[PATCH weston 3/3 v4] simple-dmabuf-drm: use GBM generic calls
Emilio Pozuelo Monfort
pochu27 at gmail.com
Thu Jul 12 11:46:25 UTC 2018
No need to write libdrm driver specific code for each supported
driver, we can just let GBM call the right one for us now.
Signed-off-by: Emilio Pozuelo Monfort <emilio.pozuelo at collabora.co.uk>
---
v4: now with working NV12, (thanks Daniel!).
clients/simple-dmabuf-drm.c | 411 ++++++++----------------------------
configure.ac | 2 +-
2 files changed, 90 insertions(+), 323 deletions(-)
diff --git a/clients/simple-dmabuf-drm.c b/clients/simple-dmabuf-drm.c
index 4f1da878..198d88e8 100644
--- a/clients/simple-dmabuf-drm.c
+++ b/clients/simple-dmabuf-drm.c
@@ -41,21 +41,11 @@
#include <getopt.h>
#include <errno.h>
-#include <xf86drm.h>
-
-#ifdef HAVE_LIBDRM_INTEL
-#include <i915_drm.h>
-#include <intel_bufmgr.h>
-#endif
-#ifdef HAVE_LIBDRM_FREEDRENO
-#include <freedreno/freedreno_drmif.h>
-#endif
-#ifdef HAVE_LIBDRM_ETNAVIV
-#include <etnaviv_drmif.h>
-#endif
+#include <gbm.h>
#include <drm_fourcc.h>
#include <wayland-client.h>
+#include "shared/helpers.h"
#include "shared/zalloc.h"
#include "xdg-shell-unstable-v6-client-protocol.h"
#include "fullscreen-shell-unstable-v1-client-protocol.h"
@@ -65,14 +55,10 @@
#define DRM_FORMAT_MOD_LINEAR 0
#endif
-struct buffer;
-
/* Possible options that affect the displayed image */
#define OPT_Y_INVERTED 1 /* contents has y axis inverted */
#define OPT_IMMEDIATE 2 /* create wl_buffer immediately */
-#define ALIGN(v, a) ((v + a - 1) & ~(a - 1))
-
struct display {
struct wl_display *display;
struct wl_registry *registry;
@@ -86,46 +72,24 @@ struct display {
int req_dmabuf_immediate;
};
-struct drm_device {
- int fd;
- char *name;
-
- int (*alloc_bo)(struct buffer *buf);
- void (*free_bo)(struct buffer *buf);
- int (*export_bo_to_prime)(struct buffer *buf);
- int (*map_bo)(struct buffer *buf);
- void (*unmap_bo)(struct buffer *buf);
- void (*device_destroy)(struct buffer *buf);
-};
-
struct buffer {
struct wl_buffer *buffer;
int busy;
- struct drm_device *dev;
int drm_fd;
+ struct gbm_device *dev;
+ struct gbm_bo *bo;
+ struct gbm_bo *bo2;
-#ifdef HAVE_LIBDRM_INTEL
- drm_intel_bufmgr *bufmgr;
- drm_intel_bo *intel_bo;
-#endif /* HAVE_LIBDRM_INTEL */
-#if HAVE_LIBDRM_FREEDRENO
- struct fd_device *fd_dev;
- struct fd_bo *fd_bo;
-#endif /* HAVE_LIBDRM_FREEDRENO */
-#if HAVE_LIBDRM_ETNAVIV
- struct etna_device *etna_dev;
- struct etna_bo *etna_bo;
-#endif /* HAVE_LIBDRM_ETNAVIV */
-
- uint32_t gem_handle;
int dmabuf_fd;
- uint8_t *mmap;
+ int dmabuf_fd2;
+ void *mmap;
+ void *mmap2;
int width;
int height;
- int bpp;
- unsigned long stride;
+ uint32_t stride;
+ uint32_t stride2;
int format;
};
@@ -161,170 +125,6 @@ static const struct wl_buffer_listener buffer_listener = {
buffer_release
};
-
-#ifdef HAVE_LIBDRM_INTEL
-static int
-intel_alloc_bo(struct buffer *my_buf)
-{
- /* XXX: try different tiling modes for testing FB modifiers. */
- uint32_t tiling = I915_TILING_NONE;
-
- assert(my_buf->bufmgr);
-
- my_buf->intel_bo = drm_intel_bo_alloc_tiled(my_buf->bufmgr, "test",
- my_buf->width, my_buf->height,
- (my_buf->bpp / 8), &tiling,
- &my_buf->stride, 0);
-
- printf("buffer allocated w %d, h %d, stride %lu, size %lu\n",
- my_buf->width, my_buf->height, my_buf->stride, my_buf->intel_bo->size);
-
- if (!my_buf->intel_bo)
- return 0;
-
- if (tiling != I915_TILING_NONE)
- return 0;
-
- return 1;
-}
-
-static void
-intel_free_bo(struct buffer *my_buf)
-{
- drm_intel_bo_unreference(my_buf->intel_bo);
-}
-
-static int
-intel_map_bo(struct buffer *my_buf)
-{
- if (drm_intel_gem_bo_map_gtt(my_buf->intel_bo) != 0)
- return 0;
-
- my_buf->mmap = my_buf->intel_bo->virtual;
-
- return 1;
-}
-
-static int
-intel_bo_export_to_prime(struct buffer *buffer)
-{
- return drm_intel_bo_gem_export_to_prime(buffer->intel_bo, &buffer->dmabuf_fd);
-}
-
-static void
-intel_unmap_bo(struct buffer *my_buf)
-{
- drm_intel_gem_bo_unmap_gtt(my_buf->intel_bo);
-}
-
-static void
-intel_device_destroy(struct buffer *my_buf)
-{
- drm_intel_bufmgr_destroy(my_buf->bufmgr);
-}
-
-#endif /* HAVE_LIBDRM_INTEL */
-#ifdef HAVE_LIBDRM_FREEDRENO
-
-static int
-fd_alloc_bo(struct buffer *buf)
-{
- int flags = DRM_FREEDRENO_GEM_CACHE_WCOMBINE;
- int size;
-
- buf->fd_dev = fd_device_new(buf->drm_fd);
- buf->stride = ALIGN(buf->width, 32) * buf->bpp / 8;
- size = buf->stride * buf->height;
- buf->fd_dev = fd_device_new(buf->drm_fd);
- buf->fd_bo = fd_bo_new(buf->fd_dev, size, flags);
-
- if (!buf->fd_bo)
- return 0;
- return 1;
-}
-
-static void
-fd_free_bo(struct buffer *buf)
-{
- fd_bo_del(buf->fd_bo);
-}
-
-static int
-fd_bo_export_to_prime(struct buffer *buf)
-{
- buf->dmabuf_fd = fd_bo_dmabuf(buf->fd_bo);
- return buf->dmabuf_fd < 0;
-}
-
-static int
-fd_map_bo(struct buffer *buf)
-{
- buf->mmap = fd_bo_map(buf->fd_bo);
- return buf->mmap != NULL;
-}
-
-static void
-fd_unmap_bo(struct buffer *buf)
-{
-}
-
-static void
-fd_device_destroy(struct buffer *buf)
-{
- fd_device_del(buf->fd_dev);
-}
-#endif /* HAVE_LIBDRM_FREEDRENO */
-#ifdef HAVE_LIBDRM_ETNAVIV
-
-static int
-etna_alloc_bo(struct buffer *buf)
-{
- int flags = DRM_ETNA_GEM_CACHE_WC;
- int size;
-
- buf->stride = ALIGN(buf->width, 32) * buf->bpp / 8;
- size = buf->stride * buf->height;
- buf->etna_dev = etna_device_new(buf->drm_fd);
- buf->etna_bo = etna_bo_new(buf->etna_dev, size, flags);
-
- return buf->etna_bo != NULL;
-}
-
-static void
-etna_free_bo(struct buffer *buf)
-{
- etna_bo_del(buf->etna_bo);
-}
-
-static int
-etna_bo_export_to_prime(struct buffer *buf)
-{
- buf->dmabuf_fd = etna_bo_dmabuf(buf->etna_bo);
- return buf->dmabuf_fd < 0;
-}
-
-static int
-etna_map_bo(struct buffer *buf)
-{
- buf->mmap = etna_bo_map(buf->etna_bo);
- return buf->mmap != NULL;
-}
-
-static void
-etna_unmap_bo(struct buffer *buf)
-{
- if (munmap(buf->mmap, buf->stride * buf->height) < 0)
- fprintf(stderr, "Failed to unmap buffer: %s", strerror(errno));
- buf->mmap = NULL;
-}
-
-static void
-etna_device_destroy(struct buffer *buf)
-{
- etna_device_del(buf->etna_dev);
-}
-#endif /* HAVE_LIBDRM_ENTAVIV */
-
static void
fill_content(struct buffer *my_buf, uint64_t modifier)
{
@@ -343,17 +143,16 @@ fill_content(struct buffer *my_buf, uint64_t modifier)
}
else if (modifier == DRM_FORMAT_MOD_LINEAR) {
uint8_t *pix8;
- /* first plane: Y (2/3 of the buffer) */
- for (y = 0; y < my_buf->height * 2/3; y++) {
+ /* first plane: Y */
+ for (y = 0; y < my_buf->height; y++) {
pix8 = my_buf->mmap + y * my_buf->stride;
for (x = 0; x < my_buf->width; x++)
- *pix8++ = x % 0xff;
+ *pix8++ = x % 256;
}
- /* second plane (CbCr) is half the size of Y
- plane (last 1/3 of the buffer) */
- for (y = my_buf->height * 2/3; y < my_buf->height; y++) {
- pix8 = my_buf->mmap + y * my_buf->stride;
- for (x = 0; x < my_buf->width; x+=2) {
+ /* second plane (CbCr) is half the size of Y */
+ for (y = 0; y < my_buf->height; y++) {
+ pix8 = my_buf->mmap2 + y * my_buf->stride2;
+ for (x = 0; x < my_buf->width; x++) {
*pix8++ = x % 256;
*pix8++ = y % 256;
}
@@ -371,69 +170,26 @@ fill_content(struct buffer *my_buf, uint64_t modifier)
}
static void
-drm_device_destroy(struct buffer *buf)
+buffer_free(struct buffer *buf)
{
- buf->dev->device_destroy(buf);
- close(buf->drm_fd);
-}
+ if (buf->buffer)
+ wl_buffer_destroy(buf->buffer);
-static int
-drm_device_init(struct buffer *buf)
-{
- struct drm_device *dev = calloc(1, sizeof(struct drm_device));
+ if (buf->bo)
+ gbm_bo_destroy(buf->bo);
+ if (buf->bo2)
+ gbm_bo_destroy(buf->bo2);
- drmVersionPtr version = drmGetVersion(buf->drm_fd);
+ close(buf->dmabuf_fd);
+ close(buf->dmabuf_fd2);
- dev->fd = buf->drm_fd;
- dev->name = strdup(version->name);
- if (0) {
- /* nothing */
- }
-#ifdef HAVE_LIBDRM_INTEL
- else if (!strcmp(dev->name, "i915")) {
- buf->bufmgr = drm_intel_bufmgr_gem_init(buf->drm_fd, 32);
- if (!buf->bufmgr)
- return 0;
- dev->alloc_bo = intel_alloc_bo;
- dev->free_bo = intel_free_bo;
- dev->export_bo_to_prime = intel_bo_export_to_prime;
- dev->map_bo = intel_map_bo;
- dev->unmap_bo = intel_unmap_bo;
- dev->device_destroy = intel_device_destroy;
- }
-#endif
-#ifdef HAVE_LIBDRM_FREEDRENO
- else if (!strcmp(dev->name, "msm")) {
- dev->alloc_bo = fd_alloc_bo;
- dev->free_bo = fd_free_bo;
- dev->export_bo_to_prime = fd_bo_export_to_prime;
- dev->map_bo = fd_map_bo;
- dev->unmap_bo = fd_unmap_bo;
- dev->device_destroy = fd_device_destroy;
- }
-#endif
-#ifdef HAVE_LIBDRM_ETNAVIV
- else if (!strcmp(dev->name, "etnaviv")) {
- dev->alloc_bo = etna_alloc_bo;
- dev->free_bo = etna_free_bo;
- dev->export_bo_to_prime = etna_bo_export_to_prime;
- dev->map_bo = etna_map_bo;
- dev->unmap_bo = etna_unmap_bo;
- dev->device_destroy = etna_device_destroy;
- }
-#endif
- else {
- fprintf(stderr, "Error: drm device %s unsupported.\n",
- dev->name);
- free(dev);
- return 0;
- }
- buf->dev = dev;
- return 1;
+ if (buf->dev)
+ gbm_device_destroy(buf->dev);
+ close(buf->drm_fd);
}
-static int
-drm_connect(struct buffer *my_buf)
+static struct gbm_device *
+gbm_connect(struct buffer *my_buf)
{
/* This won't work with card0 as we need to be authenticated; instead,
* boot with drm.rnodes=1 and use that. */
@@ -441,16 +197,9 @@ drm_connect(struct buffer *my_buf)
if (my_buf->drm_fd < 0)
return 0;
- return drm_device_init(my_buf);
+ return my_buf->dev = gbm_create_device(my_buf->drm_fd);
}
-static void
-drm_shutdown(struct buffer *my_buf)
-{
- drm_device_destroy(my_buf);
-}
-
-
static void
create_succeeded(void *data,
struct zwp_linux_buffer_params_v1 *params,
@@ -482,54 +231,80 @@ static const struct zwp_linux_buffer_params_v1_listener params_listener = {
create_failed
};
+static struct gbm_bo *
+create_bo(struct buffer *buffer, int format, const uint64_t *modifiers, const unsigned int count)
+{
+ struct gbm_bo *bo;
+
+ if (!modifiers)
+ bo = gbm_bo_create(buffer->dev, buffer->width, buffer->height, format, 0 /* usage */);
+ else
+ bo = gbm_bo_create_with_modifiers(buffer->dev, buffer->width, buffer->height, GBM_FORMAT_GR88,
+ modifiers, count);
+
+ if (!bo)
+ fprintf(stderr, "bo_create failed\n");
+
+ return bo;
+}
+
static int
create_dmabuf_buffer(struct display *display, struct buffer *buffer,
int width, int height, int format, uint32_t opts)
{
struct zwp_linux_buffer_params_v1 *params;
- uint64_t modifier = 0;
+ uint64_t modifier = 0, modifier2 = 0;
uint32_t flags = 0;
- struct drm_device *drm_dev;
- if (!drm_connect(buffer)) {
- fprintf(stderr, "drm_connect failed\n");
+ if (!gbm_connect(buffer)) {
+ fprintf(stderr, "gbm_device_connect failed\n");
goto error;
}
- drm_dev = buffer->dev;
buffer->width = width;
+ buffer->height = height;
+ buffer->format = format;
switch (format) {
case DRM_FORMAT_NV12:
- /* adjust height for allocation of NV12 Y and UV planes */
- buffer->height = height * 3 / 2;
- buffer->bpp = 8;
modifier = display->nv12_modifier;
break;
- default:
- buffer->height = height;
- buffer->bpp = 32;
}
- buffer->format = format;
- if (!drm_dev->alloc_bo(buffer)) {
- fprintf(stderr, "alloc_bo failed\n");
- goto error1;
+ if (format == DRM_FORMAT_XRGB8888) {
+ if ((buffer->bo = create_bo(buffer, format, NULL, 0)) == NULL)
+ goto error;
+ } else {
+ uint64_t modifiers[] = { modifier };
+
+ if ((buffer->bo = create_bo(buffer, GBM_FORMAT_R8, modifiers, ARRAY_LENGTH(modifiers))) == NULL)
+ goto error;
+ if ((buffer->bo2 = create_bo(buffer, GBM_FORMAT_GR88, modifiers, ARRAY_LENGTH(modifiers))) == NULL)
+ goto error;
}
- if (!drm_dev->map_bo(buffer)) {
+ if ((buffer->mmap = gbm_bo_map(buffer->bo, 0 /* x */, 0 /* y */, width, height,
+ 0 /* flags */, &buffer->stride, &buffer->mmap)) == NULL) {
fprintf(stderr, "map_bo failed\n");
- goto error2;
+ goto error;
}
- fill_content(buffer, modifier);
- drm_dev->unmap_bo(buffer);
- if (drm_dev->export_bo_to_prime(buffer) != 0) {
- fprintf(stderr, "gem_export_to_prime failed\n");
- goto error2;
+ if (format == DRM_FORMAT_NV12 &&
+ (buffer->mmap2 = gbm_bo_map(buffer->bo2, 0 /* x */, 0 /* y */, width, height,
+ 0 /* flags */, &buffer->stride2, &buffer->mmap2)) == NULL) {
+ fprintf(stderr, "map_bo failed\n");
+ goto error;
}
- if (buffer->dmabuf_fd < 0) {
+
+ modifier = gbm_bo_get_modifier(buffer->bo);
+ fill_content(buffer, modifier);
+ gbm_bo_unmap(buffer->bo, buffer->mmap);
+ if (buffer->bo2) gbm_bo_unmap(buffer->bo2, buffer->mmap2);
+
+ buffer->dmabuf_fd = gbm_bo_get_fd(buffer->bo);
+ if (buffer->bo2) buffer->dmabuf_fd2 = gbm_bo_get_fd(buffer->bo2);
+ if (buffer->dmabuf_fd < 0 || buffer->dmabuf_fd2 < 0) {
fprintf(stderr, "error: dmabuf_fd < 0\n");
- goto error2;
+ goto error;
}
/* We now have a dmabuf! For format XRGB8888, it should contain 2x2
@@ -554,12 +329,12 @@ create_dmabuf_buffer(struct display *display, struct buffer *buffer,
if (format == DRM_FORMAT_NV12) {
/* add the second plane params */
zwp_linux_buffer_params_v1_add(params,
- buffer->dmabuf_fd,
+ buffer->dmabuf_fd2,
1,
- buffer->width * buffer->height,
- buffer->stride,
- modifier >> 32,
- modifier & 0xffffffff);
+ 0,
+ buffer->stride2,
+ modifier2 >> 32,
+ modifier2 & 0xffffffff);
}
zwp_linux_buffer_params_v1_add_listener(params, ¶ms_listener, buffer);
if (display->req_dmabuf_immediate) {
@@ -579,11 +354,8 @@ create_dmabuf_buffer(struct display *display, struct buffer *buffer,
return 0;
-error2:
- drm_dev->free_bo(buffer);
-error1:
- drm_shutdown(buffer);
error:
+ buffer_free(buffer);
return -1;
}
@@ -685,7 +457,6 @@ create_window(struct display *display, int width, int height, int format,
static void
destroy_window(struct window *window)
{
- struct drm_device* dev;
int i;
if (window->callback)
@@ -695,11 +466,7 @@ destroy_window(struct window *window)
if (!window->buffers[i].buffer)
continue;
- wl_buffer_destroy(window->buffers[i].buffer);
- dev = window->buffers[i].dev;
- dev->free_bo(&window->buffers[i]);
- close(window->buffers[i].dmabuf_fd);
- drm_shutdown(&window->buffers[i]);
+ buffer_free(&window->buffers[i]);
}
if (window->xdg_toplevel)
diff --git a/configure.ac b/configure.ac
index 1ecba972..08a5c7b1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -391,7 +391,7 @@ AC_ARG_ENABLE(simple-dmabuf-drm-client,
[do not build the simple dmabuf drm client]),,
enable_simple_dmabuf_drm_client="auto")
if ! test "x$enable_simple_dmabuf_drm_client" = "xno"; then
- PKG_CHECK_MODULES(SIMPLE_DMABUF_DRM_CLIENT, [wayland-client libdrm], [have_simple_dmabuf_libs=yes],
+ PKG_CHECK_MODULES(SIMPLE_DMABUF_DRM_CLIENT, [wayland-client libdrm gbm], [have_simple_dmabuf_libs=yes],
[have_simple_dmabuf_libs=no])
PKG_CHECK_MODULES(LIBDRM_PLATFORM_FREEDRENO, [libdrm_freedreno],
--
2.18.0
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