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Mesa/U_nouveau_create_only_one_shared_screen.patch

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From fee0686c21c631d96d6042741267a3c218c23ffc Mon Sep 17 00:00:00 2001
From: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date: Wed, 12 Feb 2014 13:56:53 +0000
Subject: nouveau: create only 1 shared screen between vdpau and opengl
This fixes bug 73200 "vdpau-GL interop fails due to different screen
objects" in the same way radeon does.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
---
diff --git a/src/gallium/drivers/nouveau/nouveau_screen.c b/src/gallium/drivers/nouveau/nouveau_screen.c
index 21b31e0..f742a94 100644
--- a/src/gallium/drivers/nouveau/nouveau_screen.c
+++ b/src/gallium/drivers/nouveau/nouveau_screen.c
@@ -144,6 +144,12 @@ nouveau_screen_init(struct nouveau_screen *screen, struct nouveau_device *dev)
if (nv_dbg)
nouveau_mesa_debug = atoi(nv_dbg);
+ /*
+ * this is initialized to 1 in nouveau_drm_screen_create after screen
+ * is fully constructed and added to the global screen list.
+ */
+ screen->refcount = -1;
+
if (dev->chipset < 0xc0) {
data = &nv04_data;
size = sizeof(nv04_data);
diff --git a/src/gallium/drivers/nouveau/nouveau_screen.h b/src/gallium/drivers/nouveau/nouveau_screen.h
index 51e24fa..cf06f7e 100644
--- a/src/gallium/drivers/nouveau/nouveau_screen.h
+++ b/src/gallium/drivers/nouveau/nouveau_screen.h
@@ -22,6 +22,8 @@ struct nouveau_screen {
struct nouveau_client *client;
struct nouveau_pushbuf *pushbuf;
+ int refcount;
+
unsigned vidmem_bindings; /* PIPE_BIND_* where VRAM placement is desired */
unsigned sysmem_bindings; /* PIPE_BIND_* where GART placement is desired */
unsigned lowmem_bindings; /* PIPE_BIND_* that require an address < 4 GiB */
@@ -112,6 +114,8 @@ nouveau_screen(struct pipe_screen *pscreen)
return (struct nouveau_screen *)pscreen;
}
+boolean nouveau_drm_screen_unref(struct nouveau_screen *screen);
+
boolean
nouveau_screen_bo_get_handle(struct pipe_screen *pscreen,
struct nouveau_bo *bo,
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
index c027a5f..9854708 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -302,6 +302,9 @@ nv30_screen_destroy(struct pipe_screen *pscreen)
{
struct nv30_screen *screen = nv30_screen(pscreen);
+ if (!nouveau_drm_screen_unref(&screen->base))
+ return;
+
if (screen->base.fence.current &&
screen->base.fence.current->state >= NOUVEAU_FENCE_STATE_EMITTED) {
nouveau_fence_wait(screen->base.fence.current);
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index e636bf8..db3265f 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -287,6 +287,9 @@ nv50_screen_destroy(struct pipe_screen *pscreen)
{
struct nv50_screen *screen = nv50_screen(pscreen);
+ if (!nouveau_drm_screen_unref(&screen->base))
+ return;
+
if (screen->base.fence.current) {
nouveau_fence_wait(screen->base.fence.current);
nouveau_fence_ref (NULL, &screen->base.fence.current);
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index 28d9be2..f04771d 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -333,6 +333,9 @@ nvc0_screen_destroy(struct pipe_screen *pscreen)
{
struct nvc0_screen *screen = nvc0_screen(pscreen);
+ if (!nouveau_drm_screen_unref(&screen->base))
+ return;
+
if (screen->base.fence.current) {
nouveau_fence_wait(screen->base.fence.current);
nouveau_fence_ref(NULL, &screen->base.fence.current);
diff --git a/src/gallium/targets/dri-nouveau/Makefile.am b/src/gallium/targets/dri-nouveau/Makefile.am
index 1988067..4bd4e21 100644
--- a/src/gallium/targets/dri-nouveau/Makefile.am
+++ b/src/gallium/targets/dri-nouveau/Makefile.am
@@ -20,6 +20,7 @@
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
+DRI_VERSION_SCRIPT = $(srcdir)/nouveau_dri.link
include $(top_srcdir)/src/gallium/Automake.inc
AM_CFLAGS = \
diff --git a/src/gallium/targets/dri-nouveau/nouveau_dri.link b/src/gallium/targets/dri-nouveau/nouveau_dri.link
new file mode 100644
index 0000000..16015aa
--- a/dev/null
+++ b/src/gallium/targets/dri-nouveau/nouveau_dri.link
@@ -0,0 +1,6 @@
+VERSION {
+ global:
+ __driDriverExtensions;
+ nouveau_drm_screen_create;
+ local: *;
+};
diff --git a/src/gallium/winsys/nouveau/drm/nouveau_drm_winsys.c b/src/gallium/winsys/nouveau/drm/nouveau_drm_winsys.c
index e4f27f6..a077c48 100644
--- a/src/gallium/winsys/nouveau/drm/nouveau_drm_winsys.c
+++ b/src/gallium/winsys/nouveau/drm/nouveau_drm_winsys.c
@@ -1,24 +1,83 @@
+#include <sys/stat.h>
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "util/u_format.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
+#include "util/u_hash_table.h"
+#include "os/os_thread.h"
#include "nouveau_drm_public.h"
#include "nouveau/nouveau_winsys.h"
#include "nouveau/nouveau_screen.h"
-struct pipe_screen *
+static struct util_hash_table *fd_tab = NULL;
+
+pipe_static_mutex(nouveau_screen_mutex);
+
+boolean nouveau_drm_screen_unref(struct nouveau_screen *screen)
+{
+ int ret;
+ if (screen->refcount == -1)
+ return true;
+
+ pipe_mutex_lock(nouveau_screen_mutex);
+ ret = --screen->refcount;
+ assert(ret >= 0);
+ if (ret == 0)
+ util_hash_table_remove(fd_tab, intptr_to_pointer(screen->device->fd));
+ pipe_mutex_unlock(nouveau_screen_mutex);
+ return ret == 0;
+}
+
+static unsigned hash_fd(void *key)
+{
+ int fd = pointer_to_intptr(key);
+ struct stat stat;
+ fstat(fd, &stat);
+
+ return stat.st_dev ^ stat.st_ino ^ stat.st_rdev;
+}
+
+static int compare_fd(void *key1, void *key2)
+{
+ int fd1 = pointer_to_intptr(key1);
+ int fd2 = pointer_to_intptr(key2);
+ struct stat stat1, stat2;
+ fstat(fd1, &stat1);
+ fstat(fd2, &stat2);
+
+ return stat1.st_dev != stat2.st_dev ||
+ stat1.st_ino != stat2.st_ino ||
+ stat1.st_rdev != stat2.st_rdev;
+}
+
+PUBLIC struct pipe_screen *
nouveau_drm_screen_create(int fd)
{
struct nouveau_device *dev = NULL;
struct pipe_screen *(*init)(struct nouveau_device *);
+ struct nouveau_screen *screen;
int ret;
+ pipe_mutex_lock(nouveau_screen_mutex);
+ if (!fd_tab) {
+ fd_tab = util_hash_table_create(hash_fd, compare_fd);
+ if (!fd_tab)
+ goto err;
+ }
+
+ screen = util_hash_table_get(fd_tab, intptr_to_pointer(fd));
+ if (screen) {
+ screen->refcount++;
+ pipe_mutex_unlock(nouveau_screen_mutex);
+ return &screen->base;
+ }
+
ret = nouveau_device_wrap(fd, 0, &dev);
if (ret)
- return NULL;
+ goto err;
switch (dev->chipset & ~0xf) {
case 0x30:
@@ -42,8 +101,19 @@ nouveau_drm_screen_create(int fd)
default:
debug_printf("%s: unknown chipset nv%02x\n", __func__,
dev->chipset);
- return NULL;
+ goto err;
}
- return init(dev);
+ screen = (struct nouveau_screen*)init(dev);
+ if (!screen)
+ goto err;
+
+ util_hash_table_set(fd_tab, intptr_to_pointer(fd), screen);
+ screen->refcount = 1;
+ pipe_mutex_unlock(nouveau_screen_mutex);
+ return &screen->base;
+
+err:
+ pipe_mutex_unlock(nouveau_screen_mutex);
+ return NULL;
}
--
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