| Message ID | 20230120105858.214440-3-diogo.ivo@tecnico.ulisboa.pt (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/tegra: handle implicit scanout modifiers | expand |
Hi Diogo,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on tegra/for-next]
[also build test ERROR on drm/drm-next tegra-drm/drm/tegra/for-next linus/master v6.2-rc6 next-20230130]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Diogo-Ivo/drm-tegra-add-sector-layout-to-SET-GET_TILING-IOCTLs/20230120-190334
base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next
patch link: https://lore.kernel.org/r/20230120105858.214440-3-diogo.ivo%40tecnico.ulisboa.pt
patch subject: [PATCH 2/2] drm/tegra: add scanout support for implicit tiling parameters
config: arm64-randconfig-r016-20230130 (https://download.01.org/0day-ci/archive/20230131/202301310334.4oiy5KGY-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/fffef2135ccf679112cc60dee0532494c1389c78
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Diogo-Ivo/drm-tegra-add-sector-layout-to-SET-GET_TILING-IOCTLs/20230120-190334
git checkout fffef2135ccf679112cc60dee0532494c1389c78
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/drm/tegra/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
>> drivers/gpu/drm/tegra/fb.c:149:4: error: expected expression
unsigned long height = planes[0]->tiling.value;
^
>> drivers/gpu/drm/tegra/fb.c:151:8: error: use of undeclared identifier 'height'
if (height > 5) {
^
>> drivers/gpu/drm/tegra/fb.c:151:8: error: use of undeclared identifier 'height'
>> drivers/gpu/drm/tegra/fb.c:151:8: error: use of undeclared identifier 'height'
drivers/gpu/drm/tegra/fb.c:153:6: error: use of undeclared identifier 'height'
height);
^
drivers/gpu/drm/tegra/fb.c:159:49: error: use of undeclared identifier 'height'
modifier = DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(height);
^
6 errors generated.
vim +149 drivers/gpu/drm/tegra/fb.c
110
111 static struct drm_framebuffer *tegra_fb_alloc(struct drm_device *drm,
112 const struct drm_mode_fb_cmd2 *mode_cmd,
113 struct tegra_bo **planes,
114 unsigned int num_planes)
115 {
116 struct drm_framebuffer *fb;
117 unsigned int i;
118 int err;
119 struct drm_mode_fb_cmd2 mode_cmd_local;
120
121 fb = kzalloc(sizeof(*fb), GFP_KERNEL);
122 if (!fb)
123 return ERR_PTR(-ENOMEM);
124
125 /* Check for implicitly defined modifiers using
126 * the state defined by tegra_gem_set_tiling().
127 */
128 if (!(mode_cmd->flags & DRM_MODE_FB_MODIFIERS)) {
129 uint64_t modifier;
130
131 mode_cmd_local = *mode_cmd;
132
133 switch (planes[0]->tiling.mode) {
134 case TEGRA_BO_TILING_MODE_PITCH:
135 modifier = DRM_FORMAT_MOD_LINEAR;
136 break;
137
138 case TEGRA_BO_TILING_MODE_TILED:
139 modifier = DRM_FORMAT_MOD_NVIDIA_TEGRA_TILED;
140 break;
141
142 /* With all rigour this reconstruction of the modifier is
143 * incomplete, as it skips some fields (like page kind).
144 * However, along with the sector layout below it should
145 * contain all the bits of information needed by the
146 * scanout hardware.
147 */
148 case TEGRA_BO_TILING_MODE_BLOCK:
> 149 unsigned long height = planes[0]->tiling.value;
150
> 151 if (height > 5) {
152 dev_err(drm->dev, "invalid block height value: %ld\n",
153 height);
154
155 err = -EINVAL;
156 goto cleanup;
157 }
158
159 modifier = DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(height);
160 break;
161
162 default:
163 dev_err(drm->dev, "invalid tiling mode\n");
164 err = -EINVAL;
165 goto cleanup;
166 }
167
168 if (planes[0]->tiling.sector_layout == DRM_TEGRA_GEM_SECTOR_LAYOUT_GPU)
169 modifier |= DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT;
170
171 mode_cmd_local.modifier[0] = modifier;
172
173 mode_cmd = &mode_cmd_local;
174 }
175
176 drm_helper_mode_fill_fb_struct(drm, fb, mode_cmd);
177
178 for (i = 0; i < fb->format->num_planes; i++)
179 fb->obj[i] = &planes[i]->gem;
180
181 err = drm_framebuffer_init(drm, fb, &tegra_fb_funcs);
182 if (err < 0) {
183 dev_err(drm->dev, "failed to initialize framebuffer: %d\n",
184 err);
185 goto cleanup;
186 }
187
188 return fb;
189
190 cleanup:
191 kfree(fb);
192 return ERR_PTR(err);
193 }
194
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index 9291209154a7..31f381262345 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -116,11 +116,63 @@ static struct drm_framebuffer *tegra_fb_alloc(struct drm_device *drm, struct drm_framebuffer *fb; unsigned int i; int err; + struct drm_mode_fb_cmd2 mode_cmd_local; fb = kzalloc(sizeof(*fb), GFP_KERNEL); if (!fb) return ERR_PTR(-ENOMEM); + /* Check for implicitly defined modifiers using + * the state defined by tegra_gem_set_tiling(). + */ + if (!(mode_cmd->flags & DRM_MODE_FB_MODIFIERS)) { + uint64_t modifier; + + mode_cmd_local = *mode_cmd; + + switch (planes[0]->tiling.mode) { + case TEGRA_BO_TILING_MODE_PITCH: + modifier = DRM_FORMAT_MOD_LINEAR; + break; + + case TEGRA_BO_TILING_MODE_TILED: + modifier = DRM_FORMAT_MOD_NVIDIA_TEGRA_TILED; + break; + + /* With all rigour this reconstruction of the modifier is + * incomplete, as it skips some fields (like page kind). + * However, along with the sector layout below it should + * contain all the bits of information needed by the + * scanout hardware. + */ + case TEGRA_BO_TILING_MODE_BLOCK: + unsigned long height = planes[0]->tiling.value; + + if (height > 5) { + dev_err(drm->dev, "invalid block height value: %ld\n", + height); + + err = -EINVAL; + goto cleanup; + } + + modifier = DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(height); + break; + + default: + dev_err(drm->dev, "invalid tiling mode\n"); + err = -EINVAL; + goto cleanup; + } + + if (planes[0]->tiling.sector_layout == DRM_TEGRA_GEM_SECTOR_LAYOUT_GPU) + modifier |= DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT; + + mode_cmd_local.modifier[0] = modifier; + + mode_cmd = &mode_cmd_local; + } + drm_helper_mode_fill_fb_struct(drm, fb, mode_cmd); for (i = 0; i < fb->format->num_planes; i++) @@ -130,11 +182,14 @@ static struct drm_framebuffer *tegra_fb_alloc(struct drm_device *drm, if (err < 0) { dev_err(drm->dev, "failed to initialize framebuffer: %d\n", err); - kfree(fb); - return ERR_PTR(err); + goto cleanup; } return fb; + +cleanup: + kfree(fb); + return ERR_PTR(err); } struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
When importing buffers from the GPU to scan out, it may happen that the buffer object has non-trivial tiling parameters, which currently go by undetected. This leads to the framebuffer being read and displayed in the wrong order. Explicitly check for this case and reconstruct the adequate modifier so that the framebuffer is correctly scanned out. Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt> --- drivers/gpu/drm/tegra/fb.c | 59 ++++++++++++++++++++++++++++++++++++-- 1 file changed, 57 insertions(+), 2 deletions(-)