imx: gallium driver for imx-drm scanout driver

Changes from V1 -> V2:
 - updated Copyright
 - added $(top_srcdir)/src/gallium/winsys to include path (suggested by Emil)
 - adapted driver to new renderonly API

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Acked-by: Emil Velikov <emil.velikov@collabora.com>

configure.ac

@@ -1234,7 +1234,7 @@ GALLIUM_DRIVERS_DEFAULT="r300,r600,svga,swrast"
 AC_ARG_WITH([gallium-drivers],
     [AS_HELP_STRING([--with-gallium-drivers@<:@=DIRS...@:>@],
         [comma delimited Gallium drivers list, e.g.
-        "i915,ilo,nouveau,r300,r600,radeonsi,freedreno,svga,swrast,vc4,virgl,etnaviv"
+        "i915,ilo,nouveau,r300,r600,radeonsi,freedreno,svga,swrast,vc4,virgl,etnaviv,imx"
         @<:@default=r300,r600,svga,swrast@:>@])],
     [with_gallium_drivers="$withval"],
     [with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT"])
@@ -2512,6 +2512,9 @@ if test -n "$with_gallium_drivers"; then
             PKG_CHECK_MODULES([ETNAVIV], [libdrm_etnaviv >= $LIBDRM_ETNAVIV_REQUIRED])
             require_libdrm "etnaviv"
             ;;
+       ximx)
+            HAVE_GALLIUM_IMX=yes
+            ;;
         xswrast)
             HAVE_GALLIUM_SOFTPIPE=yes
             if test "x$MESA_LLVM" = x1 && test "x$enable_gallium_llvm" == "xyes";  then
@@ -2566,6 +2569,12 @@ if test "x$enable_gallium_llvm" == "xyes"; then
     llvm_add_default_components "gallium"
 fi
 
+dnl We need to validate some needed dependencies for renderonly drivers.
+
+if test "x$HAVE_GALLIUM_ETNAVIV" != xyes -a "x$HAVE_GALLIUM_IMX" == xyes  ; then
+    AC_ERROR([Building with imx requires etnaviv])
+fi
+
 dnl Set LLVM_LIBS - This is done after the driver configuration so
 dnl that drivers can add additional components to LLVM_COMPONENTS.
 dnl Previously, gallium drivers were updating LLVM_LIBS directly
@@ -2631,6 +2640,7 @@ AM_CONDITIONAL(HAVE_GALLIUM_RADEON_COMMON, test "x$HAVE_GALLIUM_R600" = xyes -o
 AM_CONDITIONAL(HAVE_GALLIUM_NOUVEAU, test "x$HAVE_GALLIUM_NOUVEAU" = xyes)
 AM_CONDITIONAL(HAVE_GALLIUM_FREEDRENO, test "x$HAVE_GALLIUM_FREEDRENO" = xyes)
 AM_CONDITIONAL(HAVE_GALLIUM_ETNAVIV, test "x$HAVE_GALLIUM_ETNAVIV" = xyes)
+AM_CONDITIONAL(HAVE_GALLIUM_IMX, test "x$HAVE_GALLIUM_IMX" = xyes)
 AM_CONDITIONAL(HAVE_GALLIUM_SOFTPIPE, test "x$HAVE_GALLIUM_SOFTPIPE" = xyes)
 AM_CONDITIONAL(HAVE_GALLIUM_LLVMPIPE, test "x$HAVE_GALLIUM_LLVMPIPE" = xyes)
 AM_CONDITIONAL(HAVE_GALLIUM_SWR, test "x$HAVE_GALLIUM_SWR" = xyes)
@@ -2785,6 +2795,7 @@ AC_CONFIG_FILES([Makefile
 		src/gallium/drivers/swr/Makefile
 		src/gallium/drivers/trace/Makefile
 		src/gallium/drivers/etnaviv/Makefile
+		src/gallium/drivers/imx/Makefile
 		src/gallium/drivers/vc4/Makefile
 		src/gallium/drivers/virgl/Makefile
 		src/gallium/state_trackers/clover/Makefile
@@ -2815,6 +2826,7 @@ AC_CONFIG_FILES([Makefile
 		src/gallium/tests/trivial/Makefile
 		src/gallium/tests/unit/Makefile
 		src/gallium/winsys/etnaviv/drm/Makefile
+		src/gallium/winsys/imx/drm/Makefile
 		src/gallium/winsys/freedreno/drm/Makefile
 		src/gallium/winsys/i915/drm/Makefile
 		src/gallium/winsys/intel/drm/Makefile

src/gallium/Makefile.am

@@ -72,6 +72,10 @@ if HAVE_GALLIUM_ETNAVIV
 SUBDIRS += drivers/etnaviv winsys/etnaviv/drm
 endif
 
+if HAVE_GALLIUM_IMX
+SUBDIRS += drivers/imx winsys/imx/drm
+endif
+
 ## swrast/softpipe
 if HAVE_GALLIUM_SOFTPIPE
 SUBDIRS += drivers/softpipe

src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c

@@ -158,6 +158,11 @@ static const struct drm_driver_descriptor driver_descriptors[] = {
         .driver_name = "etnaviv",
         .create_screen = pipe_etna_create_screen,
         .configuration = configuration_query,
+    },
+    {
+        .driver_name = "imx-drm",
+        .create_screen = pipe_imx_drm_create_screen,
+        .configuration = configuration_query,
     }
 };
 #endif

src/gallium/auxiliary/target-helpers/drm_helper.h

@@ -289,4 +289,28 @@ pipe_etna_create_screen(int fd)
 
 #endif
 
+#ifdef GALLIUM_IMX
+#include "imx/drm/imx_drm_public.h"
+
+struct pipe_screen *
+pipe_imx_drm_create_screen(int fd)
+{
+   struct pipe_screen *screen;
+
+   screen = imx_drm_screen_create(fd);
+   return screen ? debug_screen_wrap(screen) : NULL;
+}
+
+#else
+
+struct pipe_screen *
+pipe_imx_drm_create_screen(int fd)
+{
+   fprintf(stderr, "imx-drm: driver missing\n");
+   return NULL;
+}
+
+#endif
+
+
 #endif /* DRM_HELPER_H */

src/gallium/auxiliary/target-helpers/drm_helper_public.h

@@ -37,4 +37,7 @@ pipe_vc4_create_screen(int fd);
 struct pipe_screen *
 pipe_etna_create_screen(int fd);
 
+struct pipe_screen *
+pipe_imx_drm_create_screen(int fd);
+
 #endif /* _DRM_HELPER_PUBLIC_H */

src/gallium/drivers/imx/Automake.inc

@@ -0,0 +1,9 @@
+if HAVE_GALLIUM_IMX
+
+TARGET_DRIVERS += imx-drm
+TARGET_CPPFLAGS += -DGALLIUM_IMX
+TARGET_LIB_DEPS += \
+    $(top_builddir)/src/gallium/winsys/imx/drm/libimxdrm.la \
+    $(LIBDRM_LIBS)
+
+endif

src/gallium/drivers/imx/Makefile.am

@@ -0,0 +1,8 @@
+include $(top_srcdir)/src/gallium/Automake.inc
+
+AM_CPPFLAGS = \
+	$(GALLIUM_CFLAGS)
+
+noinst_LTLIBRARIES = libimx.la
+
+libimx_la_SOURCES =

src/gallium/targets/dri/Makefile.am

@@ -92,6 +92,7 @@ include $(top_srcdir)/src/gallium/drivers/vc4/Automake.inc
 include $(top_srcdir)/src/gallium/drivers/virgl/Automake.inc
 
 include $(top_srcdir)/src/gallium/drivers/etnaviv/Automake.inc
+include $(top_srcdir)/src/gallium/drivers/imx/Automake.inc
 
 include $(top_srcdir)/src/gallium/drivers/softpipe/Automake.inc
 include $(top_srcdir)/src/gallium/drivers/llvmpipe/Automake.inc

src/gallium/targets/dri/target.c

@@ -165,6 +165,14 @@ PUBLIC const __DRIextension **__driDriverGetExtensions_i965(void)
 
 #if defined(GALLIUM_ETNAVIV)
 
+const __DRIextension **__driDriverGetExtensions_imx_drm(void);
+
+PUBLIC const __DRIextension **__driDriverGetExtensions_imx_drm(void)
+{
+   globalDriverAPI = &galliumdrm_driver_api;
+   return galliumdrm_driver_extensions;
+}
+
 const __DRIextension **__driDriverGetExtensions_etnaviv(void);
 
 PUBLIC const __DRIextension **__driDriverGetExtensions_etnaviv(void)

src/gallium/winsys/imx/drm/Makefile.am

@@ -0,0 +1,33 @@
+# Copyright © 2012 Intel Corporation
+#
+# 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 (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
+# NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS 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 Makefile.sources
+include $(top_srcdir)/src/gallium/Automake.inc
+
+AM_CFLAGS = \
+	-I$(top_srcdir)/src/gallium/drivers \
+	-I$(top_srcdir)/src/gallium/winsys \
+	$(GALLIUM_WINSYS_CFLAGS)
+
+noinst_LTLIBRARIES = libimxdrm.la
+
+libimxdrm_la_SOURCES = $(C_SOURCES)

src/gallium/winsys/imx/drm/Makefile.sources

@@ -0,0 +1,3 @@
+C_SOURCES := \
+   imx_drm_public.h \
+   imx_drm_winsys.c

src/gallium/winsys/imx/drm/imx_drm_public.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2016 Christian Gmeiner <christian.gmeiner@gmail.com>
+ *
+ * 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 (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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors:
+ *    Christian Gmeiner <christian.gmeiner@gmail.com>
+ */
+
+#ifndef __IMX_DRM_PUBLIC_H__
+#define __IMX_DRM_PUBLIC_H__
+
+struct pipe_screen;
+
+struct pipe_screen *imx_drm_screen_create(int fd);
+
+#endif /* __IMX_DRM_PUBLIC_H__ */

src/gallium/winsys/imx/drm/imx_drm_winsys.c

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2016 Christian Gmeiner <christian.gmeiner@gmail.com>
+ *
+ * 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 (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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors:
+ *    Christian Gmeiner <christian.gmeiner@gmail.com>
+ */
+
+#include "imx_drm_public.h"
+#include "etnaviv/drm/etnaviv_drm_public.h"
+#include "renderonly/renderonly.h"
+
+#include <fcntl.h>
+#include <unistd.h>
+
+struct pipe_screen *imx_drm_screen_create(int fd)
+{
+   struct renderonly ro = {
+      .create_for_resource = renderonly_create_kms_dumb_buffer_for_resource,
+      .kms_fd = fd,
+      .gpu_fd = open("/dev/dri/renderD128", O_RDWR | O_CLOEXEC)
+   };
+
+   if (ro.gpu_fd < 0)
+      return NULL;
+
+   struct pipe_screen *screen = etna_drm_screen_create_renderonly(&ro);
+   if (!screen)
+      close(ro.gpu_fd);
+
+   return screen;
+}