igt_create_bo_with_dimensions() is intended to abstract differences
between drivers in buffer object creation.

The driver-specific ioctls will be called if the driver that is being
tested can satisfy the needs of the calling subtest, or it will be
skipped otherwise.

Signed-off-by: Tomeu Vizoso <[email protected]>
---

Changes in v2:
- Call kmstest_dumb_create instead of dumb_create from
  igt_create_bo_with_dimensions.
- Add missing gtkdoc to igt_create_bo_with_dimensions.
- Try to use GEM API when a stride is passed

 lib/igt_fb.c | 102 +++++++++++++++++++++++++++++++++++++++++++++--------------
 lib/igt_fb.h |   6 ++++
 2 files changed, 84 insertions(+), 24 deletions(-)

diff --git a/lib/igt_fb.c b/lib/igt_fb.c
index 361f94627659..c4c518bdb777 100644
--- a/lib/igt_fb.c
+++ b/lib/igt_fb.c
@@ -31,6 +31,7 @@
 
 #include "drmtest.h"
 #include "igt_fb.h"
+#include "igt_kms.h"
 #include "ioctl_wrappers.h"
 #include "intel_chipset.h"
 
@@ -178,30 +179,84 @@ void igt_calc_fb_size(int fd, int width, int height, int 
bpp, uint64_t tiling,
        *size_ret = size;
 }
 
+/**
+ * igt_create_bo_with_dimensions:
+ * @fd: open drm file descriptor
+ * @width: width of the buffer object in pixels
+ * @height: height of the buffer object in pixels
+ * @format: drm fourcc pixel format code
+ * @modifier: modifier corresponding to the tiling layout of the buffer object
+ * @stride: stride of the buffer object in bytes (0 for automatic stride)
+ * @size_ret: size of the buffer object as created by the kernel
+ * @stride_ret: stride of the buffer object as created by the kernel
+ * @is_dumb: whether the created buffer object is a dumb buffer or not
+ *
+ * This function allocates a gem buffer object matching the requested
+ * properties.
+ *
+ * Returns:
+ * The kms id of the created buffer object.
+ */
+int igt_create_bo_with_dimensions(int fd, int width, int height,
+                                 uint32_t format, uint64_t modifier,
+                                 unsigned stride, unsigned *size_ret,
+                                 unsigned *stride_ret, bool *is_dumb)
+{
+       int bpp = igt_drm_format_to_bpp(format);
+       int bo;
+
+       if (modifier || stride) {
+               unsigned size, calculated_stride;
+
+               igt_calc_fb_size(fd, width, height, bpp, modifier, &size,
+                                &calculated_stride);
+               if (stride == 0)
+                       stride = calculated_stride;
+
+               if (is_dumb)
+                       *is_dumb = false;
+
+               if (is_i915_device(fd)) {
+
+                       bo = gem_create(fd, size);
+                       gem_set_tiling(fd, bo, modifier, stride);
+
+                       if (size_ret)
+                               *size_ret = size;
+
+                       if (stride_ret)
+                               *stride_ret = stride;
+
+                       return bo;
+               } else {
+                       bool driver_has_tiling_support = false;
+
+                       igt_require(driver_has_tiling_support);
+                       return -EINVAL;
+               }
+       } else {
+               if (is_dumb)
+                       *is_dumb = true;
+
+               return kmstest_dumb_create(fd, width, height, bpp, stride_ret,
+                                          size_ret);
+       }
+}
+
 /* helpers to create nice-looking framebuffers */
-static int create_bo_for_fb(int fd, int width, int height, int bpp,
+static int create_bo_for_fb(int fd, int width, int height, uint32_t format,
                            uint64_t tiling, unsigned bo_size,
                            unsigned bo_stride, uint32_t *gem_handle_ret,
-                           unsigned *size_ret, unsigned *stride_ret)
+                           unsigned *size_ret, unsigned *stride_ret,
+                           bool *is_dumb)
 {
        uint32_t gem_handle;
        int ret = 0;
-       unsigned size, stride;
-
-       igt_calc_fb_size(fd, width, height, bpp, tiling, &size, &stride);
-       if (bo_size == 0)
-               bo_size = size;
-       if (bo_stride == 0)
-               bo_stride = stride;
 
-       gem_handle = gem_create(fd, bo_size);
+       gem_handle = igt_create_bo_with_dimensions(fd, width, height, format,
+                                                  tiling, bo_stride, size_ret,
+                                                  stride_ret, is_dumb);
 
-       if (tiling == LOCAL_I915_FORMAT_MOD_X_TILED)
-               ret = __gem_set_tiling(fd, gem_handle, I915_TILING_X,
-                                      bo_stride);
-
-       *stride_ret = bo_stride;
-       *size_ret = bo_size;
        *gem_handle_ret = gem_handle;
 
        return ret;
@@ -505,17 +560,14 @@ igt_create_fb_with_bo_size(int fd, int width, int height,
                           unsigned bo_stride)
 {
        uint32_t fb_id;
-       int bpp;
 
        memset(fb, 0, sizeof(*fb));
 
-       bpp = igt_drm_format_to_bpp(format);
-
-       igt_debug("%s(width=%d, height=%d, format=0x%x [bpp=%d], 
tiling=0x%"PRIx64", size=%d)\n",
-                 __func__, width, height, format, bpp, tiling, bo_size);
-       do_or_die(create_bo_for_fb(fd, width, height, bpp, tiling, bo_size,
+       igt_debug("%s(width=%d, height=%d, format=0x%x, tiling=0x%"PRIx64", 
size=%d)\n",
+                 __func__, width, height, format, tiling, bo_size);
+       do_or_die(create_bo_for_fb(fd, width, height, format, tiling, bo_size,
                                   bo_stride, &fb->gem_handle, &fb->size,
-                                  &fb->stride));
+                                  &fb->stride, &fb->is_dumb));
 
        igt_debug("%s(handle=%d, pitch=%d)\n",
                  __func__, fb->gem_handle, fb->stride);
@@ -865,6 +917,7 @@ struct fb_blit_upload {
                uint32_t handle;
                unsigned size, stride;
                uint8_t *map;
+               bool is_dumb;
        } linear;
 };
 
@@ -933,7 +986,8 @@ static void create_cairo_surface__blit(int fd, struct 
igt_fb *fb)
                                LOCAL_DRM_FORMAT_MOD_NONE, 0, 0,
                                &blit->linear.handle,
                                &blit->linear.size,
-                               &blit->linear.stride);
+                               &blit->linear.stride,
+                               &blit->linear.is_dumb);
 
        igt_assert(ret == 0);
 
diff --git a/lib/igt_fb.h b/lib/igt_fb.h
index 91e91408b340..83217b5521fd 100644
--- a/lib/igt_fb.h
+++ b/lib/igt_fb.h
@@ -48,6 +48,7 @@ struct igt_fb {
        uint32_t fb_id;
        int fd;
        uint32_t gem_handle;
+       bool is_dumb;
        uint32_t drm_format;
        int width;
        int height;
@@ -100,6 +101,11 @@ unsigned int igt_create_stereo_fb(int drm_fd, 
drmModeModeInfo *mode,
 void igt_remove_fb(int fd, struct igt_fb *fb);
 int igt_dirty_fb(int fd, struct igt_fb *fb);
 
+int igt_create_bo_with_dimensions(int fd, int width, int height, uint32_t 
format,
+                                 uint64_t modifier, unsigned stride,
+                                 unsigned *stride_out, unsigned *size_out,
+                                 bool *is_dumb);
+
 /* cairo-based painting */
 cairo_t *igt_get_cairo_ctx(int fd, struct igt_fb *fb);
 void igt_paint_color(cairo_t *cr, int x, int y, int w, int h,
-- 
2.5.0

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