From bff906304fc3175daad08072a14cda1002c3810f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Guido=20G=C3=BCnther?= <agx@sigxcpu.org>
Date: Tue, 20 Mar 2018 09:42:00 +0100
Subject: [PATCH] simple-dmabuf-drm: support etnaviv drm as well
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Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
---
 Makefile.am                 |  1 +
 clients/simple-dmabuf-drm.c | 68 +++++++++++++++++++++++++++++++++++++
 configure.ac                |  5 ++-
 3 files changed, 73 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 69ca6cba..64a8006c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -629,6 +629,7 @@ nodist_weston_simple_dmabuf_drm_SOURCES =		\
 weston_simple_dmabuf_drm_CFLAGS = $(AM_CFLAGS) $(SIMPLE_DMABUF_DRM_CLIENT_CFLAGS)
 weston_simple_dmabuf_drm_LDADD = $(SIMPLE_DMABUF_DRM_CLIENT_LIBS) \
 	$(LIBDRM_PLATFORM_FREEDRENO_LIBS) \
+	$(LIBDRM_PLATFORM_ETNAVIV_LIBS)   \
 	$(LIBDRM_PLATFORM_INTEL_LIBS)     \
 	libshared.la
 endif
diff --git a/clients/simple-dmabuf-drm.c b/clients/simple-dmabuf-drm.c
index cb04622f..e7a7b0ed 100644
--- a/clients/simple-dmabuf-drm.c
+++ b/clients/simple-dmabuf-drm.c
@@ -39,6 +39,7 @@
 #include <signal.h>
 #include <fcntl.h>
 #include <getopt.h>
+#include <errno.h>
 
 #include <xf86drm.h>
 
@@ -49,6 +50,9 @@
 #ifdef HAVE_LIBDRM_FREEDRENO
 #include <freedreno/freedreno_drmif.h>
 #endif
+#ifdef HAVE_LIBDRM_ETNAVIV
+#include <etnaviv_drmif.h>
+#endif
 #include <drm_fourcc.h>
 
 #include <wayland-client.h>
@@ -108,6 +112,10 @@ struct buffer {
 	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;
@@ -265,6 +273,56 @@ 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)
@@ -332,6 +390,16 @@ drm_device_init(struct buffer *buf)
 		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",
diff --git a/configure.ac b/configure.ac
index 1dce05fa..ba11b6c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -400,11 +400,14 @@ if ! test "x$enable_simple_dmabuf_drm_client" = "xno"; then
   PKG_CHECK_MODULES(LIBDRM_PLATFORM_INTEL, [libdrm_intel],
       AC_DEFINE([HAVE_LIBDRM_INTEL], [1], [Build intel dmabuf client]) have_simple_dmabuf_drm_client=yes,
       [true])
+  PKG_CHECK_MODULES(LIBDRM_PLATFORM_ETNAVIV, [libdrm_etnaviv],
+      AC_DEFINE([HAVE_LIBDRM_ETNAVIV], [1], [Build etnaviv dmabuf client]) have_simple_dmabuf_drm_client=yes,
+      [true])
 
   if test "x$have_simple_dmabuf_drm_client" != "xyes" -o \
 	  "x$have_simple_dmabuf_libs" = "xno" && \
      test "x$enable_simple_dmabuf_drm_client" = "xyes"; then
-    AC_MSG_ERROR([DRM dmabuf client explicitly enabled, but libdrm_intel or libdrm_freedreno not found])
+    AC_MSG_ERROR([DRM dmabuf client explicitly enabled, but none of libdrm_{intel,freedreno,etnaviv} found])
   fi
 
   if test "x$have_simple_dmabuf_drm_client" = "xyes" -a "x$have_simple_dmabuf_libs" = "xyes"; then