|
if (list_is_singular(&release->bos) || list_empty(&release->bos))
|
|
return;
|
|
|
|
bo = list_first_entry(&release->bos, struct ttm_validate_buffer, head)->bo;
|
|
bdev = bo->bdev;
|
|
qdev = container_of(bdev, struct qxl_device, mman.bdev);
|
|
|
|
/*
|
|
* Since we never really allocated a context and we don't want to conflict,
|
|
* set the highest bits. This will break if we really allow exporting of dma-bufs.
|
|
*/
|
|
fence_init(&release->base, &qxl_fence_ops, &qdev->release_lock,
|
|
release->id | 0xf0000000, release->base.seqno);
|
|
trace_fence_emit(&release->base);
|
|
|
|
driver = bdev->driver;
|
|
glob = bo->glob;
|
|
|
|
spin_lock(&glob->lru_lock);
|
|
|
|
list_for_each_entry(entry, &release->bos, head) {
|
|
bo = entry->bo;
|
|
qbo = to_qxl_bo(bo);
|
|
|
|
reservation_object_add_shared_fence(bo->resv, &release->base);
|
|
ttm_bo_add_to_lru(bo);
|
|
__ttm_bo_unreserve(bo);
|
|
}
|
|
spin_unlock(&glob->lru_lock);
|
|
ww_acquire_fini(&release->ticket);
|
|
}
|
|
|